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source: protocols/jabber/iq.c @ 47fae0f

Last change on this file since 47fae0f was 17a6ee9, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-04-11T14:37:06Z
Including DCC stuff again, with a wonderful extra layer of abstraction. Some hooks are missing so sending files doesn't work yet. Receiving also still seems to have some issues. On the plus side, at least the MSN/Jabber modules work again.
Property mode set to `100644`
File size: 24.0 KB

Rev	Line
[f06894d]	1	/***************************************************************************\
	2	* *
	3	* BitlBee - An IRC to IM gateway *
	4	* Jabber module - IQ packets *
	5	* *
	6	* Copyright 2006 Wilmer van der Gaast <wilmer@gaast.net> *
	7	* *
	8	* This program is free software; you can redistribute it and/or modify *
	9	* it under the terms of the GNU General Public License as published by *
	10	* the Free Software Foundation; either version 2 of the License, or *
	11	* (at your option) any later version. *
	12	* *
	13	* This program is distributed in the hope that it will be useful, *
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
	16	* GNU General Public License for more details. *
	17	* *
	18	* You should have received a copy of the GNU General Public License along *
	19	* with this program; if not, write to the Free Software Foundation, Inc., *
	20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
	21	* *
	22	\***************************************************************************/
	23
	24	#include "jabber.h"
[77bfd07]	25	#include "sha1.h"
[f06894d]	26
[0da65d5]	27	static xt_status jabber_parse_roster( struct im_connection ic, struct xt_node node, struct xt_node *orig );
	28	static xt_status jabber_iq_display_vcard( struct im_connection ic, struct xt_node node, struct xt_node *orig );
[abbd8ed]	29
[f06894d]	30	xt_status jabber_pkt_iq( struct xt_node *node, gpointer data )
	31	{
[0da65d5]	32	struct im_connection *ic = data;
[58b5f62]	33	struct xt_node c, reply = NULL;
[861c199]	34	char type, s;
[259edd4]	35	int st, pack = 1;
[21167d2]	36
[70f6aab8]	37	type = xt_find_attr( node, "type" );
[f06894d]	38
[70f6aab8]	39	if( !type )
[861c199]	40	{
[84b045d]	41	imcb_error( ic, "Received IQ packet without type." );
[c2fb3809]	42	imc_logout( ic, TRUE );
[861c199]	43	return XT_ABORT;
	44	}
[21167d2]	45
[58b5f62]	46	if( strcmp( type, "result" ) == 0 \|\| strcmp( type, "error" ) == 0 )
[861c199]	47	{
[4306d8b]	48	return jabber_cache_handle_packet( ic, node );
[861c199]	49	}
[58b5f62]	50	else if( strcmp( type, "get" ) == 0 )
	51	{
[eded1f7]	52	if( !( ( c = xt_find_node( node->children, "query" ) ) \|\|
[74349eb]	53	( c = xt_find_node( node->children, "ping" ) ) ) \|\|
[58b5f62]	54	!( s = xt_find_attr( c, "xmlns" ) ) )
	55	{
[74349eb]	56	/* Sigh. Who decided to suddenly invent new elements
	57	instead of just sticking with <query/>? */
[58b5f62]	58	return XT_HANDLED;
	59	}
	60
	61	reply = xt_new_node( "query", NULL, NULL );
	62	xt_add_attr( reply, "xmlns", s );
	63
	64	/* Of course this is a very essential query to support. ;-) */
[47d3ac4]	65	if( strcmp( s, XMLNS_VERSION ) == 0 )
[58b5f62]	66	{
	67	xt_add_child( reply, xt_new_node( "name", "BitlBee", NULL ) );
	68	xt_add_child( reply, xt_new_node( "version", BITLBEE_VERSION, NULL ) );
	69	xt_add_child( reply, xt_new_node( "os", ARCH, NULL ) );
	70	}
[47d3ac4]	71	else if( strcmp( s, XMLNS_TIME ) == 0 )
[a4effbf]	72	{
	73	time_t time_ep;
	74	char buf[1024];
	75
	76	buf[sizeof(buf)-1] = 0;
	77	time_ep = time( NULL );
	78
	79	strftime( buf, sizeof( buf ) - 1, "%Y%m%dT%H:%M:%S", gmtime( &time_ep ) );
	80	xt_add_child( reply, xt_new_node( "utc", buf, NULL ) );
	81
	82	strftime( buf, sizeof( buf ) - 1, "%Z", localtime( &time_ep ) );
	83	xt_add_child( reply, xt_new_node( "tz", buf, NULL ) );
	84	}
[eded1f7]	85	else if( strcmp( s, XMLNS_PING ) == 0 )
	86	{
	87	xt_free_node( reply );
	88	reply = jabber_make_packet( "iq", "result", xt_find_attr( node, "from" ), NULL );
	89	if( ( s = xt_find_attr( node, "id" ) ) )
	90	xt_add_attr( reply, "id", s );
	91	pack = 0;
	92	}
[dc0ba9c]	93	else if( strcmp( s, XMLNS_DISCO_INFO ) == 0 )
[58b5f62]	94	{
[1ba7e8f]	95	const char *features[] = { XMLNS_DISCO_INFO,
[8c1eb80]	96	XMLNS_VERSION,
[40ef702]	97	XMLNS_TIME,
	98	XMLNS_CHATSTATES,
	99	XMLNS_MUC,
[eded1f7]	100	XMLNS_PING,
[1c3008a]	101	XMLNS_SI,
	102	XMLNS_BYTESTREAMS,
	103	XMLNS_FILETRANSFER,
[40ef702]	104	NULL };
	105	const char **f;
	106
[58b5f62]	107	c = xt_new_node( "identity", NULL, NULL );
	108	xt_add_attr( c, "category", "client" );
	109	xt_add_attr( c, "type", "pc" );
	110	xt_add_attr( c, "name", "BitlBee" );
	111	xt_add_child( reply, c );
	112
[40ef702]	113	for( f = features; *f; f ++ )
	114	{
	115	c = xt_new_node( "feature", NULL, NULL );
	116	xt_add_attr( c, "var", *f );
	117	xt_add_child( reply, c );
	118	}
[58b5f62]	119	}
	120	else
	121	{
	122	xt_free_node( reply );
[2c2df7d]	123	reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel", NULL );
[259edd4]	124	pack = 0;
[58b5f62]	125	}
[259edd4]	126	}
	127	else if( strcmp( type, "set" ) == 0 )
	128	{
[1c3008a]	129	if( ( c = xt_find_node( node->children, "si" ) ) &&
[aed152f]	130	( s = xt_find_attr( c, "xmlns" ) ) &&
	131	( strcmp( s, XMLNS_SI ) == 0 ) )
[2c2df7d]	132	{
	133	return jabber_si_handle_request( ic, node, c );
[1c3008a]	134	}
	135	else if( !( c = xt_find_node( node->children, "query" ) ) \|\|
	136	!( s = xt_find_attr( c, "xmlns" ) ) )
[dfa41a4]	137	{
[43462708]	138	imcb_log( ic, "Warning: Received incomplete IQ-%s packet", type );
[dfa41a4]	139	return XT_HANDLED;
[1c3008a]	140	}
	141	else if( strcmp( s, XMLNS_ROSTER ) == 0 )
[2c2df7d]	142	{
[9bcbe48]	143	/* This is a roster push. XMPP servers send this when someone
	144	was added to (or removed from) the buddy list. AFAIK they're
	145	sent even if we added this buddy in our own session. */
[0da65d5]	146	int bare_len = strlen( ic->acc->user );
[abbd8ed]	147
	148	if( ( s = xt_find_attr( node, "from" ) ) == NULL \|\|
[0da65d5]	149	( strncmp( s, ic->acc->user, bare_len ) == 0 &&
[abbd8ed]	150	( s[bare_len] == 0 \|\| s[bare_len] == '/' ) ) )
	151	{
[0da65d5]	152	jabber_parse_roster( ic, node, NULL );
[abbd8ed]	153
	154	/* Should we generate a reply here? Don't think it's
	155	very important... */
	156	}
	157	else
	158	{
[43462708]	159	imcb_log( ic, "Warning: %s tried to fake a roster push!", s ? s : "(unknown)" );
[abbd8ed]	160
	161	xt_free_node( reply );
[2c2df7d]	162	reply = jabber_make_error_packet( node, "not-allowed", "cancel", NULL );
[abbd8ed]	163	pack = 0;
	164	}
[1c3008a]	165	}
	166	else if( strcmp( s, XMLNS_BYTESTREAMS ) == 0 )
[2c2df7d]	167	{
[1c3008a]	168	/* Bytestream Request (stage 2 of file transfer) */
[2ff2076]	169	return jabber_bs_recv_request( ic, node, c );
[1c3008a]	170	}
	171	else
[dfa41a4]	172	{
	173	xt_free_node( reply );
[2c2df7d]	174	reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel", NULL );
[dfa41a4]	175	pack = 0;
	176	}
[259edd4]	177	}
	178
	179	/* If we recognized the xmlns and managed to generate a reply,
	180	finish and send it. */
	181	if( reply )
	182	{
	183	/* Normally we still have to pack it into an iq-result
	184	packet, but for errors, for example, we don't. */
	185	if( pack )
[58b5f62]	186	{
	187	reply = jabber_make_packet( "iq", "result", xt_find_attr( node, "from" ), reply );
	188	if( ( s = xt_find_attr( node, "id" ) ) )
	189	xt_add_attr( reply, "id", s );
	190	}
[259edd4]	191
[0da65d5]	192	st = jabber_write_packet( ic, reply );
[259edd4]	193	xt_free_node( reply );
	194	if( !st )
	195	return XT_ABORT;
[58b5f62]	196	}
[70f6aab8]	197
[861c199]	198	return XT_HANDLED;
	199	}
	200
[0da65d5]	201	static xt_status jabber_do_iq_auth( struct im_connection ic, struct xt_node node, struct xt_node *orig );
	202	static xt_status jabber_finish_iq_auth( struct im_connection ic, struct xt_node node, struct xt_node *orig );
[861c199]	203
[0da65d5]	204	int jabber_init_iq_auth( struct im_connection *ic )
[861c199]	205	{
[0da65d5]	206	struct jabber_data *jd = ic->proto_data;
[861c199]	207	struct xt_node *node;
	208	int st;
[fe7a554]	209
[861c199]	210	node = xt_new_node( "query", NULL, xt_new_node( "username", jd->username, NULL ) );
[47d3ac4]	211	xt_add_attr( node, "xmlns", XMLNS_AUTH );
[861c199]	212	node = jabber_make_packet( "iq", "get", NULL, node );
	213
[0da65d5]	214	jabber_cache_add( ic, node, jabber_do_iq_auth );
	215	st = jabber_write_packet( ic, node );
[861c199]	216
	217	return st;
	218	}
	219
[0da65d5]	220	static xt_status jabber_do_iq_auth( struct im_connection ic, struct xt_node node, struct xt_node *orig )
[861c199]	221	{
[0da65d5]	222	struct jabber_data *jd = ic->proto_data;
[861c199]	223	struct xt_node reply, query;
	224	xt_status st;
	225	char *s;
	226
[9bcbe48]	227	if( !( query = xt_find_node( node->children, "query" ) ) )
	228	{
[43462708]	229	imcb_log( ic, "Warning: Received incomplete IQ packet while authenticating" );
[c2fb3809]	230	imc_logout( ic, FALSE );
[9bcbe48]	231	return XT_HANDLED;
	232	}
[861c199]	233
	234	/* Time to authenticate ourselves! */
	235	reply = xt_new_node( "query", NULL, NULL );
[47d3ac4]	236	xt_add_attr( reply, "xmlns", XMLNS_AUTH );
[861c199]	237	xt_add_child( reply, xt_new_node( "username", jd->username, NULL ) );
[0da65d5]	238	xt_add_child( reply, xt_new_node( "resource", set_getstr( &ic->acc->set, "resource" ), NULL ) );
[861c199]	239
	240	if( xt_find_node( query->children, "digest" ) && ( s = xt_find_attr( jd->xt->root, "id" ) ) )
[21167d2]	241	{
[861c199]	242	/* We can do digest authentication, it seems, and of
	243	course we prefer that. */
[77bfd07]	244	sha1_state_t sha;
[e727608]	245	char hash_hex[41];
[861c199]	246	unsigned char hash[20];
	247	int i;
[21167d2]	248
[77bfd07]	249	sha1_init( &sha );
	250	sha1_append( &sha, (unsigned char*) s, strlen( s ) );
	251	sha1_append( &sha, (unsigned char*) ic->acc->pass, strlen( ic->acc->pass ) );
	252	sha1_finish( &sha, hash );
[21167d2]	253
[861c199]	254	for( i = 0; i < 20; i ++ )
	255	sprintf( hash_hex + i * 2, "%02x", hash[i] );
[21167d2]	256
[861c199]	257	xt_add_child( reply, xt_new_node( "digest", hash_hex, NULL ) );
[21167d2]	258	}
[861c199]	259	else if( xt_find_node( query->children, "password" ) )
[0b4a0db]	260	{
[861c199]	261	/* We'll have to stick with plaintext. Let's hope we're using SSL/TLS... */
[0da65d5]	262	xt_add_child( reply, xt_new_node( "password", ic->acc->pass, NULL ) );
[0b4a0db]	263	}
[861c199]	264	else
[70f6aab8]	265	{
[861c199]	266	xt_free_node( reply );
[995913b]	267
[84b045d]	268	imcb_error( ic, "Can't find suitable authentication method" );
[c2fb3809]	269	imc_logout( ic, FALSE );
[861c199]	270	return XT_ABORT;
[70f6aab8]	271	}
[861c199]	272
	273	reply = jabber_make_packet( "iq", "set", NULL, reply );
[0da65d5]	274	jabber_cache_add( ic, reply, jabber_finish_iq_auth );
	275	st = jabber_write_packet( ic, reply );
[861c199]	276
	277	return st ? XT_HANDLED : XT_ABORT;
	278	}
	279
[0da65d5]	280	static xt_status jabber_finish_iq_auth( struct im_connection ic, struct xt_node node, struct xt_node *orig )
[861c199]	281	{
[0da65d5]	282	struct jabber_data *jd = ic->proto_data;
[9bcbe48]	283	char *type;
	284
	285	if( !( type = xt_find_attr( node, "type" ) ) )
	286	{
[43462708]	287	imcb_log( ic, "Warning: Received incomplete IQ packet while authenticating" );
[c2fb3809]	288	imc_logout( ic, FALSE );
[9bcbe48]	289	return XT_HANDLED;
	290	}
[861c199]	291
	292	if( strcmp( type, "error" ) == 0 )
[70f6aab8]	293	{
[84b045d]	294	imcb_error( ic, "Authentication failure" );
[c2fb3809]	295	imc_logout( ic, FALSE );
[861c199]	296	return XT_ABORT;
	297	}
	298	else if( strcmp( type, "result" ) == 0 )
	299	{
	300	/* This happens when we just successfully authenticated the
	301	old (non-SASL) way. */
	302	jd->flags \|= JFLAG_AUTHENTICATED;
[0da65d5]	303	if( !jabber_get_roster( ic ) )
[70f6aab8]	304	return XT_ABORT;
	305	}
[f06894d]	306
	307	return XT_HANDLED;
	308	}
	309
[0da65d5]	310	xt_status jabber_pkt_bind_sess( struct im_connection ic, struct xt_node node, struct xt_node *orig )
[21167d2]	311	{
[0da65d5]	312	struct jabber_data *jd = ic->proto_data;
[8fb1263]	313	struct xt_node c, reply = NULL;
[861c199]	314	char *s;
[21167d2]	315
[8fb1263]	316	if( node && ( c = xt_find_node( node->children, "bind" ) ) )
[861c199]	317	{
	318	c = xt_find_node( c->children, "jid" );
	319	if( c && c->text_len && ( s = strchr( c->text, '/' ) ) &&
[0da65d5]	320	strcmp( s + 1, set_getstr( &ic->acc->set, "resource" ) ) != 0 )
[84b045d]	321	imcb_log( ic, "Server changed session resource string to `%s'", s + 1 );
[861c199]	322	}
[21167d2]	323
[8fb1263]	324	if( jd->flags & JFLAG_WANT_BIND )
	325	{
	326	reply = xt_new_node( "bind", NULL, xt_new_node( "resource", set_getstr( &ic->acc->set, "resource" ), NULL ) );
	327	xt_add_attr( reply, "xmlns", XMLNS_BIND );
[315dd4c]	328	jd->flags &= ~JFLAG_WANT_BIND;
[8fb1263]	329	}
	330	else if( jd->flags & JFLAG_WANT_SESSION )
[861c199]	331	{
[8fb1263]	332	reply = xt_new_node( "session", NULL, NULL );
	333	xt_add_attr( reply, "xmlns", XMLNS_SESSION );
[315dd4c]	334	jd->flags &= ~JFLAG_WANT_SESSION;
[861c199]	335	}
[21167d2]	336
[8fb1263]	337	if( reply != NULL )
	338	{
	339	reply = jabber_make_packet( "iq", "set", NULL, reply );
	340	jabber_cache_add( ic, reply, jabber_pkt_bind_sess );
	341
	342	if( !jabber_write_packet( ic, reply ) )
	343	return XT_ABORT;
	344	}
	345	else if( ( jd->flags & ( JFLAG_WANT_BIND \| JFLAG_WANT_SESSION ) ) == 0 )
[861c199]	346	{
[0da65d5]	347	if( !jabber_get_roster( ic ) )
[861c199]	348	return XT_ABORT;
	349	}
[21167d2]	350
[861c199]	351	return XT_HANDLED;
[21167d2]	352	}
[70f6aab8]	353
[0da65d5]	354	int jabber_get_roster( struct im_connection *ic )
[70f6aab8]	355	{
	356	struct xt_node *node;
	357	int st;
	358
[84b045d]	359	imcb_log( ic, "Authenticated, requesting buddy list" );
[70f6aab8]	360
	361	node = xt_new_node( "query", NULL, NULL );
[47d3ac4]	362	xt_add_attr( node, "xmlns", XMLNS_ROSTER );
[70f6aab8]	363	node = jabber_make_packet( "iq", "get", NULL, node );
	364
[0da65d5]	365	jabber_cache_add( ic, node, jabber_parse_roster );
	366	st = jabber_write_packet( ic, node );
[70f6aab8]	367
	368	return st;
	369	}
[cfbb3a6]	370
[0da65d5]	371	static xt_status jabber_parse_roster( struct im_connection ic, struct xt_node node, struct xt_node *orig )
[861c199]	372	{
	373	struct xt_node query, c;
[abbd8ed]	374	int initial = ( orig != NULL );
[861c199]	375
[9bcbe48]	376	if( !( query = xt_find_node( node->children, "query" ) ) )
	377	{
[43462708]	378	imcb_log( ic, "Warning: Received NULL roster packet" );
[9bcbe48]	379	return XT_HANDLED;
	380	}
[861c199]	381
	382	c = query->children;
	383	while( ( c = xt_find_node( c, "item" ) ) )
	384	{
[f0cb961]	385	struct xt_node *group = xt_find_node( node->children, "group" );
[861c199]	386	char *jid = xt_find_attr( c, "jid" );
	387	char *name = xt_find_attr( c, "name" );
	388	char *sub = xt_find_attr( c, "subscription" );
	389
[f0cb961]	390	if( jid && sub )
[abbd8ed]	391	{
	392	if( ( strcmp( sub, "both" ) == 0 \|\| strcmp( sub, "to" ) == 0 ) )
	393	{
[17a6ee9]	394	if( initial \|\| bee_user_by_handle( ic->bee, ic, jid ) == NULL )
[f0cb961]	395	imcb_add_buddy( ic, jid, ( group && group->text_len ) ?
	396	group->text : NULL );
	397
[d06eabf]	398	if( name )
	399	imcb_rename_buddy( ic, jid, name );
[abbd8ed]	400	}
	401	else if( strcmp( sub, "remove" ) == 0 )
	402	{
[0da65d5]	403	jabber_buddy_remove_bare( ic, jid );
[998b103]	404	imcb_remove_buddy( ic, jid, NULL );
[abbd8ed]	405	}
	406	}
[861c199]	407
	408	c = c->next;
	409	}
	410
[abbd8ed]	411	if( initial )
[84b045d]	412	imcb_connected( ic );
[861c199]	413
	414	return XT_HANDLED;
	415	}
	416
[0da65d5]	417	int jabber_get_vcard( struct im_connection ic, char bare_jid )
[1991be6]	418	{
	419	struct xt_node *node;
	420
	421	if( strchr( bare_jid, '/' ) )
	422	return 1; /* This was an error, but return 0 should only be done if the connection died... */
	423
	424	node = xt_new_node( "vCard", NULL, NULL );
[47d3ac4]	425	xt_add_attr( node, "xmlns", XMLNS_VCARD );
[1991be6]	426	node = jabber_make_packet( "iq", "get", bare_jid, node );
	427
[0da65d5]	428	jabber_cache_add( ic, node, jabber_iq_display_vcard );
	429	return jabber_write_packet( ic, node );
[1991be6]	430	}
	431
[0da65d5]	432	static xt_status jabber_iq_display_vcard( struct im_connection ic, struct xt_node node, struct xt_node *orig )
[1991be6]	433	{
[0da65d5]	434	struct xt_node vc, c, sc; / subchild, ic is already in use ;-) */
[1991be6]	435	GString *reply;
	436	char *s;
	437
	438	if( ( s = xt_find_attr( node, "type" ) ) == NULL \|\|
	439	strcmp( s, "result" ) != 0 \|\|
	440	( vc = xt_find_node( node->children, "vCard" ) ) == NULL )
	441	{
	442	s = xt_find_attr( orig, "to" ); /* If this returns NULL something's wrong.. */
[84b045d]	443	imcb_log( ic, "Could not retrieve vCard of %s", s ? s : "(NULL)" );
[1991be6]	444	return XT_HANDLED;
	445	}
	446
	447	s = xt_find_attr( orig, "to" );
	448	reply = g_string_new( "vCard information for " );
	449	reply = g_string_append( reply, s ? s : "(NULL)" );
	450	reply = g_string_append( reply, ":\n" );
	451
	452	/* I hate this format, I really do... */
	453
	454	if( ( c = xt_find_node( vc->children, "FN" ) ) && c->text_len )
	455	g_string_append_printf( reply, "Name: %s\n", c->text );
	456
	457	if( ( c = xt_find_node( vc->children, "N" ) ) && c->children )
	458	{
	459	reply = g_string_append( reply, "Full name:" );
	460
	461	if( ( sc = xt_find_node( c->children, "PREFIX" ) ) && sc->text_len )
	462	g_string_append_printf( reply, " %s", sc->text );
	463	if( ( sc = xt_find_node( c->children, "GIVEN" ) ) && sc->text_len )
	464	g_string_append_printf( reply, " %s", sc->text );
	465	if( ( sc = xt_find_node( c->children, "MIDDLE" ) ) && sc->text_len )
	466	g_string_append_printf( reply, " %s", sc->text );
	467	if( ( sc = xt_find_node( c->children, "FAMILY" ) ) && sc->text_len )
	468	g_string_append_printf( reply, " %s", sc->text );
	469	if( ( sc = xt_find_node( c->children, "SUFFIX" ) ) && sc->text_len )
	470	g_string_append_printf( reply, " %s", sc->text );
	471
	472	reply = g_string_append_c( reply, '\n' );
	473	}
	474
	475	if( ( c = xt_find_node( vc->children, "NICKNAME" ) ) && c->text_len )
	476	g_string_append_printf( reply, "Nickname: %s\n", c->text );
	477
	478	if( ( c = xt_find_node( vc->children, "BDAY" ) ) && c->text_len )
	479	g_string_append_printf( reply, "Date of birth: %s\n", c->text );
	480
	481	/* Slightly alternative use of for... ;-) */
	482	for( c = vc->children; ( c = xt_find_node( c, "EMAIL" ) ); c = c->next )
	483	{
	484	if( ( sc = xt_find_node( c->children, "USERID" ) ) == NULL \|\| sc->text_len == 0 )
	485	continue;
	486
	487	if( xt_find_node( c->children, "HOME" ) )
	488	s = "Home";
	489	else if( xt_find_node( c->children, "WORK" ) )
	490	s = "Work";
	491	else
	492	s = "Misc.";
	493
	494	g_string_append_printf( reply, "%s e-mail address: %s\n", s, sc->text );
	495	}
	496
	497	if( ( c = xt_find_node( vc->children, "URL" ) ) && c->text_len )
	498	g_string_append_printf( reply, "Homepage: %s\n", c->text );
	499
	500	/* Slightly alternative use of for... ;-) */
	501	for( c = vc->children; ( c = xt_find_node( c, "ADR" ) ); c = c->next )
	502	{
	503	if( xt_find_node( c->children, "HOME" ) )
	504	s = "Home";
	505	else if( xt_find_node( c->children, "WORK" ) )
	506	s = "Work";
	507	else
	508	s = "Misc.";
	509
	510	g_string_append_printf( reply, "%s address: ", s );
	511
	512	if( ( sc = xt_find_node( c->children, "STREET" ) ) && sc->text_len )
	513	g_string_append_printf( reply, "%s ", sc->text );
	514	if( ( sc = xt_find_node( c->children, "EXTADR" ) ) && sc->text_len )
	515	g_string_append_printf( reply, "%s, ", sc->text );
	516	if( ( sc = xt_find_node( c->children, "PCODE" ) ) && sc->text_len )
	517	g_string_append_printf( reply, "%s, ", sc->text );
	518	if( ( sc = xt_find_node( c->children, "LOCALITY" ) ) && sc->text_len )
	519	g_string_append_printf( reply, "%s, ", sc->text );
	520	if( ( sc = xt_find_node( c->children, "REGION" ) ) && sc->text_len )
	521	g_string_append_printf( reply, "%s, ", sc->text );
	522	if( ( sc = xt_find_node( c->children, "CTRY" ) ) && sc->text_len )
	523	g_string_append_printf( reply, "%s", sc->text );
	524
	525	if( reply->str[reply->len-2] == ',' )
	526	reply = g_string_truncate( reply, reply->len-2 );
	527
	528	reply = g_string_append_c( reply, '\n' );
	529	}
	530
	531	for( c = vc->children; ( c = xt_find_node( c, "TEL" ) ); c = c->next )
	532	{
	533	if( ( sc = xt_find_node( c->children, "NUMBER" ) ) == NULL \|\| sc->text_len == 0 )
	534	continue;
	535
	536	if( xt_find_node( c->children, "HOME" ) )
	537	s = "Home";
	538	else if( xt_find_node( c->children, "WORK" ) )
	539	s = "Work";
	540	else
	541	s = "Misc.";
	542
	543	g_string_append_printf( reply, "%s phone number: %s\n", s, sc->text );
	544	}
	545
	546	if( ( c = xt_find_node( vc->children, "DESC" ) ) && c->text_len )
	547	g_string_append_printf( reply, "Other information:\n%s", c->text );
	548
	549	/* sigh */
	550
[84b045d]	551	imcb_log( ic, "%s", reply->str );
[1991be6]	552	g_string_free( reply, TRUE );
	553
	554	return XT_HANDLED;
	555	}
	556
[a73e91a]	557	static xt_status jabber_add_to_roster_callback( struct im_connection ic, struct xt_node node, struct xt_node *orig );
	558
[0da65d5]	559	int jabber_add_to_roster( struct im_connection ic, char handle, char *name )
[cfbb3a6]	560	{
	561	struct xt_node *node;
	562	int st;
	563
	564	/* Build the item entry */
	565	node = xt_new_node( "item", NULL, NULL );
	566	xt_add_attr( node, "jid", handle );
	567	if( name )
	568	xt_add_attr( node, "name", name );
	569
	570	/* And pack it into a roster-add packet */
	571	node = xt_new_node( "query", NULL, node );
[47d3ac4]	572	xt_add_attr( node, "xmlns", XMLNS_ROSTER );
[cfbb3a6]	573	node = jabber_make_packet( "iq", "set", NULL, node );
[a73e91a]	574	jabber_cache_add( ic, node, jabber_add_to_roster_callback );
[cfbb3a6]	575
[0da65d5]	576	st = jabber_write_packet( ic, node );
[cfbb3a6]	577
	578	return st;
	579	}
	580
[a73e91a]	581	static xt_status jabber_add_to_roster_callback( struct im_connection ic, struct xt_node node, struct xt_node *orig )
	582	{
	583	char s, jid = NULL;
	584	struct xt_node *c;
	585
	586	if( ( c = xt_find_node( orig->children, "query" ) ) &&
	587	( c = xt_find_node( c->children, "item" ) ) &&
	588	( jid = xt_find_attr( c, "jid" ) ) &&
	589	( s = xt_find_attr( node, "type" ) ) &&
	590	strcmp( s, "result" ) == 0 )
	591	{
[17a6ee9]	592	if( bee_user_by_handle( ic->bee, ic, jid ) == NULL )
[a73e91a]	593	imcb_add_buddy( ic, jid, NULL );
	594	}
	595	else
	596	{
	597	imcb_log( ic, "Error while adding `%s' to your contact list.",
	598	jid ? jid : "(unknown handle)" );
	599	}
	600
	601	return XT_HANDLED;
	602	}
	603
[0da65d5]	604	int jabber_remove_from_roster( struct im_connection ic, char handle )
[cfbb3a6]	605	{
	606	struct xt_node *node;
	607	int st;
	608
	609	/* Build the item entry */
	610	node = xt_new_node( "item", NULL, NULL );
	611	xt_add_attr( node, "jid", handle );
	612	xt_add_attr( node, "subscription", "remove" );
	613
	614	/* And pack it into a roster-add packet */
	615	node = xt_new_node( "query", NULL, node );
[47d3ac4]	616	xt_add_attr( node, "xmlns", XMLNS_ROSTER );
[cfbb3a6]	617	node = jabber_make_packet( "iq", "set", NULL, node );
	618
[0da65d5]	619	st = jabber_write_packet( ic, node );
[cfbb3a6]	620
	621	xt_free_node( node );
	622	return st;
	623	}
[dc0ba9c]	624
	625	xt_status jabber_iq_parse_features( struct im_connection ic, struct xt_node node, struct xt_node *orig );
	626
	627	xt_status jabber_iq_query_features( struct im_connection ic, char bare_jid )
	628	{
	629	struct xt_node node, query;
	630	struct jabber_buddy *bud;
	631
	632	if( ( bud = jabber_buddy_by_jid( ic, bare_jid , 0 ) ) == NULL )
	633	{
	634	/* Who cares about the unknown... */
[4358b10]	635	imcb_log( ic, "Couldn't find buddy: %s", bare_jid);
[54a2014]	636	return XT_HANDLED;
[dc0ba9c]	637	}
	638
	639	if( bud->features ) /* been here already */
	640	return XT_HANDLED;
	641
	642	node = xt_new_node( "query", NULL, NULL );
	643	xt_add_attr( node, "xmlns", XMLNS_DISCO_INFO );
	644
	645	if( !( query = jabber_make_packet( "iq", "get", bare_jid, node ) ) )
	646	{
	647	imcb_log( ic, "WARNING: Couldn't generate feature query" );
	648	xt_free_node( node );
[54a2014]	649	return XT_HANDLED;
[dc0ba9c]	650	}
	651
	652	jabber_cache_add( ic, query, jabber_iq_parse_features );
	653
[54a2014]	654	return jabber_write_packet( ic, query ) ? XT_HANDLED : XT_ABORT;
[dc0ba9c]	655	}
	656
	657	xt_status jabber_iq_parse_features( struct im_connection ic, struct xt_node node, struct xt_node *orig )
	658	{
	659	struct xt_node *c;
	660	struct jabber_buddy *bud;
[c1a3c27]	661	char feature, xmlns, *from;
[dc0ba9c]	662
[699376f7]	663	if( !( from = xt_find_attr( node, "from" ) ) \|\|
	664	!( c = xt_find_node( node->children, "query" ) ) \|\|
[c1a3c27]	665	!( xmlns = xt_find_attr( c, "xmlns" ) ) \|\|
	666	!( strcmp( xmlns, XMLNS_DISCO_INFO ) == 0 ) )
[dc0ba9c]	667	{
	668	imcb_log( ic, "WARNING: Received incomplete IQ-result packet for discover" );
	669	return XT_HANDLED;
	670	}
[c1a3c27]	671	if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
[dc0ba9c]	672	{
	673	/* Who cares about the unknown... */
[c1a3c27]	674	imcb_log( ic, "Couldn't find buddy: %s", from );
[54a2014]	675	return XT_HANDLED;
[dc0ba9c]	676	}
	677
	678	c = c->children;
[1c3008a]	679	while( ( c = xt_find_node( c, "feature" ) ) )
	680	{
[dc0ba9c]	681	feature = xt_find_attr( c, "var" );
[c1a3c27]	682	if( feature )
	683	bud->features = g_slist_append( bud->features, g_strdup( feature ) );
[dc0ba9c]	684	c = c->next;
	685	}
	686
	687	return XT_HANDLED;
	688	}
	689
	690	xt_status jabber_iq_parse_server_features( struct im_connection ic, struct xt_node node, struct xt_node *orig );
	691
	692	xt_status jabber_iq_query_server( struct im_connection ic, char jid, char *xmlns )
	693	{
	694	struct xt_node node, query;
	695	struct jabber_data *jd = ic->proto_data;
	696
	697	node = xt_new_node( "query", NULL, NULL );
	698	xt_add_attr( node, "xmlns", xmlns );
	699
	700	if( !( query = jabber_make_packet( "iq", "get", jid, node ) ) )
	701	{
	702	imcb_log( ic, "WARNING: Couldn't generate server query" );
	703	xt_free_node( node );
	704	}
	705
	706	jd->have_streamhosts--;
	707	jabber_cache_add( ic, query, jabber_iq_parse_server_features );
	708
[54a2014]	709	return jabber_write_packet( ic, query ) ? XT_HANDLED : XT_ABORT;
[dc0ba9c]	710	}
	711
	712	/*
	713	* Query the server for "items", query each "item" for identities, query each "item" that's a proxy for it's bytestream info
	714	*/
	715	xt_status jabber_iq_parse_server_features( struct im_connection ic, struct xt_node node, struct xt_node *orig )
	716	{
	717	struct xt_node *c;
	718	struct jabber_data *jd = ic->proto_data;
[c1a3c27]	719	char xmlns, from;
[dc0ba9c]	720
	721	if( !( c = xt_find_node( node->children, "query" ) ) \|\|
[c1a3c27]	722	!( from = xt_find_attr( node, "from" ) ) \|\|
	723	!( xmlns = xt_find_attr( c, "xmlns" ) ) )
[dc0ba9c]	724	{
	725	imcb_log( ic, "WARNING: Received incomplete IQ-result packet for discover" );
	726	return XT_HANDLED;
	727	}
	728
	729	jd->have_streamhosts++;
	730
[c1a3c27]	731	if( strcmp( xmlns, XMLNS_DISCO_ITEMS ) == 0 )
[dc0ba9c]	732	{
[c1a3c27]	733	char *itemjid;
[dc0ba9c]	734
	735	/* answer from server */
	736
	737	c = c->children;
	738	while( ( c = xt_find_node( c, "item" ) ) )
	739	{
	740	itemjid = xt_find_attr( c, "jid" );
[c1a3c27]	741
	742	if( itemjid )
	743	jabber_iq_query_server( ic, itemjid, XMLNS_DISCO_INFO );
[dc0ba9c]	744
	745	c = c->next;
	746	}
[1c3008a]	747	}
[42fc5b6]	748	else if( strcmp( xmlns, XMLNS_DISCO_INFO ) == 0 )
[dc0ba9c]	749	{
	750	char category, type;
	751
	752	/* answer from potential proxy */
	753
	754	c = c->children;
	755	while( ( c = xt_find_node( c, "identity" ) ) )
	756	{
	757	category = xt_find_attr( c, "category" );
	758	type = xt_find_attr( c, "type" );
	759
	760	if( type && ( strcmp( type, "bytestreams" ) == 0 ) &&
	761	category && ( strcmp( category, "proxy" ) == 0 ) )
[c1a3c27]	762	jabber_iq_query_server( ic, from, XMLNS_BYTESTREAMS );
[dc0ba9c]	763
	764	c = c->next;
	765	}
[1c3008a]	766	}
[42fc5b6]	767	else if( strcmp( xmlns, XMLNS_BYTESTREAMS ) == 0 )
[dc0ba9c]	768	{
[c1a3c27]	769	char host, jid, *port_s;
[dc0ba9c]	770	int port;
	771
	772	/* answer from proxy */
	773
	774	if( ( c = xt_find_node( c->children, "streamhost" ) ) &&
	775	( host = xt_find_attr( c, "host" ) ) &&
[c1a3c27]	776	( port_s = xt_find_attr( c, "port" ) ) &&
	777	( sscanf( port_s, "%d", &port ) == 1 ) &&
[dc0ba9c]	778	( jid = xt_find_attr( c, "jid" ) ) )
	779	{
	780	jabber_streamhost_t *sh = g_new0( jabber_streamhost_t, 1 );
[c1a3c27]	781
[dc0ba9c]	782	sh->jid = g_strdup( jid );
	783	sh->host = g_strdup( host );
[c1a3c27]	784	g_snprintf( sh->port, sizeof( sh->port ), "%u", port );
[dc0ba9c]	785
	786	imcb_log( ic, "Proxy found: jid %s host %s port %u", jid, host, port );
	787	jd->streamhosts = g_slist_append( jd->streamhosts, sh );
	788	}
	789	}
	790
	791	if( jd->have_streamhosts == 0 )
	792	jd->have_streamhosts++;
[1c3008a]	793
[dc0ba9c]	794	return XT_HANDLED;
	795	}

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