sip-router

it would improve dynamic configuration of sip proxy if a function or transformation would exist for evaluating a string value stored in a pseudo variable that contains pseudo variables, transformations, etc.

i tried to implement such function (below), but was not able to make it work. any help is appreciated.

-- juha


/*
* Evaluates first param (string) and saves result to second param (pvar)
*/
int eval(struct sip_msg* _m, char* _string, char* _dst)
{
str value, result;
char **param;
pv_spec_t *dst;
pv_value_t val;
fparam_t *fp;

if (fixup_get_svalue(_m, (gparam_p)_string, &value) != 0) {
LM_ERR("cannot get parameter value\n");
return -1;
}

param = &(value.s);
LM_INFO("param value as string is <%s>\n", *param);

if (fixup_spve_null((void **)param, 1) != 0) {
LM_ERR("failed to evaluate parameter <%.*s>\n", value.len, value.s);
return -1;
}

fp = (fparam_t *)param;

LM_INFO("orig <%s>, type <%d>\n", fp->orig, fp->type);
if (get_str_fparam(&result, _m, fp) != 0) {
LM_ERR("cannot get result value\n");
return -1;
}

val.rs.s = result.s;
val.rs.len = result.len;
LM_INFO("eval result: %.*s\n", val.rs.len, val.rs.s);
val.flags = PV_VAL_STR;
dst = (pv_spec_t *)_dst;
dst->setf(_m, &dst->pvp, (int)EQ_T, &val);

return 1;
}