/*!
* \brief Evaluate kazoo transformations
* \param msg SIP message
* \param tp transformation
* \param subtype transformation type
* \param val pseudo-variable
* \return 0 on success, -1 on error
*/
int kz_tr_eval(struct sip_msg *msg, tr_param_t *tp, int subtype, pv_value_t *val)
{
if(val==NULL || (val->flags&PV_VAL_NULL))
return -1;
char* tofree = NULL;
int oldflags = 0;
kz_tr_set_crt_buffer();
switch(subtype)
{
case TR_KAZOO_ENCODE:
if(!(val->flags&PV_VAL_STR))
return -1;
oldflags = val->flags;
tofree = val->rs.s;
if( kz_amqp_encode_ex(&val->rs, val ) != 1) {
LM_ERR("error encoding value\n");
return -1;
}
// it seems that val memory is not freed
// event with flag set to PV_VAL_PKG
strncpy(_kz_tr_buffer, val->rs.s, val->rs.len);
if(val->flags & PV_VAL_PKG)
pkg_free(val->rs.s);
else if(val->flags & PV_VAL_SHM)
shm_free(val->rs.s);
_kz_tr_buffer[val->rs.len] = '\0';
val->flags = PV_VAL_STR;
val->ri = 0;
val->rs.s = _kz_tr_buffer;
if(oldflags & PV_VAL_PKG) {
pkg_free(tofree);
} else if(oldflags & PV_VAL_SHM) {
shm_free(tofree);
}
break;
case TR_KAZOO_JSON:
if(tp==NULL)
{
LM_ERR("kazoo json transform invalid parameter\n");
return -1;
}
oldflags = val->flags;
tofree = val->rs.s;
if(kz_json_get_field_ex(&val->rs, &tp->v.s, val ) != 1) {
LM_ERR("error getting json\n");
return -1;
}
// it seems that val memory is not freed
// event with flag set to PV_VAL_PKG
strncpy(_kz_tr_buffer, val->rs.s, val->rs.len);
if(val->flags & PV_VAL_PKG)
pkg_free(val->rs.s);
else if(val->flags & PV_VAL_SHM)
shm_free(val->rs.s);
_kz_tr_buffer[val->rs.len] = '\0';
val->flags = PV_VAL_STR;
val->ri = 0;
val->rs.s = _kz_tr_buffer;
if(oldflags & PV_VAL_PKG) {
pkg_free(tofree);
} else if(oldflags & PV_VAL_SHM) {
shm_free(tofree);
}
break;
default:
LM_ERR("unknown kazoo transformation subtype %d\n", subtype);
return -1;
}
return 0;
}
/*!
* \brief Evaluate kazoo transformations
* \param msg SIP message
* \param tp transformation
* \param subtype transformation type
* \param val pseudo-variable
* \return 0 on success, -1 on error
*/
int kz_tr_eval(struct sip_msg *msg, tr_param_t *tp, int subtype, pv_value_t *val)
{
str sv;
pv_value_t* pv;
pv_value_t v;
str v2 = {0,0};
void* v1 = NULL;
if(val==NULL || (val->flags&PV_VAL_NULL))
return -1;
kz_tr_set_crt_buffer();
switch(subtype)
{
case TR_KAZOO_ENCODE:
if(!(val->flags&PV_VAL_STR))
return -1;
pv = kz_alloc_pv_value();
if(pv == NULL)
{
LM_ERR("kazoo encode transform : no more private memory\n");
return -1;
}
if( kz_amqp_encode_ex(&val->rs, pv ) != 1) {
LM_ERR("error encoding value\n");
kz_destroy_pv_value(pv);
return -1;
}
strncpy(_kz_tr_buffer, pv->rs.s, pv->rs.len);
_kz_tr_buffer[pv->rs.len] = '\0';
val->flags = PV_VAL_STR;
val->ri = 0;
val->rs.s = _kz_tr_buffer;
val->rs.len = pv->rs.len;
kz_destroy_pv_value(pv);
kz_free_pv_value(val);
break;
case TR_KAZOO_JSON:
if(!(val->flags&PV_VAL_STR))
return -1;
if(tp==NULL)
{
LM_ERR("kazoo json transform invalid parameter\n");
return -1;
}
pv = kz_alloc_pv_value();
if(pv == NULL)
{
LM_ERR("kazoo encode transform : no more private memory\n");
return -1;
}
if(tp->type == TR_PARAM_STRING)
{
v1 = tp->v.s.s;
if(fixup_spve_null(&v1, 1) != 0) {
LM_ERR("cannot get spve_value from TR_PARAM_STRING : %.*s\n", tp->v.s.len, tp->v.s.s);
return -1;
}
if (fixup_get_svalue(msg, (gparam_p)v1, &v2) != 0) {
LM_ERR("cannot get value from TR_PARAM_STRING\n");
fixup_free_spve_null(&v1, 1);
return -1;
}
fixup_free_spve_null(&v1, 1);
sv = v2;
} else {
if(pv_get_spec_value(msg, (pv_spec_p)tp->v.data, &v)!=0
|| (!(v.flags&PV_VAL_STR)) || v.rs.len<=0)
{
LM_ERR("value cannot get spec value in json transform\n");
kz_destroy_pv_value(pv);
return -1;
}
sv = v.rs;
}
if(kz_json_get_field_ex(&val->rs, &sv, pv ) != 1) {
LM_ERR("error getting json\n");
kz_destroy_pv_value(pv);
return -1;
}
strncpy(_kz_tr_buffer, pv->rs.s, pv->rs.len);
_kz_tr_buffer[pv->rs.len] = '\0';
val->flags = PV_VAL_STR;
val->ri = 0;
val->rs.s = _kz_tr_buffer;
val->rs.len = pv->rs.len;
kz_destroy_pv_value(pv);
kz_free_pv_value(val);
break;
default:
LM_ERR("unknown kazoo transformation subtype %d\n", subtype);
return -1;
}
return 0;
}
