using Gee; namespace Xmpp.Xep.BlockingCommand { private const string NS_URI = "urn:xmpp:blocking"; public class Module : XmppStreamModule, Iq.Handler { public static ModuleIdentity IDENTITY = new ModuleIdentity(NS_URI, "0191_blocking_command"); public signal void block_push_received(XmppStream stream, Gee.List jids); public signal void unblock_push_received(XmppStream stream, Gee.List jids); public signal void unblock_all_received(XmppStream stream); public bool is_blocked(XmppStream stream, string jid) { return stream.get_flag(Flag.IDENTITY).blocklist.contains(jid); } public bool block(XmppStream stream, Gee.List jids) { if (jids.size == 0) return false; // This would otherwise be a bad-request error. StanzaNode block_node = new StanzaNode.build("block", NS_URI).add_self_xmlns(); fill_node_with_items(block_node, jids); Iq.Stanza iq = new Iq.Stanza.set(block_node); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, null); return true; } public bool unblock(XmppStream stream, Gee.List jids) { if (jids.size == 0) return false; // This would otherwise unblock all blocked JIDs. StanzaNode unblock_node = new StanzaNode.build("unblock", NS_URI).add_self_xmlns(); fill_node_with_items(unblock_node, jids); Iq.Stanza iq = new Iq.Stanza.set(unblock_node); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, null); return true; } public void unblock_all(XmppStream stream) { StanzaNode unblock_node = new StanzaNode.build("unblock", NS_URI).add_self_xmlns(); Iq.Stanza iq = new Iq.Stanza.set(unblock_node); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, null); } public bool is_supported(XmppStream stream) { return stream.has_flag(Flag.IDENTITY); } private void on_iq_set(XmppStream stream, Iq.Stanza iq) { StanzaNode? block_node = iq.stanza.get_subnode("block", NS_URI); StanzaNode? unblock_node = iq.stanza.get_subnode("unblock", NS_URI); Gee.List jids; if (block_node != null) { jids = get_jids_from_items(block_node); stream.get_flag(Flag.IDENTITY).blocklist.add_all(jids); block_push_received(stream, jids); } else if (unblock_node != null) { jids = get_jids_from_items(unblock_node); if (jids.size > 0) { stream.get_flag(Flag.IDENTITY).blocklist.remove_all(jids); unblock_push_received(stream, jids); } else { stream.get_flag(Flag.IDENTITY).blocklist.clear(); unblock_all_received(stream); } } } public override void attach(XmppStream stream) { stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this); stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI); stream.stream_negotiated.connect(on_stream_negotiated); } public override void detach(XmppStream stream) { stream.get_module(Iq.Module.IDENTITY).unregister_from_namespace(NS_URI, this); stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI); stream.stream_negotiated.disconnect(on_stream_negotiated); } public override string get_ns() { return NS_URI; } public override string get_id() { return IDENTITY.id; } private void on_stream_negotiated(XmppStream stream) { stream.get_module(Xep.ServiceDiscovery.Module.IDENTITY).request_info(stream, stream.remote_name, (stream, info_result) => { if (info_result.features.contains(NS_URI)) { stream.add_flag(new Flag()); get_blocklist(stream, (stream, jids) => { stream.get_flag(Flag.IDENTITY).blocklist = jids; }); return; } }); } private delegate void OnBlocklist(XmppStream stream, Gee.List jids); private void get_blocklist(XmppStream stream, owned OnBlocklist listener) { StanzaNode blocklist_node = new StanzaNode.build("blocklist", NS_URI).add_self_xmlns(); Iq.Stanza iq = new Iq.Stanza.get(blocklist_node); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => { StanzaNode? node = iq.stanza.get_subnode("blocklist", NS_URI); if (node != null) { Gee.List jids = get_jids_from_items(node); listener(stream, jids); } }); } private Gee.List get_jids_from_items(StanzaNode node) { Gee.List item_nodes = node.get_subnodes("item", NS_URI); Gee.List jids = new ArrayList(); foreach (StanzaNode item_node in item_nodes) { string? jid = item_node.get_attribute("jid", NS_URI); if (jid != null) { jids.add(jid); } } return jids; } private void fill_node_with_items(StanzaNode node, Gee.List jids) { foreach (string jid in jids) { StanzaNode item_node = new StanzaNode.build("item", NS_URI).add_self_xmlns(); item_node.set_attribute("jid", jid, NS_URI); node.put_node(item_node); } } } public class Flag : XmppStreamFlag { public static FlagIdentity IDENTITY = new FlagIdentity(NS_URI, "blocking_command"); public Gee.List blocklist; public override string get_ns() { return NS_URI; } public override string get_id() { return IDENTITY.id; } } }