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Commit | Line | Data |
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1 | ||
2 | /* | |
3 | * aim_conn.c | |
4 | * | |
5 | * Does all this gloriously nifty connection handling stuff... | |
6 | * | |
7 | */ | |
8 | ||
9 | #define FAIM_INTERNAL | |
10 | #include <aim.h> | |
11 | ||
12 | #ifndef _WIN32 | |
13 | #include <netdb.h> | |
14 | #include <sys/socket.h> | |
15 | #include <netinet/in.h> | |
16 | #endif | |
17 | ||
18 | /** | |
19 | * aim_connrst - Clears out connection list, killing remaining connections. | |
20 | * @sess: Session to be cleared | |
21 | * | |
22 | * Clears out the connection list and kills any connections left. | |
23 | * | |
24 | */ | |
25 | faim_internal void aim_connrst(struct aim_session_t *sess) | |
26 | { | |
27 | faim_mutex_init(&sess->connlistlock); | |
28 | if (sess->connlist) { | |
29 | struct aim_conn_t *cur = sess->connlist, *tmp; | |
30 | ||
31 | while(cur) { | |
32 | tmp = cur->next; | |
33 | aim_conn_close(cur); | |
34 | free(cur); | |
35 | cur = tmp; | |
36 | } | |
37 | } | |
38 | sess->connlist = NULL; | |
39 | return; | |
40 | } | |
41 | ||
42 | /** | |
43 | * aim_conn_init - Reset a connection to default values. | |
44 | * @deadconn: Connection to be reset | |
45 | * | |
46 | * Initializes and/or resets a connection structure. | |
47 | * | |
48 | */ | |
49 | static void aim_conn_init(struct aim_conn_t *deadconn) | |
50 | { | |
51 | if (!deadconn) | |
52 | return; | |
53 | ||
54 | deadconn->fd = -1; | |
55 | deadconn->subtype = -1; | |
56 | deadconn->type = -1; | |
57 | deadconn->seqnum = 0; | |
58 | deadconn->lastactivity = 0; | |
59 | deadconn->forcedlatency = 0; | |
60 | deadconn->handlerlist = NULL; | |
61 | deadconn->priv = NULL; | |
62 | faim_mutex_init(&deadconn->active); | |
63 | faim_mutex_init(&deadconn->seqnum_lock); | |
64 | ||
65 | return; | |
66 | } | |
67 | ||
68 | /** | |
69 | * aim_conn_getnext - Gets a new connection structure. | |
70 | * @sess: Session | |
71 | * | |
72 | * Allocate a new empty connection structure. | |
73 | * | |
74 | */ | |
75 | faim_internal struct aim_conn_t *aim_conn_getnext(struct aim_session_t *sess) | |
76 | { | |
77 | struct aim_conn_t *newconn, *cur; | |
78 | ||
79 | if (!(newconn = malloc(sizeof(struct aim_conn_t)))) | |
80 | return NULL; | |
81 | ||
82 | memset(newconn, 0, sizeof(struct aim_conn_t)); | |
83 | aim_conn_init(newconn); | |
84 | newconn->next = NULL; | |
85 | ||
86 | faim_mutex_lock(&sess->connlistlock); | |
87 | if (sess->connlist == NULL) | |
88 | sess->connlist = newconn; | |
89 | else { | |
90 | for (cur = sess->connlist; cur->next; cur = cur->next) | |
91 | ; | |
92 | cur->next = newconn; | |
93 | } | |
94 | faim_mutex_unlock(&sess->connlistlock); | |
95 | ||
96 | return newconn; | |
97 | } | |
98 | ||
99 | /** | |
100 | * aim_conn_kill - Close and free a connection. | |
101 | * @sess: Session for the connection | |
102 | * @deadconn: Connection to be freed | |
103 | * | |
104 | * Close, clear, and free a connection structure. Should never be | |
105 | * called from within libfaim. | |
106 | * | |
107 | */ | |
108 | faim_export void aim_conn_kill(struct aim_session_t *sess, struct aim_conn_t **deadconn) | |
109 | { | |
110 | struct aim_conn_t *cur; | |
111 | ||
112 | if (!deadconn || !*deadconn) | |
113 | return; | |
114 | ||
115 | aim_tx_cleanqueue(sess, *deadconn); | |
116 | ||
117 | faim_mutex_lock(&sess->connlistlock); | |
118 | if (sess->connlist == NULL) | |
119 | ; | |
120 | else if (sess->connlist->next == NULL) { | |
121 | if (sess->connlist == *deadconn) | |
122 | sess->connlist = NULL; | |
123 | } else { | |
124 | cur = sess->connlist; | |
125 | while (cur->next) { | |
126 | if (cur->next == *deadconn) { | |
127 | cur->next = cur->next->next; | |
128 | break; | |
129 | } | |
130 | cur = cur->next; | |
131 | } | |
132 | } | |
133 | faim_mutex_unlock(&sess->connlistlock); | |
134 | ||
135 | /* XXX: do we need this for txqueue too? */ | |
136 | aim_rxqueue_cleanbyconn(sess, *deadconn); | |
137 | ||
138 | if ((*deadconn)->fd != -1) | |
139 | aim_conn_close(*deadconn); | |
140 | if ((*deadconn)->priv) | |
141 | free((*deadconn)->priv); | |
142 | free(*deadconn); | |
143 | deadconn = NULL; | |
144 | ||
145 | return; | |
146 | } | |
147 | ||
148 | /** | |
149 | * aim_conn_close - Close a connection | |
150 | * @deadconn: Connection to close | |
151 | * | |
152 | * Close (but not free) a connection. | |
153 | * | |
154 | * This leaves everything untouched except for clearing the | |
155 | * handler list and setting the fd to -1 (used to recognize | |
156 | * dead connections). | |
157 | * | |
158 | */ | |
159 | faim_export void aim_conn_close(struct aim_conn_t *deadconn) | |
160 | { | |
161 | ||
162 | faim_mutex_destroy(&deadconn->active); | |
163 | faim_mutex_destroy(&deadconn->seqnum_lock); | |
164 | if (deadconn->fd >= 3) | |
165 | close(deadconn->fd); | |
166 | deadconn->fd = -1; | |
167 | if (deadconn->handlerlist) | |
168 | aim_clearhandlers(deadconn); | |
169 | ||
170 | return; | |
171 | } | |
172 | ||
173 | /** | |
174 | * aim_getconn_type - Find a connection of a specific type | |
175 | * @sess: Session to search | |
176 | * @type: Type of connection to look for | |
177 | * | |
178 | * Searches for a connection of the specified type in the | |
179 | * specified session. Returns the first connection of that | |
180 | * type found. | |
181 | * | |
182 | */ | |
183 | faim_export struct aim_conn_t *aim_getconn_type(struct aim_session_t *sess, | |
184 | int type) | |
185 | { | |
186 | struct aim_conn_t *cur; | |
187 | ||
188 | faim_mutex_lock(&sess->connlistlock); | |
189 | for (cur = sess->connlist; cur; cur = cur->next) { | |
190 | if ((cur->type == type) && !(cur->status & AIM_CONN_STATUS_INPROGRESS)) | |
191 | break; | |
192 | } | |
193 | faim_mutex_unlock(&sess->connlistlock); | |
194 | return cur; | |
195 | } | |
196 | ||
197 | /** | |
198 | * aim_proxyconnect - An extrememly quick and dirty SOCKS5 interface. | |
199 | * @sess: Session to connect | |
200 | * @host: Host to connect to | |
201 | * @port: Port to connect to | |
202 | * @statusret: Return value of the connection | |
203 | * | |
204 | * Attempts to connect to the specified host via the configured | |
205 | * proxy settings, if present. If no proxy is configured for | |
206 | * this session, the connection is done directly. | |
207 | * | |
208 | */ | |
209 | static int aim_proxyconnect(struct aim_session_t *sess, | |
210 | char *host, unsigned short port, | |
211 | int *statusret) | |
212 | { | |
213 | int fd = -1; | |
214 | ||
215 | if (strlen(sess->socksproxy.server)) { /* connecting via proxy */ | |
216 | int i; | |
217 | unsigned char buf[512]; | |
218 | struct sockaddr_in sa; | |
219 | struct hostent *hp; | |
220 | char *proxy; | |
221 | unsigned short proxyport = 1080; | |
222 | ||
223 | for(i=0;i<(int)strlen(sess->socksproxy.server);i++) { | |
224 | if (sess->socksproxy.server[i] == ':') { | |
225 | proxyport = atoi(&(sess->socksproxy.server[i+1])); | |
226 | break; | |
227 | } | |
228 | } | |
229 | proxy = (char *)malloc(i+1); | |
230 | strncpy(proxy, sess->socksproxy.server, i); | |
231 | proxy[i] = '\0'; | |
232 | ||
233 | if (!(hp = gethostbyname(proxy))) { | |
234 | faimdprintf(sess, 0, "proxyconnect: unable to resolve proxy name\n"); | |
235 | *statusret = (h_errno | AIM_CONN_STATUS_RESOLVERR); | |
236 | return -1; | |
237 | } | |
238 | free(proxy); | |
239 | ||
240 | memset(&sa.sin_zero, 0, 8); | |
241 | sa.sin_port = htons(proxyport); | |
242 | memcpy(&sa.sin_addr, hp->h_addr, hp->h_length); | |
243 | sa.sin_family = hp->h_addrtype; | |
244 | ||
245 | fd = socket(hp->h_addrtype, SOCK_STREAM, 0); | |
246 | if (connect(fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) < 0) { | |
247 | faimdprintf(sess, 0, "proxyconnect: unable to connect to proxy\n"); | |
248 | close(fd); | |
249 | return -1; | |
250 | } | |
251 | ||
252 | i = 0; | |
253 | buf[0] = 0x05; /* SOCKS version 5 */ | |
254 | if (strlen(sess->socksproxy.username)) { | |
255 | buf[1] = 0x02; /* two methods */ | |
256 | buf[2] = 0x00; /* no authentication */ | |
257 | buf[3] = 0x02; /* username/password authentication */ | |
258 | i = 4; | |
259 | } else { | |
260 | buf[1] = 0x01; | |
261 | buf[2] = 0x00; | |
262 | i = 3; | |
263 | } | |
264 | ||
265 | if (write(fd, buf, i) < i) { | |
266 | *statusret = errno; | |
267 | close(fd); | |
268 | return -1; | |
269 | } | |
270 | ||
271 | if (read(fd, buf, 2) < 2) { | |
272 | *statusret = errno; | |
273 | close(fd); | |
274 | return -1; | |
275 | } | |
276 | ||
277 | if ((buf[0] != 0x05) || (buf[1] == 0xff)) { | |
278 | *statusret = EINVAL; | |
279 | close(fd); | |
280 | return -1; | |
281 | } | |
282 | ||
283 | /* check if we're doing username authentication */ | |
284 | if (buf[1] == 0x02) { | |
285 | i = aimutil_put8(buf, 0x01); /* version 1 */ | |
286 | i += aimutil_put8(buf+i, strlen(sess->socksproxy.username)); | |
287 | i += aimutil_putstr(buf+i, sess->socksproxy.username, strlen(sess->socksproxy.username)); | |
288 | i += aimutil_put8(buf+i, strlen(sess->socksproxy.password)); | |
289 | i += aimutil_putstr(buf+i, sess->socksproxy.password, strlen(sess->socksproxy.password)); | |
290 | if (write(fd, buf, i) < i) { | |
291 | *statusret = errno; | |
292 | close(fd); | |
293 | return -1; | |
294 | } | |
295 | if (read(fd, buf, 2) < 2) { | |
296 | *statusret = errno; | |
297 | close(fd); | |
298 | return -1; | |
299 | } | |
300 | if ((buf[0] != 0x01) || (buf[1] != 0x00)) { | |
301 | *statusret = EINVAL; | |
302 | close(fd); | |
303 | return -1; | |
304 | } | |
305 | } | |
306 | ||
307 | i = aimutil_put8(buf, 0x05); | |
308 | i += aimutil_put8(buf+i, 0x01); /* CONNECT */ | |
309 | i += aimutil_put8(buf+i, 0x00); /* reserved */ | |
310 | i += aimutil_put8(buf+i, 0x03); /* address type: host name */ | |
311 | i += aimutil_put8(buf+i, strlen(host)); | |
312 | i += aimutil_putstr(buf+i, host, strlen(host)); | |
313 | i += aimutil_put16(buf+i, port); | |
314 | ||
315 | if (write(fd, buf, i) < i) { | |
316 | *statusret = errno; | |
317 | close(fd); | |
318 | return -1; | |
319 | } | |
320 | if (read(fd, buf, 10) < 10) { | |
321 | *statusret = errno; | |
322 | close(fd); | |
323 | return -1; | |
324 | } | |
325 | if ((buf[0] != 0x05) || (buf[1] != 0x00)) { | |
326 | *statusret = EINVAL; | |
327 | close(fd); | |
328 | return -1; | |
329 | } | |
330 | ||
331 | } else { /* connecting directly */ | |
332 | struct sockaddr_in sa; | |
333 | struct hostent *hp; | |
334 | ||
335 | if (!(hp = gethostbyname(host))) { | |
336 | *statusret = (h_errno | AIM_CONN_STATUS_RESOLVERR); | |
337 | return -1; | |
338 | } | |
339 | ||
340 | memset(&sa, 0, sizeof(struct sockaddr_in)); | |
341 | sa.sin_port = htons(port); | |
342 | memcpy(&sa.sin_addr, hp->h_addr, hp->h_length); | |
343 | sa.sin_family = hp->h_addrtype; | |
344 | ||
345 | fd = socket(hp->h_addrtype, SOCK_STREAM, 0); | |
346 | ||
347 | if (sess->flags & AIM_SESS_FLAGS_NONBLOCKCONNECT) | |
348 | fcntl(fd, F_SETFL, O_NONBLOCK); /* XXX save flags */ | |
349 | ||
350 | if (connect(fd, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) < 0) { | |
351 | if (sess->flags & AIM_SESS_FLAGS_NONBLOCKCONNECT) { | |
352 | if ((errno == EINPROGRESS) || (errno == EINTR)) { | |
353 | if (statusret) | |
354 | *statusret |= AIM_CONN_STATUS_INPROGRESS; | |
355 | return fd; | |
356 | } | |
357 | } | |
358 | close(fd); | |
359 | fd = -1; | |
360 | } | |
361 | } | |
362 | return fd; | |
363 | } | |
364 | ||
365 | /** | |
366 | * aim_cloneconn - clone an aim_conn_t | |
367 | * @sess: session containing parent | |
368 | * @src: connection to clone | |
369 | * | |
370 | * A new connection is allocated, and the values are filled in | |
371 | * appropriately. Note that this function sets the new connnection's | |
372 | * ->priv pointer to be equal to that of its parent: only the pointer | |
373 | * is copied, not the data it points to. | |
374 | * | |
375 | * This function returns a pointer to the new aim_conn_t, or %NULL on | |
376 | * error | |
377 | */ | |
378 | faim_internal struct aim_conn_t *aim_cloneconn(struct aim_session_t *sess, | |
379 | struct aim_conn_t *src) | |
380 | { | |
381 | struct aim_conn_t *conn; | |
382 | struct aim_rxcblist_t *cur; | |
383 | ||
384 | if (!(conn = aim_conn_getnext(sess))) | |
385 | return NULL; | |
386 | ||
387 | faim_mutex_lock(&conn->active); | |
388 | ||
389 | conn->fd = src->fd; | |
390 | conn->type = src->type; | |
391 | conn->subtype = src->subtype; | |
392 | conn->seqnum = src->seqnum; | |
393 | conn->priv = src->priv; | |
394 | conn->lastactivity = src->lastactivity; | |
395 | conn->forcedlatency = src->forcedlatency; | |
396 | ||
397 | /* clone handler list */ | |
398 | for (cur = src->handlerlist; cur; cur = cur->next) { | |
399 | aim_conn_addhandler(sess, conn, cur->family, cur->type, | |
400 | cur->handler, cur->flags); | |
401 | } | |
402 | ||
403 | faim_mutex_unlock(&conn->active); | |
404 | ||
405 | return conn; | |
406 | } | |
407 | ||
408 | /** | |
409 | * aim_newconn - Open a new connection | |
410 | * @sess: Session to create connection in | |
411 | * @type: Type of connection to create | |
412 | * @dest: Host to connect to (in "host:port" syntax) | |
413 | * | |
414 | * Opens a new connection to the specified dest host of specified | |
415 | * type, using the proxy settings if available. If @host is %NULL, | |
416 | * the connection is allocated and returned, but no connection | |
417 | * is made. | |
418 | * | |
419 | * FIXME: Return errors in a more sane way. | |
420 | * | |
421 | */ | |
422 | faim_export struct aim_conn_t *aim_newconn(struct aim_session_t *sess, | |
423 | int type, char *dest) | |
424 | { | |
425 | struct aim_conn_t *connstruct; | |
426 | int ret; | |
427 | u_short port = FAIM_LOGIN_PORT; | |
428 | char *host = NULL; | |
429 | int i=0; | |
430 | ||
431 | if ((connstruct=aim_conn_getnext(sess))==NULL) | |
432 | return NULL; | |
433 | ||
434 | faim_mutex_lock(&connstruct->active); | |
435 | ||
436 | connstruct->type = type; | |
437 | ||
438 | if (!dest) { /* just allocate a struct */ | |
439 | connstruct->fd = -1; | |
440 | connstruct->status = 0; | |
441 | faim_mutex_unlock(&connstruct->active); | |
442 | return connstruct; | |
443 | } | |
444 | ||
445 | /* | |
446 | * As of 23 Jul 1999, AOL now sends the port number, preceded by a | |
447 | * colon, in the BOS redirect. This fatally breaks all previous | |
448 | * libfaims. Bad, bad AOL. | |
449 | * | |
450 | * We put this here to catch every case. | |
451 | * | |
452 | */ | |
453 | ||
454 | for(i=0;i<(int)strlen(dest);i++) { | |
455 | if (dest[i] == ':') { | |
456 | port = atoi(&(dest[i+1])); | |
457 | break; | |
458 | } | |
459 | } | |
460 | host = (char *)malloc(i+1); | |
461 | strncpy(host, dest, i); | |
462 | host[i] = '\0'; | |
463 | ||
464 | if ((ret = aim_proxyconnect(sess, host, port, &connstruct->status)) < 0) { | |
465 | connstruct->fd = -1; | |
466 | connstruct->status = (errno | AIM_CONN_STATUS_CONNERR); | |
467 | free(host); | |
468 | faim_mutex_unlock(&connstruct->active); | |
469 | return connstruct; | |
470 | } else | |
471 | connstruct->fd = ret; | |
472 | ||
473 | faim_mutex_unlock(&connstruct->active); | |
474 | ||
475 | free(host); | |
476 | ||
477 | return connstruct; | |
478 | } | |
479 | ||
480 | /** | |
481 | * aim_conngetmaxfd - Return the highest valued file discriptor in session | |
482 | * @sess: Session to search | |
483 | * | |
484 | * Returns the highest valued filed descriptor of all open | |
485 | * connections in @sess. | |
486 | * | |
487 | */ | |
488 | faim_export int aim_conngetmaxfd(struct aim_session_t *sess) | |
489 | { | |
490 | int j = 0; | |
491 | struct aim_conn_t *cur; | |
492 | ||
493 | faim_mutex_lock(&sess->connlistlock); | |
494 | for (cur = sess->connlist; cur; cur = cur->next) { | |
495 | if (cur->fd > j) | |
496 | j = cur->fd; | |
497 | } | |
498 | faim_mutex_unlock(&sess->connlistlock); | |
499 | ||
500 | return j; | |
501 | } | |
502 | ||
503 | /** | |
504 | * aim_conn_in_sess - Predicate to test the precense of a connection in a sess | |
505 | * @sess: Session to look in | |
506 | * @conn: Connection to look for | |
507 | * | |
508 | * Searches @sess for the passed connection. Returns 1 if its present, | |
509 | * zero otherwise. | |
510 | * | |
511 | */ | |
512 | faim_export int aim_conn_in_sess(struct aim_session_t *sess, struct aim_conn_t *conn) | |
513 | { | |
514 | struct aim_conn_t *cur; | |
515 | ||
516 | faim_mutex_lock(&sess->connlistlock); | |
517 | for(cur = sess->connlist; cur; cur = cur->next) | |
518 | if(cur == conn) { | |
519 | faim_mutex_unlock(&sess->connlistlock); | |
520 | return 1; | |
521 | } | |
522 | faim_mutex_unlock(&sess->connlistlock); | |
523 | return 0; | |
524 | } | |
525 | ||
526 | /** | |
527 | * aim_select - Wait for a socket with data or timeout | |
528 | * @sess: Session to wait on | |
529 | * @timeout: How long to wait | |
530 | * @status: Return status | |
531 | * | |
532 | * Waits for a socket with data or for timeout, whichever comes first. | |
533 | * See select(2). | |
534 | * | |
535 | * Return codes in *status: | |
536 | * -1 error in select() (%NULL returned) | |
537 | * 0 no events pending (%NULL returned) | |
538 | * 1 outgoing data pending (%NULL returned) | |
539 | * 2 incoming data pending (connection with pending data returned) | |
540 | * | |
541 | * XXX: we could probably stand to do a little courser locking here. | |
542 | * | |
543 | */ | |
544 | faim_export struct aim_conn_t *aim_select(struct aim_session_t *sess, | |
545 | struct timeval *timeout, | |
546 | int *status) | |
547 | { | |
548 | struct aim_conn_t *cur; | |
549 | fd_set fds, wfds; | |
550 | int maxfd = 0; | |
551 | int i, haveconnecting = 0; | |
552 | ||
553 | faim_mutex_lock(&sess->connlistlock); | |
554 | if (sess->connlist == NULL) { | |
555 | faim_mutex_unlock(&sess->connlistlock); | |
556 | *status = -1; | |
557 | return NULL; | |
558 | } | |
559 | faim_mutex_unlock(&sess->connlistlock); | |
560 | ||
561 | FD_ZERO(&fds); | |
562 | FD_ZERO(&wfds); | |
563 | maxfd = 0; | |
564 | ||
565 | faim_mutex_lock(&sess->connlistlock); | |
566 | for (cur = sess->connlist; cur; cur = cur->next) { | |
567 | if (cur->fd == -1) { | |
568 | /* don't let invalid/dead connections sit around */ | |
569 | *status = 2; | |
570 | faim_mutex_unlock(&sess->connlistlock); | |
571 | return cur; | |
572 | } else if (cur->status & AIM_CONN_STATUS_INPROGRESS) { | |
573 | FD_SET(cur->fd, &wfds); | |
574 | ||
575 | haveconnecting++; | |
576 | } | |
577 | FD_SET(cur->fd, &fds); | |
578 | if (cur->fd > maxfd) | |
579 | maxfd = cur->fd; | |
580 | } | |
581 | faim_mutex_unlock(&sess->connlistlock); | |
582 | ||
583 | /* | |
584 | * If we have data waiting to be sent, return | |
585 | * | |
586 | * We have to not do this if theres at least one | |
587 | * connection thats still connecting, since that connection | |
588 | * may have queued data and this return would prevent | |
589 | * the connection from ever completing! This is a major | |
590 | * inadequacy of the libfaim way of doing things. It means | |
591 | * that nothing can transmit as long as there's connecting | |
592 | * sockets. Evil. | |
593 | * | |
594 | * But its still better than having blocking connects. | |
595 | * | |
596 | */ | |
597 | if (!haveconnecting && (sess->queue_outgoing != NULL)) { | |
598 | *status = 1; | |
599 | return NULL; | |
600 | } | |
601 | ||
602 | if ((i = select(maxfd+1, &fds, &wfds, NULL, timeout))>=1) { | |
603 | faim_mutex_lock(&sess->connlistlock); | |
604 | for (cur = sess->connlist; cur; cur = cur->next) { | |
605 | if ((FD_ISSET(cur->fd, &fds)) || | |
606 | ((cur->status & AIM_CONN_STATUS_INPROGRESS) && | |
607 | FD_ISSET(cur->fd, &wfds))) { | |
608 | *status = 2; | |
609 | faim_mutex_unlock(&sess->connlistlock); | |
610 | return cur; /* XXX race condition here -- shouldnt unlock connlist */ | |
611 | } | |
612 | } | |
613 | *status = 0; /* shouldn't happen */ | |
614 | } else if ((i == -1) && (errno == EINTR)) /* treat interrupts as a timeout */ | |
615 | *status = 0; | |
616 | else | |
617 | *status = i; /* can be 0 or -1 */ | |
618 | ||
619 | faim_mutex_unlock(&sess->connlistlock); | |
620 | ||
621 | return NULL; /* no waiting or error, return */ | |
622 | } | |
623 | ||
624 | /** | |
625 | * aim_conn_isready - Test if a connection is marked ready | |
626 | * @conn: Connection to test | |
627 | * | |
628 | * Returns true if the connection is ready, false otherwise. | |
629 | * Returns -1 if the connection is invalid. | |
630 | * | |
631 | * XXX: This is deprecated. | |
632 | * | |
633 | */ | |
634 | faim_export int aim_conn_isready(struct aim_conn_t *conn) | |
635 | { | |
636 | if (conn) | |
637 | return (conn->status & 0x0001); | |
638 | return -1; | |
639 | } | |
640 | ||
641 | /** | |
642 | * aim_conn_setstatus - Set the status of a connection | |
643 | * @conn: Connection | |
644 | * @status: New status | |
645 | * | |
646 | * @newstatus is %XOR'd with the previous value of the connection | |
647 | * status and returned. Returns -1 if the connection is invalid. | |
648 | * | |
649 | * This isn't real useful. | |
650 | * | |
651 | */ | |
652 | faim_export int aim_conn_setstatus(struct aim_conn_t *conn, int status) | |
653 | { | |
654 | int val; | |
655 | ||
656 | if (!conn) | |
657 | return -1; | |
658 | ||
659 | faim_mutex_lock(&conn->active); | |
660 | val = conn->status ^= status; | |
661 | faim_mutex_unlock(&conn->active); | |
662 | ||
663 | return val; | |
664 | } | |
665 | ||
666 | /** | |
667 | * aim_conn_setlatency - Set a forced latency value for connection | |
668 | * @conn: Conn to set latency for | |
669 | * @newval: Number of seconds to force between transmits | |
670 | * | |
671 | * Causes @newval seconds to be spent between transmits on a connection. | |
672 | * | |
673 | * This is my lame attempt at overcoming not understanding the rate | |
674 | * limiting. | |
675 | * | |
676 | * XXX: This should really be replaced with something that scales and | |
677 | * backs off like the real rate limiting does. | |
678 | * | |
679 | */ | |
680 | faim_export int aim_conn_setlatency(struct aim_conn_t *conn, int newval) | |
681 | { | |
682 | if (!conn) | |
683 | return -1; | |
684 | ||
685 | faim_mutex_lock(&conn->active); | |
686 | conn->forcedlatency = newval; | |
687 | conn->lastactivity = 0; /* reset this just to make sure */ | |
688 | faim_mutex_unlock(&conn->active); | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | /** | |
694 | * aim_setupproxy - Configure a proxy for this session | |
695 | * @sess: Session to set proxy for | |
696 | * @server: SOCKS server | |
697 | * @username: SOCKS username | |
698 | * @password: SOCKS password | |
699 | * | |
700 | * Call this with your SOCKS5 proxy server parameters before | |
701 | * the first call to aim_newconn(). If called with all %NULL | |
702 | * args, it will clear out a previously set proxy. | |
703 | * | |
704 | * Set username and password to %NULL if not applicable. | |
705 | * | |
706 | */ | |
707 | faim_export void aim_setupproxy(struct aim_session_t *sess, char *server, char *username, char *password) | |
708 | { | |
709 | /* clear out the proxy info */ | |
710 | if (!server || !strlen(server)) { | |
711 | memset(sess->socksproxy.server, 0, sizeof(sess->socksproxy.server)); | |
712 | memset(sess->socksproxy.username, 0, sizeof(sess->socksproxy.username)); | |
713 | memset(sess->socksproxy.password, 0, sizeof(sess->socksproxy.password)); | |
714 | return; | |
715 | } | |
716 | ||
717 | strncpy(sess->socksproxy.server, server, sizeof(sess->socksproxy.server)); | |
718 | if (username && strlen(username)) | |
719 | strncpy(sess->socksproxy.username, username, sizeof(sess->socksproxy.username)); | |
720 | if (password && strlen(password)) | |
721 | strncpy(sess->socksproxy.password, password, sizeof(sess->socksproxy.password)); | |
722 | return; | |
723 | } | |
724 | ||
725 | static void defaultdebugcb(struct aim_session_t *sess, int level, const char *format, va_list va) | |
726 | { | |
727 | vfprintf(stderr, format, va); | |
728 | } | |
729 | ||
730 | /** | |
731 | * aim_session_init - Initializes a session structure | |
732 | * @sess: Session to initialize | |
733 | * @flags: Flags to use. Any of %AIM_SESS_FLAGS %OR'd together. | |
734 | * @debuglevel: Level of debugging output (zero is least) | |
735 | * | |
736 | * Sets up the initial values for a session. | |
737 | * | |
738 | */ | |
739 | faim_export void aim_session_init(struct aim_session_t *sess, unsigned long flags, int debuglevel) | |
740 | { | |
741 | if (!sess) | |
742 | return; | |
743 | ||
744 | memset(sess, 0, sizeof(struct aim_session_t)); | |
745 | aim_connrst(sess); | |
746 | sess->queue_outgoing = NULL; | |
747 | sess->queue_incoming = NULL; | |
748 | sess->pendingjoin = NULL; | |
749 | sess->pendingjoinexchange = 0; | |
750 | aim_initsnachash(sess); | |
751 | sess->msgcookies = NULL; | |
752 | sess->snac_nextid = 0x00000001; | |
753 | ||
754 | sess->flags = 0; | |
755 | sess->debug = 0; | |
756 | sess->debugcb = defaultdebugcb; | |
757 | ||
758 | sess->modlistv = NULL; | |
759 | ||
760 | /* | |
761 | * Default to SNAC login unless XORLOGIN is explicitly set. | |
762 | */ | |
763 | if (!(flags & AIM_SESS_FLAGS_XORLOGIN)) | |
764 | sess->flags |= AIM_SESS_FLAGS_SNACLOGIN; | |
765 | sess->flags |= flags; | |
766 | ||
767 | /* | |
768 | * This must always be set. Default to the queue-based | |
769 | * version for back-compatibility. | |
770 | */ | |
771 | aim_tx_setenqueue(sess, AIM_TX_QUEUED, NULL); | |
772 | ||
773 | ||
774 | /* | |
775 | * Register all the modules for this session... | |
776 | */ | |
777 | aim__registermodule(sess, misc_modfirst); /* load the catch-all first */ | |
778 | aim__registermodule(sess, buddylist_modfirst); | |
779 | aim__registermodule(sess, admin_modfirst); | |
780 | aim__registermodule(sess, bos_modfirst); | |
781 | aim__registermodule(sess, search_modfirst); | |
782 | aim__registermodule(sess, stats_modfirst); | |
783 | aim__registermodule(sess, auth_modfirst); | |
784 | aim__registermodule(sess, msg_modfirst); | |
785 | aim__registermodule(sess, chatnav_modfirst); | |
786 | aim__registermodule(sess, chat_modfirst); | |
787 | aim__registermodule(sess, locate_modfirst); | |
788 | aim__registermodule(sess, general_modfirst); | |
789 | ||
790 | return; | |
791 | } | |
792 | ||
793 | /** | |
794 | * aim_session_kill - Deallocate a session | |
795 | * @sess: Session to kill | |
796 | * | |
797 | * | |
798 | */ | |
799 | faim_export void aim_session_kill(struct aim_session_t *sess) | |
800 | { | |
801 | ||
802 | aim_logoff(sess); | |
803 | ||
804 | aim__shutdownmodules(sess); | |
805 | ||
806 | return; | |
807 | } | |
808 | ||
809 | /** | |
810 | * aim_setdebuggingcb - Set the function to call when outputting debugging info | |
811 | * @sess: Session to change | |
812 | * @cb: Function to call | |
813 | * | |
814 | * The function specified is called whenever faimdprintf() is used within | |
815 | * libfaim, and the session's debugging level is greater tha nor equal to | |
816 | * the value faimdprintf was called with. | |
817 | * | |
818 | */ | |
819 | faim_export int aim_setdebuggingcb(struct aim_session_t *sess, faim_debugging_callback_t cb) | |
820 | { | |
821 | ||
822 | if (!sess) | |
823 | return -1; | |
824 | ||
825 | sess->debugcb = cb; | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | /** | |
831 | * aim_conn_isconnecting - Determine if a connection is connecting | |
832 | * @conn: Connection to examine | |
833 | * | |
834 | * Returns nonzero if the connection is in the process of | |
835 | * connecting (or if it just completed and aim_conn_completeconnect() | |
836 | * has yet to be called on it). | |
837 | * | |
838 | */ | |
839 | faim_export int aim_conn_isconnecting(struct aim_conn_t *conn) | |
840 | { | |
841 | if (!conn) | |
842 | return 0; | |
843 | return (conn->status & AIM_CONN_STATUS_INPROGRESS)?1:0; | |
844 | } | |
845 | ||
846 | faim_export int aim_conn_completeconnect(struct aim_session_t *sess, struct aim_conn_t *conn) | |
847 | { | |
848 | fd_set fds, wfds; | |
849 | struct timeval tv; | |
850 | int res, error = ETIMEDOUT; | |
851 | rxcallback_t userfunc; | |
852 | ||
853 | if (!conn || (conn->fd == -1)) | |
854 | return -1; | |
855 | ||
856 | if (!(conn->status & AIM_CONN_STATUS_INPROGRESS)) | |
857 | return -1; | |
858 | ||
859 | FD_ZERO(&fds); | |
860 | FD_SET(conn->fd, &fds); | |
861 | FD_ZERO(&wfds); | |
862 | FD_SET(conn->fd, &wfds); | |
863 | tv.tv_sec = 0; | |
864 | tv.tv_usec = 0; | |
865 | ||
866 | if ((res = select(conn->fd+1, &fds, &wfds, NULL, &tv)) == -1) { | |
867 | error = errno; | |
868 | aim_conn_close(conn); | |
869 | errno = error; | |
870 | return -1; | |
871 | } else if (res == 0) { | |
872 | faimdprintf(sess, 0, "aim_conn_completeconnect: false alarm on %d\n", conn->fd); | |
873 | return 0; /* hasn't really completed yet... */ | |
874 | } | |
875 | ||
876 | if (FD_ISSET(conn->fd, &fds) || FD_ISSET(conn->fd, &wfds)) { | |
877 | int len = sizeof(error); | |
878 | ||
879 | if (getsockopt(conn->fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) | |
880 | error = errno; | |
881 | } | |
882 | ||
883 | if (error) { | |
884 | aim_conn_close(conn); | |
885 | errno = error; | |
886 | return -1; | |
887 | } | |
888 | ||
889 | fcntl(conn->fd, F_SETFL, 0); /* XXX should restore original flags */ | |
890 | ||
891 | conn->status &= ~AIM_CONN_STATUS_INPROGRESS; | |
892 | ||
893 | if ((userfunc = aim_callhandler(sess, conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNCOMPLETE))) | |
894 | userfunc(sess, NULL, conn); | |
895 | ||
896 | /* Flush out the queues if there was something waiting for this conn */ | |
897 | aim_tx_flushqueue(sess); | |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
902 | /* | |
903 | * aim_logoff() | |
904 | * | |
905 | * Closes -ALL- open connections. | |
906 | * | |
907 | */ | |
908 | faim_export int aim_logoff(struct aim_session_t *sess) | |
909 | { | |
910 | ||
911 | aim_connrst(sess); /* in case we want to connect again */ | |
912 | ||
913 | return 0; | |
914 | ||
915 | } | |
916 |