Update dependencies
This commit is contained in:
16
vendor/tailscale.com/control/controlhttp/client.go
generated
vendored
16
vendor/tailscale.com/control/controlhttp/client.go
generated
vendored
@@ -38,6 +38,7 @@ import (
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"time"
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"tailscale.com/control/controlbase"
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"tailscale.com/control/controlhttp/controlhttpcommon"
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"tailscale.com/envknob"
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"tailscale.com/health"
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"tailscale.com/net/dnscache"
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@@ -95,6 +96,9 @@ func (a *Dialer) httpsFallbackDelay() time.Duration {
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var _ = envknob.RegisterBool("TS_USE_CONTROL_DIAL_PLAN") // to record at init time whether it's in use
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func (a *Dialer) dial(ctx context.Context) (*ClientConn, error) {
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a.logPort80Failure.Store(true)
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// If we don't have a dial plan, just fall back to dialing the single
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// host we know about.
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useDialPlan := envknob.BoolDefaultTrue("TS_USE_CONTROL_DIAL_PLAN")
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@@ -277,7 +281,9 @@ func (d *Dialer) forceNoise443() bool {
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// This heuristic works around networks where port 80 is MITMed and
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// appears to work for a bit post-Upgrade but then gets closed,
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// such as seen in https://github.com/tailscale/tailscale/issues/13597.
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d.logf("controlhttp: forcing port 443 dial due to recent noise dial")
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if d.logPort80Failure.CompareAndSwap(true, false) {
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d.logf("controlhttp: forcing port 443 dial due to recent noise dial")
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}
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return true
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}
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@@ -571,9 +577,9 @@ func (a *Dialer) tryURLUpgrade(ctx context.Context, u *url.URL, optAddr netip.Ad
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Method: "POST",
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URL: u,
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Header: http.Header{
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"Upgrade": []string{upgradeHeaderValue},
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"Connection": []string{"upgrade"},
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handshakeHeaderName: []string{base64.StdEncoding.EncodeToString(init)},
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"Upgrade": []string{controlhttpcommon.UpgradeHeaderValue},
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"Connection": []string{"upgrade"},
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controlhttpcommon.HandshakeHeaderName: []string{base64.StdEncoding.EncodeToString(init)},
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},
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}
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req = req.WithContext(ctx)
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@@ -597,7 +603,7 @@ func (a *Dialer) tryURLUpgrade(ctx context.Context, u *url.URL, optAddr netip.Ad
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return nil, fmt.Errorf("httptrace didn't provide a connection")
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}
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if next := resp.Header.Get("Upgrade"); next != upgradeHeaderValue {
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if next := resp.Header.Get("Upgrade"); next != controlhttpcommon.UpgradeHeaderValue {
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resp.Body.Close()
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return nil, fmt.Errorf("server switched to unexpected protocol %q", next)
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}
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5
vendor/tailscale.com/control/controlhttp/client_js.go
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5
vendor/tailscale.com/control/controlhttp/client_js.go
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@@ -12,6 +12,7 @@ import (
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"github.com/coder/websocket"
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"tailscale.com/control/controlbase"
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"tailscale.com/control/controlhttp/controlhttpcommon"
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"tailscale.com/net/wsconn"
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)
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@@ -42,11 +43,11 @@ func (d *Dialer) Dial(ctx context.Context) (*ClientConn, error) {
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// Can't set HTTP headers on the websocket request, so we have to to send
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// the handshake via an HTTP header.
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RawQuery: url.Values{
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handshakeHeaderName: []string{base64.StdEncoding.EncodeToString(init)},
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controlhttpcommon.HandshakeHeaderName: []string{base64.StdEncoding.EncodeToString(init)},
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}.Encode(),
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}
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wsConn, _, err := websocket.Dial(ctx, wsURL.String(), &websocket.DialOptions{
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Subprotocols: []string{upgradeHeaderValue},
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Subprotocols: []string{controlhttpcommon.UpgradeHeaderValue},
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})
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if err != nil {
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return nil, err
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17
vendor/tailscale.com/control/controlhttp/constants.go
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17
vendor/tailscale.com/control/controlhttp/constants.go
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@@ -6,6 +6,7 @@ package controlhttp
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import (
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"net/http"
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"net/url"
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"sync/atomic"
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"time"
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"tailscale.com/health"
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@@ -18,15 +19,6 @@ import (
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)
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const (
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// upgradeHeader is the value of the Upgrade HTTP header used to
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// indicate the Tailscale control protocol.
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upgradeHeaderValue = "tailscale-control-protocol"
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// handshakeHeaderName is the HTTP request header that can
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// optionally contain base64-encoded initial handshake
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// payload, to save an RTT.
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handshakeHeaderName = "X-Tailscale-Handshake"
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// serverUpgradePath is where the server-side HTTP handler to
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// to do the protocol switch is located.
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serverUpgradePath = "/ts2021"
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@@ -85,6 +77,8 @@ type Dialer struct {
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// dropped.
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Logf logger.Logf
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// NetMon is the [netmon.Monitor] to use for this Dialer. It must be
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// non-nil.
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NetMon *netmon.Monitor
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// HealthTracker, if non-nil, is the health tracker to use.
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@@ -97,6 +91,11 @@ type Dialer struct {
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proxyFunc func(*http.Request) (*url.URL, error) // or nil
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// logPort80Failure is whether we should log about port 80 interceptions
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// and forcing a port 443 dial. We do this only once per "dial" method
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// which can result in many concurrent racing dialHost calls.
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logPort80Failure atomic.Bool
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// For tests only
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drainFinished chan struct{}
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omitCertErrorLogging bool
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15
vendor/tailscale.com/control/controlhttp/controlhttpcommon/controlhttpcommon.go
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Normal file
15
vendor/tailscale.com/control/controlhttp/controlhttpcommon/controlhttpcommon.go
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Normal file
@@ -0,0 +1,15 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package controlhttpcommon contains common constants for used
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// by the controlhttp client and controlhttpserver packages.
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package controlhttpcommon
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// UpgradeHeader is the value of the Upgrade HTTP header used to
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// indicate the Tailscale control protocol.
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const UpgradeHeaderValue = "tailscale-control-protocol"
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// handshakeHeaderName is the HTTP request header that can
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// optionally contain base64-encoded initial handshake
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// payload, to save an RTT.
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const HandshakeHeaderName = "X-Tailscale-Handshake"
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217
vendor/tailscale.com/control/controlhttp/server.go
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217
vendor/tailscale.com/control/controlhttp/server.go
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@@ -1,217 +0,0 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !ios
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package controlhttp
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import (
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"context"
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"encoding/base64"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"strings"
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"time"
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"github.com/coder/websocket"
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"tailscale.com/control/controlbase"
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"tailscale.com/net/netutil"
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"tailscale.com/net/wsconn"
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"tailscale.com/types/key"
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)
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// AcceptHTTP upgrades the HTTP request given by w and r into a Tailscale
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// control protocol base transport connection.
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//
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// AcceptHTTP always writes an HTTP response to w. The caller must not attempt
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// their own response after calling AcceptHTTP.
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//
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// earlyWrite optionally specifies a func to write to the noise connection
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// (encrypted). It receives the negotiated version and a writer to write to, if
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// desired.
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func AcceptHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request, private key.MachinePrivate, earlyWrite func(protocolVersion int, w io.Writer) error) (*controlbase.Conn, error) {
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return acceptHTTP(ctx, w, r, private, earlyWrite)
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}
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func acceptHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request, private key.MachinePrivate, earlyWrite func(protocolVersion int, w io.Writer) error) (_ *controlbase.Conn, retErr error) {
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next := strings.ToLower(r.Header.Get("Upgrade"))
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if next == "" {
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http.Error(w, "missing next protocol", http.StatusBadRequest)
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return nil, errors.New("no next protocol in HTTP request")
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}
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if next == "websocket" {
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return acceptWebsocket(ctx, w, r, private)
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}
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if next != upgradeHeaderValue {
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http.Error(w, "unknown next protocol", http.StatusBadRequest)
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return nil, fmt.Errorf("client requested unhandled next protocol %q", next)
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}
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initB64 := r.Header.Get(handshakeHeaderName)
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if initB64 == "" {
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http.Error(w, "missing Tailscale handshake header", http.StatusBadRequest)
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return nil, errors.New("no tailscale handshake header in HTTP request")
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}
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init, err := base64.StdEncoding.DecodeString(initB64)
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if err != nil {
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http.Error(w, "invalid tailscale handshake header", http.StatusBadRequest)
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return nil, fmt.Errorf("decoding base64 handshake header: %v", err)
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}
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hijacker, ok := w.(http.Hijacker)
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if !ok {
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http.Error(w, "make request over HTTP/1", http.StatusBadRequest)
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return nil, errors.New("can't hijack client connection")
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}
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w.Header().Set("Upgrade", upgradeHeaderValue)
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w.Header().Set("Connection", "upgrade")
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w.WriteHeader(http.StatusSwitchingProtocols)
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conn, brw, err := hijacker.Hijack()
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if err != nil {
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return nil, fmt.Errorf("hijacking client connection: %w", err)
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}
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defer func() {
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if retErr != nil {
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conn.Close()
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}
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}()
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if err := brw.Flush(); err != nil {
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return nil, fmt.Errorf("flushing hijacked HTTP buffer: %w", err)
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}
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conn = netutil.NewDrainBufConn(conn, brw.Reader)
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cwc := newWriteCorkingConn(conn)
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nc, err := controlbase.Server(ctx, cwc, private, init)
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if err != nil {
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return nil, fmt.Errorf("noise handshake failed: %w", err)
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}
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if earlyWrite != nil {
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if deadline, ok := ctx.Deadline(); ok {
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if err := conn.SetDeadline(deadline); err != nil {
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return nil, fmt.Errorf("setting conn deadline: %w", err)
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}
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defer conn.SetDeadline(time.Time{})
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}
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if err := earlyWrite(nc.ProtocolVersion(), nc); err != nil {
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return nil, err
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}
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}
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if err := cwc.uncork(); err != nil {
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return nil, err
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}
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return nc, nil
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}
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// acceptWebsocket upgrades a WebSocket connection (from a client that cannot
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// speak HTTP) to a Tailscale control protocol base transport connection.
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func acceptWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request, private key.MachinePrivate) (*controlbase.Conn, error) {
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c, err := websocket.Accept(w, r, &websocket.AcceptOptions{
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Subprotocols: []string{upgradeHeaderValue},
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OriginPatterns: []string{"*"},
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// Disable compression because we transmit Noise messages that are not
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// compressible.
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// Additionally, Safari has a broken implementation of compression
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// (see https://github.com/nhooyr/websocket/issues/218) that makes
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// enabling it actively harmful.
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CompressionMode: websocket.CompressionDisabled,
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})
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if err != nil {
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return nil, fmt.Errorf("Could not accept WebSocket connection %v", err)
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}
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if c.Subprotocol() != upgradeHeaderValue {
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c.Close(websocket.StatusPolicyViolation, "client must speak the control subprotocol")
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return nil, fmt.Errorf("Unexpected subprotocol %q", c.Subprotocol())
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}
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if err := r.ParseForm(); err != nil {
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c.Close(websocket.StatusPolicyViolation, "Could not parse parameters")
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return nil, fmt.Errorf("parse query parameters: %v", err)
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}
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initB64 := r.Form.Get(handshakeHeaderName)
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if initB64 == "" {
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c.Close(websocket.StatusPolicyViolation, "missing Tailscale handshake parameter")
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return nil, errors.New("no tailscale handshake parameter in HTTP request")
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}
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init, err := base64.StdEncoding.DecodeString(initB64)
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if err != nil {
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c.Close(websocket.StatusPolicyViolation, "invalid tailscale handshake parameter")
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return nil, fmt.Errorf("decoding base64 handshake parameter: %v", err)
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}
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conn := wsconn.NetConn(ctx, c, websocket.MessageBinary, r.RemoteAddr)
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nc, err := controlbase.Server(ctx, conn, private, init)
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if err != nil {
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conn.Close()
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return nil, fmt.Errorf("noise handshake failed: %w", err)
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}
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return nc, nil
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}
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// corkConn is a net.Conn wrapper that initially buffers all writes until uncork
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// is called. If the conn is corked and a Read occurs, the Read will flush any
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// buffered (corked) write.
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//
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// Until uncorked, Read/Write/uncork may be not called concurrently.
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//
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// Deadlines still work, but a corked write ignores deadlines until a Read or
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// uncork goes to do that Write.
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//
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// Use newWriteCorkingConn to create one.
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type corkConn struct {
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net.Conn
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corked bool
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buf []byte // corked data
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}
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func newWriteCorkingConn(c net.Conn) *corkConn {
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return &corkConn{Conn: c, corked: true}
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}
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func (c *corkConn) Write(b []byte) (int, error) {
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if c.corked {
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c.buf = append(c.buf, b...)
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return len(b), nil
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}
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return c.Conn.Write(b)
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}
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func (c *corkConn) Read(b []byte) (int, error) {
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if c.corked {
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if err := c.flush(); err != nil {
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return 0, err
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}
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}
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return c.Conn.Read(b)
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}
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// uncork flushes any buffered data and uncorks the connection so future Writes
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// don't buffer. It may not be called concurrently with reads or writes and
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// may only be called once.
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func (c *corkConn) uncork() error {
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if !c.corked {
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panic("usage error; uncork called twice") // worth panicking to catch misuse
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}
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err := c.flush()
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c.corked = false
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return err
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}
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func (c *corkConn) flush() error {
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if len(c.buf) == 0 {
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return nil
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}
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_, err := c.Conn.Write(c.buf)
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c.buf = nil
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return err
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}
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Reference in New Issue
Block a user