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/*
* jabberd - Jabber Open Source Server
* Copyright (c) 2002-2003 Jeremie Miller, Thomas Muldowney,
* Ryan Eatmon, Robert Norris
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
*/
#include "sm.h"
/** @file sm/dispatch.c
* @brief packet dispatcher
* @author Robert Norris
* $Date: 2005/09/09 05:31:04 $
* $Revision: 1.18 $
*/
/** main packet dispatcher */
void dispatch(sm_t sm, pkt_t pkt) {
user_t user;
mod_ret_t ret;
/* handle broadcasts */
if(pkt->rtype == route_BROADCAST) {
log_debug(ZONE, "can't handle broadcast routes (yet), dropping");
pkt_free(pkt);
return;
}
/* routing errors, add a im error */
if(pkt->rtype & route_ERROR) {
int i, aerror, stanza_err;
aerror = nad_find_attr(pkt->nad, 0, -1, "error", NULL);
stanza_err = stanza_err_REMOTE_SERVER_NOT_FOUND;
if(aerror >= 0) {
for(i=0; _stanza_errors[i].code != NULL; i++)
if(strncmp(_stanza_errors[i].code, NAD_AVAL(pkt->nad, aerror), NAD_AVAL_L(pkt->nad, aerror)) == 0) {
stanza_err = stanza_err_BAD_REQUEST + i;
break;
}
}
if(pkt_error(pkt, stanza_err) == NULL)
return;
}
/*
* - if its from the router (non-route) it goes straight to pkt_router
* - hand it to in_router chain
* - if its for the sm itself (no user), hand it to the pkt_sm chain
* - find the user
* - hand to pkt_user
*/
/* non route packets are special-purpose things from the router */
if(!(pkt->rtype & route_UNICAST)) {
ret = mm_pkt_router(pkt->sm->mm, pkt);
switch(ret) {
case mod_HANDLED:
break;
case mod_PASS:
default:
/* don't ever bounce these */
pkt_free(pkt);
break;
}
return;
}
/* preprocessing */
ret = mm_in_router(pkt->sm->mm, pkt);
switch(ret) {
case mod_HANDLED:
return;
case mod_PASS:
break;
default:
pkt_router(pkt_error(pkt, -ret));
return;
}
/* has to come from someone and be directed to someone */
if(pkt->from == NULL || pkt->to == NULL) {
pkt_router(pkt_error(pkt, stanza_err_BAD_REQUEST));
return;
}
/* packet is for the sm itself */
if(*pkt->to->node == '\0') {
ret = mm_pkt_sm(pkt->sm->mm, pkt);
switch(ret) {
case mod_HANDLED:
break;
case mod_PASS:
/* ignore IQ result packets that haven't been handled - XMPP 9.2.3.4 */
if(pkt->type == pkt_IQ_RESULT) {
pkt_free(pkt);
break;
} else
ret = -stanza_err_FEATURE_NOT_IMPLEMENTED;
default:
pkt_router(pkt_error(pkt, -ret));
break;
}
return;
}
/* get the user */
user = user_load(sm, pkt->to);
if(user == NULL) {
if(pkt->type & pkt_PRESENCE && pkt->type != pkt_PRESENCE_PROBE) {
pkt_free(pkt);
return;
}
if(pkt->type == pkt_PRESENCE_PROBE) {
pkt_router(pkt_create(pkt->sm, "presence", "unsubscribed", jid_full(pkt->from), jid_full(pkt->to)));
pkt_free(pkt);
return;
}
pkt_router(pkt_error(pkt, stanza_err_SERVICE_UNAVAILABLE));
return;
}
if (pkt->sm != NULL) {
ret = mm_pkt_user(pkt->sm->mm, user, pkt);
switch(ret) {
case mod_HANDLED:
break;
case mod_PASS:
/* ignore IQ result packets that haven't been handled - XMPP 9.2.3.4 */
if(pkt->type == pkt_IQ_RESULT) {
pkt_free(pkt);
break;
} else
ret = -stanza_err_FEATURE_NOT_IMPLEMENTED;
default:
pkt_router(pkt_error(pkt, -ret));
break;
}
}
/* if they have no sessions, they were only loaded to do delivery, so free them */
if(user->sessions == NULL)
user_free(user);
}
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