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