Mercurial > pidgin3 / file comparison

comparison: libfaim/im.c

libfaim/im.c

changeset 1649
f1e75c7ad28c
parent 1535
b118fbab0556
child 1746
ee5112669395
equal deleted inserted replaced
1648:f33239360f10 1649:f1e75c7ad28c
183 aim_cleansnacs(sess, 60); /* clean out all SNACs over 60sec old */ 183 aim_cleansnacs(sess, 60); /* clean out all SNACs over 60sec old */
184 184
185 return sess->snac_nextid; 185 return sess->snac_nextid;
186 } 186 }
187 187
188 faim_internal int aim_parse_outgoing_im_middle(struct aim_session_t *sess, 188 static int outgoingim(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
189 struct command_rx_struct *command) 189 {
190 { 190 unsigned int i, ret = 0;
191 unsigned int i = 0, z; 191 rxcallback_t userfunc;
192 rxcallback_t userfunc = NULL;
193 unsigned char cookie[8]; 192 unsigned char cookie[8];
194 int channel; 193 int channel;
195 struct aim_tlvlist_t *tlvlist; 194 struct aim_tlvlist_t *tlvlist;
196 char sn[MAXSNLEN]; 195 char sn[MAXSNLEN];
197 unsigned short icbmflags = 0; 196 unsigned short icbmflags = 0;
198 unsigned char flag1 = 0, flag2 = 0; 197 unsigned char flag1 = 0, flag2 = 0;
199 unsigned char *msgblock = NULL, *msg = NULL; 198 unsigned char *msgblock = NULL, *msg = NULL;
200 199
201 i = 10;
202
203 /* ICBM Cookie. */ 200 /* ICBM Cookie. */
204 for (z=0; z<8; z++,i++) 201 for (i = 0; i < 8; i++)
205 cookie[z] = command->data[i]; 202 cookie[i] = aimutil_get8(data+i);
206 203
207 /* Channel ID */ 204 /* Channel ID */
208 channel = aimutil_get16(command->data+i); 205 channel = aimutil_get16(data+i);
209 i += 2; 206 i += 2;
210 207
211 if (channel != 0x01) { 208 if (channel != 0x01) {
212 faimdprintf(sess, 0, "icbm: ICBM recieved on unsupported channel. Ignoring. (chan = %04x)\n", channel); 209 faimdprintf(sess, 0, "icbm: ICBM recieved on unsupported channel. Ignoring. (chan = %04x)\n", channel);
213 return 1; 210 return 1;
214 } 211 }
215 212
216 strncpy(sn, (char *) command->data+i+1, (int) *(command->data+i)); 213 strncpy(sn, (char *) data+i+1, (int) *(data+i));
217 i += 1 + (int) *(command->data+i); 214 i += 1 + (int) *(data+i);
218 215
219 tlvlist = aim_readtlvchain(command->data+i, command->commandlen-i); 216 tlvlist = aim_readtlvchain(data+i, datalen-i);
220 217
221 if (aim_gettlv(tlvlist, 0x0003, 1)) 218 if (aim_gettlv(tlvlist, 0x0003, 1))
222 icbmflags |= AIM_IMFLAGS_ACK; 219 icbmflags |= AIM_IMFLAGS_ACK;
223 if (aim_gettlv(tlvlist, 0x0004, 1)) 220 if (aim_gettlv(tlvlist, 0x0004, 1))
224 icbmflags |= AIM_IMFLAGS_AWAY; 221 icbmflags |= AIM_IMFLAGS_AWAY;
241 j += 2; 238 j += 2;
242 239
243 msg = msgblock+j; 240 msg = msgblock+j;
244 } 241 }
245 242
246 if ((userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0006)) || (i = 0)) 243 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
247 i = userfunc(sess, command, channel, sn, msg, icbmflags, flag1, flag2); 244 ret = userfunc(sess, rx, channel, sn, msg, icbmflags, flag1, flag2);
248 245
249 if (msgblock) 246 if (msgblock)
250 free(msgblock); 247 free(msgblock);
251 aim_freetlvchain(&tlvlist); 248 aim_freetlvchain(&tlvlist);
252 249
253 return 0; 250 return ret;
251 }
252
253 static int incomingim_ch1(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned short channel, struct aim_userinfo_s *userinfo, struct aim_tlvlist_t *tlvlist, unsigned char *cookie)
254 {
255 rxcallback_t userfunc;
256 int i, j = 0, y = 0, z = 0, ret = 0;
257 char *msg = NULL;
258 unsigned long icbmflags = 0;
259 struct aim_tlv_t *msgblocktlv;
260 unsigned char *msgblock;
261 unsigned short flag1, flag2;
262 int finlen = 0;
263 unsigned char fingerprint[10];
264 unsigned short wastebits;
265
266 /*
267 * Check Autoresponse status. If it is an autoresponse,
268 * it will contain a type 0x0004 TLV, with zero length.
269 */
270 if (aim_gettlv(tlvlist, 0x0004, 1))
271 icbmflags |= AIM_IMFLAGS_AWAY;
272
273 /*
274 * Check Ack Request status.
275 */
276 if (aim_gettlv(tlvlist, 0x0003, 1))
277 icbmflags |= AIM_IMFLAGS_ACK;
278
279 /*
280 * Message block.
281 */
282 msgblocktlv = aim_gettlv(tlvlist, 0x0002, 1);
283 if (!msgblocktlv || !(msgblock = msgblocktlv->value)) {
284 faimdprintf(sess, 0, "icbm: major error! no message block TLV found!\n");
285 return 0;
286 }
287
288 /*
289 * Extracting the message from the unknown cruft.
290 *
291 * This is a bit messy, and I'm not really qualified,
292 * even as the author, to comment on it. At least
293 * its not as bad as a while loop shooting into infinity.
294 *
295 * "Do you believe in magic?"
296 *
297 */
298
299 wastebits = aimutil_get8(msgblock+j++);
300 wastebits = aimutil_get8(msgblock+j++);
301
302 y = aimutil_get16(msgblock+j);
303 j += 2;
304 for (z = 0; z < y; z++)
305 wastebits = aimutil_get8(msgblock+j++);
306 wastebits = aimutil_get8(msgblock+j++);
307 wastebits = aimutil_get8(msgblock+j++);
308
309 finlen = j;
310 if (finlen > sizeof(fingerprint))
311 finlen = sizeof(fingerprint);
312 memcpy(fingerprint, msgblocktlv->value, finlen);
313
314 /*
315 * Message string length, including flag words.
316 */
317 i = aimutil_get16(msgblock+j);
318 j += 2;
319
320 /*
321 * Flag words.
322 *
323 * Its rumored that these can kick in some funky
324 * 16bit-wide char stuff that used to really kill
325 * libfaim. Hopefully the latter is no longer true.
326 *
327 * Though someone should investiagte the former.
328 *
329 */
330 flag1 = aimutil_get16(msgblock+j);
331 j += 2;
332 flag2 = aimutil_get16(msgblock+j);
333 j += 2;
334
335 if (flag1 || flag2)
336 faimdprintf(sess, 0, "icbm: **warning: encoding flags are being used! {%04x, %04x}\n", flag1, flag2);
337
338 /*
339 * Message string.
340 */
341 i -= 4;
342 msg = (char *)malloc(i+1);
343 memcpy(msg, msgblock+j, i);
344 msg[i] = '\0';
345
346 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
347 ret = userfunc(sess, rx, channel, userinfo, msg, icbmflags, flag1, flag2, finlen, fingerprint);
348
349 free(msg);
350
351 return ret;
352 }
353
354 static int incomingim_ch2(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned short channel, struct aim_userinfo_s *userinfo, struct aim_tlvlist_t *tlvlist, unsigned char *cookie)
355 {
356 rxcallback_t userfunc;
357 struct aim_tlv_t *block1;
358 struct aim_tlvlist_t *list2;
359 unsigned short reqclass = 0;
360 unsigned short status = 0;
361 int ret = 0;
362
363 /*
364 * There's another block of TLVs embedded in the type 5 here.
365 */
366 block1 = aim_gettlv(tlvlist, 0x0005, 1);
367 if (!block1 || !block1->value) {
368 faimdprintf(sess, 0, "no tlv 0x0005 in rendezvous transaction!\n");
369 return 0;
370 }
371
372 /*
373 * First two bytes represent the status of the connection.
374 *
375 * 0 is a request, 2 is an accept
376 */
377 status = aimutil_get16(block1->value+0);
378
379 /*
380 * Next comes the cookie. Should match the ICBM cookie.
381 */
382 if (memcmp(block1->value+2, cookie, 8) != 0)
383 faimdprintf(sess, 0, "rend: warning cookies don't match!\n");
384
385 /*
386 * The next 16bytes are a capability block so we can
387 * identify what type of rendezvous this is.
388 *
389 * Thanks to Eric Warmenhoven <warmenhoven@linux.com> (of GAIM)
390 * for pointing some of this out to me. In fact, a lot of
391 * the client-to-client info comes from the work of the GAIM
392 * developers. Thanks!
393 *
394 * Read off one capability string and we should have it ID'd.
395 *
396 */
397 reqclass = aim_getcap(sess, block1->value+2+8, 0x10);
398 if (reqclass == 0x0000) {
399 faimdprintf(sess, 0, "rend: no ID block\n");
400 return 0;
401 }
402
403 /*
404 * What follows may be TLVs or nothing, depending on the
405 * purpose of the message.
406 *
407 * Ack packets for instance have nothing more to them.
408 */
409 list2 = aim_readtlvchain(block1->value+2+8+16, block1->length-2-8-16);
410
411 if (!list2 || ((reqclass != AIM_CAPS_IMIMAGE) && !(aim_gettlv(list2, 0x2711, 1)))) {
412 struct aim_msgcookie_t *cook;
413 int type;
414
415 type = aim_msgcookie_gettype(reqclass); /* XXX: fix this shitty code */
416
417 if ((cook = aim_checkcookie(sess, cookie, type)) == NULL) {
418 faimdprintf(sess, 0, "non-data rendezvous thats not in cache %d/%s!\n", type, cookie);
419 aim_freetlvchain(&list2);
420 return 0;
421 }
422
423 if (cook->type == AIM_COOKIETYPE_OFTGET) {
424 struct aim_filetransfer_priv *ft;
425
426 if (cook->data) {
427 int errorcode = -1; /* XXX shouldnt this be 0? */
428
429 ft = (struct aim_filetransfer_priv *)cook->data;
430
431 if(status != 0x0002) {
432 if (aim_gettlv(list2, 0x000b, 1))
433 errorcode = aim_gettlv16(list2, 0x000b, 1);
434
435 /* XXX this should make it up to the client, you know.. */
436 if (errorcode)
437 faimdprintf(sess, 0, "transfer from %s (%s) for %s cancelled (error code %d)\n", ft->sn, ft->ip, ft->fh.name, errorcode);
438 }
439 } else {
440 faimdprintf(sess, 0, "no data attached to file transfer\n");
441 }
442 } else if (cook->type == AIM_CAPS_VOICE) {
443 faimdprintf(sess, 0, "voice request cancelled\n");
444 } else {
445 faimdprintf(sess, 0, "unknown cookie cache type %d\n", cook->type);
446 }
447
448 aim_freetlvchain(&list2);
449
450 return 1;
451 }
452
453 /*
454 * The rest of the handling depends on what type it is.
455 */
456 if (reqclass & AIM_CAPS_BUDDYICON) {
457
458 /* XXX implement this (its in ActiveBuddy...) */
459 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
460 ret = userfunc(sess, rx, channel, reqclass, userinfo);
461
462 } else if (reqclass & AIM_CAPS_VOICE) {
463 struct aim_msgcookie_t *cachedcook;
464
465 faimdprintf(sess, 0, "rend: voice!\n");
466
467 if(!(cachedcook = (struct aim_msgcookie_t*)calloc(1, sizeof(struct aim_msgcookie_t)))) {
468 aim_freetlvchain(&list2);
469 return 0;
470 }
471
472 memcpy(cachedcook->cookie, cookie, 8);
473 cachedcook->type = AIM_COOKIETYPE_OFTVOICE;
474 cachedcook->data = NULL;
475
476 if (aim_cachecookie(sess, cachedcook) == -1)
477 faimdprintf(sess, 0, "ERROR caching message cookie\n");
478
479 /* XXX: implement all this */
480
481 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
482 ret = userfunc(sess, rx, channel, reqclass, &userinfo);
483
484 } else if ((reqclass & AIM_CAPS_IMIMAGE) ||
485 (reqclass & AIM_CAPS_BUDDYICON)) {
486 char ip[30];
487 struct aim_directim_priv *priv;
488
489 memset(ip, 0, sizeof(ip));
490
491 if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0005, 1)) {
492 struct aim_tlv_t *iptlv, *porttlv;
493
494 iptlv = aim_gettlv(list2, 0x0003, 1);
495 porttlv = aim_gettlv(list2, 0x0005, 1);
496
497 snprintf(ip, 30, "%d.%d.%d.%d:%d",
498 aimutil_get8(iptlv->value+0),
499 aimutil_get8(iptlv->value+1),
500 aimutil_get8(iptlv->value+2),
501 aimutil_get8(iptlv->value+3),
502 4443 /*aimutil_get16(porttlv->value)*/);
503 }
504
505 faimdprintf(sess, 0, "rend: directIM request from %s (%s)\n",
506 userinfo->sn, ip);
507
508 /*
509 * XXX: there are a couple of different request packets for
510 * different things
511 */
512
513 priv = (struct aim_directim_priv *)calloc(1, sizeof(struct aim_directim_priv));
514 memcpy(priv->ip, ip, sizeof(priv->ip));
515 memcpy(priv->sn, userinfo->sn, sizeof(priv->sn));
516 memcpy(priv->cookie, cookie, sizeof(priv->cookie));
517
518 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
519 ret = userfunc(sess, rx, channel, reqclass, userinfo, priv);
520
521 } else if (reqclass & AIM_CAPS_CHAT) {
522 struct aim_tlv_t *miscinfo;
523 struct aim_chat_roominfo roominfo;
524 char *msg=NULL,*encoding=NULL,*lang=NULL;
525
526 miscinfo = aim_gettlv(list2, 0x2711, 1);
527 aim_chat_readroominfo(miscinfo->value, &roominfo);
528
529 if (aim_gettlv(list2, 0x000c, 1))
530 msg = aim_gettlv_str(list2, 0x000c, 1);
531
532 if (aim_gettlv(list2, 0x000d, 1))
533 encoding = aim_gettlv_str(list2, 0x000d, 1);
534
535 if (aim_gettlv(list2, 0x000e, 1))
536 lang = aim_gettlv_str(list2, 0x000e, 1);
537
538 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
539 ret = userfunc(sess, rx, channel, reqclass, userinfo, &roominfo, msg, encoding?encoding+1:NULL, lang?lang+1:NULL);
540
541 free(roominfo.name);
542 free(msg);
543 free(encoding);
544 free(lang);
545
546 } else if (reqclass & AIM_CAPS_GETFILE) {
547 char ip[30];
548 struct aim_msgcookie_t *cachedcook;
549 struct aim_tlv_t *miscinfo;
550 struct aim_tlv_t *iptlv, *porttlv;
551
552 memset(ip, 0, 30);
553
554 if (!(cachedcook = calloc(1, sizeof(struct aim_msgcookie_t)))) {
555 aim_freetlvchain(&list2);
556 return 0;
557 }
558
559 if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)) ||
560 !(iptlv = aim_gettlv(list2, 0x0003, 1)) ||
561 !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
562 faimdprintf(sess, 0, "rend: badly damaged file get request from %s...\n", userinfo->sn);
563 aim_cookie_free(sess, cachedcook);
564 aim_freetlvchain(&list2);
565 return 0;
566 }
567
568 snprintf(ip, 30, "%d.%d.%d.%d:%d",
569 aimutil_get8(iptlv->value+0),
570 aimutil_get8(iptlv->value+1),
571 aimutil_get8(iptlv->value+2),
572 aimutil_get8(iptlv->value+3),
573 aimutil_get16(porttlv->value));
574
575 faimdprintf(sess, 0, "rend: file get request from %s (%s)\n", userinfo->sn, ip);
576 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
577 ret = userfunc(sess, rx, channel, reqclass, userinfo, ip, cookie);
578
579 } else if (reqclass & AIM_CAPS_SENDFILE) {
580 #if 0
581 char ip[30];
582 struct aim_msgcookie_t *cachedcook;
583 struct aim_tlv_t *miscinfo;
584 struct aim_tlv_t *iptlv, *porttlv;
585
586 memset(ip, 0, 30);
587
588 if (!(cachedcook = calloc(1, sizeof(struct aim_msgcookie_t)))) {
589 aim_freetlvchain(&list2);
590 return 0;
591 }
592
593 if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)) ||
594 !(iptlv = aim_gettlv(list2, 0x0003, 1)) ||
595 !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
596 faimdprintf(sess, 0, "rend: badly damaged file get request from %s...\n", userinfo->sn);
597 aim_cookie_free(sess, cachedcook);
598 aim_freetlvchain(&list2);
599 return 0;
600 }
601
602 snprintf(ip, 30, "%d.%d.%d.%d:%d",
603 aimutil_get8(iptlv->value+0),
604 aimutil_get8(iptlv->value+1),
605 aimutil_get8(iptlv->value+2),
606 aimutil_get8(iptlv->value+3),
607 aimutil_get16(porttlv->value));
608
609 if (aim_gettlv(list2, 0x000c, 1))
610 desc = aim_gettlv_str(list2, 0x000c, 1);
611
612 faimdprintf(sess, 0, "rend: file transfer request from %s for %s: %s (%s)\n",
613 userinfo->sn, miscinfo->value+8,
614 desc, ip);
615
616 memcpy(cachedcook->cookie, cookie, 8);
617
618 ft = malloc(sizeof(struct aim_filetransfer_priv));
619 strncpy(ft->sn, userinfo.sn, sizeof(ft->sn));
620 strncpy(ft->ip, ip, sizeof(ft->ip));
621 strncpy(ft->fh.name, miscinfo->value+8, sizeof(ft->fh.name));
622 cachedcook->type = AIM_COOKIETYPE_OFTSEND;
623 cachedcook->data = ft;
624
625 if (aim_cachecookie(sess, cachedcook) == -1)
626 faimdprintf(sess, 0, "ERROR caching message cookie\n");
627
628 aim_accepttransfer(sess, rx->conn, ft->sn, cookie, AIM_CAPS_SENDFILE);
629
630 if (desc)
631 free(desc);
632
633 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
634 ret = userfunc(sess, rx, channel, reqclass, userinfo);
635
636 #endif
637 } else
638 faimdprintf(sess, 0, "rend: unknown rendezvous 0x%04x\n", reqclass);
639
640 aim_freetlvchain(&list2);
641
642 return ret;
254 } 643 }
255 644
256 /* 645 /*
257 * It can easily be said that parsing ICBMs is THE single 646 * It can easily be said that parsing ICBMs is THE single
258 * most difficult thing to do in the in AIM protocol. In 647 * most difficult thing to do in the in AIM protocol. In
261 * Below is the best damned solution I've come up with 650 * Below is the best damned solution I've come up with
262 * over the past sixteen months of battling with it. This 651 * over the past sixteen months of battling with it. This
263 * can parse both away and normal messages from every client 652 * can parse both away and normal messages from every client
264 * I have access to. Its not fast, its not clean. But it works. 653 * I have access to. Its not fast, its not clean. But it works.
265 * 654 *
266 * We should also support at least minimal parsing of
267 * Channel 2, so that we can at least know the name of the
268 * room we're invited to, but obviously can't attend...
269 *
270 */ 655 */
271 faim_internal int aim_parse_incoming_im_middle(struct aim_session_t *sess, 656 static int incomingim(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
272 struct command_rx_struct *command) 657 {
273 { 658 int i, ret = 0;
274 u_int i = 0,z; 659 unsigned char cookie[8];
275 rxcallback_t userfunc = NULL;
276 u_char cookie[8];
277 int channel; 660 int channel;
278 struct aim_tlvlist_t *tlvlist; 661 struct aim_tlvlist_t *tlvlist;
279 struct aim_userinfo_s userinfo; 662 struct aim_userinfo_s userinfo;
280 663
281 memset(&userinfo, 0x00, sizeof(struct aim_userinfo_s)); 664 memset(&userinfo, 0x00, sizeof(struct aim_userinfo_s));
282 665
283 i = 10; /* Skip SNAC header */
284
285 /* 666 /*
286 * Read ICBM Cookie. And throw away. 667 * Read ICBM Cookie. And throw away.
287 */ 668 */
288 for (z=0; z<8; z++,i++) 669 for (i = 0; i < 8; i++)
289 cookie[z] = command->data[i]; 670 cookie[i] = aimutil_get8(data+i);
290 671
291 /* 672 /*
292 * Channel ID. 673 * Channel ID.
293 * 674 *
294 * Channel 0x0001 is the message channel. There are 675 * Channel 0x0001 is the message channel. There are
299 * Channel 0x0002 is the Rendevous channel, which 680 * Channel 0x0002 is the Rendevous channel, which
300 * is where Chat Invitiations and various client-client 681 * is where Chat Invitiations and various client-client
301 * connection negotiations come from. 682 * connection negotiations come from.
302 * 683 *
303 */ 684 */
304 channel = aimutil_get16(command->data+i); 685 channel = aimutil_get16(data+i);
305 i += 2; 686 i += 2;
306 687
307 /* 688 /*
308 * 689 *
309 */ 690 */
326 * That also means that TLV types can be duplicated between the 707 * That also means that TLV types can be duplicated between the
327 * userinfo block and the rest of the message, however there should 708 * userinfo block and the rest of the message, however there should
328 * never be two TLVs of the same type in one block. 709 * never be two TLVs of the same type in one block.
329 * 710 *
330 */ 711 */
331 i += aim_extractuserinfo(sess, command->data+i, &userinfo); 712 i += aim_extractuserinfo(sess, data+i, &userinfo);
332 713
333 /* 714 /*
334 * Read block of TLVs (not including the userinfo data). All 715 * Read block of TLVs (not including the userinfo data). All
335 * further data is derived from what is parsed here. 716 * further data is derived from what is parsed here.
336 */ 717 */
337 tlvlist = aim_readtlvchain(command->data+i, command->commandlen-i); 718 tlvlist = aim_readtlvchain(data+i, datalen-i);
338 719
339 /* 720 /*
340 * From here on, its depends on what channel we're on. 721 * From here on, its depends on what channel we're on.
341 */ 722 */
342 if (channel == 1) 723 if (channel == 1)
343 { 724 ret = incomingim_ch1(sess, mod, rx, snac, channel, &userinfo, tlvlist, cookie);
344 u_int j = 0, y = 0, z = 0;
345 char *msg = NULL;
346 u_int icbmflags = 0;
347 struct aim_tlv_t *msgblocktlv;
348 u_char *msgblock;
349 u_short flag1,flag2;
350 int finlen = 0;
351 unsigned char fingerprint[10];
352 u_short wastebits;
353
354 /*
355 * Check Autoresponse status. If it is an autoresponse,
356 * it will contain a type 0x0004 TLV, with zero length.
357 */
358 if (aim_gettlv(tlvlist, 0x0004, 1))
359 icbmflags |= AIM_IMFLAGS_AWAY;
360
361 /*
362 * Check Ack Request status.
363 */
364 if (aim_gettlv(tlvlist, 0x0003, 1))
365 icbmflags |= AIM_IMFLAGS_ACK;
366
367 /*
368 * Message block.
369 */
370 msgblocktlv = aim_gettlv(tlvlist, 0x0002, 1);
371 if (!msgblocktlv || !msgblocktlv->value) {
372 faimdprintf(sess, 0, "icbm: major error! no message block TLV found!\n");
373 aim_freetlvchain(&tlvlist);
374 return 1;
375 }
376
377 /*
378 * Extracting the message from the unknown cruft.
379 *
380 * This is a bit messy, and I'm not really qualified,
381 * even as the author, to comment on it. At least
382 * its not as bad as a while loop shooting into infinity.
383 *
384 * "Do you believe in magic?"
385 *
386 */
387 msgblock = msgblocktlv->value;
388 j = 0;
389
390 wastebits = aimutil_get8(msgblock+j++);
391 wastebits = aimutil_get8(msgblock+j++);
392
393 y = aimutil_get16(msgblock+j);
394 j += 2;
395 for (z = 0; z < y; z++)
396 wastebits = aimutil_get8(msgblock+j++);
397 wastebits = aimutil_get8(msgblock+j++);
398 wastebits = aimutil_get8(msgblock+j++);
399
400 finlen = j;
401 if (finlen > sizeof(fingerprint))
402 finlen = sizeof(fingerprint);
403 memcpy(fingerprint, msgblocktlv->value, finlen);
404
405 /*
406 * Message string length, including flag words.
407 */
408 i = aimutil_get16(msgblock+j);
409 j += 2;
410
411 /*
412 * Flag words.
413 *
414 * Its rumored that these can kick in some funky
415 * 16bit-wide char stuff that used to really kill
416 * libfaim. Hopefully the latter is no longer true.
417 *
418 * Though someone should investiagte the former.
419 *
420 */
421 flag1 = aimutil_get16(msgblock+j);
422 j += 2;
423 flag2 = aimutil_get16(msgblock+j);
424 j += 2;
425
426 if (flag1 || flag2)
427 faimdprintf(sess, 0, "icbm: **warning: encoding flags are being used! {%04x, %04x}\n", flag1, flag2);
428
429 /*
430 * Message string.
431 */
432 i -= 4;
433 msg = (char *)malloc(i+1);
434 memcpy(msg, msgblock+j, i);
435 msg[i] = '\0';
436
437 /*
438 * Call client.
439 */
440 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
441 if (userfunc)
442 i = userfunc(sess, command, channel, &userinfo, msg, icbmflags, flag1, flag2, finlen, fingerprint);
443 else
444 i = 0;
445
446 free(msg);
447 }
448 else if (channel == 0x0002) 725 else if (channel == 0x0002)
449 { 726 ret = incomingim_ch2(sess, mod, rx, snac, channel, &userinfo, tlvlist, cookie);
450 struct aim_tlv_t *block1;
451 struct aim_tlvlist_t *list2;
452 unsigned short reqclass = 0;
453 unsigned short status = 0;
454
455 /*
456 * There's another block of TLVs embedded in the type 5 here.
457 */
458 block1 = aim_gettlv(tlvlist, 0x0005, 1);
459 if (!block1) {
460 faimdprintf(sess, 0, "no tlv 0x0005 in rendezvous transaction!\n");
461 aim_freetlvchain(&tlvlist);
462 return 1; /* major problem */
463 }
464
465 /*
466 * First two bytes represent the status of the connection.
467 *
468 * 0 is a request, 2 is an accept
469 */
470 status = aimutil_get16(block1->value+0);
471
472 /*
473 * Next comes the cookie. Should match the ICBM cookie.
474 */
475 if (memcmp(block1->value+2, cookie, 8) != 0)
476 faimdprintf(sess, 0, "rend: warning cookies don't match!\n");
477
478 /*
479 * The next 16bytes are a capability block so we can
480 * identify what type of rendezvous this is.
481 *
482 * Thanks to Eric Warmenhoven <warmenhoven@linux.com> (of GAIM)
483 * for pointing some of this out to me. In fact, a lot of
484 * the client-to-client info comes from the work of the GAIM
485 * developers. Thanks!
486 *
487 * Read off one capability string and we should have it ID'd.
488 *
489 */
490 reqclass = aim_getcap(sess, block1->value+2+8, 0x10);
491 if (reqclass == 0x0000) {
492 faimdprintf(sess, 0, "rend: no ID block\n");
493 aim_freetlvchain(&tlvlist);
494 return 1;
495 }
496
497 /*
498 * What follows may be TLVs or nothing, depending on the
499 * purpose of the message.
500 *
501 * Ack packets for instance have nothing more to them.
502 */
503 list2 = aim_readtlvchain(block1->value+2+8+16, block1->length-2-8-16);
504
505 if (!list2 || ((reqclass != AIM_CAPS_IMIMAGE) && !(aim_gettlv(list2, 0x2711, 1)))) {
506 struct aim_msgcookie_t *cook;
507 int type;
508
509 type = aim_msgcookie_gettype(reqclass); /* XXX: fix this shitty code */
510
511 if ((cook = aim_checkcookie(sess, cookie, type)) == NULL) {
512 faimdprintf(sess, 0, "non-data rendezvous thats not in cache %d/%s!\n", type, cookie);
513 aim_freetlvchain(&list2);
514 aim_freetlvchain(&tlvlist);
515 return 1;
516 }
517
518 if (cook->type == AIM_COOKIETYPE_OFTGET) {
519 struct aim_filetransfer_priv *ft;
520
521 if (cook->data) {
522 int errorcode = -1; /* XXX shouldnt this be 0? */
523
524 ft = (struct aim_filetransfer_priv *)cook->data;
525
526 if(status != 0x0002) {
527 if (aim_gettlv(list2, 0x000b, 1))
528 errorcode = aim_gettlv16(list2, 0x000b, 1);
529
530 if (errorcode)
531 faimdprintf(sess, 0, "transfer from %s (%s) for %s cancelled (error code %d)\n", ft->sn, ft->ip, ft->fh.name, errorcode);
532 }
533 } else {
534 faimdprintf(sess, 0, "no data attached to file transfer\n");
535 }
536 } else if (cook->type == AIM_CAPS_VOICE) {
537 faimdprintf(sess, 0, "voice request cancelled\n");
538 } else {
539 faimdprintf(sess, 0, "unknown cookie cache type %d\n", cook->type);
540 }
541
542 if (list2)
543 aim_freetlvchain(&list2);
544 aim_freetlvchain(&tlvlist);
545 return 1;
546 }
547
548 /*
549 * The rest of the handling depends on what type it is.
550 */
551 if (reqclass & AIM_CAPS_BUDDYICON) {
552
553 /*
554 * Call client.
555 */
556 #if 0
557 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
558 if (userfunc || (i = 0))
559 i = userfunc(sess,
560 command,
561 channel,
562 reqclass,
563 &userinfo,
564 ip,
565 cookie);
566 #endif
567
568 } else if (reqclass & AIM_CAPS_VOICE) {
569 struct aim_msgcookie_t *cachedcook;
570
571 faimdprintf(sess, 0, "rend: voice!\n");
572
573 if(!(cachedcook = (struct aim_msgcookie_t*)calloc(1, sizeof(struct aim_msgcookie_t))))
574 return 1;
575
576 memcpy(cachedcook->cookie, cookie, 8);
577 cachedcook->type = AIM_COOKIETYPE_OFTVOICE;
578 cachedcook->data = NULL;
579
580 if (aim_cachecookie(sess, cachedcook) == -1)
581 faimdprintf(sess, 0, "ERROR caching message cookie\n");
582
583 /* XXX: implement all this */
584
585 /*
586 * Call client.
587 */
588 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
589 if (userfunc || (i = 0)) {
590 i = userfunc(sess, command, channel, reqclass, &userinfo);
591 }
592 } else if ((reqclass & AIM_CAPS_IMIMAGE) || (reqclass & AIM_CAPS_BUDDYICON)) {
593 char ip[30];
594 struct aim_directim_priv *priv;
595
596 memset(ip, 0, 30);
597
598 if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0005, 1)) {
599 struct aim_tlv_t *iptlv, *porttlv;
600
601 iptlv = aim_gettlv(list2, 0x0003, 1);
602 porttlv = aim_gettlv(list2, 0x0005, 1);
603
604 snprintf(ip, 30, "%d.%d.%d.%d:%d",
605 aimutil_get8(iptlv->value+0),
606 aimutil_get8(iptlv->value+1),
607 aimutil_get8(iptlv->value+2),
608 aimutil_get8(iptlv->value+3),
609 4443 /*aimutil_get16(porttlv->value)*/);
610 }
611
612 faimdprintf(sess, 0, "rend: directIM request from %s (%s)\n",
613 userinfo.sn, ip);
614
615 /* XXX: there are a couple of different request packets for
616 * different things */
617
618 priv = (struct aim_directim_priv *)calloc(1, sizeof(struct aim_directim_priv));
619 memcpy(priv->ip, ip, sizeof(priv->ip));
620 memcpy(priv->sn, userinfo.sn, sizeof(priv->sn));
621 memcpy(priv->cookie, cookie, sizeof(priv->cookie));
622
623 /*
624 * Call client.
625 */
626 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
627 if (userfunc || (i = 0))
628 i = userfunc(sess,
629 command,
630 channel,
631 reqclass,
632 &userinfo, priv);
633
634 } else if (reqclass & AIM_CAPS_CHAT) {
635 struct aim_tlv_t *miscinfo;
636 struct aim_chat_roominfo roominfo;
637 char *msg=NULL,*encoding=NULL,*lang=NULL;
638
639 miscinfo = aim_gettlv(list2, 0x2711, 1);
640 aim_chat_readroominfo(miscinfo->value, &roominfo);
641
642 if (aim_gettlv(list2, 0x000c, 1))
643 msg = aim_gettlv_str(list2, 0x000c, 1);
644
645 if (aim_gettlv(list2, 0x000d, 1))
646 encoding = aim_gettlv_str(list2, 0x000d, 1);
647
648 if (aim_gettlv(list2, 0x000e, 1))
649 lang = aim_gettlv_str(list2, 0x000e, 1);
650
651 /*
652 * Call client.
653 */
654 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
655 if (userfunc || (i = 0))
656 i = userfunc(sess,
657 command,
658 channel,
659 reqclass,
660 &userinfo,
661 &roominfo,
662 msg,
663 encoding?encoding+1:NULL,
664 lang?lang+1:NULL);
665 free(roominfo.name);
666 free(msg);
667 free(encoding);
668 free(lang);
669 } else if (reqclass & AIM_CAPS_GETFILE) {
670 char ip[30];
671 struct aim_msgcookie_t *cachedcook;
672 struct aim_tlv_t *miscinfo;
673
674 if (!(cachedcook = calloc(1, sizeof(struct aim_msgcookie_t))))
675 return 0;
676
677 memset(ip, 0, 30);
678
679 if (!(miscinfo = aim_gettlv(list2, 0x2711, 1))) {
680 aim_cookie_free(sess, cachedcook);
681 return 0;
682 }
683
684 if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0005, 1)) {
685 struct aim_tlv_t *iptlv, *porttlv;
686
687 if (!(iptlv = aim_gettlv(list2, 0x0003, 1)) || !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
688 aim_cookie_free(sess, cachedcook);
689 return 0;
690 }
691
692 snprintf(ip, 30, "%d.%d.%d.%d:%d",
693 aimutil_get8(iptlv->value+0),
694 aimutil_get8(iptlv->value+1),
695 aimutil_get8(iptlv->value+2),
696 aimutil_get8(iptlv->value+3),
697 aimutil_get16(porttlv->value));
698 }
699
700 faimdprintf(sess, 0, "rend: file get request from %s (%s)\n", userinfo.sn, ip);
701
702 /*
703 * Call client.
704 */
705 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
706 if (userfunc || (i = 0))
707 i = userfunc(sess,
708 command,
709 channel,
710 reqclass,
711 &userinfo,
712 ip,
713 cookie);
714
715 } else if (reqclass & AIM_CAPS_SENDFILE) {
716 #if 0
717 char ip[30];
718 char *desc = NULL;
719 struct aim_msgcookie_t *cachedcook;
720 struct aim_filetransfer_priv *ft;
721 struct aim_tlv_t *miscinfo;
722
723 memset(ip, 0, sizeof(ip));
724
725 if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)))
726 return 0;
727
728 if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0003, 1)) {
729 struct aim_tlv_t *iptlv, *porttlv;
730
731 iptlv = aim_gettlv(list2, 0x0003, 1);
732 porttlv = aim_gettlv(list2, 0x0005, 1);
733
734 snprintf(ip, sizeof(ip)-1, "%d.%d.%d.%d:%d",
735 aimutil_get8(iptlv->value+0),
736 aimutil_get8(iptlv->value+1),
737 aimutil_get8(iptlv->value+2),
738 aimutil_get8(iptlv->value+3),
739 aimutil_get16(porttlv->value));
740 }
741
742 if (aim_gettlv(list2, 0x000c, 1)) {
743 desc = aim_gettlv_str(list2, 0x000c, 1);
744 }
745
746 faimdprintf(sess, 0, "rend: file transfer request from %s for %s: %s (%s)\n",
747 userinfo.sn,
748 miscinfo->value+8,
749 desc,
750 ip);
751
752 memcpy(cachedcook->cookie, cookie, 8);
753
754 ft = malloc(sizeof(struct aim_filetransfer_priv));
755 strncpy(ft->sn, userinfo.sn, sizeof(ft->sn));
756 strncpy(ft->ip, ip, sizeof(ft->ip));
757 strncpy(ft->fh.name, miscinfo->value+8, sizeof(ft->fh.name));
758 cachedcook->type = AIM_COOKIETYPE_OFTSEND;
759 cachedcook->data = ft;
760
761 if (aim_cachecookie(sess, cachedcook) == -1)
762 faimdprintf(sess, 0, "ERROR caching message cookie\n");
763
764
765 aim_accepttransfer(sess, command->conn, ft->sn, cookie, AIM_CAPS_SENDFILE);
766
767 if (desc)
768 free(desc);
769 #endif
770 /*
771 * Call client.
772 */
773 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0007);
774 if (userfunc || (i = 0))
775 i = userfunc(sess,
776 command,
777 channel,
778 reqclass,
779 &userinfo);
780 } else
781 faimdprintf(sess, 0, "rend: unknown rendezvous 0x%04x\n", reqclass);
782
783 aim_freetlvchain(&list2);
784 }
785 727
786 /* 728 /*
787 * Free up the TLV chain. 729 * Free up the TLV chain.
788 */ 730 */
789 aim_freetlvchain(&tlvlist); 731 aim_freetlvchain(&tlvlist);
790 732
791 733 return ret;
792 return i;
793 } 734 }
794 735
795 /* 736 /*
796 * Possible codes: 737 * Possible codes:
797 * AIM_TRANSFER_DENY_NOTSUPPORTED -- "client does not support" 738 * AIM_TRANSFER_DENY_NOTSUPPORTED -- "client does not support"
846 newpacket->lock = 1; 787 newpacket->lock = 1;
847 788
848 curbyte = aim_putsnac(newpacket->data, 0x0004, 0x0002, 0x0000, sess->snac_nextid); 789 curbyte = aim_putsnac(newpacket->data, 0x0004, 0x0002, 0x0000, sess->snac_nextid);
849 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000); 790 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
850 curbyte += aimutil_put32(newpacket->data+curbyte, 0x00000003); 791 curbyte += aimutil_put32(newpacket->data+curbyte, 0x00000003);
851 curbyte += aimutil_put8(newpacket->data+curbyte, 0x1f); 792 curbyte += aimutil_put16(newpacket->data+curbyte, 0x1f40);
852 curbyte += aimutil_put8(newpacket->data+curbyte, 0x40); 793 curbyte += aimutil_put16(newpacket->data+curbyte, 0x03e7);
853 curbyte += aimutil_put8(newpacket->data+curbyte, 0x03); 794 curbyte += aimutil_put16(newpacket->data+curbyte, 0x03e7);
854 curbyte += aimutil_put8(newpacket->data+curbyte, 0xe7); 795 curbyte += aimutil_put32(newpacket->data+curbyte, 0x00000000);
855 curbyte += aimutil_put8(newpacket->data+curbyte, 0x03);
856 curbyte += aimutil_put8(newpacket->data+curbyte, 0xe7);
857 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
858 curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
859 796
860 newpacket->lock = 0; 797 newpacket->lock = 0;
861 aim_tx_enqueue(sess, newpacket); 798 aim_tx_enqueue(sess, newpacket);
862 799
863 return (sess->snac_nextid++); 800 return (sess->snac_nextid++);
864 } 801 }
865 802
866 faim_internal int aim_parse_msgerror_middle(struct aim_session_t *sess, 803 static int paraminfo(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
867 struct command_rx_struct *command) 804 {
868 { 805 unsigned long defflags, minmsginterval;
869 u_long snacid = 0x000000000; 806 unsigned short maxicbmlen, maxsenderwarn, maxrecverwarn, maxchannel;
870 struct aim_snac_t *snac = NULL; 807 rxcallback_t userfunc;
871 int ret = 0; 808 int i = 0;
872 rxcallback_t userfunc = NULL; 809
873 char *dest; 810 maxchannel = aimutil_get16(data+i);
874 unsigned short reason = 0; 811 i += 2;
875 812
876 /* 813 defflags = aimutil_get32(data+i);
877 * Get SNAC from packet and look it up 814 i += 4;
878 * the list of unrepliedto/outstanding 815
879 * SNACs. 816 maxicbmlen = aimutil_get16(data+i);
880 * 817 i += 2;
881 * After its looked up, the SN that the 818
882 * message should've gone to will be 819 maxsenderwarn = aimutil_get16(data+i);
883 * in the ->data element of the snac struct. 820 i += 2;
884 * 821
885 */ 822 maxrecverwarn = aimutil_get16(data+i);
886 snacid = aimutil_get32(command->data+6); 823 i += 2;
887 snac = aim_remsnac(sess, snacid); 824
888 825 minmsginterval = aimutil_get32(data+i);
889 if (!snac) { 826 i += 4;
890 faimdprintf(sess, 0, "msgerr: got an ICBM-failed error on an unknown SNAC ID! (%08lx)\n", snacid); 827
891 dest = NULL; 828 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
892 } else 829 return userfunc(sess, rx, maxchannel, defflags, maxicbmlen, maxsenderwarn, maxrecverwarn, minmsginterval);
893 dest = snac->data; 830
894 831 return 0;
895 reason = aimutil_get16(command->data+10); 832 }
896 833
897 /* 834 static int missedcall(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
898 * Call client. 835 {
899 */ 836 int i = 0;
900 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x0001); 837 rxcallback_t userfunc;
901 if (userfunc)
902 ret = userfunc(sess, command, dest, reason);
903 else
904 ret = 0;
905
906 if (snac) {
907 free(snac->data);
908 free(snac);
909 }
910
911 return ret;
912 }
913
914
915 faim_internal int aim_parse_missedcall(struct aim_session_t *sess,
916 struct command_rx_struct *command)
917 {
918 int i, ret = 1;
919 rxcallback_t userfunc = NULL;
920 unsigned short channel, nummissed, reason; 838 unsigned short channel, nummissed, reason;
921 struct aim_userinfo_s userinfo; 839 struct aim_userinfo_s userinfo;
922 840
923 i = 10; /* Skip SNAC header */
924
925
926 /* 841 /*
927 * XXX: supposedly, this entire packet can repeat as many times 842 * XXX: supposedly, this entire packet can repeat as many times
928 * as necessary. Should implement that. 843 * as necessary. Should implement that.
929 */ 844 */
930 845
931 /* 846 /*
932 * Channel ID. 847 * Channel ID.
933 */ 848 */
934 channel = aimutil_get16(command->data+i); 849 channel = aimutil_get16(data+i);
935 i += 2; 850 i += 2;
936 851
937 /* 852 /*
938 * Extract the standard user info block. 853 * Extract the standard user info block.
939 */ 854 */
940 i += aim_extractuserinfo(sess, command->data+i, &userinfo); 855 i += aim_extractuserinfo(sess, data+i, &userinfo);
941 856
942 nummissed = aimutil_get16(command->data+i); 857 nummissed = aimutil_get16(data+i);
943 i += 2; 858 i += 2;
944 859
945 reason = aimutil_get16(command->data+i); 860 reason = aimutil_get16(data+i);
946 i += 2; 861 i += 2;
947 862
948 /* 863 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
949 * Call client. 864 return userfunc(sess, rx, channel, &userinfo, nummissed, reason);
950 */ 865
951 userfunc = aim_callhandler(sess, command->conn, 0x0004, 0x000a); 866 return 0;
952 if (userfunc) 867 }
953 ret = userfunc(sess, command, channel, &userinfo, nummissed, reason); 868
954 else 869 static int msgack(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
955 ret = 0; 870 {
956 871 rxcallback_t userfunc;
957 return ret; 872 char sn[MAXSNLEN];
958 } 873 unsigned char ck[8];
874 unsigned short type;
875 int i = 0;
876 unsigned char snlen;
877
878 memcpy(ck, data, 8);
879 i += 8;
880
881 type = aimutil_get16(data+i);
882 i += 2;
883
884 snlen = aimutil_get8(data+i);
885 i++;
886
887 memset(sn, 0, sizeof(sn));
888 strncpy(sn, (char *)data+i, snlen);
889
890 if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
891 return userfunc(sess, rx, type, sn);
892
893 return 0;
894 }
895
896 static int snachandler(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
897 {
898
899 if (snac->subtype == 0x0005)
900 return paraminfo(sess, mod, rx, snac, data, datalen);
901 else if (snac->subtype == 0x0006)
902 return outgoingim(sess, mod, rx, snac, data, datalen);
903 else if (snac->subtype == 0x0007)
904 return incomingim(sess, mod, rx, snac, data, datalen);
905 else if (snac->subtype == 0x000a)
906 return missedcall(sess, mod, rx, snac, data, datalen);
907 else if (snac->subtype == 0x000c)
908 return msgack(sess, mod, rx, snac, data, datalen);
909
910 return 0;
911 }
912
913 faim_internal int msg_modfirst(struct aim_session_t *sess, aim_module_t *mod)
914 {
915
916 mod->family = 0x0004;
917 mod->version = 0x0000;
918 mod->flags = 0;
919 strncpy(mod->name, "messaging", sizeof(mod->name));
920 mod->snachandler = snachandler;
921
922 return 0;
923 }

Mercurial Repository: pidgin3

mercurial