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Diffstat (limited to 'xmpp-vala/src/module/xep/0280_message_carbons.vala')
-rw-r--r--xmpp-vala/src/module/xep/0280_message_carbons.vala91
1 files changed, 91 insertions, 0 deletions
diff --git a/xmpp-vala/src/module/xep/0280_message_carbons.vala b/xmpp-vala/src/module/xep/0280_message_carbons.vala
new file mode 100644
index 00000000..18b2ecdf
--- /dev/null
+++ b/xmpp-vala/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; }
+ }
+}