release/src/router/php/ext/standard/php_var.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PHP Version 5                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2013 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    | Author: Jani Lehtimäki <jkl@njet.net>                                |
  16    +----------------------------------------------------------------------+
  17 */
  18
  19 /* $Id$ */
  20
  21 #ifndef PHP_VAR_H
  22 #define PHP_VAR_H
  23
  24 #include "ext/standard/basic_functions.h"
  25 #include "ext/standard/php_smart_str_public.h"
  26
  27 PHP_FUNCTION(var_dump);
  28 PHP_FUNCTION(var_export);
  29 PHP_FUNCTION(debug_zval_dump);
  30 PHP_FUNCTION(serialize);
  31 PHP_FUNCTION(unserialize);
  32 PHP_FUNCTION(memory_get_usage);
  33 PHP_FUNCTION(memory_get_peak_usage);
  34
  35 PHPAPI void php_var_dump(zval **struc, int level TSRMLS_DC);
  36 PHPAPI void php_var_export(zval **struc, int level TSRMLS_DC);
  37 PHPAPI void php_var_export_ex(zval **struc, int level, smart_str *buf TSRMLS_DC);
  38
  39 PHPAPI void php_debug_zval_dump(zval **struc, int level TSRMLS_DC);
  40
  41 typedef HashTable* php_serialize_data_t;
  42
  43 struct php_unserialize_data {
  44         void *first;
  45         void *last;
  46         void *first_dtor;
  47         void *last_dtor;
  48 };
  49
  50 typedef struct php_unserialize_data* php_unserialize_data_t;
  51
  52 PHPAPI void php_var_serialize(smart_str *buf, zval **struc, php_serialize_data_t *var_hash TSRMLS_DC);
  53 PHPAPI int php_var_unserialize(zval **rval, const unsigned char **p, const unsigned char *max, php_unserialize_data_t *var_hash TSRMLS_DC);
  54
  55 #define PHP_VAR_SERIALIZE_INIT(var_hash_ptr) \
  56 do  { \
  57         /* fprintf(stderr, "SERIALIZE_INIT      == lock: %u, level: %u\n", BG(serialize_lock), BG(serialize).level); */ \
  58         if (BG(serialize_lock) || !BG(serialize).level) { \
  59                 ALLOC_HASHTABLE(var_hash_ptr); \
  60                 zend_hash_init((var_hash_ptr), 10, NULL, NULL, 0); \
  61                 if (!BG(serialize_lock)) { \
  62                         BG(serialize).var_hash = (void *)(var_hash_ptr); \
  63                         BG(serialize).level = 1; \
  64                 } \
  65         } else { \
  66                 (var_hash_ptr) = (php_serialize_data_t)BG(serialize).var_hash; \
  67                 ++BG(serialize).level; \
  68         } \
  69 } while(0)
  70
  71 #define PHP_VAR_SERIALIZE_DESTROY(var_hash_ptr) \
  72 do { \
  73         /* fprintf(stderr, "SERIALIZE_DESTROY   == lock: %u, level: %u\n", BG(serialize_lock), BG(serialize).level); */ \
  74         if (BG(serialize_lock) || !BG(serialize).level) { \
  75                 zend_hash_destroy((var_hash_ptr)); \
  76                 FREE_HASHTABLE(var_hash_ptr); \
  77         } else { \
  78                 if (!--BG(serialize).level) { \
  79                         zend_hash_destroy((php_serialize_data_t)BG(serialize).var_hash); \
  80                         FREE_HASHTABLE((php_serialize_data_t)BG(serialize).var_hash); \
  81                         BG(serialize).var_hash = NULL; \
  82                 } \
  83         } \
  84 } while (0)
  85
  86 #define PHP_VAR_UNSERIALIZE_INIT(var_hash_ptr) \
  87 do { \
  88         /* fprintf(stderr, "UNSERIALIZE_INIT    == lock: %u, level: %u\n", BG(serialize_lock), BG(unserialize).level); */ \
  89         if (BG(serialize_lock) || !BG(unserialize).level) { \
  90                 (var_hash_ptr) = (php_unserialize_data_t)ecalloc(1, sizeof(struct php_unserialize_data)); \
  91                 if (!BG(serialize_lock)) { \
  92                         BG(unserialize).var_hash = (void *)(var_hash_ptr); \
  93                         BG(unserialize).level = 1; \
  94                 } \
  95         } else { \
  96                 (var_hash_ptr) = (php_unserialize_data_t)BG(unserialize).var_hash; \
  97                 ++BG(unserialize).level; \
  98         } \
  99 } while (0)
 100
 101 #define PHP_VAR_UNSERIALIZE_DESTROY(var_hash_ptr) \
 102 do { \
 103         /* fprintf(stderr, "UNSERIALIZE_DESTROY == lock: %u, level: %u\n", BG(serialize_lock), BG(unserialize).level); */ \
 104         if (BG(serialize_lock) || !BG(unserialize).level) { \
 105                 var_destroy(&(var_hash_ptr)); \
 106                 efree(var_hash_ptr); \
 107         } else { \
 108                 if (!--BG(unserialize).level) { \
 109                         var_destroy(&(var_hash_ptr)); \
 110                         efree((var_hash_ptr)); \
 111                         BG(unserialize).var_hash = NULL; \
 112                 } \
 113         } \
 114 } while (0)
 115
 116 PHPAPI void var_replace(php_unserialize_data_t *var_hash, zval *ozval, zval **nzval);
 117 PHPAPI void var_push_dtor(php_unserialize_data_t *var_hash, zval **val);
 118 PHPAPI void var_destroy(php_unserialize_data_t *var_hash);
 119
 120 #define PHP_VAR_UNSERIALIZE_ZVAL_CHANGED(var_hash, ozval, nzval) \
 121         var_replace((var_hash), (ozval), &(nzval))
 122
 123 PHPAPI zend_class_entry *php_create_empty_class(char *class_name, int len);
 124
 125 static inline int php_varname_check(char *name, int name_len, zend_bool silent TSRMLS_DC) /* {{{ */
 126 {
 127     if (name_len == sizeof("GLOBALS") - 1 && !memcmp(name, "GLOBALS", sizeof("GLOBALS") - 1)) {
 128                 if (!silent) {
 129                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Attempted GLOBALS variable overwrite");
 130                 }
 131         return FAILURE;
 132     } else if (name[0] == '_' &&
 133             (
 134              (name_len == sizeof("_GET") - 1 && !memcmp(name, "_GET", sizeof("_GET") - 1)) ||
 135              (name_len == sizeof("_POST") - 1 && !memcmp(name, "_POST", sizeof("_POST") - 1)) ||
 136              (name_len == sizeof("_COOKIE") - 1 && !memcmp(name, "_COOKIE", sizeof("_COOKIE") - 1)) ||
 137              (name_len == sizeof("_ENV") - 1 && !memcmp(name, "_ENV", sizeof("_ENV") - 1)) ||
 138              (name_len == sizeof("_SERVER") - 1 && !memcmp(name, "_SERVER", sizeof("_SERVER") - 1)) ||
 139              (name_len == sizeof("_SESSION") - 1 && !memcmp(name, "_SESSION", sizeof("_SESSION") - 1)) ||
 140              (name_len == sizeof("_FILES") - 1  && !memcmp(name, "_FILES", sizeof("_FILES") - 1)) ||
 141              (name_len == sizeof("_REQUEST") -1 && !memcmp(name, "_REQUEST", sizeof("_REQUEST") - 1))
 142             )
 143             ) {
 144                 if (!silent) {
 145                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Attempted super-global (%s) variable overwrite", name);
 146                 }
 147         return FAILURE;
 148     } else if (name[0] == 'H' &&
 149             (
 150              (name_len == sizeof("HTTP_POST_VARS") - 1 && !memcmp(name, "HTTP_POST_VARS", sizeof("HTTP_POST_VARS") - 1)) ||
 151              (name_len == sizeof("HTTP_GET_VARS") - 1 && !memcmp(name, "HTTP_GET_VARS", sizeof("HTTP_GET_VARS") - 1)) ||
 152              (name_len == sizeof("HTTP_COOKIE_VARS") - 1 && !memcmp(name, "HTTP_COOKIE_VARS", sizeof("HTTP_COOKIE_VARS") - 1)) ||
 153              (name_len == sizeof("HTTP_ENV_VARS") - 1 && !memcmp(name, "HTTP_ENV_VARS", sizeof("HTTP_ENV_VARS") - 1)) ||
 154              (name_len == sizeof("HTTP_SERVER_VARS") - 1 && !memcmp(name, "HTTP_SERVER_VARS", sizeof("HTTP_SERVER_VARS") - 1)) ||
 155              (name_len == sizeof("HTTP_SESSION_VARS") - 1 && !memcmp(name, "HTTP_SESSION_VARS", sizeof("HTTP_SESSION_VARS") - 1)) ||
 156              (name_len == sizeof("HTTP_RAW_POST_DATA") - 1 && !memcmp(name, "HTTP_RAW_POST_DATA", sizeof("HTTP_RAW_POST_DATA") - 1)) ||
 157              (name_len == sizeof("HTTP_POST_FILES") - 1 && !memcmp(name, "HTTP_POST_FILES", sizeof("HTTP_POST_FILES") - 1))
 158             )
 159             ) {
 160                 if (!silent) {
 161                         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Attempted long input array (%s) overwrite", name);
 162                 }
 163         return FAILURE;
 164     }
 165         return SUCCESS;
 166 }
 167 /* }}} */
 168
 169 #endif /* PHP_VAR_H */