int set_dlg_variable(struct dlg_cell *dlg, str *key, str *val)
{
int ret = -1;
if( !dlg || !key || key->len > strlen(key->s) || (val && val->len > strlen(val->s)))
{
LM_ERR("BUG - bad parameters\n");
return -1;
}
dlg_lock(d_table, &(d_table->entries[dlg->h_entry]));
ret = set_dlg_variable_unsafe(dlg, key, val);
if(ret!= 0)
goto done;
dlg->dflags |= DLG_FLAG_CHANGED_VARS;
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
print_lists(dlg);
return 0;
done:
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
return ret;
}
int set_dlg_variable(struct dlg_cell *dlg, str *key, str *val)
{
if( !dlg || !key || key->len > strlen(key->s) || (val && val->len > strlen(val->s)))
{
LM_ERR("BUG - bad parameters\n");
return -1;
}
dlg_lock(d_table, &(d_table->entries[dlg->h_entry]));
if( !val)
{
if (set_dlg_variable_unsafe(dlg, key, NULL)!=0) {
LM_ERR("failed to delete dialog variable <%.*s>\n", key->len,key->s);
goto error;
}
} else {
if (set_dlg_variable_unsafe(dlg, key, val)!=0) {
LM_ERR("failed to store dialog values <%.*s>\n",key->len,key->s);
goto error;
}
}
dlg->dflags &= DLG_FLAG_CHANGED_VARS;
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
print_lists(dlg);
return 0;
error:
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
return -1;
}
int pv_set_dlg_variable(struct sip_msg* msg, pv_param_t *param, int op, pv_value_t *val)
{
dlg_cell_t *dlg = NULL;
int ret = -1;
if (param==NULL || param->pvn.type!=PV_NAME_INTSTR
|| param->pvn.u.isname.type!=AVP_NAME_STR
|| param->pvn.u.isname.name.s.s==NULL ) {
LM_CRIT("BUG - bad parameters\n");
goto error;
}
/* Retrieve the dialog for current message */
dlg=dlg_get_msg_dialog( msg);
if (dlg) {
/* Lock the dialog */
dlg_lock(d_table, &(d_table->entries[dlg->h_entry]));
} else {
/* Verify the local list */
get_local_varlist_pointer(msg, 0);
}
if (val==NULL || val->flags&(PV_VAL_NONE|PV_VAL_NULL|PV_VAL_EMPTY)) {
/* if NULL, remove the value */
ret = set_dlg_variable_unsafe(dlg, ¶m->pvn.u.isname.name.s, NULL);
if(ret!= 0) {
/* unlock dialog */
if (dlg) {
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
dlg_release(dlg);
}
return ret;
}
} else {
/* if value, must be string */
if ( !(val->flags&PV_VAL_STR)) {
LM_ERR("non-string values are not supported\n");
/* unlock dialog */
if (dlg) dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
goto error;
}
ret = set_dlg_variable_unsafe(dlg, ¶m->pvn.u.isname.name.s, &val->rs);
if(ret!= 0) {
/* unlock dialog */
if (dlg) dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
goto error;
}
}
/* unlock dialog */
if (dlg) {
dlg->dflags |= DLG_FLAG_CHANGED_VARS;
dlg_unlock(d_table, &(d_table->entries[dlg->h_entry]));
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
}
print_lists(dlg);
dlg_release(dlg);
return 0;
error:
dlg_release(dlg);
return -1;
}
/*!
* \brief Function that is registered as TM callback and called on replies
*
* Function that is registered as TM callback and called on replies. It
* parses the reply and set the appropriate event. This is then used to
* update the dialog state, run eventual dialog callbacks and save or
* update the necessary informations about the dialog.
* \see next_state_dlg
* \param t transaction, unused
* \param type type of the entered callback
* \param param saved dialog structure in the callback
*/
static void dlg_onreply(struct cell* t, int type, struct tmcb_params *param)
{
dlg_cell_t *dlg = NULL;
dlg_iuid_t *iuid = NULL;
int new_state, old_state, unref, event;
str tag;
sip_msg_t *req = param->req;
sip_msg_t *rpl = param->rpl;
if (shutdown_done)
return;
iuid = (dlg_iuid_t*)(*param->param);
dlg = dlg_get_by_iuid(iuid);
if(dlg==0)
return;
unref = 0;
if (type & (TMCB_RESPONSE_IN|TMCB_ON_FAILURE)) {
/* Set the dialog context so it is available in onreply_route and failure_route*/
set_current_dialog(req, dlg);
dlg_set_ctx_iuid(dlg);
goto done;
}
if (type==TMCB_RESPONSE_FWDED) {
/* The state does not change, but the msg is mutable in this callback*/
run_dlg_callbacks(DLGCB_RESPONSE_FWDED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
goto done;
}
if (type==TMCB_DESTROY)
event = DLG_EVENT_TDEL;
else if (param->code<200)
event = DLG_EVENT_RPL1xx;
else if (param->code<300)
event = DLG_EVENT_RPL2xx;
else
event = DLG_EVENT_RPL3xx;
next_state_dlg( dlg, event, &old_state, &new_state, &unref);
dlg_run_event_route(dlg, (rpl==FAKED_REPLY)?NULL:rpl, old_state, new_state);
if (new_state==DLG_STATE_EARLY) {
run_dlg_callbacks(DLGCB_EARLY, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
if (old_state!=DLG_STATE_EARLY)
if_update_stat(dlg_enable_stats, early_dlgs, 1);
goto done;
}
if (new_state==DLG_STATE_CONFIRMED_NA &&
old_state!=DLG_STATE_CONFIRMED_NA && old_state!=DLG_STATE_CONFIRMED ) {
LM_DBG("dialog %p confirmed (ACK pending)\n",dlg);
if (rpl != FAKED_REPLY) {
/* get to tag*/
if ( !rpl->to && ((parse_headers(rpl, HDR_TO_F,0)<0)
|| !rpl->to) ) {
LM_ERR("bad reply or missing TO hdr :-/\n");
tag.s = 0;
tag.len = 0;
} else {
tag = get_to(rpl)->tag_value;
if (tag.s==0 || tag.len==0) {
LM_ERR("missing TAG param in TO hdr :-/\n");
tag.s = 0;
tag.len = 0;
}
}
/* save callee's tag, cseq, contact and record route*/
if (populate_leg_info( dlg, rpl, t, DLG_CALLEE_LEG, &tag) !=0) {
LM_ERR("could not add further info to the dialog\n");
}
} else {
LM_ERR("Faked reply!\n");
}
/* set start time */
dlg->start_ts = (unsigned int)(time(0));
/* save the settings to the database,
* if realtime saving mode configured- save dialog now
* else: the next time the timer will fire the update*/
dlg->dflags |= DLG_FLAG_NEW;
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
if (0 != insert_dlg_timer( &dlg->tl, dlg->lifetime )) {
LM_CRIT("Unable to insert dlg %p [%u:%u] on event %d [%d->%d] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id, event, old_state, new_state,
dlg->callid.len, dlg->callid.s,
dlg->tag[DLG_CALLER_LEG].len, dlg->tag[DLG_CALLER_LEG].s,
dlg->tag[DLG_CALLEE_LEG].len, dlg->tag[DLG_CALLEE_LEG].s);
} else {
/* dialog pointer inserted in timer list */
dlg_ref(dlg, 1);
}
/* dialog confirmed (ACK pending) */
run_dlg_callbacks( DLGCB_CONFIRMED_NA, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
if (old_state==DLG_STATE_EARLY)
if_update_stat(dlg_enable_stats, early_dlgs, -1);
if (unref) dlg_unref(dlg, unref);
if_update_stat(dlg_enable_stats, active_dlgs, 1);
goto done;
}
if ( new_state==DLG_STATE_DELETED
&& (old_state==DLG_STATE_UNCONFIRMED
|| old_state==DLG_STATE_EARLY) ) {
LM_DBG("dialog %p failed (negative reply)\n", dlg);
/* dialog setup not completed (3456XX) */
run_dlg_callbacks( DLGCB_FAILED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
if(dlg_wait_ack==1)
dlg_set_tm_waitack(t, dlg);
/* do unref */
if (unref)
dlg_unref(dlg, unref);
if (old_state==DLG_STATE_EARLY)
if_update_stat(dlg_enable_stats, early_dlgs, -1);
if_update_stat(dlg_enable_stats, failed_dlgs, 1);
goto done;
}
if (unref) dlg_unref(dlg, unref);
done:
/* unref due to dlg_get_by_iuid() */
dlg_release(dlg);
return;
}
/*!
* \brief Function that is registered as RR callback for dialog tracking
*
* Function that is registered as RR callback for dialog tracking. It
* sets the appropriate events after the SIP method and run the state
* machine to update the dialog state. It updates then the saved
* dialogs and also the statistics.
* \param req SIP request
* \param route_params record-route parameter
* \param param unused
*/
void dlg_onroute(struct sip_msg* req, str *route_params, void *param)
{
dlg_cell_t *dlg;
dlg_iuid_t *iuid;
str val, callid, ftag, ttag;
int h_entry, h_id, new_state, old_state, unref, event, timeout, reset;
unsigned int dir;
int ret = 0;
dlg = dlg_get_ctx_dialog();
if (dlg!=NULL) {
dlg_release(dlg);
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;
if ( seq_match_mode!=SEQ_MATCH_NO_ID ) {
if( 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 = dlg_lookup(h_entry, h_id);
if (dlg==0) {
LM_WARN("unable to find dialog for %.*s "
"with route param '%.*s' [%u:%u]\n",
req->first_line.u.request.method.len,
req->first_line.u.request.method.s,
val.len,val.s, h_entry, h_id);
if (seq_match_mode==SEQ_MATCH_STRICT_ID )
return;
} else {
if (pre_match_parse( req, &callid, &ftag, &ttag, 1)<0) {
// lookup_dlg has incremented the ref count by 1
dlg_release(dlg);
return;
}
if (match_dialog( dlg, &callid, &ftag, &ttag, &dir )==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->tag[DLG_CALLER_LEG].len, dlg->tag[DLG_CALLER_LEG].s,
dlg->tag[DLG_CALLER_LEG].len,
dlg->tag[DLG_CALLEE_LEG].len, dlg->tag[DLG_CALLEE_LEG].s,
dlg->tag[DLG_CALLEE_LEG].len);
// lookup_dlg has incremented the ref count by 1
dlg_release(dlg);
// Reset variables in order to do a lookup based on SIP-Elements.
dlg = 0;
dir = DLG_DIR_NONE;
if (seq_match_mode==SEQ_MATCH_STRICT_ID )
return;
}
}
}
}
if (dlg==0) {
if (pre_match_parse( req, &callid, &ftag, &ttag, 1)<0)
return;
/* TODO - try to use the RR dir detection to speed up here the
* search -bogdan */
dlg = get_dlg(&callid, &ftag, &ttag, &dir);
if (dlg==0){
LM_DBG("Callid '%.*s' not found\n",
req->callid->body.len, req->callid->body.s);
return;
}
}
/* set current dialog - re-use ref increment from dlg_get() above */
set_current_dialog( req, dlg);
_dlg_ctx.iuid.h_entry = dlg->h_entry;
_dlg_ctx.iuid.h_id = dlg->h_id;
if (req->first_line.u.request.method_value != METHOD_ACK) {
iuid = dlg_get_iuid_shm_clone(dlg);
if(iuid!=NULL)
{
/* register callback for the replies of this request */
if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_IN|TMCB_ON_FAILURE,
dlg_onreply, (void*)iuid, dlg_iuid_sfree)<0 ) {
LM_ERR("failed to register TMCB (3)\n");
shm_free(iuid);
}
iuid = NULL;
}
}
/* 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;
}
next_state_dlg( dlg, event, &old_state, &new_state, &unref);
CURR_DLG_ID = req->id;
CURR_DLG_LIFETIME = (unsigned int)(time(0))-dlg->start_ts;
CURR_DLG_STATUS = new_state;
dlg_run_event_route(dlg, req, old_state, new_state);
/* delay deletion of dialog until transaction has died off in order
* to absorb in-air messages */
if (new_state==DLG_STATE_DELETED && old_state!=DLG_STATE_DELETED) {
iuid = dlg_get_iuid_shm_clone(dlg);
if(iuid!=NULL) {
if ( d_tmb.register_tmcb(req, NULL, TMCB_DESTROY,
unref_dlg_from_cb, (void*)iuid, dlg_iuid_sfree)<0 ) {
LM_ERR("failed to register deletion delay function\n");
shm_free(iuid);
} else {
dlg_ref(dlg, 1);
}
}
}
if (new_state==DLG_STATE_CONFIRMED && old_state!=DLG_STATE_CONFIRMED)
dlg_ka_add(dlg);
/* run actions for the transition */
if (event==DLG_EVENT_REQBYE && new_state==DLG_STATE_DELETED &&
old_state!=DLG_STATE_DELETED) {
LM_DBG("BYE successfully processed\n");
/* remove from timer */
ret = remove_dialog_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->tag[DLG_CALLER_LEG].len, dlg->tag[DLG_CALLER_LEG].s,
dlg->tag[DLG_CALLEE_LEG].len, dlg->tag[DLG_CALLEE_LEG].s);
} else if (ret > 0) {
LM_WARN("inconsitent dlg timer data 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->tag[DLG_CALLER_LEG].len, dlg->tag[DLG_CALLER_LEG].s,
dlg->tag[DLG_CALLEE_LEG].len, dlg->tag[DLG_CALLEE_LEG].s);
} else {
/* one extra unref due to removal from timer list */
unref++;
}
/* dialog terminated (BYE) */
dlg_terminated( req, dlg, dir);
dlg_unref(dlg, unref);
_dlg_ctx.cpid = my_pid();
_dlg_ctx.expect_t = 1;
dlg_set_ctx_iuid(dlg);
if_update_stat( dlg_enable_stats, active_dlgs, -1);
goto done;
}
if ( (event==DLG_EVENT_REQ || event==DLG_EVENT_REQACK)
&& (new_state==DLG_STATE_CONFIRMED || new_state==DLG_STATE_EARLY)) {
timeout = get_dlg_timeout(req);
if (timeout!=default_timeout) {
dlg->lifetime = timeout;
}
reset = !((dlg->iflags & DLG_IFLAG_TIMER_NORESET) || dlg_timeout_noreset);
if ((new_state!=DLG_STATE_EARLY) && (old_state!=DLG_STATE_CONFIRMED || reset)) {
if (update_dlg_timer( &dlg->tl, dlg->lifetime )==-1) {
LM_ERR("failed to update dialog lifetime\n");
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
}
if(event != DLG_EVENT_REQACK) {
if(dlg_refresh_contacts(dlg, req, dir)!=0) {
LM_ERR("contacts update failed\n");
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
if(update_cseqs(dlg, req, dir)!=0) {
LM_ERR("cseqs update failed\n");
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
}
if(dlg_db_mode==DB_MODE_REALTIME && (dlg->dflags&DLG_FLAG_CHANGED)) {
update_dialog_dbinfo(dlg);
}
if (old_state==DLG_STATE_CONFIRMED_NA) {
LM_DBG("confirming ACK successfully processed\n");
/* confirming ACK request */
run_dlg_callbacks( DLGCB_CONFIRMED, dlg, req, NULL, dir, 0);
} else {
LM_DBG("sequential request successfully processed\n");
/* within dialog request */
run_dlg_callbacks( DLGCB_REQ_WITHIN, dlg, req, NULL, dir, 0);
if ( (event!=DLG_EVENT_REQACK) &&
(dlg->cbs.types)&DLGCB_RESPONSE_WITHIN ) {
iuid = dlg_get_iuid_shm_clone(dlg);
if(iuid!=NULL)
{
/* register callback for the replies of this request */
if ( d_tmb.register_tmcb( req, 0, TMCB_RESPONSE_FWDED,
(dir==DLG_DIR_UPSTREAM)?dlg_seq_down_onreply:
dlg_seq_up_onreply,
(void*)iuid, dlg_iuid_sfree)<0 ) {
LM_ERR("failed to register TMCB (2)\n");
shm_free(iuid);
}
}
}
}
}
if(new_state==DLG_STATE_CONFIRMED && old_state==DLG_STATE_CONFIRMED_NA){
dlg->dflags |= DLG_FLAG_CHANGED;
if(dlg_db_mode == DB_MODE_REALTIME)
update_dialog_dbinfo(dlg);
}
done:
dlg_release(dlg);
return;
}
/*!
* \brief Function that is registered as TM callback and called on replies
*
* Function that is registered as TM callback and called on replies. It
* parses the reply and set the appropriate event. This is then used to
* update the dialog state, run eventual dialog callbacks and save or
* update the necessary informations about the dialog.
* \see next_state_dlg
* \param t transaction, unused
* \param type type of the entered callback
* \param param saved dialog structure in the callback
*/
static void dlg_onreply(struct cell* t, int type, struct tmcb_params *param) {
struct dlg_cell *dlg;
struct dlg_cell_out *dlg_out = 0;
int new_state, old_state, unref, event;
str to_tag, to_uri;
struct sip_msg *req = param->req;
struct sip_msg *rpl = param->rpl;
struct dlg_entry_out* dlg_entry_out = 0;
if (t && t->fwded_totags)
LM_DBG("ONREPLY CALL_BACK from TM received and type is [%i] and TO is [%.*s]\n", type, t->fwded_totags->tag.len, t->fwded_totags->tag.s);
else
LM_DBG("ONREPLY CALL_BACK from TM received and type is [%i]\n", type);
dlg = (struct dlg_cell *) (*param->param);
if (shutdown_done || dlg == 0)
return;
if (t) {
dlg->transaction = t;
}
LM_DBG("DLG dialogid is entry:id [%i:%i]\n", dlg->h_entry, dlg->h_id);
if (type == TMCB_RESPONSE_FWDED) {
// The state does not change, but the msg is mutable in this callback
LM_DBG("TMCB_RESPONSE_FWDED from TM received");
run_dlg_callbacks(DLGCB_RESPONSE_FWDED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
return;
}
if (type == TMCB_RESPONSE_OUT) {
LM_DBG("TMCB_RESPONSE_OUT\n");
return;
}
if (type == TMCB_RESPONSE_READY) {
if (rpl == FAKED_REPLY) {
LM_DBG("Faked reply\n");
return;
}
// get to tag
LM_DBG("Extracting to-tag from reply");
if (!rpl->to && ((parse_headers(rpl, HDR_TO_F, 0) < 0) || !rpl->to)) {
LM_ERR("bad reply or missing TO hdr :-/\n");
to_tag.s = 0;
to_tag.len = 0;
} else {
//populate to uri for this branch.
to_uri = get_to(rpl)->uri;
to_tag = get_to(rpl)->tag_value;
if (to_tag.s == 0 || to_tag.len == 0) {
LM_ERR("missing TAG param in TO hdr :-/\n");
to_tag.s = 0;
to_tag.len = 0;
//Here we assume that the transaction module timer will remove any early dialogs
return;
}
}
LM_DBG("Got to-tag from response: %.*s \n", to_tag.len, to_tag.s);
}
if (type == TMCB_DESTROY)
event = DLG_EVENT_TDEL;
else if (param->code < 200)
event = DLG_EVENT_RPL1xx;
else if (param->code < 300)
event = DLG_EVENT_RPL2xx;
else
event = DLG_EVENT_RPL3xx;
LM_DBG("Calling next_state_dlg and event is %i\n", event);
next_state_dlg(dlg, event, &old_state, &new_state, &unref, &to_tag);
if (type == TMCB_RESPONSE_READY) {
LM_DBG("Checking if there is an existing dialog_out entry with same to-tag");
dlg_entry_out = &dlg->dlg_entry_out;
lock_get(dlg->dlg_out_entries_lock);
dlg_out = dlg_entry_out->first;
LM_DBG("Scanning dlg_entry_out list for dlg_out");
while (dlg_out) {
//Check if there is an already dialog_out entry with same To-tag
if (dlg_out->to_tag.len == to_tag.len &&
memcmp(dlg_out->to_tag.s, to_tag.s, dlg_out->to_tag.len) == 0) {
//Found a dialog_out entry with same to_tag!
LM_DBG("Found dlg_out for to-tag: %.*s\n", dlg_out->to_tag.len, dlg_out->to_tag.s);
break;
}
dlg_out = dlg_out->next;
}
lock_release(dlg->dlg_out_entries_lock);
if (!dlg_out) {
LM_DBG("No dlg_out entry found - creating a new dialog_out entry on dialog [%p]\n", dlg);
dlg_out = build_new_dlg_out(dlg, &to_uri, &to_tag);
link_dlg_out(dlg, dlg_out, 0);
/* save callee's cseq, caller cseq, callee contact and callee record route*/
if (populate_leg_info(dlg, rpl, t, DLG_CALLEE_LEG, &to_tag) != 0) {
LM_ERR("could not add further info to the dlg out\n");
}
if (!dlg_out) {
LM_ERR("failed to create new dialog out structure\n");
//TODO do something on this error!
}
} else {
//This dlg_out already exists, update cseq and contact if present
LM_DBG("dlg_out entry found - updating cseq's for dialog out [%p] for to-tag [%.*s] \n", dlg_out, dlg_out->to_tag.len, dlg_out->to_tag.s);
if ((!rpl->cseq && parse_headers(rpl, HDR_CSEQ_F, 0) < 0) || !rpl->cseq ||
!rpl->cseq->parsed) {
LM_ERR("bad sip message or missing CSeq hdr :-/\n");
}
dlg_update_cseq(dlg, DLG_CALLEE_LEG, &((get_cseq(rpl))->number), &(dlg_out->to_tag));
/* extract the contact address to update if present*/
if (!rpl->contact && (parse_headers(rpl, HDR_CONTACT_F, 0) < 0 || !rpl->contact)) {
LM_ERR("Can not update callee contact: bad sip message or missing Contact hdr\n");
}
else if (parse_contact(rpl->contact) < 0 ||
((contact_body_t *) rpl->contact->parsed)->contacts == NULL ||
((contact_body_t *) rpl->contact->parsed)->contacts->next != NULL) {
LM_ERR("Can not update callee contact: bad Contact HDR\n");
}
else
{
str contact;
contact = ((contact_body_t *) rpl->contact->parsed)->contacts->uri;
dlg_update_contact(dlg, DLG_CALLEE_LEG, &contact, &(dlg_out->to_tag));
}
}
}
if (new_state == DLG_STATE_EARLY) {
if ((dlg->dflags & DLG_FLAG_INSERTED) == 0) {
dlg->dflags |= DLG_FLAG_NEW;
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
if (dlg_db_mode == DB_MODE_REALTIME)
update_dialog_dbinfo(dlg);
run_dlg_callbacks(DLGCB_EARLY, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
return;
}
LM_DBG("new state is %i and old state is %i\n", new_state, old_state);
if ((new_state == DLG_STATE_CONFIRMED) && (event == DLG_EVENT_RPL2xx)) {
LM_DBG("dialog %p confirmed \n", dlg);
//Remove all the other entries in dialog_out for the same dialog after TM expires the transaction
//(not before in order to absorb late in-early-dialog requests).
//remove all other dlg_out objects
if (dlg_out) {
if (d_tmb.register_tmcb(req, NULL, TMCB_DESTROY, unlink_dlgouts_from_cb, (void*) dlg, NULL) < 0) {
LM_ERR("failed to register deletion delay function\n");
LM_DBG("Removing all other DLGs");
dlg_remove_dlg_out(dlg_out, dlg, 0);
} else {
//mark the outs for deletion
dlg_remove_dlg_out(dlg_out, dlg, 1);
}
} else {
LM_ERR("There is no dlg_out structure - this is bad\n");
//TODO: add error handling here
}
/* set start time */
dlg->start_ts = (unsigned int) (time(0));
/* save the settings to the database,
* if realtime saving mode configured- save dialog now
* else: the next time the timer will fire the update*/
if ((dlg->dflags & DLG_FLAG_INSERTED) == 0) {
dlg->dflags |= DLG_FLAG_NEW;
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
if (dlg_db_mode == DB_MODE_REALTIME)
update_dialog_dbinfo(dlg);
if (0 != insert_dlg_timer(&dlg->tl, dlg->lifetime)) {
LM_CRIT("Unable to insert dlg %p [%u:%u] on event %d [%d->%d] "
"with clid '%.*s' and tags '%.*s' \n",
dlg, dlg->h_entry, dlg->h_id, event, old_state, new_state,
dlg->callid.len, dlg->callid.s,
dlg->from_tag.len, dlg->from_tag.s);
} else {
ref_dlg(dlg, 1);
}
run_dlg_callbacks(DLGCB_CONFIRMED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
if (unref) unref_dlg(dlg, unref);
return;
}
if (new_state == DLG_STATE_CONCURRENTLY_CONFIRMED && (old_state == DLG_STATE_CONFIRMED || old_state == DLG_STATE_CONCURRENTLY_CONFIRMED)) {
//This is a concurrently confirmed call
LM_DBG("This is a concurrently confirmed call.");
//Create a new Dialog ID token “X”
//Not sure how to do this so just going to use existing Did and add an X character to it
str new_did;
create_concurrent_did(dlg, &new_did);
//assign new did to the created or updated dialog_out entry.
update_dlg_out_did(dlg_out, &new_did);
//Then, duplicate the dialog_in entry and set its Dialog ID value to new_did
//for now rather just create new dlg structure with the correct params - this should be fixed if future use requires
struct dlg_cell *new_dlg = 0;
new_dlg = build_new_dlg(&(dlg->callid) /*callid*/,
&(dlg->from_uri) /*from uri*/,
&(dlg->from_tag)/*from_tag*/,
&(dlg->req_uri) /*r-uri*/);
//assign new did to dlg_in
update_dlg_did(new_dlg, &new_did);
if (new_dlg == 0) {
LM_ERR("failed to create new dialog\n");
return;
}
//link the new_dlg with dlg_out object
link_dlg_out(new_dlg, dlg_out, 0);
}
if (old_state != DLG_STATE_DELETED && new_state == DLG_STATE_DELETED) {
LM_DBG("dialog %p failed (negative reply)\n", dlg);
/* dialog setup not completed (3456XX) */
run_dlg_callbacks(DLGCB_FAILED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
/* do unref */
if (unref)
unref_dlg(dlg, unref);
return;
}
if (unref) unref_dlg(dlg, unref);
return;
}
/*!
* \brief Function that is registered as RR callback for dialog tracking
*
* Function that is registered as RR callback for dialog tracking. It
* sets the appropriate events after the SIP method and run the state
* machine to update the dialog state. It updates then the saved
* dialogs and also the statistics.
* \param req SIP request
* \param route_params record-route parameter
* \param param unused
*/
void dlg_onroute(struct sip_msg* req, str *route_params, void *param) {
struct dlg_cell *dlg;
str val, callid, ftag, ttag;
int h_entry, h_id, new_state, old_state, unref, event, timeout;
unsigned int dir;
int ret = 0;
if (current_dlg_pointer != NULL)
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;
if (seq_match_mode != SEQ_MATCH_NO_ID) {
if (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_WARN("unable to find dialog for %.*s "
"with route param '%.*s' [%u:%u]\n",
req->first_line.u.request.method.len,
req->first_line.u.request.method.s,
val.len, val.s, h_entry, h_id);
if (seq_match_mode == SEQ_MATCH_STRICT_ID)
return;
} else {
if (pre_match_parse(req, &callid, &ftag, &ttag, 1) < 0) {
// lookup_dlg has incremented the ref count by 1
unref_dlg(dlg, 1);
return;
}
if (match_dialog(dlg, &callid, &ftag, &ttag, &dir) == 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\n",
dlg->callid.len, dlg->callid.s, dlg->callid.len,
dlg->from_tag.len, dlg->from_tag.s,
dlg->from_tag.len);
// lookup_dlg has incremented the ref count by 1
unref_dlg(dlg, 1);
// Reset variables in order to do a lookup based on SIP-Elements.
dlg = 0;
dir = DLG_DIR_NONE;
if (seq_match_mode == SEQ_MATCH_STRICT_ID)
return;
}
}
}
}
if (dlg == 0) {
if (pre_match_parse(req, &callid, &ftag, &ttag, 1) < 0)
return;
/* TODO - try to use the RR dir detection to speed up here the
* search -bogdan */
dlg = get_dlg(&callid, &ftag, &ttag, &dir);
if (!dlg) {
LM_DBG("Callid '%.*s' not found\n",
req->callid->body.len, req->callid->body.s);
return;
}
}
/* set current dialog - re-use ref increment from dlg_get() above */
set_current_dialog(req, dlg);
_dlg_ctx.dlg = dlg;
if (d_tmb.register_tmcb(req, NULL, TMCB_REQUEST_FWDED,
store_dlg_in_tm_cb, (void*) dlg, NULL) < 0) {
LM_ERR("failed to store dialog in transaction during dialog creation for later reference\n");
}
/* 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;
}
next_state_dlg(dlg, event, &old_state, &new_state, &unref, 0);
LM_DBG("unref after next state is %i\n", unref);
CURR_DLG_ID = req->id;
CURR_DLG_LIFETIME = (unsigned int) (time(0)) - dlg->start_ts;
CURR_DLG_STATUS = new_state;
/* run actions for the transition */
if (event == DLG_EVENT_REQBYE && new_state == DLG_STATE_DELETED &&
old_state != DLG_STATE_DELETED) {
LM_DBG("BYE successfully processed\n");
/* remove from timer */
ret = remove_dialog_timer(&dlg->tl);
if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->from_tag.len, dlg->from_tag.s);
} else if (ret > 0) {
LM_WARN("inconsitent dlg timer data on dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' \n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->from_tag.len, dlg->from_tag.s);
} else {
unref++;
}
/* dialog terminated (BYE) */
dlg_terminated(req, dlg, dir);
unref_dlg(dlg, unref);
return;
}
if ((event == DLG_EVENT_REQ || event == DLG_EVENT_REQACK)
&& new_state == DLG_STATE_CONFIRMED) {
timeout = get_dlg_timeout(req);
if (timeout != default_timeout) {
dlg->lifetime = timeout;
}
if (update_dlg_timer(&dlg->tl, dlg->lifetime) == -1) {
LM_ERR("failed to update dialog lifetime\n");
}
if (update_cseqs(dlg, req, dir, &ttag) != 0) {
LM_ERR("cseqs update failed\n");
} else {
dlg->dflags |= DLG_FLAG_CHANGED;
}
if(dlg_db_mode==DB_MODE_REALTIME && (dlg->dflags&DLG_FLAG_CHANGED)) {
update_dialog_dbinfo(dlg);
}
if (old_state != DLG_STATE_CONFIRMED) {
LM_DBG("confirming ACK successfully processed\n");
/* confirming ACK request */
run_dlg_callbacks(DLGCB_CONFIRMED, dlg, req, NULL, dir, 0);
} else {
LM_DBG("sequential request successfully processed\n");
/* within dialog request */
run_dlg_callbacks(DLGCB_REQ_WITHIN, dlg, req, NULL, dir, 0);
if ((event != DLG_EVENT_REQACK) &&
(dlg->cbs.types) & DLGCB_RESPONSE_WITHIN) {
/* ref the dialog as registered into the transaction callback.
* unref will be done when the callback will be destroyed */
ref_dlg(dlg, 1);
/* register callback for the replies of this request */
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);
}
}
}
}
if (new_state == DLG_STATE_CONFIRMED && old_state != DLG_STATE_CONFIRMED) {
dlg->dflags |= DLG_FLAG_CHANGED;
if(dlg_db_mode == DB_MODE_REALTIME)
update_dialog_dbinfo(dlg);
}
return;
}
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;
}
static void dlg_onreply(struct cell* t, int type, struct tmcb_params *param)
{
struct sip_msg *rpl,*req;
struct dlg_cell *dlg;
int new_state;
int old_state;
int unref;
int event;
str mangled_from = {0,0};
str mangled_to = {0,0};
str *req_out_buff;
dlg = (struct dlg_cell *)(*param->param);
if (shutdown_done || dlg==0)
return;
rpl = param->rpl;
req = param->req;
if (type==TMCB_RESPONSE_FWDED) {
/* this callback is under transaction lock (by TM), so it is save
to operate at write level, but we need to take care on write-read
conflicts -bogdan */
if (rpl!=FAKED_REPLY) {
if (req->msg_flags & (FL_USE_UAC_FROM | FL_USE_UAC_TO ) ) {
req_out_buff = &t->uac[d_tmb.get_branch_index()].request.buffer;
if (extract_ftc_hdrs(req_out_buff->s,req_out_buff->len,
(req->msg_flags & FL_USE_UAC_FROM )?&mangled_from:0,
(req->msg_flags & FL_USE_UAC_TO )?&mangled_to:0,0,0) != 0) {
LM_ERR("failed to extract mangled FROM and TO hdrs\n");
mangled_from.len = 0;
mangled_from.s = NULL;
mangled_to.len = 0;
mangled_to.s = NULL;
} else {
if ((req->msg_flags & FL_USE_UAC_FROM) && (mangled_from.len == 0 || mangled_from.s == NULL))
LM_CRIT("extract_ftc_hdrs ok but no from extracted : [%.*s]\n",req_out_buff->len,req_out_buff->s);
if ((req->msg_flags & FL_USE_UAC_TO) && (mangled_to.len == 0 || mangled_to.s == NULL))
LM_CRIT("extract_ftc_hdrs ok but no to extracted : [%.*s]\n",req_out_buff->len,req_out_buff->s);
}
}
push_reply_in_dialog( rpl, t, dlg,&mangled_from,&mangled_to);
if((dlg->flags & DLG_FLAG_TOPHIDING) &&
dlg_th_onreply(dlg, rpl,req, 1, DLG_DIR_UPSTREAM) < 0)
LM_ERR("Failed to transform the reply for topology hiding\n");
} else {
LM_DBG("dialog replied from script - cannot get callee info\n");
}
/* The state does not change, but the msg is mutable in this callback*/
run_dlg_callbacks(DLGCB_RESPONSE_FWDED, dlg, rpl, DLG_DIR_UPSTREAM, 0);
return;
}
if (type==TMCB_TRANS_CANCELLED) {
/* only if we did force match the Cancel to the
* dialog before ( from the script ) */
if (current_dlg_pointer == NULL) {
/* reference and attached to script */
ref_dlg(dlg,1);
current_dlg_pointer = t->dialog_ctx;
}
return;
}
if (type==TMCB_TRANS_DELETED)
event = DLG_EVENT_TDEL;
else if (param->code<200)
event = DLG_EVENT_RPL1xx;
else if (param->code<300)
event = DLG_EVENT_RPL2xx;
else
event = DLG_EVENT_RPL3xx;
next_state_dlg( dlg, event, &old_state, &new_state, &unref);
if (new_state==DLG_STATE_EARLY && old_state!=DLG_STATE_EARLY) {
run_dlg_callbacks(DLGCB_EARLY, dlg, rpl, DLG_DIR_UPSTREAM, 0);
if_update_stat(dlg_enable_stats, early_dlgs, 1);
return;
}
if (new_state==DLG_STATE_CONFIRMED_NA &&
old_state!=DLG_STATE_CONFIRMED_NA && old_state!=DLG_STATE_CONFIRMED ) {
LM_DBG("dialog %p confirmed\n",dlg);
/* set start time */
dlg->start_ts = (unsigned int)(time(0));
if (0 != insert_dlg_timer( &dlg->tl, dlg->lifetime )) {
LM_CRIT("Unable to insert dlg %p [%u:%u] on event %d [%d->%d] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id, event, old_state, new_state,
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 {
/* reference dialog as kept in timer list */
ref_dlg(dlg,1);
}
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
if (0 != insert_ping_timer( dlg)) {
LM_CRIT("Unable to insert ping dlg %p [%u:%u] on event %d [%d->%d] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id, event, old_state, new_state,
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 {
/* reference dialog as kept in ping timer list */
ref_dlg(dlg,1);
}
}
/* save the settings to the database,
* if realtime saving mode configured- save dialog now
* else: the next time the timer will fire the update*/
dlg->flags |= DLG_FLAG_NEW;
if ( dlg_db_mode==DB_MODE_REALTIME )
update_dialog_dbinfo(dlg);
/* dialog confirmed */
run_dlg_callbacks( DLGCB_CONFIRMED, dlg, rpl, DLG_DIR_UPSTREAM, 0);
if (replication_dests)
replicate_dialog_created(dlg);
if (old_state==DLG_STATE_EARLY)
if_update_stat(dlg_enable_stats, early_dlgs, -1);
if_update_stat(dlg_enable_stats, active_dlgs, 1);
return;
}
if ( old_state!=DLG_STATE_DELETED && new_state==DLG_STATE_DELETED ) {
LM_DBG("dialog %p failed (negative reply)\n", dlg);
/*destroy linkers */
destroy_linkers(dlg->profile_links);
dlg->profile_links = NULL;
/* dialog setup not completed (3456XX) */
run_dlg_callbacks( DLGCB_FAILED, dlg, rpl, DLG_DIR_UPSTREAM, 0);
/* do unref */
if (unref)
unref_dlg(dlg,unref);
if (old_state==DLG_STATE_EARLY)
if_update_stat(dlg_enable_stats, early_dlgs, -1);
if_update_stat(dlg_enable_stats, failed_dlgs, 1);
return;
}
/* in any other case, check if the dialog state machine
requests to unref the dialog */
if (unref)
unref_dlg(dlg,unref);
return;
}
