Merge branch 'feature/http_upload' into development

22 files changed, 475 insertions, 232 deletions

diff --git a/src/main/java/eu/siacs/conversations/Config.java b/src/main/java/eu/siacs/conversations/Config.java
index 779cbbe86..ce91244d8 100644
--- a/src/main/java/eu/siacs/conversations/Config.java
+++ b/src/main/java/eu/siacs/conversations/Config.java
@@ -32,6 +32,8 @@ public final class Config {
 	public static final boolean EXTENDED_SM_LOGGING = true; // log stanza counts
 	public static final boolean RESET_ATTEMPT_COUNT_ON_NETWORK_CHANGE = true; //setting to true might increase power consumption
 
+	public static final boolean ENCRYPT_ON_HTTP_UPLOADED = false;
+
 	public static final long MILLISECONDS_IN_DAY = 24 * 60 * 60 * 1000;
 	public static final long MAM_MAX_CATCHUP =  MILLISECONDS_IN_DAY / 2;
 	public static final int MAM_MAX_MESSAGES = 500;
diff --git a/src/main/java/eu/siacs/conversations/crypto/PgpEngine.java b/src/main/java/eu/siacs/conversations/crypto/PgpEngine.java
index ad5a41323..32b9b9242 100644
--- a/src/main/java/eu/siacs/conversations/crypto/PgpEngine.java
+++ b/src/main/java/eu/siacs/conversations/crypto/PgpEngine.java
@@ -59,7 +59,7 @@ public class PgpEngine {
 								message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 								final HttpConnectionManager manager = mXmppConnectionService.getHttpConnectionManager();
 								if (message.trusted()
-										&& message.bodyContainsDownloadable()
+										&& message.treatAsDownloadable() == Message.Decision.YES
 										&& manager.getAutoAcceptFileSize() > 0) {
 									manager.createNewConnection(message);
 								}
@@ -98,7 +98,7 @@ public class PgpEngine {
 						switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
 								OpenPgpApi.RESULT_CODE_ERROR)) {
 						case OpenPgpApi.RESULT_CODE_SUCCESS:
-							URL url = message.getImageParams().url;
+							URL url = message.getFileParams().url;
 							mXmppConnectionService.getFileBackend().updateFileParams(message,url);
 							message.setEncryption(Message.ENCRYPTION_DECRYPTED);
 							PgpEngine.this.mXmppConnectionService
@@ -143,11 +143,15 @@ public class PgpEngine {
 		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, message
 				.getConversation().getAccount().getJid().toBareJid().toString());
 
-		if (message.getType() == Message.TYPE_TEXT) {
+		if (!message.needsUploading()) {
 			params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
-
-			InputStream is = new ByteArrayInputStream(message.getBody()
-					.getBytes());
+			String body;
+			if (message.hasFileOnRemoteHost()) {
+				body = message.getFileParams().url.toString();
+			} else {
+				body = message.getBody();
+			}
+			InputStream is = new ByteArrayInputStream(body.getBytes());
 			final OutputStream os = new ByteArrayOutputStream();
 			api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
 
@@ -184,7 +188,7 @@ public class PgpEngine {
 					}
 				}
 			});
-		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
+		} else {
 			try {
 				DownloadableFile inputFile = this.mXmppConnectionService
 						.getFileBackend().getFile(message, true);
diff --git a/src/main/java/eu/siacs/conversations/entities/Account.java b/src/main/java/eu/siacs/conversations/entities/Account.java
index 6e6dcb6a0..f472361f2 100644
--- a/src/main/java/eu/siacs/conversations/entities/Account.java
+++ b/src/main/java/eu/siacs/conversations/entities/Account.java
@@ -44,6 +44,10 @@ public class Account extends AbstractEntity {
 	public static final int OPTION_REGISTER = 2;
 	public static final int OPTION_USECOMPRESSION = 3;
 
+	public boolean httpUploadAvailable() {
+		return xmppConnection != null && xmppConnection.getFeatures().httpUpload();
+	}
+
 	public static enum State {
 		DISABLED,
 		OFFLINE,
diff --git a/src/main/java/eu/siacs/conversations/entities/Downloadable.java b/src/main/java/eu/siacs/conversations/entities/Downloadable.java
index d25bf93a8..c32165e8e 100644
--- a/src/main/java/eu/siacs/conversations/entities/Downloadable.java
+++ b/src/main/java/eu/siacs/conversations/entities/Downloadable.java
@@ -2,27 +2,25 @@ package eu.siacs.conversations.entities;
 
 public interface Downloadable {
 
-	public final String[] VALID_IMAGE_EXTENSIONS = {"webp", "jpeg", "jpg", "png", "jpe"};
-	public final String[] VALID_CRYPTO_EXTENSIONS = {"pgp", "gpg", "otr"};
+	String[] VALID_IMAGE_EXTENSIONS = {"webp", "jpeg", "jpg", "png", "jpe"};
+	String[] VALID_CRYPTO_EXTENSIONS = {"pgp", "gpg", "otr"};
 
-	public static final int STATUS_UNKNOWN = 0x200;
-	public static final int STATUS_CHECKING = 0x201;
-	public static final int STATUS_FAILED = 0x202;
-	public static final int STATUS_OFFER = 0x203;
-	public static final int STATUS_DOWNLOADING = 0x204;
-	public static final int STATUS_DELETED = 0x205;
-	public static final int STATUS_OFFER_CHECK_FILESIZE = 0x206;
-	public static final int STATUS_UPLOADING = 0x207;
+	int STATUS_UNKNOWN = 0x200;
+	int STATUS_CHECKING = 0x201;
+	int STATUS_FAILED = 0x202;
+	int STATUS_OFFER = 0x203;
+	int STATUS_DOWNLOADING = 0x204;
+	int STATUS_DELETED = 0x205;
+	int STATUS_OFFER_CHECK_FILESIZE = 0x206;
+	int STATUS_UPLOADING = 0x207;
 
-	public boolean start();
+	boolean start();
 
-	public int getStatus();
+	int getStatus();
 
-	public long getFileSize();
+	long getFileSize();
 
-	public int getProgress();
+	int getProgress();
 
-	public String getMimeType();
-
-	public void cancel();
+	void cancel();
 }
diff --git a/src/main/java/eu/siacs/conversations/entities/DownloadablePlaceholder.java b/src/main/java/eu/siacs/conversations/entities/DownloadablePlaceholder.java
index 03fceceb7..cce22ea39 100644
--- a/src/main/java/eu/siacs/conversations/entities/DownloadablePlaceholder.java
+++ b/src/main/java/eu/siacs/conversations/entities/DownloadablePlaceholder.java
@@ -28,11 +28,6 @@ public class DownloadablePlaceholder implements Downloadable {
 	}
 
 	@Override
-	public String getMimeType() {
-		return "";
-	}
-
-	@Override
 	public void cancel() {
 
 	}
diff --git a/src/main/java/eu/siacs/conversations/entities/Message.java b/src/main/java/eu/siacs/conversations/entities/Message.java
index a63d033d2..1f622bf4f 100644
--- a/src/main/java/eu/siacs/conversations/entities/Message.java
+++ b/src/main/java/eu/siacs/conversations/entities/Message.java
@@ -375,8 +375,8 @@ public class Message extends AbstractEntity {
 						(message.getTimeSent() - this.getTimeSent()) <= (Config.MESSAGE_MERGE_WINDOW * 1000) &&
 						!GeoHelper.isGeoUri(message.getBody()) &&
 						!GeoHelper.isGeoUri(this.body) &&
-						!message.bodyContainsDownloadable() &&
-						!this.bodyContainsDownloadable() &&
+						message.treatAsDownloadable() == Decision.NO &&
+						this.treatAsDownloadable() == Decision.NO &&
 						!message.getBody().startsWith(ME_COMMAND) &&
 						!this.getBody().startsWith(ME_COMMAND) &&
 						!this.bodyIsHeart() &&
@@ -434,48 +434,50 @@ public class Message extends AbstractEntity {
 		return (status > STATUS_RECEIVED || (contact != null && contact.trusted()));
 	}
 
-	public boolean bodyContainsDownloadable() {
-		/**
-		 * there are a few cases where spaces result in an unwanted behavior, e.g.
-		 * "http://example.com/image.jpg text that will not be shown /abc.png"
-		 * or more than one image link in one message.
-		 */
+	public enum Decision {
+		YES,
+		NO,
+		ASK
+	}
+
+	public Decision treatAsDownloadable() {
 		if (body.trim().contains(" ")) {
-			return false;
+			return Decision.NO;
 		}
 		try {
 			URL url = new URL(body);
-			if (!url.getProtocol().equalsIgnoreCase("http")
-					&& !url.getProtocol().equalsIgnoreCase("https")) {
-				return false;
+			if (!url.getProtocol().equalsIgnoreCase("http") && !url.getProtocol().equalsIgnoreCase("https")) {
+				return Decision.NO;
 			}
-
-			String sUrlPath = url.getPath();
-			if (sUrlPath == null || sUrlPath.isEmpty()) {
-				return false;
+			String path = url.getPath();
+			if (path == null || path.isEmpty()) {
+				return Decision.NO;
 			}
 
-			int iSlashIndex = sUrlPath.lastIndexOf('/') + 1;
-
-			String sLastUrlPath = sUrlPath.substring(iSlashIndex).toLowerCase();
-
-			String[] extensionParts = sLastUrlPath.split("\\.");
-			if (extensionParts.length == 2
-					&& Arrays.asList(Downloadable.VALID_IMAGE_EXTENSIONS).contains(
-					extensionParts[extensionParts.length - 1])) {
-				return true;
-			} else if (extensionParts.length == 3
-					&& Arrays
+			String filename = path.substring(path.lastIndexOf('/') + 1).toLowerCase();
+			String[] extensionParts = filename.split("\\.");
+			String extension;
+			String ref = url.getRef();
+			if (extensionParts.length == 2) {
+				extension = extensionParts[extensionParts.length - 1];
+			} else if (extensionParts.length == 3 && Arrays
 					.asList(Downloadable.VALID_CRYPTO_EXTENSIONS)
-					.contains(extensionParts[extensionParts.length - 1])
-					&& Arrays.asList(Downloadable.VALID_IMAGE_EXTENSIONS).contains(
-					extensionParts[extensionParts.length - 2])) {
-				return true;
+					.contains(extensionParts[extensionParts.length - 1])) {
+				extension = extensionParts[extensionParts.length -2];
+			} else {
+				return Decision.NO;
+			}
+
+			if (Arrays.asList(Downloadable.VALID_IMAGE_EXTENSIONS).contains(extension)) {
+				return Decision.YES;
+			} else if (ref != null && ref.matches("([A-Fa-f0-9]{2}){48}")) {
+				return Decision.ASK;
 			} else {
-				return false;
+				return Decision.NO;
 			}
+
 		} catch (MalformedURLException e) {
-			return false;
+			return Decision.NO;
 		}
 	}
 
@@ -483,12 +485,12 @@ public class Message extends AbstractEntity {
 		return body != null && UIHelper.HEARTS.contains(body.trim());
 	}
 
-	public ImageParams getImageParams() {
-		ImageParams params = getLegacyImageParams();
+	public FileParams getFileParams() {
+		FileParams params = getLegacyFileParams();
 		if (params != null) {
 			return params;
 		}
-		params = new ImageParams();
+		params = new FileParams();
 		if (this.downloadable != null) {
 			params.size = this.downloadable.getFileSize();
 		}
@@ -496,61 +498,64 @@ public class Message extends AbstractEntity {
 			return params;
 		}
 		String parts[] = body.split("\\|");
-		if (parts.length == 1) {
-			try {
-				params.size = Long.parseLong(parts[0]);
-			} catch (NumberFormatException e) {
-				params.origin = parts[0];
+		switch (parts.length) {
+			case 1:
+				try {
+					params.size = Long.parseLong(parts[0]);
+				} catch (NumberFormatException e) {
+					try {
+						params.url = new URL(parts[0]);
+					} catch (MalformedURLException e1) {
+						params.url = null;
+					}
+				}
+				break;
+			case 2:
+			case 4:
 				try {
 					params.url = new URL(parts[0]);
 				} catch (MalformedURLException e1) {
 					params.url = null;
 				}
-			}
-		} else if (parts.length == 3) {
-			try {
-				params.size = Long.parseLong(parts[0]);
-			} catch (NumberFormatException e) {
-				params.size = 0;
-			}
-			try {
-				params.width = Integer.parseInt(parts[1]);
-			} catch (NumberFormatException e) {
-				params.width = 0;
-			}
-			try {
-				params.height = Integer.parseInt(parts[2]);
-			} catch (NumberFormatException e) {
-				params.height = 0;
-			}
-		} else if (parts.length == 4) {
-			params.origin = parts[0];
-			try {
-				params.url = new URL(parts[0]);
-			} catch (MalformedURLException e1) {
-				params.url = null;
-			}
-			try {
-				params.size = Long.parseLong(parts[1]);
-			} catch (NumberFormatException e) {
-				params.size = 0;
-			}
-			try {
-				params.width = Integer.parseInt(parts[2]);
-			} catch (NumberFormatException e) {
-				params.width = 0;
-			}
-			try {
-				params.height = Integer.parseInt(parts[3]);
-			} catch (NumberFormatException e) {
-				params.height = 0;
-			}
+				try {
+					params.size = Long.parseLong(parts[1]);
+				} catch (NumberFormatException e) {
+					params.size = 0;
+				}
+				try {
+					params.width = Integer.parseInt(parts[2]);
+				} catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
+					params.width = 0;
+				}
+				try {
+					params.height = Integer.parseInt(parts[3]);
+				} catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
+					params.height = 0;
+				}
+				break;
+			case 3:
+				try {
+					params.size = Long.parseLong(parts[0]);
+				} catch (NumberFormatException e) {
+					params.size = 0;
+				}
+				try {
+					params.width = Integer.parseInt(parts[1]);
+				} catch (NumberFormatException e) {
+					params.width = 0;
+				}
+				try {
+					params.height = Integer.parseInt(parts[2]);
+				} catch (NumberFormatException e) {
+					params.height = 0;
+				}
+				break;
 		}
 		return params;
 	}
 
-	public ImageParams getLegacyImageParams() {
-		ImageParams params = new ImageParams();
+	public FileParams getLegacyFileParams() {
+		FileParams params = new FileParams();
 		if (body == null) {
 			return params;
 		}
@@ -586,11 +591,18 @@ public class Message extends AbstractEntity {
 		return type == TYPE_FILE || type == TYPE_IMAGE;
 	}
 
-	public class ImageParams {
+	public boolean hasFileOnRemoteHost() {
+		return isFileOrImage() && getFileParams().url != null;
+	}
+
+	public boolean needsUploading() {
+		return isFileOrImage() && getFileParams().url == null;
+	}
+
+	public class FileParams {
 		public URL url;
 		public long size = 0;
 		public int width = 0;
 		public int height = 0;
-		public String origin;
 	}
 }
diff --git a/src/main/java/eu/siacs/conversations/generator/IqGenerator.java b/src/main/java/eu/siacs/conversations/generator/IqGenerator.java
index d7366daa8..47915e3fb 100644
--- a/src/main/java/eu/siacs/conversations/generator/IqGenerator.java
+++ b/src/main/java/eu/siacs/conversations/generator/IqGenerator.java
@@ -6,6 +6,7 @@ import java.util.List;
 
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.entities.DownloadableFile;
 import eu.siacs.conversations.services.MessageArchiveService;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.utils.PhoneHelper;
@@ -102,7 +103,7 @@ public class IqGenerator extends AbstractGenerator {
 	public IqPacket retrieveVcardAvatar(final Avatar avatar) {
 		final IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
 		packet.setTo(avatar.owner);
-		packet.addChild("vCard","vcard-temp");
+		packet.addChild("vCard", "vcard-temp");
 		return packet;
 	}
 
@@ -194,4 +195,13 @@ public class IqGenerator extends AbstractGenerator {
 		item.setAttribute("role", role);
 		return packet;
 	}
+
+	public IqPacket requestHttpUploadSlot(Jid host, DownloadableFile file) {
+		IqPacket packet = new IqPacket(IqPacket.TYPE.GET);
+		packet.setTo(host);
+		Element request = packet.addChild("request",Xmlns.HTTP_UPLOAD);
+		request.addChild("filename").setContent(file.getName());
+		request.addChild("size").setContent(String.valueOf(file.getExpectedSize()));
+		return packet;
+	}
 }
diff --git a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
index 474a3e1dc..bc1148d9a 100644
--- a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
+++ b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
@@ -73,7 +73,13 @@ public class MessageGenerator extends AbstractGenerator {
 		packet.addChild("no-copy", "urn:xmpp:hints");
 		packet.addChild("no-permanent-store", "urn:xmpp:hints");
 		try {
-			packet.setBody(otrSession.transformSending(message.getBody())[0]);
+			String content;
+			if (message.hasFileOnRemoteHost()) {
+				content = message.getFileParams().url.toString();
+			} else {
+				content = message.getBody();
+			}
+			packet.setBody(otrSession.transformSending(content)[0]);
 			return packet;
 		} catch (OtrException e) {
 			return null;
@@ -86,7 +92,11 @@ public class MessageGenerator extends AbstractGenerator {
 
 	public MessagePacket generateChat(Message message, boolean addDelay) {
 		MessagePacket packet = preparePacket(message, addDelay);
-		packet.setBody(message.getBody());
+		if (message.hasFileOnRemoteHost()) {
+			packet.setBody(message.getFileParams().url.toString());
+		} else {
+			packet.setBody(message.getBody());
+		}
 		return packet;
 	}
 
@@ -96,13 +106,11 @@ public class MessageGenerator extends AbstractGenerator {
 
 	public MessagePacket generatePgpChat(Message message, boolean addDelay) {
 		MessagePacket packet = preparePacket(message, addDelay);
-		packet.setBody("This is an XEP-0027 encryted message");
+		packet.setBody("This is an XEP-0027 encrypted message");
 		if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
-			packet.addChild("x", "jabber:x:encrypted").setContent(
-					message.getEncryptedBody());
+			packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
 		} else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
-			packet.addChild("x", "jabber:x:encrypted").setContent(
-					message.getBody());
+			packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
 		}
 		return packet;
 	}
diff --git a/src/main/java/eu/siacs/conversations/http/HttpConnection.java b/src/main/java/eu/siacs/conversations/http/HttpConnection.java
index e7d309190..002611dca 100644
--- a/src/main/java/eu/siacs/conversations/http/HttpConnection.java
+++ b/src/main/java/eu/siacs/conversations/http/HttpConnection.java
@@ -269,8 +269,8 @@ public class HttpConnection implements Downloadable {
 		}
 
 		private void updateImageBounds() {
-			message.setType(Message.TYPE_IMAGE);
-			mXmppConnectionService.getFileBackend().updateFileParams(message,mUrl);
+			message.setType(Message.TYPE_FILE);
+			mXmppConnectionService.getFileBackend().updateFileParams(message, mUrl);
 			mXmppConnectionService.updateMessage(message);
 		}
 
@@ -302,9 +302,4 @@ public class HttpConnection implements Downloadable {
 	public int getProgress() {
 		return this.mProgress;
 	}
-
-	@Override
-	public String getMimeType() {
-		return "";
-	}
 }
diff --git a/src/main/java/eu/siacs/conversations/http/HttpConnectionManager.java b/src/main/java/eu/siacs/conversations/http/HttpConnectionManager.java
index 9a2a24052..fc266e7b2 100644
--- a/src/main/java/eu/siacs/conversations/http/HttpConnectionManager.java
+++ b/src/main/java/eu/siacs/conversations/http/HttpConnectionManager.java
@@ -13,7 +13,8 @@ public class HttpConnectionManager extends AbstractConnectionManager {
 		super(service);
 	}
 
-	private List<HttpConnection> connections = new CopyOnWriteArrayList<HttpConnection>();
+	private List<HttpConnection> connections = new CopyOnWriteArrayList<>();
+	private List<HttpUploadConnection> uploadConnections = new CopyOnWriteArrayList<>();
 
 	public HttpConnection createNewConnection(Message message) {
 		HttpConnection connection = new HttpConnection(this);
@@ -22,7 +23,18 @@ public class HttpConnectionManager extends AbstractConnectionManager {
 		return connection;
 	}
 
+	public HttpUploadConnection createNewUploadConnection(Message message) {
+		HttpUploadConnection connection = new HttpUploadConnection(this);
+		connection.init(message);
+		this.uploadConnections.add(connection);
+		return connection;
+	}
+
 	public void finishConnection(HttpConnection connection) {
 		this.connections.remove(connection);
 	}
+
+	public void finishUploadConnection(HttpUploadConnection httpUploadConnection) {
+		this.uploadConnections.remove(httpUploadConnection);
+	}
 }
diff --git a/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java b/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java
new file mode 100644
index 000000000..d861f6164
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/http/HttpUploadConnection.java
@@ -0,0 +1,199 @@
+package eu.siacs.conversations.http;
+
+import android.app.PendingIntent;
+import android.util.Log;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Downloadable;
+import eu.siacs.conversations.entities.DownloadableFile;
+import eu.siacs.conversations.entities.Message;
+import eu.siacs.conversations.persistance.FileBackend;
+import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.ui.UiCallback;
+import eu.siacs.conversations.utils.CryptoHelper;
+import eu.siacs.conversations.utils.Xmlns;
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xmpp.OnIqPacketReceived;
+import eu.siacs.conversations.xmpp.jid.Jid;
+import eu.siacs.conversations.xmpp.stanzas.IqPacket;
+
+public class HttpUploadConnection implements Downloadable {
+
+	private HttpConnectionManager mHttpConnectionManager;
+	private XmppConnectionService mXmppConnectionService;
+
+	private boolean canceled = false;
+	private Account account;
+	private DownloadableFile file;
+	private Message message;
+	private URL mGetUrl;
+	private URL mPutUrl;
+
+	private byte[] key = null;
+
+	private long transmitted = 0;
+	private long expected = 1;
+
+	public HttpUploadConnection(HttpConnectionManager httpConnectionManager) {
+		this.mHttpConnectionManager = httpConnectionManager;
+		this.mXmppConnectionService = httpConnectionManager.getXmppConnectionService();
+	}
+
+	@Override
+	public boolean start() {
+		return false;
+	}
+
+	@Override
+	public int getStatus() {
+		return STATUS_UPLOADING;
+	}
+
+	@Override
+	public long getFileSize() {
+		return this.file.getExpectedSize();
+	}
+
+	@Override
+	public int getProgress() {
+		return (int) ((((double) transmitted) / expected) * 100);
+	}
+
+	@Override
+	public void cancel() {
+		this.canceled = true;
+	}
+
+	private void fail() {
+		mHttpConnectionManager.finishUploadConnection(this);
+		message.setDownloadable(null);
+		mXmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
+	}
+
+	public void init(Message message) {
+		this.message = message;
+		message.setDownloadable(this);
+		mXmppConnectionService.markMessage(message,Message.STATUS_UNSEND);
+		this.account = message.getConversation().getAccount();
+		this.file = mXmppConnectionService.getFileBackend().getFile(message, false);
+		this.file.setExpectedSize(this.file.getSize());
+
+		if (Config.ENCRYPT_ON_HTTP_UPLOADED) {
+			this.key = new byte[48];
+			mXmppConnectionService.getRNG().nextBytes(this.key);
+			this.file.setKey(this.key);
+		}
+
+		Jid host = account.getXmppConnection().findDiscoItemByFeature(Xmlns.HTTP_UPLOAD);
+		IqPacket request = mXmppConnectionService.getIqGenerator().requestHttpUploadSlot(host,file);
+		mXmppConnectionService.sendIqPacket(account, request, new OnIqPacketReceived() {
+			@Override
+			public void onIqPacketReceived(Account account, IqPacket packet) {
+				if (packet.getType() == IqPacket.TYPE.RESULT) {
+					Element slot = packet.findChild("slot",Xmlns.HTTP_UPLOAD);
+					if (slot != null) {
+						try {
+							mGetUrl = new URL(slot.findChildContent("get"));
+							mPutUrl = new URL(slot.findChildContent("put"));
+							if (!canceled) {
+								new Thread(new FileUploader()).start();
+							}
+						} catch (MalformedURLException e) {
+							fail();
+						}
+					} else {
+						fail();
+					}
+				} else {
+					fail();
+				}
+			}
+		});
+	}
+
+	private class FileUploader implements Runnable {
+
+		@Override
+		public void run() {
+			this.upload();
+		}
+
+		private void upload() {
+			OutputStream os = null;
+			InputStream is = null;
+			HttpURLConnection connection = null;
+			try {
+				Log.d(Config.LOGTAG, "uploading to " + mPutUrl.toString());
+				connection = (HttpURLConnection) mPutUrl.openConnection();
+				connection.setRequestMethod("PUT");
+				connection.setFixedLengthStreamingMode((int) file.getExpectedSize());
+				connection.setDoOutput(true);
+				connection.connect();
+				os = connection.getOutputStream();
+				is = file.createInputStream();
+				transmitted = 0;
+				expected = file.getExpectedSize();
+				int count = -1;
+				byte[] buffer = new byte[4096];
+				while (((count = is.read(buffer)) != -1) && !canceled) {
+					transmitted += count;
+					os.write(buffer, 0, count);
+					mXmppConnectionService.updateConversationUi();
+				}
+				os.flush();
+				os.close();
+				is.close();
+				int code = connection.getResponseCode();
+				if (code == 200) {
+					Log.d(Config.LOGTAG, "finished uploading file");
+					Message.FileParams params = message.getFileParams();
+					if (key != null) {
+						mGetUrl = new URL(mGetUrl.toString() + "#" + CryptoHelper.bytesToHex(key));
+					}
+					mXmppConnectionService.getFileBackend().updateFileParams(message, mGetUrl);
+					message.setDownloadable(null);
+					message.setCounterpart(message.getConversation().getJid().toBareJid());
+					if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
+						mXmppConnectionService.getPgpEngine().encrypt(message, new UiCallback<Message>() {
+							@Override
+							public void success(Message message) {
+								mXmppConnectionService.resendMessage(message);
+							}
+
+							@Override
+							public void error(int errorCode, Message object) {
+								fail();
+							}
+
+							@Override
+							public void userInputRequried(PendingIntent pi, Message object) {
+								fail();
+							}
+						});
+					} else {
+						mXmppConnectionService.resendMessage(message);
+					}
+				} else {
+					fail();
+				}
+			} catch (IOException e) {
+				Log.d(Config.LOGTAG, e.getMessage());
+				fail();
+			} finally {
+				FileBackend.close(is);
+				FileBackend.close(os);
+				if (connection != null) {
+					connection.disconnect();
+				}
+			}
+		}
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/parser/MessageParser.java b/src/main/java/eu/siacs/conversations/parser/MessageParser.java
index 5a40b1708..6d2aebf26 100644
--- a/src/main/java/eu/siacs/conversations/parser/MessageParser.java
+++ b/src/main/java/eu/siacs/conversations/parser/MessageParser.java
@@ -360,7 +360,7 @@ public class MessageParser extends AbstractParser implements
 				mXmppConnectionService.databaseBackend.createMessage(message);
 			}
 			final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager();
-			if (message.trusted() && message.bodyContainsDownloadable() && manager.getAutoAcceptFileSize() > 0) {
+			if (message.trusted() && message.treatAsDownloadable() == Message.Decision.YES && manager.getAutoAcceptFileSize() > 0) {
 				manager.createNewConnection(message);
 			} else if (!message.isRead()) {
 				mXmppConnectionService.getNotificationService().push(message);
diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
index e120adbd1..52373fefb 100644
--- a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -13,6 +13,7 @@ import java.security.DigestOutputStream;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.text.SimpleDateFormat;
+import java.util.Arrays;
 import java.util.Date;
 import java.util.Locale;
 
@@ -32,6 +33,7 @@ import android.webkit.MimeTypeMap;
 
 import eu.siacs.conversations.Config;
 import eu.siacs.conversations.R;
+import eu.siacs.conversations.entities.Downloadable;
 import eu.siacs.conversations.entities.DownloadableFile;
 import eu.siacs.conversations.entities.Message;
 import eu.siacs.conversations.services.XmppConnectionService;
@@ -78,10 +80,10 @@ public class FileBackend {
 			if (path.startsWith("/")) {
 				return new DownloadableFile(path);
 			} else {
-				if (message.getType() == Message.TYPE_FILE) {
+				if (Arrays.asList(Downloadable.VALID_IMAGE_EXTENSIONS).contains(extension)) {
 					return new DownloadableFile(getConversationsFileDirectory() + path);
 				} else {
-					return new DownloadableFile(getConversationsImageDirectory()+path);
+					return new DownloadableFile(getConversationsImageDirectory() + path);
 				}
 			}
 		}
@@ -217,7 +219,7 @@ public class FileBackend {
 			long size = file.getSize();
 			int width = scaledBitmap.getWidth();
 			int height = scaledBitmap.getHeight();
-			message.setBody(Long.toString(size) + ',' + width + ',' + height);
+			message.setBody(Long.toString(size) + '|' + width + '|' + height);
 			return file;
 		} catch (FileNotFoundException e) {
 			throw new FileCopyException(R.string.error_file_not_found);
@@ -497,7 +499,11 @@ public class FileBackend {
 				message.setBody(url.toString()+"|"+Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
 			}
 		} else {
-			message.setBody(Long.toString(file.getSize()));
+			if (url != null) {
+				message.setBody(url.toString()+"|"+Long.toString(file.getSize()));
+			} else {
+				message.setBody(Long.toString(file.getSize()));
+			}
 		}
 
 	}
diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index 0a264dd13..877806f33 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -390,7 +390,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 							callback.success(message);
 						}
 					} catch (FileBackend.FileCopyException e) {
-						callback.error(e.getResId(),message);
+						callback.error(e.getResId(), message);
 					}
 				}
 			});
@@ -671,6 +671,17 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		}
 	}
 
+	private void sendFileMessage(final Message message) {
+		Log.d(Config.LOGTAG, "send file message");
+		final Account account = message.getConversation().getAccount();
+		final XmppConnection connection = account.getXmppConnection();
+		if (connection != null && connection.getFeatures().httpUpload()) {
+			mHttpConnectionManager.createNewUploadConnection(message);
+		} else {
+			mJingleConnectionManager.createNewConnection(message);
+		}
+	}
+
 	public void sendMessage(final Message message) {
 		final Account account = message.getConversation().getAccount();
 		account.deactivateGracePeriod();
@@ -680,19 +691,19 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		boolean send = false;
 		if (account.getStatus() == Account.State.ONLINE
 				&& account.getXmppConnection() != null) {
-			if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
-				if (message.getCounterpart() != null) {
+			if (message.needsUploading()) {
+				if (message.getCounterpart() != null || account.httpUploadAvailable()) {
 					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
 						if (!conv.hasValidOtrSession()) {
 							conv.startOtrSession(message.getCounterpart().getResourcepart(),true);
 							message.setStatus(Message.STATUS_WAITING);
 						} else if (conv.hasValidOtrSession()
 								&& conv.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
-							mJingleConnectionManager
-								.createNewConnection(message);
-								}
+							mJingleConnectionManager.createNewConnection(message);
+						}
 					} else {
-						mJingleConnectionManager.createNewConnection(message);
+						this.sendFileMessage(message);
+
 					}
 				} else {
 					if (message.getEncryption() == Message.ENCRYPTION_OTR) {
@@ -791,12 +802,11 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 		});
 	}
 
-	private void resendMessage(final Message message) {
+	public void resendMessage(final Message message) {
 		Account account = message.getConversation().getAccount();
 		MessagePacket packet = null;
 		if (message.getEncryption() == Message.ENCRYPTION_OTR) {
-			Presences presences = message.getConversation().getContact()
-				.getPresences();
+			Presences presences = message.getConversation().getContact().getPresences();
 			if (!message.getConversation().hasValidOtrSession()) {
 				if ((message.getCounterpart() != null)
 						&& (presences.has(message.getCounterpart().getResourcepart()))) {
@@ -808,34 +818,24 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 					}
 				}
 			} else {
-				if (message.getConversation().getOtrSession()
-						.getSessionStatus() == SessionStatus.ENCRYPTED) {
+				if (message.getConversation().getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) {
 					try {
 						message.setCounterpart(Jid.fromSessionID(message.getConversation().getOtrSession().getSessionID()));
-						if (message.getType() == Message.TYPE_TEXT) {
-							packet = mMessageGenerator.generateOtrChat(message,
-									true);
-						} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
+						if (message.needsUploading()) {
 							mJingleConnectionManager.createNewConnection(message);
+						} else {
+							packet = mMessageGenerator.generateOtrChat(message, true);
 						}
 					} catch (final InvalidJidException ignored) {
 
 					}
-						}
+				}
 			}
-		} else if (message.getType() == Message.TYPE_TEXT) {
-			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
-				packet = mMessageGenerator.generateChat(message, true);
-			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
-					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
-				packet = mMessageGenerator.generatePgpChat(message, true);
-					}
-		} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
+		} else if (message.needsUploading()) {
 			Contact contact = message.getConversation().getContact();
 			Presences presences = contact.getPresences();
-			if ((message.getCounterpart() != null)
-					&& (presences.has(message.getCounterpart().getResourcepart()))) {
-				mJingleConnectionManager.createNewConnection(message);
+			if (account.httpUploadAvailable() || (message.getCounterpart() != null && presences.has(message.getCounterpart().getResourcepart()))) {
+				this.sendFileMessage(message);
 			} else {
 				if (presences.size() == 1) {
 					String presence = presences.asStringArray()[0];
@@ -844,9 +844,16 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 					} catch (InvalidJidException e) {
 						return;
 					}
-					mJingleConnectionManager.createNewConnection(message);
+					this.sendFileMessage(message);
 				}
 			}
+		} else {
+			if (message.getEncryption() == Message.ENCRYPTION_NONE) {
+				packet = mMessageGenerator.generateChat(message, true);
+			} else if ((message.getEncryption() == Message.ENCRYPTION_DECRYPTED)
+					|| (message.getEncryption() == Message.ENCRYPTION_PGP)) {
+				packet = mMessageGenerator.generatePgpChat(message, true);
+			}
 		}
 		if (packet != null) {
 			if (!account.getXmppConnection().getFeatures().sm()
@@ -1809,15 +1816,15 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 				} catch (InvalidJidException e) {
 					return;
 				}
-				if (message.getType() == Message.TYPE_TEXT) {
+				if (message.needsUploading()) {
+					mJingleConnectionManager.createNewConnection(message);
+				} else {
 					MessagePacket outPacket = mMessageGenerator.generateOtrChat(message, true);
 					if (outPacket != null) {
 						message.setStatus(Message.STATUS_SEND);
 						databaseBackend.updateMessage(message);
 						sendMessagePacket(account, outPacket);
 					}
-				} else if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE) {
-					mJingleConnectionManager.createNewConnection(message);
 				}
 				updateConversationUi();
 			}
diff --git a/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java b/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
index c48b5865c..770129abc 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConversationActivity.java
@@ -35,6 +35,7 @@ import java.util.Iterator;
 import java.util.List;
 
 import eu.siacs.conversations.R;
+import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Blockable;
 import eu.siacs.conversations.entities.Contact;
 import eu.siacs.conversations.entities.Conversation;
@@ -382,7 +383,7 @@ public class ConversationActivity extends XmppActivity
 				}
 				if (this.getSelectedConversation().getMode() == Conversation.MODE_MULTI) {
 					menuContactDetails.setVisible(false);
-					menuAttach.setVisible(false);
+					menuAttach.setVisible(getSelectedConversation().getAccount().httpUploadAvailable());
 					menuInviteContact.setVisible(getSelectedConversation().getMucOptions().canInvite());
 				} else {
 					menuMucDetails.setVisible(false);
@@ -398,6 +399,8 @@ public class ConversationActivity extends XmppActivity
 	}
 
 	private void selectPresenceToAttachFile(final int attachmentChoice, final int encryption) {
+		final Conversation conversation = getSelectedConversation();
+		final Account account = conversation.getAccount();
 		final OnPresenceSelected callback = new OnPresenceSelected() {
 
 			@Override
@@ -449,11 +452,11 @@ public class ConversationActivity extends XmppActivity
 				}
 			}
 		};
-		if (attachmentChoice == ATTACHMENT_CHOICE_LOCATION && encryption != Message.ENCRYPTION_OTR) {
-			getSelectedConversation().setNextCounterpart(null);
+		if ((account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) && encryption != Message.ENCRYPTION_OTR) {
+			conversation.setNextCounterpart(null);
 			callback.onPresenceSelected();
 		} else {
-			selectPresence(getSelectedConversation(),callback);
+			selectPresence(conversation,callback);
 		}
 	}
 
diff --git a/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java b/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
index a817b27bf..445aaa474 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
@@ -452,13 +452,12 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
 				sendAgain.setVisible(false);
 			}
-			if (((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
-					|| m.getImageParams().url == null) && !GeoHelper.isGeoUri(m.getBody())) {
+			if (!m.hasFileOnRemoteHost() && !GeoHelper.isGeoUri(m.getBody())) {
 				copyUrl.setVisible(false);
 			}
 			if (m.getType() != Message.TYPE_TEXT
 					|| m.getDownloadable() != null
-					|| !m.bodyContainsDownloadable()) {
+					|| m.treatAsDownloadable() == Message.Decision.NO) {
 				downloadImage.setVisible(false);
 			}
 			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
@@ -544,7 +543,7 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 			url = message.getBody();
 		} else {
 			resId = R.string.image_url;
-			url = message.getImageParams().url.toString();
+			url = message.getFileParams().url.toString();
 		}
 		if (activity.copyTextToClipboard(url, resId)) {
 			Toast.makeText(activity, R.string.url_copied_to_clipboard,
@@ -912,7 +911,8 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 		final SendButtonAction action;
 		final int status;
 		final boolean empty = this.mEditMessage == null || this.mEditMessage.getText().length() == 0;
-		if (c.getMode() == Conversation.MODE_MULTI) {
+		final boolean conference = c.getMode() == Conversation.MODE_MULTI;
+		if (conference && !c.getAccount().httpUploadAvailable()) {
 			if (empty && c.getNextCounterpart() != null) {
 				action = SendButtonAction.CANCEL;
 			} else {
@@ -920,28 +920,32 @@ public class ConversationFragment extends Fragment implements EditMessage.Keyboa
 			}
 		} else {
 			if (empty) {
-				String setting = activity.getPreferences().getString("quick_action","recent");
-				if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
-					setting = "location";
-				} else if (setting.equals("recent")) {
-					setting = activity.getPreferences().getString("recently_used_quick_action","text");
-				}
-				switch (setting) {
-					case "photo":
-						action = SendButtonAction.TAKE_PHOTO;
-						break;
-					case "location":
-						action = SendButtonAction.SEND_LOCATION;
-						break;
-					case "voice":
-						action = SendButtonAction.RECORD_VOICE;
-						break;
-					case "picture":
-						action = SendButtonAction.CHOOSE_PICTURE;
-						break;
-					default:
-						action = SendButtonAction.TEXT;
-						break;
+				if (conference && c.getNextCounterpart() != null) {
+					action = SendButtonAction.CANCEL;
+				} else {
+					String setting = activity.getPreferences().getString("quick_action", "recent");
+					if (!setting.equals("none") && UIHelper.receivedLocationQuestion(conversation.getLatestMessage())) {
+						setting = "location";
+					} else if (setting.equals("recent")) {
+						setting = activity.getPreferences().getString("recently_used_quick_action", "text");
+					}
+					switch (setting) {
+						case "photo":
+							action = SendButtonAction.TAKE_PHOTO;
+							break;
+						case "location":
+							action = SendButtonAction.SEND_LOCATION;
+							break;
+						case "voice":
+							action = SendButtonAction.RECORD_VOICE;
+							break;
+						case "picture":
+							action = SendButtonAction.CHOOSE_PICTURE;
+							break;
+						default:
+							action = SendButtonAction.TEXT;
+							break;
+					}
 				}
 			} else {
 				action = SendButtonAction.TEXT;
diff --git a/src/main/java/eu/siacs/conversations/ui/adapter/ConversationAdapter.java b/src/main/java/eu/siacs/conversations/ui/adapter/ConversationAdapter.java
index d5b7e4c05..5cbc73ecd 100644
--- a/src/main/java/eu/siacs/conversations/ui/adapter/ConversationAdapter.java
+++ b/src/main/java/eu/siacs/conversations/ui/adapter/ConversationAdapter.java
@@ -3,7 +3,6 @@ package eu.siacs.conversations.ui.adapter;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
-import android.graphics.Color;
 import android.graphics.Typeface;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
@@ -69,7 +68,7 @@ public class ConversationAdapter extends ArrayAdapter<Conversation> {
 			convName.setTypeface(null, Typeface.NORMAL);
 		}
 
-		if (message.getImageParams().width > 0
+		if (message.getFileParams().width > 0
 				&& (message.getDownloadable() == null
 				|| message.getDownloadable().getStatus() != Downloadable.STATUS_DELETED)) {
 			mLastMessage.setVisibility(View.GONE);
diff --git a/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java b/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
index 29dfced2e..8648f048c 100644
--- a/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
+++ b/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
@@ -32,7 +32,7 @@ import eu.siacs.conversations.entities.Conversation;
 import eu.siacs.conversations.entities.Downloadable;
 import eu.siacs.conversations.entities.DownloadableFile;
 import eu.siacs.conversations.entities.Message;
-import eu.siacs.conversations.entities.Message.ImageParams;
+import eu.siacs.conversations.entities.Message.FileParams;
 import eu.siacs.conversations.ui.ConversationActivity;
 import eu.siacs.conversations.utils.GeoHelper;
 import eu.siacs.conversations.utils.UIHelper;
@@ -100,7 +100,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 		boolean multiReceived = message.getConversation().getMode() == Conversation.MODE_MULTI
 			&& message.getMergedStatus() <= Message.STATUS_RECEIVED;
 		if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_FILE || message.getDownloadable() != null) {
-			ImageParams params = message.getImageParams();
+			FileParams params = message.getFileParams();
 			if (params.size > (1.5 * 1024 * 1024)) {
 				filesize = params.size / (1024 * 1024)+ " MiB";
 			} else if (params.size > 0) {
@@ -339,7 +339,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 		}
 		viewHolder.messageBody.setVisibility(View.GONE);
 		viewHolder.image.setVisibility(View.VISIBLE);
-		ImageParams params = message.getImageParams();
+		FileParams params = message.getFileParams();
 		double target = metrics.density * 288;
 		int scalledW;
 		int scalledH;
@@ -494,7 +494,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 		} else if (message.getType() == Message.TYPE_IMAGE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
 			displayImageMessage(viewHolder, message);
 		} else if (message.getType() == Message.TYPE_FILE && message.getEncryption() != Message.ENCRYPTION_PGP && message.getEncryption() != Message.ENCRYPTION_DECRYPTION_FAILED) {
-			if (message.getImageParams().width > 0) {
+			if (message.getFileParams().width > 0) {
 				displayImageMessage(viewHolder,message);
 			} else {
 				displayOpenableMessage(viewHolder, message);
diff --git a/src/main/java/eu/siacs/conversations/utils/Xmlns.java b/src/main/java/eu/siacs/conversations/utils/Xmlns.java
index 17fd2d261..868566d96 100644
--- a/src/main/java/eu/siacs/conversations/utils/Xmlns.java
+++ b/src/main/java/eu/siacs/conversations/utils/Xmlns.java
@@ -5,4 +5,5 @@ public final class Xmlns {
 	public static final String ROSTER = "jabber:iq:roster";
 	public static final String REGISTER = "jabber:iq:register";
 	public static final String BYTE_STREAMS = "http://jabber.org/protocol/bytestreams";
+	public static final String HTTP_UPLOAD = "eu:siacs:conversations:http:upload";
 }
diff --git a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
index 8a4389065..87dfb897b 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
@@ -1025,18 +1025,18 @@ public class XmppConnection implements Runnable {
 		this.streamId = null;
 	}
 
-	public List<String> findDiscoItemsByFeature(final String feature) {
-		final List<String> items = new ArrayList<>();
+	public List<Jid> findDiscoItemsByFeature(final String feature) {
+		final List<Jid> items = new ArrayList<>();
 		for (final Entry<Jid, Info> cursor : disco.entrySet()) {
 			if (cursor.getValue().features.contains(feature)) {
-				items.add(cursor.getKey().toString());
+				items.add(cursor.getKey());
 			}
 		}
 		return items;
 	}
 
-	public String findDiscoItemByFeature(final String feature) {
-		final List<String> items = findDiscoItemsByFeature(feature);
+	public Jid findDiscoItemByFeature(final String feature) {
+		final List<Jid> items = findDiscoItemsByFeature(feature);
 		if (items.size() >= 1) {
 			return items.get(0);
 		}
@@ -1191,6 +1191,10 @@ public class XmppConnection implements Runnable {
 		public void setBlockListRequested(boolean value) {
 			this.blockListRequested = value;
 		}
+
+		public boolean httpUpload() {
+			return findDiscoItemsByFeature(Xmlns.HTTP_UPLOAD).size() > 0;
+		}
 	}
 
 	private IqGenerator getIqGenerator() {
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
index c9bb9c93b..8e4282a9d 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
@@ -954,24 +954,4 @@ public class JingleConnection implements Downloadable {
 	public int getProgress() {
 		return this.mProgress;
 	}
-
-	@Override
-	public String getMimeType() {
-		if (this.message.getType() == Message.TYPE_FILE) {
-			String mime = null;
-			String path = this.message.getRelativeFilePath();
-			if (path != null && !this.message.getRelativeFilePath().isEmpty()) {
-				mime = URLConnection.guessContentTypeFromName(this.message.getRelativeFilePath());
-				if (mime!=null) {
-					return  mime;
-				} else {
-					return "";
-				}
-			} else {
-				return "";
-			}
-		} else {
-			return "image/webp";
-		}
-	}
 }
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
index c19dd04c7..f0cf5d8a7 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleConnectionManager.java
@@ -87,10 +87,10 @@ public class JingleConnectionManager extends AbstractConnectionManager {
 			return;
 		}
 		if (!this.primaryCandidates.containsKey(account.getJid().toBareJid())) {
-			final String proxy = account.getXmppConnection().findDiscoItemByFeature(Xmlns.BYTE_STREAMS);
+			final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Xmlns.BYTE_STREAMS);
 			if (proxy != null) {
 				IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
-				iq.setAttribute("to", proxy);
+				iq.setTo(proxy);
 				iq.query(Xmlns.BYTE_STREAMS);
 				account.getXmppConnection().sendIqPacket(iq,new OnIqPacketReceived() {
 
@@ -105,11 +105,11 @@ public class JingleConnectionManager extends AbstractConnectionManager {
 								candidate.setHost(host);
 								candidate.setPort(Integer.parseInt(port));
 								candidate.setType(JingleCandidate.TYPE_PROXY);
-								candidate.setJid(Jid.fromString(proxy));
+								candidate.setJid(proxy);
 								candidate.setPriority(655360 + 65535);
 								primaryCandidates.put(account.getJid().toBareJid(),candidate);
 								listener.onPrimaryCandidateFound(true,candidate);
-							} catch (final NumberFormatException | InvalidJidException e) {
+							} catch (final NumberFormatException e) {
 								listener.onPrimaryCandidateFound(false,null);
 								return;
 							}