/* When done, this function also has the job to unref the dialog as removed
* from timer list. This must be done in all cases!!
*/
void dlg_ontimeout( struct dlg_tl *tl)
{
struct dlg_cell *dlg;
int new_state;
int old_state;
int unref;
dlg = get_dlg_tl_payload(tl);
LM_DBG("byeontimeout ? %d , state = %d\n",dlg->flags,dlg->state);
if ( (dlg->flags&DLG_FLAG_BYEONTIMEOUT) &&
(dlg->state==DLG_STATE_CONFIRMED_NA || dlg->state==DLG_STATE_CONFIRMED)) {
init_dlg_term_reason(dlg,"Lifetime Timeout",sizeof("Lifetime Timeout")-1);
/* we just send the BYEs in both directions */
dlg_end_dlg( dlg, NULL);
/* dialog is no longer refed by timer; from now one it is refed
by the send_bye functions */
unref_dlg( dlg, 1);
/* is not 100% sure, but do it */
if_update_stat( dlg_enable_stats, expired_dlgs, 1);
return ;
}
next_state_dlg( dlg, DLG_EVENT_REQBYE, &old_state, &new_state, &unref);
if (new_state==DLG_STATE_DELETED && old_state!=DLG_STATE_DELETED) {
LM_DBG("timeout for dlg with CallID '%.*s' and tags '%.*s' '%.*s'\n",
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
/*destroy linkers */
destroy_linkers(dlg->profile_links);
dlg->profile_links = NULL;
/* dialog timeout */
run_dlg_callbacks( DLGCB_EXPIRED, dlg, 0, DLG_DIR_NONE, 0);
/* delete the dialog from DB */
if (should_remove_dlg_db())
remove_dialog_from_db(dlg);
unref_dlg(dlg, unref + 1 /*timer list*/);
if_update_stat( dlg_enable_stats, expired_dlgs, 1);
if_update_stat( dlg_enable_stats, active_dlgs, -1);
} else {
unref_dlg(dlg, 1 /*just timer list*/);
}
return;
}
static void dual_bye_event(struct dlg_cell* dlg, struct sip_msg *req, int extra_unref)
{
int event, old_state, new_state, unref, ret;
struct dlg_cell *curr;
event = DLG_EVENT_REQBYE;
last_dst_leg = dlg->legs_no[DLG_LEG_200OK];
next_state_dlg(dlg, event, DLG_DIR_DOWNSTREAM, &old_state, &new_state,
&unref, 0);
unref += extra_unref;
if(new_state == DLG_STATE_DELETED && old_state != DLG_STATE_DELETED){
LM_DBG("removing dialog with h_entry %u and h_id %u\n",
dlg->h_entry, dlg->h_id);
/*destroy linkers */
dlg_lock_dlg(dlg);
destroy_linkers(dlg->profile_links, 0);
dlg->profile_links = NULL;
dlg_unlock_dlg(dlg);
/* remove from timer */
ret = remove_dlg_timer(&dlg->tl);
if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg_leg_print_info( dlg, DLG_CALLER_LEG, tag),
dlg_leg_print_info( dlg, callee_idx(dlg), tag));
} else if (ret > 0) {
LM_DBG("dlg already expired (not in timer list) %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg_leg_print_info( dlg, DLG_CALLER_LEG, tag),
dlg_leg_print_info( dlg, callee_idx(dlg), tag));
} else {
/* successfully removed from timer list */
unref++;
}
curr = current_dlg_pointer;
current_dlg_pointer = dlg;
/* dialog terminated (BYE) */
run_dlg_callbacks( DLGCB_TERMINATED, dlg, req, DLG_DIR_NONE, 0);
current_dlg_pointer = curr;
LM_DBG("first final reply\n");
/* derefering the dialog */
unref_dlg(dlg, unref);
if_update_stat( dlg_enable_stats, active_dlgs, -1);
}
if(new_state == DLG_STATE_DELETED && old_state == DLG_STATE_DELETED ) {
/* trash the dialog from DB and memory */
LM_DBG("second final reply\n");
/* delete the dialog from DB */
if (should_remove_dlg_db())
remove_dialog_from_db(dlg);
/* force delete from mem */
unref_dlg(dlg, unref);
}
}
static void dual_bye_event(struct dlg_cell* dlg, struct sip_msg *req, int extra_unref)
{
int event, old_state, new_state, unref, ret;
struct sip_msg *fake_msg=NULL;
context_p old_ctx;
context_p *new_ctx;
event = DLG_EVENT_REQBYE;
next_state_dlg(dlg, event, DLG_DIR_DOWNSTREAM, &old_state, &new_state,
&unref, dlg->legs_no[DLG_LEG_200OK], 0);
unref += extra_unref;
if(new_state == DLG_STATE_DELETED && old_state != DLG_STATE_DELETED){
LM_DBG("removing dialog with h_entry %u and h_id %u\n",
dlg->h_entry, dlg->h_id);
/*destroy linkers */
dlg_lock_dlg(dlg);
destroy_linkers(dlg->profile_links, 0);
dlg->profile_links = NULL;
dlg_unlock_dlg(dlg);
/* remove from timer */
ret = remove_dlg_timer(&dlg->tl);
if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg_leg_print_info( dlg, DLG_CALLER_LEG, tag),
dlg_leg_print_info( dlg, callee_idx(dlg), tag));
} else if (ret > 0) {
LM_DBG("dlg already expired (not in timer list) %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg_leg_print_info( dlg, DLG_CALLER_LEG, tag),
dlg_leg_print_info( dlg, callee_idx(dlg), tag));
} else {
/* successfully removed from timer list */
unref++;
}
if (req==NULL) {
/* set new msg & processing context */
if (push_new_processing_context( dlg, &old_ctx, &new_ctx, &fake_msg)==0) {
/* dialog terminated (BYE) */
run_dlg_callbacks( DLGCB_TERMINATED, dlg, fake_msg,
DLG_DIR_NONE, NULL, 0);
/* reset the processing context */
if (current_processing_ctx == NULL)
*new_ctx = NULL;
else
context_destroy(CONTEXT_GLOBAL, *new_ctx);
current_processing_ctx = old_ctx;
} /* no CB run in case of failure FIXME */
} else {
/* we should have the msg and context from upper levels */
/* dialog terminated (BYE) */
run_dlg_callbacks( DLGCB_TERMINATED, dlg, req,
DLG_DIR_NONE, NULL, 0);
}
LM_DBG("first final reply\n");
/* derefering the dialog */
unref_dlg(dlg, unref);
if_update_stat( dlg_enable_stats, active_dlgs, -1);
}
if(new_state == DLG_STATE_DELETED && old_state == DLG_STATE_DELETED ) {
/* trash the dialog from DB and memory */
LM_DBG("second final reply\n");
/* delete the dialog from DB */
if (should_remove_dlg_db())
remove_dialog_from_db(dlg);
/* force delete from mem */
unref_dlg(dlg, unref);
}
}
void dlg_onroute(struct sip_msg* req, str *route_params, void *param)
{
struct dlg_cell *dlg;
str val = {0,0};
str callid;
str ftag;
str ttag;
int h_entry;
int h_id;
int new_state;
int old_state;
int unref;
int event;
int timeout;
unsigned int update_val;
unsigned int dir,dst_leg,src_leg;
int ret = 0,ok = 1;
struct dlg_entry *d_entry;
str *msg_cseq;
char *final_cseq;
/* as this callback is triggered from loose_route, which can be
accidentaly called more than once from script, we need to be sure
we do this only once !*/
if (current_dlg_pointer)
return;
/* skip initial requests - they may end up here because of the
* preloaded route */
if ( (!req->to && parse_headers(req, HDR_TO_F,0)<0) || !req->to ) {
LM_ERR("bad request or missing TO hdr :-/\n");
return;
}
if ( get_to(req)->tag_value.len==0 )
return;
dlg = 0;
dir = DLG_DIR_NONE;
dst_leg = -1;
/* From RR callback, param will be NULL
* From match_dialog, param might have a value, if we
* are in the topology hiding case & we were able to extract the
* DID from the R-URI */
if (param)
val = *((str *)param);
if ( seq_match_mode!=SEQ_MATCH_NO_ID ) {
if( val.s == NULL && d_rrb.get_route_param( req, &rr_param, &val)!=0) {
LM_DBG("Route param '%.*s' not found\n", rr_param.len,rr_param.s);
if (seq_match_mode==SEQ_MATCH_STRICT_ID )
return;
} else {
LM_DBG("route param is '%.*s' (len=%d)\n",val.len,val.s,val.len);
if ( parse_dlg_rr_param( val.s, val.s+val.len, &h_entry, &h_id)<0 )
return;
dlg = lookup_dlg( h_entry, h_id);
if (dlg==0) {
LM_DBG("unable to find dialog for %.*s "
"with route param '%.*s'\n",
req->first_line.u.request.method.len,
req->first_line.u.request.method.s,
val.len,val.s);
} else {
/* lookup_dlg has incremented the ref count by 1 */
if (pre_match_parse( req, &callid, &ftag, &ttag)<0) {
unref_dlg(dlg, 1);
return;
}
if (match_dialog(dlg,&callid,&ftag,&ttag,&dir, &dst_leg )==0){
LM_WARN("tight matching failed for %.*s with "
"callid='%.*s'/%d,"
" ftag='%.*s'/%d, ttag='%.*s'/%d and direction=%d\n",
req->first_line.u.request.method.len,
req->first_line.u.request.method.s,
callid.len, callid.s, callid.len,
ftag.len, ftag.s, ftag.len,
ttag.len, ttag.s, ttag.len, dir);
LM_WARN("dialog identification elements are "
"callid='%.*s'/%d, "
"caller tag='%.*s'/%d, callee tag='%.*s'/%d\n",
dlg->callid.len, dlg->callid.s, dlg->callid.len,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s),
dlg->legs[callee_idx(dlg)].tag.len);
unref_dlg(dlg, 1);
dlg = NULL;
}
}
if (dlg==NULL && seq_match_mode==SEQ_MATCH_STRICT_ID )
return;
}
}
if (dlg==0) {
if (pre_match_parse( req, &callid, &ftag, &ttag)<0)
return;
/* TODO - try to use the RR dir detection to speed up here the
* search -bogdan */
dlg = get_dlg(&callid, &ftag, &ttag, &dir, &dst_leg);
if (!dlg){
LM_DBG("Callid '%.*s' not found\n",
req->callid->body.len, req->callid->body.s);
return;
}
}
/* run state machine */
switch ( req->first_line.u.request.method_value ) {
case METHOD_PRACK:
event = DLG_EVENT_REQPRACK; break;
case METHOD_ACK:
event = DLG_EVENT_REQACK; break;
case METHOD_BYE:
event = DLG_EVENT_REQBYE; break;
default:
event = DLG_EVENT_REQ;
}
/* save last_dst_leg before running state machine
* helpful for logging various bogus cases according to the RFC */
last_dst_leg = dst_leg;
next_state_dlg( dlg, event, &old_state, &new_state, &unref);
/* set current dialog - it will keep a ref! */
set_current_dialog(dlg);
log_bogus_dst_leg(dlg);
d_entry = &(d_table->entries[dlg->h_entry]);
if(dlg->flags & DLG_FLAG_TOPHIDING) {
dlg_th_onroute(dlg, req, dir);
}
/* run actions for the transition */
if (event==DLG_EVENT_REQBYE && new_state==DLG_STATE_DELETED &&
old_state!=DLG_STATE_DELETED) {
/*destroy linkers */
destroy_linkers(dlg->profile_links);
dlg->profile_links = NULL;
if (!dlg->terminate_reason.s) {
if (last_dst_leg == 0)
init_dlg_term_reason(dlg,"Upstream BYE",sizeof("Upstream BYE")-1);
else
init_dlg_term_reason(dlg,"Downstream BYE",sizeof("Downstream BYE")-1);
}
LM_DBG("BYE successfully processed - dst_leg = %d\n",last_dst_leg);
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
dlg_lock (d_table,d_entry);
if (dlg->legs[dst_leg].last_gen_cseq) {
update_val = ++(dlg->legs[dst_leg].last_gen_cseq);
dlg_unlock (d_table,d_entry);
if (update_msg_cseq(req,0,update_val) != 0)
LM_ERR("failed to update BYE msg cseq\n");
msg_cseq = &((struct cseq_body *)req->cseq->parsed)->number;
final_cseq = shm_malloc(msg_cseq->len + 1);
if (final_cseq == 0) {
LM_ERR("no more shm mem\n");
goto after_unlock5;
}
memcpy(final_cseq,msg_cseq->s,msg_cseq->len);
final_cseq[msg_cseq->len] = 0;
if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
fix_final_cseq,
(void*)final_cseq, 0)<0 ) {
LM_ERR("failed to register TMCB (2)\n");
}
}
else
dlg_unlock (d_table,d_entry);
}
after_unlock5:
/* remove from timer */
ret = remove_dlg_timer(&dlg->tl);
if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
} else if (ret > 0) {
LM_DBG("dlg expired (not in timer list) on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
} else {
/* dialog sucessfully removed from timer -> unref */
unref++;
}
/* dialog terminated (BYE) */
run_dlg_callbacks( DLGCB_TERMINATED, dlg, req, dir, 0);
/* delete the dialog from DB */
if (should_remove_dlg_db())
remove_dialog_from_db(dlg);
/* destroy dialog */
unref_dlg(dlg, unref);
if_update_stat( dlg_enable_stats, active_dlgs, -1);
return;
}
if ( (event==DLG_EVENT_REQ || event==DLG_EVENT_REQACK)
&& new_state==DLG_STATE_CONFIRMED) {
LM_DBG("sequential request successfully processed (dst_leg=%d)\n",
dst_leg);
/* within dialog request */
run_dlg_callbacks( DLGCB_REQ_WITHIN, dlg, req, dir, 0);
timeout = get_dlg_timeout_update(req);
/* update timer during sequential request? */
if (timeout != 0) {
dlg->lifetime = timeout;
if (update_dlg_timer( &dlg->tl, dlg->lifetime )==-1)
LM_ERR("failed to update dialog lifetime\n");
}
if ( event!=DLG_EVENT_REQACK ) {
if (dst_leg==-1 || switch_cseqs(dlg, dst_leg) != 0 ||
update_cseqs(dlg,req,dst_leg,0)) {
ok = 0;
LM_ERR("cseqs update failed on leg=%d\n",dst_leg);
}
if (req->first_line.u.request.method_value == METHOD_INVITE) {
if (dst_leg == DLG_CALLER_LEG)
src_leg = callee_idx(dlg);
else
src_leg = DLG_CALLER_LEG;
if (update_cseqs(dlg,req,src_leg,1) != 0) {
ok=0;
LM_ERR("failed to update inv cseq on leg %d\n",src_leg);
}
}
if (dlg->flags & DLG_FLAG_PING_CALLER ||
dlg->flags & DLG_FLAG_PING_CALLEE) {
dlg_lock (d_table, d_entry);
if (dlg->legs[dst_leg].last_gen_cseq) {
update_val = ++(dlg->legs[dst_leg].last_gen_cseq);
dlg_unlock( d_table, d_entry );
if (update_msg_cseq(req,0,update_val) != 0) {
LM_ERR("failed to update sequential request msg cseq\n");
ok = 0;
}
}
else
dlg_unlock( d_table, d_entry );
}
if (ok) {
dlg->flags |= DLG_FLAG_CHANGED;
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
if (replication_dests)
replicate_dialog_updated(dlg);
}
}
else
{
if (dlg->flags & DLG_FLAG_PING_CALLER ||
dlg->flags & DLG_FLAG_PING_CALLEE) {
dlg_lock (d_table, d_entry);
if (dlg->legs[dst_leg].last_gen_cseq) {
update_val = dlg->legs[dst_leg].last_gen_cseq;
dlg_unlock( d_table, d_entry );
if (update_msg_cseq(req,0,update_val) != 0) {
LM_ERR("failed to update ACK msg cseq\n");
}
}
else
dlg_unlock( d_table, d_entry );
}
}
if ( event!=DLG_EVENT_REQACK) {
/* register callback for the replies of this request */
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
dlg_lock( d_table, d_entry);
if (dlg->legs[dst_leg].last_gen_cseq) {
/* ref the dialog as registered into the transaction callback.
* unref will be done when the callback will be destroyed */
ref_dlg_unsafe( dlg, 1);
dlg_unlock( d_table,d_entry);
if(parse_headers(req, HDR_CSEQ_F, 0) <0 ) {
LM_ERR("failed to parse cseq header \n");
unref_dlg(dlg,1);
goto early_check;
}
msg_cseq = &((struct cseq_body *)req->cseq->parsed)->number;
dlg_cseq_wrapper *wrap = shm_malloc(sizeof(dlg_cseq_wrapper) +
msg_cseq->len);
if (wrap == 0){
LM_ERR("No more shm mem\n");
unref_dlg(dlg, 1);
goto early_check;
}
wrap->dlg = dlg;
wrap->cseq.s = (char *)(wrap + 1);
wrap->cseq.len = msg_cseq->len;
memcpy(wrap->cseq.s,msg_cseq->s,msg_cseq->len);
if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
(dir==DLG_DIR_UPSTREAM)?dlg_seq_down_onreply_mod_cseq:dlg_seq_up_onreply_mod_cseq,
(void*)wrap, unreference_dialog_cseq)<0 ) {
LM_ERR("failed to register TMCB (2)\n");
unref_dlg( dlg , 1);
shm_free(wrap);
}
}
else {
/* dialog is in ping timer list
* but no pings have been generated yet */
dlg_unlock ( d_table, d_entry );
goto regular_indlg_req;
}
} else {
regular_indlg_req:
if (dlg->cbs.types & DLGCB_RESPONSE_WITHIN)
{
ref_dlg( dlg , 1);
if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
(dir==DLG_DIR_UPSTREAM)?dlg_seq_down_onreply:dlg_seq_up_onreply,
(void*)dlg, unreference_dialog)<0 ) {
LM_ERR("failed to register TMCB (2)\n");
unref_dlg( dlg , 1);
}
}
}
}
}
early_check:
if ( (event==DLG_EVENT_REQPRACK || event == DLG_EVENT_REQ)
&& new_state==DLG_STATE_EARLY) {
/* within dialog request */
run_dlg_callbacks( DLGCB_REQ_WITHIN, dlg, req, dir, 0);
LM_DBG("EARLY event %d successfully processed (dst_leg=%d)\n",event,dst_leg);
if (dst_leg==-1 || switch_cseqs(dlg, dst_leg) != 0 ||
update_cseqs(dlg,req,dst_leg,0))
LM_ERR("cseqs update failed on leg=%d\n",dst_leg);
}
if(new_state==DLG_STATE_CONFIRMED && old_state==DLG_STATE_CONFIRMED_NA){
dlg->flags |= DLG_FLAG_CHANGED;
if(dlg_db_mode == DB_MODE_REALTIME)
update_dialog_dbinfo(dlg);
if (replication_dests)
replicate_dialog_updated(dlg);
}
return;
}
