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void zbx_function_param_parse_ext(const char *expr, zbx_uint32_t allowed_macros, int esc_bs, size_t *param_pos,/*** Copyright (C) 2001-2025 Zabbix SIA**** This program is free software: you can redistribute it and/or modify it under the terms of** the GNU Affero General Public License as published by the Free Software Foundation, version 3.**** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.** See the GNU Affero General Public License for more details.**** You should have received a copy of the GNU Affero General Public License along with this program.** If not, see <https://www.gnu.org/licenses/>.**//****************************************************************************** * * * Return value: SUCCEED - char is allowed in trigger function * * FAIL - otherwise * * * * Comments: in trigger function allowed characters: 'a-z' * * !!! Don't forget to sync the code with PHP !!! * * * ******************************************************************************/int zbx_is_function_char(unsigned char c){ if (0 != islower(c)) return SUCCEED; return FAIL;}/****************************************************************************** * * * Purpose: validates parameters and gives position of terminator if found * * and not quoted * * * * Parameters: expr - [IN] string to parse that contains parameters * * terminator - [IN] use ')' if parameters end with * * parenthesis or '\0' if ends with NULL * * terminator * * par_r - [OUT] position of the terminator if found * * lpp_offset - [OUT] offset of the last parsed parameter * * lpp_len - [OUT] length of the last parsed parameter * * * * Return value: SUCCEED - Closing parenthesis was found or other custom * * terminator and not quoted and return info about a * * last processed parameter. * * FAIL - Does not look like valid function parameter list * * and return info about a last processed parameter. * * * ******************************************************************************/static int function_validate_parameters(const char *expr, char terminator, size_t *par_r, size_t *lpp_offset, size_t *lpp_len){