Add pure Go Windows GUI

src/win/build.bat

@@ -0,0 +1,14 @@
+REM  getting the output of an executed command in a batch file is not trivial, we use a temp file for it
+git describe --tags --abbrev=0 > temp.txt
+set /P VERSION=< temp.txt
+echo %VERSION%
+del temp.txt
+
+REM  build a 32 bit Windows application, this way it will run on both 32 but and 64 bit Windows machines
+set GOARCH=386
+
+REM  -s and -w strip the program of debugging information, making it smaller
+REM  -H=windowsgui makes the program not have a console window on start-up
+go build -ldflags="-s -w -H=windowsgui -X main.Version=%VERSION%" -o croc.exe
+
+if errorlevel 1 pause

src/win/main_windows.go

@@ -0,0 +1,250 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"time"
+
+	humanize "github.com/dustin/go-humanize"
+	"github.com/gonutz/w32"
+	"github.com/gonutz/wui"
+	"github.com/schollz/croc/src/cli"
+	"github.com/schollz/croc/src/croc"
+	"github.com/schollz/croc/src/utils"
+	"github.com/skratchdot/open-golang/open"
+)
+
+var Version string
+
+func main() {
+	if len(os.Args) > 1 {
+		cli.Run()
+		return
+	}
+
+	var isWorking bool
+
+	font, _ := wui.NewFont(wui.FontDesc{
+		Name:   "Tahoma",
+		Height: -11,
+	})
+
+	window := wui.NewWindow()
+	window.SetFont(font)
+	window.SetIconFromMem(icon)
+	window.SetStyle(w32.WS_OVERLAPPED | w32.WS_CAPTION | w32.WS_SYSMENU | w32.WS_MINIMIZEBOX)
+	if runtime.GOOS == "windows" {
+		window.SetClientSize(300, 150)
+		window.SetTitle("croc " + Version)
+	} else {
+		window.SetClientSize(400, 150)
+		window.SetTitle("🐊📦 croc " + Version)
+	}
+
+	labels := make([]*wui.Label, 3)
+	for i := range labels {
+		label := wui.NewLabel()
+		label.SetCenterAlign()
+		label.SetBounds(0, 10+i*20, window.ClientWidth(), 20)
+		window.Add(label)
+		labels[i] = label
+	}
+	labels[0].SetText("secure data transfer")
+	labels[1].SetText("Click 'Send' or 'Receive' to start")
+
+	button := wui.NewButton()
+	button.SetText("Send")
+	window.Add(button)
+	button.SetBounds(10, window.ClientHeight()-70, window.ClientWidth()-20, 25)
+	button.SetOnClick(func() {
+		if isWorking {
+			wui.MessageBoxError(window, "Error", "Can only do one send or receive at a time")
+			return
+		}
+		isWorking = true
+
+		fileDialog := wui.NewFileOpenDialog()
+		fileDialog.SetTitle("Open file to send...")
+		accepted, fn := fileDialog.ExecuteSingleSelection(window)
+		if !accepted {
+			isWorking = false
+			return
+		}
+		if fn == "" {
+			wui.MessageBoxError(window, "Error", "No file selected")
+			isWorking = false
+			return
+		}
+
+		go func() {
+			cr := croc.Init(false)
+			done := make(chan bool)
+			codePhrase := utils.GetRandomName()
+			_, fname := filepath.Split(fn)
+			labels[0].SetText(fmt.Sprintf("Sending '%s'", fname))
+			labels[1].SetText(fmt.Sprintf("Code phrase: %s", codePhrase))
+
+			go func(done chan bool) {
+				for {
+					if cr.OtherIP != "" && cr.FileInfo.SentName != "" {
+						bytesString := humanize.Bytes(uint64(cr.FileInfo.Size))
+						fileOrFolder := "file"
+						if cr.FileInfo.IsDir {
+							fileOrFolder = "folder"
+						}
+						labels[0].SetText(fmt.Sprintf("Sending %s %s '%s' to %s", bytesString, fileOrFolder, cr.FileInfo.SentName, cr.OtherIP))
+					}
+					if cr.Bar != nil {
+						barState := cr.Bar.State()
+						labels[1].SetText(fmt.Sprintf("%2.1f%% [%2.0fs:%2.0fs]", barState.CurrentPercent*100, barState.SecondsSince, barState.SecondsLeft))
+					}
+					labels[2].SetText(cr.StateString)
+					time.Sleep(100 * time.Millisecond)
+					select {
+					case _ = <-done:
+						labels[2].SetText(cr.StateString)
+						return
+					default:
+						continue
+					}
+				}
+			}(done)
+
+			cr.Send(fn, codePhrase)
+			done <- true
+			isWorking = false
+		}()
+	})
+
+	receiveButton := wui.NewButton()
+	receiveButton.SetText("Receive")
+	window.Add(receiveButton)
+	receiveButton.SetBounds(10, window.ClientHeight()-35, window.ClientWidth()-20, 25)
+	receiveButton.SetOnClick(func() {
+		if isWorking {
+			wui.MessageBoxError(window, "Error", "Can only do one send or receive at a time")
+			return
+		}
+		labels[1].SetText("")
+		labels[2].SetText("please wait...")
+		isWorking = true
+		defer func() {
+			isWorking = false
+		}()
+
+		// determine the folder to save the file
+		folderDialog := wui.NewFolderSelectDialog()
+		folderDialog.SetTitle("Open folder to receive file...")
+		accepted, fn := folderDialog.Execute(window)
+		if !accepted {
+			return
+		}
+		if len(fn) == 0 {
+			labels[2].SetText(fmt.Sprintf("No folder selected"))
+			return
+		}
+
+		passDlg := wui.NewDialogWindow()
+		passDlg.SetTitle("Enter code phrase")
+		passDlg.SetClientSize(window.ClientWidth()-20, 40)
+		pass := wui.NewEditLine()
+		passDlg.Add(pass)
+		pass.SetPassword(true)
+		pass.SetBounds(10, 10, passDlg.ClientWidth()-20, 20)
+		var passAccepted bool
+		passDlg.SetShortcut(wui.ShortcutKeys{Key: w32.VK_RETURN}, func() {
+			passAccepted = true
+			passDlg.Close()
+		})
+		passDlg.SetShortcut(wui.ShortcutKeys{Key: w32.VK_ESCAPE}, func() {
+			passDlg.Close()
+		})
+		var codePhrase string
+		passDlg.SetOnShow(func() {
+			passDlg.SetX(window.X() + (window.Width()-passDlg.Width())/2)
+			passDlg.SetY(window.Y() + (window.Height()-passDlg.Height())/2)
+			pass.Focus()
+		})
+		passDlg.SetOnClose(func() {
+			if passAccepted {
+				codePhrase = pass.Text()
+			}
+		})
+		passDlg.ShowModal(window)
+		passDlg.Destroy()
+		if len(codePhrase) < 3 {
+			labels[2].SetText(fmt.Sprintf("Invalid codephrase: '%s'", codePhrase))
+			return
+		}
+
+		cr := croc.Init(false)
+		cr.WindowRecipientPrompt = true
+
+		done := make(chan bool)
+		go func() {
+			// change into the receiving directory
+			cwd, _ := os.Getwd()
+			defer os.Chdir(cwd)
+			os.Chdir(fn)
+			err := cr.Receive(codePhrase)
+			if err == nil {
+				open.Run(fn)
+			}
+			done <- true
+			done <- true
+			isWorking = false
+		}()
+		go func() {
+			for {
+				if cr.Bar != nil {
+					barState := cr.Bar.State()
+					labels[1].SetText(fmt.Sprintf("%2.1f%% [%2.0fs:%2.0fs]", barState.CurrentPercent*100, barState.SecondsSince, barState.SecondsLeft))
+				}
+				if cr.StateString != "" {
+					labels[2].SetText(cr.StateString)
+				}
+				time.Sleep(100 * time.Millisecond)
+				select {
+				case _ = <-done:
+					labels[2].SetText(cr.StateString)
+					return
+				default:
+					continue
+				}
+			}
+		}()
+
+		for {
+			if cr.WindowReceivingString != "" {
+				question := wui.MessageBoxYesNo(
+					window,
+					"croc",
+					fmt.Sprintf("%s?", cr.WindowReceivingString),
+				)
+				if question {
+					cr.WindowRecipientAccept = true
+					labels[0].SetText(cr.WindowReceivingString)
+				} else {
+					cr.WindowRecipientAccept = false
+					labels[2].SetText("canceled")
+				}
+				cr.WindowRecipientPrompt = false
+				cr.WindowReceivingString = ""
+				break
+			}
+			time.Sleep(100 * time.Millisecond)
+			select {
+			case _ = <-done:
+				labels[2].SetText(cr.StateString)
+				return
+			default:
+				continue
+			}
+		}
+
+	})
+
+	window.Show()
+}