From ec35f95e13f4f2f756c81a35ded0980245acc5f4 Mon Sep 17 00:00:00 2001
From: fiaxh <git@lightrise.org>
Date: Wed, 24 Mar 2021 14:12:42 +0100
Subject: Add initial support for DTLS-SRTP

---
 .../0176_jingle_ice_udp/jingle_ice_udp_module.vala |  1 +
 .../0176_jingle_ice_udp/transport_parameters.vala  | 27 ++++++++++++++++++++++
 2 files changed, 28 insertions(+)

(limited to 'xmpp-vala/src/module/xep/0176_jingle_ice_udp')

diff --git a/xmpp-vala/src/module/xep/0176_jingle_ice_udp/jingle_ice_udp_module.vala b/xmpp-vala/src/module/xep/0176_jingle_ice_udp/jingle_ice_udp_module.vala
index 9ed494ff..4b7c7a36 100644
--- a/xmpp-vala/src/module/xep/0176_jingle_ice_udp/jingle_ice_udp_module.vala
+++ b/xmpp-vala/src/module/xep/0176_jingle_ice_udp/jingle_ice_udp_module.vala
@@ -12,6 +12,7 @@ public abstract class Module : XmppStreamModule, Jingle.Transport {
     public override void attach(XmppStream stream) {
         stream.get_module(Jingle.Module.IDENTITY).register_transport(this);
         stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
+        stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, "urn:xmpp:jingle:apps:dtls:0");
     }
     public override void detach(XmppStream stream) {
         stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI);
diff --git a/xmpp-vala/src/module/xep/0176_jingle_ice_udp/transport_parameters.vala b/xmpp-vala/src/module/xep/0176_jingle_ice_udp/transport_parameters.vala
index 8b8aa07d..3c69d0af 100644
--- a/xmpp-vala/src/module/xep/0176_jingle_ice_udp/transport_parameters.vala
+++ b/xmpp-vala/src/module/xep/0176_jingle_ice_udp/transport_parameters.vala
@@ -13,6 +13,9 @@ public abstract class Xmpp.Xep.JingleIceUdp.IceUdpTransportParameters : Jingle.T
     public ConcurrentList<Candidate> unsent_local_candidates = new ConcurrentList<Candidate>(Candidate.equals_func);
     public Gee.List<Candidate> remote_candidates = new ArrayList<Candidate>(Candidate.equals_func);
 
+    public string? own_fingerprint = null;
+    public string? peer_fingerprint = null;
+
     public Jid local_full_jid { get; private set; }
     public Jid peer_full_jid { get; private set; }
     private uint8 components_;
@@ -34,6 +37,11 @@ public abstract class Xmpp.Xep.JingleIceUdp.IceUdpTransportParameters : Jingle.T
             foreach (StanzaNode candidateNode in node.get_subnodes("candidate")) {
                 remote_candidates.add(Candidate.parse(candidateNode));
             }
+
+            StanzaNode? fingerprint_node = node.get_subnode("fingerprint", "urn:xmpp:jingle:apps:dtls:0");
+            if (fingerprint_node != null) {
+                peer_fingerprint = fingerprint_node.get_deep_string_content();
+            }
         }
     }
 
@@ -57,6 +65,20 @@ public abstract class Xmpp.Xep.JingleIceUdp.IceUdpTransportParameters : Jingle.T
                 .add_self_xmlns()
                 .put_attribute("ufrag", local_ufrag)
                 .put_attribute("pwd", local_pwd);
+
+        if (own_fingerprint != null) {
+            var fingerprint_node = new StanzaNode.build("fingerprint", "urn:xmpp:jingle:apps:dtls:0")
+                    .add_self_xmlns()
+                    .put_attribute("hash", "sha-256")
+                    .put_node(new StanzaNode.text(own_fingerprint));
+            if (incoming) {
+                fingerprint_node.put_attribute("setup", "active");
+            } else {
+                fingerprint_node.put_attribute("setup", "actpass");
+            }
+            node.put_node(fingerprint_node);
+        }
+
         foreach (Candidate candidate in unsent_local_candidates) {
             node.put_node(candidate.to_xml());
         }
@@ -72,6 +94,11 @@ public abstract class Xmpp.Xep.JingleIceUdp.IceUdpTransportParameters : Jingle.T
         foreach (StanzaNode candidateNode in node.get_subnodes("candidate")) {
             remote_candidates.add(Candidate.parse(candidateNode));
         }
+
+        StanzaNode? fingerprint_node = node.get_subnode("fingerprint", "urn:xmpp:jingle:apps:dtls:0");
+        if (fingerprint_node != null) {
+            peer_fingerprint = fingerprint_node.get_deep_string_content();
+        }
     }
 
     public virtual void handle_transport_info(StanzaNode node) throws Jingle.IqError {
-- 
cgit v1.2.3-54-g00ecf