/*! \brief
* Return value of Expires header field
* if the HF exists converted to absolute
* time, if the HF doesn't exist, returns
* default value;
*/
static inline int get_expires_hf(struct sip_msg* _m) {
exp_body_t* p;
if (_m->expires) {
p = (exp_body_t*) _m->expires->parsed;
if (p->valid) {
if (p->val != 0) {
return p->val + act_time;
} else
return 0;
} else {
return act_time + get_expire_val();
}
} else
return act_time + get_expire_val();
}
/*! \brief
* Return value of Expires header field
* if the HF exists converted to absolute
* time, if the HF doesn't exist, returns
* default value;
*/
static inline int get_expires_hf(struct sip_msg* _m)
{
exp_body_t* p;
int range;
if (_m->expires) {
p = (exp_body_t*)_m->expires->parsed;
if (p->valid) {
if (p->val != 0) {
range = cfg_get(registrar, registrar_cfg, default_expires_range);
if(likely(range==0))
return p->val + act_time;
return p->val + act_time - (float)range/100 * p->val
+ ((float)(rand()%100)/100) * ((float)range/100 * p->val);
} else return 0;
} else {
return act_time + get_expire_val();
}
} else
return act_time + get_expire_val();
}
/*! \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;
}
}
