mirror of https://github.com/TakeV-Lambda/dino.git
64 lines
2.5 KiB
Vala
64 lines
2.5 KiB
Vala
using Xmpp.Core;
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namespace Xmpp.Xep.VCard {
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private const string NS_URI = "vcard-temp";
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private const string NS_URI_UPDATE = NS_URI + ":x:update";
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public class Module : XmppStreamModule {
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public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0027_current_pgp_usage");
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public signal void received_avatar(XmppStream stream, string jid, string id);
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private PixbufStorage storage;
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public Module(PixbufStorage storage) {
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this.storage = storage;
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}
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public override void attach(XmppStream stream) {
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stream.get_module(Presence.Module.IDENTITY).received_presence.connect(on_received_presence);
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}
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public override void detach(XmppStream stream) {
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stream.get_module(Presence.Module.IDENTITY).received_presence.disconnect(on_received_presence);
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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 on_received_presence(XmppStream stream, Presence.Stanza presence) {
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StanzaNode? update_node = presence.stanza.get_subnode("x", NS_URI_UPDATE);
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if (update_node == null) return;
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StanzaNode? photo_node = update_node.get_subnode("photo", NS_URI_UPDATE);
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if (photo_node == null) return;
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string? sha1 = photo_node.get_string_content();
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if (sha1 == null) return;
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if (storage.has_image(sha1)) {
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if (stream.get_flag(Muc.Flag.IDENTITY).is_occupant(presence.from)) {
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received_avatar(stream, presence.from, sha1);
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} else {
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received_avatar(stream, get_bare_jid(presence.from), sha1);
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}
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} else {
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Iq.Stanza iq = new Iq.Stanza.get(new StanzaNode.build("vCard", NS_URI).add_self_xmlns());
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if (stream.get_flag(Muc.Flag.IDENTITY).is_occupant(presence.from)) {
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iq.to = presence.from;
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} else {
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iq.to = get_bare_jid(presence.from);
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}
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stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, on_received_vcard);
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}
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}
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private void on_received_vcard(XmppStream stream, Iq.Stanza iq) {
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if (iq.is_error()) return;
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string? res = iq.stanza.get_deep_string_content(@"$NS_URI:vCard", "PHOTO", "BINVAL");
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if (res == null) return;
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uint8[] content = Base64.decode(res);
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string sha1 = Checksum.compute_for_data(ChecksumType.SHA1, content);
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storage.store(sha1, content);
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stream.get_module(IDENTITY).received_avatar(stream, iq.from, sha1);
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}
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}
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}
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