Merge branch 'trz/rebase' into trz/rename

Conflicts:
	build.gradle
	src/main/java/de/thedevstack/conversationsplus/crypto/OtrEngine.java
	src/main/java/de/thedevstack/conversationsplus/entities/Account.java
	src/main/java/de/thedevstack/conversationsplus/entities/Contact.java
	src/main/java/de/thedevstack/conversationsplus/entities/Downloadable.java
	src/main/java/de/thedevstack/conversationsplus/entities/DownloadableFile.java
	src/main/java/de/thedevstack/conversationsplus/entities/DownloadablePlaceholder.java
	src/main/java/de/thedevstack/conversationsplus/entities/Message.java
	src/main/java/de/thedevstack/conversationsplus/generator/IqGenerator.java
	src/main/java/de/thedevstack/conversationsplus/http/HttpConnection.java
	src/main/java/de/thedevstack/conversationsplus/http/HttpConnectionManager.java
	src/main/java/de/thedevstack/conversationsplus/parser/AbstractParser.java
	src/main/java/de/thedevstack/conversationsplus/parser/MessageParser.java
	src/main/java/de/thedevstack/conversationsplus/parser/PresenceParser.java
	src/main/java/de/thedevstack/conversationsplus/persistance/DatabaseBackend.java
	src/main/java/de/thedevstack/conversationsplus/persistance/FileBackend.java
	src/main/java/de/thedevstack/conversationsplus/services/NotificationService.java
	src/main/java/de/thedevstack/conversationsplus/services/XmppConnectionService.java
	src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
	src/main/java/de/thedevstack/conversationsplus/ui/ConversationFragment.java
	src/main/java/de/thedevstack/conversationsplus/ui/SettingsActivity.java
	src/main/java/de/thedevstack/conversationsplus/ui/StartConversationActivity.java
	src/main/java/de/thedevstack/conversationsplus/ui/adapter/AccountAdapter.java
	src/main/java/de/thedevstack/conversationsplus/ui/adapter/ConversationAdapter.java
	src/main/java/de/thedevstack/conversationsplus/ui/adapter/ListItemAdapter.java
	src/main/java/de/thedevstack/conversationsplus/ui/adapter/MessageAdapter.java
	src/main/java/de/thedevstack/conversationsplus/utils/UIHelper.java
	src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnection.java
	src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleConnectionManager.java
	src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleInbandTransport.java
	src/main/java/de/thedevstack/conversationsplus/xmpp/jingle/JingleSocks5Transport.java
	src/main/java/de/thedevstack/conversationsplus/xmpp/stanzas/MessagePacket.java
	src/main/java/eu/siacs/conversations/crypto/OtrEngine.java
	src/main/java/eu/siacs/conversations/crypto/OtrService.java
	src/main/java/eu/siacs/conversations/entities/DownloadablePlaceholder.java
	src/main/java/eu/siacs/conversations/entities/TransferablePlaceholder.java
	src/main/java/eu/siacs/conversations/http/HttpConnection.java
	src/main/java/eu/siacs/conversations/http/HttpDownloadConnection.java
	src/main/res/layout/activity_about.xml

7 files changed, 661 insertions, 96 deletions

diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/CryptoHelper.java b/src/main/java/de/thedevstack/conversationsplus/utils/CryptoHelper.java
index 115ac190..9599aa37 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/CryptoHelper.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/CryptoHelper.java
@@ -91,6 +91,11 @@ public final class CryptoHelper {
 	}
 
 	public static String prettifyFingerprint(String fingerprint) {
+		if (fingerprint==null) {
+			return "";
+		} else if (fingerprint.length() < 40) {
+			return fingerprint;
+		}
 		StringBuilder builder = new StringBuilder(fingerprint);
 		builder.insert(8, " ");
 		builder.insert(17, " ");
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java b/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java
index 1eedfdfd..8951426f 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/DNSHelper.java
@@ -20,11 +20,19 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Random;
 import java.util.TreeMap;
+import java.util.regex.Pattern;
 
 import android.os.Bundle;
 import android.util.Log;
 
 public class DNSHelper {
+
+	public static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
+	public static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
+	public static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z");
+	public static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z");
+	public static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z");
+
 	protected static Client client = new Client();
 
 	public static Bundle getSRVRecord(final Jid jid) throws IOException {
@@ -37,9 +45,6 @@ public class DNSHelper {
 				Bundle b = queryDNS(host, ip);
 				if (b.containsKey("values")) {
 					return b;
-				} else if (b.containsKey("error")
-						&& "nosrv".equals(b.getString("error", null))) {
-					return b;
 				}
 			}
 		}
@@ -50,113 +55,96 @@ public class DNSHelper {
 		Bundle bundle = new Bundle();
 		try {
 			String qname = "_xmpp-client._tcp." + host;
-			Log.d(Config.LOGTAG,
-					"using dns server: " + dnsServer.getHostAddress()
-							+ " to look up " + host);
-			DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN,
-					dnsServer.getHostAddress());
-
-			// How should we handle priorities and weight?
-			// Wikipedia has a nice article about priorities vs. weights:
-			// https://en.wikipedia.org/wiki/SRV_record#Provisioning_for_high_service_availability
-
-			// we bucket the SRV records based on priority, pick per priority
-			// a random order respecting the weight, and dump that priority by
-			// priority
+			Log.d(Config.LOGTAG, "using dns server: " + dnsServer.getHostAddress() + " to look up " + host);
+			DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, dnsServer.getHostAddress());
 
 			TreeMap<Integer, ArrayList<SRV>> priorities = new TreeMap<>();
 			TreeMap<String, ArrayList<String>> ips4 = new TreeMap<>();
 			TreeMap<String, ArrayList<String>> ips6 = new TreeMap<>();
 
-			for (Record[] rrset : new Record[][] { message.getAnswers(),
-					message.getAdditionalResourceRecords() }) {
+			for (Record[] rrset : new Record[][] { message.getAnswers(), message.getAdditionalResourceRecords() }) {
 				for (Record rr : rrset) {
 					Data d = rr.getPayload();
-					if (d instanceof SRV
-							&& NameUtil.idnEquals(qname, rr.getName())) {
+					if (d instanceof SRV && NameUtil.idnEquals(qname, rr.getName())) {
 						SRV srv = (SRV) d;
 						if (!priorities.containsKey(srv.getPriority())) {
-							priorities.put(srv.getPriority(),
-									new ArrayList<SRV>(2));
+							priorities.put(srv.getPriority(),new ArrayList<SRV>());
 						}
 						priorities.get(srv.getPriority()).add(srv);
 					}
 					if (d instanceof A) {
-						A arecord = (A) d;
+						A a = (A) d;
 						if (!ips4.containsKey(rr.getName())) {
-							ips4.put(rr.getName(), new ArrayList<String>(3));
+							ips4.put(rr.getName(), new ArrayList<String>());
 						}
-						ips4.get(rr.getName()).add(arecord.toString());
+						ips4.get(rr.getName()).add(a.toString());
 					}
 					if (d instanceof AAAA) {
 						AAAA aaaa = (AAAA) d;
 						if (!ips6.containsKey(rr.getName())) {
-							ips6.put(rr.getName(), new ArrayList<String>(3));
+							ips6.put(rr.getName(), new ArrayList<String>());
 						}
 						ips6.get(rr.getName()).add("[" + aaaa.toString() + "]");
 					}
 				}
 			}
 
-			Random rnd = new Random();
-			ArrayList<SRV> result = new ArrayList<>(
-					priorities.size() * 2 + 1);
+			ArrayList<SRV> result = new ArrayList<>();
 			for (ArrayList<SRV> s : priorities.values()) {
-
-				// trivial case
-				if (s.size() <= 1) {
-					result.addAll(s);
-					continue;
-				}
-
-				long totalweight = 0l;
-				for (SRV srv : s) {
-					totalweight += srv.getWeight();
-				}
-
-				while (totalweight > 0l && s.size() > 0) {
-					long p = (rnd.nextLong() & 0x7fffffffffffffffl)
-							% totalweight;
-					int i = 0;
-					while (p > 0) {
-						p -= s.get(i++).getPriority();
-					}
-					i--;
-					// remove is expensive, but we have only a few entries
-					// anyway
-					SRV srv = s.remove(i);
-					totalweight -= srv.getWeight();
-					result.add(srv);
-				}
-
-				Collections.shuffle(s, rnd);
 				result.addAll(s);
-
 			}
 
+			ArrayList<Bundle> values = new ArrayList<>();
 			if (result.size() == 0) {
-				bundle.putString("error", "nosrv");
+				DNSMessage response;
+				response = client.query(host, TYPE.A, CLASS.IN, dnsServer.getHostAddress());
+				for(int i = 0; i < response.getAnswers().length; ++i) {
+					values.add(createNamePortBundle(host,5222,response.getAnswers()[i].getPayload()));
+				}
+				response = client.query(host, TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress());
+				for(int i = 0; i < response.getAnswers().length; ++i) {
+					values.add(createNamePortBundle(host,5222,response.getAnswers()[i].getPayload()));
+				}
+				values.add(createNamePortBundle(host,5222));
+				bundle.putParcelableArrayList("values", values);
 				return bundle;
 			}
-			ArrayList<Bundle> values = new ArrayList<>();
 			for (SRV srv : result) {
 				if (ips6.containsKey(srv.getName())) {
 					values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips6));
+				} else {
+					DNSMessage response = client.query(srv.getName(), TYPE.AAAA, CLASS.IN, dnsServer.getHostAddress());
+					for(int i = 0; i < response.getAnswers().length; ++i) {
+						values.add(createNamePortBundle(srv.getName(),srv.getPort(),response.getAnswers()[i].getPayload()));
+					}
 				}
 				if (ips4.containsKey(srv.getName())) {
 					values.add(createNamePortBundle(srv.getName(),srv.getPort(),ips4));
+				} else {
+					DNSMessage response = client.query(srv.getName(), TYPE.A, CLASS.IN, dnsServer.getHostAddress());
+					for(int i = 0; i < response.getAnswers().length; ++i) {
+						values.add(createNamePortBundle(srv.getName(),srv.getPort(),response.getAnswers()[i].getPayload()));
+					}
 				}
-				values.add(createNamePortBundle(srv.getName(),srv.getPort(),null));
+				values.add(createNamePortBundle(srv.getName(), srv.getPort()));
 			}
 			bundle.putParcelableArrayList("values", values);
 		} catch (SocketTimeoutException e) {
 			bundle.putString("error", "timeout");
 		} catch (Exception e) {
+			e.printStackTrace();
 			bundle.putString("error", "unhandled");
 		}
 		return bundle;
 	}
 
+	private static Bundle createNamePortBundle(String name, int port) {
+		Bundle namePort = new Bundle();
+		namePort.putString("name", name);
+		namePort.putInt("port", port);
+		return namePort;
+	}
+
 	private static Bundle createNamePortBundle(String name, int port, TreeMap<String, ArrayList<String>> ips) {
 		Bundle namePort = new Bundle();
 		namePort.putString("name", name);
@@ -169,15 +157,23 @@ public class DNSHelper {
 		return namePort;
 	}
 
-	final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();
-
-	public static String bytesToHex(byte[] bytes) {
-		char[] hexChars = new char[bytes.length * 2];
-		for (int j = 0; j < bytes.length; j++) {
-			int v = bytes[j] & 0xFF;
-			hexChars[j * 2] = hexArray[v >>> 4];
-			hexChars[j * 2 + 1] = hexArray[v & 0x0F];
+	private static Bundle createNamePortBundle(String name, int port, Data data) {
+		Bundle namePort = new Bundle();
+		namePort.putString("name", name);
+		namePort.putInt("port", port);
+		if (data instanceof A) {
+			namePort.putString("ip", data.toString());
+		} else if (data instanceof AAAA) {
+			namePort.putString("ip","["+data.toString()+"]");
 		}
-		return new String(hexChars);
+		return namePort;
+	}
+
+	public static boolean isIp(final String server) {
+		return PATTERN_IPV4.matcher(server).matches()
+				|| PATTERN_IPV6.matcher(server).matches()
+				|| PATTERN_IPV6_6HEX4DEC.matcher(server).matches()
+				|| PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches()
+				|| PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches();
 	}
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/GeoHelper.java b/src/main/java/de/thedevstack/conversationsplus/utils/GeoHelper.java
index 87c16f8c..662f797a 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/GeoHelper.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/GeoHelper.java
@@ -20,7 +20,7 @@ public class GeoHelper {
 	}
 
 	public static ArrayList<Intent> createGeoIntentsFromMessage(Message message) {
-		final ArrayList<Intent> intents = new ArrayList();
+		final ArrayList<Intent> intents = new ArrayList<>();
 		Matcher matcher = GEO_URI.matcher(message.getBody());
 		if (!matcher.matches()) {
 			return intents;
@@ -54,8 +54,14 @@ public class GeoHelper {
 		Intent locationPluginIntent = new Intent("eu.siacs.conversations.location.show");
 		locationPluginIntent.putExtra("latitude",latitude);
 		locationPluginIntent.putExtra("longitude",longitude);
-		if (conversation.getMode() == Conversation.MODE_SINGLE && message.getStatus() == Message.STATUS_RECEIVED) {
-			locationPluginIntent.putExtra("name",conversation.getName());
+		if (conversation.getMode() == Conversation.MODE_SINGLE) {
+			if (message.getStatus() == Message.STATUS_RECEIVED) {
+				locationPluginIntent.putExtra("name",conversation.getName());
+				locationPluginIntent.putExtra("jid",message.getCounterpart().toString());
+			}
+			else {
+				locationPluginIntent.putExtra("jid",conversation.getAccount().getJid().toString());
+			}
 		}
 		intents.add(locationPluginIntent);
 
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/MimeUtils.java b/src/main/java/de/thedevstack/conversationsplus/utils/MimeUtils.java
new file mode 100644
index 00000000..c1c40f92
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/MimeUtils.java
@@ -0,0 +1,487 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.thedevstack.conversationsplus.utils;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+/**
+ * Utilities for dealing with MIME types.
+ * Used to implement java.net.URLConnection and android.webkit.MimeTypeMap.
+ */
+public final class MimeUtils {
+    private static final Map<String, String> mimeTypeToExtensionMap = new HashMap<String, String>();
+    private static final Map<String, String> extensionToMimeTypeMap = new HashMap<String, String>();
+    static {
+        // The following table is based on /etc/mime.types data minus
+        // chemical/* MIME types and MIME types that don't map to any
+        // file extensions. We also exclude top-level domain names to
+        // deal with cases like:
+        //
+        // mail.google.com/a/google.com
+        //
+        // and "active" MIME types (due to potential security issues).
+        // Note that this list is _not_ in alphabetical order and must not be sorted.
+        // The "most popular" extension must come first, so that it's the one returned
+        // by guessExtensionFromMimeType.
+        add("application/andrew-inset", "ez");
+        add("application/dsptype", "tsp");
+        add("application/hta", "hta");
+        add("application/mac-binhex40", "hqx");
+        add("application/mathematica", "nb");
+        add("application/msaccess", "mdb");
+        add("application/oda", "oda");
+        add("application/ogg", "ogg");
+        add("application/ogg", "oga");
+        add("application/pdf", "pdf");
+        add("application/pgp-keys", "key");
+        add("application/pgp-signature", "pgp");
+        add("application/pics-rules", "prf");
+        add("application/pkix-cert", "cer");
+        add("application/rar", "rar");
+        add("application/rdf+xml", "rdf");
+        add("application/rss+xml", "rss");
+        add("application/zip", "zip");
+        add("application/vnd.android.package-archive", "apk");
+        add("application/vnd.cinderella", "cdy");
+        add("application/vnd.ms-pki.stl", "stl");
+        add("application/vnd.oasis.opendocument.database", "odb");
+        add("application/vnd.oasis.opendocument.formula", "odf");
+        add("application/vnd.oasis.opendocument.graphics", "odg");
+        add("application/vnd.oasis.opendocument.graphics-template", "otg");
+        add("application/vnd.oasis.opendocument.image", "odi");
+        add("application/vnd.oasis.opendocument.spreadsheet", "ods");
+        add("application/vnd.oasis.opendocument.spreadsheet-template", "ots");
+        add("application/vnd.oasis.opendocument.text", "odt");
+        add("application/vnd.oasis.opendocument.text-master", "odm");
+        add("application/vnd.oasis.opendocument.text-template", "ott");
+        add("application/vnd.oasis.opendocument.text-web", "oth");
+        add("application/vnd.google-earth.kml+xml", "kml");
+        add("application/vnd.google-earth.kmz", "kmz");
+        add("application/msword", "doc");
+        add("application/msword", "dot");
+        add("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx");
+        add("application/vnd.openxmlformats-officedocument.wordprocessingml.template", "dotx");
+        add("application/vnd.ms-excel", "xls");
+        add("application/vnd.ms-excel", "xlt");
+        add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx");
+        add("application/vnd.openxmlformats-officedocument.spreadsheetml.template", "xltx");
+        add("application/vnd.ms-powerpoint", "ppt");
+        add("application/vnd.ms-powerpoint", "pot");
+        add("application/vnd.ms-powerpoint", "pps");
+        add("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx");
+        add("application/vnd.openxmlformats-officedocument.presentationml.template", "potx");
+        add("application/vnd.openxmlformats-officedocument.presentationml.slideshow", "ppsx");
+        add("application/vnd.rim.cod", "cod");
+        add("application/vnd.smaf", "mmf");
+        add("application/vnd.stardivision.calc", "sdc");
+        add("application/vnd.stardivision.draw", "sda");
+        add("application/vnd.stardivision.impress", "sdd");
+        add("application/vnd.stardivision.impress", "sdp");
+        add("application/vnd.stardivision.math", "smf");
+        add("application/vnd.stardivision.writer", "sdw");
+        add("application/vnd.stardivision.writer", "vor");
+        add("application/vnd.stardivision.writer-global", "sgl");
+        add("application/vnd.sun.xml.calc", "sxc");
+        add("application/vnd.sun.xml.calc.template", "stc");
+        add("application/vnd.sun.xml.draw", "sxd");
+        add("application/vnd.sun.xml.draw.template", "std");
+        add("application/vnd.sun.xml.impress", "sxi");
+        add("application/vnd.sun.xml.impress.template", "sti");
+        add("application/vnd.sun.xml.math", "sxm");
+        add("application/vnd.sun.xml.writer", "sxw");
+        add("application/vnd.sun.xml.writer.global", "sxg");
+        add("application/vnd.sun.xml.writer.template", "stw");
+        add("application/vnd.visio", "vsd");
+        add("application/x-abiword", "abw");
+        add("application/x-apple-diskimage", "dmg");
+        add("application/x-bcpio", "bcpio");
+        add("application/x-bittorrent", "torrent");
+        add("application/x-cdf", "cdf");
+        add("application/x-cdlink", "vcd");
+        add("application/x-chess-pgn", "pgn");
+        add("application/x-cpio", "cpio");
+        add("application/x-debian-package", "deb");
+        add("application/x-debian-package", "udeb");
+        add("application/x-director", "dcr");
+        add("application/x-director", "dir");
+        add("application/x-director", "dxr");
+        add("application/x-dms", "dms");
+        add("application/x-doom", "wad");
+        add("application/x-dvi", "dvi");
+        add("application/x-font", "pfa");
+        add("application/x-font", "pfb");
+        add("application/x-font", "gsf");
+        add("application/x-font", "pcf");
+        add("application/x-font", "pcf.Z");
+        add("application/x-freemind", "mm");
+        // application/futuresplash isn't IANA, so application/x-futuresplash should come first.
+        add("application/x-futuresplash", "spl");
+        add("application/futuresplash", "spl");
+        add("application/x-gnumeric", "gnumeric");
+        add("application/x-go-sgf", "sgf");
+        add("application/x-graphing-calculator", "gcf");
+        add("application/x-gtar", "tgz");
+        add("application/x-gtar", "gtar");
+        add("application/x-gtar", "taz");
+        add("application/x-hdf", "hdf");
+        add("application/x-ica", "ica");
+        add("application/x-internet-signup", "ins");
+        add("application/x-internet-signup", "isp");
+        add("application/x-iphone", "iii");
+        add("application/x-iso9660-image", "iso");
+        add("application/x-jmol", "jmz");
+        add("application/x-kchart", "chrt");
+        add("application/x-killustrator", "kil");
+        add("application/x-koan", "skp");
+        add("application/x-koan", "skd");
+        add("application/x-koan", "skt");
+        add("application/x-koan", "skm");
+        add("application/x-kpresenter", "kpr");
+        add("application/x-kpresenter", "kpt");
+        add("application/x-kspread", "ksp");
+        add("application/x-kword", "kwd");
+        add("application/x-kword", "kwt");
+        add("application/x-latex", "latex");
+        add("application/x-lha", "lha");
+        add("application/x-lzh", "lzh");
+        add("application/x-lzx", "lzx");
+        add("application/x-maker", "frm");
+        add("application/x-maker", "maker");
+        add("application/x-maker", "frame");
+        add("application/x-maker", "fb");
+        add("application/x-maker", "book");
+        add("application/x-maker", "fbdoc");
+        add("application/x-mif", "mif");
+        add("application/x-ms-wmd", "wmd");
+        add("application/x-ms-wmz", "wmz");
+        add("application/x-msi", "msi");
+        add("application/x-ns-proxy-autoconfig", "pac");
+        add("application/x-nwc", "nwc");
+        add("application/x-object", "o");
+        add("application/x-oz-application", "oza");
+        add("application/x-pem-file", "pem");
+        add("application/x-pkcs12", "p12");
+        add("application/x-pkcs12", "pfx");
+        add("application/x-pkcs7-certreqresp", "p7r");
+        add("application/x-pkcs7-crl", "crl");
+        add("application/x-quicktimeplayer", "qtl");
+        add("application/x-shar", "shar");
+        add("application/x-shockwave-flash", "swf");
+        add("application/x-stuffit", "sit");
+        add("application/x-sv4cpio", "sv4cpio");
+        add("application/x-sv4crc", "sv4crc");
+        add("application/x-tar", "tar");
+        add("application/x-texinfo", "texinfo");
+        add("application/x-texinfo", "texi");
+        add("application/x-troff", "t");
+        add("application/x-troff", "roff");
+        add("application/x-troff-man", "man");
+        add("application/x-ustar", "ustar");
+        add("application/x-wais-source", "src");
+        add("application/x-wingz", "wz");
+        add("application/x-webarchive", "webarchive");
+        add("application/x-webarchive-xml", "webarchivexml");
+        add("application/x-x509-ca-cert", "crt");
+        add("application/x-x509-user-cert", "crt");
+        add("application/x-x509-server-cert", "crt");
+        add("application/x-xcf", "xcf");
+        add("application/x-xfig", "fig");
+        add("application/xhtml+xml", "xhtml");
+        add("audio/3gpp", "3gpp");
+        add("audio/aac", "aac");
+        add("audio/aac-adts", "aac");
+        add("audio/amr", "amr");
+        add("audio/amr-wb", "awb");
+        add("audio/basic", "snd");
+        add("audio/flac", "flac");
+        add("application/x-flac", "flac");
+        add("audio/imelody", "imy");
+        add("audio/midi", "mid");
+        add("audio/midi", "midi");
+        add("audio/midi", "ota");
+        add("audio/midi", "kar");
+        add("audio/midi", "rtttl");
+        add("audio/midi", "xmf");
+        add("audio/mobile-xmf", "mxmf");
+        // add ".mp3" first so it will be the default for guessExtensionFromMimeType
+        add("audio/mpeg", "mp3");
+        add("audio/mpeg", "mpga");
+        add("audio/mpeg", "mpega");
+        add("audio/mpeg", "mp2");
+        add("audio/mpeg", "m4a");
+        add("audio/mpegurl", "m3u");
+        add("audio/prs.sid", "sid");
+        add("audio/x-aiff", "aif");
+        add("audio/x-aiff", "aiff");
+        add("audio/x-aiff", "aifc");
+        add("audio/x-gsm", "gsm");
+        add("audio/x-matroska", "mka");
+        add("audio/x-mpegurl", "m3u");
+        add("audio/x-ms-wma", "wma");
+        add("audio/x-ms-wax", "wax");
+        add("audio/x-pn-realaudio", "ra");
+        add("audio/x-pn-realaudio", "rm");
+        add("audio/x-pn-realaudio", "ram");
+        add("audio/x-realaudio", "ra");
+        add("audio/x-scpls", "pls");
+        add("audio/x-sd2", "sd2");
+        add("audio/x-wav", "wav");
+        // image/bmp isn't IANA, so image/x-ms-bmp should come first.
+        add("image/x-ms-bmp", "bmp");
+        add("image/bmp", "bmp");
+        add("image/gif", "gif");
+        // image/ico isn't IANA, so image/x-icon should come first.
+        add("image/x-icon", "ico");
+        add("image/ico", "cur");
+        add("image/ico", "ico");
+        add("image/ief", "ief");
+        // add ".jpg" first so it will be the default for guessExtensionFromMimeType
+        add("image/jpeg", "jpg");
+        add("image/jpeg", "jpeg");
+        add("image/jpeg", "jpe");
+        add("image/pcx", "pcx");
+        add("image/png", "png");
+        add("image/svg+xml", "svg");
+        add("image/svg+xml", "svgz");
+        add("image/tiff", "tiff");
+        add("image/tiff", "tif");
+        add("image/vnd.djvu", "djvu");
+        add("image/vnd.djvu", "djv");
+        add("image/vnd.wap.wbmp", "wbmp");
+        add("image/webp", "webp");
+        add("image/x-cmu-raster", "ras");
+        add("image/x-coreldraw", "cdr");
+        add("image/x-coreldrawpattern", "pat");
+        add("image/x-coreldrawtemplate", "cdt");
+        add("image/x-corelphotopaint", "cpt");
+        add("image/x-jg", "art");
+        add("image/x-jng", "jng");
+        add("image/x-photoshop", "psd");
+        add("image/x-portable-anymap", "pnm");
+        add("image/x-portable-bitmap", "pbm");
+        add("image/x-portable-graymap", "pgm");
+        add("image/x-portable-pixmap", "ppm");
+        add("image/x-rgb", "rgb");
+        add("image/x-xbitmap", "xbm");
+        add("image/x-xpixmap", "xpm");
+        add("image/x-xwindowdump", "xwd");
+        add("model/iges", "igs");
+        add("model/iges", "iges");
+        add("model/mesh", "msh");
+        add("model/mesh", "mesh");
+        add("model/mesh", "silo");
+        add("text/calendar", "ics");
+        add("text/calendar", "icz");
+        add("text/comma-separated-values", "csv");
+        add("text/css", "css");
+        add("text/html", "htm");
+        add("text/html", "html");
+        add("text/h323", "323");
+        add("text/iuls", "uls");
+        add("text/mathml", "mml");
+        // add ".txt" first so it will be the default for guessExtensionFromMimeType
+        add("text/plain", "txt");
+        add("text/plain", "asc");
+        add("text/plain", "text");
+        add("text/plain", "diff");
+        add("text/plain", "po");     // reserve "pot" for vnd.ms-powerpoint
+        add("text/richtext", "rtx");
+        add("text/rtf", "rtf");
+        add("text/text", "phps");
+        add("text/tab-separated-values", "tsv");
+        add("text/xml", "xml");
+        add("text/x-bibtex", "bib");
+        add("text/x-boo", "boo");
+        add("text/x-c++hdr", "hpp");
+        add("text/x-c++hdr", "h++");
+        add("text/x-c++hdr", "hxx");
+        add("text/x-c++hdr", "hh");
+        add("text/x-c++src", "cpp");
+        add("text/x-c++src", "c++");
+        add("text/x-c++src", "cc");
+        add("text/x-c++src", "cxx");
+        add("text/x-chdr", "h");
+        add("text/x-component", "htc");
+        add("text/x-csh", "csh");
+        add("text/x-csrc", "c");
+        add("text/x-dsrc", "d");
+        add("text/x-haskell", "hs");
+        add("text/x-java", "java");
+        add("text/x-literate-haskell", "lhs");
+        add("text/x-moc", "moc");
+        add("text/x-pascal", "p");
+        add("text/x-pascal", "pas");
+        add("text/x-pcs-gcd", "gcd");
+        add("text/x-setext", "etx");
+        add("text/x-tcl", "tcl");
+        add("text/x-tex", "tex");
+        add("text/x-tex", "ltx");
+        add("text/x-tex", "sty");
+        add("text/x-tex", "cls");
+        add("text/x-vcalendar", "vcs");
+        add("text/x-vcard", "vcf");
+        add("video/3gpp", "3gpp");
+        add("video/3gpp", "3gp");
+        add("video/3gpp2", "3gpp2");
+        add("video/3gpp2", "3g2");
+        add("video/avi", "avi");
+        add("video/dl", "dl");
+        add("video/dv", "dif");
+        add("video/dv", "dv");
+        add("video/fli", "fli");
+        add("video/m4v", "m4v");
+        add("video/mp2ts", "ts");
+        add("video/mpeg", "mpeg");
+        add("video/mpeg", "mpg");
+        add("video/mpeg", "mpe");
+        add("video/mp4", "mp4");
+        add("video/mpeg", "VOB");
+        add("video/quicktime", "qt");
+        add("video/quicktime", "mov");
+        add("video/vnd.mpegurl", "mxu");
+        add("video/webm", "webm");
+        add("video/x-la-asf", "lsf");
+        add("video/x-la-asf", "lsx");
+        add("video/x-matroska", "mkv");
+        add("video/x-mng", "mng");
+        add("video/x-ms-asf", "asf");
+        add("video/x-ms-asf", "asx");
+        add("video/x-ms-wm", "wm");
+        add("video/x-ms-wmv", "wmv");
+        add("video/x-ms-wmx", "wmx");
+        add("video/x-ms-wvx", "wvx");
+        add("video/x-sgi-movie", "movie");
+        add("video/x-webex", "wrf");
+        add("x-conference/x-cooltalk", "ice");
+        add("x-epoc/x-sisx-app", "sisx");
+        applyOverrides();
+    }
+    private static void add(String mimeType, String extension) {
+        // If we have an existing x -> y mapping, we do not want to
+        // override it with another mapping x -> y2.
+        // If a mime type maps to several extensions
+        // the first extension added is considered the most popular
+        // so we do not want to overwrite it later.
+        if (!mimeTypeToExtensionMap.containsKey(mimeType)) {
+            mimeTypeToExtensionMap.put(mimeType, extension);
+        }
+        if (!extensionToMimeTypeMap.containsKey(extension)) {
+            extensionToMimeTypeMap.put(extension, mimeType);
+        }
+    }
+    private static InputStream getContentTypesPropertiesStream() {
+        // User override?
+        String userTable = System.getProperty("content.types.user.table");
+        if (userTable != null) {
+            File f = new File(userTable);
+            if (f.exists()) {
+                try {
+                    return new FileInputStream(f);
+                } catch (IOException ignored) {
+                }
+            }
+        }
+        // Standard location?
+        File f = new File(System.getProperty("java.home"), "lib" + File.separator + "content-types.properties");
+        if (f.exists()) {
+            try {
+                return new FileInputStream(f);
+            } catch (IOException ignored) {
+            }
+        }
+        return null;
+    }
+    /**
+     * This isn't what the RI does. The RI doesn't have hard-coded defaults, so supplying your
+     * own "content.types.user.table" means you don't get any of the built-ins, and the built-ins
+     * come from "$JAVA_HOME/lib/content-types.properties".
+     */
+    private static void applyOverrides() {
+        // Get the appropriate InputStream to read overrides from, if any.
+        InputStream stream = getContentTypesPropertiesStream();
+        if (stream == null) {
+            return;
+        }
+        try {
+            try {
+                // Read the properties file...
+                Properties overrides = new Properties();
+                overrides.load(stream);
+                // And translate its mapping to ours...
+                for (Map.Entry<Object, Object> entry : overrides.entrySet()) {
+                    String extension = (String) entry.getKey();
+                    String mimeType = (String) entry.getValue();
+                    add(mimeType, extension);
+                }
+            } finally {
+                stream.close();
+            }
+        } catch (IOException ignored) {
+        }
+    }
+    private MimeUtils() {
+    }
+    /**
+     * Returns true if the given MIME type has an entry in the map.
+     * @param mimeType A MIME type (i.e. text/plain)
+     * @return True iff there is a mimeType entry in the map.
+     */
+    public static boolean hasMimeType(String mimeType) {
+        if (mimeType == null || mimeType.isEmpty()) {
+            return false;
+        }
+        return mimeTypeToExtensionMap.containsKey(mimeType);
+    }
+    /**
+     * Returns the MIME type for the given extension.
+     * @param extension A file extension without the leading '.'
+     * @return The MIME type for the given extension or null iff there is none.
+     */
+    public static String guessMimeTypeFromExtension(String extension) {
+        if (extension == null || extension.isEmpty()) {
+            return null;
+        }
+        return extensionToMimeTypeMap.get(extension);
+    }
+    /**
+     * Returns true if the given extension has a registered MIME type.
+     * @param extension A file extension without the leading '.'
+     * @return True iff there is an extension entry in the map.
+     */
+    public static boolean hasExtension(String extension) {
+        if (extension == null || extension.isEmpty()) {
+            return false;
+        }
+        return extensionToMimeTypeMap.containsKey(extension);
+    }
+    /**
+     * Returns the registered extension for the given MIME type. Note that some
+     * MIME types map to multiple extensions. This call will return the most
+     * common extension for the given MIME type.
+     * @param mimeType A MIME type (i.e. text/plain)
+     * @return The extension for the given MIME type or null iff there is none.
+     */
+    public static String guessExtensionFromMimeType(String mimeType) {
+        if (mimeType == null || mimeType.isEmpty()) {
+            return null;
+        }
+        return mimeTypeToExtensionMap.get(mimeType);
+    }
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java b/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java
new file mode 100644
index 00000000..264645c6
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/SerialSingleThreadExecutor.java
@@ -0,0 +1,34 @@
+package de.thedevstack.conversationsplus.utils;
+
+import java.util.ArrayDeque;
+import java.util.Queue;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+public class SerialSingleThreadExecutor implements Executor {
+
+	final Executor executor = Executors.newSingleThreadExecutor();
+	final Queue<Runnable> tasks = new ArrayDeque();
+	Runnable active;
+
+	public synchronized void execute(final Runnable r) {
+		tasks.offer(new Runnable() {
+			public void run() {
+				try {
+					r.run();
+				} finally {
+					scheduleNext();
+				}
+			}
+		});
+		if (active == null) {
+			scheduleNext();
+		}
+	}
+
+	protected synchronized void scheduleNext() {
+		if ((active =  tasks.poll()) != null) {
+			executor.execute(active);
+		}
+	}
+}
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/UIHelper.java b/src/main/java/de/thedevstack/conversationsplus/utils/UIHelper.java
index 3edaad0d..0e7833e4 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/UIHelper.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/UIHelper.java
@@ -1,5 +1,7 @@
 package de.thedevstack.conversationsplus.utils;
 
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.net.URLConnection;
 import java.util.Calendar;
 import java.util.Date;
@@ -13,9 +15,9 @@ import de.thedevstack.conversationsplus.Config;
 import de.thedevstack.conversationsplus.R;
 import de.thedevstack.conversationsplus.entities.Contact;
 import de.thedevstack.conversationsplus.entities.Conversation;
-import de.thedevstack.conversationsplus.entities.Downloadable;
-import de.thedevstack.conversationsplus.entities.Message;
 import de.thedevstack.conversationsplus.entities.Presences;
+import de.thedevstack.conversationsplus.entities.Transferable;
+import de.thedevstack.conversationsplus.entities.Message;
 import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 
 import android.content.Context;
@@ -27,6 +29,33 @@ import android.text.Spannable;
 import android.util.Pair;
 
 public class UIHelper {
+
+	private static String BLACK_HEART_SUIT = "\u2665";
+	private static String HEAVY_BLACK_HEART_SUIT = "\u2764";
+	private static String WHITE_HEART_SUIT = "\u2661";
+
+	public static final ArrayList<String> HEARTS = new ArrayList<>(Arrays.asList(BLACK_HEART_SUIT,HEAVY_BLACK_HEART_SUIT,WHITE_HEART_SUIT));
+
+	private static final ArrayList<String> LOCATION_QUESTIONS = new ArrayList<>(Arrays.asList(
+			"where are you", //en
+			"where are you now", //en
+			"where are you right now", //en
+			"whats your 20", //en
+			"what is your 20", //en
+			"what's your 20", //en
+			"whats your twenty", //en
+			"what is your twenty", //en
+			"what's your twenty", //en
+			"wo bist du", //de
+			"wo bist du jetzt", //de
+			"wo bist du gerade", //de
+			"wo seid ihr", //de
+			"wo seid ihr jetzt", //de
+			"wo seid ihr gerade", //de
+			"dónde estás", //es
+			"donde estas" //es
+		));
+
 	private static final int SHORT_DATE_FLAGS = DateUtils.FORMAT_SHOW_DATE
 		| DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL;
 	private static final int FULL_DATE_FLAGS = DateUtils.FORMAT_SHOW_TIME
@@ -251,24 +280,25 @@ public class UIHelper {
 	}
 
 	public static Pair<String,Boolean> getMessagePreview(final Context context, final Message message) {
-		final Downloadable d = message.getDownloadable();
+		final Transferable d = message.getTransferable();
 		if (d != null ) {
 			switch (d.getStatus()) {
-				case Downloadable.STATUS_CHECKING:
-					return new Pair<>(context.getString(R.string.checking_image),true);
-				case Downloadable.STATUS_DOWNLOADING:
+				case Transferable.STATUS_CHECKING:
+					return new Pair<>(context.getString(R.string.checking_x,
+									getFileDescriptionString(context,message)),true);
+				case Transferable.STATUS_DOWNLOADING:
 					return new Pair<>(context.getString(R.string.receiving_x_file,
 									getFileDescriptionString(context,message),
 									d.getProgress()),true);
-				case Downloadable.STATUS_OFFER:
-				case Downloadable.STATUS_OFFER_CHECK_FILESIZE:
+				case Transferable.STATUS_OFFER:
+				case Transferable.STATUS_OFFER_CHECK_FILESIZE:
 					return new Pair<>(context.getString(R.string.x_file_offered_for_download,
 									getFileDescriptionString(context,message)),true);
-				case Downloadable.STATUS_DELETED:
+				case Transferable.STATUS_DELETED:
 					return new Pair<>(context.getString(R.string.file_deleted),true);
-				case Downloadable.STATUS_FAILED:
+				case Transferable.STATUS_FAILED:
 					return new Pair<>(context.getString(R.string.file_transmission_failed),true);
-				case Downloadable.STATUS_UPLOADING:
+				case Transferable.STATUS_UPLOADING:
 					if (message.getStatus() == Message.STATUS_OFFERED) {
 						return new Pair<>(context.getString(R.string.offering_x_file,
 								getFileDescriptionString(context, message)), true);
@@ -308,16 +338,7 @@ public class UIHelper {
 		if (message.getType() == Message.TYPE_IMAGE) {
 			return context.getString(R.string.image);
 		}
-		final String path = message.getRelativeFilePath();
-		if (path == null) {
-			return "";
-		}
-		final String mime;
-		try {
-			mime = URLConnection.guessContentTypeFromName(path.replace("#",""));
-		} catch (final StringIndexOutOfBoundsException ignored) {
-			return context.getString(R.string.file);
-		}
+		final String mime = message.getMimeType();
 		if (mime == null) {
 			return context.getString(R.string.file);
 		} else if (mime.startsWith("audio/")) {
@@ -339,10 +360,14 @@ public class UIHelper {
 
 	public static String getMessageDisplayName(final Message message) {
 		if (message.getStatus() == Message.STATUS_RECEIVED) {
+			final Contact contact = message.getContact();
 			if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
-				return getDisplayedMucCounterpart(message.getCounterpart());
+				if (contact != null) {
+					return contact.getDisplayName();
+				} else {
+					return getDisplayedMucCounterpart(message.getCounterpart());
+				}
 			} else {
-				final Contact contact = message.getContact();
 				return contact != null ? contact.getDisplayName() : "";
 			}
 		} else {
@@ -378,4 +403,15 @@ public class UIHelper {
 			return counterpart.toString().trim();
 		}
 	}
+
+	public static boolean receivedLocationQuestion(Message message) {
+		if (message == null
+				|| message.getStatus() != Message.STATUS_RECEIVED
+				|| message.getType() != Message.TYPE_TEXT) {
+			return false;
+		}
+		String body = message.getBody() == null ? null : message.getBody().trim().toLowerCase(Locale.getDefault());
+		body = body.replace("?","").replace("¿","");
+		return LOCATION_QUESTIONS.contains(body);
+	}
 }
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/Xmlns.java b/src/main/java/de/thedevstack/conversationsplus/utils/Xmlns.java
index 80718dec..6e3cc912 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/Xmlns.java
+++ b/src/main/java/de/thedevstack/conversationsplus/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 = "de:thedevstack:conversationsplus:http:upload";
 }