[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

@ -24,4 +24,4 @@ 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.
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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