but do quote "$@" in java call to allow filenames with spaces to work.

Also included is "ByteSourceUploadable" which wraps a Guava ByteSource as a jodd-http Uploadable, so that we can implement multipart-upload services as appropriate.

.fdroid.yml

@@ -0,0 +1,28 @@
+Categories:
+  - Internet
+License: GPL-3.0-or-later
+WebSite: https://forge.monarch-pass.net/malacoda/piecannon
+SourceCode: https://forge.monarch-pass.net/malacoda/piecannon
+IssueTracker: https://forge.monarch-pass.net/malacoda/piecannon/issues
+
+Name: PieCannon
+Summary: File sharing tool
+Description: Tool for sharing files through the web.
+
+RepoType: git
+Repo:  https://forge.monarch-pass.net/malacoda/piecannon
+
+Builds:
+  - versionName: "1.0"
+    versionCode: 1
+    commit: HEAD
+    build:
+        - mvn clean install -f ../lib/pom.xml
+        - mvn clean install -Dandroid.release=true
+    subdir: android
+    output: target/*.apk
+
+AutoUpdateMode: None
+UpdateCheckMode: RepoManifest
+CurrentVersion: "1.0"
+CurrentVersionCode: 1

LICENSE.txt

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {one line to give the program's name and a brief idea of what it does.}
+    Copyright (C) {year}  {name of author}
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    Slide for Reddit  Copyright (C) 2017  Haptic Apps
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

README.md

@@ -5,5 +5,39 @@ It doesn't come with a backend because you're expected to bring your own. A plai
 
 This project is separated into a library and a desktop application (targeting mainly GNU/Linux), with an Android application in the works.
 
-## How to use
+## How to build
+Run `mvn clean install` in this directory to build the `lib` and `desktop` modules.
+
+If the `ANDROID_HOME` environment variable exists, `android` will also be built.
+
+Under GNU Guix System, the `guix_activate_environment` script can be used to create an environment that contains necessary packages for building this app.
+
+### F-Droid
+If the `fdroid` command is available, the app can be built using `fdroid build`. The Guix environment script will add the `fdroidserver` package to the generated environment.
+
+## How to install
+### GNU/Linux
+`desktop` contains a wrapper script that will call the version of `piecannon-desktop-app` installed in your maven repository, and then open the uploaded file in your browser. You can copy or symlink this wrapper script anywhere. Typically you would put it in `~/bin` or `~/.local/bin`. Make sure that directory is in your `PATH`.
+
+### Windows
 TODO
+
+### Mac OS
+TODO
+
+## How to use
+Place a `servers.json` in the Pie Cannon data directory. For GNU/Linux this is `XDG_DATA_HOME` (by default this would be `~/.local/share/piecannon`) (create this directory if it does not exist. For Android this would be the app's "externalFilesDir" (probably something like `Android/data/net.monarchpass.piecannon/files` - the app will tell you when you launch it). See `servers.example.json` for an example of such a file. Whenever you initiate a file upload, Pie Cannon will select one of your defined servers at random and upload the file.
+
+#### Server Types
+The `type` field in the server configuration tells Pie Cannon what type of server to use. The default value is `webdav`.
+
+##### WebDAV (`webdav`)
+For WebDAV servers, `url` is where the file is uploaded to and served from. `username` and `password`, if given, are HTTP Basic authentication credentials.
+
+For setting this up with nginx, see [ngx_http_dav_module](https://nginx.org/en/docs/http/ngx_http_dav_module.html) documentation and also [HTTP Basic Authentication](https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-http-basic-authentication/) guide.
+
+##### FTP/SFTP (`ftp`/`sftp`)
+For FTP/SFTP servers, the `path` is relative to your home directory and should be where `url` points to. i.e. a file uploaded to `path` should be downloadable at `url`. In the future Pie Cannon should be able to get SSH credentials from your agent so you won't need to put a password in this file.
+
+##### GoFile.io (`gofile`)
+No configuration options are supported for this currently, however in the future there may be support for using a token. Note that it's not possible to get a direct download link for this service without visiting a page first, so Pie Cannon returns the URL for that page instead of a direct download link.

android/.factorypath

@@ -6,8 +6,9 @@
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/org/checkerframework/checker-compat-qual/2.5.5/checker-compat-qual-2.5.5.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="VARJAR" id="M2_REPO/com/jcraft/jsch/0.1.55/jsch-0.1.55.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/jcraft/jsch/0.1.55/jsch-0.1.55.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-util/6.0.0/jodd-util-6.0.0.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/android/android/4.1.1.4/android-4.1.1.4.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/org/apache/httpcomponents/httpclient/4.0.1/httpclient-4.0.1.jar" enabled="true" runInBatchMode="false"/>

android/pom.xml

@@ -34,11 +34,6 @@
             <artifactId>jodd-util</artifactId>
             <version>6.0.0</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>2.8.6</version>
-        </dependency>
         <dependency>
             <groupId>com.google.android</groupId>
             <artifactId>android</artifactId>

android/src/main/AndroidManifest.xml

@@ -23,8 +23,7 @@
             <intent-filter>
                 <action android:name="android.intent.action.SEND"/>
 
-                <data android:mimeType="image/*"/>
+                <data android:mimeType="*/*"/>
-                <data android:mimeType="text/plain"/>
 
                 <category android:name="android.intent.category.DEFAULT"/>
             </intent-filter>

android/src/main/java/net/monarchpass/piecannon/Main.java

@@ -1,12 +1,22 @@
 package net.monarchpass.piecannon;
 
+import java.io.File;
+
 import android.app.Activity;
 import android.os.Bundle;
+import android.widget.TextView;
 
 public class Main extends Activity {
     @Override
     public void onCreate (final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        
+        final File serversJson = new File(getExternalFilesDir(null), "servers.json");
+        final TextView text = (TextView)findViewById(R.id.welcome);
+        text.append("\n---\n");
+        text.append(serversJson.exists() ? "servers.json file found at: " : "Please place a servers.json file at: ");
+        text.append("\n");
+        text.append(serversJson.getPath());
     }
 }

android/src/main/java/net/monarchpass/piecannon/Send.java

@@ -10,6 +10,7 @@ import android.content.ContentResolver;
 import com.google.common.io.ByteSource;
 
 import java.net.URI;
+import java.io.File;
 import java.io.InputStream;
 import java.io.IOException;
 import java.io.StringWriter;
@@ -42,25 +43,34 @@ public class Send extends Activity {
     public void uploadImage (final Uri imageUri) {
         // handle image
         final TextView text = (TextView)findViewById(R.id.text);
-        text.setText(imageUri.toString());
+        text.append("\n---\nReceived file url: \n");
+        text.append(imageUri.toString());
         
         final ContentResolver resolver = getContentResolver();
-        final Server testServer = new TestServer();
+        final PieCannon cannon = new PieCannon();
+        
+        try
+        {
+            cannon.loadServersFrom(new File(getExternalFilesDir(null), "servers.json"));
+        }
+        catch (final Exception exception)
+        {
+            logException(exception);
+            return;
+        }
         
         executor.submit(() -> {
             try
             {
-                final URI uploaded = testServer.upload(createFileNameForUri(imageUri, resolver), new ContentByteSource(resolver, imageUri));
+                final URI uploaded = cannon.selectServer().upload(createFileNameForUri(imageUri, resolver), new ContentByteSource(resolver, imageUri));
                 runOnUiThread(() -> {
-                    text.setText(uploaded.toString());
+                    text.append("\n---\nUploaded file to url: \n");
+                    text.append(uploaded.toString());
                     shareUploadUrl(uploaded);                
                 });
             }
             catch (final Exception exception) {
-                final StringWriter buf = new StringWriter();
+                logException(exception);
-                final PrintWriter out = new PrintWriter(buf);
-                exception.printStackTrace(out);
-                runOnUiThread(() -> text.setText(buf.toString()));
             }
         });
     }
@@ -87,6 +97,17 @@ public class Send extends Activity {
         throw new RuntimeException("Could not construct a file name");
     }
     
+    private void logException (final Exception exception) {
+        final StringWriter buf = new StringWriter();
+        final PrintWriter out = new PrintWriter(buf);
+        exception.printStackTrace(out);
+        runOnUiThread(() -> {
+            final TextView text = (TextView)findViewById(R.id.text);
+            text.append("\n---\n");
+            text.append(buf.toString());
+        });
+    }
+    
     @AllArgsConstructor
     public static class ContentByteSource extends ByteSource {
         private final ContentResolver resolver;

android/src/main/java/net/monarchpass/piecannon/TestServer.java

@@ -1,18 +0,0 @@
-package net.monarchpass.piecannon;
-
-import net.monarchpass.piecannon.impl.SftpServer;
-import java.net.URI;
-
-public class TestServer extends SftpServer {
-    public TestServer () {
-        super(
-            "Test Server",
-            "",
-            22,
-            "",
-            "",
-            "",
-            URI.create("")
-        );
-    }
-}

android/src/main/res/layout/activity_main.xml

@@ -5,4 +5,9 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context="net.monarchpass.piecannon.Main">
+    
+    <TextView android:id="@+id/welcome"
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:text="Welcome to Pie Cannon! There is no GUI for editing servers yet." />    
 </ScrollView>

android/src/main/res/layout/activity_send.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:tools="http://schemas.android.com/tools"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical"
+              tools:context="net.monarchpass.piecannon.Send">
+
+    <TextView android:id="@+id/text"
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:text="Pie Cannon at work!" />
+
+</ScrollView>

desktop/.factorypath

@@ -1,6 +1,9 @@
 <factorypath>
     <factorypathentry kind="VARJAR" id="M2_REPO/net/monarchpass/libpiecannon/0.0.1-SNAPSHOT/libpiecannon-0.0.1-SNAPSHOT.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/github/mwiede/jsch/0.1.60/jsch-0.1.60.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-http/6.0.3/jodd-http-6.0.3.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-util/6.0.0/jodd-util-6.0.0.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/guava/30.0-jre/guava-30.0-jre.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar" enabled="true" runInBatchMode="false"/>
@@ -9,6 +12,5 @@
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/net/kothar/xdg-java/0.1.1/xdg-java-0.1.1.jar" enabled="true" runInBatchMode="false"/>
-    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
     <factorypathentry kind="VARJAR" id="M2_REPO/org/projectlombok/lombok/1.18.16/lombok-1.18.16.jar" enabled="true" runInBatchMode="false"/>
 </factorypath>

desktop/Makefile

@@ -0,0 +1,12 @@
+PREFIX=~/.local
+DEST=$(PREFIX)/lib/piecannon
+COMMAND=$(PREFIX)/bin/piecannon
+
+target:
+	mvn install
+	
+install: target
+	mkdir -p $(DEST)
+	cp target/piecannon-*.jar $(DEST)/piecannon.jar
+	sed "s#@JAR_PATH@#$(DEST)/piecannon.jar#g" piecannon.in > $(COMMAND)
+	chmod +x $(COMMAND)

desktop/piecannon

@@ -1,12 +0,0 @@
-#!/bin/sh
-PC_GROUP="net.monarchpass"
-PC_ARTIFACT="piecannon-desktop-app"
-PC_VERSION="0.0.1-SNAPSHOT"
-PC_CLASS="net.monarchpass.piecannon.App"
-
-STUB_POM="<project xmlns='http://maven.apache.org/POM/4.0.0' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd'> <modelVersion>4.0.0</modelVersion> <groupId>$PC_GROUP</groupId> <artifactId>piecannon-launcher</artifactId> <version>$PC_VERSION</version> <dependencies> <dependency><groupId>$PC_GROUP</groupId><artifactId>$PC_ARTIFACT</artifactId><version>\${project.version}</version></dependency></dependencies></project>"
-STUB_POM_FILE=/tmp/pc.xml
-echo $STUB_POM > $STUB_POM_FILE
-
-RESULT=$(mvn -f $STUB_POM_FILE -B exec:java -Dexec.mainClass=$PC_CLASS -Dexec.arguments=$1 -Dorg.slf4j.simpleLogger.defaultLogLevel=WARN | tail -n 1)
-xdg-open $RESULT

desktop/piecannon.in

@@ -0,0 +1,10 @@
+#!/bin/sh
+JAR_PATH=@JAR_PATH@
+
+if [ "$1" = "--file-selector" ]; then
+    RESULT=$(java -jar "$JAR_PATH" $(yad --file))
+else
+    RESULT=$(java -jar "$JAR_PATH" "$@")
+fi
+
+xdg-open $RESULT

desktop/pom.xml

@@ -27,11 +27,6 @@
             <artifactId>xdg-java</artifactId>
             <version>0.1.1</version>
         </dependency>
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>2.8.6</version>
-        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -62,6 +57,31 @@
 				<artifactId>maven-surefire-plugin</artifactId>
 				<version>2.22.2</version>
 			</plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <mainClass>net.monarchpass.piecannon.App</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.2.4</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                            <goals>
+                                <goal>shade</goal>
+                            </goals>
+                    </execution>
+                </executions>
+            </plugin>
 		</plugins>
 	</build>
 </project>

desktop/src/main/java/net/monarchpass/piecannon/App.java

@@ -3,26 +3,9 @@ package net.monarchpass.piecannon;
 import java.net.URI;
 
 import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.FileInputStream;
-import java.io.InputStreamReader;
-
-import java.util.Collections;
-import java.util.Random;
 import java.util.List;
-import java.util.ArrayList;
-import java.util.stream.Collectors;
-
 import org.freedesktop.BaseDirectory;
 
-import com.google.common.collect.Streams;
-
-import com.google.gson.JsonArray;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-
 import lombok.extern.java.Log;
 import java.util.logging.Level;
 
@@ -30,7 +13,8 @@ import java.util.logging.Level;
 public class App {
     public static void main (final String... args) throws Exception {
         final File serversJson = getServersJson();
-        final List<Server> servers = loadServersFrom(serversJson);
+        final PieCannon cannon = new PieCannon();
+        final List<Server> servers = cannon.loadServersFrom(serversJson);
         log.log(Level.INFO, "{0} servers loaded from {1}", new Object[] {
             servers.size(), serversJson
         });
@@ -40,15 +24,21 @@ public class App {
             System.exit(1);
         }
 
-        final Server server = servers.get(new Random().nextInt(servers.size()));
-        log.log(Level.INFO, "Randomly selected server: {0}", server.getLabel());
-        
         if (args.length == 0) {
             log.log(Level.SEVERE, "No filename provided");
             System.exit(1);
         }
         
-        final File source = new File(args[0]);
+        final Server server = cannon.selectServer();
+        log.log(Level.INFO, "Randomly selected server: {0}", server.getLabel());
+        
+        final String arg = args[0];
+        if (arg.equals("--test")) {
+            testServers(servers);
+            return;
+        }
+        
+        final File source = new File(arg);
         if (!source.exists()) {
             log.log(Level.SEVERE, "No such file: {0}", source);
             System.exit(1);
@@ -58,19 +48,20 @@ public class App {
         System.out.println(result);
     }
  
-    public static List<Server> loadServersFrom (final File serversJson) throws IOException {
+    public static void testServers (final List<Server> servers) {
-        if (!serversJson.exists()) {
+        log.log(Level.INFO, "Testing all defined servers");
-            return Collections.EMPTY_LIST;
+        for (final Server server : servers) {
+            Object result;
+            try {
+                result = PieCannon.testServer(server);
+            }
+            catch (final Exception exception) {
+                result = exception;
             }
             
-        final ServerFactory factory = new ServerFactory();
+            log.log(Level.INFO, "{0} {1}: {2}", new Object[] {
-        try (final InputStream in = new FileInputStream(serversJson)) {
+                server.getClass().getSimpleName(), server.getLabel(), result
-            final JsonParser parser = new JsonParser();
+            });
-            return Streams.stream(parser.parse(new InputStreamReader(in)).getAsJsonArray())
-                .filter(JsonElement::isJsonObject)
-                .map(JsonObject.class::cast)
-                .map(factory)
-                .collect(Collectors.toList());
         }
     }
  

desktop/src/main/java/net/monarchpass/piecannon/ServerFactory.java

@@ -1,29 +0,0 @@
-package net.monarchpass.piecannon;
-
-import java.net.URI;
-
-import java.util.function.Function;
-
-import com.google.gson.JsonObject;
-import net.monarchpass.piecannon.impl.SftpServer;
-
-public class ServerFactory implements Function<JsonObject, Server> {
-    public Server apply (final JsonObject object) {
-        return makeSftpServer(object);
-    }
-    
-    private Server makeSftpServer (final JsonObject object) {
-        final String host = object.getAsJsonPrimitive("host").getAsString();
-        final String label = object.has("label") ? object.getAsJsonPrimitive("label").getAsString() : host;
-        final int port = object.has("port") ? object.getAsJsonPrimitive("port").getAsInt() : 22;
-        final String username = object.getAsJsonPrimitive("username").getAsString();
-        final String password = object.getAsJsonPrimitive("password").getAsString();
-        final String path = object.getAsJsonPrimitive("path").getAsString();
-        final String url = object.getAsJsonPrimitive("url").getAsString();
-        
-        return new SftpServer(
-            label, host, port, username, password,
-            path, URI.create(url)
-        );
-    }
-}

guix_activate_environment

@@ -1,2 +1,2 @@
 #!/bin/sh
-guix environment --ad-hoc icedtea:jdk maven
+guix environment --ad-hoc icedtea:jdk maven fdroidserver

lib/.classpath

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="target/generated-sources/annotations">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="ignore_optional_problems" value="true"/>
+			<attribute name="m2e-apt" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="ignore_optional_problems" value="true"/>
+			<attribute name="m2e-apt" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

lib/.factorypath

@@ -0,0 +1,14 @@
+<factorypath>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/github/mwiede/jsch/0.1.60/jsch-0.1.60.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/guava/30.0-android/guava-30.0-android.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/checkerframework/checker-compat-qual/2.5.5/checker-compat-qual-2.5.5.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-http/6.0.3/jodd-http-6.0.3.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/jodd/jodd-util/6.0.0/jodd-util-6.0.0.jar" enabled="true" runInBatchMode="false"/>
+    <factorypathentry kind="VARJAR" id="M2_REPO/org/projectlombok/lombok/1.18.16/lombok-1.18.16.jar" enabled="true" runInBatchMode="false"/>
+</factorypath>

lib/.project

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>libpiecannon</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1603692553450</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

lib/.settings/org.eclipse.jdt.apt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.apt.aptEnabled=true
+org.eclipse.jdt.apt.genSrcDir=target/generated-sources/annotations
+org.eclipse.jdt.apt.genTestSrcDir=target/generated-test-sources/test-annotations

lib/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,9 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
+org.eclipse.jdt.core.compiler.processAnnotations=enabled
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=1.8

lib/.settings/org.eclipse.m2e.core.prefs

@@ -0,0 +1,4 @@
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

lib/pom.xml

@@ -22,6 +22,16 @@
             <artifactId>guava</artifactId>
             <version>30.0-android</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.8.6</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jodd</groupId>
+            <artifactId>jodd-http</artifactId>
+            <version>6.0.3</version>
+        </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>

lib/src/main/java/net/monarchpass/piecannon/PieCannon.java

@@ -2,18 +2,58 @@ package net.monarchpass.piecannon;
 
 import java.net.URI;
 
+import java.io.File;
 import java.io.InputStream;
+import java.io.FileInputStream;
+import java.io.InputStreamReader;
 import java.io.IOException;
 
 import java.util.List;
 import java.util.ArrayList;
-import java.util.Collections;
+import java.util.Random;
 
 import com.google.common.base.Charsets;
 import com.google.common.io.CharSource;
 import com.google.common.io.ByteStreams;
 
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+
+import net.monarchpass.piecannon.util.ServerFactory;
+
 public class PieCannon {
+    public List<Server> servers;
+    
+    public List<Server> loadServersFrom (final File serversJson) throws IOException {
+        try (final InputStream in = new FileInputStream(serversJson)) {
+            return loadServersFrom(in);
+        }
+    }
+    
+    public List<Server> loadServersFrom (final InputStream in) throws IOException {
+        final ServerFactory factory = new ServerFactory();
+        final JsonParser parser = new JsonParser();
+        final List<Server> loadedServers = new ArrayList<>();
+        for (final JsonElement element : parser.parse(new InputStreamReader(in)).getAsJsonArray()) {
+            if (!element.isJsonObject()) {
+                continue;
+            }
+            
+            loadedServers.add(factory.apply((JsonObject)element));
+        }
+        servers = loadedServers;
+        return loadedServers;
+    }    
+    
+    public Server selectServer () {
+        if (servers == null) {
+            throw new IllegalStateException("Servers are not loaded");
+        }
+        
+        return servers.get(new Random().nextInt(servers.size()));    
+    }
+    
     public static boolean testServer (final Server server) {
         final String testString = "piecannon-test-" + System.currentTimeMillis();
         final URI result = server.upload("piecannon.test", CharSource.wrap(testString).asByteSource(Charsets.UTF_8));

lib/src/main/java/net/monarchpass/piecannon/impl/FtpServer.java

@@ -0,0 +1,45 @@
+package net.monarchpass.piecannon.impl;
+
+import net.monarchpass.piecannon.Server;
+import com.google.common.io.ByteSource;
+import com.google.common.io.ByteStreams;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URL;
+import java.net.URLConnection;
+
+import lombok.Data;
+
+@Data
+public class FtpServer implements Server {
+    private final String label;
+    private final String host;
+    private final int port;
+    private final String username;
+    private final String password;
+    private final String path;
+    private final URI uri;
+    
+    public URI upload (String name, ByteSource source) {
+        name = name.replace(" ", "%20");
+        
+        try {
+            final URI target = URI.create(uri.toString() + "/" + name);
+            final URL ftpUrl = new URL(String.format("ftp://%s:%s@%s:%d/%s/%s;type=i", username, password, host, port, path, name));
+            final URLConnection connection = ftpUrl.openConnection();
+            
+            try (InputStream in = source.openStream()) {
+                try (OutputStream out = connection.getOutputStream()) {
+                    ByteStreams.copy(in, out);
+                }
+            }
+            
+            return target;
+        } catch (final IOException exception) {
+            throw new RuntimeException(exception);
+        }
+    }
+}

lib/src/main/java/net/monarchpass/piecannon/impl/GoFileServer.java

@@ -0,0 +1,46 @@
+package net.monarchpass.piecannon.impl;
+
+import java.net.URI;
+import java.util.Map;
+
+import com.google.common.io.ByteSource;
+import com.google.gson.Gson;
+
+import jodd.http.HttpRequest;
+import lombok.Data;
+import net.monarchpass.piecannon.Server;
+import net.monarchpass.piecannon.util.ByteSourceUploadable;
+
+@Data
+public class GoFileServer implements Server {
+    public static final String DEFAULT_HOST = "gofile.io";
+    public static final String DEFAULT_API_HOST = "apiv2." + DEFAULT_HOST;
+    
+    private final Gson gson = new Gson();
+    private final String label;
+    private String host = DEFAULT_HOST;
+    private  String apiHost = DEFAULT_API_HOST;
+    
+	@Override
+	public URI upload (String name, ByteSource source) {
+        Response response = request(HttpRequest.get(String.format("https://%s/getServer", apiHost)));
+        
+        final String serverId = (String)response.getData().get("server");
+        response = request(HttpRequest.post(String.format("https://%s.%s/uploadFile", serverId, host))
+            .form("file", new ByteSourceUploadable(name, source)));
+        
+        final String code = (String)response.getData().get("code");
+		final URI uri = URI.create(String.format("https://%s/d/%s", host, code));
+		return uri;
+	}
+	
+	private Response request (final HttpRequest request) {
+        return gson.fromJson(request.send().bodyText(), Response.class);
+	}
+	
+	@Data
+	public static class Response {
+        public final String status;
+        public final Map<String, Object> data;
+	}
+}

lib/src/main/java/net/monarchpass/piecannon/impl/SftpServer.java

@@ -28,6 +28,8 @@ public class SftpServer implements Server {
     
     public URI upload (String name, ByteSource source) {
         try {
+            final URI target = URI.create(uri.toString() + "/" + name.replace(" ", "%20"));
+            
             final JSch jsch = new JSch();
             final Session session = jsch.getSession(username, host, port);
             session.setPassword(password);
@@ -45,7 +47,7 @@ public class SftpServer implements Server {
             }
             
             session.disconnect();
-            return URI.create(uri.toString() + "/" + name);
+            return target;
         } catch (final JSchException | IOException | SftpException exception) {
             throw new RuntimeException(exception);
         }

lib/src/main/java/net/monarchpass/piecannon/impl/WebDavServer.java

@@ -0,0 +1,42 @@
+package net.monarchpass.piecannon.impl;
+
+import java.io.IOException;
+import java.net.URI;
+
+import com.google.common.io.ByteSource;
+
+import jodd.http.HttpRequest;
+import jodd.http.HttpResponse;
+import lombok.Data;
+import net.monarchpass.piecannon.Server;
+
+@Data
+public class WebDavServer implements Server {
+    private final String label;
+    private final URI uri;
+
+    private final String username;
+    private final String password;
+    
+	@Override
+	public URI upload (String name, ByteSource source) {
+        try {
+            final URI target = URI.create(uri.toString() + "/" + name.replace(" ", "%20"));
+            final HttpRequest request = HttpRequest.put(target.toString())
+                .body(source.read(), "");
+            
+            if (username != null && password != null) {
+                request.basicAuthentication(username, password);
+            }
+            
+            final HttpResponse response = request.send();
+            if (response.statusCode() >= 400) {
+                throw new RuntimeException(response.statusCode() + ": " + response.statusPhrase());
+            }
+            
+            return target;        
+        } catch (final IOException exception) {
+            throw new RuntimeException(exception);
+        }
+	}
+}

lib/src/main/java/net/monarchpass/piecannon/util/ByteSourceUploadable.java

@@ -0,0 +1,54 @@
+package net.monarchpass.piecannon.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import com.google.common.io.ByteSource;
+
+import jodd.http.HttpException;
+import jodd.http.upload.Uploadable;
+import lombok.Data;
+
+@Data
+public class ByteSourceUploadable implements Uploadable<ByteSource> {
+    private final String fileName;
+    private final ByteSource source;
+    
+    @Override
+    public ByteSource getContent () {
+        return source;
+    }
+
+    @Override
+    public byte[] getBytes () {
+        try {
+            return source.read();
+        } catch (final IOException exception) {
+            throw new HttpException(exception);
+        }
+    }
+
+    @Override
+    public String getFileName () {
+        return fileName;
+    }
+
+    @Override
+    public String getMimeType () {
+        return null;
+    }
+
+    @Override
+    public int getSize () {
+        try {
+            return (int) source.size();
+        } catch (final IOException exception) {
+            throw new HttpException(exception);
+        }
+    }
+
+    @Override
+    public InputStream openInputStream () throws IOException {
+        return source.openStream();
+    }
+}

lib/src/main/java/net/monarchpass/piecannon/util/ServerFactory.java

@@ -0,0 +1,81 @@
+package net.monarchpass.piecannon.util;
+
+import java.net.URI;
+import java.util.Optional;
+import java.util.function.Function;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+
+import net.monarchpass.piecannon.Server;
+import net.monarchpass.piecannon.impl.FtpServer;
+import net.monarchpass.piecannon.impl.GoFileServer;
+import net.monarchpass.piecannon.impl.SftpServer;
+import net.monarchpass.piecannon.impl.WebDavServer;
+
+public class ServerFactory implements Function<JsonObject, Server> {
+    public Server apply (final JsonObject object) {
+        final String type = Optional.ofNullable(object.getAsJsonPrimitive("type"))
+            .map(JsonPrimitive::getAsString)
+            .orElse("webdav");
+        
+        if (type.equals("webdav")) {
+            return makeWebDavServer(object);
+        } else if (type.equalsIgnoreCase("gofile")) {
+            return new GoFileServer(Optional.ofNullable(object.getAsJsonPrimitive("label")).map(JsonPrimitive::getAsString).orElse("GoFile"));
+        } else if (type.equalsIgnoreCase("ftp")) {
+            return makeFtpServer(object);
+        } else if (type.equalsIgnoreCase("sftp")) {
+            return makeSftpServer(object);
+        }
+        
+        throw new IllegalArgumentException("Invalid server type: " + type); 
+    }
+    
+    private Server makeWebDavServer (final JsonObject object) {
+        final String label = Optional.ofNullable(object.getAsJsonPrimitive("label"))
+            .map(JsonPrimitive::getAsString)
+            .orElse("WebDav");
+        final String username = Optional.ofNullable(object.getAsJsonPrimitive("username"))
+            .map(JsonPrimitive::getAsString)
+            .orElse(null);
+        final String password = Optional.ofNullable(object.getAsJsonPrimitive("password"))
+            .map(JsonPrimitive::getAsString)
+            .orElse(null);
+        final String url = object.getAsJsonPrimitive("url").getAsString();
+        
+        return new WebDavServer(
+            label, URI.create(url), username, password
+        );
+    }    
+    
+    private Server makeSftpServer (final JsonObject object) {
+        final String host = object.getAsJsonPrimitive("host").getAsString();
+        final String label = object.has("label") ? object.getAsJsonPrimitive("label").getAsString() : host;
+        final int port = object.has("port") ? object.getAsJsonPrimitive("port").getAsInt() : 22;
+        final String username = object.getAsJsonPrimitive("username").getAsString();
+        final String password = object.getAsJsonPrimitive("password").getAsString();
+        final String path = object.getAsJsonPrimitive("path").getAsString();
+        final String url = object.getAsJsonPrimitive("url").getAsString();
+        
+        return new SftpServer(
+            label, host, port, username, password,
+            path, URI.create(url)
+        );
+    }
+    
+    private Server makeFtpServer (final JsonObject object) {
+        final String host = object.getAsJsonPrimitive("host").getAsString();
+        final String label = object.has("label") ? object.getAsJsonPrimitive("label").getAsString() : host;
+        final int port = object.has("port") ? object.getAsJsonPrimitive("port").getAsInt() : 21;
+        final String username = object.getAsJsonPrimitive("username").getAsString();
+        final String password = object.getAsJsonPrimitive("password").getAsString();
+        final String path = object.getAsJsonPrimitive("path").getAsString();
+        final String url = object.getAsJsonPrimitive("url").getAsString();
+        
+        return new FtpServer(
+            label, host, port, username, password,
+            path, URI.create(url)
+        );
+    }    
+}

lib/src/test/java/net/monarchpass/piecannon/GoFileTest.java

@@ -0,0 +1,27 @@
+package net.monarchpass.piecannon;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.util.logging.Level;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+import lombok.extern.java.Log;
+import net.monarchpass.piecannon.impl.GoFileServer;
+
+@Log
+public class GoFileTest {
+    @Test
+    @Disabled
+    public void test () throws Exception {
+        try {
+            System.setProperty("https.protocols", "TLSv1.2");
+            final GoFileServer server = new GoFileServer("GoFileTest");
+            assertThat(PieCannon.testServer(server)).isTrue();
+        } catch (final Exception exception) {
+            log.log(Level.SEVERE, "", exception);
+            throw exception;
+        }
+    }
+}

pom.xml

@@ -7,9 +7,22 @@
     <version>0.0.1-SNAPSHOT</version>
     <packaging>pom</packaging>
  
+    <profiles>
+        <profile>
+            <id>android</id>
+            <activation>
+                <property>
+                    <name>env.ANDROID_HOME</name>
+                </property>
+            </activation>
+            <modules>
+                <module>android</module>
+            </modules>
+        </profile>
+    </profiles>    
+    
     <modules>
        <module>lib</module>
        <module>desktop</module>
-       <module>android</module>
     </modules>
 </project>

servers.example.json

@@ -0,0 +1,8 @@
+[{
+    "type": "ftp",
+    "host": "example.com",
+    "username": "username",
+    "password": "password",
+    "path": "www/stuff",
+    "url": "https://example.com/stuff"
+}]