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Merge pull request #1967 from bradrydzewski/master

Browse source 
Promote new agent <> communication
This commit is contained in:
Brad Rydzewski 2017-03-16 18:25:28 +08:00 committed by GitHub
commit b05b54a2ef
228 changed files with 6304 additions and 23951 deletions
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22
.drone.yml
View file

@ -22,17 +22,17 @@ pipeline:
when:
event: push
# archive:
# image: plugins/s3
# acl: public-read
# bucket: downloads.drone.io
# source: release/**/*.*
# access_key: ${AWS_ACCESS_KEY_ID}
# secret_key: ${AWS_SECRET_ACCESS_KEY}
# when:
# event: push
# branch: master
archive:
image: plugins/s3
acl: public-read
bucket: downloads.drone.io
source: release/**/*.*
target: /0.6.0/
access_key: ${AWS_ACCESS_KEY_ID}
secret_key: ${AWS_SECRET_ACCESS_KEY}
when:
event: push
branch: master
publish:
image: plugins/docker

2
.drone.yml.sig
View file

@ -1 +1 @@
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eyJhbGciOiJIUzI1NiJ9.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.-w5oLW1ORcBymNExC1Q-y5Ju6P0-9D2GKRjaTFKP3vg

329
agent/agent.go
View file

@ -1,329 +0,0 @@
package agent
import (
"fmt"
"net"
"net/url"
"path/filepath"
"regexp"
"strings"
"time"
"github.com/drone/drone/build"
"github.com/drone/drone/model"
"github.com/drone/drone/version"
"github.com/drone/drone/yaml"
"github.com/drone/drone/yaml/transform"
"github.com/drone/envsubst"
)
type Logger interface {
Write(*build.Line)
}
type Agent struct {
Update UpdateFunc
Logger LoggerFunc
Engine build.Engine
Timeout time.Duration
Platform string
Namespace string
Extension []string
Escalate []string
Netrc []string
Local string
Pull bool
}
func (a *Agent) Poll() error {
// logrus.Infof("Starting build %s/%s#%d.%d",
// payload.Repo.Owner, payload.Repo.Name, payload.Build.Number, payload.Job.Number)
//
//
// logrus.Infof("Finished build %s/%s#%d.%d",
// payload.Repo.Owner, payload.Repo.Name, payload.Build.Number, payload.Job.Number)
return nil
}
func (a *Agent) Run(payload *model.Work, cancel <-chan bool) error {
payload.Job.Status = model.StatusRunning
payload.Job.Started = time.Now().Unix()
spec, err := a.prep(payload)
if err != nil {
payload.Job.Error = err.Error()
payload.Job.ExitCode = 255
payload.Job.Finished = payload.Job.Started
payload.Job.Status = model.StatusError
a.Update(payload)
return err
}
a.Update(payload)
err = a.exec(spec, payload, cancel)
if err != nil {
payload.Job.ExitCode = 255
payload.Job.Error = err.Error()
}
if exitErr, ok := err.(*build.ExitError); ok {
payload.Job.ExitCode = exitErr.Code
payload.Job.Error = "" // exit errors are already written to the log
}
payload.Job.Finished = time.Now().Unix()
switch payload.Job.ExitCode {
case 128, 130, 137:
payload.Job.Status = model.StatusKilled
case 0:
payload.Job.Status = model.StatusSuccess
default:
payload.Job.Status = model.StatusFailure
}
a.Update(payload)
return err
}
func (a *Agent) prep(w *model.Work) (*yaml.Config, error) {
envs := toEnv(w)
envSecrets := map[string]string{}
// list of secrets to interpolate in the yaml
for _, secret := range w.Secrets {
if (w.Verified || secret.SkipVerify) && secret.MatchEvent(w.Build.Event) {
envSecrets[secret.Name] = secret.Value
}
}
var err error
w.Yaml, err = envsubst.Eval(w.Yaml, func(s string) string {
env, ok := envSecrets[s]
if !ok {
env, _ = envs[s]
}
if strings.Contains(env, "\n") {
env = fmt.Sprintf("%q", env)
}
return env
})
if err != nil {
return nil, err
}
// append secrets when verified or when a secret does not require
// verification
var secrets []*model.Secret
for _, secret := range w.Secrets {
if w.Verified || secret.SkipVerify {
secrets = append(secrets, secret)
}
}
// inject the netrc file into the clone plugin if the repository is
// private and requires authentication.
if w.Repo.IsPrivate {
secrets = append(secrets, &model.Secret{
Name: "DRONE_NETRC_USERNAME",
Value: w.Netrc.Login,
Images: []string{"*"},
Events: []string{"*"},
})
secrets = append(secrets, &model.Secret{
Name: "DRONE_NETRC_PASSWORD",
Value: w.Netrc.Password,
Images: []string{"*"},
Events: []string{"*"},
})
secrets = append(secrets, &model.Secret{
Name: "DRONE_NETRC_MACHINE",
Value: w.Netrc.Machine,
Images: []string{"*"},
Events: []string{"*"},
})
}
conf, err := yaml.ParseString(w.Yaml)
if err != nil {
return nil, err
}
src := "src"
if url, _ := url.Parse(w.Repo.Link); url != nil {
host, _, err := net.SplitHostPort(url.Host)
if err == nil {
url.Host = host
}
src = filepath.Join(src, url.Host, url.Path)
}
transform.Clone(conf, w.Repo.Kind)
transform.Environ(conf, envs)
transform.DefaultFilter(conf)
if w.BuildLast != nil {
transform.ChangeFilter(conf, w.BuildLast.Status)
}
transform.ImageSecrets(conf, secrets, w.Build.Event)
transform.Identifier(conf)
transform.WorkspaceTransform(conf, "/drone", src)
if err := transform.Check(conf, w.Repo.IsTrusted); err != nil {
return nil, err
}
transform.CommandTransform(conf)
transform.ImagePull(conf, a.Pull)
transform.ImageTag(conf)
if err := transform.ImageEscalate(conf, a.Escalate); err != nil {
return nil, err
}
transform.PluginParams(conf)
if a.Local != "" {
transform.PluginDisable(conf, true)
transform.ImageVolume(conf, []string{a.Local + ":" + conf.Workspace.Path})
}
transform.Pod(conf, a.Platform)
if err := transform.RemoteTransform(conf, a.Extension); err != nil {
return nil, err
}
return conf, nil
}
func (a *Agent) exec(spec *yaml.Config, payload *model.Work, cancel <-chan bool) error {
conf := build.Config{
Engine: a.Engine,
Buffer: 500,
}
pipeline := conf.Pipeline(spec)
defer pipeline.Teardown()
// setup the build environment
if err := pipeline.Setup(); err != nil {
return err
}
replacer := NewSecretReplacer(payload.Secrets)
timeout := time.After(time.Duration(payload.Repo.Timeout) * time.Minute)
for {
select {
case <-pipeline.Done():
return pipeline.Err()
case <-cancel:
pipeline.Stop()
return fmt.Errorf("termination request received, build cancelled")
case <-timeout:
pipeline.Stop()
return fmt.Errorf("maximum time limit exceeded, build cancelled")
case <-time.After(a.Timeout):
pipeline.Stop()
return fmt.Errorf("terminal inactive for %v, build cancelled", a.Timeout)
case <-pipeline.Next():
// TODO(bradrydzewski) this entire block of code should probably get
// encapsulated in the pipeline.
status := model.StatusSuccess
if pipeline.Err() != nil {
status = model.StatusFailure
}
// updates the build status passed into each container. I realize this is
// a bit out of place and will work to resolve.
pipeline.Head().Environment["DRONE_BUILD_STATUS"] = status
if !pipeline.Head().Constraints.Match(
a.Platform,
payload.Build.Deploy,
payload.Build.Event,
payload.Build.Branch,
status, payload.Job.Environment) { // TODO: fix this whole section
pipeline.Skip()
} else {
pipeline.Exec()
}
case line := <-pipeline.Pipe():
line.Out = replacer.Replace(line.Out)
a.Logger(line)
}
}
}
func toEnv(w *model.Work) map[string]string {
envs := map[string]string{
"CI": "drone",
"DRONE": "true",
"DRONE_ARCH": "linux/amd64",
"DRONE_REPO": w.Repo.FullName,
"DRONE_REPO_SCM": w.Repo.Kind,
"DRONE_REPO_OWNER": w.Repo.Owner,
"DRONE_REPO_NAME": w.Repo.Name,
"DRONE_REPO_LINK": w.Repo.Link,
"DRONE_REPO_AVATAR": w.Repo.Avatar,
"DRONE_REPO_BRANCH": w.Repo.Branch,
"DRONE_REPO_PRIVATE": fmt.Sprintf("%v", w.Repo.IsPrivate),
"DRONE_REPO_TRUSTED": fmt.Sprintf("%v", w.Repo.IsTrusted),
"DRONE_REMOTE_URL": w.Repo.Clone,
"DRONE_COMMIT_SHA": w.Build.Commit,
"DRONE_COMMIT_REF": w.Build.Ref,
"DRONE_COMMIT_REFSPEC": w.Build.Refspec,
"DRONE_COMMIT_BRANCH": w.Build.Branch,
"DRONE_COMMIT_LINK": w.Build.Link,
"DRONE_COMMIT_MESSAGE": w.Build.Message,
"DRONE_COMMIT_AUTHOR": w.Build.Author,
"DRONE_COMMIT_AUTHOR_EMAIL": w.Build.Email,
"DRONE_COMMIT_AUTHOR_AVATAR": w.Build.Avatar,
"DRONE_BUILD_NUMBER": fmt.Sprintf("%d", w.Build.Number),
"DRONE_BUILD_EVENT": w.Build.Event,
"DRONE_BUILD_STATUS": w.Build.Status,
"DRONE_BUILD_LINK": fmt.Sprintf("%s/%s/%d", w.System.Link, w.Repo.FullName, w.Build.Number),
"DRONE_BUILD_CREATED": fmt.Sprintf("%d", w.Build.Created),
"DRONE_BUILD_STARTED": fmt.Sprintf("%d", w.Build.Started),
"DRONE_BUILD_FINISHED": fmt.Sprintf("%d", w.Build.Finished),
"DRONE_JOB_NUMBER": fmt.Sprintf("%d", w.Job.Number),
"DRONE_JOB_STATUS": w.Job.Status,
"DRONE_JOB_ERROR": w.Job.Error,
"DRONE_JOB_EXIT_CODE": fmt.Sprintf("%d", w.Job.ExitCode),
"DRONE_JOB_STARTED": fmt.Sprintf("%d", w.Job.Started),
"DRONE_JOB_FINISHED": fmt.Sprintf("%d", w.Job.Finished),
"DRONE_YAML_VERIFIED": fmt.Sprintf("%v", w.Verified),
"DRONE_YAML_SIGNED": fmt.Sprintf("%v", w.Signed),
"DRONE_BRANCH": w.Build.Branch,
"DRONE_COMMIT": w.Build.Commit,
"DRONE_VERSION": version.Version,
}
if w.Build.Event == model.EventTag {
envs["DRONE_TAG"] = strings.TrimPrefix(w.Build.Ref, "refs/tags/")
}
if w.Build.Event == model.EventPull {
envs["DRONE_PULL_REQUEST"] = pullRegexp.FindString(w.Build.Ref)
}
if w.Build.Event == model.EventDeploy {
envs["DRONE_DEPLOY_TO"] = w.Build.Deploy
}
if w.BuildLast != nil {
envs["DRONE_PREV_BUILD_STATUS"] = w.BuildLast.Status
envs["DRONE_PREV_BUILD_NUMBER"] = fmt.Sprintf("%v", w.BuildLast.Number)
envs["DRONE_PREV_COMMIT_SHA"] = w.BuildLast.Commit
}
// inject matrix values as environment variables
for key, val := range w.Job.Environment {
envs[key] = val
}
return envs
}
var pullRegexp = regexp.MustCompile("\\d+")

46
agent/secret.go
View file

@ -1,46 +0,0 @@
package agent
import (
"strings"
"github.com/drone/drone/model"
)
// SecretReplacer hides secrets from being exposed by the build output.
type SecretReplacer interface {
// Replace conceals instances of secrets found in s.
Replace(s string) string
}
// NewSecretReplacer creates a SecretReplacer based on whether any value in
// secrets requests it be hidden.
func NewSecretReplacer(secrets []*model.Secret) SecretReplacer {
var r []string
for _, s := range secrets {
if s.Conceal {
r = append(r, s.Value, "*****")
}
}
if len(r) == 0 {
return &noopReplacer{}
}
return &secretReplacer{
replacer: strings.NewReplacer(r...),
}
}
type noopReplacer struct{}
func (*noopReplacer) Replace(s string) string {
return s
}
type secretReplacer struct {
replacer *strings.Replacer
}
func (r *secretReplacer) Replace(s string) string {
return r.replacer.Replace(s)
}

39
agent/secret_test.go
View file

@ -1,39 +0,0 @@
package agent
import (
"testing"
"github.com/drone/drone/model"
"github.com/franela/goblin"
)
const testString = "This is SECRET: secret_value"
func TestSecret(t *testing.T) {
g := goblin.Goblin(t)
g.Describe("SecretReplacer", func() {
g.It("Should conceal secret", func() {
secrets := []*model.Secret{
{
Name: "SECRET",
Value: "secret_value",
Conceal: true,
},
}
r := NewSecretReplacer(secrets)
g.Assert(r.Replace(testString)).Equal("This is SECRET: *****")
})
g.It("Should not conceal secret", func() {
secrets := []*model.Secret{
{
Name: "SECRET",
Value: "secret_value",
Conceal: false,
},
}
r := NewSecretReplacer(secrets)
g.Assert(r.Replace(testString)).Equal(testString)
})
})
}

67
agent/updater.go
View file

@ -1,67 +0,0 @@
package agent
import (
"fmt"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/build"
"github.com/drone/drone/model"
"github.com/drone/mq/logger"
"github.com/drone/mq/stomp"
)
// UpdateFunc handles buid pipeline status updates.
type UpdateFunc func(*model.Work)
// LoggerFunc handles buid pipeline logging updates.
type LoggerFunc func(*build.Line)
var NoopUpdateFunc = func(*model.Work) {}
var TermLoggerFunc = func(line *build.Line) {
fmt.Println(line)
}
// NewClientUpdater returns an updater that sends updated build details
// to the drone server.
func NewClientUpdater(client *stomp.Client) UpdateFunc {
return func(w *model.Work) {
err := client.SendJSON("/queue/updates", w)
if err != nil {
logger.Warningf("Error updating %s/%s#%d.%d. %s",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number, err)
}
if w.Job.Status != model.StatusRunning {
var dest = fmt.Sprintf("/topic/logs.%d", w.Job.ID)
var opts = []stomp.MessageOption{
stomp.WithHeader("eof", "true"),
stomp.WithRetain("all"),
}
if err := client.Send(dest, []byte("eof"), opts...); err != nil {
logger.Warningf("Error sending eof %s/%s#%d.%d. %s",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number, err)
}
}
}
}
func NewClientLogger(client *stomp.Client, id int64, limit int64) LoggerFunc {
var size int64
var dest = fmt.Sprintf("/topic/logs.%d", id)
var opts = []stomp.MessageOption{
stomp.WithRetain("all"),
}
return func(line *build.Line) {
if size > limit {
return
}
if err := client.SendJSON(dest, line, opts...); err != nil {
logrus.Errorf("Error streaming build logs. %s", err)
}
size += int64(len(line.Out))
}
}

48
build/config.go
View file

@ -1,48 +0,0 @@
package build
import "github.com/drone/drone/yaml"
// Config defines the configuration for creating the Pipeline.
type Config struct {
Engine Engine
// Buffer defines the size of the buffer for the channel to which the
// console output is streamed.
Buffer uint
}
// Pipeline creates a build Pipeline using the specific configuration for
// the given Yaml specification.
func (c *Config) Pipeline(spec *yaml.Config) *Pipeline {
pipeline := Pipeline{
engine: c.Engine,
pipe: make(chan *Line, c.Buffer),
next: make(chan error),
done: make(chan error),
}
var containers []*yaml.Container
containers = append(containers, spec.Services...)
containers = append(containers, spec.Pipeline...)
for _, c := range containers {
if c.Disabled {
continue
}
next := &element{Container: c}
if pipeline.head == nil {
pipeline.head = next
pipeline.tail = next
} else {
pipeline.tail.next = next
pipeline.tail = next
}
}
go func() {
pipeline.next <- nil
}()
return &pipeline
}

112
build/docker/docker.go
View file

@ -1,112 +0,0 @@
package docker
import (
"io"
"github.com/drone/drone/build"
"github.com/drone/drone/build/docker/internal"
"github.com/drone/drone/yaml"
"github.com/samalba/dockerclient"
)
type dockerEngine struct {
client dockerclient.Client
}
func (e *dockerEngine) ContainerStart(container *yaml.Container) (string, error) {
conf := toContainerConfig(container)
auth := toAuthConfig(container)
// pull the image if it does not exists or if the Container
// is configured to always pull a new image.
_, err := e.client.InspectImage(container.Image)
if err != nil || container.Pull {
e.client.PullImage(container.Image, auth)
}
// create and start the container and return the Container ID.
id, err := e.client.CreateContainer(conf, container.ID, auth)
if err != nil {
return id, err
}
err = e.client.StartContainer(id, &conf.HostConfig)
if err != nil {
// remove the container if it cannot be started
e.client.RemoveContainer(id, true, true)
return id, err
}
return id, nil
}
func (e *dockerEngine) ContainerStop(id string) error {
e.client.StopContainer(id, 1)
e.client.KillContainer(id, "9")
return nil
}
func (e *dockerEngine) ContainerRemove(id string) error {
e.client.StopContainer(id, 1)
e.client.KillContainer(id, "9")
e.client.RemoveContainer(id, true, true)
return nil
}
func (e *dockerEngine) ContainerWait(id string) (*build.State, error) {
// wait for the container to exit
//
// TODO(bradrydzewski) we should have a for loop here
// to re-connect and wait if this channel returns a
// result even though the container is still running.
//
<-e.client.Wait(id)
v, err := e.client.InspectContainer(id)
if err != nil {
return nil, err
}
return &build.State{
ExitCode: v.State.ExitCode,
OOMKilled: v.State.OOMKilled,
}, nil
}
func (e *dockerEngine) ContainerLogs(id string) (io.ReadCloser, error) {
opts := &dockerclient.LogOptions{
Follow: true,
Stdout: true,
Stderr: true,
}
piper, pipew := io.Pipe()
go func() {
defer pipew.Close()
// sometimes the docker logs fails due to parsing errors. this
// routine will check for such a failure and attempt to resume
// if necessary.
for i := 0; i < 5; i++ {
if i > 0 {
opts.Tail = 1
}
rc, err := e.client.ContainerLogs(id, opts)
if err != nil {
return
}
defer rc.Close()
// use Docker StdCopy
internal.StdCopy(pipew, pipew, rc)
// check to see if the container is still running. If not,
// we can safely exit and assume there are no more logs left
// to stream.
v, err := e.client.InspectContainer(id)
if err != nil || !v.State.Running {
return
}
}
}()
return piper, nil
}

1
build/docker/docker_test.go
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@ -1 +0,0 @@
package docker

25
build/docker/helper.go
View file

@ -1,25 +0,0 @@
package docker
import (
"github.com/drone/drone/build"
"github.com/samalba/dockerclient"
)
// NewClient returns a new Docker engine using the provided Docker client.
func NewClient(client dockerclient.Client) build.Engine {
return &dockerEngine{client}
}
// New returns a new Docker engine from the provided DOCKER_HOST and
// DOCKER_CERT_PATH environment variables.
func New(host, cert string, tls bool) (build.Engine, error) {
config, err := dockerclient.TLSConfigFromCertPath(cert)
if err == nil && tls {
config.InsecureSkipVerify = true
}
client, err := dockerclient.NewDockerClient(host, config)
if err != nil {
return nil, err
}
return NewClient(client), nil
}

1
build/docker/helper_test.go
View file

@ -1 +0,0 @@
package docker

1
build/docker/internal/README
View file

@ -1 +0,0 @@
This is an internal copy of the Docker stdcopy package that removes the logrus debug logging. The original package is found at https://github.com/docker/docker/tree/master/pkg/stdcopy

167
build/docker/internal/stdcopy.go
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@ -1,167 +0,0 @@
package internal
import (
"encoding/binary"
"errors"
"fmt"
"io"
)
// StdType is the type of standard stream
// a writer can multiplex to.
type StdType byte
const (
// Stdin represents standard input stream type.
Stdin StdType = iota
// Stdout represents standard output stream type.
Stdout
// Stderr represents standard error steam type.
Stderr
stdWriterPrefixLen = 8
stdWriterFdIndex = 0
stdWriterSizeIndex = 4
startingBufLen = 32*1024 + stdWriterPrefixLen + 1
)
// stdWriter is wrapper of io.Writer with extra customized info.
type stdWriter struct {
io.Writer
prefix byte
}
// Write sends the buffer to the underneath writer.
// It insert the prefix header before the buffer,
// so stdcopy.StdCopy knows where to multiplex the output.
// It makes stdWriter to implement io.Writer.
func (w *stdWriter) Write(buf []byte) (n int, err error) {
if w == nil || w.Writer == nil {
return 0, errors.New("Writer not instantiated")
}
if buf == nil {
return 0, nil
}
header := [stdWriterPrefixLen]byte{stdWriterFdIndex: w.prefix}
binary.BigEndian.PutUint32(header[stdWriterSizeIndex:], uint32(len(buf)))
line := append(header[:], buf...)
n, err = w.Writer.Write(line)
n -= stdWriterPrefixLen
if n < 0 {
n = 0
}
return
}
// NewStdWriter instantiates a new Writer.
// Everything written to it will be encapsulated using a custom format,
// and written to the underlying `w` stream.
// This allows multiple write streams (e.g. stdout and stderr) to be muxed into a single connection.
// `t` indicates the id of the stream to encapsulate.
// It can be stdcopy.Stdin, stdcopy.Stdout, stdcopy.Stderr.
func NewStdWriter(w io.Writer, t StdType) io.Writer {
return &stdWriter{
Writer: w,
prefix: byte(t),
}
}
// StdCopy is a modified version of io.Copy.
//
// StdCopy will demultiplex `src`, assuming that it contains two streams,
// previously multiplexed together using a StdWriter instance.
// As it reads from `src`, StdCopy will write to `dstout` and `dsterr`.
//
// StdCopy will read until it hits EOF on `src`. It will then return a nil error.
// In other words: if `err` is non nil, it indicates a real underlying error.
//
// `written` will hold the total number of bytes written to `dstout` and `dsterr`.
func StdCopy(dstout, dsterr io.Writer, src io.Reader) (written int64, err error) {
var (
buf = make([]byte, startingBufLen)
bufLen = len(buf)
nr, nw int
er, ew error
out io.Writer
frameSize int
)
for {
// Make sure we have at least a full header
for nr < stdWriterPrefixLen {
var nr2 int
nr2, er = src.Read(buf[nr:])
nr += nr2
if er == io.EOF {
if nr < stdWriterPrefixLen {
return written, nil
}
break
}
if er != nil {
return 0, er
}
}
// Check the first byte to know where to write
switch StdType(buf[stdWriterFdIndex]) {
case Stdin:
fallthrough
case Stdout:
// Write on stdout
out = dstout
case Stderr:
// Write on stderr
out = dsterr
default:
return 0, fmt.Errorf("Unrecognized input header: %d", buf[stdWriterFdIndex])
}
// Retrieve the size of the frame
frameSize = int(binary.BigEndian.Uint32(buf[stdWriterSizeIndex : stdWriterSizeIndex+4]))
// Check if the buffer is big enough to read the frame.
// Extend it if necessary.
if frameSize+stdWriterPrefixLen > bufLen {
buf = append(buf, make([]byte, frameSize+stdWriterPrefixLen-bufLen+1)...)
bufLen = len(buf)
}
// While the amount of bytes read is less than the size of the frame + header, we keep reading
for nr < frameSize+stdWriterPrefixLen {
var nr2 int
nr2, er = src.Read(buf[nr:])
nr += nr2
if er == io.EOF {
if nr < frameSize+stdWriterPrefixLen {
return written, nil
}
break
}
if er != nil {
return 0, er
}
}
// Write the retrieved frame (without header)
nw, ew = out.Write(buf[stdWriterPrefixLen : frameSize+stdWriterPrefixLen])
if ew != nil {
return 0, ew
}
// If the frame has not been fully written: error
if nw != frameSize {
return 0, io.ErrShortWrite
}
written += int64(nw)
// Move the rest of the buffer to the beginning
copy(buf, buf[frameSize+stdWriterPrefixLen:])
// Move the index
nr -= frameSize + stdWriterPrefixLen
}
}

260
build/docker/internal/stdcopy_test.go
View file

@ -1,260 +0,0 @@
package internal
import (
"bytes"
"errors"
"io"
"io/ioutil"
"strings"
"testing"
)
func TestNewStdWriter(t *testing.T) {
writer := NewStdWriter(ioutil.Discard, Stdout)
if writer == nil {
t.Fatalf("NewStdWriter with an invalid StdType should not return nil.")
}
}
func TestWriteWithUnitializedStdWriter(t *testing.T) {
writer := stdWriter{
Writer: nil,
prefix: byte(Stdout),
}
n, err := writer.Write([]byte("Something here"))
if n != 0 || err == nil {
t.Fatalf("Should fail when given an uncomplete or uninitialized StdWriter")
}
}
func TestWriteWithNilBytes(t *testing.T) {
writer := NewStdWriter(ioutil.Discard, Stdout)
n, err := writer.Write(nil)
if err != nil {
t.Fatalf("Shouldn't have fail when given no data")
}
if n > 0 {
t.Fatalf("Write should have written 0 byte, but has written %d", n)
}
}
func TestWrite(t *testing.T) {
writer := NewStdWriter(ioutil.Discard, Stdout)
data := []byte("Test StdWrite.Write")
n, err := writer.Write(data)
if err != nil {
t.Fatalf("Error while writing with StdWrite")
}
if n != len(data) {
t.Fatalf("Write should have written %d byte but wrote %d.", len(data), n)
}
}
type errWriter struct {
n int
err error
}
func (f *errWriter) Write(buf []byte) (int, error) {
return f.n, f.err
}
func TestWriteWithWriterError(t *testing.T) {
expectedError := errors.New("expected")
expectedReturnedBytes := 10
writer := NewStdWriter(&errWriter{
n: stdWriterPrefixLen + expectedReturnedBytes,
err: expectedError}, Stdout)
data := []byte("This won't get written, sigh")
n, err := writer.Write(data)
if err != expectedError {
t.Fatalf("Didn't get expected error.")
}
if n != expectedReturnedBytes {
t.Fatalf("Didn't get expected written bytes %d, got %d.",
expectedReturnedBytes, n)
}
}
func TestWriteDoesNotReturnNegativeWrittenBytes(t *testing.T) {
writer := NewStdWriter(&errWriter{n: -1}, Stdout)
data := []byte("This won't get written, sigh")
actual, _ := writer.Write(data)
if actual != 0 {
t.Fatalf("Expected returned written bytes equal to 0, got %d", actual)
}
}
func getSrcBuffer(stdOutBytes, stdErrBytes []byte) (buffer *bytes.Buffer, err error) {
buffer = new(bytes.Buffer)
dstOut := NewStdWriter(buffer, Stdout)
_, err = dstOut.Write(stdOutBytes)
if err != nil {
return
}
dstErr := NewStdWriter(buffer, Stderr)
_, err = dstErr.Write(stdErrBytes)
return
}
func TestStdCopyWriteAndRead(t *testing.T) {
stdOutBytes := []byte(strings.Repeat("o", startingBufLen))
stdErrBytes := []byte(strings.Repeat("e", startingBufLen))
buffer, err := getSrcBuffer(stdOutBytes, stdErrBytes)
if err != nil {
t.Fatal(err)
}
written, err := StdCopy(ioutil.Discard, ioutil.Discard, buffer)
if err != nil {
t.Fatal(err)
}
expectedTotalWritten := len(stdOutBytes) + len(stdErrBytes)
if written != int64(expectedTotalWritten) {
t.Fatalf("Expected to have total of %d bytes written, got %d", expectedTotalWritten, written)
}
}
type customReader struct {
n int
err error
totalCalls int
correctCalls int
src *bytes.Buffer
}
func (f *customReader) Read(buf []byte) (int, error) {
f.totalCalls++
if f.totalCalls <= f.correctCalls {
return f.src.Read(buf)
}
return f.n, f.err
}
func TestStdCopyReturnsErrorReadingHeader(t *testing.T) {
expectedError := errors.New("error")
reader := &customReader{
err: expectedError}
written, err := StdCopy(ioutil.Discard, ioutil.Discard, reader)
if written != 0 {
t.Fatalf("Expected 0 bytes read, got %d", written)
}
if err != expectedError {
t.Fatalf("Didn't get expected error")
}
}
func TestStdCopyReturnsErrorReadingFrame(t *testing.T) {
expectedError := errors.New("error")
stdOutBytes := []byte(strings.Repeat("o", startingBufLen))
stdErrBytes := []byte(strings.Repeat("e", startingBufLen))
buffer, err := getSrcBuffer(stdOutBytes, stdErrBytes)
if err != nil {
t.Fatal(err)
}
reader := &customReader{
correctCalls: 1,
n: stdWriterPrefixLen + 1,
err: expectedError,
src: buffer}
written, err := StdCopy(ioutil.Discard, ioutil.Discard, reader)
if written != 0 {
t.Fatalf("Expected 0 bytes read, got %d", written)
}
if err != expectedError {
t.Fatalf("Didn't get expected error")
}
}
func TestStdCopyDetectsCorruptedFrame(t *testing.T) {
stdOutBytes := []byte(strings.Repeat("o", startingBufLen))
stdErrBytes := []byte(strings.Repeat("e", startingBufLen))
buffer, err := getSrcBuffer(stdOutBytes, stdErrBytes)
if err != nil {
t.Fatal(err)
}
reader := &customReader{
correctCalls: 1,
n: stdWriterPrefixLen + 1,
err: io.EOF,
src: buffer}
written, err := StdCopy(ioutil.Discard, ioutil.Discard, reader)
if written != startingBufLen {
t.Fatalf("Expected %d bytes read, got %d", startingBufLen, written)
}
if err != nil {
t.Fatal("Didn't get nil error")
}
}
func TestStdCopyWithInvalidInputHeader(t *testing.T) {
dstOut := NewStdWriter(ioutil.Discard, Stdout)
dstErr := NewStdWriter(ioutil.Discard, Stderr)
src := strings.NewReader("Invalid input")
_, err := StdCopy(dstOut, dstErr, src)
if err == nil {
t.Fatal("StdCopy with invalid input header should fail.")
}
}
func TestStdCopyWithCorruptedPrefix(t *testing.T) {
data := []byte{0x01, 0x02, 0x03}
src := bytes.NewReader(data)
written, err := StdCopy(nil, nil, src)
if err != nil {
t.Fatalf("StdCopy should not return an error with corrupted prefix.")
}
if written != 0 {
t.Fatalf("StdCopy should have written 0, but has written %d", written)
}
}
func TestStdCopyReturnsWriteErrors(t *testing.T) {
stdOutBytes := []byte(strings.Repeat("o", startingBufLen))
stdErrBytes := []byte(strings.Repeat("e", startingBufLen))
buffer, err := getSrcBuffer(stdOutBytes, stdErrBytes)
if err != nil {
t.Fatal(err)
}
expectedError := errors.New("expected")
dstOut := &errWriter{err: expectedError}
written, err := StdCopy(dstOut, ioutil.Discard, buffer)
if written != 0 {
t.Fatalf("StdCopy should have written 0, but has written %d", written)
}
if err != expectedError {
t.Fatalf("Didn't get expected error, got %v", err)
}
}
func TestStdCopyDetectsNotFullyWrittenFrames(t *testing.T) {
stdOutBytes := []byte(strings.Repeat("o", startingBufLen))
stdErrBytes := []byte(strings.Repeat("e", startingBufLen))
buffer, err := getSrcBuffer(stdOutBytes, stdErrBytes)
if err != nil {
t.Fatal(err)
}
dstOut := &errWriter{n: startingBufLen - 10}
written, err := StdCopy(dstOut, ioutil.Discard, buffer)
if written != 0 {
t.Fatalf("StdCopy should have return 0 written bytes, but returned %d", written)
}
if err != io.ErrShortWrite {
t.Fatalf("Didn't get expected io.ErrShortWrite error")
}
}
func BenchmarkWrite(b *testing.B) {
w := NewStdWriter(ioutil.Discard, Stdout)
data := []byte("Test line for testing stdwriter performance\n")
data = bytes.Repeat(data, 100)
b.SetBytes(int64(len(data)))
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := w.Write(data); err != nil {
b.Fatal(err)
}
}
}

102
build/docker/util.go
View file

@ -1,102 +0,0 @@
package docker
import (
"fmt"
"strings"
"github.com/drone/drone/yaml"
"github.com/samalba/dockerclient"
)
// helper function that converts the Continer data structure to the exepcted
// dockerclient.ContainerConfig.
func toContainerConfig(c *yaml.Container) *dockerclient.ContainerConfig {
config := &dockerclient.ContainerConfig{
Image: c.Image,
Env: toEnvironmentSlice(c.Environment),
Labels: c.Labels,
Cmd: c.Command,
Entrypoint: c.Entrypoint,
WorkingDir: c.WorkingDir,
HostConfig: dockerclient.HostConfig{
Privileged: c.Privileged,
NetworkMode: c.Network,
Memory: c.MemLimit,
ShmSize: c.ShmSize,
CpuShares: c.CPUShares,
CpuQuota: c.CPUQuota,
CpusetCpus: c.CPUSet,
MemorySwappiness: -1,
OomKillDisable: c.OomKillDisable,
},
}
if len(config.Entrypoint) == 0 {
config.Entrypoint = nil
}
if len(config.Cmd) == 0 {
config.Cmd = nil
}
if len(c.ExtraHosts) > 0 {
config.HostConfig.ExtraHosts = c.ExtraHosts
}
if len(c.DNS) != 0 {
config.HostConfig.Dns = c.DNS
}
if len(c.DNSSearch) != 0 {
config.HostConfig.DnsSearch = c.DNSSearch
}
if len(c.VolumesFrom) != 0 {
config.HostConfig.VolumesFrom = c.VolumesFrom
}
config.Volumes = map[string]struct{}{}
for _, path := range c.Volumes {
if strings.Index(path, ":") == -1 {
config.Volumes[path] = struct{}{}
continue
}
parts := strings.Split(path, ":")
config.Volumes[parts[1]] = struct{}{}
config.HostConfig.Binds = append(config.HostConfig.Binds, path)
}
for _, path := range c.Devices {
if strings.Index(path, ":") == -1 {
continue
}
parts := strings.Split(path, ":")
device := dockerclient.DeviceMapping{
PathOnHost: parts[0],
PathInContainer: parts[1],
CgroupPermissions: "rwm",
}
config.HostConfig.Devices = append(config.HostConfig.Devices, device)
}
return config
}
// helper function that converts the AuthConfig data structure to the exepcted
// dockerclient.AuthConfig.
func toAuthConfig(container *yaml.Container) *dockerclient.AuthConfig {
if container.AuthConfig.Username == "" &&
container.AuthConfig.Password == "" {
return nil
}
return &dockerclient.AuthConfig{
Email: container.AuthConfig.Email,
Username: container.AuthConfig.Username,
Password: container.AuthConfig.Password,
}
}
// helper function that converts a key value map of environment variables to a
// string slice in key=value format.
func toEnvironmentSlice(env map[string]string) []string {
var envs []string
for k, v := range env {
envs = append(envs, fmt.Sprintf("%s=%s", k, v))
}
return envs
}

24
build/docker/util_test.go
View file

@ -1,24 +0,0 @@
package docker
import (
"testing"
)
func Test_toContainerConfig(t *testing.T) {
t.Skip()
}
func Test_toAuthConfig(t *testing.T) {
t.Skip()
}
func Test_toEnvironmentSlice(t *testing.T) {
env := map[string]string{
"HOME": "/root",
}
envs := toEnvironmentSlice(env)
want, got := "HOME=/root", envs[0]
if want != got {
t.Errorf("Wanted envar %s got %s", want, got)
}
}

16
build/engine.go
View file

@ -1,16 +0,0 @@
package build
import (
"io"
"github.com/drone/drone/yaml"
)
// Engine defines the container runtime engine.
type Engine interface {
ContainerStart(*yaml.Container) (string, error)
ContainerStop(string) error
ContainerRemove(string) error
ContainerWait(string) (*State, error)
ContainerLogs(string) (io.ReadCloser, error)
}

37
build/error.go
View file

@ -1,37 +0,0 @@
package build
import (
"errors"
"fmt"
)
var (
// ErrSkip is used as a return value when container execution should be
// skipped at runtime. It is not returned as an error by any function.
ErrSkip = errors.New("Skip")
// ErrTerm is used as a return value when the runner should terminate
// execution and exit. It is not returned as an error by any function.
ErrTerm = errors.New("Terminate")
)
// An ExitError reports an unsuccessful exit.
type ExitError struct {
Name string
Code int
}
// Error returns the error message in string format.
func (e *ExitError) Error() string {
return fmt.Sprintf("%s : exit code %d", e.Name, e.Code)
}
// An OomError reports the process received an OOMKill from the kernel.
type OomError struct {
Name string
}
// Error returns the error message in string format.
func (e *OomError) Error() string {
return fmt.Sprintf("%s : received oom kill", e.Name)
}

26
build/error_test.go
View file

@ -1,26 +0,0 @@
package build
import (
"testing"
"github.com/franela/goblin"
)
func TestErrors(t *testing.T) {
g := goblin.Goblin(t)
g.Describe("Error messages", func() {
g.It("should include OOM details", func() {
err := OomError{Name: "golang"}
got, want := err.Error(), "golang : received oom kill"
g.Assert(got).Equal(want)
})
g.It("should include Exit code", func() {
err := ExitError{Name: "golang", Code: 255}
got, want := err.Error(), "golang : exit code 255"
g.Assert(got).Equal(want)
})
})
}

241
build/pipeline.go
View file

@ -1,241 +0,0 @@
package build
import (
"bufio"
"strconv"
"sync"
"time"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/yaml"
)
// element represents a link in the linked list.
type element struct {
*yaml.Container
next *element
}
// Pipeline represents a build pipeline.
type Pipeline struct {
conf *yaml.Config
head *element
tail *element
wait sync.WaitGroup
pipe chan (*Line)
next chan (error)
done chan (error)
err error
containers []string
volumes []string
networks []string
engine Engine
}
// Done returns when the process is done executing.
func (p *Pipeline) Done() <-chan error {
return p.done
}
// Err returns the error for the current process.
func (p *Pipeline) Err() error {
return p.err
}
// Next returns the next step in the process.
func (p *Pipeline) Next() <-chan error {
return p.next
}
// Exec executes the current step.
func (p *Pipeline) Exec() {
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover executing build step", r)
}
}()
err := p.exec(p.head.Container)
if err != nil {
p.err = err
}
p.step()
}()
}
// Skip skips the current step.
func (p *Pipeline) Skip() {
p.step()
}
// Pipe returns the build output pipe.
func (p *Pipeline) Pipe() <-chan *Line {
return p.pipe
}
// Head returns the head item in the list.
func (p *Pipeline) Head() *yaml.Container {
return p.head.Container
}
// Tail returns the tail item in the list.
func (p *Pipeline) Tail() *yaml.Container {
return p.tail.Container
}
// Stop stops the pipeline.
func (p *Pipeline) Stop() {
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover stopping the pipeline", r)
}
}()
p.done <- ErrTerm
}()
}
// Setup prepares the build pipeline environment.
func (p *Pipeline) Setup() error {
return nil
}
// Teardown removes the pipeline environment.
func (p *Pipeline) Teardown() {
for _, id := range p.containers {
p.engine.ContainerRemove(id)
}
close(p.next)
close(p.done)
// TODO we have a race condition here where the program can try to async
// write to a closed pipe channel. This package, in general, needs to be
// tested for race conditions.
// close(p.pipe)
}
// step steps through the pipeline to head.next
func (p *Pipeline) step() {
if p.head == p.tail {
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover executing step function", r)
}
}()
// stop all containers
for _, id := range p.containers {
p.engine.ContainerStop(id)
}
// wait for all logs to terminate
// p.wait.Done() // this is for the ambassador
p.wait.Wait()
// signal completion
p.done <- nil
}()
} else {
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover executing step to head function", r)
}
}()
p.head = p.head.next
p.next <- nil
}()
}
}
// close closes open channels and signals the pipeline is done.
func (p *Pipeline) close(err error) {
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover closing the pipeline", r)
}
}()
p.done <- err
}()
}
func (p *Pipeline) exec(c *yaml.Container) error {
name, err := p.engine.ContainerStart(c)
if err != nil {
return err
}
p.containers = append(p.containers, name)
p.wait.Add(1)
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover writing build output", r)
}
p.wait.Done()
}()
rc, rerr := p.engine.ContainerLogs(name)
if rerr != nil {
return
}
defer rc.Close()
num := 0
now := time.Now().UTC()
scanner := bufio.NewScanner(rc)
for scanner.Scan() {
p.pipe <- &Line{
Proc: c.Name,
Time: int64(time.Since(now).Seconds()),
Pos: num,
Out: scanner.Text(),
}
num++
}
}()
// exit when running container in detached mode in background
if c.Detached {
return nil
}
state, err := p.engine.ContainerWait(name)
if err != nil {
return err
}
p.wait.Add(1)
go func() {
defer func() {
if r := recover(); r != nil {
logrus.Errorln("recover writing exit code to output", r)
}
p.wait.Done()
}()
p.pipe <- &Line{
Proc: c.Name,
Type: ExitCodeLine,
Out: strconv.Itoa(state.ExitCode),
}
}()
if state.OOMKilled {
return &OomError{c.Name}
} else if state.ExitCode != 0 {
return &ExitError{c.Name, state.ExitCode}
}
return nil
}

42
build/pipeline_test.go
View file

@ -1,42 +0,0 @@
package build
var sampleYaml = `
image: hello-world
build:
context: .
dockerfile: Dockerfile
workspace:
path: src/github.com/octocat/hello-world
base: /go
pipeline:
test:
image: golang
commands:
- go install
- go test
build:
image: golang
commands:
- go build
when:
event: push
notify:
image: slack
channel: dev
when:
event: failure
services:
database:
image: mysql
networks:
custom:
driver: overlay
volumes:
custom:
driver: blockbridge
`

35
build/types.go
View file

@ -1,35 +0,0 @@
package build
import "fmt"
const (
StdoutLine int = iota
StderrLine
ExitCodeLine
MetadataLine
ProgressLine
)
// Line is a line of console output.
type Line struct {
Proc string `json:"proc,omitempty"`
Time int64 `json:"time,omitempty"`
Type int `json:"type,omitempty"`
Pos int `json:"pos,omityempty"`
Out string `json:"out,omitempty"`
}
func (l *Line) String() string {
switch l.Type {
case ExitCodeLine:
return fmt.Sprintf("[%s] exit code %s", l.Proc, l.Out)
default:
return fmt.Sprintf("[%s:L%v:%vs] %s", l.Proc, l.Pos, l.Time, l.Out)
}
}
// State defines the state of the container.
type State struct {
ExitCode int // container exit code
OOMKilled bool // container exited due to oom error
}

23
build/types_test.go
View file

@ -1,23 +0,0 @@
package build
import (
"testing"
"github.com/franela/goblin"
)
func TestLine(t *testing.T) {
g := goblin.Goblin(t)
g.Describe("Line output", func() {
g.It("should prefix string() with metadata", func() {
line := Line{
Proc: "redis",
Time: 60,
Pos: 1,
Out: "starting redis server",
}
g.Assert(line.String()).Equal("[redis:L1:60s] starting redis server")
})
})
}

435
drone/agent/agent.go
View file

@ -1,77 +1,37 @@
package agent
import (
"fmt"
"context"
"io"
"log"
"math"
"os"
"os/signal"
"strings"
"net/url"
"sync"
"syscall"
"time"
"github.com/drone/drone/model"
"github.com/drone/mq/logger"
"github.com/drone/mq/stomp"
"github.com/tidwall/redlog"
"github.com/cncd/pipeline/pipeline"
"github.com/cncd/pipeline/pipeline/backend"
"github.com/cncd/pipeline/pipeline/backend/docker"
"github.com/cncd/pipeline/pipeline/interrupt"
"github.com/cncd/pipeline/pipeline/multipart"
"github.com/cncd/pipeline/pipeline/rpc"
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/samalba/dockerclient"
"github.com/tevino/abool"
"github.com/urfave/cli"
)
// AgentCmd is the exported command for starting the drone agent.
var AgentCmd = cli.Command{
Name: "agent",
Usage: "starts the drone agent",
Action: start,
Action: loop,
Flags: []cli.Flag{
cli.StringFlag{
EnvVar: "DOCKER_HOST",
Name: "docker-host",
Usage: "docker daemon address",
Value: "unix:///var/run/docker.sock",
},
cli.BoolFlag{
EnvVar: "DOCKER_TLS_VERIFY",
Name: "docker-tls-verify",
Usage: "docker daemon supports tlsverify",
},
cli.StringFlag{
EnvVar: "DOCKER_CERT_PATH",
Name: "docker-cert-path",
Usage: "docker certificate directory",
Value: "",
},
cli.IntFlag{
EnvVar: "DOCKER_MAX_PROCS",
Name: "docker-max-procs",
Usage: "limit number of running docker processes",
Value: 2,
},
cli.StringFlag{
EnvVar: "DOCKER_OS",
Name: "docker-os",
Usage: "docker operating system",
Value: "linux",
},
cli.StringFlag{
EnvVar: "DOCKER_ARCH",
Name: "docker-arch",
Usage: "docker architecture system",
Value: "amd64",
},
cli.StringFlag{
EnvVar: "DRONE_SERVER,DRONE_ENDPOINT",
Name: "drone-server",
Usage: "drone server address",
Value: "ws://localhost:8000/ws/broker",
},
cli.StringFlag{
EnvVar: "DRONE_TOKEN",
Name: "drone-token",
Usage: "drone authorization token",
},
cli.StringFlag{
EnvVar: "DRONE_SECRET,DRONE_AGENT_SECRET",
Name: "drone-secret",
@ -83,89 +43,21 @@ var AgentCmd = cli.Command{
Usage: "drone server backoff interval",
Value: time.Second * 15,
},
cli.DurationFlag{
EnvVar: "DRONE_PING",
Name: "ping",
Usage: "drone server ping frequency",
Value: time.Minute * 5,
cli.IntFlag{
Name: "retry-limit",
EnvVar: "DRONE_RETRY_LIMIT",
Value: math.MaxInt32,
},
cli.BoolFlag{
EnvVar: "DRONE_DEBUG",
Name: "debug",
Usage: "start the agent in debug mode",
},
cli.DurationFlag{
EnvVar: "DRONE_TIMEOUT",
Name: "timeout",
Usage: "drone timeout due to log inactivity",
Value: time.Minute * 15,
},
cli.StringFlag{
EnvVar: "DRONE_FILTER",
Name: "filter",
Usage: "filter jobs processed by this agent",
},
cli.IntFlag{
EnvVar: "DRONE_MAX_LOGS",
Name: "max-log-size",
Usage: "drone maximum log size in megabytes",
Value: 5,
},
cli.StringSliceFlag{
EnvVar: "DRONE_PLUGIN_PRIVILEGED",
Name: "privileged",
Usage: "plugins that require privileged mode",
Value: &cli.StringSlice{
"plugins/docker",
"plugins/docker:*",
"plugins/gcr",
"plugins/gcr:*",
"plugins/ecr",
"plugins/ecr:*",
},
},
cli.StringFlag{
EnvVar: "DRONE_PLUGIN_NAMESPACE",
Name: "namespace",
Value: "plugins",
Usage: "default plugin image namespace",
},
cli.BoolTFlag{
EnvVar: "DRONE_PLUGIN_PULL",
Name: "pull",
Usage: "always pull latest plugin images",
},
cli.StringSliceFlag{
EnvVar: "DRONE_YAML_EXTENSION",
Name: "extension",
Usage: "custom plugin extension endpoint",
},
//
//
//
cli.BoolFlag{
EnvVar: "DRONE_CANARY",
Name: "canary",
Usage: "enable experimental features at your own risk",
},
// cli.StringFlag{
// Name: "endpoint",
// EnvVar: "DRONE_ENDPOINT,DRONE_SERVER",
// Value: "ws://localhost:9999/ws/rpc",
// },
// cli.DurationFlag{
// Name: "backoff",
// EnvVar: "DRONE_BACKOFF",
// Value: time.Second * 15,
// },
cli.IntFlag{
Name: "retry-limit",
EnvVar: "DRONE_RETRY_LIMIT",
Value: math.MaxInt32,
},
cli.IntFlag{
Name: "max-procs",
EnvVar: "DRONE_MAX_PROCS",
@ -179,139 +71,188 @@ var AgentCmd = cli.Command{
},
}
func start(c *cli.Context) {
if c.Bool("canary") {
if err := loop(c); err != nil {
fmt.Println(err)
os.Exit(1)
}
return
}
log := redlog.New(os.Stderr)
log.SetLevel(0)
logger.SetLogger(log)
// debug level if requested by user
if c.Bool("debug") {
logrus.SetLevel(logrus.DebugLevel)
log.SetLevel(1)
} else {
logrus.SetLevel(logrus.WarnLevel)
}
var accessToken string
if c.String("drone-secret") != "" {
// secretToken := c.String("drone-secret")
accessToken = c.String("drone-secret")
// accessToken, _ = token.New(token.AgentToken, "").Sign(secretToken)
} else {
accessToken = c.String("drone-token")
}
logger.Noticef("connecting to server %s", c.String("drone-server"))
server := strings.TrimRight(c.String("drone-server"), "/")
tls, err := dockerclient.TLSConfigFromCertPath(c.String("docker-cert-path"))
if err == nil {
tls.InsecureSkipVerify = c.Bool("docker-tls-verify")
}
docker, err := dockerclient.NewDockerClient(c.String("docker-host"), tls)
func loop(c *cli.Context) error {
endpoint, err := url.Parse(
c.String("drone-server"),
)
if err != nil {
logrus.Fatal(err)
return err
}
filter := rpc.Filter{
Labels: map[string]string{
"platform": c.String("platform"),
},
}
var client *stomp.Client
client, err := rpc.NewClient(
endpoint.String(),
rpc.WithRetryLimit(
c.Int("retry-limit"),
),
rpc.WithBackoff(
c.Duration("backoff"),
),
rpc.WithToken(
c.String("drone-secret"),
),
)
if err != nil {
return err
}
defer client.Close()
handler := func(m *stomp.Message) {
running.Add(1)
defer func() {
running.Done()
client.Ack(m.Ack)
sigterm := abool.New()
ctx := context.Background()
ctx = interrupt.WithContextFunc(ctx, func() {
println("ctrl+c received, terminating process")
sigterm.Set()
})
var wg sync.WaitGroup
parallel := c.Int("max-procs")
wg.Add(parallel)
for i := 0; i < parallel; i++ {
go func() {
defer wg.Done()
for {
if sigterm.IsSet() {
return
}
if err := run(ctx, client, filter); err != nil {
log.Printf("build runner encountered error: exiting: %s", err)
return
}
}
}()
r := pipelinet{
drone: client,
docker: docker,
config: config{
platform: c.String("docker-os") + "/" + c.String("docker-arch"),
timeout: c.Duration("timeout"),
namespace: c.String("namespace"),
privileged: c.StringSlice("privileged"),
pull: c.BoolT("pull"),
logs: int64(c.Int("max-log-size")) * 1000000,
extension: c.StringSlice("extension"),
},
}
work := new(model.Work)
m.Unmarshal(work)
r.run(work)
}
handleSignals()
backoff := c.Duration("backoff")
for {
// dial the drone server to establish a TCP connection.
client, err = stomp.Dial(server)
if err != nil {
logger.Warningf("connection failed, retry in %v. %s", backoff, err)
<-time.After(backoff)
continue
}
opts := []stomp.MessageOption{
stomp.WithCredentials("x-token", accessToken),
}
// initialize the stomp session and authenticate.
if err = client.Connect(opts...); err != nil {
logger.Warningf("session failed, retry in %v. %s", backoff, err)
<-time.After(backoff)
continue
}
opts = []stomp.MessageOption{
stomp.WithAck("client"),
stomp.WithPrefetch(
c.Int("docker-max-procs"),
),
}
if filter := c.String("filter"); filter != "" {
opts = append(opts, stomp.WithSelector(filter))
}
// subscribe to the pending build queue.
client.Subscribe("/queue/pending", stomp.HandlerFunc(func(m *stomp.Message) {
go handler(m) // HACK until we a channel based Subscribe implementation
}), opts...)
logger.Noticef("connection established, ready to process builds.")
<-client.Done()
logger.Warningf("connection interrupted, attempting to reconnect.")
}
wg.Wait()
return nil
}
// tracks running builds
var running sync.WaitGroup
const (
maxFileUpload = 5000000
maxLogsUpload = 5000000
)
func handleSignals() {
// Graceful shut-down on SIGINT/SIGTERM
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
signal.Notify(c, syscall.SIGTERM)
func run(ctx context.Context, client rpc.Peer, filter rpc.Filter) error {
log.Println("pipeline: request next execution")
// get the next job from the queue
work, err := client.Next(ctx, filter)
if err != nil {
return err
}
if work == nil {
return nil
}
log.Printf("pipeline: received next execution: %s", work.ID)
// new docker engine
engine, err := docker.NewEnv()
if err != nil {
return err
}
timeout := time.Hour
if minutes := work.Timeout; minutes != 0 {
timeout = time.Duration(minutes) * time.Minute
}
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
cancelled := abool.New()
go func() {
if werr := client.Wait(ctx, work.ID); werr != nil {
cancelled.SetTo(true)
log.Printf("pipeline: cancel signal received: %s: %s", work.ID, werr)
cancel()
} else {
log.Printf("pipeline: cancel channel closed: %s", work.ID)
}
}()
go func() {
<-c
logger.Warningf("SIGTERM received.")
logger.Warningf("wait for running builds to finish.")
running.Wait()
logger.Warningf("done.")
os.Exit(0)
for {
select {
case <-ctx.Done():
log.Printf("pipeline: cancel ping loop: %s", work.ID)
return
case <-time.After(time.Minute):
log.Printf("pipeline: ping queue: %s", work.ID)
client.Extend(ctx, work.ID)
}
}
}()
state := rpc.State{}
state.Started = time.Now().Unix()
err = client.Update(context.Background(), work.ID, state)
if err != nil {
log.Printf("pipeline: error updating pipeline status: %s: %s", work.ID, err)
}
var uploads sync.WaitGroup
defaultLogger := pipeline.LogFunc(func(proc *backend.Step, rc multipart.Reader) error {
part, rerr := rc.NextPart()
if rerr != nil {
return rerr
}
uploads.Add(1)
writer := rpc.NewLineWriter(client, work.ID, proc.Alias)
rlimit := io.LimitReader(part, maxLogsUpload)
io.Copy(writer, rlimit)
defer func() {
log.Printf("pipeline: finish uploading logs: %s: step %s", work.ID, proc.Alias)
uploads.Done()
}()
part, rerr = rc.NextPart()
if rerr != nil {
return nil
}
rlimit = io.LimitReader(part, maxFileUpload)
mime := part.Header().Get("Content-Type")
if serr := client.Upload(context.Background(), work.ID, mime, rlimit); serr != nil {
log.Printf("pipeline: cannot upload artifact: %s: %s: %s", work.ID, mime, serr)
}
return nil
})
err = pipeline.New(work.Config,
pipeline.WithContext(ctx),
pipeline.WithLogger(defaultLogger),
pipeline.WithTracer(pipeline.DefaultTracer),
pipeline.WithEngine(engine),
).Run()
state.Finished = time.Now().Unix()
state.Exited = true
if err != nil {
state.Error = err.Error()
if xerr, ok := err.(*pipeline.ExitError); ok {
state.ExitCode = xerr.Code
}
if xerr, ok := err.(*pipeline.OomError); ok {
state.ExitCode = xerr.Code
}
if cancelled.IsSet() {
state.ExitCode = 137
} else if state.ExitCode == 0 {
state.ExitCode = 1
}
}
log.Printf("pipeline: execution complete: %s", work.ID)
uploads.Wait()
err = client.Update(context.Background(), work.ID, state)
if err != nil {
log.Printf("Pipeine: error updating pipeline status: %s: %s", work.ID, err)
}
return nil
}

85
drone/agent/exec.go
View file

@ -1,85 +0,0 @@
package agent
import (
"time"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/agent"
"github.com/drone/drone/build/docker"
"github.com/drone/drone/model"
"github.com/drone/mq/stomp"
"github.com/samalba/dockerclient"
)
type config struct {
platform string
namespace string
privileged []string
pull bool
logs int64
timeout time.Duration
extension []string
}
type pipelinet struct {
drone *stomp.Client
docker dockerclient.Client
config config
}
func (r *pipelinet) run(w *model.Work) {
// defer func() {
// // r.drone.Ack(id, opts)
// }()
logrus.Infof("Starting build %s/%s#%d.%d",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number)
cancel := make(chan bool, 1)
engine := docker.NewClient(r.docker)
a := agent.Agent{
Update: agent.NewClientUpdater(r.drone),
Logger: agent.NewClientLogger(r.drone, w.Job.ID, r.config.logs),
Engine: engine,
Timeout: r.config.timeout,
Platform: r.config.platform,
Namespace: r.config.namespace,
Escalate: r.config.privileged,
Extension: r.config.extension,
Pull: r.config.pull,
}
cancelFunc := func(m *stomp.Message) {
defer m.Release()
id := m.Header.GetInt64("job-id")
if id == w.Job.ID {
cancel <- true
logrus.Infof("Cancel build %s/%s#%d.%d",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number)
}
}
// signal for canceling the build.
sub, err := r.drone.Subscribe("/topic/cancel", stomp.HandlerFunc(cancelFunc))
if err != nil {
logrus.Errorf("Error subscribing to /topic/cancel. %s", err)
}
defer func() {
r.drone.Unsubscribe(sub)
}()
a.Run(w, cancel)
// if err := r.drone.LogPost(w.Job.ID, ioutil.NopCloser(&buf)); err != nil {
// logrus.Errorf("Error sending logs for %s/%s#%d.%d",
// w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number)
// }
// stream.Close()
logrus.Infof("Finished build %s/%s#%d.%d",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number)
}

206
drone/agent/exp.go
View file

@ -1,206 +0,0 @@
package agent
import (
"context"
"io"
"log"
"net/url"
"sync"
"time"
"github.com/cncd/pipeline/pipeline"
"github.com/cncd/pipeline/pipeline/backend"
"github.com/cncd/pipeline/pipeline/backend/docker"
"github.com/cncd/pipeline/pipeline/interrupt"
"github.com/cncd/pipeline/pipeline/multipart"
"github.com/cncd/pipeline/pipeline/rpc"
"github.com/codegangsta/cli"
"github.com/tevino/abool"
)
func loop(c *cli.Context) error {
endpoint, err := url.Parse(
c.String("drone-server"),
)
if err != nil {
return err
}
filter := rpc.Filter{
Labels: map[string]string{
"platform": c.String("platform"),
},
}
client, err := rpc.NewClient(
endpoint.String(),
rpc.WithRetryLimit(
c.Int("retry-limit"),
),
rpc.WithBackoff(
c.Duration("backoff"),
),
rpc.WithToken(
c.String("drone-secret"),
),
)
if err != nil {
return err
}
defer client.Close()
sigterm := abool.New()
ctx := context.Background()
ctx = interrupt.WithContextFunc(ctx, func() {
println("ctrl+c received, terminating process")
sigterm.Set()
})
var wg sync.WaitGroup
parallel := c.Int("max-procs")
wg.Add(parallel)
for i := 0; i < parallel; i++ {
go func() {
defer wg.Done()
for {
if sigterm.IsSet() {
return
}
if err := run(ctx, client, filter); err != nil {
log.Printf("build runner encountered error: exiting: %s", err)
return
}
}
}()
}
wg.Wait()
return nil
}
const (
maxFileUpload = 5000000
maxLogsUpload = 5000000
)
func run(ctx context.Context, client rpc.Peer, filter rpc.Filter) error {
log.Println("pipeline: request next execution")
// get the next job from the queue
work, err := client.Next(ctx, filter)
if err != nil {
return err
}
if work == nil {
return nil
}
log.Printf("pipeline: received next execution: %s", work.ID)
// new docker engine
engine, err := docker.NewEnv()
if err != nil {
return err
}
timeout := time.Hour
if minutes := work.Timeout; minutes != 0 {
timeout = time.Duration(minutes) * time.Minute
}
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
cancelled := abool.New()
go func() {
if werr := client.Wait(ctx, work.ID); werr != nil {
cancelled.SetTo(true)
log.Printf("pipeline: cancel signal received: %s: %s", work.ID, werr)
cancel()
} else {
log.Printf("pipeline: cancel channel closed: %s", work.ID)
}
}()
go func() {
for {
select {
case <-ctx.Done():
log.Printf("pipeline: cancel ping loop: %s", work.ID)
return
case <-time.After(time.Minute):
log.Printf("pipeline: ping queue: %s", work.ID)
client.Extend(ctx, work.ID)
}
}
}()
state := rpc.State{}
state.Started = time.Now().Unix()
err = client.Update(context.Background(), work.ID, state)
if err != nil {
log.Printf("pipeline: error updating pipeline status: %s: %s", work.ID, err)
}
var uploads sync.WaitGroup
defaultLogger := pipeline.LogFunc(func(proc *backend.Step, rc multipart.Reader) error {
part, rerr := rc.NextPart()
if rerr != nil {
return rerr
}
uploads.Add(1)
writer := rpc.NewLineWriter(client, work.ID, proc.Alias)
rlimit := io.LimitReader(part, maxLogsUpload)
io.Copy(writer, rlimit)
defer func() {
log.Printf("pipeline: finish uploading logs: %s: step %s", work.ID, proc.Alias)
uploads.Done()
}()
part, rerr = rc.NextPart()
if rerr != nil {
return nil
}
rlimit = io.LimitReader(part, maxFileUpload)
mime := part.Header().Get("Content-Type")
if serr := client.Upload(context.Background(), work.ID, mime, rlimit); serr != nil {
log.Printf("pipeline: cannot upload artifact: %s: %s: %s", work.ID, mime, serr)
}
return nil
})
err = pipeline.New(work.Config,
pipeline.WithContext(ctx),
pipeline.WithLogger(defaultLogger),
pipeline.WithTracer(pipeline.DefaultTracer),
pipeline.WithEngine(engine),
).Run()
state.Finished = time.Now().Unix()
state.Exited = true
if err != nil {
state.Error = err.Error()
if xerr, ok := err.(*pipeline.ExitError); ok {
state.ExitCode = xerr.Code
}
if xerr, ok := err.(*pipeline.OomError); ok {
state.ExitCode = xerr.Code
}
if cancelled.IsSet() {
state.ExitCode = 137
} else if state.ExitCode == 0 {
state.ExitCode = 1
}
}
log.Printf("pipeline: execution complete: %s", work.ID)
uploads.Wait()
err = client.Update(context.Background(), work.ID, state)
if err != nil {
log.Printf("Pipeine: error updating pipeline status: %s: %s", work.ID, err)
}
return nil
}

64
drone/agent_list.go
View file

@ -1,64 +0,0 @@
package main
import (
"html/template"
"log"
"os"
"time"
"github.com/codegangsta/cli"
)
var agentsCmd = cli.Command{
Name: "agents",
Usage: "manage agents",
Action: func(c *cli.Context) {
if err := agentList(c); err != nil {
log.Fatalln(err)
}
},
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",
Usage: "format output",
Value: tmplAgentList,
},
},
}
func agentList(c *cli.Context) error {
client, err := newClient(c)
if err != nil {
return err
}
agents, err := client.AgentList()
if err != nil {
return err
}
tmpl, err := template.New("_").Funcs(funcMap).Parse(c.String("format") + "\n")
if err != nil {
return err
}
for _, agent := range agents {
tmpl.Execute(os.Stdout, agent)
}
return nil
}
// template for build list information
var tmplAgentList = "\x1b[33m{{ .Address }} \x1b[0m" + `
Platform: {{ .Platform }}
Capacity: {{ .Capacity }} concurrent build(s)
Pinged: {{ since .Updated }} ago
Uptime: {{ since .Created }}
`
var funcMap = template.FuncMap{
"since": func(t int64) string {
d := time.Now().Sub(time.Unix(t, 0))
return d.String()
},
}

2
drone/build.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var buildCmd = cli.Command{
Name: "build",

13
drone/build_info.go
View file

@ -1,22 +1,17 @@
package main
import (
"log"
"os"
"strconv"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var buildInfoCmd = cli.Command{
Name: "info",
Usage: "show build details",
Action: func(c *cli.Context) {
if err := buildInfo(c); err != nil {
log.Fatalln(err)
}
},
Name: "info",
Usage: "show build details",
Action: buildInfo,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/build_last.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var buildLastCmd = cli.Command{
Name: "last",
Usage: "show latest build details",
Action: func(c *cli.Context) {
if err := buildLast(c); err != nil {
log.Fatalln(err)
}
},
Name: "last",
Usage: "show latest build details",
Action: buildLast,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/build_list.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var buildListCmd = cli.Command{
Name: "list",
Usage: "show build history",
Action: func(c *cli.Context) {
if err := buildList(c); err != nil {
log.Fatalln(err)
}
},
Name: "list",
Usage: "show build history",
Action: buildList,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

6
drone/build_logs.go
View file

@ -6,8 +6,8 @@ import (
"log"
"strconv"
"github.com/codegangsta/cli"
"github.com/drone/drone/build"
"github.com/cncd/pipeline/pipeline/rpc"
"github.com/urfave/cli"
)
var buildLogsCmd = cli.Command{
@ -61,7 +61,7 @@ func buildLogs(c *cli.Context) error {
dec := json.NewDecoder(r)
fmt.Printf("Logs for build %s/%s#%d.%d\n", owner, name, number, job)
var line build.Line
var line rpc.Line
_, err = dec.Token()
if err != nil {

13
drone/build_queue.go
View file

@ -2,21 +2,16 @@ package main
import (
"fmt"
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var buildQueueCmd = cli.Command{
Name: "queue",
Usage: "show build queue",
Action: func(c *cli.Context) {
if err := buildQueue(c); err != nil {
log.Fatalln(err)
}
},
Name: "queue",
Usage: "show build queue",
Action: buildQueue,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/build_start.go
View file

@ -2,21 +2,16 @@ package main
import (
"fmt"
"log"
"strconv"
"github.com/codegangsta/cli"
"github.com/drone/drone/model"
"github.com/urfave/cli"
)
var buildStartCmd = cli.Command{
Name: "start",
Usage: "start a build",
Action: func(c *cli.Context) {
if err := buildStart(c); err != nil {
log.Fatalln(err)
}
},
Name: "start",
Usage: "start a build",
Action: buildStart,
Flags: []cli.Flag{
cli.BoolFlag{
Name: "fork",

13
drone/build_stop.go
View file

@ -2,20 +2,15 @@ package main
import (
"fmt"
"log"
"strconv"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var buildStopCmd = cli.Command{
Name: "stop",
Usage: "stop a build",
Action: func(c *cli.Context) {
if err := buildStop(c); err != nil {
log.Fatalln(err)
}
},
Name: "stop",
Usage: "stop a build",
Action: buildStop,
}
func buildStop(c *cli.Context) (err error) {

1
drone/compile.go
View file

@ -1 +0,0 @@
package main

13
drone/deploy.go
View file

@ -3,22 +3,17 @@ package main
import (
"fmt"
"html/template"
"log"
"os"
"strconv"
"github.com/codegangsta/cli"
"github.com/drone/drone/model"
"github.com/urfave/cli"
)
var deployCmd = cli.Command{
Name: "deploy",
Usage: "deploy code",
Action: func(c *cli.Context) {
if err := deploy(c); err != nil {
log.Fatalln(err)
}
},
Name: "deploy",
Usage: "deploy code",
Action: deploy,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

724
drone/exec.go
View file

@ -1,22 +1,26 @@
package main
import (
"fmt"
"io/ioutil"
"context"
"io"
"log"
"os"
"os/signal"
"path"
"path/filepath"
"strings"
"time"
"github.com/drone/drone/agent"
"github.com/drone/drone/build/docker"
"github.com/drone/drone/model"
"github.com/drone/drone/yaml"
"github.com/cncd/pipeline/pipeline"
"github.com/cncd/pipeline/pipeline/backend"
"github.com/cncd/pipeline/pipeline/backend/docker"
"github.com/cncd/pipeline/pipeline/frontend"
"github.com/cncd/pipeline/pipeline/frontend/yaml"
"github.com/cncd/pipeline/pipeline/frontend/yaml/compiler"
"github.com/cncd/pipeline/pipeline/interrupt"
"github.com/cncd/pipeline/pipeline/multipart"
"github.com/drone/envsubst"
"github.com/codegangsta/cli"
"github.com/joho/godotenv"
"github.com/urfave/cli"
)
var execCmd = cli.Command{
@ -33,439 +37,387 @@ var execCmd = cli.Command{
Usage: "build from local directory",
EnvVar: "DRONE_LOCAL",
},
cli.StringSliceFlag{
Name: "secret",
Usage: "build secrets in KEY=VALUE format",
EnvVar: "DRONE_SECRET",
},
cli.StringFlag{
Name: "secrets-file",
Usage: "build secrets file in KEY=VALUE format",
EnvVar: "DRONE_SECRETS_FILE",
},
cli.StringSliceFlag{
Name: "matrix",
Usage: "build matrix in KEY=VALUE format",
EnvVar: "DRONE_MATRIX",
},
cli.DurationFlag{
Name: "timeout",
Usage: "build timeout",
Value: time.Hour,
EnvVar: "DRONE_TIMEOUT",
},
cli.DurationFlag{
Name: "timeout.inactivity",
Usage: "build timeout for inactivity",
Value: time.Minute * 15,
EnvVar: "DRONE_TIMEOUT_INACTIVITY",
},
cli.BoolFlag{
EnvVar: "DRONE_PLUGIN_PULL",
Name: "pull",
Usage: "always pull latest plugin images",
cli.StringSliceFlag{
Name: "volumes",
Usage: "build volumes",
EnvVar: "DRONE_VOLUMES",
},
cli.StringSliceFlag{
EnvVar: "DRONE_PLUGIN_PRIVILEGED",
Name: "privileged",
Usage: "plugins that require privileged mode",
Name: "privileged",
Usage: "privileged plugins",
Value: &cli.StringSlice{
"plugins/docker",
"plugins/docker:*",
"plugins/gcr",
"plugins/gcr:*",
"plugins/ecr",
"plugins/ecr:*",
},
},
// Docker daemon flags
cli.StringFlag{
EnvVar: "DOCKER_HOST",
Name: "docker-host",
Usage: "docker daemon address",
Value: "unix:///var/run/docker.sock",
},
cli.BoolFlag{
EnvVar: "DOCKER_TLS_VERIFY",
Name: "docker-tls-verify",
Usage: "docker daemon supports tlsverify",
},
cli.StringFlag{
EnvVar: "DOCKER_CERT_PATH",
Name: "docker-cert-path",
Usage: "docker certificate directory",
Value: "",
},
//
// Please note the below flags are mirrored in the plugin starter kit and
// should be kept synchronized.
// https://github.com/drone/drone-plugin-starter
// Please note the below flags are mirrored in the pipec and
// should be kept synchronized. Do not edit directly
// https://github.com/cncd/pipeline/pipec
//
//
// workspace default
//
cli.StringFlag{
Name: "repo.fullname",
Usage: "repository full name",
EnvVar: "DRONE_REPO",
Name: "workspace-base",
Value: "/pipeline",
EnvVar: "DRONE_WORKSPACE_BASE",
},
cli.StringFlag{
Name: "repo.owner",
Usage: "repository owner",
EnvVar: "DRONE_REPO_OWNER",
Name: "workspace-path",
Value: "src",
EnvVar: "DRONE_WORKSPACE_PATH",
},
//
// netrc parameters
//
cli.StringFlag{
Name: "repo.name",
Usage: "repository name",
EnvVar: "DRONE_REPO_NAME",
},
cli.StringFlag{
Name: "repo.type",
Value: "git",
Usage: "repository type",
EnvVar: "DRONE_REPO_SCM",
},
cli.StringFlag{
Name: "repo.link",
Usage: "repository link",
EnvVar: "DRONE_REPO_LINK",
},
cli.StringFlag{
Name: "repo.avatar",
Usage: "repository avatar",
EnvVar: "DRONE_REPO_AVATAR",
},
cli.StringFlag{
Name: "repo.branch",
Usage: "repository default branch",
EnvVar: "DRONE_REPO_BRANCH",
},
cli.BoolFlag{
Name: "repo.private",
Usage: "repository is private",
EnvVar: "DRONE_REPO_PRIVATE",
},
cli.BoolTFlag{
Name: "repo.trusted",
Usage: "repository is trusted",
EnvVar: "DRONE_REPO_TRUSTED",
},
cli.StringFlag{
Name: "remote.url",
Usage: "git remote url",
EnvVar: "DRONE_REMOTE_URL",
},
cli.StringFlag{
Name: "commit.sha",
Usage: "git commit sha",
EnvVar: "DRONE_COMMIT_SHA",
},
cli.StringFlag{
Name: "commit.ref",
Value: "refs/heads/master",
Usage: "git commit ref",
EnvVar: "DRONE_COMMIT_REF",
},
cli.StringFlag{
Name: "commit.branch",
Value: "master",
Usage: "git commit branch",
EnvVar: "DRONE_COMMIT_BRANCH",
},
cli.StringFlag{
Name: "commit.message",
Usage: "git commit message",
EnvVar: "DRONE_COMMIT_MESSAGE",
},
cli.StringFlag{
Name: "commit.link",
Usage: "git commit link",
EnvVar: "DRONE_COMMIT_LINK",
},
cli.StringFlag{
Name: "commit.author.name",
Usage: "git author name",
EnvVar: "DRONE_COMMIT_AUTHOR",
},
cli.StringFlag{
Name: "commit.author.email",
Usage: "git author email",
EnvVar: "DRONE_COMMIT_AUTHOR_EMAIL",
},
cli.StringFlag{
Name: "commit.author.avatar",
Usage: "git author avatar",
EnvVar: "DRONE_COMMIT_AUTHOR_AVATAR",
},
cli.StringFlag{
Name: "build.event",
Value: "push",
Usage: "build event",
EnvVar: "DRONE_BUILD_EVENT",
},
cli.IntFlag{
Name: "build.number",
Usage: "build number",
EnvVar: "DRONE_BUILD_NUMBER",
},
cli.IntFlag{
Name: "build.created",
Usage: "build created",
EnvVar: "DRONE_BUILD_CREATED",
},
cli.IntFlag{
Name: "build.started",
Usage: "build started",
EnvVar: "DRONE_BUILD_STARTED",
},
cli.IntFlag{
Name: "build.finished",
Usage: "build finished",
EnvVar: "DRONE_BUILD_FINISHED",
},
cli.StringFlag{
Name: "build.status",
Usage: "build status",
Value: "success",
EnvVar: "DRONE_BUILD_STATUS",
},
cli.StringFlag{
Name: "build.link",
Usage: "build link",
EnvVar: "DRONE_BUILD_LINK",
},
cli.StringFlag{
Name: "build.deploy",
Usage: "build deployment target",
EnvVar: "DRONE_DEPLOY_TO",
},
cli.BoolTFlag{
Name: "yaml.verified",
Usage: "build yaml is verified",
EnvVar: "DRONE_YAML_VERIFIED",
},
cli.BoolTFlag{
Name: "yaml.signed",
Usage: "build yaml is signed",
EnvVar: "DRONE_YAML_SIGNED",
},
cli.IntFlag{
Name: "prev.build.number",
Usage: "previous build number",
EnvVar: "DRONE_PREV_BUILD_NUMBER",
},
cli.StringFlag{
Name: "prev.build.status",
Usage: "previous build status",
EnvVar: "DRONE_PREV_BUILD_STATUS",
},
cli.StringFlag{
Name: "prev.commit.sha",
Usage: "previous build sha",
EnvVar: "DRONE_PREV_COMMIT_SHA",
},
cli.StringFlag{
Name: "netrc.username",
Usage: "previous build sha",
Name: "netrc-username",
EnvVar: "DRONE_NETRC_USERNAME",
},
cli.StringFlag{
Name: "netrc.password",
Usage: "previous build sha",
Name: "netrc-password",
EnvVar: "DRONE_NETRC_PASSWORD",
},
cli.StringFlag{
Name: "netrc.machine",
Usage: "previous build sha",
Name: "netrc-machine",
EnvVar: "DRONE_NETRC_MACHINE",
},
//
// metadata parameters
//
cli.StringFlag{
Name: "system-arch",
Value: "linux/amd64",
EnvVar: "DRONE_SYSTEM_ARCH",
},
cli.StringFlag{
Name: "system-name",
Value: "pipec",
EnvVar: "DRONE_SYSTEM_NAME",
},
cli.StringFlag{
Name: "system-link",
Value: "https://github.com/cncd/pipec",
EnvVar: "DRONE_SYSTEM_LINK",
},
cli.StringFlag{
Name: "repo-name",
EnvVar: "DRONE_REPO_NAME",
},
cli.StringFlag{
Name: "repo-link",
EnvVar: "DRONE_REPO_LINK",
},
cli.StringFlag{
Name: "repo-remote-url",
EnvVar: "DRONE_REPO_REMOTE",
},
cli.StringFlag{
Name: "repo-private",
EnvVar: "DRONE_REPO_PRIVATE",
},
cli.IntFlag{
Name: "build-number",
EnvVar: "DRONE_BUILD_NUMBER",
},
cli.Int64Flag{
Name: "build-created",
EnvVar: "DRONE_BUILD_CREATED",
},
cli.Int64Flag{
Name: "build-started",
EnvVar: "DRONE_BUILD_STARTED",
},
cli.Int64Flag{
Name: "build-finished",
EnvVar: "DRONE_BUILD_FINISHED",
},
cli.StringFlag{
Name: "build-status",
EnvVar: "DRONE_BUILD_STATUS",
},
cli.StringFlag{
Name: "build-event",
EnvVar: "DRONE_BUILD_EVENT",
},
cli.StringFlag{
Name: "build-link",
EnvVar: "DRONE_BUILD_LINK",
},
cli.StringFlag{
Name: "build-target",
EnvVar: "DRONE_BUILD_TARGET",
},
cli.StringFlag{
Name: "commit-sha",
EnvVar: "DRONE_COMMIT_SHA",
},
cli.StringFlag{
Name: "commit-ref",
EnvVar: "DRONE_COMMIT_REF",
},
cli.StringFlag{
Name: "commit-refspec",
EnvVar: "DRONE_COMMIT_REFSPEC",
},
cli.StringFlag{
Name: "commit-branch",
EnvVar: "DRONE_COMMIT_BRANCH",
},
cli.StringFlag{
Name: "commit-message",
EnvVar: "DRONE_COMMIT_MESSAGE",
},
cli.StringFlag{
Name: "commit-author-name",
EnvVar: "DRONE_COMMIT_AUTHOR_NAME",
},
cli.StringFlag{
Name: "commit-author-avatar",
EnvVar: "DRONE_COMMIT_AUTHOR_AVATAR",
},
cli.StringFlag{
Name: "commit-author-email",
EnvVar: "DRONE_COMMIT_AUTHOR_EMAIL",
},
cli.IntFlag{
Name: "prev-build-number",
EnvVar: "DRONE_PREV_BUILD_NUMBER",
},
cli.Int64Flag{
Name: "prev-build-created",
EnvVar: "DRONE_PREV_BUILD_CREATED",
},
cli.Int64Flag{
Name: "prev-build-started",
EnvVar: "DRONE_PREV_BUILD_STARTED",
},
cli.Int64Flag{
Name: "prev-build-finished",
EnvVar: "DRONE_PREV_BUILD_FINISHED",
},
cli.StringFlag{
Name: "prev-build-status",
EnvVar: "DRONE_PREV_BUILD_STATUS",
},
cli.StringFlag{
Name: "prev-build-event",
EnvVar: "DRONE_PREV_BUILD_EVENT",
},
cli.StringFlag{
Name: "prev-build-link",
EnvVar: "DRONE_PREV_BUILD_LINK",
},
cli.StringFlag{
Name: "prev-commit-sha",
EnvVar: "DRONE_PREV_COMMIT_SHA",
},
cli.StringFlag{
Name: "prev-commit-ref",
EnvVar: "DRONE_PREV_COMMIT_REF",
},
cli.StringFlag{
Name: "prev-commit-refspec",
EnvVar: "DRONE_PREV_COMMIT_REFSPEC",
},
cli.StringFlag{
Name: "prev-commit-branch",
EnvVar: "DRONE_PREV_COMMIT_BRANCH",
},
cli.StringFlag{
Name: "prev-commit-message",
EnvVar: "DRONE_PREV_COMMIT_MESSAGE",
},
cli.StringFlag{
Name: "prev-commit-author-name",
EnvVar: "DRONE_PREV_COMMIT_AUTHOR_NAME",
},
cli.StringFlag{
Name: "prev-commit-author-avatar",
EnvVar: "DRONE_PREV_COMMIT_AUTHOR_AVATAR",
},
cli.StringFlag{
Name: "prev-commit-author-email",
EnvVar: "DRONE_PREV_COMMIT_AUTHOR_EMAIL",
},
cli.IntFlag{
Name: "job-number",
EnvVar: "DRONE_JOB_NUMBER",
},
},
}
func exec(c *cli.Context) error {
sigterm := make(chan os.Signal, 1)
cancelc := make(chan bool, 1)
signal.Notify(sigterm, os.Interrupt)
go func() {
<-sigterm
cancelc <- true
}()
path := c.Args().First()
if path == "" {
path = ".drone.yml"
file := c.Args().First()
if file == "" {
file = ".drone.yml"
}
path, _ = filepath.Abs(path)
dir := filepath.Dir(path)
file, err := ioutil.ReadFile(path)
metadata := metadataFromContext(c)
environ := metadata.Environ()
for k, v := range metadata.EnvironDrone() {
environ[k] = v
}
for _, env := range os.Environ() {
k := strings.Split(env, "=")[0]
v := strings.Split(env, "=")[1]
environ[k] = v
}
tmpl, err := envsubst.ParseFile(file)
if err != nil {
return err
}
confstr, err := tmpl.Execute(func(name string) string {
return environ[name]
})
if err != nil {
return err
}
engine, err := docker.New(
c.String("docker-host"),
c.String("docker-cert-path"),
c.Bool("docker-tls-verify"),
)
conf, err := yaml.ParseString(confstr)
if err != nil {
return err
}
a := agent.Agent{
Update: agent.NoopUpdateFunc,
Logger: agent.TermLoggerFunc,
Engine: engine,
Timeout: c.Duration("timeout.inactivity"),
Platform: "linux/amd64",
Escalate: c.StringSlice("privileged"),
Netrc: []string{},
Local: dir,
Pull: c.Bool("pull"),
}
payload := &model.Work{
Yaml: string(file),
Verified: c.BoolT("yaml.verified"),
Signed: c.BoolT("yaml.signed"),
Repo: &model.Repo{
FullName: c.String("repo.fullname"),
Owner: c.String("repo.owner"),
Name: c.String("repo.name"),
Kind: c.String("repo.type"),
Link: c.String("repo.link"),
Branch: c.String("repo.branch"),
Avatar: c.String("repo.avatar"),
Timeout: int64(c.Duration("timeout").Minutes()),
IsPrivate: c.Bool("repo.private"),
IsTrusted: c.BoolT("repo.trusted"),
Clone: c.String("remote.url"),
},
System: &model.System{
Link: c.GlobalString("server"),
},
Secrets: getSecrets(c),
Netrc: &model.Netrc{
Login: c.String("netrc.username"),
Password: c.String("netrc.password"),
Machine: c.String("netrc.machine"),
},
Build: &model.Build{
Commit: c.String("commit.sha"),
Branch: c.String("commit.branch"),
Ref: c.String("commit.ref"),
Link: c.String("commit.link"),
Message: c.String("commit.message"),
Author: c.String("commit.author.name"),
Email: c.String("commit.author.email"),
Avatar: c.String("commit.author.avatar"),
Number: c.Int("build.number"),
Event: c.String("build.event"),
Deploy: c.String("build.deploy"),
},
BuildLast: &model.Build{
Number: c.Int("prev.build.number"),
Status: c.String("prev.build.status"),
Commit: c.String("prev.commit.sha"),
},
}
if len(c.StringSlice("matrix")) > 0 {
p := *payload
p.Job = &model.Job{
Environment: getMatrix(c),
// configure volumes for local execution
volumes := c.StringSlice("volumes")
if c.Bool("local") {
var (
workspaceBase = conf.Workspace.Base
workspacePath = conf.Workspace.Path
)
if workspaceBase == "" {
workspaceBase = c.String("workspace-base")
}
return a.Run(&p, cancelc)
if workspacePath == "" {
workspacePath = c.String("workspace-path")
}
dir, _ := filepath.Abs(filepath.Dir(file))
volumes = append(volumes, dir+":"+path.Join(workspaceBase, workspacePath))
}
axes, err := yaml.ParseMatrix(file)
// compiles the yaml file
compiled := compiler.New(
compiler.WithEscalated(
c.StringSlice("privileged")...,
),
compiler.WithVolumes(volumes...),
compiler.WithWorkspace(
c.String("workspace-base"),
c.String("workspace-path"),
),
compiler.WithPrefix(
c.String("prefix"),
),
compiler.WithProxy(),
compiler.WithLocal(
c.Bool("local"),
),
compiler.WithNetrc(
c.String("netrc-username"),
c.String("netrc-password"),
c.String("netrc-machine"),
),
compiler.WithMetadata(metadata),
).Compile(conf)
engine, err := docker.NewEnv()
if err != nil {
return err
}
if len(axes) == 0 {
axes = append(axes, yaml.Axis{})
}
ctx, cancel := context.WithTimeout(context.Background(), c.Duration("timeout"))
defer cancel()
ctx = interrupt.WithContext(ctx)
var jobs []*model.Job
count := 0
for _, axis := range axes {
jobs = append(jobs, &model.Job{
Number: count,
Environment: axis,
})
count++
}
for _, job := range jobs {
fmt.Printf("Running Matrix job #%d\n", job.Number)
p := *payload
p.Job = job
if err := a.Run(&p, cancelc); err != nil {
return err
}
}
return nil
return pipeline.New(compiled,
pipeline.WithContext(ctx),
pipeline.WithLogger(defaultLogger),
pipeline.WithTracer(pipeline.DefaultTracer),
pipeline.WithLogger(defaultLogger),
pipeline.WithEngine(engine),
).Run()
}
// helper function to retrieve matrix variables.
func getMatrix(c *cli.Context) map[string]string {
envs := map[string]string{}
for _, s := range c.StringSlice("matrix") {
parts := strings.SplitN(s, "=", 2)
if len(parts) != 2 {
continue
}
k := parts[0]
v := parts[1]
envs[k] = v
}
return envs
}
// helper function to retrieve secret variables.
func getSecrets(c *cli.Context) []*model.Secret {
var secrets []*model.Secret
if c.String("secrets-file") != "" {
envs, _ := godotenv.Read(c.String("secrets-file"))
for k, v := range envs {
secret := &model.Secret{
Name: k,
Value: v,
Events: []string{
model.EventPull,
model.EventPush,
model.EventTag,
model.EventDeploy,
// return the metadata from the cli context.
func metadataFromContext(c *cli.Context) frontend.Metadata {
return frontend.Metadata{
Repo: frontend.Repo{
Name: c.String("repo-name"),
Link: c.String("repo-link"),
Remote: c.String("repo-remote-url"),
Private: c.Bool("repo-private"),
},
Curr: frontend.Build{
Number: c.Int("build-number"),
Created: c.Int64("build-created"),
Started: c.Int64("build-started"),
Finished: c.Int64("build-finished"),
Status: c.String("build-status"),
Event: c.String("build-event"),
Link: c.String("build-link"),
Target: c.String("build-target"),
Commit: frontend.Commit{
Sha: c.String("commit-sha"),
Ref: c.String("commit-ref"),
Refspec: c.String("commit-refspec"),
Branch: c.String("commit-branch"),
Message: c.String("commit-message"),
Author: frontend.Author{
Name: c.String("commit-author-name"),
Email: c.String("commit-author-email"),
Avatar: c.String("commit-author-avatar"),
},
Images: []string{"*"},
}
secrets = append(secrets, secret)
}
}
for _, s := range c.StringSlice("secret") {
parts := strings.SplitN(s, "=", 2)
if len(parts) != 2 {
continue
}
secret := &model.Secret{
Name: parts[0],
Value: parts[1],
Events: []string{
model.EventPull,
model.EventPush,
model.EventTag,
model.EventDeploy,
},
Images: []string{"*"},
}
secrets = append(secrets, secret)
},
Prev: frontend.Build{
Number: c.Int("prev-build-number"),
Created: c.Int64("prev-build-created"),
Started: c.Int64("prev-build-started"),
Finished: c.Int64("prev-build-finished"),
Status: c.String("prev-build-status"),
Event: c.String("prev-build-event"),
Link: c.String("prev-build-link"),
Commit: frontend.Commit{
Sha: c.String("prev-commit-sha"),
Ref: c.String("prev-commit-ref"),
Refspec: c.String("prev-commit-refspec"),
Branch: c.String("prev-commit-branch"),
Message: c.String("prev-commit-message"),
Author: frontend.Author{
Name: c.String("prev-commit-author-name"),
Email: c.String("prev-commit-author-email"),
Avatar: c.String("prev-commit-author-avatar"),
},
},
},
Job: frontend.Job{
Number: c.Int("job-number"),
},
Sys: frontend.System{
Name: c.String("system-name"),
Link: c.String("system-link"),
Arch: c.String("system-arch"),
},
}
return secrets
}
var defaultLogger = pipeline.LogFunc(func(proc *backend.Step, rc multipart.Reader) error {
part, err := rc.NextPart()
if err != nil {
return err
}
io.Copy(os.Stderr, part)
return nil
})

2
drone/global.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var globalCmd = cli.Command{
Name: "global",

2
drone/global_secret.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var globalSecretCmd = cli.Command{
Name: "secret",

14
drone/global_secret_add.go
View file

@ -1,21 +1,13 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var globalSecretAddCmd = cli.Command{
Name: "add",
Usage: "adds a secret",
ArgsUsage: "[key] [value]",
Action: func(c *cli.Context) {
if err := globalSecretAdd(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretAddFlags(),
Action: globalSecretAdd,
Flags: secretAddFlags(),
}
func globalSecretAdd(c *cli.Context) error {

18
drone/global_secret_list.go
View file

@ -1,20 +1,12 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var globalSecretListCmd = cli.Command{
Name: "ls",
Usage: "list all secrets",
Action: func(c *cli.Context) {
if err := globalSecretList(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretListFlags(),
Name: "ls",
Usage: "list all secrets",
Action: globalSecretList,
Flags: secretListFlags(),
}
func globalSecretList(c *cli.Context) error {

16
drone/global_secret_rm.go
View file

@ -1,19 +1,11 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var globalSecretRemoveCmd = cli.Command{
Name: "rm",
Usage: "remove a secret",
Action: func(c *cli.Context) {
if err := globalSecretRemove(c); err != nil {
log.Fatalln(err)
}
},
Name: "rm",
Usage: "remove a secret",
Action: globalSecretRemove,
}
func globalSecretRemove(c *cli.Context) error {

13
drone/info.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var infoCmd = cli.Command{
Name: "info",
Usage: "show information about the current user",
Action: func(c *cli.Context) {
if err := info(c); err != nil {
log.Fatalln(err)
}
},
Name: "info",
Usage: "show information about the current user",
Action: info,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

9
drone/main.go
View file

@ -1,14 +1,15 @@
package main
import (
"fmt"
"os"
"github.com/drone/drone/drone/agent"
"github.com/drone/drone/version"
"github.com/codegangsta/cli"
"github.com/ianschenck/envflag"
_ "github.com/joho/godotenv/autoload"
"github.com/urfave/cli"
)
func main() {
@ -32,7 +33,6 @@ func main() {
}
app.Commands = []cli.Command{
agent.AgentCmd,
agentsCmd,
buildCmd,
deployCmd,
execCmd,
@ -46,5 +46,8 @@ func main() {
globalCmd,
}
app.Run(os.Args)
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}

2
drone/org.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var orgCmd = cli.Command{
Name: "org",

2
drone/org_secret.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var orgSecretCmd = cli.Command{
Name: "secret",

14
drone/org_secret_add.go
View file

@ -1,21 +1,13 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var orgSecretAddCmd = cli.Command{
Name: "add",
Usage: "adds a secret",
ArgsUsage: "[org] [key] [value]",
Action: func(c *cli.Context) {
if err := orgSecretAdd(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretAddFlags(),
Action: orgSecretAdd,
Flags: secretAddFlags(),
}
func orgSecretAdd(c *cli.Context) error {

18
drone/org_secret_list.go
View file

@ -1,20 +1,12 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var orgSecretListCmd = cli.Command{
Name: "ls",
Usage: "list all secrets",
Action: func(c *cli.Context) {
if err := orgSecretList(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretListFlags(),
Name: "ls",
Usage: "list all secrets",
Action: orgSecretList,
Flags: secretListFlags(),
}
func orgSecretList(c *cli.Context) error {

2
drone/org_secret_rm.go
View file

@ -3,7 +3,7 @@ package main
import (
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var orgSecretRemoveCmd = cli.Command{

2
drone/repo.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var repoCmd = cli.Command{
Name: "repo",

13
drone/repo_add.go
View file

@ -2,19 +2,14 @@ package main
import (
"fmt"
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var repoAddCmd = cli.Command{
Name: "add",
Usage: "add a repository",
Action: func(c *cli.Context) {
if err := repoAdd(c); err != nil {
log.Fatalln(err)
}
},
Name: "add",
Usage: "add a repository",
Action: repoAdd,
}
func repoAdd(c *cli.Context) error {

13
drone/repo_chown.go
View file

@ -2,19 +2,14 @@ package main
import (
"fmt"
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var repoChownCmd = cli.Command{
Name: "chown",
Usage: "assume ownership of a repository",
Action: func(c *cli.Context) {
if err := repoChown(c); err != nil {
log.Fatalln(err)
}
},
Name: "chown",
Usage: "assume ownership of a repository",
Action: repoChown,
}
func repoChown(c *cli.Context) error {

13
drone/repo_info.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var repoInfoCmd = cli.Command{
Name: "info",
Usage: "show repository details",
Action: func(c *cli.Context) {
if err := repoInfo(c); err != nil {
log.Fatalln(err)
}
},
Name: "info",
Usage: "show repository details",
Action: repoInfo,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/repo_list.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var repoListCmd = cli.Command{
Name: "ls",
Usage: "list all repos",
Action: func(c *cli.Context) {
if err := repoList(c); err != nil {
log.Fatalln(err)
}
},
Name: "ls",
Usage: "list all repos",
Action: repoList,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/repo_rm.go
View file

@ -2,19 +2,14 @@ package main
import (
"fmt"
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var repoRemoveCmd = cli.Command{
Name: "rm",
Usage: "remove a repository",
Action: func(c *cli.Context) {
if err := repoRemove(c); err != nil {
log.Fatalln(err)
}
},
Name: "rm",
Usage: "remove a repository",
Action: repoRemove,
}
func repoRemove(c *cli.Context) error {

2
drone/secret.go
View file

@ -6,8 +6,8 @@ import (
"strings"
"text/template"
"github.com/codegangsta/cli"
"github.com/drone/drone/model"
"github.com/urfave/cli"
)
var secretCmd = cli.Command{

14
drone/secret_add.go
View file

@ -1,21 +1,13 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var secretAddCmd = cli.Command{
Name: "add",
Usage: "adds a secret",
ArgsUsage: "[repo] [key] [value]",
Action: func(c *cli.Context) {
if err := secretAdd(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretAddFlags(),
Action: secretAdd,
Flags: secretAddFlags(),
}
func secretAdd(c *cli.Context) error {

18
drone/secret_list.go
View file

@ -1,20 +1,12 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var secretListCmd = cli.Command{
Name: "ls",
Usage: "list all secrets",
Action: func(c *cli.Context) {
if err := secretList(c); err != nil {
log.Fatalln(err)
}
},
Flags: secretListFlags(),
Name: "ls",
Usage: "list all secrets",
Action: secretList,
Flags: secretListFlags(),
}
func secretList(c *cli.Context) error {

16
drone/secret_rm.go
View file

@ -1,19 +1,11 @@
package main
import (
"log"
"github.com/codegangsta/cli"
)
import "github.com/urfave/cli"
var secretRemoveCmd = cli.Command{
Name: "rm",
Usage: "remove a secret",
Action: func(c *cli.Context) {
if err := secretRemove(c); err != nil {
log.Fatalln(err)
}
},
Name: "rm",
Usage: "remove a secret",
Action: secretRemove,
}
func secretRemove(c *cli.Context) error {

14
drone/server.go
View file

@ -8,18 +8,14 @@ import (
"github.com/drone/drone/router/middleware"
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/gin-gonic/contrib/ginrus"
"github.com/urfave/cli"
)
var serverCmd = cli.Command{
Name: "server",
Usage: "starts the drone server daemon",
Action: func(c *cli.Context) {
if err := server(c); err != nil {
logrus.Fatal(err)
}
},
Name: "server",
Usage: "starts the drone server daemon",
Action: server,
Flags: []cli.Flag{
cli.BoolFlag{
EnvVar: "DRONE_DEBUG",
@ -301,8 +297,6 @@ func server(c *cli.Context) error {
middleware.Cache(c),
middleware.Store(c),
middleware.Remote(c),
middleware.Agents(c),
middleware.Broker(c),
)
// start the server with tls enabled

13
drone/sign.go
View file

@ -2,19 +2,14 @@ package main
import (
"io/ioutil"
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var signCmd = cli.Command{
Name: "sign",
Usage: "creates a secure yaml file",
Action: func(c *cli.Context) {
if err := sign(c); err != nil {
log.Fatalln(err)
}
},
Name: "sign",
Usage: "creates a secure yaml file",
Action: sign,
Flags: []cli.Flag{
cli.StringFlag{
Name: "in",

2
drone/user.go
View file

@ -1,6 +1,6 @@
package main
import "github.com/codegangsta/cli"
import "github.com/urfave/cli"
var userCmd = cli.Command{
Name: "user",

13
drone/user_add.go
View file

@ -2,20 +2,15 @@ package main
import (
"fmt"
"log"
"github.com/codegangsta/cli"
"github.com/drone/drone/model"
"github.com/urfave/cli"
)
var userAddCmd = cli.Command{
Name: "add",
Usage: "adds a user",
Action: func(c *cli.Context) {
if err := userAdd(c); err != nil {
log.Fatalln(err)
}
},
Name: "add",
Usage: "adds a user",
Action: userAdd,
}
func userAdd(c *cli.Context) error {

13
drone/user_info.go
View file

@ -2,21 +2,16 @@ package main
import (
"fmt"
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var userInfoCmd = cli.Command{
Name: "info",
Usage: "show user details",
Action: func(c *cli.Context) {
if err := userInfo(c); err != nil {
log.Fatalln(err)
}
},
Name: "info",
Usage: "show user details",
Action: userInfo,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/user_list.go
View file

@ -1,21 +1,16 @@
package main
import (
"log"
"os"
"text/template"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var userListCmd = cli.Command{
Name: "ls",
Usage: "list all users",
Action: func(c *cli.Context) {
if err := userList(c); err != nil {
log.Fatalln(err)
}
},
Name: "ls",
Usage: "list all users",
Action: userList,
Flags: []cli.Flag{
cli.StringFlag{
Name: "format",

13
drone/user_rm.go
View file

@ -2,19 +2,14 @@ package main
import (
"fmt"
"log"
"github.com/codegangsta/cli"
"github.com/urfave/cli"
)
var userRemoveCmd = cli.Command{
Name: "rm",
Usage: "remove a user",
Action: func(c *cli.Context) {
if err := userRemove(c); err != nil {
log.Fatalln(err)
}
},
Name: "rm",
Usage: "remove a user",
Action: userRemove,
}
func userRemove(c *cli.Context) error {

2
drone/util.go
View file

@ -9,8 +9,8 @@ import (
"github.com/drone/drone/client"
"github.com/codegangsta/cli"
"github.com/jackspirou/syscerts"
"github.com/urfave/cli"
)
func newClient(c *cli.Context) (client.Client, error) {

33
router/middleware/agent.go
View file

@ -1,33 +0,0 @@
package middleware
import (
"github.com/codegangsta/cli"
"github.com/drone/drone/shared/token"
"github.com/Sirupsen/logrus"
"github.com/gin-gonic/gin"
)
const agentKey = "agent"
// Agents is a middleware function that initializes the authorization middleware
// for agents to connect to the queue.
func Agents(cli *cli.Context) gin.HandlerFunc {
secret := cli.String("agent-secret")
if secret == "" {
logrus.Fatalf("failed to generate token from DRONE_AGENT_SECRET")
}
t := token.New(token.AgentToken, secret)
s, err := t.Sign(secret)
if err != nil {
logrus.Fatalf("failed to generate token from DRONE_AGENT_SECRET. %s", err)
}
logrus.Infof("using agent secret %s", secret)
logrus.Warnf("agents can connect with token %s", s)
return func(c *gin.Context) {
c.Set(agentKey, secret)
}
}

63
router/middleware/broker.go
View file

@ -1,63 +0,0 @@
package middleware
import (
"os"
"sync"
handlers "github.com/drone/drone/server"
"github.com/codegangsta/cli"
"github.com/drone/mq/logger"
"github.com/drone/mq/server"
"github.com/drone/mq/stomp"
"github.com/Sirupsen/logrus"
"github.com/gin-gonic/gin"
"github.com/tidwall/redlog"
)
const (
serverKey = "broker"
clientKey = "stomp.client" // mirrored from stomp/context
)
// Broker is a middleware function that initializes the broker
// and adds the broker client to the request context.
func Broker(cli *cli.Context) gin.HandlerFunc {
secret := cli.String("agent-secret")
if secret == "" {
logrus.Fatalf("fatal error. please provide the DRONE_SECRET")
}
// setup broker logging.
log := redlog.New(os.Stderr)
log.SetLevel(2)
logger.SetLogger(log)
if cli.Bool("broker-debug") {
log.SetLevel(1)
}
broker := server.NewServer(
server.WithCredentials("x-token", secret),
)
client := broker.Client()
var once sync.Once
return func(c *gin.Context) {
c.Set(serverKey, broker)
c.Set(clientKey, client)
once.Do(func() {
// this is some really hacky stuff
// turns out I need to do some refactoring
// don't judge!
// will fix in 0.6 release
ctx := c.Copy()
client.Connect(
stomp.WithCredentials("x-token", secret),
)
client.Subscribe("/queue/updates", stomp.HandlerFunc(func(m *stomp.Message) {
go handlers.HandleUpdate(ctx, m.Copy())
}))
})
}
}

2
router/middleware/cache.go
View file

@ -3,8 +3,8 @@ package middleware
import (
"github.com/drone/drone/cache"
"github.com/codegangsta/cli"
"github.com/gin-gonic/gin"
"github.com/urfave/cli"
)
// Cache is a middleware function that initializes the Cache and attaches to

2
router/middleware/config.go
View file

@ -3,8 +3,8 @@ package middleware
import (
"github.com/drone/drone/model"
"github.com/codegangsta/cli"
"github.com/gin-gonic/gin"
"github.com/urfave/cli"
)
const configKey = "config"

2
router/middleware/remote.go
View file

@ -4,7 +4,6 @@ import (
"fmt"
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/drone/drone/remote"
"github.com/drone/drone/remote/bitbucket"
"github.com/drone/drone/remote/bitbucketserver"
@ -12,6 +11,7 @@ import (
"github.com/drone/drone/remote/gitlab"
"github.com/drone/drone/remote/gogs"
"github.com/gin-gonic/gin"
"github.com/urfave/cli"
)
// Remote is a middleware function that initializes the Remote and attaches to

2
router/middleware/store.go
View file

@ -1,9 +1,9 @@
package middleware
import (
"github.com/codegangsta/cli"
"github.com/drone/drone/store"
"github.com/drone/drone/store/datastore"
"github.com/urfave/cli"
"github.com/gin-gonic/gin"
)

68
router/router.go
View file

@ -2,7 +2,6 @@ package router
import (
"net/http"
"os"
"github.com/gin-gonic/gin"
@ -41,8 +40,6 @@ func Load(middleware ...gin.HandlerFunc) http.Handler {
e.GET("/logout", server.GetLogout)
e.NoRoute(server.ShowIndex)
// TODO above will Go away with React UI
user := e.Group("/api/user")
{
user.Use(session.MustUser())
@ -121,46 +118,28 @@ func Load(middleware ...gin.HandlerFunc) http.Handler {
badges.GET("/cc.xml", server.GetCC)
}
if os.Getenv("DRONE_CANARY") == "" {
e.POST("/hook", server.PostHook)
e.POST("/api/hook", server.PostHook)
} else {
e.POST("/hook", server.PostHook2)
e.POST("/api/hook", server.PostHook2)
e.POST("/hook", server.PostHook)
e.POST("/api/hook", server.PostHook)
ws := e.Group("/ws")
{
ws.GET("/broker", server.RPCHandler)
ws.GET("/rpc", server.RPCHandler)
ws.GET("/feed", server.EventStream)
ws.GET("/logs/:owner/:name/:build/:number",
session.SetRepo(),
session.SetPerm(),
session.MustPull,
server.LogStream,
)
}
if os.Getenv("DRONE_CANARY") == "" {
ws := e.Group("/ws")
{
ws.GET("/broker", server.Broker)
ws.GET("/feed", server.EventStream)
ws.GET("/logs/:owner/:name/:build/:number",
session.SetRepo(),
session.SetPerm(),
session.MustPull,
server.LogStream,
)
}
} else {
ws := e.Group("/ws")
{
ws.GET("/broker", server.RPCHandler)
ws.GET("/rpc", server.RPCHandler)
ws.GET("/feed", server.EventStream2)
ws.GET("/logs/:owner/:name/:build/:number",
session.SetRepo(),
session.SetPerm(),
session.MustPull,
server.LogStream2,
)
}
info := e.Group("/api/info")
{
info.GET("/queue",
session.MustAdmin(),
server.GetQueueInfo,
)
}
info := e.Group("/api/info")
{
info.GET("/queue",
session.MustAdmin(),
server.GetQueueInfo,
)
}
auth := e.Group("/authorize")
@ -191,12 +170,5 @@ func Load(middleware ...gin.HandlerFunc) http.Handler {
debugger.GET("/pprof/trace", debug.TraceHandler())
}
// bots := e.Group("/bots")
// {
// bots.Use(session.MustUser())
// bots.POST("/slack", Slack)
// bots.POST("/slack/:command", Slack)
// }
return e
}

227
server/build.go
View file

@ -7,7 +7,6 @@ import (
"fmt"
"io"
"net/http"
"os"
"strconv"
"time"
@ -18,13 +17,10 @@ import (
"github.com/drone/drone/remote"
"github.com/drone/drone/shared/httputil"
"github.com/drone/drone/store"
"github.com/drone/drone/yaml"
"github.com/gin-gonic/gin"
"github.com/square/go-jose"
"github.com/drone/drone/model"
"github.com/drone/drone/router/middleware/session"
"github.com/drone/mq/stomp"
)
func GetBuilds(c *gin.Context) {
@ -156,229 +152,10 @@ func DeleteBuild(c *gin.Context) {
job.ExitCode = 137
store.UpdateBuildJob(c, build, job)
if os.Getenv("DRONE_CANARY") == "" {
client := stomp.MustFromContext(c)
client.SendJSON("/topic/cancel", model.Event{
Type: model.Cancelled,
Repo: *repo,
Build: *build,
Job: *job,
}, stomp.WithHeader("job-id", strconv.FormatInt(job.ID, 10)))
} else {
config.queue.Error(context.Background(), fmt.Sprint(job.ID), queue.ErrCancel)
}
config.queue.Error(context.Background(), fmt.Sprint(job.ID), queue.ErrCancel)
c.String(204, "")
}
func PostBuild(c *gin.Context) {
if os.Getenv("DRONE_CANARY") == "true" {
PostBuild2(c)
return
}
remote_ := remote.FromContext(c)
repo := session.Repo(c)
fork := c.DefaultQuery("fork", "false")
num, err := strconv.Atoi(c.Param("number"))
if err != nil {
c.AbortWithError(http.StatusBadRequest, err)
return
}
user, err := store.GetUser(c, repo.UserID)
if err != nil {
log.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
build, err := store.GetBuildNumber(c, repo, num)
if err != nil {
log.Errorf("failure to get build %d. %s", num, err)
c.AbortWithError(404, err)
return
}
// if the remote has a refresh token, the current access token
// may be stale. Therefore, we should refresh prior to dispatching
// the job.
if refresher, ok := remote_.(remote.Refresher); ok {
ok, _ := refresher.Refresh(user)
if ok {
store.UpdateUser(c, user)
}
}
// fetch the .drone.yml file from the database
cfg := ToConfig(c)
raw, err := remote_.File(user, repo, build, cfg.Yaml)
if err != nil {
log.Errorf("failure to get build config for %s. %s", repo.FullName, err)
c.AbortWithError(404, err)
return
}
// Fetch secrets file but don't exit on error as it's optional
sec, err := remote_.File(user, repo, build, cfg.Shasum)
if err != nil {
log.Debugf("cannot find build secrets for %s. %s", repo.FullName, err)
}
netrc, err := remote_.Netrc(user, repo)
if err != nil {
log.Errorf("failure to generate netrc for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
jobs, err := store.GetJobList(c, build)
if err != nil {
log.Errorf("failure to get build %d jobs. %s", build.Number, err)
c.AbortWithError(404, err)
return
}
// must not restart a running build
if build.Status == model.StatusPending || build.Status == model.StatusRunning {
c.String(409, "Cannot re-start a started build")
return
}
// forking the build creates a duplicate of the build
// and then executes. This retains prior build history.
if forkit, _ := strconv.ParseBool(fork); forkit {
build.ID = 0
build.Number = 0
build.Parent = num
for _, job := range jobs {
job.ID = 0
job.NodeID = 0
}
err := store.CreateBuild(c, build, jobs...)
if err != nil {
c.String(500, err.Error())
return
}
event := c.DefaultQuery("event", build.Event)
if event == model.EventPush ||
event == model.EventPull ||
event == model.EventTag ||
event == model.EventDeploy {
build.Event = event
}
build.Deploy = c.DefaultQuery("deploy_to", build.Deploy)
}
// Read query string parameters into buildParams, exclude reserved params
var buildParams = map[string]string{}
for key, val := range c.Request.URL.Query() {
switch key {
case "fork", "event", "deploy_to":
default:
// We only accept string literals, because build parameters will be
// injected as environment variables
buildParams[key] = val[0]
}
}
// todo move this to database tier
// and wrap inside a transaction
build.Status = model.StatusPending
build.Started = 0
build.Finished = 0
build.Enqueued = time.Now().UTC().Unix()
build.Error = ""
for _, job := range jobs {
for k, v := range buildParams {
job.Environment[k] = v
}
job.Error = ""
job.Status = model.StatusPending
job.Started = 0
job.Finished = 0
job.ExitCode = 0
job.NodeID = 0
job.Enqueued = build.Enqueued
store.UpdateJob(c, job)
}
err = store.UpdateBuild(c, build)
if err != nil {
c.AbortWithStatus(500)
return
}
c.JSON(202, build)
// get the previous build so that we can send
// on status change notifications
last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
secs, err := store.GetMergedSecretList(c, repo)
if err != nil {
log.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
}
var signed bool
var verified bool
signature, err := jose.ParseSigned(string(sec))
if err != nil {
log.Debugf("cannot parse .drone.yml.sig file. %s", err)
} else if len(sec) == 0 {
log.Debugf("cannot parse .drone.yml.sig file. empty file")
} else {
signed = true
output, err := signature.Verify([]byte(repo.Hash))
if err != nil {
log.Debugf("cannot verify .drone.yml.sig file. %s", err)
} else if string(output) != string(raw) {
log.Debugf("cannot verify .drone.yml.sig file. no match. %q <> %q", string(output), string(raw))
} else {
verified = true
}
}
log.Debugf(".drone.yml is signed=%v and verified=%v", signed, verified)
client := stomp.MustFromContext(c)
client.SendJSON("/topic/events", model.Event{
Type: model.Enqueued,
Repo: *repo,
Build: *build,
},
stomp.WithHeader("repo", repo.FullName),
stomp.WithHeader("private", strconv.FormatBool(repo.IsPrivate)),
)
for _, job := range jobs {
broker, _ := stomp.FromContext(c)
broker.SendJSON("/queue/pending", &model.Work{
Signed: signed,
Verified: verified,
User: user,
Repo: repo,
Build: build,
BuildLast: last,
Job: job,
Netrc: netrc,
Yaml: string(raw),
Secrets: secs,
System: &model.System{Link: httputil.GetURL(c.Request)},
},
stomp.WithHeader(
"platform",
yaml.ParsePlatformDefault(raw, "linux/amd64"),
),
stomp.WithHeaders(
yaml.ParseLabel(raw),
),
)
}
}
func GetBuildQueue(c *gin.Context) {
out, err := store.GetBuildQueue(c)
if err != nil {
@ -412,7 +189,7 @@ func copyLogs(dest io.Writer, src io.Reader) error {
//
//
func PostBuild2(c *gin.Context) {
func PostBuild(c *gin.Context) {
remote_ := remote.FromContext(c)
repo := session.Repo(c)

436
server/hook.go
View file

@ -1,28 +1,268 @@
package server
import (
"context"
"encoding/json"
"fmt"
"regexp"
"strconv"
"time"
"github.com/gin-gonic/gin"
"github.com/square/go-jose"
log "github.com/Sirupsen/logrus"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/model"
"github.com/drone/drone/remote"
"github.com/drone/drone/shared/httputil"
"github.com/drone/drone/shared/token"
"github.com/drone/drone/store"
"github.com/drone/drone/yaml"
"github.com/drone/mq/stomp"
"github.com/drone/envsubst"
"github.com/cncd/pipeline/pipeline/backend"
"github.com/cncd/pipeline/pipeline/frontend"
"github.com/cncd/pipeline/pipeline/frontend/yaml"
"github.com/cncd/pipeline/pipeline/frontend/yaml/compiler"
"github.com/cncd/pipeline/pipeline/frontend/yaml/linter"
"github.com/cncd/pipeline/pipeline/frontend/yaml/matrix"
"github.com/cncd/pipeline/pipeline/rpc"
"github.com/cncd/pubsub"
"github.com/cncd/queue"
)
//
// CANARY IMPLEMENTATION
//
// This file is a complete disaster because I'm trying to wedge in some
// experimental code. Please pardon our appearance during renovations.
//
var skipRe = regexp.MustCompile(`\[(?i:ci *skip|skip *ci)\]`)
func GetQueueInfo(c *gin.Context) {
c.IndentedJSON(200,
config.queue.Info(c),
)
}
// return the metadata from the cli context.
func metadataFromStruct(repo *model.Repo, build, last *model.Build, job *model.Job, link string) frontend.Metadata {
return frontend.Metadata{
Repo: frontend.Repo{
Name: repo.Name,
Link: repo.Link,
Remote: repo.Clone,
Private: repo.IsPrivate,
},
Curr: frontend.Build{
Number: build.Number,
Created: build.Created,
Started: build.Started,
Finished: build.Finished,
Status: build.Status,
Event: build.Event,
Link: build.Link,
Target: build.Deploy,
Commit: frontend.Commit{
Sha: build.Commit,
Ref: build.Ref,
Refspec: build.Refspec,
Branch: build.Branch,
Message: build.Message,
Author: frontend.Author{
Name: build.Author,
Email: build.Email,
Avatar: build.Avatar,
},
},
},
Prev: frontend.Build{
Number: last.Number,
Created: last.Created,
Started: last.Started,
Finished: last.Finished,
Status: last.Status,
Event: last.Event,
Link: last.Link,
Target: last.Deploy,
Commit: frontend.Commit{
Sha: last.Commit,
Ref: last.Ref,
Refspec: last.Refspec,
Branch: last.Branch,
Message: last.Message,
Author: frontend.Author{
Name: last.Author,
Email: last.Email,
Avatar: last.Avatar,
},
},
},
Job: frontend.Job{
Number: job.Number,
Matrix: job.Environment,
},
Sys: frontend.System{
Name: "drone",
Link: link,
Arch: "linux/amd64",
},
}
}
type builder struct {
Repo *model.Repo
Curr *model.Build
Last *model.Build
Netrc *model.Netrc
Secs []*model.Secret
Link string
Yaml string
}
type buildItem struct {
Job *model.Job
Platform string
Labels map[string]string
Config *backend.Config
}
func (b *builder) Build() ([]*buildItem, error) {
axes, err := matrix.ParseString(b.Yaml)
if err != nil {
return nil, err
}
if len(axes) == 0 {
axes = append(axes, matrix.Axis{})
}
var items []*buildItem
for i, axis := range axes {
job := &model.Job{
BuildID: b.Curr.ID,
Number: i + 1,
Status: model.StatusPending,
Environment: axis,
Enqueued: b.Curr.Created,
}
metadata := metadataFromStruct(b.Repo, b.Curr, b.Last, job, b.Link)
environ := metadata.Environ()
for k, v := range metadata.EnvironDrone() {
environ[k] = v
}
secrets := map[string]string{}
for _, sec := range b.Secs {
if !sec.MatchEvent(b.Curr.Event) {
continue
}
if b.Curr.Verified || sec.SkipVerify {
secrets[sec.Name] = sec.Value
}
}
sub := func(name string) string {
if v, ok := environ[name]; ok {
return v
}
return secrets[name]
}
y := b.Yaml
if s, err := envsubst.Eval(y, sub); err != nil {
y = s
}
parsed, err := yaml.ParseString(y)
if err != nil {
return nil, err
}
metadata.Sys.Arch = parsed.Platform
if metadata.Sys.Arch == "" {
metadata.Sys.Arch = "linux/amd64"
}
lerr := linter.New(
linter.WithTrusted(b.Repo.IsTrusted),
).Lint(parsed)
if lerr != nil {
return nil, err
}
ir := compiler.New(
compiler.WithEnviron(environ),
// TODO ability to customize the escalated plugins
compiler.WithEscalated("plugins/docker", "plugins/gcr", "plugins/ecr"),
compiler.WithLocal(false),
compiler.WithNetrc(b.Netrc.Login, b.Netrc.Password, b.Netrc.Machine),
compiler.WithPrefix(
fmt.Sprintf(
"%d_%d",
job.ID,
time.Now().Unix(),
),
),
compiler.WithEnviron(job.Environment),
compiler.WithProxy(),
// TODO ability to set global volumes for things like certs
compiler.WithVolumes(),
compiler.WithWorkspaceFromURL("/drone", b.Curr.Link),
).Compile(parsed)
for _, sec := range b.Secs {
if !sec.MatchEvent(b.Curr.Event) {
continue
}
if b.Curr.Verified || sec.SkipVerify {
ir.Secrets = append(ir.Secrets, &backend.Secret{
Mask: sec.Conceal,
Name: sec.Name,
Value: sec.Value,
})
}
}
item := &buildItem{
Job: job,
Config: ir,
Labels: parsed.Labels,
Platform: metadata.Sys.Arch,
}
if item.Labels == nil {
item.Labels = map[string]string{}
}
items = append(items, item)
}
return items, nil
}
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
func PostHook(c *gin.Context) {
remote_ := remote.FromContext(c)
tmprepo, build, err := remote_.Hook(c.Request)
if err != nil {
log.Errorf("failure to parse hook. %s", err)
logrus.Errorf("failure to parse hook. %s", err)
c.AbortWithError(400, err)
return
}
@ -31,7 +271,7 @@ func PostHook(c *gin.Context) {
return
}
if tmprepo == nil {
log.Errorf("failure to ascertain repo from hook.")
logrus.Errorf("failure to ascertain repo from hook.")
c.Writer.WriteHeader(400)
return
}
@ -40,14 +280,14 @@ func PostHook(c *gin.Context) {
// wrapped in square brackets appear in the commit message
skipMatch := skipRe.FindString(build.Message)
if len(skipMatch) > 0 {
log.Infof("ignoring hook. %s found in %s", skipMatch, build.Commit)
logrus.Infof("ignoring hook. %s found in %s", skipMatch, build.Commit)
c.Writer.WriteHeader(204)
return
}
repo, err := store.GetRepoOwnerName(c, tmprepo.Owner, tmprepo.Name)
if err != nil {
log.Errorf("failure to find repo %s/%s from hook. %s", tmprepo.Owner, tmprepo.Name, err)
logrus.Errorf("failure to find repo %s/%s from hook. %s", tmprepo.Owner, tmprepo.Name, err)
c.AbortWithError(404, err)
return
}
@ -57,18 +297,18 @@ func PostHook(c *gin.Context) {
return repo.Hash, nil
})
if err != nil {
log.Errorf("failure to parse token from hook for %s. %s", repo.FullName, err)
logrus.Errorf("failure to parse token from hook for %s. %s", repo.FullName, err)
c.AbortWithError(400, err)
return
}
if parsed.Text != repo.FullName {
log.Errorf("failure to verify token from hook. Expected %s, got %s", repo.FullName, parsed.Text)
logrus.Errorf("failure to verify token from hook. Expected %s, got %s", repo.FullName, parsed.Text)
c.AbortWithStatus(403)
return
}
if repo.UserID == 0 {
log.Warnf("ignoring hook. repo %s has no owner.", repo.FullName)
logrus.Warnf("ignoring hook. repo %s has no owner.", repo.FullName)
c.Writer.WriteHeader(204)
return
}
@ -81,33 +321,18 @@ func PostHook(c *gin.Context) {
}
if skipped {
log.Infof("ignoring hook. repo %s is disabled for %s events.", repo.FullName, build.Event)
logrus.Infof("ignoring hook. repo %s is disabled for %s events.", repo.FullName, build.Event)
c.Writer.WriteHeader(204)
return
}
user, err := store.GetUser(c, repo.UserID)
if err != nil {
log.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
logrus.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
// if there is no email address associated with the pull request,
// we lookup the email address based on the authors github login.
//
// my initial hesitation with this code is that it has the ability
// to expose your email address. At the same time, your email address
// is already exposed in the public .git log. So while some people will
// a small number of people will probably be upset by this, I'm not sure
// it is actually that big of a deal.
if len(build.Email) == 0 {
author, uerr := store.GetUserLogin(c, build.Author)
if uerr == nil {
build.Email = author.Email
}
}
// if the remote has a refresh token, the current access token
// may be stale. Therefore, we should refresh prior to dispatching
// the job.
@ -119,26 +344,16 @@ func PostHook(c *gin.Context) {
}
// fetch the build file from the database
config := ToConfig(c)
raw, err := remote_.File(user, repo, build, config.Yaml)
cfg := ToConfig(c)
raw, err := remote_.File(user, repo, build, cfg.Yaml)
if err != nil {
log.Errorf("failure to get build config for %s. %s", repo.FullName, err)
logrus.Errorf("failure to get build config for %s. %s", repo.FullName, err)
c.AbortWithError(404, err)
return
}
sec, err := remote_.File(user, repo, build, config.Shasum)
sec, err := remote_.File(user, repo, build, cfg.Shasum)
if err != nil {
log.Debugf("cannot find build secrets for %s. %s", repo.FullName, err)
// NOTE we don't exit on failure. The sec file is optional
}
axes, err := yaml.ParseMatrix(raw)
if err != nil {
c.String(500, "Failed to parse yaml file or calculate matrix. %s", err)
return
}
if len(axes) == 0 {
axes = append(axes, yaml.Axis{})
logrus.Debugf("cannot find yaml signature for %s. %s", repo.FullName, err)
}
netrc, err := remote_.Netrc(user, repo)
@ -148,24 +363,28 @@ func PostHook(c *gin.Context) {
}
// verify the branches can be built vs skipped
branches := yaml.ParseBranch(raw)
if !branches.Match(build.Branch) && build.Event != model.EventTag && build.Event != model.EventDeploy {
branches, err := yaml.ParseBytes(raw)
if err != nil {
c.String(500, "Failed to parse yaml file. %s", err)
return
}
if !branches.Branches.Match(build.Branch) && build.Event != model.EventTag && build.Event != model.EventDeploy {
c.String(200, "Branch does not match restrictions defined in yaml")
return
}
signature, err := jose.ParseSigned(string(sec))
if err != nil {
log.Debugf("cannot parse .drone.yml.sig file. %s", err)
logrus.Debugf("cannot parse .drone.yml.sig file. %s", err)
} else if len(sec) == 0 {
log.Debugf("cannot parse .drone.yml.sig file. empty file")
logrus.Debugf("cannot parse .drone.yml.sig file. empty file")
} else {
build.Signed = true
output, verr := signature.Verify([]byte(repo.Hash))
if verr != nil {
log.Debugf("cannot verify .drone.yml.sig file. %s", verr)
logrus.Debugf("cannot verify .drone.yml.sig file. %s", verr)
} else if string(output) != string(raw) {
log.Debugf("cannot verify .drone.yml.sig file. no match")
logrus.Debugf("cannot verify .drone.yml.sig file. no match")
} else {
build.Verified = true
}
@ -175,71 +394,94 @@ func PostHook(c *gin.Context) {
build.Status = model.StatusPending
build.RepoID = repo.ID
// and use a transaction
var jobs []*model.Job
for num, axis := range axes {
jobs = append(jobs, &model.Job{
BuildID: build.ID,
Number: num + 1,
Status: model.StatusPending,
Environment: axis,
})
}
err = store.CreateBuild(c, build, jobs...)
if err != nil {
log.Errorf("failure to save commit for %s. %s", repo.FullName, err)
if err := store.CreateBuild(c, build, build.Jobs...); err != nil {
logrus.Errorf("failure to save commit for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
c.JSON(200, build)
url := fmt.Sprintf("%s/%s/%d", httputil.GetURL(c.Request), repo.FullName, build.Number)
err = remote_.Status(user, repo, build, url)
if err != nil {
log.Errorf("error setting commit status for %s/%d", repo.FullName, build.Number)
}
// get the previous build so that we can send
// on status change notifications
last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
secs, err := store.GetMergedSecretList(c, repo)
if err != nil {
log.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
logrus.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
}
client := stomp.MustFromContext(c)
client.SendJSON("topic/events", model.Event{
//
// BELOW: NEW
//
defer func() {
uri := fmt.Sprintf("%s/%s/%d", httputil.GetURL(c.Request), repo.FullName, build.Number)
err = remote_.Status(user, repo, build, uri)
if err != nil {
logrus.Errorf("error setting commit status for %s/%d", repo.FullName, build.Number)
}
}()
b := builder{
Repo: repo,
Curr: build,
Last: last,
Netrc: netrc,
Secs: secs,
Link: httputil.GetURL(c.Request),
Yaml: string(raw),
}
items, err := b.Build()
if err != nil {
build.Status = model.StatusError
build.Started = time.Now().Unix()
build.Finished = build.Started
build.Error = err.Error()
return
}
for _, item := range items {
build.Jobs = append(build.Jobs, item.Job)
store.CreateJob(c, item.Job)
// TODO err
}
//
// publish topic
//
message := pubsub.Message{
Labels: map[string]string{
"repo": repo.FullName,
"private": strconv.FormatBool(repo.IsPrivate),
},
}
message.Data, _ = json.Marshal(model.Event{
Type: model.Enqueued,
Repo: *repo,
Build: *build,
},
stomp.WithHeader("repo", repo.FullName),
stomp.WithHeader("private", strconv.FormatBool(repo.IsPrivate)),
)
})
// TODO remove global reference
config.pubsub.Publish(c, "topic/events", message)
//
// end publish topic
//
for _, job := range jobs {
broker, _ := stomp.FromContext(c)
broker.SendJSON("/queue/pending", &model.Work{
Signed: build.Signed,
Verified: build.Verified,
User: user,
Repo: repo,
Build: build,
BuildLast: last,
Job: job,
Netrc: netrc,
Yaml: string(raw),
Secrets: secs,
System: &model.System{Link: httputil.GetURL(c.Request)},
},
stomp.WithHeader(
"platform",
yaml.ParsePlatformDefault(raw, "linux/amd64"),
),
stomp.WithHeaders(
yaml.ParseLabel(raw),
),
)
for _, item := range items {
task := new(queue.Task)
task.ID = fmt.Sprint(item.Job.ID)
task.Labels = map[string]string{}
task.Labels["platform"] = item.Platform
for k, v := range item.Labels {
task.Labels[k] = v
}
task.Data, _ = json.Marshal(rpc.Pipeline{
ID: fmt.Sprint(item.Job.ID),
Config: item.Config,
Timeout: b.Repo.Timeout,
})
config.logger.Open(context.Background(), task.ID)
config.queue.Push(context.Background(), task)
}
}

869
server/hook2.go
View file

@ -1,869 +0,0 @@
package server
import (
"context"
"encoding/json"
"fmt"
"regexp"
"strconv"
"time"
"github.com/gin-gonic/gin"
"github.com/square/go-jose"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/model"
"github.com/drone/drone/remote"
"github.com/drone/drone/shared/httputil"
"github.com/drone/drone/shared/token"
"github.com/drone/drone/store"
"github.com/drone/envsubst"
"github.com/cncd/pipeline/pipeline/backend"
"github.com/cncd/pipeline/pipeline/frontend"
"github.com/cncd/pipeline/pipeline/frontend/yaml"
"github.com/cncd/pipeline/pipeline/frontend/yaml/compiler"
"github.com/cncd/pipeline/pipeline/frontend/yaml/linter"
"github.com/cncd/pipeline/pipeline/frontend/yaml/matrix"
"github.com/cncd/pipeline/pipeline/rpc"
"github.com/cncd/pubsub"
"github.com/cncd/queue"
)
//
// CANARY IMPLEMENTATION
//
// This file is a complete disaster because I'm trying to wedge in some
// experimental code. Please pardon our appearance during renovations.
//
var skipRe = regexp.MustCompile(`\[(?i:ci *skip|skip *ci)\]`)
func GetQueueInfo(c *gin.Context) {
c.IndentedJSON(200,
config.queue.Info(c),
)
}
// func PostHookOld(c *gin.Context) {
// remote_ := remote.FromContext(c)
//
// tmprepo, build, err := remote_.Hook(c.Request)
// if err != nil {
// logrus.Errorf("failure to parse hook. %s", err)
// c.AbortWithError(400, err)
// return
// }
// if build == nil {
// c.Writer.WriteHeader(200)
// return
// }
// if tmprepo == nil {
// logrus.Errorf("failure to ascertain repo from hook.")
// c.Writer.WriteHeader(400)
// return
// }
//
// // skip the build if any case-insensitive combination of the words "skip" and "ci"
// // wrapped in square brackets appear in the commit message
// skipMatch := skipRe.FindString(build.Message)
// if len(skipMatch) > 0 {
// logrus.Infof("ignoring hook. %s found in %s", skipMatch, build.Commit)
// c.Writer.WriteHeader(204)
// return
// }
//
// repo, err := store.GetRepoOwnerName(c, tmprepo.Owner, tmprepo.Name)
// if err != nil {
// logrus.Errorf("failure to find repo %s/%s from hook. %s", tmprepo.Owner, tmprepo.Name, err)
// c.AbortWithError(404, err)
// return
// }
//
// // get the token and verify the hook is authorized
// parsed, err := token.ParseRequest(c.Request, func(t *token.Token) (string, error) {
// return repo.Hash, nil
// })
// if err != nil {
// logrus.Errorf("failure to parse token from hook for %s. %s", repo.FullName, err)
// c.AbortWithError(400, err)
// return
// }
// if parsed.Text != repo.FullName {
// logrus.Errorf("failure to verify token from hook. Expected %s, got %s", repo.FullName, parsed.Text)
// c.AbortWithStatus(403)
// return
// }
//
// if repo.UserID == 0 {
// logrus.Warnf("ignoring hook. repo %s has no owner.", repo.FullName)
// c.Writer.WriteHeader(204)
// return
// }
// var skipped = true
// if (build.Event == model.EventPush && repo.AllowPush) ||
// (build.Event == model.EventPull && repo.AllowPull) ||
// (build.Event == model.EventDeploy && repo.AllowDeploy) ||
// (build.Event == model.EventTag && repo.AllowTag) {
// skipped = false
// }
//
// if skipped {
// logrus.Infof("ignoring hook. repo %s is disabled for %s events.", repo.FullName, build.Event)
// c.Writer.WriteHeader(204)
// return
// }
//
// user, err := store.GetUser(c, repo.UserID)
// if err != nil {
// logrus.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
// c.AbortWithError(500, err)
// return
// }
//
// // if the remote has a refresh token, the current access token
// // may be stale. Therefore, we should refresh prior to dispatching
// // the job.
// if refresher, ok := remote_.(remote.Refresher); ok {
// ok, _ := refresher.Refresh(user)
// if ok {
// store.UpdateUser(c, user)
// }
// }
//
// // fetch the build file from the database
// cfg := ToConfig(c)
// raw, err := remote_.File(user, repo, build, cfg.Yaml)
// if err != nil {
// logrus.Errorf("failure to get build config for %s. %s", repo.FullName, err)
// c.AbortWithError(404, err)
// return
// }
// sec, err := remote_.File(user, repo, build, cfg.Shasum)
// if err != nil {
// logrus.Debugf("cannot find yaml signature for %s. %s", repo.FullName, err)
// // NOTE we don't exit on failure. The sec file is optional
// }
//
// axes, err := matrix.Parse(raw)
// if err != nil {
// c.String(500, "Failed to parse yaml file or calculate matrix. %s", err)
// return
// }
// if len(axes) == 0 {
// axes = append(axes, matrix.Axis{})
// }
//
// netrc, err := remote_.Netrc(user, repo)
// if err != nil {
// c.String(500, "Failed to generate netrc file. %s", err)
// return
// }
//
// // verify the branches can be built vs skipped
// branches, err := yaml.ParseBytes(raw)
// if err != nil {
// c.String(500, "Failed to parse yaml file. %s", err)
// return
// }
// if !branches.Branches.Match(build.Branch) && build.Event != model.EventTag && build.Event != model.EventDeploy {
// c.String(200, "Branch does not match restrictions defined in yaml")
// return
// }
//
// signature, err := jose.ParseSigned(string(sec))
// if err != nil {
// logrus.Debugf("cannot parse .drone.yml.sig file. %s", err)
// } else if len(sec) == 0 {
// logrus.Debugf("cannot parse .drone.yml.sig file. empty file")
// } else {
// build.Signed = true
// output, verr := signature.Verify([]byte(repo.Hash))
// if verr != nil {
// logrus.Debugf("cannot verify .drone.yml.sig file. %s", verr)
// } else if string(output) != string(raw) {
// logrus.Debugf("cannot verify .drone.yml.sig file. no match")
// } else {
// build.Verified = true
// }
// }
//
// // update some build fields
// build.Status = model.StatusPending
// build.RepoID = repo.ID
//
// // and use a transaction
// var jobs []*model.Job
// for num, axis := range axes {
// jobs = append(jobs, &model.Job{
// BuildID: build.ID,
// Number: num + 1,
// Status: model.StatusPending,
// Environment: axis,
// })
// }
// err = store.CreateBuild(c, build, jobs...)
// if err != nil {
// logrus.Errorf("failure to save commit for %s. %s", repo.FullName, err)
// c.AbortWithError(500, err)
// return
// }
//
// c.JSON(200, build)
//
// uri := fmt.Sprintf("%s/%s/%d", httputil.GetURL(c.Request), repo.FullName, build.Number)
// err = remote_.Status(user, repo, build, uri)
// if err != nil {
// logrus.Errorf("error setting commit status for %s/%d", repo.FullName, build.Number)
// }
//
// // get the previous build so that we can send
// // on status change notifications
// last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
// secs, err := store.GetMergedSecretList(c, repo)
// if err != nil {
// logrus.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
// }
//
// //
// // BELOW: NEW
// //
//
// b := builder{
// Repo: repo,
// Curr: build,
// Last: last,
// Netrc: netrc,
// Secs: secs,
// Link: httputil.GetURL(c.Request),
// Yaml: string(raw),
// }
// items, err := b.Build()
// if err != nil {
// build.Status = model.StatusError
// build.Started = time.Now().Unix()
// build.Finished = build.Started
// build.Error = err.Error()
// store.CreateBuild(c, build, build.Jobs...)
// return
// }
//
// for _, item := range items {
// build.Jobs = append(build.Jobs, item.Job)
// }
//
// if err := store.CreateBuild(c, build, build.Jobs...); err != nil {
// logrus.Errorf("failure to save commit for %s. %s", repo.FullName, err)
// c.AbortWithError(500, err)
// return
// }
//
// for _, item := range items {
//
// task := new(queue.Task)
// task.ID = fmt.Sprint(item.Job.ID)
// task.Labels = map[string]string{}
// task.Labels["platform"] = item.Platform
// for k, v := range item.Labels {
// task.Labels[k] = v
// }
//
// task.Data, _ = json.Marshal(rpc.Pipeline{
// ID: fmt.Sprint(item.Job.ID),
// Config: item.Config,
// Timeout: b.Repo.Timeout,
// })
//
// config.logger.Open(context.Background(), task.ID)
// config.queue.Push(context.Background(), task)
// }
//
// //
// // new code here
// //
//
// message := pubsub.Message{
// Labels: map[string]string{
// "repo": repo.FullName,
// "private": strconv.FormatBool(repo.IsPrivate),
// },
// }
// message.Data, _ = json.Marshal(model.Event{
// Type: model.Enqueued,
// Repo: *repo,
// Build: *build,
// })
// // TODO remove global reference
// config.pubsub.Publish(c, "topic/events", message)
//
// //
// // workspace
// //
//
// for _, job := range jobs {
//
// metadata := metadataFromStruct(repo, build, last, job, httputil.GetURL(c.Request))
// environ := metadata.Environ()
//
// secrets := map[string]string{}
// for _, sec := range secs {
// if !sec.MatchEvent(build.Event) {
// continue
// }
// if build.Verified || sec.SkipVerify {
// secrets[sec.Name] = sec.Value
// }
// }
// sub := func(name string) string {
// if v, ok := environ[name]; ok {
// return v
// }
// return secrets[name]
// }
// if s, err := envsubst.Eval(string(raw), sub); err != nil {
// raw = []byte(s)
// }
// parsed, err := yaml.ParseBytes(raw)
// if err != nil {
// job.ExitCode = 255
// job.Enqueued = time.Now().Unix()
// job.Started = time.Now().Unix()
// job.Finished = time.Now().Unix()
// job.Error = err.Error()
// store.UpdateBuildJob(c, build, job)
// continue
// }
//
// lerr := linter.New(
// linter.WithTrusted(repo.IsTrusted),
// ).Lint(parsed)
// if lerr != nil {
// job.ExitCode = 255
// job.Enqueued = time.Now().Unix()
// job.Started = time.Now().Unix()
// job.Finished = time.Now().Unix()
// job.Error = lerr.Error()
// store.UpdateBuildJob(c, build, job)
// continue
// }
//
// ir := compiler.New(
// compiler.WithEnviron(environ),
// // TODO ability to customize the escalated plugins
// compiler.WithEscalated("plugins/docker", "plugins/gcr", "plugins/ecr"),
// compiler.WithLocal(false),
// compiler.WithNetrc(netrc.Login, netrc.Password, netrc.Machine),
// compiler.WithPrefix(
// fmt.Sprintf(
// "%d_%d",
// job.ID,
// time.Now().Unix(),
// ),
// ),
// compiler.WithEnviron(job.Environment),
// compiler.WithProxy(),
// // TODO ability to set global volumes for things like certs
// compiler.WithVolumes(),
// compiler.WithWorkspaceFromURL("/drone", repo.Link),
// ).Compile(parsed)
//
// // TODO there is a chicken and egg problem here because
// // the compiled yaml has a platform environment variable
// // that is not correctly set, because we are just about
// // to set it ....
// // TODO maybe we remove platform from metadata and let
// // the compiler set the value from the yaml itself.
// if parsed.Platform == "" {
// parsed.Platform = "linux/amd64"
// }
//
// for _, sec := range secs {
// if !sec.MatchEvent(build.Event) {
// continue
// }
// if build.Verified || sec.SkipVerify {
// ir.Secrets = append(ir.Secrets, &backend.Secret{
// Mask: sec.Conceal,
// Name: sec.Name,
// Value: sec.Value,
// })
// }
// }
//
// task := new(queue.Task)
// task.ID = fmt.Sprint(job.ID)
// task.Labels = map[string]string{}
// task.Labels["platform"] = parsed.Platform
// if parsed.Labels != nil {
// for k, v := range parsed.Labels {
// task.Labels[k] = v
// }
// }
//
// task.Data, _ = json.Marshal(rpc.Pipeline{
// ID: fmt.Sprint(job.ID),
// Config: ir,
// Timeout: repo.Timeout,
// })
//
// config.logger.Open(context.Background(), task.ID)
// config.queue.Push(context.Background(), task)
// }
//
// }
// return the metadata from the cli context.
func metadataFromStruct(repo *model.Repo, build, last *model.Build, job *model.Job, link string) frontend.Metadata {
return frontend.Metadata{
Repo: frontend.Repo{
Name: repo.Name,
Link: repo.Link,
Remote: repo.Clone,
Private: repo.IsPrivate,
},
Curr: frontend.Build{
Number: build.Number,
Created: build.Created,
Started: build.Started,
Finished: build.Finished,
Status: build.Status,
Event: build.Event,
Link: build.Link,
Target: build.Deploy,
Commit: frontend.Commit{
Sha: build.Commit,
Ref: build.Ref,
Refspec: build.Refspec,
Branch: build.Branch,
Message: build.Message,
Author: frontend.Author{
Name: build.Author,
Email: build.Email,
Avatar: build.Avatar,
},
},
},
Prev: frontend.Build{
Number: last.Number,
Created: last.Created,
Started: last.Started,
Finished: last.Finished,
Status: last.Status,
Event: last.Event,
Link: last.Link,
Target: last.Deploy,
Commit: frontend.Commit{
Sha: last.Commit,
Ref: last.Ref,
Refspec: last.Refspec,
Branch: last.Branch,
Message: last.Message,
Author: frontend.Author{
Name: last.Author,
Email: last.Email,
Avatar: last.Avatar,
},
},
},
Job: frontend.Job{
Number: job.Number,
Matrix: job.Environment,
},
Sys: frontend.System{
Name: "drone",
Link: link,
Arch: "linux/amd64",
},
}
}
// use helper funciton to return ([]backend.Config, error)
// 1. fetch everything from github
// 2. create and persist the build object
//
// 3. generate the build jobs [Launcher?]
// a. parse yaml
// b. lint yaml
// c. compile yaml
//
// 4. persist the build jobs (... what if I already have jobs, via re-start)
// 5. update github status
// 6. send to queue
// 7. trigger pubsub
type builder struct {
Repo *model.Repo
Curr *model.Build
Last *model.Build
Netrc *model.Netrc
Secs []*model.Secret
Link string
Yaml string
}
type buildItem struct {
Job *model.Job
Platform string
Labels map[string]string
Config *backend.Config
}
func (b *builder) Build() ([]*buildItem, error) {
axes, err := matrix.ParseString(b.Yaml)
if err != nil {
return nil, err
}
if len(axes) == 0 {
axes = append(axes, matrix.Axis{})
}
var items []*buildItem
for i, axis := range axes {
job := &model.Job{
BuildID: b.Curr.ID,
Number: i + 1,
Status: model.StatusPending,
Environment: axis,
Enqueued: b.Curr.Created,
}
metadata := metadataFromStruct(b.Repo, b.Curr, b.Last, job, b.Link)
environ := metadata.Environ()
for k, v := range metadata.EnvironDrone() {
environ[k] = v
}
secrets := map[string]string{}
for _, sec := range b.Secs {
if !sec.MatchEvent(b.Curr.Event) {
continue
}
if b.Curr.Verified || sec.SkipVerify {
secrets[sec.Name] = sec.Value
}
}
sub := func(name string) string {
if v, ok := environ[name]; ok {
return v
}
return secrets[name]
}
y := b.Yaml
if s, err := envsubst.Eval(y, sub); err != nil {
y = s
}
parsed, err := yaml.ParseString(y)
if err != nil {
return nil, err
}
metadata.Sys.Arch = parsed.Platform
if metadata.Sys.Arch == "" {
metadata.Sys.Arch = "linux/amd64"
}
lerr := linter.New(
linter.WithTrusted(b.Repo.IsTrusted),
).Lint(parsed)
if lerr != nil {
return nil, err
}
ir := compiler.New(
compiler.WithEnviron(environ),
// TODO ability to customize the escalated plugins
compiler.WithEscalated("plugins/docker", "plugins/gcr", "plugins/ecr"),
compiler.WithLocal(false),
compiler.WithNetrc(b.Netrc.Login, b.Netrc.Password, b.Netrc.Machine),
compiler.WithPrefix(
fmt.Sprintf(
"%d_%d",
job.ID,
time.Now().Unix(),
),
),
compiler.WithEnviron(job.Environment),
compiler.WithProxy(),
// TODO ability to set global volumes for things like certs
compiler.WithVolumes(),
compiler.WithWorkspaceFromURL("/drone", b.Curr.Link),
).Compile(parsed)
for _, sec := range b.Secs {
if !sec.MatchEvent(b.Curr.Event) {
continue
}
if b.Curr.Verified || sec.SkipVerify {
ir.Secrets = append(ir.Secrets, &backend.Secret{
Mask: sec.Conceal,
Name: sec.Name,
Value: sec.Value,
})
}
}
item := &buildItem{
Job: job,
Config: ir,
Labels: parsed.Labels,
Platform: metadata.Sys.Arch,
}
if item.Labels == nil {
item.Labels = map[string]string{}
}
items = append(items, item)
}
return items, nil
}
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
func PostHook2(c *gin.Context) {
remote_ := remote.FromContext(c)
tmprepo, build, err := remote_.Hook(c.Request)
if err != nil {
logrus.Errorf("failure to parse hook. %s", err)
c.AbortWithError(400, err)
return
}
if build == nil {
c.Writer.WriteHeader(200)
return
}
if tmprepo == nil {
logrus.Errorf("failure to ascertain repo from hook.")
c.Writer.WriteHeader(400)
return
}
// skip the build if any case-insensitive combination of the words "skip" and "ci"
// wrapped in square brackets appear in the commit message
skipMatch := skipRe.FindString(build.Message)
if len(skipMatch) > 0 {
logrus.Infof("ignoring hook. %s found in %s", skipMatch, build.Commit)
c.Writer.WriteHeader(204)
return
}
repo, err := store.GetRepoOwnerName(c, tmprepo.Owner, tmprepo.Name)
if err != nil {
logrus.Errorf("failure to find repo %s/%s from hook. %s", tmprepo.Owner, tmprepo.Name, err)
c.AbortWithError(404, err)
return
}
// get the token and verify the hook is authorized
parsed, err := token.ParseRequest(c.Request, func(t *token.Token) (string, error) {
return repo.Hash, nil
})
if err != nil {
logrus.Errorf("failure to parse token from hook for %s. %s", repo.FullName, err)
c.AbortWithError(400, err)
return
}
if parsed.Text != repo.FullName {
logrus.Errorf("failure to verify token from hook. Expected %s, got %s", repo.FullName, parsed.Text)
c.AbortWithStatus(403)
return
}
if repo.UserID == 0 {
logrus.Warnf("ignoring hook. repo %s has no owner.", repo.FullName)
c.Writer.WriteHeader(204)
return
}
var skipped = true
if (build.Event == model.EventPush && repo.AllowPush) ||
(build.Event == model.EventPull && repo.AllowPull) ||
(build.Event == model.EventDeploy && repo.AllowDeploy) ||
(build.Event == model.EventTag && repo.AllowTag) {
skipped = false
}
if skipped {
logrus.Infof("ignoring hook. repo %s is disabled for %s events.", repo.FullName, build.Event)
c.Writer.WriteHeader(204)
return
}
user, err := store.GetUser(c, repo.UserID)
if err != nil {
logrus.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
// if the remote has a refresh token, the current access token
// may be stale. Therefore, we should refresh prior to dispatching
// the job.
if refresher, ok := remote_.(remote.Refresher); ok {
ok, _ := refresher.Refresh(user)
if ok {
store.UpdateUser(c, user)
}
}
// fetch the build file from the database
cfg := ToConfig(c)
raw, err := remote_.File(user, repo, build, cfg.Yaml)
if err != nil {
logrus.Errorf("failure to get build config for %s. %s", repo.FullName, err)
c.AbortWithError(404, err)
return
}
sec, err := remote_.File(user, repo, build, cfg.Shasum)
if err != nil {
logrus.Debugf("cannot find yaml signature for %s. %s", repo.FullName, err)
}
netrc, err := remote_.Netrc(user, repo)
if err != nil {
c.String(500, "Failed to generate netrc file. %s", err)
return
}
// verify the branches can be built vs skipped
branches, err := yaml.ParseBytes(raw)
if err != nil {
c.String(500, "Failed to parse yaml file. %s", err)
return
}
if !branches.Branches.Match(build.Branch) && build.Event != model.EventTag && build.Event != model.EventDeploy {
c.String(200, "Branch does not match restrictions defined in yaml")
return
}
signature, err := jose.ParseSigned(string(sec))
if err != nil {
logrus.Debugf("cannot parse .drone.yml.sig file. %s", err)
} else if len(sec) == 0 {
logrus.Debugf("cannot parse .drone.yml.sig file. empty file")
} else {
build.Signed = true
output, verr := signature.Verify([]byte(repo.Hash))
if verr != nil {
logrus.Debugf("cannot verify .drone.yml.sig file. %s", verr)
} else if string(output) != string(raw) {
logrus.Debugf("cannot verify .drone.yml.sig file. no match")
} else {
build.Verified = true
}
}
// update some build fields
build.Status = model.StatusPending
build.RepoID = repo.ID
if err := store.CreateBuild(c, build, build.Jobs...); err != nil {
logrus.Errorf("failure to save commit for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
c.JSON(200, build)
// get the previous build so that we can send
// on status change notifications
last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
secs, err := store.GetMergedSecretList(c, repo)
if err != nil {
logrus.Debugf("Error getting secrets for %s#%d. %s", repo.FullName, build.Number, err)
}
//
// BELOW: NEW
//
defer func() {
uri := fmt.Sprintf("%s/%s/%d", httputil.GetURL(c.Request), repo.FullName, build.Number)
err = remote_.Status(user, repo, build, uri)
if err != nil {
logrus.Errorf("error setting commit status for %s/%d", repo.FullName, build.Number)
}
}()
b := builder{
Repo: repo,
Curr: build,
Last: last,
Netrc: netrc,
Secs: secs,
Link: httputil.GetURL(c.Request),
Yaml: string(raw),
}
items, err := b.Build()
if err != nil {
build.Status = model.StatusError
build.Started = time.Now().Unix()
build.Finished = build.Started
build.Error = err.Error()
return
}
for _, item := range items {
build.Jobs = append(build.Jobs, item.Job)
store.CreateJob(c, item.Job)
// TODO err
}
//
// publish topic
//
message := pubsub.Message{
Labels: map[string]string{
"repo": repo.FullName,
"private": strconv.FormatBool(repo.IsPrivate),
},
}
message.Data, _ = json.Marshal(model.Event{
Type: model.Enqueued,
Repo: *repo,
Build: *build,
})
// TODO remove global reference
config.pubsub.Publish(c, "topic/events", message)
//
// end publish topic
//
for _, item := range items {
task := new(queue.Task)
task.ID = fmt.Sprint(item.Job.ID)
task.Labels = map[string]string{}
task.Labels["platform"] = item.Platform
for k, v := range item.Labels {
task.Labels[k] = v
}
task.Data, _ = json.Marshal(rpc.Pipeline{
ID: fmt.Sprint(item.Job.ID),
Config: item.Config,
Timeout: b.Repo.Timeout,
})
config.logger.Open(context.Background(), task.ID)
config.queue.Push(context.Background(), task)
}
}

163
server/queue.go
View file

@ -1,163 +0,0 @@
package server
import (
"bytes"
"fmt"
"net/http"
"strconv"
"time"
"golang.org/x/net/context"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/model"
"github.com/drone/drone/remote"
"github.com/drone/drone/store"
"github.com/drone/mq/stomp"
"github.com/gorilla/websocket"
)
// newline defines a newline constant to separate lines in the build output
var newline = []byte{'\n'}
// upgrader defines the default behavior for upgrading the websocket.
var upgrader = websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool {
return true
},
}
// HandleUpdate handles build updates from the agent and persists to the database.
func HandleUpdate(c context.Context, message *stomp.Message) {
defer func() {
message.Release()
if r := recover(); r != nil {
err := r.(error)
logrus.Errorf("Panic recover: broker update handler: %s", err)
}
}()
work := new(model.Work)
if err := message.Unmarshal(work); err != nil {
logrus.Errorf("Invalid input. %s", err)
return
}
// TODO(bradrydzewski) it is really annoying that we have to do this lookup
// and I'd prefer not to. The reason we do this is because the Build and Job
// have fields that aren't serialized to json and would be reset to their
// empty values if we just saved what was coming in the http.Request body.
build, err := store.GetBuild(c, work.Build.ID)
if err != nil {
logrus.Errorf("Unable to find build. %s", err)
return
}
job, err := store.GetJob(c, work.Job.ID)
if err != nil {
logrus.Errorf("Unable to find job. %s", err)
return
}
build.Started = work.Build.Started
build.Finished = work.Build.Finished
build.Status = work.Build.Status
job.Started = work.Job.Started
job.Finished = work.Job.Finished
job.Status = work.Job.Status
job.ExitCode = work.Job.ExitCode
job.Error = work.Job.Error
if build.Status == model.StatusPending {
build.Started = work.Job.Started
build.Status = model.StatusRunning
store.UpdateBuild(c, build)
}
// if job.Status == model.StatusRunning {
// err := stream.Create(c, stream.ToKey(job.ID))
// if err != nil {
// logrus.Errorf("Unable to create stream. %s", err)
// }
// }
ok, err := store.UpdateBuildJob(c, build, job)
if err != nil {
logrus.Errorf("Unable to update job. %s", err)
return
}
if ok {
// get the user because we transfer the user form the server to agent
// and back we lose the token which does not get serialized to json.
user, uerr := store.GetUser(c, work.User.ID)
if uerr != nil {
logrus.Errorf("Unable to find user. %s", err)
return
}
remote.Status(c, user, work.Repo, build,
fmt.Sprintf("%s/%s/%d", work.System.Link, work.Repo.FullName, work.Build.Number))
}
client := stomp.MustFromContext(c)
err = client.SendJSON("/topic/events", model.Event{
Type: func() model.EventType {
// HACK we don't even really care about the event type.
// so we should just simplify how events are triggered.
if job.Status == model.StatusRunning {
return model.Started
}
return model.Finished
}(),
Repo: *work.Repo,
Build: *build,
Job: *job,
},
stomp.WithHeader("repo", work.Repo.FullName),
stomp.WithHeader("private", strconv.FormatBool(work.Repo.IsPrivate)),
)
if err != nil {
logrus.Errorf("Unable to publish to /topic/events. %s", err)
}
if job.Status == model.StatusRunning {
return
}
var buf bytes.Buffer
var sub []byte
done := make(chan bool)
dest := fmt.Sprintf("/topic/logs.%d", job.ID)
sub, err = client.Subscribe(dest, stomp.HandlerFunc(func(m *stomp.Message) {
defer m.Release()
if m.Header.GetBool("eof") {
done <- true
return
}
buf.Write(m.Body)
buf.WriteByte('\n')
}))
if err != nil {
logrus.Errorf("Unable to read logs from broker. %s", err)
return
}
defer func() {
client.Send(dest, []byte{}, stomp.WithRetain("remove"))
client.Unsubscribe(sub)
}()
select {
case <-done:
case <-time.After(30 * time.Second):
logrus.Errorf("Unable to read logs from broker. Timeout. %s", err)
return
}
if err := store.WriteLog(c, job, &buf); err != nil {
logrus.Errorf("Unable to write logs to store. %s", err)
return
}
}

174
server/stream.go
View file

@ -3,6 +3,7 @@ package server
import (
"context"
"fmt"
"net/http"
"strconv"
"time"
@ -12,7 +13,6 @@ import (
"github.com/drone/drone/model"
"github.com/drone/drone/router/middleware/session"
"github.com/drone/drone/store"
"github.com/drone/mq/stomp"
"github.com/Sirupsen/logrus"
"github.com/gin-gonic/gin"
@ -28,160 +28,17 @@ var (
// Send pings to client with this period. Must be less than pongWait.
pingPeriod = 30 * time.Second
// upgrader defines the default behavior for upgrading the websocket.
upgrader = websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool {
return true
},
}
)
// LogStream streams the build log output to the client.
func LogStream(c *gin.Context) {
repo := session.Repo(c)
buildn, _ := strconv.Atoi(c.Param("build"))
jobn, _ := strconv.Atoi(c.Param("number"))
c.Writer.Header().Set("Content-Type", "text/event-stream")
build, err := store.GetBuildNumber(c, repo, buildn)
if err != nil {
logrus.Debugln("stream cannot get build number.", err)
c.AbortWithError(404, err)
return
}
job, err := store.GetJobNumber(c, build, jobn)
if err != nil {
logrus.Debugln("stream cannot get job number.", err)
c.AbortWithError(404, err)
return
}
if job.Status != model.StatusRunning {
logrus.Debugln("stream not found.")
c.AbortWithStatus(404)
return
}
ws, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
if _, ok := err.(websocket.HandshakeError); !ok {
logrus.Errorf("Cannot upgrade websocket. %s", err)
}
return
}
logrus.Debugf("Successfull upgraded websocket")
ticker := time.NewTicker(pingPeriod)
defer ticker.Stop()
logs := make(chan []byte)
done := make(chan bool)
var eof bool
dest := fmt.Sprintf("/topic/logs.%d", job.ID)
client, _ := stomp.FromContext(c)
sub, err := client.Subscribe(dest, stomp.HandlerFunc(func(m *stomp.Message) {
if m.Header.GetBool("eof") {
eof = true
done <- true
} else if eof {
return
} else {
logs <- m.Body
}
m.Release()
}))
if err != nil {
logrus.Errorf("Unable to read logs from broker. %s", err)
return
}
defer func() {
client.Unsubscribe(sub)
close(done)
close(logs)
}()
for {
select {
case buf := <-logs:
ws.SetWriteDeadline(time.Now().Add(writeWait))
ws.WriteMessage(websocket.TextMessage, buf)
case <-done:
return
case <-ticker.C:
err := ws.WriteControl(websocket.PingMessage, []byte{}, time.Now().Add(writeWait))
if err != nil {
return
}
}
}
}
// EventStream produces the User event stream, sending all repository, build
// and agent events to the client.
func EventStream(c *gin.Context) {
ws, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
if _, ok := err.(websocket.HandshakeError); !ok {
logrus.Errorf("Cannot upgrade websocket. %s", err)
}
return
}
logrus.Debugf("Successfull upgraded websocket")
user := session.User(c)
repo := map[string]bool{}
if user != nil {
repo, _ = cache.GetRepoMap(c, user)
}
eventc := make(chan []byte, 10)
quitc := make(chan bool)
tick := time.NewTicker(pingPeriod)
defer func() {
tick.Stop()
ws.Close()
logrus.Debug("Successfully closed websocket")
}()
client := stomp.MustFromContext(c)
sub, err := client.Subscribe("/topic/events", stomp.HandlerFunc(func(m *stomp.Message) {
name := m.Header.GetString("repo")
priv := m.Header.GetBool("private")
if repo[name] || !priv {
eventc <- m.Body
}
m.Release()
}))
if err != nil {
logrus.Errorf("Unable to read logs from broker. %s", err)
return
}
defer func() {
client.Unsubscribe(sub)
close(quitc)
close(eventc)
}()
go func() {
defer func() {
recover()
}()
for {
select {
case <-quitc:
return
case event, ok := <-eventc:
if !ok {
return
}
ws.SetWriteDeadline(time.Now().Add(writeWait))
ws.WriteMessage(websocket.TextMessage, event)
case <-tick.C:
err := ws.WriteControl(websocket.PingMessage, []byte{}, time.Now().Add(writeWait))
if err != nil {
return
}
}
}
}()
reader(ws)
}
func reader(ws *websocket.Conn) {
defer ws.Close()
ws.SetReadLimit(512)
@ -198,14 +55,7 @@ func reader(ws *websocket.Conn) {
}
}
//
// CANARY IMPLEMENTATION
//
// This file is a complete disaster because I'm trying to wedge in some
// experimental code. Please pardon our appearance during renovations.
//
func LogStream2(c *gin.Context) {
func LogStream(c *gin.Context) {
repo := session.Repo(c)
buildn, _ := strconv.Atoi(c.Param("build"))
jobn, _ := strconv.Atoi(c.Param("number"))
@ -286,7 +136,7 @@ func LogStream2(c *gin.Context) {
reader(ws)
}
func EventStream2(c *gin.Context) {
func EventStream(c *gin.Context) {
ws, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
if _, ok := err.(websocket.HandshakeError); !ok {

27
vendor/code.google.com/p/go.crypto/LICENSE generated vendored
View file

@ -1,27 +0,0 @@
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

22
vendor/code.google.com/p/go.crypto/PATENTS generated vendored
View file

@ -1,22 +0,0 @@
Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the Go project.
Google hereby grants to You a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer and otherwise run, modify and propagate the contents of this
implementation of Go, where such license applies only to those patent
claims, both currently owned or controlled by Google and acquired in
the future, licensable by Google that are necessarily infringed by this
implementation of Go. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of Go or any code incorporated within this
implementation of Go constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of Go
shall terminate as of the date such litigation is filed.

250
vendor/code.google.com/p/go.crypto/ssh/agent.go generated vendored
View file

@ -1,250 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"encoding/base64"
"errors"
"io"
"sync"
)
// See [PROTOCOL.agent], section 3.
const (
// 3.2 Requests from client to agent for protocol 2 key operations
agentRequestIdentities = 11
agentSignRequest = 13
agentAddIdentity = 17
agentRemoveIdentity = 18
agentRemoveAllIdentities = 19
agentAddIdConstrained = 25
// 3.3 Key-type independent requests from client to agent
agentAddSmartcardKey = 20
agentRemoveSmartcardKey = 21
agentLock = 22
agentUnlock = 23
agentAddSmartcardKeyConstrained = 26
// 3.4 Generic replies from agent to client
agentFailure = 5
agentSuccess = 6
// 3.6 Replies from agent to client for protocol 2 key operations
agentIdentitiesAnswer = 12
agentSignResponse = 14
// 3.7 Key constraint identifiers
agentConstrainLifetime = 1
agentConstrainConfirm = 2
)
// maxAgentResponseBytes is the maximum agent reply size that is accepted. This
// is a sanity check, not a limit in the spec.
const maxAgentResponseBytes = 16 << 20
// Agent messages:
// These structures mirror the wire format of the corresponding ssh agent
// messages found in [PROTOCOL.agent].
type failureAgentMsg struct{}
type successAgentMsg struct{}
// See [PROTOCOL.agent], section 2.5.2.
type requestIdentitiesAgentMsg struct{}
// See [PROTOCOL.agent], section 2.5.2.
type identitiesAnswerAgentMsg struct {
NumKeys uint32
Keys []byte `ssh:"rest"`
}
// See [PROTOCOL.agent], section 2.6.2.
type signRequestAgentMsg struct {
KeyBlob []byte
Data []byte
Flags uint32
}
// See [PROTOCOL.agent], section 2.6.2.
type signResponseAgentMsg struct {
SigBlob []byte
}
// AgentKey represents a protocol 2 key as defined in [PROTOCOL.agent],
// section 2.5.2.
type AgentKey struct {
blob []byte
Comment string
}
// String returns the storage form of an agent key with the format, base64
// encoded serialized key, and the comment if it is not empty.
func (ak *AgentKey) String() string {
algo, _, ok := parseString(ak.blob)
if !ok {
return "ssh: malformed key"
}
s := string(algo) + " " + base64.StdEncoding.EncodeToString(ak.blob)
if ak.Comment != "" {
s += " " + ak.Comment
}
return s
}
// Key returns an agent's public key as one of the supported key or certificate types.
func (ak *AgentKey) Key() (PublicKey, error) {
if key, _, ok := ParsePublicKey(ak.blob); ok {
return key, nil
}
return nil, errors.New("ssh: failed to parse key blob")
}
func parseAgentKey(in []byte) (out *AgentKey, rest []byte, ok bool) {
ak := new(AgentKey)
if ak.blob, in, ok = parseString(in); !ok {
return
}
comment, in, ok := parseString(in)
if !ok {
return
}
ak.Comment = string(comment)
return ak, in, true
}
// AgentClient provides a means to communicate with an ssh agent process based
// on the protocol described in [PROTOCOL.agent]?rev=1.6.
type AgentClient struct {
// conn is typically represented by using a *net.UnixConn
conn io.ReadWriter
// mu is used to prevent concurrent access to the agent
mu sync.Mutex
}
// NewAgentClient creates and returns a new *AgentClient using the
// passed in io.ReadWriter as a connection to a ssh agent.
func NewAgentClient(rw io.ReadWriter) *AgentClient {
return &AgentClient{conn: rw}
}
// sendAndReceive sends req to the agent and waits for a reply. On success,
// the reply is unmarshaled into reply and replyType is set to the first byte of
// the reply, which contains the type of the message.
func (ac *AgentClient) sendAndReceive(req []byte) (reply interface{}, replyType uint8, err error) {
// ac.mu prevents multiple, concurrent requests. Since the agent is typically
// on the same machine, we don't attempt to pipeline the requests.
ac.mu.Lock()
defer ac.mu.Unlock()
msg := make([]byte, stringLength(len(req)))
marshalString(msg, req)
if _, err = ac.conn.Write(msg); err != nil {
return
}
var respSizeBuf [4]byte
if _, err = io.ReadFull(ac.conn, respSizeBuf[:]); err != nil {
return
}
respSize, _, _ := parseUint32(respSizeBuf[:])
if respSize > maxAgentResponseBytes {
err = errors.New("ssh: agent reply too large")
return
}
buf := make([]byte, respSize)
if _, err = io.ReadFull(ac.conn, buf); err != nil {
return
}
return unmarshalAgentMsg(buf)
}
// RequestIdentities queries the agent for protocol 2 keys as defined in
// [PROTOCOL.agent] section 2.5.2.
func (ac *AgentClient) RequestIdentities() ([]*AgentKey, error) {
req := marshal(agentRequestIdentities, requestIdentitiesAgentMsg{})
msg, msgType, err := ac.sendAndReceive(req)
if err != nil {
return nil, err
}
switch msg := msg.(type) {
case *identitiesAnswerAgentMsg:
if msg.NumKeys > maxAgentResponseBytes/8 {
return nil, errors.New("ssh: too many keys in agent reply")
}
keys := make([]*AgentKey, msg.NumKeys)
data := msg.Keys
for i := uint32(0); i < msg.NumKeys; i++ {
var key *AgentKey
var ok bool
if key, data, ok = parseAgentKey(data); !ok {
return nil, ParseError{agentIdentitiesAnswer}
}
keys[i] = key
}
return keys, nil
case *failureAgentMsg:
return nil, errors.New("ssh: failed to list keys")
}
return nil, UnexpectedMessageError{agentIdentitiesAnswer, msgType}
}
// SignRequest requests the signing of data by the agent using a protocol 2 key
// as defined in [PROTOCOL.agent] section 2.6.2.
func (ac *AgentClient) SignRequest(key PublicKey, data []byte) ([]byte, error) {
req := marshal(agentSignRequest, signRequestAgentMsg{
KeyBlob: MarshalPublicKey(key),
Data: data,
})
msg, msgType, err := ac.sendAndReceive(req)
if err != nil {
return nil, err
}
switch msg := msg.(type) {
case *signResponseAgentMsg:
return msg.SigBlob, nil
case *failureAgentMsg:
return nil, errors.New("ssh: failed to sign challenge")
}
return nil, UnexpectedMessageError{agentSignResponse, msgType}
}
// unmarshalAgentMsg parses an agent message in packet, returning the parsed
// form and the message type of packet.
func unmarshalAgentMsg(packet []byte) (interface{}, uint8, error) {
if len(packet) < 1 {
return nil, 0, ParseError{0}
}
var msg interface{}
switch packet[0] {
case agentFailure:
msg = new(failureAgentMsg)
case agentSuccess:
msg = new(successAgentMsg)
case agentIdentitiesAnswer:
msg = new(identitiesAnswerAgentMsg)
case agentSignResponse:
msg = new(signResponseAgentMsg)
default:
return nil, 0, UnexpectedMessageError{0, packet[0]}
}
if err := unmarshal(msg, packet, packet[0]); err != nil {
return nil, 0, err
}
return msg, packet[0], nil
}

96
vendor/code.google.com/p/go.crypto/ssh/buffer.go generated vendored
View file

@ -1,96 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"io"
"sync"
)
// buffer provides a linked list buffer for data exchange
// between producer and consumer. Theoretically the buffer is
// of unlimited capacity as it does no allocation of its own.
type buffer struct {
// protects concurrent access to head, tail and closed
*sync.Cond
head *element // the buffer that will be read first
tail *element // the buffer that will be read last
closed bool
}
// An element represents a single link in a linked list.
type element struct {
buf []byte
next *element
}
// newBuffer returns an empty buffer that is not closed.
func newBuffer() *buffer {
e := new(element)
b := &buffer{
Cond: newCond(),
head: e,
tail: e,
}
return b
}
// write makes buf available for Read to receive.
// buf must not be modified after the call to write.
func (b *buffer) write(buf []byte) {
b.Cond.L.Lock()
defer b.Cond.L.Unlock()
e := &element{buf: buf}
b.tail.next = e
b.tail = e
b.Cond.Signal()
}
// eof closes the buffer. Reads from the buffer once all
// the data has been consumed will receive os.EOF.
func (b *buffer) eof() error {
b.Cond.L.Lock()
defer b.Cond.L.Unlock()
b.closed = true
b.Cond.Signal()
return nil
}
// Read reads data from the internal buffer in buf.
// Reads will block if no data is available, or until
// the buffer is closed.
func (b *buffer) Read(buf []byte) (n int, err error) {
b.Cond.L.Lock()
defer b.Cond.L.Unlock()
for len(buf) > 0 {
// if there is data in b.head, copy it
if len(b.head.buf) > 0 {
r := copy(buf, b.head.buf)
buf, b.head.buf = buf[r:], b.head.buf[r:]
n += r
continue
}
// if there is a next buffer, make it the head
if len(b.head.buf) == 0 && b.head != b.tail {
b.head = b.head.next
continue
}
// if at least one byte has been copied, return
if n > 0 {
break
}
// if nothing was read, and there is nothing outstanding
// check to see if the buffer is closed.
if b.closed {
err = io.EOF
break
}
// out of buffers, wait for producer
b.Cond.Wait()
}
return
}

378
vendor/code.google.com/p/go.crypto/ssh/certs.go generated vendored
View file

@ -1,378 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"time"
)
// These constants from [PROTOCOL.certkeys] represent the algorithm names
// for certificate types supported by this package.
const (
CertAlgoRSAv01 = "ssh-rsa-cert-v01@openssh.com"
CertAlgoDSAv01 = "ssh-dss-cert-v01@openssh.com"
CertAlgoECDSA256v01 = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
CertAlgoECDSA384v01 = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
CertAlgoECDSA521v01 = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
)
// Certificate types are used to specify whether a certificate is for identification
// of a user or a host. Current identities are defined in [PROTOCOL.certkeys].
const (
UserCert = 1
HostCert = 2
)
type signature struct {
Format string
Blob []byte
}
type tuple struct {
Name string
Data string
}
const (
maxUint64 = 1<<64 - 1
maxInt64 = 1<<63 - 1
)
// CertTime represents an unsigned 64-bit time value in seconds starting from
// UNIX epoch. We use CertTime instead of time.Time in order to properly handle
// the "infinite" time value ^0, which would become negative when expressed as
// an int64.
type CertTime uint64
func (ct CertTime) Time() time.Time {
if ct > maxInt64 {
return time.Unix(maxInt64, 0)
}
return time.Unix(int64(ct), 0)
}
func (ct CertTime) IsInfinite() bool {
return ct == maxUint64
}
// An OpenSSHCertV01 represents an OpenSSH certificate as defined in
// [PROTOCOL.certkeys]?rev=1.8.
type OpenSSHCertV01 struct {
Nonce []byte
Key PublicKey
Serial uint64
Type uint32
KeyId string
ValidPrincipals []string
ValidAfter, ValidBefore CertTime
CriticalOptions []tuple
Extensions []tuple
Reserved []byte
SignatureKey PublicKey
Signature *signature
}
// validateOpenSSHCertV01Signature uses the cert's SignatureKey to verify that
// the cert's Signature.Blob is the result of signing the cert bytes starting
// from the algorithm string and going up to and including the SignatureKey.
func validateOpenSSHCertV01Signature(cert *OpenSSHCertV01) bool {
return cert.SignatureKey.Verify(cert.BytesForSigning(), cert.Signature.Blob)
}
var certAlgoNames = map[string]string{
KeyAlgoRSA: CertAlgoRSAv01,
KeyAlgoDSA: CertAlgoDSAv01,
KeyAlgoECDSA256: CertAlgoECDSA256v01,
KeyAlgoECDSA384: CertAlgoECDSA384v01,
KeyAlgoECDSA521: CertAlgoECDSA521v01,
}
// certToPrivAlgo returns the underlying algorithm for a certificate algorithm.
// Panics if a non-certificate algorithm is passed.
func certToPrivAlgo(algo string) string {
for privAlgo, pubAlgo := range certAlgoNames {
if pubAlgo == algo {
return privAlgo
}
}
panic("unknown cert algorithm")
}
func (cert *OpenSSHCertV01) marshal(includeAlgo, includeSig bool) []byte {
algoName := cert.PublicKeyAlgo()
pubKey := cert.Key.Marshal()
sigKey := MarshalPublicKey(cert.SignatureKey)
var length int
if includeAlgo {
length += stringLength(len(algoName))
}
length += stringLength(len(cert.Nonce))
length += len(pubKey)
length += 8 // Length of Serial
length += 4 // Length of Type
length += stringLength(len(cert.KeyId))
length += lengthPrefixedNameListLength(cert.ValidPrincipals)
length += 8 // Length of ValidAfter
length += 8 // Length of ValidBefore
length += tupleListLength(cert.CriticalOptions)
length += tupleListLength(cert.Extensions)
length += stringLength(len(cert.Reserved))
length += stringLength(len(sigKey))
if includeSig {
length += signatureLength(cert.Signature)
}
ret := make([]byte, length)
r := ret
if includeAlgo {
r = marshalString(r, []byte(algoName))
}
r = marshalString(r, cert.Nonce)
copy(r, pubKey)
r = r[len(pubKey):]
r = marshalUint64(r, cert.Serial)
r = marshalUint32(r, cert.Type)
r = marshalString(r, []byte(cert.KeyId))
r = marshalLengthPrefixedNameList(r, cert.ValidPrincipals)
r = marshalUint64(r, uint64(cert.ValidAfter))
r = marshalUint64(r, uint64(cert.ValidBefore))
r = marshalTupleList(r, cert.CriticalOptions)
r = marshalTupleList(r, cert.Extensions)
r = marshalString(r, cert.Reserved)
r = marshalString(r, sigKey)
if includeSig {
r = marshalSignature(r, cert.Signature)
}
if len(r) > 0 {
panic("ssh: internal error, marshaling certificate did not fill the entire buffer")
}
return ret
}
func (cert *OpenSSHCertV01) BytesForSigning() []byte {
return cert.marshal(true, false)
}
func (cert *OpenSSHCertV01) Marshal() []byte {
return cert.marshal(false, true)
}
func (c *OpenSSHCertV01) PublicKeyAlgo() string {
algo, ok := certAlgoNames[c.Key.PublicKeyAlgo()]
if !ok {
panic("unknown cert key type")
}
return algo
}
func (c *OpenSSHCertV01) PrivateKeyAlgo() string {
return c.Key.PrivateKeyAlgo()
}
func (c *OpenSSHCertV01) Verify(data []byte, sig []byte) bool {
return c.Key.Verify(data, sig)
}
func parseOpenSSHCertV01(in []byte, algo string) (out *OpenSSHCertV01, rest []byte, ok bool) {
cert := new(OpenSSHCertV01)
if cert.Nonce, in, ok = parseString(in); !ok {
return
}
privAlgo := certToPrivAlgo(algo)
cert.Key, in, ok = parsePubKey(in, privAlgo)
if !ok {
return
}
// We test PublicKeyAlgo to make sure we don't use some weird sub-cert.
if cert.Key.PublicKeyAlgo() != privAlgo {
ok = false
return
}
if cert.Serial, in, ok = parseUint64(in); !ok {
return
}
if cert.Type, in, ok = parseUint32(in); !ok {
return
}
keyId, in, ok := parseString(in)
if !ok {
return
}
cert.KeyId = string(keyId)
if cert.ValidPrincipals, in, ok = parseLengthPrefixedNameList(in); !ok {
return
}
va, in, ok := parseUint64(in)
if !ok {
return
}
cert.ValidAfter = CertTime(va)
vb, in, ok := parseUint64(in)
if !ok {
return
}
cert.ValidBefore = CertTime(vb)
if cert.CriticalOptions, in, ok = parseTupleList(in); !ok {
return
}
if cert.Extensions, in, ok = parseTupleList(in); !ok {
return
}
if cert.Reserved, in, ok = parseString(in); !ok {
return
}
sigKey, in, ok := parseString(in)
if !ok {
return
}
if cert.SignatureKey, _, ok = ParsePublicKey(sigKey); !ok {
return
}
if cert.Signature, in, ok = parseSignature(in); !ok {
return
}
ok = true
return cert, in, ok
}
func lengthPrefixedNameListLength(namelist []string) int {
length := 4 // length prefix for list
for _, name := range namelist {
length += 4 // length prefix for name
length += len(name)
}
return length
}
func marshalLengthPrefixedNameList(to []byte, namelist []string) []byte {
length := uint32(lengthPrefixedNameListLength(namelist) - 4)
to = marshalUint32(to, length)
for _, name := range namelist {
to = marshalString(to, []byte(name))
}
return to
}
func parseLengthPrefixedNameList(in []byte) (out []string, rest []byte, ok bool) {
list, rest, ok := parseString(in)
if !ok {
return
}
for len(list) > 0 {
var next []byte
if next, list, ok = parseString(list); !ok {
return nil, nil, false
}
out = append(out, string(next))
}
ok = true
return
}
func tupleListLength(tupleList []tuple) int {
length := 4 // length prefix for list
for _, t := range tupleList {
length += 4 // length prefix for t.Name
length += len(t.Name)
length += 4 // length prefix for t.Data
length += len(t.Data)
}
return length
}
func marshalTupleList(to []byte, tuplelist []tuple) []byte {
length := uint32(tupleListLength(tuplelist) - 4)
to = marshalUint32(to, length)
for _, t := range tuplelist {
to = marshalString(to, []byte(t.Name))
to = marshalString(to, []byte(t.Data))
}
return to
}
func parseTupleList(in []byte) (out []tuple, rest []byte, ok bool) {
list, rest, ok := parseString(in)
if !ok {
return
}
for len(list) > 0 {
var name, data []byte
var ok bool
name, list, ok = parseString(list)
if !ok {
return nil, nil, false
}
data, list, ok = parseString(list)
if !ok {
return nil, nil, false
}
out = append(out, tuple{string(name), string(data)})
}
ok = true
return
}
func signatureLength(sig *signature) int {
length := 4 // length prefix for signature
length += stringLength(len(sig.Format))
length += stringLength(len(sig.Blob))
return length
}
func marshalSignature(to []byte, sig *signature) []byte {
length := uint32(signatureLength(sig) - 4)
to = marshalUint32(to, length)
to = marshalString(to, []byte(sig.Format))
to = marshalString(to, sig.Blob)
return to
}
func parseSignatureBody(in []byte) (out *signature, rest []byte, ok bool) {
var format []byte
if format, in, ok = parseString(in); !ok {
return
}
out = &signature{
Format: string(format),
}
if out.Blob, in, ok = parseString(in); !ok {
return
}
return out, in, ok
}
func parseSignature(in []byte) (out *signature, rest []byte, ok bool) {
var sigBytes []byte
if sigBytes, rest, ok = parseString(in); !ok {
return
}
out, sigBytes, ok = parseSignatureBody(sigBytes)
if !ok || len(sigBytes) > 0 {
return nil, nil, false
}
return
}

594
vendor/code.google.com/p/go.crypto/ssh/channel.go generated vendored
View file

@ -1,594 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"errors"
"fmt"
"io"
"sync"
"sync/atomic"
)
// extendedDataTypeCode identifies an OpenSSL extended data type. See RFC 4254,
// section 5.2.
type extendedDataTypeCode uint32
const (
// extendedDataStderr is the extended data type that is used for stderr.
extendedDataStderr extendedDataTypeCode = 1
// minPacketLength defines the smallest valid packet
minPacketLength = 9
// channelMaxPacketSize defines the maximum packet size advertised in open messages
channelMaxPacketSize = 1 << 15 // RFC 4253 6.1, minimum 32 KiB
// channelWindowSize defines the window size advertised in open messages
channelWindowSize = 64 * channelMaxPacketSize // Like OpenSSH
)
// A Channel is an ordered, reliable, duplex stream that is multiplexed over an
// SSH connection. Channel.Read can return a ChannelRequest as an error.
type Channel interface {
// Accept accepts the channel creation request.
Accept() error
// Reject rejects the channel creation request. After calling this, no
// other methods on the Channel may be called. If they are then the
// peer is likely to signal a protocol error and drop the connection.
Reject(reason RejectionReason, message string) error
// Read may return a ChannelRequest as an error.
Read(data []byte) (int, error)
Write(data []byte) (int, error)
Close() error
// Stderr returns an io.Writer that writes to this channel with the
// extended data type set to stderr.
Stderr() io.Writer
// AckRequest either sends an ack or nack to the channel request.
AckRequest(ok bool) error
// ChannelType returns the type of the channel, as supplied by the
// client.
ChannelType() string
// ExtraData returns the arbitrary payload for this channel, as supplied
// by the client. This data is specific to the channel type.
ExtraData() []byte
}
// ChannelRequest represents a request sent on a channel, outside of the normal
// stream of bytes. It may result from calling Read on a Channel.
type ChannelRequest struct {
Request string
WantReply bool
Payload []byte
}
func (c ChannelRequest) Error() string {
return "ssh: channel request received"
}
// RejectionReason is an enumeration used when rejecting channel creation
// requests. See RFC 4254, section 5.1.
type RejectionReason uint32
const (
Prohibited RejectionReason = iota + 1
ConnectionFailed
UnknownChannelType
ResourceShortage
)
// String converts the rejection reason to human readable form.
func (r RejectionReason) String() string {
switch r {
case Prohibited:
return "administratively prohibited"
case ConnectionFailed:
return "connect failed"
case UnknownChannelType:
return "unknown channel type"
case ResourceShortage:
return "resource shortage"
}
return fmt.Sprintf("unknown reason %d", int(r))
}
type channel struct {
packetConn // the underlying transport
localId, remoteId uint32
remoteWin window
maxPacket uint32
isClosed uint32 // atomic bool, non zero if true
}
func (c *channel) sendWindowAdj(n int) error {
msg := windowAdjustMsg{
PeersId: c.remoteId,
AdditionalBytes: uint32(n),
}
return c.writePacket(marshal(msgChannelWindowAdjust, msg))
}
// sendEOF sends EOF to the remote side. RFC 4254 Section 5.3
func (c *channel) sendEOF() error {
return c.writePacket(marshal(msgChannelEOF, channelEOFMsg{
PeersId: c.remoteId,
}))
}
// sendClose informs the remote side of our intent to close the channel.
func (c *channel) sendClose() error {
return c.packetConn.writePacket(marshal(msgChannelClose, channelCloseMsg{
PeersId: c.remoteId,
}))
}
func (c *channel) sendChannelOpenFailure(reason RejectionReason, message string) error {
reject := channelOpenFailureMsg{
PeersId: c.remoteId,
Reason: reason,
Message: message,
Language: "en",
}
return c.writePacket(marshal(msgChannelOpenFailure, reject))
}
func (c *channel) writePacket(b []byte) error {
if c.closed() {
return io.EOF
}
if uint32(len(b)) > c.maxPacket {
return fmt.Errorf("ssh: cannot write %d bytes, maxPacket is %d bytes", len(b), c.maxPacket)
}
return c.packetConn.writePacket(b)
}
func (c *channel) closed() bool {
return atomic.LoadUint32(&c.isClosed) > 0
}
func (c *channel) setClosed() bool {
return atomic.CompareAndSwapUint32(&c.isClosed, 0, 1)
}
type serverChan struct {
channel
// immutable once created
chanType string
extraData []byte
serverConn *ServerConn
myWindow uint32
theyClosed bool // indicates the close msg has been received from the remote side
theySentEOF bool
isDead uint32
err error
pendingRequests []ChannelRequest
pendingData []byte
head, length int
// This lock is inferior to serverConn.lock
cond *sync.Cond
}
func (c *serverChan) Accept() error {
c.serverConn.lock.Lock()
defer c.serverConn.lock.Unlock()
if c.serverConn.err != nil {
return c.serverConn.err
}
confirm := channelOpenConfirmMsg{
PeersId: c.remoteId,
MyId: c.localId,
MyWindow: c.myWindow,
MaxPacketSize: c.maxPacket,
}
return c.writePacket(marshal(msgChannelOpenConfirm, confirm))
}
func (c *serverChan) Reject(reason RejectionReason, message string) error {
c.serverConn.lock.Lock()
defer c.serverConn.lock.Unlock()
if c.serverConn.err != nil {
return c.serverConn.err
}
return c.sendChannelOpenFailure(reason, message)
}
func (c *serverChan) handlePacket(packet interface{}) {
c.cond.L.Lock()
defer c.cond.L.Unlock()
switch packet := packet.(type) {
case *channelRequestMsg:
req := ChannelRequest{
Request: packet.Request,
WantReply: packet.WantReply,
Payload: packet.RequestSpecificData,
}
c.pendingRequests = append(c.pendingRequests, req)
c.cond.Signal()
case *channelCloseMsg:
c.theyClosed = true
c.cond.Signal()
case *channelEOFMsg:
c.theySentEOF = true
c.cond.Signal()
case *windowAdjustMsg:
if !c.remoteWin.add(packet.AdditionalBytes) {
panic("illegal window update")
}
default:
panic("unknown packet type")
}
}
func (c *serverChan) handleData(data []byte) {
c.cond.L.Lock()
defer c.cond.L.Unlock()
// The other side should never send us more than our window.
if len(data)+c.length > len(c.pendingData) {
// TODO(agl): we should tear down the channel with a protocol
// error.
return
}
c.myWindow -= uint32(len(data))
for i := 0; i < 2; i++ {
tail := c.head + c.length
if tail >= len(c.pendingData) {
tail -= len(c.pendingData)
}
n := copy(c.pendingData[tail:], data)
data = data[n:]
c.length += n
}
c.cond.Signal()
}
func (c *serverChan) Stderr() io.Writer {
return extendedDataChannel{c: c, t: extendedDataStderr}
}
// extendedDataChannel is an io.Writer that writes any data to c as extended
// data of the given type.
type extendedDataChannel struct {
t extendedDataTypeCode
c *serverChan
}
func (edc extendedDataChannel) Write(data []byte) (n int, err error) {
const headerLength = 13 // 1 byte message type, 4 bytes remoteId, 4 bytes extended message type, 4 bytes data length
c := edc.c
for len(data) > 0 {
space := min(c.maxPacket-headerLength, len(data))
if space, err = c.getWindowSpace(space); err != nil {
return 0, err
}
todo := data
if uint32(len(todo)) > space {
todo = todo[:space]
}
packet := make([]byte, headerLength+len(todo))
packet[0] = msgChannelExtendedData
marshalUint32(packet[1:], c.remoteId)
marshalUint32(packet[5:], uint32(edc.t))
marshalUint32(packet[9:], uint32(len(todo)))
copy(packet[13:], todo)
if err = c.writePacket(packet); err != nil {
return
}
n += len(todo)
data = data[len(todo):]
}
return
}
func (c *serverChan) Read(data []byte) (n int, err error) {
n, err, windowAdjustment := c.read(data)
if windowAdjustment > 0 {
packet := marshal(msgChannelWindowAdjust, windowAdjustMsg{
PeersId: c.remoteId,
AdditionalBytes: windowAdjustment,
})
err = c.writePacket(packet)
}
return
}
func (c *serverChan) read(data []byte) (n int, err error, windowAdjustment uint32) {
c.cond.L.Lock()
defer c.cond.L.Unlock()
if c.err != nil {
return 0, c.err, 0
}
for {
if c.theySentEOF || c.theyClosed || c.dead() {
return 0, io.EOF, 0
}
if len(c.pendingRequests) > 0 {
req := c.pendingRequests[0]
if len(c.pendingRequests) == 1 {
c.pendingRequests = nil
} else {
oldPendingRequests := c.pendingRequests
c.pendingRequests = make([]ChannelRequest, len(oldPendingRequests)-1)
copy(c.pendingRequests, oldPendingRequests[1:])
}
return 0, req, 0
}
if c.length > 0 {
tail := min(uint32(c.head+c.length), len(c.pendingData))
n = copy(data, c.pendingData[c.head:tail])
c.head += n
c.length -= n
if c.head == len(c.pendingData) {
c.head = 0
}
windowAdjustment = uint32(len(c.pendingData)-c.length) - c.myWindow
if windowAdjustment < uint32(len(c.pendingData)/2) {
windowAdjustment = 0
}
c.myWindow += windowAdjustment
return
}
c.cond.Wait()
}
panic("unreachable")
}
// getWindowSpace takes, at most, max bytes of space from the peer's window. It
// returns the number of bytes actually reserved.
func (c *serverChan) getWindowSpace(max uint32) (uint32, error) {
if c.dead() || c.closed() {
return 0, io.EOF
}
return c.remoteWin.reserve(max), nil
}
func (c *serverChan) dead() bool {
return atomic.LoadUint32(&c.isDead) > 0
}
func (c *serverChan) setDead() {
atomic.StoreUint32(&c.isDead, 1)
}
func (c *serverChan) Write(data []byte) (n int, err error) {
const headerLength = 9 // 1 byte message type, 4 bytes remoteId, 4 bytes data length
for len(data) > 0 {
space := min(c.maxPacket-headerLength, len(data))
if space, err = c.getWindowSpace(space); err != nil {
return 0, err
}
todo := data
if uint32(len(todo)) > space {
todo = todo[:space]
}
packet := make([]byte, headerLength+len(todo))
packet[0] = msgChannelData
marshalUint32(packet[1:], c.remoteId)
marshalUint32(packet[5:], uint32(len(todo)))
copy(packet[9:], todo)
if err = c.writePacket(packet); err != nil {
return
}
n += len(todo)
data = data[len(todo):]
}
return
}
// Close signals the intent to close the channel.
func (c *serverChan) Close() error {
c.serverConn.lock.Lock()
defer c.serverConn.lock.Unlock()
if c.serverConn.err != nil {
return c.serverConn.err
}
if !c.setClosed() {
return errors.New("ssh: channel already closed")
}
return c.sendClose()
}
func (c *serverChan) AckRequest(ok bool) error {
c.serverConn.lock.Lock()
defer c.serverConn.lock.Unlock()
if c.serverConn.err != nil {
return c.serverConn.err
}
if !ok {
ack := channelRequestFailureMsg{
PeersId: c.remoteId,
}
return c.writePacket(marshal(msgChannelFailure, ack))
}
ack := channelRequestSuccessMsg{
PeersId: c.remoteId,
}
return c.writePacket(marshal(msgChannelSuccess, ack))
}
func (c *serverChan) ChannelType() string {
return c.chanType
}
func (c *serverChan) ExtraData() []byte {
return c.extraData
}
// A clientChan represents a single RFC 4254 channel multiplexed
// over a SSH connection.
type clientChan struct {
channel
stdin *chanWriter
stdout *chanReader
stderr *chanReader
msg chan interface{}
}
// newClientChan returns a partially constructed *clientChan
// using the local id provided. To be usable clientChan.remoteId
// needs to be assigned once known.
func newClientChan(cc packetConn, id uint32) *clientChan {
c := &clientChan{
channel: channel{
packetConn: cc,
localId: id,
remoteWin: window{Cond: newCond()},
},
msg: make(chan interface{}, 16),
}
c.stdin = &chanWriter{
channel: &c.channel,
}
c.stdout = &chanReader{
channel: &c.channel,
buffer: newBuffer(),
}
c.stderr = &chanReader{
channel: &c.channel,
buffer: newBuffer(),
}
return c
}
// waitForChannelOpenResponse, if successful, fills out
// the remoteId and records any initial window advertisement.
func (c *clientChan) waitForChannelOpenResponse() error {
switch msg := (<-c.msg).(type) {
case *channelOpenConfirmMsg:
if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 {
return errors.New("ssh: invalid MaxPacketSize from peer")
}
// fixup remoteId field
c.remoteId = msg.MyId
c.maxPacket = msg.MaxPacketSize
c.remoteWin.add(msg.MyWindow)
return nil
case *channelOpenFailureMsg:
return errors.New(safeString(msg.Message))
}
return errors.New("ssh: unexpected packet")
}
// Close signals the intent to close the channel.
func (c *clientChan) Close() error {
if !c.setClosed() {
return errors.New("ssh: channel already closed")
}
c.stdout.eof()
c.stderr.eof()
return c.sendClose()
}
// A chanWriter represents the stdin of a remote process.
type chanWriter struct {
*channel
// indicates the writer has been closed. eof is owned by the
// caller of Write/Close.
eof bool
}
// Write writes data to the remote process's standard input.
func (w *chanWriter) Write(data []byte) (written int, err error) {
const headerLength = 9 // 1 byte message type, 4 bytes remoteId, 4 bytes data length
for len(data) > 0 {
if w.eof || w.closed() {
err = io.EOF
return
}
// never send more data than maxPacket even if
// there is sufficient window.
n := min(w.maxPacket-headerLength, len(data))
r := w.remoteWin.reserve(n)
n = r
remoteId := w.remoteId
packet := []byte{
msgChannelData,
byte(remoteId >> 24), byte(remoteId >> 16), byte(remoteId >> 8), byte(remoteId),
byte(n >> 24), byte(n >> 16), byte(n >> 8), byte(n),
}
if err = w.writePacket(append(packet, data[:n]...)); err != nil {
break
}
data = data[n:]
written += int(n)
}
return
}
func min(a uint32, b int) uint32 {
if a < uint32(b) {
return a
}
return uint32(b)
}
func (w *chanWriter) Close() error {
w.eof = true
return w.sendEOF()
}
// A chanReader represents stdout or stderr of a remote process.
type chanReader struct {
*channel // the channel backing this reader
*buffer
}
// Read reads data from the remote process's stdout or stderr.
func (r *chanReader) Read(buf []byte) (int, error) {
n, err := r.buffer.Read(buf)
if err != nil {
if err == io.EOF {
return n, err
}
return 0, err
}
err = r.sendWindowAdj(n)
if err == io.EOF && n > 0 {
// sendWindowAdjust can return io.EOF if the remote peer has
// closed the connection, however we want to defer forwarding io.EOF to the
// caller of Read until the buffer has been drained.
err = nil
}
return n, err
}

100
vendor/code.google.com/p/go.crypto/ssh/cipher.go generated vendored
View file

@ -1,100 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"crypto/aes"
"crypto/cipher"
"crypto/rc4"
)
// streamDump is used to dump the initial keystream for stream ciphers. It is a
// a write-only buffer, and not intended for reading so do not require a mutex.
var streamDump [512]byte
// noneCipher implements cipher.Stream and provides no encryption. It is used
// by the transport before the first key-exchange.
type noneCipher struct{}
func (c noneCipher) XORKeyStream(dst, src []byte) {
copy(dst, src)
}
func newAESCTR(key, iv []byte) (cipher.Stream, error) {
c, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
return cipher.NewCTR(c, iv), nil
}
func newRC4(key, iv []byte) (cipher.Stream, error) {
return rc4.NewCipher(key)
}
type cipherMode struct {
keySize int
ivSize int
skip int
createFunc func(key, iv []byte) (cipher.Stream, error)
}
func (c *cipherMode) createCipher(key, iv []byte) (cipher.Stream, error) {
if len(key) < c.keySize {
panic("ssh: key length too small for cipher")
}
if len(iv) < c.ivSize {
panic("ssh: iv too small for cipher")
}
stream, err := c.createFunc(key[:c.keySize], iv[:c.ivSize])
if err != nil {
return nil, err
}
for remainingToDump := c.skip; remainingToDump > 0; {
dumpThisTime := remainingToDump
if dumpThisTime > len(streamDump) {
dumpThisTime = len(streamDump)
}
stream.XORKeyStream(streamDump[:dumpThisTime], streamDump[:dumpThisTime])
remainingToDump -= dumpThisTime
}
return stream, nil
}
// Specifies a default set of ciphers and a preference order. This is based on
// OpenSSH's default client preference order, minus algorithms that are not
// implemented.
var DefaultCipherOrder = []string{
"aes128-ctr", "aes192-ctr", "aes256-ctr",
"arcfour256", "arcfour128",
}
// cipherModes documents properties of supported ciphers. Ciphers not included
// are not supported and will not be negotiated, even if explicitly requested in
// ClientConfig.Crypto.Ciphers.
var cipherModes = map[string]*cipherMode{
// Ciphers from RFC4344, which introduced many CTR-based ciphers. Algorithms
// are defined in the order specified in the RFC.
"aes128-ctr": {16, aes.BlockSize, 0, newAESCTR},
"aes192-ctr": {24, aes.BlockSize, 0, newAESCTR},
"aes256-ctr": {32, aes.BlockSize, 0, newAESCTR},
// Ciphers from RFC4345, which introduces security-improved arcfour ciphers.
// They are defined in the order specified in the RFC.
"arcfour128": {16, 0, 1536, newRC4},
"arcfour256": {32, 0, 1536, newRC4},
}
// defaultKeyExchangeOrder specifies a default set of key exchange algorithms
// with preferences.
var defaultKeyExchangeOrder = []string{
// P384 and P521 are not constant-time yet, but since we don't
// reuse ephemeral keys, using them for ECDH should be OK.
kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521,
kexAlgoDH14SHA1, kexAlgoDH1SHA1,
}

524
vendor/code.google.com/p/go.crypto/ssh/client.go generated vendored
View file

@ -1,524 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"crypto/rand"
"encoding/binary"
"errors"
"fmt"
"io"
"net"
"sync"
)
// ClientConn represents the client side of an SSH connection.
type ClientConn struct {
transport *transport
config *ClientConfig
chanList // channels associated with this connection
forwardList // forwarded tcpip connections from the remote side
globalRequest
// Address as passed to the Dial function.
dialAddress string
serverVersion string
}
type globalRequest struct {
sync.Mutex
response chan interface{}
}
// Client returns a new SSH client connection using c as the underlying transport.
func Client(c net.Conn, config *ClientConfig) (*ClientConn, error) {
return clientWithAddress(c, "", config)
}
func clientWithAddress(c net.Conn, addr string, config *ClientConfig) (*ClientConn, error) {
conn := &ClientConn{
transport: newTransport(c, config.rand(), true /* is client */),
config: config,
globalRequest: globalRequest{response: make(chan interface{}, 1)},
dialAddress: addr,
}
if err := conn.handshake(); err != nil {
conn.transport.Close()
return nil, fmt.Errorf("handshake failed: %v", err)
}
go conn.mainLoop()
return conn, nil
}
// Close closes the connection.
func (c *ClientConn) Close() error { return c.transport.Close() }
// LocalAddr returns the local network address.
func (c *ClientConn) LocalAddr() net.Addr { return c.transport.LocalAddr() }
// RemoteAddr returns the remote network address.
func (c *ClientConn) RemoteAddr() net.Addr { return c.transport.RemoteAddr() }
// handshake performs the client side key exchange. See RFC 4253 Section 7.
func (c *ClientConn) handshake() error {
clientVersion := []byte(packageVersion)
if c.config.ClientVersion != "" {
clientVersion = []byte(c.config.ClientVersion)
}
serverVersion, err := exchangeVersions(c.transport.Conn, clientVersion)
if err != nil {
return err
}
c.serverVersion = string(serverVersion)
clientKexInit := kexInitMsg{
KexAlgos: c.config.Crypto.kexes(),
ServerHostKeyAlgos: supportedHostKeyAlgos,
CiphersClientServer: c.config.Crypto.ciphers(),
CiphersServerClient: c.config.Crypto.ciphers(),
MACsClientServer: c.config.Crypto.macs(),
MACsServerClient: c.config.Crypto.macs(),
CompressionClientServer: supportedCompressions,
CompressionServerClient: supportedCompressions,
}
kexInitPacket := marshal(msgKexInit, clientKexInit)
if err := c.transport.writePacket(kexInitPacket); err != nil {
return err
}
packet, err := c.transport.readPacket()
if err != nil {
return err
}
var serverKexInit kexInitMsg
if err = unmarshal(&serverKexInit, packet, msgKexInit); err != nil {
return err
}
algs := findAgreedAlgorithms(&clientKexInit, &serverKexInit)
if algs == nil {
return errors.New("ssh: no common algorithms")
}
if serverKexInit.FirstKexFollows && algs.kex != serverKexInit.KexAlgos[0] {
// The server sent a Kex message for the wrong algorithm,
// which we have to ignore.
if _, err := c.transport.readPacket(); err != nil {
return err
}
}
kex, ok := kexAlgoMap[algs.kex]
if !ok {
return fmt.Errorf("ssh: unexpected key exchange algorithm %v", algs.kex)
}
magics := handshakeMagics{
clientVersion: clientVersion,
serverVersion: serverVersion,
clientKexInit: kexInitPacket,
serverKexInit: packet,
}
result, err := kex.Client(c.transport, c.config.rand(), &magics)
if err != nil {
return err
}
err = verifyHostKeySignature(algs.hostKey, result.HostKey, result.H, result.Signature)
if err != nil {
return err
}
if checker := c.config.HostKeyChecker; checker != nil {
err = checker.Check(c.dialAddress, c.transport.RemoteAddr(), algs.hostKey, result.HostKey)
if err != nil {
return err
}
}
c.transport.prepareKeyChange(algs, result)
if err = c.transport.writePacket([]byte{msgNewKeys}); err != nil {
return err
}
if packet, err = c.transport.readPacket(); err != nil {
return err
}
if packet[0] != msgNewKeys {
return UnexpectedMessageError{msgNewKeys, packet[0]}
}
return c.authenticate()
}
// Verify the host key obtained in the key exchange.
func verifyHostKeySignature(hostKeyAlgo string, hostKeyBytes []byte, data []byte, signature []byte) error {
hostKey, rest, ok := ParsePublicKey(hostKeyBytes)
if len(rest) > 0 || !ok {
return errors.New("ssh: could not parse hostkey")
}
sig, rest, ok := parseSignatureBody(signature)
if len(rest) > 0 || !ok {
return errors.New("ssh: signature parse error")
}
if sig.Format != hostKeyAlgo {
return fmt.Errorf("ssh: unexpected signature type %q", sig.Format)
}
if !hostKey.Verify(data, sig.Blob) {
return errors.New("ssh: host key signature error")
}
return nil
}
// mainLoop reads incoming messages and routes channel messages
// to their respective ClientChans.
func (c *ClientConn) mainLoop() {
defer func() {
c.transport.Close()
c.chanList.closeAll()
c.forwardList.closeAll()
}()
for {
packet, err := c.transport.readPacket()
if err != nil {
break
}
// TODO(dfc) A note on blocking channel use.
// The msg, data and dataExt channels of a clientChan can
// cause this loop to block indefinitely if the consumer does
// not service them.
switch packet[0] {
case msgChannelData:
if len(packet) < 9 {
// malformed data packet
return
}
remoteId := binary.BigEndian.Uint32(packet[1:5])
length := binary.BigEndian.Uint32(packet[5:9])
packet = packet[9:]
if length != uint32(len(packet)) {
return
}
ch, ok := c.getChan(remoteId)
if !ok {
return
}
ch.stdout.write(packet)
case msgChannelExtendedData:
if len(packet) < 13 {
// malformed data packet
return
}
remoteId := binary.BigEndian.Uint32(packet[1:5])
datatype := binary.BigEndian.Uint32(packet[5:9])
length := binary.BigEndian.Uint32(packet[9:13])
packet = packet[13:]
if length != uint32(len(packet)) {
return
}
// RFC 4254 5.2 defines data_type_code 1 to be data destined
// for stderr on interactive sessions. Other data types are
// silently discarded.
if datatype == 1 {
ch, ok := c.getChan(remoteId)
if !ok {
return
}
ch.stderr.write(packet)
}
default:
decoded, err := decode(packet)
if err != nil {
if _, ok := err.(UnexpectedMessageError); ok {
fmt.Printf("mainLoop: unexpected message: %v\n", err)
continue
}
return
}
switch msg := decoded.(type) {
case *channelOpenMsg:
c.handleChanOpen(msg)
case *channelOpenConfirmMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.msg <- msg
case *channelOpenFailureMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.msg <- msg
case *channelCloseMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.Close()
close(ch.msg)
c.chanList.remove(msg.PeersId)
case *channelEOFMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.stdout.eof()
// RFC 4254 is mute on how EOF affects dataExt messages but
// it is logical to signal EOF at the same time.
ch.stderr.eof()
case *channelRequestSuccessMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.msg <- msg
case *channelRequestFailureMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.msg <- msg
case *channelRequestMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
ch.msg <- msg
case *windowAdjustMsg:
ch, ok := c.getChan(msg.PeersId)
if !ok {
return
}
if !ch.remoteWin.add(msg.AdditionalBytes) {
// invalid window update
return
}
case *globalRequestMsg:
// This handles keepalive messages and matches
// the behaviour of OpenSSH.
if msg.WantReply {
c.transport.writePacket(marshal(msgRequestFailure, globalRequestFailureMsg{}))
}
case *globalRequestSuccessMsg, *globalRequestFailureMsg:
c.globalRequest.response <- msg
case *disconnectMsg:
return
default:
fmt.Printf("mainLoop: unhandled message %T: %v\n", msg, msg)
}
}
}
}
// Handle channel open messages from the remote side.
func (c *ClientConn) handleChanOpen(msg *channelOpenMsg) {
if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 {
c.sendConnectionFailed(msg.PeersId)
}
switch msg.ChanType {
case "forwarded-tcpip":
laddr, rest, ok := parseTCPAddr(msg.TypeSpecificData)
if !ok {
// invalid request
c.sendConnectionFailed(msg.PeersId)
return
}
l, ok := c.forwardList.lookup(*laddr)
if !ok {
// TODO: print on a more structured log.
fmt.Println("could not find forward list entry for", laddr)
// Section 7.2, implementations MUST reject spurious incoming
// connections.
c.sendConnectionFailed(msg.PeersId)
return
}
raddr, rest, ok := parseTCPAddr(rest)
if !ok {
// invalid request
c.sendConnectionFailed(msg.PeersId)
return
}
ch := c.newChan(c.transport)
ch.remoteId = msg.PeersId
ch.remoteWin.add(msg.PeersWindow)
ch.maxPacket = msg.MaxPacketSize
m := channelOpenConfirmMsg{
PeersId: ch.remoteId,
MyId: ch.localId,
MyWindow: channelWindowSize,
MaxPacketSize: channelMaxPacketSize,
}
c.transport.writePacket(marshal(msgChannelOpenConfirm, m))
l <- forward{ch, raddr}
default:
// unknown channel type
m := channelOpenFailureMsg{
PeersId: msg.PeersId,
Reason: UnknownChannelType,
Message: fmt.Sprintf("unknown channel type: %v", msg.ChanType),
Language: "en_US.UTF-8",
}
c.transport.writePacket(marshal(msgChannelOpenFailure, m))
}
}
// sendGlobalRequest sends a global request message as specified
// in RFC4254 section 4. To correctly synchronise messages, a lock
// is held internally until a response is returned.
func (c *ClientConn) sendGlobalRequest(m interface{}) (*globalRequestSuccessMsg, error) {
c.globalRequest.Lock()
defer c.globalRequest.Unlock()
if err := c.transport.writePacket(marshal(msgGlobalRequest, m)); err != nil {
return nil, err
}
r := <-c.globalRequest.response
if r, ok := r.(*globalRequestSuccessMsg); ok {
return r, nil
}
return nil, errors.New("request failed")
}
// sendConnectionFailed rejects an incoming channel identified
// by remoteId.
func (c *ClientConn) sendConnectionFailed(remoteId uint32) error {
m := channelOpenFailureMsg{
PeersId: remoteId,
Reason: ConnectionFailed,
Message: "invalid request",
Language: "en_US.UTF-8",
}
return c.transport.writePacket(marshal(msgChannelOpenFailure, m))
}
// parseTCPAddr parses the originating address from the remote into a *net.TCPAddr.
// RFC 4254 section 7.2 is mute on what to do if parsing fails but the forwardlist
// requires a valid *net.TCPAddr to operate, so we enforce that restriction here.
func parseTCPAddr(b []byte) (*net.TCPAddr, []byte, bool) {
addr, b, ok := parseString(b)
if !ok {
return nil, b, false
}
port, b, ok := parseUint32(b)
if !ok {
return nil, b, false
}
ip := net.ParseIP(string(addr))
if ip == nil {
return nil, b, false
}
return &net.TCPAddr{IP: ip, Port: int(port)}, b, true
}
// Dial connects to the given network address using net.Dial and
// then initiates a SSH handshake, returning the resulting client connection.
func Dial(network, addr string, config *ClientConfig) (*ClientConn, error) {
conn, err := net.Dial(network, addr)
if err != nil {
return nil, err
}
return clientWithAddress(conn, addr, config)
}
// A ClientConfig structure is used to configure a ClientConn. After one has
// been passed to an SSH function it must not be modified.
type ClientConfig struct {
// Rand provides the source of entropy for key exchange. If Rand is
// nil, the cryptographic random reader in package crypto/rand will
// be used.
Rand io.Reader
// The username to authenticate.
User string
// A slice of ClientAuth methods. Only the first instance
// of a particular RFC 4252 method will be used during authentication.
Auth []ClientAuth
// HostKeyChecker, if not nil, is called during the cryptographic
// handshake to validate the server's host key. A nil HostKeyChecker
// implies that all host keys are accepted.
HostKeyChecker HostKeyChecker
// Cryptographic-related configuration.
Crypto CryptoConfig
// The identification string that will be used for the connection.
// If empty, a reasonable default is used.
ClientVersion string
}
func (c *ClientConfig) rand() io.Reader {
if c.Rand == nil {
return rand.Reader
}
return c.Rand
}
// Thread safe channel list.
type chanList struct {
// protects concurrent access to chans
sync.Mutex
// chans are indexed by the local id of the channel, clientChan.localId.
// The PeersId value of messages received by ClientConn.mainLoop is
// used to locate the right local clientChan in this slice.
chans []*clientChan
}
// Allocate a new ClientChan with the next avail local id.
func (c *chanList) newChan(p packetConn) *clientChan {
c.Lock()
defer c.Unlock()
for i := range c.chans {
if c.chans[i] == nil {
ch := newClientChan(p, uint32(i))
c.chans[i] = ch
return ch
}
}
i := len(c.chans)
ch := newClientChan(p, uint32(i))
c.chans = append(c.chans, ch)
return ch
}
func (c *chanList) getChan(id uint32) (*clientChan, bool) {
c.Lock()
defer c.Unlock()
if id >= uint32(len(c.chans)) {
return nil, false
}
return c.chans[id], true
}
func (c *chanList) remove(id uint32) {
c.Lock()
defer c.Unlock()
c.chans[id] = nil
}
func (c *chanList) closeAll() {
c.Lock()
defer c.Unlock()
for _, ch := range c.chans {
if ch == nil {
continue
}
ch.Close()
close(ch.msg)
}
}

509
vendor/code.google.com/p/go.crypto/ssh/client_auth.go generated vendored
View file

@ -1,509 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"errors"
"fmt"
"io"
"net"
)
// authenticate authenticates with the remote server. See RFC 4252.
func (c *ClientConn) authenticate() error {
// initiate user auth session
if err := c.transport.writePacket(marshal(msgServiceRequest, serviceRequestMsg{serviceUserAuth})); err != nil {
return err
}
packet, err := c.transport.readPacket()
if err != nil {
return err
}
var serviceAccept serviceAcceptMsg
if err := unmarshal(&serviceAccept, packet, msgServiceAccept); err != nil {
return err
}
// during the authentication phase the client first attempts the "none" method
// then any untried methods suggested by the server.
tried, remain := make(map[string]bool), make(map[string]bool)
for auth := ClientAuth(new(noneAuth)); auth != nil; {
ok, methods, err := auth.auth(c.transport.sessionID, c.config.User, c.transport, c.config.rand())
if err != nil {
return err
}
if ok {
// success
return nil
}
tried[auth.method()] = true
delete(remain, auth.method())
for _, meth := range methods {
if tried[meth] {
// if we've tried meth already, skip it.
continue
}
remain[meth] = true
}
auth = nil
for _, a := range c.config.Auth {
if remain[a.method()] {
auth = a
break
}
}
}
return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", keys(tried))
}
func keys(m map[string]bool) (s []string) {
for k := range m {
s = append(s, k)
}
return
}
// HostKeyChecker represents a database of known server host keys.
type HostKeyChecker interface {
// Check is called during the handshake to check server's
// public key for unexpected changes. The hostKey argument is
// in SSH wire format. It can be parsed using
// ssh.ParsePublicKey. The address before DNS resolution is
// passed in the addr argument, so the key can also be checked
// against the hostname.
Check(addr string, remote net.Addr, algorithm string, hostKey []byte) error
}
// A ClientAuth represents an instance of an RFC 4252 authentication method.
type ClientAuth interface {
// auth authenticates user over transport t.
// Returns true if authentication is successful.
// If authentication is not successful, a []string of alternative
// method names is returned.
auth(session []byte, user string, p packetConn, rand io.Reader) (bool, []string, error)
// method returns the RFC 4252 method name.
method() string
}
// "none" authentication, RFC 4252 section 5.2.
type noneAuth int
func (n *noneAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) {
if err := c.writePacket(marshal(msgUserAuthRequest, userAuthRequestMsg{
User: user,
Service: serviceSSH,
Method: "none",
})); err != nil {
return false, nil, err
}
return handleAuthResponse(c)
}
func (n *noneAuth) method() string {
return "none"
}
// "password" authentication, RFC 4252 Section 8.
type passwordAuth struct {
ClientPassword
}
func (p *passwordAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) {
type passwordAuthMsg struct {
User string
Service string
Method string
Reply bool
Password string
}
pw, err := p.Password(user)
if err != nil {
return false, nil, err
}
if err := c.writePacket(marshal(msgUserAuthRequest, passwordAuthMsg{
User: user,
Service: serviceSSH,
Method: "password",
Reply: false,
Password: pw,
})); err != nil {
return false, nil, err
}
return handleAuthResponse(c)
}
func (p *passwordAuth) method() string {
return "password"
}
// A ClientPassword implements access to a client's passwords.
type ClientPassword interface {
// Password returns the password to use for user.
Password(user string) (password string, err error)
}
// ClientAuthPassword returns a ClientAuth using password authentication.
func ClientAuthPassword(impl ClientPassword) ClientAuth {
return &passwordAuth{impl}
}
// ClientKeyring implements access to a client key ring.
type ClientKeyring interface {
// Key returns the i'th Publickey, or nil if no key exists at i.
Key(i int) (key PublicKey, err error)
// Sign returns a signature of the given data using the i'th key
// and the supplied random source.
Sign(i int, rand io.Reader, data []byte) (sig []byte, err error)
}
// "publickey" authentication, RFC 4252 Section 7.
type publickeyAuth struct {
ClientKeyring
}
type publickeyAuthMsg struct {
User string
Service string
Method string
// HasSig indicates to the receiver packet that the auth request is signed and
// should be used for authentication of the request.
HasSig bool
Algoname string
Pubkey string
// Sig is defined as []byte so marshal will exclude it during validateKey
Sig []byte `ssh:"rest"`
}
func (p *publickeyAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) {
// Authentication is performed in two stages. The first stage sends an
// enquiry to test if each key is acceptable to the remote. The second
// stage attempts to authenticate with the valid keys obtained in the
// first stage.
var index int
// a map of public keys to their index in the keyring
validKeys := make(map[int]PublicKey)
for {
key, err := p.Key(index)
if err != nil {
return false, nil, err
}
if key == nil {
// no more keys in the keyring
break
}
if ok, err := p.validateKey(key, user, c); ok {
validKeys[index] = key
} else {
if err != nil {
return false, nil, err
}
}
index++
}
// methods that may continue if this auth is not successful.
var methods []string
for i, key := range validKeys {
pubkey := MarshalPublicKey(key)
algoname := key.PublicKeyAlgo()
data := buildDataSignedForAuth(session, userAuthRequestMsg{
User: user,
Service: serviceSSH,
Method: p.method(),
}, []byte(algoname), pubkey)
sigBlob, err := p.Sign(i, rand, data)
if err != nil {
return false, nil, err
}
// manually wrap the serialized signature in a string
s := serializeSignature(key.PublicKeyAlgo(), sigBlob)
sig := make([]byte, stringLength(len(s)))
marshalString(sig, s)
msg := publickeyAuthMsg{
User: user,
Service: serviceSSH,
Method: p.method(),
HasSig: true,
Algoname: algoname,
Pubkey: string(pubkey),
Sig: sig,
}
p := marshal(msgUserAuthRequest, msg)
if err := c.writePacket(p); err != nil {
return false, nil, err
}
success, methods, err := handleAuthResponse(c)
if err != nil {
return false, nil, err
}
if success {
return success, methods, err
}
}
return false, methods, nil
}
// validateKey validates the key provided it is acceptable to the server.
func (p *publickeyAuth) validateKey(key PublicKey, user string, c packetConn) (bool, error) {
pubkey := MarshalPublicKey(key)
algoname := key.PublicKeyAlgo()
msg := publickeyAuthMsg{
User: user,
Service: serviceSSH,
Method: p.method(),
HasSig: false,
Algoname: algoname,
Pubkey: string(pubkey),
}
if err := c.writePacket(marshal(msgUserAuthRequest, msg)); err != nil {
return false, err
}
return p.confirmKeyAck(key, c)
}
func (p *publickeyAuth) confirmKeyAck(key PublicKey, c packetConn) (bool, error) {
pubkey := MarshalPublicKey(key)
algoname := key.PublicKeyAlgo()
for {
packet, err := c.readPacket()
if err != nil {
return false, err
}
switch packet[0] {
case msgUserAuthBanner:
// TODO(gpaul): add callback to present the banner to the user
case msgUserAuthPubKeyOk:
msg := userAuthPubKeyOkMsg{}
if err := unmarshal(&msg, packet, msgUserAuthPubKeyOk); err != nil {
return false, err
}
if msg.Algo != algoname || msg.PubKey != string(pubkey) {
return false, nil
}
return true, nil
case msgUserAuthFailure:
return false, nil
default:
return false, UnexpectedMessageError{msgUserAuthSuccess, packet[0]}
}
}
panic("unreachable")
}
func (p *publickeyAuth) method() string {
return "publickey"
}
// ClientAuthKeyring returns a ClientAuth using public key authentication.
func ClientAuthKeyring(impl ClientKeyring) ClientAuth {
return &publickeyAuth{impl}
}
// handleAuthResponse returns whether the preceding authentication request succeeded
// along with a list of remaining authentication methods to try next and
// an error if an unexpected response was received.
func handleAuthResponse(c packetConn) (bool, []string, error) {
for {
packet, err := c.readPacket()
if err != nil {
return false, nil, err
}
switch packet[0] {
case msgUserAuthBanner:
// TODO: add callback to present the banner to the user
case msgUserAuthFailure:
msg := userAuthFailureMsg{}
if err := unmarshal(&msg, packet, msgUserAuthFailure); err != nil {
return false, nil, err
}
return false, msg.Methods, nil
case msgUserAuthSuccess:
return true, nil, nil
case msgDisconnect:
return false, nil, io.EOF
default:
return false, nil, UnexpectedMessageError{msgUserAuthSuccess, packet[0]}
}
}
panic("unreachable")
}
// ClientAuthAgent returns a ClientAuth using public key authentication via
// an agent.
func ClientAuthAgent(agent *AgentClient) ClientAuth {
return ClientAuthKeyring(&agentKeyring{agent: agent})
}
// agentKeyring implements ClientKeyring.
type agentKeyring struct {
agent *AgentClient
keys []*AgentKey
}
func (kr *agentKeyring) Key(i int) (key PublicKey, err error) {
if kr.keys == nil {
if kr.keys, err = kr.agent.RequestIdentities(); err != nil {
return
}
}
if i >= len(kr.keys) {
return
}
return kr.keys[i].Key()
}
func (kr *agentKeyring) Sign(i int, rand io.Reader, data []byte) (sig []byte, err error) {
var key PublicKey
if key, err = kr.Key(i); err != nil {
return
}
if key == nil {
return nil, errors.New("ssh: key index out of range")
}
if sig, err = kr.agent.SignRequest(key, data); err != nil {
return
}
// Unmarshal the signature.
var ok bool
if _, sig, ok = parseString(sig); !ok {
return nil, errors.New("ssh: malformed signature response from agent")
}
if sig, _, ok = parseString(sig); !ok {
return nil, errors.New("ssh: malformed signature response from agent")
}
return sig, nil
}
// ClientKeyboardInteractive should prompt the user for the given
// questions.
type ClientKeyboardInteractive interface {
// Challenge should print the questions, optionally disabling
// echoing (eg. for passwords), and return all the answers.
// Challenge may be called multiple times in a single
// session. After successful authentication, the server may
// send a challenge with no questions, for which the user and
// instruction messages should be printed. RFC 4256 section
// 3.3 details how the UI should behave for both CLI and
// GUI environments.
Challenge(user, instruction string, questions []string, echos []bool) ([]string, error)
}
// ClientAuthKeyboardInteractive returns a ClientAuth using a
// prompt/response sequence controlled by the server.
func ClientAuthKeyboardInteractive(impl ClientKeyboardInteractive) ClientAuth {
return &keyboardInteractiveAuth{impl}
}
type keyboardInteractiveAuth struct {
ClientKeyboardInteractive
}
func (k *keyboardInteractiveAuth) method() string {
return "keyboard-interactive"
}
func (k *keyboardInteractiveAuth) auth(session []byte, user string, c packetConn, rand io.Reader) (bool, []string, error) {
type initiateMsg struct {
User string
Service string
Method string
Language string
Submethods string
}
if err := c.writePacket(marshal(msgUserAuthRequest, initiateMsg{
User: user,
Service: serviceSSH,
Method: "keyboard-interactive",
})); err != nil {
return false, nil, err
}
for {
packet, err := c.readPacket()
if err != nil {
return false, nil, err
}
// like handleAuthResponse, but with less options.
switch packet[0] {
case msgUserAuthBanner:
// TODO: Print banners during userauth.
continue
case msgUserAuthInfoRequest:
// OK
case msgUserAuthFailure:
var msg userAuthFailureMsg
if err := unmarshal(&msg, packet, msgUserAuthFailure); err != nil {
return false, nil, err
}
return false, msg.Methods, nil
case msgUserAuthSuccess:
return true, nil, nil
default:
return false, nil, UnexpectedMessageError{msgUserAuthInfoRequest, packet[0]}
}
var msg userAuthInfoRequestMsg
if err := unmarshal(&msg, packet, packet[0]); err != nil {
return false, nil, err
}
// Manually unpack the prompt/echo pairs.
rest := msg.Prompts
var prompts []string
var echos []bool
for i := 0; i < int(msg.NumPrompts); i++ {
prompt, r, ok := parseString(rest)
if !ok || len(r) == 0 {
return false, nil, errors.New("ssh: prompt format error")
}
prompts = append(prompts, string(prompt))
echos = append(echos, r[0] != 0)
rest = r[1:]
}
if len(rest) != 0 {
return false, nil, fmt.Errorf("ssh: junk following message %q", rest)
}
answers, err := k.Challenge(msg.User, msg.Instruction, prompts, echos)
if err != nil {
return false, nil, err
}
if len(answers) != len(prompts) {
return false, nil, errors.New("ssh: not enough answers from keyboard-interactive callback")
}
responseLength := 1 + 4
for _, a := range answers {
responseLength += stringLength(len(a))
}
serialized := make([]byte, responseLength)
p := serialized
p[0] = msgUserAuthInfoResponse
p = p[1:]
p = marshalUint32(p, uint32(len(answers)))
for _, a := range answers {
p = marshalString(p, []byte(a))
}
if err := c.writePacket(serialized); err != nil {
return false, nil, err
}
}
}

352
vendor/code.google.com/p/go.crypto/ssh/common.go generated vendored
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@ -1,352 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"crypto"
"fmt"
"sync"
_ "crypto/sha1"
_ "crypto/sha256"
_ "crypto/sha512"
)
// These are string constants in the SSH protocol.
const (
compressionNone = "none"
serviceUserAuth = "ssh-userauth"
serviceSSH = "ssh-connection"
)
var supportedKexAlgos = []string{
kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521,
kexAlgoDH14SHA1, kexAlgoDH1SHA1,
}
var supportedHostKeyAlgos = []string{
KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521,
KeyAlgoRSA, KeyAlgoDSA,
}
var supportedCompressions = []string{compressionNone}
// hashFuncs keeps the mapping of supported algorithms to their respective
// hashes needed for signature verification.
var hashFuncs = map[string]crypto.Hash{
KeyAlgoRSA: crypto.SHA1,
KeyAlgoDSA: crypto.SHA1,
KeyAlgoECDSA256: crypto.SHA256,
KeyAlgoECDSA384: crypto.SHA384,
KeyAlgoECDSA521: crypto.SHA512,
CertAlgoRSAv01: crypto.SHA1,
CertAlgoDSAv01: crypto.SHA1,
CertAlgoECDSA256v01: crypto.SHA256,
CertAlgoECDSA384v01: crypto.SHA384,
CertAlgoECDSA521v01: crypto.SHA512,
}
// UnexpectedMessageError results when the SSH message that we received didn't
// match what we wanted.
type UnexpectedMessageError struct {
expected, got uint8
}
func (u UnexpectedMessageError) Error() string {
return fmt.Sprintf("ssh: unexpected message type %d (expected %d)", u.got, u.expected)
}
// ParseError results from a malformed SSH message.
type ParseError struct {
msgType uint8
}
func (p ParseError) Error() string {
return fmt.Sprintf("ssh: parse error in message type %d", p.msgType)
}
func findCommonAlgorithm(clientAlgos []string, serverAlgos []string) (commonAlgo string, ok bool) {
for _, clientAlgo := range clientAlgos {
for _, serverAlgo := range serverAlgos {
if clientAlgo == serverAlgo {
return clientAlgo, true
}
}
}
return
}
func findCommonCipher(clientCiphers []string, serverCiphers []string) (commonCipher string, ok bool) {
for _, clientCipher := range clientCiphers {
for _, serverCipher := range serverCiphers {
// reject the cipher if we have no cipherModes definition
if clientCipher == serverCipher && cipherModes[clientCipher] != nil {
return clientCipher, true
}
}
}
return
}
type algorithms struct {
kex string
hostKey string
wCipher string
rCipher string
rMAC string
wMAC string
rCompression string
wCompression string
}
func findAgreedAlgorithms(clientKexInit, serverKexInit *kexInitMsg) (algs *algorithms) {
var ok bool
result := &algorithms{}
result.kex, ok = findCommonAlgorithm(clientKexInit.KexAlgos, serverKexInit.KexAlgos)
if !ok {
return
}
result.hostKey, ok = findCommonAlgorithm(clientKexInit.ServerHostKeyAlgos, serverKexInit.ServerHostKeyAlgos)
if !ok {
return
}
result.wCipher, ok = findCommonCipher(clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer)
if !ok {
return
}
result.rCipher, ok = findCommonCipher(clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient)
if !ok {
return
}
result.wMAC, ok = findCommonAlgorithm(clientKexInit.MACsClientServer, serverKexInit.MACsClientServer)
if !ok {
return
}
result.rMAC, ok = findCommonAlgorithm(clientKexInit.MACsServerClient, serverKexInit.MACsServerClient)
if !ok {
return
}
result.wCompression, ok = findCommonAlgorithm(clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer)
if !ok {
return
}
result.rCompression, ok = findCommonAlgorithm(clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient)
if !ok {
return
}
return result
}
// Cryptographic configuration common to both ServerConfig and ClientConfig.
type CryptoConfig struct {
// The allowed key exchanges algorithms. If unspecified then a
// default set of algorithms is used.
KeyExchanges []string
// The allowed cipher algorithms. If unspecified then DefaultCipherOrder is
// used.
Ciphers []string
// The allowed MAC algorithms. If unspecified then DefaultMACOrder is used.
MACs []string
}
func (c *CryptoConfig) ciphers() []string {
if c.Ciphers == nil {
return DefaultCipherOrder
}
return c.Ciphers
}
func (c *CryptoConfig) kexes() []string {
if c.KeyExchanges == nil {
return defaultKeyExchangeOrder
}
return c.KeyExchanges
}
func (c *CryptoConfig) macs() []string {
if c.MACs == nil {
return DefaultMACOrder
}
return c.MACs
}
// serialize a signed slice according to RFC 4254 6.6. The name should
// be a key type name, rather than a cert type name.
func serializeSignature(name string, sig []byte) []byte {
length := stringLength(len(name))
length += stringLength(len(sig))
ret := make([]byte, length)
r := marshalString(ret, []byte(name))
r = marshalString(r, sig)
return ret
}
// MarshalPublicKey serializes a supported key or certificate for use
// by the SSH wire protocol. It can be used for comparison with the
// pubkey argument of ServerConfig's PublicKeyCallback as well as for
// generating an authorized_keys or host_keys file.
func MarshalPublicKey(key PublicKey) []byte {
// See also RFC 4253 6.6.
algoname := key.PublicKeyAlgo()
blob := key.Marshal()
length := stringLength(len(algoname))
length += len(blob)
ret := make([]byte, length)
r := marshalString(ret, []byte(algoname))
copy(r, blob)
return ret
}
// pubAlgoToPrivAlgo returns the private key algorithm format name that
// corresponds to a given public key algorithm format name. For most
// public keys, the private key algorithm name is the same. For some
// situations, such as openssh certificates, the private key algorithm and
// public key algorithm names differ. This accounts for those situations.
func pubAlgoToPrivAlgo(pubAlgo string) string {
switch pubAlgo {
case CertAlgoRSAv01:
return KeyAlgoRSA
case CertAlgoDSAv01:
return KeyAlgoDSA
case CertAlgoECDSA256v01:
return KeyAlgoECDSA256
case CertAlgoECDSA384v01:
return KeyAlgoECDSA384
case CertAlgoECDSA521v01:
return KeyAlgoECDSA521
}
return pubAlgo
}
// buildDataSignedForAuth returns the data that is signed in order to prove
// possession of a private key. See RFC 4252, section 7.
func buildDataSignedForAuth(sessionId []byte, req userAuthRequestMsg, algo, pubKey []byte) []byte {
user := []byte(req.User)
service := []byte(req.Service)
method := []byte(req.Method)
length := stringLength(len(sessionId))
length += 1
length += stringLength(len(user))
length += stringLength(len(service))
length += stringLength(len(method))
length += 1
length += stringLength(len(algo))
length += stringLength(len(pubKey))
ret := make([]byte, length)
r := marshalString(ret, sessionId)
r[0] = msgUserAuthRequest
r = r[1:]
r = marshalString(r, user)
r = marshalString(r, service)
r = marshalString(r, method)
r[0] = 1
r = r[1:]
r = marshalString(r, algo)
r = marshalString(r, pubKey)
return ret
}
// safeString sanitises s according to RFC 4251, section 9.2.
// All control characters except tab, carriage return and newline are
// replaced by 0x20.
func safeString(s string) string {
out := []byte(s)
for i, c := range out {
if c < 0x20 && c != 0xd && c != 0xa && c != 0x9 {
out[i] = 0x20
}
}
return string(out)
}
func appendU16(buf []byte, n uint16) []byte {
return append(buf, byte(n>>8), byte(n))
}
func appendU32(buf []byte, n uint32) []byte {
return append(buf, byte(n>>24), byte(n>>16), byte(n>>8), byte(n))
}
func appendInt(buf []byte, n int) []byte {
return appendU32(buf, uint32(n))
}
func appendString(buf []byte, s string) []byte {
buf = appendU32(buf, uint32(len(s)))
buf = append(buf, s...)
return buf
}
func appendBool(buf []byte, b bool) []byte {
if b {
buf = append(buf, 1)
} else {
buf = append(buf, 0)
}
return buf
}
// newCond is a helper to hide the fact that there is no usable zero
// value for sync.Cond.
func newCond() *sync.Cond { return sync.NewCond(new(sync.Mutex)) }
// window represents the buffer available to clients
// wishing to write to a channel.
type window struct {
*sync.Cond
win uint32 // RFC 4254 5.2 says the window size can grow to 2^32-1
}
// add adds win to the amount of window available
// for consumers.
func (w *window) add(win uint32) bool {
// a zero sized window adjust is a noop.
if win == 0 {
return true
}
w.L.Lock()
if w.win+win < win {
w.L.Unlock()
return false
}
w.win += win
// It is unusual that multiple goroutines would be attempting to reserve
// window space, but not guaranteed. Use broadcast to notify all waiters
// that additional window is available.
w.Broadcast()
w.L.Unlock()
return true
}
// reserve reserves win from the available window capacity.
// If no capacity remains, reserve will block. reserve may
// return less than requested.
func (w *window) reserve(win uint32) uint32 {
w.L.Lock()
for w.win == 0 {
w.Wait()
}
if w.win < win {
win = w.win
}
w.win -= win
w.L.Unlock()
return win
}

19
vendor/code.google.com/p/go.crypto/ssh/doc.go generated vendored
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@ -1,19 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package ssh implements an SSH client and server.
SSH is a transport security protocol, an authentication protocol and a
family of application protocols. The most typical application level
protocol is a remote shell and this is specifically implemented. However,
the multiplexed nature of SSH is exposed to users that wish to support
others.
References:
[PROTOCOL.certkeys]: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.certkeys
[PROTOCOL.agent]: http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/PROTOCOL.agent
[SSH-PARAMETERS]: http://www.iana.org/assignments/ssh-parameters/ssh-parameters.xml#ssh-parameters-1
*/
package ssh

386
vendor/code.google.com/p/go.crypto/ssh/kex.go generated vendored
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@ -1,386 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"errors"
"io"
"math/big"
)
const (
kexAlgoDH1SHA1 = "diffie-hellman-group1-sha1"
kexAlgoDH14SHA1 = "diffie-hellman-group14-sha1"
kexAlgoECDH256 = "ecdh-sha2-nistp256"
kexAlgoECDH384 = "ecdh-sha2-nistp384"
kexAlgoECDH521 = "ecdh-sha2-nistp521"
)
// kexResult captures the outcome of a key exchange.
type kexResult struct {
// Session hash. See also RFC 4253, section 8.
H []byte
// Shared secret. See also RFC 4253, section 8.
K []byte
// Host key as hashed into H
HostKey []byte
// Signature of H
Signature []byte
// A cryptographic hash function that matches the security
// level of the key exchange algorithm. It is used for
// calculating H, and for deriving keys from H and K.
Hash crypto.Hash
// The session ID, which is the first H computed. This is used
// to signal data inside transport.
SessionID []byte
}
// handshakeMagics contains data that is always included in the
// session hash.
type handshakeMagics struct {
clientVersion, serverVersion []byte
clientKexInit, serverKexInit []byte
}
func (m *handshakeMagics) write(w io.Writer) {
writeString(w, m.clientVersion)
writeString(w, m.serverVersion)
writeString(w, m.clientKexInit)
writeString(w, m.serverKexInit)
}
// kexAlgorithm abstracts different key exchange algorithms.
type kexAlgorithm interface {
// Server runs server-side key agreement, signing the result
// with a hostkey.
Server(p packetConn, rand io.Reader, magics *handshakeMagics, s Signer) (*kexResult, error)
// Client runs the client-side key agreement. Caller is
// responsible for verifying the host key signature.
Client(p packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error)
}
// dhGroup is a multiplicative group suitable for implementing Diffie-Hellman key agreement.
type dhGroup struct {
g, p *big.Int
}
func (group *dhGroup) diffieHellman(theirPublic, myPrivate *big.Int) (*big.Int, error) {
if theirPublic.Sign() <= 0 || theirPublic.Cmp(group.p) >= 0 {
return nil, errors.New("ssh: DH parameter out of bounds")
}
return new(big.Int).Exp(theirPublic, myPrivate, group.p), nil
}
func (group *dhGroup) Client(c packetConn, randSource io.Reader, magics *handshakeMagics) (*kexResult, error) {
hashFunc := crypto.SHA1
x, err := rand.Int(randSource, group.p)
if err != nil {
return nil, err
}
X := new(big.Int).Exp(group.g, x, group.p)
kexDHInit := kexDHInitMsg{
X: X,
}
if err := c.writePacket(marshal(msgKexDHInit, kexDHInit)); err != nil {
return nil, err
}
packet, err := c.readPacket()
if err != nil {
return nil, err
}
var kexDHReply kexDHReplyMsg
if err = unmarshal(&kexDHReply, packet, msgKexDHReply); err != nil {
return nil, err
}
kInt, err := group.diffieHellman(kexDHReply.Y, x)
if err != nil {
return nil, err
}
h := hashFunc.New()
magics.write(h)
writeString(h, kexDHReply.HostKey)
writeInt(h, X)
writeInt(h, kexDHReply.Y)
K := make([]byte, intLength(kInt))
marshalInt(K, kInt)
h.Write(K)
return &kexResult{
H: h.Sum(nil),
K: K,
HostKey: kexDHReply.HostKey,
Signature: kexDHReply.Signature,
Hash: crypto.SHA1,
}, nil
}
func (group *dhGroup) Server(c packetConn, randSource io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) {
hashFunc := crypto.SHA1
packet, err := c.readPacket()
if err != nil {
return
}
var kexDHInit kexDHInitMsg
if err = unmarshal(&kexDHInit, packet, msgKexDHInit); err != nil {
return
}
y, err := rand.Int(randSource, group.p)
if err != nil {
return
}
Y := new(big.Int).Exp(group.g, y, group.p)
kInt, err := group.diffieHellman(kexDHInit.X, y)
if err != nil {
return nil, err
}
hostKeyBytes := MarshalPublicKey(priv.PublicKey())
h := hashFunc.New()
magics.write(h)
writeString(h, hostKeyBytes)
writeInt(h, kexDHInit.X)
writeInt(h, Y)
K := make([]byte, intLength(kInt))
marshalInt(K, kInt)
h.Write(K)
H := h.Sum(nil)
// H is already a hash, but the hostkey signing will apply its
// own key-specific hash algorithm.
sig, err := signAndMarshal(priv, randSource, H)
if err != nil {
return nil, err
}
kexDHReply := kexDHReplyMsg{
HostKey: hostKeyBytes,
Y: Y,
Signature: sig,
}
packet = marshal(msgKexDHReply, kexDHReply)
err = c.writePacket(packet)
return &kexResult{
H: H,
K: K,
HostKey: hostKeyBytes,
Signature: sig,
Hash: crypto.SHA1,
}, nil
}
// ecdh performs Elliptic Curve Diffie-Hellman key exchange as
// described in RFC 5656, section 4.
type ecdh struct {
curve elliptic.Curve
}
func (kex *ecdh) Client(c packetConn, rand io.Reader, magics *handshakeMagics) (*kexResult, error) {
ephKey, err := ecdsa.GenerateKey(kex.curve, rand)
if err != nil {
return nil, err
}
kexInit := kexECDHInitMsg{
ClientPubKey: elliptic.Marshal(kex.curve, ephKey.PublicKey.X, ephKey.PublicKey.Y),
}
serialized := marshal(msgKexECDHInit, kexInit)
if err := c.writePacket(serialized); err != nil {
return nil, err
}
packet, err := c.readPacket()
if err != nil {
return nil, err
}
var reply kexECDHReplyMsg
if err = unmarshal(&reply, packet, msgKexECDHReply); err != nil {
return nil, err
}
x, y, err := unmarshalECKey(kex.curve, reply.EphemeralPubKey)
if err != nil {
return nil, err
}
// generate shared secret
secret, _ := kex.curve.ScalarMult(x, y, ephKey.D.Bytes())
h := ecHash(kex.curve).New()
magics.write(h)
writeString(h, reply.HostKey)
writeString(h, kexInit.ClientPubKey)
writeString(h, reply.EphemeralPubKey)
K := make([]byte, intLength(secret))
marshalInt(K, secret)
h.Write(K)
return &kexResult{
H: h.Sum(nil),
K: K,
HostKey: reply.HostKey,
Signature: reply.Signature,
Hash: ecHash(kex.curve),
}, nil
}
// unmarshalECKey parses and checks an EC key.
func unmarshalECKey(curve elliptic.Curve, pubkey []byte) (x, y *big.Int, err error) {
x, y = elliptic.Unmarshal(curve, pubkey)
if x == nil {
return nil, nil, errors.New("ssh: elliptic.Unmarshal failure")
}
if !validateECPublicKey(curve, x, y) {
return nil, nil, errors.New("ssh: public key not on curve")
}
return x, y, nil
}
// validateECPublicKey checks that the point is a valid public key for
// the given curve. See [SEC1], 3.2.2
func validateECPublicKey(curve elliptic.Curve, x, y *big.Int) bool {
if x.Sign() == 0 && y.Sign() == 0 {
return false
}
if x.Cmp(curve.Params().P) >= 0 {
return false
}
if y.Cmp(curve.Params().P) >= 0 {
return false
}
if !curve.IsOnCurve(x, y) {
return false
}
// We don't check if N * PubKey == 0, since
//
// - the NIST curves have cofactor = 1, so this is implicit.
// (We don't foresee an implementation that supports non NIST
// curves)
//
// - for ephemeral keys, we don't need to worry about small
// subgroup attacks.
return true
}
func (kex *ecdh) Server(c packetConn, rand io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) {
packet, err := c.readPacket()
if err != nil {
return nil, err
}
var kexECDHInit kexECDHInitMsg
if err = unmarshal(&kexECDHInit, packet, msgKexECDHInit); err != nil {
return nil, err
}
clientX, clientY, err := unmarshalECKey(kex.curve, kexECDHInit.ClientPubKey)
if err != nil {
return nil, err
}
// We could cache this key across multiple users/multiple
// connection attempts, but the benefit is small. OpenSSH
// generates a new key for each incoming connection.
ephKey, err := ecdsa.GenerateKey(kex.curve, rand)
if err != nil {
return nil, err
}
hostKeyBytes := MarshalPublicKey(priv.PublicKey())
serializedEphKey := elliptic.Marshal(kex.curve, ephKey.PublicKey.X, ephKey.PublicKey.Y)
// generate shared secret
secret, _ := kex.curve.ScalarMult(clientX, clientY, ephKey.D.Bytes())
h := ecHash(kex.curve).New()
magics.write(h)
writeString(h, hostKeyBytes)
writeString(h, kexECDHInit.ClientPubKey)
writeString(h, serializedEphKey)
K := make([]byte, intLength(secret))
marshalInt(K, secret)
h.Write(K)
H := h.Sum(nil)
// H is already a hash, but the hostkey signing will apply its
// own key-specific hash algorithm.
sig, err := signAndMarshal(priv, rand, H)
if err != nil {
return nil, err
}
reply := kexECDHReplyMsg{
EphemeralPubKey: serializedEphKey,
HostKey: hostKeyBytes,
Signature: sig,
}
serialized := marshal(msgKexECDHReply, reply)
if err := c.writePacket(serialized); err != nil {
return nil, err
}
return &kexResult{
H: H,
K: K,
HostKey: reply.HostKey,
Signature: sig,
Hash: ecHash(kex.curve),
}, nil
}
var kexAlgoMap = map[string]kexAlgorithm{}
func init() {
// This is the group called diffie-hellman-group1-sha1 in RFC
// 4253 and Oakley Group 2 in RFC 2409.
p, _ := new(big.Int).SetString("FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF", 16)
kexAlgoMap[kexAlgoDH1SHA1] = &dhGroup{
g: new(big.Int).SetInt64(2),
p: p,
}
// This is the group called diffie-hellman-group14-sha1 in RFC
// 4253 and Oakley Group 14 in RFC 3526.
p, _ = new(big.Int).SetString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
kexAlgoMap[kexAlgoDH14SHA1] = &dhGroup{
g: new(big.Int).SetInt64(2),
p: p,
}
kexAlgoMap[kexAlgoECDH521] = &ecdh{elliptic.P521()}
kexAlgoMap[kexAlgoECDH384] = &ecdh{elliptic.P384()}
kexAlgoMap[kexAlgoECDH256] = &ecdh{elliptic.P256()}
}

609
vendor/code.google.com/p/go.crypto/ssh/keys.go generated vendored
View file

@ -1,609 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"bytes"
"crypto"
"crypto/dsa"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rsa"
"crypto/x509"
"encoding/asn1"
"encoding/base64"
"encoding/pem"
"errors"
"fmt"
"io"
"math/big"
)
// These constants represent the algorithm names for key types supported by this
// package.
const (
KeyAlgoRSA = "ssh-rsa"
KeyAlgoDSA = "ssh-dss"
KeyAlgoECDSA256 = "ecdsa-sha2-nistp256"
KeyAlgoECDSA384 = "ecdsa-sha2-nistp384"
KeyAlgoECDSA521 = "ecdsa-sha2-nistp521"
)
// parsePubKey parses a public key of the given algorithm.
// Use ParsePublicKey for keys with prepended algorithm.
func parsePubKey(in []byte, algo string) (pubKey PublicKey, rest []byte, ok bool) {
switch algo {
case KeyAlgoRSA:
return parseRSA(in)
case KeyAlgoDSA:
return parseDSA(in)
case KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521:
return parseECDSA(in)
case CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01:
return parseOpenSSHCertV01(in, algo)
}
return nil, nil, false
}
// parseAuthorizedKey parses a public key in OpenSSH authorized_keys format
// (see sshd(8) manual page) once the options and key type fields have been
// removed.
func parseAuthorizedKey(in []byte) (out PublicKey, comment string, ok bool) {
in = bytes.TrimSpace(in)
i := bytes.IndexAny(in, " \t")
if i == -1 {
i = len(in)
}
base64Key := in[:i]
key := make([]byte, base64.StdEncoding.DecodedLen(len(base64Key)))
n, err := base64.StdEncoding.Decode(key, base64Key)
if err != nil {
return
}
key = key[:n]
out, _, ok = ParsePublicKey(key)
if !ok {
return nil, "", false
}
comment = string(bytes.TrimSpace(in[i:]))
return
}
// ParseAuthorizedKeys parses a public key from an authorized_keys
// file used in OpenSSH according to the sshd(8) manual page.
func ParseAuthorizedKey(in []byte) (out PublicKey, comment string, options []string, rest []byte, ok bool) {
for len(in) > 0 {
end := bytes.IndexByte(in, '\n')
if end != -1 {
rest = in[end+1:]
in = in[:end]
} else {
rest = nil
}
end = bytes.IndexByte(in, '\r')
if end != -1 {
in = in[:end]
}
in = bytes.TrimSpace(in)
if len(in) == 0 || in[0] == '#' {
in = rest
continue
}
i := bytes.IndexAny(in, " \t")
if i == -1 {
in = rest
continue
}
if out, comment, ok = parseAuthorizedKey(in[i:]); ok {
return
}
// No key type recognised. Maybe there's an options field at
// the beginning.
var b byte
inQuote := false
var candidateOptions []string
optionStart := 0
for i, b = range in {
isEnd := !inQuote && (b == ' ' || b == '\t')
if (b == ',' && !inQuote) || isEnd {
if i-optionStart > 0 {
candidateOptions = append(candidateOptions, string(in[optionStart:i]))
}
optionStart = i + 1
}
if isEnd {
break
}
if b == '"' && (i == 0 || (i > 0 && in[i-1] != '\\')) {
inQuote = !inQuote
}
}
for i < len(in) && (in[i] == ' ' || in[i] == '\t') {
i++
}
if i == len(in) {
// Invalid line: unmatched quote
in = rest
continue
}
in = in[i:]
i = bytes.IndexAny(in, " \t")
if i == -1 {
in = rest
continue
}
if out, comment, ok = parseAuthorizedKey(in[i:]); ok {
options = candidateOptions
return
}
in = rest
continue
}
return
}
// ParsePublicKey parses an SSH public key formatted for use in
// the SSH wire protocol according to RFC 4253, section 6.6.
func ParsePublicKey(in []byte) (out PublicKey, rest []byte, ok bool) {
algo, in, ok := parseString(in)
if !ok {
return
}
return parsePubKey(in, string(algo))
}
// MarshalAuthorizedKey returns a byte stream suitable for inclusion
// in an OpenSSH authorized_keys file following the format specified
// in the sshd(8) manual page.
func MarshalAuthorizedKey(key PublicKey) []byte {
b := &bytes.Buffer{}
b.WriteString(key.PublicKeyAlgo())
b.WriteByte(' ')
e := base64.NewEncoder(base64.StdEncoding, b)
e.Write(MarshalPublicKey(key))
e.Close()
b.WriteByte('\n')
return b.Bytes()
}
// PublicKey is an abstraction of different types of public keys.
type PublicKey interface {
// PrivateKeyAlgo returns the name of the encryption system.
PrivateKeyAlgo() string
// PublicKeyAlgo returns the algorithm for the public key,
// which may be different from PrivateKeyAlgo for certificates.
PublicKeyAlgo() string
// Marshal returns the serialized key data in SSH wire format,
// without the name prefix. Callers should typically use
// MarshalPublicKey().
Marshal() []byte
// Verify that sig is a signature on the given data using this
// key. This function will hash the data appropriately first.
Verify(data []byte, sigBlob []byte) bool
}
// A Signer is can create signatures that verify against a public key.
type Signer interface {
// PublicKey returns an associated PublicKey instance.
PublicKey() PublicKey
// Sign returns raw signature for the given data. This method
// will apply the hash specified for the keytype to the data.
Sign(rand io.Reader, data []byte) ([]byte, error)
}
type rsaPublicKey rsa.PublicKey
func (r *rsaPublicKey) PrivateKeyAlgo() string {
return "ssh-rsa"
}
func (r *rsaPublicKey) PublicKeyAlgo() string {
return r.PrivateKeyAlgo()
}
// parseRSA parses an RSA key according to RFC 4253, section 6.6.
func parseRSA(in []byte) (out PublicKey, rest []byte, ok bool) {
key := new(rsa.PublicKey)
bigE, in, ok := parseInt(in)
if !ok || bigE.BitLen() > 24 {
return
}
e := bigE.Int64()
if e < 3 || e&1 == 0 {
ok = false
return
}
key.E = int(e)
if key.N, in, ok = parseInt(in); !ok {
return
}
ok = true
return (*rsaPublicKey)(key), in, ok
}
func (r *rsaPublicKey) Marshal() []byte {
// See RFC 4253, section 6.6.
e := new(big.Int).SetInt64(int64(r.E))
length := intLength(e)
length += intLength(r.N)
ret := make([]byte, length)
rest := marshalInt(ret, e)
marshalInt(rest, r.N)
return ret
}
func (r *rsaPublicKey) Verify(data []byte, sig []byte) bool {
h := crypto.SHA1.New()
h.Write(data)
digest := h.Sum(nil)
return rsa.VerifyPKCS1v15((*rsa.PublicKey)(r), crypto.SHA1, digest, sig) == nil
}
type rsaPrivateKey struct {
*rsa.PrivateKey
}
func (r *rsaPrivateKey) PublicKey() PublicKey {
return (*rsaPublicKey)(&r.PrivateKey.PublicKey)
}
func (r *rsaPrivateKey) Sign(rand io.Reader, data []byte) ([]byte, error) {
h := crypto.SHA1.New()
h.Write(data)
digest := h.Sum(nil)
return rsa.SignPKCS1v15(rand, r.PrivateKey, crypto.SHA1, digest)
}
type dsaPublicKey dsa.PublicKey
func (r *dsaPublicKey) PrivateKeyAlgo() string {
return "ssh-dss"
}
func (r *dsaPublicKey) PublicKeyAlgo() string {
return r.PrivateKeyAlgo()
}
// parseDSA parses an DSA key according to RFC 4253, section 6.6.
func parseDSA(in []byte) (out PublicKey, rest []byte, ok bool) {
key := new(dsa.PublicKey)
if key.P, in, ok = parseInt(in); !ok {
return
}
if key.Q, in, ok = parseInt(in); !ok {
return
}
if key.G, in, ok = parseInt(in); !ok {
return
}
if key.Y, in, ok = parseInt(in); !ok {
return
}
ok = true
return (*dsaPublicKey)(key), in, ok
}
func (r *dsaPublicKey) Marshal() []byte {
// See RFC 4253, section 6.6.
length := intLength(r.P)
length += intLength(r.Q)
length += intLength(r.G)
length += intLength(r.Y)
ret := make([]byte, length)
rest := marshalInt(ret, r.P)
rest = marshalInt(rest, r.Q)
rest = marshalInt(rest, r.G)
marshalInt(rest, r.Y)
return ret
}
func (k *dsaPublicKey) Verify(data []byte, sigBlob []byte) bool {
h := crypto.SHA1.New()
h.Write(data)
digest := h.Sum(nil)
// Per RFC 4253, section 6.6,
// The value for 'dss_signature_blob' is encoded as a string containing
// r, followed by s (which are 160-bit integers, without lengths or
// padding, unsigned, and in network byte order).
// For DSS purposes, sig.Blob should be exactly 40 bytes in length.
if len(sigBlob) != 40 {
return false
}
r := new(big.Int).SetBytes(sigBlob[:20])
s := new(big.Int).SetBytes(sigBlob[20:])
return dsa.Verify((*dsa.PublicKey)(k), digest, r, s)
}
type dsaPrivateKey struct {
*dsa.PrivateKey
}
func (k *dsaPrivateKey) PublicKey() PublicKey {
return (*dsaPublicKey)(&k.PrivateKey.PublicKey)
}
func (k *dsaPrivateKey) Sign(rand io.Reader, data []byte) ([]byte, error) {
h := crypto.SHA1.New()
h.Write(data)
digest := h.Sum(nil)
r, s, err := dsa.Sign(rand, k.PrivateKey, digest)
if err != nil {
return nil, err
}
sig := make([]byte, 40)
copy(sig[:20], r.Bytes())
copy(sig[20:], s.Bytes())
return sig, nil
}
type ecdsaPublicKey ecdsa.PublicKey
func (key *ecdsaPublicKey) PrivateKeyAlgo() string {
return "ecdsa-sha2-" + key.nistID()
}
func (key *ecdsaPublicKey) nistID() string {
switch key.Params().BitSize {
case 256:
return "nistp256"
case 384:
return "nistp384"
case 521:
return "nistp521"
}
panic("ssh: unsupported ecdsa key size")
}
func supportedEllipticCurve(curve elliptic.Curve) bool {
return (curve == elliptic.P256() || curve == elliptic.P384() || curve == elliptic.P521())
}
// ecHash returns the hash to match the given elliptic curve, see RFC
// 5656, section 6.2.1
func ecHash(curve elliptic.Curve) crypto.Hash {
bitSize := curve.Params().BitSize
switch {
case bitSize <= 256:
return crypto.SHA256
case bitSize <= 384:
return crypto.SHA384
}
return crypto.SHA512
}
func (key *ecdsaPublicKey) PublicKeyAlgo() string {
return key.PrivateKeyAlgo()
}
// parseECDSA parses an ECDSA key according to RFC 5656, section 3.1.
func parseECDSA(in []byte) (out PublicKey, rest []byte, ok bool) {
var identifier []byte
if identifier, in, ok = parseString(in); !ok {
return
}
key := new(ecdsa.PublicKey)
switch string(identifier) {
case "nistp256":
key.Curve = elliptic.P256()
case "nistp384":
key.Curve = elliptic.P384()
case "nistp521":
key.Curve = elliptic.P521()
default:
ok = false
return
}
var keyBytes []byte
if keyBytes, in, ok = parseString(in); !ok {
return
}
key.X, key.Y = elliptic.Unmarshal(key.Curve, keyBytes)
if key.X == nil || key.Y == nil {
ok = false
return
}
return (*ecdsaPublicKey)(key), in, ok
}
func (key *ecdsaPublicKey) Marshal() []byte {
// See RFC 5656, section 3.1.
keyBytes := elliptic.Marshal(key.Curve, key.X, key.Y)
ID := key.nistID()
length := stringLength(len(ID))
length += stringLength(len(keyBytes))
ret := make([]byte, length)
r := marshalString(ret, []byte(ID))
r = marshalString(r, keyBytes)
return ret
}
func (key *ecdsaPublicKey) Verify(data []byte, sigBlob []byte) bool {
h := ecHash(key.Curve).New()
h.Write(data)
digest := h.Sum(nil)
// Per RFC 5656, section 3.1.2,
// The ecdsa_signature_blob value has the following specific encoding:
// mpint r
// mpint s
r, rest, ok := parseInt(sigBlob)
if !ok {
return false
}
s, rest, ok := parseInt(rest)
if !ok || len(rest) > 0 {
return false
}
return ecdsa.Verify((*ecdsa.PublicKey)(key), digest, r, s)
}
type ecdsaPrivateKey struct {
*ecdsa.PrivateKey
}
func (k *ecdsaPrivateKey) PublicKey() PublicKey {
return (*ecdsaPublicKey)(&k.PrivateKey.PublicKey)
}
func (k *ecdsaPrivateKey) Sign(rand io.Reader, data []byte) ([]byte, error) {
h := ecHash(k.PrivateKey.PublicKey.Curve).New()
h.Write(data)
digest := h.Sum(nil)
r, s, err := ecdsa.Sign(rand, k.PrivateKey, digest)
if err != nil {
return nil, err
}
sig := make([]byte, intLength(r)+intLength(s))
rest := marshalInt(sig, r)
marshalInt(rest, s)
return sig, nil
}
// NewPrivateKey takes a pointer to rsa, dsa or ecdsa PrivateKey
// returns a corresponding Signer instance. EC keys should use P256,
// P384 or P521.
func NewSignerFromKey(k interface{}) (Signer, error) {
var sshKey Signer
switch t := k.(type) {
case *rsa.PrivateKey:
sshKey = &rsaPrivateKey{t}
case *dsa.PrivateKey:
sshKey = &dsaPrivateKey{t}
case *ecdsa.PrivateKey:
if !supportedEllipticCurve(t.Curve) {
return nil, errors.New("ssh: only P256, P384 and P521 EC keys are supported.")
}
sshKey = &ecdsaPrivateKey{t}
default:
return nil, fmt.Errorf("ssh: unsupported key type %T", k)
}
return sshKey, nil
}
// NewPublicKey takes a pointer to rsa, dsa or ecdsa PublicKey
// and returns a corresponding ssh PublicKey instance. EC keys should use P256, P384 or P521.
func NewPublicKey(k interface{}) (PublicKey, error) {
var sshKey PublicKey
switch t := k.(type) {
case *rsa.PublicKey:
sshKey = (*rsaPublicKey)(t)
case *ecdsa.PublicKey:
if !supportedEllipticCurve(t.Curve) {
return nil, errors.New("ssh: only P256, P384 and P521 EC keys are supported.")
}
sshKey = (*ecdsaPublicKey)(t)
case *dsa.PublicKey:
sshKey = (*dsaPublicKey)(t)
default:
return nil, fmt.Errorf("ssh: unsupported key type %T", k)
}
return sshKey, nil
}
// ParsePublicKey parses a PEM encoded private key. It supports
// PKCS#1, RSA, DSA and ECDSA private keys.
func ParsePrivateKey(pemBytes []byte) (Signer, error) {
block, _ := pem.Decode(pemBytes)
if block == nil {
return nil, errors.New("ssh: no key found")
}
var rawkey interface{}
switch block.Type {
case "RSA PRIVATE KEY":
rsa, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
return nil, err
}
rawkey = rsa
case "EC PRIVATE KEY":
ec, err := x509.ParseECPrivateKey(block.Bytes)
if err != nil {
return nil, err
}
rawkey = ec
case "DSA PRIVATE KEY":
ec, err := parseDSAPrivate(block.Bytes)
if err != nil {
return nil, err
}
rawkey = ec
default:
return nil, fmt.Errorf("ssh: unsupported key type %q", block.Type)
}
return NewSignerFromKey(rawkey)
}
// parseDSAPrivate parses a DSA key in ASN.1 DER encoding, as
// documented in the OpenSSL DSA manpage.
// TODO(hanwen): move this in to crypto/x509 after the Go 1.2 freeze.
func parseDSAPrivate(p []byte) (*dsa.PrivateKey, error) {
k := struct {
Version int
P *big.Int
Q *big.Int
G *big.Int
Priv *big.Int
Pub *big.Int
}{}
rest, err := asn1.Unmarshal(p, &k)
if err != nil {
return nil, errors.New("ssh: failed to parse DSA key: " + err.Error())
}
if len(rest) > 0 {
return nil, errors.New("ssh: garbage after DSA key")
}
return &dsa.PrivateKey{
PublicKey: dsa.PublicKey{
Parameters: dsa.Parameters{
P: k.P,
Q: k.Q,
G: k.G,
},
Y: k.Priv,
},
X: k.Pub,
}, nil
}

58
vendor/code.google.com/p/go.crypto/ssh/mac.go generated vendored
View file

@ -1,58 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
// Message authentication support
import (
"crypto/hmac"
"crypto/sha1"
"hash"
)
type macMode struct {
keySize int
new func(key []byte) hash.Hash
}
// truncatingMAC wraps around a hash.Hash and truncates the output digest to
// a given size.
type truncatingMAC struct {
length int
hmac hash.Hash
}
func (t truncatingMAC) Write(data []byte) (int, error) {
return t.hmac.Write(data)
}
func (t truncatingMAC) Sum(in []byte) []byte {
out := t.hmac.Sum(in)
return out[:len(in)+t.length]
}
func (t truncatingMAC) Reset() {
t.hmac.Reset()
}
func (t truncatingMAC) Size() int {
return t.length
}
func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() }
// Specifies a default set of MAC algorithms and a preference order.
// This is based on RFC 4253, section 6.4, with the removal of the
// hmac-md5 variants as they have reached the end of their useful life.
var DefaultMACOrder = []string{"hmac-sha1", "hmac-sha1-96"}
var macModes = map[string]*macMode{
"hmac-sha1": {20, func(key []byte) hash.Hash {
return hmac.New(sha1.New, key)
}},
"hmac-sha1-96": {20, func(key []byte) hash.Hash {
return truncatingMAC{12, hmac.New(sha1.New, key)}
}},
}

659
vendor/code.google.com/p/go.crypto/ssh/messages.go generated vendored
View file

@ -1,659 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"bytes"
"encoding/binary"
"io"
"math/big"
"reflect"
)
// These are SSH message type numbers. They are scattered around several
// documents but many were taken from [SSH-PARAMETERS].
const (
msgDisconnect = 1
msgIgnore = 2
msgUnimplemented = 3
msgDebug = 4
msgServiceRequest = 5
msgServiceAccept = 6
msgKexInit = 20
msgNewKeys = 21
// Diffie-Helman
msgKexDHInit = 30
msgKexDHReply = 31
msgKexECDHInit = 30
msgKexECDHReply = 31
// Standard authentication messages
msgUserAuthRequest = 50
msgUserAuthFailure = 51
msgUserAuthSuccess = 52
msgUserAuthBanner = 53
msgUserAuthPubKeyOk = 60
// Method specific messages
msgUserAuthInfoRequest = 60
msgUserAuthInfoResponse = 61
msgGlobalRequest = 80
msgRequestSuccess = 81
msgRequestFailure = 82
// Channel manipulation
msgChannelOpen = 90
msgChannelOpenConfirm = 91
msgChannelOpenFailure = 92
msgChannelWindowAdjust = 93
msgChannelData = 94
msgChannelExtendedData = 95
msgChannelEOF = 96
msgChannelClose = 97
msgChannelRequest = 98
msgChannelSuccess = 99
msgChannelFailure = 100
)
// SSH messages:
//
// These structures mirror the wire format of the corresponding SSH messages.
// They are marshaled using reflection with the marshal and unmarshal functions
// in this file. The only wrinkle is that a final member of type []byte with a
// ssh tag of "rest" receives the remainder of a packet when unmarshaling.
// See RFC 4253, section 11.1.
type disconnectMsg struct {
Reason uint32
Message string
Language string
}
// See RFC 4253, section 7.1.
type kexInitMsg struct {
Cookie [16]byte
KexAlgos []string
ServerHostKeyAlgos []string
CiphersClientServer []string
CiphersServerClient []string
MACsClientServer []string
MACsServerClient []string
CompressionClientServer []string
CompressionServerClient []string
LanguagesClientServer []string
LanguagesServerClient []string
FirstKexFollows bool
Reserved uint32
}
// See RFC 4253, section 8.
type kexDHInitMsg struct {
X *big.Int
}
type kexECDHInitMsg struct {
ClientPubKey []byte
}
type kexECDHReplyMsg struct {
HostKey []byte
EphemeralPubKey []byte
Signature []byte
}
type kexDHReplyMsg struct {
HostKey []byte
Y *big.Int
Signature []byte
}
// See RFC 4253, section 10.
type serviceRequestMsg struct {
Service string
}
// See RFC 4253, section 10.
type serviceAcceptMsg struct {
Service string
}
// See RFC 4252, section 5.
type userAuthRequestMsg struct {
User string
Service string
Method string
Payload []byte `ssh:"rest"`
}
// See RFC 4252, section 5.1
type userAuthFailureMsg struct {
Methods []string
PartialSuccess bool
}
// See RFC 4256, section 3.2
type userAuthInfoRequestMsg struct {
User string
Instruction string
DeprecatedLanguage string
NumPrompts uint32
Prompts []byte `ssh:"rest"`
}
// See RFC 4254, section 5.1.
type channelOpenMsg struct {
ChanType string
PeersId uint32
PeersWindow uint32
MaxPacketSize uint32
TypeSpecificData []byte `ssh:"rest"`
}
// See RFC 4254, section 5.1.
type channelOpenConfirmMsg struct {
PeersId uint32
MyId uint32
MyWindow uint32
MaxPacketSize uint32
TypeSpecificData []byte `ssh:"rest"`
}
// See RFC 4254, section 5.1.
type channelOpenFailureMsg struct {
PeersId uint32
Reason RejectionReason
Message string
Language string
}
type channelRequestMsg struct {
PeersId uint32
Request string
WantReply bool
RequestSpecificData []byte `ssh:"rest"`
}
// See RFC 4254, section 5.4.
type channelRequestSuccessMsg struct {
PeersId uint32
}
// See RFC 4254, section 5.4.
type channelRequestFailureMsg struct {
PeersId uint32
}
// See RFC 4254, section 5.3
type channelCloseMsg struct {
PeersId uint32
}
// See RFC 4254, section 5.3
type channelEOFMsg struct {
PeersId uint32
}
// See RFC 4254, section 4
type globalRequestMsg struct {
Type string
WantReply bool
}
// See RFC 4254, section 4
type globalRequestSuccessMsg struct {
Data []byte `ssh:"rest"`
}
// See RFC 4254, section 4
type globalRequestFailureMsg struct {
Data []byte `ssh:"rest"`
}
// See RFC 4254, section 5.2
type windowAdjustMsg struct {
PeersId uint32
AdditionalBytes uint32
}
// See RFC 4252, section 7
type userAuthPubKeyOkMsg struct {
Algo string
PubKey string
}
// unmarshal parses the SSH wire data in packet into out using
// reflection. expectedType, if non-zero, is the SSH message type that
// the packet is expected to start with. unmarshal either returns nil
// on success, or a ParseError or UnexpectedMessageError on error.
func unmarshal(out interface{}, packet []byte, expectedType uint8) error {
if len(packet) == 0 {
return ParseError{expectedType}
}
if expectedType > 0 {
if packet[0] != expectedType {
return UnexpectedMessageError{expectedType, packet[0]}
}
packet = packet[1:]
}
v := reflect.ValueOf(out).Elem()
structType := v.Type()
var ok bool
for i := 0; i < v.NumField(); i++ {
field := v.Field(i)
t := field.Type()
switch t.Kind() {
case reflect.Bool:
if len(packet) < 1 {
return ParseError{expectedType}
}
field.SetBool(packet[0] != 0)
packet = packet[1:]
case reflect.Array:
if t.Elem().Kind() != reflect.Uint8 {
panic("array of non-uint8")
}
if len(packet) < t.Len() {
return ParseError{expectedType}
}
for j, n := 0, t.Len(); j < n; j++ {
field.Index(j).Set(reflect.ValueOf(packet[j]))
}
packet = packet[t.Len():]
case reflect.Uint32:
var u32 uint32
if u32, packet, ok = parseUint32(packet); !ok {
return ParseError{expectedType}
}
field.SetUint(uint64(u32))
case reflect.String:
var s []byte
if s, packet, ok = parseString(packet); !ok {
return ParseError{expectedType}
}
field.SetString(string(s))
case reflect.Slice:
switch t.Elem().Kind() {
case reflect.Uint8:
if structType.Field(i).Tag.Get("ssh") == "rest" {
field.Set(reflect.ValueOf(packet))
packet = nil
} else {
var s []byte
if s, packet, ok = parseString(packet); !ok {
return ParseError{expectedType}
}
field.Set(reflect.ValueOf(s))
}
case reflect.String:
var nl []string
if nl, packet, ok = parseNameList(packet); !ok {
return ParseError{expectedType}
}
field.Set(reflect.ValueOf(nl))
default:
panic("slice of unknown type")
}
case reflect.Ptr:
if t == bigIntType {
var n *big.Int
if n, packet, ok = parseInt(packet); !ok {
return ParseError{expectedType}
}
field.Set(reflect.ValueOf(n))
} else {
panic("pointer to unknown type")
}
default:
panic("unknown type")
}
}
if len(packet) != 0 {
return ParseError{expectedType}
}
return nil
}
// marshal serializes the message in msg. The given message type is
// prepended if it is non-zero.
func marshal(msgType uint8, msg interface{}) []byte {
out := make([]byte, 0, 64)
if msgType > 0 {
out = append(out, msgType)
}
v := reflect.ValueOf(msg)
for i, n := 0, v.NumField(); i < n; i++ {
field := v.Field(i)
switch t := field.Type(); t.Kind() {
case reflect.Bool:
var v uint8
if field.Bool() {
v = 1
}
out = append(out, v)
case reflect.Array:
if t.Elem().Kind() != reflect.Uint8 {
panic("array of non-uint8")
}
for j, l := 0, t.Len(); j < l; j++ {
out = append(out, uint8(field.Index(j).Uint()))
}
case reflect.Uint32:
out = appendU32(out, uint32(field.Uint()))
case reflect.String:
s := field.String()
out = appendInt(out, len(s))
out = append(out, s...)
case reflect.Slice:
switch t.Elem().Kind() {
case reflect.Uint8:
if v.Type().Field(i).Tag.Get("ssh") != "rest" {
out = appendInt(out, field.Len())
}
out = append(out, field.Bytes()...)
case reflect.String:
offset := len(out)
out = appendU32(out, 0)
if n := field.Len(); n > 0 {
for j := 0; j < n; j++ {
f := field.Index(j)
if j != 0 {
out = append(out, ',')
}
out = append(out, f.String()...)
}
// overwrite length value
binary.BigEndian.PutUint32(out[offset:], uint32(len(out)-offset-4))
}
default:
panic("slice of unknown type")
}
case reflect.Ptr:
if t == bigIntType {
var n *big.Int
nValue := reflect.ValueOf(&n)
nValue.Elem().Set(field)
needed := intLength(n)
oldLength := len(out)
if cap(out)-len(out) < needed {
newOut := make([]byte, len(out), 2*(len(out)+needed))
copy(newOut, out)
out = newOut
}
out = out[:oldLength+needed]
marshalInt(out[oldLength:], n)
} else {
panic("pointer to unknown type")
}
}
}
return out
}
var bigOne = big.NewInt(1)
func parseString(in []byte) (out, rest []byte, ok bool) {
if len(in) < 4 {
return
}
length := binary.BigEndian.Uint32(in)
if uint32(len(in)) < 4+length {
return
}
out = in[4 : 4+length]
rest = in[4+length:]
ok = true
return
}
var (
comma = []byte{','}
emptyNameList = []string{}
)
func parseNameList(in []byte) (out []string, rest []byte, ok bool) {
contents, rest, ok := parseString(in)
if !ok {
return
}
if len(contents) == 0 {
out = emptyNameList
return
}
parts := bytes.Split(contents, comma)
out = make([]string, len(parts))
for i, part := range parts {
out[i] = string(part)
}
return
}
func parseInt(in []byte) (out *big.Int, rest []byte, ok bool) {
contents, rest, ok := parseString(in)
if !ok {
return
}
out = new(big.Int)
if len(contents) > 0 && contents[0]&0x80 == 0x80 {
// This is a negative number
notBytes := make([]byte, len(contents))
for i := range notBytes {
notBytes[i] = ^contents[i]
}
out.SetBytes(notBytes)
out.Add(out, bigOne)
out.Neg(out)
} else {
// Positive number
out.SetBytes(contents)
}
ok = true
return
}
func parseUint32(in []byte) (uint32, []byte, bool) {
if len(in) < 4 {
return 0, nil, false
}
return binary.BigEndian.Uint32(in), in[4:], true
}
func parseUint64(in []byte) (uint64, []byte, bool) {
if len(in) < 8 {
return 0, nil, false
}
return binary.BigEndian.Uint64(in), in[8:], true
}
func nameListLength(namelist []string) int {
length := 4 /* uint32 length prefix */
for i, name := range namelist {
if i != 0 {
length++ /* comma */
}
length += len(name)
}
return length
}
func intLength(n *big.Int) int {
length := 4 /* length bytes */
if n.Sign() < 0 {
nMinus1 := new(big.Int).Neg(n)
nMinus1.Sub(nMinus1, bigOne)
bitLen := nMinus1.BitLen()
if bitLen%8 == 0 {
// The number will need 0xff padding
length++
}
length += (bitLen + 7) / 8
} else if n.Sign() == 0 {
// A zero is the zero length string
} else {
bitLen := n.BitLen()
if bitLen%8 == 0 {
// The number will need 0x00 padding
length++
}
length += (bitLen + 7) / 8
}
return length
}
func marshalUint32(to []byte, n uint32) []byte {
binary.BigEndian.PutUint32(to, n)
return to[4:]
}
func marshalUint64(to []byte, n uint64) []byte {
binary.BigEndian.PutUint64(to, n)
return to[8:]
}
func marshalInt(to []byte, n *big.Int) []byte {
lengthBytes := to
to = to[4:]
length := 0
if n.Sign() < 0 {
// A negative number has to be converted to two's-complement
// form. So we'll subtract 1 and invert. If the
// most-significant-bit isn't set then we'll need to pad the
// beginning with 0xff in order to keep the number negative.
nMinus1 := new(big.Int).Neg(n)
nMinus1.Sub(nMinus1, bigOne)
bytes := nMinus1.Bytes()
for i := range bytes {
bytes[i] ^= 0xff
}
if len(bytes) == 0 || bytes[0]&0x80 == 0 {
to[0] = 0xff
to = to[1:]
length++
}
nBytes := copy(to, bytes)
to = to[nBytes:]
length += nBytes
} else if n.Sign() == 0 {
// A zero is the zero length string
} else {
bytes := n.Bytes()
if len(bytes) > 0 && bytes[0]&0x80 != 0 {
// We'll have to pad this with a 0x00 in order to
// stop it looking like a negative number.
to[0] = 0
to = to[1:]
length++
}
nBytes := copy(to, bytes)
to = to[nBytes:]
length += nBytes
}
lengthBytes[0] = byte(length >> 24)
lengthBytes[1] = byte(length >> 16)
lengthBytes[2] = byte(length >> 8)
lengthBytes[3] = byte(length)
return to
}
func writeInt(w io.Writer, n *big.Int) {
length := intLength(n)
buf := make([]byte, length)
marshalInt(buf, n)
w.Write(buf)
}
func writeString(w io.Writer, s []byte) {
var lengthBytes [4]byte
lengthBytes[0] = byte(len(s) >> 24)
lengthBytes[1] = byte(len(s) >> 16)
lengthBytes[2] = byte(len(s) >> 8)
lengthBytes[3] = byte(len(s))
w.Write(lengthBytes[:])
w.Write(s)
}
func stringLength(n int) int {
return 4 + n
}
func marshalString(to []byte, s []byte) []byte {
to[0] = byte(len(s) >> 24)
to[1] = byte(len(s) >> 16)
to[2] = byte(len(s) >> 8)
to[3] = byte(len(s))
to = to[4:]
copy(to, s)
return to[len(s):]
}
var bigIntType = reflect.TypeOf((*big.Int)(nil))
// Decode a packet into its corresponding message.
func decode(packet []byte) (interface{}, error) {
var msg interface{}
switch packet[0] {
case msgDisconnect:
msg = new(disconnectMsg)
case msgServiceRequest:
msg = new(serviceRequestMsg)
case msgServiceAccept:
msg = new(serviceAcceptMsg)
case msgKexInit:
msg = new(kexInitMsg)
case msgKexDHInit:
msg = new(kexDHInitMsg)
case msgKexDHReply:
msg = new(kexDHReplyMsg)
case msgUserAuthRequest:
msg = new(userAuthRequestMsg)
case msgUserAuthFailure:
msg = new(userAuthFailureMsg)
case msgUserAuthPubKeyOk:
msg = new(userAuthPubKeyOkMsg)
case msgGlobalRequest:
msg = new(globalRequestMsg)
case msgRequestSuccess:
msg = new(globalRequestSuccessMsg)
case msgRequestFailure:
msg = new(globalRequestFailureMsg)
case msgChannelOpen:
msg = new(channelOpenMsg)
case msgChannelOpenConfirm:
msg = new(channelOpenConfirmMsg)
case msgChannelOpenFailure:
msg = new(channelOpenFailureMsg)
case msgChannelWindowAdjust:
msg = new(windowAdjustMsg)
case msgChannelEOF:
msg = new(channelEOFMsg)
case msgChannelClose:
msg = new(channelCloseMsg)
case msgChannelRequest:
msg = new(channelRequestMsg)
case msgChannelSuccess:
msg = new(channelRequestSuccessMsg)
case msgChannelFailure:
msg = new(channelRequestFailureMsg)
default:
return nil, UnexpectedMessageError{0, packet[0]}
}
if err := unmarshal(msg, packet, packet[0]); err != nil {
return nil, err
}
return msg, nil
}

692
vendor/code.google.com/p/go.crypto/ssh/server.go generated vendored
View file

@ -1,692 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"bytes"
"crypto/rand"
"encoding/binary"
"errors"
"fmt"
"io"
"net"
"sync"
_ "crypto/sha1"
)
type ServerConfig struct {
hostKeys []Signer
// Rand provides the source of entropy for key exchange. If Rand is
// nil, the cryptographic random reader in package crypto/rand will
// be used.
Rand io.Reader
// NoClientAuth is true if clients are allowed to connect without
// authenticating.
NoClientAuth bool
// PasswordCallback, if non-nil, is called when a user attempts to
// authenticate using a password. It may be called concurrently from
// several goroutines.
PasswordCallback func(conn *ServerConn, user, password string) bool
// PublicKeyCallback, if non-nil, is called when a client attempts public
// key authentication. It must return true if the given public key is
// valid for the given user.
PublicKeyCallback func(conn *ServerConn, user, algo string, pubkey []byte) bool
// KeyboardInteractiveCallback, if non-nil, is called when
// keyboard-interactive authentication is selected (RFC
// 4256). The client object's Challenge function should be
// used to query the user. The callback may offer multiple
// Challenge rounds. To avoid information leaks, the client
// should be presented a challenge even if the user is
// unknown.
KeyboardInteractiveCallback func(conn *ServerConn, user string, client ClientKeyboardInteractive) bool
// Cryptographic-related configuration.
Crypto CryptoConfig
}
func (c *ServerConfig) rand() io.Reader {
if c.Rand == nil {
return rand.Reader
}
return c.Rand
}
// AddHostKey adds a private key as a host key. If an existing host
// key exists with the same algorithm, it is overwritten.
func (s *ServerConfig) AddHostKey(key Signer) {
for i, k := range s.hostKeys {
if k.PublicKey().PublicKeyAlgo() == key.PublicKey().PublicKeyAlgo() {
s.hostKeys[i] = key
return
}
}
s.hostKeys = append(s.hostKeys, key)
}
// SetRSAPrivateKey sets the private key for a Server. A Server must have a
// private key configured in order to accept connections. The private key must
// be in the form of a PEM encoded, PKCS#1, RSA private key. The file "id_rsa"
// typically contains such a key.
func (s *ServerConfig) SetRSAPrivateKey(pemBytes []byte) error {
priv, err := ParsePrivateKey(pemBytes)
if err != nil {
return err
}
s.AddHostKey(priv)
return nil
}
// cachedPubKey contains the results of querying whether a public key is
// acceptable for a user. The cache only applies to a single ServerConn.
type cachedPubKey struct {
user, algo string
pubKey []byte
result bool
}
const maxCachedPubKeys = 16
// A ServerConn represents an incoming connection.
type ServerConn struct {
transport *transport
config *ServerConfig
channels map[uint32]*serverChan
nextChanId uint32
// lock protects err and channels.
lock sync.Mutex
err error
// cachedPubKeys contains the cache results of tests for public keys.
// Since SSH clients will query whether a public key is acceptable
// before attempting to authenticate with it, we end up with duplicate
// queries for public key validity.
cachedPubKeys []cachedPubKey
// User holds the successfully authenticated user name.
// It is empty if no authentication is used. It is populated before
// any authentication callback is called and not assigned to after that.
User string
// ClientVersion is the client's version, populated after
// Handshake is called. It should not be modified.
ClientVersion []byte
// Our version.
serverVersion []byte
}
// Server returns a new SSH server connection
// using c as the underlying transport.
func Server(c net.Conn, config *ServerConfig) *ServerConn {
return &ServerConn{
transport: newTransport(c, config.rand(), false /* not client */),
channels: make(map[uint32]*serverChan),
config: config,
}
}
// signAndMarshal signs the data with the appropriate algorithm,
// and serializes the result in SSH wire format.
func signAndMarshal(k Signer, rand io.Reader, data []byte) ([]byte, error) {
sig, err := k.Sign(rand, data)
if err != nil {
return nil, err
}
return serializeSignature(k.PublicKey().PrivateKeyAlgo(), sig), nil
}
// Close closes the connection.
func (s *ServerConn) Close() error { return s.transport.Close() }
// LocalAddr returns the local network address.
func (c *ServerConn) LocalAddr() net.Addr { return c.transport.LocalAddr() }
// RemoteAddr returns the remote network address.
func (c *ServerConn) RemoteAddr() net.Addr { return c.transport.RemoteAddr() }
// Handshake performs an SSH transport and client authentication on the given ServerConn.
func (s *ServerConn) Handshake() error {
var err error
s.serverVersion = []byte(packageVersion)
s.ClientVersion, err = exchangeVersions(s.transport.Conn, s.serverVersion)
if err != nil {
return err
}
if err := s.clientInitHandshake(nil, nil); err != nil {
return err
}
var packet []byte
if packet, err = s.transport.readPacket(); err != nil {
return err
}
var serviceRequest serviceRequestMsg
if err := unmarshal(&serviceRequest, packet, msgServiceRequest); err != nil {
return err
}
if serviceRequest.Service != serviceUserAuth {
return errors.New("ssh: requested service '" + serviceRequest.Service + "' before authenticating")
}
serviceAccept := serviceAcceptMsg{
Service: serviceUserAuth,
}
if err := s.transport.writePacket(marshal(msgServiceAccept, serviceAccept)); err != nil {
return err
}
if err := s.authenticate(); err != nil {
return err
}
return err
}
func (s *ServerConn) clientInitHandshake(clientKexInit *kexInitMsg, clientKexInitPacket []byte) (err error) {
serverKexInit := kexInitMsg{
KexAlgos: s.config.Crypto.kexes(),
CiphersClientServer: s.config.Crypto.ciphers(),
CiphersServerClient: s.config.Crypto.ciphers(),
MACsClientServer: s.config.Crypto.macs(),
MACsServerClient: s.config.Crypto.macs(),
CompressionClientServer: supportedCompressions,
CompressionServerClient: supportedCompressions,
}
for _, k := range s.config.hostKeys {
serverKexInit.ServerHostKeyAlgos = append(
serverKexInit.ServerHostKeyAlgos, k.PublicKey().PublicKeyAlgo())
}
serverKexInitPacket := marshal(msgKexInit, serverKexInit)
if err = s.transport.writePacket(serverKexInitPacket); err != nil {
return
}
if clientKexInitPacket == nil {
clientKexInit = new(kexInitMsg)
if clientKexInitPacket, err = s.transport.readPacket(); err != nil {
return
}
if err = unmarshal(clientKexInit, clientKexInitPacket, msgKexInit); err != nil {
return
}
}
algs := findAgreedAlgorithms(clientKexInit, &serverKexInit)
if algs == nil {
return errors.New("ssh: no common algorithms")
}
if clientKexInit.FirstKexFollows && algs.kex != clientKexInit.KexAlgos[0] {
// The client sent a Kex message for the wrong algorithm,
// which we have to ignore.
if _, err = s.transport.readPacket(); err != nil {
return
}
}
var hostKey Signer
for _, k := range s.config.hostKeys {
if algs.hostKey == k.PublicKey().PublicKeyAlgo() {
hostKey = k
}
}
kex, ok := kexAlgoMap[algs.kex]
if !ok {
return fmt.Errorf("ssh: unexpected key exchange algorithm %v", algs.kex)
}
magics := handshakeMagics{
serverVersion: s.serverVersion,
clientVersion: s.ClientVersion,
serverKexInit: marshal(msgKexInit, serverKexInit),
clientKexInit: clientKexInitPacket,
}
result, err := kex.Server(s.transport, s.config.rand(), &magics, hostKey)
if err != nil {
return err
}
if err = s.transport.prepareKeyChange(algs, result); err != nil {
return err
}
if err = s.transport.writePacket([]byte{msgNewKeys}); err != nil {
return
}
if packet, err := s.transport.readPacket(); err != nil {
return err
} else if packet[0] != msgNewKeys {
return UnexpectedMessageError{msgNewKeys, packet[0]}
}
return
}
func isAcceptableAlgo(algo string) bool {
switch algo {
case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521,
CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01:
return true
}
return false
}
// testPubKey returns true if the given public key is acceptable for the user.
func (s *ServerConn) testPubKey(user, algo string, pubKey []byte) bool {
if s.config.PublicKeyCallback == nil || !isAcceptableAlgo(algo) {
return false
}
for _, c := range s.cachedPubKeys {
if c.user == user && c.algo == algo && bytes.Equal(c.pubKey, pubKey) {
return c.result
}
}
result := s.config.PublicKeyCallback(s, user, algo, pubKey)
if len(s.cachedPubKeys) < maxCachedPubKeys {
c := cachedPubKey{
user: user,
algo: algo,
pubKey: make([]byte, len(pubKey)),
result: result,
}
copy(c.pubKey, pubKey)
s.cachedPubKeys = append(s.cachedPubKeys, c)
}
return result
}
func (s *ServerConn) authenticate() error {
var userAuthReq userAuthRequestMsg
var err error
var packet []byte
userAuthLoop:
for {
if packet, err = s.transport.readPacket(); err != nil {
return err
}
if err = unmarshal(&userAuthReq, packet, msgUserAuthRequest); err != nil {
return err
}
if userAuthReq.Service != serviceSSH {
return errors.New("ssh: client attempted to negotiate for unknown service: " + userAuthReq.Service)
}
switch userAuthReq.Method {
case "none":
if s.config.NoClientAuth {
break userAuthLoop
}
case "password":
if s.config.PasswordCallback == nil {
break
}
payload := userAuthReq.Payload
if len(payload) < 1 || payload[0] != 0 {
return ParseError{msgUserAuthRequest}
}
payload = payload[1:]
password, payload, ok := parseString(payload)
if !ok || len(payload) > 0 {
return ParseError{msgUserAuthRequest}
}
s.User = userAuthReq.User
if s.config.PasswordCallback(s, userAuthReq.User, string(password)) {
break userAuthLoop
}
case "keyboard-interactive":
if s.config.KeyboardInteractiveCallback == nil {
break
}
s.User = userAuthReq.User
if s.config.KeyboardInteractiveCallback(s, s.User, &sshClientKeyboardInteractive{s}) {
break userAuthLoop
}
case "publickey":
if s.config.PublicKeyCallback == nil {
break
}
payload := userAuthReq.Payload
if len(payload) < 1 {
return ParseError{msgUserAuthRequest}
}
isQuery := payload[0] == 0
payload = payload[1:]
algoBytes, payload, ok := parseString(payload)
if !ok {
return ParseError{msgUserAuthRequest}
}
algo := string(algoBytes)
pubKey, payload, ok := parseString(payload)
if !ok {
return ParseError{msgUserAuthRequest}
}
if isQuery {
// The client can query if the given public key
// would be okay.
if len(payload) > 0 {
return ParseError{msgUserAuthRequest}
}
if s.testPubKey(userAuthReq.User, algo, pubKey) {
okMsg := userAuthPubKeyOkMsg{
Algo: algo,
PubKey: string(pubKey),
}
if err = s.transport.writePacket(marshal(msgUserAuthPubKeyOk, okMsg)); err != nil {
return err
}
continue userAuthLoop
}
} else {
sig, payload, ok := parseSignature(payload)
if !ok || len(payload) > 0 {
return ParseError{msgUserAuthRequest}
}
// Ensure the public key algo and signature algo
// are supported. Compare the private key
// algorithm name that corresponds to algo with
// sig.Format. This is usually the same, but
// for certs, the names differ.
if !isAcceptableAlgo(algo) || !isAcceptableAlgo(sig.Format) || pubAlgoToPrivAlgo(algo) != sig.Format {
break
}
signedData := buildDataSignedForAuth(s.transport.sessionID, userAuthReq, algoBytes, pubKey)
key, _, ok := ParsePublicKey(pubKey)
if !ok {
return ParseError{msgUserAuthRequest}
}
if !key.Verify(signedData, sig.Blob) {
return ParseError{msgUserAuthRequest}
}
// TODO(jmpittman): Implement full validation for certificates.
s.User = userAuthReq.User
if s.testPubKey(userAuthReq.User, algo, pubKey) {
break userAuthLoop
}
}
}
var failureMsg userAuthFailureMsg
if s.config.PasswordCallback != nil {
failureMsg.Methods = append(failureMsg.Methods, "password")
}
if s.config.PublicKeyCallback != nil {
failureMsg.Methods = append(failureMsg.Methods, "publickey")
}
if s.config.KeyboardInteractiveCallback != nil {
failureMsg.Methods = append(failureMsg.Methods, "keyboard-interactive")
}
if len(failureMsg.Methods) == 0 {
return errors.New("ssh: no authentication methods configured but NoClientAuth is also false")
}
if err = s.transport.writePacket(marshal(msgUserAuthFailure, failureMsg)); err != nil {
return err
}
}
packet = []byte{msgUserAuthSuccess}
if err = s.transport.writePacket(packet); err != nil {
return err
}
return nil
}
// sshClientKeyboardInteractive implements a ClientKeyboardInteractive by
// asking the client on the other side of a ServerConn.
type sshClientKeyboardInteractive struct {
*ServerConn
}
func (c *sshClientKeyboardInteractive) Challenge(user, instruction string, questions []string, echos []bool) (answers []string, err error) {
if len(questions) != len(echos) {
return nil, errors.New("ssh: echos and questions must have equal length")
}
var prompts []byte
for i := range questions {
prompts = appendString(prompts, questions[i])
prompts = appendBool(prompts, echos[i])
}
if err := c.transport.writePacket(marshal(msgUserAuthInfoRequest, userAuthInfoRequestMsg{
Instruction: instruction,
NumPrompts: uint32(len(questions)),
Prompts: prompts,
})); err != nil {
return nil, err
}
packet, err := c.transport.readPacket()
if err != nil {
return nil, err
}
if packet[0] != msgUserAuthInfoResponse {
return nil, UnexpectedMessageError{msgUserAuthInfoResponse, packet[0]}
}
packet = packet[1:]
n, packet, ok := parseUint32(packet)
if !ok || int(n) != len(questions) {
return nil, &ParseError{msgUserAuthInfoResponse}
}
for i := uint32(0); i < n; i++ {
ans, rest, ok := parseString(packet)
if !ok {
return nil, &ParseError{msgUserAuthInfoResponse}
}
answers = append(answers, string(ans))
packet = rest
}
if len(packet) != 0 {
return nil, errors.New("ssh: junk at end of message")
}
return answers, nil
}
const defaultWindowSize = 32768
// Accept reads and processes messages on a ServerConn. It must be called
// in order to demultiplex messages to any resulting Channels.
func (s *ServerConn) Accept() (Channel, error) {
// TODO(dfc) s.lock is not held here so visibility of s.err is not guaranteed.
if s.err != nil {
return nil, s.err
}
for {
packet, err := s.transport.readPacket()
if err != nil {
s.lock.Lock()
s.err = err
s.lock.Unlock()
// TODO(dfc) s.lock protects s.channels but isn't being held here.
for _, c := range s.channels {
c.setDead()
c.handleData(nil)
}
return nil, err
}
switch packet[0] {
case msgChannelData:
if len(packet) < 9 {
// malformed data packet
return nil, ParseError{msgChannelData}
}
remoteId := binary.BigEndian.Uint32(packet[1:5])
s.lock.Lock()
c, ok := s.channels[remoteId]
if !ok {
s.lock.Unlock()
continue
}
if length := binary.BigEndian.Uint32(packet[5:9]); length > 0 {
packet = packet[9:]
c.handleData(packet[:length])
}
s.lock.Unlock()
default:
decoded, err := decode(packet)
if err != nil {
return nil, err
}
switch msg := decoded.(type) {
case *channelOpenMsg:
if msg.MaxPacketSize < minPacketLength || msg.MaxPacketSize > 1<<31 {
return nil, errors.New("ssh: invalid MaxPacketSize from peer")
}
c := &serverChan{
channel: channel{
packetConn: s.transport,
remoteId: msg.PeersId,
remoteWin: window{Cond: newCond()},
maxPacket: msg.MaxPacketSize,
},
chanType: msg.ChanType,
extraData: msg.TypeSpecificData,
myWindow: defaultWindowSize,
serverConn: s,
cond: newCond(),
pendingData: make([]byte, defaultWindowSize),
}
c.remoteWin.add(msg.PeersWindow)
s.lock.Lock()
c.localId = s.nextChanId
s.nextChanId++
s.channels[c.localId] = c
s.lock.Unlock()
return c, nil
case *channelRequestMsg:
s.lock.Lock()
c, ok := s.channels[msg.PeersId]
if !ok {
s.lock.Unlock()
continue
}
c.handlePacket(msg)
s.lock.Unlock()
case *windowAdjustMsg:
s.lock.Lock()
c, ok := s.channels[msg.PeersId]
if !ok {
s.lock.Unlock()
continue
}
c.handlePacket(msg)
s.lock.Unlock()
case *channelEOFMsg:
s.lock.Lock()
c, ok := s.channels[msg.PeersId]
if !ok {
s.lock.Unlock()
continue
}
c.handlePacket(msg)
s.lock.Unlock()
case *channelCloseMsg:
s.lock.Lock()
c, ok := s.channels[msg.PeersId]
if !ok {
s.lock.Unlock()
continue
}
c.handlePacket(msg)
s.lock.Unlock()
case *globalRequestMsg:
if msg.WantReply {
if err := s.transport.writePacket([]byte{msgRequestFailure}); err != nil {
return nil, err
}
}
case *kexInitMsg:
s.lock.Lock()
if err := s.clientInitHandshake(msg, packet); err != nil {
s.lock.Unlock()
return nil, err
}
s.lock.Unlock()
case *disconnectMsg:
return nil, io.EOF
default:
// Unknown message. Ignore.
}
}
}
panic("unreachable")
}
// A Listener implements a network listener (net.Listener) for SSH connections.
type Listener struct {
listener net.Listener
config *ServerConfig
}
// Addr returns the listener's network address.
func (l *Listener) Addr() net.Addr {
return l.listener.Addr()
}
// Close closes the listener.
func (l *Listener) Close() error {
return l.listener.Close()
}
// Accept waits for and returns the next incoming SSH connection.
// The receiver should call Handshake() in another goroutine
// to avoid blocking the accepter.
func (l *Listener) Accept() (*ServerConn, error) {
c, err := l.listener.Accept()
if err != nil {
return nil, err
}
return Server(c, l.config), nil
}
// Listen creates an SSH listener accepting connections on
// the given network address using net.Listen.
func Listen(network, addr string, config *ServerConfig) (*Listener, error) {
l, err := net.Listen(network, addr)
if err != nil {
return nil, err
}
return &Listener{
l,
config,
}, nil
}

81
vendor/code.google.com/p/go.crypto/ssh/server_terminal.go generated vendored
View file

@ -1,81 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
// A Terminal is capable of parsing and generating virtual terminal
// data from an SSH client.
type Terminal interface {
ReadLine() (line string, err error)
SetSize(x, y int)
Write([]byte) (int, error)
}
// ServerTerminal contains the state for running a terminal that is capable of
// reading lines of input.
type ServerTerminal struct {
Term Terminal
Channel Channel
}
// parsePtyRequest parses the payload of the pty-req message and extracts the
// dimensions of the terminal. See RFC 4254, section 6.2.
func parsePtyRequest(s []byte) (width, height int, ok bool) {
_, s, ok = parseString(s)
if !ok {
return
}
width32, s, ok := parseUint32(s)
if !ok {
return
}
height32, _, ok := parseUint32(s)
width = int(width32)
height = int(height32)
if width < 1 {
ok = false
}
if height < 1 {
ok = false
}
return
}
func (ss *ServerTerminal) Write(buf []byte) (n int, err error) {
return ss.Term.Write(buf)
}
// ReadLine returns a line of input from the terminal.
func (ss *ServerTerminal) ReadLine() (line string, err error) {
for {
if line, err = ss.Term.ReadLine(); err == nil {
return
}
req, ok := err.(ChannelRequest)
if !ok {
return
}
ok = false
switch req.Request {
case "pty-req":
var width, height int
width, height, ok = parsePtyRequest(req.Payload)
ss.Term.SetSize(width, height)
case "shell":
ok = true
if len(req.Payload) > 0 {
// We don't accept any commands, only the default shell.
ok = false
}
case "env":
ok = true
}
if req.WantReply {
ss.Channel.AckRequest(ok)
}
}
panic("unreachable")
}

626
vendor/code.google.com/p/go.crypto/ssh/session.go generated vendored
View file

@ -1,626 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
// Session implements an interactive session described in
// "RFC 4254, section 6".
import (
"bytes"
"errors"
"fmt"
"io"
"io/ioutil"
"sync"
)
type Signal string
// POSIX signals as listed in RFC 4254 Section 6.10.
const (
SIGABRT Signal = "ABRT"
SIGALRM Signal = "ALRM"
SIGFPE Signal = "FPE"
SIGHUP Signal = "HUP"
SIGILL Signal = "ILL"
SIGINT Signal = "INT"
SIGKILL Signal = "KILL"
SIGPIPE Signal = "PIPE"
SIGQUIT Signal = "QUIT"
SIGSEGV Signal = "SEGV"
SIGTERM Signal = "TERM"
SIGUSR1 Signal = "USR1"
SIGUSR2 Signal = "USR2"
)
var signals = map[Signal]int{
SIGABRT: 6,
SIGALRM: 14,
SIGFPE: 8,
SIGHUP: 1,
SIGILL: 4,
SIGINT: 2,
SIGKILL: 9,
SIGPIPE: 13,
SIGQUIT: 3,
SIGSEGV: 11,
SIGTERM: 15,
}
type TerminalModes map[uint8]uint32
// POSIX terminal mode flags as listed in RFC 4254 Section 8.
const (
tty_OP_END = 0
VINTR = 1
VQUIT = 2
VERASE = 3
VKILL = 4
VEOF = 5
VEOL = 6
VEOL2 = 7
VSTART = 8
VSTOP = 9
VSUSP = 10
VDSUSP = 11
VREPRINT = 12
VWERASE = 13
VLNEXT = 14
VFLUSH = 15
VSWTCH = 16
VSTATUS = 17
VDISCARD = 18
IGNPAR = 30
PARMRK = 31
INPCK = 32
ISTRIP = 33
INLCR = 34
IGNCR = 35
ICRNL = 36
IUCLC = 37
IXON = 38
IXANY = 39
IXOFF = 40
IMAXBEL = 41
ISIG = 50
ICANON = 51
XCASE = 52
ECHO = 53
ECHOE = 54
ECHOK = 55
ECHONL = 56
NOFLSH = 57
TOSTOP = 58
IEXTEN = 59
ECHOCTL = 60
ECHOKE = 61
PENDIN = 62
OPOST = 70
OLCUC = 71
ONLCR = 72
OCRNL = 73
ONOCR = 74
ONLRET = 75
CS7 = 90
CS8 = 91
PARENB = 92
PARODD = 93
TTY_OP_ISPEED = 128
TTY_OP_OSPEED = 129
)
// A Session represents a connection to a remote command or shell.
type Session struct {
// Stdin specifies the remote process's standard input.
// If Stdin is nil, the remote process reads from an empty
// bytes.Buffer.
Stdin io.Reader
// Stdout and Stderr specify the remote process's standard
// output and error.
//
// If either is nil, Run connects the corresponding file
// descriptor to an instance of ioutil.Discard. There is a
// fixed amount of buffering that is shared for the two streams.
// If either blocks it may eventually cause the remote
// command to block.
Stdout io.Writer
Stderr io.Writer
*clientChan // the channel backing this session
started bool // true once Start, Run or Shell is invoked.
copyFuncs []func() error
errors chan error // one send per copyFunc
// true if pipe method is active
stdinpipe, stdoutpipe, stderrpipe bool
}
// RFC 4254 Section 6.4.
type setenvRequest struct {
PeersId uint32
Request string
WantReply bool
Name string
Value string
}
// RFC 4254 Section 6.5.
type subsystemRequestMsg struct {
PeersId uint32
Request string
WantReply bool
Subsystem string
}
// Setenv sets an environment variable that will be applied to any
// command executed by Shell or Run.
func (s *Session) Setenv(name, value string) error {
req := setenvRequest{
PeersId: s.remoteId,
Request: "env",
WantReply: true,
Name: name,
Value: value,
}
if err := s.writePacket(marshal(msgChannelRequest, req)); err != nil {
return err
}
return s.waitForResponse()
}
// RFC 4254 Section 6.2.
type ptyRequestMsg struct {
PeersId uint32
Request string
WantReply bool
Term string
Columns uint32
Rows uint32
Width uint32
Height uint32
Modelist string
}
// RequestPty requests the association of a pty with the session on the remote host.
func (s *Session) RequestPty(term string, h, w int, termmodes TerminalModes) error {
var tm []byte
for k, v := range termmodes {
tm = append(tm, k)
tm = appendU32(tm, v)
}
tm = append(tm, tty_OP_END)
req := ptyRequestMsg{
PeersId: s.remoteId,
Request: "pty-req",
WantReply: true,
Term: term,
Columns: uint32(w),
Rows: uint32(h),
Width: uint32(w * 8),
Height: uint32(h * 8),
Modelist: string(tm),
}
if err := s.writePacket(marshal(msgChannelRequest, req)); err != nil {
return err
}
return s.waitForResponse()
}
// RequestSubsystem requests the association of a subsystem with the session on the remote host.
// A subsystem is a predefined command that runs in the background when the ssh session is initiated
func (s *Session) RequestSubsystem(subsystem string) error {
req := subsystemRequestMsg{
PeersId: s.remoteId,
Request: "subsystem",
WantReply: true,
Subsystem: subsystem,
}
if err := s.writePacket(marshal(msgChannelRequest, req)); err != nil {
return err
}
return s.waitForResponse()
}
// RFC 4254 Section 6.9.
type signalMsg struct {
PeersId uint32
Request string
WantReply bool
Signal string
}
// Signal sends the given signal to the remote process.
// sig is one of the SIG* constants.
func (s *Session) Signal(sig Signal) error {
req := signalMsg{
PeersId: s.remoteId,
Request: "signal",
WantReply: false,
Signal: string(sig),
}
return s.writePacket(marshal(msgChannelRequest, req))
}
// RFC 4254 Section 6.5.
type execMsg struct {
PeersId uint32
Request string
WantReply bool
Command string
}
// Start runs cmd on the remote host. Typically, the remote
// server passes cmd to the shell for interpretation.
// A Session only accepts one call to Run, Start or Shell.
func (s *Session) Start(cmd string) error {
if s.started {
return errors.New("ssh: session already started")
}
req := execMsg{
PeersId: s.remoteId,
Request: "exec",
WantReply: true,
Command: cmd,
}
if err := s.writePacket(marshal(msgChannelRequest, req)); err != nil {
return err
}
if err := s.waitForResponse(); err != nil {
return fmt.Errorf("ssh: could not execute command %s: %v", cmd, err)
}
return s.start()
}
// Run runs cmd on the remote host. Typically, the remote
// server passes cmd to the shell for interpretation.
// A Session only accepts one call to Run, Start, Shell, Output,
// or CombinedOutput.
//
// The returned error is nil if the command runs, has no problems
// copying stdin, stdout, and stderr, and exits with a zero exit
// status.
//
// If the command fails to run or doesn't complete successfully, the
// error is of type *ExitError. Other error types may be
// returned for I/O problems.
func (s *Session) Run(cmd string) error {
err := s.Start(cmd)
if err != nil {
return err
}
return s.Wait()
}
// Output runs cmd on the remote host and returns its standard output.
func (s *Session) Output(cmd string) ([]byte, error) {
if s.Stdout != nil {
return nil, errors.New("ssh: Stdout already set")
}
var b bytes.Buffer
s.Stdout = &b
err := s.Run(cmd)
return b.Bytes(), err
}
type singleWriter struct {
b bytes.Buffer
mu sync.Mutex
}
func (w *singleWriter) Write(p []byte) (int, error) {
w.mu.Lock()
defer w.mu.Unlock()
return w.b.Write(p)
}
// CombinedOutput runs cmd on the remote host and returns its combined
// standard output and standard error.
func (s *Session) CombinedOutput(cmd string) ([]byte, error) {
if s.Stdout != nil {
return nil, errors.New("ssh: Stdout already set")
}
if s.Stderr != nil {
return nil, errors.New("ssh: Stderr already set")
}
var b singleWriter
s.Stdout = &b
s.Stderr = &b
err := s.Run(cmd)
return b.b.Bytes(), err
}
// Shell starts a login shell on the remote host. A Session only
// accepts one call to Run, Start, Shell, Output, or CombinedOutput.
func (s *Session) Shell() error {
if s.started {
return errors.New("ssh: session already started")
}
req := channelRequestMsg{
PeersId: s.remoteId,
Request: "shell",
WantReply: true,
}
if err := s.writePacket(marshal(msgChannelRequest, req)); err != nil {
return err
}
if err := s.waitForResponse(); err != nil {
return fmt.Errorf("ssh: could not execute shell: %v", err)
}
return s.start()
}
func (s *Session) waitForResponse() error {
msg := <-s.msg
switch msg.(type) {
case *channelRequestSuccessMsg:
return nil
case *channelRequestFailureMsg:
return errors.New("ssh: request failed")
}
return fmt.Errorf("ssh: unknown packet %T received: %v", msg, msg)
}
func (s *Session) start() error {
s.started = true
type F func(*Session)
for _, setupFd := range []F{(*Session).stdin, (*Session).stdout, (*Session).stderr} {
setupFd(s)
}
s.errors = make(chan error, len(s.copyFuncs))
for _, fn := range s.copyFuncs {
go func(fn func() error) {
s.errors <- fn()
}(fn)
}
return nil
}
// Wait waits for the remote command to exit.
//
// The returned error is nil if the command runs, has no problems
// copying stdin, stdout, and stderr, and exits with a zero exit
// status.
//
// If the command fails to run or doesn't complete successfully, the
// error is of type *ExitError. Other error types may be
// returned for I/O problems.
func (s *Session) Wait() error {
if !s.started {
return errors.New("ssh: session not started")
}
waitErr := s.wait()
var copyError error
for _ = range s.copyFuncs {
if err := <-s.errors; err != nil && copyError == nil {
copyError = err
}
}
if waitErr != nil {
return waitErr
}
return copyError
}
func (s *Session) wait() error {
wm := Waitmsg{status: -1}
// Wait for msg channel to be closed before returning.
for msg := range s.msg {
switch msg := msg.(type) {
case *channelRequestMsg:
switch msg.Request {
case "exit-status":
d := msg.RequestSpecificData
wm.status = int(d[0])<<24 | int(d[1])<<16 | int(d[2])<<8 | int(d[3])
case "exit-signal":
signal, rest, ok := parseString(msg.RequestSpecificData)
if !ok {
return fmt.Errorf("wait: could not parse request data: %v", msg.RequestSpecificData)
}
wm.signal = safeString(string(signal))
// skip coreDumped bool
if len(rest) == 0 {
return fmt.Errorf("wait: could not parse request data: %v", msg.RequestSpecificData)
}
rest = rest[1:]
errmsg, rest, ok := parseString(rest)
if !ok {
return fmt.Errorf("wait: could not parse request data: %v", msg.RequestSpecificData)
}
wm.msg = safeString(string(errmsg))
lang, _, ok := parseString(rest)
if !ok {
return fmt.Errorf("wait: could not parse request data: %v", msg.RequestSpecificData)
}
wm.lang = safeString(string(lang))
default:
// This handles keepalives and matches
// OpenSSH's behaviour.
if msg.WantReply {
s.writePacket(marshal(msgChannelFailure, channelRequestFailureMsg{
PeersId: s.remoteId,
}))
}
}
default:
return fmt.Errorf("wait: unexpected packet %T received: %v", msg, msg)
}
}
if wm.status == 0 {
return nil
}
if wm.status == -1 {
// exit-status was never sent from server
if wm.signal == "" {
return errors.New("wait: remote command exited without exit status or exit signal")
}
wm.status = 128
if _, ok := signals[Signal(wm.signal)]; ok {
wm.status += signals[Signal(wm.signal)]
}
}
return &ExitError{wm}
}
func (s *Session) stdin() {
if s.stdinpipe {
return
}
if s.Stdin == nil {
s.Stdin = new(bytes.Buffer)
}
s.copyFuncs = append(s.copyFuncs, func() error {
_, err := io.Copy(s.clientChan.stdin, s.Stdin)
if err1 := s.clientChan.stdin.Close(); err == nil && err1 != io.EOF {
err = err1
}
return err
})
}
func (s *Session) stdout() {
if s.stdoutpipe {
return
}
if s.Stdout == nil {
s.Stdout = ioutil.Discard
}
s.copyFuncs = append(s.copyFuncs, func() error {
_, err := io.Copy(s.Stdout, s.clientChan.stdout)
return err
})
}
func (s *Session) stderr() {
if s.stderrpipe {
return
}
if s.Stderr == nil {
s.Stderr = ioutil.Discard
}
s.copyFuncs = append(s.copyFuncs, func() error {
_, err := io.Copy(s.Stderr, s.clientChan.stderr)
return err
})
}
// StdinPipe returns a pipe that will be connected to the
// remote command's standard input when the command starts.
func (s *Session) StdinPipe() (io.WriteCloser, error) {
if s.Stdin != nil {
return nil, errors.New("ssh: Stdin already set")
}
if s.started {
return nil, errors.New("ssh: StdinPipe after process started")
}
s.stdinpipe = true
return s.clientChan.stdin, nil
}
// StdoutPipe returns a pipe that will be connected to the
// remote command's standard output when the command starts.
// There is a fixed amount of buffering that is shared between
// stdout and stderr streams. If the StdoutPipe reader is
// not serviced fast enough it may eventually cause the
// remote command to block.
func (s *Session) StdoutPipe() (io.Reader, error) {
if s.Stdout != nil {
return nil, errors.New("ssh: Stdout already set")
}
if s.started {
return nil, errors.New("ssh: StdoutPipe after process started")
}
s.stdoutpipe = true
return s.clientChan.stdout, nil
}
// StderrPipe returns a pipe that will be connected to the
// remote command's standard error when the command starts.
// There is a fixed amount of buffering that is shared between
// stdout and stderr streams. If the StderrPipe reader is
// not serviced fast enough it may eventually cause the
// remote command to block.
func (s *Session) StderrPipe() (io.Reader, error) {
if s.Stderr != nil {
return nil, errors.New("ssh: Stderr already set")
}
if s.started {
return nil, errors.New("ssh: StderrPipe after process started")
}
s.stderrpipe = true
return s.clientChan.stderr, nil
}
// NewSession returns a new interactive session on the remote host.
func (c *ClientConn) NewSession() (*Session, error) {
ch := c.newChan(c.transport)
if err := c.transport.writePacket(marshal(msgChannelOpen, channelOpenMsg{
ChanType: "session",
PeersId: ch.localId,
PeersWindow: channelWindowSize,
MaxPacketSize: channelMaxPacketSize,
})); err != nil {
c.chanList.remove(ch.localId)
return nil, err
}
if err := ch.waitForChannelOpenResponse(); err != nil {
c.chanList.remove(ch.localId)
return nil, fmt.Errorf("ssh: unable to open session: %v", err)
}
return &Session{
clientChan: ch,
}, nil
}
// An ExitError reports unsuccessful completion of a remote command.
type ExitError struct {
Waitmsg
}
func (e *ExitError) Error() string {
return e.Waitmsg.String()
}
// Waitmsg stores the information about an exited remote command
// as reported by Wait.
type Waitmsg struct {
status int
signal string
msg string
lang string
}
// ExitStatus returns the exit status of the remote command.
func (w Waitmsg) ExitStatus() int {
return w.status
}
// Signal returns the exit signal of the remote command if
// it was terminated violently.
func (w Waitmsg) Signal() string {
return w.signal
}
// Msg returns the exit message given by the remote command
func (w Waitmsg) Msg() string {
return w.msg
}
// Lang returns the language tag. See RFC 3066
func (w Waitmsg) Lang() string {
return w.lang
}
func (w Waitmsg) String() string {
return fmt.Sprintf("Process exited with: %v. Reason was: %v (%v)", w.status, w.msg, w.signal)
}

367
vendor/code.google.com/p/go.crypto/ssh/tcpip.go generated vendored
View file

@ -1,367 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"errors"
"fmt"
"io"
"math/rand"
"net"
"strconv"
"strings"
"sync"
"time"
)
// Listen requests the remote peer open a listening socket
// on addr. Incoming connections will be available by calling
// Accept on the returned net.Listener.
func (c *ClientConn) Listen(n, addr string) (net.Listener, error) {
laddr, err := net.ResolveTCPAddr(n, addr)
if err != nil {
return nil, err
}
return c.ListenTCP(laddr)
}
// Automatic port allocation is broken with OpenSSH before 6.0. See
// also https://bugzilla.mindrot.org/show_bug.cgi?id=2017. In
// particular, OpenSSH 5.9 sends a channelOpenMsg with port number 0,
// rather than the actual port number. This means you can never open
// two different listeners with auto allocated ports. We work around
// this by trying explicit ports until we succeed.
const openSSHPrefix = "OpenSSH_"
var portRandomizer = rand.New(rand.NewSource(time.Now().UnixNano()))
// isBrokenOpenSSHVersion returns true if the given version string
// specifies a version of OpenSSH that is known to have a bug in port
// forwarding.
func isBrokenOpenSSHVersion(versionStr string) bool {
i := strings.Index(versionStr, openSSHPrefix)
if i < 0 {
return false
}
i += len(openSSHPrefix)
j := i
for ; j < len(versionStr); j++ {
if versionStr[j] < '0' || versionStr[j] > '9' {
break
}
}
version, _ := strconv.Atoi(versionStr[i:j])
return version < 6
}
// autoPortListenWorkaround simulates automatic port allocation by
// trying random ports repeatedly.
func (c *ClientConn) autoPortListenWorkaround(laddr *net.TCPAddr) (net.Listener, error) {
var sshListener net.Listener
var err error
const tries = 10
for i := 0; i < tries; i++ {
addr := *laddr
addr.Port = 1024 + portRandomizer.Intn(60000)
sshListener, err = c.ListenTCP(&addr)
if err == nil {
laddr.Port = addr.Port
return sshListener, err
}
}
return nil, fmt.Errorf("ssh: listen on random port failed after %d tries: %v", tries, err)
}
// RFC 4254 7.1
type channelForwardMsg struct {
Message string
WantReply bool
raddr string
rport uint32
}
// ListenTCP requests the remote peer open a listening socket
// on laddr. Incoming connections will be available by calling
// Accept on the returned net.Listener.
func (c *ClientConn) ListenTCP(laddr *net.TCPAddr) (net.Listener, error) {
if laddr.Port == 0 && isBrokenOpenSSHVersion(c.serverVersion) {
return c.autoPortListenWorkaround(laddr)
}
m := channelForwardMsg{
"tcpip-forward",
true, // sendGlobalRequest waits for a reply
laddr.IP.String(),
uint32(laddr.Port),
}
// send message
resp, err := c.sendGlobalRequest(m)
if err != nil {
return nil, err
}
// If the original port was 0, then the remote side will
// supply a real port number in the response.
if laddr.Port == 0 {
port, _, ok := parseUint32(resp.Data)
if !ok {
return nil, errors.New("unable to parse response")
}
laddr.Port = int(port)
}
// Register this forward, using the port number we obtained.
ch := c.forwardList.add(*laddr)
return &tcpListener{laddr, c, ch}, nil
}
// forwardList stores a mapping between remote
// forward requests and the tcpListeners.
type forwardList struct {
sync.Mutex
entries []forwardEntry
}
// forwardEntry represents an established mapping of a laddr on a
// remote ssh server to a channel connected to a tcpListener.
type forwardEntry struct {
laddr net.TCPAddr
c chan forward
}
// forward represents an incoming forwarded tcpip connection. The
// arguments to add/remove/lookup should be address as specified in
// the original forward-request.
type forward struct {
c *clientChan // the ssh client channel underlying this forward
raddr *net.TCPAddr // the raddr of the incoming connection
}
func (l *forwardList) add(addr net.TCPAddr) chan forward {
l.Lock()
defer l.Unlock()
f := forwardEntry{
addr,
make(chan forward, 1),
}
l.entries = append(l.entries, f)
return f.c
}
// remove removes the forward entry, and the channel feeding its
// listener.
func (l *forwardList) remove(addr net.TCPAddr) {
l.Lock()
defer l.Unlock()
for i, f := range l.entries {
if addr.IP.Equal(f.laddr.IP) && addr.Port == f.laddr.Port {
l.entries = append(l.entries[:i], l.entries[i+1:]...)
close(f.c)
return
}
}
}
// closeAll closes and clears all forwards.
func (l *forwardList) closeAll() {
l.Lock()
defer l.Unlock()
for _, f := range l.entries {
close(f.c)
}
l.entries = nil
}
func (l *forwardList) lookup(addr net.TCPAddr) (chan forward, bool) {
l.Lock()
defer l.Unlock()
for _, f := range l.entries {
if addr.IP.Equal(f.laddr.IP) && addr.Port == f.laddr.Port {
return f.c, true
}
}
return nil, false
}
type tcpListener struct {
laddr *net.TCPAddr
conn *ClientConn
in <-chan forward
}
// Accept waits for and returns the next connection to the listener.
func (l *tcpListener) Accept() (net.Conn, error) {
s, ok := <-l.in
if !ok {
return nil, io.EOF
}
return &tcpChanConn{
tcpChan: &tcpChan{
clientChan: s.c,
Reader: s.c.stdout,
Writer: s.c.stdin,
},
laddr: l.laddr,
raddr: s.raddr,
}, nil
}
// Close closes the listener.
func (l *tcpListener) Close() error {
m := channelForwardMsg{
"cancel-tcpip-forward",
true,
l.laddr.IP.String(),
uint32(l.laddr.Port),
}
l.conn.forwardList.remove(*l.laddr)
if _, err := l.conn.sendGlobalRequest(m); err != nil {
return err
}
return nil
}
// Addr returns the listener's network address.
func (l *tcpListener) Addr() net.Addr {
return l.laddr
}
// Dial initiates a connection to the addr from the remote host.
// The resulting connection has a zero LocalAddr() and RemoteAddr().
func (c *ClientConn) Dial(n, addr string) (net.Conn, error) {
// Parse the address into host and numeric port.
host, portString, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
}
port, err := strconv.ParseUint(portString, 10, 16)
if err != nil {
return nil, err
}
// Use a zero address for local and remote address.
zeroAddr := &net.TCPAddr{
IP: net.IPv4zero,
Port: 0,
}
ch, err := c.dial(net.IPv4zero.String(), 0, host, int(port))
if err != nil {
return nil, err
}
return &tcpChanConn{
tcpChan: ch,
laddr: zeroAddr,
raddr: zeroAddr,
}, nil
}
// DialTCP connects to the remote address raddr on the network net,
// which must be "tcp", "tcp4", or "tcp6". If laddr is not nil, it is used
// as the local address for the connection.
func (c *ClientConn) DialTCP(n string, laddr, raddr *net.TCPAddr) (net.Conn, error) {
if laddr == nil {
laddr = &net.TCPAddr{
IP: net.IPv4zero,
Port: 0,
}
}
ch, err := c.dial(laddr.IP.String(), laddr.Port, raddr.IP.String(), raddr.Port)
if err != nil {
return nil, err
}
return &tcpChanConn{
tcpChan: ch,
laddr: laddr,
raddr: raddr,
}, nil
}
// RFC 4254 7.2
type channelOpenDirectMsg struct {
ChanType string
PeersId uint32
PeersWindow uint32
MaxPacketSize uint32
raddr string
rport uint32
laddr string
lport uint32
}
// dial opens a direct-tcpip connection to the remote server. laddr and raddr are passed as
// strings and are expected to be resolvable at the remote end.
func (c *ClientConn) dial(laddr string, lport int, raddr string, rport int) (*tcpChan, error) {
ch := c.newChan(c.transport)
if err := c.transport.writePacket(marshal(msgChannelOpen, channelOpenDirectMsg{
ChanType: "direct-tcpip",
PeersId: ch.localId,
PeersWindow: channelWindowSize,
MaxPacketSize: channelMaxPacketSize,
raddr: raddr,
rport: uint32(rport),
laddr: laddr,
lport: uint32(lport),
})); err != nil {
c.chanList.remove(ch.localId)
return nil, err
}
if err := ch.waitForChannelOpenResponse(); err != nil {
c.chanList.remove(ch.localId)
return nil, fmt.Errorf("ssh: unable to open direct tcpip connection: %v", err)
}
return &tcpChan{
clientChan: ch,
Reader: ch.stdout,
Writer: ch.stdin,
}, nil
}
type tcpChan struct {
*clientChan // the backing channel
io.Reader
io.Writer
}
// tcpChanConn fulfills the net.Conn interface without
// the tcpChan having to hold laddr or raddr directly.
type tcpChanConn struct {
*tcpChan
laddr, raddr net.Addr
}
// LocalAddr returns the local network address.
func (t *tcpChanConn) LocalAddr() net.Addr {
return t.laddr
}
// RemoteAddr returns the remote network address.
func (t *tcpChanConn) RemoteAddr() net.Addr {
return t.raddr
}
// SetDeadline sets the read and write deadlines associated
// with the connection.
func (t *tcpChanConn) SetDeadline(deadline time.Time) error {
if err := t.SetReadDeadline(deadline); err != nil {
return err
}
return t.SetWriteDeadline(deadline)
}
// SetReadDeadline sets the read deadline.
// A zero value for t means Read will not time out.
// After the deadline, the error from Read will implement net.Error
// with Timeout() == true.
func (t *tcpChanConn) SetReadDeadline(deadline time.Time) error {
return errors.New("ssh: tcpChan: deadline not supported")
}
// SetWriteDeadline exists to satisfy the net.Conn interface
// but is not implemented by this type. It always returns an error.
func (t *tcpChanConn) SetWriteDeadline(deadline time.Time) error {
return errors.New("ssh: tcpChan: deadline not supported")
}

426
vendor/code.google.com/p/go.crypto/ssh/transport.go generated vendored
View file

@ -1,426 +0,0 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"bufio"
"crypto/cipher"
"crypto/subtle"
"encoding/binary"
"errors"
"hash"
"io"
"net"
"sync"
)
const (
packetSizeMultiple = 16 // TODO(huin) this should be determined by the cipher.
// RFC 4253 section 6.1 defines a minimum packet size of 32768 that implementations
// MUST be able to process (plus a few more kilobytes for padding and mac). The RFC
// indicates implementations SHOULD be able to handle larger packet sizes, but then
// waffles on about reasonable limits.
//
// OpenSSH caps their maxPacket at 256kb so we choose to do the same.
maxPacket = 256 * 1024
)
// packetConn represents a transport that implements packet based
// operations.
type packetConn interface {
// Encrypt and send a packet of data to the remote peer.
writePacket(packet []byte) error
// Read a packet from the connection
readPacket() ([]byte, error)
// Close closes the write-side of the connection.
Close() error
}
// transport represents the SSH connection to the remote peer.
type transport struct {
reader
writer
net.Conn
// Initial H used for the session ID. Once assigned this does
// not change, even during subsequent key exchanges.
sessionID []byte
}
// reader represents the incoming connection state.
type reader struct {
io.Reader
common
}
// writer represents the outgoing connection state.
type writer struct {
sync.Mutex // protects writer.Writer from concurrent writes
*bufio.Writer
rand io.Reader
common
}
// prepareKeyChange sets up key material for a keychange. The key changes in
// both directions are triggered by reading and writing a msgNewKey packet
// respectively.
func (t *transport) prepareKeyChange(algs *algorithms, kexResult *kexResult) error {
t.writer.cipherAlgo = algs.wCipher
t.writer.macAlgo = algs.wMAC
t.writer.compressionAlgo = algs.wCompression
t.reader.cipherAlgo = algs.rCipher
t.reader.macAlgo = algs.rMAC
t.reader.compressionAlgo = algs.rCompression
if t.sessionID == nil {
t.sessionID = kexResult.H
}
kexResult.SessionID = t.sessionID
t.reader.pendingKeyChange <- kexResult
t.writer.pendingKeyChange <- kexResult
return nil
}
// common represents the cipher state needed to process messages in a single
// direction.
type common struct {
seqNum uint32
mac hash.Hash
cipher cipher.Stream
cipherAlgo string
macAlgo string
compressionAlgo string
dir direction
pendingKeyChange chan *kexResult
}
// Read and decrypt a single packet from the remote peer.
func (r *reader) readPacket() ([]byte, error) {
var lengthBytes = make([]byte, 5)
var macSize uint32
if _, err := io.ReadFull(r, lengthBytes); err != nil {
return nil, err
}
r.cipher.XORKeyStream(lengthBytes, lengthBytes)
if r.mac != nil {
r.mac.Reset()
seqNumBytes := []byte{
byte(r.seqNum >> 24),
byte(r.seqNum >> 16),
byte(r.seqNum >> 8),
byte(r.seqNum),
}
r.mac.Write(seqNumBytes)
r.mac.Write(lengthBytes)
macSize = uint32(r.mac.Size())
}
length := binary.BigEndian.Uint32(lengthBytes[0:4])
paddingLength := uint32(lengthBytes[4])
if length <= paddingLength+1 {
return nil, errors.New("ssh: invalid packet length, packet too small")
}
if length > maxPacket {
return nil, errors.New("ssh: invalid packet length, packet too large")
}
packet := make([]byte, length-1+macSize)
if _, err := io.ReadFull(r, packet); err != nil {
return nil, err
}
mac := packet[length-1:]
r.cipher.XORKeyStream(packet, packet[:length-1])
if r.mac != nil {
r.mac.Write(packet[:length-1])
if subtle.ConstantTimeCompare(r.mac.Sum(nil), mac) != 1 {
return nil, errors.New("ssh: MAC failure")
}
}
r.seqNum++
packet = packet[:length-paddingLength-1]
if len(packet) > 0 && packet[0] == msgNewKeys {
select {
case k := <-r.pendingKeyChange:
if err := r.setupKeys(r.dir, k); err != nil {
return nil, err
}
default:
return nil, errors.New("ssh: got bogus newkeys message.")
}
}
return packet, nil
}
// Read and decrypt next packet discarding debug and noop messages.
func (t *transport) readPacket() ([]byte, error) {
for {
packet, err := t.reader.readPacket()
if err != nil {
return nil, err
}
if len(packet) == 0 {
return nil, errors.New("ssh: zero length packet")
}
if packet[0] != msgIgnore && packet[0] != msgDebug {
return packet, nil
}
}
panic("unreachable")
}
// Encrypt and send a packet of data to the remote peer.
func (w *writer) writePacket(packet []byte) error {
changeKeys := len(packet) > 0 && packet[0] == msgNewKeys
if len(packet) > maxPacket {
return errors.New("ssh: packet too large")
}
w.Mutex.Lock()
defer w.Mutex.Unlock()
paddingLength := packetSizeMultiple - (5+len(packet))%packetSizeMultiple
if paddingLength < 4 {
paddingLength += packetSizeMultiple
}
length := len(packet) + 1 + paddingLength
lengthBytes := []byte{
byte(length >> 24),
byte(length >> 16),
byte(length >> 8),
byte(length),
byte(paddingLength),
}
padding := make([]byte, paddingLength)
_, err := io.ReadFull(w.rand, padding)
if err != nil {
return err
}
if w.mac != nil {
w.mac.Reset()
seqNumBytes := []byte{
byte(w.seqNum >> 24),
byte(w.seqNum >> 16),
byte(w.seqNum >> 8),
byte(w.seqNum),
}
w.mac.Write(seqNumBytes)
w.mac.Write(lengthBytes)
w.mac.Write(packet)
w.mac.Write(padding)
}
// TODO(dfc) lengthBytes, packet and padding should be
// subslices of a single buffer
w.cipher.XORKeyStream(lengthBytes, lengthBytes)
w.cipher.XORKeyStream(packet, packet)
w.cipher.XORKeyStream(padding, padding)
if _, err := w.Write(lengthBytes); err != nil {
return err
}
if _, err := w.Write(packet); err != nil {
return err
}
if _, err := w.Write(padding); err != nil {
return err
}
if w.mac != nil {
if _, err := w.Write(w.mac.Sum(nil)); err != nil {
return err
}
}
w.seqNum++
if err = w.Flush(); err != nil {
return err
}
if changeKeys {
select {
case k := <-w.pendingKeyChange:
err = w.setupKeys(w.dir, k)
default:
panic("ssh: no key material for msgNewKeys")
}
}
return err
}
func newTransport(conn net.Conn, rand io.Reader, isClient bool) *transport {
t := &transport{
reader: reader{
Reader: bufio.NewReader(conn),
common: common{
cipher: noneCipher{},
pendingKeyChange: make(chan *kexResult, 1),
},
},
writer: writer{
Writer: bufio.NewWriter(conn),
rand: rand,
common: common{
cipher: noneCipher{},
pendingKeyChange: make(chan *kexResult, 1),
},
},
Conn: conn,
}
if isClient {
t.reader.dir = serverKeys
t.writer.dir = clientKeys
} else {
t.reader.dir = clientKeys
t.writer.dir = serverKeys
}
return t
}
type direction struct {
ivTag []byte
keyTag []byte
macKeyTag []byte
}
// TODO(dfc) can this be made a constant ?
var (
serverKeys = direction{[]byte{'B'}, []byte{'D'}, []byte{'F'}}
clientKeys = direction{[]byte{'A'}, []byte{'C'}, []byte{'E'}}
)
// setupKeys sets the cipher and MAC keys from kex.K, kex.H and sessionId, as
// described in RFC 4253, section 6.4. direction should either be serverKeys
// (to setup server->client keys) or clientKeys (for client->server keys).
func (c *common) setupKeys(d direction, r *kexResult) error {
cipherMode := cipherModes[c.cipherAlgo]
macMode := macModes[c.macAlgo]
iv := make([]byte, cipherMode.ivSize)
key := make([]byte, cipherMode.keySize)
macKey := make([]byte, macMode.keySize)
h := r.Hash.New()
generateKeyMaterial(iv, d.ivTag, r.K, r.H, r.SessionID, h)
generateKeyMaterial(key, d.keyTag, r.K, r.H, r.SessionID, h)
generateKeyMaterial(macKey, d.macKeyTag, r.K, r.H, r.SessionID, h)
c.mac = macMode.new(macKey)
var err error
c.cipher, err = cipherMode.createCipher(key, iv)
return err
}
// generateKeyMaterial fills out with key material generated from tag, K, H
// and sessionId, as specified in RFC 4253, section 7.2.
func generateKeyMaterial(out, tag []byte, K, H, sessionId []byte, h hash.Hash) {
var digestsSoFar []byte
for len(out) > 0 {
h.Reset()
h.Write(K)
h.Write(H)
if len(digestsSoFar) == 0 {
h.Write(tag)
h.Write(sessionId)
} else {
h.Write(digestsSoFar)
}
digest := h.Sum(nil)
n := copy(out, digest)
out = out[n:]
if len(out) > 0 {
digestsSoFar = append(digestsSoFar, digest...)
}
}
}
const packageVersion = "SSH-2.0-Go"
// Sends and receives a version line. The versionLine string should
// be US ASCII, start with "SSH-2.0-", and should not include a
// newline. exchangeVersions returns the other side's version line.
func exchangeVersions(rw io.ReadWriter, versionLine []byte) (them []byte, err error) {
// Contrary to the RFC, we do not ignore lines that don't
// start with "SSH-2.0-" to make the library usable with
// nonconforming servers.
for _, c := range versionLine {
// The spec disallows non US-ASCII chars, and
// specifically forbids null chars.
if c < 32 {
return nil, errors.New("ssh: junk character in version line")
}
}
if _, err = rw.Write(append(versionLine, '\r', '\n')); err != nil {
return
}
them, err = readVersion(rw)
return them, err
}
// maxVersionStringBytes is the maximum number of bytes that we'll
// accept as a version string. RFC 4253 section 4.2 limits this at 255
// chars
const maxVersionStringBytes = 255
// Read version string as specified by RFC 4253, section 4.2.
func readVersion(r io.Reader) ([]byte, error) {
versionString := make([]byte, 0, 64)
var ok bool
var buf [1]byte
for len(versionString) < maxVersionStringBytes {
_, err := io.ReadFull(r, buf[:])
if err != nil {
return nil, err
}
// The RFC says that the version should be terminated with \r\n
// but several SSH servers actually only send a \n.
if buf[0] == '\n' {
ok = true
break
}
// non ASCII chars are disallowed, but we are lenient,
// since Go doesn't use null-terminated strings.
// The RFC allows a comment after a space, however,
// all of it (version and comments) goes into the
// session hash.
versionString = append(versionString, buf[0])
}
if !ok {
return nil, errors.New("ssh: overflow reading version string")
}
// There might be a '\r' on the end which we should remove.
if len(versionString) > 0 && versionString[len(versionString)-1] == '\r' {
versionString = versionString[:len(versionString)-1]
}
return versionString, nil
}

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