gotosocial/internal/router/router.go
Tobi Smethurst 6cd033449f
Refine statuses (#26)
Remote media is now dereferenced and attached properly to incoming federated statuses.
    Mentions are now dereferenced and attached properly to incoming federated statuses.
    Small fixes to status visibility.
    Allow URL params for filtering statuses:

	// ExcludeRepliesKey is for specifying whether to exclude replies in a list of returned statuses by an account.
      	// PinnedKey is for specifying whether to include pinned statuses in a list of returned statuses by an account.
      	// MaxIDKey is for specifying the maximum ID of the status to retrieve.
      	// MediaOnlyKey is for specifying that only statuses with media should be returned in a list of returned statuses by an account.

    Add endpoint for fetching an account's statuses.
2021-05-17 19:06:58 +02:00

213 lines
6.8 KiB
Go

/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package router
import (
"context"
"crypto/rand"
"fmt"
"net/http"
"os"
"path/filepath"
"time"
"github.com/gin-contrib/cors"
"github.com/gin-contrib/sessions"
"github.com/gin-contrib/sessions/memstore"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/config"
"golang.org/x/crypto/acme/autocert"
)
// Router provides the REST interface for gotosocial, using gin.
type Router interface {
// Attach a gin handler to the router with the given method and path
AttachHandler(method string, path string, f gin.HandlerFunc)
// Attach a gin middleware to the router that will be used globally
AttachMiddleware(handler gin.HandlerFunc)
// Start the router
Start()
// Stop the router
Stop(ctx context.Context) error
}
// router fulfils the Router interface using gin and logrus
type router struct {
logger *logrus.Logger
engine *gin.Engine
srv *http.Server
config *config.Config
certManager *autocert.Manager
}
// Start starts the router nicely.
//
// Different ports and handlers will be served depending on whether letsencrypt is enabled or not.
// If it is enabled, then port 80 will be used for handling LE requests, and port 443 will be used
// for serving actual requests.
//
// If letsencrypt is not being used, then port 8080 only will be used for serving requests.
func (r *router) Start() {
if r.config.LetsEncryptConfig.Enabled {
// serve the http handler on port 80 for receiving letsencrypt requests and solving their devious riddles
go func() {
if err := http.ListenAndServe(":http", r.certManager.HTTPHandler(http.HandlerFunc(httpsRedirect))); err != nil && err != http.ErrServerClosed {
r.logger.Fatalf("listen: %s", err)
}
}()
// and serve the actual TLS handler on port 443
go func() {
if err := r.srv.ListenAndServeTLS("", ""); err != nil && err != http.ErrServerClosed {
r.logger.Fatalf("listen: %s", err)
}
}()
} else {
// no tls required so just serve on port 8080
go func() {
if err := r.srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
r.logger.Fatalf("listen: %s", err)
}
}()
}
}
// Stop shuts down the router nicely
func (r *router) Stop(ctx context.Context) error {
return r.srv.Shutdown(ctx)
}
// AttachHandler attaches the given gin.HandlerFunc to the router with the specified method and path.
// If the path is set to ANY, then the handlerfunc will be used for ALL methods at its given path.
func (r *router) AttachHandler(method string, path string, handler gin.HandlerFunc) {
if method == "ANY" {
r.engine.Any(path, handler)
} else {
r.engine.Handle(method, path, handler)
}
}
// AttachMiddleware attaches a gin middleware to the router that will be used globally
func (r *router) AttachMiddleware(middleware gin.HandlerFunc) {
r.engine.Use(middleware)
}
// New returns a new Router with the specified configuration, using the given logrus logger.
func New(config *config.Config, logger *logrus.Logger) (Router, error) {
lvl, err := logrus.ParseLevel(config.LogLevel)
if err != nil {
return nil, fmt.Errorf("couldn't parse log level %s to set router level: %s", config.LogLevel, err)
}
switch lvl {
case logrus.TraceLevel, logrus.DebugLevel:
gin.SetMode(gin.DebugMode)
default:
gin.SetMode(gin.ReleaseMode)
}
// create the actual engine here -- this is the core request routing handler for gts
engine := gin.Default()
engine.Use(cors.New(cors.Config{
AllowAllOrigins: true,
AllowMethods: []string{"GET", "POST", "PUT", "PATCH", "DELETE"},
AllowHeaders: []string{"Origin", "Content-Length", "Content-Type", "Authorization"},
AllowCredentials: false,
MaxAge: 12 * time.Hour,
}))
engine.MaxMultipartMemory = 8 << 20 // 8 MiB
// create a new session store middleware
store, err := sessionStore()
if err != nil {
return nil, fmt.Errorf("error creating session store: %s", err)
}
engine.Use(sessions.Sessions("gotosocial-session", store))
// load html templates for use by the router
cwd, err := os.Getwd()
if err != nil {
return nil, fmt.Errorf("error getting current working directory: %s", err)
}
tmPath := filepath.Join(cwd, fmt.Sprintf("%s*", config.TemplateConfig.BaseDir))
logger.Debugf("loading templates from %s", tmPath)
engine.LoadHTMLGlob(tmPath)
// create the actual http server here
s := &http.Server{
Handler: engine,
ReadTimeout: 60 * time.Second,
WriteTimeout: 30 * time.Second,
IdleTimeout: 30 * time.Second,
ReadHeaderTimeout: 30 * time.Second,
}
var m *autocert.Manager
// We need to spawn the underlying server slightly differently depending on whether lets encrypt is enabled or not.
// In either case, the gin engine will still be used for routing requests.
if config.LetsEncryptConfig.Enabled {
// le IS enabled, so roll up an autocert manager for handling letsencrypt requests
m = &autocert.Manager{
Prompt: autocert.AcceptTOS,
HostPolicy: autocert.HostWhitelist(config.Host),
Cache: autocert.DirCache(config.LetsEncryptConfig.CertDir),
Email: config.LetsEncryptConfig.EmailAddress,
}
// and create an HTTPS server
s.Addr = ":https"
s.TLSConfig = m.TLSConfig()
} else {
// le is NOT enabled, so just serve bare requests on port 8080
s.Addr = ":8080"
}
return &router{
logger: logger,
engine: engine,
srv: s,
config: config,
certManager: m,
}, nil
}
// sessionStore returns a new session store with a random auth and encryption key.
// This means that cookies using the store will be reset if gotosocial is restarted!
func sessionStore() (memstore.Store, error) {
auth := make([]byte, 32)
crypt := make([]byte, 32)
if _, err := rand.Read(auth); err != nil {
return nil, err
}
if _, err := rand.Read(crypt); err != nil {
return nil, err
}
return memstore.NewStore(auth, crypt), nil
}
func httpsRedirect(w http.ResponseWriter, req *http.Request) {
target := "https://" + req.Host + req.URL.Path
if len(req.URL.RawQuery) > 0 {
target += "?" + req.URL.RawQuery
}
http.Redirect(w, req, target, http.StatusTemporaryRedirect)
}