working prototype

AndroidManifest.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest
+	xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+	package="com.github.howeyc.crocgui"
+	android:versionCode="1"
+	android:versionName="1.0.0">
+
+    <application android:label="Croc"
+        tools:targetApi="30"
+    >
+	<activity android:name="org.golang.app.GoNativeActivity"
+		android:label="Croc"
+		android:configChanges="orientation|keyboardHidden">
+		<meta-data android:name="android.app.lib_name" android:value="croc" />
+		<intent-filter>
+			<action android:name="android.intent.action.MAIN" />
+			<category android:name="android.intent.category.LAUNCHER" />
+		</intent-filter>
+	</activity>
+	</application>
+
+	<uses-permission android:name="android.permission.INTERNET" />
+	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+</manifest>

LICENSE

@@ -0,0 +1,13 @@
+Copyright (c) 2021 Chris Howey <chris@howey.me>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above 
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 

Makefile

@@ -0,0 +1,13 @@
+.PHONY: clean all
+
+all: crocgui.apk crocgui
+
+crocgui.apk: main.go platforms_android.go AndroidManifest.xml
+	fyne package -os android -appID com.github.howeyc.crocgui -icon logo.png
+
+crocgui: main.go platforms-all.go
+	go build
+
+clean:
+	go clean
+	rm crocgui.apk

README.md

@@ -0,0 +1,4 @@
+# Croc GUI
+
+A nice simple GUI for [croc](https://github.com/schollz/croc), designed for
+mobile use.

go.mod

@@ -8,4 +8,3 @@ require (
 	github.com/schollz/croc/v8 v8.6.7
 )
 
-replace github.com/fyne-io/mobile v0.1.2 => ../mobile

go.sum

@@ -95,6 +95,7 @@ golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMx
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/image v0.0.0-20200430140353-33d19683fad8 h1:6WW6V3x1P/jokJBpRQYUJnMHRP6isStQwCozxnU7XQw=
 golang.org/x/image v0.0.0-20200430140353-33d19683fad8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6 h1:Tus/Y4w3V77xDsGwKUC8a/QrV7jScpU557J77lFffNs=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20210208171126-f462b3930c8f h1:aEcjdTsycgPqO/caTgnxfR9xwWOltP/21vtJyFztEy0=
 golang.org/x/mobile v0.0.0-20210208171126-f462b3930c8f/go.mod h1:skQtrUTUwhdJvXM/2KKJzY8pDgNr9I/FOMqDVRPBUS4=

main.go

@@ -19,6 +19,11 @@ import (
 
 func sendTabItem(w fyne.Window) *container.TabItem {
 	status := widget.NewLabel("")
+	defer func() {
+		if r := recover(); r != nil {
+			status.SetText(fmt.Sprint(r))
+		}
+	}()
 	prog := widget.NewProgressBar()
 	prog.Hide()
 	topline := widget.NewLabel("Pick a file to send")
@@ -35,7 +40,7 @@ func sendTabItem(w fyne.Window) *container.TabItem {
 						IsSender:      true,
 						SharedSecret:  randomName,
 						Debug:         false,
-						RelayAddress:  "10.0.1.1:9009",
+						RelayAddress:  "croc.schollz.com:9009",
 						RelayPorts:    []string{"9009", "9010", "9011", "9012", "9013"},
 						RelayPassword: "pass123",
 						Stdout:        false,
@@ -47,8 +52,14 @@ func sendTabItem(w fyne.Window) *container.TabItem {
 						log.Println(err)
 					} else if f != nil {
 						status.SetText("Receive Code: " + randomName)
-						fi, _ := os.Stat(f.URI().Path())
-						filename = filepath.Base(fi.Name())
+						fpath := fixpath(f.URI().Path())
+
+						fi, sterr := os.Stat(fpath)
+						if sterr != nil {
+							status.SetText(fmt.Sprintf("Stat error: %s - %s", fpath, sterr.Error()))
+							return
+						}
+						filename = filepath.Base(fpath)
 						topline.SetText(fmt.Sprintf("Sending file: %s", filename))
 						totalsize := fi.Size()
 						prog.Max = float64(totalsize)
@@ -66,18 +77,20 @@ func sendTabItem(w fyne.Window) *container.TabItem {
 								}
 							}
 						}()
-						serr := sender.Send(croc.TransferOptions{
-							PathToFiles: []string{f.URI().Path()},
-						})
-						donechan <- true
-						prog.Hide()
-						prog.SetValue(0)
-						topline.SetText("Pick a file to send")
-						if serr != nil {
-							log.Println("Send failed:", serr)
-						} else {
-							status.SetText(fmt.Sprintf("Sent file %s", filename))
-						}
+						go func() {
+							serr := sender.Send(croc.TransferOptions{
+								PathToFiles: []string{fpath},
+							})
+							donechan <- true
+							prog.Hide()
+							prog.SetValue(0)
+							topline.SetText("Pick a file to send")
+							if serr != nil {
+								log.Println("Send failed:", serr)
+							} else {
+								status.SetText(fmt.Sprintf("Sent file %s", filename))
+							}
+						}()
 					}
 				}, w)
 			}),
@@ -88,6 +101,12 @@ func sendTabItem(w fyne.Window) *container.TabItem {
 
 func recvTabItem() *container.TabItem {
 	status := widget.NewLabel("")
+	defer func() {
+		if r := recover(); r != nil {
+			status.SetText(fmt.Sprint(r))
+		}
+	}()
+
 	prog := widget.NewProgressBar()
 	prog.Hide()
 	recvEntry := widget.NewEntry()
@@ -101,7 +120,7 @@ func recvTabItem() *container.TabItem {
 					IsSender:      false,
 					SharedSecret:  recvEntry.Text,
 					Debug:         false,
-					RelayAddress:  "10.0.1.1:9009",
+					RelayAddress:  "croc.schollz.com:9009",
 					RelayPassword: "pass123",
 					Stdout:        false,
 					NoPrompt:      true,
@@ -133,6 +152,10 @@ func recvTabItem() *container.TabItem {
 						}
 					}
 				}()
+				cderr := os.Chdir(DEFAULT_DOWNLOAD_DIR)
+				if cderr != nil {
+					log.Println("Unable to change to download dir")
+				}
 				rerr := receiver.Receive()
 				donechan <- true
 				prog.Hide()
@@ -155,5 +178,6 @@ func main() {
 	w := a.NewWindow("croc")
 
 	w.SetContent(container.NewAppTabs(sendTabItem(w), recvTabItem()))
+	w.Resize(fyne.NewSize(800, 600))
 	w.ShowAndRun()
 }

platforms-all.go

@@ -0,0 +1,9 @@
+// +build !android
+
+package main
+
+const DEFAULT_DOWNLOAD_DIR = "."
+
+func fixpath(fpath string) string {
+	return fpath
+}

platforms_android.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"net/url"
+	"strings"
+)
+
+const DEFAULT_DOWNLOAD_DIR = "/storage/emulated/0/Download"
+
+func fixpath(fpath string) string {
+	if strings.Contains(fpath, "%3A") {
+		fpath, _ = url.PathUnescape(fpath)
+		colIdx := strings.Index(fpath, ":")
+		fpath = "/storage/emulated/0/" + fpath[colIdx+1:]
+	}
+
+	return fpath
+}