/*! \brief
* Check if the originating REGISTER message was formed correctly
* The whole message must be parsed before calling the function
* _s indicates whether the contact was star
*/
int check_contacts(struct sip_msg* _m, int* _s)
{
struct hdr_field* p;
contact_t* c;
*_s = 0;
/* Message without contacts is OK */
if (_m->contact == 0) return 0;
if (((contact_body_t*)_m->contact->parsed)->star == 1) {
/* The first Contact HF is star */
/* Expires must be zero */
if (get_expires_hf(_m) > 0) {
rerrno = R_STAR_EXP;
return 1;
}
/* Message must contain no contacts */
if (((contact_body_t*)_m->contact->parsed)->contacts) {
rerrno = R_STAR_CONT;
return 1;
}
/* Message must contain no other Contact HFs */
p = _m->contact->next;
while(p) {
if (p->type == HDR_CONTACT_T) {
rerrno = R_STAR_CONT;
return 1;
}
p = p->next;
}
*_s = 1;
} else { /* The first Contact HF is not star */
/* Message must contain no star Contact HF */
p = _m->contact->next;
while(p) {
if (p->type == HDR_CONTACT_T) {
if (((contact_body_t*)p->parsed)->star == 1) {
rerrno = R_STAR_CONT;
return 1;
}
/* check also the lenght of all contacts */
for(c=((contact_body_t*)p->parsed)->contacts ; c ; c=c->next) {
if (c->uri.len > CONTACT_MAX_SIZE
|| (c->received && c->received->len>RECEIVED_MAX_SIZE) ) {
rerrno = R_CONTACT_LEN;
return 1;
}
}
}
p = p->next;
}
}
return 0;
}
/*
* Check if the originating REGISTER message was formed correctly
* The whole message must be parsed before calling the function
* _s indicates whether the contact was star
*/
int check_contacts(struct sip_msg* _m, int* _s)
{
struct hdr_field* p;
*_s = 0;
/* Message without contacts is OK */
if (_m->contact == 0) return 0;
if (((contact_body_t*)_m->contact->parsed)->star == 1) { /* The first Contact HF is star */
/* Expires must be zero */
if (get_expires_hf(_m) > 0) {
rerrno = R_STAR_EXP;
return 1;
}
/* Message must contain no contacts */
if (((contact_body_t*)_m->contact->parsed)->contacts) {
rerrno = R_STAR_CONT;
return 1;
}
/* Message must contain no other Contact HFs */
p = _m->contact->next;
while(p) {
if (p->type == HDR_CONTACT_T) {
rerrno = R_STAR_CONT;
return 1;
}
p = p->next;
}
*_s = 1;
} else { /* The first Contact HF is not star */
/* Message must contain no star Contact HF */
p = _m->contact->next;
while(p) {
if (p->type == HDR_CONTACT_T) {
if (((contact_body_t*)p->parsed)->star == 1) {
rerrno = R_STAR_CONT;
return 1;
}
}
p = p->next;
}
}
return 0;
}
/*! \brief
* Calculate absolute expires value per contact as follows:
* 1) If the contact has expires value, use the value. If it
* is not zero, add actual time to it
* 2) If the contact has no expires parameter, use expires
* header field in the same way
* 3) If the message contained no expires header field, use
* the default value
*/
void calc_contact_expires(struct sip_msg* _m, param_t* _ep, int* _e)
{
if (!_ep || !_ep->body.len) {
*_e = get_expires_hf(_m);
} else {
if (str2int(&_ep->body, (unsigned int*)_e) < 0) {
*_e = get_expire_val();
}
/* Convert to absolute value */
if (*_e != 0) *_e += act_time;
}
if ((*_e != 0) && ((*_e - act_time) < cfg_get(registrar, registrar_cfg, min_expires))) {
*_e = cfg_get(registrar, registrar_cfg, min_expires) + act_time;
}
if ((*_e != 0) && cfg_get(registrar, registrar_cfg, max_expires) && ((*_e - act_time) > cfg_get(registrar, registrar_cfg, max_expires))) {
*_e = cfg_get(registrar, registrar_cfg, max_expires) + act_time;
}
}
/*
* Calculate absolute expires value per contact as follows:
* 1) If the contact has expires value, use the value. If it
* is not zero, add actual time to it
* 2) If the contact has no expires parameter, use expires
* header field in the same way
* 3) If the message contained no expires header field, use
* the default value
*/
void calc_contact_expires(struct sip_msg* _m, param_t* _ep, int* _e)
{
if (!_ep || !_ep->body.len) {
*_e = get_expires_hf(_m);
} else {
if (str2int(&_ep->body, (unsigned int*)_e) < 0) {
*_e = default_expires;
}
/* Convert to absolute value */
if (*_e != 0) *_e += act_time;
}
if ((*_e != 0) && ((*_e - act_time) < min_expires)) {
*_e = min_expires + act_time;
}
if ((*_e != 0) && max_expires && ((*_e - act_time) > max_expires)) {
*_e = max_expires + act_time;
}
}
/*! \brief
* Calculate absolute expires value per contact as follows:
* 1) If the contact has expires value, use the value. If it
* is not zero, add actual time to it
* 2) If the contact has no expires parameter, use expires
* header field in the same way
* 3) If the message contained no expires header field, use
* the default value
*/
void calc_contact_expires(struct sip_msg* _m, param_t* _ep, int* _e, int novariation)
{
int range = 0;
if (!_ep || !_ep->body.len) {
*_e = get_expires_hf(_m);
if ( *_e < 0 ) {
*_e = cfg_get(registrar, registrar_cfg, default_expires);
range = cfg_get(registrar, registrar_cfg, default_expires_range);
} else {
range = cfg_get(registrar, registrar_cfg, expires_range);
}
} else {
if (str2int(&_ep->body, (unsigned int*)_e) < 0) {
*_e = cfg_get(registrar, registrar_cfg, default_expires);
range = cfg_get(registrar, registrar_cfg, default_expires_range);
} else {
range = cfg_get(registrar, registrar_cfg, expires_range);
}
}
if ( *_e != 0 )
{
if (!novariation) {
*_e = randomize_expires( *_e, range );
}
if (*_e < cfg_get(registrar, registrar_cfg, min_expires)) {
*_e = cfg_get(registrar, registrar_cfg, min_expires);
}
if (cfg_get(registrar, registrar_cfg, max_expires) && (*_e > cfg_get(registrar, registrar_cfg, max_expires))) {
*_e = cfg_get(registrar, registrar_cfg, max_expires);
}
/* Convert to absolute value */
*_e += act_time;
}
}
/*! \brief
* Check if the originating REGISTER message was formed correctly
* The whole message must be parsed before calling the function
* _s indicates whether the contact was star
*/
int check_contacts(struct sip_msg* _m, int* _s)
{
struct hdr_field* p;
contact_t* c;
*_s = 0;
/* Message without contacts is OK */
if (_m->contact == 0) return 0;
if (((contact_body_t*)_m->contact->parsed)->star == 1) {
/* The first Contact HF is star */
/* Expires must be zero */
if (get_expires_hf(_m) != 0) {
LM_WARN("expires must be 0 for star contact\n");
rerrno = R_STAR_EXP;
return 1;
}
/* Message must contain no contacts */
if (((contact_body_t*)_m->contact->parsed)->contacts) {
LM_WARN("star contact cannot be mixed with other contacts\n");
rerrno = R_STAR_CONT;
return 1;
}
/* Message must contain no other Contact HFs */
p = _m->contact->next;
while(p) {
if (p->type == HDR_CONTACT_T) {
LM_WARN("star contact cannot be mixed with other contacts\n");
rerrno = R_STAR_CONT;
return 1;
}
p = p->next;
}
*_s = 1;
} else { /* The first Contact HF is not star */
p = _m->contact;
while(p) {
if (p->type == HDR_CONTACT_T) {
/* Message must contain no star Contact HF */
if (((contact_body_t*)p->parsed)->star == 1) {
LM_WARN("star contact cannot be mixed with other contacts\n");
rerrno = R_STAR_CONT;
return 1;
}
/* check also the length of all contacts */
for(c=((contact_body_t*)p->parsed)->contacts ; c ; c=c->next) {
if (c->uri.len > contact_max_size) {
LM_WARN("contact uri is too long: [%.*s]\n", c->uri.len, c->uri.s);
rerrno = R_CONTACT_LEN;
return 1;
}
if (c->received && c->received->len>RECEIVED_MAX_SIZE) {
LM_WARN("received attribute of contact is too long\n");
rerrno = R_CONTACT_LEN;
return 1;
}
}
}
p = p->next;
}
}
return 0;
}
