Initial commit

22 files changed, 1960 insertions, 0 deletions

diff --git a/vala-xmpp/src/module/xep/0027_pgp/flag.vala b/vala-xmpp/src/module/xep/0027_pgp/flag.vala
new file mode 100644
index 00000000..03844afa
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0027_pgp/flag.vala
@@ -0,0 +1,24 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Pgp {
+
+public class Flag : XmppStreamFlag {
+    public const string ID = "pgp";
+    public HashMap<string, string> key_ids = new HashMap<string, string>();
+
+    public string? get_key_id(string jid) { return key_ids[get_bare_jid(jid)]; }
+
+    public void set_key_id(string jid, string key) { key_ids[get_bare_jid(jid)] = key; }
+
+    public static Flag? get_flag(XmppStream stream) { return (Flag?) stream.get_flag(NS_URI, ID); }
+
+    public static bool has_flag(XmppStream stream) { return get_flag(stream) != null; }
+
+    public override string get_ns() { return NS_URI; }
+
+    public override string get_id() { return ID; }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0027_pgp/module.vala b/vala-xmpp/src/module/xep/0027_pgp/module.vala
new file mode 100644
index 00000000..fee6b9e4
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0027_pgp/module.vala
@@ -0,0 +1,206 @@
+using GPG;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Pgp {
+    private const string NS_URI = "jabber:x";
+    private const string NS_URI_ENCRYPTED = NS_URI + ":encrypted";
+    private const string NS_URI_SIGNED = NS_URI +  ":signed";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0027_current_pgp_usage";
+
+        public signal void received_jid_key_id(XmppStream stream, string jid, string key_id);
+
+        private static Object mutex = new Object();
+
+        private string? signed_status;
+        private string? own_key_id;
+
+        public Module() {
+            GPG.check_version();
+            signed_status = gpg_sign("");
+            if (signed_status != null) own_key_id = gpg_verify(signed_status, "");
+        }
+
+        public bool encrypt(Message.Stanza message, string key_id) {
+            string? enc_body = gpg_encrypt(message.body, new string[] {key_id, own_key_id});
+            if (enc_body != null) {
+                message.stanza.put_node(new StanzaNode.build("x", NS_URI_ENCRYPTED).add_self_xmlns().put_node(new StanzaNode.text(enc_body)));
+                message.body = "[This message is OpenPGP encrypted (see XEP-0027)]";
+                return true;
+            }
+            return false;
+        }
+
+        public string? get_cyphertext(Message.Stanza message) {
+            StanzaNode? x_node = message.stanza.get_subnode("x", NS_URI_ENCRYPTED);
+            return x_node == null ? null : x_node.get_string_content();
+        }
+
+        public override void attach(XmppStream stream) {
+            Presence.Module.require(stream);
+            Presence.Module.get_module(stream).received_presence.connect(on_received_presence);
+            Presence.Module.get_module(stream).pre_send_presence_stanza.connect(on_pre_send_presence_stanza);
+            Message.Module.require(stream);
+            Message.Module.get_module(stream).pre_received_message.connect(on_pre_received_message);
+            stream.add_flag(new Flag());
+        }
+
+        public override void detach(XmppStream stream) {
+            Presence.Module.get_module(stream).received_presence.disconnect(on_received_presence);
+            Presence.Module.get_module(stream).pre_send_presence_stanza.disconnect(on_pre_send_presence_stanza);
+            Message.Module.get_module(stream).pre_received_message.disconnect(on_pre_received_message);
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void on_received_presence(XmppStream stream, Presence.Stanza presence) {
+            StanzaNode x_node = presence.stanza.get_subnode("x", NS_URI_SIGNED);
+            if (x_node != null) {
+                string? sig = x_node.get_string_content();
+                if (sig != null) {
+                    string signed_data = presence.status == null ? "" : presence.status;
+                    string? key_id = gpg_verify(sig, signed_data);
+                    if (key_id != null) {
+                        Flag.get_flag(stream).set_key_id(presence.from, key_id);
+                        received_jid_key_id(stream, presence.from, key_id);
+                    }
+                }
+            }
+        }
+
+        private void on_pre_send_presence_stanza(XmppStream stream, Presence.Stanza presence) {
+            if (presence.type_ == Presence.Stanza.TYPE_AVAILABLE && signed_status != null) {
+                presence.stanza.put_node(new StanzaNode.build("x", NS_URI_SIGNED).add_self_xmlns().put_node(new StanzaNode.text(signed_status)));
+            }
+        }
+
+        private void on_pre_received_message(XmppStream stream, Message.Stanza message) {
+            string? encrypted = get_cyphertext(message);
+            if (encrypted != null) {
+                MessageFlag flag = new MessageFlag();
+                message.add_flag(flag);
+                string? decrypted = gpg_decrypt(encrypted);
+                if (decrypted != null) {
+                    flag.decrypted = true;
+                    message.body = decrypted;
+                }
+            }
+        }
+
+        private static string? gpg_encrypt(string plain, string[] key_ids) {
+            lock (mutex) {
+                GPG.Context context;
+                GPGError.ErrorCode e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                context.set_armor(true);
+
+                Key[] keys = new Key[key_ids.length];
+                for (int i = 0; i < key_ids.length; i++) {
+                    Key key;
+                    e = context.get_key(key_ids[i], out key, false); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                    keys[i] = key;
+                }
+
+                GPG.Data plain_data;
+                e = GPG.Data.create_from_memory(out plain_data, plain.data, false);
+                GPG.Data enc_data;
+                e = GPG.Data.create(out enc_data);
+                e = context.op_encrypt(keys, GPG.EncryptFlags.ALWAYS_TRUST, plain_data, enc_data);
+
+                string encr = get_string_from_data(enc_data);
+                int encryption_start = encr.index_of("\n\n") + 2;
+                return encr.substring(encryption_start, encr.length - "\n-----END PGP MESSAGE-----".length - encryption_start);
+            }
+        }
+
+        private static string? gpg_decrypt(string enc) {
+            lock (mutex) {
+                string armor = "-----BEGIN PGP MESSAGE-----\n\n" + enc + "\n-----END PGP MESSAGE-----";
+
+                GPG.Data enc_data;
+                GPGError.ErrorCode e = GPG.Data.create_from_memory(out enc_data, armor.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Data dec_data;
+                e = GPG.Data.create(out dec_data); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Context context;
+                e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                e = context.op_decrypt(enc_data, dec_data); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+
+                string plain = get_string_from_data(dec_data);
+                return plain;
+            }
+        }
+
+        private static string? gpg_verify(string sig, string signed_text) {
+            lock (mutex) {
+                string armor = "-----BEGIN PGP MESSAGE-----\n\n" + sig + "\n-----END PGP MESSAGE-----";
+
+                GPG.Data sig_data;
+                GPGError.ErrorCode e = GPG.Data.create_from_memory(out sig_data, armor.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Data plain_data;
+                e = GPG.Data.create(out plain_data); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Context context;
+                e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                e = context.op_verify(sig_data, null, plain_data); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.VerifyResult* verify_res = context.op_verify_result();
+                if (verify_res == null || verify_res.signatures == null) return null;
+                return verify_res.signatures.fpr;
+            }
+        }
+
+        private static string? gpg_sign(string status) {
+            lock (mutex) {
+                GPG.Data status_data;
+                GPGError.ErrorCode e = GPG.Data.create_from_memory(out status_data, status.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Data signed_data;
+                e = GPG.Data.create(out signed_data); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                GPG.Context context;
+                e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+                e = context.op_sign(status_data, signed_data, GPG.SigMode.CLEAR); if (e != GPGError.ErrorCode.NO_ERROR) return null;
+
+                string signed = get_string_from_data(signed_data);
+                int signature_start = signed.index_of("-----BEGIN PGP SIGNATURE-----");
+                signature_start = signed.index_of("\n\n", signature_start) + 2;
+                return signed.substring(signature_start, signed.length - "\n-----END PGP SIGNATURE-----".length - signature_start);
+            }
+        }
+
+        private static string get_string_from_data(GPG.Data data) {
+            data.seek(0);
+            uint8[] buf = new uint8[256];
+            ssize_t? len = null;
+            string res = "";
+            do {
+                len = data.read(buf);
+                if (len > 0) {
+                    string part = (string) buf;
+                    part = part.substring(0, (long) len);
+                    res += part;
+                }
+            } while (len > 0);
+            return res;
+        }
+    }
+
+    public class MessageFlag : Message.MessageFlag {
+        public const string id = "pgp";
+
+        public bool decrypted = false;
+
+        public static MessageFlag? get_flag(Message.Stanza message) {
+            return (MessageFlag) message.get_flag(NS_URI, id);
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return id; }
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0030_service_discovery/flag.vala b/vala-xmpp/src/module/xep/0030_service_discovery/flag.vala
new file mode 100644
index 00000000..5be9f2eb
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0030_service_discovery/flag.vala
@@ -0,0 +1,33 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ServiceDiscovery {
+
+public class Flag : XmppStreamFlag {
+    public const string ID = "service_discovery";
+
+    private HashMap<string, ArrayList<string>> entity_features = new HashMap<string, ArrayList<string>>();
+    public ArrayList<string> features = new ArrayList<string>();
+
+    public bool? has_entity_feature(string jid, string feature) {
+        if (!entity_features.has_key(jid)) return null;
+        return entity_features[jid].contains(feature);
+    }
+
+    public void set_entitiy_features(string jid, ArrayList<string> features) {
+        entity_features[jid] = features;
+    }
+
+    public void add_own_feature(string feature) { features.add(feature); }
+
+    public static Flag? get_flag(XmppStream stream) { return (Flag?) stream.get_flag(NS_URI, ID); }
+
+    public static bool has_flag(XmppStream stream) { return get_flag(stream) != null; }
+
+    public override string get_ns() { return NS_URI; }
+
+    public override string get_id() { return ID; }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0030_service_discovery/info_result.vala b/vala-xmpp/src/module/xep/0030_service_discovery/info_result.vala
new file mode 100644
index 00000000..7e0f0ea4
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0030_service_discovery/info_result.vala
@@ -0,0 +1,78 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ServiceDiscovery {
+
+public class InfoResult {
+    public Iq.Stanza iq { get; private set; }
+
+    public ArrayList<string> features {
+        owned get {
+            ArrayList<string> ret = new ArrayList<string>();
+            foreach (StanzaNode feature_node in iq.stanza.get_subnode("query", NS_URI_INFO).get_subnodes("feature", NS_URI_INFO)) {
+                ret.add(feature_node.get_attribute("var", NS_URI_INFO));
+            }
+            return ret;
+        }
+        set {
+            foreach (string feature in value) {
+                add_feature(feature);
+            }
+        }
+    }
+
+    public ArrayList<Identity> identities {
+        owned get {
+            ArrayList<Identity> ret = new ArrayList<Identity>();
+            foreach (StanzaNode feature_node in iq.stanza.get_subnode("query", NS_URI_INFO).get_subnodes("identity", NS_URI_INFO)) {
+                ret.add(new Identity(feature_node.get_attribute("category", NS_URI_INFO),
+                                        feature_node.get_attribute("type", NS_URI_INFO),
+                                        feature_node.get_attribute("name", NS_URI_INFO)));
+            }
+            return ret;
+        }
+        set {
+            foreach (Identity identity in value) {
+                add_identity(identity);
+            }
+        }
+    }
+
+    public void add_feature(string feature) {
+        iq.stanza.get_subnode("query", NS_URI_INFO).put_node(new StanzaNode.build("feature", NS_URI_INFO).put_attribute("var", feature));
+    }
+
+    public void add_identity(Identity identity) {
+        StanzaNode identity_node = new StanzaNode.build("identity", NS_URI_INFO)
+                .put_attribute("category", identity.category)
+                .put_attribute("type", identity.type_);
+        if (identity.name != null) {
+            identity_node.put_attribute("name", identity.name);
+        }
+        iq.stanza.get_subnode("query", NS_URI_INFO).put_node(identity_node);
+    }
+
+    private InfoResult.from_iq(Iq.Stanza iq) {
+        this.iq = iq;
+    }
+
+    public InfoResult(Iq.Stanza iq_request) {
+        iq = new Iq.Stanza.result(iq_request);
+        iq.to = iq_request.from;
+        iq.stanza.put_node(new StanzaNode.build("query", NS_URI_INFO).add_self_xmlns());
+    }
+
+    public static InfoResult? create_from_iq(Iq.Stanza iq) {
+        if (iq.is_error()) return null;
+        StanzaNode query_node = iq.stanza.get_subnode("query", NS_URI_INFO);
+        if (query_node == null) return null;
+        StanzaNode feature_node = query_node.get_subnode("feature", NS_URI_INFO);
+        if (feature_node == null) return null;
+        StanzaNode identity_node = query_node.get_subnode("identity", NS_URI_INFO);
+        if (identity_node == null) return null;
+        return new ServiceDiscovery.InfoResult.from_iq(iq);
+    }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0030_service_discovery/items_result.vala b/vala-xmpp/src/module/xep/0030_service_discovery/items_result.vala
new file mode 100644
index 00000000..2c29c320
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0030_service_discovery/items_result.vala
@@ -0,0 +1,27 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ServiceDiscovery {
+
+public class ItemsResult {
+    public Iq.Stanza iq { get; private set; }
+
+    public ArrayList<Item> items {
+        owned get {
+            ArrayList<Item> ret = new ArrayList<Item>();
+            foreach (StanzaNode feature_node in iq.stanza.get_subnode("query", NS_URI_ITEMS).get_subnodes("identity", NS_URI_INFO)) {
+                ret.add(new Item(feature_node.get_attribute("jid", NS_URI_ITEMS),
+                                        feature_node.get_attribute("name", NS_URI_ITEMS),
+                                        feature_node.get_attribute("node", NS_URI_ITEMS)));
+            }
+            return ret;
+        }
+    }
+
+    public ItemsResult.from_iq(Iq.Stanza iq) {
+        this.iq = iq;
+    }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0030_service_discovery/module.vala b/vala-xmpp/src/module/xep/0030_service_discovery/module.vala
new file mode 100644
index 00000000..109da897
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0030_service_discovery/module.vala
@@ -0,0 +1,137 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ServiceDiscovery {
+    private const string NS_URI = "http://jabber.org/protocol/disco";
+    public const string NS_URI_INFO = NS_URI + "#info";
+    public const string NS_URI_ITEMS = NS_URI + "#items";
+
+    public class Module : XmppStreamModule, Iq.Handler {
+        public const string ID = "0030_service_discovery_module";
+
+        public ArrayList<Identity> identities = new ArrayList<Identity>();
+
+        public Module.with_identity(string category, string type, string? name = null) {
+            add_identity(category, type, name);
+        }
+
+        public void add_feature(XmppStream stream, string feature) {
+            Flag.get_flag(stream).add_own_feature(feature);
+        }
+
+        public void add_feature_notify(XmppStream stream, string feature) {
+            add_feature(stream, feature + "+notify");
+        }
+
+        public void add_identity(string category, string type, string? name = null) {
+            identities.add(new Identity(category, type, name));
+        }
+
+        public void request_info(XmppStream stream, string jid, InfoResponseListener response_listener) {
+            Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("query", NS_URI_INFO).add_self_xmlns());
+            iq.to = jid;
+            Iq.Module.get_module(stream).send_iq(stream, iq, new IqInfoResponseListener(response_listener));
+        }
+
+        private class IqInfoResponseListener : Iq.ResponseListener, Object {
+            InfoResponseListener response_listener;
+            public IqInfoResponseListener(InfoResponseListener response_listener) {
+                this.response_listener = response_listener;
+            }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                InfoResult? result = InfoResult.create_from_iq(iq);
+                if (result != null) {
+                    Flag.get_flag(stream).set_entitiy_features(iq.from, result.features);
+                    response_listener.on_result(stream, result);
+                } else {
+                    response_listener.on_error(stream, iq);
+                }
+            }
+        }
+
+        public void request_items(XmppStream stream, string jid, ItemsResponseListener response_listener) {
+            Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("query", NS_URI_ITEMS).add_self_xmlns());
+            iq.to = jid;
+            Iq.Module.get_module(stream).send_iq(stream, iq, new IqItemsResponseListener(response_listener));
+        }
+
+        private class IqItemsResponseListener : Iq.ResponseListener, Object {
+            ItemsResponseListener response_listener;
+            public IqItemsResponseListener(ItemsResponseListener response_listener) { this.response_listener = response_listener; }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                //response_listener.on_result(stream, new ServiceDiscoveryItemsResult.from_iq(iq));
+            }
+        }
+
+        public void on_iq_get(XmppStream stream, Iq.Stanza iq) {
+            StanzaNode? query_node = iq.stanza.get_subnode("query", NS_URI_INFO);
+            if (query_node != null) {
+                send_query_result(stream, iq);
+            }
+        }
+
+        public void on_iq_set(XmppStream stream, Iq.Stanza iq) { }
+
+        public override void attach(XmppStream stream) {
+            Iq.Module.require(stream);
+            Iq.Module.get_module(stream).register_for_namespace(NS_URI_INFO, this);
+            stream.add_flag(new Flag());
+            add_feature(stream, NS_URI_INFO);
+        }
+
+        public override void detach(XmppStream stream) { }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new ServiceDiscovery.Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void send_query_result(XmppStream stream, Iq.Stanza iq_request) {
+            InfoResult query_result = new ServiceDiscovery.InfoResult(iq_request);
+            query_result.features = Flag.get_flag(stream).features;
+            query_result.identities = identities;
+            Iq.Module.get_module(stream).send_iq(stream, query_result.iq, null);
+        }
+    }
+
+    public class Identity {
+        public string category { get; set; }
+        public string type_ { get; set; }
+        public string? name { get; set; }
+
+        public Identity(string category, string type, string? name = null) {
+            this.category = category;
+            this.type_ = type;
+            this.name = name;
+        }
+    }
+
+    public class Item {
+        public string jid;
+        public string? name;
+        public string? node;
+
+        public Item(string jid, string? name = null, string? node = null) {
+            this.jid = jid;
+            this.name = name;
+            this.node = node;
+        }
+    }
+
+    public interface InfoResponseListener : Object {
+        public abstract void on_result(XmppStream stream, InfoResult query_result);
+        public void on_error(XmppStream stream, Iq.Stanza iq) { }
+    }
+
+    public interface ItemsResponseListener : Object {
+        public abstract void on_result(XmppStream stream, ItemsResult query_result);
+        public void on_error(XmppStream stream, Iq.Stanza iq) { }
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0045_muc/flag.vala b/vala-xmpp/src/module/xep/0045_muc/flag.vala
new file mode 100644
index 00000000..6c1ef508
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0045_muc/flag.vala
@@ -0,0 +1,80 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Muc {
+
+public class Flag : XmppStreamFlag {
+    public const string ID = "muc";
+
+    private HashMap<string, MucEnterListener> enter_listeners = new HashMap<string, MucEnterListener>();
+    private HashMap<string, string> enter_ids = new HashMap<string, string>();
+    private HashMap<string, string> own_nicks = new HashMap<string, string>();
+    private HashMap<string, string> subjects = new HashMap<string, string>();
+    private HashMap<string, string> subjects_by = new HashMap<string, string>();
+    private HashMap<string, string> occupant_real_jids = new HashMap<string, string>();
+    private HashMap<string, string> occupant_affiliation = new HashMap<string, string>();
+    private HashMap<string, string> occupant_role = new HashMap<string, string>();
+
+    public string? get_real_jid(string full_jid) { return occupant_real_jids[full_jid]; }
+
+    public void set_real_jid(string full_jid, string real_jid) { occupant_real_jids[full_jid] = real_jid; }
+
+    public string? get_occupant_affiliation(string full_jid) { return occupant_affiliation[full_jid]; }
+
+    public void set_occupant_affiliation(string full_jid, string affiliation) { occupant_affiliation[full_jid] = affiliation; }
+
+    public string? get_occupant_role(string full_jid) { return occupant_role[full_jid]; }
+
+    public void set_occupant_role(string full_jid, string role) { occupant_role[full_jid] = role; }
+
+    public string? get_muc_nick(string bare_jid) { return own_nicks[bare_jid]; }
+
+    public string? get_enter_id(string bare_jid) { return enter_ids[bare_jid]; }
+
+    public MucEnterListener? get_enter_listener(string bare_jid) { return enter_listeners[bare_jid]; }
+
+    public bool is_muc(string jid) { return own_nicks[jid] != null; }
+
+    public bool is_occupant(string jid) {
+        string bare_jid = get_bare_jid(jid);
+        return own_nicks.has_key(bare_jid) || enter_ids.has_key(bare_jid);
+    }
+
+    public bool is_muc_enter_outstanding() { return enter_ids.size != 0; }
+
+    public string? get_muc_subject(string bare_jid) { return subjects[bare_jid]; }
+
+    public void set_muc_subject(string full_jid, string subject) {
+        string bare_jid = get_bare_jid(full_jid);
+        subjects[bare_jid] = subject;
+        subjects_by[bare_jid] = full_jid;
+    }
+
+    public void start_muc_enter(string bare_jid, string presence_id, MucEnterListener listener) {
+        enter_listeners[bare_jid] = listener;
+        enter_ids[bare_jid] = presence_id;
+    }
+
+    public void finish_muc_enter(string bare_jid, string? nick = null) {
+        if (nick != null) own_nicks[bare_jid] = nick;
+        enter_listeners.unset(bare_jid);
+        enter_ids.unset(bare_jid);
+    }
+
+    public void remove_occupant_info(string full_jid) {
+        occupant_real_jids.unset(full_jid);
+        occupant_affiliation.unset(full_jid);
+        occupant_role.unset(full_jid);
+    }
+
+    public static Flag? get_flag(XmppStream stream) { return (Flag?) stream.get_flag(NS_URI, ID); }
+
+    public static bool has_flag(XmppStream stream) { return get_flag(stream) != null; }
+
+    public override string get_ns() { return NS_URI; }
+
+    public override string get_id() { return ID; }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0045_muc/module.vala b/vala-xmpp/src/module/xep/0045_muc/module.vala
new file mode 100644
index 00000000..f9ed9539
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0045_muc/module.vala
@@ -0,0 +1,244 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Muc {
+
+private const string NS_URI = "http://jabber.org/protocol/muc";
+private const string NS_URI_ADMIN = NS_URI + "#admin";
+private const string NS_URI_USER = NS_URI + "#user";
+
+public const string AFFILIATION_ADMIN = "admin";
+public const string AFFILIATION_MEMBER = "member";
+public const string AFFILIATION_NONE = "none";
+public const string AFFILIATION_OUTCAST = "outcast";
+public const string AFFILIATION_OWNER = "owner";
+
+public const string ROLE_MODERATOR = "moderator";
+public const string ROLE_NONE = "none";
+public const string ROLE_PARTICIPANT = "participant";
+public const string ROLE_VISITOR = "visitor";
+
+public enum MucEnterError {
+    PASSWORD_REQUIRED,
+    NOT_IN_MEMBER_LIST,
+    BANNED,
+    NICK_CONFLICT,
+    OCCUPANT_LIMIT_REACHED,
+    ROOM_DOESNT_EXIST
+}
+
+public class Module : XmppStreamModule {
+    public const string ID = "0045_muc_module";
+
+    public signal void received_occupant_affiliation(XmppStream stream, string jid, string? affiliation);
+    public signal void received_occupant_jid(XmppStream stream, string jid, string? real_jid);
+    public signal void received_occupant_role(XmppStream stream, string jid, string? role);
+    public signal void subject_set(XmppStream stream, string subject, string jid);
+
+    public void enter(XmppStream stream, string bare_jid, string nick, string? password, MucEnterListener listener) {
+        Presence.Stanza presence = new Presence.Stanza();
+        presence.to = bare_jid + "/" + nick;
+        StanzaNode x_node = new StanzaNode.build("x", NS_URI).add_self_xmlns();
+        if (password != null) {
+            x_node.put_node(new StanzaNode.build("password", NS_URI).put_node(new StanzaNode.text(password)));
+        }
+        presence.stanza.put_node(x_node);
+
+        Muc.Flag.get_flag(stream).start_muc_enter(bare_jid, presence.id, listener);
+
+        Presence.Module.get_module(stream).send_presence(stream, presence);
+    }
+
+    public void exit(XmppStream stream, string jid) {
+        string nick = Flag.get_flag(stream).get_muc_nick(jid);
+        Presence.Stanza presence = new Presence.Stanza();
+        presence.to = jid + "/" + nick;
+        presence.type_ = Presence.Stanza.TYPE_UNAVAILABLE;
+        Presence.Module.get_module(stream).send_presence(stream, presence);
+    }
+
+    public void change_subject(XmppStream stream, string jid, string subject) {
+        Message.Stanza message = new Message.Stanza();
+        message.to = jid;
+        message.type_ = Message.Stanza.TYPE_GROUPCHAT;
+        message.stanza.put_node((new StanzaNode.build("subject")).put_node(new StanzaNode.text(subject)));
+        Message.Module.get_module(stream).send_message(stream, message);
+    }
+
+    public void change_nick(XmppStream stream, string jid, string new_nick) {
+        Presence.Stanza presence = new Presence.Stanza();
+        presence.to = jid + "/" + new_nick;
+        Presence.Module.get_module(stream).send_presence(stream, presence);
+    }
+
+    public void kick(XmppStream stream, string jid, string nick) {
+        change_role(stream, jid, nick, "none");
+    }
+
+    public override void attach(XmppStream stream) {
+        stream.add_flag(new Muc.Flag());
+        Message.Module.require(stream);
+        Message.Module.get_module(stream).received_message.connect(on_received_message);
+        Presence.Module.require(stream);
+        Presence.Module.get_module(stream).received_presence.connect(on_received_presence);
+        Presence.Module.get_module(stream).received_available.connect(on_received_available);
+        Presence.Module.get_module(stream).received_unavailable.connect(on_received_unavailable);
+        if (ServiceDiscovery.Module.get_module(stream) != null) {
+            ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+        }
+    }
+
+    public override void detach(XmppStream stream) {
+        Message.Module.get_module(stream).received_message.disconnect(on_received_message);
+        Presence.Module.get_module(stream).received_presence.disconnect(on_received_presence);
+        Presence.Module.get_module(stream).received_available.disconnect(on_received_available);
+        Presence.Module.get_module(stream).received_unavailable.disconnect(on_received_unavailable);
+    }
+
+    public static Module? get_module(XmppStream stream) {
+        return (Module?) stream.get_module(NS_URI, ID);
+    }
+
+    public static void require(XmppStream stream) {
+        Presence.Module.require(stream);
+        if (get_module(stream) == null) stream.add_module(new Muc.Module());
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return ID; }
+
+    private void change_role(XmppStream stream, string jid, string nick, string new_role) {
+        StanzaNode query = new StanzaNode.build("query", NS_URI_ADMIN).add_self_xmlns();
+        query.put_node(new StanzaNode.build("item", NS_URI_ADMIN).put_attribute("nick", nick, NS_URI_ADMIN).put_attribute("role", new_role, NS_URI_ADMIN));
+        Iq.Stanza iq = new Iq.Stanza.set(query);
+        iq.to = jid;
+        Iq.Module.get_module(stream).send_iq(stream, iq);
+    }
+
+    private void on_received_message(XmppStream stream, Message.Stanza message) {
+        if (message.type_ == Message.Stanza.TYPE_GROUPCHAT) {
+            StanzaNode? subject_node = message.stanza.get_subnode("subject");
+            if (subject_node != null) {
+                string subject = subject_node.get_string_content();
+                Muc.Flag.get_flag(stream).set_muc_subject(message.from, subject);
+                subject_set(stream, subject, message.from);
+            }
+        }
+    }
+
+    private void on_received_presence(XmppStream stream, Presence.Stanza presence) {
+        Flag flag = Flag.get_flag(stream);
+        if (presence.is_error() && flag.is_muc_enter_outstanding() && flag.is_occupant(presence.from)) {
+            string bare_jid = get_bare_jid(presence.from);
+            ErrorStanza? error_stanza = presence.get_error();
+            if (flag.get_enter_id(bare_jid) == error_stanza.original_id) {
+                MucEnterListener listener = flag.get_enter_listener(bare_jid);
+                if (error_stanza.condition == ErrorStanza.CONDITION_NOT_AUTHORIZED && ErrorStanza.TYPE_AUTH == error_stanza.type_) {
+                    listener.on_error(MucEnterError.PASSWORD_REQUIRED);
+                } else if (ErrorStanza.CONDITION_REGISTRATION_REQUIRED == error_stanza.condition && ErrorStanza.TYPE_AUTH == error_stanza.type_) {
+                    listener.on_error(MucEnterError.NOT_IN_MEMBER_LIST);
+                } else if (ErrorStanza.CONDITION_FORBIDDEN == error_stanza.condition && ErrorStanza.TYPE_AUTH == error_stanza.type_) {
+                    listener.on_error(MucEnterError.BANNED);
+                } else if (ErrorStanza.CONDITION_CONFLICT == error_stanza.condition && ErrorStanza.TYPE_CANCEL == error_stanza.type_) {
+                    listener.on_error(MucEnterError.NICK_CONFLICT);
+                } else if (ErrorStanza.CONDITION_SERVICE_UNAVAILABLE == error_stanza.condition && ErrorStanza.TYPE_WAIT == error_stanza.type_) {
+                    listener.on_error(MucEnterError.OCCUPANT_LIMIT_REACHED);
+                } else if (ErrorStanza.CONDITION_ITEM_NOT_FOUND == error_stanza.condition && ErrorStanza.TYPE_CANCEL == error_stanza.type_) {
+                    listener.on_error(MucEnterError.ROOM_DOESNT_EXIST);
+                }
+                flag.finish_muc_enter(bare_jid);
+            }
+        }
+    }
+
+    private void on_received_available(XmppStream stream, Presence.Stanza presence) {
+        Flag flag = Flag.get_flag(stream);
+        if (flag.is_occupant(presence.from)) {
+            StanzaNode? x_node = presence.stanza.get_subnode("x", NS_URI_USER);
+            if (x_node != null) {
+                ArrayList<int> status_codes = get_status_codes(x_node);
+                if (status_codes.contains(StatusCode.SELF_PRESENCE)) {
+                    string bare_jid = get_bare_jid(presence.from);
+                    flag.get_enter_listener(bare_jid).on_success();
+                    flag.finish_muc_enter(bare_jid, get_resource_part(presence.from));
+                }
+                string? affiliation = x_node["item", "affiliation"].val;
+                if (affiliation != null) {
+                    received_occupant_affiliation(stream, presence.from, affiliation);
+                }
+                string? jid = x_node["item", "jid"].val;
+                if (jid != null) {
+                    flag.set_real_jid(presence.from, jid);
+                    received_occupant_jid(stream, presence.from, jid);
+                }
+                string? role = x_node["item", "role"].val;
+                if (role != null) {
+                    received_occupant_role(stream, presence.from, role);
+                }
+            }
+        }
+    }
+
+    private void on_received_unavailable(XmppStream stream, string jid) {
+        Flag flag = Flag.get_flag(stream);
+        if (flag.is_occupant(jid)) {
+            flag.remove_occupant_info(jid);
+        }
+    }
+
+    private ArrayList<int> get_status_codes(StanzaNode x_node) {
+        ArrayList<int> ret = new ArrayList<int>();
+        foreach (StanzaNode status_node in x_node.get_subnodes("status", NS_URI_USER)) {
+            ret.add(int.parse(status_node.get_attribute("code")));
+        }
+        return ret;
+    }
+}
+
+public enum StatusCode {
+    /** Inform user that any occupant is allowed to see the user's full JID */
+    JID_VISIBLE = 100,
+    /** Inform user that his or her affiliation changed while not in the room */
+    AFFILIATION_CHANGED = 101,
+    /** Inform occupants that room now shows unavailable members */
+    SHOWS_UNAVIABLE_MEMBERS = 102,
+    /** Inform occupants that room now does not show unavailable members */
+    SHOWS_UNAVIABLE_MEMBERS_NOT = 103,
+    /** Inform occupants that a non-privacy-related room configuration change has occurred */
+    CONFIG_CHANGE_NON_PRIVACY = 104,
+    /** Inform user that presence refers to itself */
+    SELF_PRESENCE = 110,
+    /** Inform occupants that room logging is now enabled */
+    LOGGING_ENABLED = 170,
+    /** Inform occupants that room logging is now disabled */
+    LOGGING_DISABLED = 171,
+    /** Inform occupants that the room is now non-anonymous */
+    NON_ANONYMOUS = 172,
+    /** Inform occupants that the room is now semi-anonymous */
+    SEMI_ANONYMOUS = 173,
+    /** Inform user that a new room has been created */
+    NEW_ROOM_CREATED = 201,
+    /** Inform user that service has assigned or modified occupant's roomnick */
+    MODIFIED_NICK = 210,
+    /** Inform user that he or she has been banned from the room */
+    BANNED = 301,
+    /** Inform all occupants of new room nickname */
+    ROOM_NICKNAME = 303,
+    /** Inform user that he or she has been kicked from the room */
+    KICKED = 307,
+    /** Inform user that he or she is being removed from the room */
+    REMOVED_AFFILIATION_CHANGE = 321,
+    /** Inform user that he or she is being removed from the room because the room has been changed to members-only
+    and the user is not a member */
+    REMOVED_MEMBERS_ONLY = 322,
+    /** Inform user that he or she is being removed from the room because the MUC service is being shut down */
+    REMOVED_SHUTDOWN = 332
+}
+
+public interface MucEnterListener : Object {
+    public abstract void on_success();
+    public abstract void on_error(MucEnterError error);
+}
+
+}
diff --git a/vala-xmpp/src/module/xep/0048_bookmarks/conference.vala b/vala-xmpp/src/module/xep/0048_bookmarks/conference.vala
new file mode 100644
index 00000000..818ab3d0
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0048_bookmarks/conference.vala
@@ -0,0 +1,74 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Bookmarks {
+
+public class Conference {
+
+    public const string ATTRIBUTE_AUTOJOIN = "autojoin";
+    public const string ATTRIBUTE_JID = "jid";
+    public const string ATTRIBUTE_NAME = "name";
+
+    public const string NODE_NICK = "nick";
+    public const string NODE_PASSWORD = "password";
+
+    public StanzaNode stanza_node;
+
+    public bool autojoin {
+        get {
+            string? attr = stanza_node.get_attribute(ATTRIBUTE_AUTOJOIN);
+            return attr == "true" || attr == "1"; // "1" isn't standard, but it's used
+        }
+        set { stanza_node.set_attribute(ATTRIBUTE_AUTOJOIN, value.to_string()); }
+    }
+
+    public string jid {
+        get { return stanza_node.get_attribute(ATTRIBUTE_JID); }
+        set { stanza_node.set_attribute(ATTRIBUTE_JID, value); }
+    }
+
+    public string? name {
+        get { return stanza_node.get_attribute(ATTRIBUTE_NAME); }
+        set { stanza_node.set_attribute(ATTRIBUTE_NAME, value); }
+    }
+
+    public string? nick {
+        get {
+            StanzaNode? nick_node = stanza_node.get_subnode(NODE_NICK);
+            return nick_node == null? null : nick_node.get_string_content();
+        }
+        set {
+            StanzaNode? nick_node = stanza_node.get_subnode(NODE_NICK);
+            if (nick_node == null) {
+                nick_node = new StanzaNode.build(NODE_NICK, NS_URI);
+                stanza_node.put_node(nick_node);
+            }
+            nick_node.put_node(new StanzaNode.text(value));
+        }
+    }
+
+    public string? password {
+        get {
+            StanzaNode? password_node = stanza_node.get_subnode(NODE_PASSWORD);
+            return password_node == null? null : password_node.get_string_content();
+        }
+        set {
+            StanzaNode? password_node = stanza_node.get_subnode(NODE_PASSWORD);
+            if (password_node == null) {
+                password_node = new StanzaNode.build(NODE_PASSWORD);
+                stanza_node.put_node(password_node);
+            }
+            password_node.put_node(new StanzaNode.text(value));
+        }
+    }
+
+    public Conference.from_stanza_node(StanzaNode stanza_node) {
+        this.stanza_node = stanza_node;
+    }
+
+    public Conference(string jid) {
+        this.stanza_node = new StanzaNode.build("conference", NS_URI);
+        this.jid = jid;
+    }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0048_bookmarks/module.vala b/vala-xmpp/src/module/xep/0048_bookmarks/module.vala
new file mode 100644
index 00000000..d7767208
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0048_bookmarks/module.vala
@@ -0,0 +1,137 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Bookmarks {
+private const string NS_URI = "storage:bookmarks";
+
+public class Module : XmppStreamModule {
+    public const string ID = "0048_bookmarks_module";
+
+    public signal void conferences_updated(XmppStream stream, ArrayList<Conference> conferences);
+
+    public void get_conferences(XmppStream stream, ConferencesRetrieveResponseListener response_listener) {
+        StanzaNode get_node = new StanzaNode.build("storage", NS_URI).add_self_xmlns();
+        PrivateXmlStorage.Module.get_module(stream).retrieve(stream, get_node, new GetConferences(response_listener));
+    }
+
+    public void set_conferences(XmppStream stream, ArrayList<Conference> conferences) {
+        StanzaNode storage_node = (new StanzaNode.build("storage", NS_URI)).add_self_xmlns();
+        foreach (Conference conference in conferences) {
+            storage_node.put_node(conference.stanza_node);
+        }
+        PrivateXmlStorage.Module.get_module(stream).store(stream, storage_node, new StoreResponseListenerImpl(conferences));
+    }
+
+    private class StoreResponseListenerImpl : PrivateXmlStorage.StoreResponseListener, Object {
+        ArrayList<Conference> conferences;
+        public StoreResponseListenerImpl(ArrayList<Conference> conferences) {
+            this.conferences = conferences;
+        }
+        public void on_success(XmppStream stream) {
+            Module.get_module(stream).conferences_updated(stream, conferences);
+        }
+    }
+
+    public void add_conference(XmppStream stream, Conference add) {
+        get_conferences(stream, new AddConference(add));
+    }
+
+    public void replace_conference(XmppStream stream, Conference was, Conference modified) {
+        get_conferences(stream, new ModifyConference(was, modified));
+    }
+
+    public void remove_conference(XmppStream stream, Conference conference) {
+        get_conferences(stream, new RemoveConference(conference));
+    }
+
+    private class GetConferences : PrivateXmlStorage.RetrieveResponseListener, Object {
+        ConferencesRetrieveResponseListener response_listener;
+
+        public GetConferences(ConferencesRetrieveResponseListener response_listener) {
+            this.response_listener = response_listener;
+        }
+
+        public void on_result(XmppStream stream, StanzaNode node) {
+            response_listener.on_result(stream, get_conferences_from_stanza(node));
+        }
+    }
+
+    private class AddConference : ConferencesRetrieveResponseListener, Object {
+        private Conference conference;
+        public AddConference(Conference conference) {
+            this.conference = conference;
+        }
+        public void on_result(XmppStream stream, ArrayList<Conference> conferences) {
+            conferences.add(conference);
+            Module.get_module(stream).set_conferences(stream, conferences);
+        }
+    }
+
+    private class ModifyConference : ConferencesRetrieveResponseListener, Object {
+        private Conference was;
+        private Conference modified;
+        public ModifyConference(Conference was, Conference modified) {
+            this.was = was;
+            this.modified = modified;
+        }
+        public void on_result(XmppStream stream, ArrayList<Conference> conferences) {
+            foreach (Conference conference in conferences) {
+                if (conference.name == was.name && conference.jid == was.jid && conference.autojoin == was.autojoin) {
+                    conference.autojoin = modified.autojoin;
+                    conference.name = modified.name;
+                    conference.jid = modified.jid;
+                    break;
+                }
+            }
+            Module.get_module(stream).set_conferences(stream, conferences);
+        }
+    }
+
+    private class RemoveConference : ConferencesRetrieveResponseListener, Object {
+        private Conference remove;
+        public RemoveConference(Conference remove) {
+            this.remove = remove;
+        }
+        public void on_result(XmppStream stream, ArrayList<Conference> conferences) {
+            Conference? rem = null;
+            foreach (Conference conference in conferences) {
+                if (conference.name == remove.name && conference.jid == remove.jid && conference.autojoin == remove.autojoin) {
+                    rem = conference;
+                }
+            }
+            if (rem != null) conferences.remove(rem);
+            Module.get_module(stream).set_conferences(stream, conferences);
+        }
+    }
+
+    public override void attach(XmppStream stream) { }
+
+    public override void detach(XmppStream stream) { }
+
+    public static Module? get_module(XmppStream stream) {
+        return (Module?) stream.get_module(NS_URI, ID);
+    }
+
+    public static void require(XmppStream stream) {
+        if (get_module(stream) == null) stderr.printf("");
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return ID; }
+
+    private static ArrayList<Conference> get_conferences_from_stanza(StanzaNode node) {
+        ArrayList<Conference> conferences = new ArrayList<Conference>();
+        ArrayList<StanzaNode> conferenceNodes = node.get_subnode("storage", NS_URI).get_subnodes("conference", NS_URI);
+        foreach (StanzaNode conferenceNode in conferenceNodes) {
+            conferences.add(new Conference.from_stanza_node(conferenceNode));
+        }
+        return conferences;
+    }
+}
+
+public interface ConferencesRetrieveResponseListener : Object {
+    public abstract void on_result(XmppStream stream, ArrayList<Conference> conferences);
+}
+
+}
diff --git a/vala-xmpp/src/module/xep/0049_private_xml_storage.vala b/vala-xmpp/src/module/xep/0049_private_xml_storage.vala
new file mode 100644
index 00000000..c57acdde
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0049_private_xml_storage.vala
@@ -0,0 +1,65 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.PrivateXmlStorage {
+    private const string NS_URI = "jabber:iq:private";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0049_private_xml_storage";
+
+        public void store(XmppStream stream, StanzaNode node, StoreResponseListener listener) {
+            StanzaNode queryNode = new StanzaNode.build("query", NS_URI).add_self_xmlns().put_node(node);
+            Iq.Stanza iq = new Iq.Stanza.set(queryNode);
+            Iq.Module.get_module(stream).send_iq(stream, iq, new IqStoreResponse(listener));
+        }
+
+        private class IqStoreResponse : Iq.ResponseListener, Object {
+            StoreResponseListener listener;
+            public IqStoreResponse(StoreResponseListener listener) {
+                this.listener = listener;
+            }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                listener.on_success(stream);
+            }
+        }
+
+        public void retrieve(XmppStream stream, StanzaNode node, RetrieveResponseListener responseListener) {
+            StanzaNode queryNode = new StanzaNode.build("query", NS_URI).add_self_xmlns().put_node(node);
+            Iq.Stanza iq = new Iq.Stanza.get(queryNode);
+            Iq.Module.get_module(stream).send_iq(stream, iq, new IqRetrieveResponse(responseListener));
+        }
+
+        private class IqRetrieveResponse : Iq.ResponseListener, Object {
+            RetrieveResponseListener response_listener;
+            public IqRetrieveResponse(RetrieveResponseListener response_listener) { this.response_listener = response_listener; }
+
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                response_listener.on_result(stream, iq.stanza.get_subnode("query", NS_URI));
+            }
+        }
+
+        public override void attach(XmppStream stream) {
+            Iq.Module.require(stream);
+        }
+
+        public override void detach(XmppStream stream) { }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new PrivateXmlStorage.Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+    }
+
+    public interface StoreResponseListener : Object {
+        public abstract void on_success(XmppStream stream);
+    }
+
+    public interface RetrieveResponseListener : Object {
+        public abstract void on_result(XmppStream stream, StanzaNode stanzaNode);
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0054_vcard/module.vala b/vala-xmpp/src/module/xep/0054_vcard/module.vala
new file mode 100644
index 00000000..58b71d2c
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0054_vcard/module.vala
@@ -0,0 +1,87 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.VCard {
+private const string NS_URI = "vcard-temp";
+private const string NS_URI_UPDATE = NS_URI + ":x:update";
+
+public class Module : XmppStreamModule {
+    public const string ID = "0027_current_pgp_usage";
+
+    public signal void received_avatar(XmppStream stream, string jid, string id);
+
+    private PixbufStorage storage;
+
+    public Module(PixbufStorage storage) {
+        this.storage = storage;
+    }
+
+    public override void attach(XmppStream stream) {
+        Iq.Module.require(stream);
+        Presence.Module.require(stream);
+        Presence.Module.get_module(stream).received_presence.connect(on_received_presence);
+    }
+
+    public override void detach(XmppStream stream) {
+        Presence.Module.get_module(stream).received_presence.disconnect(on_received_presence);
+    }
+
+    public static Module? get_module(XmppStream stream) {
+        return (Module?) stream.get_module(NS_URI, ID);
+    }
+
+    public static void require(XmppStream stream) {
+        if (get_module(stream) == null) stderr.printf("VCardModule required but not attached!\n"); ;
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return ID; }
+
+    private void on_received_presence(XmppStream stream, Presence.Stanza presence) {
+        StanzaNode? update_node = presence.stanza.get_subnode("x", NS_URI_UPDATE);
+        if (update_node == null) return;
+        StanzaNode? photo_node = update_node.get_subnode("photo", NS_URI_UPDATE);
+        if (photo_node == null) return;
+        string? sha1 = photo_node.get_string_content();
+        if (sha1 == null) return;
+        if (storage.has_image(sha1)) {
+            if (Muc.Flag.get_flag(stream).is_occupant(presence.from)) {
+                received_avatar(stream, presence.from, sha1);
+            } else {
+                received_avatar(stream, get_bare_jid(presence.from), sha1);
+            }
+        } else {
+            Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("vCard", NS_URI).add_self_xmlns());
+            if (Muc.Flag.get_flag(stream).is_occupant(presence.from)) {
+                iq.to = presence.from;
+            } else {
+                iq.to = get_bare_jid(presence.from);
+            }
+            Iq.Module.get_module(stream).send_iq(stream, iq, new IqResponseListenerImpl(this, storage, sha1));
+        }
+    }
+
+    private class IqResponseListenerImpl : Iq.ResponseListener, Object {
+        Module outer;
+        PixbufStorage storage;
+        string id;
+        public IqResponseListenerImpl(Module outer, PixbufStorage storage, string id) {
+            this.outer = outer;
+            this.id = id;
+            this.storage = storage;
+        }
+        public void on_result(XmppStream stream, Iq.Stanza iq) {
+            if (iq.is_error()) return;
+            StanzaNode? vcard_node = iq.stanza.get_subnode("vCard", NS_URI);
+            if (vcard_node == null) return;
+            StanzaNode? photo_node = vcard_node.get_subnode("PHOTO", NS_URI);
+            if (photo_node == null) return;
+            StanzaNode? binary_node = photo_node.get_subnode("BINVAL", NS_URI);
+            if (binary_node == null) return;
+            string? content = binary_node.get_string_content();
+            if (content == null) return;
+            storage.store(id, Base64.decode(content));
+            outer.received_avatar(stream, iq.from, id);
+        }
+    }
+}
+}
diff --git a/vala-xmpp/src/module/xep/0060_pubsub.vala b/vala-xmpp/src/module/xep/0060_pubsub.vala
new file mode 100644
index 00000000..3f96e7a1
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0060_pubsub.vala
@@ -0,0 +1,107 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Pubsub {
+    private const string NS_URI = "http://jabber.org/protocol/pubsub";
+    private const string NS_URI_EVENT = NS_URI + "#event";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0060_pubsub_module";
+
+        private HashMap<string, EventListener> event_listeners = new HashMap<string, EventListener>();
+
+        public void add_filtered_notification(XmppStream stream, string node, EventListener listener) {
+            ServiceDiscovery.Module.get_module(stream).add_feature_notify(stream, node);
+            event_listeners[node] = listener;
+        }
+
+        public void request(XmppStream stream, string jid, string node, RequestResponseListener listener) { // TODO multiple nodes gehen auch
+            Iq.Stanza a = new Iq.Stanza.get(new StanzaNode.build("pubsub", NS_URI).add_self_xmlns().put_node(new StanzaNode.build("items", NS_URI).put_attribute("node", node)));
+            a.to = jid;
+            Iq.Module.get_module(stream).send_iq(stream, a, new IqRequestResponseListener(listener));
+        }
+
+        private class IqRequestResponseListener : Iq.ResponseListener, Object {
+            RequestResponseListener response_listener;
+            public IqRequestResponseListener(RequestResponseListener response_listener) { this.response_listener = response_listener; }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                StanzaNode event_node = iq.stanza.get_subnode("pubsub", NS_URI); if (event_node == null) return;
+                StanzaNode items_node = event_node.get_subnode("items", NS_URI); if (items_node == null) return;
+                StanzaNode item_node = items_node.get_subnode("item", NS_URI); if (item_node == null) return;
+                string node = items_node.get_attribute("node", NS_URI);
+                string id = item_node.get_attribute("id", NS_URI);
+                response_listener.on_result(stream, iq.from, id, item_node.sub_nodes[0]);
+            }
+        }
+
+        public void publish(XmppStream stream, string? jid, string node_id, string node, string item_id, StanzaNode content) {
+            StanzaNode pubsub_node = new StanzaNode.build("pubsub", NS_URI).add_self_xmlns();
+            StanzaNode publish_node = new StanzaNode.build("publish", NS_URI).put_attribute("node", node_id);
+            pubsub_node.put_node(publish_node);
+            StanzaNode items_node = new StanzaNode.build("item", NS_URI).put_attribute("id", item_id);
+            items_node.put_node(content);
+            publish_node.put_node(items_node);
+            Iq.Stanza iq = new Iq.Stanza.set(pubsub_node);
+            Iq.Module.get_module(stream).send_iq(stream, iq, null);
+        }
+
+        private class IqPublishResponseListener : Iq.ResponseListener, Object {
+            PublishResponseListener response_listener;
+            public IqPublishResponseListener(PublishResponseListener response_listener) { this.response_listener = response_listener; }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                if (iq.is_error()) {
+                    response_listener.on_error(stream);
+                } else {
+                    response_listener.on_success(stream);
+                }
+            }
+        }
+
+        public override void attach(XmppStream stream) {
+            Iq.Module.require(stream);
+            Message.Module.require(stream);
+            ServiceDiscovery.Module.require(stream);
+            Message.Module.get_module(stream).received_message.connect(on_received_message);
+        }
+
+        public override void detach(XmppStream stream) {
+            Message.Module.get_module(stream).received_message.disconnect(on_received_message);
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void on_received_message(XmppStream stream, Message.Stanza message) {
+            StanzaNode event_node = message.stanza.get_subnode("event", NS_URI_EVENT); if (event_node == null) return;
+            StanzaNode items_node = event_node.get_subnode("items", NS_URI_EVENT); if (items_node == null) return;
+            StanzaNode item_node = items_node.get_subnode("item", NS_URI_EVENT); if (item_node == null) return;
+            string node = items_node.get_attribute("node", NS_URI_EVENT);
+            string id = item_node.get_attribute("id", NS_URI_EVENT);
+            if (event_listeners.has_key(node)) {
+                event_listeners[node].on_result(stream, message.from, id, item_node.sub_nodes[0]);
+            }
+        }
+    }
+
+    public interface RequestResponseListener : Object {
+        public abstract void on_result(XmppStream stream, string jid, string id, StanzaNode node);
+    }
+
+    public interface EventListener : Object {
+        public abstract void on_result(XmppStream stream, string jid, string id, StanzaNode node);
+    }
+
+    public interface PublishResponseListener : Object {
+        public abstract void on_success(XmppStream stream);
+        public abstract void on_error(XmppStream stream);
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0084_user_avatars.vala b/vala-xmpp/src/module/xep/0084_user_avatars.vala
new file mode 100644
index 00000000..13d19674
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0084_user_avatars.vala
@@ -0,0 +1,93 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.UserAvatars {
+    private const string NS_URI = "urn:xmpp:avatar";
+    private const string NS_URI_DATA = NS_URI + ":data";
+    private const string NS_URI_METADATA = NS_URI + ":metadata";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0084_user_avatars";
+
+        public signal void received_avatar(XmppStream stream, string jid, string id);
+
+        private PixbufStorage storage;
+
+        public Module(PixbufStorage storage) {
+            this.storage = storage;
+        }
+
+        public void publish_png(XmppStream stream, uint8[] image, int width, int height) {
+            string sha1 = Checksum.compute_for_data(ChecksumType.SHA1, image);
+            StanzaNode data_node = new StanzaNode.build("data", NS_URI_DATA).add_self_xmlns()
+                    .put_node(new StanzaNode.text(Base64.encode(image)));
+            Pubsub.Module.get_module(stream).publish(stream, null, NS_URI_DATA, NS_URI_DATA, sha1, data_node);
+
+            StanzaNode metadata_node = new StanzaNode.build("metadata", NS_URI_METADATA).add_self_xmlns();
+            StanzaNode info_node = new StanzaNode.build("info", NS_URI_METADATA)
+                .put_attribute("bytes", image.length.to_string())
+                .put_attribute("id", sha1)
+                .put_attribute("width", width.to_string())
+                .put_attribute("height", height.to_string())
+                .put_attribute("type", "image/png");
+            metadata_node.put_node(info_node);
+            Pubsub.Module.get_module(stream).publish(stream, null, NS_URI_METADATA, NS_URI_METADATA, sha1, metadata_node);
+        }
+
+        private class PublishResponseListenerImpl : Pubsub.PublishResponseListener, Object {
+            PublishResponseListener listener;
+            PublishResponseListenerImpl other;
+            public PublishResponseListenerImpl(PublishResponseListener listener, PublishResponseListenerImpl other) {
+                this.listener = listener;
+                this.other = other;
+            }
+            public void on_success(XmppStream stream) { listener.on_success(stream); }
+            public void on_error(XmppStream stream) { listener.on_error(stream); }
+        }
+
+        public override void attach(XmppStream stream) {
+            Pubsub.Module.require(stream);
+            Pubsub.Module.get_module(stream).add_filtered_notification(stream, NS_URI_METADATA, new PubsubEventListenerImpl(storage));
+        }
+
+        public override void detach(XmppStream stream) { }
+
+        class PubsubEventListenerImpl : Pubsub.EventListener, Object {
+            PixbufStorage storage;
+            public PubsubEventListenerImpl(PixbufStorage storage) { this.storage = storage; }
+            public void on_result(XmppStream stream, string jid, string id, StanzaNode node) {
+                StanzaNode info_node = node.get_subnode("info", NS_URI_METADATA);
+                if (info_node.get_attribute("type") != "image/png") return;
+                if (storage.has_image(id)) {
+                    Module.get_module(stream).received_avatar(stream, jid, id);
+                } else {
+                    Pubsub.Module.get_module(stream).request(stream, jid, NS_URI_DATA, new PubsubRequestResponseListenerImpl(storage));
+                }
+            }
+        }
+
+        class PubsubRequestResponseListenerImpl : Pubsub.RequestResponseListener, Object {
+            PixbufStorage storage;
+            public PubsubRequestResponseListenerImpl(PixbufStorage storage) { this.storage = storage; }
+            public void on_result(XmppStream stream, string jid, string id, StanzaNode node) {
+                storage.store(id, Base64.decode(node.get_string_content()));
+                Module.get_module(stream).received_avatar(stream, jid, id);
+            }
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stderr.printf("UserAvatarsModule required but not attached!\n");
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+    }
+
+    public interface PublishResponseListener : Object {
+        public abstract void on_success(XmppStream stream);
+        public abstract void on_error(XmppStream stream);
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0085_chat_state_notifications.vala b/vala-xmpp/src/module/xep/0085_chat_state_notifications.vala
new file mode 100644
index 00000000..cefc7a18
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0085_chat_state_notifications.vala
@@ -0,0 +1,74 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ChatStateNotifications {
+private const string NS_URI = "http://jabber.org/protocol/chatstates";
+
+public const string STATE_ACTIVE = "active";
+public const string STATE_INACTIVE = "inactive";
+public const string STATE_GONE = "gone";
+public const string STATE_COMPOSING = "composing";
+public const string STATE_PAUSED = "paused";
+
+private const string[] STATES = {STATE_ACTIVE, STATE_INACTIVE, STATE_GONE, STATE_COMPOSING, STATE_PAUSED};
+
+public class Module : XmppStreamModule {
+    public const string ID = "0085_chat_state_notifications";
+
+    public signal void chat_state_received(XmppStream stream, string jid, string state);
+
+    /**
+    * "A message stanza that does not contain standard messaging content [...] SHOULD be a state other than <active/>" (0085, 5.6)
+    */
+    public void send_state(XmppStream stream, string jid, string state) {
+        Message.Stanza message = new Message.Stanza();
+        message.to = jid;
+        message.type_ = Message.Stanza.TYPE_CHAT;
+        message.stanza.put_node(new StanzaNode.build(state, NS_URI).add_self_xmlns());
+        Message.Module.get_module(stream).send_message(stream, message);
+    }
+
+    public override void attach(XmppStream stream) {
+        ServiceDiscovery.Module.require(stream);
+        ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+        Message.Module.get_module(stream).pre_send_message.connect(on_pre_send_message);
+        Message.Module.get_module(stream).received_message.connect(on_received_message);
+    }
+
+    public override void detach(XmppStream stream) {
+        Message.Module.get_module(stream).pre_send_message.disconnect(on_pre_send_message);
+        Message.Module.get_module(stream).received_message.disconnect(on_received_message);
+    }
+
+    public static Module? get_module(XmppStream stream) {
+        return (Module?) stream.get_module(NS_URI, ID);
+    }
+
+    public static void require(XmppStream stream) {
+        if (get_module(stream) == null) stream.add_module(new Module()); ;
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return ID; }
+
+    private void on_pre_send_message(XmppStream stream, Message.Stanza message) {
+        if (message.body == null) return;
+        if (message.type_ != Message.Stanza.TYPE_CHAT) return;
+        message.stanza.put_node(new StanzaNode.build(STATE_ACTIVE, NS_URI).add_self_xmlns());
+    }
+
+    private void on_received_message(XmppStream stream, Message.Stanza message) {
+        if (!message.is_error()) {
+            ArrayList<StanzaNode> nodes = message.stanza.get_all_subnodes();
+            foreach (StanzaNode node in nodes) {
+                if (node.ns_uri == NS_URI &&
+                    node.name in STATES) {
+                    chat_state_received(stream, message.from, node.name);
+                }
+            }
+        }
+    }
+}
+
+}
diff --git a/vala-xmpp/src/module/xep/0115_entitiy_capabilities.vala b/vala-xmpp/src/module/xep/0115_entitiy_capabilities.vala
new file mode 100644
index 00000000..472eb9bd
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0115_entitiy_capabilities.vala
@@ -0,0 +1,125 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.EntityCapabilities {
+    private const string NS_URI = "http://jabber.org/protocol/caps";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0115_entity_capabilities";
+
+        private string own_ver_hash;
+        private Storage storage;
+
+        public Module(Storage storage) {
+            this.storage = storage;
+        }
+
+        private string get_own_hash(XmppStream stream) {
+            if (own_ver_hash == null) {
+                own_ver_hash = compute_hash(ServiceDiscovery.Module.get_module(stream).identities, ServiceDiscovery.Flag.get_flag(stream).features);
+            }
+            return own_ver_hash;
+        }
+
+        public override void attach(XmppStream stream) {
+            ServiceDiscovery.Module.require(stream);
+            Presence.Module.require(stream);
+            Presence.Module.get_module(stream).pre_send_presence_stanza.connect(on_pre_send_presence_stanza);
+            Presence.Module.get_module(stream).received_presence.connect(on_received_presence);
+            ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+        }
+
+        public override void detach(XmppStream stream) {
+            Presence.Module.get_module(stream).pre_send_presence_stanza.disconnect(on_pre_send_presence_stanza);
+            Presence.Module.get_module(stream).received_presence.disconnect(on_received_presence);
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stderr.printf("EntityCapabilitiesModule required but not attached!\n");
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void on_pre_send_presence_stanza(XmppStream stream, Presence.Stanza presence) {
+            if (presence.type_ == Presence.Stanza.TYPE_AVAILABLE) {
+                presence.stanza.put_node(new StanzaNode.build("c", NS_URI).add_self_xmlns()
+                    .put_attribute("hash", "sha-1")
+                    .put_attribute("node", "http://dino-im.org")
+                    .put_attribute("ver", get_own_hash(stream)));
+            }
+        }
+
+        private void on_received_presence(XmppStream stream, Presence.Stanza presence) {
+            StanzaNode? c_node = presence.stanza.get_subnode("c", NS_URI);
+            if (c_node != null) {
+                string ver_attribute = c_node.get_attribute("ver", NS_URI);
+                ArrayList<string> capabilities = storage.get_features(ver_attribute);
+                if (capabilities.size == 0) {
+                    ServiceDiscovery.Module.get_module(stream)
+                        .request_info(stream, presence.from, new ServiceDiscoveryInfoResponseListenerImpl(storage, ver_attribute));
+                } else {
+                    ServiceDiscovery.Flag.get_flag(stream).set_entitiy_features(presence.from, capabilities);
+                }
+            }
+        }
+
+        private class ServiceDiscoveryInfoResponseListenerImpl : ServiceDiscovery.InfoResponseListener, Object {
+            private Storage storage;
+            private string entity;
+
+            public ServiceDiscoveryInfoResponseListenerImpl(Storage storage, string entity) {
+                this.storage = storage;
+                this.entity = entity;
+            }
+            public void on_result(XmppStream stream, ServiceDiscovery.InfoResult query_result) {
+                if (compute_hash(query_result.identities, query_result.features) == entity) {
+                    storage.store_features(entity, query_result.features);
+                }
+            }
+        }
+
+        private static string compute_hash(ArrayList<ServiceDiscovery.Identity> identities, ArrayList<string> features) {
+            identities.sort(compare_identities);
+            features.sort();
+
+            string s = "";
+            foreach (ServiceDiscovery.Identity identity in identities) {
+                string s_identity = identity.category + "/" + identity.type_ + "//";
+                if (identity.name != null) s_identity += identity.name;
+                s_identity += "<";
+                s += s_identity;
+            }
+            foreach (string feature in features) {
+                s += feature + "<";
+            }
+
+            Checksum c = new Checksum(ChecksumType.SHA1);
+            c.update(s.data, -1);
+            size_t size = 20;
+            uint8[] buf = new uint8[size];
+            c.get_digest(buf, ref size);
+
+            return Base64.encode(buf);
+        }
+
+        private static int compare_identities(ServiceDiscovery.Identity a, ServiceDiscovery.Identity b) {
+            int category_comp = a.category.collate(b.category);
+            if (category_comp != 0) return category_comp;
+            int type_comp = a.type_.collate(b.type_);
+            if (type_comp != 0) return type_comp;
+            // TODO lang
+            return 0;
+        }
+    }
+
+    public interface Storage : Object {
+        public abstract void store_features(string entitiy, ArrayList<string> capabilities);
+        public abstract ArrayList<string> get_features(string entitiy);
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0184_message_delivery_receipts.vala b/vala-xmpp/src/module/xep/0184_message_delivery_receipts.vala
new file mode 100644
index 00000000..489592fa
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0184_message_delivery_receipts.vala
@@ -0,0 +1,62 @@
+using Gdk;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.MessageDeliveryReceipts {
+    private const string NS_URI = "urn:xmpp:receipts";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0184_message_delivery_receipts";
+
+        public signal void receipt_received(XmppStream stream, string jid, string id);
+
+        public override void attach(XmppStream stream) {
+            ServiceDiscovery.Module.require(stream);
+            Message.Module.require(stream);
+
+            ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+            Message.Module.get_module(stream).received_message.connect(received_message);
+            Message.Module.get_module(stream).pre_send_message.connect(pre_send_message);
+        }
+
+        public override void detach(XmppStream stream) {
+            Message.Module.get_module(stream).received_message.disconnect(received_message);
+            Message.Module.get_module(stream).pre_send_message.disconnect(pre_send_message);
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void received_message(XmppStream stream, Message.Stanza message) {
+            StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
+            if (received_node != null) {
+                receipt_received(stream, message.from, received_node.get_attribute("id", NS_URI));
+            } else if (message.stanza.get_subnode("request", NS_URI) != null) {
+                send_received(stream, message);
+            }
+        }
+
+        private void send_received(XmppStream stream, Message.Stanza message) {
+            Message.Stanza received_message = new Message.Stanza();
+            received_message.to = message.from;
+            received_message.stanza.put_node(new StanzaNode.build("received", NS_URI).add_self_xmlns().put_attribute("id", message.id));
+            Message.Module.get_module(stream).send_message(stream, received_message);
+        }
+
+        private void pre_send_message(XmppStream stream, Message.Stanza message) {
+            StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
+            if (received_node != null) return;
+            if (message.body == null) return;
+            if (message.type_ == Message.Stanza.TYPE_GROUPCHAT) return;
+            message.stanza.put_node(new StanzaNode.build("request", NS_URI).add_self_xmlns());
+        }
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0199_ping.vala b/vala-xmpp/src/module/xep/0199_ping.vala
new file mode 100644
index 00000000..82da1d23
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0199_ping.vala
@@ -0,0 +1,56 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.Ping {
+    private const string NS_URI = "urn:xmpp:ping";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0199_ping";
+
+        public void send_ping(XmppStream stream, string jid, ResponseListener? listener = null) {
+            Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("ping", NS_URI).add_self_xmlns());
+            iq.to = jid;
+            Iq.Module.get_module(stream).send_iq(stream, iq, listener == null? null : new IqResponseListenerImpl(listener));
+        }
+
+        private class IqResponseListenerImpl : Iq.ResponseListener, Object {
+            ResponseListener listener;
+            public IqResponseListenerImpl(ResponseListener listener) {
+                this.listener = listener;
+            }
+            public void on_result(XmppStream stream, Iq.Stanza iq) {
+                listener.on_result(stream);
+            }
+        }
+
+        public override void attach(XmppStream stream) {
+            Iq.Module.require(stream);
+            Iq.Module.get_module(stream).register_for_namespace(NS_URI, new IqHandlerImpl());
+        }
+
+        public override void detach(XmppStream stream) { }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private class IqHandlerImpl : Iq.Handler, Object {
+            public void on_iq_get(XmppStream stream, Iq.Stanza iq) {
+                Iq.Module.get_module(stream).send_iq(stream, new Iq.Stanza.result(iq));
+            }
+            public void on_iq_set(XmppStream stream, Iq.Stanza iq) { }
+        }
+    }
+
+    public interface ResponseListener : Object {
+        public abstract void on_result(XmppStream stream);
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0203_delayed_delivery.vala b/vala-xmpp/src/module/xep/0203_delayed_delivery.vala
new file mode 100644
index 00000000..528b0017
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0203_delayed_delivery.vala
@@ -0,0 +1,70 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.DelayedDelivery {
+    private const string NS_URI = "urn:xmpp:delay";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0203_delayed_delivery";
+
+        public static DateTime? get_send_time(Message.Stanza message) {
+            StanzaNode? delay_node = message.stanza.get_subnode("delay", NS_URI);
+            if (delay_node != null) {
+                string time = delay_node.get_attribute("stamp");
+                return new DateTime.utc(int.parse(time.substring(0, 4)),
+                    int.parse(time.substring(5, 2)),
+                    int.parse(time.substring(8, 2)),
+                    int.parse(time.substring(11, 2)),
+                    int.parse(time.substring(14, 2)),
+                    int.parse(time.substring(17, 2)));
+            } else {
+                return null;
+            }
+        }
+
+        public override void attach(XmppStream stream) {
+            Message.Module.get_module(stream).pre_received_message.connect(on_pre_received_message);
+        }
+
+        public override void detach(XmppStream stream) { }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void on_pre_received_message(XmppStream stream, Message.Stanza message) {
+            StanzaNode? delay_node = message.stanza.get_subnode("delay", NS_URI);
+            if (delay_node != null) {
+                string time = delay_node.get_attribute("stamp");
+                DateTime datetime = new DateTime.utc(int.parse(time.substring(0, 4)),
+                    int.parse(time.substring(5, 2)),
+                    int.parse(time.substring(8, 2)),
+                    int.parse(time.substring(11, 2)),
+                    int.parse(time.substring(14, 2)),
+                    int.parse(time.substring(17, 2)));
+                message.add_flag(new MessageFlag(datetime));
+            }
+        }
+    }
+
+    public class MessageFlag : Message.MessageFlag {
+        public const string ID = "delayed_delivery";
+
+        DateTime datetime;
+
+        public MessageFlag(DateTime datetime) {
+            this.datetime = datetime;
+        }
+
+        public static MessageFlag? get_flag(Message.Stanza message) { return (MessageFlag) message.get_flag(NS_URI, ID); }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0280_message_carbons.vala b/vala-xmpp/src/module/xep/0280_message_carbons.vala
new file mode 100644
index 00000000..18b2ecdf
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0280_message_carbons.vala
@@ -0,0 +1,91 @@
+using Xmpp.Core;
+
+namespace Xmpp.Xep.MessageCarbons {
+    private const string NS_URI = "urn:xmpp:carbons:2";
+
+    public class Module : XmppStreamModule {
+        public const string ID = "0280_message_carbons_module";
+
+        public void enable(XmppStream stream) {
+            Iq.Stanza iq = new Iq.Stanza.set(new StanzaNode.build("enable", NS_URI).add_self_xmlns());
+            Iq.Module.get_module(stream).send_iq(stream, iq);
+        }
+
+        public void disable(XmppStream stream) {
+            Iq.Stanza iq = new Iq.Stanza.set(new StanzaNode.build("disable", NS_URI).add_self_xmlns());
+            Iq.Module.get_module(stream).send_iq(stream, iq);
+        }
+
+        public override void attach(XmppStream stream) {
+            Bind.Module.require(stream);
+            Iq.Module.require(stream);
+            Message.Module.require(stream);
+            ServiceDiscovery.Module.require(stream);
+
+            stream.stream_negotiated.connect(enable);
+            Message.Module.get_module(stream).pre_received_message.connect(pre_received_message);
+            ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+        }
+
+        public override void detach(XmppStream stream) {
+            stream.stream_negotiated.disconnect(enable);
+            Message.Module.get_module(stream).pre_received_message.disconnect(pre_received_message);
+        }
+
+        public static Module? get_module(XmppStream stream) {
+            return (Module?) stream.get_module(NS_URI, ID);
+        }
+
+        public static void require(XmppStream stream) {
+            if (get_module(stream) == null) stream.add_module(new Module());
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return ID; }
+
+        private void pre_received_message(XmppStream stream, Message.Stanza message) {
+            StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
+            StanzaNode? sent_node = received_node == null ? message.stanza.get_subnode("sent", NS_URI) : null;
+            StanzaNode? carbons_node = received_node != null ? received_node : sent_node;
+            if (carbons_node != null) {
+                StanzaNode? forwarded_node = carbons_node.get_subnode("forwarded", "urn:xmpp:forward:0");
+                if (forwarded_node != null) {
+                    StanzaNode? message_node = forwarded_node.get_subnode("message", Message.NS_URI);
+                    string? from_attribute = message_node.get_attribute("from", Message.NS_URI);
+                    // The security model assumed by this document is that all of the resources for a single user are in the same trust boundary.
+                    // Any forwarded copies received by a Carbons-enabled client MUST be from that user's bare JID; any copies that do not meet this requirement MUST be ignored.
+                    if (from_attribute != null && from_attribute == get_bare_jid(Bind.Flag.get_flag(stream).my_jid)) {
+                        if (received_node != null) {
+                            message.add_flag(new MessageFlag(MessageFlag.TYPE_RECEIVED));
+                        } else if (sent_node != null) {
+                            message.add_flag(new MessageFlag(MessageFlag.TYPE_SENT));
+                        }
+                        message.stanza = message_node;
+                        message.rerun_parsing = true;
+                    }
+                    message.stanza = message_node;
+                    message.rerun_parsing = true;
+                }
+            }
+        }
+    }
+
+    public class MessageFlag : Message.MessageFlag {
+        public const string id = "message_carbons";
+
+        public const string TYPE_RECEIVED = "received";
+        public const string TYPE_SENT = "sent";
+        private string type_;
+
+        public MessageFlag(string type) {
+            this.type_ = type;
+        }
+
+        public static MessageFlag? get_flag(Message.Stanza message) {
+            return (MessageFlag) message.get_flag(NS_URI, id);
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return id; }
+    }
+}
diff --git a/vala-xmpp/src/module/xep/0333_chat_markers.vala b/vala-xmpp/src/module/xep/0333_chat_markers.vala
new file mode 100644
index 00000000..0dc0e637
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0333_chat_markers.vala
@@ -0,0 +1,81 @@
+using Gee;
+
+using Xmpp.Core;
+
+namespace Xmpp.Xep.ChatMarkers {
+private const string NS_URI = "urn:xmpp:chat-markers:0";
+
+public const string MARKER_RECEIVED = "received";
+public const string MARKER_DISPLAYED = "displayed";
+public const string MARKER_ACKNOWLEDGED = "acknowledged";
+
+private const string[] MARKERS = {MARKER_RECEIVED, MARKER_DISPLAYED, MARKER_ACKNOWLEDGED};
+
+public class Module : XmppStreamModule {
+    public const string ID = "0333_chat_markers";
+
+    public signal void marker_received(XmppStream stream, string jid, string marker, string id);
+
+    public void send_marker(XmppStream stream, string jid, string message_id, string type_, string marker) {
+        Message.Stanza received_message = new Message.Stanza();
+        received_message.to = jid;
+        received_message.type_ = type_;
+        received_message.stanza.put_node(new StanzaNode.build(marker, NS_URI).add_self_xmlns().put_attribute("id", message_id));
+        Message.Module.get_module(stream).send_message(stream, received_message);
+    }
+
+    public static bool requests_marking(Message.Stanza message) {
+        StanzaNode markable_node = message.stanza.get_subnode("markable", NS_URI);
+        return markable_node != null;
+    }
+
+    public override void attach(XmppStream stream) {
+        Iq.Module.require(stream);
+        Message.Module.require(stream);
+        ServiceDiscovery.Module.require(stream);
+
+        ServiceDiscovery.Module.get_module(stream).add_feature(stream, NS_URI);
+        Message.Module.get_module(stream).pre_send_message.connect(on_pre_send_message);
+        Message.Module.get_module(stream).received_message.connect(on_received_message);
+    }
+
+    public override void detach(XmppStream stream) {
+        Message.Module.get_module(stream).pre_send_message.disconnect(on_pre_send_message);
+        Message.Module.get_module(stream).received_message.disconnect(on_received_message);
+    }
+
+    public static Module? get_module(XmppStream stream) {
+        return (Module?) stream.get_module(NS_URI, ID);
+    }
+
+    public static void require(XmppStream stream) {
+        if (get_module(stream) == null) stream.add_module(new ChatMarkers.Module());
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return ID; }
+
+    private void on_received_message(XmppStream stream, Message.Stanza message) {
+        if (message.type_ != Message.Stanza.TYPE_CHAT) return;
+        if (requests_marking(message)) {
+            send_marker(stream, message.from, message.id, message.type_, MARKER_RECEIVED);
+            return;
+        }
+        ArrayList<StanzaNode> nodes = message.stanza.get_all_subnodes();
+        foreach (StanzaNode node in nodes) {
+            if (node.ns_uri == NS_URI && node.name in MARKERS) {
+                marker_received(stream, message.from, node.name, node.get_attribute("id", NS_URI));
+            }
+        }
+    }
+
+    private void on_pre_send_message(XmppStream stream, Message.Stanza message) {
+        StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
+        if (received_node != null) return;
+        if (message.body == null) return;
+        if (message.type_ != Message.Stanza.TYPE_CHAT) return;
+        message.stanza.put_node(new StanzaNode.build("markable", NS_URI).add_self_xmlns());
+    }
+}
+
+}
diff --git a/vala-xmpp/src/module/xep/pixbuf_storage.vala b/vala-xmpp/src/module/xep/pixbuf_storage.vala
new file mode 100644
index 00000000..0caf4924
--- /dev/null
+++ b/vala-xmpp/src/module/xep/pixbuf_storage.vala
@@ -0,0 +1,9 @@
+using Gdk;
+
+namespace Xmpp.Xep {
+public interface PixbufStorage : Object {
+    public abstract void store(string id, uint8[] data);
+    public abstract bool has_image(string id);
+    public abstract Pixbuf? get_image(string id);
+}
+}
\ No newline at end of file