Function build_rule

modules/dialplan/dp_db.c:467–610

compile the expressions, and if ok, build the rule */

/*compile the expressions, and if ok, build the rule */
dpl_node_t * build_rule(db_val_t * values)
{
	tmrec_expr *parsed_timerec;
	pcre2_code * match_comp, *subst_comp;
	struct subst_expr * repl_comp;
	dpl_node_t * new_rule;
	str match_exp, subst_exp, repl_exp, attrs, timerec;
	int matchop;
	uint32_t namecount;

	matchop = VAL_INT(values+2);

	if((matchop != REGEX_OP) && (matchop!=EQUAL_OP)){
		LM_ERR("invalid value for match operator\n");
		return NULL;
	}

	parsed_timerec = 0;
	match_comp = subst_comp = 0;
	repl_comp = 0;
	new_rule = 0;

	GET_STR_VALUE(match_exp, values, 3, 0);
	if(matchop == REGEX_OP){

		LM_DBG("Compiling %.*s expression with flag: %d\n",
				match_exp.len, match_exp.s, VAL_INT(values+4));

		match_comp = wrap_pcre_compile(match_exp.s, VAL_INT(values+4));

		if(!match_comp){
			LM_ERR("failed to compile match expression \"%.*s\"\n",
				match_exp.len, match_exp.s);
			goto err;
		}
	}

	LM_DBG("building subst rule\n");
	GET_STR_VALUE(subst_exp, values, 5, 1);
	if(!VAL_NULL(values+5) && subst_exp.s && subst_exp.len){
		/* subst regexp */
		subst_comp = wrap_pcre_compile(subst_exp.s, VAL_INT(values+4));
		if(subst_comp == NULL){
			LM_ERR("failed to compile subst expression \"%.*s\"\n",
					subst_exp.len, subst_exp.s);
			goto err;
		}
	}

	/* replace exp */
	GET_STR_VALUE(repl_exp, values, 6, 1);
	if(!VAL_NULL(values+6) && repl_exp.len && repl_exp.s){
		repl_comp = repl_exp_parse(repl_exp);
		if(!repl_comp){
			LM_ERR("failed to compile replacing expression \"%.*s\"\n",
				repl_exp.len, repl_exp.s);
			goto err;
		}