2018-10-16 21:23:01 +02:00
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package cli
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import (
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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2018-10-23 05:34:04 +02:00
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"runtime"
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2018-10-16 21:23:01 +02:00
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"strings"
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"time"
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humanize "github.com/dustin/go-humanize"
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2018-11-02 14:15:37 +01:00
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"github.com/pkg/errors"
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2018-10-16 21:23:01 +02:00
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"github.com/schollz/croc/src/croc"
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"github.com/schollz/croc/src/utils"
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2018-10-19 19:18:49 +02:00
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"github.com/skratchdot/open-golang/open"
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2018-10-16 21:23:01 +02:00
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"github.com/urfave/cli"
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)
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var Version string
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var cr *croc.Croc
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func Run() {
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2018-10-23 05:34:04 +02:00
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runtime.GOMAXPROCS(runtime.NumCPU())
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2018-10-16 21:23:01 +02:00
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app := cli.NewApp()
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app.Name = "croc"
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if Version == "" {
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Version = "dev"
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}
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app.Version = Version
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app.Compiled = time.Now()
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app.Usage = "easily and securely transfer stuff from one computer to another"
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app.UsageText = "croc allows any two computers to directly and securely transfer files"
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// app.ArgsUsage = "[args and such]"
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app.Commands = []cli.Command{
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{
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Name: "send",
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Usage: "send a file",
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Description: "send a file over the relay",
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ArgsUsage: "[filename]",
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Flags: []cli.Flag{
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cli.BoolFlag{Name: "no-compress, o", Usage: "disable compression"},
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cli.BoolFlag{Name: "no-encrypt, e", Usage: "disable encryption"},
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cli.StringFlag{Name: "code, c", Usage: "codephrase used to connect to relay"},
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},
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HelpName: "croc send",
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Action: func(c *cli.Context) error {
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return send(c)
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},
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},
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{
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Name: "relay",
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Usage: "start a croc relay",
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Description: "the croc relay will handle websocket and TCP connections",
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Flags: []cli.Flag{},
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HelpName: "croc relay",
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Action: func(c *cli.Context) error {
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return relay(c)
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},
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},
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2018-10-21 17:21:58 +02:00
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{
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Name: "config",
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Usage: "generates a config file",
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Description: "the croc config can be used to set static parameters",
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Flags: []cli.Flag{},
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HelpName: "croc config",
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Action: func(c *cli.Context) error {
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return saveDefaultConfig(c)
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},
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},
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2018-10-16 21:23:01 +02:00
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}
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app.Flags = []cli.Flag{
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2018-10-17 15:39:02 +02:00
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cli.StringFlag{Name: "addr", Value: "croc4.schollz.com", Usage: "address of the public relay"},
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2018-10-16 21:23:01 +02:00
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cli.StringFlag{Name: "addr-ws", Value: "8153", Usage: "port of the public relay websocket server to connect"},
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cli.StringFlag{Name: "addr-tcp", Value: "8154,8155,8156,8157,8158,8159,8160,8161", Usage: "tcp ports of the public relay server to connect"},
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cli.BoolFlag{Name: "no-local", Usage: "disable local mode"},
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cli.BoolFlag{Name: "local", Usage: "use only local mode"},
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cli.BoolFlag{Name: "debug", Usage: "increase verbosity (a lot)"},
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cli.BoolFlag{Name: "yes", Usage: "automatically agree to all prompts"},
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cli.BoolFlag{Name: "stdout", Usage: "redirect file to stdout"},
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cli.BoolFlag{Name: "force-tcp", Usage: "force TCP"},
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cli.BoolFlag{Name: "force-web", Usage: "force websockets"},
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cli.StringFlag{Name: "port", Value: "8153", Usage: "port that the websocket listens on"},
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cli.StringFlag{Name: "tcp-port", Value: "8154,8155,8156,8157,8158,8159,8160,8161", Usage: "ports that the tcp server listens on"},
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2018-10-21 16:33:29 +02:00
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cli.StringFlag{Name: "curve", Value: "siec", Usage: "specify elliptic curve to use for PAKE (p256, p384, p521, siec)"},
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2018-10-22 15:36:36 +02:00
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cli.StringFlag{Name: "out", Value: ".", Usage: "specify an output folder to receive the file"},
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2018-10-16 21:23:01 +02:00
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}
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app.EnableBashCompletion = true
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app.HideHelp = false
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app.HideVersion = false
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app.BashComplete = func(c *cli.Context) {
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fmt.Fprintf(c.App.Writer, "send\nreceive\relay")
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}
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app.Action = func(c *cli.Context) error {
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2018-11-01 15:08:57 +01:00
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// if trying to send but forgot send, let the user know
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if c.Args().First() != "" && utils.Exists(c.Args().First()) {
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_, fname := filepath.Split(c.Args().First())
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2018-11-01 15:26:18 +01:00
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yn := utils.GetInput(fmt.Sprintf("Did you mean to send '%s'? (y/n) ", fname))
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2018-11-01 15:08:57 +01:00
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if strings.ToLower(yn) == "y" {
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return send(c)
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}
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}
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2018-10-16 21:23:01 +02:00
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return receive(c)
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}
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app.Before = func(c *cli.Context) error {
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cr = croc.Init(c.GlobalBool("debug"))
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2018-10-21 16:20:23 +02:00
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cr.Version = Version
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2018-10-16 21:23:01 +02:00
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cr.AllowLocalDiscovery = true
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cr.Address = c.GlobalString("addr")
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cr.AddressTCPPorts = strings.Split(c.GlobalString("addr-tcp"), ",")
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cr.AddressWebsocketPort = c.GlobalString("addr-ws")
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cr.NoRecipientPrompt = c.GlobalBool("yes")
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cr.Stdout = c.GlobalBool("stdout")
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cr.LocalOnly = c.GlobalBool("local")
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cr.NoLocal = c.GlobalBool("no-local")
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cr.ShowText = true
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cr.RelayWebsocketPort = c.String("port")
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cr.RelayTCPPorts = strings.Split(c.String("tcp-port"), ",")
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cr.CurveType = c.String("curve")
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if c.GlobalBool("force-tcp") {
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cr.ForceSend = 2
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}
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if c.GlobalBool("force-web") {
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cr.ForceSend = 1
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}
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return nil
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}
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err := app.Run(os.Args)
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if err != nil {
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2018-11-02 14:15:37 +01:00
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fmt.Fprintf(os.Stderr, "\r\n%s", err.Error())
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2018-10-16 21:23:01 +02:00
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}
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2018-11-01 17:08:18 +01:00
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fmt.Fprintf(os.Stderr, "\r\n")
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2018-10-16 21:23:01 +02:00
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}
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2018-10-21 17:21:58 +02:00
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func saveDefaultConfig(c *cli.Context) error {
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return croc.SaveDefaultConfig()
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}
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2018-10-16 21:23:01 +02:00
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func send(c *cli.Context) error {
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stat, _ := os.Stdin.Stat()
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var fname string
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if (stat.Mode() & os.ModeCharDevice) == 0 {
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f, err := ioutil.TempFile(".", "croc-stdin-")
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if err != nil {
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return err
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}
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_, err = io.Copy(f, os.Stdin)
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if err != nil {
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return err
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}
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err = f.Close()
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if err != nil {
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return err
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}
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fname = f.Name()
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defer func() {
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err = os.Remove(fname)
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if err != nil {
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log.Println(err)
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}
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}()
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} else {
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fname = c.Args().First()
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}
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if fname == "" {
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return errors.New("must specify file: croc send [filename]")
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}
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cr.UseCompression = !c.Bool("no-compress")
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cr.UseEncryption = !c.Bool("no-encrypt")
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if c.String("code") != "" {
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2018-10-21 17:21:58 +02:00
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cr.Codephrase = c.String("code")
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2018-10-16 21:23:01 +02:00
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}
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2018-10-21 17:21:58 +02:00
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cr.LoadConfig()
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if len(cr.Codephrase) == 0 {
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2018-10-16 21:23:01 +02:00
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// generate code phrase
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2018-10-21 17:21:58 +02:00
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cr.Codephrase = utils.GetRandomName()
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2018-10-16 21:23:01 +02:00
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}
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// print the text
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finfo, err := os.Stat(fname)
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if err != nil {
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return err
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}
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fname, _ = filepath.Abs(fname)
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fname = filepath.Clean(fname)
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_, filename := filepath.Split(fname)
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fileOrFolder := "file"
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fsize := finfo.Size()
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if finfo.IsDir() {
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fileOrFolder = "folder"
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fsize, err = dirSize(fname)
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if err != nil {
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return err
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}
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}
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fmt.Fprintf(os.Stderr,
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"Sending %s %s named '%s'\nCode is: %s\nOn the other computer, please run:\n\ncroc %s\n\n",
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humanize.Bytes(uint64(fsize)),
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fileOrFolder,
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filename,
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2018-10-21 17:21:58 +02:00
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cr.Codephrase,
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cr.Codephrase,
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2018-10-16 21:23:01 +02:00
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)
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2018-11-01 15:26:18 +01:00
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if cr.Debug {
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croc.SetDebugLevel("debug")
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}
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2018-10-21 17:21:58 +02:00
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return cr.Send(fname, cr.Codephrase)
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2018-10-16 21:23:01 +02:00
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}
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func receive(c *cli.Context) error {
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if c.GlobalString("code") != "" {
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2018-10-21 17:25:53 +02:00
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cr.Codephrase = c.GlobalString("code")
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2018-10-16 21:23:01 +02:00
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}
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if c.Args().First() != "" {
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2018-10-21 17:25:53 +02:00
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cr.Codephrase = c.Args().First()
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2018-10-16 21:23:01 +02:00
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}
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2018-10-22 15:36:36 +02:00
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if c.GlobalString("out") != "" {
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os.Chdir(c.GlobalString("out"))
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}
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2018-10-21 17:25:53 +02:00
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cr.LoadConfig()
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2018-10-19 19:18:49 +02:00
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openFolder := false
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if len(os.Args) == 1 {
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// open folder since they didn't give any arguments
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openFolder = true
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}
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2018-10-21 17:25:53 +02:00
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if cr.Codephrase == "" {
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cr.Codephrase = utils.GetInput("Enter receive code: ")
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2018-10-16 21:23:01 +02:00
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}
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2018-11-01 15:26:18 +01:00
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if cr.Debug {
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croc.SetDebugLevel("debug")
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}
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2018-10-21 17:25:53 +02:00
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err := cr.Receive(cr.Codephrase)
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2018-10-19 19:18:49 +02:00
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if err == nil && openFolder {
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cwd, _ := os.Getwd()
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open.Run(cwd)
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}
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return err
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2018-10-16 21:23:01 +02:00
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}
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func relay(c *cli.Context) error {
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return cr.Relay()
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}
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func dirSize(path string) (int64, error) {
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var size int64
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err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
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if !info.IsDir() {
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size += info.Size()
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}
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return err
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})
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return size, err
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}
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