forgejo/vendor/github.com/denisenkom/go-mssqldb/net.go
6543 792b4dba2c
[Vendor] Update directly used dependencys (#15593)
* update github.com/blevesearch/bleve v2.0.2 -> v2.0.3

* github.com/denisenkom/go-mssqldb v0.9.0 -> v0.10.0

* github.com/editorconfig/editorconfig-core-go v2.4.1 -> v2.4.2

* github.com/go-chi/cors v1.1.1 -> v1.2.0

* github.com/go-git/go-billy v5.0.0 -> v5.1.0

* github.com/go-git/go-git v5.2.0 -> v5.3.0

* github.com/go-ldap/ldap v3.2.4 -> v3.3.0

* github.com/go-redis/redis v8.6.0 -> v8.8.2

* github.com/go-sql-driver/mysql v1.5.0 -> v1.6.0

* github.com/go-swagger/go-swagger v0.26.1 -> v0.27.0

* github.com/lib/pq v1.9.0 -> v1.10.1

* github.com/mattn/go-sqlite3 v1.14.6 -> v1.14.7

* github.com/go-testfixtures/testfixtures v3.5.0 -> v3.6.0

* github.com/issue9/identicon v1.0.1 -> v1.2.0

* github.com/klauspost/compress v1.11.8 -> v1.12.1

* github.com/mgechev/revive v1.0.3 -> v1.0.6

* github.com/microcosm-cc/bluemonday v1.0.7 -> v1.0.8

* github.com/niklasfasching/go-org v1.4.0 -> v1.5.0

* github.com/olivere/elastic v7.0.22 -> v7.0.24

* github.com/pelletier/go-toml v1.8.1 -> v1.9.0

* github.com/prometheus/client_golang v1.9.0 -> v1.10.0

* github.com/xanzy/go-gitlab v0.44.0 -> v0.48.0

* github.com/yuin/goldmark v1.3.3 -> v1.3.5

* github.com/6543/go-version v1.2.4 -> v1.3.1

* do github.com/lib/pq v1.10.0 -> v1.10.1 again ...
2021-04-22 20:08:53 -04:00

169 lines
3.4 KiB
Go
Vendored

package mssql
import (
"fmt"
"net"
"time"
)
type timeoutConn struct {
c net.Conn
timeout time.Duration
}
func newTimeoutConn(conn net.Conn, timeout time.Duration) *timeoutConn {
return &timeoutConn{
c: conn,
timeout: timeout,
}
}
func (c *timeoutConn) Read(b []byte) (n int, err error) {
if c.timeout > 0 {
err = c.c.SetDeadline(time.Now().Add(c.timeout))
if err != nil {
return
}
}
return c.c.Read(b)
}
func (c *timeoutConn) Write(b []byte) (n int, err error) {
if c.timeout > 0 {
err = c.c.SetDeadline(time.Now().Add(c.timeout))
if err != nil {
return
}
}
return c.c.Write(b)
}
func (c timeoutConn) Close() error {
return c.c.Close()
}
func (c timeoutConn) LocalAddr() net.Addr {
return c.c.LocalAddr()
}
func (c timeoutConn) RemoteAddr() net.Addr {
return c.c.RemoteAddr()
}
func (c timeoutConn) SetDeadline(t time.Time) error {
return c.c.SetDeadline(t)
}
func (c timeoutConn) SetReadDeadline(t time.Time) error {
return c.c.SetReadDeadline(t)
}
func (c timeoutConn) SetWriteDeadline(t time.Time) error {
return c.c.SetWriteDeadline(t)
}
// this connection is used during TLS Handshake
// TDS protocol requires TLS handshake messages to be sent inside TDS packets
type tlsHandshakeConn struct {
buf *tdsBuffer
packetPending bool
continueRead bool
}
func (c *tlsHandshakeConn) Read(b []byte) (n int, err error) {
if c.packetPending {
c.packetPending = false
err = c.buf.FinishPacket()
if err != nil {
err = fmt.Errorf("cannot send handshake packet: %s", err.Error())
return
}
c.continueRead = false
}
if !c.continueRead {
var packet packetType
packet, err = c.buf.BeginRead()
if err != nil {
err = fmt.Errorf("cannot read handshake packet: %s", err.Error())
return
}
if packet != packPrelogin {
err = fmt.Errorf("unexpected packet %d, expecting prelogin", packet)
return
}
c.continueRead = true
}
return c.buf.Read(b)
}
func (c *tlsHandshakeConn) Write(b []byte) (n int, err error) {
if !c.packetPending {
c.buf.BeginPacket(packPrelogin, false)
c.packetPending = true
}
return c.buf.Write(b)
}
func (c *tlsHandshakeConn) Close() error {
return c.buf.transport.Close()
}
func (c *tlsHandshakeConn) LocalAddr() net.Addr {
return nil
}
func (c *tlsHandshakeConn) RemoteAddr() net.Addr {
return nil
}
func (c *tlsHandshakeConn) SetDeadline(_ time.Time) error {
return nil
}
func (c *tlsHandshakeConn) SetReadDeadline(_ time.Time) error {
return nil
}
func (c *tlsHandshakeConn) SetWriteDeadline(_ time.Time) error {
return nil
}
// this connection just delegates all methods to it's wrapped connection
// it also allows switching underlying connection on the fly
// it is needed because tls.Conn does not allow switching underlying connection
type passthroughConn struct {
c net.Conn
}
func (c passthroughConn) Read(b []byte) (n int, err error) {
return c.c.Read(b)
}
func (c passthroughConn) Write(b []byte) (n int, err error) {
return c.c.Write(b)
}
func (c passthroughConn) Close() error {
return c.c.Close()
}
func (c passthroughConn) LocalAddr() net.Addr {
return c.c.LocalAddr()
}
func (c passthroughConn) RemoteAddr() net.Addr {
return c.c.RemoteAddr()
}
func (c passthroughConn) SetDeadline(t time.Time) error {
return c.c.SetDeadline(t)
}
func (c passthroughConn) SetReadDeadline(t time.Time) error {
return c.c.SetReadDeadline(t)
}
func (c passthroughConn) SetWriteDeadline(t time.Time) error {
return c.c.SetWriteDeadline(t)
}