Use Gradle build system

.gitignore

@@ -0,0 +1,41 @@
+.classpath
+*.swp
+.settings
+
+# https://github.com/github/gitignore/blob/master/Gradle.gitignore
+.gradle/
+gradle/
+build/
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# https://github.com/github/gitignore/blob/master/Android.gitignore
+# Built application files
+*.apk
+*.ap_
+
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+*.iml
+.idea
+
+import-summary.txt
+
+*.jar

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "minidns"]
+	path = minidns
+	url = https://github.com/rtreffer/minidns.git
+[submodule "openpgpapilib"]
+	path = openpgpapilib
+	url = https://github.com/open-keychain/openpgp-api-lib.git
+[submodule "memorizingTrustManager"]
+	path = memorizingTrustManager
+	url = https://github.com/iNPUTmice/MemorizingTrustManager.git

build.gradle

@@ -0,0 +1,16 @@
+// Top-level build file where you can add configuration options common to all
+// sub-projects/modules.
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.12.2'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}

conversations/build.gradle

@@ -0,0 +1,28 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "20.0.0"
+
+    defaultConfig {
+        applicationId "eu.siacs.conversations"
+        minSdkVersion 14
+        targetSdkVersion 19
+    }
+
+    buildTypes {
+        release {
+            runProguard false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+}
+
+dependencies {
+    compile project(':minidns')
+    compile project(':openpgpapilib')
+    compile project(':memorizingTrustManager')
+    compile files('libs/android-support-v13.jar')
+    compile files('libs/bcprov-jdk15on-150.jar')
+    compile files('libs/otr4j-0.10.jar')
+}

conversations/src/main/AndroidManifest.xml

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="eu.siacs.conversations"
+    android:versionCode="32"
+    android:versionName="0.8-alpha" >
+
+    <uses-sdk
+        android:minSdkVersion="14"
+        android:targetSdkVersion="19" />
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.READ_PROFILE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        tools:replace="android:label"
+        android:theme="@style/ConversationsTheme" >
+        <service android:name="eu.siacs.conversations.services.XmppConnectionService" />
+
+        <receiver android:name="eu.siacs.conversations.services.EventReceiver" >
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
+                <action android:name="android.intent.action.ACTION_SHUTDOWN" />
+            </intent-filter>
+        </receiver>
+
+        <activity
+            android:name="eu.siacs.conversations.ui.ConversationActivity"
+            android:label="@string/title_activity_conversations"
+            android:launchMode="singleTask"
+            android:windowSoftInputMode="stateHidden" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.StartConversationActivity"
+            android:configChanges="orientation|screenSize"
+            android:label="@string/title_activity_start_conversation"
+            android:logo="@drawable/ic_activity" >
+            <intent-filter>
+                <action android:name="android.intent.action.SENDTO" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+
+                <data android:scheme="imto" />
+                <data android:host="jabber" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data android:scheme="xmpp" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.SettingsActivity"
+            android:label="@string/title_activity_settings" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.ChooseContactActivity"
+            android:label="@string/title_activity_choose_contact" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.ManageAccountActivity"
+            android:configChanges="orientation|screenSize"
+            android:label="@string/title_activity_manage_accounts" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.EditAccountActivity"
+            android:windowSoftInputMode="stateHidden|adjustResize" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.ConferenceDetailsActivity"
+            android:label="@string/title_activity_conference_details"
+            android:windowSoftInputMode="stateHidden" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.ContactDetailsActivity"
+            android:label="@string/title_activity_contact_details"
+            android:windowSoftInputMode="stateHidden" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.PublishProfilePictureActivity"
+            android:label="@string/mgmt_account_publish_avatar"
+            android:windowSoftInputMode="stateHidden" >
+        </activity>
+        <activity
+            android:name="eu.siacs.conversations.ui.ShareWithActivity"
+            android:label="@string/title_activity_conversations" >
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+
+                <data android:mimeType="text/plain" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+
+                <data android:mimeType="image/*" />
+            </intent-filter>
+        </activity>
+        <activity android:name="de.duenndns.ssl.MemorizingActivity" />
+    </application>
+
+</manifest>

conversations/src/main/java/eu/siacs/conversations/Config.java

@@ -0,0 +1,25 @@
+package eu.siacs.conversations;
+
+import android.graphics.Bitmap;
+
+public final class Config {
+
+	public static final String LOGTAG = "conversations";
+
+	public static final int PING_MAX_INTERVAL = 300;
+	public static final int PING_MIN_INTERVAL = 30;
+	public static final int PING_TIMEOUT = 10;
+	public static final int CONNECT_TIMEOUT = 90;
+	public static final int CARBON_GRACE_PERIOD = 60;
+
+	public static final int AVATAR_SIZE = 192;
+	public static final Bitmap.CompressFormat AVATAR_FORMAT = Bitmap.CompressFormat.WEBP;
+
+	public static final int MESSAGE_MERGE_WINDOW = 20;
+
+	public static final boolean PARSE_EMOTICONS = false;
+
+	private Config() {
+
+	}
+}

conversations/src/main/java/eu/siacs/conversations/crypto/OtrEngine.java

@@ -0,0 +1,231 @@
+package eu.siacs.conversations.crypto;
+
+import java.math.BigInteger;
+import java.security.KeyFactory;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.spec.DSAPrivateKeySpec;
+import java.security.spec.DSAPublicKeySpec;
+import java.security.spec.InvalidKeySpecException;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import android.util.Log;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
+
+import net.java.otr4j.OtrEngineHost;
+import net.java.otr4j.OtrException;
+import net.java.otr4j.OtrPolicy;
+import net.java.otr4j.OtrPolicyImpl;
+import net.java.otr4j.session.InstanceTag;
+import net.java.otr4j.session.SessionID;
+
+public class OtrEngine implements OtrEngineHost {
+
+	private Account account;
+	private OtrPolicy otrPolicy;
+	private KeyPair keyPair;
+	private XmppConnectionService mXmppConnectionService;
+
+	public OtrEngine(XmppConnectionService service, Account account) {
+		this.account = account;
+		this.otrPolicy = new OtrPolicyImpl();
+		this.otrPolicy.setAllowV1(false);
+		this.otrPolicy.setAllowV2(true);
+		this.otrPolicy.setAllowV3(true);
+		this.keyPair = loadKey(account.getKeys());
+		this.mXmppConnectionService = service;
+	}
+
+	private KeyPair loadKey(JSONObject keys) {
+		if (keys == null) {
+			return null;
+		}
+		try {
+			BigInteger x = new BigInteger(keys.getString("otr_x"), 16);
+			BigInteger y = new BigInteger(keys.getString("otr_y"), 16);
+			BigInteger p = new BigInteger(keys.getString("otr_p"), 16);
+			BigInteger q = new BigInteger(keys.getString("otr_q"), 16);
+			BigInteger g = new BigInteger(keys.getString("otr_g"), 16);
+			KeyFactory keyFactory = KeyFactory.getInstance("DSA");
+			DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, p, q, g);
+			DSAPrivateKeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
+			PublicKey publicKey = keyFactory.generatePublic(pubKeySpec);
+			PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);
+			return new KeyPair(publicKey, privateKey);
+		} catch (JSONException e) {
+			return null;
+		} catch (NoSuchAlgorithmException e) {
+			return null;
+		} catch (InvalidKeySpecException e) {
+			return null;
+		}
+	}
+
+	private void saveKey() {
+		PublicKey publicKey = keyPair.getPublic();
+		PrivateKey privateKey = keyPair.getPrivate();
+		KeyFactory keyFactory;
+		try {
+			keyFactory = KeyFactory.getInstance("DSA");
+			DSAPrivateKeySpec privateKeySpec = keyFactory.getKeySpec(
+					privateKey, DSAPrivateKeySpec.class);
+			DSAPublicKeySpec publicKeySpec = keyFactory.getKeySpec(publicKey,
+					DSAPublicKeySpec.class);
+			this.account.setKey("otr_x", privateKeySpec.getX().toString(16));
+			this.account.setKey("otr_g", privateKeySpec.getG().toString(16));
+			this.account.setKey("otr_p", privateKeySpec.getP().toString(16));
+			this.account.setKey("otr_q", privateKeySpec.getQ().toString(16));
+			this.account.setKey("otr_y", publicKeySpec.getY().toString(16));
+		} catch (NoSuchAlgorithmException e) {
+			e.printStackTrace();
+		} catch (InvalidKeySpecException e) {
+			e.printStackTrace();
+		}
+
+	}
+
+	@Override
+	public void askForSecret(SessionID arg0, InstanceTag arg1, String arg2) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void finishedSessionMessage(SessionID arg0, String arg1)
+			throws OtrException {
+
+	}
+
+	@Override
+	public String getFallbackMessage(SessionID arg0) {
+		return "I would like to start a private (OTR encrypted) conversation but your client doesn’t seem to support that";
+	}
+
+	@Override
+	public byte[] getLocalFingerprintRaw(SessionID arg0) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	public PublicKey getPublicKey() {
+		if (this.keyPair == null) {
+			return null;
+		}
+		return this.keyPair.getPublic();
+	}
+
+	@Override
+	public KeyPair getLocalKeyPair(SessionID arg0) throws OtrException {
+		if (this.keyPair == null) {
+			KeyPairGenerator kg;
+			try {
+				kg = KeyPairGenerator.getInstance("DSA");
+				this.keyPair = kg.genKeyPair();
+				this.saveKey();
+				mXmppConnectionService.databaseBackend.updateAccount(account);
+			} catch (NoSuchAlgorithmException e) {
+				Log.d(Config.LOGTAG,
+						"error generating key pair " + e.getMessage());
+			}
+		}
+		return this.keyPair;
+	}
+
+	@Override
+	public String getReplyForUnreadableMessage(SessionID arg0) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public OtrPolicy getSessionPolicy(SessionID arg0) {
+		return otrPolicy;
+	}
+
+	@Override
+	public void injectMessage(SessionID session, String body)
+			throws OtrException {
+		MessagePacket packet = new MessagePacket();
+		packet.setFrom(account.getFullJid());
+		if (session.getUserID().isEmpty()) {
+			packet.setTo(session.getAccountID());
+		} else {
+			packet.setTo(session.getAccountID() + "/" + session.getUserID());
+		}
+		packet.setBody(body);
+		packet.addChild("private", "urn:xmpp:carbons:2");
+		packet.addChild("no-copy", "urn:xmpp:hints");
+		packet.setType(MessagePacket.TYPE_CHAT);
+		account.getXmppConnection().sendMessagePacket(packet);
+	}
+
+	@Override
+	public void messageFromAnotherInstanceReceived(SessionID id) {
+		Log.d(Config.LOGTAG,
+				"unreadable message received from " + id.getAccountID());
+	}
+
+	@Override
+	public void multipleInstancesDetected(SessionID arg0) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void requireEncryptedMessage(SessionID arg0, String arg1)
+			throws OtrException {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void showError(SessionID arg0, String arg1) throws OtrException {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void smpAborted(SessionID arg0) throws OtrException {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void smpError(SessionID arg0, int arg1, boolean arg2)
+			throws OtrException {
+		throw new OtrException(new Exception("smp error"));
+	}
+
+	@Override
+	public void unencryptedMessageReceived(SessionID arg0, String arg1)
+			throws OtrException {
+		throw new OtrException(new Exception("unencrypted message received"));
+	}
+
+	@Override
+	public void unreadableMessageReceived(SessionID arg0) throws OtrException {
+		throw new OtrException(new Exception("unreadable message received"));
+	}
+
+	@Override
+	public void unverify(SessionID arg0, String arg1) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public void verify(SessionID arg0, String arg1, boolean arg2) {
+		// TODO Auto-generated method stub
+
+	}
+
+}

conversations/src/main/java/eu/siacs/conversations/crypto/PgpEngine.java

@@ -0,0 +1,385 @@
+package eu.siacs.conversations.crypto;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import org.openintents.openpgp.OpenPgpError;
+import org.openintents.openpgp.OpenPgpSignatureResult;
+import org.openintents.openpgp.util.OpenPgpApi;
+import org.openintents.openpgp.util.OpenPgpApi.IOpenPgpCallback;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.R;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.entities.DownloadableFile;
+import eu.siacs.conversations.entities.Message;
+import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.ui.UiCallback;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.graphics.BitmapFactory;
+import android.util.Log;
+
+public class PgpEngine {
+	private OpenPgpApi api;
+	private XmppConnectionService mXmppConnectionService;
+
+	public PgpEngine(OpenPgpApi api, XmppConnectionService service) {
+		this.api = api;
+		this.mXmppConnectionService = service;
+	}
+
+	public void decrypt(final Message message,
+			final UiCallback<Message> callback) {
+		Log.d(Config.LOGTAG, "decrypting message " + message.getUuid());
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_DECRYPT_VERIFY);
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, message
+				.getConversation().getAccount().getJid());
+		if (message.getType() == Message.TYPE_TEXT) {
+			InputStream is = new ByteArrayInputStream(message.getBody()
+					.getBytes());
+			final OutputStream os = new ByteArrayOutputStream();
+			api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
+
+				@Override
+				public void onReturn(Intent result) {
+					switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
+							OpenPgpApi.RESULT_CODE_ERROR)) {
+					case OpenPgpApi.RESULT_CODE_SUCCESS:
+						try {
+							os.flush();
+							if (message.getEncryption() == Message.ENCRYPTION_PGP) {
+								message.setBody(os.toString());
+								message.setEncryption(Message.ENCRYPTION_DECRYPTED);
+								callback.success(message);
+							}
+						} catch (IOException e) {
+							callback.error(R.string.openpgp_error, message);
+							return;
+						}
+
+						return;
+					case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+						callback.userInputRequried((PendingIntent) result
+								.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+								message);
+						return;
+					case OpenPgpApi.RESULT_CODE_ERROR:
+						OpenPgpError error = result
+								.getParcelableExtra(OpenPgpApi.RESULT_ERROR);
+						Log.d(Config.LOGTAG,
+								"openpgp error: " + error.getMessage());
+						callback.error(R.string.openpgp_error, message);
+						return;
+					default:
+						return;
+					}
+				}
+			});
+		} else if (message.getType() == Message.TYPE_IMAGE) {
+			try {
+				final DownloadableFile inputFile = this.mXmppConnectionService
+						.getFileBackend().getFile(message, false);
+				final DownloadableFile outputFile = this.mXmppConnectionService
+						.getFileBackend().getFile(message, true);
+				outputFile.createNewFile();
+				InputStream is = new FileInputStream(inputFile);
+				OutputStream os = new FileOutputStream(outputFile);
+				api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
+
+					@Override
+					public void onReturn(Intent result) {
+						switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
+								OpenPgpApi.RESULT_CODE_ERROR)) {
+						case OpenPgpApi.RESULT_CODE_SUCCESS:
+							BitmapFactory.Options options = new BitmapFactory.Options();
+							options.inJustDecodeBounds = true;
+							BitmapFactory.decodeFile(
+									outputFile.getAbsolutePath(), options);
+							int imageHeight = options.outHeight;
+							int imageWidth = options.outWidth;
+							message.setBody(Long.toString(outputFile.getSize())
+									+ ',' + imageWidth + ',' + imageHeight);
+							message.setEncryption(Message.ENCRYPTION_DECRYPTED);
+							PgpEngine.this.mXmppConnectionService
+									.updateMessage(message);
+							;
+							callback.success(message);
+							return;
+						case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+							callback.userInputRequried(
+									(PendingIntent) result
+											.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+									message);
+							return;
+						case OpenPgpApi.RESULT_CODE_ERROR:
+							callback.error(R.string.openpgp_error, message);
+							return;
+						default:
+							return;
+						}
+					}
+				});
+			} catch (FileNotFoundException e) {
+				callback.error(R.string.error_decrypting_file, message);
+			} catch (IOException e) {
+				callback.error(R.string.error_decrypting_file, message);
+			}
+
+		}
+	}
+
+	public void encrypt(final Message message,
+			final UiCallback<Message> callback) {
+
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_ENCRYPT);
+		if (message.getConversation().getMode() == Conversation.MODE_SINGLE) {
+			long[] keys = { message.getConversation().getContact()
+					.getPgpKeyId() };
+			params.putExtra(OpenPgpApi.EXTRA_KEY_IDS, keys);
+		} else {
+			params.putExtra(OpenPgpApi.EXTRA_KEY_IDS, message.getConversation()
+					.getMucOptions().getPgpKeyIds());
+		}
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, message
+				.getConversation().getAccount().getJid());
+
+		if (message.getType() == Message.TYPE_TEXT) {
+			params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
+
+			InputStream is = new ByteArrayInputStream(message.getBody()
+					.getBytes());
+			final OutputStream os = new ByteArrayOutputStream();
+			api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
+
+				@Override
+				public void onReturn(Intent result) {
+					switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
+							OpenPgpApi.RESULT_CODE_ERROR)) {
+					case OpenPgpApi.RESULT_CODE_SUCCESS:
+						try {
+							os.flush();
+							StringBuilder encryptedMessageBody = new StringBuilder();
+							String[] lines = os.toString().split("\n");
+							for (int i = 2; i < lines.length - 1; ++i) {
+								if (!lines[i].contains("Version")) {
+									encryptedMessageBody.append(lines[i].trim());
+								}
+							}
+							message.setEncryptedBody(encryptedMessageBody
+									.toString());
+							callback.success(message);
+						} catch (IOException e) {
+							callback.error(R.string.openpgp_error, message);
+						}
+
+						break;
+					case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+						callback.userInputRequried((PendingIntent) result
+								.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+								message);
+						break;
+					case OpenPgpApi.RESULT_CODE_ERROR:
+						callback.error(R.string.openpgp_error, message);
+						break;
+					}
+				}
+			});
+		} else if (message.getType() == Message.TYPE_IMAGE) {
+			try {
+				DownloadableFile inputFile = this.mXmppConnectionService
+						.getFileBackend().getFile(message, true);
+				DownloadableFile outputFile = this.mXmppConnectionService
+						.getFileBackend().getFile(message, false);
+				outputFile.createNewFile();
+				InputStream is = new FileInputStream(inputFile);
+				OutputStream os = new FileOutputStream(outputFile);
+				api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
+
+					@Override
+					public void onReturn(Intent result) {
+						switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
+								OpenPgpApi.RESULT_CODE_ERROR)) {
+						case OpenPgpApi.RESULT_CODE_SUCCESS:
+							callback.success(message);
+							break;
+						case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+							callback.userInputRequried(
+									(PendingIntent) result
+											.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+									message);
+							break;
+						case OpenPgpApi.RESULT_CODE_ERROR:
+							callback.error(R.string.openpgp_error, message);
+							break;
+						}
+					}
+				});
+			} catch (FileNotFoundException e) {
+				Log.d(Config.LOGTAG, "file not found: " + e.getMessage());
+			} catch (IOException e) {
+				Log.d(Config.LOGTAG, "io exception during file encrypt");
+			}
+		}
+	}
+
+	public long fetchKeyId(Account account, String status, String signature) {
+		if ((signature == null) || (api == null)) {
+			return 0;
+		}
+		if (status == null) {
+			status = "";
+		}
+		StringBuilder pgpSig = new StringBuilder();
+		pgpSig.append("-----BEGIN PGP SIGNED MESSAGE-----");
+		pgpSig.append('\n');
+		pgpSig.append('\n');
+		pgpSig.append(status);
+		pgpSig.append('\n');
+		pgpSig.append("-----BEGIN PGP SIGNATURE-----");
+		pgpSig.append('\n');
+		pgpSig.append('\n');
+		pgpSig.append(signature.replace("\n", "").trim());
+		pgpSig.append('\n');
+		pgpSig.append("-----END PGP SIGNATURE-----");
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_DECRYPT_VERIFY);
+		params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, account.getJid());
+		InputStream is = new ByteArrayInputStream(pgpSig.toString().getBytes());
+		ByteArrayOutputStream os = new ByteArrayOutputStream();
+		Intent result = api.executeApi(params, is, os);
+		switch (result.getIntExtra(OpenPgpApi.RESULT_CODE,
+				OpenPgpApi.RESULT_CODE_ERROR)) {
+		case OpenPgpApi.RESULT_CODE_SUCCESS:
+			OpenPgpSignatureResult sigResult = result
+					.getParcelableExtra(OpenPgpApi.RESULT_SIGNATURE);
+			if (sigResult != null) {
+				return sigResult.getKeyId();
+			} else {
+				return 0;
+			}
+		case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+			return 0;
+		case OpenPgpApi.RESULT_CODE_ERROR:
+			Log.d(Config.LOGTAG,
+					"openpgp error: "
+							+ ((OpenPgpError) result
+									.getParcelableExtra(OpenPgpApi.RESULT_ERROR))
+									.getMessage());
+			return 0;
+		}
+		return 0;
+	}
+
+	public void generateSignature(final Account account, String status,
+			final UiCallback<Account> callback) {
+		Intent params = new Intent();
+		params.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
+		params.setAction(OpenPgpApi.ACTION_SIGN);
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, account.getJid());
+		InputStream is = new ByteArrayInputStream(status.getBytes());
+		final OutputStream os = new ByteArrayOutputStream();
+		api.executeApiAsync(params, is, os, new IOpenPgpCallback() {
+
+			@Override
+			public void onReturn(Intent result) {
+				switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, 0)) {
+				case OpenPgpApi.RESULT_CODE_SUCCESS:
+					StringBuilder signatureBuilder = new StringBuilder();
+					try {
+						os.flush();
+						String[] lines = os.toString().split("\n");
+						boolean sig = false;
+						for (String line : lines) {
+							if (sig) {
+								if (line.contains("END PGP SIGNATURE")) {
+									sig = false;
+								} else {
+									if (!line.contains("Version")) {
+										signatureBuilder.append(line.trim());
+									}
+								}
+							}
+							if (line.contains("BEGIN PGP SIGNATURE")) {
+								sig = true;
+							}
+						}
+					} catch (IOException e) {
+						callback.error(R.string.openpgp_error, account);
+						return;
+					}
+					account.setKey("pgp_signature", signatureBuilder.toString());
+					callback.success(account);
+					return;
+				case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+					callback.userInputRequried((PendingIntent) result
+							.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+							account);
+					return;
+				case OpenPgpApi.RESULT_CODE_ERROR:
+					callback.error(R.string.openpgp_error, account);
+					return;
+				}
+			}
+		});
+	}
+
+	public void hasKey(final Contact contact, final UiCallback<Contact> callback) {
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_GET_KEY);
+		params.putExtra(OpenPgpApi.EXTRA_KEY_ID, contact.getPgpKeyId());
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, contact.getAccount()
+				.getJid());
+		api.executeApiAsync(params, null, null, new IOpenPgpCallback() {
+
+			@Override
+			public void onReturn(Intent result) {
+				switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, 0)) {
+				case OpenPgpApi.RESULT_CODE_SUCCESS:
+					callback.success(contact);
+					return;
+				case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
+					callback.userInputRequried((PendingIntent) result
+							.getParcelableExtra(OpenPgpApi.RESULT_INTENT),
+							contact);
+					return;
+				case OpenPgpApi.RESULT_CODE_ERROR:
+					callback.error(R.string.openpgp_error, contact);
+					return;
+				}
+			}
+		});
+	}
+
+	public PendingIntent getIntentForKey(Contact contact) {
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_GET_KEY);
+		params.putExtra(OpenPgpApi.EXTRA_KEY_ID, contact.getPgpKeyId());
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, contact.getAccount()
+				.getJid());
+		Intent result = api.executeApi(params, null, null);
+		return (PendingIntent) result
+				.getParcelableExtra(OpenPgpApi.RESULT_INTENT);
+	}
+
+	public PendingIntent getIntentForKey(Account account, long pgpKeyId) {
+		Intent params = new Intent();
+		params.setAction(OpenPgpApi.ACTION_GET_KEY);
+		params.putExtra(OpenPgpApi.EXTRA_KEY_ID, pgpKeyId);
+		params.putExtra(OpenPgpApi.EXTRA_ACCOUNT_NAME, account.getJid());
+		Intent result = api.executeApi(params, null, null);
+		return (PendingIntent) result
+				.getParcelableExtra(OpenPgpApi.RESULT_INTENT);
+	}
+}

conversations/src/main/java/eu/siacs/conversations/entities/AbstractEntity.java

@@ -0,0 +1,21 @@
+package eu.siacs.conversations.entities;
+
+import android.content.ContentValues;
+
+public abstract class AbstractEntity {
+
+	public static final String UUID = "uuid";
+
+	protected String uuid;
+
+	public String getUuid() {
+		return this.uuid;
+	}
+
+	public abstract ContentValues getContentValues();
+
+	public boolean equals(AbstractEntity entity) {
+		return this.getUuid().equals(entity.getUuid());
+	}
+
+}

conversations/src/main/java/eu/siacs/conversations/entities/Account.java

@@ -0,0 +1,399 @@
+package eu.siacs.conversations.entities;
+
+import java.security.interfaces.DSAPublicKey;
+import java.util.List;
+import java.util.Locale;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+import net.java.otr4j.crypto.OtrCryptoEngineImpl;
+import net.java.otr4j.crypto.OtrCryptoException;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.R;
+import eu.siacs.conversations.crypto.OtrEngine;
+import eu.siacs.conversations.services.XmppConnectionService;
+import eu.siacs.conversations.xmpp.XmppConnection;
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.os.SystemClock;
+
+public class Account extends AbstractEntity {
+
+	public static final String TABLENAME = "accounts";
+
+	public static final String USERNAME = "username";
+	public static final String SERVER = "server";
+	public static final String PASSWORD = "password";
+	public static final String OPTIONS = "options";
+	public static final String ROSTERVERSION = "rosterversion";
+	public static final String KEYS = "keys";
+	public static final String AVATAR = "avatar";
+
+	public static final int OPTION_USETLS = 0;
+	public static final int OPTION_DISABLED = 1;
+	public static final int OPTION_REGISTER = 2;
+	public static final int OPTION_USECOMPRESSION = 3;
+
+	public static final int STATUS_CONNECTING = 0;
+	public static final int STATUS_DISABLED = -2;
+	public static final int STATUS_OFFLINE = -1;
+	public static final int STATUS_ONLINE = 1;
+	public static final int STATUS_NO_INTERNET = 2;
+	public static final int STATUS_UNAUTHORIZED = 3;
+	public static final int STATUS_SERVER_NOT_FOUND = 5;
+
+	public static final int STATUS_REGISTRATION_FAILED = 7;
+	public static final int STATUS_REGISTRATION_CONFLICT = 8;
+	public static final int STATUS_REGISTRATION_SUCCESSFULL = 9;
+	public static final int STATUS_REGISTRATION_NOT_SUPPORTED = 10;
+
+	protected String username;
+	protected String server;
+	protected String password;
+	protected int options = 0;
+	protected String rosterVersion;
+	protected String resource = "mobile";
+	protected int status = -1;
+	protected JSONObject keys = new JSONObject();
+	protected String avatar;
+
+	protected boolean online = false;
+
+	private OtrEngine otrEngine = null;
+	private XmppConnection xmppConnection = null;
+	private Presences presences = new Presences();
+	private long mEndGracePeriod = 0L;
+	private String otrFingerprint;
+	private Roster roster = null;
+
+	private List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
+	public List<Conversation> pendingConferenceJoins = new CopyOnWriteArrayList<Conversation>();
+	public List<Conversation> pendingConferenceLeaves = new CopyOnWriteArrayList<Conversation>();
+
+	public Account() {
+		this.uuid = "0";
+	}
+
+	public Account(String username, String server, String password) {
+		this(java.util.UUID.randomUUID().toString(), username, server,
+				password, 0, null, "", null);
+	}
+
+	public Account(String uuid, String username, String server,
+			String password, int options, String rosterVersion, String keys,
+			String avatar) {
+		this.uuid = uuid;
+		this.username = username;
+		this.server = server;
+		this.password = password;
+		this.options = options;
+		this.rosterVersion = rosterVersion;
+		try {
+			this.keys = new JSONObject(keys);
+		} catch (JSONException e) {
+
+		}
+		this.avatar = avatar;
+	}
+
+	public boolean isOptionSet(int option) {
+		return ((options & (1 << option)) != 0);
+	}
+
+	public void setOption(int option, boolean value) {
+		if (value) {
+			this.options |= 1 << option;
+		} else {
+			this.options &= ~(1 << option);
+		}
+	}
+
+	public String getUsername() {
+		return username;
+	}
+
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	public String getServer() {
+		return server;
+	}
+
+	public void setServer(String server) {
+		this.server = server;
+	}
+
+	public String getPassword() {
+		return password;
+	}
+
+	public void setPassword(String password) {
+		this.password = password;
+	}
+
+	public void setStatus(int status) {
+		this.status = status;
+	}
+
+	public int getStatus() {
+		if (isOptionSet(OPTION_DISABLED)) {
+			return STATUS_DISABLED;
+		} else {
+			return this.status;
+		}
+	}
+
+	public boolean errorStatus() {
+		int s = getStatus();
+		return (s == STATUS_REGISTRATION_FAILED
+				|| s == STATUS_REGISTRATION_CONFLICT
+				|| s == STATUS_REGISTRATION_NOT_SUPPORTED
+				|| s == STATUS_SERVER_NOT_FOUND || s == STATUS_UNAUTHORIZED);
+	}
+
+	public boolean hasErrorStatus() {
+		if (getXmppConnection() == null) {
+			return false;
+		} else {
+			return getStatus() > STATUS_NO_INTERNET
+					&& (getXmppConnection().getAttempt() >= 2);
+		}
+	}
+
+	public void setResource(String resource) {
+		this.resource = resource;
+	}
+
+	public String getResource() {
+		return this.resource;
+	}
+
+	public String getJid() {
+		return username.toLowerCase(Locale.getDefault()) + "@"
+				+ server.toLowerCase(Locale.getDefault());
+	}
+
+	public JSONObject getKeys() {
+		return keys;
+	}
+
+	public String getSSLFingerprint() {
+		if (keys.has("ssl_cert")) {
+			try {
+				return keys.getString("ssl_cert");
+			} catch (JSONException e) {
+				return null;
+			}
+		} else {
+			return null;
+		}
+	}
+
+	public void setSSLCertFingerprint(String fingerprint) {
+		this.setKey("ssl_cert", fingerprint);
+	}
+
+	public boolean setKey(String keyName, String keyValue) {
+		try {
+			this.keys.put(keyName, keyValue);
+			return true;
+		} catch (JSONException e) {
+			return false;
+		}
+	}
+
+	@Override
+	public ContentValues getContentValues() {
+		ContentValues values = new ContentValues();
+		values.put(UUID, uuid);
+		values.put(USERNAME, username);
+		values.put(SERVER, server);
+		values.put(PASSWORD, password);
+		values.put(OPTIONS, options);
+		values.put(KEYS, this.keys.toString());
+		values.put(ROSTERVERSION, rosterVersion);
+		values.put(AVATAR, avatar);
+		return values;
+	}
+
+	public static Account fromCursor(Cursor cursor) {
+		return new Account(cursor.getString(cursor.getColumnIndex(UUID)),
+				cursor.getString(cursor.getColumnIndex(USERNAME)),
+				cursor.getString(cursor.getColumnIndex(SERVER)),
+				cursor.getString(cursor.getColumnIndex(PASSWORD)),
+				cursor.getInt(cursor.getColumnIndex(OPTIONS)),
+				cursor.getString(cursor.getColumnIndex(ROSTERVERSION)),
+				cursor.getString(cursor.getColumnIndex(KEYS)),
+				cursor.getString(cursor.getColumnIndex(AVATAR)));
+	}
+
+	public OtrEngine getOtrEngine(XmppConnectionService context) {
+		if (otrEngine == null) {
+			otrEngine = new OtrEngine(context, this);
+		}
+		return this.otrEngine;
+	}
+
+	public XmppConnection getXmppConnection() {
+		return this.xmppConnection;
+	}
+
+	public void setXmppConnection(XmppConnection connection) {
+		this.xmppConnection = connection;
+	}
+
+	public String getFullJid() {
+		return this.getJid() + "/" + this.resource;
+	}
+
+	public String getOtrFingerprint() {
+		if (this.otrFingerprint == null) {
+			try {
+				DSAPublicKey pubkey = (DSAPublicKey) this.otrEngine
+						.getPublicKey();
+				if (pubkey == null) {
+					return null;
+				}
+				StringBuilder builder = new StringBuilder(
+						new OtrCryptoEngineImpl().getFingerprint(pubkey));
+				builder.insert(8, " ");
+				builder.insert(17, " ");
+				builder.insert(26, " ");
+				builder.insert(35, " ");
+				this.otrFingerprint = builder.toString();
+			} catch (OtrCryptoException e) {
+
+			}
+		}
+		return this.otrFingerprint;
+	}
+
+	public String getRosterVersion() {
+		if (this.rosterVersion == null) {
+			return "";
+		} else {
+			return this.rosterVersion;
+		}
+	}
+
+	public void setRosterVersion(String version) {
+		this.rosterVersion = version;
+	}
+
+	public String getOtrFingerprint(XmppConnectionService service) {
+		this.getOtrEngine(service);
+		return this.getOtrFingerprint();
+	}
+
+	public void updatePresence(String resource, int status) {
+		this.presences.updatePresence(resource, status);
+	}
+
+	public void removePresence(String resource) {
+		this.presences.removePresence(resource);
+	}
+
+	public void clearPresences() {
+		this.presences = new Presences();
+	}
+
+	public int countPresences() {
+		return this.presences.size();
+	}
+
+	public String getPgpSignature() {
+		if (keys.has("pgp_signature")) {
+			try {
+				return keys.getString("pgp_signature");
+			} catch (JSONException e) {
+				return null;
+			}
+		} else {
+			return null;
+		}
+	}
+
+	public Roster getRoster() {
+		if (this.roster == null) {
+			this.roster = new Roster(this);
+		}
+		return this.roster;
+	}
+
+	public void setBookmarks(List<Bookmark> bookmarks) {
+		this.bookmarks = bookmarks;
+	}
+
+	public List<Bookmark> getBookmarks() {
+		return this.bookmarks;
+	}
+
+	public boolean hasBookmarkFor(String conferenceJid) {
+		for (Bookmark bmark : this.bookmarks) {
+			if (bmark.getJid().equals(conferenceJid)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	public boolean setAvatar(String filename) {
+		if (this.avatar != null && this.avatar.equals(filename)) {
+			return false;
+		} else {
+			this.avatar = filename;
+			return true;
+		}
+	}
+
+	public String getAvatar() {
+		return this.avatar;
+	}
+
+	public int getReadableStatusId() {
+		switch (getStatus()) {
+
+		case Account.STATUS_DISABLED:
+			return R.string.account_status_disabled;
+		case Account.STATUS_ONLINE:
+			return R.string.account_status_online;
+		case Account.STATUS_CONNECTING:
+			return R.string.account_status_connecting;
+		case Account.STATUS_OFFLINE:
+			return R.string.account_status_offline;
+		case Account.STATUS_UNAUTHORIZED:
+			return R.string.account_status_unauthorized;
+		case Account.STATUS_SERVER_NOT_FOUND:
+			return R.string.account_status_not_found;
+		case Account.STATUS_NO_INTERNET:
+			return R.string.account_status_no_internet;
+		case Account.STATUS_REGISTRATION_FAILED:
+			return R.string.account_status_regis_fail;
+		case Account.STATUS_REGISTRATION_CONFLICT:
+			return R.string.account_status_regis_conflict;
+		case Account.STATUS_REGISTRATION_SUCCESSFULL:
+			return R.string.account_status_regis_success;
+		case Account.STATUS_REGISTRATION_NOT_SUPPORTED:
+			return R.string.account_status_regis_not_sup;
+		default:
+			return R.string.account_status_unknown;
+		}
+	}
+
+	public void activateGracePeriod() {
+		this.mEndGracePeriod = SystemClock.elapsedRealtime()
+				+ (Config.CARBON_GRACE_PERIOD * 1000);
+	}
+
+	public void deactivateGracePeriod() {
+		this.mEndGracePeriod = 0L;
+	}
+
+	public boolean inGracePeriod() {
+		return SystemClock.elapsedRealtime() < this.mEndGracePeriod;
+	}
+}

conversations/src/main/java/eu/siacs/conversations/entities/Bookmark.java

@@ -0,0 +1,137 @@
+package eu.siacs.conversations.entities;
+
+import java.util.Locale;
+
+import eu.siacs.conversations.xml.Element;
+
+public class Bookmark extends Element implements ListItem {
+
+	private Account account;
+	private Conversation mJoinedConversation;
+
+	public Bookmark(Account account, String jid) {
+		super("conference");
+		this.setAttribute("jid", jid);
+		this.account = account;
+	}
+
+	private Bookmark(Account account) {
+		super("conference");
+		this.account = account;
+	}
+
+	public static Bookmark parse(Element element, Account account) {
+		Bookmark bookmark = new Bookmark(account);
+		bookmark.setAttributes(element.getAttributes());
+		bookmark.setChildren(element.getChildren());
+		return bookmark;
+	}
+
+	public void setAutojoin(boolean autojoin) {
+		if (autojoin) {
+			this.setAttribute("autojoin", "true");
+		} else {
+			this.setAttribute("autojoin", "false");
+		}
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public void setNick(String nick) {
+		Element element = this.findChild("nick");
+		if (element == null) {
+			element = this.addChild("nick");
+		}
+		element.setContent(nick);
+	}
+
+	public void setPassword(String password) {
+		Element element = this.findChild("password");
+		if (element != null) {
+			element.setContent(password);
+		}
+	}
+
+	@Override
+	public int compareTo(ListItem another) {
+		return this.getDisplayName().compareToIgnoreCase(
+				another.getDisplayName());
+	}
+
+	@Override
+	public String getDisplayName() {
+		if (this.mJoinedConversation != null
+				&& (this.mJoinedConversation.getMucOptions().getSubject() != null)) {
+			return this.mJoinedConversation.getMucOptions().getSubject();
+		} else if (getName() != null) {
+			return getName();
+		} else {
+			return this.getJid().split("@")[0];
+		}
+	}
+
+	@Override
+	public String getJid() {
+		String jid = this.getAttribute("jid");
+		if (jid != null) {
+			return jid.toLowerCase(Locale.US);
+		} else {
+			return null;
+		}