mirror of https://github.com/tailscale/tailscale/
cmd/tailscale: combine serve and funnel for debug wip funnel stream model (#9169)
> **Note** > Behind the `TAILSCALE_USE_WIP_CODE` flag In preparing for incoming CLI changes, this PR merges the code path for the `serve` and `funnel` subcommands. See the parent issue for more context. The following commands will run in foreground mode when using the environment flag. ``` tailscale serve localhost:3000 tailscae funnel localhost:3000 ``` Replaces #9134 Updates #8489 Signed-off-by: Tyler Smalley <tyler@tailscale.com> Signed-off-by: Marwan Sulaiman <marwan@tailscale.com> Co-authored-by: Marwan Sulaiman <marwan@tailscale.com>pull/9098/merge
Tyler Smalley
1 year ago
committed by
GitHub
parent
003e4aff71
commit
e1fbb5457b
@ -1,112 +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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package cli
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import (
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"context"
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"flag"
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"fmt"
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"io"
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"os"
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"strconv"
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"strings"
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"github.com/peterbourgon/ff/v3/ffcli"
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"tailscale.com/ipn"
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)
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// newFunnelDevCommand returns a new "funnel" subcommand using e as its environment.
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// The funnel subcommand is used to turn on/off the Funnel service.
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// Funnel is off by default.
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// Funnel allows you to publish a 'tailscale serve' server publicly,
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// open to the entire internet.
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// newFunnelCommand shares the same serveEnv as the "serve" subcommand.
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// See newServeCommand and serve.go for more details.
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func newFunnelDevCommand(e *serveEnv) *ffcli.Command {
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return &ffcli.Command{
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Name: "funnel",
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ShortHelp: "Turn on/off Funnel service",
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ShortUsage: strings.Join([]string{
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"funnel <port>",
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"funnel status [--json]",
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}, "\n "),
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LongHelp: strings.Join([]string{
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"Funnel allows you to expose your local",
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"server publicly to the entire internet.",
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"Note that it only supports https servers at this point.",
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"This command is in development and is unsupported",
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}, "\n"),
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Exec: e.runFunnelDev,
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UsageFunc: usageFunc,
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Subcommands: []*ffcli.Command{
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{
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Name: "status",
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Exec: e.runServeStatus,
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ShortHelp: "show current serve/Funnel status",
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FlagSet: e.newFlags("funnel-status", func(fs *flag.FlagSet) {
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fs.BoolVar(&e.json, "json", false, "output JSON")
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}),
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UsageFunc: usageFunc,
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},
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},
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}
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}
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// runFunnelDev is the entry point for the "tailscale funnel" subcommand and
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// manages turning on/off Funnel. Funnel is off by default.
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//
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// Note: funnel is only supported on single DNS name for now. (2023-08-18)
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func (e *serveEnv) runFunnelDev(ctx context.Context, args []string) error {
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if len(args) != 1 {
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return flag.ErrHelp
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}
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var source string
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port64, err := strconv.ParseUint(args[0], 10, 16)
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if err == nil {
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source = fmt.Sprintf("http://127.0.0.1:%d", port64)
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} else {
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source, err = expandProxyTarget(args[0])
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}
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if err != nil {
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return err
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}
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st, err := e.getLocalClientStatusWithoutPeers(ctx)
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if err != nil {
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return fmt.Errorf("getting client status: %w", err)
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}
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if err := e.verifyFunnelEnabled(ctx, st, 443); err != nil {
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return err
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}
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dnsName := strings.TrimSuffix(st.Self.DNSName, ".")
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hp := ipn.HostPort(dnsName + ":443") // TODO(marwan-at-work): support the 2 other ports
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// In the streaming case, the process stays running in the
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// foreground and prints out connections to the HostPort.
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//
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// The local backend handles updating the ServeConfig as
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// necessary, then restores it to its original state once
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// the process's context is closed or the client turns off
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// Tailscale.
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return e.streamServe(ctx, ipn.ServeStreamRequest{
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HostPort: hp,
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Source: source,
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MountPoint: "/", // TODO(marwan-at-work): support multiple mount points
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})
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}
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func (e *serveEnv) streamServe(ctx context.Context, req ipn.ServeStreamRequest) error {
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stream, err := e.lc.StreamServe(ctx, req)
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if err != nil {
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return err
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}
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defer stream.Close()
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fmt.Fprintf(os.Stderr, "Funnel started on \"https://%s\".\n", strings.TrimSuffix(string(req.HostPort), ":443"))
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fmt.Fprintf(os.Stderr, "Press Ctrl-C to stop Funnel.\n\n")
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_, err = io.Copy(os.Stdout, stream)
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return err
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}
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@ -0,0 +1,147 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package cli
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import (
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"context"
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"flag"
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"fmt"
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"io"
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"log"
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"os"
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"os/signal"
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"strconv"
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"strings"
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"github.com/peterbourgon/ff/v3/ffcli"
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"tailscale.com/ipn"
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)
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type execFunc func(ctx context.Context, args []string) error
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type commandInfo struct {
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ShortHelp string
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LongHelp string
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}
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var infoMap = map[string]commandInfo{
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"serve": {
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ShortHelp: "Serve content and local servers on your tailnet",
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LongHelp: strings.Join([]string{
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"Serve lets you share a local server securely within your tailnet.",
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"To share a local server on the internet, use \"tailscale funnel\"",
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}, "\n"),
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},
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"funnel": {
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ShortHelp: "Serve content and local servers on the internet",
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LongHelp: strings.Join([]string{
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"Funnel lets you share a local server on the internet using Tailscale.",
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"To share only within your tailnet, use \"tailscale serve\"",
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}, "\n"),
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},
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}
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// newServeDevCommand returns a new "serve" subcommand using e as its environment.
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func newServeDevCommand(e *serveEnv, subcmd string) *ffcli.Command {
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if subcmd != "serve" && subcmd != "funnel" {
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log.Fatalf("newServeDevCommand called with unknown subcmd %q", subcmd)
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}
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info := infoMap[subcmd]
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return &ffcli.Command{
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Name: subcmd,
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ShortHelp: info.ShortHelp,
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ShortUsage: strings.Join([]string{
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fmt.Sprintf("%s <target>", subcmd),
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fmt.Sprintf("%s status [--json]", subcmd),
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fmt.Sprintf("%s reset", subcmd),
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}, "\n "),
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LongHelp: info.LongHelp,
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Exec: e.runServeDev(subcmd == "funnel"),
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UsageFunc: usageFunc,
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Subcommands: []*ffcli.Command{
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// TODO(tyler+marwan-at-work) Implement set, unset, and logs subcommands
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{
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Name: "status",
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Exec: e.runServeStatus,
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ShortHelp: "view current proxy configuration",
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FlagSet: e.newFlags("serve-status", func(fs *flag.FlagSet) {
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fs.BoolVar(&e.json, "json", false, "output JSON")
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}),
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UsageFunc: usageFunc,
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},
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{
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Name: "reset",
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ShortHelp: "reset current serve/funnel config",
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Exec: e.runServeReset,
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FlagSet: e.newFlags("serve-reset", nil),
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UsageFunc: usageFunc,
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},
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},
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}
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}
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// runServeDev is the entry point for the "tailscale {serve,funnel}" commands.
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func (e *serveEnv) runServeDev(funnel bool) execFunc {
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return func(ctx context.Context, args []string) error {
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ctx, cancel := signal.NotifyContext(ctx, os.Interrupt)
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defer cancel()
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if len(args) != 1 {
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return flag.ErrHelp
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}
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var source string
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port64, err := strconv.ParseUint(args[0], 10, 16)
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if err == nil {
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source = fmt.Sprintf("http://127.0.0.1:%d", port64)
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} else {
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source, err = expandProxyTarget(args[0])
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}
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if err != nil {
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return err
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}
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st, err := e.getLocalClientStatusWithoutPeers(ctx)
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if err != nil {
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return fmt.Errorf("getting client status: %w", err)
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}
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if funnel {
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if err := e.verifyFunnelEnabled(ctx, st, 443); err != nil {
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return err
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}
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}
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dnsName := strings.TrimSuffix(st.Self.DNSName, ".")
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hp := ipn.HostPort(dnsName + ":443") // TODO(marwan-at-work): support the 2 other ports
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// In the streaming case, the process stays running in the
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// foreground and prints out connections to the HostPort.
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//
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// The local backend handles updating the ServeConfig as
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// necessary, then restores it to its original state once
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// the process's context is closed or the client turns off
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// Tailscale.
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// TODO(tyler+marwan-at-work) support flag to run in the background
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return e.streamServe(ctx, ipn.ServeStreamRequest{
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Funnel: funnel,
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HostPort: hp,
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Source: source,
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MountPoint: "/", // TODO(marwan-at-work): support multiple mount points
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})
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}
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}
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func (e *serveEnv) streamServe(ctx context.Context, req ipn.ServeStreamRequest) error {
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stream, err := e.lc.StreamServe(ctx, req)
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if err != nil {
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return err
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}
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defer stream.Close()
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fmt.Fprintf(os.Stderr, "Serve started on \"https://%s\".\n", strings.TrimSuffix(string(req.HostPort), ":443"))
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fmt.Fprintf(os.Stderr, "Press Ctrl-C to stop.\n\n")
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_, err = io.Copy(os.Stdout, stream)
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return err
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}
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