mirror of https://github.com/TakeV-Lambda/dino.git
88 lines
4.1 KiB
Vala
88 lines
4.1 KiB
Vala
using Xmpp.Core;
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namespace Xmpp.Xep.MessageCarbons {
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private const string NS_URI = "urn:xmpp:carbons:2";
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public class Module : XmppStreamModule {
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public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0280_message_carbons_module");
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public void enable(XmppStream stream) {
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Iq.Stanza iq = new Iq.Stanza.set(new StanzaNode.build("enable", NS_URI).add_self_xmlns());
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stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq);
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}
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public void disable(XmppStream stream) {
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Iq.Stanza iq = new Iq.Stanza.set(new StanzaNode.build("disable", NS_URI).add_self_xmlns());
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stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq);
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}
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public override void attach(XmppStream stream) {
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Bind.Module.require(stream);
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Iq.Module.require(stream);
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Message.Module.require(stream);
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ServiceDiscovery.Module.require(stream);
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stream.stream_negotiated.connect(enable);
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stream.get_module(Message.Module.IDENTITY).pre_received_message.connect(pre_received_message);
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stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
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}
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public override void detach(XmppStream stream) {
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stream.stream_negotiated.disconnect(enable);
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stream.get_module(Message.Module.IDENTITY).pre_received_message.disconnect(pre_received_message);
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}
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public static void require(XmppStream stream) {
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if (stream.get_module(IDENTITY) == null) stream.add_module(new Module());
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}
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public override string get_ns() { return NS_URI; }
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public override string get_id() { return IDENTITY.id; }
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private void pre_received_message(XmppStream stream, Message.Stanza message) {
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StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
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StanzaNode? sent_node = received_node == null ? message.stanza.get_subnode("sent", NS_URI) : null;
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StanzaNode? carbons_node = received_node != null ? received_node : sent_node;
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if (carbons_node != null) {
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StanzaNode? forwarded_node = carbons_node.get_subnode("forwarded", "urn:xmpp:forward:0");
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if (forwarded_node != null) {
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StanzaNode? message_node = forwarded_node.get_subnode("message", Message.NS_URI);
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string? from_attribute = message_node.get_attribute("from", Message.NS_URI);
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// The security model assumed by this document is that all of the resources for a single user are in the same trust boundary.
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// 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.
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if (from_attribute != null && from_attribute == get_bare_jid(stream.get_flag(Bind.Flag.IDENTITY).my_jid)) {
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if (received_node != null) {
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message.add_flag(new MessageFlag(MessageFlag.TYPE_RECEIVED));
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} else if (sent_node != null) {
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message.add_flag(new MessageFlag(MessageFlag.TYPE_SENT));
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}
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message.stanza = message_node;
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message.rerun_parsing = true;
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}
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message.stanza = message_node;
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message.rerun_parsing = true;
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}
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}
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}
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}
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public class MessageFlag : Message.MessageFlag {
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public const string ID = "message_carbons";
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public const string TYPE_RECEIVED = "received";
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public const string TYPE_SENT = "sent";
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private string type_;
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public MessageFlag(string type) {
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this.type_ = type;
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}
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public static MessageFlag? get_flag(Message.Stanza message) {
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return (MessageFlag) message.get_flag(NS_URI, ID);
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}
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public override string get_ns() { return NS_URI; }
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public override string get_id() { return ID; }
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}
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}
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