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 PHP: Test and Code Coverage Analysis
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LCOV - code coverage report
Current view: top level - ext/filter - filter.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 332 365 91.0 %
Date: 2015-05-21 Functions: 22 22 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :   +----------------------------------------------------------------------+
       3             :   | PHP Version 7                                                        |
       4             :   +----------------------------------------------------------------------+
       5             :   | Copyright (c) 1997-2015 The PHP Group                                |
       6             :   +----------------------------------------------------------------------+
       7             :   | This source file is subject to version 3.01 of the PHP license,      |
       8             :   | that is bundled with this package in the file LICENSE, and is        |
       9             :   | available through the world-wide-web at the following url:           |
      10             :   | http://www.php.net/license/3_01.txt                                  |
      11             :   | If you did not receive a copy of the PHP license and are unable to   |
      12             :   | obtain it through the world-wide-web, please send a note to          |
      13             :   | license@php.net so we can mail you a copy immediately.               |
      14             :   +----------------------------------------------------------------------+
      15             :   | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
      16             :   |          Derick Rethans <derick@php.net>                             |
      17             :   |          Pierre-A. Joye <pierre@php.net>                             |
      18             :   |          Ilia Alshanetsky <iliaa@php.net>                            |
      19             :   +----------------------------------------------------------------------+
      20             : */
      21             : 
      22             : /* $Id: a2e22e7ed779dba3c557eeac8087b0a6d18527dc $ */
      23             : 
      24             : #ifdef HAVE_CONFIG_H
      25             : #include "config.h"
      26             : #endif
      27             : 
      28             : #include "php_filter.h"
      29             : 
      30             : ZEND_DECLARE_MODULE_GLOBALS(filter)
      31             : 
      32             : #include "filter_private.h"
      33             : 
      34             : typedef struct filter_list_entry {
      35             :         const char *name;
      36             :         int    id;
      37             :         void (*function)(PHP_INPUT_FILTER_PARAM_DECL);
      38             : } filter_list_entry;
      39             : 
      40             : /* {{{ filter_list */
      41             : static const filter_list_entry filter_list[] = {
      42             :         { "int",             FILTER_VALIDATE_INT,           php_filter_int             },
      43             :         { "boolean",         FILTER_VALIDATE_BOOLEAN,       php_filter_boolean         },
      44             :         { "float",           FILTER_VALIDATE_FLOAT,         php_filter_float           },
      45             : 
      46             :         { "validate_regexp", FILTER_VALIDATE_REGEXP,        php_filter_validate_regexp },
      47             :         { "validate_domain", FILTER_VALIDATE_DOMAIN,        php_filter_validate_domain },
      48             :         { "validate_url",    FILTER_VALIDATE_URL,           php_filter_validate_url    },
      49             :         { "validate_email",  FILTER_VALIDATE_EMAIL,         php_filter_validate_email  },
      50             :         { "validate_ip",     FILTER_VALIDATE_IP,            php_filter_validate_ip     },
      51             :         { "validate_mac",    FILTER_VALIDATE_MAC,           php_filter_validate_mac    },
      52             : 
      53             :         { "string",          FILTER_SANITIZE_STRING,        php_filter_string          },
      54             :         { "stripped",        FILTER_SANITIZE_STRING,        php_filter_string          },
      55             :         { "encoded",         FILTER_SANITIZE_ENCODED,       php_filter_encoded         },
      56             :         { "special_chars",   FILTER_SANITIZE_SPECIAL_CHARS, php_filter_special_chars   },
      57             :         { "full_special_chars",   FILTER_SANITIZE_FULL_SPECIAL_CHARS, php_filter_full_special_chars   },
      58             :         { "unsafe_raw",      FILTER_UNSAFE_RAW,             php_filter_unsafe_raw      },
      59             :         { "email",           FILTER_SANITIZE_EMAIL,         php_filter_email           },
      60             :         { "url",             FILTER_SANITIZE_URL,           php_filter_url             },
      61             :         { "number_int",      FILTER_SANITIZE_NUMBER_INT,    php_filter_number_int      },
      62             :         { "number_float",    FILTER_SANITIZE_NUMBER_FLOAT,  php_filter_number_float    },
      63             :         { "magic_quotes",    FILTER_SANITIZE_MAGIC_QUOTES,  php_filter_magic_quotes    },
      64             : 
      65             :         { "callback",        FILTER_CALLBACK,               php_filter_callback        },
      66             : };
      67             : /* }}} */
      68             : 
      69             : #ifndef PARSE_ENV
      70             : #define PARSE_ENV 4
      71             : #endif
      72             : 
      73             : #ifndef PARSE_SERVER
      74             : #define PARSE_SERVER 5
      75             : #endif
      76             : 
      77             : #ifndef PARSE_SESSION
      78             : #define PARSE_SESSION 6
      79             : #endif
      80             : 
      81             : static unsigned int php_sapi_filter(int arg, char *var, char **val, size_t val_len, size_t *new_val_len);
      82             : static unsigned int php_sapi_filter_init(void);
      83             : 
      84             : /* {{{ arginfo */
      85             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_input, 0, 0, 2)
      86             :         ZEND_ARG_INFO(0, type)
      87             :         ZEND_ARG_INFO(0, variable_name)
      88             :         ZEND_ARG_INFO(0, filter)
      89             :         ZEND_ARG_INFO(0, options)
      90             : ZEND_END_ARG_INFO()
      91             : 
      92             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_var, 0, 0, 1)
      93             :         ZEND_ARG_INFO(0, variable)
      94             :         ZEND_ARG_INFO(0, filter)
      95             :         ZEND_ARG_INFO(0, options)
      96             : ZEND_END_ARG_INFO()
      97             : 
      98             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_input_array, 0, 0, 1)
      99             :         ZEND_ARG_INFO(0, type)
     100             :         ZEND_ARG_INFO(0, definition)
     101             :         ZEND_ARG_INFO(0, add_empty)
     102             : ZEND_END_ARG_INFO()
     103             : 
     104             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_var_array, 0, 0, 1)
     105             :         ZEND_ARG_INFO(0, data)
     106             :         ZEND_ARG_INFO(0, definition)
     107             :         ZEND_ARG_INFO(0, add_empty)
     108             : ZEND_END_ARG_INFO()
     109             : 
     110             : ZEND_BEGIN_ARG_INFO(arginfo_filter_list, 0)
     111             : ZEND_END_ARG_INFO()
     112             : 
     113             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_has_var, 0, 0, 2)
     114             :         ZEND_ARG_INFO(0, type)
     115             :         ZEND_ARG_INFO(0, variable_name)
     116             : ZEND_END_ARG_INFO()
     117             : 
     118             : ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_id, 0, 0, 1)
     119             :         ZEND_ARG_INFO(0, filtername)
     120             : ZEND_END_ARG_INFO()
     121             : /* }}} */
     122             : 
     123             : /* {{{ filter_functions[]
     124             :  */
     125             : static const zend_function_entry filter_functions[] = {
     126             :         PHP_FE(filter_input,            arginfo_filter_input)
     127             :         PHP_FE(filter_var,              arginfo_filter_var)
     128             :         PHP_FE(filter_input_array,      arginfo_filter_input_array)
     129             :         PHP_FE(filter_var_array,        arginfo_filter_var_array)
     130             :         PHP_FE(filter_list,             arginfo_filter_list)
     131             :         PHP_FE(filter_has_var,          arginfo_filter_has_var)
     132             :         PHP_FE(filter_id,               arginfo_filter_id)
     133             :         PHP_FE_END
     134             : };
     135             : /* }}} */
     136             : 
     137             : /* {{{ filter_module_entry
     138             :  */
     139             : zend_module_entry filter_module_entry = {
     140             :         STANDARD_MODULE_HEADER,
     141             :         "filter",
     142             :         filter_functions,
     143             :         PHP_MINIT(filter),
     144             :         PHP_MSHUTDOWN(filter),
     145             :         NULL,
     146             :         PHP_RSHUTDOWN(filter),
     147             :         PHP_MINFO(filter),
     148             :         PHP_FILTER_VERSION,
     149             :         STANDARD_MODULE_PROPERTIES
     150             : };
     151             : /* }}} */
     152             : 
     153             : #ifdef COMPILE_DL_FILTER
     154             : #ifdef ZTS
     155             : ZEND_TSRMLS_CACHE_DEFINE();
     156             : #endif
     157             : ZEND_GET_MODULE(filter)
     158             : #endif
     159             : 
     160       20916 : static PHP_INI_MH(UpdateDefaultFilter) /* {{{ */
     161             : {
     162       20916 :         int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
     163             : 
     164      313720 :         for (i = 0; i < size; ++i) {
     165      313720 :                 if ((strcasecmp(new_value->val, filter_list[i].name) == 0)) {
     166       20916 :                         IF_G(default_filter) = filter_list[i].id;
     167       20916 :                         return SUCCESS;
     168             :                 }
     169             :         }
     170             :         /* Fallback to the default filter */
     171           0 :         IF_G(default_filter) = FILTER_DEFAULT;
     172           0 :         return SUCCESS;
     173             : }
     174             : /* }}} */
     175             : 
     176             : /* {{{ PHP_INI
     177             :  */
     178       20916 : static PHP_INI_MH(OnUpdateFlags)
     179             : {
     180       20916 :         if (!new_value) {
     181       20910 :                 IF_G(default_filter_flags) = FILTER_FLAG_NO_ENCODE_QUOTES;
     182             :         } else {
     183           6 :                 IF_G(default_filter_flags) = atoi(new_value->val);
     184             :         }
     185       20916 :         return SUCCESS;
     186             : }
     187             : 
     188             : PHP_INI_BEGIN()
     189             :         STD_PHP_INI_ENTRY("filter.default",   "unsafe_raw", PHP_INI_SYSTEM|PHP_INI_PERDIR, UpdateDefaultFilter, default_filter, zend_filter_globals, filter_globals)
     190             :         PHP_INI_ENTRY("filter.default_flags", NULL,     PHP_INI_SYSTEM|PHP_INI_PERDIR, OnUpdateFlags)
     191             : PHP_INI_END()
     192             : /* }}} */
     193             : 
     194       20916 : static void php_filter_init_globals(zend_filter_globals *filter_globals) /* {{{ */
     195             : {
     196             : #if defined(COMPILE_DL_FILTER) && defined(ZTS)
     197             : ZEND_TSRMLS_CACHE_UPDATE();
     198             : #endif
     199       20916 :         ZVAL_UNDEF(&filter_globals->post_array);
     200       20916 :         ZVAL_UNDEF(&filter_globals->get_array);
     201       20916 :         ZVAL_UNDEF(&filter_globals->cookie_array);
     202       20916 :         ZVAL_UNDEF(&filter_globals->env_array);
     203       20916 :         ZVAL_UNDEF(&filter_globals->server_array);
     204       20916 :         ZVAL_UNDEF(&filter_globals->session_array);
     205       20916 :         filter_globals->default_filter = FILTER_DEFAULT;
     206       20916 : }
     207             : /* }}} */
     208             : 
     209             : #define PARSE_REQUEST 99
     210             : 
     211             : /* {{{ PHP_MINIT_FUNCTION
     212             :  */
     213       20916 : PHP_MINIT_FUNCTION(filter)
     214             : {
     215       20916 :         ZEND_INIT_MODULE_GLOBALS(filter, php_filter_init_globals, NULL);
     216             : 
     217       20916 :         REGISTER_INI_ENTRIES();
     218             : 
     219       20916 :         REGISTER_LONG_CONSTANT("INPUT_POST",  PARSE_POST,     CONST_CS | CONST_PERSISTENT);
     220       20916 :         REGISTER_LONG_CONSTANT("INPUT_GET",           PARSE_GET,              CONST_CS | CONST_PERSISTENT);
     221       20916 :         REGISTER_LONG_CONSTANT("INPUT_COOKIE",        PARSE_COOKIE,   CONST_CS | CONST_PERSISTENT);
     222       20916 :         REGISTER_LONG_CONSTANT("INPUT_ENV",           PARSE_ENV,              CONST_CS | CONST_PERSISTENT);
     223       20916 :         REGISTER_LONG_CONSTANT("INPUT_SERVER",        PARSE_SERVER,   CONST_CS | CONST_PERSISTENT);
     224       20916 :         REGISTER_LONG_CONSTANT("INPUT_SESSION", PARSE_SESSION,        CONST_CS | CONST_PERSISTENT);
     225       20916 :         REGISTER_LONG_CONSTANT("INPUT_REQUEST", PARSE_REQUEST,        CONST_CS | CONST_PERSISTENT);
     226             : 
     227       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_NONE", FILTER_FLAG_NONE, CONST_CS | CONST_PERSISTENT);
     228             : 
     229       20916 :         REGISTER_LONG_CONSTANT("FILTER_REQUIRE_SCALAR", FILTER_REQUIRE_SCALAR, CONST_CS | CONST_PERSISTENT);
     230       20916 :         REGISTER_LONG_CONSTANT("FILTER_REQUIRE_ARRAY", FILTER_REQUIRE_ARRAY, CONST_CS | CONST_PERSISTENT);
     231       20916 :         REGISTER_LONG_CONSTANT("FILTER_FORCE_ARRAY", FILTER_FORCE_ARRAY, CONST_CS | CONST_PERSISTENT);
     232       20916 :         REGISTER_LONG_CONSTANT("FILTER_NULL_ON_FAILURE", FILTER_NULL_ON_FAILURE, CONST_CS | CONST_PERSISTENT);
     233             : 
     234       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_INT", FILTER_VALIDATE_INT, CONST_CS | CONST_PERSISTENT);
     235       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_BOOLEAN", FILTER_VALIDATE_BOOLEAN, CONST_CS | CONST_PERSISTENT);
     236       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_FLOAT", FILTER_VALIDATE_FLOAT, CONST_CS | CONST_PERSISTENT);
     237             : 
     238       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_REGEXP", FILTER_VALIDATE_REGEXP, CONST_CS | CONST_PERSISTENT);
     239       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_DOMAIN", FILTER_VALIDATE_DOMAIN, CONST_CS | CONST_PERSISTENT);
     240       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_URL", FILTER_VALIDATE_URL, CONST_CS | CONST_PERSISTENT);
     241       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_EMAIL", FILTER_VALIDATE_EMAIL, CONST_CS | CONST_PERSISTENT);
     242       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_IP", FILTER_VALIDATE_IP, CONST_CS | CONST_PERSISTENT);
     243       20916 :         REGISTER_LONG_CONSTANT("FILTER_VALIDATE_MAC", FILTER_VALIDATE_MAC, CONST_CS | CONST_PERSISTENT);
     244             : 
     245       20916 :         REGISTER_LONG_CONSTANT("FILTER_DEFAULT", FILTER_DEFAULT, CONST_CS | CONST_PERSISTENT);
     246       20916 :         REGISTER_LONG_CONSTANT("FILTER_UNSAFE_RAW", FILTER_UNSAFE_RAW, CONST_CS | CONST_PERSISTENT);
     247             : 
     248       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_STRING", FILTER_SANITIZE_STRING, CONST_CS | CONST_PERSISTENT);
     249       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_STRIPPED", FILTER_SANITIZE_STRING, CONST_CS | CONST_PERSISTENT);
     250       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_ENCODED", FILTER_SANITIZE_ENCODED, CONST_CS | CONST_PERSISTENT);
     251       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_SPECIAL_CHARS", FILTER_SANITIZE_SPECIAL_CHARS, CONST_CS | CONST_PERSISTENT);
     252       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_FULL_SPECIAL_CHARS", FILTER_SANITIZE_FULL_SPECIAL_CHARS, CONST_CS | CONST_PERSISTENT);
     253       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_EMAIL", FILTER_SANITIZE_EMAIL, CONST_CS | CONST_PERSISTENT);
     254       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_URL", FILTER_SANITIZE_URL, CONST_CS | CONST_PERSISTENT);
     255       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_NUMBER_INT", FILTER_SANITIZE_NUMBER_INT, CONST_CS | CONST_PERSISTENT);
     256       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_NUMBER_FLOAT", FILTER_SANITIZE_NUMBER_FLOAT, CONST_CS | CONST_PERSISTENT);
     257       20916 :         REGISTER_LONG_CONSTANT("FILTER_SANITIZE_MAGIC_QUOTES", FILTER_SANITIZE_MAGIC_QUOTES, CONST_CS | CONST_PERSISTENT);
     258             : 
     259       20916 :         REGISTER_LONG_CONSTANT("FILTER_CALLBACK", FILTER_CALLBACK, CONST_CS | CONST_PERSISTENT);
     260             : 
     261       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_OCTAL", FILTER_FLAG_ALLOW_OCTAL, CONST_CS | CONST_PERSISTENT);
     262       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_HEX", FILTER_FLAG_ALLOW_HEX, CONST_CS | CONST_PERSISTENT);
     263             : 
     264       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_LOW", FILTER_FLAG_STRIP_LOW, CONST_CS | CONST_PERSISTENT);
     265       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_HIGH", FILTER_FLAG_STRIP_HIGH, CONST_CS | CONST_PERSISTENT);
     266       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_BACKTICK", FILTER_FLAG_STRIP_BACKTICK, CONST_CS | CONST_PERSISTENT);
     267       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_LOW", FILTER_FLAG_ENCODE_LOW, CONST_CS | CONST_PERSISTENT);
     268       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_HIGH", FILTER_FLAG_ENCODE_HIGH, CONST_CS | CONST_PERSISTENT);
     269       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_AMP", FILTER_FLAG_ENCODE_AMP, CONST_CS | CONST_PERSISTENT);
     270       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_ENCODE_QUOTES", FILTER_FLAG_NO_ENCODE_QUOTES, CONST_CS | CONST_PERSISTENT);
     271       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_EMPTY_STRING_NULL", FILTER_FLAG_EMPTY_STRING_NULL, CONST_CS | CONST_PERSISTENT);
     272             : 
     273       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_FRACTION", FILTER_FLAG_ALLOW_FRACTION, CONST_CS | CONST_PERSISTENT);
     274       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_THOUSAND", FILTER_FLAG_ALLOW_THOUSAND, CONST_CS | CONST_PERSISTENT);
     275       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_SCIENTIFIC", FILTER_FLAG_ALLOW_SCIENTIFIC, CONST_CS | CONST_PERSISTENT);
     276             : 
     277       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_SCHEME_REQUIRED", FILTER_FLAG_SCHEME_REQUIRED, CONST_CS | CONST_PERSISTENT);
     278       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_HOST_REQUIRED", FILTER_FLAG_HOST_REQUIRED, CONST_CS | CONST_PERSISTENT);
     279       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_PATH_REQUIRED", FILTER_FLAG_PATH_REQUIRED, CONST_CS | CONST_PERSISTENT);
     280       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_QUERY_REQUIRED", FILTER_FLAG_QUERY_REQUIRED, CONST_CS | CONST_PERSISTENT);
     281             : 
     282       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_IPV4", FILTER_FLAG_IPV4, CONST_CS | CONST_PERSISTENT);
     283       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_IPV6", FILTER_FLAG_IPV6, CONST_CS | CONST_PERSISTENT);
     284       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_RES_RANGE", FILTER_FLAG_NO_RES_RANGE, CONST_CS | CONST_PERSISTENT);
     285       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_PRIV_RANGE", FILTER_FLAG_NO_PRIV_RANGE, CONST_CS | CONST_PERSISTENT);
     286             : 
     287       20916 :         REGISTER_LONG_CONSTANT("FILTER_FLAG_HOSTNAME", FILTER_FLAG_HOSTNAME, CONST_CS | CONST_PERSISTENT);
     288             : 
     289       20916 :         sapi_register_input_filter(php_sapi_filter, php_sapi_filter_init);
     290             : 
     291       20916 :         return SUCCESS;
     292             : }
     293             : /* }}} */
     294             : 
     295             : /* {{{ PHP_MSHUTDOWN_FUNCTION
     296             :  */
     297       20952 : PHP_MSHUTDOWN_FUNCTION(filter)
     298             : {
     299       20952 :         UNREGISTER_INI_ENTRIES();
     300             : 
     301       20952 :         return SUCCESS;
     302             : }
     303             : /* }}} */
     304             : 
     305             : /* {{{ PHP_RSHUTDOWN_FUNCTION
     306             :  */
     307             : #define VAR_ARRAY_COPY_DTOR(a)   \
     308             :         if (!Z_ISUNDEF(IF_G(a))) {   \
     309             :                 zval_ptr_dtor(&IF_G(a)); \
     310             :                 ZVAL_UNDEF(&IF_G(a));    \
     311             :         }
     312             : 
     313       20911 : PHP_RSHUTDOWN_FUNCTION(filter)
     314             : {
     315       20911 :         VAR_ARRAY_COPY_DTOR(get_array)
     316       20911 :         VAR_ARRAY_COPY_DTOR(post_array)
     317       20911 :         VAR_ARRAY_COPY_DTOR(cookie_array)
     318       20911 :         VAR_ARRAY_COPY_DTOR(server_array)
     319       20911 :         VAR_ARRAY_COPY_DTOR(env_array)
     320       20911 :         VAR_ARRAY_COPY_DTOR(session_array)
     321       20911 :         return SUCCESS;
     322             : }
     323             : /* }}} */
     324             : 
     325             : /* {{{ PHP_MINFO_FUNCTION
     326             :  */
     327         142 : PHP_MINFO_FUNCTION(filter)
     328             : {
     329         142 :         php_info_print_table_start();
     330         142 :         php_info_print_table_row( 2, "Input Validation and Filtering", "enabled" );
     331         142 :         php_info_print_table_row( 2, "Revision", "$Id: a2e22e7ed779dba3c557eeac8087b0a6d18527dc $");
     332         142 :         php_info_print_table_end();
     333             : 
     334         142 :         DISPLAY_INI_ENTRIES();
     335         142 : }
     336             : /* }}} */
     337             : 
     338        1042 : static filter_list_entry php_find_filter(zend_long id) /* {{{ */
     339             : {
     340        1042 :         int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
     341             : 
     342        9099 :         for (i = 0; i < size; ++i) {
     343        9094 :                 if (filter_list[i].id == id) {
     344        1037 :                         return filter_list[i];
     345             :                 }
     346             :         }
     347             :         /* Fallback to "string" filter */
     348          75 :         for (i = 0; i < size; ++i) {
     349          75 :                 if (filter_list[i].id == FILTER_DEFAULT) {
     350           5 :                         return filter_list[i];
     351             :                 }
     352             :         }
     353             :         /* To shut up GCC */
     354           0 :         return filter_list[0];
     355             : }
     356             : /* }}} */
     357             : 
     358       20873 : static unsigned int php_sapi_filter_init(void)
     359             : {
     360       20873 :         ZVAL_UNDEF(&IF_G(get_array));
     361       20873 :         ZVAL_UNDEF(&IF_G(post_array));
     362       20873 :         ZVAL_UNDEF(&IF_G(cookie_array));
     363       20873 :         ZVAL_UNDEF(&IF_G(server_array));
     364       20873 :         ZVAL_UNDEF(&IF_G(env_array));
     365       20873 :         ZVAL_UNDEF(&IF_G(session_array));
     366       20873 :         return SUCCESS;
     367             : }
     368             : 
     369        1042 : static void php_zval_filter(zval *value, zend_long filter, zend_long flags, zval *options, char* charset, zend_bool copy) /* {{{ */
     370             : {
     371             :         filter_list_entry  filter_func;
     372             : 
     373        1042 :         filter_func = php_find_filter(filter);
     374             : 
     375        1042 :         if (!filter_func.id) {
     376             :                 /* Find default filter */
     377           0 :                 filter_func = php_find_filter(FILTER_DEFAULT);
     378             :         }
     379             : 
     380        1042 :         if (copy) {
     381        1704 :                 SEPARATE_ZVAL(value);
     382             :         }
     383             : 
     384             :         /* #49274, fatal error with object without a toString method
     385             :           Fails nicely instead of getting a recovarable fatal error. */
     386        1042 :         if (Z_TYPE_P(value) == IS_OBJECT) {
     387             :                 zend_class_entry *ce;
     388             : 
     389           2 :                 ce = Z_OBJCE_P(value);
     390           2 :                 if (!ce->__tostring) {
     391           1 :                         zval_ptr_dtor(value);
     392           1 :                         ZVAL_FALSE(value);
     393           1 :                         return;
     394             :                 }
     395             :         }
     396             : 
     397             :         /* Here be strings */
     398        1041 :         convert_to_string(value);
     399             : 
     400        1041 :         filter_func.function(value, flags, options, charset);
     401             : 
     402        1302 :         if (options && (Z_TYPE_P(options) == IS_ARRAY || Z_TYPE_P(options) == IS_OBJECT) &&
     403          41 :                 ((flags & FILTER_NULL_ON_FAILURE && Z_TYPE_P(value) == IS_NULL) ||
     404          41 :                 (!(flags & FILTER_NULL_ON_FAILURE) && Z_TYPE_P(value) == IS_FALSE)) &&
     405          26 :                 zend_hash_str_exists(HASH_OF(options), "default", sizeof("default") - 1)) {
     406             :                 zval *tmp;
     407           1 :                 if ((tmp = zend_hash_str_find(HASH_OF(options), "default", sizeof("default") - 1)) != NULL) {
     408           1 :                         ZVAL_COPY(value, tmp);
     409             :                 }
     410             :         }
     411             : }
     412             : /* }}} */
     413             : 
     414      102941 : static unsigned int php_sapi_filter(int arg, char *var, char **val, size_t val_len, size_t *new_val_len) /* {{{ */
     415             : {
     416             :         zval  new_var, raw_var;
     417      102941 :         zval *array_ptr = NULL, *orig_array_ptr = NULL;
     418      102941 :         int retval = 0;
     419             : 
     420             :         assert(*val != NULL);
     421             : 
     422             : #define PARSE_CASE(s,a,t)                               \
     423             :                 case s:                                         \
     424             :                         if (Z_ISUNDEF(IF_G(a))) {                       \
     425             :                                 array_init(&IF_G(a));                               \
     426             :                         }                                                                               \
     427             :                         array_ptr = &IF_G(a);                               \
     428             :                         orig_array_ptr = &PG(http_globals)[t];      \
     429             :                         break;
     430             : 
     431      102941 :         switch (arg) {
     432         117 :                 PARSE_CASE(PARSE_POST,    post_array,    TRACK_VARS_POST)
     433         235 :                 PARSE_CASE(PARSE_GET,     get_array,     TRACK_VARS_GET)
     434          39 :                 PARSE_CASE(PARSE_COOKIE,  cookie_array,  TRACK_VARS_COOKIE)
     435      102431 :                 PARSE_CASE(PARSE_SERVER,  server_array,  TRACK_VARS_SERVER)
     436           0 :                 PARSE_CASE(PARSE_ENV,     env_array,     TRACK_VARS_ENV)
     437             : 
     438             :                 case PARSE_STRING: /* PARSE_STRING is used by parse_str() function */
     439         119 :                         retval = 1;
     440             :                         break;
     441             :         }
     442             : 
     443             :         /*
     444             :          * According to rfc2965, more specific paths are listed above the less specific ones.
     445             :          * If we encounter a duplicate cookie name, we should skip it, since it is not possible
     446             :          * to have the same (plain text) cookie name for the same path and we should not overwrite
     447             :          * more specific cookies with the less specific ones.
     448             :         */
     449      102980 :         if (arg == PARSE_COOKIE && orig_array_ptr &&
     450          39 :                         zend_symtable_str_exists(Z_ARRVAL_P(orig_array_ptr), var, strlen(var))) {
     451           3 :                 return 0;
     452             :         }
     453             : 
     454      102938 :         if (array_ptr) {
     455             :                 /* Store the RAW variable internally */
     456      205638 :                 ZVAL_STRINGL(&raw_var, *val, val_len);
     457      102819 :                 php_register_variable_ex(var, &raw_var, array_ptr);
     458             :         }
     459             : 
     460      102938 :         if (val_len) {
     461             :                 /* Register mangled variable */
     462       82162 :                 if (IF_G(default_filter) != FILTER_UNSAFE_RAW) {
     463          18 :                         ZVAL_STRINGL(&new_var, *val, val_len);
     464           9 :                         php_zval_filter(&new_var, IF_G(default_filter), IF_G(default_filter_flags), NULL, NULL, 0);
     465             :                 } else {
     466      164306 :                         ZVAL_STRINGL(&new_var, *val, val_len);
     467             :                 }
     468             :         } else { /* empty string */
     469       20776 :                 ZVAL_EMPTY_STRING(&new_var);
     470             :         }
     471             : 
     472      102938 :         if (orig_array_ptr) {
     473      102819 :                 php_register_variable_ex(var, &new_var, orig_array_ptr);
     474             :         }
     475             : 
     476      102938 :         if (retval) {
     477         119 :                 if (new_val_len) {
     478         111 :                         *new_val_len = Z_STRLEN(new_var);
     479             :                 }
     480         119 :                 efree(*val);
     481         119 :                 if (Z_STRLEN(new_var)) {
     482         112 :                         *val = estrndup(Z_STRVAL(new_var), Z_STRLEN(new_var));
     483             :                 } else {
     484           7 :                         *val = estrdup("");
     485             :                 }
     486         119 :                 zval_ptr_dtor(&new_var);
     487             :         }
     488             : 
     489      102938 :         return retval;
     490             : }
     491             : /* }}} */
     492             : 
     493          21 : static void php_zval_filter_recursive(zval *value, zend_long filter, zend_long flags, zval *options, char *charset, zend_bool copy) /* {{{ */
     494             : {
     495          21 :         if (Z_TYPE_P(value) == IS_ARRAY) {
     496             :                 zval *element;
     497             : 
     498          21 :                 if (Z_ARRVAL_P(value)->u.v.nApplyCount > 1) {
     499           0 :                         return;
     500             :                 }
     501             : 
     502         111 :                 ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(value), element) {
     503          45 :                         ZVAL_DEREF(element);
     504         114 :                         SEPARATE_ZVAL_NOREF(element);
     505          45 :                         if (Z_TYPE_P(element) == IS_ARRAY) {
     506           6 :                                 Z_ARRVAL_P(element)->u.v.nApplyCount++;
     507           6 :                                 php_zval_filter_recursive(element, filter, flags, options, charset, copy);
     508           6 :                                 Z_ARRVAL_P(element)->u.v.nApplyCount--;
     509             :                         } else {
     510          39 :                                 php_zval_filter(element, filter, flags, options, charset, copy);
     511             :                         }
     512             :                 } ZEND_HASH_FOREACH_END();
     513             :         } else {
     514           0 :                 php_zval_filter(value, filter, flags, options, charset, copy);
     515             :         }
     516             : }
     517             : /* }}} */
     518             : 
     519          48 : static zval *php_filter_get_storage(zend_long arg)/* {{{ */
     520             : 
     521             : {
     522          48 :         zval *array_ptr = NULL;
     523             : 
     524          48 :         switch (arg) {
     525             :                 case PARSE_GET:
     526          23 :                         array_ptr = &IF_G(get_array);
     527          23 :                         break;
     528             :                 case PARSE_POST:
     529          14 :                         array_ptr = &IF_G(post_array);
     530          14 :                         break;
     531             :                 case PARSE_COOKIE:
     532           7 :                         array_ptr = &IF_G(cookie_array);
     533           7 :                         break;
     534             :                 case PARSE_SERVER:
     535           2 :                         if (PG(auto_globals_jit)) {
     536           2 :                                 zend_is_auto_global_str(ZEND_STRL("_SERVER"));
     537             :                         }
     538           2 :                         array_ptr = &IF_G(server_array);
     539           2 :                         break;
     540             :                 case PARSE_ENV:
     541           0 :                         if (PG(auto_globals_jit)) {
     542           0 :                                 zend_is_auto_global_str(ZEND_STRL("_ENV"));
     543             :                         }
     544           0 :                         array_ptr = &IF_G(env_array) ? &IF_G(env_array) : &PG(http_globals)[TRACK_VARS_ENV];
     545           0 :                         break;
     546             :                 case PARSE_SESSION:
     547             :                         /* FIXME: Implement session source */
     548           0 :                         php_error_docref(NULL, E_WARNING, "INPUT_SESSION is not yet implemented");
     549           0 :                         break;
     550             :                 case PARSE_REQUEST:
     551             :                         /* FIXME: Implement request source */
     552           0 :                         php_error_docref(NULL, E_WARNING, "INPUT_REQUEST is not yet implemented");
     553             :                         break;
     554             :         }
     555             : 
     556          48 :         return array_ptr;
     557             : }
     558             : /* }}} */
     559             : 
     560             : /* {{{ proto mixed filter_has_var(constant type, string variable_name)
     561             :  * Returns true if the variable with the name 'name' exists in source.
     562             :  */
     563          31 : PHP_FUNCTION(filter_has_var)
     564             : {
     565             :         zend_long         arg;
     566             :         zend_string *var;
     567          31 :         zval        *array_ptr = NULL;
     568             : 
     569          31 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "lS", &arg, &var) == FAILURE) {
     570           9 :                 RETURN_FALSE;
     571             :         }
     572             : 
     573          22 :         array_ptr = php_filter_get_storage(arg);
     574             : 
     575          62 :         if (array_ptr && HASH_OF(array_ptr) && zend_hash_exists(HASH_OF(array_ptr), var)) {
     576           9 :                 RETURN_TRUE;
     577             :         }
     578             : 
     579          13 :         RETURN_FALSE;
     580             : }
     581             : /* }}} */
     582             : 
     583        1015 : static void php_filter_call(zval *filtered, zend_long filter, zval *filter_args, const int copy, zend_long filter_flags) /* {{{ */
     584             : {
     585        1015 :         zval *options = NULL;
     586             :         zval *option;
     587        1015 :         char *charset = NULL;
     588             : 
     589        1974 :         if (filter_args && Z_TYPE_P(filter_args) != IS_ARRAY) {
     590         191 :                 zend_long lval = zval_get_long(filter_args);
     591             : 
     592         191 :                 if (filter != -1) { /* handler for array apply */
     593             :                         /* filter_args is the filter_flags */
     594         180 :                         filter_flags = lval;
     595             : 
     596         180 :                         if (!(filter_flags & FILTER_REQUIRE_ARRAY ||  filter_flags & FILTER_FORCE_ARRAY)) {
     597         175 :                                 filter_flags |= FILTER_REQUIRE_SCALAR;
     598             :                         }
     599             :                 } else {
     600          11 :                         filter = lval;
     601             :                 }
     602         824 :         } else if (filter_args) {
     603         577 :                 if ((option = zend_hash_str_find(HASH_OF(filter_args), "filter", sizeof("filter") - 1)) != NULL) {
     604           9 :                         filter = zval_get_long(option);
     605             :                 }
     606             : 
     607         577 :                 if ((option = zend_hash_str_find(HASH_OF(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
     608         311 :                         filter_flags = zval_get_long(option);
     609             : 
     610         311 :                         if (!(filter_flags & FILTER_REQUIRE_ARRAY ||  filter_flags & FILTER_FORCE_ARRAY)) {
     611         300 :                                 filter_flags |= FILTER_REQUIRE_SCALAR;
     612             :                         }
     613             :                 }
     614             : 
     615         577 :                 if ((option = zend_hash_str_find(HASH_OF(filter_args), "options", sizeof("options") - 1)) != NULL) {
     616         264 :                         if (filter != FILTER_CALLBACK) {
     617         227 :                                 if (Z_TYPE_P(option) == IS_ARRAY) {
     618          37 :                                         options = option;
     619             :                                 }
     620             :                         } else {
     621          37 :                                 options = option;
     622          37 :                                 filter_flags = 0;
     623             :                         }
     624             :                 }
     625             :         }
     626             : 
     627        1015 :         if (Z_TYPE_P(filtered) == IS_ARRAY) {
     628          20 :                 if (filter_flags & FILTER_REQUIRE_SCALAR) {
     629           5 :                         if (copy) {
     630           6 :                                 SEPARATE_ZVAL(filtered);
     631             :                         }
     632           5 :                         zval_ptr_dtor(filtered);
     633           5 :                         if (filter_flags & FILTER_NULL_ON_FAILURE) {
     634           0 :                                 ZVAL_NULL(filtered);
     635             :                         } else {
     636           5 :                                 ZVAL_FALSE(filtered);
     637             :                         }
     638           5 :                         return;
     639             :                 }
     640          15 :                 php_zval_filter_recursive(filtered, filter, filter_flags, options, charset, copy);
     641          15 :                 return;
     642             :         }
     643         995 :         if (filter_flags & FILTER_REQUIRE_ARRAY) {
     644           1 :                 if (copy) {
     645           1 :                         SEPARATE_ZVAL(filtered);
     646             :                 }
     647           1 :                 zval_ptr_dtor(filtered);
     648           1 :                 if (filter_flags & FILTER_NULL_ON_FAILURE) {
     649           0 :                         ZVAL_NULL(filtered);
     650             :                 } else {
     651           1 :                         ZVAL_FALSE(filtered);
     652             :                 }
     653           1 :                 return;
     654             :         }
     655             : 
     656         994 :         php_zval_filter(filtered, filter, filter_flags, options, charset, copy);
     657         994 :         if (filter_flags & FILTER_FORCE_ARRAY) {
     658             :                 zval tmp;
     659           5 :                 ZVAL_COPY_VALUE(&tmp, filtered);
     660           5 :                 array_init(filtered);
     661           5 :                 add_next_index_zval(filtered, &tmp);
     662             :         }
     663             : }
     664             : /* }}} */
     665             : 
     666          18 : static void php_filter_array_handler(zval *input, zval *op, zval *return_value, zend_bool add_empty) /* {{{ */
     667             : {
     668             :         zend_string *arg_key;
     669             :         zval *tmp, *arg_elm;
     670             : 
     671          18 :         if (!op) {
     672           2 :                 zval_ptr_dtor(return_value);
     673           2 :                 ZVAL_DUP(return_value, input);
     674           2 :                 php_filter_call(return_value, FILTER_DEFAULT, NULL, 0, FILTER_REQUIRE_ARRAY);
     675          16 :         } else if (Z_TYPE_P(op) == IS_LONG) {
     676           1 :                 zval_ptr_dtor(return_value);
     677           1 :                 ZVAL_DUP(return_value, input);
     678           1 :                 php_filter_call(return_value, Z_LVAL_P(op), NULL, 0, FILTER_REQUIRE_ARRAY);
     679          15 :         } else if (Z_TYPE_P(op) == IS_ARRAY) {
     680          15 :                 array_init(return_value);
     681             : 
     682          81 :                 ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(op), arg_key, arg_elm) {
     683          34 :                         if (arg_key == NULL) {
     684           0 :                                 php_error_docref(NULL, E_WARNING, "Numeric keys are not allowed in the definition array");
     685           0 :                                 zval_ptr_dtor(return_value);
     686           0 :                                 RETURN_FALSE;
     687             :                         }
     688          34 :                         if (arg_key->len == 0) {
     689           2 :                                 php_error_docref(NULL, E_WARNING, "Empty keys are not allowed in the definition array");
     690           2 :                                 zval_ptr_dtor(return_value);
     691           2 :                                 RETURN_FALSE;
     692             :                         }
     693          32 :                         if ((tmp = zend_hash_find(Z_ARRVAL_P(input), arg_key)) == NULL) {
     694          10 :                                 if (add_empty) {
     695           9 :                                         add_assoc_null_ex(return_value, arg_key->val, arg_key->len);
     696             :                                 }
     697             :                         } else {
     698             :                                 zval nval;
     699          22 :                                 ZVAL_DEREF(tmp);
     700          22 :                                 ZVAL_DUP(&nval, tmp);
     701          22 :                                 php_filter_call(&nval, -1, arg_elm, 0, FILTER_REQUIRE_SCALAR);
     702          22 :                                 zend_hash_update(Z_ARRVAL_P(return_value), arg_key, &nval);
     703             :                         }
     704             :                 } ZEND_HASH_FOREACH_END();
     705             :         } else {
     706           0 :                 RETURN_FALSE;
     707             :         }
     708             : }
     709             : /* }}} */
     710             : 
     711             : /* {{{ proto mixed filter_input(constant type, string variable_name [, long filter [, mixed options]])
     712             :  * Returns the filtered variable 'name'* from source `type`.
     713             :  */
     714          26 : PHP_FUNCTION(filter_input)
     715             : {
     716          26 :         zend_long fetch_from, filter = FILTER_DEFAULT;
     717          26 :         zval *filter_args = NULL, *tmp;
     718          26 :         zval *input = NULL;
     719             :         zend_string *var;
     720             : 
     721          26 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "lS|lz", &fetch_from, &var, &filter, &filter_args) == FAILURE) {
     722           1 :                 return;
     723             :         }
     724             : 
     725          25 :         if (!PHP_FILTER_ID_EXISTS(filter)) {
     726           0 :                 RETURN_FALSE;
     727             :         }
     728             : 
     729          25 :         input = php_filter_get_storage(fetch_from);
     730             : 
     731          75 :         if (!input || !HASH_OF(input) || (tmp = zend_hash_find(HASH_OF(input), var)) == NULL) {
     732           5 :                 zend_long filter_flags = 0;
     733             :                 zval *option, *opt, *def;
     734           5 :                 if (filter_args) {
     735           2 :                         if (Z_TYPE_P(filter_args) == IS_LONG) {
     736           0 :                                 filter_flags = Z_LVAL_P(filter_args);
     737           3 :                         } else if (Z_TYPE_P(filter_args) == IS_ARRAY && (option = zend_hash_str_find(HASH_OF(filter_args), "flags", sizeof("flags") - 1)) != NULL) {
     738           1 :                                 filter_flags = zval_get_long(option);
     739             :                         }
     740           5 :                         if (Z_TYPE_P(filter_args) == IS_ARRAY &&
     741           2 :                                 (opt = zend_hash_str_find(HASH_OF(filter_args), "options", sizeof("options") - 1)) != NULL &&
     742             :                                 Z_TYPE_P(opt) == IS_ARRAY &&
     743           1 :                                 (def = zend_hash_str_find(HASH_OF(opt), "default", sizeof("default") - 1)) != NULL) {
     744           1 :                                 ZVAL_COPY(return_value, def);
     745           1 :                                 return;
     746             :                         }
     747             :                 }
     748             : 
     749             :                 /* The FILTER_NULL_ON_FAILURE flag inverts the usual return values of
     750             :                  * the function: normally when validation fails false is returned, and
     751             :                  * when the input value doesn't exist NULL is returned. With the flag
     752             :                  * set, NULL and false should be returned, respectively. Ergo, although
     753             :                  * the code below looks incorrect, it's actually right. */
     754           4 :                 if (filter_flags & FILTER_NULL_ON_FAILURE) {
     755           0 :                         RETURN_FALSE;
     756             :                 } else {
     757           4 :                         RETURN_NULL();
     758             :                 }
     759             :         }
     760             : 
     761          20 :         ZVAL_DUP(return_value, tmp);
     762             : 
     763          20 :         php_filter_call(return_value, filter, filter_args, 1, FILTER_REQUIRE_SCALAR);
     764             : }
     765             : /* }}} */
     766             : 
     767             : /* {{{ proto mixed filter_var(mixed variable [, long filter [, mixed options]])
     768             :  * Returns the filtered version of the variable.
     769             :  */
     770         976 : PHP_FUNCTION(filter_var)
     771             : {
     772         976 :         zend_long filter = FILTER_DEFAULT;
     773         976 :         zval *filter_args = NULL, *data;
     774             : 
     775         976 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "z/|lz", &data, &filter, &filter_args) == FAILURE) {
     776           4 :                 return;
     777             :         }
     778             : 
     779         972 :         if (!PHP_FILTER_ID_EXISTS(filter)) {
     780           2 :                 RETURN_FALSE;
     781             :         }
     782             : 
     783         970 :         ZVAL_DUP(return_value, data);
     784             : 
     785         970 :         php_filter_call(return_value, filter, filter_args, 1, FILTER_REQUIRE_SCALAR);
     786             : }
     787             : /* }}} */
     788             : 
     789             : /* {{{ proto mixed filter_input_array(constant type, [, mixed options [, bool add_empty]]])
     790             :  * Returns an array with all arguments defined in 'definition'.
     791             :  */
     792           7 : PHP_FUNCTION(filter_input_array)
     793             : {
     794             :         zend_long    fetch_from;
     795           7 :         zval   *array_input = NULL, *op = NULL;
     796           7 :         zend_bool add_empty = 1;
     797             : 
     798           7 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "l|zb",  &fetch_from, &op, &add_empty) == FAILURE) {
     799           0 :                 return;
     800             :         }
     801             : 
     802          20 :         if (op && (Z_TYPE_P(op) != IS_ARRAY) && !(Z_TYPE_P(op) == IS_LONG && PHP_FILTER_ID_EXISTS(Z_LVAL_P(op)))) {
     803           6 :                 RETURN_FALSE;
     804             :         }
     805             : 
     806           1 :         array_input = php_filter_get_storage(fetch_from);
     807             : 
     808           2 :         if (!array_input || !HASH_OF(array_input)) {
     809           0 :                 zend_long filter_flags = 0;
     810             :                 zval *option;
     811           0 :                 if (op) {
     812           0 :                         if (Z_TYPE_P(op) == IS_LONG) {
     813           0 :                                 filter_flags = Z_LVAL_P(op);
     814           0 :                         } else if (Z_TYPE_P(op) == IS_ARRAY && (option = zend_hash_str_find(HASH_OF(op), "flags", sizeof("flags") - 1)) != NULL) {
     815           0 :                                 filter_flags = zval_get_long(option);
     816             :                         }
     817             :                 }
     818             : 
     819             :                 /* The FILTER_NULL_ON_FAILURE flag inverts the usual return values of
     820             :                  * the function: normally when validation fails false is returned, and
     821             :                  * when the input value doesn't exist NULL is returned. With the flag
     822             :                  * set, NULL and false should be returned, respectively. Ergo, although
     823             :                  * the code below looks incorrect, it's actually right. */
     824           0 :                 if (filter_flags & FILTER_NULL_ON_FAILURE) {
     825           0 :                         RETURN_FALSE;
     826             :                 } else {
     827           0 :                         RETURN_NULL();
     828             :                 }
     829             :         }
     830             : 
     831           1 :         php_filter_array_handler(array_input, op, return_value, add_empty);
     832             : }
     833             : /* }}} */
     834             : 
     835             : /* {{{ proto mixed filter_var_array(array data, [, mixed options [, bool add_empty]]])
     836             :  * Returns an array with all arguments defined in 'definition'.
     837             :  */
     838          37 : PHP_FUNCTION(filter_var_array)
     839             : {
     840          37 :         zval *array_input = NULL, *op = NULL;
     841          37 :         zend_bool add_empty = 1;
     842             : 
     843          37 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "a|zb",  &array_input, &op, &add_empty) == FAILURE) {
     844           1 :                 return;
     845             :         }
     846             : 
     847          90 :         if (op && (Z_TYPE_P(op) != IS_ARRAY) && !(Z_TYPE_P(op) == IS_LONG && PHP_FILTER_ID_EXISTS(Z_LVAL_P(op)))) {
     848          19 :                 RETURN_FALSE;
     849             :         }
     850             : 
     851          17 :         php_filter_array_handler(array_input, op, return_value, add_empty);
     852             : }
     853             : /* }}} */
     854             : 
     855             : /* {{{ proto filter_list()
     856             :  * Returns a list of all supported filters */
     857           3 : PHP_FUNCTION(filter_list)
     858             : {
     859           3 :         int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
     860             : 
     861           3 :         if (zend_parse_parameters_none() == FAILURE) {
     862           1 :                 return;
     863             :         }
     864             : 
     865           2 :         array_init(return_value);
     866          44 :         for (i = 0; i < size; ++i) {
     867          42 :                 add_next_index_string(return_value, (char *)filter_list[i].name);
     868             :         }
     869             : }
     870             : /* }}} */
     871             : 
     872             : /* {{{ proto filter_id(string filtername)
     873             :  * Returns the filter ID belonging to a named filter */
     874         218 : PHP_FUNCTION(filter_id)
     875             : {
     876             :         int i;
     877             :         size_t filter_len;
     878         218 :         int size = sizeof(filter_list) / sizeof(filter_list_entry);
     879             :         char *filter;
     880             : 
     881         218 :         if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &filter, &filter_len) == FAILURE) {
     882           2 :                 return;
     883             :         }
     884             : 
     885        2393 :         for (i = 0; i < size; ++i) {
     886        2391 :                 if (strcmp(filter_list[i].name, filter) == 0) {
     887         214 :                         RETURN_LONG(filter_list[i].id);
     888             :                 }
     889             :         }
     890             : 
     891           2 :         RETURN_FALSE;
     892             : }
     893             : /* }}} */
     894             : 
     895             : /*
     896             :  * Local variables:
     897             :  * tab-width: 4
     898             :  * c-basic-offset: 4
     899             :  * End:
     900             :  * vim600: noet sw=4 ts=4 fdm=marker
     901             :  * vim<600: noet sw=4 ts=4
     902             :  */

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