1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Authors: Georg Richter <georg@php.net> |
14 | Andrey Hristov <andrey@php.net> |
15 | Ulf Wendel <uw@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include <signal.h>
24
25 #include "php.h"
26 #include "php_mysqli_structs.h"
27 #include "mysqli_priv.h"
28 #include "zend_interfaces.h"
29
30
31 extern const zend_object_iterator_funcs php_mysqli_result_iterator_funcs;
32
33 typedef struct {
34 zend_object_iterator intern;
35 mysqli_object *result;
36 zval current_row;
37 my_longlong row_num;
38 } php_mysqli_result_iterator;
39
40
41 /* {{{ */
php_mysqli_result_get_iterator(zend_class_entry * ce,zval * object,int by_ref)42 zend_object_iterator *php_mysqli_result_get_iterator(zend_class_entry *ce, zval *object, int by_ref)
43 {
44 php_mysqli_result_iterator *iterator;
45
46 if (by_ref) {
47 zend_throw_error(NULL, "An iterator cannot be used with foreach by reference");
48 return NULL;
49 }
50
51 iterator = ecalloc(1, sizeof(php_mysqli_result_iterator));
52 zend_iterator_init(&iterator->intern);
53
54 Z_ADDREF_P(object);
55 ZVAL_OBJ(&iterator->intern.data, Z_OBJ_P(object));
56 iterator->intern.funcs = &php_mysqli_result_iterator_funcs;
57 iterator->result = Z_MYSQLI_P(object);
58 iterator->row_num = -1;
59
60 return &iterator->intern;
61 }
62 /* }}} */
63
64 /* {{{ */
php_mysqli_result_iterator_dtor(zend_object_iterator * iter)65 static void php_mysqli_result_iterator_dtor(zend_object_iterator *iter)
66 {
67 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*)iter;
68
69 /* cleanup handled in sxe_object_dtor as we don't always have an iterator wrapper */
70 zval_ptr_dtor(&iterator->intern.data);
71 zval_ptr_dtor(&iterator->current_row);
72 }
73 /* }}} */
74
75 /* {{{ */
php_mysqli_result_iterator_valid(zend_object_iterator * iter)76 static zend_result php_mysqli_result_iterator_valid(zend_object_iterator *iter)
77 {
78 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
79
80 return Z_TYPE(iterator->current_row) == IS_ARRAY ? SUCCESS : FAILURE;
81 }
82 /* }}} */
83
84 /* {{{ */
php_mysqli_result_iterator_current_data(zend_object_iterator * iter)85 static zval *php_mysqli_result_iterator_current_data(zend_object_iterator *iter)
86 {
87 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
88
89 return &iterator->current_row;
90 }
91 /* }}} */
92
93 /* {{{ */
php_mysqli_result_iterator_move_forward(zend_object_iterator * iter)94 static void php_mysqli_result_iterator_move_forward(zend_object_iterator *iter)
95 {
96
97 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
98 mysqli_object *intern = iterator->result;
99 MYSQL_RES *result;
100
101 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
102
103 zval_ptr_dtor(&iterator->current_row);
104 php_mysqli_fetch_into_hash_aux(&iterator->current_row, result, MYSQLI_ASSOC);
105 if (Z_TYPE(iterator->current_row) == IS_ARRAY) {
106 iterator->row_num++;
107 }
108 }
109 /* }}} */
110
111 /* {{{ */
php_mysqli_result_iterator_rewind(zend_object_iterator * iter)112 static void php_mysqli_result_iterator_rewind(zend_object_iterator *iter)
113 {
114 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
115 mysqli_object *intern = iterator->result;
116 MYSQL_RES *result;
117
118 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
119
120 if (mysqli_result_is_unbuffered(result)) {
121 if (result->unbuf->eof_reached) {
122 zend_error(E_WARNING, "Data fetched with MYSQLI_USE_RESULT can be iterated only once");
123 return;
124 }
125 } else {
126 mysql_data_seek(result, 0);
127 }
128 iterator->row_num = -1;
129 php_mysqli_result_iterator_move_forward(iter);
130 }
131 /* }}} */
132
133 /* {{{ php_mysqli_result_iterator_current_key */
php_mysqli_result_iterator_current_key(zend_object_iterator * iter,zval * key)134 static void php_mysqli_result_iterator_current_key(zend_object_iterator *iter, zval *key)
135 {
136 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
137
138 ZVAL_LONG(key, iterator->row_num);
139 }
140 /* }}} */
141
142 /* {{{ php_mysqli_result_iterator_funcs */
143 const zend_object_iterator_funcs php_mysqli_result_iterator_funcs = {
144 php_mysqli_result_iterator_dtor,
145 php_mysqli_result_iterator_valid,
146 php_mysqli_result_iterator_current_data,
147 php_mysqli_result_iterator_current_key,
148 php_mysqli_result_iterator_move_forward,
149 php_mysqli_result_iterator_rewind,
150 NULL,
151 NULL, /* get_gc */
152 };
153 /* }}} */
154
