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source: protocols/jabber/iq.c @ 9dc67f4

Last change on this file since 9dc67f4 was 0e4c3dd, checked in by dequis <dx@…>, at 2015-02-21T06:18:21Z
Add hipchat support to the jabber module
Property mode set to `100644`
File size: 26.9 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - IQ packets *
5	* *
6	* Copyright 2006-2012 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"
25	#include "sha1.h"
26
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);
29
30	xt_status jabber_pkt_iq(struct xt_node *node, gpointer data)
31	{
32	struct im_connection *ic = data;
33	struct jabber_data *jd = ic->proto_data;
34	struct xt_node c, reply = NULL;
35	char type, s;
36	int st, pack = 1;
37
38	type = xt_find_attr(node, "type");
39
40	if (!type) {
41	imcb_error(ic, "Received IQ packet without type.");
42	imc_logout(ic, TRUE);
43	return XT_ABORT;
44	}
45
46	if (strcmp(type, "result") == 0 \|\| strcmp(type, "error") == 0) {
47	return jabber_cache_handle_packet(ic, node);
48	} else if (strcmp(type, "get") == 0) {
49	if (!((c = xt_find_node(node->children, "query")) \|\|
50	(c = xt_find_node(node->children, "ping")) \|\|
51	(c = xt_find_node(node->children, "time"))) \|\|
52	!(s = xt_find_attr(c, "xmlns"))) {
53	/* Sigh. Who decided to suddenly invent new elements
54	instead of just sticking with <query/>? */
55	return XT_HANDLED;
56	}
57
58	reply = xt_new_node("query", NULL, NULL);
59	xt_add_attr(reply, "xmlns", s);
60
61	/* Of course this is a very essential query to support. ;-) */
62	if (strcmp(s, XMLNS_VERSION) == 0) {
63	xt_add_child(reply, xt_new_node("name", set_getstr(&ic->acc->set, "user_agent"), NULL));
64	xt_add_child(reply, xt_new_node("version", BITLBEE_VERSION, NULL));
65	xt_add_child(reply, xt_new_node("os", ARCH, NULL));
66	} else if (strcmp(s, XMLNS_TIME_OLD) == 0) {
67	time_t time_ep;
68	char buf[1024];
69
70	buf[sizeof(buf) - 1] = 0;
71	time_ep = time(NULL);
72
73	strftime(buf, sizeof(buf) - 1, "%Y%m%dT%H:%M:%S", gmtime(&time_ep));
74	xt_add_child(reply, xt_new_node("utc", buf, NULL));
75
76	strftime(buf, sizeof(buf) - 1, "%Z", localtime(&time_ep));
77	xt_add_child(reply, xt_new_node("tz", buf, NULL));
78	} else if (strcmp(s, XMLNS_TIME) == 0) {
79	time_t time_ep;
80	char buf[1024];
81
82	buf[sizeof(buf) - 1] = 0;
83	time_ep = time(NULL);
84
85	xt_free_node(reply);
86	reply = xt_new_node("time", NULL, NULL);
87	xt_add_attr(reply, "xmlns", XMLNS_TIME);
88
89	strftime(buf, sizeof(buf) - 1, "%Y%m%dT%H:%M:%SZ", gmtime(&time_ep));
90	xt_add_child(reply, xt_new_node("utc", buf, NULL));
91
92	strftime(buf, sizeof(buf) - 1, "%z", localtime(&time_ep));
93	if (strlen(buf) >= 5) {
94	buf[6] = '\0';
95	buf[5] = buf[4];
96	buf[4] = buf[3];
97	buf[3] = ':';
98	}
99	xt_add_child(reply, xt_new_node("tzo", buf, NULL));
100	} else if (strcmp(s, XMLNS_PING) == 0) {
101	xt_free_node(reply);
102	reply = jabber_make_packet("iq", "result", xt_find_attr(node, "from"), NULL);
103	if ((s = xt_find_attr(node, "id"))) {
104	xt_add_attr(reply, "id", s);
105	}
106	pack = 0;
107	} else if (strcmp(s, XMLNS_DISCO_INFO) == 0) {
108	const char *features[] = { XMLNS_DISCO_INFO,
109	XMLNS_VERSION,
110	XMLNS_TIME_OLD,
111	XMLNS_TIME,
112	XMLNS_CHATSTATES,
113	XMLNS_MUC,
114	XMLNS_PING,
115	XMLNS_RECEIPTS,
116	XMLNS_SI,
117	XMLNS_BYTESTREAMS,
118	XMLNS_FILETRANSFER,
119	NULL };
120	const char **f;
121
122	c = xt_new_node("identity", NULL, NULL);
123	xt_add_attr(c, "category", "client");
124	xt_add_attr(c, "type", "pc");
125	xt_add_attr(c, "name", set_getstr(&ic->acc->set, "user_agent"));
126	xt_add_child(reply, c);
127
128	for (f = features; *f; f++) {
129	c = xt_new_node("feature", NULL, NULL);
130	xt_add_attr(c, "var", *f);
131	xt_add_child(reply, c);
132	}
133	} else {
134	xt_free_node(reply);
135	reply = jabber_make_error_packet(node, "feature-not-implemented", "cancel", NULL);
136	pack = 0;
137	}
138	} else if (strcmp(type, "set") == 0) {
139	if ((c = xt_find_node(node->children, "si")) &&
140	(s = xt_find_attr(c, "xmlns")) &&
141	(strcmp(s, XMLNS_SI) == 0)) {
142	return jabber_si_handle_request(ic, node, c);
143	} else if (!(c = xt_find_node(node->children, "query")) \|\|
144	!(s = xt_find_attr(c, "xmlns"))) {
145	return XT_HANDLED;
146	} else if (strcmp(s, XMLNS_ROSTER) == 0) {
147	/* This is a roster push. XMPP servers send this when someone
148	was added to (or removed from) the buddy list. AFAIK they're
149	sent even if we added this buddy in our own session. */
150	int bare_len = strlen(jd->me);
151
152	if ((s = xt_find_attr(node, "from")) == NULL \|\|
153	(strncmp(s, jd->me, bare_len) == 0 &&
154	(s[bare_len] == 0 \|\| s[bare_len] == '/'))) {
155	jabber_parse_roster(ic, node, NULL);
156
157	/* Should we generate a reply here? Don't think it's
158	very important... */
159	} else {
160	imcb_log(ic, "Warning: %s tried to fake a roster push!", s ? s : "(unknown)");
161
162	xt_free_node(reply);
163	reply = jabber_make_error_packet(node, "not-allowed", "cancel", NULL);
164	pack = 0;
165	}
166	} else if (strcmp(s, XMLNS_BYTESTREAMS) == 0) {
167	/* Bytestream Request (stage 2 of file transfer) */
168	return jabber_bs_recv_request(ic, node, c);
169	} else {
170	xt_free_node(reply);
171	reply = jabber_make_error_packet(node, "feature-not-implemented", "cancel", NULL);
172	pack = 0;
173	}
174	}
175
176	/* If we recognized the xmlns and managed to generate a reply,
177	finish and send it. */
178	if (reply) {
179	/* Normally we still have to pack it into an iq-result
180	packet, but for errors, for example, we don't. */
181	if (pack) {
182	reply = jabber_make_packet("iq", "result", xt_find_attr(node, "from"), reply);
183	if ((s = xt_find_attr(node, "id"))) {
184	xt_add_attr(reply, "id", s);
185	}
186	}
187
188	st = jabber_write_packet(ic, reply);
189	xt_free_node(reply);
190	if (!st) {
191	return XT_ABORT;
192	}
193	}
194
195	return XT_HANDLED;
196	}
197
198	static xt_status jabber_do_iq_auth(struct im_connection ic, struct xt_node node, struct xt_node *orig);
199	static xt_status jabber_finish_iq_auth(struct im_connection ic, struct xt_node node, struct xt_node *orig);
200
201	int jabber_init_iq_auth(struct im_connection *ic)
202	{
203	struct jabber_data *jd = ic->proto_data;
204	struct xt_node *node;
205	int st;
206
207	node = xt_new_node("query", NULL, xt_new_node("username", jd->username, NULL));
208	xt_add_attr(node, "xmlns", XMLNS_AUTH);
209	node = jabber_make_packet("iq", "get", NULL, node);
210
211	jabber_cache_add(ic, node, jabber_do_iq_auth);
212	st = jabber_write_packet(ic, node);
213
214	return st;
215	}
216
217	static xt_status jabber_do_iq_auth(struct im_connection ic, struct xt_node node, struct xt_node *orig)
218	{
219	struct jabber_data *jd = ic->proto_data;
220	struct xt_node reply, query;
221	xt_status st;
222	char *s;
223
224	if (!(query = xt_find_node(node->children, "query"))) {
225	imcb_log(ic, "Warning: Received incomplete IQ packet while authenticating");
226	imc_logout(ic, FALSE);
227	return XT_HANDLED;
228	}
229
230	/* Time to authenticate ourselves! */
231	reply = xt_new_node("query", NULL, NULL);
232	xt_add_attr(reply, "xmlns", XMLNS_AUTH);
233	xt_add_child(reply, xt_new_node("username", jd->username, NULL));
234	xt_add_child(reply, xt_new_node("resource", set_getstr(&ic->acc->set, "resource"), NULL));
235
236	if (xt_find_node(query->children, "digest") && (s = xt_find_attr(jd->xt->root, "id"))) {
237	/* We can do digest authentication, it seems, and of
238	course we prefer that. */
239	sha1_state_t sha;
240	char hash_hex[41];
241	unsigned char hash[20];
242	int i;
243
244	sha1_init(&sha);
245	sha1_append(&sha, (unsigned char *) s, strlen(s));
246	sha1_append(&sha, (unsigned char *) ic->acc->pass, strlen(ic->acc->pass));
247	sha1_finish(&sha, hash);
248
249	for (i = 0; i < 20; i++) {
250	sprintf(hash_hex + i * 2, "%02x", hash[i]);
251	}
252
253	xt_add_child(reply, xt_new_node("digest", hash_hex, NULL));
254	} else if (xt_find_node(query->children, "password")) {
255	/* We'll have to stick with plaintext. Let's hope we're using SSL/TLS... */
256	xt_add_child(reply, xt_new_node("password", ic->acc->pass, NULL));
257	} else {
258	xt_free_node(reply);
259
260	imcb_error(ic, "Can't find suitable authentication method");
261	imc_logout(ic, FALSE);
262	return XT_ABORT;
263	}
264
265	reply = jabber_make_packet("iq", "set", NULL, reply);
266	jabber_cache_add(ic, reply, jabber_finish_iq_auth);
267	st = jabber_write_packet(ic, reply);
268
269	return st ? XT_HANDLED : XT_ABORT;
270	}
271
272	static xt_status jabber_finish_iq_auth(struct im_connection ic, struct xt_node node, struct xt_node *orig)
273	{
274	struct jabber_data *jd = ic->proto_data;
275	char *type;
276
277	if (!(type = xt_find_attr(node, "type"))) {
278	imcb_log(ic, "Warning: Received incomplete IQ packet while authenticating");
279	imc_logout(ic, FALSE);
280	return XT_HANDLED;
281	}
282
283	if (strcmp(type, "error") == 0) {
284	imcb_error(ic, "Authentication failure");
285	imc_logout(ic, FALSE);
286	return XT_ABORT;
287	} else if (strcmp(type, "result") == 0) {
288	/* This happens when we just successfully authenticated the
289	old (non-SASL) way. */
290	jd->flags \|= JFLAG_AUTHENTICATED;
291	if (!jabber_get_roster(ic)) {
292	return XT_ABORT;
293	}
294	if (!jabber_iq_disco_server(ic)) {
295	return XT_ABORT;
296	}
297	}
298
299	return XT_HANDLED;
300	}
301
302	xt_status jabber_pkt_bind_sess(struct im_connection ic, struct xt_node node, struct xt_node *orig)
303	{
304	struct jabber_data *jd = ic->proto_data;
305	struct xt_node c, reply = NULL;
306	char *s;
307
308	if (node && (c = xt_find_node(node->children, "bind"))) {
309	c = xt_find_node(c->children, "jid");
310	if (!c \|\| !c->text) {
311	/* Server is crap, but this is no disaster. */
312	} else if (jabber_compare_jid(jd->me, c->text) == 0) {
313	s = strchr(c->text, '/');
314	if (s) {
315	*s = '\0';
316	}
317	jabber_set_me(ic, c->text);
318	if (s) {
319	*s = '/';
320	}
321	} else if (c && c->text_len && (s = strchr(c->text, '/')) &&
322	strcmp(s + 1, set_getstr(&ic->acc->set, "resource")) != 0) {
323	imcb_log(ic, "Server changed session resource string to `%s'", s + 1);
324	}
325	}
326
327	if (jd->flags & JFLAG_WANT_BIND) {
328	reply = xt_new_node("bind", NULL, xt_new_node("resource", set_getstr(&ic->acc->set, "resource"), NULL));
329	xt_add_attr(reply, "xmlns", XMLNS_BIND);
330	jd->flags &= ~JFLAG_WANT_BIND;
331	} else if (jd->flags & JFLAG_WANT_SESSION) {
332	reply = xt_new_node("session", NULL, NULL);
333	xt_add_attr(reply, "xmlns", XMLNS_SESSION);
334	jd->flags &= ~JFLAG_WANT_SESSION;
335	}
336
337	if (reply != NULL) {
338	reply = jabber_make_packet("iq", "set", NULL, reply);
339	jabber_cache_add(ic, reply, jabber_pkt_bind_sess);
340
341	if (!jabber_write_packet(ic, reply)) {
342	return XT_ABORT;
343	}
344	} else if ((jd->flags & (JFLAG_WANT_BIND \| JFLAG_WANT_SESSION)) == 0) {
345	if (!jabber_get_roster(ic)) {
346	return XT_ABORT;
347	}
348	if (!jabber_iq_disco_server(ic)) {
349	return XT_ABORT;
350	}
351	}
352
353	return XT_HANDLED;
354	}
355
356	int jabber_get_roster(struct im_connection *ic)
357	{
358	struct xt_node *node;
359	int st;
360
361	imcb_log(ic, "Authenticated, requesting buddy list");
362
363	node = xt_new_node("query", NULL, NULL);
364	xt_add_attr(node, "xmlns", XMLNS_ROSTER);
365	node = jabber_make_packet("iq", "get", NULL, node);
366
367	jabber_cache_add(ic, node, jabber_parse_roster);
368	st = jabber_write_packet(ic, node);
369
370	return st;
371	}
372
373	static xt_status jabber_parse_roster(struct im_connection ic, struct xt_node node, struct xt_node *orig)
374	{
375	struct xt_node query, c;
376	int initial = (orig != NULL);
377
378	if (!(query = xt_find_node(node->children, "query"))) {
379	imcb_log(ic, "Warning: Received NULL roster packet");
380	return XT_HANDLED;
381	}
382
383	c = query->children;
384	while ((c = xt_find_node(c, "item"))) {
385	struct xt_node *group = xt_find_node(c->children, "group");
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	char *mention_name = xt_find_attr(c, "mention_name");
390	char *nick = mention_name ? : name;
391
392	if (jid && sub) {
393	if ((strcmp(sub, "both") == 0 \|\| strcmp(sub, "to") == 0)) {
394	imcb_add_buddy(ic, jid, (group && group->text_len) ?
395	group->text : NULL);
396
397	if (name) {
398	imcb_rename_buddy(ic, jid, name);
399	}
400
401	if (nick) {
402	imcb_buddy_nick_hint(ic, jid, nick);
403	}
404	} else if (strcmp(sub, "remove") == 0) {
405	jabber_buddy_remove_bare(ic, jid);
406	imcb_remove_buddy(ic, jid, NULL);
407	}
408	}
409
410	c = c->next;
411	}
412
413	if (initial) {
414	imcb_connected(ic);
415	}
416
417	return XT_HANDLED;
418	}
419
420	int jabber_get_vcard(struct im_connection ic, char bare_jid)
421	{
422	struct xt_node *node;
423
424	if (strchr(bare_jid, '/')) {
425	return 1; /* This was an error, but return 0 should only be done if the connection died... */
426
427	}
428	node = xt_new_node("vCard", NULL, NULL);
429	xt_add_attr(node, "xmlns", XMLNS_VCARD);
430	node = jabber_make_packet("iq", "get", bare_jid, node);
431
432	jabber_cache_add(ic, node, jabber_iq_display_vcard);
433	return jabber_write_packet(ic, node);
434	}
435
436	static xt_status jabber_iq_display_vcard(struct im_connection ic, struct xt_node node, struct xt_node *orig)
437	{
438	struct xt_node vc, c, sc; / subchild, ic is already in use ;-) */
439	GString *reply;
440	char *s;
441
442	if ((s = xt_find_attr(node, "type")) == NULL \|\|
443	strcmp(s, "result") != 0 \|\|
444	(vc = xt_find_node(node->children, "vCard")) == NULL) {
445	s = xt_find_attr(orig, "to"); /* If this returns NULL something's wrong.. */
446	imcb_log(ic, "Could not retrieve vCard of %s", s ? s : "(NULL)");
447	return XT_HANDLED;
448	}
449
450	s = xt_find_attr(orig, "to");
451	reply = g_string_new("vCard information for ");
452	reply = g_string_append(reply, s ? s : "(NULL)");
453	reply = g_string_append(reply, ":\n");
454
455	/* I hate this format, I really do... */
456
457	if ((c = xt_find_node(vc->children, "FN")) && c->text_len) {
458	g_string_append_printf(reply, "Name: %s\n", c->text);
459	}
460
461	if ((c = xt_find_node(vc->children, "N")) && c->children) {
462	reply = g_string_append(reply, "Full name:");
463
464	if ((sc = xt_find_node(c->children, "PREFIX")) && sc->text_len) {
465	g_string_append_printf(reply, " %s", sc->text);
466	}
467	if ((sc = xt_find_node(c->children, "GIVEN")) && sc->text_len) {
468	g_string_append_printf(reply, " %s", sc->text);
469	}
470	if ((sc = xt_find_node(c->children, "MIDDLE")) && sc->text_len) {
471	g_string_append_printf(reply, " %s", sc->text);
472	}
473	if ((sc = xt_find_node(c->children, "FAMILY")) && sc->text_len) {
474	g_string_append_printf(reply, " %s", sc->text);
475	}
476	if ((sc = xt_find_node(c->children, "SUFFIX")) && sc->text_len) {
477	g_string_append_printf(reply, " %s", sc->text);
478	}
479
480	reply = g_string_append_c(reply, '\n');
481	}
482
483	if ((c = xt_find_node(vc->children, "NICKNAME")) && c->text_len) {
484	g_string_append_printf(reply, "Nickname: %s\n", c->text);
485	}
486
487	if ((c = xt_find_node(vc->children, "BDAY")) && c->text_len) {
488	g_string_append_printf(reply, "Date of birth: %s\n", c->text);
489	}
490
491	/* Slightly alternative use of for... ;-) */
492	for (c = vc->children; (c = xt_find_node(c, "EMAIL")); c = c->next) {
493	if ((sc = xt_find_node(c->children, "USERID")) == NULL \|\| sc->text_len == 0) {
494	continue;
495	}
496
497	if (xt_find_node(c->children, "HOME")) {
498	s = "Home";
499	} else if (xt_find_node(c->children, "WORK")) {
500	s = "Work";
501	} else {
502	s = "Misc.";
503	}
504
505	g_string_append_printf(reply, "%s e-mail address: %s\n", s, sc->text);
506	}
507
508	if ((c = xt_find_node(vc->children, "URL")) && c->text_len) {
509	g_string_append_printf(reply, "Homepage: %s\n", c->text);
510	}
511
512	/* Slightly alternative use of for... ;-) */
513	for (c = vc->children; (c = xt_find_node(c, "ADR")); c = c->next) {
514	if (xt_find_node(c->children, "HOME")) {
515	s = "Home";
516	} else if (xt_find_node(c->children, "WORK")) {
517	s = "Work";
518	} else {
519	s = "Misc.";
520	}
521
522	g_string_append_printf(reply, "%s address: ", s);
523
524	if ((sc = xt_find_node(c->children, "STREET")) && sc->text_len) {
525	g_string_append_printf(reply, "%s ", sc->text);
526	}
527	if ((sc = xt_find_node(c->children, "EXTADR")) && sc->text_len) {
528	g_string_append_printf(reply, "%s, ", sc->text);
529	}
530	if ((sc = xt_find_node(c->children, "PCODE")) && sc->text_len) {
531	g_string_append_printf(reply, "%s, ", sc->text);
532	}
533	if ((sc = xt_find_node(c->children, "LOCALITY")) && sc->text_len) {
534	g_string_append_printf(reply, "%s, ", sc->text);
535	}
536	if ((sc = xt_find_node(c->children, "REGION")) && sc->text_len) {
537	g_string_append_printf(reply, "%s, ", sc->text);
538	}
539	if ((sc = xt_find_node(c->children, "CTRY")) && sc->text_len) {
540	g_string_append_printf(reply, "%s", sc->text);
541	}
542
543	if (reply->str[reply->len - 2] == ',') {
544	reply = g_string_truncate(reply, reply->len - 2);
545	}
546
547	reply = g_string_append_c(reply, '\n');
548	}
549
550	for (c = vc->children; (c = xt_find_node(c, "TEL")); c = c->next) {
551	if ((sc = xt_find_node(c->children, "NUMBER")) == NULL \|\| sc->text_len == 0) {
552	continue;
553	}
554
555	if (xt_find_node(c->children, "HOME")) {
556	s = "Home";
557	} else if (xt_find_node(c->children, "WORK")) {
558	s = "Work";
559	} else {
560	s = "Misc.";
561	}
562
563	g_string_append_printf(reply, "%s phone number: %s\n", s, sc->text);
564	}
565
566	if ((c = xt_find_node(vc->children, "DESC")) && c->text_len) {
567	g_string_append_printf(reply, "Other information:\n%s", c->text);
568	}
569
570	/* sigh */
571
572	imcb_log(ic, "%s", reply->str);
573	g_string_free(reply, TRUE);
574
575	return XT_HANDLED;
576	}
577
578	static xt_status jabber_add_to_roster_callback(struct im_connection ic, struct xt_node node, struct xt_node *orig);
579
580	int jabber_add_to_roster(struct im_connection ic, const char handle, const char name, const char group)
581	{
582	struct xt_node *node;
583	int st;
584
585	/* Build the item entry */
586	node = xt_new_node("item", NULL, NULL);
587	xt_add_attr(node, "jid", handle);
588	if (name) {
589	xt_add_attr(node, "name", name);
590	}
591	if (group) {
592	xt_add_child(node, xt_new_node("group", group, NULL));
593	}
594
595	/* And pack it into a roster-add packet */
596	node = xt_new_node("query", NULL, node);
597	xt_add_attr(node, "xmlns", XMLNS_ROSTER);
598	node = jabber_make_packet("iq", "set", NULL, node);
599	jabber_cache_add(ic, node, jabber_add_to_roster_callback);
600
601	st = jabber_write_packet(ic, node);
602
603	return st;
604	}
605
606	static xt_status jabber_add_to_roster_callback(struct im_connection ic, struct xt_node node, struct xt_node *orig)
607	{
608	char s, jid = NULL;
609	struct xt_node *c;
610
611	if ((c = xt_find_node(orig->children, "query")) &&
612	(c = xt_find_node(c->children, "item")) &&
613	(jid = xt_find_attr(c, "jid")) &&
614	(s = xt_find_attr(node, "type")) &&
615	strcmp(s, "result") == 0) {
616	if (bee_user_by_handle(ic->bee, ic, jid) == NULL) {
617	imcb_add_buddy(ic, jid, NULL);
618	}
619	} else {
620	imcb_log(ic, "Error while adding `%s' to your contact list.",
621	jid ? jid : "(unknown handle)");
622	}
623
624	return XT_HANDLED;
625	}
626
627	int jabber_remove_from_roster(struct im_connection ic, char handle)
628	{
629	struct xt_node *node;
630	int st;
631
632	/* Build the item entry */
633	node = xt_new_node("item", NULL, NULL);
634	xt_add_attr(node, "jid", handle);
635	xt_add_attr(node, "subscription", "remove");
636
637	/* And pack it into a roster-add packet */
638	node = xt_new_node("query", NULL, node);
639	xt_add_attr(node, "xmlns", XMLNS_ROSTER);
640	node = jabber_make_packet("iq", "set", NULL, node);
641
642	st = jabber_write_packet(ic, node);
643
644	xt_free_node(node);
645	return st;
646	}
647
648	xt_status jabber_iq_parse_features(struct im_connection ic, struct xt_node node, struct xt_node *orig);
649
650	xt_status jabber_iq_query_features(struct im_connection ic, char bare_jid)
651	{
652	struct xt_node node, query;
653	struct jabber_buddy *bud;
654
655	if ((bud = jabber_buddy_by_jid(ic, bare_jid, 0)) == NULL) {
656	/* Who cares about the unknown... */
657	imcb_log(ic, "Couldn't find buddy: %s", bare_jid);
658	return XT_HANDLED;
659	}
660
661	if (bud->features) { /* been here already */
662	return XT_HANDLED;
663	}
664
665	node = xt_new_node("query", NULL, NULL);
666	xt_add_attr(node, "xmlns", XMLNS_DISCO_INFO);
667
668	if (!(query = jabber_make_packet("iq", "get", bare_jid, node))) {
669	imcb_log(ic, "WARNING: Couldn't generate feature query");
670	xt_free_node(node);
671	return XT_HANDLED;
672	}
673
674	jabber_cache_add(ic, query, jabber_iq_parse_features);
675
676	return jabber_write_packet(ic, query) ? XT_HANDLED : XT_ABORT;
677	}
678
679	xt_status jabber_iq_parse_features(struct im_connection ic, struct xt_node node, struct xt_node *orig)
680	{
681	struct xt_node *c;
682	struct jabber_buddy *bud;
683	char feature, xmlns, *from;
684
685	if (!(from = xt_find_attr(node, "from")) \|\|
686	!(c = xt_find_node(node->children, "query")) \|\|
687	!(xmlns = xt_find_attr(c, "xmlns")) \|\|
688	!(strcmp(xmlns, XMLNS_DISCO_INFO) == 0)) {
689	imcb_log(ic, "WARNING: Received incomplete IQ-result packet for discover");
690	return XT_HANDLED;
691	}
692	if ((bud = jabber_buddy_by_jid(ic, from, 0)) == NULL) {
693	/* Who cares about the unknown... */
694	imcb_log(ic, "Couldn't find buddy: %s", from);
695	return XT_HANDLED;
696	}
697
698	c = c->children;
699	while ((c = xt_find_node(c, "feature"))) {
700	feature = xt_find_attr(c, "var");
701	if (feature) {
702	bud->features = g_slist_append(bud->features, g_strdup(feature));
703	}
704	c = c->next;
705	}
706
707	return XT_HANDLED;
708	}
709
710	xt_status jabber_iq_parse_server_features(struct im_connection ic, struct xt_node node, struct xt_node *orig);
711
712	xt_status jabber_iq_query_server(struct im_connection ic, char jid, char *xmlns)
713	{
714	struct xt_node node, query;
715	struct jabber_data *jd = ic->proto_data;
716
717	node = xt_new_node("query", NULL, NULL);
718	xt_add_attr(node, "xmlns", xmlns);
719
720	if (!(query = jabber_make_packet("iq", "get", jid, node))) {
721	imcb_log(ic, "WARNING: Couldn't generate server query");
722	xt_free_node(node);
723	}
724
725	jd->have_streamhosts--;
726	jabber_cache_add(ic, query, jabber_iq_parse_server_features);
727
728	return jabber_write_packet(ic, query) ? XT_HANDLED : XT_ABORT;
729	}
730
731	/*
732	* Query the server for "items", query each "item" for identities, query each "item" that's a proxy for it's bytestream info
733	*/
734	xt_status jabber_iq_parse_server_features(struct im_connection ic, struct xt_node node, struct xt_node *orig)
735	{
736	struct xt_node *c;
737	struct jabber_data *jd = ic->proto_data;
738	char xmlns, from;
739
740	if (!(c = xt_find_node(node->children, "query")) \|\|
741	!(from = xt_find_attr(node, "from")) \|\|
742	!(xmlns = xt_find_attr(c, "xmlns"))) {
743	imcb_log(ic, "WARNING: Received incomplete IQ-result packet for discover");
744	return XT_HANDLED;
745	}
746
747	jd->have_streamhosts++;
748
749	if (strcmp(xmlns, XMLNS_DISCO_ITEMS) == 0) {
750	char *itemjid;
751
752	/* answer from server */
753
754	c = c->children;
755	while ((c = xt_find_node(c, "item"))) {
756	itemjid = xt_find_attr(c, "jid");
757
758	if (itemjid) {
759	jabber_iq_query_server(ic, itemjid, XMLNS_DISCO_INFO);
760	}
761
762	c = c->next;
763	}
764	} else if (strcmp(xmlns, XMLNS_DISCO_INFO) == 0) {
765	char category, type;
766
767	/* answer from potential proxy */
768
769	c = c->children;
770	while ((c = xt_find_node(c, "identity"))) {
771	category = xt_find_attr(c, "category");
772	type = xt_find_attr(c, "type");
773
774	if (type && (strcmp(type, "bytestreams") == 0) &&
775	category && (strcmp(category, "proxy") == 0)) {
776	jabber_iq_query_server(ic, from, XMLNS_BYTESTREAMS);
777	}
778
779	c = c->next;
780	}
781	} else if (strcmp(xmlns, XMLNS_BYTESTREAMS) == 0) {
782	char host, jid, *port_s;
783	int port;
784
785	/* answer from proxy */
786
787	if ((c = xt_find_node(c->children, "streamhost")) &&
788	(host = xt_find_attr(c, "host")) &&
789	(port_s = xt_find_attr(c, "port")) &&
790	(sscanf(port_s, "%d", &port) == 1) &&
791	(jid = xt_find_attr(c, "jid"))) {
792	jabber_streamhost_t *sh = g_new0(jabber_streamhost_t, 1);
793
794	sh->jid = g_strdup(jid);
795	sh->host = g_strdup(host);
796	g_snprintf(sh->port, sizeof(sh->port), "%u", port);
797
798	imcb_log(ic, "Proxy found: jid %s host %s port %u", jid, host, port);
799	jd->streamhosts = g_slist_append(jd->streamhosts, sh);
800	}
801	}
802
803	if (jd->have_streamhosts == 0) {
804	jd->have_streamhosts++;
805	}
806
807	return XT_HANDLED;
808	}
809
810	static xt_status jabber_iq_version_response(struct im_connection *ic,
811	struct xt_node node, struct xt_node orig);
812
813	void jabber_iq_version_send(struct im_connection ic, struct jabber_buddy bud, void *data)
814	{
815	struct xt_node node, query;
816
817	node = xt_new_node("query", NULL, NULL);
818	xt_add_attr(node, "xmlns", XMLNS_VERSION);
819	query = jabber_make_packet("iq", "get", bud->full_jid, node);
820	jabber_cache_add(ic, query, jabber_iq_version_response);
821
822	jabber_write_packet(ic, query);
823	}
824
825	static xt_status jabber_iq_version_response(struct im_connection *ic,
826	struct xt_node node, struct xt_node orig)
827	{
828	struct xt_node *query;
829	GString *rets;
830	char *s;
831	char *ret[2] = {};
832	bee_user_t *bu;
833	struct jabber_buddy *bud = NULL;
834
835	if ((s = xt_find_attr(node, "from")) &&
836	(bud = jabber_buddy_by_jid(ic, s, 0)) &&
837	(query = xt_find_node(node->children, "query")) &&
838	(bu = bee_user_by_handle(ic->bee, ic, bud->bare_jid))) {
839	rets = g_string_new("Resource ");
840	g_string_append(rets, bud->resource);
841	} else {
842	return XT_HANDLED;
843	}
844
845	for (query = query->children; query; query = query->next) {
846	if (query->text_len > 0) {
847	g_string_append_printf(rets, " %s: %s,", query->name, query->text);
848	}
849	}
850
851	g_string_truncate(rets, rets->len - 1);
852	ret[0] = rets->str;
853	imcb_buddy_action_response(bu, "VERSION", ret, NULL);
854	g_string_free(rets, TRUE);
855
856	return XT_HANDLED;
857	}
858
859	static xt_status jabber_iq_disco_server_response(struct im_connection *ic,
860	struct xt_node node, struct xt_node orig);
861
862	int jabber_iq_disco_server(struct im_connection *ic)
863	{
864	struct xt_node node, iq;
865	struct jabber_data *jd = ic->proto_data;
866
867	node = xt_new_node("query", NULL, NULL);
868	xt_add_attr(node, "xmlns", XMLNS_DISCO_INFO);
869	iq = jabber_make_packet("iq", "get", jd->server, node);
870
871	jabber_cache_add(ic, iq, jabber_iq_disco_server_response);
872	return jabber_write_packet(ic, iq);
873	}
874
875	static xt_status jabber_iq_disco_server_response(struct im_connection *ic,
876	struct xt_node node, struct xt_node orig)
877	{
878	struct jabber_data *jd = ic->proto_data;
879	struct xt_node *id;
880
881	if ((id = xt_find_path(node, "query/identity"))) {
882	char cat, type, *name;
883
884	if (!(cat = xt_find_attr(id, "category")) \|\|
885	!(type = xt_find_attr(id, "type")) \|\|
886	!(name = xt_find_attr(id, "name"))) {
887	return XT_HANDLED;
888	}
889
890	if (strcmp(cat, "server") == 0 && strcmp(type, "im") == 0 &&
891	strstr(name, "Google") != NULL) {
892	jd->flags \|= JFLAG_GTALK;
893	}
894	}
895
896	return XT_HANDLED;
897	}

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