Function _int_pv_set_branch_fields

pvar.c:3587–3721

static int _int_pv_set_branch_fields(struct sip_msg* msg, pv_param_t *param,
		int op, pv_value_t *val, int field, int has_ruri_branch)
{
	int size, is_ruri_branch = 0;
	int idx;
	int idxf;
	str *s;
	qvalue_t q;
	unsigned int flags;
	const struct socket_info *si;

	if (msg==NULL || param==NULL) {
		LM_ERR("bad parameters\n");
		return -1;
	}

	if (msg->first_line.type == SIP_REPLY)
		return -1;

	/* get the index */
	if (pv_get_spec_index(msg, param, &idx, &idxf)!=0) {
		LM_ERR("invalid index\n");
		return -1;
	}

	if (idxf==PV_IDX_ALL) {
		LM_ERR("SCRIPT BUG - * not allowed in branch assignment\n");
		return -1;
	}

	if (has_ruri_branch) {
		size = get_dset_size() + 1 ;
		/* no branch set, consider the last one */
		if (idxf==0 && idx==0)
			idx = size - 1;
		else
		/* if negative, count from the end */
		if (idx<0)
			idx = size + idx;
		/* now evaluate and ajust the idx to dset only */
		if (idx==0) {
			is_ruri_branch = 1;
		} else {
			/* offset with -1 */
			idx--;
		}
	} else {
		size = get_dset_size();
		/* if negative, count from the end */
		if (idx<0)
			idx = size + idx;
	}

	if (!is_ruri_branch) {
		/* if not RURI branch, it is a msg branch, so check the idx*/
		if (idx<0 || idx>=get_dset_size()) {
			LM_ERR("inexisting branch assignment [%d/%d]\n", size, idx);
			return -1;