Make conversations the root project

12 files changed, 2612 insertions, 0 deletions

diff --git a/src/main/java/eu/siacs/conversations/entities/AbstractEntity.java b/src/main/java/eu/siacs/conversations/entities/AbstractEntity.java
new file mode 100644
index 00000000..92b8a729
--- /dev/null
+++ b/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());
+	}
+
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Account.java b/src/main/java/eu/siacs/conversations/entities/Account.java
new file mode 100644
index 00000000..80a9d62f
--- /dev/null
+++ b/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;
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Bookmark.java b/src/main/java/eu/siacs/conversations/entities/Bookmark.java
new file mode 100644
index 00000000..dd9e805c
--- /dev/null
+++ b/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;
+		}
+	}
+
+	public String getNick() {
+		Element nick = this.findChild("nick");
+		if (nick != null) {
+			return nick.getContent();
+		} else {
+			return null;
+		}
+	}
+
+	public boolean autojoin() {
+		String autojoin = this.getAttribute("autojoin");
+		return (autojoin != null && (autojoin.equalsIgnoreCase("true") || autojoin
+				.equalsIgnoreCase("1")));
+	}
+
+	public String getPassword() {
+		Element password = this.findChild("password");
+		if (password != null) {
+			return password.getContent();
+		} else {
+			return null;
+		}
+	}
+
+	public boolean match(String needle) {
+		return needle == null
+				|| getJid().contains(needle.toLowerCase(Locale.US))
+				|| getDisplayName().toLowerCase(Locale.US).contains(
+						needle.toLowerCase(Locale.US));
+	}
+
+	public Account getAccount() {
+		return this.account;
+	}
+
+	public void setConversation(Conversation conversation) {
+		this.mJoinedConversation = conversation;
+	}
+
+	public Conversation getConversation() {
+		return this.mJoinedConversation;
+	}
+
+	public String getName() {
+		return this.getAttribute("name");
+	}
+
+	public void unregisterConversation() {
+		if (this.mJoinedConversation != null) {
+			this.mJoinedConversation.deregisterWithBookmark();
+		}
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Contact.java b/src/main/java/eu/siacs/conversations/entities/Contact.java
new file mode 100644
index 00000000..60c31a42
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Contact.java
@@ -0,0 +1,367 @@
+package eu.siacs.conversations.entities;
+
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import eu.siacs.conversations.xml.Element;
+import android.content.ContentValues;
+import android.database.Cursor;
+
+public class Contact implements ListItem {
+	public static final String TABLENAME = "contacts";
+
+	public static final String SYSTEMNAME = "systemname";
+	public static final String SERVERNAME = "servername";
+	public static final String JID = "jid";
+	public static final String OPTIONS = "options";
+	public static final String SYSTEMACCOUNT = "systemaccount";
+	public static final String PHOTOURI = "photouri";
+	public static final String KEYS = "pgpkey";
+	public static final String ACCOUNT = "accountUuid";
+	public static final String AVATAR = "avatar";
+
+	protected String accountUuid;
+	protected String systemName;
+	protected String serverName;
+	protected String presenceName;
+	protected String jid;
+	protected int subscription = 0;
+	protected String systemAccount;
+	protected String photoUri;
+	protected String avatar;
+	protected JSONObject keys = new JSONObject();
+	protected Presences presences = new Presences();
+
+	protected Account account;
+
+	protected boolean inRoster = true;
+
+	public Lastseen lastseen = new Lastseen();
+
+	public Contact(String account, String systemName, String serverName,
+			String jid, int subscription, String photoUri,
+			String systemAccount, String keys, String avatar) {
+		this.accountUuid = account;
+		this.systemName = systemName;
+		this.serverName = serverName;
+		this.jid = jid;
+		this.subscription = subscription;
+		this.photoUri = photoUri;
+		this.systemAccount = systemAccount;
+		if (keys == null) {
+			keys = "";
+		}
+		try {
+			this.keys = new JSONObject(keys);
+		} catch (JSONException e) {
+			this.keys = new JSONObject();
+		}
+		this.avatar = avatar;
+	}
+
+	public Contact(String jid) {
+		this.jid = jid;
+	}
+
+	public String getDisplayName() {
+		if (this.systemName != null) {
+			return this.systemName;
+		} else if (this.serverName != null) {
+			return this.serverName;
+		} else if (this.presenceName != null) {
+			return this.presenceName;
+		} else {
+			return this.jid.split("@")[0];
+		}
+	}
+
+	public String getProfilePhoto() {
+		return this.photoUri;
+	}
+
+	public String getJid() {
+		return this.jid.toLowerCase(Locale.getDefault());
+	}
+
+	public boolean match(String needle) {
+		return needle == null
+				|| jid.contains(needle.toLowerCase())
+				|| getDisplayName().toLowerCase()
+						.contains(needle.toLowerCase());
+	}
+
+	public ContentValues getContentValues() {
+		ContentValues values = new ContentValues();
+		values.put(ACCOUNT, accountUuid);
+		values.put(SYSTEMNAME, systemName);
+		values.put(SERVERNAME, serverName);
+		values.put(JID, jid);
+		values.put(OPTIONS, subscription);
+		values.put(SYSTEMACCOUNT, systemAccount);
+		values.put(PHOTOURI, photoUri);
+		values.put(KEYS, keys.toString());
+		values.put(AVATAR, avatar);
+		return values;
+	}
+
+	public static Contact fromCursor(Cursor cursor) {
+		return new Contact(cursor.getString(cursor.getColumnIndex(ACCOUNT)),
+				cursor.getString(cursor.getColumnIndex(SYSTEMNAME)),
+				cursor.getString(cursor.getColumnIndex(SERVERNAME)),
+				cursor.getString(cursor.getColumnIndex(JID)),
+				cursor.getInt(cursor.getColumnIndex(OPTIONS)),
+				cursor.getString(cursor.getColumnIndex(PHOTOURI)),
+				cursor.getString(cursor.getColumnIndex(SYSTEMACCOUNT)),
+				cursor.getString(cursor.getColumnIndex(KEYS)),
+				cursor.getString(cursor.getColumnIndex(AVATAR)));
+	}
+
+	public int getSubscription() {
+		return this.subscription;
+	}
+
+	public void setSystemAccount(String account) {
+		this.systemAccount = account;
+	}
+
+	public void setAccount(Account account) {
+		this.account = account;
+		this.accountUuid = account.getUuid();
+	}
+
+	public Account getAccount() {
+		return this.account;
+	}
+
+	public Presences getPresences() {
+		return this.presences;
+	}
+
+	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.clearPresences();
+		this.resetOption(Options.PENDING_SUBSCRIPTION_REQUEST);
+	}
+
+	public int getMostAvailableStatus() {
+		return this.presences.getMostAvailableStatus();
+	}
+
+	public void setPresences(Presences pres) {
+		this.presences = pres;
+	}
+
+	public void setPhotoUri(String uri) {
+		this.photoUri = uri;
+	}
+
+	public void setServerName(String serverName) {
+		this.serverName = serverName;
+	}
+
+	public void setSystemName(String systemName) {
+		this.systemName = systemName;
+	}
+
+	public void setPresenceName(String presenceName) {
+		this.presenceName = presenceName;
+	}
+
+	public String getSystemAccount() {
+		return systemAccount;
+	}
+
+	public Set<String> getOtrFingerprints() {
+		Set<String> set = new HashSet<String>();
+		try {
+			if (this.keys.has("otr_fingerprints")) {
+				JSONArray fingerprints = this.keys
+						.getJSONArray("otr_fingerprints");
+				for (int i = 0; i < fingerprints.length(); ++i) {
+					set.add(fingerprints.getString(i));
+				}
+			}
+		} catch (JSONException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		return set;
+	}
+
+	public void addOtrFingerprint(String print) {
+		try {
+			JSONArray fingerprints;
+			if (!this.keys.has("otr_fingerprints")) {
+				fingerprints = new JSONArray();
+
+			} else {
+				fingerprints = this.keys.getJSONArray("otr_fingerprints");
+			}
+			fingerprints.put(print);
+			this.keys.put("otr_fingerprints", fingerprints);
+		} catch (JSONException e) {
+
+		}
+	}
+
+	public void setPgpKeyId(long keyId) {
+		try {
+			this.keys.put("pgp_keyid", keyId);
+		} catch (JSONException e) {
+
+		}
+	}
+
+	public long getPgpKeyId() {
+		if (this.keys.has("pgp_keyid")) {
+			try {
+				return this.keys.getLong("pgp_keyid");
+			} catch (JSONException e) {
+				return 0;
+			}
+		} else {
+			return 0;
+		}
+	}
+
+	public void setOption(int option) {
+		this.subscription |= 1 << option;
+	}
+
+	public void resetOption(int option) {
+		this.subscription &= ~(1 << option);
+	}
+
+	public boolean getOption(int option) {
+		return ((this.subscription & (1 << option)) != 0);
+	}
+
+	public boolean showInRoster() {
+		return (this.getOption(Contact.Options.IN_ROSTER) && (!this
+				.getOption(Contact.Options.DIRTY_DELETE)))
+				|| (this.getOption(Contact.Options.DIRTY_PUSH));
+	}
+
+	public void parseSubscriptionFromElement(Element item) {
+		String ask = item.getAttribute("ask");
+		String subscription = item.getAttribute("subscription");
+
+		if (subscription != null) {
+			if (subscription.equals("to")) {
+				this.resetOption(Contact.Options.FROM);
+				this.setOption(Contact.Options.TO);
+			} else if (subscription.equals("from")) {
+				this.resetOption(Contact.Options.TO);
+				this.setOption(Contact.Options.FROM);
+				this.resetOption(Contact.Options.PREEMPTIVE_GRANT);
+			} else if (subscription.equals("both")) {
+				this.setOption(Contact.Options.TO);
+				this.setOption(Contact.Options.FROM);
+				this.resetOption(Contact.Options.PREEMPTIVE_GRANT);
+			} else if (subscription.equals("none")) {
+				this.resetOption(Contact.Options.FROM);
+				this.resetOption(Contact.Options.TO);
+			}
+		}
+
+		// do NOT override asking if pending push request
+		if (!this.getOption(Contact.Options.DIRTY_PUSH)) {
+			if ((ask != null) && (ask.equals("subscribe"))) {
+				this.setOption(Contact.Options.ASKING);
+			} else {
+				this.resetOption(Contact.Options.ASKING);
+			}
+		}
+	}
+
+	public Element asElement() {
+		Element item = new Element("item");
+		item.setAttribute("jid", this.jid);
+		if (this.serverName != null) {
+			item.setAttribute("name", this.serverName);
+		}
+		return item;
+	}
+
+	public class Options {
+		public static final int TO = 0;
+		public static final int FROM = 1;
+		public static final int ASKING = 2;
+		public static final int PREEMPTIVE_GRANT = 3;
+		public static final int IN_ROSTER = 4;
+		public static final int PENDING_SUBSCRIPTION_REQUEST = 5;
+		public static final int DIRTY_PUSH = 6;
+		public static final int DIRTY_DELETE = 7;
+	}
+
+	public class Lastseen {
+		public long time = 0;
+		public String presence = null;
+	}
+
+	@Override
+	public int compareTo(ListItem another) {
+		return this.getDisplayName().compareToIgnoreCase(
+				another.getDisplayName());
+	}
+
+	public String getServer() {
+		String[] split = getJid().split("@");
+		if (split.length >= 2) {
+			return split[1];
+		} else {
+			return null;
+		}
+	}
+
+	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 boolean deleteOtrFingerprint(String fingerprint) {
+		boolean success = false;
+		try {
+			if (this.keys.has("otr_fingerprints")) {
+				JSONArray newPrints = new JSONArray();
+				JSONArray oldPrints = this.keys
+						.getJSONArray("otr_fingerprints");
+				for (int i = 0; i < oldPrints.length(); ++i) {
+					if (!oldPrints.getString(i).equals(fingerprint)) {
+						newPrints.put(oldPrints.getString(i));
+					} else {
+						success = true;
+					}
+				}
+				this.keys.put("otr_fingerprints", newPrints);
+			}
+			return success;
+		} catch (JSONException e) {
+			return false;
+		}
+	}
+
+	public boolean trusted() {
+		return getOption(Options.FROM) && getOption(Options.TO);
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Conversation.java b/src/main/java/eu/siacs/conversations/entities/Conversation.java
new file mode 100644
index 00000000..9d4c36db
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Conversation.java
@@ -0,0 +1,500 @@
+package eu.siacs.conversations.entities;
+
+import java.security.interfaces.DSAPublicKey;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import eu.siacs.conversations.services.XmppConnectionService;
+
+import net.java.otr4j.OtrException;
+import net.java.otr4j.crypto.OtrCryptoEngineImpl;
+import net.java.otr4j.crypto.OtrCryptoException;
+import net.java.otr4j.session.SessionID;
+import net.java.otr4j.session.SessionImpl;
+import net.java.otr4j.session.SessionStatus;
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.os.SystemClock;
+
+public class Conversation extends AbstractEntity {
+	public static final String TABLENAME = "conversations";
+
+	public static final int STATUS_AVAILABLE = 0;
+	public static final int STATUS_ARCHIVED = 1;
+	public static final int STATUS_DELETED = 2;
+
+	public static final int MODE_MULTI = 1;
+	public static final int MODE_SINGLE = 0;
+
+	public static final String NAME = "name";
+	public static final String ACCOUNT = "accountUuid";
+	public static final String CONTACT = "contactUuid";
+	public static final String CONTACTJID = "contactJid";
+	public static final String STATUS = "status";
+	public static final String CREATED = "created";
+	public static final String MODE = "mode";
+	public static final String ATTRIBUTES = "attributes";
+
+	public static final String ATTRIBUTE_NEXT_ENCRYPTION = "next_encryption";
+	public static final String ATTRIBUTE_MUC_PASSWORD = "muc_password";
+	public static final String ATTRIBUTE_MUTED_TILL = "muted_till";
+
+	private String name;
+	private String contactUuid;
+	private String accountUuid;
+	private String contactJid;
+	private int status;
+	private long created;
+	private int mode;
+
+	private JSONObject attributes = new JSONObject();
+
+	private String nextPresence;
+
+	protected ArrayList<Message> messages = new ArrayList<Message>();
+	protected Account account = null;
+
+	private transient SessionImpl otrSession;
+
+	private transient String otrFingerprint = null;
+
+	private String nextMessage;
+
+	private transient MucOptions mucOptions = null;
+
+	// private transient String latestMarkableMessageId;
+
+	private byte[] symmetricKey;
+
+	private Bookmark bookmark;
+
+	public Conversation(String name, Account account, String contactJid,
+			int mode) {
+		this(java.util.UUID.randomUUID().toString(), name, null, account
+				.getUuid(), contactJid, System.currentTimeMillis(),
+				STATUS_AVAILABLE, mode, "");
+		this.account = account;
+	}
+
+	public Conversation(String uuid, String name, String contactUuid,
+			String accountUuid, String contactJid, long created, int status,
+			int mode, String attributes) {
+		this.uuid = uuid;
+		this.name = name;
+		this.contactUuid = contactUuid;
+		this.accountUuid = accountUuid;
+		this.contactJid = contactJid;
+		this.created = created;
+		this.status = status;
+		this.mode = mode;
+		try {
+			if (attributes == null) {
+				attributes = new String();
+			}
+			this.attributes = new JSONObject(attributes);
+		} catch (JSONException e) {
+			this.attributes = new JSONObject();
+		}
+	}
+
+	public List<Message> getMessages() {
+		return messages;
+	}
+
+	public boolean isRead() {
+		if ((this.messages == null) || (this.messages.size() == 0))
+			return true;
+		return this.messages.get(this.messages.size() - 1).isRead();
+	}
+
+	public void markRead() {
+		if (this.messages == null) {
+			return;
+		}
+		for (int i = this.messages.size() - 1; i >= 0; --i) {
+			if (messages.get(i).isRead()) {
+				break;
+			}
+			this.messages.get(i).markRead();
+		}
+	}
+
+	public String getLatestMarkableMessageId() {
+		if (this.messages == null) {
+			return null;
+		}
+		for (int i = this.messages.size() - 1; i >= 0; --i) {
+			if (this.messages.get(i).getStatus() <= Message.STATUS_RECEIVED
+					&& this.messages.get(i).markable) {
+				if (this.messages.get(i).isRead()) {
+					return null;
+				} else {
+					return this.messages.get(i).getRemoteMsgId();
+				}
+			}
+		}
+		return null;
+	}
+
+	public Message getLatestMessage() {
+		if ((this.messages == null) || (this.messages.size() == 0)) {
+			Message message = new Message(this, "", Message.ENCRYPTION_NONE);
+			message.setTime(getCreated());
+			return message;
+		} else {
+			Message message = this.messages.get(this.messages.size() - 1);
+			message.setConversation(this);
+			return message;
+		}
+	}
+
+	public void setMessages(ArrayList<Message> msgs) {
+		this.messages = msgs;
+	}
+
+	public String getName() {
+		if (getMode() == MODE_MULTI && getMucOptions().getSubject() != null) {
+			return getMucOptions().getSubject();
+		} else if (getMode() == MODE_MULTI && bookmark != null
+				&& bookmark.getName() != null) {
+			return bookmark.getName();
+		} else {
+			return this.getContact().getDisplayName();
+		}
+	}
+
+	public String getProfilePhotoString() {
+		return this.getContact().getProfilePhoto();
+	}
+
+	public String getAccountUuid() {
+		return this.accountUuid;
+	}
+
+	public Account getAccount() {
+		return this.account;
+	}
+
+	public Contact getContact() {
+		return this.account.getRoster().getContact(this.contactJid);
+	}
+
+	public void setAccount(Account account) {
+		this.account = account;
+	}
+
+	public String getContactJid() {
+		return this.contactJid;
+	}
+
+	public int getStatus() {
+		return this.status;
+	}
+
+	public long getCreated() {
+		return this.created;
+	}
+
+	public ContentValues getContentValues() {
+		ContentValues values = new ContentValues();
+		values.put(UUID, uuid);
+		values.put(NAME, name);
+		values.put(CONTACT, contactUuid);
+		values.put(ACCOUNT, accountUuid);
+		values.put(CONTACTJID, contactJid);
+		values.put(CREATED, created);
+		values.put(STATUS, status);
+		values.put(MODE, mode);
+		values.put(ATTRIBUTES, attributes.toString());
+		return values;
+	}
+
+	public static Conversation fromCursor(Cursor cursor) {
+		return new Conversation(cursor.getString(cursor.getColumnIndex(UUID)),
+				cursor.getString(cursor.getColumnIndex(NAME)),
+				cursor.getString(cursor.getColumnIndex(CONTACT)),
+				cursor.getString(cursor.getColumnIndex(ACCOUNT)),
+				cursor.getString(cursor.getColumnIndex(CONTACTJID)),
+				cursor.getLong(cursor.getColumnIndex(CREATED)),
+				cursor.getInt(cursor.getColumnIndex(STATUS)),
+				cursor.getInt(cursor.getColumnIndex(MODE)),
+				cursor.getString(cursor.getColumnIndex(ATTRIBUTES)));
+	}
+
+	public void setStatus(int status) {
+		this.status = status;
+	}
+
+	public int getMode() {
+		return this.mode;
+	}
+
+	public void setMode(int mode) {
+		this.mode = mode;
+	}
+
+	public SessionImpl startOtrSession(XmppConnectionService service,
+			String presence, boolean sendStart) {
+		if (this.otrSession != null) {
+			return this.otrSession;
+		} else {
+			SessionID sessionId = new SessionID(this.getContactJid().split("/",
+					2)[0], presence, "xmpp");
+			this.otrSession = new SessionImpl(sessionId, getAccount()
+					.getOtrEngine(service));
+			try {
+				if (sendStart) {
+					this.otrSession.startSession();
+					return this.otrSession;
+				}
+				return this.otrSession;
+			} catch (OtrException e) {
+				return null;
+			}
+		}
+
+	}
+
+	public SessionImpl getOtrSession() {
+		return this.otrSession;
+	}
+
+	public void resetOtrSession() {
+		this.otrFingerprint = null;
+		this.otrSession = null;
+	}
+
+	public void startOtrIfNeeded() {
+		if (this.otrSession != null
+				&& this.otrSession.getSessionStatus() != SessionStatus.ENCRYPTED) {
+			try {
+				this.otrSession.startSession();
+			} catch (OtrException e) {
+				this.resetOtrSession();
+			}
+		}
+	}
+
+	public boolean endOtrIfNeeded() {
+		if (this.otrSession != null) {
+			if (this.otrSession.getSessionStatus() == SessionStatus.ENCRYPTED) {
+				try {
+					this.otrSession.endSession();
+					this.resetOtrSession();
+					return true;
+				} catch (OtrException e) {
+					this.resetOtrSession();
+					return false;
+				}
+			} else {
+				this.resetOtrSession();
+				return false;
+			}
+		} else {
+			return false;
+		}
+	}
+
+	public boolean hasValidOtrSession() {
+		return this.otrSession != null;
+	}
+
+	public String getOtrFingerprint() {
+		if (this.otrFingerprint == null) {
+			try {
+				if (getOtrSession() == null) {
+					return "";
+				}
+				DSAPublicKey remotePubKey = (DSAPublicKey) getOtrSession()
+						.getRemotePublicKey();
+				StringBuilder builder = new StringBuilder(
+						new OtrCryptoEngineImpl().getFingerprint(remotePubKey));
+				builder.insert(8, " ");
+				builder.insert(17, " ");
+				builder.insert(26, " ");
+				builder.insert(35, " ");
+				this.otrFingerprint = builder.toString();
+			} catch (OtrCryptoException e) {
+
+			}
+		}
+		return this.otrFingerprint;
+	}
+
+	public synchronized MucOptions getMucOptions() {
+		if (this.mucOptions == null) {
+			this.mucOptions = new MucOptions(this);
+		}
+		return this.mucOptions;
+	}
+
+	public void resetMucOptions() {
+		this.mucOptions = null;
+	}
+
+	public void setContactJid(String jid) {
+		this.contactJid = jid;
+	}
+
+	public void setNextPresence(String presence) {
+		this.nextPresence = presence;
+	}
+
+	public String getNextPresence() {
+		return this.nextPresence;
+	}
+
+	public int getLatestEncryption() {
+		int latestEncryption = this.getLatestMessage().getEncryption();
+		if ((latestEncryption == Message.ENCRYPTION_DECRYPTED)
+				|| (latestEncryption == Message.ENCRYPTION_DECRYPTION_FAILED)) {
+			return Message.ENCRYPTION_PGP;
+		} else {
+			return latestEncryption;
+		}
+	}
+
+	public int getNextEncryption(boolean force) {
+		int next = this.getIntAttribute(ATTRIBUTE_NEXT_ENCRYPTION, -1);
+		if (next == -1) {
+			int latest = this.getLatestEncryption();
+			if (latest == Message.ENCRYPTION_NONE) {
+				if (force && getMode() == MODE_SINGLE) {
+					return Message.ENCRYPTION_OTR;
+				} else if (getContact().getPresences().size() == 1) {
+					if (getContact().getOtrFingerprints().size() >= 1) {
+						return Message.ENCRYPTION_OTR;
+					} else {
+						return latest;
+					}
+				} else {
+					return latest;
+				}
+			} else {
+				return latest;
+			}
+		}
+		if (next == Message.ENCRYPTION_NONE && force
+				&& getMode() == MODE_SINGLE) {
+			return Message.ENCRYPTION_OTR;
+		} else {
+			return next;
+		}
+	}
+
+	public void setNextEncryption(int encryption) {
+		this.setAttribute(ATTRIBUTE_NEXT_ENCRYPTION, String.valueOf(encryption));
+	}
+
+	public String getNextMessage() {
+		if (this.nextMessage == null) {
+			return "";
+		} else {
+			return this.nextMessage;
+		}
+	}
+
+	public void setNextMessage(String message) {
+		this.nextMessage = message;
+	}
+
+	public void setSymmetricKey(byte[] key) {
+		this.symmetricKey = key;
+	}
+
+	public byte[] getSymmetricKey() {
+		return this.symmetricKey;
+	}
+
+	public void setBookmark(Bookmark bookmark) {
+		this.bookmark = bookmark;
+		this.bookmark.setConversation(this);
+	}
+
+	public void deregisterWithBookmark() {
+		if (this.bookmark != null) {
+			this.bookmark.setConversation(null);
+		}
+	}
+
+	public Bookmark getBookmark() {
+		return this.bookmark;
+	}
+
+	public boolean hasDuplicateMessage(Message message) {
+		for (int i = this.getMessages().size() - 1; i >= 0; --i) {
+			if (this.messages.get(i).equals(message)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	public void setMutedTill(long value) {
+		this.setAttribute(ATTRIBUTE_MUTED_TILL, String.valueOf(value));
+	}
+
+	public boolean isMuted() {
+		return SystemClock.elapsedRealtime() < this.getLongAttribute(
+				ATTRIBUTE_MUTED_TILL, 0);
+	}
+
+	public boolean setAttribute(String key, String value) {
+		try {
+			this.attributes.put(key, value);
+			return true;
+		} catch (JSONException e) {
+			return false;
+		}
+	}
+
+	public String getAttribute(String key) {
+		try {
+			return this.attributes.getString(key);
+		} catch (JSONException e) {
+			return null;
+		}
+	}
+
+	public int getIntAttribute(String key, int defaultValue) {
+		String value = this.getAttribute(key);
+		if (value == null) {
+			return defaultValue;
+		} else {
+			try {
+				return Integer.parseInt(value);
+			} catch (NumberFormatException e) {
+				return defaultValue;
+			}
+		}
+	}
+
+	public long getLongAttribute(String key, long defaultValue) {
+		String value = this.getAttribute(key);
+		if (value == null) {
+			return defaultValue;
+		} else {
+			try {
+				return Long.parseLong(value);
+			} catch (NumberFormatException e) {
+				return defaultValue;
+			}
+		}
+	}
+
+	public void add(Message message) {
+		message.setConversation(this);
+		synchronized (this.messages) {
+			this.messages.add(message);
+		}
+	}
+
+	public void addAll(int index, List<Message> messages) {
+		synchronized (this.messages) {
+			this.messages.addAll(index, messages);
+		}
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Downloadable.java b/src/main/java/eu/siacs/conversations/entities/Downloadable.java
new file mode 100644
index 00000000..70516b20
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Downloadable.java
@@ -0,0 +1,21 @@
+package eu.siacs.conversations.entities;
+
+public interface Downloadable {
+
+	public final String[] VALID_EXTENSIONS = { "webp", "jpeg", "jpg", "png" };
+	public final 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 boolean start();
+
+	public int getStatus();
+
+	public long getFileSize();
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/DownloadableFile.java b/src/main/java/eu/siacs/conversations/entities/DownloadableFile.java
new file mode 100644
index 00000000..1605c75b
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/DownloadableFile.java
@@ -0,0 +1,154 @@
+package eu.siacs.conversations.entities;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Cipher;
+import javax.crypto.CipherInputStream;
+import javax.crypto.CipherOutputStream;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+import eu.siacs.conversations.Config;
+import android.util.Log;
+
+public class DownloadableFile extends File {
+
+	private static final long serialVersionUID = 2247012619505115863L;
+
+	private long expectedSize = 0;
+	private String sha1sum;
+	private Key aeskey;
+
+	private byte[] iv = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+			0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0xf };
+
+	public DownloadableFile(String path) {
+		super(path);
+	}
+
+	public long getSize() {
+		return super.length();
+	}
+
+	public long getExpectedSize() {
+		if (this.aeskey != null) {
+			if (this.expectedSize == 0) {
+				return 0;
+			} else {
+				return (this.expectedSize / 16 + 1) * 16;
+			}
+		} else {
+			return this.expectedSize;
+		}
+	}
+
+	public void setExpectedSize(long size) {
+		this.expectedSize = size;
+	}
+
+	public String getSha1Sum() {
+		return this.sha1sum;
+	}
+
+	public void setSha1Sum(String sum) {
+		this.sha1sum = sum;
+	}
+
+	public void setKey(byte[] key) {
+		if (key.length == 48) {
+			byte[] secretKey = new byte[32];
+			byte[] iv = new byte[16];
+			System.arraycopy(key, 0, iv, 0, 16);
+			System.arraycopy(key, 16, secretKey, 0, 32);
+			this.aeskey = new SecretKeySpec(secretKey, "AES");
+			this.iv = iv;
+		} else if (key.length >= 32) {
+			byte[] secretKey = new byte[32];
+			System.arraycopy(key, 0, secretKey, 0, 32);
+			this.aeskey = new SecretKeySpec(secretKey, "AES");
+		} else if (key.length >= 16) {
+			byte[] secretKey = new byte[16];
+			System.arraycopy(key, 0, secretKey, 0, 16);
+			this.aeskey = new SecretKeySpec(secretKey, "AES");
+		}
+	}
+
+	public Key getKey() {
+		return this.aeskey;
+	}
+
+	public InputStream createInputStream() {
+		if (this.getKey() == null) {
+			try {
+				return new FileInputStream(this);
+			} catch (FileNotFoundException e) {
+				return null;
+			}
+		} else {
+			try {
+				IvParameterSpec ips = new IvParameterSpec(iv);
+				Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
+				cipher.init(Cipher.ENCRYPT_MODE, this.getKey(), ips);
+				Log.d(Config.LOGTAG, "opening encrypted input stream");
+				return new CipherInputStream(new FileInputStream(this), cipher);
+			} catch (NoSuchAlgorithmException e) {
+				Log.d(Config.LOGTAG, "no such algo: " + e.getMessage());
+				return null;
+			} catch (NoSuchPaddingException e) {
+				Log.d(Config.LOGTAG, "no such padding: " + e.getMessage());
+				return null;
+			} catch (InvalidKeyException e) {
+				Log.d(Config.LOGTAG, "invalid key: " + e.getMessage());
+				return null;
+			} catch (InvalidAlgorithmParameterException e) {
+				Log.d(Config.LOGTAG, "invavid iv:" + e.getMessage());
+				return null;
+			} catch (FileNotFoundException e) {
+				return null;
+			}
+		}
+	}
+
+	public OutputStream createOutputStream() {
+		if (this.getKey() == null) {
+			try {
+				return new FileOutputStream(this);
+			} catch (FileNotFoundException e) {
+				return null;
+			}
+		} else {
+			try {
+				IvParameterSpec ips = new IvParameterSpec(this.iv);
+				Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
+				cipher.init(Cipher.DECRYPT_MODE, this.getKey(), ips);
+				Log.d(Config.LOGTAG, "opening encrypted output stream");
+				return new CipherOutputStream(new FileOutputStream(this),
+						cipher);
+			} catch (NoSuchAlgorithmException e) {
+				Log.d(Config.LOGTAG, "no such algo: " + e.getMessage());
+				return null;
+			} catch (NoSuchPaddingException e) {
+				Log.d(Config.LOGTAG, "no such padding: " + e.getMessage());
+				return null;
+			} catch (InvalidKeyException e) {
+				Log.d(Config.LOGTAG, "invalid key: " + e.getMessage());
+				return null;
+			} catch (InvalidAlgorithmParameterException e) {
+				Log.d(Config.LOGTAG, "invavid iv:" + e.getMessage());
+				return null;
+			} catch (FileNotFoundException e) {
+				return null;
+			}
+		}
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/ListItem.java b/src/main/java/eu/siacs/conversations/entities/ListItem.java
new file mode 100644
index 00000000..a1872d2f
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/ListItem.java
@@ -0,0 +1,7 @@
+package eu.siacs.conversations.entities;
+
+public interface ListItem extends Comparable<ListItem> {
+	public String getDisplayName();
+
+	public String getJid();
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Message.java b/src/main/java/eu/siacs/conversations/entities/Message.java
new file mode 100644
index 00000000..a390c7ca
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Message.java
@@ -0,0 +1,478 @@
+package eu.siacs.conversations.entities;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Arrays;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.R;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+
+public class Message extends AbstractEntity {
+
+	public static final String TABLENAME = "messages";
+
+	public static final int STATUS_RECEIVED = 0;
+	public static final int STATUS_UNSEND = 1;
+	public static final int STATUS_SEND = 2;
+	public static final int STATUS_SEND_FAILED = 3;
+	public static final int STATUS_SEND_REJECTED = 4;
+	public static final int STATUS_WAITING = 5;
+	public static final int STATUS_OFFERED = 6;
+	public static final int STATUS_SEND_RECEIVED = 7;
+	public static final int STATUS_SEND_DISPLAYED = 8;
+
+	public static final int ENCRYPTION_NONE = 0;
+	public static final int ENCRYPTION_PGP = 1;
+	public static final int ENCRYPTION_OTR = 2;
+	public static final int ENCRYPTION_DECRYPTED = 3;
+	public static final int ENCRYPTION_DECRYPTION_FAILED = 4;
+
+	public static final int TYPE_TEXT = 0;
+	public static final int TYPE_IMAGE = 1;
+	public static final int TYPE_AUDIO = 2;
+	public static final int TYPE_STATUS = 3;
+	public static final int TYPE_PRIVATE = 4;
+
+	public static String CONVERSATION = "conversationUuid";
+	public static String COUNTERPART = "counterpart";
+	public static String TRUE_COUNTERPART = "trueCounterpart";
+	public static String BODY = "body";
+	public static String TIME_SENT = "timeSent";
+	public static String ENCRYPTION = "encryption";
+	public static String STATUS = "status";
+	public static String TYPE = "type";
+	public static String REMOTE_MSG_ID = "remoteMsgId";
+
+	protected String conversationUuid;
+	protected String counterpart;
+	protected String trueCounterpart;
+	protected String body;
+	protected String encryptedBody;
+	protected long timeSent;
+	protected int encryption;
+	protected int status;
+	protected int type;
+	protected boolean read = true;
+	protected String remoteMsgId = null;
+
+	protected Conversation conversation = null;
+	protected Downloadable downloadable = null;
+	public boolean markable = false;
+
+	private Message mNextMessage = null;
+	private Message mPreviousMessage = null;
+
+	private Message() {
+
+	}
+
+	public Message(Conversation conversation, String body, int encryption) {
+		this(java.util.UUID.randomUUID().toString(), conversation.getUuid(),
+				conversation.getContactJid(), null, body, System
+						.currentTimeMillis(), encryption,
+				Message.STATUS_UNSEND, TYPE_TEXT, null);
+		this.conversation = conversation;
+	}
+
+	public Message(Conversation conversation, String counterpart, String body,
+			int encryption, int status) {
+		this(java.util.UUID.randomUUID().toString(), conversation.getUuid(),
+				counterpart, null, body, System.currentTimeMillis(),
+				encryption, status, TYPE_TEXT, null);
+		this.conversation = conversation;
+	}
+
+	public Message(String uuid, String conversationUUid, String counterpart,
+			String trueCounterpart, String body, long timeSent, int encryption,
+			int status, int type, String remoteMsgId) {
+		this.uuid = uuid;
+		this.conversationUuid = conversationUUid;
+		this.counterpart = counterpart;
+		this.trueCounterpart = trueCounterpart;
+		this.body = body;
+		this.timeSent = timeSent;
+		this.encryption = encryption;
+		this.status = status;
+		this.type = type;
+		this.remoteMsgId = remoteMsgId;
+	}
+
+	@Override
+	public ContentValues getContentValues() {
+		ContentValues values = new ContentValues();
+		values.put(UUID, uuid);
+		values.put(CONVERSATION, conversationUuid);
+		values.put(COUNTERPART, counterpart);
+		values.put(TRUE_COUNTERPART, trueCounterpart);
+		values.put(BODY, body);
+		values.put(TIME_SENT, timeSent);
+		values.put(ENCRYPTION, encryption);
+		values.put(STATUS, status);
+		values.put(TYPE, type);
+		values.put(REMOTE_MSG_ID, remoteMsgId);
+		return values;
+	}
+
+	public String getConversationUuid() {
+		return conversationUuid;
+	}
+
+	public Conversation getConversation() {
+		return this.conversation;
+	}
+
+	public String getCounterpart() {
+		return counterpart;
+	}
+
+	public Contact getContact() {
+		if (this.conversation.getMode() == Conversation.MODE_SINGLE) {
+			return this.conversation.getContact();
+		} else {
+			if (this.trueCounterpart == null) {
+				return null;
+			} else {
+				return this.conversation.getAccount().getRoster()
+						.getContactFromRoster(this.trueCounterpart);
+			}
+		}
+	}
+
+	public String getBody() {
+		return body;
+	}
+
+	public String getReadableBody(Context context) {
+		if (encryption == ENCRYPTION_PGP) {
+			return context.getText(R.string.encrypted_message_received)
+					.toString();
+		} else if (encryption == ENCRYPTION_DECRYPTION_FAILED) {
+			return context.getText(R.string.decryption_failed).toString();
+		} else if (type == TYPE_IMAGE) {
+			return context.getText(R.string.image_file).toString();
+		} else {
+			return body.trim();
+		}
+	}
+
+	public long getTimeSent() {
+		return timeSent;
+	}
+
+	public int getEncryption() {
+		return encryption;
+	}
+
+	public int getStatus() {
+		return status;
+	}
+
+	public String getRemoteMsgId() {
+		return this.remoteMsgId;
+	}
+
+	public void setRemoteMsgId(String id) {
+		this.remoteMsgId = id;
+	}
+
+	public static Message fromCursor(Cursor cursor) {
+		return new Message(cursor.getString(cursor.getColumnIndex(UUID)),
+				cursor.getString(cursor.getColumnIndex(CONVERSATION)),
+				cursor.getString(cursor.getColumnIndex(COUNTERPART)),
+				cursor.getString(cursor.getColumnIndex(TRUE_COUNTERPART)),
+				cursor.getString(cursor.getColumnIndex(BODY)),
+				cursor.getLong(cursor.getColumnIndex(TIME_SENT)),
+				cursor.getInt(cursor.getColumnIndex(ENCRYPTION)),
+				cursor.getInt(cursor.getColumnIndex(STATUS)),
+				cursor.getInt(cursor.getColumnIndex(TYPE)),
+				cursor.getString(cursor.getColumnIndex(REMOTE_MSG_ID)));
+	}
+
+	public void setConversation(Conversation conv) {
+		this.conversation = conv;
+	}
+
+	public void setStatus(int status) {
+		this.status = status;
+	}
+
+	public boolean isRead() {
+		return this.read;
+	}
+
+	public void markRead() {
+		this.read = true;
+	}
+
+	public void markUnread() {
+		this.read = false;
+	}
+
+	public void setTime(long time) {
+		this.timeSent = time;
+	}
+
+	public void setEncryption(int encryption) {
+		this.encryption = encryption;
+	}
+
+	public void setBody(String body) {
+		this.body = body;
+	}
+
+	public String getEncryptedBody() {
+		return this.encryptedBody;
+	}
+
+	public void setEncryptedBody(String body) {
+		this.encryptedBody = body;
+	}
+
+	public void setType(int type) {
+		this.type = type;
+	}
+
+	public int getType() {
+		return this.type;
+	}
+
+	public void setPresence(String presence) {
+		if (presence == null) {
+			this.counterpart = this.counterpart.split("/", 2)[0];
+		} else {
+			this.counterpart = this.counterpart.split("/", 2)[0] + "/"
+					+ presence;
+		}
+	}
+
+	public void setTrueCounterpart(String trueCounterpart) {
+		this.trueCounterpart = trueCounterpart;
+	}
+
+	public String getPresence() {
+		String[] counterparts = this.counterpart.split("/", 2);
+		if (counterparts.length == 2) {
+			return counterparts[1];
+		} else {
+			if (this.counterpart.contains("/")) {
+				return "";
+			} else {
+				return null;
+			}
+		}
+	}
+
+	public void setDownloadable(Downloadable downloadable) {
+		this.downloadable = downloadable;
+	}
+
+	public Downloadable getDownloadable() {
+		return this.downloadable;
+	}
+
+	public static Message createStatusMessage(Conversation conversation) {
+		Message message = new Message();
+		message.setType(Message.TYPE_STATUS);
+		message.setConversation(conversation);
+		return message;
+	}
+
+	public void setCounterpart(String counterpart) {
+		this.counterpart = counterpart;
+	}
+
+	public boolean equals(Message message) {
+		if ((this.remoteMsgId != null) && (this.body != null)
+				&& (this.counterpart != null)) {
+			return this.remoteMsgId.equals(message.getRemoteMsgId())
+					&& this.body.equals(message.getBody())
+					&& this.counterpart.equals(message.getCounterpart());
+		} else {
+			return false;
+		}
+	}
+
+	public Message next() {
+		if (this.mNextMessage == null) {
+			synchronized (this.conversation.messages) {
+				int index = this.conversation.messages.indexOf(this);
+				if (index < 0
+						|| index >= this.conversation.getMessages().size() - 1) {
+					this.mNextMessage = null;
+				} else {
+					this.mNextMessage = this.conversation.messages
+							.get(index + 1);
+				}
+			}
+		}
+		return this.mNextMessage;
+	}
+
+	public Message prev() {
+		if (this.mPreviousMessage == null) {
+			synchronized (this.conversation.messages) {
+				int index = this.conversation.messages.indexOf(this);
+				if (index <= 0 || index > this.conversation.messages.size()) {
+					this.mPreviousMessage = null;
+				} else {
+					this.mPreviousMessage = this.conversation.messages
+							.get(index - 1);
+				}
+			}
+		}
+		return this.mPreviousMessage;
+	}
+
+	public boolean mergable(Message message) {
+		if (message == null) {
+			return false;
+		}
+		return (message.getType() == Message.TYPE_TEXT
+				&& this.getDownloadable() == null
+				&& message.getDownloadable() == null
+				&& message.getEncryption() != Message.ENCRYPTION_PGP
+				&& this.getType() == message.getType()
+				&& this.getEncryption() == message.getEncryption()
+				&& this.getCounterpart().equals(message.getCounterpart())
+				&& (message.getTimeSent() - this.getTimeSent()) <= (Config.MESSAGE_MERGE_WINDOW * 1000) && ((this
+				.getStatus() == message.getStatus() || ((this.getStatus() == Message.STATUS_SEND || this
+				.getStatus() == Message.STATUS_SEND_RECEIVED) && (message
+				.getStatus() == Message.STATUS_UNSEND
+				|| message.getStatus() == Message.STATUS_SEND || message
+					.getStatus() == Message.STATUS_SEND_DISPLAYED)))));
+	}
+
+	public String getMergedBody() {
+		Message next = this.next();
+		if (this.mergable(next)) {
+			return body.trim() + '\n' + next.getMergedBody();
+		}
+		return body.trim();
+	}
+
+	public int getMergedStatus() {
+		Message next = this.next();
+		if (this.mergable(next)) {
+			return next.getMergedStatus();
+		} else {
+			return getStatus();
+		}
+	}
+
+	public long getMergedTimeSent() {
+		Message next = this.next();
+		if (this.mergable(next)) {
+			return next.getMergedTimeSent();
+		} else {
+			return getTimeSent();
+		}
+	}
+
+	public boolean wasMergedIntoPrevious() {
+		Message prev = this.prev();
+		if (prev == null) {
+			return false;
+		} else {
+			return prev.mergable(this);
+		}
+	}
+
+	public boolean bodyContainsDownloadable() {
+		Contact contact = this.getContact();
+		if (status <= STATUS_RECEIVED
+				&& (contact == null || !contact.trusted())) {
+			return false;
+		}
+		try {
+			URL url = new URL(this.getBody());
+			if (!url.getProtocol().equalsIgnoreCase("http")
+					&& !url.getProtocol().equalsIgnoreCase("https")) {
+				return false;
+			}
+			if (url.getPath() == null) {
+				return false;
+			}
+			String[] pathParts = url.getPath().split("/");
+			String filename = pathParts[pathParts.length - 1];
+			String[] extensionParts = filename.split("\\.");
+			if (extensionParts.length == 2
+					&& Arrays.asList(Downloadable.VALID_EXTENSIONS).contains(
+							extensionParts[extensionParts.length - 1])) {
+				return true;
+			} else if (extensionParts.length == 3
+					&& Arrays
+							.asList(Downloadable.VALID_CRYPTO_EXTENSIONS)
+							.contains(extensionParts[extensionParts.length - 1])
+					&& Arrays.asList(Downloadable.VALID_EXTENSIONS).contains(
+							extensionParts[extensionParts.length - 2])) {
+				return true;
+			} else {
+				return false;
+			}
+		} catch (MalformedURLException e) {
+			return false;
+		}
+	}
+
+	public ImageParams getImageParams() {
+		ImageParams params = new ImageParams();
+		if (this.downloadable != null) {
+			params.size = this.downloadable.getFileSize();
+		}
+		if (body == null) {
+			return params;
+		}
+		String parts[] = body.split(",");
+		if (parts.length == 1) {
+			try {
+				params.size = Long.parseLong(parts[0]);
+			} catch (NumberFormatException e) {
+				params.origin = parts[0];
+			}
+		} 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.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;
+			}
+		}
+		return params;
+	}
+
+	public class ImageParams {
+		public long size = 0;
+		public int width = 0;
+		public int height = 0;
+		public String origin;
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/MucOptions.java b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
new file mode 100644
index 00000000..d7407cd5
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
@@ -0,0 +1,369 @@
+package eu.siacs.conversations.entities;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+import eu.siacs.conversations.crypto.PgpEngine;
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
+import android.annotation.SuppressLint;
+
+@SuppressLint("DefaultLocale")
+public class MucOptions {
+	public static final int ERROR_NO_ERROR = 0;
+	public static final int ERROR_NICK_IN_USE = 1;
+	public static final int ERROR_ROOM_NOT_FOUND = 2;
+	public static final int ERROR_PASSWORD_REQUIRED = 3;
+	public static final int ERROR_BANNED = 4;
+	public static final int ERROR_MEMBERS_ONLY = 5;
+
+	public static final int KICKED_FROM_ROOM = 9;
+
+	public static final String STATUS_CODE_BANNED = "301";
+	public static final String STATUS_CODE_KICKED = "307";
+
+	public interface OnRenameListener {
+		public void onRename(boolean success);
+	}
+
+	public class User {
+		public static final int ROLE_MODERATOR = 3;
+		public static final int ROLE_NONE = 0;
+		public static final int ROLE_PARTICIPANT = 2;
+		public static final int ROLE_VISITOR = 1;
+		public static final int AFFILIATION_ADMIN = 4;
+		public static final int AFFILIATION_OWNER = 3;
+		public static final int AFFILIATION_MEMBER = 2;
+		public static final int AFFILIATION_OUTCAST = 1;
+		public static final int AFFILIATION_NONE = 0;
+
+		private int role;
+		private int affiliation;
+		private String name;
+		private String jid;
+		private long pgpKeyId = 0;
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String user) {
+			this.name = user;
+		}
+
+		public void setJid(String jid) {
+			this.jid = jid;
+		}
+
+		public String getJid() {
+			return this.jid;
+		}
+
+		public int getRole() {
+			return this.role;
+		}
+
+		public void setRole(String role) {
+			role = role.toLowerCase();
+			if (role.equals("moderator")) {
+				this.role = ROLE_MODERATOR;
+			} else if (role.equals("participant")) {
+				this.role = ROLE_PARTICIPANT;
+			} else if (role.equals("visitor")) {
+				this.role = ROLE_VISITOR;
+			} else {
+				this.role = ROLE_NONE;
+			}
+		}
+
+		public int getAffiliation() {
+			return this.affiliation;
+		}
+
+		public void setAffiliation(String affiliation) {
+			if (affiliation.equalsIgnoreCase("admin")) {
+				this.affiliation = AFFILIATION_ADMIN;
+			} else if (affiliation.equalsIgnoreCase("owner")) {
+				this.affiliation = AFFILIATION_OWNER;
+			} else if (affiliation.equalsIgnoreCase("member")) {
+				this.affiliation = AFFILIATION_MEMBER;
+			} else if (affiliation.equalsIgnoreCase("outcast")) {
+				this.affiliation = AFFILIATION_OUTCAST;
+			} else {
+				this.affiliation = AFFILIATION_NONE;
+			}
+		}
+
+		public void setPgpKeyId(long id) {
+			this.pgpKeyId = id;
+		}
+
+		public long getPgpKeyId() {
+			return this.pgpKeyId;
+		}
+
+		public Contact getContact() {
+			return account.getRoster().getContactFromRoster(getJid());
+		}
+	}
+
+	private Account account;
+	private List<User> users = new CopyOnWriteArrayList<User>();
+	private Conversation conversation;
+	private boolean isOnline = false;
+	private int error = ERROR_ROOM_NOT_FOUND;
+	private OnRenameListener renameListener = null;
+	private boolean aboutToRename = false;
+	private User self = new User();
+	private String subject = null;
+	private String joinnick;
+	private String password = null;
+
+	public MucOptions(Conversation conversation) {
+		this.account = conversation.getAccount();
+		this.conversation = conversation;
+	}
+
+	public void deleteUser(String name) {
+		for (int i = 0; i < users.size(); ++i) {
+			if (users.get(i).getName().equals(name)) {
+				users.remove(i);
+				return;
+			}
+		}
+	}
+
+	public void addUser(User user) {
+		for (int i = 0; i < users.size(); ++i) {
+			if (users.get(i).getName().equals(user.getName())) {
+				users.set(i, user);
+				return;
+			}
+		}
+		users.add(user);
+	}
+
+	public void processPacket(PresencePacket packet, PgpEngine pgp) {
+		String[] fromParts = packet.getFrom().split("/", 2);
+		if (fromParts.length >= 2) {
+			String name = fromParts[1];
+			String type = packet.getAttribute("type");
+			if (type == null) {
+				User user = new User();
+				Element item = packet.findChild("x",
+						"http://jabber.org/protocol/muc#user")
+						.findChild("item");
+				user.setName(name);
+				user.setAffiliation(item.getAttribute("affiliation"));
+				user.setRole(item.getAttribute("role"));
+				user.setJid(item.getAttribute("jid"));
+				user.setName(name);
+				if (name.equals(this.joinnick)) {
+					this.isOnline = true;
+					this.error = ERROR_NO_ERROR;
+					self = user;
+					if (aboutToRename) {
+						if (renameListener != null) {
+							renameListener.onRename(true);
+						}
+						aboutToRename = false;
+					}
+				} else {
+					addUser(user);
+				}
+				if (pgp != null) {
+					Element x = packet.findChild("x", "jabber:x:signed");
+					if (x != null) {
+						Element status = packet.findChild("status");
+						String msg;
+						if (status != null) {
+							msg = status.getContent();
+						} else {
+							msg = "";
+						}
+						user.setPgpKeyId(pgp.fetchKeyId(account, msg,
+								x.getContent()));
+					}
+				}
+			} else if (type.equals("unavailable") && name.equals(this.joinnick)) {
+				Element x = packet.findChild("x",
+						"http://jabber.org/protocol/muc#user");
+				if (x != null) {
+					Element status = x.findChild("status");
+					if (status != null) {
+						String code = status.getAttribute("code");
+						if (STATUS_CODE_KICKED.equals(code)) {
+							this.isOnline = false;
+							this.error = KICKED_FROM_ROOM;
+						} else if (STATUS_CODE_BANNED.equals(code)) {
+							this.isOnline = false;
+							this.error = ERROR_BANNED;
+						}
+					}
+				}
+			} else if (type.equals("unavailable")) {
+				deleteUser(packet.getAttribute("from").split("/", 2)[1]);
+			} else if (type.equals("error")) {
+				Element error = packet.findChild("error");
+				if (error != null && error.hasChild("conflict")) {
+					if (aboutToRename) {
+						if (renameListener != null) {
+							renameListener.onRename(false);
+						}
+						aboutToRename = false;
+						this.setJoinNick(getActualNick());
+					} else {
+						this.error = ERROR_NICK_IN_USE;
+					}
+				} else if (error != null && error.hasChild("not-authorized")) {
+					this.error = ERROR_PASSWORD_REQUIRED;
+				} else if (error != null && error.hasChild("forbidden")) {
+					this.error = ERROR_BANNED;
+				} else if (error != null
+						&& error.hasChild("registration-required")) {
+					this.error = ERROR_MEMBERS_ONLY;
+				}
+			}
+		}
+	}
+
+	public List<User> getUsers() {
+		return this.users;
+	}
+
+	public String getProposedNick() {
+		String[] mucParts = conversation.getContactJid().split("/", 2);
+		if (conversation.getBookmark() != null
+				&& conversation.getBookmark().getNick() != null) {
+			return conversation.getBookmark().getNick();
+		} else {
+			if (mucParts.length == 2) {
+				return mucParts[1];
+			} else {
+				return account.getUsername();
+			}
+		}
+	}
+
+	public String getActualNick() {
+		if (this.self.getName() != null) {
+			return this.self.getName();
+		} else {
+			return this.getProposedNick();
+		}
+	}
+
+	public void setJoinNick(String nick) {
+		this.joinnick = nick;
+	}
+
+	public boolean online() {
+		return this.isOnline;
+	}
+
+	public int getError() {
+		return this.error;
+	}
+
+	public void setOnRenameListener(OnRenameListener listener) {
+		this.renameListener = listener;
+	}
+
+	public OnRenameListener getOnRenameListener() {
+		return this.renameListener;
+	}
+
+	public void setOffline() {
+		this.users.clear();
+		this.error = 0;
+		this.isOnline = false;
+	}
+
+	public User getSelf() {
+		return self;
+	}
+
+	public void setSubject(String content) {
+		this.subject = content;
+	}
+
+	public String getSubject() {
+		return this.subject;
+	}
+
+	public void flagAboutToRename() {
+		this.aboutToRename = true;
+	}
+
+	public long[] getPgpKeyIds() {
+		List<Long> ids = new ArrayList<Long>();
+		for (User user : getUsers()) {
+			if (user.getPgpKeyId() != 0) {
+				ids.add(user.getPgpKeyId());
+			}
+		}
+		long[] primitivLongArray = new long[ids.size()];
+		for (int i = 0; i < ids.size(); ++i) {
+			primitivLongArray[i] = ids.get(i);
+		}
+		return primitivLongArray;
+	}
+
+	public boolean pgpKeysInUse() {
+		for (User user : getUsers()) {
+			if (user.getPgpKeyId() != 0) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	public boolean everybodyHasKeys() {
+		for (User user : getUsers()) {
+			if (user.getPgpKeyId() == 0) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public String getJoinJid() {
+		return this.conversation.getContactJid().split("/", 2)[0] + "/"
+				+ this.joinnick;
+	}
+
+	public String getTrueCounterpart(String counterpart) {
+		for (User user : this.getUsers()) {
+			if (user.getName().equals(counterpart)) {
+				return user.getJid();
+			}
+		}
+		return null;
+	}
+
+	public String getPassword() {
+		this.password = conversation
+				.getAttribute(Conversation.ATTRIBUTE_MUC_PASSWORD);
+		if (this.password == null && conversation.getBookmark() != null
+				&& conversation.getBookmark().getPassword() != null) {
+			return conversation.getBookmark().getPassword();
+		} else {
+			return this.password;
+		}
+	}
+
+	public void setPassword(String password) {
+		if (conversation.getBookmark() != null) {
+			conversation.getBookmark().setPassword(password);
+		} else {
+			this.password = password;
+		}
+		conversation
+				.setAttribute(Conversation.ATTRIBUTE_MUC_PASSWORD, password);
+	}
+
+	public Conversation getConversation() {
+		return this.conversation;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/eu/siacs/conversations/entities/Presences.java b/src/main/java/eu/siacs/conversations/entities/Presences.java
new file mode 100644
index 00000000..b5899847
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Presences.java
@@ -0,0 +1,76 @@
+package eu.siacs.conversations.entities;
+
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.Map.Entry;
+
+import eu.siacs.conversations.xml.Element;
+
+public class Presences {
+
+	public static final int CHAT = -1;
+	public static final int ONLINE = 0;
+	public static final int AWAY = 1;
+	public static final int XA = 2;
+	public static final int DND = 3;
+	public static final int OFFLINE = 4;
+
+	private Hashtable<String, Integer> presences = new Hashtable<String, Integer>();
+
+	public Hashtable<String, Integer> getPresences() {
+		return this.presences;
+	}
+
+	public void updatePresence(String resource, int status) {
+		this.presences.put(resource, status);
+	}
+
+	public void removePresence(String resource) {
+		this.presences.remove(resource);
+	}
+
+	public void clearPresences() {
+		this.presences.clear();
+	}
+
+	public int getMostAvailableStatus() {
+		int status = OFFLINE;
+		Iterator<Entry<String, Integer>> it = presences.entrySet().iterator();
+		while (it.hasNext()) {
+			Entry<String, Integer> entry = it.next();
+			if (entry.getValue() < status)
+				status = entry.getValue();
+		}
+		return status;
+	}
+
+	public static int parseShow(Element show) {
+		if ((show == null) || (show.getContent() == null)) {
+			return Presences.ONLINE;
+		} else if (show.getContent().equals("away")) {
+			return Presences.AWAY;
+		} else if (show.getContent().equals("xa")) {
+			return Presences.XA;
+		} else if (show.getContent().equals("chat")) {
+			return Presences.CHAT;
+		} else if (show.getContent().equals("dnd")) {
+			return Presences.DND;
+		} else {
+			return Presences.OFFLINE;
+		}
+	}
+
+	public int size() {
+		return presences.size();
+	}
+
+	public String[] asStringArray() {
+		final String[] presencesArray = new String[presences.size()];
+		presences.keySet().toArray(presencesArray);
+		return presencesArray;
+	}
+
+	public boolean has(String presence) {
+		return presences.containsKey(presence);
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Roster.java b/src/main/java/eu/siacs/conversations/entities/Roster.java
new file mode 100644
index 00000000..3267b15a
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Roster.java
@@ -0,0 +1,83 @@
+package eu.siacs.conversations.entities;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class Roster {
+	Account account;
+	ConcurrentHashMap<String, Contact> contacts = new ConcurrentHashMap<String, Contact>();
+	private String version = null;
+
+	public Roster(Account account) {
+		this.account = account;
+	}
+
+	public Contact getContactFromRoster(String jid) {
+		if (jid == null) {
+			return null;
+		}
+		String cleanJid = jid.split("/", 2)[0];
+		Contact contact = contacts.get(cleanJid);
+		if (contact != null && contact.showInRoster()) {
+			return contact;
+		} else {
+			return null;
+		}
+	}
+
+	public Contact getContact(String jid) {
+		String cleanJid = jid.split("/", 2)[0].toLowerCase(Locale.getDefault());
+		if (contacts.containsKey(cleanJid)) {
+			return contacts.get(cleanJid);
+		} else {
+			Contact contact = new Contact(cleanJid);
+			contact.setAccount(account);
+			contacts.put(cleanJid, contact);
+			return contact;
+		}
+	}
+
+	public void clearPresences() {
+		for (Contact contact : getContacts()) {
+			contact.clearPresences();
+		}
+	}
+
+	public void markAllAsNotInRoster() {
+		for (Contact contact : getContacts()) {
+			contact.resetOption(Contact.Options.IN_ROSTER);
+		}
+	}
+
+	public void clearSystemAccounts() {
+		for (Contact contact : getContacts()) {
+			contact.setPhotoUri(null);
+			contact.setSystemName(null);
+			contact.setSystemAccount(null);
+		}
+	}
+
+	public List<Contact> getContacts() {
+		return new ArrayList<Contact>(this.contacts.values());
+	}
+
+	public void initContact(Contact contact) {
+		contact.setAccount(account);
+		contact.setOption(Contact.Options.IN_ROSTER);
+		contacts.put(contact.getJid(), contact);
+	}
+
+	public void setVersion(String version) {
+		this.version = version;
+	}
+
+	public String getVersion() {
+		return this.version;
+	}
+
+	public Account getAccount() {
+		return this.account;
+	}
+}