[chore]: Bump github.com/gorilla/websocket from 1.5.1 to 1.5.2 (#2987)

Bumps [github.com/gorilla/websocket](https://github.com/gorilla/websocket) from 1.5.1 to 1.5.2.
- [Release notes](https://github.com/gorilla/websocket/releases)
- [Commits](https://github.com/gorilla/websocket/compare/v1.5.1...v1.5.2)

---
updated-dependencies:
- dependency-name: github.com/gorilla/websocket
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This commit is contained in:
dependabot[bot] 2024-06-10 07:43:38 +00:00 committed by GitHub
parent 12c406d968
commit a687f0634c
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
15 changed files with 584 additions and 146 deletions

2
go.mod
View file

@ -37,7 +37,7 @@ require (
github.com/go-swagger/go-swagger v0.31.0
github.com/google/uuid v1.6.0
github.com/gorilla/feeds v1.1.2
github.com/gorilla/websocket v1.5.1
github.com/gorilla/websocket v1.5.2
github.com/h2non/filetype v1.1.3
github.com/jackc/pgx/v5 v5.6.0
github.com/microcosm-cc/bluemonday v1.0.26

4
go.sum
View file

@ -346,8 +346,8 @@ github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pw
github.com/gorilla/sessions v1.2.2 h1:lqzMYz6bOfvn2WriPUjNByzeXIlVzURcPmgMczkmTjY=
github.com/gorilla/sessions v1.2.2/go.mod h1:ePLdVu+jbEgHH+KWw8I1z2wqd0BAdAQh/8LRvBeoNcQ=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/gorilla/websocket v1.5.1 h1:gmztn0JnHVt9JZquRuzLw3g4wouNVzKL15iLr/zn/QY=
github.com/gorilla/websocket v1.5.1/go.mod h1:x3kM2JMyaluk02fnUJpQuwD2dCS5NDG2ZHL0uE0tcaY=
github.com/gorilla/websocket v1.5.2 h1:qoW6V1GT3aZxybsbC6oLnailWnB+qTMVwMreOso9XUw=
github.com/gorilla/websocket v1.5.2/go.mod h1:0n9H61RBAcf5/38py2MCYbxzPIY9rOkpvvMT24Rqs30=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.1 h1:/c3QmbOGMGTOumP2iT/rCwB7b0QDGLKzqOmktBjT+Is=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.1/go.mod h1:5SN9VR2LTsRFsrEC6FHgRbTWrTHu6tqPeKxEQv15giM=
github.com/h2non/filetype v1.1.3 h1:FKkx9QbD7HR/zjK1Ia5XiBsq9zdLi5Kf3zGyFTAFkGg=

View file

@ -1,3 +1,13 @@
run:
skip-dirs:
timeout: "5m"
# will not run golangci-lint against *_test.go
tests: false
issues:
exclude-dirs:
- examples/*.go
exclude-rules:
# excluding error checks from all the .go files
- path: ./*.go
linters:
- errcheck

View file

@ -13,11 +13,11 @@ Gorilla WebSocket is a [Go](http://golang.org/) implementation of the [WebSocket
### Documentation
* [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)
* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
* [Write buffer pool example](https://github.com/gorilla/websocket/tree/master/examples/bufferpool)
* [Chat example](https://github.com/gorilla/websocket/tree/main/examples/chat)
* [Command example](https://github.com/gorilla/websocket/tree/main/examples/command)
* [Client and server example](https://github.com/gorilla/websocket/tree/main/examples/echo)
* [File watch example](https://github.com/gorilla/websocket/tree/main/examples/filewatch)
* [Write buffer pool example](https://github.com/gorilla/websocket/tree/main/examples/bufferpool)
### Status
@ -33,4 +33,4 @@ package API is stable.
The Gorilla WebSocket package passes the server tests in the [Autobahn Test
Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
subdirectory](https://github.com/gorilla/websocket/tree/main/examples/autobahn).

View file

@ -11,8 +11,6 @@ import (
"errors"
"fmt"
"io"
"log"
"net"
"net/http"
"net/http/httptrace"
@ -228,7 +226,6 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
k == "Connection" ||
k == "Sec-Websocket-Key" ||
k == "Sec-Websocket-Version" ||
//#nosec G101 (CWE-798): Potential HTTP request smuggling via parameter pollution
k == "Sec-Websocket-Extensions" ||
(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
@ -294,9 +291,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
}
err = c.SetDeadline(deadline)
if err != nil {
if err := c.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
c.Close()
return nil, err
}
return c, nil
@ -336,9 +331,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
defer func() {
if netConn != nil {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
netConn.Close()
}
}()
@ -399,7 +392,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
}
}
if resp.StatusCode != 101 ||
if resp.StatusCode != http.StatusSwitchingProtocols ||
!tokenListContainsValue(resp.Header, "Upgrade", "websocket") ||
!tokenListContainsValue(resp.Header, "Connection", "upgrade") ||
resp.Header.Get("Sec-Websocket-Accept") != computeAcceptKey(challengeKey) {
@ -429,9 +422,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
resp.Body = io.NopCloser(bytes.NewReader([]byte{}))
conn.subprotocol = resp.Header.Get("Sec-Websocket-Protocol")
if err := netConn.SetDeadline(time.Time{}); err != nil {
return nil, nil, err
}
netConn.SetDeadline(time.Time{})
netConn = nil // to avoid close in defer.
return conn, resp, nil
}

View file

@ -8,7 +8,6 @@ import (
"compress/flate"
"errors"
"io"
"log"
"strings"
"sync"
)
@ -34,9 +33,7 @@ func decompressNoContextTakeover(r io.Reader) io.ReadCloser {
"\x01\x00\x00\xff\xff"
fr, _ := flateReaderPool.Get().(io.ReadCloser)
if err := fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil); err != nil {
panic(err)
}
fr.(flate.Resetter).Reset(io.MultiReader(r, strings.NewReader(tail)), nil)
return &flateReadWrapper{fr}
}
@ -135,9 +132,7 @@ func (r *flateReadWrapper) Read(p []byte) (int, error) {
// Preemptively place the reader back in the pool. This helps with
// scenarios where the application does not call NextReader() soon after
// this final read.
if err := r.Close(); err != nil {
log.Printf("websocket: flateReadWrapper.Close() returned error: %v", err)
}
r.Close()
}
return n, err
}

View file

@ -10,7 +10,6 @@ import (
"encoding/binary"
"errors"
"io"
"log"
"net"
"strconv"
"strings"
@ -193,13 +192,6 @@ func newMaskKey() [4]byte {
return k
}
func hideTempErr(err error) error {
if e, ok := err.(net.Error); ok {
err = &netError{msg: e.Error(), timeout: e.Timeout()}
}
return err
}
func isControl(frameType int) bool {
return frameType == CloseMessage || frameType == PingMessage || frameType == PongMessage
}
@ -365,7 +357,6 @@ func (c *Conn) RemoteAddr() net.Addr {
// Write methods
func (c *Conn) writeFatal(err error) error {
err = hideTempErr(err)
c.writeErrMu.Lock()
if c.writeErr == nil {
c.writeErr = err
@ -379,9 +370,7 @@ func (c *Conn) read(n int) ([]byte, error) {
if err == io.EOF {
err = errUnexpectedEOF
}
if _, err := c.br.Discard(len(p)); err != nil {
return p, err
}
c.br.Discard(len(p))
return p, err
}
@ -396,9 +385,7 @@ func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error
return err
}
if err := c.conn.SetWriteDeadline(deadline); err != nil {
return c.writeFatal(err)
}
c.conn.SetWriteDeadline(deadline)
if len(buf1) == 0 {
_, err = c.conn.Write(buf0)
} else {
@ -408,7 +395,7 @@ func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error
return c.writeFatal(err)
}
if frameType == CloseMessage {
_ = c.writeFatal(ErrCloseSent)
c.writeFatal(ErrCloseSent)
}
return nil
}
@ -447,21 +434,27 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
maskBytes(key, 0, buf[6:])
}
d := 1000 * time.Hour
if !deadline.IsZero() {
d = time.Until(deadline)
if deadline.IsZero() {
// No timeout for zero time.
<-c.mu
} else {
d := time.Until(deadline)
if d < 0 {
return errWriteTimeout
}
select {
case <-c.mu:
default:
timer := time.NewTimer(d)
select {
case <-c.mu:
timer.Stop()
case <-timer.C:
return errWriteTimeout
}
}
}
timer := time.NewTimer(d)
select {
case <-c.mu:
timer.Stop()
case <-timer.C:
return errWriteTimeout
}
defer func() { c.mu <- struct{}{} }()
c.writeErrMu.Lock()
@ -471,15 +464,13 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
return err
}
if err := c.conn.SetWriteDeadline(deadline); err != nil {
return c.writeFatal(err)
}
c.conn.SetWriteDeadline(deadline)
_, err = c.conn.Write(buf)
if err != nil {
return c.writeFatal(err)
}
if messageType == CloseMessage {
_ = c.writeFatal(ErrCloseSent)
c.writeFatal(ErrCloseSent)
}
return err
}
@ -490,9 +481,7 @@ func (c *Conn) beginMessage(mw *messageWriter, messageType int) error {
// probably better to return an error in this situation, but we cannot
// change this without breaking existing applications.
if c.writer != nil {
if err := c.writer.Close(); err != nil {
log.Printf("websocket: discarding writer close error: %v", err)
}
c.writer.Close()
c.writer = nil
}
@ -645,7 +634,7 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
}
if final {
_ = w.endMessage(errWriteClosed)
w.endMessage(errWriteClosed)
return nil
}
@ -832,9 +821,7 @@ func (c *Conn) advanceFrame() (int, error) {
rsv2 := p[0]&rsv2Bit != 0
rsv3 := p[0]&rsv3Bit != 0
mask := p[1]&maskBit != 0
if err := c.setReadRemaining(int64(p[1] & 0x7f)); err != nil {
return noFrame, err
}
c.setReadRemaining(int64(p[1] & 0x7f))
c.readDecompress = false
if rsv1 {
@ -939,9 +926,7 @@ func (c *Conn) advanceFrame() (int, error) {
}
if c.readLimit > 0 && c.readLength > c.readLimit {
if err := c.WriteControl(CloseMessage, FormatCloseMessage(CloseMessageTooBig, ""), time.Now().Add(writeWait)); err != nil {
return noFrame, err
}
c.WriteControl(CloseMessage, FormatCloseMessage(CloseMessageTooBig, ""), time.Now().Add(writeWait))
return noFrame, ErrReadLimit
}
@ -953,9 +938,7 @@ func (c *Conn) advanceFrame() (int, error) {
var payload []byte
if c.readRemaining > 0 {
payload, err = c.read(int(c.readRemaining))
if err := c.setReadRemaining(0); err != nil {
return noFrame, err
}
c.setReadRemaining(0)
if err != nil {
return noFrame, err
}
@ -1002,9 +985,7 @@ func (c *Conn) handleProtocolError(message string) error {
if len(data) > maxControlFramePayloadSize {
data = data[:maxControlFramePayloadSize]
}
if err := c.WriteControl(CloseMessage, data, time.Now().Add(writeWait)); err != nil {
return err
}
c.WriteControl(CloseMessage, data, time.Now().Add(writeWait))
return errors.New("websocket: " + message)
}
@ -1021,9 +1002,7 @@ func (c *Conn) handleProtocolError(message string) error {
func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
// Close previous reader, only relevant for decompression.
if c.reader != nil {
if err := c.reader.Close(); err != nil {
log.Printf("websocket: discarding reader close error: %v", err)
}
c.reader.Close()
c.reader = nil
}
@ -1033,7 +1012,7 @@ func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
for c.readErr == nil {
frameType, err := c.advanceFrame()
if err != nil {
c.readErr = hideTempErr(err)
c.readErr = err
break
}
@ -1073,15 +1052,13 @@ func (r *messageReader) Read(b []byte) (int, error) {
b = b[:c.readRemaining]
}
n, err := c.br.Read(b)
c.readErr = hideTempErr(err)
c.readErr = err
if c.isServer {
c.readMaskPos = maskBytes(c.readMaskKey, c.readMaskPos, b[:n])
}
rem := c.readRemaining
rem -= int64(n)
if err := c.setReadRemaining(rem); err != nil {
return 0, err
}
c.setReadRemaining(rem)
if c.readRemaining > 0 && c.readErr == io.EOF {
c.readErr = errUnexpectedEOF
}
@ -1096,7 +1073,7 @@ func (r *messageReader) Read(b []byte) (int, error) {
frameType, err := c.advanceFrame()
switch {
case err != nil:
c.readErr = hideTempErr(err)
c.readErr = err
case frameType == TextMessage || frameType == BinaryMessage:
c.readErr = errors.New("websocket: internal error, unexpected text or binary in Reader")
}
@ -1163,9 +1140,7 @@ func (c *Conn) SetCloseHandler(h func(code int, text string) error) {
if h == nil {
h = func(code int, text string) error {
message := FormatCloseMessage(code, "")
if err := c.WriteControl(CloseMessage, message, time.Now().Add(writeWait)); err != nil {
return err
}
c.WriteControl(CloseMessage, message, time.Now().Add(writeWait))
return nil
}
}
@ -1265,3 +1240,15 @@ func FormatCloseMessage(closeCode int, text string) []byte {
copy(buf[2:], text)
return buf
}
var messageTypes = map[int]string{
TextMessage: "TextMessage",
BinaryMessage: "BinaryMessage",
CloseMessage: "CloseMessage",
PingMessage: "PingMessage",
PongMessage: "PongMessage",
}
func FormatMessageType(mt int) string {
return messageTypes[mt]
}

View file

@ -9,7 +9,6 @@ package websocket
import "unsafe"
// #nosec G103 -- (CWE-242) Has been audited
const wordSize = int(unsafe.Sizeof(uintptr(0)))
func maskBytes(key [4]byte, pos int, b []byte) int {
@ -23,7 +22,6 @@ func maskBytes(key [4]byte, pos int, b []byte) int {
}
// Mask one byte at a time to word boundary.
//#nosec G103 -- (CWE-242) Has been audited
if n := int(uintptr(unsafe.Pointer(&b[0]))) % wordSize; n != 0 {
n = wordSize - n
for i := range b[:n] {
@ -38,13 +36,11 @@ func maskBytes(key [4]byte, pos int, b []byte) int {
for i := range k {
k[i] = key[(pos+i)&3]
}
//#nosec G103 -- (CWE-242) Has been audited
kw := *(*uintptr)(unsafe.Pointer(&k))
// Mask one word at a time.
n := (len(b) / wordSize) * wordSize
for i := 0; i < n; i += wordSize {
//#nosec G103 -- (CWE-242) Has been audited
*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&b[0])) + uintptr(i))) ^= kw
}

View file

@ -8,7 +8,6 @@ import (
"bufio"
"encoding/base64"
"errors"
"log"
"net"
"net/http"
"net/url"
@ -58,9 +57,7 @@ func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error)
}
if err := connectReq.Write(conn); err != nil {
if err := conn.Close(); err != nil {
log.Printf("httpProxyDialer: failed to close connection: %v", err)
}
conn.Close()
return nil, err
}
@ -69,16 +66,12 @@ func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error)
br := bufio.NewReader(conn)
resp, err := http.ReadResponse(br, connectReq)
if err != nil {
if err := conn.Close(); err != nil {
log.Printf("httpProxyDialer: failed to close connection: %v", err)
}
conn.Close()
return nil, err
}
if resp.StatusCode != 200 {
if err := conn.Close(); err != nil {
log.Printf("httpProxyDialer: failed to close connection: %v", err)
}
if resp.StatusCode != http.StatusOK {
conn.Close()
f := strings.SplitN(resp.Status, " ", 2)
return nil, errors.New(f[1])
}

View file

@ -8,7 +8,6 @@ import (
"bufio"
"errors"
"io"
"log"
"net/http"
"net/url"
"strings"
@ -34,6 +33,7 @@ type Upgrader struct {
// size is zero, then buffers allocated by the HTTP server are used. The
// I/O buffer sizes do not limit the size of the messages that can be sent
// or received.
// The default value is 4096 bytes, 4kb.
ReadBufferSize, WriteBufferSize int
// WriteBufferPool is a pool of buffers for write operations. If the value
@ -102,8 +102,8 @@ func checkSameOrigin(r *http.Request) bool {
func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
if u.Subprotocols != nil {
clientProtocols := Subprotocols(r)
for _, serverProtocol := range u.Subprotocols {
for _, clientProtocol := range clientProtocols {
for _, clientProtocol := range clientProtocols {
for _, serverProtocol := range u.Subprotocols {
if clientProtocol == serverProtocol {
return clientProtocol
}
@ -173,20 +173,13 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
}
}
h, ok := w.(http.Hijacker)
if !ok {
return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
}
var brw *bufio.ReadWriter
netConn, brw, err := h.Hijack()
netConn, brw, err := http.NewResponseController(w).Hijack()
if err != nil {
return u.returnError(w, r, http.StatusInternalServerError, err.Error())
}
if brw.Reader.Buffered() > 0 {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
netConn.Close()
return nil, errors.New("websocket: client sent data before handshake is complete")
}
@ -251,34 +244,17 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
p = append(p, "\r\n"...)
// Clear deadlines set by HTTP server.
if err := netConn.SetDeadline(time.Time{}); err != nil {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
return nil, err
}
netConn.SetDeadline(time.Time{})
if u.HandshakeTimeout > 0 {
if err := netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout)); err != nil {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
return nil, err
}
netConn.SetWriteDeadline(time.Now().Add(u.HandshakeTimeout))
}
if _, err = netConn.Write(p); err != nil {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
netConn.Close()
return nil, err
}
if u.HandshakeTimeout > 0 {
if err := netConn.SetWriteDeadline(time.Time{}); err != nil {
if err := netConn.Close(); err != nil {
log.Printf("websocket: failed to close network connection: %v", err)
}
return nil, err
}
netConn.SetWriteDeadline(time.Time{})
}
return c, nil
@ -376,12 +352,8 @@ func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
// bufio.Writer's underlying writer.
var wh writeHook
bw.Reset(&wh)
if err := bw.WriteByte(0); err != nil {
panic(err)
}
if err := bw.Flush(); err != nil {
log.Printf("websocket: bufioWriterBuffer: Flush: %v", err)
}
bw.WriteByte(0)
bw.Flush()
bw.Reset(originalWriter)

View file

@ -0,0 +1,21 @@
//go:build !go1.17
// +build !go1.17
package websocket
import (
"context"
"crypto/tls"
)
func doHandshake(ctx context.Context, tlsConn *tls.Conn, cfg *tls.Config) error {
if err := tlsConn.Handshake(); err != nil {
return err
}
if !cfg.InsecureSkipVerify {
if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
return err
}
}
return nil
}

View file

@ -6,7 +6,7 @@ package websocket
import (
"crypto/rand"
"crypto/sha1" //#nosec G505 -- (CWE-327) https://datatracker.ietf.org/doc/html/rfc6455#page-54
"crypto/sha1"
"encoding/base64"
"io"
"net/http"
@ -17,7 +17,7 @@ import (
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
func computeAcceptKey(challengeKey string) string {
h := sha1.New() //#nosec G401 -- (CWE-326) https://datatracker.ietf.org/doc/html/rfc6455#page-54
h := sha1.New()
h.Write([]byte(challengeKey))
h.Write(keyGUID)
return base64.StdEncoding.EncodeToString(h.Sum(nil))

473
vendor/github.com/gorilla/websocket/x_net_proxy.go generated vendored Normal file
View file

@ -0,0 +1,473 @@
// Code generated by golang.org/x/tools/cmd/bundle. DO NOT EDIT.
//go:generate bundle -o x_net_proxy.go golang.org/x/net/proxy
// Package proxy provides support for a variety of protocols to proxy network
// data.
//
package websocket
import (
"errors"
"io"
"net"
"net/url"
"os"
"strconv"
"strings"
"sync"
)
type proxy_direct struct{}
// Direct is a direct proxy: one that makes network connections directly.
var proxy_Direct = proxy_direct{}
func (proxy_direct) Dial(network, addr string) (net.Conn, error) {
return net.Dial(network, addr)
}
// A PerHost directs connections to a default Dialer unless the host name
// requested matches one of a number of exceptions.
type proxy_PerHost struct {
def, bypass proxy_Dialer
bypassNetworks []*net.IPNet
bypassIPs []net.IP
bypassZones []string
bypassHosts []string
}
// NewPerHost returns a PerHost Dialer that directs connections to either
// defaultDialer or bypass, depending on whether the connection matches one of
// the configured rules.
func proxy_NewPerHost(defaultDialer, bypass proxy_Dialer) *proxy_PerHost {
return &proxy_PerHost{
def: defaultDialer,
bypass: bypass,
}
}
// Dial connects to the address addr on the given network through either
// defaultDialer or bypass.
func (p *proxy_PerHost) Dial(network, addr string) (c net.Conn, err error) {
host, _, err := net.SplitHostPort(addr)
if err != nil {
return nil, err
}
return p.dialerForRequest(host).Dial(network, addr)
}
func (p *proxy_PerHost) dialerForRequest(host string) proxy_Dialer {
if ip := net.ParseIP(host); ip != nil {
for _, net := range p.bypassNetworks {
if net.Contains(ip) {
return p.bypass
}
}
for _, bypassIP := range p.bypassIPs {
if bypassIP.Equal(ip) {
return p.bypass
}
}
return p.def
}
for _, zone := range p.bypassZones {
if strings.HasSuffix(host, zone) {
return p.bypass
}
if host == zone[1:] {
// For a zone ".example.com", we match "example.com"
// too.
return p.bypass
}
}
for _, bypassHost := range p.bypassHosts {
if bypassHost == host {
return p.bypass
}
}
return p.def
}
// AddFromString parses a string that contains comma-separated values
// specifying hosts that should use the bypass proxy. Each value is either an
// IP address, a CIDR range, a zone (*.example.com) or a host name
// (localhost). A best effort is made to parse the string and errors are
// ignored.
func (p *proxy_PerHost) AddFromString(s string) {
hosts := strings.Split(s, ",")
for _, host := range hosts {
host = strings.TrimSpace(host)
if len(host) == 0 {
continue
}
if strings.Contains(host, "/") {
// We assume that it's a CIDR address like 127.0.0.0/8
if _, net, err := net.ParseCIDR(host); err == nil {
p.AddNetwork(net)
}
continue
}
if ip := net.ParseIP(host); ip != nil {
p.AddIP(ip)
continue
}
if strings.HasPrefix(host, "*.") {
p.AddZone(host[1:])
continue
}
p.AddHost(host)
}
}
// AddIP specifies an IP address that will use the bypass proxy. Note that
// this will only take effect if a literal IP address is dialed. A connection
// to a named host will never match an IP.
func (p *proxy_PerHost) AddIP(ip net.IP) {
p.bypassIPs = append(p.bypassIPs, ip)
}
// AddNetwork specifies an IP range that will use the bypass proxy. Note that
// this will only take effect if a literal IP address is dialed. A connection
// to a named host will never match.
func (p *proxy_PerHost) AddNetwork(net *net.IPNet) {
p.bypassNetworks = append(p.bypassNetworks, net)
}
// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
// "example.com" matches "example.com" and all of its subdomains.
func (p *proxy_PerHost) AddZone(zone string) {
if strings.HasSuffix(zone, ".") {
zone = zone[:len(zone)-1]
}
if !strings.HasPrefix(zone, ".") {
zone = "." + zone
}
p.bypassZones = append(p.bypassZones, zone)
}
// AddHost specifies a host name that will use the bypass proxy.
func (p *proxy_PerHost) AddHost(host string) {
if strings.HasSuffix(host, ".") {
host = host[:len(host)-1]
}
p.bypassHosts = append(p.bypassHosts, host)
}
// A Dialer is a means to establish a connection.
type proxy_Dialer interface {
// Dial connects to the given address via the proxy.
Dial(network, addr string) (c net.Conn, err error)
}
// Auth contains authentication parameters that specific Dialers may require.
type proxy_Auth struct {
User, Password string
}
// FromEnvironment returns the dialer specified by the proxy related variables in
// the environment.
func proxy_FromEnvironment() proxy_Dialer {
allProxy := proxy_allProxyEnv.Get()
if len(allProxy) == 0 {
return proxy_Direct
}
proxyURL, err := url.Parse(allProxy)
if err != nil {
return proxy_Direct
}
proxy, err := proxy_FromURL(proxyURL, proxy_Direct)
if err != nil {
return proxy_Direct
}
noProxy := proxy_noProxyEnv.Get()
if len(noProxy) == 0 {
return proxy
}
perHost := proxy_NewPerHost(proxy, proxy_Direct)
perHost.AddFromString(noProxy)
return perHost
}
// proxySchemes is a map from URL schemes to a function that creates a Dialer
// from a URL with such a scheme.
var proxy_proxySchemes map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error)
// RegisterDialerType takes a URL scheme and a function to generate Dialers from
// a URL with that scheme and a forwarding Dialer. Registered schemes are used
// by FromURL.
func proxy_RegisterDialerType(scheme string, f func(*url.URL, proxy_Dialer) (proxy_Dialer, error)) {
if proxy_proxySchemes == nil {
proxy_proxySchemes = make(map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error))
}
proxy_proxySchemes[scheme] = f
}
// FromURL returns a Dialer given a URL specification and an underlying
// Dialer for it to make network requests.
func proxy_FromURL(u *url.URL, forward proxy_Dialer) (proxy_Dialer, error) {
var auth *proxy_Auth
if u.User != nil {
auth = new(proxy_Auth)
auth.User = u.User.Username()
if p, ok := u.User.Password(); ok {
auth.Password = p
}
}
switch u.Scheme {
case "socks5":
return proxy_SOCKS5("tcp", u.Host, auth, forward)
}
// If the scheme doesn't match any of the built-in schemes, see if it
// was registered by another package.
if proxy_proxySchemes != nil {
if f, ok := proxy_proxySchemes[u.Scheme]; ok {
return f(u, forward)
}
}
return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
}
var (
proxy_allProxyEnv = &proxy_envOnce{
names: []string{"ALL_PROXY", "all_proxy"},
}
proxy_noProxyEnv = &proxy_envOnce{
names: []string{"NO_PROXY", "no_proxy"},
}
)
// envOnce looks up an environment variable (optionally by multiple
// names) once. It mitigates expensive lookups on some platforms
// (e.g. Windows).
// (Borrowed from net/http/transport.go)
type proxy_envOnce struct {
names []string
once sync.Once
val string
}
func (e *proxy_envOnce) Get() string {
e.once.Do(e.init)
return e.val
}
func (e *proxy_envOnce) init() {
for _, n := range e.names {
e.val = os.Getenv(n)
if e.val != "" {
return
}
}
}
// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
// with an optional username and password. See RFC 1928 and RFC 1929.
func proxy_SOCKS5(network, addr string, auth *proxy_Auth, forward proxy_Dialer) (proxy_Dialer, error) {
s := &proxy_socks5{
network: network,
addr: addr,
forward: forward,
}
if auth != nil {
s.user = auth.User
s.password = auth.Password
}
return s, nil
}
type proxy_socks5 struct {
user, password string
network, addr string
forward proxy_Dialer
}
const proxy_socks5Version = 5
const (
proxy_socks5AuthNone = 0
proxy_socks5AuthPassword = 2
)
const proxy_socks5Connect = 1
const (
proxy_socks5IP4 = 1
proxy_socks5Domain = 3
proxy_socks5IP6 = 4
)
var proxy_socks5Errors = []string{
"",
"general failure",
"connection forbidden",
"network unreachable",
"host unreachable",
"connection refused",
"TTL expired",
"command not supported",
"address type not supported",
}
// Dial connects to the address addr on the given network via the SOCKS5 proxy.
func (s *proxy_socks5) Dial(network, addr string) (net.Conn, error) {
switch network {
case "tcp", "tcp6", "tcp4":
default:
return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
}
conn, err := s.forward.Dial(s.network, s.addr)
if err != nil {
return nil, err
}
if err := s.connect(conn, addr); err != nil {
conn.Close()
return nil, err
}
return conn, nil
}
// connect takes an existing connection to a socks5 proxy server,
// and commands the server to extend that connection to target,
// which must be a canonical address with a host and port.
func (s *proxy_socks5) connect(conn net.Conn, target string) error {
host, portStr, err := net.SplitHostPort(target)
if err != nil {
return err
}
port, err := strconv.Atoi(portStr)
if err != nil {
return errors.New("proxy: failed to parse port number: " + portStr)
}
if port < 1 || port > 0xffff {
return errors.New("proxy: port number out of range: " + portStr)
}
// the size here is just an estimate
buf := make([]byte, 0, 6+len(host))
buf = append(buf, proxy_socks5Version)
if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
buf = append(buf, 2 /* num auth methods */, proxy_socks5AuthNone, proxy_socks5AuthPassword)
} else {
buf = append(buf, 1 /* num auth methods */, proxy_socks5AuthNone)
}
if _, err := conn.Write(buf); err != nil {
return errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
return errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if buf[0] != 5 {
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
}
if buf[1] == 0xff {
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
}
// See RFC 1929
if buf[1] == proxy_socks5AuthPassword {
buf = buf[:0]
buf = append(buf, 1 /* password protocol version */)
buf = append(buf, uint8(len(s.user)))
buf = append(buf, s.user...)
buf = append(buf, uint8(len(s.password)))
buf = append(buf, s.password...)
if _, err := conn.Write(buf); err != nil {
return errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
return errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if buf[1] != 0 {
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
}
}
buf = buf[:0]
buf = append(buf, proxy_socks5Version, proxy_socks5Connect, 0 /* reserved */)
if ip := net.ParseIP(host); ip != nil {
if ip4 := ip.To4(); ip4 != nil {
buf = append(buf, proxy_socks5IP4)
ip = ip4
} else {
buf = append(buf, proxy_socks5IP6)
}
buf = append(buf, ip...)
} else {
if len(host) > 255 {
return errors.New("proxy: destination host name too long: " + host)
}
buf = append(buf, proxy_socks5Domain)
buf = append(buf, byte(len(host)))
buf = append(buf, host...)
}
buf = append(buf, byte(port>>8), byte(port))
if _, err := conn.Write(buf); err != nil {
return errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
if _, err := io.ReadFull(conn, buf[:4]); err != nil {
return errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
failure := "unknown error"
if int(buf[1]) < len(proxy_socks5Errors) {
failure = proxy_socks5Errors[buf[1]]
}
if len(failure) > 0 {
return errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
}
bytesToDiscard := 0
switch buf[3] {
case proxy_socks5IP4:
bytesToDiscard = net.IPv4len
case proxy_socks5IP6:
bytesToDiscard = net.IPv6len
case proxy_socks5Domain:
_, err := io.ReadFull(conn, buf[:1])
if err != nil {
return errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
bytesToDiscard = int(buf[0])
default:
return errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
}
if cap(buf) < bytesToDiscard {
buf = make([]byte, bytesToDiscard)
} else {
buf = buf[:bytesToDiscard]
}
if _, err := io.ReadFull(conn, buf); err != nil {
return errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
// Also need to discard the port number
if _, err := io.ReadFull(conn, buf[:2]); err != nil {
return errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
}
return nil
}

2
vendor/modules.txt vendored
View file

@ -375,7 +375,7 @@ github.com/gorilla/securecookie
# github.com/gorilla/sessions v1.2.2
## explicit; go 1.20
github.com/gorilla/sessions
# github.com/gorilla/websocket v1.5.1
# github.com/gorilla/websocket v1.5.2
## explicit; go 1.20
github.com/gorilla/websocket
# github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.1