FileTransfer reworked (first steps - functionality as is), HttpUpload

separated, some bugfixes
- HttpUpload moved into own package
- FileTransfer managed by a central manager class, several
  FileTransferService implementation can be used
  - Security initializations moved to ConversationsPlusApplication
  - Access to PowerManager moved to ConversationsPlusApplication
  - Removed unused code fragments
  - Access to HttpConnectionManager is now static

14 files changed, 709 insertions, 111 deletions

diff --git a/src/main/java/de/thedevstack/conversationsplus/services/AbstractConnectionManager.java b/src/main/java/de/thedevstack/conversationsplus/services/AbstractConnectionManager.java
index 7c937475..5456430a 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/AbstractConnectionManager.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/AbstractConnectionManager.java
@@ -31,22 +31,14 @@ import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 
 import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.ConversationsPlusApplication;
 import de.thedevstack.conversationsplus.entities.DownloadableFile;
 
 public class AbstractConnectionManager {
-	protected XmppConnectionService mXmppConnectionService;
-
-	public AbstractConnectionManager(XmppConnectionService service) {
-		this.mXmppConnectionService = service;
-	}
-
-	public XmppConnectionService getXmppConnectionService() {
-		return this.mXmppConnectionService;
-	}
 
 	public boolean hasStoragePermission() {
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-			return mXmppConnectionService.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+			return ConversationsPlusApplication.getAppContext().checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
 		} else {
 			return true;
 		}
@@ -125,9 +117,4 @@ public class AbstractConnectionManager {
 			return null;
 		}
 	}
-
-	public PowerManager.WakeLock createWakeLock(String name) {
-		PowerManager powerManager = (PowerManager) mXmppConnectionService.getSystemService(Context.POWER_SERVICE);
-		return powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,name);
-	}
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/FileTransferService.java b/src/main/java/de/thedevstack/conversationsplus/services/FileTransferService.java
new file mode 100644
index 00000000..d6ce4769
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/FileTransferService.java
@@ -0,0 +1,31 @@
+package de.thedevstack.conversationsplus.services;
+
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.entities.Transferable;
+
+/**
+ *
+ */
+public interface FileTransferService {
+    /**
+     * Transfers a file for the corresponding message.
+     * @param message the message containing the file to transfer
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    boolean transferFile(Message message);
+    /**
+     * Transfers a file for the corresponding message.
+     * @param message the message containing the file to transfer
+     * @param delay whether the message is delayed or not
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    boolean transferFile(Message message, boolean delay);
+
+    /**
+     * Checks whether a message can be sent using this service or not.
+     * @param message the message to be checked
+     * @return <code>true</code> if the message can be processed, <code>false</code> otherwise
+     */
+    boolean accept(Message message);
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/MessageArchiveService.java b/src/main/java/de/thedevstack/conversationsplus/services/MessageArchiveService.java
index cd55b42f..6402f4ed 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/MessageArchiveService.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/MessageArchiveService.java
@@ -10,6 +10,7 @@ import java.util.List;
 
 import de.thedevstack.android.logcat.Logging;
 import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.ConversationsPlusApplication;
 import de.thedevstack.conversationsplus.R;
 import de.thedevstack.conversationsplus.entities.Account;
 import de.thedevstack.conversationsplus.entities.Conversation;
@@ -290,7 +291,7 @@ public class MessageArchiveService implements OnAdvancedStreamFeaturesLoaded {
 			this.account = account;
 			this.start = start;
 			this.end = end;
-			this.queryId = new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
+			this.queryId = new BigInteger(50, ConversationsPlusApplication.getSecureRandom()).toString(32);
 		}
 		
 		private Query page(String reference) {
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/XmppConnectionService.java b/src/main/java/de/thedevstack/conversationsplus/services/XmppConnectionService.java
index 9c0e55db..83cefc80 100644
--- a/src/main/java/de/thedevstack/conversationsplus/services/XmppConnectionService.java
+++ b/src/main/java/de/thedevstack/conversationsplus/services/XmppConnectionService.java
@@ -12,7 +12,6 @@ import android.graphics.Bitmap;
 import android.media.AudioManager;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
-import android.net.Uri;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Bundle;
@@ -58,8 +57,7 @@ import de.duenndns.ssl.MemorizingTrustManager;
 import de.thedevstack.android.logcat.Logging;
 import de.thedevstack.conversationsplus.ConversationsPlusApplication;
 import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
-import de.thedevstack.conversationsplus.exceptions.FileCopyException;
-import de.thedevstack.conversationsplus.utils.FileUtils;
+import de.thedevstack.conversationsplus.services.filetransfer.FileTransferManager;
 import de.thedevstack.conversationsplus.utils.ImageUtil;
 import de.thedevstack.conversationsplus.utils.MessageUtil;
 import de.thedevstack.conversationsplus.utils.UiUpdateHelper;
@@ -97,7 +95,6 @@ import de.thedevstack.conversationsplus.ui.UiCallback;
 import de.thedevstack.conversationsplus.utils.CryptoHelper;
 import de.thedevstack.conversationsplus.utils.ExceptionHelper;
 import de.thedevstack.conversationsplus.utils.OnPhoneContactsLoadedListener;
-import de.thedevstack.conversationsplus.utils.PRNGFixes;
 import de.thedevstack.conversationsplus.utils.PhoneHelper;
 import de.thedevstack.conversationsplus.utils.Xmlns;
 import de.thedevstack.conversationsplus.xml.Element;
@@ -148,7 +145,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 			startService(intent);
 		}
 	};
-	private MemorizingTrustManager mMemorizingTrustManager;
 	private NotificationService mNotificationService = new NotificationService(
 			this);
 	private OnMessagePacketReceived mMessageParser = new MessageParser(this);
@@ -169,8 +165,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	private MessageGenerator mMessageGenerator = new MessageGenerator();
 	private PresenceGenerator mPresenceGenerator = new PresenceGenerator();
 	private List<Account> accounts;
-	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager(
-			this);
+	private JingleConnectionManager mJingleConnectionManager = new JingleConnectionManager();
 	public OnContactStatusChanged onContactStatusChanged = new OnContactStatusChanged() {
 
 		@Override
@@ -197,8 +192,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 			}
 		}
 	};
-	private HttpConnectionManager mHttpConnectionManager = new HttpConnectionManager(
-			this);
 	private MessageArchiveService mMessageArchiveService = new MessageArchiveService(this);
 	private PushManagementService mPushManagementService = new PushManagementService(this);
 	private OnConversationUpdate mOnConversationUpdate = null;
@@ -239,7 +232,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	private int mucRosterChangedListenerCount = 0;
 	private OnKeyStatusUpdated mOnKeyStatusUpdated = null;
 	private int keyStatusUpdatedListenerCount = 0;
-	private SecureRandom mRandom;
 	private LruCache<Pair<String,String>,ServiceDiscoveryResult> discoCache = new LruCache<>(20);
 	private final OnBindListener mOnBindListener = new OnBindListener() {
 
@@ -311,7 +303,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 						&& checkListeners();
 				Logging.d(Config.LOGTAG,account.getJid().toBareJid()+": push mode "+Boolean.toString(pushMode));
 				if (!disabled && !pushMode) {
-					int timeToReconnect = mRandom.nextInt(20) + 10;
+					int timeToReconnect = ConversationsPlusApplication.getSecureRandom().nextInt(20) + 10;
 					scheduleWakeUpCall(timeToReconnect, account.getUuid().hashCode());
 				}
 			} else if (account.getStatus() == Account.State.REGISTRATION_SUCCESSFUL) {
@@ -334,8 +326,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	private OpenPgpServiceConnection pgpServiceConnection;
 	private PgpEngine mPgpEngine = null;
 	private WakeLock wakeLock;
-	private PowerManager pm;
-	private LruCache<String, Bitmap> mBitmapCache;
 	private Thread mPhoneContactMergerThread;
 	private EventReceiver mEventReceiver = new EventReceiver();
 
@@ -577,17 +567,8 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	@Override
 	public void onCreate() {
 		ExceptionHelper.init(getApplicationContext());
-		PRNGFixes.apply();
-		this.mRandom = new SecureRandom();
-		updateMemorizingTrustmanager();
 		final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
 		final int cacheSize = maxMemory / 8;
-		this.mBitmapCache = new LruCache<String, Bitmap>(cacheSize) {
-			@Override
-			protected int sizeOf(final String key, final Bitmap bitmap) {
-				return bitmap.getByteCount() / 1024;
-			}
-		};
 
 		this.databaseBackend = DatabaseBackend.getInstance(getApplicationContext());
 		this.accounts = databaseBackend.getAccounts();
@@ -614,8 +595,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 			this.pgpServiceConnection.bindToService();
 		}
 
-		this.pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
-		this.wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "XmppConnectionService");
+		this.wakeLock = ConversationsPlusApplication.createPartialWakeLock("XmppConnectionService");
 		toggleForegroundService();
 		updateUnreadCountBadge();
         UiUpdateHelper.initXmppConnectionService(this);
@@ -628,7 +608,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		super.onTrimMemory(level);
 		if (level >= TRIM_MEMORY_COMPLETE) {
 			Log.d(Config.LOGTAG, "clear cache due to low memory");
-			getBitmapCache().evictAll();
+			ImageUtil.evictBitmapCache();
 		}
 	}
 
@@ -739,16 +719,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		}
 	}
 
-	private void sendFileMessage(final Message message, final boolean delay) {
-		Logging.d(Config.LOGTAG, "send file message");
-		final Account account = message.getConversation().getAccount();
-		if (account.httpUploadAvailable(FileBackend.getFile(message,false).getSize())) {
-			mHttpConnectionManager.createNewUploadConnection(message, delay);
-		} else {
-			mJingleConnectionManager.createNewConnection(message);
-		}
-	}
-
 	public void sendMessage(final Message message) {
 		sendMessage(message, false, false);
 	}
@@ -776,28 +746,23 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		}
 
 		if (account.isOnlineAndConnected()) {
+            FileTransferManager fileTransferManager = FileTransferManager.getInstance();
 			switch (message.getEncryption()) {
 				case Message.ENCRYPTION_NONE:
-					if (message.needsUploading()) {
-						if (account.httpUploadAvailable(FileBackend.getFile(message,false).getSize())
-								|| message.fixCounterpart()) {
-							this.sendFileMessage(message, delay);
-						} else {
-							break;
-						}
+					if (fileTransferManager.accept(message)) {
+                        if (!fileTransferManager.transferFile(message, delay)) {
+                            break;
+                        }
 					} else {
 						packet = mMessageGenerator.generateChat(message);
 					}
 					break;
 				case Message.ENCRYPTION_PGP:
 				case Message.ENCRYPTION_DECRYPTED:
-					if (message.needsUploading()) {
-						if (account.httpUploadAvailable(FileBackend.getFile(message,false).getSize())
-								|| message.fixCounterpart()) {
-							this.sendFileMessage(message, delay);
-						} else {
-							break;
-						}
+                    if (fileTransferManager.accept(message)) {
+                        if (!fileTransferManager.transferFile(message, delay)) {
+                            break;
+                        }
 					} else {
 						packet = mMessageGenerator.generatePgpChat(message);
 					}
@@ -810,7 +775,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 						} catch (InvalidJidException e) {
 							break;
 						}
-						if (message.needsUploading()) {
+						if (message.needsUploading()) { //TODO: Use FileTransferManager with a preselection of filetransfer method
 							mJingleConnectionManager.createNewConnection(message);
 						} else {
 							packet = mMessageGenerator.generateOtrChat(message);
@@ -828,13 +793,10 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 					break;
 				case Message.ENCRYPTION_AXOLOTL:
 					message.setFingerprint(account.getAxolotlService().getOwnFingerprint());
-					if (message.needsUploading()) {
-						if (account.httpUploadAvailable(FileBackend.getFile(message,false).getSize())
-								|| message.fixCounterpart()) {
-							this.sendFileMessage(message, delay);
-						} else {
-							break;
-						}
+                    if (fileTransferManager.accept(message)) {
+                        if (!fileTransferManager.transferFile(message, delay)) {
+                            break;
+                        }
 					} else {
 						XmppAxolotlMessage axolotlMessage = account.getAxolotlService().fetchAxolotlMessageFromCache(message);
 						if (axolotlMessage == null) {
@@ -1331,7 +1293,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 						callback.onAccountCreated(account);
 						if (Config.X509_VERIFICATION) {
 							try {
-								getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
+								ConversationsPlusApplication.getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
 							} catch (CertificateException e) {
 								callback.informUser(R.string.certificate_chain_is_not_trusted);
 							}
@@ -1359,7 +1321,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 				databaseBackend.updateAccount(account);
 				if (Config.X509_VERIFICATION) {
 					try {
-						getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
+                        ConversationsPlusApplication.getMemorizingTrustManager().getNonInteractive().checkClientTrusted(chain, "RSA");
 					} catch (CertificateException e) {
 						showErrorToastInUi(R.string.certificate_chain_is_not_trusted);
 					}
@@ -1901,7 +1863,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 					}
 					return;
 				}
-				String name = new BigInteger(75, getRNG()).toString(32);
+				String name = new BigInteger(75, ConversationsPlusApplication.getSecureRandom()).toString(32);
 				Jid jid = Jid.fromParts(name, server, null);
 				final Conversation conversation = findOrCreateConversation(account, jid, true);
 				joinMuc(conversation, new OnConferenceJoined() {
@@ -2170,7 +2132,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	public boolean renewSymmetricKey(Conversation conversation) {
 		Account account = conversation.getAccount();
 		byte[] symmetricKey = new byte[32];
-		this.mRandom.nextBytes(symmetricKey);
+		ConversationsPlusApplication.getSecureRandom().nextBytes(symmetricKey);
 		Session otrSession = conversation.getOtrSession();
 		if (otrSession != null) {
 			MessagePacket packet = new MessagePacket();
@@ -2440,36 +2402,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		}
 	}
 
-	public SecureRandom getRNG() {
-		return this.mRandom;
-	}
-
-	public MemorizingTrustManager getMemorizingTrustManager() {
-		return this.mMemorizingTrustManager;
-	}
-
-	public void setMemorizingTrustManager(MemorizingTrustManager trustManager) {
-		this.mMemorizingTrustManager = trustManager;
-	}
-
-	public void updateMemorizingTrustmanager() {
-		final MemorizingTrustManager tm;
-		if (ConversationsPlusPreferences.dontTrustSystemCAs()) {
-			 tm = new MemorizingTrustManager(getApplicationContext(), null);
-		} else {
-			tm = new MemorizingTrustManager(getApplicationContext());
-		}
-		setMemorizingTrustManager(tm);
-	}
-
-	public PowerManager getPowerManager() {
-		return this.pm;
-	}
-
-	public LruCache<String, Bitmap> getBitmapCache() {
-		return this.mBitmapCache;
-	}
-
 	public void syncRosterToDisk(final Account account) {
 		Runnable runnable = new Runnable() {
 
@@ -2599,10 +2531,6 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		return this.mNotificationService;
 	}
 
-	public HttpConnectionManager getHttpConnectionManager() {
-		return this.mHttpConnectionManager;
-	}
-
 	public void resendFailedMessages(final Message message) {
         if (message.getStatus() == Message.STATUS_SEND_FAILED) {
             message.setTime(System.currentTimeMillis());
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/AbstractFileTransferService.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/AbstractFileTransferService.java
new file mode 100644
index 00000000..02bd04b9
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/AbstractFileTransferService.java
@@ -0,0 +1,31 @@
+package de.thedevstack.conversationsplus.services.filetransfer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.services.FileTransferService;
+
+/**
+ *
+ */
+public abstract class AbstractFileTransferService implements FileTransferService, FileTransferStatusListener {
+    protected List<Message> failedMessages = new ArrayList<>();
+
+    @Override
+    public void onFailure(Message message, boolean delay) {
+        this.failedMessages.add(message);
+    }
+
+    @Override
+    public void onSuccess(Message message, boolean delay) {
+        if (this.failedMessages.contains(message)) {
+            this.failedMessages.remove(message);
+        }
+    }
+
+    @Override
+    public boolean accept(Message message) {
+        return !this.failedMessages.contains(message);
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferEntity.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferEntity.java
new file mode 100644
index 00000000..a44cf49d
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferEntity.java
@@ -0,0 +1,108 @@
+package de.thedevstack.conversationsplus.services.filetransfer;
+
+import java.io.InputStream;
+
+import de.thedevstack.conversationsplus.entities.DownloadableFile;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.entities.Transferable;
+import de.thedevstack.conversationsplus.persistance.FileBackend;
+import de.thedevstack.conversationsplus.utils.MessageUtil;
+
+/**
+ *
+ */
+public class FileTransferEntity implements Transferable {
+    private final Message message;
+    private int tries = 0;
+    private boolean transferred = false;
+    private boolean canceled = false;
+    private boolean failed = false;
+    private long transmitted = 0;
+    private DownloadableFile file;
+    private InputStream fileInputStream;
+
+    public FileTransferEntity(Message message) {
+        this.message = message;
+        this.message.setTransferable(this);
+        this.file = FileBackend.getFile(message, false);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        FileTransferEntity other = (FileTransferEntity)o;
+        if ((this.message == null && other.message != null)
+            || (this.message != null && other.message == null)) {
+            return false;
+        } else if (this.message == null && other.message == null) {
+            return true;
+        }
+        return this.message.getUuid().equals(other.message.getUuid());
+    }
+
+    @Override
+    public boolean start() {
+        return false;
+    }
+
+    @Override
+    public int getStatus() {
+        int status = (failed) ? STATUS_FAILED : STATUS_UPLOADING;
+        return status;
+    }
+
+    @Override
+    public long getFileSize() {
+        return file == null ? 0 : file.getExpectedSize();
+    }
+
+    @Override
+    public int getProgress() {
+        if (file == null) {
+            return 0;
+        }
+        return (int) ((((double) transmitted) / file.getExpectedSize()) * 100);
+    }
+
+    @Override
+    public void cancel() {
+        this.canceled = true;
+    }
+
+    public void fail() {
+        this.failed = true;
+        this.getMessage().setTransferable(null);
+        MessageUtil.markMessage(this.getMessage(), Message.STATUS_SEND_FAILED);
+    }
+
+    public Message getMessage() {
+        return message;
+    }
+
+    public boolean isCanceled() {
+        return this.canceled;
+    }
+
+    public boolean isFailed() {
+        return failed;
+    }
+
+    public void updateProgress(long progress) {
+        this.transmitted += progress;
+    }
+
+    public DownloadableFile getFile() {
+        return file;
+    }
+
+    public void transferred() {
+        this.transferred = true;
+    }
+
+    public void setFileInputStream(InputStream fileInputStream) {
+        this.fileInputStream = fileInputStream;
+    }
+
+    public InputStream getFileInputStream() {
+        return fileInputStream;
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java
new file mode 100644
index 00000000..f7b3f4e2
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferManager.java
@@ -0,0 +1,127 @@
+package de.thedevstack.conversationsplus.services.filetransfer;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.services.FileTransferService;
+
+/**
+ *
+ */
+public class FileTransferManager implements FileTransferService {
+    private SortedSet<WeightedTransferService> transferServices;
+    private static final FileTransferManager INSTANCE = new FileTransferManager();
+
+    private FileTransferManager() {
+        this.transferServices = new TreeSet<>();
+    }
+
+    public static FileTransferManager getInstance() {
+        return INSTANCE;
+    }
+
+    public static void init(FileTransferService... fileTransferServices) {
+        if (null != fileTransferServices && fileTransferServices.length > 0) {
+            for (FileTransferService fts : fileTransferServices) {
+                addFileTransferService(fts);
+            }
+        }
+    }
+
+    public static void init(HashMap<Integer, FileTransferService> fileTransferServices) {
+        for (Map.Entry<Integer, FileTransferService> entry : fileTransferServices.entrySet()) {
+            addFileTransferService(entry.getKey(), entry.getValue());
+        }
+    }
+
+    public static void addFileTransferService(int weight, FileTransferService fts) {
+        INSTANCE.transferServices.add(new WeightedTransferService(weight, fts));
+    }
+
+    public static void addFileTransferService(FileTransferService fts) {
+        int weight = 1;
+        if (!INSTANCE.transferServices.isEmpty()) {
+            weight = INSTANCE.transferServices.last().weight + 1;
+        }
+        addFileTransferService(weight, fts);
+    }
+
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    public boolean transferFile(Message message) {
+        return this.transferFile(message, false);
+    }
+
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @param delay   whether the message is delayed or not
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    @Override
+    public boolean transferFile(Message message, boolean delay) {
+        Logging.d(Config.LOGTAG, "send file message");
+        boolean transferSuccessfullyStarted = false;
+        for (WeightedTransferService wts : this.transferServices) {
+            try {
+                if (wts.fileTransferService.accept(message)) {
+                    transferSuccessfullyStarted = wts.fileTransferService.transferFile(message, delay);
+                    if (transferSuccessfullyStarted) {
+                        break;
+                    }
+                }
+            } catch (Exception e) {
+                //TODO Do real exception handling!!!!!
+            }
+        }
+        return transferSuccessfullyStarted;
+    }
+
+    /**
+     * Checks whether a message can be sent using this service or not.
+     *
+     * @param message the message to be checked
+     * @return <code>true</code> if the message can be processed, <code>false</code> otherwise
+     */
+    @Override
+    public boolean accept(Message message) {
+        return message.needsUploading();
+    }
+
+    static class WeightedTransferService implements Comparable<WeightedTransferService> {
+        int weight;
+        FileTransferService fileTransferService;
+
+        WeightedTransferService(int weight, FileTransferService service) {
+            this.weight = weight;
+            this.fileTransferService = service;
+        }
+
+        /**
+         * Compares this object to the specified object to determine their relative
+         * order.
+         *
+         * @param another the object to compare to this instance.
+         * @return a negative integer if this instance is less than {@code another};
+         * a positive integer if this instance is greater than
+         * {@code another}; 0 if this instance has the same order as
+         * {@code another}.
+         * @throws ClassCastException if {@code another} cannot be converted into something
+         *                            comparable to {@code this} instance.
+         */
+        @Override
+        public int compareTo(WeightedTransferService another) {
+            return this.weight - another.weight;
+        }
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferStatusListener.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferStatusListener.java
new file mode 100644
index 00000000..89af5b39
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/FileTransferStatusListener.java
@@ -0,0 +1,11 @@
+package de.thedevstack.conversationsplus.services.filetransfer;
+
+import de.thedevstack.conversationsplus.entities.Message;
+
+/**
+ *
+ */
+public interface FileTransferStatusListener {
+    void onFailure(Message message, boolean delay);
+    void onSuccess(Message message, boolean delay);
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileTransferEntity.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileTransferEntity.java
new file mode 100644
index 00000000..8efd498b
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileTransferEntity.java
@@ -0,0 +1,52 @@
+package de.thedevstack.conversationsplus.services.filetransfer.httpupload;
+
+import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.ConversationsPlusApplication;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.services.filetransfer.FileTransferEntity;
+import de.thedevstack.conversationsplus.xmpp.httpupload.HttpUploadSlot;
+
+/**
+ *
+ */
+public class HttpFileTransferEntity extends FileTransferEntity {
+    private HttpUploadSlot slot;
+    private final byte[] key;
+    private final boolean delayed;
+
+    public HttpFileTransferEntity(Message message, boolean delayed) {
+        super(message);
+        this.getMessage().setHttpUploaded(true);
+        this.getMessage().setNoDownloadable();
+        if (Config.ENCRYPT_ON_HTTP_UPLOADED
+                || message.getEncryption() == Message.ENCRYPTION_AXOLOTL
+                || message.getEncryption() == Message.ENCRYPTION_OTR) {
+            this.key = new byte[48];
+            ConversationsPlusApplication.getSecureRandom().nextBytes(this.key);
+            this.getFile().setKeyAndIv(this.key);
+        } else {
+            this.key = null;
+        }
+        this.delayed = delayed;
+    }
+
+    public void setSlot(HttpUploadSlot slot) {
+        this.slot = slot;
+    }
+
+    public String getGetUrl() {
+        return this.slot.getGetUrl();
+    }
+
+    public String getPutUrl() {
+        return this.slot.getPutUrl();
+    }
+
+    public byte[] getKey() {
+        return key;
+    }
+
+    public boolean isDelayed() {
+        return this.delayed;
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileUploader.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileUploader.java
new file mode 100644
index 00000000..6352c7a7
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpFileUploader.java
@@ -0,0 +1,120 @@
+package de.thedevstack.conversationsplus.services.filetransfer.httpupload;
+
+import android.os.PowerManager;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Scanner;
+
+import javax.net.ssl.HttpsURLConnection;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.Config;
+import de.thedevstack.conversationsplus.ConversationsPlusApplication;
+import de.thedevstack.conversationsplus.entities.DownloadableFile;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.http.HttpConnectionManager;
+import de.thedevstack.conversationsplus.persistance.FileBackend;
+import de.thedevstack.conversationsplus.utils.CryptoHelper;
+import de.thedevstack.conversationsplus.utils.MessageUtil;
+import de.thedevstack.conversationsplus.utils.StreamUtil;
+import de.thedevstack.conversationsplus.utils.UiUpdateHelper;
+import de.thedevstack.conversationsplus.utils.XmppConnectionServiceAccessor;
+import de.thedevstack.conversationsplus.xmpp.httpupload.HttpUpload;
+
+public class HttpFileUploader implements Runnable {
+    private static final String HTTP_METHOD = "PUT";
+    private static final String MIME_REQUEST_PROPERTY_NAME = "Content-Type";
+    private static final String USER_AGENT_REQUEST_PROPERTY_NAME = "User-Agent";
+    private static final int BUFFER_LENGTH = 4096;
+    private final HttpFileTransferEntity entity;
+
+    public HttpFileUploader(HttpFileTransferEntity entity) {
+        this.entity = entity;
+    }
+
+    @Override
+    public void run() {
+        this.upload();
+    }
+
+    private void upload() {
+        OutputStream os = null;
+        InputStream errorStream = null;
+        HttpURLConnection connection = null;
+        InputStream fileInputStream = null;
+        DownloadableFile file = this.entity.getFile();
+        PowerManager.WakeLock wakeLock = ConversationsPlusApplication.createPartialWakeLock("http_upload_" + entity.getMessage().getUuid());
+        try {
+            wakeLock.acquire();
+            Logging.d(Config.LOGTAG, "uploading to " + this.entity.getPutUrl());
+            URL putUrl = new URL(this.entity.getPutUrl());
+            fileInputStream = this.entity.getFileInputStream();
+            connection = (HttpURLConnection) putUrl.openConnection();
+
+            if (connection instanceof HttpsURLConnection) {
+                HttpConnectionManager.setupTrustManager((HttpsURLConnection) connection, true);
+            }
+            connection.setRequestMethod(HTTP_METHOD);
+            connection.setFixedLengthStreamingMode((int) file.getExpectedSize());
+            String mime = this.entity.getFile().getMimeType();
+            connection.setRequestProperty(MIME_REQUEST_PROPERTY_NAME, mime == null ? HttpUpload.DEFAULT_MIME_TYPE : mime);
+            connection.setRequestProperty(USER_AGENT_REQUEST_PROPERTY_NAME, ConversationsPlusApplication.getNameAndVersion());
+            connection.setDoOutput(true);
+            connection.connect();
+            os = connection.getOutputStream();
+            int count = -1;
+            byte[] buffer = new byte[BUFFER_LENGTH];
+            while (((count = fileInputStream.read(buffer)) != -1) && !this.entity.isCanceled()) {
+                this.entity.updateProgress(count);
+                os.write(buffer, 0, count);
+                UiUpdateHelper.updateConversationUi();
+            }
+            os.flush();
+            os.close();
+            fileInputStream.close();
+            int code = connection.getResponseCode();
+            if (code == 200 || code == 201) {
+                Logging.d(Config.LOGTAG, "finished uploading file");
+                this.entity.transferred();
+                URL getUrl = new URL(this.entity.getGetUrl());
+                if (this.entity.getKey() != null) {
+                    getUrl = new URL(getUrl.toString() + "#" + CryptoHelper.bytesToHex(this.entity.getKey()));
+                }
+                Message message = this.entity.getMessage();
+                MessageUtil.updateFileParams(message, getUrl);
+                FileBackend.updateMediaScanner(file, XmppConnectionServiceAccessor.xmppConnectionService);
+                message.setTransferable(null);
+                message.setCounterpart(message.getConversation().getJid().toBareJid());
+                if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
+                    XmppConnectionServiceAccessor.xmppConnectionService.getPgpEngine().encrypt(message, new HttpUploadedFileEncryptionUiCallback(this.entity));
+                } else {
+                    XmppConnectionServiceAccessor.xmppConnectionService.resendMessage(message, this.entity.isDelayed());
+                }
+            } else {
+                errorStream = connection.getErrorStream();
+                Logging.e("httpupload", "file upload failed: http code (" + code + ") " + new Scanner(errorStream).useDelimiter("\\A").next());
+                this.entity.fail();
+            }
+        } catch (IOException e) {
+            errorStream = (null != connection) ? connection.getErrorStream() : null;
+            String httpResponseMessage = null;
+            if (null != errorStream) {
+                httpResponseMessage = new Scanner(errorStream).useDelimiter("\\A").next();
+            }
+            Logging.e("httpupload", ((null != httpResponseMessage) ? ("http response: " + httpResponseMessage + ", ") : "") + "exception message: " + e.getMessage());
+            this.entity.fail();
+        } finally {
+            StreamUtil.close(os);
+            StreamUtil.close(errorStream);
+            StreamUtil.close(fileInputStream);
+            if (connection != null) {
+                connection.disconnect();
+            }
+            wakeLock.release();
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadFileTransferService.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadFileTransferService.java
new file mode 100644
index 00000000..59957d1e
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadFileTransferService.java
@@ -0,0 +1,84 @@
+package de.thedevstack.conversationsplus.services.filetransfer.httpupload;
+
+import android.util.Pair;
+
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.entities.DownloadableFile;
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.persistance.FileBackend;
+import de.thedevstack.conversationsplus.services.AbstractConnectionManager;
+import de.thedevstack.conversationsplus.services.FileTransferService;
+import de.thedevstack.conversationsplus.services.filetransfer.AbstractFileTransferService;
+import de.thedevstack.conversationsplus.utils.MessageUtil;
+import de.thedevstack.conversationsplus.utils.XmppSendUtil;
+import de.thedevstack.conversationsplus.xmpp.httpupload.HttpUpload;
+import de.thedevstack.conversationsplus.xmpp.httpupload.HttpUploadRequestSlotPacketGenerator;
+import de.thedevstack.conversationsplus.xmpp.jid.Jid;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+
+/**
+ *
+ */
+public class HttpUploadFileTransferService extends AbstractFileTransferService implements FileTransferService {
+
+    public HttpUploadFileTransferService() {
+    }
+
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @return <code>true</code> if the file transfer was started successfully, <code>false</code> otherwise
+     */
+    @Override
+    public boolean transferFile(Message message) {
+        return this.transferFile(message, false);
+    }
+
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @param delay   whether the message is delayed or not
+     * @return <code>true</code> if the file transfer was started successfully, <code>false</code> otherwise
+     */
+    @Override
+    public boolean transferFile(Message message, boolean delay) {
+        boolean started = false;
+        try {
+            final HttpFileTransferEntity entity = new HttpFileTransferEntity(message, delay);
+            Account account = message.getConversation().getAccount();
+            DownloadableFile file = entity.getFile();
+            Pair<InputStream, Integer> inputStreamAndExpectedSize = AbstractConnectionManager.createInputStream(file, true);
+
+            entity.setFileInputStream(inputStreamAndExpectedSize.first);
+            file.setExpectedSize(inputStreamAndExpectedSize.second);
+            Jid host = account.getXmppConnection().findDiscoItemByFeature(HttpUpload.NAMESPACE);
+            IqPacket request = HttpUploadRequestSlotPacketGenerator.generate(host, file.getName(), file.getSize(), file.getMimeType());
+            XmppSendUtil.sendIqPacket(account, request, new HttpUploadSlotRequestReceived(entity));
+            MessageUtil.markMessage(message, Message.STATUS_UNSEND);
+            started = true;
+        } catch (FileNotFoundException e) {
+            Logging.e("httpupload", "Could not find file, exception message: " + e.getMessage());
+        }
+        return started;
+    }
+
+    /**
+     * Checks whether a message can be sent using this service or not.
+     *
+     * @param message the message to be checked
+     * @return <code>true</code> if the message can be processed, <code>false</code> otherwise
+     */
+    @Override
+    public boolean accept(Message message) {
+        return null != message
+                && null != message.getConversation()
+                && null != message.getConversation().getAccount()
+                && message.getConversation().getAccount().httpUploadAvailable(FileBackend.getFile(message, false).getSize());
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadSlotRequestReceived.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadSlotRequestReceived.java
new file mode 100644
index 00000000..e0b2332a
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadSlotRequestReceived.java
@@ -0,0 +1,34 @@
+package de.thedevstack.conversationsplus.services.filetransfer.httpupload;
+
+import de.thedevstack.android.logcat.Logging;
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.xmpp.OnIqPacketReceived;
+import de.thedevstack.conversationsplus.xmpp.exceptions.XmppException;
+import de.thedevstack.conversationsplus.xmpp.httpupload.HttpUploadSlot;
+import de.thedevstack.conversationsplus.xmpp.httpupload.SlotPacketParser;
+import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
+
+/**
+ *
+ */
+public class HttpUploadSlotRequestReceived implements OnIqPacketReceived {
+    private final HttpFileTransferEntity entity;
+
+    public HttpUploadSlotRequestReceived(HttpFileTransferEntity entity) {
+        this.entity = entity;
+    }
+
+    @Override
+    public void onIqPacketReceived(Account account, IqPacket packet) {
+        try {
+            HttpUploadSlot slot = SlotPacketParser.parseGetAndPutUrl(packet);
+            this.entity.setSlot(slot);
+            if (!this.entity.isCanceled()) {
+                new Thread(new HttpFileUploader(this.entity)).start();
+            }
+        } catch (XmppException e) {
+            Logging.e("httpupload", e.getMessage());
+            this.entity.fail();
+        }
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadedFileEncryptionUiCallback.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadedFileEncryptionUiCallback.java
new file mode 100644
index 00000000..25a16d78
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/httpupload/HttpUploadedFileEncryptionUiCallback.java
@@ -0,0 +1,33 @@
+package de.thedevstack.conversationsplus.services.filetransfer.httpupload;
+
+import android.app.PendingIntent;
+
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.ui.UiCallback;
+import de.thedevstack.conversationsplus.utils.XmppConnectionServiceAccessor;
+
+/**
+ *
+ */
+public class HttpUploadedFileEncryptionUiCallback implements UiCallback<Message> {
+    private final HttpFileTransferEntity entity;
+
+    public HttpUploadedFileEncryptionUiCallback(HttpFileTransferEntity entity) {
+        this.entity = entity;
+    }
+
+    @Override
+    public void success(Message message) {
+        XmppConnectionServiceAccessor.xmppConnectionService.resendMessage(message, this.entity.isDelayed());
+    }
+
+    @Override
+    public void error(int errorCode, Message object) {
+        this.entity.fail();
+    }
+
+    @Override
+    public void userInputRequried(PendingIntent pi, Message object) {
+        this.entity.fail();
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/jingle/JingleFileTransferService.java b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/jingle/JingleFileTransferService.java
new file mode 100644
index 00000000..46ee7ce5
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/filetransfer/jingle/JingleFileTransferService.java
@@ -0,0 +1,51 @@
+package de.thedevstack.conversationsplus.services.filetransfer.jingle;
+
+import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.services.FileTransferService;
+import de.thedevstack.conversationsplus.xmpp.jingle.JingleConnection;
+import de.thedevstack.conversationsplus.xmpp.jingle.JingleConnectionManager;
+
+/**
+ *
+ */
+public class JingleFileTransferService implements FileTransferService {
+    private final JingleConnectionManager jingleConnectionManager;
+
+    public JingleFileTransferService() {
+        this.jingleConnectionManager = new JingleConnectionManager();
+    }
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    @Override
+    public boolean transferFile(Message message) {
+        return this.transferFile(message, false);
+    }
+
+    /**
+     * Transfers a file for the corresponding message.
+     *
+     * @param message the message containing the file to transfer
+     * @param delay   whether the message is delayed or not
+     * @return <code>true</code> if the file transfer was successful, <code>false</code> otherwise
+     */
+    @Override
+    public boolean transferFile(Message message, boolean delay) {
+        JingleConnection jingleConnection = this.jingleConnectionManager.createNewConnection(message);
+        return null != jingleConnection;
+    }
+
+    /**
+     * Checks whether a message can be sent using this service or not.
+     *
+     * @param message the message to be checked
+     * @return <code>true</code> if the message can be processed, <code>false</code> otherwise
+     */
+    @Override
+    public boolean accept(Message message) {
+        return message.fixCounterpart(); // No clue why - but this seems to be the check for jingle file transfer
+    }
+}