/
impurecord.c
1203 lines (1076 loc) · 45.6 KB
/
impurecord.c
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/*
* $Id$
*
* Copyright (C) 2012 Smile Communications, jason.penton@smilecoms.com
* Copyright (C) 2012 Smile Communications, richard.good@smilecoms.com
*
* The initial version of this code was written by Dragos Vingarzan
* (dragos(dot)vingarzan(at)fokus(dot)fraunhofer(dot)de and the
* Fruanhofer Institute. It was and still is maintained in a separate
* branch of the original SER. We are therefore migrating it to
* Kamailio/SR and look forward to maintaining it from here on out.
* 2011/2012 Smile Communications, Pty. Ltd.
* ported/maintained/improved by
* Jason Penton (jason(dot)penton(at)smilecoms.com and
* Richard Good (richard(dot)good(at)smilecoms.com) as part of an
* effort to add full IMS support to Kamailio/SR using a new and
* improved architecture
*
* NB: Alot of this code was originally part of OpenIMSCore,
* FhG Fokus.
* Copyright (C) 2004-2006 FhG Fokus
* Thanks for great work! This is an effort to
* break apart the various CSCF functions into logically separate
* components. We hope this will drive wider use. We also feel
* that in this way the architecture is more complete and thereby easier
* to manage in the Kamailio/SR environment
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "impurecord.h"
#include <string.h>
#include "../../hashes.h"
#include "../../mem/shm_mem.h"
#include "../../dprint.h"
#include "../../ut.h"
#include "ul_mod.h"
#include "usrloc.h"
#include "utime.h"
#include "ul_callback.h"
#include "usrloc.h"
#include "bin_utils.h"
#include "subscribe.h"
#include "usrloc_db.h"
#include "../../lib/ims/useful_defs.h"
#include "../../modules/ims_dialog/dlg_load.h"
#include "../../modules/ims_dialog/dlg_hash.h"
#include "contact_hslot.h"
#include "dlist.h"
#include "ul_scscf_stats.h"
#include "hslot_sp.h"
/*! contact matching mode */
int matching_mode = CONTACT_ONLY;
/*! retransmission detection interval in seconds */
int cseq_delay = 20;
extern int unreg_validity;
extern int maxcontact_behaviour;
extern int maxcontact;
extern int db_mode;
extern int sub_dialog_hash_size;
extern int subs_hash_size;
extern shtable_t sub_dialog_table;
extern struct contact_list* contact_list;
extern struct ims_subscription_list* ims_subscription_list;
extern struct dlg_binds dlgb;
static ucontact_t* contacts_to_expire [MAX_CONTACTS_PER_IMPU]; //this is done to prevent fragmentation of memory...
static int num_contacts_to_expire;
/*!
* \brief Create and initialize new record structure
* \param _dom domain name
* \param _aor address of record
* \param _r pointer to the new record
* \return 0 on success, negative on failure
*/
int new_impurecord(str* _dom, str* public_identity, str* private_identity, int reg_state, int barring, ims_subscription** s, str* ccf1, str* ccf2, str* ecf1, str* ecf2, impurecord_t** _r) {
*_r = (impurecord_t*) shm_malloc(sizeof (impurecord_t));
if (*_r == 0) {
LM_ERR("no more shared memory\n");
return -1;
}
memset(*_r, 0, sizeof (impurecord_t));
//setup callback list
(*_r)->cbs = (struct ulcb_head_list*) shm_malloc(
sizeof (struct ulcb_head_list));
if ((*_r)->cbs == 0) {
LM_CRIT("no more shared mem\n");
shm_free(*_r);
goto error;
}
(*_r)->cbs->first = 0;
(*_r)->cbs->reg_types = 0;
(*_r)->public_identity.s = (char*) shm_malloc(public_identity->len);
if ((*_r)->public_identity.s == 0) {
LM_ERR("no more shared memory\n");
shm_free(*_r);
goto error;
}
memcpy((*_r)->public_identity.s, public_identity->s, public_identity->len);
(*_r)->public_identity.len = public_identity->len;
(*_r)->private_identity.s = (char*) shm_malloc(private_identity->len);
if ((*_r)->private_identity.s == 0) {
LM_ERR("no more shared memory\n");
shm_free(*_r);
goto error;
}
memcpy((*_r)->private_identity.s, private_identity->s, private_identity->len);
(*_r)->private_identity.len = private_identity->len;
(*_r)->domain = _dom;
(*_r)->aorhash = core_hash(public_identity, 0, 0);
(*_r)->reg_state = reg_state;
if (barring >= 0) { //just in case we call this with no barring -1 will ignore
(*_r)->barring = barring;
}
(*_r)->send_sar_on_delete = 1; /*defaults to 1 */
if (ccf1 && ccf1->len > 0) STR_SHM_DUP((*_r)->ccf1, *ccf1, "CCF1");
if (ccf2 && ccf2->len > 0) STR_SHM_DUP((*_r)->ccf2, *ccf2, "CCF2");
if (ecf1 && ecf1->len > 0) STR_SHM_DUP((*_r)->ecf1, *ecf1, "ECF1");
if (ecf2 && ecf2->len > 0) STR_SHM_DUP((*_r)->ecf2, *ecf2, "ECF2");
/*assign ims subscription profile*/
if (s && *s) {
ref_subscription_unsafe(*s);
(*_r)->s = *s;
}
return 0;
out_of_memory:
LM_ERR("no more shared memory\n");
*_r = 0;
return -3;
error:
LM_ERR("Failed to create new impurecord...\n");
*_r = 0;
return -2;
}
/*!
* \brief Free all memory used by the given structure
*
* Free all memory used by the given structure.
* The structure must be removed from all linked
* lists first
* \param _r freed record list
*/
void free_impurecord(impurecord_t* _r) {
struct ul_callback *cbp, *cbp_tmp;
struct _reg_subscriber* subscriber, *s_tmp;
LM_DBG("free_impurecord\n");
//free IMS specific extensions
if (_r->ccf1.s)
shm_free(_r->ccf1.s);
if (_r->ccf2.s)
shm_free(_r->ccf2.s);
if (_r->ecf1.s)
shm_free(_r->ecf1.s);
if (_r->ecf2.s)
shm_free(_r->ecf2.s);
if (_r->s) {
unref_subscription(_r->s);
}
/*remove REG subscriptions to this IMPU*/
subscriber = _r->shead;
while (subscriber) {
s_tmp = subscriber->next;
free_subscriber(subscriber);
subscriber = s_tmp;
}
_r->shead = 0;
if (_r->public_identity.s)
shm_free(_r->public_identity.s);
if (_r->private_identity.s)
shm_free(_r->private_identity.s);
//free callback list
for (cbp = _r->cbs->first; cbp;) {
cbp_tmp = cbp;
cbp = cbp->next;
if (cbp_tmp->param)
shm_free(cbp_tmp->param);
shm_free(cbp_tmp);
}
shm_free(_r->cbs);
shm_free(_r);
}
/*!
* \brief Print a record, useful for debugging
* \param _f print output
* \param _r printed record
*/
void print_impurecord(FILE* _f, impurecord_t* _r) {
ucontact_t* ptr;
int i = 0;
fprintf(_f, "...Record(%p)...\n", _r);
fprintf(_f, "domain : '%.*s'\n", _r->domain->len, ZSW(_r->domain->s));
fprintf(_f, "public_identity : '%.*s'\n", _r->public_identity.len, ZSW(_r->public_identity.s));
fprintf(_f, "aorhash: '%u'\n", (unsigned) _r->aorhash);
fprintf(_f, "slot: '%d'\n", _r->aorhash & (_r->slot->d->size - 1));
fprintf(_f, "pi_ref: '%d'\n", _r->reg_state);
fprintf(_f, "barring: '%d'\n", _r->barring);
fprintf(_f, "ccf1: '%.*s'\n", _r->ccf1.len, _r->ccf1.s);
fprintf(_f, "ccf2: '%.*s'\n", _r->ccf2.len, _r->ccf2.s);
fprintf(_f, "ecf1: '%.*s'\n", _r->ecf1.len, _r->ecf1.s);
fprintf(_f, "ecf2: '%.*s'\n", _r->ecf2.len, _r->ecf2.s);
if (_r->s) {
fprintf(_f, "IMS subs (#%d): '%p'\n", _r->s->service_profiles_cnt, _r->s);
fprintf(_f, "#profiles: '%d\n", _r->s->service_profiles_cnt);
}
int header = 0;
reg_subscriber* subscriber = _r->shead;
while (subscriber) {
if (!header) {
fprintf(_f, "...Subscriptions...\n");
header = 1;
}
fprintf(_f, "watcher uri: <%.*s> and presentity uri: <%.*s>\n", subscriber->watcher_uri.len, subscriber->watcher_uri.s, subscriber->presentity_uri.len, subscriber->presentity_uri.s);
fprintf(_f, "Expires: %ld\n", subscriber->expires);
subscriber = subscriber->next;
}
if (_r->newcontacts[0]) {
while ((ptr = _r->newcontacts[i++])) {
print_ucontact(_f, ptr);
}
}
fprintf(_f, ".../Record...\n\n\n\n");
}
/*!
* \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;
}
/*!
* \brief Remove the contact from lists in memory
* \param _r record this contact belongs to
* \param _c removed contact
*/
void mem_remove_ucontact(ucontact_t* _c) {
LM_DBG("removing contact [%.*s] from slot %d\n", _c->c.len, _c->c.s, _c->sl);
contact_slot_rem(&contact_list->slot[_c->sl], _c);
counter_add(ul_scscf_cnts_h.active_contacts, -1);
}
/*!
* \brief Remove contact in memory from the list and delete it
* \param _r record this contact belongs to
* \param _c deleted contact
*/
void mem_delete_ucontact(ucontact_t* _c) {
struct contact_dialog_data *dialog_data;
//tear down dialogs in dialog data list
LM_DBG("Checking if dialog_data is there and needs to be torn down\n");
if(_c->first_dialog_data == 0) {
LM_DBG("first dialog is 0!\n");
} else {
LM_DBG("first dialog is not 0\n");
}
for (dialog_data = _c->first_dialog_data; dialog_data;) {
LM_DBG("Going to tear down dialog with info h_entry [%d] h_id [%d]\n", dialog_data->h_entry, dialog_data->h_id);
dlgb.lookup_terminate_dlg(dialog_data->h_entry, dialog_data->h_id, NULL);
dialog_data = dialog_data->next;
}
mem_remove_ucontact(_c);
free_ucontact(_c);
}
static str autocommit_off = str_init("SET AUTOCOMMIT=0");
static str fail_isolation_level = str_init("SET TRANSACTION ISOLATION LEVEL READ COMMITTED");
static str start_transaction = str_init("START TRANSACTION");
static str commit = str_init("COMMIT");
static str rollback = str_init("ROLLBACK");
static str autocommit_on = str_init("SET AUTOCOMMIT=1");
static inline void start_dbtransaction() {
if (db_mode == NO_DB)
return;
if (ul_dbf.raw_query(ul_dbh, &autocommit_off, NULL) < 0) {
LM_ERR("could not "
"set autocommit off!\n");
}
if (ul_dbf.raw_query(ul_dbh, &fail_isolation_level, NULL) < 0) {
LM_ERR("could not "
"set transaction isolation level!\n");
}
if (ul_dbf.raw_query(ul_dbh, &start_transaction, NULL) < 0) {
LM_ERR("could not "
"start transaction!\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;
int dbwork = 0;
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);
if (!dbwork) {
start_dbtransaction();
dbwork = 1;
}
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);
if (!dbwork) {
start_dbtransaction();
dbwork=1;
}
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) {
if (!dbwork) {
start_dbtransaction();
dbwork=1;
}
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;
}
}
if (dbwork) {
if (ul_dbf.raw_query(ul_dbh, &commit, NULL) < 0) {
LM_ERR("transaction commit "
"failed.\n");
}
if (ul_dbf.raw_query(ul_dbh, &autocommit_on, NULL) < 0) {
LM_ERR("could not turn "
"transaction autocommit on.\n");
}
}
}
/*!
* \brief Process impurecords (check contacts for expiry, etc (assume domain slot is locked)
* @param _r impurecord to process
*/
void timer_impurecord(impurecord_t* _r) {
process_impurecord(_r);
}
int get_contacts_count(impurecord_t* _r) {
ucontact_t* ptr;
int i = 0;
while (i < MAX_CONTACTS_PER_IMPU && (ptr = _r->newcontacts[i])) {
i++;
}
return i;
}
/*!
* \brief Create and insert new contact into impurecord
* \param _r record into the new contact should be inserted
* \param _contact contact string
* \param _ci contact information
* \param _c new created contact
* \return 0 on success, -1 on failure
*/
int insert_scontact(impurecord_t* _r, str* _contact, ucontact_info_t* _ci, ucontact_t** _c) {
//First check our constraints
if (maxcontact > 0 && maxcontact_behaviour > 0) {
int numcontacts = get_contacts_count(_r);
if (numcontacts >= maxcontact) {
switch (maxcontact_behaviour) {
case 1://reject
LM_ERR("too many contacts already registered for IMPU <%.*s>\n", _r->public_identity.len, _r->public_identity.s);
return -1;
case 2://overwrite oldest
LM_DBG("Too many contacts already registered, overwriting oldest for IMPU <%.*s>\n", _r->public_identity.len, _r->public_identity.s);
//we can just remove the first one seeing the contacts are ordered on insertion with newest last and oldest first
break;
default://unknown
LM_ERR("unknown maxcontact behaviour..... ignoring\n");
break;
}
}
}
//at this stage we are safe to insert the new contact
LM_DBG("INSERTing ucontact in usrloc module\n");
if (((*_c) = mem_insert_scontact(_r, _contact, _ci)) == 0) {
LM_ERR("failed to insert contact\n");
return -1;
}
// /*DB?*/
if (db_mode == WRITE_THROUGH && db_insert_ucontact(_r, *_c) != 0) {
LM_ERR("error inserting contact into db");
return -1;
}
//make sure IMPU is linked to this contact
link_contact_to_impu(_r, *_c, 1);
release_scontact(*_c);
if (exists_ulcb_type(NULL, UL_CONTACT_INSERT)) {
run_ul_callbacks(NULL, UL_CONTACT_INSERT, _r, *_c);
}
if (exists_ulcb_type(_r->cbs, UL_IMPU_NEW_CONTACT)) {
run_ul_callbacks(_r->cbs, UL_IMPU_NEW_CONTACT, _r, *_c);
}
return 0;
}
/*!
* \brief Delete ucontact from impurecord
* \param _r record where the contact belongs to
* \param _c deleted contact
* \return 0 on success, -1 on failure
*/
int delete_scontact(struct ucontact* _c) {
int ret = 0;
LM_DBG("Deleting contact: [%.*s]\n", _c->c.len, _c->c.s);
/*DB?*/
if (db_mode == WRITE_THROUGH && db_delete_ucontact(_c) != 0) {
LM_ERR("error removing contact from DB [%.*s]... will still remove from memory\n", _c->c.len, _c->c.s);
}
mem_delete_ucontact(_c);
return ret;
}
/* function to convert contact aor to only have data after @ - ie strip user part */
inline int aor_to_contact(str* aor, str* contact) {
char* p;
int ret = 0; //success
contact->s = aor->s;
contact->len = aor->len;
if (memcmp(aor->s, "sip:", 4) == 0) {
contact->s = aor->s + 4;
contact->len -= 4;
}
if ((p = memchr(contact->s, '@', contact->len))) {
contact->len -= (p - contact->s + 1);
contact->s = p + 1;
}
if ((p = memchr(contact->s, ';', contact->len))) {
contact->len = p - contact->s;
}
if ((p = memchr(contact->s, '>', contact->len))) {
contact->len = p - contact->s;
}
return ret;
}
/*!
* \brief Match a contact record to a contact string
* \param ptr contact record
* \param _c contact string
* \return ptr on successfull match, 0 when they not match
*/
static inline struct ucontact* contact_match(unsigned int slot, str* _c) {
ucontact_t* ptr = contact_list->slot[slot].first;
while (ptr) {
if ((ptr->state != CONTACT_DELAYED_DELETE) && (_c->len == ptr->c.len) && !memcmp(_c->s, ptr->c.s, _c->len)) {//check validity
return ptr;
}
ptr = ptr->next;
}
return 0;
}
/*!
* \brief Match a contact record to a contact string but only compare the ip port portion
* \param ptr contact record
* \param _c contact string
* \return ptr on successfull match, 0 when they not match
*/
static inline struct ucontact* contact_port_ip_match(unsigned int slot, str* _c) {
ucontact_t* ptr = contact_list->slot[slot].first;
str string_ip_port, contact_ip_port;
aor_to_contact(_c, &string_ip_port); //strip userpart from test contact
while (ptr) {
aor_to_contact(&ptr->c, &contact_ip_port); //strip userpart from contact
if ((ptr->state != CONTACT_DELAYED_DELETE)
&& (string_ip_port.len == contact_ip_port.len)
&& !memcmp(string_ip_port.s, contact_ip_port.s, string_ip_port.len)) {
return ptr;
}
ptr = ptr->next;
}
return 0;
}
/*!
* \brief Match a contact record to a contact string and callid
* \param ptr contact record
* \param _c contact string
* \param _callid callid
* \return ptr on successfull match, 0 when they not match
*/
static inline struct ucontact* contact_callid_match(unsigned int slot,
str* _c, str *_callid) {
ucontact_t* ptr = contact_list->slot[slot].first;
while (ptr) {
if ((ptr->state != CONTACT_DELAYED_DELETE)
&& (_c->len == ptr->c.len) && (_callid->len == ptr->callid.len)
&& !memcmp(_c->s, ptr->c.s, _c->len)
&& !memcmp(_callid->s, ptr->callid.s, _callid->len)) {
return ptr;
}
ptr = ptr->next;
}
return 0;
}
/*!
+ * \brief Match a contact record to a contact string and path
+ * \param ptr contact record
+ * \param _c contact string
+ * \param _path path
+ * \return ptr on successfull match, 0 when they not match
+ */
static inline struct ucontact* contact_path_match(unsigned int slot, str* _c, str *_path) {
ucontact_t* ptr = contact_list->slot[slot].first;
/* if no path is preset (in REGISTER request) or use_path is not configured
in registrar module, default to contact_match() */
if (_path == NULL) return contact_match(slot, _c);
while (ptr) {
if ((ptr->state != CONTACT_DELAYED_DELETE)
&& (_c->len == ptr->c.len) && (_path->len == ptr->path.len)
&& !memcmp(_c->s, ptr->c.s, _c->len)
&& !memcmp(_path->s, ptr->path.s, _path->len)
&& VALID_CONTACT(ptr, act_time)
) {
return ptr;
}
ptr = ptr->next;
}
return 0;
}
/*!
* \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;
}
/**
* Deallocates memory used by a subscription.
* \note Must be called with the lock got to avoid races
* @param s - the ims_subscription to free
*/
void free_ims_subscription_data(ims_subscription *s) {
int i, j, k;
if (!s) return;
/* lock_get(s->lock); - must be called with the lock got */
for (i = 0; i < s->service_profiles_cnt; i++) {
for (j = 0; j < s->service_profiles[i].public_identities_cnt; j++) {
if (s->service_profiles[i].public_identities[j].public_identity.s)
shm_free(s->service_profiles[i].public_identities[j].public_identity.s);
if (s->service_profiles[i].public_identities[j].wildcarded_psi.s)
shm_free(s->service_profiles[i].public_identities[j].wildcarded_psi.s);
}
if (s->service_profiles[i].public_identities)
shm_free(s->service_profiles[i].public_identities);
for (j = 0; j < s->service_profiles[i].filter_criteria_cnt; j++) {
if (s->service_profiles[i].filter_criteria[j].trigger_point) {
for (k = 0; k < s->service_profiles[i].filter_criteria[j].trigger_point->spt_cnt; k++) {
switch (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].type) {
case IFC_REQUEST_URI:
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].request_uri.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].request_uri.s);
break;
case IFC_METHOD:
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].method.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].method.s);
break;
case IFC_SIP_HEADER:
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].sip_header.header.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].sip_header.header.s);
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].sip_header.content.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].sip_header.content.s);
break;
case IFC_SESSION_CASE:
break;
case IFC_SESSION_DESC:
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].session_desc.line.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].session_desc.line.s);
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].session_desc.content.s)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt[k].session_desc.content.s);
break;
}
}
if (s->service_profiles[i].filter_criteria[j].trigger_point->spt)
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point->spt);
shm_free(s->service_profiles[i].filter_criteria[j].trigger_point);
}
if (s->service_profiles[i].filter_criteria[j].application_server.server_name.s)
shm_free(s->service_profiles[i].filter_criteria[j].application_server.server_name.s);
if (s->service_profiles[i].filter_criteria[j].application_server.service_info.s)
shm_free(s->service_profiles[i].filter_criteria[j].application_server.service_info.s);
if (s->service_profiles[i].filter_criteria[j].profile_part_indicator)
shm_free(s->service_profiles[i].filter_criteria[j].profile_part_indicator);
}
if (s->service_profiles[i].filter_criteria)
shm_free(s->service_profiles[i].filter_criteria);
if (s->service_profiles[i].cn_service_auth)
shm_free(s->service_profiles[i].cn_service_auth);
if (s->service_profiles[i].shared_ifc_set)
shm_free(s->service_profiles[i].shared_ifc_set);
}
if (s->service_profiles) shm_free(s->service_profiles);
if (s->private_identity.s) shm_free(s->private_identity.s);
// ul.unlock_subscription(s);
#ifdef EXTRA_DEBUG
LM_DBG("SUBSCRIPTION LOCK %p destroyed\n", s->lock);
#endif
lock_destroy(s->lock);
lock_dealloc(s->lock);
shm_free(s);
}
int compare_subscription(ims_subscription* new, ims_subscription* orig) {
int i, j, k, l;
LM_DBG("Comparing subscription for IMPI [%.*s]\n", orig->private_identity.len, orig->private_identity.s);
for (i = 0; i < orig->service_profiles_cnt; i++) {
for (j = 0; j < orig->service_profiles[i].public_identities_cnt; j++) {
for (k = 0; k < new->service_profiles_cnt; k++) {
for (l = 0; l < new->service_profiles[k].public_identities_cnt; l++) {
LM_DBG("new %.*s (%i) vs. orig %.*s (%i)\n",
new->service_profiles[k].public_identities[l].public_identity.len,
new->service_profiles[k].public_identities[l].public_identity.s,
new->service_profiles[k].public_identities[l].public_identity.len,
orig->service_profiles[i].public_identities[j].public_identity.len,
orig->service_profiles[i].public_identities[j].public_identity.s,
orig->service_profiles[i].public_identities[j].public_identity.len);
if (orig->service_profiles[i].public_identities[j].public_identity.len ==
new->service_profiles[k].public_identities[l].public_identity.len) {
if (memcmp(orig->service_profiles[i].public_identities[j].public_identity.s,
new->service_profiles[k].public_identities[l].public_identity.s,
new->service_profiles[k].public_identities[l].public_identity.len) == 0)
return 1;
}
}
}
}
}
return 0;
}
/**
* @brief update an existing impurecord. if one doesn't exist it will be created. assumes the domain is locked
* @param _d
* @param public_identity only used if impu_rec is null
* @param impu_rec if passed in we use this as the record and we assume caller has already done locking on the domain...
* @param reg_state
* @param send_sar_on_delete
* @param barring
* @param is_primary
* @param s
* @param ccf1
* @param ccf2
* @param ecf1
* @param ecf2
* @param _r
* @return 0 on success (domain will remain locked)
*/
int update_impurecord(struct udomain* _d, str* public_identity, impurecord_t* impu_rec, int reg_state, int send_sar_on_delete, int barring, int is_primary, ims_subscription** s, str* ccf1, str* ccf2, str* ecf1, str* ecf2, struct impurecord** _r) {
int res;
struct ims_subscription_s* subscription, *subs_ptr = 0;
int leave_slot_locked = 1;
int subscription_locked = 0;
str private_identity = {0, 0};
str* impu_str = public_identity;
//make usre we have IMPU or enough data to find it...
if (!impu_rec && (!public_identity || !public_identity->len || !public_identity->s)) {
LM_WARN("can't call update_impurecord with no details of IMPU..n");
return -1;
}
/* before we get started let's check if we already have subscription data for this impi */
if (s && *s) {
subs_ptr = (*s);
res = get_subscription(&(*s)->private_identity, &subscription, leave_slot_locked); //leave slot locked in case we need to add.... don't want racing adds
if (res != 0) {
LM_DBG("No subscription yet for [%.*s]... adding\n", (*s)->private_identity.len, (*s)->private_identity.s);
ref_subscription_unsafe(subs_ptr); //we reference coz we are using it - will be unreferenced later.
add_subscription_unsafe(subs_ptr);
unlock_subscription_slot(subs_ptr->sl);
} else {
//TODO: we may want to do a deep comparison of the subscription and update....
if (compare_subscription(subs_ptr, subscription) != 0) {
subs_ptr = subscription;
} else {
// Treat it as a new Subscription - it's not the same as the previous one
ref_subscription_unsafe(subs_ptr); //we reference coz we are using it - will be unreferenced later.
add_subscription_unsafe(subs_ptr);
unlock_subscription_slot(subs_ptr->sl);
}
}
lock_subscription(subs_ptr);
subscription_locked = 1;
private_identity = (*s)->private_identity;
}
if (impu_rec) {
LM_DBG("We already have impurecord....\n");
(*_r) = impu_rec;
impu_str = &(*_r)->public_identity;
} else {
res = get_impurecord(_d, impu_str, _r); //return with lock on the domain
if (res != 0) {
if (reg_state != IMPU_NOT_REGISTERED && s) {
LM_DBG("No existing impu record for <%.*s>.... creating new one\n", impu_str->len, impu_str->s);
res = insert_impurecord(_d, impu_str, &private_identity, reg_state, barring, &subs_ptr, ccf1, ccf2, ecf1, ecf2, _r);
if (res != 0) {
LM_ERR("Unable to insert new IMPU for <%.*s>\n", impu_str->len, impu_str->s);
// unlock_udomain(_d, impu_str);
goto error;
} else {
//for the first time we create an IMPU we must set the primary record (we don't worry about it on updates - ignored)
(*_r)->is_primary = is_primary; //TODO = this should prob move to insert_impurecord fn
if (reg_state == IMPU_UNREGISTERED) {
//update unreg expiry so the unreg record is not stored 'forever'
(*_r)->expires = time(NULL) + unreg_validity;
}
run_ul_callbacks(NULL, UL_IMPU_INSERT, *_r, NULL);
if (subscription_locked) {
unref_subscription_unsafe(subs_ptr);
unlock_subscription(subs_ptr);
}
// unlock_udomain(_d, impu_str);
return 0;
}
} else {
LM_DBG("no IMPU found to update and data not valid to create new one - not a problem record was probably removed as it has no contacts\n");
if (subscription_locked) {
unref_subscription_unsafe(subs_ptr);
unlock_subscription(subs_ptr);
}
return 0;
}
}
}
//if we get here, we have a record to update
LM_DBG("updating IMPU record with public identity for <%.*s>\n", impu_str->len, impu_str->s);
(*_r)->reg_state = reg_state;
if (reg_state == IMPU_UNREGISTERED) {
//update unreg expiry so the unreg record is not stored 'forever'
(*_r)->expires = time(NULL) + unreg_validity;
}
if (barring >= 0) (*_r)->barring = barring;
if (send_sar_on_delete >= 0) (*_r)->send_sar_on_delete = send_sar_on_delete;
if (ccf1) {
if ((*_r)->ccf1.s)
shm_free((*_r)->ccf1.s);
STR_SHM_DUP((*_r)->ccf1, *ccf1, "SHM CCF1");
}
if (ccf2) {
if ((*_r)->ccf2.s)
shm_free((*_r)->ccf2.s);
STR_SHM_DUP((*_r)->ccf2, *ccf2, "SHM CCF2");