Function db_bind_mod

db/db.c:191–287

fills mydbf with the corresponding db module callbacks * returns 0 on success, -1 on error * on error mydbf will contain only 0s */

 * returns 0 on success, -1 on error
 * on error mydbf will contain only 0s */
int db_bind_mod(const str* mod, db_func_t* mydbf)
{
	char *name, *tmp, *p;
	int len;
	db_func_t dbf;
	db_bind_api_f dbind;

	if (!mod || !mod->s) {
		LM_CRIT("null database module name\n");
		return -1;
	}
	if (mydbf==0) {
		LM_CRIT("null dbf parameter\n");
		return -1;
	}
	if (mod->len > MAX_URL_LENGTH)
	{
		LM_ERR("SQL URL too long\n");
		return 0;
	}
	// add the prefix
	name = pkg_malloc(mod->len + 4);
	if (!name) {
		LM_ERR("no private memory left\n");
		return -1;
	}
	memcpy(name, "db_", 3);
	memcpy(name+3, mod->s, mod->len);
	name[mod->len+3] = 0;

	/* for safety we initialize mydbf with 0 (this will cause
	 *  a segfault immediately if someone tries to call a function
	 *  from it without checking the return code from bind_dbmod */
	memset((void*)mydbf, 0, sizeof(db_func_t));

	p = strchr(name, ':');
	if (p) {
		len = p - name;
		tmp = (char*)pkg_malloc(len + 4);
		if (!tmp) {
			LM_ERR("no private memory left\n");
			pkg_free(name);
			return -1;
		}
		memcpy(tmp, name, len);
		tmp[len] = '\0';
		pkg_free(name);
	} else {
		tmp = name;
	}

	dbind = (db_bind_api_f)find_mod_export(tmp, "db_bind_api", 0);
	if(dbind != NULL)
	{
		LM_DBG("using db bind api for %s\n", tmp);
		if(dbind(mod, &dbf)<0)
		{
			LM_ERR("db_bind_api returned error for module %s\n", tmp);