From 642dac9aa0b90dd2f17df5dddd0e7914a7d306d3 Mon Sep 17 00:00:00 2001
From: hrxi <hrrrxi@gmail.com>
Date: Sat, 20 Jul 2019 23:14:40 +0200
Subject: Add support for Jingle SOCKS5 bytestreams (XEP-0260)

---
 .../src/module/xep/0065_socks5_bytestreams.vala    | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 xmpp-vala/src/module/xep/0065_socks5_bytestreams.vala

(limited to 'xmpp-vala/src/module/xep/0065_socks5_bytestreams.vala')

diff --git a/xmpp-vala/src/module/xep/0065_socks5_bytestreams.vala b/xmpp-vala/src/module/xep/0065_socks5_bytestreams.vala
new file mode 100644
index 00000000..1890aac3
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0065_socks5_bytestreams.vala
@@ -0,0 +1,83 @@
+using Gee;
+using Xmpp;
+using Xmpp.Xep;
+
+namespace Xmpp.Xep.Socks5Bytestreams {
+
+internal const string NS_URI = "http://jabber.org/protocol/bytestreams";
+
+public class Proxy : Object {
+    public string host { get; private set; }
+    public Jid jid { get; private set; }
+    public int port { get; private set; }
+
+    public Proxy(string host, Jid jid, int port) {
+        this.host = host;
+        this.jid = jid;
+        this.port = port;
+    }
+}
+
+public class Module : XmppStreamModule, Iq.Handler {
+    public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0065_socks5_bytestreams");
+
+    public override void attach(XmppStream stream) {
+        stream.add_flag(new Flag());
+        query_availability(stream);
+    }
+    public override void detach(XmppStream stream) { }
+
+    public void on_iq_set(XmppStream stream, Iq.Stanza iq) { }
+
+    public Gee.List<Proxy> get_proxies(XmppStream stream) {
+        return stream.get_flag(Flag.IDENTITY).proxies;
+    }
+
+    private void query_availability(XmppStream stream) {
+        stream.get_module(ServiceDiscovery.Module.IDENTITY).request_items(stream, stream.remote_name, (stream, items_result) => {
+            foreach (Xep.ServiceDiscovery.Item item in items_result.items) {
+                stream.get_module(ServiceDiscovery.Module.IDENTITY).request_info(stream, item.jid, (stream, info_result) => {
+                    foreach (string feature in info_result.features) {
+                        if (feature == NS_URI) {
+                            StanzaNode query_ = new StanzaNode.build("query", NS_URI).add_self_xmlns();
+                            Iq.Stanza iq = new Iq.Stanza.get(query_) { to=item.jid };
+                            stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => {
+                                if (iq.is_error()) {
+                                    return;
+                                }
+                                StanzaNode? query = iq.stanza.get_subnode("query", NS_URI);
+                                StanzaNode? stream_host = query != null ? query.get_subnode("streamhost", NS_URI) : null;
+                                if (query == null || stream_host == null) {
+                                    return;
+                                }
+                                string? host = stream_host.get_attribute("host");
+                                string? jid_str = stream_host.get_attribute("jid");
+                                Jid? jid = jid_str != null ? Jid.parse(jid_str) : null;
+                                int port = stream_host.get_attribute_int("port");
+                                if (host == null || jid == null || port <= 0 || port > 65535) {
+                                    return;
+                                }
+                                stream.get_flag(Flag.IDENTITY).proxies.add(new Proxy(host, jid, port));
+                            });
+                        }
+                    }
+                });
+            }
+        });
+    }
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return IDENTITY.id; }
+}
+
+public class Flag : XmppStreamFlag {
+    public static FlagIdentity<Flag> IDENTITY = new FlagIdentity<Flag>(NS_URI, "socks5_bytestreams");
+
+    public Gee.List<Proxy> proxies = new ArrayList<Proxy>();
+
+    public override string get_ns() { return NS_URI; }
+    public override string get_id() { return IDENTITY.id; }
+}
+
+
+}
-- 
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