1082 lines
32 KiB
Go
1082 lines
32 KiB
Go
package tunnel
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import (
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"bufio"
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"context"
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"fmt"
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"io/ioutil"
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"net/url"
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"os"
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"reflect"
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"runtime/trace"
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"strings"
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"sync"
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"time"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/cliutil"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/ui"
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"github.com/cloudflare/cloudflared/cmd/cloudflared/updater"
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"github.com/cloudflare/cloudflared/connection"
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"github.com/cloudflare/cloudflared/dbconnect"
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"github.com/cloudflare/cloudflared/ingress"
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"github.com/cloudflare/cloudflared/logger"
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"github.com/cloudflare/cloudflared/metrics"
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"github.com/cloudflare/cloudflared/origin"
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"github.com/cloudflare/cloudflared/signal"
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"github.com/cloudflare/cloudflared/tlsconfig"
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"github.com/cloudflare/cloudflared/tunneldns"
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"github.com/cloudflare/cloudflared/tunnelstore"
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"github.com/coreos/go-systemd/daemon"
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"github.com/facebookgo/grace/gracenet"
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"github.com/getsentry/raven-go"
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"github.com/google/uuid"
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"github.com/mitchellh/go-homedir"
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"github.com/pkg/errors"
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"github.com/urfave/cli/v2"
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"github.com/urfave/cli/v2/altsrc"
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)
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const (
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sentryDSN = "https://56a9c9fa5c364ab28f34b14f35ea0f1b:3e8827f6f9f740738eb11138f7bebb68@sentry.io/189878"
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sshLogFileDirectory = "/usr/local/var/log/cloudflared/"
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// sshPortFlag is the port on localhost the cloudflared ssh server will run on
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sshPortFlag = "local-ssh-port"
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// sshIdleTimeoutFlag defines the duration a SSH session can remain idle before being closed
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sshIdleTimeoutFlag = "ssh-idle-timeout"
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// sshMaxTimeoutFlag defines the max duration a SSH session can remain open for
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sshMaxTimeoutFlag = "ssh-max-timeout"
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// bucketNameFlag is the bucket name to use for the SSH log uploader
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bucketNameFlag = "bucket-name"
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// regionNameFlag is the AWS region name to use for the SSH log uploader
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regionNameFlag = "region-name"
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// secretIDFlag is the Secret id of SSH log uploader
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secretIDFlag = "secret-id"
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// accessKeyIDFlag is the Access key id of SSH log uploader
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accessKeyIDFlag = "access-key-id"
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// sessionTokenIDFlag is the Session token of SSH log uploader
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sessionTokenIDFlag = "session-token"
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// s3URLFlag is the S3 URL of SSH log uploader (e.g. don't use AWS s3 and use google storage bucket instead)
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s3URLFlag = "s3-url-host"
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// hostKeyPath is the path of the dir to save SSH host keys too
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hostKeyPath = "host-key-path"
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// uiFlag is to enable launching cloudflared in interactive UI mode
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uiFlag = "ui"
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logDirectoryFlag = "log-directory"
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debugLevelWarning = "At debug level, request URL, method, protocol, content legnth and header will be logged. " +
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"Response status, content length and header will also be logged in debug level."
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)
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var (
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shutdownC chan struct{}
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graceShutdownC chan struct{}
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version string
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)
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func Flags() []cli.Flag {
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return tunnelFlags(true)
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}
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func Commands() []*cli.Command {
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subcommands := []*cli.Command{
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buildLoginSubcommand(false),
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buildCreateCommand(),
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buildRouteCommand(),
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buildRunCommand(),
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buildListCommand(),
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buildIngressSubcommand(),
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buildDeleteCommand(),
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buildCleanupCommand(),
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// for compatibility, allow following as tunnel subcommands
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tunneldns.Command(true),
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dbConnectCmd(),
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}
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return []*cli.Command{
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buildTunnelCommand(subcommands),
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// for compatibility, allow following as top-level subcommands
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buildLoginSubcommand(true),
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dbConnectCmd(),
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}
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}
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func buildTunnelCommand(subcommands []*cli.Command) *cli.Command {
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return &cli.Command{
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Name: "tunnel",
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Action: cliutil.ErrorHandler(TunnelCommand),
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Before: SetFlagsFromConfigFile,
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Category: "Tunnel",
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Usage: "Make a locally-running web service accessible over the internet using Argo Tunnel.",
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ArgsUsage: " ",
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Description: `Argo Tunnel asks you to specify a hostname on a Cloudflare-powered
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domain you control and a local address. Traffic from that hostname is routed
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(optionally via a Cloudflare Load Balancer) to this machine and appears on the
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specified port where it can be served.
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This feature requires your Cloudflare account be subscribed to the Argo Smart Routing feature.
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To use, begin by calling login to download a certificate:
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$ cloudflared tunnel login
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With your certificate installed you can then launch your first tunnel,
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replacing my.site.com with a subdomain of your site:
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$ cloudflared tunnel --hostname my.site.com --url http://localhost:8080
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If you have a web server running on port 8080 (in this example), it will be available on
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the internet!`,
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Subcommands: subcommands,
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Flags: tunnelFlags(false),
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}
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}
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func TunnelCommand(c *cli.Context) error {
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sc, err := newSubcommandContext(c)
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if err != nil {
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return err
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}
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if name := c.String("name"); name != "" { // Start a named tunnel
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return runAdhocNamedTunnel(sc, name)
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}
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if ref := config.GetConfiguration().TunnelID; ref != "" {
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return fmt.Errorf("Use `cloudflared tunnel run` to start tunnel %s", ref)
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}
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// Start a classic tunnel
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return runClassicTunnel(sc)
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}
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func Init(v string, s, g chan struct{}) {
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version, shutdownC, graceShutdownC = v, s, g
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}
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// runAdhocNamedTunnel create, route and run a named tunnel in one command
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func runAdhocNamedTunnel(sc *subcommandContext, name string) error {
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tunnel, ok, err := sc.tunnelActive(name)
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if err != nil || !ok {
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tunnel, err = sc.create(name)
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if err != nil {
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return errors.Wrap(err, "failed to create tunnel")
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}
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} else {
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sc.logger.Infof("Tunnel already created with ID %s", tunnel.ID)
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}
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if r, ok := routeFromFlag(sc.c); ok {
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if res, err := sc.route(tunnel.ID, r); err != nil {
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sc.logger.Errorf("failed to create route, please create it manually. err: %v.", err)
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} else {
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sc.logger.Infof(res.SuccessSummary())
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}
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}
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if err := sc.run(tunnel.ID); err != nil {
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return errors.Wrap(err, "error running tunnel")
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}
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return nil
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}
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// runClassicTunnel creates a "classic" non-named tunnel
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func runClassicTunnel(sc *subcommandContext) error {
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return StartServer(sc.c, version, shutdownC, graceShutdownC, nil, sc.logger, sc.isUIEnabled)
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}
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func routeFromFlag(c *cli.Context) (tunnelstore.Route, bool) {
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if hostname := c.String("hostname"); hostname != "" {
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if lbPool := c.String("lb-pool"); lbPool != "" {
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return tunnelstore.NewLBRoute(hostname, lbPool), true
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}
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return tunnelstore.NewDNSRoute(hostname), true
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}
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return nil, false
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}
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func createLogger(c *cli.Context, isTransport bool, disableTerminal bool) (*logger.OutputWriter, error) {
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var loggerOpts []logger.Option
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logPath := c.String("logfile")
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if logPath == "" {
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logPath = c.String(logDirectoryFlag)
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}
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if logPath != "" {
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loggerOpts = append(loggerOpts, logger.DefaultFile(logPath))
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}
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logLevel := c.String("loglevel")
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if isTransport {
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logLevel = c.String("transport-loglevel")
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if logLevel == "" {
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logLevel = "fatal"
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}
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}
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loggerOpts = append(loggerOpts, logger.LogLevelString(logLevel))
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if disableTerminal {
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disableOption := logger.DisableTerminal(true)
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loggerOpts = append(loggerOpts, disableOption)
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}
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l, err := logger.New(loggerOpts...)
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if err != nil {
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return nil, err
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}
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return l, nil
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}
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func StartServer(
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c *cli.Context,
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version string,
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shutdownC,
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graceShutdownC chan struct{},
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namedTunnel *connection.NamedTunnelConfig,
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log logger.Service,
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isUIEnabled bool,
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) error {
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_ = raven.SetDSN(sentryDSN)
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var wg sync.WaitGroup
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listeners := gracenet.Net{}
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errC := make(chan error)
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connectedSignal := signal.New(make(chan struct{}))
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dnsReadySignal := make(chan struct{})
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if config.GetConfiguration().Source() == "" {
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log.Infof(config.ErrNoConfigFile.Error())
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}
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if c.IsSet("trace-output") {
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tmpTraceFile, err := ioutil.TempFile("", "trace")
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if err != nil {
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log.Errorf("Failed to create new temporary file to save trace output: %s", err)
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}
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defer func() {
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if err := tmpTraceFile.Close(); err != nil {
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log.Errorf("Failed to close trace output file %s with error: %s", tmpTraceFile.Name(), err)
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}
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if err := os.Rename(tmpTraceFile.Name(), c.String("trace-output")); err != nil {
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log.Errorf("Failed to rename temporary trace output file %s to %s with error: %s", tmpTraceFile.Name(), c.String("trace-output"), err)
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} else {
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err := os.Remove(tmpTraceFile.Name())
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if err != nil {
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log.Errorf("Failed to remove the temporary trace file %s with error: %s", tmpTraceFile.Name(), err)
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}
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}
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}()
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if err := trace.Start(tmpTraceFile); err != nil {
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log.Errorf("Failed to start trace: %s", err)
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return errors.Wrap(err, "Error starting tracing")
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}
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defer trace.Stop()
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}
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buildInfo := buildinfo.GetBuildInfo(version)
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buildInfo.Log(log)
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logClientOptions(c, log)
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if c.IsSet("proxy-dns") {
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wg.Add(1)
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go func() {
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defer wg.Done()
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errC <- runDNSProxyServer(c, dnsReadySignal, shutdownC, log)
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}()
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} else {
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close(dnsReadySignal)
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}
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// Wait for proxy-dns to come up (if used)
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<-dnsReadySignal
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metricsListener, err := listeners.Listen("tcp", c.String("metrics"))
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if err != nil {
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log.Errorf("Error opening metrics server listener: %s", err)
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return errors.Wrap(err, "Error opening metrics server listener")
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}
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defer metricsListener.Close()
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wg.Add(1)
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go func() {
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defer wg.Done()
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errC <- metrics.ServeMetrics(metricsListener, shutdownC, log)
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}()
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go notifySystemd(connectedSignal)
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if c.IsSet("pidfile") {
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go writePidFile(connectedSignal, c.String("pidfile"), log)
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}
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cloudflaredID, err := uuid.NewRandom()
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if err != nil {
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log.Errorf("Cannot generate cloudflared ID: %s", err)
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return err
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}
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ctx, cancel := context.WithCancel(context.Background())
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go func() {
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<-shutdownC
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cancel()
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}()
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// update needs to be after DNS proxy is up to resolve equinox server address
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if updater.IsAutoupdateEnabled(c, log) {
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log.Infof("Autoupdate frequency is set to %v", c.Duration("autoupdate-freq"))
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wg.Add(1)
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go func() {
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defer wg.Done()
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autoupdater := updater.NewAutoUpdater(c.Duration("autoupdate-freq"), &listeners, log)
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errC <- autoupdater.Run(ctx)
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}()
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}
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// Serve DNS proxy stand-alone if no hostname or tag or app is going to run
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if dnsProxyStandAlone(c) {
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connectedSignal.Notify()
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// no grace period, handle SIGINT/SIGTERM immediately
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return waitToShutdown(&wg, errC, shutdownC, graceShutdownC, 0, log)
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}
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url := c.String("url")
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hostname := c.String("hostname")
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if url == hostname && url != "" && hostname != "" {
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errText := "hostname and url shouldn't match. See --help for more information"
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log.Error(errText)
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return fmt.Errorf(errText)
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}
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transportLogger, err := createLogger(c, true, false)
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if err != nil {
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return errors.Wrap(err, "error setting up transport logger")
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}
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tunnelConfig, ingressRules, err := prepareTunnelConfig(c, buildInfo, version, log, transportLogger, namedTunnel, isUIEnabled)
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if err != nil {
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return err
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}
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ingressRules.StartOrigins(&wg, log, shutdownC, errC)
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reconnectCh := make(chan origin.ReconnectSignal, 1)
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if c.IsSet("stdin-control") {
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log.Info("Enabling control through stdin")
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go stdinControl(reconnectCh, log)
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}
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wg.Add(1)
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go func() {
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defer wg.Done()
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errC <- origin.StartTunnelDaemon(ctx, tunnelConfig, connectedSignal, cloudflaredID, reconnectCh)
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}()
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if isUIEnabled {
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tunnelInfo := ui.NewUIModel(
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version,
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hostname,
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metricsListener.Addr().String(),
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&ingressRules,
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tunnelConfig.HAConnections,
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)
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logLevels, err := logger.ParseLevelString(c.String("loglevel"))
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if err != nil {
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return err
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}
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tunnelInfo.LaunchUI(ctx, log, logLevels, tunnelConfig.TunnelEventChan)
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}
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return waitToShutdown(&wg, errC, shutdownC, graceShutdownC, c.Duration("grace-period"), log)
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}
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// forceSetFlag attempts to set the given flag value in the closest context that has it defined
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func forceSetFlag(c *cli.Context, name, value string) {
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for _, ctx := range c.Lineage() {
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if err := ctx.Set(name, value); err == nil {
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break
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}
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}
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}
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func SetFlagsFromConfigFile(c *cli.Context) error {
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const exitCode = 1
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log, err := createLogger(c, false, false)
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if err != nil {
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return cliutil.PrintLoggerSetupError("error setting up logger", err)
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}
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inputSource, err := config.ReadConfigFile(c, log)
|
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if err != nil {
|
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if err == config.ErrNoConfigFile {
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return nil
|
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}
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return cli.Exit(err, exitCode)
|
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}
|
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targetFlags := c.Command.Flags
|
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if c.Command.Name == "" {
|
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targetFlags = c.App.Flags
|
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}
|
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if err := altsrc.ApplyInputSourceValues(c, inputSource, targetFlags); err != nil {
|
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return cli.Exit(err, exitCode)
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}
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return nil
|
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}
|
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|
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func waitToShutdown(wg *sync.WaitGroup,
|
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errC chan error,
|
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shutdownC, graceShutdownC chan struct{},
|
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gracePeriod time.Duration,
|
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logger logger.Service,
|
|
) error {
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var err error
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if gracePeriod > 0 {
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err = waitForSignalWithGraceShutdown(errC, shutdownC, graceShutdownC, gracePeriod, logger)
|
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} else {
|
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err = waitForSignal(errC, shutdownC, logger)
|
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close(graceShutdownC)
|
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}
|
|
|
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if err != nil {
|
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logger.Errorf("Quitting due to error: %s", err)
|
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} else {
|
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logger.Info("Quitting...")
|
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}
|
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// Wait for clean exit, discarding all errors
|
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go func() {
|
|
for range errC {
|
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}
|
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}()
|
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wg.Wait()
|
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return err
|
|
}
|
|
|
|
func notifySystemd(waitForSignal *signal.Signal) {
|
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<-waitForSignal.Wait()
|
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daemon.SdNotify(false, "READY=1")
|
|
}
|
|
|
|
func writePidFile(waitForSignal *signal.Signal, pidFile string, logger logger.Service) {
|
|
<-waitForSignal.Wait()
|
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expandedPath, err := homedir.Expand(pidFile)
|
|
if err != nil {
|
|
logger.Errorf("Unable to expand %s, try to use absolute path in --pidfile: %s", pidFile, err)
|
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return
|
|
}
|
|
file, err := os.Create(expandedPath)
|
|
if err != nil {
|
|
logger.Errorf("Unable to write pid to %s: %s", expandedPath, err)
|
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return
|
|
}
|
|
defer file.Close()
|
|
fmt.Fprintf(file, "%d", os.Getpid())
|
|
}
|
|
|
|
func hostnameFromURI(uri string) string {
|
|
u, err := url.Parse(uri)
|
|
if err != nil {
|
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return ""
|
|
}
|
|
switch u.Scheme {
|
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case "ssh":
|
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return addPortIfMissing(u, 22)
|
|
case "rdp":
|
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return addPortIfMissing(u, 3389)
|
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case "smb":
|
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return addPortIfMissing(u, 445)
|
|
case "tcp":
|
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return addPortIfMissing(u, 7864) // just a random port since there isn't a default in this case
|
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}
|
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return ""
|
|
}
|
|
|
|
func addPortIfMissing(uri *url.URL, port int) string {
|
|
if uri.Port() != "" {
|
|
return uri.Host
|
|
}
|
|
return fmt.Sprintf("%s:%d", uri.Hostname(), port)
|
|
}
|
|
|
|
func dbConnectCmd() *cli.Command {
|
|
cmd := dbconnect.Cmd()
|
|
|
|
// Append the tunnel commands so users can customize the daemon settings.
|
|
cmd.Flags = appendFlags(Flags(), cmd.Flags...)
|
|
|
|
// Override before to run tunnel validation before dbconnect validation.
|
|
cmd.Before = func(c *cli.Context) error {
|
|
err := SetFlagsFromConfigFile(c)
|
|
if err == nil {
|
|
err = dbconnect.CmdBefore(c)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Override action to setup the Proxy, then if successful, start the tunnel daemon.
|
|
cmd.Action = cliutil.ErrorHandler(func(c *cli.Context) error {
|
|
err := dbconnect.CmdAction(c)
|
|
if err == nil {
|
|
err = TunnelCommand(c)
|
|
}
|
|
return err
|
|
})
|
|
|
|
return cmd
|
|
}
|
|
|
|
// appendFlags will append extra flags to a slice of flags.
|
|
//
|
|
// The cli package will panic if two flags exist with the same name,
|
|
// so if extraFlags contains a flag that was already defined, modify the
|
|
// original flags to use the extra version.
|
|
func appendFlags(flags []cli.Flag, extraFlags ...cli.Flag) []cli.Flag {
|
|
for _, extra := range extraFlags {
|
|
var found bool
|
|
|
|
// Check if an extra flag overrides an existing flag.
|
|
for i, flag := range flags {
|
|
if reflect.DeepEqual(extra.Names(), flag.Names()) {
|
|
flags[i] = extra
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
|
|
// Append the extra flag if it has nothing to override.
|
|
if !found {
|
|
flags = append(flags, extra)
|
|
}
|
|
}
|
|
|
|
return flags
|
|
}
|
|
|
|
func tunnelFlags(shouldHide bool) []cli.Flag {
|
|
flags := configureCloudflaredFlags(shouldHide)
|
|
flags = append(flags, configureProxyFlags(shouldHide)...)
|
|
flags = append(flags, configureLoggingFlags(shouldHide)...)
|
|
flags = append(flags, configureProxyDNSFlags(shouldHide)...)
|
|
flags = append(flags, []cli.Flag{
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "is-autoupdated",
|
|
Usage: "Signal the new process that Argo Tunnel client has been autoupdated",
|
|
Value: false,
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
|
|
Name: "edge",
|
|
Usage: "Address of the Cloudflare tunnel server. Only works in Cloudflare's internal testing environment.",
|
|
EnvVars: []string{"TUNNEL_EDGE"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: tlsconfig.CaCertFlag,
|
|
Usage: "Certificate Authority authenticating connections with Cloudflare's edge network.",
|
|
EnvVars: []string{"TUNNEL_CACERT"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "hostname",
|
|
Usage: "Set a hostname on a Cloudflare zone to route traffic through this tunnel.",
|
|
EnvVars: []string{"TUNNEL_HOSTNAME"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "id",
|
|
Usage: "A unique identifier used to tie connections to this tunnel instance.",
|
|
EnvVars: []string{"TUNNEL_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "lb-pool",
|
|
Usage: "The name of a (new/existing) load balancing pool to add this origin to.",
|
|
EnvVars: []string{"TUNNEL_LB_POOL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "api-key",
|
|
Usage: "This parameter has been deprecated since version 2017.10.1.",
|
|
EnvVars: []string{"TUNNEL_API_KEY"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "api-email",
|
|
Usage: "This parameter has been deprecated since version 2017.10.1.",
|
|
EnvVars: []string{"TUNNEL_API_EMAIL"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "api-ca-key",
|
|
Usage: "This parameter has been deprecated since version 2017.10.1.",
|
|
EnvVars: []string{"TUNNEL_API_CA_KEY"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "api-url",
|
|
Usage: "Base URL for Cloudflare API v4",
|
|
EnvVars: []string{"TUNNEL_API_URL"},
|
|
Value: "https://api.cloudflare.com/client/v4",
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "metrics-update-freq",
|
|
Usage: "Frequency to update tunnel metrics",
|
|
Value: time.Second * 5,
|
|
EnvVars: []string{"TUNNEL_METRICS_UPDATE_FREQ"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
|
|
Name: "tag",
|
|
Usage: "Custom tags used to identify this tunnel, in format `KEY=VALUE`. Multiple tags may be specified",
|
|
EnvVars: []string{"TUNNEL_TAG"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "heartbeat-interval",
|
|
Usage: "Minimum idle time before sending a heartbeat.",
|
|
Value: time.Second * 5,
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewUint64Flag(&cli.Uint64Flag{
|
|
Name: "heartbeat-count",
|
|
Usage: "Minimum number of unacked heartbeats to send before closing the connection.",
|
|
Value: 5,
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewUintFlag(&cli.UintFlag{
|
|
Name: "retries",
|
|
Value: 5,
|
|
Usage: "Maximum number of retries for connection/protocol errors.",
|
|
EnvVars: []string{"TUNNEL_RETRIES"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewIntFlag(&cli.IntFlag{
|
|
Name: "ha-connections",
|
|
Value: 4,
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "grace-period",
|
|
Usage: "Duration to accept new requests after cloudflared receives first SIGINT/SIGTERM. A second SIGINT/SIGTERM will force cloudflared to shutdown immediately.",
|
|
Value: time.Second * 30,
|
|
EnvVars: []string{"TUNNEL_GRACE_PERIOD"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewUintFlag(&cli.UintFlag{
|
|
Name: "compression-quality",
|
|
Value: 0,
|
|
Usage: "(beta) Use cross-stream compression instead HTTP compression. 0-off, 1-low, 2-medium, >=3-high.",
|
|
EnvVars: []string{"TUNNEL_COMPRESSION_LEVEL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "use-reconnect-token",
|
|
Usage: "Test reestablishing connections with the new 'reconnect token' flow.",
|
|
Value: true,
|
|
EnvVars: []string{"TUNNEL_USE_RECONNECT_TOKEN"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "dial-edge-timeout",
|
|
Usage: "Maximum wait time to set up a connection with the edge",
|
|
Value: time.Second * 15,
|
|
EnvVars: []string{"DIAL_EDGE_TIMEOUT"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "stdin-control",
|
|
Usage: "Control the process using commands sent through stdin",
|
|
EnvVars: []string{"STDIN-CONTROL"},
|
|
Hidden: true,
|
|
Value: false,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "name",
|
|
Aliases: []string{"n"},
|
|
EnvVars: []string{"TUNNEL_NAME"},
|
|
Usage: "Stable name to identify the tunnel. Using this flag will create, route and run a tunnel. For production usage, execute each command separately",
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: uiFlag,
|
|
Usage: "Launch tunnel UI. Tunnel logs are scrollable via 'j', 'k', or arrow keys.",
|
|
Value: false,
|
|
Hidden: shouldHide,
|
|
}),
|
|
selectProtocolFlag,
|
|
}...)
|
|
|
|
return flags
|
|
}
|
|
|
|
// Flags in tunnel command that is relevant to run subcommand
|
|
func configureCloudflaredFlags(shouldHide bool) []cli.Flag {
|
|
return []cli.Flag{
|
|
&cli.StringFlag{
|
|
Name: "config",
|
|
Usage: "Specifies a config file in YAML format.",
|
|
Value: config.FindDefaultConfigPath(),
|
|
Hidden: shouldHide,
|
|
},
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "origincert",
|
|
Usage: "Path to the certificate generated for your origin when you run cloudflared login.",
|
|
EnvVars: []string{"TUNNEL_ORIGIN_CERT"},
|
|
Value: findDefaultOriginCertPath(),
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "autoupdate-freq",
|
|
Usage: fmt.Sprintf("Autoupdate frequency. Default is %v.", updater.DefaultCheckUpdateFreq),
|
|
Value: updater.DefaultCheckUpdateFreq,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "no-autoupdate",
|
|
Usage: "Disable periodic check for updates, restarting the server with the new version.",
|
|
EnvVars: []string{"NO_AUTOUPDATE"},
|
|
Value: false,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "metrics",
|
|
Value: "localhost:",
|
|
Usage: "Listen address for metrics reporting.",
|
|
EnvVars: []string{"TUNNEL_METRICS"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "pidfile",
|
|
Usage: "Write the application's PID to this file after first successful connection.",
|
|
EnvVars: []string{"TUNNEL_PIDFILE"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
}
|
|
}
|
|
|
|
func configureProxyFlags(shouldHide bool) []cli.Flag {
|
|
flags := []cli.Flag{
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "url",
|
|
Value: "http://localhost:8080",
|
|
Usage: "Connect to the local webserver at `URL`.",
|
|
EnvVars: []string{"TUNNEL_URL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "hello-world",
|
|
Value: false,
|
|
Usage: "Run Hello World Server",
|
|
EnvVars: []string{"TUNNEL_HELLO_WORLD"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: ingress.Socks5Flag,
|
|
Usage: "specify if this tunnel is running as a SOCK5 Server",
|
|
EnvVars: []string{"TUNNEL_SOCKS"},
|
|
Value: false,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: ingress.ProxyConnectTimeoutFlag,
|
|
Usage: "HTTP proxy timeout for establishing a new connection",
|
|
Value: time.Second * 30,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: ingress.ProxyTLSTimeoutFlag,
|
|
Usage: "HTTP proxy timeout for completing a TLS handshake",
|
|
Value: time.Second * 10,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: ingress.ProxyTCPKeepAlive,
|
|
Usage: "HTTP proxy TCP keepalive duration",
|
|
Value: time.Second * 30,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: ingress.ProxyNoHappyEyeballsFlag,
|
|
Usage: "HTTP proxy should disable \"happy eyeballs\" for IPv4/v6 fallback",
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewIntFlag(&cli.IntFlag{
|
|
Name: ingress.ProxyKeepAliveConnectionsFlag,
|
|
Usage: "HTTP proxy maximum keepalive connection pool size",
|
|
Value: 100,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: ingress.ProxyKeepAliveTimeoutFlag,
|
|
Usage: "HTTP proxy timeout for closing an idle connection",
|
|
Value: time.Second * 90,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "proxy-connection-timeout",
|
|
Usage: "DEPRECATED. No longer has any effect.",
|
|
Value: time.Second * 90,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: "proxy-expect-continue-timeout",
|
|
Usage: "DEPRECATED. No longer has any effect.",
|
|
Value: time.Second * 90,
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: ingress.HTTPHostHeaderFlag,
|
|
Usage: "Sets the HTTP Host header for the local webserver.",
|
|
EnvVars: []string{"TUNNEL_HTTP_HOST_HEADER"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: ingress.OriginServerNameFlag,
|
|
Usage: "Hostname on the origin server certificate.",
|
|
EnvVars: []string{"TUNNEL_ORIGIN_SERVER_NAME"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "unix-socket",
|
|
Usage: "Path to unix socket to use instead of --url",
|
|
EnvVars: []string{"TUNNEL_UNIX_SOCKET"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: tlsconfig.OriginCAPoolFlag,
|
|
Usage: "Path to the CA for the certificate of your origin. This option should be used only if your certificate is not signed by Cloudflare.",
|
|
EnvVars: []string{"TUNNEL_ORIGIN_CA_POOL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: ingress.NoTLSVerifyFlag,
|
|
Usage: "Disables TLS verification of the certificate presented by your origin. Will allow any certificate from the origin to be accepted. Note: The connection from your machine to Cloudflare's Edge is still encrypted.",
|
|
EnvVars: []string{"NO_TLS_VERIFY"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: ingress.NoChunkedEncodingFlag,
|
|
Usage: "Disables chunked transfer encoding; useful if you are running a WSGI server.",
|
|
EnvVars: []string{"TUNNEL_NO_CHUNKED_ENCODING"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
}
|
|
return append(flags, sshFlags(shouldHide)...)
|
|
}
|
|
|
|
func sshFlags(shouldHide bool) []cli.Flag {
|
|
return []cli.Flag{
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: sshPortFlag,
|
|
Usage: "Localhost port that cloudflared SSH server will run on",
|
|
Value: "2222",
|
|
EnvVars: []string{"LOCAL_SSH_PORT"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: sshIdleTimeoutFlag,
|
|
Usage: "Connection timeout after no activity",
|
|
EnvVars: []string{"SSH_IDLE_TIMEOUT"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewDurationFlag(&cli.DurationFlag{
|
|
Name: sshMaxTimeoutFlag,
|
|
Usage: "Absolute connection timeout",
|
|
EnvVars: []string{"SSH_MAX_TIMEOUT"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: bucketNameFlag,
|
|
Usage: "Bucket name of where to upload SSH logs",
|
|
EnvVars: []string{"BUCKET_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: regionNameFlag,
|
|
Usage: "Region name of where to upload SSH logs",
|
|
EnvVars: []string{"REGION_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: secretIDFlag,
|
|
Usage: "Secret ID of where to upload SSH logs",
|
|
EnvVars: []string{"SECRET_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: accessKeyIDFlag,
|
|
Usage: "Access Key ID of where to upload SSH logs",
|
|
EnvVars: []string{"ACCESS_CLIENT_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: sessionTokenIDFlag,
|
|
Usage: "Session Token to use in the configuration of SSH logs uploading",
|
|
EnvVars: []string{"SESSION_TOKEN_ID"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: s3URLFlag,
|
|
Usage: "S3 url of where to upload SSH logs",
|
|
EnvVars: []string{"S3_URL"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewPathFlag(&cli.PathFlag{
|
|
Name: hostKeyPath,
|
|
Usage: "Absolute path of directory to save SSH host keys in",
|
|
EnvVars: []string{"HOST_KEY_PATH"},
|
|
Hidden: true,
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: ingress.SSHServerFlag,
|
|
Value: false,
|
|
Usage: "Run an SSH Server",
|
|
EnvVars: []string{"TUNNEL_SSH_SERVER"},
|
|
Hidden: true, // TODO: remove when feature is complete
|
|
}),
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: config.BastionFlag,
|
|
Value: false,
|
|
Usage: "Runs as jump host",
|
|
EnvVars: []string{"TUNNEL_BASTION"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: ingress.ProxyAddressFlag,
|
|
Usage: "Listen address for the proxy.",
|
|
Value: "127.0.0.1",
|
|
EnvVars: []string{"TUNNEL_PROXY_ADDRESS"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewIntFlag(&cli.IntFlag{
|
|
Name: ingress.ProxyPortFlag,
|
|
Usage: "Listen port for the proxy.",
|
|
Value: 0,
|
|
EnvVars: []string{"TUNNEL_PROXY_PORT"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
}
|
|
}
|
|
|
|
func configureLoggingFlags(shouldHide bool) []cli.Flag {
|
|
return []cli.Flag{
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "loglevel",
|
|
Value: "info",
|
|
Usage: "Application logging level {fatal, error, info, debug}. " + debugLevelWarning,
|
|
EnvVars: []string{"TUNNEL_LOGLEVEL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "transport-loglevel",
|
|
Aliases: []string{"proto-loglevel"}, // This flag used to be called proto-loglevel
|
|
Value: "info",
|
|
Usage: "Transport logging level(previously called protocol logging level) {fatal, error, info, debug}",
|
|
EnvVars: []string{"TUNNEL_PROTO_LOGLEVEL", "TUNNEL_TRANSPORT_LOGLEVEL"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "logfile",
|
|
Usage: "Save application log to this file for reporting issues.",
|
|
EnvVars: []string{"TUNNEL_LOGFILE"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: logDirectoryFlag,
|
|
Usage: "Save application log to this directory for reporting issues.",
|
|
EnvVars: []string{"TUNNEL_LOGDIRECTORY"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "trace-output",
|
|
Usage: "Name of trace output file, generated when cloudflared stops.",
|
|
EnvVars: []string{"TUNNEL_TRACE_OUTPUT"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
}
|
|
}
|
|
|
|
func configureProxyDNSFlags(shouldHide bool) []cli.Flag {
|
|
return []cli.Flag{
|
|
altsrc.NewBoolFlag(&cli.BoolFlag{
|
|
Name: "proxy-dns",
|
|
Usage: "Run a DNS over HTTPS proxy server.",
|
|
EnvVars: []string{"TUNNEL_DNS"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewIntFlag(&cli.IntFlag{
|
|
Name: "proxy-dns-port",
|
|
Value: 53,
|
|
Usage: "Listen on given port for the DNS over HTTPS proxy server.",
|
|
EnvVars: []string{"TUNNEL_DNS_PORT"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringFlag(&cli.StringFlag{
|
|
Name: "proxy-dns-address",
|
|
Usage: "Listen address for the DNS over HTTPS proxy server.",
|
|
Value: "localhost",
|
|
EnvVars: []string{"TUNNEL_DNS_ADDRESS"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
|
|
Name: "proxy-dns-upstream",
|
|
Usage: "Upstream endpoint URL, you can specify multiple endpoints for redundancy.",
|
|
Value: cli.NewStringSlice("https://1.1.1.1/dns-query", "https://1.0.0.1/dns-query"),
|
|
EnvVars: []string{"TUNNEL_DNS_UPSTREAM"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
|
|
Name: "proxy-dns-bootstrap",
|
|
Usage: "bootstrap endpoint URL, you can specify multiple endpoints for redundancy.",
|
|
Value: cli.NewStringSlice("https://162.159.36.1/dns-query", "https://162.159.46.1/dns-query", "https://[2606:4700:4700::1111]/dns-query", "https://[2606:4700:4700::1001]/dns-query"),
|
|
EnvVars: []string{"TUNNEL_DNS_BOOTSTRAP"},
|
|
Hidden: shouldHide,
|
|
}),
|
|
}
|
|
}
|
|
|
|
func stdinControl(reconnectCh chan origin.ReconnectSignal, logger logger.Service) {
|
|
for {
|
|
scanner := bufio.NewScanner(os.Stdin)
|
|
for scanner.Scan() {
|
|
command := scanner.Text()
|
|
parts := strings.SplitN(command, " ", 2)
|
|
|
|
switch parts[0] {
|
|
case "":
|
|
break
|
|
case "reconnect":
|
|
var reconnect origin.ReconnectSignal
|
|
if len(parts) > 1 {
|
|
var err error
|
|
if reconnect.Delay, err = time.ParseDuration(parts[1]); err != nil {
|
|
logger.Error(err.Error())
|
|
continue
|
|
}
|
|
}
|
|
logger.Infof("Sending reconnect signal %+v", reconnect)
|
|
reconnectCh <- reconnect
|
|
default:
|
|
logger.Infof("Unknown command: %s", command)
|
|
fallthrough
|
|
case "help":
|
|
logger.Info(`Supported command:
|
|
reconnect [delay]
|
|
- restarts one randomly chosen connection with optional delay before reconnect`)
|
|
}
|
|
}
|
|
}
|
|
}
|