146 lines
3.5 KiB
Go
146 lines
3.5 KiB
Go
package main
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import (
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"github.com/codegangsta/cli"
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"github.com/yudai/gotty/app"
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)
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func main() {
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cmd := cli.NewApp()
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cmd.Version = app.Version
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cmd.Name = "gotty"
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cmd.Usage = "Share your terminal as a web application"
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cmd.HideHelp = true
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flags := []flag{
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flag{"address", "a", "IP address to listen"},
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flag{"port", "p", "Port number to listen"},
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flag{"permit-write", "w", "Permit clients to write to the TTY (BE CAREFUL)"},
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flag{"credential", "c", "Credential for Basic Authentication (ex: user:pass, default disabled)"},
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flag{"random-url", "r", "Add a random string to the URL"},
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flag{"random-url-length", "", "Random URL length"},
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flag{"tls", "t", "Enable TLS/SSL"},
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flag{"tls-crt", "", "TLS/SSL certificate file path"},
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flag{"tls-key", "", "TLS/SSL key file path"},
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flag{"tls-ca-crt", "", "TLS/SSL CA certificate file for client certifications"},
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flag{"index", "", "Custom index.html file"},
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flag{"title-format", "", "Title format of browser window"},
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flag{"reconnect", "", "Enable reconnection"},
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flag{"reconnect-time", "", "Time to reconnect"},
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flag{"max-connection", "", "Maximum connection to gotty, 0(default) means no limit"},
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flag{"once", "", "Accept only one client and exit on disconnection"},
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flag{"permit-arguments", "", "Permit clients to send command line arguments in URL (e.g. http://example.com:8080/?arg=AAA&arg=BBB)"},
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flag{"close-signal", "", "Signal sent to the command process when gotty close it (default: SIGHUP)"},
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flag{"width", "", "Static width of the screen, 0(default) means dynamically resize"},
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flag{"height", "", "Static height of the screen, 0(default) means dynamically resize"},
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}
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mappingHint := map[string]string{
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"index": "IndexFile",
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"tls": "EnableTLS",
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"tls-crt": "TLSCrtFile",
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"tls-key": "TLSKeyFile",
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"tls-ca-crt": "TLSCACrtFile",
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"random-url": "EnableRandomUrl",
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"reconnect": "EnableReconnect",
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}
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cliFlags, err := generateFlags(flags, mappingHint)
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if err != nil {
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exit(err, 3)
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}
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cmd.Flags = append(
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cliFlags,
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cli.StringFlag{
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Name: "config",
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Value: "~/.gotty",
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Usage: "Config file path",
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EnvVar: "GOTTY_CONFIG",
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},
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)
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cmd.Action = func(c *cli.Context) {
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if len(c.Args()) == 0 {
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fmt.Println("Error: No command given.\n")
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cli.ShowAppHelp(c)
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exit(err, 1)
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}
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options := app.DefaultOptions
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configFile := c.String("config")
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_, err := os.Stat(app.ExpandHomeDir(configFile))
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if configFile != "~/.gotty" || !os.IsNotExist(err) {
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if err := app.ApplyConfigFile(&options, configFile); err != nil {
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exit(err, 2)
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}
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}
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applyFlags(&options, flags, mappingHint, c)
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if c.IsSet("credential") {
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options.EnableBasicAuth = true
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}
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if c.IsSet("tls-ca-crt") {
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options.EnableTLSClientAuth = true
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}
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if err := app.CheckConfig(&options); err != nil {
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exit(err, 6)
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}
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app, err := app.New(c.Args(), &options)
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if err != nil {
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exit(err, 3)
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}
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registerSignals(app)
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err = app.Run()
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if err != nil {
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exit(err, 4)
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}
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}
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cli.AppHelpTemplate = helpTemplate
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cmd.Run(os.Args)
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}
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func exit(err error, code int) {
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if err != nil {
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fmt.Println(err)
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}
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os.Exit(code)
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}
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func registerSignals(app *app.App) {
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sigChan := make(chan os.Signal, 1)
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signal.Notify(
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sigChan,
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syscall.SIGINT,
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syscall.SIGTERM,
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)
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go func() {
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for {
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s := <-sigChan
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switch s {
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case syscall.SIGINT, syscall.SIGTERM:
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if app.Exit() {
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fmt.Println("Send ^C to force exit.")
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} else {
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os.Exit(5)
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}
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}
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}
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}()
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}
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