mirror of
https://github.com/php/php-src.git
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557 lines
15 KiB
C
557 lines
15 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2008 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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| Author: Omar Kilani <omar@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "php.h"
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#include "php_ini.h"
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#include "ext/standard/info.h"
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#include "ext/standard/php_smart_str.h"
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#include "utf8_to_utf16.h"
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#include "JSON_parser.h"
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#include "php_json.h"
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static PHP_MINFO_FUNCTION(json);
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static PHP_FUNCTION(json_encode);
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static PHP_FUNCTION(json_decode);
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static const char digits[] = "0123456789abcdef";
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#define PHP_JSON_HEX_TAG (1<<0)
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#define PHP_JSON_HEX_AMP (1<<1)
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#define PHP_JSON_HEX_APOS (1<<2)
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#define PHP_JSON_HEX_QUOT (1<<3)
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/* {{{ json_functions[]
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*
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* Every user visible function must have an entry in json_functions[].
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*/
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static const function_entry json_functions[] = {
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PHP_FE(json_encode, NULL)
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PHP_FE(json_decode, NULL)
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{NULL, NULL, NULL} /* Must be the last line in json_functions[] */
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};
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/* }}} */
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/* {{{ MINIT */
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static PHP_MINIT_FUNCTION(json)
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{
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REGISTER_LONG_CONSTANT("JSON_HEX_TAG", PHP_JSON_HEX_TAG, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("JSON_HEX_AMP", PHP_JSON_HEX_AMP, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("JSON_HEX_APOS", PHP_JSON_HEX_APOS, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("JSON_HEX_QUOT", PHP_JSON_HEX_QUOT, CONST_CS | CONST_PERSISTENT);
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return SUCCESS;
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}
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/* }}} */
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/* {{{ json_module_entry
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*/
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zend_module_entry json_module_entry = {
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#if ZEND_MODULE_API_NO >= 20010901
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STANDARD_MODULE_HEADER,
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#endif
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"json",
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json_functions,
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PHP_MINIT(json),
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NULL,
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NULL,
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NULL,
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PHP_MINFO(json),
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#if ZEND_MODULE_API_NO >= 20010901
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PHP_JSON_VERSION,
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#endif
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STANDARD_MODULE_PROPERTIES
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};
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/* }}} */
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#ifdef COMPILE_DL_JSON
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ZEND_GET_MODULE(json)
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#endif
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/* {{{ PHP_MINFO_FUNCTION
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*/
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static PHP_MINFO_FUNCTION(json)
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{
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php_info_print_table_start();
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php_info_print_table_row(2, "json support", "enabled");
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php_info_print_table_row(2, "json version", PHP_JSON_VERSION);
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php_info_print_table_end();
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}
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/* }}} */
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static void json_encode_r(smart_str *buf, zval *val, int options TSRMLS_DC);
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static void json_escape_string(smart_str *buf, char *s, int len, int options TSRMLS_DC);
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static int json_determine_array_type(zval **val TSRMLS_DC) /* {{{ */
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{
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int i;
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HashTable *myht = HASH_OF(*val);
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i = myht ? zend_hash_num_elements(myht) : 0;
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if (i > 0) {
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char *key;
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ulong index, idx;
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uint key_len;
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HashPosition pos;
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zend_hash_internal_pointer_reset_ex(myht, &pos);
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idx = 0;
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for (;; zend_hash_move_forward_ex(myht, &pos)) {
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i = zend_hash_get_current_key_ex(myht, &key, &key_len, &index, 0, &pos);
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if (i == HASH_KEY_NON_EXISTANT)
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break;
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if (i == HASH_KEY_IS_STRING) {
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return 1;
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} else {
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if (index != idx) {
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return 1;
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}
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}
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idx++;
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}
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}
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return 0;
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}
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/* }}} */
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static void json_encode_array(smart_str *buf, zval **val, int options TSRMLS_DC) { /* {{{ */
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int i, r;
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HashTable *myht;
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if (Z_TYPE_PP(val) == IS_ARRAY) {
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myht = HASH_OF(*val);
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r = json_determine_array_type(val TSRMLS_CC);
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} else {
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myht = Z_OBJPROP_PP(val);
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r = 1;
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}
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if (myht && myht->nApplyCount > 1) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "recursion detected");
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smart_str_appendl(buf, "null", 4);
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return;
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}
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if (r == 0)
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{
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smart_str_appendc(buf, '[');
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}
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else
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{
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smart_str_appendc(buf, '{');
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}
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i = myht ? zend_hash_num_elements(myht) : 0;
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if (i > 0) {
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char *key;
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zval **data;
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ulong index;
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uint key_len;
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HashPosition pos;
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HashTable *tmp_ht;
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int need_comma = 0;
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zend_hash_internal_pointer_reset_ex(myht, &pos);
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for (;; zend_hash_move_forward_ex(myht, &pos)) {
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i = zend_hash_get_current_key_ex(myht, &key, &key_len, &index, 0, &pos);
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if (i == HASH_KEY_NON_EXISTANT)
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break;
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if (zend_hash_get_current_data_ex(myht, (void **) &data, &pos) == SUCCESS) {
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tmp_ht = HASH_OF(*data);
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if (tmp_ht) {
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tmp_ht->nApplyCount++;
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}
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if (r == 0) {
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if (need_comma) {
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smart_str_appendc(buf, ',');
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} else {
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need_comma = 1;
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}
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json_encode_r(buf, *data, options TSRMLS_CC);
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} else if (r == 1) {
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if (i == HASH_KEY_IS_STRING) {
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if (key[0] == '\0' && Z_TYPE_PP(val) == IS_OBJECT) {
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/* Skip protected and private members. */
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continue;
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}
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if (need_comma) {
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smart_str_appendc(buf, ',');
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} else {
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need_comma = 1;
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}
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json_escape_string(buf, key, key_len - 1, options TSRMLS_CC);
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smart_str_appendc(buf, ':');
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json_encode_r(buf, *data, options TSRMLS_CC);
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} else {
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if (need_comma) {
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smart_str_appendc(buf, ',');
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} else {
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need_comma = 1;
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}
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smart_str_appendc(buf, '"');
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smart_str_append_long(buf, (long) index);
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smart_str_appendc(buf, '"');
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smart_str_appendc(buf, ':');
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json_encode_r(buf, *data, options TSRMLS_CC);
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}
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}
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if (tmp_ht) {
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tmp_ht->nApplyCount--;
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}
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}
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}
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}
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if (r == 0)
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{
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smart_str_appendc(buf, ']');
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}
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else
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{
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smart_str_appendc(buf, '}');
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}
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}
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/* }}} */
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#define REVERSE16(us) (((us & 0xf) << 12) | (((us >> 4) & 0xf) << 8) | (((us >> 8) & 0xf) << 4) | ((us >> 12) & 0xf))
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static void json_escape_string(smart_str *buf, char *s, int len, int options TSRMLS_DC) /* {{{ */
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{
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int pos = 0;
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unsigned short us;
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unsigned short *utf16;
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if (len == 0)
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{
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smart_str_appendl(buf, "\"\"", 2);
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return;
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}
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utf16 = (unsigned short *) safe_emalloc(len, sizeof(unsigned short), 0);
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len = utf8_to_utf16(utf16, s, len);
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if (len <= 0)
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{
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if (utf16)
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{
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efree(utf16);
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}
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if(len < 0) {
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if(!PG(display_errors)) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid UTF-8 sequence in argument");
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}
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smart_str_appendl(buf, "null", 4);
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} else {
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smart_str_appendl(buf, "\"\"", 2);
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}
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return;
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}
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smart_str_appendc(buf, '"');
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while(pos < len)
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{
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us = utf16[pos++];
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switch (us)
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{
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case '"':
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{
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if (options & PHP_JSON_HEX_QUOT) {
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smart_str_appendl(buf, "\\u0022", 6);
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} else {
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smart_str_appendl(buf, "\\\"", 2);
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}
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}
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break;
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case '\\':
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{
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smart_str_appendl(buf, "\\\\", 2);
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}
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break;
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case '/':
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{
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smart_str_appendl(buf, "\\/", 2);
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}
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break;
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case '\b':
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{
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smart_str_appendl(buf, "\\b", 2);
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}
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break;
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case '\f':
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{
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smart_str_appendl(buf, "\\f", 2);
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}
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break;
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case '\n':
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{
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smart_str_appendl(buf, "\\n", 2);
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}
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break;
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case '\r':
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{
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smart_str_appendl(buf, "\\r", 2);
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}
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break;
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case '\t':
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{
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smart_str_appendl(buf, "\\t", 2);
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}
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break;
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case '<':
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{
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if (options & PHP_JSON_HEX_TAG) {
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smart_str_appendl(buf, "\\u003C", 6);
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} else {
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smart_str_appendc(buf, '<');
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}
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}
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break;
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case '>':
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{
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if (options & PHP_JSON_HEX_TAG) {
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smart_str_appendl(buf, "\\u003E", 6);
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} else {
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smart_str_appendc(buf, '>');
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}
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}
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break;
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case '&':
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{
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if (options & PHP_JSON_HEX_AMP) {
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smart_str_appendl(buf, "\\u0026", 6);
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} else {
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smart_str_appendc(buf, '&');
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}
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}
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break;
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case '\'':
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{
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if (options & PHP_JSON_HEX_APOS) {
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smart_str_appendl(buf, "\\u0027", 6);
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} else {
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smart_str_appendc(buf, '\'');
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}
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}
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break;
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default:
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{
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if (us >= ' ' && (us & 127) == us)
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{
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smart_str_appendc(buf, (unsigned char) us);
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}
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else
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{
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smart_str_appendl(buf, "\\u", 2);
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us = REVERSE16(us);
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smart_str_appendc(buf, digits[us & ((1 << 4) - 1)]);
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us >>= 4;
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smart_str_appendc(buf, digits[us & ((1 << 4) - 1)]);
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us >>= 4;
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smart_str_appendc(buf, digits[us & ((1 << 4) - 1)]);
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us >>= 4;
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smart_str_appendc(buf, digits[us & ((1 << 4) - 1)]);
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}
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}
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break;
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}
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}
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smart_str_appendc(buf, '"');
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efree(utf16);
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}
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/* }}} */
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static void json_encode_r(smart_str *buf, zval *val, int options TSRMLS_DC) /* {{{ */
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{
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switch (Z_TYPE_P(val)) {
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case IS_NULL:
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smart_str_appendl(buf, "null", 4);
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break;
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case IS_BOOL:
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if (Z_BVAL_P(val))
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{
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smart_str_appendl(buf, "true", 4);
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}
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else
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{
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smart_str_appendl(buf, "false", 5);
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}
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break;
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case IS_LONG:
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smart_str_append_long(buf, Z_LVAL_P(val));
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break;
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case IS_DOUBLE:
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{
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char *d = NULL;
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int len;
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double dbl = Z_DVAL_P(val);
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if (!zend_isinf(dbl) && !zend_isnan(dbl)) {
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len = spprintf(&d, 0, "%.*k", (int) EG(precision), dbl);
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smart_str_appendl(buf, d, len);
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efree(d);
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} else {
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zend_error(E_WARNING, "[json] (json_encode_r) double %.9g does not conform to the JSON spec, encoded as 0.", dbl);
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smart_str_appendc(buf, '0');
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}
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}
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break;
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case IS_STRING:
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json_escape_string(buf, Z_STRVAL_P(val), Z_STRLEN_P(val), options TSRMLS_CC);
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break;
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case IS_ARRAY:
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case IS_OBJECT:
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json_encode_array(buf, &val, options TSRMLS_CC);
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break;
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default:
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zend_error(E_WARNING, "[json] (json_encode_r) type is unsupported, encoded as null.");
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smart_str_appendl(buf, "null", 4);
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break;
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}
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return;
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}
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/* }}} */
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/* {{{ proto string json_encode(mixed data)
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Returns the JSON representation of a value */
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static PHP_FUNCTION(json_encode)
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{
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zval *parameter;
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smart_str buf = {0};
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long options = 0;
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|l", ¶meter, &options) == FAILURE) {
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return;
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}
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json_encode_r(&buf, parameter, options TSRMLS_CC);
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ZVAL_STRINGL(return_value, buf.c, buf.len, 1);
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smart_str_free(&buf);
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}
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/* }}} */
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/* {{{ proto mixed json_decode(string json [, bool assoc])
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Decodes the JSON representation into a PHP value */
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static PHP_FUNCTION(json_decode)
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{
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char *parameter;
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int parameter_len, utf16_len;
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zend_bool assoc = 0; /* return JS objects as PHP objects by default */
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zval *z;
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unsigned short *utf16;
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", ¶meter, ¶meter_len, &assoc) == FAILURE) {
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return;
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}
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|
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if (!parameter_len)
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{
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RETURN_NULL();
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}
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utf16 = (unsigned short *) safe_emalloc((parameter_len+1), sizeof(unsigned short), 1);
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utf16_len = utf8_to_utf16(utf16, parameter, parameter_len);
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if (utf16_len <= 0)
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{
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if (utf16)
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{
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efree(utf16);
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}
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RETURN_NULL();
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}
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ALLOC_INIT_ZVAL(z);
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if (JSON_parser(z, utf16, utf16_len, assoc TSRMLS_CC))
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{
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*return_value = *z;
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FREE_ZVAL(z);
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efree(utf16);
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}
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else
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{
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double d;
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int type;
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long p;
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zval_dtor(z);
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FREE_ZVAL(z);
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efree(utf16);
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|
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if (parameter_len == 4) {
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if (!strcasecmp(parameter, "null")) {
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RETURN_NULL();
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} else if (!strcasecmp(parameter, "true")) {
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RETURN_BOOL(1);
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}
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} else if (parameter_len == 5 && !strcasecmp(parameter, "false")) {
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RETURN_BOOL(0);
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}
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if ((type = is_numeric_string(parameter, parameter_len, &p, &d, 0)) != 0) {
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if (type == IS_LONG) {
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RETURN_LONG(p);
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} else if (type == IS_DOUBLE) {
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RETURN_DOUBLE(d);
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}
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}
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if (parameter_len > 1 && *parameter == '"' && parameter[parameter_len-1] == '"') {
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RETURN_STRINGL(parameter+1, parameter_len-2, 1);
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} else if (*parameter == '{' || *parameter == '[') { /* invalid JSON string */
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RETURN_NULL();
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} else {
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RETURN_STRINGL(parameter, parameter_len, 1);
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}
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}
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}
|
|
/* }}} */
|
|
|
|
/*
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|
* Local variables:
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|
* tab-width: 4
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|
* c-basic-offset: 4
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|
* End:
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|
* vim600: noet sw=4 ts=4
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|
* vim<600: noet sw=4 ts=4
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|
*/
|