/*!
* \brief Get pointer to ucontact with given contact
* \param _r record where to search the contacts
* \param _c contact string
* \param _callid callid
* \param _path path
* \param _cseq CSEQ number
* \param _co found contact
* \return 0 - found, 1 - not found, -1 - invalid found,
* -2 - found, but to be skipped (same cseq) - don't forget to release_ucontact so dec. the ref counter
*/
int get_scontact(str* _c, str* _callid, str* _path, int _cseq, struct ucontact** _co) {
unsigned int sl;
ucontact_t* ptr;
int with_callid = 0;
ptr = 0;
*_co = 0;
sl = core_hash(_c, 0, contact_list->size);
LM_DBG("looking for contact [%.*s] in slot %d\n", _c->len, _c->s, sl);
get_act_time();
lock_contact_slot_i(sl);
switch (matching_mode) {
case CONTACT_ONLY:
ptr = contact_match(sl, _c);
break;
case CONTACT_CALLID:
ptr = contact_callid_match(sl, _c, _callid);
with_callid = 1;
break;
case CONTACT_PATH:
ptr = contact_path_match(sl, _c, _path);
break;
case CONTACT_PORT_IP_ONLY:
ptr = contact_port_ip_match(sl, _c);
break;
default:
LM_CRIT("unknown matching_mode %d\n", matching_mode);
unlock_contact_slot_i(sl);
return -1;
}
if (ptr) {
LM_DBG("have partially found a contact\n");
/* found -> check callid and cseq */
if (!with_callid || (_callid && ptr->callid.len == _callid->len
&& memcmp(_callid->s, ptr->callid.s, _callid->len) == 0)) {
if (_cseq < ptr->cseq) {
LM_DBG("cseq less than expected\n");
}
}
LM_DBG("contact found p=[%p], aor:[%.*s] and contact:[%.*s], state [%d]\n", ptr, ptr->aor.len, ptr->aor.s, ptr->c.len, ptr->c.s, ptr->state);
ref_contact_unsafe(ptr);
*_co = ptr;
unlock_contact_slot_i(sl); /*TODO: we probably need to ref count here..... */
return 0;
}
unlock_contact_slot_i(sl);
return 1;
}
/*!
* \brief Add a new contact in memory
*
* Add a new contact in memory, contacts are ordered by:
* 1) q value, 2) descending modification time
* \param _r record this contact belongs to
* \param _c contact
* \param _ci contact information
* \return pointer to new created contact on success, 0 on failure
*/
ucontact_t* mem_insert_scontact(impurecord_t* _r, str* _c, ucontact_info_t* _ci) {
ucontact_t* c;
int sl;
if ((c = new_ucontact(_r->domain, &_r->public_identity, _c, _ci)) == 0) {
LM_ERR("failed to create new contact\n");
return 0;
}
counter_inc(ul_scscf_cnts_h.active_contacts);
LM_DBG("Created new contact in memory with AOR: [%.*s] and hash [%d]\n", _c->len, _c->s, c->sl);
sl = (c->sl);
lock_contact_slot_i(sl);
contact_slot_add(&contact_list->slot[sl], c);
unlock_contact_slot_i(sl);
return c;
}
void unlock_contact_slot(str* contact_uri) {
unsigned int sl;
sl = core_hash(contact_uri, 0, contact_list->size);
unlock_contact_slot_i(sl);
}
/*!
* \brief Run timer handler for given domain
* \param _d domain
*/
void mem_timer_udomain(udomain_t* _d) {
struct impurecord* ptr, *t;
struct ucontact* contact_ptr, *tmp_contact_ptr;
int i;
//go through contacts first
LM_DBG("*** mem_timer_udomain - checking contacts - START ***\n");
for (i = 0; i < contact_list->size; i++) {
#ifdef EXTRA_DEBUG
LM_DBG("looking for contacts in slot %d\n", i);
#endif
lock_contact_slot_i(i);
contact_ptr = contact_list->slot[i].first;
while (contact_ptr) {
LM_DBG("We have a contact in the new contact list in slot %d = [%.*s] (%.*s) which expires in %lf seconds and has a ref count of %d\n", i, contact_ptr->aor.len, contact_ptr->aor.s, contact_ptr->c.len, contact_ptr->c.s, (double) contact_ptr->expires - time(NULL), contact_ptr->ref_count);
if (contact_ptr->ref_count <= 0) {
LM_DBG("Deleting contact [%.*s]\n", contact_ptr->c.len, contact_ptr->c.s);
tmp_contact_ptr = contact_ptr->next;
delete_ucontact(contact_ptr);
contact_ptr = tmp_contact_ptr;
} else {
contact_ptr = contact_ptr->next;
}
}
unlock_contact_slot_i(i);
}
LM_DBG("*** mem_timer_udomain - checking contacts - FINISHED ***\n");
int temp = 0;
LM_DBG("*** mem_timer_udomain - checking IMPUs - START ***\n");
for (i = 0; i < _d->size; i++) {
lock_ulslot(_d, i);
ptr = _d->table[i].first;
temp = 0;
while (ptr) {
temp = 1;
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d LOCKED\n", i);
#endif
t = ptr;
ptr = ptr->next;
timer_impurecord(t);
// if (t->reg_state == IMPU_NOT_REGISTERED && t->shead == 0) {
// //remove it - housekeeping - not sure why its still here...?
// if (exists_ulcb_type(t->cbs, UL_IMPU_NR_DELETE))
// run_ul_callbacks(t->cbs, UL_IMPU_NR_DELETE, t, NULL);
//
// LM_DBG("about to delete impurecord\n");
// delete_impurecord(_d, &t->public_identity, t);
// } //else if (t->reg_state == IMPU_UNREGISTERED) {//Remove IMPU record if it is in state IMPU_UNREGISTERED and has expired
//
// if (time_now >= t->expires) {//check here and only remove if no subscribes - if there is a subscribe then bump the validity by unreg_validity
// if(t->shead != 0){
// LM_DBG("This impurecord still has subscriptions - extending the expiry");
// t->expires = time(NULL) + unreg_validity;
// } else {
// if (exists_ulcb_type(t->cbs, UL_IMPU_UNREG_EXPIRED))
// run_ul_callbacks(t->cbs, UL_IMPU_UNREG_EXPIRED, t, NULL);
// LM_DBG("about to delete impurecord\n");
// delete_impurecord(_d, &t->public_identity, t);
// }
// }
// //} else if (t->reg_state != IMPU_UNREGISTERED && t->contacts == 0) { /* Remove the entire record if it is empty IFF it is not an UNREGISTERED RECORD */
// } else if (t->reg_state != IMPU_UNREGISTERED && t->num_contacts == 0 && t->shead == 0) { /* Remove the entire record if it is empty IFF it is not an UNREGISTERED RECORD */
// /* TS 23.228 5.3.2.1 (release 11) */
// //need a way of distinguishing between deletes that need a SAR (expired) and deletes that do not need a SAR (explicit de reg)
// //we only want to send one SAR for each implicit IMPU set
// //make sure all IMPU's associated with this set are de-registered before calling the callbacks
// int first=1;
// int this_is_first = 0;
//
// lock_get(t->s->lock);
// for (k = 0; k < t->s->service_profiles_cnt; k++){
// for (j = 0;j < t->s->service_profiles[k].public_identities_cnt;j++) {
// impu = &(t->s->service_profiles[k].public_identities[j]);
//
// sl = core_hash(&impu->public_identity, 0, _d->size);
// if (sl != i)
// lock_udomain(_d, &impu->public_identity);
//
// if (first) {
// first = 0; //dont do anything - we will leave this impu to be processed as normal
// if (!strncmp(impu->public_identity.s, t->public_identity.s, t->public_identity.len)) {
// //we are the first in the implicit set
// this_is_first = 1;
// }
// } else {
// //set all other implicits to not registered
// if (update_impurecord(_d, &impu->public_identity, IMPU_NOT_REGISTERED,
// -1/*barring*/, -1 /*do not change send sar on delete */, 0/*is_primary*/, NULL, NULL, NULL, NULL, NULL, &temp_impu) != 0) {
// LM_ERR("Unable to update impurecord for <%.*s>\n", impu->public_identity.len, impu->public_identity.s);
// }
// }
// if (sl != i)
// unlock_udomain(_d, &impu->public_identity);
// }
// }
// lock_release(t->s->lock);
//
// if (this_is_first) {
// //now run a normal callback on our
// if (exists_ulcb_type(t->cbs, UL_IMPU_REG_NC_DELETE))
// run_ul_callbacks(t->cbs, UL_IMPU_REG_NC_DELETE, t, NULL);
// LM_DBG("about to delete impurecord\n");
// delete_impurecord(_d, &t->public_identity, t);
// }
// }
}
if (temp) {
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d UN-LOCKED\n", i);
#endif
}
unlock_ulslot(_d, i);
}
LM_DBG("*** mem_timer_udomain - checking IMPUs - FINISHED ***\n");
}
/*!
* \brief Expires timer for NO_DB db_mode
*
* Expires timer for NO_DB db_mode, process all contacts from
* the record, delete the expired ones from memory.
* \param _r processed record
*/
static inline void process_impurecord(impurecord_t* _r) {
int flag, mustdeleteimpu = 1, n, k;
unsigned int sl;
ucontact_t* ptr;
int hascontacts;
udomain_t* _d;
reg_subscriber *s;
subs_t* sub_dialog;
get_act_time();
s = _r->shead;
LM_DBG("Checking validity of IMPU: <%.*s> registration subscriptions\n", _r->public_identity.len, _r->public_identity.s);
while (s) {
if (!valid_subscriber(s, act_time)) {
LM_DBG("DBG:registrar_timer: Subscriber with watcher_contact <%.*s> and presentity uri <%.*s> expired and removed.\n",
s->watcher_contact.len, s->watcher_contact.s, s->presentity_uri.len, s->presentity_uri.s);
delete_subscriber(_r, s);
} else {
LM_DBG("DBG:registrar_timer: Subscriber with watcher_contact <%.*s> and presentity uri <%.*s> is valid and expires in %d seconds.\n",
s->watcher_contact.len, s->watcher_contact.s, s->presentity_uri.len, s->presentity_uri.s,
(unsigned int) (s->expires - time(NULL)));
sl = core_hash(&s->call_id, &s->to_tag, sub_dialog_hash_size);
LM_DBG("Hash size: <%i>", sub_dialog_hash_size);
LM_DBG("Searching sub dialog hash info with call_id: <%.*s> and ttag <%.*s> ftag <%.*s> and hash code <%i>", s->call_id.len, s->call_id.s, s->to_tag.len, s->to_tag.s, s->from_tag.len, s->from_tag.s, sl);
/* search the record in hash table */
lock_get(&sub_dialog_table[sl].lock);
sub_dialog = pres_search_shtable(sub_dialog_table, s->call_id, s->to_tag, s->from_tag, sl);
if (sub_dialog == NULL) {
LM_ERR("DBG:registrar_timer: Subscription has no dialog record in hash table\n");
} else {
LM_DBG("DBG:registrar_timer: Subscription has dialog record in hash table with presentity uri <%.*s>\n", sub_dialog->pres_uri.len, sub_dialog->pres_uri.s);
}
lock_release(&sub_dialog_table[sl].lock);
mustdeleteimpu = 0;
}
s = s->next;
}
LM_DBG("\tPublic Identity %.*s, Barred: [%d], State: [%s]\n",
_r->public_identity.len, _r->public_identity.s,
_r->barring,
get_impu_regstate_as_string(_r->reg_state));
flag = 0;
hascontacts = 0;
num_contacts_to_expire = 0;
for (k = 0; (k < _r->num_contacts) && (k < MAX_CONTACTS_PER_IMPU); k++) {
if ((ptr = _r->newcontacts[k])) {
flag = 1;
if (!VALID_CONTACT(ptr, act_time)) {
if (ptr->state == CONTACT_DELETED) {
LM_DBG("Contact: <%.*s> has been deleted - unlinking from IMPU\n", ptr->c.len, ptr->c.s);
contacts_to_expire[num_contacts_to_expire] = ptr;
num_contacts_to_expire++;
} else if (ptr->state == CONTACT_EXPIRE_PENDING_NOTIFY) {
LM_DBG("Contact: <%.*s> is in state CONTACT_EXPIRE_PENDING_NOTIFY....running callback\n", ptr->c.len, ptr->c.s);
if (exists_ulcb_type(_r->cbs, UL_IMPU_DELETE_CONTACT)) {
LM_DBG("Running callback UL_IMPU_DELETE_CONTACT for contact [%.*s] and impu [%.*s]\n", ptr->c.len, ptr->c.s, _r->public_identity.len, _r->public_identity.s);
run_ul_callbacks(_r->cbs, UL_IMPU_DELETE_CONTACT, _r, ptr);
}
hascontacts = 1; // we do this because the impu must only be deleted if in state deleted....
mustdeleteimpu = 0;
} else if (ptr->state == CONTACT_VALID) {
LM_DBG("Contact: <%.*s> is in state valid but it has expired.... ignoring as the contact check will set the appropriate action/state\n", ptr->c.len, ptr->c.s);
mustdeleteimpu = 0;
hascontacts = 1;
} else {
LM_WARN("Bogus state for contact [%.*s] - state: %d... ignoring", ptr->c.len, ptr->c.s, ptr->state);
mustdeleteimpu = 0;
hascontacts = 1;
}
} else {
LM_DBG("\t\tContact #%i - %.*s, Ref [%d] (expires in %ld seconds) (State: %d)\n",
k, ptr->c.len, ptr->c.s, ptr->ref_count, ptr->expires - act_time, ptr->state);
mustdeleteimpu = 0;
hascontacts = 1;
}
} else {
LM_WARN("num_contacts and actual data not consistent... .aborting\n");
break;
}
}
if (num_contacts_to_expire > 0) {
LM_DBG("\tThere are %d contacts to expire/unlink\n", num_contacts_to_expire);
for (n = 0; n < num_contacts_to_expire; n++) {
ptr = contacts_to_expire[n];
LM_DBG("\t\texpiring contact %i: [%.*s] in slot [%d]\n", n, contacts_to_expire[n]->c.len, contacts_to_expire[n]->c.s, contacts_to_expire[n]->sl);
sl = ptr->sl;
lock_contact_slot_i(sl);
unlink_contact_from_impu(_r, ptr, 1, 0 /*implicit dereg of contact from IMPU*/);
unlock_contact_slot_i(sl);
}
}
if (!flag)
LM_DBG("no contacts\n");
if (mustdeleteimpu) {
register_udomain("location", &_d);
delete_impurecord(_d, &_r->public_identity, _r);
} else {
if (!hascontacts) {
LM_DBG("This impu is not to be deleted but has no contacts - changing state to IMPU_UNREGISTERED\n");
_r->reg_state = IMPU_UNREGISTERED;
}
}
}
/*!
* \brief Run timer handler for given domain
* \param _d domain
*/
void mem_timer_udomain(udomain_t* _d) {
struct impurecord* ptr, *t;
struct ucontact* contact_ptr;
int i, n, temp;
//go through contacts first
n = contact_list->max_collisions;
LM_DBG("*** mem_timer_udomain - checking contacts - START ***\n");
for (i = 0; i < contact_list->size; i++) {
lock_contact_slot_i(i);
contact_ptr = contact_list->slot[i].first;
while (contact_ptr) {
LM_DBG("We have a contact in the new contact list in slot %d = [%.*s] (%.*s) which expires in %lf seconds and has a ref count of %d\n", i, contact_ptr->aor.len, contact_ptr->aor.s, contact_ptr->c.len, contact_ptr->c.s, (double) contact_ptr->expires - time(NULL), contact_ptr->ref_count);
//contacts are now deleted during impurecord processing
contact_ptr = contact_ptr->next;
}
if (contact_list->slot[i].n > n) {
n = contact_list->slot[i].n;
}
unlock_contact_slot_i(i);
contact_list->max_collisions = n;
}
LM_DBG("*** mem_timer_udomain - checking contacts - FINISHED ***\n");
temp = 0;
n = _d->max_collisions;
LM_DBG("*** mem_timer_udomain - checking IMPUs - START ***\n");
for (i = 0; i < _d->size; i++) {
lock_ulslot(_d, i);
ptr = _d->table[i].first;
temp = 0;
while (ptr) {
temp = 1;
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d LOCKED\n", i);
#endif
t = ptr;
ptr = ptr->next;
timer_impurecord(t);
}
if (temp) {
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d UN-LOCKED\n", i);
#endif
}
if (_d->table[i].n > n)
n = _d->table[i].n;
unlock_ulslot(_d, i);
_d->max_collisions = n;
}
LM_DBG("*** mem_timer_udomain - checking IMPUs - FINISHED ***\n");
n = ims_subscription_list->max_collisions;
for (i = 0; i < ims_subscription_list->size; i++) {
lock_subscription_slot(i);
if (ims_subscription_list->slot[i].n > n) {
n = ims_subscription_list->slot[i].n;
}
unlock_subscription_slot(i);
}
ims_subscription_list->max_collisions = n;
}
void release_ucontact(struct ucontact* _c) {
lock_contact_slot_i(_c->contact_hash);
_c->ref_count--;
unlock_contact_slot_i(_c->contact_hash);
}
/*!
* \brief Run timer handler for given domain
* \param _d domain
*/
void mem_timer_udomain(udomain_t* _d, int istart, int istep) {
struct impurecord* ptr, *t;
struct ucontact* contact_ptr;
unsigned int num_expired_contacts = 0;
int i, n, temp;
time_t now;
int abort = 0;
int slot;
int ref_count_db;
now = time(0);
if (istart == 0) {
int numcontacts = contact_list->size*2; //assume we should be ok for each slot to have 2 collisions
if (expired_contacts_size < numcontacts) {
LM_DBG("Changing expired_contacts list size from %d to %d\n", expired_contacts_size, numcontacts);
if (expired_contacts){
pkg_free(expired_contacts);
}
expired_contacts = (ucontact_t**)pkg_malloc(numcontacts*sizeof(ucontact_t**));
if (!expired_contacts) {
LM_ERR("no more pkg mem trying to allocate [%lu] bytes\n", numcontacts*sizeof(ucontact_t**));
return;
}
expired_contacts_size = numcontacts;
}
//go through contacts first
n = contact_list->max_collisions;
LM_DBG("*** mem_timer_udomain - checking contacts - START ***\n");
for (i=0; i < contact_list->size; i++) {
lock_contact_slot_i(i);
contact_ptr = contact_list->slot[i].first;
while (contact_ptr) {
if (num_expired_contacts >= numcontacts) {
LM_WARN("we don't have enough space to expire all contacts in this pass - will continue in next pass\n");
abort = 1;
break;
}
LM_DBG("We have a [3gpp=%d] contact in the new contact list in slot %d = [%.*s] (%.*s) which expires in %lf seconds and has a ref count of %d (state: %s)\n",
contact_ptr->is_3gpp, i, contact_ptr->aor.len, contact_ptr->aor.s, contact_ptr->c.len, contact_ptr->c.s,
(double) contact_ptr->expires - now, contact_ptr->ref_count,
get_contact_state_as_string(contact_ptr->state));
//contacts are now deleted during impurecord processing
if ((contact_ptr->expires-now) <= 0) {
if (contact_ptr->state == CONTACT_DELAYED_DELETE) {
if (contact_ptr->ref_count <= 0) {
LM_DBG("contact in state CONTACT_DELATED_DELETE is about to be deleted");
expired_contacts[num_expired_contacts] = contact_ptr;
num_expired_contacts++;
} else {
/* we could fall here not because contact is still
referenced but also because we failed before to
get a lock to unref the contact, so we check if
contact is really referenced*/
if (db_mode != NO_DB) {
LM_DBG("contact in state CONTACT_DELAYED_DELETE still has a ref count of [%d] in memory. Check on DB \n", contact_ptr->ref_count);
ref_count_db = db_check_if_contact_is_linked(contact_ptr);
if (ref_count_db < 0) {
LM_ERR("Unable to check if contact is unlinked\n");
} else if (ref_count_db == 0) {
LM_DBG("Contact has ref count [%d] but there's no link on the DB. Deleting contact", contact_ptr->ref_count);
contact_ptr->ref_count = 0;
expired_contacts[num_expired_contacts] = contact_ptr;
num_expired_contacts++;
} else {
LM_DBG("Contact in state CONTACT_DELAYED_DELETE has ref count [%d] on DB", ref_count_db);
}
} else {
LM_DBG("contact in state CONTACT_DELAYED_DELETE still has a ref count of [%d] in memory. Not doing anything for now \n", contact_ptr->ref_count);
}
}
} else if (contact_ptr->state != CONTACT_DELETED) {
LM_DBG("expiring contact [%.*s].... setting to CONTACT_EXPIRE_PENDING_NOTIFY\n", contact_ptr->aor.len, contact_ptr->aor.s);
contact_ptr->state = CONTACT_EXPIRE_PENDING_NOTIFY;
ref_contact_unsafe(contact_ptr);
expired_contacts[num_expired_contacts] = contact_ptr;
num_expired_contacts++;
}
}
contact_ptr = contact_ptr->next;
}
if (contact_list->slot[i].n > n) {
n = contact_list->slot[i].n;
}
unlock_contact_slot_i(i);
contact_list->max_collisions = n;
if (abort == 1) {
break;
}
}
LM_DBG("*** mem_timer_udomain - checking contacts - FINISHED ***\n");
}
temp = 0;
n = _d->max_collisions;
LM_DBG("*** mem_timer_udomain - checking IMPUs - START ***\n");
for (i = istart; i < _d->size; i+=istep) {
lock_ulslot(_d, i);
ptr = _d->table[i].first;
temp = 0;
while (ptr) {
temp = 1;
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d LOCKED\n", i);
#endif
t = ptr;
ptr = ptr->next;
timer_impurecord(t);
}
if (temp) {
#ifdef EXTRA_DEBUG
LM_DBG("ULSLOT %d UN-LOCKED\n", i);
#endif
}
if (_d->table[i].n > n)
n = _d->table[i].n;
unlock_ulslot(_d, i);
_d->max_collisions = n;
}
LM_DBG("*** mem_timer_udomain - checking IMPUs - FINISHED ***\n");
if (istart == 0) {
n = ims_subscription_list->max_collisions;
for (i = 0; i < ims_subscription_list->size; i++) {
lock_subscription_slot(i);
if (ims_subscription_list->slot[i].n > n) {
n = ims_subscription_list->slot[i].n;
}
unlock_subscription_slot(i);
}
ims_subscription_list->max_collisions = n;
/* now we delete the expired contacts. (mark them for deletion */
for (i=0; i<num_expired_contacts; i++) {
slot = expired_contacts[i]->sl;
lock_contact_slot_i(slot);
if (expired_contacts[i]->state != CONTACT_DELAYED_DELETE) {
LM_DBG("Setting contact state to CONTACT_DELETED for contact [%.*s]\n", expired_contacts[i]->aor.len, expired_contacts[i]->aor.s);
expired_contacts[i]->state = CONTACT_DELETED;
unref_contact_unsafe(expired_contacts[i]);
} else {
LM_DBG("deleting contact [%.*s]\n", expired_contacts[i]->aor.len, expired_contacts[i]->aor.s);
delete_scontact(expired_contacts[i]);
}
unlock_contact_slot_i(slot);
}
}
}