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 */
357 if (subtype == 0x0001)
358 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0017, 0x0001, workingPtr);
359 else if (subtype == 0x0003)
360 workingPtr->handled = aim_authparse(sess, workingPtr);
361 else if (subtype == 0x0007)
362 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0017, 0x0007, workingPtr);
364 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0017, 0xffff, workingPtr);
367 /* XXX: this isnt foolproof */
369 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_GEN, AIM_CB_GEN_SERVERREADY, workingPtr);
372 if (subtype == 0x0005)
373 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_ADM, AIM_CB_ADM_INFOCHANGE_REPLY, workingPtr);
375 case AIM_CB_FAM_SPECIAL:
376 if (subtype == AIM_CB_SPECIAL_DEBUGCONN_CONNECT) {
377 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
379 } /* others fall through */
381 /* Old login protocol */
382 /* any user callbacks will be called from here */
383 workingPtr->handled = aim_authparse(sess, workingPtr);
389 case AIM_CONN_TYPE_BOS: {
393 if (workingPtr->hdr.oscar.type == 0x04) {
394 workingPtr->handled = aim_negchan_middle(sess, workingPtr);
398 family = aimutil_get16(workingPtr->data);
399 subtype = aimutil_get16(workingPtr->data+2);
402 case 0x0000: /* not really a family, but it works */
403 if (subtype == 0x0001)
404 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0000, 0x0001, workingPtr);
406 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
408 case 0x0001: /* Family: General */
411 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
414 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0003, workingPtr);
417 workingPtr->handled = aim_handleredirect_middle(sess, workingPtr);
420 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0007, workingPtr);
423 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x000a, workingPtr);
426 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x000f, workingPtr);
429 workingPtr->handled = aim_parsemotd_middle(sess, workingPtr);
432 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_GEN, AIM_CB_GEN_DEFAULT, workingPtr);
435 case 0x0002: /* Family: Location */
438 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0001, workingPtr);
441 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0002, 0x0003, workingPtr);
444 workingPtr->handled = aim_parse_userinfo_middle(sess, workingPtr);
447 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOC, AIM_CB_LOC_DEFAULT, workingPtr);
450 case 0x0003: /* Family: Buddy List */
453 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
456 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0003, 0x0003, workingPtr);
458 case 0x000b: /* oncoming buddy */
459 workingPtr->handled = aim_parse_oncoming_middle(sess, workingPtr);
461 case 0x000c: /* offgoing buddy */
462 workingPtr->handled = aim_parse_offgoing_middle(sess, workingPtr);
465 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BUD, AIM_CB_BUD_DEFAULT, workingPtr);
468 case 0x0004: /* Family: Messeging */
471 workingPtr->handled = aim_parse_msgerror_middle(sess, workingPtr);
474 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x0005, workingPtr);
477 workingPtr->handled = aim_parse_outgoing_im_middle(sess, workingPtr);
480 workingPtr->handled = aim_parse_incoming_im_middle(sess, workingPtr);
483 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0004, 0x000a, workingPtr);
486 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_MSG, AIM_CB_MSG_DEFAULT, workingPtr);
490 if (subtype == 0x0001)
491 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
492 else if (subtype == 0x0003)
493 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0009, 0x0003, workingPtr);
495 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_BOS, AIM_CB_BOS_DEFAULT, workingPtr);
497 case 0x000a: /* Family: User lookup */
500 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0001, workingPtr);
503 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000a, 0x0003, workingPtr);
506 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_LOK, AIM_CB_LOK_DEFAULT, workingPtr);
510 if (subtype == 0x0001)
511 workingPtr->handled = aim_parse_generalerrs(sess, workingPtr);
512 else if (subtype == 0x0002)
513 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x000b, 0x0002, workingPtr);
515 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_STS, AIM_CB_STS_DEFAULT, workingPtr);
517 case AIM_CB_FAM_SPECIAL:
518 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
521 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
526 case AIM_CONN_TYPE_CHATNAV: {
529 family = aimutil_get16(workingPtr->data);
530 subtype= aimutil_get16(workingPtr->data+2);
532 if ((family == 0x0002) && (subtype == 0x0006)) {
533 workingPtr->handled = 1;
534 aim_conn_setstatus(workingPtr->conn, AIM_CONN_STATUS_READY);
535 } else if ((family == 0x000d) && (subtype == 0x0009)) {
536 workingPtr->handled = aim_chatnav_parse_info(sess, workingPtr);
538 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, family, subtype, workingPtr);
542 case AIM_CONN_TYPE_CHAT: {
543 u_short family, subtype;
545 family = aimutil_get16(workingPtr->data);
546 subtype= aimutil_get16(workingPtr->data+2);
548 if ((family == 0x0000) && (subtype == 0x00001))
549 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0000, 0x0001, workingPtr);
550 else if (family == 0x0001) {
551 if (subtype == 0x0001)
552 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0001, workingPtr);
553 else if (subtype == 0x0003)
554 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0003, workingPtr);
555 else if (subtype == 0x0007)
556 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, 0x0001, 0x0007, workingPtr);
558 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
559 } else if (family == 0x000e) {
560 if (subtype == 0x0002)
561 workingPtr->handled = aim_chat_parse_infoupdate(sess, workingPtr);
562 else if (subtype == 0x0003)
563 workingPtr->handled = aim_chat_parse_joined(sess, workingPtr);
564 else if (subtype == 0x0004)
565 workingPtr->handled = aim_chat_parse_leave(sess, workingPtr);
566 else if (subtype == 0x0006)
567 workingPtr->handled = aim_chat_parse_incoming(sess, workingPtr);
569 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
571 printf("Chat: unknown snac %04x/%04x\n", family, subtype);
572 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_DEFAULT, workingPtr);
576 case AIM_CONN_TYPE_RENDEZVOUS: {
577 /* make sure that we only get OFT frames on these connections */
578 if (workingPtr->hdrtype != AIM_FRAMETYPE_OFT) {
579 printf("faim: internal error: non-OFT frames on OFT connection\n");
580 workingPtr->handled = 1; /* get rid of it */
584 /* XXX: implement this */
585 printf("faim: OFT frame!\n");
590 printf("\ninternal error: unknown connection type (very bad.) (type = %d, fd = %d, commandlen = %02x)\n\n", workingPtr->conn->type, workingPtr->conn->fd, workingPtr->commandlen);
591 workingPtr->handled = aim_callhandler_noparam(sess, workingPtr->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, workingPtr);
598 * This doesn't have to be called here. It could easily be done
599 * by a seperate thread or something. It's an administrative operation,
600 * and can take a while. Though the less you call it the less memory
603 aim_purge_rxqueue(sess);
608 int aim_parsemotd_middle(struct aim_session_t *sess,
609 struct command_rx_struct *command, ...)
611 rxcallback_t userfunc = NULL;
614 struct aim_tlvlist_t *tlvlist;
620 id = aimutil_get16(command->data+10);
625 tlvlist = aim_readtlvchain(command->data+12, command->commandlen-12);
627 msg = aim_gettlv_str(tlvlist, 0x000b, 1);
629 userfunc = aim_callhandler(command->conn, 0x0001, 0x0013);
631 ret = userfunc(sess, command, id, msg);
633 aim_freetlvchain(&tlvlist);
639 int aim_handleredirect_middle(struct aim_session_t *sess,
640 struct command_rx_struct *command, ...)
642 struct aim_tlv_t *tmptlv = NULL;
643 int serviceid = 0x00;
644 char cookie[AIM_COOKIELEN];
646 rxcallback_t userfunc = NULL;
647 struct aim_tlvlist_t *tlvlist;
650 if (!(tlvlist = aim_readtlvchain(command->data+10, command->commandlen-10)))
652 printf("libfaim: major bug: unable to read tlvchain from redirect\n");
656 if (!(tmptlv = aim_gettlv(tlvlist, 0x000d, 1)))
658 printf("libfaim: major bug: no service ID in tlvchain from redirect\n");
659 aim_freetlvchain(&tlvlist);
662 serviceid = aimutil_get16(tmptlv->value);
664 if (!(ip = aim_gettlv_str(tlvlist, 0x0005, 1)))
666 printf("libfaim: major bug: no IP in tlvchain from redirect (service 0x%02x)\n", serviceid);
667 aim_freetlvchain(&tlvlist);
671 if (!(tmptlv = aim_gettlv(tlvlist, 0x0006, 1)))
673 printf("libfaim: major bug: no cookie in tlvchain from redirect (service 0x%02x)\n", serviceid);
674 aim_freetlvchain(&tlvlist);
677 memcpy(cookie, tmptlv->value, AIM_COOKIELEN);
679 if (serviceid == AIM_CONN_TYPE_CHAT)
685 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
687 ret = userfunc(sess, command, serviceid, ip, cookie, sess->pendingjoin);
688 free(sess->pendingjoin);
689 sess->pendingjoin = NULL;
693 userfunc = aim_callhandler(command->conn, 0x0001, 0x0005);
695 ret = userfunc(sess, command, serviceid, ip, cookie);
699 * XXX: Is there a leak here? Where does IP get freed?
701 aim_freetlvchain(&tlvlist);
706 int aim_parse_unknown(struct aim_session_t *sess,
707 struct command_rx_struct *command, ...)
711 faimdprintf(1, "\nRecieved unknown packet:");
713 for (i = 0; i < command->commandlen; i++)
716 faimdprintf(1, "\n\t");
718 faimdprintf(1, "0x%2x ", command->data[i]);
721 faimdprintf(1, "\n\n");
727 int aim_negchan_middle(struct aim_session_t *sess,
728 struct command_rx_struct *command)
730 struct aim_tlvlist_t *tlvlist;
732 unsigned short code = 0;
733 struct aim_tlv_t *tmptlv;
734 rxcallback_t userfunc = NULL;
737 tlvlist = aim_readtlvchain(command->data, command->commandlen);
739 if ((tmptlv = aim_gettlv(tlvlist, 0x0009, 1)))
740 code = aimutil_get16(tmptlv->value);
742 if ((tmptlv = aim_gettlv(tlvlist, 0x000b, 1)))
743 msg = aim_gettlv_str(tlvlist, 0x000b, 1);
745 userfunc = aim_callhandler(command->conn,
746 AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNERR);
748 ret = userfunc(sess, command, code, msg);
750 aim_freetlvchain(&tlvlist);
757 * aim_parse_generalerrs()
759 * Middle handler for 0x0001 snac of each family.
762 int aim_parse_generalerrs(struct aim_session_t *sess,
763 struct command_rx_struct *command, ...)
768 family = aimutil_get16(command->data+0);
769 subtype= aimutil_get16(command->data+2);
775 return aim_callhandler_noparam(sess, command->conn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_UNKNOWN, command);