4 * This file contains most all of the incoming packet handlers, along
5 * with aim_rxdispatch(), the Rx dispatcher. Queue/list management is
6 * actually done in aim_rxqueue.c.
13 * Bleck functions get called when there's no non-bleck functions
14 * around to cleanup the mess...
16 int bleck(struct aim_session_t *sess,struct command_rx_struct *workingPtr, ...)
24 /* XXX: this is ugly. and big just for debugging. */
25 char *literals[14][25] = {
36 "Rate Information Request",
38 "Rate Information Ack",
40 "Rate Information Change",
44 "Request Personal User Information",
45 "Personal User Information",
59 "Set user information",
60 "Request User Information",
62 "Watcher Sub Request",
63 "Watcher Notification"
65 {"Buddy List Management",
73 "Watcher List Response",
75 "Watcher Notification",
76 "Reject Notification",
84 "Remove ICBM Parameter",
85 "Request Parameter Information",
86 "Parameter Information",
101 {"Invitation / Client-to-Client",
110 "Information Request",
112 "Information Change Request",
113 "Information Chat Reply",
114 "Account Confirm Request",
115 "Account Confirm Reply",
116 "Account Delete Request",
117 "Account Delete Reply"
129 "Set group permission mask",
130 "Add permission list entries",
131 "Delete permission list entries",
132 "Add deny list entries",
133 "Delete deny list entries",
145 "Set minimum report interval",
158 "Request Exchange Information",
159 "Request Room Information",
160 "Request Occupant List",
170 maxf = sizeof(literals) / sizeof(literals[0]);
171 maxs = sizeof(literals[0]) / sizeof(literals[0][0]);
173 family = aimutil_get16(workingPtr->data+0);
174 subtype= aimutil_get16(workingPtr->data+2);
176 if((family < maxf) && (subtype+1 < maxs) && (literals[family][subtype] != NULL))
177 printf("bleck: null handler for %04x/%04x (%s)\n", family, subtype, literals[family][subtype+1]);
179 printf("bleck: null handler for %04x/%04x (no literal)\n",family,subtype);
184 int aim_conn_addhandler(struct aim_session_t *sess,
185 struct aim_conn_t *conn,
188 rxcallback_t newhandler,
191 struct aim_rxcblist_t *new,*cur;
196 faimdprintf(1, "aim_conn_addhandler: adding for %04x/%04x\n", family, type);
198 new = (struct aim_rxcblist_t *)calloc(1, sizeof(struct aim_rxcblist_t));
199 new->family = family;
203 new->handler = &bleck;
205 new->handler = newhandler;
208 cur = conn->handlerlist;
210 conn->handlerlist = new;
221 int aim_clearhandlers(struct aim_conn_t *conn)
223 struct aim_rxcblist_t *cur,*tmp;
227 cur = conn->handlerlist;
237 rxcallback_t aim_callhandler(struct aim_conn_t *conn,
241 struct aim_rxcblist_t *cur;
246 faimdprintf(1, "aim_callhandler: calling for %04x/%04x\n", family, type);
248 cur = conn->handlerlist;
251 if ( (cur->family == family) && (cur->type == type) )
258 return aim_callhandler(conn, family, 0xffff);
261 int aim_callhandler_noparam(struct aim_session_t *sess,
262 struct aim_conn_t *conn,
265 struct command_rx_struct *ptr)
267 rxcallback_t userfunc = NULL;
268 userfunc = aim_callhandler(conn, family, type);
270 return userfunc(sess, ptr);
277 Basically, heres what this should do:
278 1) Determine correct packet handler for this packet
279 2) Mark the packet handled (so it can be dequeued in purge_queue())
280 3) Send the packet to the packet handler
281 4) Go to next packet in the queue and start over
282 5) When done, run purge_queue() to purge handled commands
284 Note that any unhandlable packets should probably be left in the
285 queue. This is the best way to prevent data loss. This means
286 that a single packet may get looked at by this function multiple
287 times. This is more good than bad! This behavior may change.
291 TODO: Get rid of all the ugly if's.
293 TODO: More support for mid-level handlers.
294 TODO: Allow for NULL handlers.
297 int aim_rxdispatch(struct aim_session_t *sess)
300 struct command_rx_struct *workingPtr = NULL;
302 if (sess->queue_incoming == NULL) {
303 faimdprintf(1, "parse_generic: incoming packet queue empty.\n");
306 workingPtr = sess->queue_incoming;
307 for (i = 0; workingPtr != NULL; workingPtr = workingPtr->next, i++) {
309 * XXX: This is still fairly ugly.
311 if (workingPtr->handled)
315 * This is a debugging/sanity check only and probably could/should be removed
318 if (((workingPtr->hdrtype == AIM_FRAMETYPE_OFT) &&
319 (workingPtr->conn->type != AIM_CONN_TYPE_RENDEZVOUS)) ||
320 ((workingPtr->hdrtype == AIM_FRAMETYPE_OSCAR) &&
321 (workingPtr->conn->type == AIM_CONN_TYPE_RENDEZVOUS))) {
322 printf("faim: rxhandlers: incompatible frame type %d on connection type 0x%04x\n", workingPtr->hdrtype, workingPtr->conn->type);
323 workingPtr->handled = 1;
327 switch(workingPtr->conn->type) {
330 * This can happen if we have a queued command
331 * that was recieved after a connection has
332 * been terminated. In which case, the handler
333 * list has been cleared, and there's nothing we
334 * can do for it. We can only cancel it.
336 workingPtr->handled = 1;
338 case AIM_CONN_TYPE_AUTH: {
341 head = aimutil_get32(workingPtr->data);
342 if (head == 0x00000001) {
343 faimdprintf(1, "got connection ack on auth line\n");
344 workingPtr->handled = 1;
345 } else if (workingPtr->hdr.oscar.type == 0x0004) {
346 workingPtr->handled = aim_authparse(sess, workingPtr);
348 u_short family,subtype;
350 family = aimutil_get16(workingPtr->data);
351 subtype = aimutil_get16(workingPtr->data+2);
354 /* New login protocol */
356 if (subtype == 0x0001)
357 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0017, 0x0001, workingPtr);
358 else if (subtype == 0x0003)
359 workingPtr->handled = aim_authparse(sess, workingPtr);
360 else if (subtype == 0x0007)
361 workingPtr->handled = aim_authkeyparse(sess, workingPtr);
363 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0017, 0xffff, workingPtr);
366 if (subtype == 0x0005)
367 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_ADM, AIM_CB_ADM_INFOCHANGE_REPLY, workingPtr);
369 case AIM_CB_FAM_SPECIAL:
370 if (subtype == AIM_CB_SPECIAL_DEBUGCONN_CONNECT) {
371 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
373 } /* others fall through */
376 /* Old login protocol */
377 /* any user callbacks will be called from here */
378 workingPtr->handled = aim_authparse(sess, workingPtr);
385 case AIM_CONN_TYPE_BOS: {
389 if (workingPtr->hdr.oscar.type == 0x04) {
390 workingPtr->handled = aim_negchan_middle(sess, workingPtr);
394 family = aimutil_get16(workingPtr->data);
395 subtype = aimutil_get16(workingPtr->data+2);
398 case 0x0000: /* not really a family, but it works */
399 if (subtype == 0x0001)
400 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0000, 0x0001, workingPtr);
402 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
404 case 0x0001: /* Family: General */
407 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
410 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0003, workingPtr);
413 workingPtr->handled = aim_handleredirect_middle(sess, workingPtr);
416 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0007, workingPtr);
419 workingPtr->handled = aim_parse_ratechange_middle(sess, workingPtr);
422 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x000f, workingPtr);
425 workingPtr->handled = aim_parsemotd_middle(sess, workingPtr);
428 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_GEN, AIM_CB_GEN_DEFAULT, workingPtr);
431 case 0x0002: /* Family: Location */
434 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0001, workingPtr);
437 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0003, workingPtr);
440 workingPtr->handled = aim_parse_userinfo_middle(sess, workingPtr);
443 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOC, AIM_CB_LOC_DEFAULT, workingPtr);
446 case 0x0003: /* Family: Buddy List */
449 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
452 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0003, 0x0003, workingPtr);
454 case 0x000b: /* oncoming buddy */
455 workingPtr->handled = aim_parse_oncoming_middle(sess, workingPtr);
457 case 0x000c: /* offgoing buddy */
458 workingPtr->handled = aim_parse_offgoing_middle(sess, workingPtr);
461 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BUD, AIM_CB_BUD_DEFAULT, workingPtr);
464 case 0x0004: /* Family: Messeging */
467 workingPtr->handled = aim_parse_msgerror_middle(sess, workingPtr);
470 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x0005, workingPtr);
473 workingPtr->handled = aim_parse_outgoing_im_middle(sess, workingPtr);
476 workingPtr->handled = aim_parse_incoming_im_middle(sess, workingPtr);
479 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x000a, workingPtr);
482 workingPtr->handled = aim_parse_msgack_middle(sess, workingPtr);
485 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_MSG, AIM_CB_MSG_DEFAULT, workingPtr);
489 if (subtype == 0x0001)
490 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
491 else if (subtype == 0x0003)
492 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0009, 0x0003, workingPtr);
494 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BOS, AIM_CB_BOS_DEFAULT, workingPtr);
496 case 0x000a: /* Family: User lookup */
499 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0001, workingPtr);
502 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0003, workingPtr);
505 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOK, AIM_CB_LOK_DEFAULT, workingPtr);
509 if (subtype == 0x0001)
510 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
511 else if (subtype == 0x0002)
512 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000b, 0x0002, workingPtr);
514 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_STS, AIM_CB_STS_DEFAULT, workingPtr);
516 case AIM_CB_FAM_SPECIAL:
517 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
520 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
525 case AIM_CONN_TYPE_CHATNAV: {
528 family = aimutil_get16(workingPtr->data);
529 subtype= aimutil_get16(workingPtr->data+2);
531 if ((family == 0x0002) && (subtype == 0x0006)) {
532 workingPtr->handled = 1;
533 aim_conn_setstatus(workingPtr->conn, AIM_CONN_STATUS_READY);
534 } else if ((family == 0x000d) && (subtype == 0x0009)) {
535 workingPtr->handled = aim_chatnav_parse_info(sess, workingPtr);
537 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
541 case AIM_CONN_TYPE_CHAT: {
542 u_short family, subtype;
544 family = aimutil_get16(workingPtr->data);
545 subtype= aimutil_get16(workingPtr->data+2);
547 if ((family == 0x0000) && (subtype == 0x00001))
548 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0000, 0x0001, workingPtr);
549 else if (family == 0x0001) {
550 if (subtype == 0x0001)
551 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0001, workingPtr);
552 else if (subtype == 0x0003)
553 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0003, workingPtr);
554 else if (subtype == 0x0007)
555 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0007, workingPtr);
557 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
558 } else if (family == 0x000e) {
559 if (subtype == 0x0002)
560 workingPtr->handled = aim_chat_parse_infoupdate(sess, workingPtr);
561 else if (subtype == 0x0003)
562 workingPtr->handled = aim_chat_parse_joined(sess, workingPtr);
563 else if (subtype == 0x0004)
564 workingPtr->handled = aim_chat_parse_leave(sess, workingPtr);
565 else if (subtype == 0x0006)
566 workingPtr->handled = aim_chat_parse_incoming(sess, workingPtr);
568 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
570 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
571 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_DEFAULT, workingPtr);
575 case AIM_CONN_TYPE_RENDEZVOUS: {
576 /* make sure that we only get OFT frames on these connections */
577 if (workingPtr->hdrtype != AIM_FRAMETYPE_OFT) {
578 printf("faim: internal error: non-OFT frames on OFT connection\n");
579 workingPtr->handled = 1; /* get rid of it */
583 /* XXX: implement this */
584 printf("faim: OFT frame!\n");
588 case AIM_CONN_TYPE_RENDEZVOUS_OUT: {
593 printf("\ninternal error: unknown connection type (very bad.) (type = %d, fd = %d, commandlen = %02x)\n\n", workingPtr->conn->type, workingPtr->conn->fd, workingPtr->commandlen);
594 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
601 * This doesn't have to be called here. It could easily be done
602 * by a seperate thread or something. It's an administrative operation,
603 * and can take a while. Though the less you call it the less memory
606 aim_purge_rxqueue(sess);
611 int aim_parse_msgack_middle(struct aim_session_t *sess, struct command_rx_struct *command)
613 rxcallback_t userfunc = NULL;
616 int i = 10+8; /* skip SNAC and cookie */
620 type = aimutil_get16(command->data+i);
623 snlen = aimutil_get8(command->data+i);
626 memset(sn, 0, sizeof(sn));
627 strncpy(sn, command->data+i, snlen);
629 if ((userfunc = aim_callhandler(command->conn, 0x0004, 0x000c)))
630 ret = userfunc(sess, command, type, sn);
635 int aim_parse_ratechange_middle(struct aim_session_t *sess, struct command_rx_struct *command)
637 rxcallback_t userfunc = NULL;
639 unsigned long newrate;
641 if (command->commandlen != 0x2f) {
642 printf("faim: unknown rate change length 0x%04x\n", command->commandlen);
646 newrate = aimutil_get32(command->data+34);
648 if ((userfunc = aim_callhandler(command->conn, 0x0001, 0x000a)))
649 ret = userfunc(sess, command, newrate);
654 int aim_parsemotd_middle(struct aim_session_t *sess,
655 struct command_rx_struct *command, ...)
657 rxcallback_t userfunc = NULL;
660 struct aim_tlvlist_t *tlvlist;
666 id = aimutil_get16(command->data+10);
671 if (!(tlvlist = aim_readtlvchain(command->data+12, command->commandlen-12)))
674 if (!(msg = aim_gettlv_str(tlvlist, 0x000b, 1))) {
675 aim_freetlvchain(&tlvlist);
679 userfunc = aim_callhandler(command->conn, 0x0001, 0x0013);
681 ret = userfunc(sess, command, id, msg);
683 aim_freetlvchain(&tlvlist);
689 int aim_handleredirect_middle(struct aim_session_t *sess,
690 struct command_rx_struct *command, ...)
692 struct aim_tlv_t *tmptlv = NULL;
693 int serviceid = 0x00;
694 char cookie[AIM_COOKIELEN];
696 rxcallback_t userfunc = NULL;
697 struct aim_tlvlist_t *tlvlist;
700 if (!(tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10)))
702 printf("libfaim: major bug: unable to read tlvchain from redirect\n");
706 if (!(tmptlv = aim_gettlv(tlvlist, 0x000d, 1)))
708 printf("libfaim: major bug: no service ID in tlvchain from redirect\n");
709 aim_freetlvchain(&tlvlist);
712 serviceid = aimutil_get16(tmptlv->value);
714 if (!(ip = aim_gettlv_str(tlvlist, 0x0005, 1)))
716 printf("libfaim: major bug: no IP in tlvchain from redirect (service 0x%02x)\n", serviceid);
718 aim_freetlvchain(&tlvlist);
722 if (!(tmptlv = aim_gettlv(tlvlist, 0x0006, 1)))
724 printf("libfaim: major bug: no cookie in tlvchain from redirect (service 0x%02x)\n", serviceid);
726 aim_freetlvchain(&tlvlist);
729 memcpy(cookie, tmptlv->value, AIM_COOKIELEN);
731 if (serviceid == AIM_CONN_TYPE_CHAT)
737 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
739 ret = userfunc(sess, command, serviceid, ip, cookie, sess->pendingjoin);
740 free(sess->pendingjoin);
741 sess->pendingjoin = NULL;
745 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
747 ret = userfunc(sess, command, serviceid, ip, cookie);
751 aim_freetlvchain(&tlvlist);
756 int aim_parse_unknown(struct aim_session_t *sess,
757 struct command_rx_struct *command, ...)
761 faimdprintf(1, "\nRecieved unknown packet:");
763 for (i = 0; i < command->commandlen; i++)
766 faimdprintf(1, "\n\t");
768 faimdprintf(1, "0x%2x ", command->data[i]);
771 faimdprintf(1, "\n\n");
777 int aim_negchan_middle(struct aim_session_t *sess,
778 struct command_rx_struct *command)
780 struct aim_tlvlist_t *tlvlist;
782 unsigned short code = 0;
783 struct aim_tlv_t *tmptlv;
784 rxcallback_t userfunc = NULL;
787 tlvlist = aim_readtlvchain(command->data, command->commandlen);
789 if ((tmptlv = aim_gettlv(tlvlist, 0x0009, 1)))
790 code = aimutil_get16(tmptlv->value);
792 if ((tmptlv = aim_gettlv(tlvlist, 0x000b, 1)))
793 msg = aim_gettlv_str(tlvlist, 0x000b, 1);
795 userfunc = aim_callhandler(command->conn,
796 AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNERR);
798 ret = userfunc(sess, command, code, msg);
800 aim_freetlvchain(&tlvlist);
807 * aim_parse_generalerrs()
809 * Middle handler for 0x0001 snac of each family.
812 int aim_parse_generalerrs(struct aim_session_t *sess,
813 struct command_rx_struct *command, ...)
818 family = aimutil_get16(command->data+0);
819 subtype= aimutil_get16(command->data+2);
825 return aim_callhandler_noparam(sess, command->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, command);