From 26d10d1dcb95f11b65611473c9840e13683cb5ec Mon Sep 17 00:00:00 2001
From: fiaxh <git@lightrise.org>
Date: Thu, 4 Nov 2021 17:33:08 +0100
Subject: Add multiparty call support to libdino and xmpp-vala

---
 xmpp-vala/src/module/xep/muji_meta.vala | 117 ++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 xmpp-vala/src/module/xep/muji_meta.vala

(limited to 'xmpp-vala/src/module/xep/muji_meta.vala')

diff --git a/xmpp-vala/src/module/xep/muji_meta.vala b/xmpp-vala/src/module/xep/muji_meta.vala
new file mode 100644
index 00000000..4452e611
--- /dev/null
+++ b/xmpp-vala/src/module/xep/muji_meta.vala
@@ -0,0 +1,117 @@
+using Gee;
+namespace Xmpp.Xep.MujiMeta {
+
+    public const string NS_URI = "http://telepathy.freedesktop.org/muji";
+
+    public class Module : XmppStreamModule {
+        public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "muji_meta");
+
+        public signal void call_proposed(Jid from, Jid to, Jid muc_jid, Gee.List<StanzaNode> descriptions);
+        public signal void call_retracted(Jid from, Jid to, Jid muc_jid);
+        public signal void call_accepted(Jid from, Jid muc_jid);
+        public signal void call_rejected(Jid from, Jid to, Jid muc_jid);
+
+        public void send_invite(XmppStream stream, Jid invitee, Jid muc_jid, bool video) {
+            var invite_node = new StanzaNode.build("propose", NS_URI).put_attribute("muc", muc_jid.to_string());
+            invite_node.put_node(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "audio"));
+            if (video) {
+                invite_node.put_node(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "video"));
+            }
+            var muji_node = new StanzaNode.build("muji", NS_URI).add_self_xmlns().put_node(invite_node);
+            MessageStanza invite_message = new MessageStanza() { to=invitee, type_=MessageStanza.TYPE_CHAT };
+            invite_message.stanza.put_node(muji_node);
+            stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, invite_message);
+        }
+
+        public void send_invite_retract_to_peer(XmppStream stream, Jid invitee, Jid muc_jid) {
+            send_jmi_message(stream, "retract", invitee, muc_jid);
+        }
+
+        public void send_invite_accept_to_peer(XmppStream stream, Jid invitor, Jid muc_jid) {
+            send_jmi_message(stream, "accept", invitor, muc_jid);
+        }
+
+        public void send_invite_accept_to_self(XmppStream stream, Jid muc_jid) {
+            send_jmi_message(stream, "accept", Bind.Flag.get_my_jid(stream).bare_jid, muc_jid);
+        }
+
+        public void send_invite_reject_to_peer(XmppStream stream, Jid invitor, Jid muc_jid) {
+            send_jmi_message(stream, "reject", invitor, muc_jid);
+        }
+
+        public void send_invite_reject_to_self(XmppStream stream, Jid muc_jid) {
+            send_jmi_message(stream, "reject", Bind.Flag.get_my_jid(stream).bare_jid, muc_jid);
+        }
+
+        private void send_jmi_message(XmppStream stream, string name, Jid to, Jid muc) {
+            var jmi_node = new StanzaNode.build(name, NS_URI).add_self_xmlns().put_attribute("muc", muc.to_string());
+            var muji_node = new StanzaNode.build("muji", NS_URI).add_self_xmlns().put_node(jmi_node);
+
+            MessageStanza accepted_message = new MessageStanza() { to=to, type_=MessageStanza.TYPE_CHAT };
+            accepted_message.stanza.put_node(muji_node);
+            stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, accepted_message);
+        }
+
+        private void on_received_message(XmppStream stream, MessageStanza message) {
+            Xep.MessageArchiveManagement.MessageFlag? mam_flag = Xep.MessageArchiveManagement.MessageFlag.get_flag(message);
+            if (mam_flag != null) return;
+
+            var muji_node = message.stanza.get_subnode("muji", NS_URI);
+            if (muji_node == null) return;
+
+            StanzaNode? mi_node = null;
+            foreach (StanzaNode node in muji_node.sub_nodes) {
+                if (node.ns_uri == NS_URI) {
+                    mi_node = node;
+                }
+            }
+            if (mi_node == null) return;
+
+            string? jid_str = mi_node.get_attribute("muc");
+            if (jid_str == null) return;
+
+            Jid muc_jid = null;
+            try {
+                muc_jid = new Jid(jid_str);
+            } catch (Error e) {
+                return;
+            }
+
+            switch (mi_node.name) {
+                case "accept":
+                case "proceed":
+                    call_accepted(message.from, muc_jid);
+                    break;
+                case "propose":
+                    ArrayList<StanzaNode> descriptions = new ArrayList<StanzaNode>();
+
+                    foreach (StanzaNode node in mi_node.sub_nodes) {
+                        if (node.name != "description") continue;
+                        descriptions.add(node);
+                    }
+
+                    if (descriptions.size > 0) {
+                        call_proposed(message.from, message.to, muc_jid, descriptions);
+                    }
+                    break;
+                case "retract":
+                    call_retracted(message.from, message.to, muc_jid);
+                    break;
+                case "reject":
+                    call_rejected(message.from, message.to, muc_jid);
+                    break;
+            }
+        }
+
+        public override void attach(XmppStream stream) {
+            stream.get_module(MessageModule.IDENTITY).received_message.connect(on_received_message);
+        }
+
+        public override void detach(XmppStream stream) {
+            stream.get_module(MessageModule.IDENTITY).received_message.disconnect(on_received_message);
+        }
+
+        public override string get_ns() { return NS_URI; }
+        public override string get_id() { return IDENTITY.id; }
+    }
+}
\ No newline at end of file
-- 
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