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_parse_evilnotify_middle(sess, workingPtr);
428 workingPtr->handled = aim_parsemotd_middle(sess, workingPtr);
431 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_GEN, AIM_CB_GEN_DEFAULT, workingPtr);
434 case 0x0002: /* Family: Location */
437 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0001, workingPtr);
440 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0003, workingPtr);
443 workingPtr->handled = aim_parse_userinfo_middle(sess, workingPtr);
446 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOC, AIM_CB_LOC_DEFAULT, workingPtr);
449 case 0x0003: /* Family: Buddy List */
452 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
455 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0003, 0x0003, workingPtr);
457 case 0x000b: /* oncoming buddy */
458 workingPtr->handled = aim_parse_oncoming_middle(sess, workingPtr);
460 case 0x000c: /* offgoing buddy */
461 workingPtr->handled = aim_parse_offgoing_middle(sess, workingPtr);
464 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BUD, AIM_CB_BUD_DEFAULT, workingPtr);
467 case 0x0004: /* Family: Messeging */
470 workingPtr->handled = aim_parse_msgerror_middle(sess, workingPtr);
473 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x0005, workingPtr);
476 workingPtr->handled = aim_parse_outgoing_im_middle(sess, workingPtr);
479 workingPtr->handled = aim_parse_incoming_im_middle(sess, workingPtr);
482 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x000a, workingPtr);
485 workingPtr->handled = aim_parse_msgack_middle(sess, workingPtr);
488 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_MSG, AIM_CB_MSG_DEFAULT, workingPtr);
492 if (subtype == 0x0001)
493 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
494 else if (subtype == 0x0003)
495 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0009, 0x0003, workingPtr);
497 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BOS, AIM_CB_BOS_DEFAULT, workingPtr);
499 case 0x000a: /* Family: User lookup */
502 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0001, workingPtr);
505 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0003, workingPtr);
508 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOK, AIM_CB_LOK_DEFAULT, workingPtr);
512 if (subtype == 0x0001)
513 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
514 else if (subtype == 0x0002)
515 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000b, 0x0002, workingPtr);
517 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_STS, AIM_CB_STS_DEFAULT, workingPtr);
519 case AIM_CB_FAM_SPECIAL:
520 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
523 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
528 case AIM_CONN_TYPE_CHATNAV: {
531 family = aimutil_get16(workingPtr->data);
532 subtype= aimutil_get16(workingPtr->data+2);
534 if ((family == 0x0002) && (subtype == 0x0006)) {
535 workingPtr->handled = 1;
536 aim_conn_setstatus(workingPtr->conn, AIM_CONN_STATUS_READY);
537 } else if ((family == 0x000d) && (subtype == 0x0009)) {
538 workingPtr->handled = aim_chatnav_parse_info(sess, workingPtr);
540 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
544 case AIM_CONN_TYPE_CHAT: {
545 u_short family, subtype;
547 family = aimutil_get16(workingPtr->data);
548 subtype= aimutil_get16(workingPtr->data+2);
550 if ((family == 0x0000) && (subtype == 0x00001))
551 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0000, 0x0001, workingPtr);
552 else if (family == 0x0001) {
553 if (subtype == 0x0001)
554 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0001, workingPtr);
555 else if (subtype == 0x0003)
556 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0003, workingPtr);
557 else if (subtype == 0x0007)
558 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0007, workingPtr);
560 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
561 } else if (family == 0x000e) {
562 if (subtype == 0x0002)
563 workingPtr->handled = aim_chat_parse_infoupdate(sess, workingPtr);
564 else if (subtype == 0x0003)
565 workingPtr->handled = aim_chat_parse_joined(sess, workingPtr);
566 else if (subtype == 0x0004)
567 workingPtr->handled = aim_chat_parse_leave(sess, workingPtr);
568 else if (subtype == 0x0006)
569 workingPtr->handled = aim_chat_parse_incoming(sess, workingPtr);
571 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
573 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
574 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_DEFAULT, workingPtr);
578 case AIM_CONN_TYPE_RENDEZVOUS: {
579 /* make sure that we only get OFT frames on these connections */
580 if (workingPtr->hdrtype != AIM_FRAMETYPE_OFT) {
581 printf("faim: internal error: non-OFT frames on OFT connection\n");
582 workingPtr->handled = 1; /* get rid of it */
586 /* XXX: implement this */
587 printf("faim: OFT frame!\n");
591 case AIM_CONN_TYPE_RENDEZVOUS_OUT: {
596 printf("\ninternal error: unknown connection type (very bad.) (type = %d, fd = %d, commandlen = %02x)\n\n", workingPtr->conn->type, workingPtr->conn->fd, workingPtr->commandlen);
597 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
604 * This doesn't have to be called here. It could easily be done
605 * by a seperate thread or something. It's an administrative operation,
606 * and can take a while. Though the less you call it the less memory
609 aim_purge_rxqueue(sess);
614 int aim_parse_msgack_middle(struct aim_session_t *sess, struct command_rx_struct *command)
616 rxcallback_t userfunc = NULL;
619 int i = 10+8; /* skip SNAC and cookie */
623 type = aimutil_get16(command->data+i);
626 snlen = aimutil_get8(command->data+i);
629 memset(sn, 0, sizeof(sn));
630 strncpy(sn, command->data+i, snlen);
632 if ((userfunc = aim_callhandler(command->conn, 0x0004, 0x000c)))
633 ret = userfunc(sess, command, type, sn);
638 int aim_parse_ratechange_middle(struct aim_session_t *sess, struct command_rx_struct *command)
640 rxcallback_t userfunc = NULL;
642 unsigned long newrate;
644 if (command->commandlen != 0x2f) {
645 printf("faim: unknown rate change length 0x%04x\n", command->commandlen);
649 newrate = aimutil_get32(command->data+34);
651 if ((userfunc = aim_callhandler(command->conn, 0x0001, 0x000a)))
652 ret = userfunc(sess, command, newrate);
657 int aim_parse_evilnotify_middle(struct aim_session_t *sess, struct command_rx_struct *command)
659 rxcallback_t userfunc = NULL;
663 if(command->commandlen < 12) /* a warning level dec sends this */
666 if ((pos = aimutil_get8(command->data+ 12)) > MAXSNLEN)
669 if(!(sn = (char *)calloc(1, pos+1)))
672 memcpy(sn, command->data+13, pos);
674 if ((userfunc = aim_callhandler(command->conn, 0x0001, 0x0010)))
675 ret = userfunc(sess, command, sn);
682 int aim_parsemotd_middle(struct aim_session_t *sess,
683 struct command_rx_struct *command, ...)
685 rxcallback_t userfunc = NULL;
688 struct aim_tlvlist_t *tlvlist;
695 * 1 Mandatory upgrade
698 * 4 Nothing's wrong ("top o the world" -- normal)
701 id = aimutil_get16(command->data+10);
706 if (!(tlvlist = aim_readtlvchain(command->data+12, command->commandlen-12)))
709 if (!(msg = aim_gettlv_str(tlvlist, 0x000b, 1))) {
710 aim_freetlvchain(&tlvlist);
714 userfunc = aim_callhandler(command->conn, 0x0001, 0x0013);
716 ret = userfunc(sess, command, id, msg);
718 aim_freetlvchain(&tlvlist);
724 int aim_handleredirect_middle(struct aim_session_t *sess,
725 struct command_rx_struct *command, ...)
727 struct aim_tlv_t *tmptlv = NULL;
728 int serviceid = 0x00;
729 char cookie[AIM_COOKIELEN];
731 rxcallback_t userfunc = NULL;
732 struct aim_tlvlist_t *tlvlist;
735 if (!(tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10)))
737 printf("libfaim: major bug: unable to read tlvchain from redirect\n");
741 if (!(tmptlv = aim_gettlv(tlvlist, 0x000d, 1)))
743 printf("libfaim: major bug: no service ID in tlvchain from redirect\n");
744 aim_freetlvchain(&tlvlist);
747 serviceid = aimutil_get16(tmptlv->value);
749 if (!(ip = aim_gettlv_str(tlvlist, 0x0005, 1)))
751 printf("libfaim: major bug: no IP in tlvchain from redirect (service 0x%02x)\n", serviceid);
753 aim_freetlvchain(&tlvlist);
757 if (!(tmptlv = aim_gettlv(tlvlist, 0x0006, 1)))
759 printf("libfaim: major bug: no cookie in tlvchain from redirect (service 0x%02x)\n", serviceid);
761 aim_freetlvchain(&tlvlist);
764 memcpy(cookie, tmptlv->value, AIM_COOKIELEN);
766 if (serviceid == AIM_CONN_TYPE_CHAT)
772 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
774 ret = userfunc(sess, command, serviceid, ip, cookie, sess->pendingjoin);
775 free(sess->pendingjoin);
776 sess->pendingjoin = NULL;
780 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
782 ret = userfunc(sess, command, serviceid, ip, cookie);
786 aim_freetlvchain(&tlvlist);
791 int aim_parse_unknown(struct aim_session_t *sess,
792 struct command_rx_struct *command, ...)
796 faimdprintf(1, "\nRecieved unknown packet:");
798 for (i = 0; i < command->commandlen; i++)
801 faimdprintf(1, "\n\t");
803 faimdprintf(1, "0x%2x ", command->data[i]);
806 faimdprintf(1, "\n\n");
812 int aim_negchan_middle(struct aim_session_t *sess,
813 struct command_rx_struct *command)
815 struct aim_tlvlist_t *tlvlist;
817 unsigned short code = 0;
818 struct aim_tlv_t *tmptlv;
819 rxcallback_t userfunc = NULL;
822 tlvlist = aim_readtlvchain(command->data, command->commandlen);
824 if ((tmptlv = aim_gettlv(tlvlist, 0x0009, 1)))
825 code = aimutil_get16(tmptlv->value);
827 if ((tmptlv = aim_gettlv(tlvlist, 0x000b, 1)))
828 msg = aim_gettlv_str(tlvlist, 0x000b, 1);
830 userfunc = aim_callhandler(command->conn,
831 AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNERR);
833 ret = userfunc(sess, command, code, msg);
835 aim_freetlvchain(&tlvlist);
842 * aim_parse_generalerrs()
844 * Middle handler for 0x0001 snac of each family.
847 int aim_parse_generalerrs(struct aim_session_t *sess,
848 struct command_rx_struct *command, ...)
853 family = aimutil_get16(command->data+0);
854 subtype= aimutil_get16(command->data+2);
860 return aim_callhandler_noparam(sess, command->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, command);