Enable encryption in MUCs

3 files changed, 113 insertions, 47 deletions

diff --git a/plugins/omemo/src/encrypt_state.vala b/plugins/omemo/src/encrypt_state.vala
index 80ae40d7..fd72faf4 100644
--- a/plugins/omemo/src/encrypt_state.vala
+++ b/plugins/omemo/src/encrypt_state.vala
@@ -7,7 +7,7 @@ public class EncryptState {
     public int other_lost { get; internal set; }
     public int other_unknown { get; internal set; }
     public int other_failure { get; internal set; }
-    public bool other_list { get; internal set; }
+    public int other_waiting_lists { get; internal set; }
 
     public int own_devices { get; internal set; }
     public int own_success { get; internal set; }
@@ -17,8 +17,8 @@ public class EncryptState {
     public bool own_list { get; internal set; }
 
     public string to_string() {
-        return @"EncryptState (encrypted=$encrypted, other=(devices=$other_devices, success=$other_success, lost=$other_lost, unknown=$other_unknown, failure=$other_failure, list=$other_list), own=(devices=$own_devices, success=$own_success, lost=$own_lost, unknown=$own_unknown, failure=$own_failure, list=$own_list))";
+        return @"EncryptState (encrypted=$encrypted, other=(devices=$other_devices, success=$other_success, lost=$other_lost, unknown=$other_unknown, failure=$other_failure, waiting_lists=$other_waiting_lists, own=(devices=$own_devices, success=$own_success, lost=$own_lost, unknown=$own_unknown, failure=$own_failure, list=$own_list))";
     }
 }
 
-}
\ No newline at end of file
+}
diff --git a/plugins/omemo/src/manager.vala b/plugins/omemo/src/manager.vala
index 2f641196..9bfa93d6 100644
--- a/plugins/omemo/src/manager.vala
+++ b/plugins/omemo/src/manager.vala
@@ -21,7 +21,7 @@ public class Manager : StreamInteractionModule, Object {
         public int waiting_other_sessions { get; set; }
         public int waiting_own_sessions { get; set; }
         public bool waiting_own_devicelist { get; set; }
-        public bool waiting_other_devicelist { get; set; }
+        public int waiting_other_devicelists { get; set; }
         public bool force_next_attempt { get; set; }
         public bool will_send_now { get; private set; }
         public bool active_send_attempt { get; set; }
@@ -37,12 +37,12 @@ public class Manager : StreamInteractionModule, Object {
             this.waiting_other_sessions = new_try.other_unknown;
             this.waiting_own_sessions = new_try.own_unknown;
             this.waiting_own_devicelist = !new_try.own_list;
-            this.waiting_other_devicelist = !new_try.other_list;
+            this.waiting_other_devicelists = new_try.other_waiting_lists;
             this.active_send_attempt = false;
             will_send_now = false;
             if (new_try.other_failure > 0 || (new_try.other_lost == new_try.other_devices && new_try.other_devices > 0)) {
                 msg.marked = Entities.Message.Marked.WONTSEND;
-            } else if (new_try.other_unknown > 0 || new_try.own_unknown > 0 || !new_try.other_list || !new_try.own_list || new_try.own_devices == 0) {
+            } else if (new_try.other_unknown > 0 || new_try.own_unknown > 0 || new_try.other_waiting_lists > 0 || !new_try.own_list || new_try.own_devices == 0) {
                 msg.marked = Entities.Message.Marked.UNSENT;
             } else if (!new_try.encrypted) {
                 msg.marked = Entities.Message.Marked.WONTSEND;
@@ -52,11 +52,11 @@ public class Manager : StreamInteractionModule, Object {
         }
 
         public bool should_retry_now() {
-            return !waiting_own_devicelist && !waiting_other_devicelist && waiting_other_sessions <= 0 && waiting_own_sessions <= 0 && !active_send_attempt;
+            return !waiting_own_devicelist && waiting_other_devicelists <= 0 && waiting_other_sessions <= 0 && waiting_own_sessions <= 0 && !active_send_attempt;
         }
 
         public string to_string() {
-            return @"MessageState (waiting=(others=$waiting_other_sessions, own=$waiting_own_sessions, other_list=$waiting_other_devicelist, own_list=$waiting_own_devicelist))";
+            return @"MessageState (waiting=(others=$waiting_other_sessions, own=$waiting_own_sessions, other_lists=$waiting_other_devicelists, own_list=$waiting_own_devicelist))";
         }
     }
 
@@ -85,6 +85,21 @@ public class Manager : StreamInteractionModule, Object {
         }
     }
 
+    private Gee.List<Jid> get_occupants(Jid muc, Account account){
+        Gee.List<Jid> occupants = new ArrayList<Jid>(Jid.equals_bare_func);
+        Gee.List<Jid>? occupant_jids = stream_interactor.get_module(MucManager.IDENTITY).get_other_occupants(muc, account);
+        if(occupant_jids == null) {
+            return occupants;
+        }
+        foreach (Jid occupant in occupant_jids) {
+            Jid? occupant_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(occupant, account);
+            if(occupant_jid != null){
+                occupants.add(occupant_jid.bare_jid);
+            }
+        }
+        return occupants;
+    }
+
     private void on_pre_message_send(Entities.Message message, Xmpp.MessageStanza message_stanza, Conversation conversation) {
         if (message.encryption == Encryption.OMEMO) {
             XmppStream? stream = stream_interactor.get_stream(conversation.account);
@@ -107,7 +122,19 @@ public class Manager : StreamInteractionModule, Object {
                 }
             }
 
-            EncryptState enc_state = module.encrypt(message_stanza, conversation.account.bare_jid);
+            Gee.List<Jid> recipients;
+            if (message_stanza.type_ == MessageStanza.TYPE_GROUPCHAT) {
+                recipients = get_occupants((!)message.to.bare_jid, conversation.account);
+                if (recipients.size == 0) {
+                    message.marked = Entities.Message.Marked.WONTSEND;
+                    return;
+                }
+            } else {
+                recipients = new ArrayList<Jid>(Jid.equals_bare_func);
+                recipients.add(message_stanza.to);
+            }
+
+            EncryptState enc_state = module.encrypt(message_stanza, conversation.account.bare_jid, recipients);
             MessageState state;
             lock (message_states) {
                 if (message_states.has_key(message)) {
@@ -135,7 +162,7 @@ public class Manager : StreamInteractionModule, Object {
                     if (state.waiting_other_sessions > 0 && message.counterpart != null) {
                         module.fetch_bundles((!)stream, ((!)message.counterpart).bare_jid);
                     }
-                    if (state.waiting_other_devicelist && message.counterpart != null) {
+                    if (state.waiting_other_devicelists > 0 && message.counterpart != null) {
                         module.request_user_devicelist((!)stream, ((!)message.counterpart).bare_jid);
                     }
                 }
@@ -159,11 +186,12 @@ public class Manager : StreamInteractionModule, Object {
         lock (message_states) {
             foreach (Entities.Message msg in message_states.keys) {
                 if (!msg.account.equals(account)) continue;
+                Gee.List<Jid> occupants = get_occupants(msg.counterpart.bare_jid, account);
                 MessageState state = message_states[msg];
                 if (account.bare_jid.equals(jid)) {
                     state.waiting_own_devicelist = false;
-                } else if (msg.counterpart != null && msg.counterpart.equals_bare(jid)) {
-                    state.waiting_other_devicelist = false;
+                } else if (msg.counterpart != null && (msg.counterpart.equals_bare(jid) || occupants.contains(jid))) {
+                    state.waiting_other_devicelists--;
                 }
                 if (state.should_retry_now()) {
                     send_now.add(msg);
@@ -187,6 +215,7 @@ public class Manager : StreamInteractionModule, Object {
         if (module == null) {
             return;
         }
+
         ArrayList<int32> device_list = module.get_device_list(jid);
         db.identity_meta.insert_device_list(account.id, jid.bare_jid.to_string(), device_list);
         int inc = 0;
@@ -229,20 +258,23 @@ public class Manager : StreamInteractionModule, Object {
         HashSet<Entities.Message> send_now = new HashSet<Entities.Message>();
         lock (message_states) {
             foreach (Entities.Message msg in message_states.keys) {
+
                 bool session_created = true;
                 if (!msg.account.equals(account)) continue;
+                Gee.List<Jid> occupants = get_occupants(msg.counterpart.bare_jid, account);
+
                 MessageState state = message_states[msg];
 
                 if (trusted != Database.IdentityMetaTable.TrustLevel.TRUSTED && trusted != Database.IdentityMetaTable.TrustLevel.VERIFIED) {
                     module.untrust_device(jid, device_id);
                 } else {
-                    if(account.bare_jid.equals(jid) || (msg.counterpart != null && msg.counterpart.equals_bare(jid))) {
+                    if(account.bare_jid.equals(jid) || (msg.counterpart != null && (msg.counterpart.equals_bare(jid) || occupants.contains(jid)))) {
                         session_created = module.start_session(stream, jid, device_id, bundle);
                     }
                 }
                 if (account.bare_jid.equals(jid) && session_created) {
                     state.waiting_own_sessions--;
-                } else if (msg.counterpart != null && msg.counterpart.equals_bare(jid) && session_created) {
+                } else if (msg.counterpart != null && (msg.counterpart.equals_bare(jid) || occupants.contains(jid)) && session_created) {
                     state.waiting_other_sessions--;
                 }
                 if (state.should_retry_now()){
@@ -303,7 +335,8 @@ public class Manager : StreamInteractionModule, Object {
         if (stream == null) return false;
         StreamModule? module = ((!)stream).get_module(StreamModule.IDENTITY);
         if (module == null) return false;
-        return ((!)module).is_known_address(conversation.counterpart.bare_jid);
+        //return ((!)module).is_known_address(conversation.counterpart.bare_jid);
+        return true;
     }
 
     public static void start(StreamInteractor stream_interactor, Database db) {
diff --git a/plugins/omemo/src/stream_module.vala b/plugins/omemo/src/stream_module.vala
index 2c792a2f..13406738 100644
--- a/plugins/omemo/src/stream_module.vala
+++ b/plugins/omemo/src/stream_module.vala
@@ -21,23 +21,35 @@ public class StreamModule : XmppStreamModule {
     private ConcurrentSet<Jid> active_devicelist_requests = new ConcurrentSet<Jid>();
     private Map<Jid, ArrayList<int32>> device_lists = new HashMap<Jid, ArrayList<int32>>(Jid.hash_bare_func, Jid.equals_bare_func);
     private Map<Jid, ArrayList<int32>> ignored_devices = new HashMap<Jid, ArrayList<int32>>(Jid.hash_bare_func, Jid.equals_bare_func);
+    private Map<Jid, Gee.List<Jid>> occupants = new HashMap<Jid, ArrayList<Jid>>(Jid.hash_bare_func, Jid.equals_bare_func);
     private ReceivedPipelineListener received_pipeline_listener;
 
     public signal void store_created(Store store);
     public signal void device_list_loaded(Jid jid);
     public signal void bundle_fetched(Jid jid, int device_id, Bundle bundle);
 
-    public EncryptState encrypt(MessageStanza message, Jid self_jid) {
+    public EncryptState encrypt(MessageStanza message, Jid self_jid, Gee.List<Jid> recipients) {
         EncryptState status = new EncryptState();
         if (!Plugin.ensure_context()) return status;
         if (message.to == null) return status;
+
+        if(message.type_ == MessageStanza.TYPE_GROUPCHAT) {
+            occupants[message.to] = recipients;
+        }
+
         try {
             if (!device_lists.has_key(self_jid)) return status;
             status.own_list = true;
             status.own_devices = device_lists.get(self_jid).size;
-            if (!device_lists.has_key(message.to)) return status;
-            status.other_list = true;
-            status.other_devices = device_lists.get(message.to).size;
+            status.other_waiting_lists = 0;
+            status.other_devices = 0;
+            foreach (Jid recipient in recipients) {
+                if (!device_lists.has_key(recipient)) {
+                    status.other_waiting_lists++;
+                    return status;
+                }
+                status.other_devices += device_lists.get(recipient).size;
+            }
             if (status.own_devices == 0 || status.other_devices == 0) return status;
 
             uint8[] key = new uint8[16];
@@ -57,19 +69,22 @@ public class StreamModule : XmppStreamModule {
                         .put_node(new StanzaNode.text(Base64.encode(ciphertext))));
 
             Address address = new Address(message.to.bare_jid.to_string(), 0);
-            foreach(int32 device_id in device_lists[message.to]) {
-                if (is_ignored_device(message.to, device_id)) {
-                    status.other_lost++;
-                    continue;
-                }
-                try {
-                    address.device_id = (int) device_id;
-                    StanzaNode key_node = create_encrypted_key(key, address);
-                    header.put_node(key_node);
-                    status.other_success++;
-                } catch (Error e) {
-                    if (e.code == ErrorCode.UNKNOWN) status.other_unknown++;
-                    else status.other_failure++;
+            foreach (Jid recipient in recipients) {
+                foreach(int32 device_id in device_lists[recipient]) {
+                    if (is_ignored_device(recipient, device_id)) {
+                        status.other_lost++;
+                        continue;
+                    }
+                    try {
+                        address.name = recipient.bare_jid.to_string();
+                        address.device_id = (int) device_id;
+                        StanzaNode key_node = create_encrypted_key(key, address);
+                        header.put_node(key_node);
+                        status.other_success++;
+                    } catch (Error e) {
+                        if (e.code == ErrorCode.UNKNOWN) status.other_unknown++;
+                        else status.other_failure++;
+                    }
                 }
             }
             address.name = self_jid.bare_jid.to_string();
@@ -147,9 +162,18 @@ public class StreamModule : XmppStreamModule {
     }
 
     public void request_user_devicelist(XmppStream stream, Jid jid) {
-        if (active_devicelist_requests.add(jid)) {
-            if (Plugin.DEBUG) print(@"OMEMO: requesting device list for $jid\n");
-            stream.get_module(Pubsub.Module.IDENTITY).request(stream, jid, NODE_DEVICELIST, (stream, jid, id, node) => on_devicelist(stream, jid, id, node));
+        Gee.List<Jid> recipients;
+        if (occupants.contains(jid)) {
+            recipients = occupants.get(jid);
+        } else {
+            recipients = new ArrayList<Jid>(Jid.equals_bare_func);
+            recipients.add(jid);
+        }
+        foreach (Jid recipient in recipients) {
+            if (active_devicelist_requests.add(recipient)) {
+                if (Plugin.DEBUG) print(@"OMEMO: requesting device list for $jid\n");
+                stream.get_module(Pubsub.Module.IDENTITY).request(stream, recipient, NODE_DEVICELIST, (stream, jid, id, node) => on_devicelist(stream, jid, id, node));
+            }
         }
     }
 
@@ -184,23 +208,32 @@ public class StreamModule : XmppStreamModule {
     }
 
     public void fetch_bundles(XmppStream stream, Jid jid) {
-        if (!device_lists.has_key(jid)) {
-            return;
+        Gee.List<Jid> recipients;
+        if (occupants.contains(jid)) {
+            recipients = occupants.get(jid);
+        } else {
+            recipients = new ArrayList<Jid>(Jid.equals_bare_func);
+            recipients.add(jid);
         }
-        Address address = new Address(jid.bare_jid.to_string(), 0);
-        foreach(int32 device_id in device_lists[jid]) {
-            if (!is_ignored_device(jid, device_id)) {
-                address.device_id = device_id;
-                try {
-                    if (!store.contains_session(address)) {
-                        fetch_bundle(stream, jid, device_id);
+        foreach (Jid recipient in recipients) {
+            if (!device_lists.has_key(recipient)) {
+                return;
+            }
+            Address address = new Address(recipient.bare_jid.to_string(), 0);
+            foreach(int32 device_id in device_lists[recipient]) {
+                if (!is_ignored_device(recipient, device_id)) {
+                    address.device_id = device_id;
+                    try {
+                        if (!store.contains_session(address)) {
+                            fetch_bundle(stream, recipient, device_id);
+                        }
+                    } catch (Error e) {
+                        // Ignore
                     }
-                } catch (Error e) {
-                    // Ignore
                 }
             }
+            address.device_id = 0;
         }
-        address.device_id = 0;
     }
 
     public void fetch_bundle(XmppStream stream, Jid jid, int device_id) {