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source: protocols/twitter/twitter.c @ 8256ad5

Last change on this file since 8256ad5 was c203533, checked in by dequis <dx@…>, at 2014-09-27T14:54:35Z

twitter: Add support for The United States of America

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1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Simple module to facilitate twitter functionality. *
5	* *
6	* Copyright 2009-2010 Geert Mulders <g.c.w.m.mulders@gmail.com> *
7	* Copyright 2010-2013 Wilmer van der Gaast <wilmer@gaast.net> *
8	* *
9	* This library is free software; you can redistribute it and/or *
10	* modify it under the terms of the GNU Lesser General Public *
11	* License as published by the Free Software Foundation, version *
12	* 2.1. *
13	* *
14	* This library is distributed in the hope that it will be useful, *
15	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
17	* Lesser General Public License for more details. *
18	* *
19	* You should have received a copy of the GNU Lesser General Public License *
20	* along with this library; if not, write to the Free Software Foundation, *
21	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
22	* *
23	****************************************************************************/
24
25	#include "nogaim.h"
26	#include "oauth.h"
27	#include "twitter.h"
28	#include "twitter_http.h"
29	#include "twitter_lib.h"
30	#include "url.h"
31
32	GSList *twitter_connections = NULL;
33	/**
34	* Main loop function
35	*/
36	gboolean twitter_main_loop(gpointer data, gint fd, b_input_condition cond)
37	{
38	struct im_connection *ic = data;
39
40	// Check if we are still logged in...
41	if (!g_slist_find(twitter_connections, ic))
42	return FALSE;
43
44	// Do stuff..
45	return twitter_get_timeline(ic, -1) &&
46	((ic->flags & OPT_LOGGED_IN) == OPT_LOGGED_IN);
47	}
48
49	static void twitter_main_loop_start(struct im_connection *ic)
50	{
51	struct twitter_data *td = ic->proto_data;
52
53	/* Create the room now that we "logged in". */
54	if (td->flags & TWITTER_MODE_CHAT)
55	twitter_groupchat_init(ic);
56
57	imcb_log(ic, "Getting initial statuses");
58
59	// Run this once. After this queue the main loop function (or open the
60	// stream if available).
61	twitter_main_loop(ic, -1, 0);
62
63	if (set_getbool(&ic->acc->set, "stream")) {
64	/* That fetch was just to get backlog, the stream will give
65	us the rest. \o/ */
66	twitter_open_stream(ic);
67
68	/* Stream sends keepalives (empty lines) or actual data at
69	least twice a minute. Disconnect if this stops. */
70	ic->flags \|= OPT_PONGS;
71	} else {
72	/* Not using the streaming API, so keep polling the old-
73	fashioned way. :-( */
74	td->main_loop_id =
75	b_timeout_add(set_getint(&ic->acc->set, "fetch_interval") * 1000,
76	twitter_main_loop, ic);
77	}
78	}
79
80	struct groupchat twitter_groupchat_init(struct im_connection ic)
81	{
82	char *name_hint;
83	struct groupchat *gc;
84	struct twitter_data *td = ic->proto_data;
85	GSList *l;
86
87	if (td->timeline_gc)
88	return td->timeline_gc;
89
90	td->timeline_gc = gc = imcb_chat_new(ic, "twitter/timeline");
91
92	name_hint = g_strdup_printf("%s_%s", td->prefix, ic->acc->user);
93	imcb_chat_name_hint(gc, name_hint);
94	g_free(name_hint);
95
96	for (l = ic->bee->users; l; l = l->next) {
97	bee_user_t *bu = l->data;
98	if (bu->ic == ic)
99	imcb_chat_add_buddy(gc, bu->handle);
100	}
101	imcb_chat_add_buddy(gc, ic->acc->user);
102
103	return gc;
104	}
105
106	static void twitter_oauth_start(struct im_connection *ic);
107
108	void twitter_login_finish(struct im_connection *ic)
109	{
110	struct twitter_data *td = ic->proto_data;
111
112	td->flags &= ~TWITTER_DOING_TIMELINE;
113
114	if (set_getbool(&ic->acc->set, "oauth") && !td->oauth_info)
115	twitter_oauth_start(ic);
116	else if (!(td->flags & TWITTER_MODE_ONE) &&
117	!(td->flags & TWITTER_HAVE_FRIENDS)) {
118	imcb_log(ic, "Getting contact list");
119	twitter_get_friends_ids(ic, -1);
120	} else
121	twitter_main_loop_start(ic);
122	}
123
124	static const struct oauth_service twitter_oauth = {
125	"https://api.twitter.com/oauth/request_token",
126	"https://api.twitter.com/oauth/access_token",
127	"https://api.twitter.com/oauth/authorize",
128	.consumer_key = "xsDNKJuNZYkZyMcu914uEA",
129	.consumer_secret = "FCxqcr0pXKzsF9ajmP57S3VQ8V6Drk4o2QYtqMcOszo",
130	};
131
132	static const struct oauth_service identica_oauth = {
133	"https://identi.ca/api/oauth/request_token",
134	"https://identi.ca/api/oauth/access_token",
135	"https://identi.ca/api/oauth/authorize",
136	.consumer_key = "e147ff789fcbd8a5a07963afbb43f9da",
137	.consumer_secret = "c596267f277457ec0ce1ab7bb788d828",
138	};
139
140	static gboolean twitter_oauth_callback(struct oauth_info *info);
141
142	static const struct oauth_service get_oauth_service(struct im_connection ic)
143	{
144	struct twitter_data *td = ic->proto_data;
145
146	if (strstr(td->url_host, "identi.ca"))
147	return &identica_oauth;
148	else
149	return &twitter_oauth;
150
151	/* Could add more services, or allow configuring your own base URL +
152	API keys. */
153	}
154
155	static void twitter_oauth_start(struct im_connection *ic)
156	{
157	struct twitter_data *td = ic->proto_data;
158	const char *url = set_getstr(&ic->acc->set, "base_url");
159
160	imcb_log(ic, "Requesting OAuth request token");
161
162	if (!strstr(url, "twitter.com") && !strstr(url, "identi.ca"))
163	imcb_log(ic, "Warning: OAuth only works with identi.ca and "
164	"Twitter.");
165
166	td->oauth_info = oauth_request_token(get_oauth_service(ic), twitter_oauth_callback, ic);
167
168	/* We need help from the user to complete OAuth login, so don't time
169	out on this login. */
170	ic->flags \|= OPT_SLOW_LOGIN;
171	}
172
173	static gboolean twitter_oauth_callback(struct oauth_info *info)
174	{
175	struct im_connection *ic = info->data;
176	struct twitter_data *td;
177
178	if (!g_slist_find(twitter_connections, ic))
179	return FALSE;
180
181	td = ic->proto_data;
182	if (info->stage == OAUTH_REQUEST_TOKEN) {
183	char name, msg;
184
185	if (info->request_token == NULL) {
186	imcb_error(ic, "OAuth error: %s", twitter_parse_error(info->http));
187	imc_logout(ic, TRUE);
188	return FALSE;
189	}
190
191	name = g_strdup_printf("%s_%s", td->prefix, ic->acc->user);
192	msg = g_strdup_printf("To finish OAuth authentication, please visit "
193	"%s and respond with the resulting PIN code.",
194	info->auth_url);
195	imcb_buddy_msg(ic, name, msg, 0, 0);
196	g_free(name);
197	g_free(msg);
198	} else if (info->stage == OAUTH_ACCESS_TOKEN) {
199	const char *sn;
200
201	if (info->token == NULL \|\| info->token_secret == NULL) {
202	imcb_error(ic, "OAuth error: %s", twitter_parse_error(info->http));
203	imc_logout(ic, TRUE);
204	return FALSE;
205	}
206
207	if ((sn = oauth_params_get(&info->params, "screen_name"))) {
208	if (ic->acc->prpl->handle_cmp(sn, ic->acc->user) != 0)
209	imcb_log(ic, "Warning: You logged in via OAuth as %s "
210	"instead of %s.", sn, ic->acc->user);
211	g_free(td->user);
212	td->user = g_strdup(sn);
213	}
214
215	/* IM mods didn't do this so far and it's ugly but I should
216	be able to get away with it... */
217	g_free(ic->acc->pass);
218	ic->acc->pass = oauth_to_string(info);
219
220	twitter_login_finish(ic);
221	}
222
223	return TRUE;
224	}
225
226	int twitter_url_len_diff(gchar *msg, unsigned int target_len)
227	{
228	int url_len_diff = 0;
229
230	static GRegex *regex = NULL;
231	GMatchInfo *match_info;
232
233	if (regex == NULL)
234	regex = g_regex_new("(^\|\\s)(http(s)?://[^\\s$]+)", 0, 0, NULL);
235
236	g_regex_match(regex, msg, 0, &match_info);
237	while (g_match_info_matches(match_info)) {
238	gchar *url = g_match_info_fetch(match_info, 2);
239	url_len_diff += target_len - g_utf8_strlen(url, -1);
240	/* Add another character for https://t.co/... URLs */
241	if (g_match_info_fetch(match_info, 3) != NULL)
242	url_len_diff += 1;
243	g_free(url);
244	g_match_info_next(match_info, NULL);
245	}
246	g_match_info_free(match_info);
247
248	return url_len_diff;
249	}
250
251	static gboolean twitter_length_check(struct im_connection ic, gchar msg)
252	{
253	int max = set_getint(&ic->acc->set, "message_length"), len;
254	int target_len = set_getint(&ic->acc->set, "target_url_length");
255	int url_len_diff = 0;
256
257	if (target_len > 0)
258	url_len_diff = twitter_url_len_diff(msg, target_len);
259
260	if (max == 0 \|\| (len = g_utf8_strlen(msg, -1) + url_len_diff) <= max)
261	return TRUE;
262
263	twitter_log(ic, "Maximum message length exceeded: %d > %d", len, max);
264
265	return FALSE;
266	}
267
268	static char set_eval_commands(set_t set, char *value)
269	{
270	if (g_strcasecmp(value, "strict") == 0 )
271	return value;
272	else
273	return set_eval_bool(set, value);
274	}
275
276	static char set_eval_mode(set_t set, char *value)
277	{
278	if (g_strcasecmp(value, "one") == 0 \|\|
279	g_strcasecmp(value, "many") == 0 \|\| g_strcasecmp(value, "chat") == 0)
280	return value;
281	else
282	return NULL;
283	}
284
285	static void twitter_init(account_t * acc)
286	{
287	set_t *s;
288	char *def_url;
289	char *def_tul;
290	char *def_mentions;
291
292	if (strcmp(acc->prpl->name, "twitter") == 0) {
293	def_url = TWITTER_API_URL;
294	def_tul = "22";
295	def_mentions = "true";
296	} else { /* if( strcmp( acc->prpl->name, "identica" ) == 0 ) */
297	def_url = IDENTICA_API_URL;
298	def_tul = "0";
299	def_mentions = "false";
300	}
301
302	s = set_add(&acc->set, "auto_reply_timeout", "10800", set_eval_int, acc);
303
304	s = set_add(&acc->set, "base_url", def_url, NULL, acc);
305	s->flags \|= ACC_SET_OFFLINE_ONLY;
306
307	s = set_add(&acc->set, "commands", "true", set_eval_commands, acc);
308
309	s = set_add(&acc->set, "fetch_interval", "60", set_eval_int, acc);
310	s->flags \|= ACC_SET_OFFLINE_ONLY;
311
312	s = set_add(&acc->set, "fetch_mentions", def_mentions, set_eval_bool, acc);
313
314	s = set_add(&acc->set, "message_length", "140", set_eval_int, acc);
315
316	s = set_add(&acc->set, "target_url_length", def_tul, set_eval_int, acc);
317
318	s = set_add(&acc->set, "mode", "chat", set_eval_mode, acc);
319	s->flags \|= ACC_SET_OFFLINE_ONLY;
320
321	s = set_add(&acc->set, "oauth", "true", set_eval_oauth, acc);
322
323	s = set_add(&acc->set, "show_ids", "true", set_eval_bool, acc);
324
325	s = set_add(&acc->set, "show_old_mentions", "0", set_eval_int, acc);
326
327	s = set_add(&acc->set, "strip_newlines", "false", set_eval_bool, acc);
328
329	if (strcmp(acc->prpl->name, "twitter") == 0) {
330	s = set_add(&acc->set, "stream", "true", set_eval_bool, acc);
331	s->flags \|= ACC_SET_OFFLINE_ONLY;
332	}
333	}
334
335	/**
336	* Login method. Since the twitter API works with separate HTTP request we
337	* only save the user and pass to the twitter_data object.
338	*/
339	static void twitter_login(account_t * acc)
340	{
341	struct im_connection *ic = imcb_new(acc);
342	struct twitter_data *td;
343	char name[strlen(acc->user) + 9];
344	url_t url;
345	char *s;
346
347	if (!url_set(&url, set_getstr(&ic->acc->set, "base_url")) \|\|
348	(url.proto != PROTO_HTTP && url.proto != PROTO_HTTPS)) {
349	imcb_error(ic, "Incorrect API base URL: %s", set_getstr(&ic->acc->set, "base_url"));
350	imc_logout(ic, FALSE);
351	return;
352	}
353
354	if (!strstr(url.host, "twitter.com") &&
355	set_getbool(&ic->acc->set, "stream")) {
356	imcb_error(ic, "Warning: The streaming API is only supported by Twitter, "
357	"and you seem to be connecting to a different service.");
358	}
359
360	imcb_log(ic, "Connecting");
361
362	twitter_connections = g_slist_append(twitter_connections, ic);
363	td = g_new0(struct twitter_data, 1);
364	ic->proto_data = td;
365	td->user = g_strdup(acc->user);
366
367	td->url_ssl = url.proto == PROTO_HTTPS;
368	td->url_port = url.port;
369	td->url_host = g_strdup(url.host);
370	if (strcmp(url.file, "/") != 0)
371	td->url_path = g_strdup(url.file);
372	else {
373	td->url_path = g_strdup("");
374	if (g_str_has_suffix(url.host, "twitter.com"))
375	/* May fire for people who turned on HTTPS. */
376	imcb_error(ic, "Warning: Twitter requires a version number in API calls "
377	"now. Try resetting the base_url account setting.");
378	}
379
380	/* Hacky string mangling: Turn identi.ca into identi.ca and api.twitter.com
381	into twitter, and try to be sensible if we get anything else. */
382	td->prefix = g_strdup(url.host);
383	if (g_str_has_suffix(td->prefix, ".com"))
384	td->prefix[strlen(url.host) - 4] = '\0';
385	if ((s = strrchr(td->prefix, '.')) && strlen(s) > 4) {
386	/* If we have at least 3 chars after the last dot, cut off the rest.
387	(mostly a www/api prefix or sth) */
388	s = g_strdup(s + 1);
389	g_free(td->prefix);
390	td->prefix = s;
391	}
392
393	if (strstr(acc->pass, "oauth_token="))
394	td->oauth_info = oauth_from_string(acc->pass, get_oauth_service(ic));
395
396	sprintf(name, "%s_%s", td->prefix, acc->user);
397	imcb_add_buddy(ic, name, NULL);
398	imcb_buddy_status(ic, name, OPT_LOGGED_IN, NULL, NULL);
399
400	td->log = g_new0(struct twitter_log_data, TWITTER_LOG_LENGTH);
401	td->log_id = -1;
402
403	s = set_getstr(&ic->acc->set, "mode");
404	if (g_strcasecmp(s, "one") == 0)
405	td->flags \|= TWITTER_MODE_ONE;
406	else if (g_strcasecmp(s, "many") == 0)
407	td->flags \|= TWITTER_MODE_MANY;
408	else
409	td->flags \|= TWITTER_MODE_CHAT;
410
411	twitter_login_finish(ic);
412	}
413
414	/**
415	* Logout method. Just free the twitter_data.
416	*/
417	static void twitter_logout(struct im_connection *ic)
418	{
419	struct twitter_data *td = ic->proto_data;
420
421	// Set the status to logged out.
422	ic->flags &= ~OPT_LOGGED_IN;
423
424	// Remove the main_loop function from the function queue.
425	b_event_remove(td->main_loop_id);
426
427	if (td->timeline_gc)
428	imcb_chat_free(td->timeline_gc);
429
430	if (td) {
431	http_close(td->stream);
432	oauth_info_free(td->oauth_info);
433	g_free(td->user);
434	g_free(td->prefix);
435	g_free(td->url_host);
436	g_free(td->url_path);
437	g_free(td->log);
438	g_free(td);
439	}
440
441	twitter_connections = g_slist_remove(twitter_connections, ic);
442	}
443
444	static void twitter_handle_command(struct im_connection ic, char message);
445
446	/**
447	*
448	*/
449	static int twitter_buddy_msg(struct im_connection ic, char who, char *message, int away)
450	{
451	struct twitter_data *td = ic->proto_data;
452	int plen = strlen(td->prefix);
453
454	if (g_strncasecmp(who, td->prefix, plen) == 0 && who[plen] == '_' &&
455	g_strcasecmp(who + plen + 1, ic->acc->user) == 0) {
456	if (set_getbool(&ic->acc->set, "oauth") &&
457	td->oauth_info && td->oauth_info->token == NULL) {
458	char pin[strlen(message) + 1], *s;
459
460	strcpy(pin, message);
461	for (s = pin + sizeof(pin) - 2; s > pin && isspace(*s); s--)
462	*s = '\0';
463	for (s = pin; s && isspace(s); s++) {
464	}
465
466	if (!oauth_access_token(s, td->oauth_info)) {
467	imcb_error(ic, "OAuth error: %s",
468	"Failed to send access token request");
469	imc_logout(ic, TRUE);
470	return FALSE;
471	}
472	} else
473	twitter_handle_command(ic, message);
474	} else {
475	twitter_direct_messages_new(ic, who, message);
476	}
477	return (0);
478	}
479
480	static void twitter_get_info(struct im_connection ic, char who)
481	{
482	}
483
484	static void twitter_add_buddy(struct im_connection ic, char who, char *group)
485	{
486	twitter_friendships_create_destroy(ic, who, 1);
487	}
488
489	static void twitter_remove_buddy(struct im_connection ic, char who, char *group)
490	{
491	twitter_friendships_create_destroy(ic, who, 0);
492	}
493
494	static void twitter_chat_msg(struct groupchat c, char message, int flags)
495	{
496	if (c && message)
497	twitter_handle_command(c->ic, message);
498	}
499
500	static void twitter_chat_invite(struct groupchat c, char who, char *message)
501	{
502	}
503
504	static void twitter_chat_leave(struct groupchat *c)
505	{
506	struct twitter_data *td = c->ic->proto_data;
507
508	if (c != td->timeline_gc)
509	return; /* WTF? */
510
511	/* If the user leaves the channel: Fine. Rejoin him/her once new
512	tweets come in. */
513	imcb_chat_free(td->timeline_gc);
514	td->timeline_gc = NULL;
515	}
516
517	static void twitter_keepalive(struct im_connection *ic)
518	{
519	}
520
521	static void twitter_add_permit(struct im_connection ic, char who)
522	{
523	}
524
525	static void twitter_rem_permit(struct im_connection ic, char who)
526	{
527	}
528
529	static void twitter_add_deny(struct im_connection ic, char who)
530	{
531	}
532
533	static void twitter_rem_deny(struct im_connection ic, char who)
534	{
535	}
536
537	//static char twitter_set_display_name( set_t set, char *value )
538	//{
539	// return value;
540	//}
541
542	static void twitter_buddy_data_add(struct bee_user *bu)
543	{
544	bu->data = g_new0(struct twitter_user_data, 1);
545	}
546
547	static void twitter_buddy_data_free(struct bee_user *bu)
548	{
549	g_free(bu->data);
550	}
551
552	/** Convert the given bitlbee tweet ID, bitlbee username, or twitter tweet ID
553	* into a twitter tweet ID.
554	*
555	* Returns 0 if the user provides garbage.
556	*/
557	static guint64 twitter_message_id_from_command_arg(struct im_connection ic, char arg, bee_user_t **bu_) {
558	struct twitter_data *td = ic->proto_data;
559	struct twitter_user_data *tud;
560	bee_user_t *bu = NULL;
561	guint64 id = 0;
562
563	if (bu_)
564	*bu_ = NULL;
565	if (!arg \|\| !arg[0])
566	return 0;
567
568	if (arg[0] != '#' && (bu = bee_user_by_handle(ic->bee, ic, arg))) {
569	if ((tud = bu->data))
570	id = tud->last_id;
571	} else {
572	if (arg[0] == '#')
573	arg++;
574	if (sscanf(arg, "%" G_GINT64_MODIFIER "x", &id) == 1 &&
575	id < TWITTER_LOG_LENGTH) {
576	bu = td->log[id].bu;
577	id = td->log[id].id;
578	/* Beware of dangling pointers! */
579	if (!g_slist_find(ic->bee->users, bu))
580	bu = NULL;
581	} else if (sscanf(arg, "%" G_GINT64_MODIFIER "d", &id) == 1) {
582	/* Allow normal tweet IDs as well; not a very useful
583	feature but it's always been there. Just ignore
584	very low IDs to avoid accidents. */
585	if (id < 1000000)
586	id = 0;
587	}
588	}
589	if (bu_)
590	*bu_ = bu;
591	return id;
592	}
593
594	static void twitter_handle_command(struct im_connection ic, char message)
595	{
596	struct twitter_data *td = ic->proto_data;
597	char cmds, cmd, new = NULL;
598	guint64 in_reply_to = 0, id;
599	gboolean allow_post =
600	g_strcasecmp(set_getstr(&ic->acc->set, "commands"), "strict") != 0;
601	bee_user_t *bu = NULL;
602
603	cmds = g_strdup(message);
604	cmd = split_command_parts(cmds, 2);
605
606	if (cmd[0] == NULL) {
607	goto eof;
608	} else if (!set_getbool(&ic->acc->set, "commands") && allow_post) {
609	/* Not supporting commands if "commands" is set to true/strict. */
610	} else if (g_strcasecmp(cmd[0], "undo") == 0) {
611	if (cmd[1] == NULL)
612	twitter_status_destroy(ic, td->last_status_id);
613	else if ((id = twitter_message_id_from_command_arg(ic, cmd[1], NULL)))
614	twitter_status_destroy(ic, id);
615	else
616	twitter_log(ic, "Could not undo last action");
617
618	goto eof;
619	} else if ((g_strcasecmp(cmd[0], "favourite") == 0 \|\|
620	g_strcasecmp(cmd[0], "favorite") == 0 \|\|
621	g_strcasecmp(cmd[0], "fav") == 0) && cmd[1]) {
622	if ((id = twitter_message_id_from_command_arg(ic, cmd[1], NULL))) {
623	twitter_favourite_tweet(ic, id);
624	} else {
625	twitter_log(ic, "Please provide a message ID or username.");
626	}
627	goto eof;
628	} else if (g_strcasecmp(cmd[0], "follow") == 0 && cmd[1]) {
629	twitter_add_buddy(ic, cmd[1], NULL);
630	goto eof;
631	} else if (g_strcasecmp(cmd[0], "unfollow") == 0 && cmd[1]) {
632	twitter_remove_buddy(ic, cmd[1], NULL);
633	goto eof;
634	} else if ((g_strcasecmp(cmd[0], "report") == 0 \|\|
635	g_strcasecmp(cmd[0], "spam") == 0) && cmd[1]) {
636	char *screen_name;
637
638	/* Report nominally works on users but look up the user who
639	posted the given ID if the user wants to do it that way */
640	twitter_message_id_from_command_arg(ic, cmd[1], &bu);
641	if (bu)
642	screen_name = bu->handle;
643	else
644	screen_name = cmd[1];
645
646	twitter_report_spam(ic, screen_name);
647	goto eof;
648	} else if (g_strcasecmp(cmd[0], "rt") == 0 && cmd[1]) {
649	id = twitter_message_id_from_command_arg(ic, cmd[1], NULL);
650
651	td->last_status_id = 0;
652	if (id)
653	twitter_status_retweet(ic, id);
654	else
655	twitter_log(ic, "User `%s' does not exist or didn't "
656	"post any statuses recently", cmd[1]);
657
658	goto eof;
659	} else if (g_strcasecmp(cmd[0], "reply") == 0 && cmd[1] && cmd[2]) {
660	id = twitter_message_id_from_command_arg(ic, cmd[1], &bu);
661	if (!id \|\| !bu) {
662	twitter_log(ic, "User `%s' does not exist or didn't "
663	"post any statuses recently", cmd[1]);
664	goto eof;
665	}
666	message = new = g_strdup_printf("@%s %s", bu->handle, cmd[2]);
667	in_reply_to = id;
668	allow_post = TRUE;
669	} else if (g_strcasecmp(cmd[0], "post") == 0) {
670	message += 5;
671	allow_post = TRUE;
672	}
673
674	if (allow_post) {
675	char *s;
676
677	if (!twitter_length_check(ic, message))
678	goto eof;
679
680	s = cmd[0] + strlen(cmd[0]) - 1;
681	if (!new && s > cmd[0] && (s == ':' \|\| s == ',')) {
682	*s = '\0';
683
684	if ((bu = bee_user_by_handle(ic->bee, ic, cmd[0]))) {
685	struct twitter_user_data *tud = bu->data;
686
687	new = g_strdup_printf("@%s %s", bu->handle,
688	message + (s - cmd[0]) + 2);
689	message = new;
690
691	if (time(NULL) < tud->last_time +
692	set_getint(&ic->acc->set, "auto_reply_timeout"))
693	in_reply_to = tud->last_id;
694	}
695	}
696
697	/* If the user runs undo between this request and its response
698	this would delete the second-last Tweet. Prevent that. */
699	td->last_status_id = 0;
700	twitter_post_status(ic, message, in_reply_to);
701	} else {
702	twitter_log(ic, "Unknown command: %s", cmd[0]);
703	}
704	eof:
705	g_free(new);
706	g_free(cmds);
707	}
708
709	void twitter_log(struct im_connection ic, char format, ... )
710	{
711	struct twitter_data *td = ic->proto_data;
712	va_list params;
713	char *text;
714
715	va_start(params, format);
716	text = g_strdup_vprintf(format, params);
717	va_end(params);
718
719	if (td->timeline_gc)
720	imcb_chat_log(td->timeline_gc, "%s", text);
721	else
722	imcb_log(ic, "%s", text);
723
724	g_free(text);
725	}
726
727
728	void twitter_initmodule()
729	{
730	struct prpl *ret = g_new0(struct prpl, 1);
731
732	ret->options = OPT_NOOTR;
733	ret->name = "twitter";
734	ret->login = twitter_login;
735	ret->init = twitter_init;
736	ret->logout = twitter_logout;
737	ret->buddy_msg = twitter_buddy_msg;
738	ret->get_info = twitter_get_info;
739	ret->add_buddy = twitter_add_buddy;
740	ret->remove_buddy = twitter_remove_buddy;
741	ret->chat_msg = twitter_chat_msg;
742	ret->chat_invite = twitter_chat_invite;
743	ret->chat_leave = twitter_chat_leave;
744	ret->keepalive = twitter_keepalive;
745	ret->add_permit = twitter_add_permit;
746	ret->rem_permit = twitter_rem_permit;
747	ret->add_deny = twitter_add_deny;
748	ret->rem_deny = twitter_rem_deny;
749	ret->buddy_data_add = twitter_buddy_data_add;
750	ret->buddy_data_free = twitter_buddy_data_free;
751	ret->handle_cmp = g_strcasecmp;
752
753	register_protocol(ret);
754
755	/* And an identi.ca variant: */
756	ret = g_memdup(ret, sizeof(struct prpl));
757	ret->name = "identica";
758	register_protocol(ret);
759	}

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