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mark PurpleImageClass as private
[pidgin-git.git] / libpurple / protocols / simple / simple.c
blob759905db861376615457cdc42b3ceb6209ed5562
1 /**
2 * @file simple.c
3 *
4 * purple
5 *
6 * Copyright (C) 2005 Thomas Butter <butter@uni-mannheim.de>
7 *
8 * ***
9 * Thanks to Google's Summer of Code Program and the helpful mentors
10 * ***
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
25 */
26
27 #include "internal.h"
28
29 #include "accountopt.h"
30 #include "buddylist.h"
31 #include "conversation.h"
32 #include "core.h"
33 #include "debug.h"
34 #include "notify.h"
35 #include "protocol.h"
36 #include "plugins.h"
37 #include "util.h"
38 #include "version.h"
39 #include "network.h"
40 #include "xmlnode.h"
41
42 #include "simple.h"
43 #include "sipmsg.h"
44 #include "ntlm.h"
45
46 static PurpleProtocol *my_protocol = NULL;
47
48 static gchar *gentag(void) {
49 return g_strdup_printf("%04d%04d", g_random_int(), g_random_int());
50 }
51
52 static char *genbranch(void) {
53 return g_strdup_printf("z9hG4bK%04X%04X%04X%04X%04X",
54 g_random_int(), g_random_int(), g_random_int(),
55 g_random_int(), g_random_int());
56 }
57
58 static char *gencallid(void) {
59 return g_strdup_printf("%04Xg%04Xa%04Xi%04Xm%04Xt%04Xb%04Xx%04Xx",
60 g_random_int(), g_random_int(), g_random_int(),
61 g_random_int(), g_random_int(), g_random_int(),
62 g_random_int(), g_random_int());
63 }
64
65 static const char *simple_list_icon(PurpleAccount *a, PurpleBuddy *b) {
66 return "simple";
67 }
68
69 static gint
70 simple_uri_handler_find_account(PurpleAccount *account,
71 G_GNUC_UNUSED gconstpointer data)
72 {
73 const gchar *protocol_id;
74
75 protocol_id = purple_account_get_protocol_id(account);
76
77 if (purple_strequal(protocol_id, "prpl-simple") &&
78 purple_account_is_connected(account)) {
79 return 0;
80 } else {
81 return -1;
82 }
83 }
84
85 static gboolean
86 simple_uri_handler(const gchar *scheme, const gchar *screenname,
87 GHashTable *params)
88 {
89 GList *accounts;
90 GList *account_node;
91 PurpleIMConversation *im;
92
93 g_return_val_if_fail(screenname != NULL, FALSE);
94
95 if (!purple_strequal(scheme, "sip")) {
96 return FALSE;
97 }
98
99 if (screenname[0] == '\0') {
100 purple_debug_warning("simple",
101 "Invalid empty screenname in URI");
102 return FALSE;
103 }
104
105 /* Find online SIMPLE account */
106 accounts = purple_accounts_get_all();
107 account_node = g_list_find_custom(
108 accounts, NULL, (GCompareFunc)simple_uri_handler_find_account);
109
110 if (account_node == NULL) {
111 return FALSE;
112 }
113
114 im = purple_im_conversation_new(account_node->data, screenname);
115 purple_conversation_present(PURPLE_CONVERSATION(im));
116
117 return TRUE;
118 }
119
120 static void simple_keep_alive(PurpleConnection *gc) {
121 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
122 if(sip->udp) { /* in case of UDP send a packet only with a 0 byte to
123 remain in the NAT table */
124 gchar buf[2] = {0, 0};
125 purple_debug_info("simple", "sending keep alive\n");
126 if (sendto(sip->fd, buf, 1, 0,
127 (struct sockaddr*)&sip->serveraddr,
128 sizeof(struct sockaddr_in)) != 1)
129 {
130 purple_debug_error("simple", "failed sending keep alive\n");
131 }
132 }
133 return;
134 }
135
136 static gboolean process_register_response(struct simple_account_data *sip, struct sipmsg *msg, struct transaction *tc);
137 static void send_notify(struct simple_account_data *sip, struct simple_watcher *);
138
139 static void send_open_publish(struct simple_account_data *sip);
140 static void send_closed_publish(struct simple_account_data *sip);
141
142 static void do_notifies(struct simple_account_data *sip) {
143 GSList *tmp = sip->watcher;
144 purple_debug_info("simple", "do_notifies()\n");
145 if((sip->republish != -1) || sip->republish < time(NULL)) {
146 if(purple_account_get_bool(sip->account, "dopublish", TRUE)) {
147 send_open_publish(sip);
148 }
149 }
150
151 while(tmp) {
152 purple_debug_info("simple", "notifying %s\n", ((struct simple_watcher*)tmp->data)->name);
153 send_notify(sip, tmp->data);
154 tmp = tmp->next;
155 }
156 }
157
158 static void simple_set_status(PurpleAccount *account, PurpleStatus *status) {
159 PurpleConnection *gc = purple_account_get_connection(account);
160 PurpleStatusPrimitive primitive = purple_status_type_get_primitive(purple_status_get_status_type(status));
161 struct simple_account_data *sip = NULL;
162
163 if (!purple_status_is_active(status))
164 return;
165
166 if (gc)
167 sip = purple_connection_get_protocol_data(gc);
168
169 if (sip)
170 {
171 g_free(sip->status);
172 if (primitive == PURPLE_STATUS_AVAILABLE)
173 sip->status = g_strdup("available");
174 else
175 sip->status = g_strdup("busy");
176
177 do_notifies(sip);
178 }
179 }
180
181 static struct sip_connection *connection_find(struct simple_account_data *sip, int fd) {
182 struct sip_connection *ret = NULL;
183 GSList *entry = sip->openconns;
184 while(entry) {
185 ret = entry->data;
186 if(ret->fd == fd) return ret;
187 entry = entry->next;
188 }
189 return NULL;
190 }
191
192 static struct simple_watcher *watcher_find(struct simple_account_data *sip,
193 const gchar *name) {
194 struct simple_watcher *watcher;
195 GSList *entry = sip->watcher;
196 while(entry) {
197 watcher = entry->data;
198 if(purple_strequal(name, watcher->name)) return watcher;
199 entry = entry->next;
200 }
201 return NULL;
202 }
203
204 static struct simple_watcher *watcher_create(struct simple_account_data *sip,
205 const gchar *name, const gchar *callid, const gchar *ourtag,
206 const gchar *theirtag, gboolean needsxpidf) {
207 struct simple_watcher *watcher = g_new0(struct simple_watcher, 1);
208 watcher->name = g_strdup(name);
209 watcher->dialog.callid = g_strdup(callid);
210 watcher->dialog.ourtag = g_strdup(ourtag);
211 watcher->dialog.theirtag = g_strdup(theirtag);
212 watcher->needsxpidf = needsxpidf;
213 sip->watcher = g_slist_append(sip->watcher, watcher);
214 return watcher;
215 }
216
217 static void watcher_remove(struct simple_account_data *sip, const gchar *name) {
218 struct simple_watcher *watcher = watcher_find(sip, name);
219 sip->watcher = g_slist_remove(sip->watcher, watcher);
220 g_free(watcher->name);
221 g_free(watcher->dialog.callid);
222 g_free(watcher->dialog.ourtag);
223 g_free(watcher->dialog.theirtag);
224 g_free(watcher);
225 }
226
227 static struct sip_connection *connection_create(struct simple_account_data *sip, int fd) {
228 struct sip_connection *ret = g_new0(struct sip_connection, 1);
229 ret->fd = fd;
230 sip->openconns = g_slist_append(sip->openconns, ret);
231 return ret;
232 }
233
234 static void connection_remove(struct simple_account_data *sip, int fd) {
235 struct sip_connection *conn = connection_find(sip, fd);
236 sip->openconns = g_slist_remove(sip->openconns, conn);
237 if(conn->inputhandler) purple_input_remove(conn->inputhandler);
238 g_free(conn->inbuf);
239 g_free(conn);
240 }
241
242 static void connection_free_all(struct simple_account_data *sip) {
243 struct sip_connection *ret = NULL;
244 GSList *entry = sip->openconns;
245 while(entry) {
246 ret = entry->data;
247 connection_remove(sip, ret->fd);
248 entry = sip->openconns;
249 }
250 }
251
252 static void simple_add_buddy(PurpleConnection *gc, PurpleBuddy *buddy, PurpleGroup *group, const char *message)
253 {
254 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
255 struct simple_buddy *b;
256 const char *name = purple_buddy_get_name(buddy);
257 if(strncmp(name, "sip:", 4)) {
258 gchar *buf = g_strdup_printf("sip:%s", name);
259 purple_buddy_set_name(buddy, buf);
260 g_free(buf);
261 }
262 if(!g_hash_table_lookup(sip->buddies, name)) {
263 b = g_new0(struct simple_buddy, 1);
264 purple_debug_info("simple", "simple_add_buddy %s\n", name);
265 b->name = g_strdup(name);
266 g_hash_table_insert(sip->buddies, b->name, b);
267 } else {
268 purple_debug_info("simple", "buddy %s already in internal list\n", name);
269 }
270 }
271
272 static void simple_get_buddies(PurpleConnection *gc) {
273 GSList *buddies;
274 PurpleAccount *account;
275
276 purple_debug_info("simple", "simple_get_buddies\n");
277
278 account = purple_connection_get_account(gc);
279 buddies = purple_blist_find_buddies(account, NULL);
280 while (buddies) {
281 PurpleBuddy *buddy = buddies->data;
282 simple_add_buddy(gc, buddy, purple_buddy_get_group(buddy), NULL);
283
284 buddies = g_slist_delete_link(buddies, buddies);
285 }
286 }
287
288 static void simple_remove_buddy(PurpleConnection *gc, PurpleBuddy *buddy, PurpleGroup *group)
289 {
290 const char *name = purple_buddy_get_name(buddy);
291 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
292 struct simple_buddy *b = g_hash_table_lookup(sip->buddies, name);
293 g_hash_table_remove(sip->buddies, name);
294 g_free(b->name);
295 g_free(b);
296 }
297
298 static GList *simple_status_types(PurpleAccount *acc) {
299 PurpleStatusType *type;
300 GList *types = NULL;
301
302 type = purple_status_type_new_with_attrs(
303 PURPLE_STATUS_AVAILABLE, NULL, NULL, TRUE, TRUE, FALSE,
304 "message", _("Message"), purple_value_new(G_TYPE_STRING),
305 NULL);
306 types = g_list_append(types, type);
307
308 type = purple_status_type_new_full(
309 PURPLE_STATUS_OFFLINE, NULL, NULL, TRUE, TRUE, FALSE);
310 types = g_list_append(types, type);
311
312 return types;
313 }
314
315 static gchar *auth_header(struct simple_account_data *sip,
316 struct sip_auth *auth, const gchar *method, const gchar *target) {
317 gchar noncecount[9];
318 gchar *response;
319 gchar *ret;
320 const char *authuser;
321
322 authuser = purple_account_get_string(sip->account, "authuser", sip->username);
323
324 if(!authuser || strlen(authuser) < 1) {
325 authuser = sip->username;
326 }
327
328 if(auth->type == 1) { /* Digest */
329 sprintf(noncecount, "%08d", auth->nc++);
330 response = purple_http_digest_calculate_response(
331 "md5", method, target, NULL, NULL,
332 auth->nonce, noncecount, NULL, auth->digest_session_key);
333 purple_debug(PURPLE_DEBUG_MISC, "simple", "response %s\n", response);
334
335 ret = g_strdup_printf("Digest username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", nc=\"%s\", response=\"%s\"", authuser, auth->realm, auth->nonce, target, noncecount, response);
336 g_free(response);
337 return ret;
338 } else if(auth->type == 2) { /* NTLM */
339 #ifdef HAVE_NETTLE
340 const gchar *authdomain;
341 gchar *tmp;
342
343 authdomain = purple_account_get_string(sip->account,
344 "authdomain", "");
345
346 if(auth->nc == 3 && auth->nonce) {
347 /* TODO: Don't hardcode "purple" as the hostname */
348 ret = purple_ntlm_gen_type3(authuser, sip->password, "purple", authdomain, (const guint8 *)auth->nonce, &auth->flags);
349 tmp = g_strdup_printf("NTLM qop=\"auth\", opaque=\"%s\", realm=\"%s\", targetname=\"%s\", gssapi-data=\"%s\"", auth->opaque, auth->realm, auth->target, ret);
350 g_free(ret);
351 return tmp;
352 }
353 tmp = g_strdup_printf("NTLM qop=\"auth\", realm=\"%s\", targetname=\"%s\", gssapi-data=\"\"", auth->realm, auth->target);
354 return tmp;
355 #else
356 /* Used without support enabled */
357 g_return_val_if_reached(NULL);
358 #endif /* HAVE_NETTLE */
359 }
360
361 sprintf(noncecount, "%08d", auth->nc++);
362 response = purple_http_digest_calculate_response(
363 "md5", method, target, NULL, NULL,
364 auth->nonce, noncecount, NULL, auth->digest_session_key);
365 purple_debug(PURPLE_DEBUG_MISC, "simple", "response %s\n", response);
366
367 ret = g_strdup_printf("Digest username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", nc=\"%s\", response=\"%s\"", authuser, auth->realm, auth->nonce, target, noncecount, response);
368 g_free(response);
369 return ret;
370 }
371
372 static char *parse_attribute(const char *attrname, const char *source) {
373 const char *tmp, *tmp2;
374 char *retval = NULL;
375 int len = strlen(attrname);
376
377 /* we know that source is NULL-terminated.
378 * Therefore this loop won't be infinite.
379 */
380 while (source[0] == ' ')
381 source++;
382
383 if(!strncmp(source, attrname, len)) {
384 tmp = source + len;
385 tmp2 = g_strstr_len(tmp, strlen(tmp), "\"");
386 if(tmp2)
387 retval = g_strndup(tmp, tmp2 - tmp);
388 else
389 retval = g_strdup(tmp);
390 }
391
392 return retval;
393 }
394
395 static void fill_auth(struct simple_account_data *sip, const gchar *hdr, struct sip_auth *auth) {
396 int i = 0;
397 const char *authuser;
398 char *tmp;
399 gchar **parts;
400
401 authuser = purple_account_get_string(sip->account, "authuser", sip->username);
402
403 if(!authuser || strlen(authuser) < 1) {
404 authuser = sip->username;
405 }
406
407 if(!hdr) {
408 purple_debug_error("simple", "fill_auth: hdr==NULL\n");
409 return;
410 }
411
412 if(!g_ascii_strncasecmp(hdr, "NTLM", 4)) {
413 #ifdef HAVE_NETTLE
414 purple_debug_info("simple", "found NTLM\n");
415 auth->type = 2;
416 parts = g_strsplit(hdr+5, "\",", 0);
417 i = 0;
418 while(parts[i]) {
419 purple_debug_info("simple", "parts[i] %s\n", parts[i]);
420 if((tmp = parse_attribute("gssapi-data=\"", parts[i]))) {
421 auth->nonce = g_memdup(purple_ntlm_parse_type2(tmp, &auth->flags), 8);
422 g_free(tmp);
423 }
424 if((tmp = parse_attribute("targetname=\"",
425 parts[i]))) {
426 auth->target = tmp;
427 }
428 else if((tmp = parse_attribute("realm=\"",
429 parts[i]))) {
430 auth->realm = tmp;
431 }
432 else if((tmp = parse_attribute("opaque=\"", parts[i]))) {
433 auth->opaque = tmp;
434 }
435 i++;
436 }
437 g_strfreev(parts);
438 auth->nc = 1;
439 if(!strstr(hdr, "gssapi-data")) {
440 auth->nc = 1;
441 } else {
442 auth->nc = 3;
443 }
444
445 return;
446 #else
447 purple_debug_error("simple", "NTLM auth unsupported without "
448 "libnettle support. Please rebuild with "
449 "libnettle support for this feature.\n");
450 #endif /* HAVE_NETTLE */
451 } else if(!g_ascii_strncasecmp(hdr, "DIGEST", 6)) {
452
453 purple_debug_info("simple", "found DIGEST\n");
454
455 auth->type = 1;
456 parts = g_strsplit(hdr+7, ",", 0);
457 while(parts[i]) {
458 if((tmp = parse_attribute("nonce=\"", parts[i]))) {
459 auth->nonce = tmp;
460 }
461 else if((tmp = parse_attribute("realm=\"", parts[i]))) {
462 auth->realm = tmp;
463 }
464 i++;
465 }
466 g_strfreev(parts);
467 purple_debug(PURPLE_DEBUG_MISC, "simple", "nonce: %s realm: %s\n",
468 auth->nonce ? auth->nonce : "(null)",
469 auth->realm ? auth->realm : "(null)");
470
471 if(auth->realm) {
472 auth->digest_session_key = purple_http_digest_calculate_session_key(
473 "md5", authuser, auth->realm, sip->password, auth->nonce, NULL);
474
475 auth->nc = 1;
476 }
477
478 } else {
479 purple_debug_error("simple", "Unsupported or bad WWW-Authenticate header (%s).\n", hdr);
480 }
481
482 }
483
484 static void simple_canwrite_cb(gpointer data, gint source, PurpleInputCondition cond) {
485 PurpleConnection *gc = data;
486 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
487 gsize max_write;
488 gssize written;
489 const gchar *output = NULL;
490
491 max_write = purple_circular_buffer_get_max_read(sip->txbuf);
492
493 if(max_write == 0) {
494 purple_input_remove(sip->tx_handler);
495 sip->tx_handler = 0;
496 return;
497 }
498
499 output = purple_circular_buffer_get_output(sip->txbuf);
500
501 written = write(sip->fd, output, max_write);
502
503 if(written < 0 && errno == EAGAIN)
504 written = 0;
505 else if (written <= 0) {
506 /*TODO: do we really want to disconnect on a failure to write?*/
507 gchar *tmp = g_strdup_printf(_("Lost connection with server: %s"),
508 g_strerror(errno));
509 purple_connection_error(gc,
510 PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
511 g_free(tmp);
512 return;
513 }
514
515 purple_circular_buffer_mark_read(sip->txbuf, written);
516 }
517
518 static void simple_input_cb(gpointer data, gint source, PurpleInputCondition cond);
519
520 static void send_later_cb(gpointer data, gint source, const gchar *error_message) {
521 PurpleConnection *gc = data;
522 struct simple_account_data *sip;
523 struct sip_connection *conn;
524
525 if(source < 0) {
526 gchar *tmp = g_strdup_printf(_("Unable to connect: %s"),
527 error_message);
528 purple_connection_error(gc,
529 PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
530 g_free(tmp);
531 return;
532 }
533
534 sip = purple_connection_get_protocol_data(gc);
535 sip->fd = source;
536 sip->connecting = FALSE;
537
538 simple_canwrite_cb(gc, sip->fd, PURPLE_INPUT_WRITE);
539
540 /* If there is more to write now, we need to register a handler */
541 if(purple_circular_buffer_get_used(sip->txbuf) > 0)
542 sip->tx_handler = purple_input_add(sip->fd, PURPLE_INPUT_WRITE,
543 simple_canwrite_cb, gc);
544
545 conn = connection_create(sip, source);
546 conn->inputhandler = purple_input_add(sip->fd, PURPLE_INPUT_READ, simple_input_cb, gc);
547 }
548
549
550 static void sendlater(PurpleConnection *gc, const char *buf) {
551 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
552
553 if(!sip->connecting) {
554 purple_debug_info("simple", "connecting to %s port %d\n", sip->realhostname ? sip->realhostname : "{NULL}", sip->realport);
555 if (purple_proxy_connect(gc, sip->account, sip->realhostname, sip->realport, send_later_cb, gc) == NULL) {
556 purple_connection_error(gc, PURPLE_CONNECTION_ERROR_NETWORK_ERROR, _("Unable to connect"));
557 }
558 sip->connecting = TRUE;
559 }
560
561 if(purple_circular_buffer_get_max_read(sip->txbuf) > 0)
562 purple_circular_buffer_append(sip->txbuf, "\r\n", 2);
563
564 purple_circular_buffer_append(sip->txbuf, buf, strlen(buf));
565 }
566
567 static void sendout_pkt(PurpleConnection *gc, const char *buf) {
568 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
569 time_t currtime = time(NULL);
570 int writelen = strlen(buf);
571
572 purple_debug(PURPLE_DEBUG_MISC, "simple", "\n\nsending - %s\n######\n%s\n######\n\n", ctime(&currtime), buf);
573 if(sip->udp) {
574 if(sendto(sip->fd, buf, writelen, 0, (struct sockaddr*)&sip->serveraddr, sizeof(struct sockaddr_in)) < writelen) {
575 purple_debug_info("simple", "could not send packet\n");
576 }
577 } else {
578 int ret;
579 if(sip->fd < 0) {
580 sendlater(gc, buf);
581 return;
582 }
583
584 if(sip->tx_handler) {
585 ret = -1;
586 errno = EAGAIN;
587 } else
588 ret = write(sip->fd, buf, writelen);
589
590 if (ret < 0 && errno == EAGAIN)
591 ret = 0;
592 else if(ret <= 0) { /* XXX: When does this happen legitimately? */
593 sendlater(gc, buf);
594 return;
595 }
596
597 if (ret < writelen) {
598 if(!sip->tx_handler)
599 sip->tx_handler = purple_input_add(sip->fd,
600 PURPLE_INPUT_WRITE, simple_canwrite_cb,
601 gc);
602
603 /* XXX: is it OK to do this? You might get part of a request sent
604 with part of another. */
605 if(purple_circular_buffer_get_used(sip->txbuf) > 0)
606 purple_circular_buffer_append(sip->txbuf, "\r\n", 2);
607
608 purple_circular_buffer_append(sip->txbuf, buf + ret,
609 writelen - ret);
610 }
611 }
612 }
613
614 static int simple_send_raw(PurpleConnection *gc, const char *buf, int len)
615 {
616 sendout_pkt(gc, buf);
617 return len;
618 }
619
620 static void sendout_sipmsg(struct simple_account_data *sip, struct sipmsg *msg) {
621 GSList *tmp = msg->headers;
622 gchar *name;
623 gchar *value;
624 GString *outstr = g_string_new("");
625 g_string_append_printf(outstr, "%s %s SIP/2.0\r\n", msg->method, msg->target);
626 while(tmp) {
627 name = ((struct siphdrelement*) (tmp->data))->name;
628 value = ((struct siphdrelement*) (tmp->data))->value;
629 g_string_append_printf(outstr, "%s: %s\r\n", name, value);
630 tmp = g_slist_next(tmp);
631 }
632 g_string_append_printf(outstr, "\r\n%s", msg->body ? msg->body : "");
633 sendout_pkt(sip->gc, outstr->str);
634 g_string_free(outstr, TRUE);
635 }
636
637 static void send_sip_response(PurpleConnection *gc, struct sipmsg *msg, int code,
638 const char *text, const char *body) {
639 GSList *tmp = msg->headers;
640 gchar *name;
641 gchar *value;
642 GString *outstr = g_string_new("");
643
644 /* When sending the acknowlegements and errors, the content length from the original
645 message is still here, but there is no body; we need to make sure we're sending the
646 correct content length */
647 sipmsg_remove_header(msg, "Content-Length");
648 if(body) {
649 gchar len[12];
650 sprintf(len, "%" G_GSIZE_FORMAT , strlen(body));
651 sipmsg_add_header(msg, "Content-Length", len);
652 }
653 else
654 sipmsg_add_header(msg, "Content-Length", "0");
655 g_string_append_printf(outstr, "SIP/2.0 %d %s\r\n", code, text);
656 while(tmp) {
657 name = ((struct siphdrelement*) (tmp->data))->name;
658 value = ((struct siphdrelement*) (tmp->data))->value;
659
660 g_string_append_printf(outstr, "%s: %s\r\n", name, value);
661 tmp = g_slist_next(tmp);
662 }
663 g_string_append_printf(outstr, "\r\n%s", body ? body : "");
664 sendout_pkt(gc, outstr->str);
665 g_string_free(outstr, TRUE);
666 }
667
668 static void transactions_remove(struct simple_account_data *sip, struct transaction *trans) {
669 if(trans->msg) sipmsg_free(trans->msg);
670 sip->transactions = g_slist_remove(sip->transactions, trans);
671 g_free(trans);
672 }
673
674 static void transactions_add_buf(struct simple_account_data *sip, const gchar *buf, void *callback) {
675 struct transaction *trans = g_new0(struct transaction, 1);
676 trans->time = time(NULL);
677 trans->msg = sipmsg_parse_msg(buf);
678 trans->cseq = sipmsg_find_header(trans->msg, "CSeq");
679 trans->callback = callback;
680 sip->transactions = g_slist_append(sip->transactions, trans);
681 }
682
683 static struct transaction *transactions_find(struct simple_account_data *sip, struct sipmsg *msg) {
684 struct transaction *trans;
685 GSList *transactions = sip->transactions;
686 const gchar *cseq = sipmsg_find_header(msg, "CSeq");
687
688 if (cseq) {
689 while(transactions) {
690 trans = transactions->data;
691 if(purple_strequal(trans->cseq, cseq)) {
692 return trans;
693 }
694 transactions = transactions->next;
695 }
696 } else {
697 purple_debug(PURPLE_DEBUG_MISC, "simple", "Received message contains no CSeq header.\n");
698 }
699
700 return NULL;
701 }
702
703 static void send_sip_request(PurpleConnection *gc, const gchar *method,
704 const gchar *url, const gchar *to, const gchar *addheaders,
705 const gchar *body, struct sip_dialog *dialog, TransCallback tc) {
706 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
707 char *callid = dialog ? g_strdup(dialog->callid) : gencallid();
708 char *auth = NULL;
709 const char *addh = "";
710 gchar *branch = genbranch();
711 gchar *tag = NULL;
712 char *buf;
713
714 if(purple_strequal(method, "REGISTER")) {
715 if(sip->regcallid) {
716 g_free(callid);
717 callid = g_strdup(sip->regcallid);
718 }
719 else sip->regcallid = g_strdup(callid);
720 }
721
722 if(addheaders) addh = addheaders;
723 if(sip->registrar.type && purple_strequal(method, "REGISTER")) {
724 buf = auth_header(sip, &sip->registrar, method, url);
725 auth = g_strdup_printf("Authorization: %s\r\n", buf);
726 g_free(buf);
727 purple_debug(PURPLE_DEBUG_MISC, "simple", "header %s", auth);
728 } else if(sip->proxy.type && !purple_strequal(method, "REGISTER")) {
729 buf = auth_header(sip, &sip->proxy, method, url);
730 auth = g_strdup_printf("Proxy-Authorization: %s\r\n", buf);
731 g_free(buf);
732 purple_debug(PURPLE_DEBUG_MISC, "simple", "header %s", auth);
733 }
734
735 if (!dialog)
736 tag = gentag();
737
738 buf = g_strdup_printf("%s %s SIP/2.0\r\n"
739 "Via: SIP/2.0/%s %s:%d;branch=%s\r\n"
740 /* Don't know what epid is, but LCS wants it */
741 "From: <sip:%s@%s>;tag=%s;epid=1234567890\r\n"
742 "To: <%s>%s%s\r\n"
743 "Max-Forwards: 10\r\n"
744 "CSeq: %d %s\r\n"
745 "User-Agent: Purple/" VERSION "\r\n"
746 "Call-ID: %s\r\n"
747 "%s%s"
748 "Content-Length: %" G_GSIZE_FORMAT "\r\n\r\n%s",
749 method,
750 url,
751 sip->udp ? "UDP" : "TCP",
752 purple_network_get_my_ip(-1),
753 sip->listenport,
754 branch,
755 sip->username,
756 sip->servername,
757 dialog ? dialog->ourtag : tag,
758 to,
759 dialog ? ";tag=" : "",
760 dialog ? dialog->theirtag : "",
761 ++sip->cseq,
762 method,
763 callid,
764 auth ? auth : "",
765 addh,
766 strlen(body),
767 body);
768
769 g_free(tag);
770 g_free(auth);
771 g_free(branch);
772 g_free(callid);
773
774 /* add to ongoing transactions */
775
776 transactions_add_buf(sip, buf, tc);
777
778 sendout_pkt(gc, buf);
779
780 g_free(buf);
781 }
782
783 static char *get_contact(struct simple_account_data *sip) {
784 return g_strdup_printf("<sip:%s@%s:%d;transport=%s>;methods=\"MESSAGE, SUBSCRIBE, NOTIFY\"",
785 sip->username, purple_network_get_my_ip(-1),
786 sip->listenport,
787 sip->udp ? "udp" : "tcp");
788 }
789
790 static void do_register_exp(struct simple_account_data *sip, int expire) {
791 char *uri, *to, *contact, *hdr;
792
793 sip->reregister = time(NULL) + expire - 50;
794
795 uri = g_strdup_printf("sip:%s", sip->servername);
796 to = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
797 contact = get_contact(sip);
798 hdr = g_strdup_printf("Contact: %s\r\nExpires: %d\r\n", contact, expire);
799 g_free(contact);
800
801 sip->registerstatus = SIMPLE_REGISTER_SENT;
802
803 send_sip_request(sip->gc, "REGISTER", uri, to, hdr, "", NULL,
804 process_register_response);
805
806 g_free(hdr);
807 g_free(uri);
808 g_free(to);
809 }
810
811 static void do_register(struct simple_account_data *sip) {
812 do_register_exp(sip, sip->registerexpire);
813 }
814
815 static gchar *parse_from(const gchar *hdr) {
816 gchar *from;
817 const gchar *tmp, *tmp2 = hdr;
818
819 if(!hdr) return NULL;
820 purple_debug_info("simple", "parsing address out of %s\n", hdr);
821 tmp = strchr(hdr, '<');
822
823 /* i hate the different SIP UA behaviours... */
824 if(tmp) { /* sip address in <...> */
825 tmp2 = tmp + 1;
826 tmp = strchr(tmp2, '>');
827 if(tmp) {
828 from = g_strndup(tmp2, tmp - tmp2);
829 } else {
830 purple_debug_info("simple", "found < without > in From\n");
831 return NULL;
832 }
833 } else {
834 tmp = strchr(tmp2, ';');
835 if(tmp) {
836 from = g_strndup(tmp2, tmp - tmp2);
837 } else {
838 from = g_strdup(tmp2);
839 }
840 }
841 purple_debug_info("simple", "got %s\n", from);
842 return from;
843 }
844 static gchar *find_tag(const gchar *);
845
846 static gboolean process_subscribe_response(struct simple_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
847 gchar *to = NULL;
848 struct simple_buddy *b = NULL;
849 gchar *theirtag = NULL, *ourtag = NULL;
850 const gchar *callid = NULL;
851
852 purple_debug_info("simple", "process subscribe response\n");
853
854 if(msg->response == 200 || msg->response == 202) {
855 if ( (to = parse_from(sipmsg_find_header(msg, "To"))) &&
856 (b = g_hash_table_lookup(sip->buddies, to)) &&
857 !(b->dialog))
858 {
859 purple_debug_info("simple", "creating dialog"
860 " information for a subscription.\n");
861
862 theirtag = find_tag(sipmsg_find_header(msg, "To"));
863 ourtag = find_tag(sipmsg_find_header(msg, "From"));
864 callid = sipmsg_find_header(msg, "Call-ID");
865
866 if (theirtag && ourtag && callid)
867 {
868 b->dialog = g_new0(struct sip_dialog, 1);
869 b->dialog->ourtag = g_strdup(ourtag);
870 b->dialog->theirtag = g_strdup(theirtag);
871 b->dialog->callid = g_strdup(callid);
872
873 purple_debug_info("simple", "ourtag: %s\n",
874 ourtag);
875 purple_debug_info("simple", "theirtag: %s\n",
876 theirtag);
877 purple_debug_info("simple", "callid: %s\n",
878 callid);
879 g_free(theirtag);
880 g_free(ourtag);
881 }
882 }
883 else
884 {
885 purple_debug_info("simple", "cannot create dialog!\n");
886 }
887 return TRUE;
888 }
889
890 to = parse_from(sipmsg_find_header(tc->msg, "To")); /* cant be NULL since it is our own msg */
891
892 /* we can not subscribe -> user is offline (TODO unknown status?) */
893
894 purple_protocol_got_user_status(sip->account, to, "offline", NULL);
895 g_free(to);
896 return TRUE;
897 }
898
899 static void simple_subscribe_exp(struct simple_account_data *sip, struct simple_buddy *buddy, int expiration) {
900 gchar *contact, *to, *tmp, *tmp2;
901
902 tmp2 = g_strdup_printf(
903 "Expires: %d\r\n"
904 "Accept: application/pidf+xml, application/xpidf+xml\r\n"
905 "Event: presence\r\n",
906 expiration);
907
908 if(strncmp(buddy->name, "sip:", 4))
909 to = g_strdup_printf("sip:%s", buddy->name);
910 else
911 to = g_strdup(buddy->name);
912
913 tmp = get_contact(sip);
914 contact = g_strdup_printf("%sContact: %s\r\n", tmp2, tmp);
915 g_free(tmp);
916 g_free(tmp2);
917
918 send_sip_request(sip->gc, "SUBSCRIBE", to, to, contact,"",buddy->dialog,
919 (expiration > 0) ? process_subscribe_response : NULL);
920
921 g_free(to);
922 g_free(contact);
923
924 /* resubscribe before subscription expires */
925 /* add some jitter */
926 if (expiration > 60)
927 buddy->resubscribe = time(NULL) + (expiration - 60) + (g_random_int_range(0, 50));
928 else if (expiration > 0)
929 buddy->resubscribe = time(NULL) + ((int) (expiration / 2));
930 }
931
932 static void simple_subscribe(struct simple_account_data *sip, struct simple_buddy *buddy) {
933 simple_subscribe_exp(sip, buddy, SUBSCRIBE_EXPIRATION);
934 }
935
936 static void simple_unsubscribe(char *name, struct simple_buddy *buddy, struct simple_account_data *sip) {
937 if (buddy->dialog)
938 {
939 purple_debug_info("simple", "Unsubscribing from %s\n", name);
940 simple_subscribe_exp(sip, buddy, 0);
941 }
942 }
943
944 static gboolean simple_add_lcs_contacts(struct simple_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
945 const gchar *tmp;
946 PurpleXmlNode *item, *group, *isc;
947 const char *name_group;
948 PurpleBuddy *b;
949 PurpleGroup *g = NULL;
950 struct simple_buddy *bs;
951 int len = msg->bodylen;
952
953
954 tmp = sipmsg_find_header(msg, "Event");
955 if(tmp && !strncmp(tmp, "vnd-microsoft-roaming-contacts", 30)){
956
957 purple_debug_info("simple", "simple_add_lcs_contacts->%s-%d\n", msg->body, len);
958 /*Convert the contact from XML to Purple Buddies*/
959 isc = purple_xmlnode_from_str(msg->body, len);
960
961 /* ToDo. Find for all groups */
962 if ((group = purple_xmlnode_get_child(isc, "group"))) {
963 name_group = purple_xmlnode_get_attrib(group, "name");
964 purple_debug_info("simple", "name_group->%s\n", name_group);
965 g = purple_blist_find_group(name_group);
966 if(!g)
967 g = purple_group_new(name_group);
968 }
969
970 if (!g)
971 g = purple_blist_get_default_group();
972
973 for(item = purple_xmlnode_get_child(isc, "contact"); item; item = purple_xmlnode_get_next_twin(item))
974 {
975 const char *uri;
976 char *buddy_name;
977 uri = purple_xmlnode_get_attrib(item, "uri");
978 /*name = purple_xmlnode_get_attrib(item, "name");
979 groups = purple_xmlnode_get_attrib(item, "groups");*/
980 purple_debug_info("simple", "URI->%s\n", uri);
981
982 buddy_name = g_strdup_printf("sip:%s", uri);
983
984 b = purple_blist_find_buddy(sip->account, buddy_name);
985 if(!b){
986 b = purple_buddy_new(sip->account, buddy_name, uri);
987 }
988 g_free(buddy_name);
989
990 purple_blist_add_buddy(b, NULL, g, NULL);
991 purple_buddy_set_local_alias(b, uri);
992 bs = g_new0(struct simple_buddy, 1);
993 bs->name = g_strdup(purple_buddy_get_name(b));
994 g_hash_table_insert(sip->buddies, bs->name, bs);
995 }
996 purple_xmlnode_free(isc);
997 }
998 return 0;
999 }
1000
1001 static void simple_subscribe_buddylist(struct simple_account_data *sip) {
1002 gchar *contact = "Event: vnd-microsoft-roaming-contacts\r\nAccept: application/vnd-microsoft-roaming-contacts+xml\r\nSupported: com.microsoft.autoextend\r\nSupported: ms-benotify\r\nProxy-Require: ms-benotify\r\nSupported: ms-piggyback-first-notify\r\n";
1003 gchar *to;
1004 gchar *tmp;
1005 to = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
1006
1007 tmp = get_contact(sip);
1008
1009 contact = g_strdup_printf("%sContact: %s\r\n", contact, tmp);
1010 g_free(tmp);
1011
1012 send_sip_request(sip->gc, "SUBSCRIBE", to, to, contact, "", NULL, simple_add_lcs_contacts);
1013
1014 g_free(to);
1015 g_free(contact);
1016 }
1017
1018
1019 static void simple_buddy_resub(char *name, struct simple_buddy *buddy, struct simple_account_data *sip) {
1020 time_t curtime = time(NULL);
1021 purple_debug_info("simple", "buddy resub\n");
1022 if(buddy->resubscribe < curtime) {
1023 purple_debug(PURPLE_DEBUG_MISC, "simple", "simple_buddy_resub %s\n", name);
1024 simple_subscribe(sip, buddy);
1025 }
1026 }
1027
1028 static gboolean resend_timeout(struct simple_account_data *sip) {
1029 GSList *tmp = sip->transactions;
1030 time_t currtime = time(NULL);
1031 while(tmp) {
1032 struct transaction *trans = tmp->data;
1033 tmp = tmp->next;
1034 purple_debug_info("simple", "have open transaction age: %lu\n", currtime- trans->time);
1035 if((currtime - trans->time > 5) && trans->retries >= 1) {
1036 /* TODO 408 */
1037 } else {
1038 if((currtime - trans->time > 2) && trans->retries == 0) {
1039 trans->retries++;
1040 sendout_sipmsg(sip, trans->msg);
1041 }
1042 }
1043 }
1044 return TRUE;
1045 }
1046
1047 static gboolean subscribe_timeout(struct simple_account_data *sip) {
1048 GSList *tmp;
1049 time_t curtime = time(NULL);
1050 /* register again if first registration expires */
1051 if(sip->reregister < curtime) {
1052 do_register(sip);
1053 }
1054
1055 /* publish status again if our last update is about to expire. */
1056 if (sip->republish != -1 &&
1057 sip->republish < curtime &&
1058 purple_account_get_bool(sip->account, "dopublish", TRUE))
1059 {
1060 purple_debug_info("simple", "subscribe_timeout: republishing status.\n");
1061 send_open_publish(sip);
1062 }
1063
1064 /* check for every subscription if we need to resubscribe */
1065 g_hash_table_foreach(sip->buddies, (GHFunc)simple_buddy_resub, (gpointer)sip);
1066
1067 /* remove a timed out suscriber */
1068 tmp = sip->watcher;
1069 while(tmp) {
1070 struct simple_watcher *watcher = tmp->data;
1071 if(watcher->expire < curtime) {
1072 watcher_remove(sip, watcher->name);
1073 tmp = sip->watcher;
1074 }
1075 if(tmp) tmp = tmp->next;
1076 }
1077
1078 return TRUE;
1079 }
1080
1081 static void simple_send_message(struct simple_account_data *sip, const char *to, const char *msg, const char *type) {
1082 gchar *hdr;
1083 gchar *fullto;
1084 if(strncmp(to, "sip:", 4))
1085 fullto = g_strdup_printf("sip:%s", to);
1086 else
1087 fullto = g_strdup(to);
1088
1089 if(type) {
1090 hdr = g_strdup_printf("Content-Type: %s\r\n", type);
1091 } else {
1092 hdr = g_strdup("Content-Type: text/plain\r\n");
1093 }
1094 send_sip_request(sip->gc, "MESSAGE", fullto, fullto, hdr, msg, NULL, NULL);
1095 g_free(hdr);
1096 g_free(fullto);
1097 }
1098
1099 static int simple_im_send(PurpleConnection *gc, PurpleMessage *msg) {
1100 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
1101 char *to = g_strdup(purple_message_get_recipient(msg));
1102 char *text = purple_unescape_html(purple_message_get_contents(msg));
1103 simple_send_message(sip, to, text, NULL);
1104 g_free(to);
1105 g_free(text);
1106 return 1;
1107 }
1108
1109 static void process_incoming_message(struct simple_account_data *sip, struct sipmsg *msg) {
1110 gchar *from;
1111 const gchar *contenttype;
1112 gboolean found = FALSE;
1113
1114 from = parse_from(sipmsg_find_header(msg, "From"));
1115
1116 if(!from) return;
1117
1118 purple_debug(PURPLE_DEBUG_MISC, "simple", "got message from %s: %s\n", from, msg->body);
1119
1120 contenttype = sipmsg_find_header(msg, "Content-Type");
1121 if(!contenttype || !strncmp(contenttype, "text/plain", 10) || !strncmp(contenttype, "text/html", 9)) {
1122 purple_serv_got_im(sip->gc, from, msg->body, 0, time(NULL));
1123 send_sip_response(sip->gc, msg, 200, "OK", NULL);
1124 found = TRUE;
1125 }
1126 else if(!strncmp(contenttype, "application/im-iscomposing+xml", 30)) {
1127 PurpleXmlNode *isc = purple_xmlnode_from_str(msg->body, msg->bodylen);
1128 PurpleXmlNode *state;
1129 gchar *statedata;
1130
1131 if(!isc) {
1132 purple_debug_info("simple", "process_incoming_message: can not parse iscomposing\n");
1133 g_free(from);
1134 return;
1135 }
1136
1137 state = purple_xmlnode_get_child(isc, "state");
1138
1139 if(!state) {
1140 purple_debug_info("simple", "process_incoming_message: no state found\n");
1141 purple_xmlnode_free(isc);
1142 g_free(from);
1143 return;
1144 }
1145
1146 statedata = purple_xmlnode_get_data(state);
1147 if(statedata) {
1148 if(strstr(statedata, "active"))
1149 purple_serv_got_typing(sip->gc, from, 0, PURPLE_IM_TYPING);
1150 else
1151 purple_serv_got_typing_stopped(sip->gc, from);
1152
1153 g_free(statedata);
1154 }
1155 purple_xmlnode_free(isc);
1156 send_sip_response(sip->gc, msg, 200, "OK", NULL);
1157 found = TRUE;
1158 }
1159 if(!found) {
1160 purple_debug_info("simple", "got unknown mime-type\n");
1161 send_sip_response(sip->gc, msg, 415, "Unsupported media type", NULL);
1162 }
1163 g_free(from);
1164 }
1165
1166
1167 gboolean process_register_response(struct simple_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
1168 const gchar *tmp;
1169 purple_debug(PURPLE_DEBUG_MISC, "simple", "in process register response response: %d\n", msg->response);
1170 switch (msg->response) {
1171 case 200:
1172 if(sip->registerstatus < SIMPLE_REGISTER_COMPLETE) { /* registered */
1173 if(purple_account_get_bool(sip->account, "dopublish", TRUE)) {
1174 send_open_publish(sip);
1175 }
1176 }
1177 sip->registerstatus = SIMPLE_REGISTER_COMPLETE;
1178 purple_connection_set_state(sip->gc, PURPLE_CONNECTION_CONNECTED);
1179
1180 /* get buddies from blist */
1181 simple_get_buddies(sip->gc);
1182
1183 subscribe_timeout(sip);
1184 tmp = sipmsg_find_header(msg, "Allow-Events");
1185 if(tmp && strstr(tmp, "vnd-microsoft-provisioning")){
1186 simple_subscribe_buddylist(sip);
1187 }
1188
1189 break;
1190 case 401:
1191 if(sip->registerstatus != SIMPLE_REGISTER_RETRY) {
1192 purple_debug_info("simple", "REGISTER retries %d\n", sip->registrar.retries);
1193 if(sip->registrar.retries > SIMPLE_REGISTER_RETRY_MAX) {
1194 if (!purple_account_get_remember_password(purple_connection_get_account(sip->gc)))
1195 purple_account_set_password(purple_connection_get_account(sip->gc), NULL, NULL, NULL);
1196 purple_connection_error(sip->gc,
1197 PURPLE_CONNECTION_ERROR_AUTHENTICATION_FAILED,
1198 _("Incorrect password"));
1199 return TRUE;
1200 }
1201 tmp = sipmsg_find_header(msg, "WWW-Authenticate");
1202 fill_auth(sip, tmp, &sip->registrar);
1203 sip->registerstatus = SIMPLE_REGISTER_RETRY;
1204 do_register(sip);
1205 }
1206 break;
1207 default:
1208 if (sip->registerstatus != SIMPLE_REGISTER_RETRY) {
1209 purple_debug_info("simple", "Unrecognized return code for REGISTER.\n");
1210 if (sip->registrar.retries > SIMPLE_REGISTER_RETRY_MAX) {
1211 purple_connection_error(sip->gc,
1212 PURPLE_CONNECTION_ERROR_OTHER_ERROR,
1213 _("Unknown server response"));
1214 return TRUE;
1215 }
1216 sip->registerstatus = SIMPLE_REGISTER_RETRY;
1217 do_register(sip);
1218 }
1219 break;
1220 }
1221 return TRUE;
1222 }
1223
1224 static gboolean dialog_match(struct sip_dialog *dialog, struct sipmsg *msg)
1225 {
1226 const gchar *fromhdr;
1227 const gchar *tohdr;
1228 const gchar *callid;
1229 gchar *ourtag, *theirtag;
1230 gboolean match = FALSE;
1231
1232 fromhdr = sipmsg_find_header(msg, "From");
1233 tohdr = sipmsg_find_header(msg, "To");
1234 callid = sipmsg_find_header(msg, "Call-ID");
1235
1236 if (!fromhdr || !tohdr || !callid)
1237 return FALSE;
1238
1239 ourtag = find_tag(tohdr);
1240 theirtag = find_tag(fromhdr);
1241
1242 if (ourtag && theirtag &&
1243 purple_strequal(dialog->callid, callid) &&
1244 purple_strequal(dialog->ourtag, ourtag) &&
1245 purple_strequal(dialog->theirtag, theirtag))
1246 match = TRUE;
1247
1248 g_free(ourtag);
1249 g_free(theirtag);
1250
1251 return match;
1252 }
1253
1254 static void process_incoming_notify(struct simple_account_data *sip, struct sipmsg *msg) {
1255 gchar *from;
1256 const gchar *fromhdr;
1257 gchar *basicstatus_data;
1258 PurpleXmlNode *pidf;
1259 PurpleXmlNode *basicstatus = NULL, *tuple, *status;
1260 gboolean isonline = FALSE;
1261 struct simple_buddy *b = NULL;
1262 const gchar *sshdr = NULL;
1263
1264 fromhdr = sipmsg_find_header(msg, "From");
1265 from = parse_from(fromhdr);
1266 if(!from) return;
1267
1268 b = g_hash_table_lookup(sip->buddies, from);
1269 if (!b)
1270 {
1271 g_free(from);
1272 purple_debug_info("simple", "Could not find the buddy.\n");
1273 return;
1274 }
1275
1276 if (b->dialog && !dialog_match(b->dialog, msg))
1277 {
1278 /* We only accept notifies from people that
1279 * we already have a dialog with.
1280 */
1281 purple_debug_info("simple","No corresponding dialog for notify--discard\n");
1282 g_free(from);
1283 return;
1284 }
1285
1286 pidf = purple_xmlnode_from_str(msg->body, msg->bodylen);
1287
1288 if(!pidf) {
1289 purple_debug_info("simple", "process_incoming_notify: no parseable pidf\n");
1290 sshdr = sipmsg_find_header(msg, "Subscription-State");
1291 if (sshdr)
1292 {
1293 int i = 0;
1294 gchar **ssparts = g_strsplit(sshdr, ":", 0);
1295 while (ssparts[i])
1296 {
1297 g_strchug(ssparts[i]);
1298 if (purple_str_has_prefix(ssparts[i], "terminated"))
1299 {
1300 purple_debug_info("simple", "Subscription expired!");
1301 if (b->dialog)
1302 {
1303 g_free(b->dialog->ourtag);
1304 g_free(b->dialog->theirtag);
1305 g_free(b->dialog->callid);
1306 g_free(b->dialog);
1307 b->dialog = NULL;
1308 }
1309
1310 purple_protocol_got_user_status(sip->account, from, "offline", NULL);
1311 break;
1312 }
1313 i++;
1314 }
1315 g_strfreev(ssparts);
1316 }
1317 send_sip_response(sip->gc, msg, 200, "OK", NULL);
1318 g_free(from);
1319 return;
1320 }
1321
1322 if ((tuple = purple_xmlnode_get_child(pidf, "tuple")))
1323 if ((status = purple_xmlnode_get_child(tuple, "status")))
1324 basicstatus = purple_xmlnode_get_child(status, "basic");
1325
1326 if(!basicstatus) {
1327 purple_debug_info("simple", "process_incoming_notify: no basic found\n");
1328 purple_xmlnode_free(pidf);
1329 g_free(from);
1330 return;
1331 }
1332
1333 basicstatus_data = purple_xmlnode_get_data(basicstatus);
1334
1335 if(!basicstatus_data) {
1336 purple_debug_info("simple", "process_incoming_notify: no basic data found\n");
1337 purple_xmlnode_free(pidf);
1338 g_free(from);
1339 return;
1340 }
1341
1342 if(strstr(basicstatus_data, "open"))
1343 isonline = TRUE;
1344
1345
1346 if(isonline)
1347 purple_protocol_got_user_status(sip->account, from, "available", NULL);
1348 else
1349 purple_protocol_got_user_status(sip->account, from, "offline", NULL);
1350
1351 purple_xmlnode_free(pidf);
1352 g_free(from);
1353 g_free(basicstatus_data);
1354
1355 send_sip_response(sip->gc, msg, 200, "OK", NULL);
1356 }
1357
1358 static unsigned int simple_typing(PurpleConnection *gc, const char *name, PurpleIMTypingState state) {
1359 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
1360
1361 gchar *xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
1362 "<isComposing xmlns=\"urn:ietf:params:xml:ns:im-iscomposing\"\n"
1363 "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1364 "xsi:schemaLocation=\"urn:ietf:params:xml:ns:im-composing iscomposing.xsd\">\n"
1365 "<state>%s</state>\n"
1366 "<contenttype>text/plain</contenttype>\n"
1367 "<refresh>60</refresh>\n"
1368 "</isComposing>";
1369 gchar *recv = g_strdup(name);
1370 if(state == PURPLE_IM_TYPING) {
1371 gchar *msg = g_strdup_printf(xml, "active");
1372 simple_send_message(sip, recv, msg, "application/im-iscomposing+xml");
1373 g_free(msg);
1374 } else /* TODO: Only if (state == PURPLE_IM_TYPED) ? */ {
1375 gchar *msg = g_strdup_printf(xml, "idle");
1376 simple_send_message(sip, recv, msg, "application/im-iscomposing+xml");
1377 g_free(msg);
1378 }
1379 g_free(recv);
1380 /*
1381 * TODO: Is this right? It will cause the core to call
1382 * purple_serv_send_typing(gc, who, PURPLE_IM_TYPING) once every second
1383 * until the user stops typing. If that's not desired,
1384 * then return 0 instead.
1385 */
1386 return 1;
1387 }
1388
1389 static gchar *find_tag(const gchar *hdr) {
1390 const gchar *tmp = strstr(hdr, ";tag="), *tmp2;
1391
1392 if(!tmp) return NULL;
1393 tmp += 5;
1394 if((tmp2 = strchr(tmp, ';'))) {
1395 return g_strndup(tmp, tmp2 - tmp);
1396 }
1397 return g_strdup(tmp);
1398 }
1399
1400 static gchar* gen_xpidf(struct simple_account_data *sip) {
1401 gchar *doc = g_strdup_printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
1402 "<presence>\n"
1403 "<presentity uri=\"sip:%s@%s;method=SUBSCRIBE\"/>\n"
1404 "<display name=\"sip:%s@%s\"/>\n"
1405 "<atom id=\"1234\">\n"
1406 "<address uri=\"sip:%s@%s\">\n"
1407 "<status status=\"%s\"/>\n"
1408 "</address>\n"
1409 "</atom>\n"
1410 "</presence>\n",
1411 sip->username,
1412 sip->servername,
1413 sip->username,
1414 sip->servername,
1415 sip->username,
1416 sip->servername,
1417 sip->status);
1418 return doc;
1419 }
1420
1421 static gchar* gen_pidf(struct simple_account_data *sip, gboolean open) {
1422 gchar *doc = g_strdup_printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
1423 "<presence xmlns=\"urn:ietf:params:xml:ns:pidf\"\n"
1424 "xmlns:im=\"urn:ietf:params:xml:ns:pidf:im\"\n"
1425 "entity=\"sip:%s@%s\">\n"
1426 "<tuple id=\"bs35r9f\">\n"
1427 "<status>\n"
1428 "<basic>%s</basic>\n"
1429 "</status>\n"
1430 "<note>%s</note>\n"
1431 "</tuple>\n"
1432 "</presence>",
1433 sip->username,
1434 sip->servername,
1435 (open == TRUE) ? "open" : "closed",
1436 (open == TRUE) ? sip->status : "");
1437 return doc;
1438 }
1439
1440 static void send_notify(struct simple_account_data *sip, struct simple_watcher *watcher) {
1441 gchar *doc = watcher->needsxpidf ? gen_xpidf(sip) : gen_pidf(sip, TRUE);
1442 gchar *hdr = watcher->needsxpidf ? "Event: presence\r\nContent-Type: application/xpidf+xml\r\n" : "Event: presence\r\nContent-Type: application/pidf+xml\r\n";
1443 send_sip_request(sip->gc, "NOTIFY", watcher->name, watcher->name, hdr, doc, &watcher->dialog, NULL);
1444 g_free(doc);
1445 }
1446
1447 static gboolean process_publish_response(struct simple_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
1448
1449 const gchar *etag = NULL;
1450
1451 if(msg->response != 200 && msg->response != 408) {
1452 /* never send again */
1453 sip->republish = -1;
1454 }
1455
1456 etag = sipmsg_find_header(msg, "SIP-Etag");
1457 if (etag) {
1458 /* we must store the etag somewhere. */
1459 g_free(sip->publish_etag);
1460 sip->publish_etag = g_strdup(etag);
1461 }
1462
1463 return TRUE;
1464 }
1465
1466 static void send_open_publish(struct simple_account_data *sip) {
1467 gchar *add_headers = NULL;
1468 gchar *uri = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
1469 gchar *doc = gen_pidf(sip, TRUE);
1470
1471 add_headers = g_strdup_printf("%s%s%s%s%d\r\n%s",
1472 sip->publish_etag ? "SIP-If-Match: " : "",
1473 sip->publish_etag ? sip->publish_etag : "",
1474 sip->publish_etag ? "\r\n" : "",
1475 "Expires: ", PUBLISH_EXPIRATION,
1476 "Event: presence\r\n"
1477 "Content-Type: application/pidf+xml\r\n");
1478
1479 send_sip_request(sip->gc, "PUBLISH", uri, uri,
1480 add_headers, doc, NULL, process_publish_response);
1481 sip->republish = time(NULL) + PUBLISH_EXPIRATION - 50;
1482 g_free(uri);
1483 g_free(doc);
1484 g_free(add_headers);
1485 }
1486
1487 static void send_closed_publish(struct simple_account_data *sip) {
1488 gchar *uri = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
1489 gchar *add_headers, *doc;
1490
1491 add_headers = g_strdup_printf("%s%s%s%s",
1492 sip->publish_etag ? "SIP-If-Match: " : "",
1493 sip->publish_etag ? sip->publish_etag : "",
1494 sip->publish_etag ? "\r\n" : "",
1495 "Expires: 600\r\n"
1496 "Event: presence\r\n"
1497 "Content-Type: application/pidf+xml\r\n");
1498
1499 doc = gen_pidf(sip, FALSE);
1500 send_sip_request(sip->gc, "PUBLISH", uri, uri, add_headers,
1501 doc, NULL, process_publish_response);
1502 /*sip->republish = time(NULL) + 500;*/
1503 g_free(uri);
1504 g_free(doc);
1505 g_free(add_headers);
1506 }
1507
1508 static void process_incoming_subscribe(struct simple_account_data *sip, struct sipmsg *msg) {
1509 const char *from_hdr = sipmsg_find_header(msg, "From");
1510 gchar *from = parse_from(from_hdr);
1511 gchar *theirtag = find_tag(from_hdr);
1512 gchar *ourtag = find_tag(sipmsg_find_header(msg, "To"));
1513 gboolean tagadded = FALSE;
1514 const gchar *callid = sipmsg_find_header(msg, "Call-ID");
1515 const gchar *expire = sipmsg_find_header(msg, "Expire");
1516 gchar *tmp;
1517 struct simple_watcher *watcher = watcher_find(sip, from);
1518 if(!ourtag) {
1519 tagadded = TRUE;
1520 ourtag = gentag();
1521 }
1522 if(!watcher) { /* new subscription */
1523 const gchar *acceptheader = sipmsg_find_header(msg, "Accept");
1524 gboolean needsxpidf = FALSE;
1525 if(!purple_account_privacy_check(sip->account, from)) {
1526 send_sip_response(sip->gc, msg, 202, "Ok", NULL);
1527 goto privend;
1528 }
1529 if(acceptheader) {
1530 const gchar *tmp = acceptheader;
1531 gboolean foundpidf = FALSE;
1532 gboolean foundxpidf = FALSE;
1533 while(tmp && tmp < acceptheader + strlen(acceptheader)) {
1534 gchar *tmp2 = strchr(tmp, ',');
1535 if(tmp2) *tmp2 = '\0';
1536 if(!g_ascii_strcasecmp("application/pidf+xml", tmp))
1537 foundpidf = TRUE;
1538 if(!g_ascii_strcasecmp("application/xpidf+xml", tmp))
1539 foundxpidf = TRUE;
1540 if(tmp2) {
1541 *tmp2 = ',';
1542 tmp = tmp2 + 1;
1543 while(*tmp == ' ') tmp++;
1544 } else
1545 tmp = NULL;
1546 }
1547 if(!foundpidf && foundxpidf) needsxpidf = TRUE;
1548 }
1549 watcher = watcher_create(sip, from, callid, ourtag, theirtag, needsxpidf);
1550 }
1551 if(tagadded) {
1552 gchar *to = g_strdup_printf("%s;tag=%s", sipmsg_find_header(msg, "To"), ourtag);
1553 sipmsg_remove_header(msg, "To");
1554 sipmsg_add_header(msg, "To", to);
1555 g_free(to);
1556 }
1557 if(expire)
1558 watcher->expire = time(NULL) + strtol(expire, NULL, 10);
1559 else
1560 watcher->expire = time(NULL) + 600;
1561 sipmsg_remove_header(msg, "Contact");
1562 tmp = get_contact(sip);
1563 sipmsg_add_header(msg, "Contact", tmp);
1564 g_free(tmp);
1565 purple_debug_info("simple", "got subscribe: name %s ourtag %s theirtag %s callid %s\n", watcher->name, watcher->dialog.ourtag, watcher->dialog.theirtag, watcher->dialog.callid);
1566 send_sip_response(sip->gc, msg, 200, "Ok", NULL);
1567 send_notify(sip, watcher);
1568 privend:
1569 g_free(from);
1570 g_free(theirtag);
1571 g_free(ourtag);
1572 }
1573
1574 static void process_input_message(struct simple_account_data *sip, struct sipmsg *msg) {
1575 gboolean found = FALSE;
1576 if(msg->response == 0) { /* request */
1577 if(purple_strequal(msg->method, "MESSAGE")) {
1578 process_incoming_message(sip, msg);
1579 found = TRUE;
1580 } else if(purple_strequal(msg->method, "NOTIFY")) {
1581 process_incoming_notify(sip, msg);
1582 found = TRUE;
1583 } else if(purple_strequal(msg->method, "SUBSCRIBE")) {
1584 process_incoming_subscribe(sip, msg);
1585 found = TRUE;
1586 } else {
1587 send_sip_response(sip->gc, msg, 501, "Not implemented", NULL);
1588 }
1589 } else { /* response */
1590 struct transaction *trans = transactions_find(sip, msg);
1591 if(trans) {
1592 if(msg->response == 407) {
1593 gchar *resend, *auth;
1594 const gchar *ptmp;
1595
1596 if(sip->proxy.retries > 3) return;
1597 sip->proxy.retries++;
1598 /* do proxy authentication */
1599
1600 ptmp = sipmsg_find_header(msg, "Proxy-Authenticate");
1601
1602 fill_auth(sip, ptmp, &sip->proxy);
1603 auth = auth_header(sip, &sip->proxy, trans->msg->method, trans->msg->target);
1604 sipmsg_remove_header(trans->msg, "Proxy-Authorization");
1605 sipmsg_add_header(trans->msg, "Proxy-Authorization", auth);
1606 g_free(auth);
1607 resend = sipmsg_to_string(trans->msg);
1608 /* resend request */
1609 sendout_pkt(sip->gc, resend);
1610 g_free(resend);
1611 } else {
1612 if(msg->response == 100) {
1613 /* ignore provisional response */
1614 purple_debug_info("simple", "got trying response\n");
1615 } else {
1616 sip->proxy.retries = 0;
1617 if(purple_strequal(trans->msg->method, "REGISTER")) {
1618
1619 /* This is encountered when a REGISTER request was ...
1620 */
1621 if(msg->response == 401) {
1622 /* denied until further authentication was provided. */
1623 sip->registrar.retries++;
1624 }
1625 else if (msg->response != 200) {
1626 /* denied for some other reason! */
1627 sip->registrar.retries++;
1628 }
1629 else {
1630 /* accepted! */
1631 sip->registrar.retries = 0;
1632 }
1633 } else {
1634 if(msg->response == 401) {
1635 /* This is encountered when a generic (MESSAGE, NOTIFY, etc)
1636 * was denied until further authorization is provided.
1637 */
1638 gchar *resend, *auth;
1639 const gchar *ptmp;
1640
1641 if(sip->registrar.retries > SIMPLE_REGISTER_RETRY_MAX) return;
1642 sip->registrar.retries++;
1643
1644 ptmp = sipmsg_find_header(msg, "WWW-Authenticate");
1645
1646 fill_auth(sip, ptmp, &sip->registrar);
1647 auth = auth_header(sip, &sip->registrar, trans->msg->method, trans->msg->target);
1648 sipmsg_remove_header(trans->msg, "Authorization");
1649 sipmsg_add_header(trans->msg, "Authorization", auth);
1650 g_free(auth);
1651 resend = sipmsg_to_string(trans->msg);
1652 /* resend request */
1653 sendout_pkt(sip->gc, resend);
1654 g_free(resend);
1655 } else {
1656 /* Reset any count of retries that may have
1657 * accumulated in the above branch.
1658 */
1659 sip->registrar.retries = 0;
1660 }
1661 }
1662 if(trans->callback) {
1663 /* call the callback to process response*/
1664 (trans->callback)(sip, msg, trans);
1665 }
1666 transactions_remove(sip, trans);
1667 }
1668 }
1669 found = TRUE;
1670 } else {
1671 purple_debug(PURPLE_DEBUG_MISC, "simple", "received response to unknown transaction");
1672 }
1673 }
1674 if(!found) {
1675 purple_debug(PURPLE_DEBUG_MISC, "simple", "received a unknown sip message with method %s and response %d\n", msg->method, msg->response);
1676 }
1677 }
1678
1679 static void process_input(struct simple_account_data *sip, struct sip_connection *conn)
1680 {
1681 char *cur;
1682 char *dummy;
1683 struct sipmsg *msg;
1684 int restlen;
1685 cur = conn->inbuf;
1686
1687 /* according to the RFC remove CRLF at the beginning */
1688 while(*cur == '\r' || *cur == '\n') {
1689 cur++;
1690 }
1691 if(cur != conn->inbuf) {
1692 memmove(conn->inbuf, cur, conn->inbufused - (cur - conn->inbuf));
1693 conn->inbufused = strlen(conn->inbuf);
1694 }
1695
1696 /* Received a full Header? */
1697 if((cur = strstr(conn->inbuf, "\r\n\r\n")) != NULL) {
1698 time_t currtime = time(NULL);
1699 cur += 2;
1700 cur[0] = '\0';
1701 purple_debug_info("simple", "\n\nreceived - %s\n######\n%s\n#######\n\n", ctime(&currtime), conn->inbuf);
1702 msg = sipmsg_parse_header(conn->inbuf);
1703
1704 if(!msg) {
1705 /* Should we re-use this error message (from lower in the function)? */
1706 purple_debug_misc("simple", "received a incomplete sip msg: %s\n", conn->inbuf);
1707 return;
1708 }
1709
1710 cur[0] = '\r';
1711 cur += 2;
1712 restlen = conn->inbufused - (cur - conn->inbuf);
1713 if(restlen >= msg->bodylen) {
1714 dummy = g_new(char, msg->bodylen + 1);
1715 memcpy(dummy, cur, msg->bodylen);
1716 dummy[msg->bodylen] = '\0';
1717 msg->body = dummy;
1718 cur += msg->bodylen;
1719 memmove(conn->inbuf, cur, conn->inbuflen - (cur - conn->inbuf));
1720 conn->inbufused = strlen(conn->inbuf);
1721 } else {
1722 sipmsg_free(msg);
1723 return;
1724 }
1725 purple_debug(PURPLE_DEBUG_MISC, "simple", "in process response response: %d\n", msg->response);
1726 process_input_message(sip, msg);
1727 sipmsg_free(msg);
1728 } else {
1729 purple_debug(PURPLE_DEBUG_MISC, "simple", "received a incomplete sip msg: %s\n", conn->inbuf);
1730 }
1731 }
1732
1733 static void simple_udp_process(gpointer data, gint source, PurpleInputCondition con) {
1734 PurpleConnection *gc = data;
1735 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
1736 struct sipmsg *msg;
1737 int len;
1738 time_t currtime = time(NULL);
1739
1740 static char buffer[65536];
1741 if((len = recv(source, buffer, sizeof(buffer) - 1, 0)) > 0) {
1742 buffer[len] = '\0';
1743 purple_debug_info("simple", "\n\nreceived - %s\n######\n%s\n#######\n\n", ctime(&currtime), buffer);
1744 msg = sipmsg_parse_msg(buffer);
1745 if (msg) {
1746 process_input_message(sip, msg);
1747 sipmsg_free(msg);
1748 }
1749 }
1750 }
1751
1752 static void simple_input_cb(gpointer data, gint source, PurpleInputCondition cond)
1753 {
1754 PurpleConnection *gc = data;
1755 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
1756 int len;
1757 struct sip_connection *conn = connection_find(sip, source);
1758 if(!conn) {
1759 purple_debug_error("simple", "Connection not found!\n");
1760 return;
1761 }
1762
1763 if(conn->inbuflen < conn->inbufused + SIMPLE_BUF_INC) {
1764 conn->inbuflen += SIMPLE_BUF_INC;
1765 conn->inbuf = g_realloc(conn->inbuf, conn->inbuflen);
1766 }
1767
1768 len = read(source, conn->inbuf + conn->inbufused, SIMPLE_BUF_INC - 1);
1769
1770 if(len < 0 && errno == EAGAIN)
1771 return;
1772 else if(len <= 0) {
1773 purple_debug_info("simple", "simple_input_cb: read error\n");
1774 connection_remove(sip, source);
1775 if(sip->fd == source) sip->fd = -1;
1776 return;
1777 }
1778 purple_connection_update_last_received(gc);
1779 conn->inbufused += len;
1780 conn->inbuf[conn->inbufused] = '\0';
1781
1782 process_input(sip, conn);
1783 }
1784
1785 /* Callback for new connections on incoming TCP port */
1786 static void simple_newconn_cb(gpointer data, gint source, PurpleInputCondition cond) {
1787 PurpleConnection *gc = data;
1788 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
1789 struct sip_connection *conn;
1790 int newfd;
1791
1792 newfd = accept(source, NULL, NULL);
1793 g_return_if_fail(newfd >= 0);
1794
1795 _purple_network_set_common_socket_flags(newfd);
1796
1797 conn = connection_create(sip, newfd);
1798
1799 conn->inputhandler = purple_input_add(newfd, PURPLE_INPUT_READ, simple_input_cb, gc);
1800 }
1801
1802 static void login_cb(gpointer data, gint source, const gchar *error_message) {
1803 PurpleConnection *gc = data;
1804 struct simple_account_data *sip;
1805 struct sip_connection *conn;
1806
1807 if(source < 0) {
1808 gchar *tmp = g_strdup_printf(_("Unable to connect: %s"),
1809 error_message);
1810 purple_connection_error(gc,
1811 PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
1812 g_free(tmp);
1813 return;
1814 }
1815
1816 sip = purple_connection_get_protocol_data(gc);
1817 sip->fd = source;
1818
1819 conn = connection_create(sip, source);
1820
1821 sip->registertimeout = g_timeout_add(g_random_int_range(10000, 100000), (GSourceFunc)subscribe_timeout, sip);
1822
1823 do_register(sip);
1824
1825 conn->inputhandler = purple_input_add(sip->fd, PURPLE_INPUT_READ, simple_input_cb, gc);
1826 }
1827
1828 static guint simple_ht_hash_nick(const char *nick) {
1829 char *lc = g_utf8_strdown(nick, -1);
1830 guint bucket = g_str_hash(lc);
1831 g_free(lc);
1832
1833 return bucket;
1834 }
1835
1836 static gboolean simple_ht_equals_nick(const char *nick1, const char *nick2) {
1837 return (purple_utf8_strcasecmp(nick1, nick2) == 0);
1838 }
1839
1840 static void simple_udp_host_resolved_listen_cb(int listenfd, gpointer data) {
1841 struct simple_account_data *sip = (struct simple_account_data*) data;
1842
1843 sip->listen_data = NULL;
1844
1845 if(listenfd == -1) {
1846 purple_connection_error(sip->gc,
1847 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1848 _("Unable to create listen socket"));
1849 return;
1850 }
1851
1852 /*
1853 * TODO: Is it correct to set sip->fd to the listenfd? For the TCP
1854 * listener we set sip->listenfd, but maybe UDP is different?
1855 * Maybe we use the same fd for outgoing data or something?
1856 */
1857 sip->fd = listenfd;
1858
1859 sip->listenport = purple_network_get_port_from_fd(sip->fd);
1860
1861 sip->listenpa = purple_input_add(sip->fd, PURPLE_INPUT_READ, simple_udp_process, sip->gc);
1862
1863 sip->resendtimeout = g_timeout_add(2500, (GSourceFunc) resend_timeout, sip);
1864 sip->registertimeout = g_timeout_add(g_random_int_range(10000, 100000), (GSourceFunc)subscribe_timeout, sip);
1865 do_register(sip);
1866 }
1867
1868 static void
1869 simple_udp_host_resolved(GObject *sender, GAsyncResult *result, gpointer data) {
1870 GError *error = NULL;
1871 GList *addresses = NULL;
1872 GInetAddress *inet_address = NULL;
1873 GSocketAddress *socket_address = NULL;
1874 struct simple_account_data *sip = (struct simple_account_data*) data;
1875
1876 addresses = g_resolver_lookup_by_name_finish(G_RESOLVER(sender),
1877 result, &error);
1878 if(error) {
1879 gchar *msg = g_strdup_printf(_("Unable to resolve hostname : %s"),
1880 error->message);
1881
1882 purple_connection_error(sip->gc,
1883 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1884 msg
1885 );
1886
1887 g_error_free(error);
1888
1889 return;
1890 }
1891
1892 inet_address = G_INET_ADDRESS(addresses->data);
1893 socket_address = g_inet_socket_address_new(inet_address, sip->realport);
1894 g_object_unref(G_OBJECT(inet_address));
1895
1896 g_socket_address_to_native(socket_address,
1897 &(sip->serveraddr),
1898 g_socket_address_get_native_size(socket_address),
1899 NULL);
1900
1901 g_object_unref(G_OBJECT(socket_address));
1902
1903 g_resolver_free_addresses(addresses);
1904
1905 /* create socket for incoming connections */
1906 sip->listen_data = purple_network_listen_range(5060, 5160, AF_UNSPEC, SOCK_DGRAM, TRUE,
1907 simple_udp_host_resolved_listen_cb, sip);
1908 if (sip->listen_data == NULL) {
1909 purple_connection_error(sip->gc,
1910 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1911 _("Unable to create listen socket"));
1912 return;
1913 }
1914 }
1915
1916 static void
1917 simple_tcp_connect_listen_cb(int listenfd, gpointer data) {
1918 struct simple_account_data *sip = (struct simple_account_data*) data;
1919
1920 sip->listen_data = NULL;
1921
1922 sip->listenfd = listenfd;
1923 if(sip->listenfd == -1) {
1924 purple_connection_error(sip->gc,
1925 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1926 _("Unable to create listen socket"));
1927 return;
1928 }
1929
1930 purple_debug_info("simple", "listenfd: %d\n", sip->listenfd);
1931 sip->listenport = purple_network_get_port_from_fd(sip->listenfd);
1932 sip->listenpa = purple_input_add(sip->listenfd, PURPLE_INPUT_READ,
1933 simple_newconn_cb, sip->gc);
1934 purple_debug_info("simple", "connecting to %s port %d\n",
1935 sip->realhostname, sip->realport);
1936 /* open tcp connection to the server */
1937 if (purple_proxy_connect(sip->gc, sip->account, sip->realhostname,
1938 sip->realport, login_cb, sip->gc) == NULL) {
1939 purple_connection_error(sip->gc,
1940 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1941 _("Unable to connect"));
1942 }
1943 }
1944
1945 static void
1946 srvresolved(GObject *sender, GAsyncResult *result, gpointer data) {
1947 GError *error = NULL;
1948 GList *targets = NULL;
1949 struct simple_account_data *sip;
1950 gchar *hostname;
1951 int port;
1952
1953 sip = data;
1954
1955 targets = g_resolver_lookup_service_finish(G_RESOLVER(sender),
1956 result, &error);
1957 if(error) {
1958 purple_debug_info("simple",
1959 "srv lookup failed, continuing with configured settings : %s",
1960 error->message);
1961
1962 g_error_free(error);
1963
1964 if(!purple_account_get_bool(sip->account, "useproxy", FALSE)) {
1965 hostname = g_strdup(sip->servername);
1966 } else {
1967 hostname = g_strdup(purple_account_get_string(sip->account, "proxy", sip->servername));
1968 }
1969 port = purple_account_get_int(sip->account, "port", 0);
1970 } else {
1971 GSrvTarget *target = (GSrvTarget *)targets->data;
1972
1973 hostname = g_strdup(g_srv_target_get_hostname(target));
1974 port = g_srv_target_get_port(target);
1975
1976 g_resolver_free_targets(targets);
1977 }
1978
1979 sip->realhostname = hostname;
1980 sip->realport = port;
1981
1982 if(!sip->realport)
1983 sip->realport = 5060;
1984
1985 /* TCP case */
1986 if(!sip->udp) {
1987 /* create socket for incoming connections */
1988 sip->listen_data = purple_network_listen_range(5060, 5160, AF_UNSPEC, SOCK_STREAM, TRUE,
1989 simple_tcp_connect_listen_cb, sip);
1990 if (sip->listen_data == NULL) {
1991 purple_connection_error(sip->gc,
1992 PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
1993 _("Unable to create listen socket"));
1994 return;
1995 }
1996 } else { /* UDP */
1997 GResolver *resolver = g_resolver_get_default();
1998
1999 purple_debug_info("simple", "using udp with server %s and port %d\n", hostname, port);
2000
2001 g_resolver_lookup_by_name_async(resolver,
2002 sip->realhostname,
2003 sip->cancellable,
2004 simple_udp_host_resolved,
2005 sip);
2006 g_object_unref(resolver);
2007 }
2008 }
2009
2010 static void simple_login(PurpleAccount *account)
2011 {
2012 PurpleConnection *gc;
2013 struct simple_account_data *sip;
2014 gchar **userserver;
2015 const gchar *hosttoconnect;
2016 const char *username = purple_account_get_username(account);
2017 GResolver *resolver;
2018
2019 gc = purple_account_get_connection(account);
2020
2021 purple_connection_set_flags(gc, PURPLE_CONNECTION_FLAG_NO_IMAGES);
2022
2023 if (strpbrk(username, " \t\v\r\n") != NULL) {
2024 purple_connection_error(gc,
2025 PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
2026 _("SIP usernames may not contain whitespaces or @ symbols"));
2027 return;
2028 }
2029
2030 sip = g_new0(struct simple_account_data, 1);
2031 purple_connection_set_protocol_data(gc, sip);
2032 sip->gc = gc;
2033 sip->fd = -1;
2034 sip->listenfd = -1;
2035 sip->account = account;
2036 sip->registerexpire = 900;
2037 sip->udp = purple_account_get_bool(account, "udp", FALSE);
2038 /* TODO: is there a good default grow size? */
2039 if(!sip->udp)
2040 sip->txbuf = purple_circular_buffer_new(0);
2041
2042 userserver = g_strsplit(username, "@", 2);
2043 if (userserver[1] == NULL || userserver[1][0] == '\0') {
2044 purple_connection_error(gc,
2045 PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
2046 _("SIP connect server not specified"));
2047 return;
2048 }
2049
2050 purple_connection_set_display_name(gc, userserver[0]);
2051 sip->username = g_strdup(userserver[0]);
2052 sip->servername = g_strdup(userserver[1]);
2053 sip->password = g_strdup(purple_connection_get_password(gc));
2054 g_strfreev(userserver);
2055
2056 sip->buddies = g_hash_table_new((GHashFunc)simple_ht_hash_nick, (GEqualFunc)simple_ht_equals_nick);
2057
2058 purple_connection_update_progress(gc, _("Connecting"), 1, 2);
2059
2060 /* TODO: Set the status correctly. */
2061 sip->status = g_strdup("available");
2062
2063 if(!purple_account_get_bool(account, "useproxy", FALSE)) {
2064 hosttoconnect = sip->servername;
2065 } else {
2066 hosttoconnect = purple_account_get_string(account, "proxy", sip->servername);
2067 }
2068
2069 resolver = g_resolver_get_default();
2070 g_resolver_lookup_service_async(resolver,
2071 "sip",
2072 sip->udp ? "udp" : "tcp",
2073 hosttoconnect,
2074 sip->cancellable,
2075 srvresolved,
2076 sip);
2077 g_object_unref(resolver);
2078 }
2079
2080 static void simple_close(PurpleConnection *gc)
2081 {
2082 struct simple_account_data *sip = purple_connection_get_protocol_data(gc);
2083
2084 if (!sip)
2085 return;
2086
2087 /* unregister */
2088 if (sip->registerstatus == SIMPLE_REGISTER_COMPLETE)
2089 {
2090 g_hash_table_foreach(sip->buddies,
2091 (GHFunc)simple_unsubscribe,
2092 (gpointer)sip);
2093
2094 if (purple_account_get_bool(sip->account, "dopublish", TRUE))
2095 send_closed_publish(sip);
2096
2097 do_register_exp(sip, 0);
2098 }
2099 connection_free_all(sip);
2100
2101 if (sip->listenpa)
2102 purple_input_remove(sip->listenpa);
2103 if (sip->tx_handler)
2104 purple_input_remove(sip->tx_handler);
2105 if (sip->resendtimeout)
2106 g_source_remove(sip->resendtimeout);
2107 if (sip->registertimeout)
2108 g_source_remove(sip->registertimeout);
2109
2110 g_cancellable_cancel(sip->cancellable);
2111 g_object_unref(G_OBJECT(sip->cancellable));
2112
2113 if (sip->listen_data != NULL)
2114 purple_network_listen_cancel(sip->listen_data);
2115
2116 if (sip->fd >= 0)
2117 close(sip->fd);
2118 if (sip->listenfd >= 0)
2119 close(sip->listenfd);
2120
2121 g_free(sip->servername);
2122 g_free(sip->username);
2123 g_free(sip->password);
2124 g_free(sip->registrar.nonce);
2125 g_free(sip->registrar.opaque);
2126 g_free(sip->registrar.target);
2127 g_free(sip->registrar.realm);
2128 g_free(sip->registrar.digest_session_key);
2129 g_free(sip->proxy.nonce);
2130 g_free(sip->proxy.opaque);
2131 g_free(sip->proxy.target);
2132 g_free(sip->proxy.realm);
2133 g_free(sip->proxy.digest_session_key);
2134 g_free(sip->status);
2135 g_hash_table_destroy(sip->buddies);
2136 g_free(sip->regcallid);
2137 while (sip->transactions)
2138 transactions_remove(sip, sip->transactions->data);
2139 g_free(sip->publish_etag);
2140 if (sip->txbuf)
2141 g_object_unref(G_OBJECT(sip->txbuf));
2142 g_free(sip->realhostname);
2143
2144 g_free(sip);
2145 purple_connection_set_protocol_data(gc, NULL);
2146 }
2147
2148 static void
2149 simple_protocol_init(PurpleProtocol *protocol)
2150 {
2151 PurpleAccountUserSplit *split;
2152 PurpleAccountOption *option;
2153
2154 protocol->id = "prpl-simple";
2155 protocol->name = "SIMPLE";
2156
2157 split = purple_account_user_split_new(_("Server"), "", '@');
2158 protocol->user_splits = g_list_append(protocol->user_splits, split);
2159
2160 option = purple_account_option_bool_new(_("Publish status (note: everyone may watch you)"), "dopublish", TRUE);
2161 protocol->account_options = g_list_append(protocol->account_options, option);
2162
2163 option = purple_account_option_int_new(_("Connect port"), "port", 0);
2164 protocol->account_options = g_list_append(protocol->account_options, option);
2165
2166 option = purple_account_option_bool_new(_("Use UDP"), "udp", FALSE);
2167 protocol->account_options = g_list_append(protocol->account_options, option);
2168 option = purple_account_option_bool_new(_("Use proxy"), "useproxy", FALSE);
2169 protocol->account_options = g_list_append(protocol->account_options, option);
2170 option = purple_account_option_string_new(_("Proxy"), "proxy", "");
2171 protocol->account_options = g_list_append(protocol->account_options, option);
2172 option = purple_account_option_string_new(_("Auth User"), "authuser", "");
2173 protocol->account_options = g_list_append(protocol->account_options, option);
2174 option = purple_account_option_string_new(_("Auth Domain"), "authdomain", "");
2175 protocol->account_options = g_list_append(protocol->account_options, option);
2176 }
2177
2178 static void
2179 simple_protocol_class_init(PurpleProtocolClass *klass)
2180 {
2181 klass->login = simple_login;
2182 klass->close = simple_close;
2183 klass->status_types = simple_status_types;
2184 klass->list_icon = simple_list_icon;
2185 }
2186
2187 static void
2188 simple_protocol_server_iface_init(PurpleProtocolServerInterface *server_iface)
2189 {
2190 server_iface->set_status = simple_set_status;
2191 server_iface->add_buddy = simple_add_buddy;
2192 server_iface->remove_buddy = simple_remove_buddy;
2193 server_iface->keepalive = simple_keep_alive;
2194 server_iface->send_raw = simple_send_raw;
2195 }
2196
2197 static void
2198 simple_protocol_im_iface_init(PurpleProtocolIMInterface *im_iface)
2199 {
2200 im_iface->send = simple_im_send;
2201 im_iface->send_typing = simple_typing;
2202 }
2203
2204 PURPLE_DEFINE_TYPE_EXTENDED(
2205 SIMPLEProtocol, simple_protocol, PURPLE_TYPE_PROTOCOL, 0,
2206
2207 PURPLE_IMPLEMENT_INTERFACE_STATIC(PURPLE_TYPE_PROTOCOL_SERVER,
2208 simple_protocol_server_iface_init)
2209
2210 PURPLE_IMPLEMENT_INTERFACE_STATIC(PURPLE_TYPE_PROTOCOL_IM,
2211 simple_protocol_im_iface_init)
2212 );
2213
2214 static PurplePluginInfo *
2215 plugin_query(GError **error)
2216 {
2217 const gchar * const authors[] = {
2218 "Thomas Butter <butter@uni-mannheim.de>",
2219 NULL
2220 };
2221
2222 return purple_plugin_info_new(
2223 "id", "prpl-simple",
2224 "name", "SIMPLE Protocol",
2225 "version", DISPLAY_VERSION,
2226 "category", N_("Protocol"),
2227 "summary", N_("SIP/SIMPLE Protocol Plugin"),
2228 "description", N_("The SIP/SIMPLE Protocol Plugin"),
2229 "authors", authors,
2230 "website", PURPLE_WEBSITE,
2231 "abi-version", PURPLE_ABI_VERSION,
2232 "flags", PURPLE_PLUGIN_INFO_FLAGS_INTERNAL |
2233 PURPLE_PLUGIN_INFO_FLAGS_AUTO_LOAD,
2234 NULL
2235 );
2236 }
2237
2238 static gboolean
2239 plugin_load(PurplePlugin *plugin, GError **error)
2240 {
2241 simple_protocol_register_type(plugin);
2242
2243 my_protocol = purple_protocols_add(SIMPLE_TYPE_PROTOCOL, error);
2244 if (!my_protocol)
2245 return FALSE;
2246
2247 purple_signal_connect(purple_get_core(), "uri-handler", plugin,
2248 PURPLE_CALLBACK(simple_uri_handler), NULL);
2249
2250 return TRUE;
2251 }
2252
2253 static gboolean
2254 plugin_unload(PurplePlugin *plugin, GError **error)
2255 {
2256 purple_signal_disconnect(purple_get_core(), "uri-handler", plugin,
2257 PURPLE_CALLBACK(simple_uri_handler));
2258
2259 if (!purple_protocols_remove(my_protocol, error))
2260 return FALSE;
2261
2262 return TRUE;
2263 }
2264
2265 PURPLE_PLUGIN_INIT(simple, plugin_query, plugin_load, plugin_unload);
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