mirror of
https://github.com/php/php-src.git
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cd32cab680
(MOPB-24 by Stefan Esser)
665 lines
17 KiB
C
665 lines
17 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2007 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Derick Rethans <derick@php.net> |
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| Pierre-A. Joye <pierre@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "php_filter.h"
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#include "filter_private.h"
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#include "ext/standard/url.h"
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#include "ext/pcre/php_pcre.h"
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#include "zend_multiply.h"
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#if HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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#define LONG_SIGN_MASK (1L << (8*sizeof(long)-1))
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#ifndef INADDR_NONE
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# define INADDR_NONE ((unsigned long int) -1)
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#endif
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/* {{{ FETCH_LONG_OPTION(var_name, option_name) */
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#define FETCH_LONG_OPTION(var_name, option_name) \
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var_name = 0; \
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var_name##_set = 0; \
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if (option_array) { \
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if (zend_hash_find(HASH_OF(option_array), option_name, sizeof(option_name), (void **) &option_val) == SUCCESS) { \
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PHP_FILTER_GET_LONG_OPT(option_val, var_name); \
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var_name##_set = 1; \
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} \
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}
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/* }}} */
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/* {{{ FETCH_STRING_OPTION(var_name, option_name) */
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#define FETCH_STRING_OPTION(var_name, option_name) \
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var_name = NULL; \
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var_name##_set = 0; \
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var_name##_len = 0; \
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if (option_array) { \
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if (zend_hash_find(HASH_OF(option_array), option_name, sizeof(option_name), (void **) &option_val) == SUCCESS) { \
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if (Z_TYPE_PP(option_val) == IS_STRING) { \
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var_name = Z_STRVAL_PP(option_val); \
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var_name##_len = Z_STRLEN_PP(option_val); \
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var_name##_set = 1; \
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} \
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} \
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}
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/* }}} */
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#define FORMAT_IPV4 4
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#define FORMAT_IPV6 6
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static int php_filter_parse_int(const char *str, unsigned int str_len, long *ret TSRMLS_DC) { /* {{{ */
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long ctx_value;
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long sign = 1;
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const char *end = str + str_len;
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double dval;
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long overflow;
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switch (*str) {
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case '-':
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sign = -1;
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case '+':
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str++;
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default:
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break;
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}
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/* must start with 1..9*/
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if (str < end && *str >= '1' && *str <= '9') {
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ctx_value = ((*(str++)) - '0');
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} else {
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return -1;
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}
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while (str < end) {
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if (*str >= '0' && *str <= '9') {
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ZEND_SIGNED_MULTIPLY_LONG(ctx_value, 10, ctx_value, dval, overflow);
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if (overflow) {
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return -1;
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}
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ctx_value += ((*(str++)) - '0');
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if (ctx_value & LONG_SIGN_MASK) {
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return -1;
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}
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} else {
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return -1;
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}
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}
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*ret = ctx_value * sign;
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return 1;
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}
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/* }}} */
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static int php_filter_parse_octal(const char *str, unsigned int str_len, long *ret TSRMLS_DC) { /* {{{ */
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unsigned long ctx_value = 0;
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const char *end = str + str_len;
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while (str < end) {
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if (*str >= '0' && *str <= '7') {
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unsigned long n = ((*(str++)) - '0');
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if ((ctx_value > ((unsigned long)(~(long)0)) / 8) ||
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((ctx_value = ctx_value * 8) > ((unsigned long)(~(long)0)) - n)) {
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return -1;
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}
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ctx_value += n;
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} else {
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return -1;
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}
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}
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*ret = (long)ctx_value;
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return 1;
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}
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/* }}} */
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static int php_filter_parse_hex(const char *str, unsigned int str_len, long *ret TSRMLS_DC) { /* {{{ */
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unsigned long ctx_value = 0;
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const char *end = str + str_len;
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unsigned long n;
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while (str < end) {
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if (*str >= '0' && *str <= '9') {
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n = ((*(str++)) - '0');
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} else if (*str >= 'a' && *str <= 'f') {
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n = ((*(str++)) - ('a' - 10));
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} else if (*str >= 'A' && *str <= 'F') {
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n = ((*(str++)) - ('A' - 10));
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} else {
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return -1;
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}
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if ((ctx_value > ((unsigned long)(~(long)0)) / 16) ||
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((ctx_value = ctx_value * 16) > ((unsigned long)(~(long)0)) - n)) {
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return -1;
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}
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ctx_value += n;
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}
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*ret = (long)ctx_value;
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return 1;
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}
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/* }}} */
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void php_filter_int(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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zval **option_val;
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long min_range, max_range, option_flags;
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int min_range_set, max_range_set;
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int allow_octal = 0, allow_hex = 0;
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int len, error = 0;
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long ctx_value;
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char *p;
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/* Parse options */
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FETCH_LONG_OPTION(min_range, "min_range");
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FETCH_LONG_OPTION(max_range, "max_range");
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option_flags = flags;
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len = Z_STRLEN_P(value);
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if (len == 0) {
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RETURN_VALIDATION_FAILED
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}
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if (option_flags & FILTER_FLAG_ALLOW_OCTAL) {
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allow_octal = 1;
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}
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if (option_flags & FILTER_FLAG_ALLOW_HEX) {
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allow_hex = 1;
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}
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/* Start the validating loop */
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p = Z_STRVAL_P(value);
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ctx_value = 0;
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PHP_FILTER_TRIM_DEFAULT(p, len);
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if (*p == '0') {
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p++; len--;
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if (allow_hex && (*p == 'x' || *p == 'X')) {
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p++; len--;
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if (php_filter_parse_hex(p, len, &ctx_value TSRMLS_CC) < 0) {
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error = 1;
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}
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} else if (allow_octal) {
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if (php_filter_parse_octal(p, len, &ctx_value TSRMLS_CC) < 0) {
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error = 1;
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}
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} else if (len != 0) {
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error = 1;
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}
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} else {
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if (php_filter_parse_int(p, len, &ctx_value TSRMLS_CC) < 0) {
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error = 1;
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}
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}
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if (error > 0 || (min_range_set && (ctx_value < min_range)) || (max_range_set && (ctx_value > max_range))) {
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RETURN_VALIDATION_FAILED
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} else {
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zval_dtor(value);
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Z_TYPE_P(value) = IS_LONG;
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Z_LVAL_P(value) = ctx_value;
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return;
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}
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}
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/* }}} */
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void php_filter_boolean(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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char *str = Z_STRVAL_P(value);
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int len = Z_STRLEN_P(value);
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int ret;
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PHP_FILTER_TRIM_DEFAULT(str, len);
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/* returns true for "1", "true", "on" and "yes"
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* returns false for "0", "false", "off", "no", and ""
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* null otherwise. */
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switch (len) {
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case 1:
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if (*str == '1') {
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ret = 1;
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} else if (*str == '0') {
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ret = 0;
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} else {
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ret = -1;
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}
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break;
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case 2:
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if (strncasecmp(str, "on", 2) == 0) {
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ret = 1;
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} else if (strncasecmp(str, "no", 2) == 0) {
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ret = 0;
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} else {
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ret = -1;
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}
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break;
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case 3:
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if (strncasecmp(str, "yes", 3) == 0) {
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ret = 1;
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} else if (strncasecmp(str, "off", 3) == 0) {
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ret = 0;
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} else {
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ret = -1;
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}
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break;
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case 4:
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if (strncasecmp(str, "true", 4) == 0) {
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ret = 1;
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} else {
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ret = -1;
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}
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break;
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case 5:
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if (strncasecmp(str, "false", 5) == 0) {
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ret = 0;
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} else {
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ret = -1;
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}
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break;
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default:
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ret = -1;
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}
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if (ret == -1) {
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RETURN_VALIDATION_FAILED
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} else {
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zval_dtor(value);
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ZVAL_BOOL(value, ret);
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}
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}
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/* }}} */
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void php_filter_float(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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int len;
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char *str, *end;
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char *num, *p;
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zval **option_val;
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char *decimal;
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int decimal_set, decimal_len;
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char dec_sep = '.';
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char tsd_sep[3] = "',.";
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long lval;
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double dval;
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int first, n;
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len = Z_STRLEN_P(value);
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str = Z_STRVAL_P(value);
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PHP_FILTER_TRIM_DEFAULT(str, len);
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end = str + len;
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FETCH_STRING_OPTION(decimal, "decimal");
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if (decimal_set) {
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if (decimal_len != 1) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "decimal separator must be one char");
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RETURN_VALIDATION_FAILED
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} else {
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dec_sep = *decimal;
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}
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}
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num = p = emalloc(len+1);
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if (str < end && (*str == '+' || *str == '-')) {
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*p++ = *str++;
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}
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first = 1;
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while (1) {
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n = 0;
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while (str < end && *str >= '0' && *str <= '9') {
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++n;
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*p++ = *str++;
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}
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if (str == end || *str == dec_sep || *str == 'e' || *str == 'E') {
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if (!first && n != 3) {
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goto error;
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}
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if (*str == dec_sep) {
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*p++ = '.';
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str++;
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while (str < end && *str >= '0' && *str <= '9') {
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*p++ = *str++;
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}
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}
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if (*str == 'e' || *str == 'E') {
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*p++ = *str++;
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if (str < end && (*str == '+' || *str == '-')) {
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*p++ = *str++;
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}
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while (str < end && *str >= '0' && *str <= '9') {
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*p++ = *str++;
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}
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}
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break;
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}
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if ((flags & FILTER_FLAG_ALLOW_THOUSAND) && (*str == tsd_sep[0] || *str == tsd_sep[1] || *str == tsd_sep[2])) {
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if (first?(n < 1 || n > 3):(n != 3)) {
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goto error;
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}
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first = 0;
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str++;
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} else {
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goto error;
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}
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}
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if (str != end) {
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goto error;
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}
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*p = 0;
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switch (is_numeric_string(num, p - num, &lval, &dval, 0)) {
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case IS_LONG:
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zval_dtor(value);
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Z_TYPE_P(value) = IS_DOUBLE;
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Z_DVAL_P(value) = lval;
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break;
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case IS_DOUBLE:
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if ((!dval && p - num > 1 && strpbrk(num, "123456789")) || !zend_finite(dval)) {
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goto error;
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}
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zval_dtor(value);
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Z_TYPE_P(value) = IS_DOUBLE;
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Z_DVAL_P(value) = dval;
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break;
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default:
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error:
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efree(num);
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RETURN_VALIDATION_FAILED
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}
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efree(num);
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}
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/* }}} */
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void php_filter_validate_regexp(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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zval **option_val;
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char *regexp;
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int regexp_len;
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long option_flags;
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int regexp_set, option_flags_set;
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pcre *re = NULL;
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pcre_extra *pcre_extra = NULL;
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int preg_options = 0;
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int ovector[3];
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int matches;
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/* Parse options */
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FETCH_STRING_OPTION(regexp, "regexp");
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FETCH_LONG_OPTION(option_flags, "flags");
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if (!regexp_set) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "'regexp' option missing");
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RETURN_VALIDATION_FAILED
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}
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re = pcre_get_compiled_regex(regexp, &pcre_extra, &preg_options TSRMLS_CC);
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if (!re) {
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RETURN_VALIDATION_FAILED
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}
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matches = pcre_exec(re, NULL, Z_STRVAL_P(value), Z_STRLEN_P(value), 0, 0, ovector, 3);
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/* 0 means that the vector is too small to hold all the captured substring offsets */
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if (matches < 0) {
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RETURN_VALIDATION_FAILED
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}
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}
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/* }}} */
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void php_filter_validate_url(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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php_url *url;
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int old_len = Z_STRLEN_P(value);
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php_filter_url(value, flags, option_array, charset TSRMLS_CC);
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if (Z_TYPE_P(value) != IS_STRING || old_len != Z_STRLEN_P(value)) {
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RETURN_VALIDATION_FAILED
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}
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/* Use parse_url - if it returns false, we return NULL */
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url = php_url_parse_ex(Z_STRVAL_P(value), Z_STRLEN_P(value));
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if (url == NULL) {
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RETURN_VALIDATION_FAILED
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}
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if (
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url->scheme == NULL ||
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/* some schemas allow the host to be empty */
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(url->host == NULL && (strcmp(url->scheme, "mailto") && strcmp(url->scheme, "news") && strcmp(url->scheme, "file"))) ||
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((flags & FILTER_FLAG_PATH_REQUIRED) && url->path == NULL) || ((flags & FILTER_FLAG_QUERY_REQUIRED) && url->query == NULL)
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) {
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php_url_free(url);
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RETURN_VALIDATION_FAILED
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}
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php_url_free(url);
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}
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/* }}} */
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void php_filter_validate_email(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
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{
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/* From http://cvs.php.net/co.php/pear/HTML_QuickForm/QuickForm/Rule/Email.php?r=1.4 */
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const char regexp[] = "/^((\\\"[^\\\"\\f\\n\\r\\t\\b]+\\\")|([\\w\\!\\#\\$\\%\\&\\'\\*\\+\\-\\~\\/\\^\\`\\|\\{\\}]+(\\.[\\w\\!\\#\\$\\%\\&\\'\\*\\+\\-\\~\\/\\^\\`\\|\\{\\}]+)*))@((\\[(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))\\])|(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))|((([A-Za-z0-9\\-])+\\.)+[A-Za-z\\-]+))$/D";
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pcre *re = NULL;
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pcre_extra *pcre_extra = NULL;
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int preg_options = 0;
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int ovector[150]; /* Needs to be a multiple of 3 */
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int matches;
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|
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re = pcre_get_compiled_regex((char *)regexp, &pcre_extra, &preg_options TSRMLS_CC);
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if (!re) {
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RETURN_VALIDATION_FAILED
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}
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matches = pcre_exec(re, NULL, Z_STRVAL_P(value), Z_STRLEN_P(value), 0, 0, ovector, 3);
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/* 0 means that the vector is too small to hold all the captured substring offsets */
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if (matches < 0) {
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RETURN_VALIDATION_FAILED
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}
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}
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/* }}} */
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static int _php_filter_validate_ipv4(char *str, int str_len, int *ip) /* {{{ */
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{
|
|
const char *end = str + str_len;
|
|
int num, m;
|
|
int n = 0;
|
|
|
|
while (str < end) {
|
|
if (*str < '0' || *str > '9') {
|
|
return 0;
|
|
}
|
|
m = 1;
|
|
num = ((*(str++)) - '0');
|
|
while (str < end && (*str >= '0' && *str <= '9')) {
|
|
num = num * 10 + ((*(str++)) - '0');
|
|
if (num > 255 || ++m > 3) {
|
|
return 0;
|
|
}
|
|
}
|
|
ip[n++] = num;
|
|
if (n == 4) {
|
|
return str == end;
|
|
} else if (str >= end || *(str++) != '.') {
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
static int _php_filter_validate_ipv6(char *str, int str_len TSRMLS_DC) /* {{{ */
|
|
{
|
|
int compressed = 0;
|
|
int blocks = 8;
|
|
int n;
|
|
char *ipv4;
|
|
char *end;
|
|
int ip4elm[4];
|
|
|
|
if (!memchr(str, ':', str_len)) {
|
|
return 0;
|
|
}
|
|
|
|
/* check for bundled IPv4 */
|
|
ipv4 = memchr(str, '.', str_len);
|
|
if (ipv4) {
|
|
while (ipv4 > str && *(ipv4-1) != ':') {
|
|
ipv4--;
|
|
}
|
|
|
|
if (!_php_filter_validate_ipv4(ipv4, (str_len - (ipv4 - str)), ip4elm)) {
|
|
return 0;
|
|
}
|
|
str_len = (ipv4 - str) - 1;
|
|
if (str_len == 1) {
|
|
return *str == ':';
|
|
}
|
|
blocks = 6;
|
|
}
|
|
|
|
end = str + str_len;
|
|
while (str < end) {
|
|
if (*str == ':') {
|
|
if (--blocks == 0) {
|
|
return 0;
|
|
}
|
|
if (++str >= end) {
|
|
return 0;
|
|
}
|
|
if (*str == ':') {
|
|
if (compressed || --blocks == 0) {
|
|
return 0;
|
|
}
|
|
if (++str == end) {
|
|
return 1;
|
|
}
|
|
compressed = 1;
|
|
}
|
|
}
|
|
n = 0;
|
|
while ((str < end) &&
|
|
((*str >= '0' && *str <= '9') ||
|
|
(*str >= 'a' && *str <= 'f') ||
|
|
(*str >= 'A' && *str <= 'F'))) {
|
|
n++;
|
|
str++;
|
|
}
|
|
if (n < 1 || n > 4) {
|
|
return 0;
|
|
}
|
|
}
|
|
return (compressed || blocks == 1);
|
|
}
|
|
/* }}} */
|
|
|
|
void php_filter_validate_ip(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
|
|
{
|
|
/* validates an ipv4 or ipv6 IP, based on the flag (4, 6, or both) add a
|
|
* flag to throw out reserved ranges; multicast ranges... etc. If both
|
|
* allow_ipv4 and allow_ipv6 flags flag are used, then the first dot or
|
|
* colon determine the format */
|
|
|
|
int ip[4];
|
|
int mode;
|
|
|
|
if (memchr(Z_STRVAL_P(value), ':', Z_STRLEN_P(value))) {
|
|
mode = FORMAT_IPV6;
|
|
} else if (memchr(Z_STRVAL_P(value), '.', Z_STRLEN_P(value))) {
|
|
mode = FORMAT_IPV4;
|
|
} else {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
|
|
if (flags & (FILTER_FLAG_IPV4 || FILTER_FLAG_IPV6)) {
|
|
/* Both formats are cool */
|
|
} else if ((flags & FILTER_FLAG_IPV4) && mode == FORMAT_IPV6) {
|
|
RETURN_VALIDATION_FAILED
|
|
} else if ((flags & FILTER_FLAG_IPV6) && mode == FORMAT_IPV4) {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
|
|
switch (mode) {
|
|
case FORMAT_IPV4:
|
|
if (!_php_filter_validate_ipv4(Z_STRVAL_P(value), Z_STRLEN_P(value), ip)) {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
|
|
/* Check flags */
|
|
if (flags & FILTER_FLAG_NO_PRIV_RANGE) {
|
|
if (
|
|
(ip[0] == 10) ||
|
|
(ip[0] == 172 && (ip[1] >= 16 && ip[1] <= 31)) ||
|
|
(ip[0] == 192 && ip[1] == 168)
|
|
) {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
}
|
|
|
|
if (flags & FILTER_FLAG_NO_RES_RANGE) {
|
|
if (
|
|
(ip[0] == 0) ||
|
|
(ip[0] == 169 && ip[1] == 254) ||
|
|
(ip[0] == 192 && ip[1] == 0 && ip[2] == 2) ||
|
|
(ip[0] >= 224 && ip[0] <= 255)
|
|
) {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FORMAT_IPV6:
|
|
{
|
|
int res = 0;
|
|
res = _php_filter_validate_ipv6(Z_STRVAL_P(value), Z_STRLEN_P(value) TSRMLS_CC);
|
|
if (res < 1) {
|
|
RETURN_VALIDATION_FAILED
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
* vim600: noet sw=4 ts=4 fdm=marker
|
|
* vim<600: noet sw=4 ts=4
|
|
*/
|