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_ini.h"
27 #include "php_mysqli_structs.h"
28 #include "mysqli_priv.h"
29 #include "zend_interfaces.h"
30
31
32 extern const zend_object_iterator_funcs php_mysqli_result_iterator_funcs;
33
34 typedef struct {
35 zend_object_iterator intern;
36 mysqli_object *result;
37 zval current_row;
38 my_longlong row_num;
39 } php_mysqli_result_iterator;
40
41
42 /* {{{ */
php_mysqli_result_get_iterator(zend_class_entry * ce,zval * object,int by_ref)43 zend_object_iterator *php_mysqli_result_get_iterator(zend_class_entry *ce, zval *object, int by_ref)
44 {
45 php_mysqli_result_iterator *iterator;
46
47 if (by_ref) {
48 zend_throw_error(NULL, "An iterator cannot be used with foreach by reference");
49 return NULL;
50 }
51
52 iterator = ecalloc(1, sizeof(php_mysqli_result_iterator));
53 zend_iterator_init(&iterator->intern);
54
55 Z_ADDREF_P(object);
56 ZVAL_OBJ(&iterator->intern.data, Z_OBJ_P(object));
57 iterator->intern.funcs = &php_mysqli_result_iterator_funcs;
58 iterator->result = Z_MYSQLI_P(object);
59 iterator->row_num = -1;
60
61 return &iterator->intern;
62 }
63 /* }}} */
64
65 /* {{{ */
php_mysqli_result_iterator_dtor(zend_object_iterator * iter)66 static void php_mysqli_result_iterator_dtor(zend_object_iterator *iter)
67 {
68 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*)iter;
69
70 /* cleanup handled in sxe_object_dtor as we don't always have an iterator wrapper */
71 zval_ptr_dtor(&iterator->intern.data);
72 zval_ptr_dtor(&iterator->current_row);
73 }
74 /* }}} */
75
76 /* {{{ */
php_mysqli_result_iterator_valid(zend_object_iterator * iter)77 static int php_mysqli_result_iterator_valid(zend_object_iterator *iter)
78 {
79 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
80
81 return Z_TYPE(iterator->current_row) == IS_ARRAY ? SUCCESS : FAILURE;
82 }
83 /* }}} */
84
85 /* {{{ */
php_mysqli_result_iterator_current_data(zend_object_iterator * iter)86 static zval *php_mysqli_result_iterator_current_data(zend_object_iterator *iter)
87 {
88 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
89
90 return &iterator->current_row;
91 }
92 /* }}} */
93
94 /* {{{ */
php_mysqli_result_iterator_move_forward(zend_object_iterator * iter)95 static void php_mysqli_result_iterator_move_forward(zend_object_iterator *iter)
96 {
97
98 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
99 mysqli_object *intern = iterator->result;
100 MYSQL_RES *result;
101
102 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
103
104 zval_ptr_dtor(&iterator->current_row);
105 php_mysqli_fetch_into_hash_aux(&iterator->current_row, result, MYSQLI_ASSOC);
106 if (Z_TYPE(iterator->current_row) == IS_ARRAY) {
107 iterator->row_num++;
108 }
109 }
110 /* }}} */
111
112 /* {{{ */
php_mysqli_result_iterator_rewind(zend_object_iterator * iter)113 static void php_mysqli_result_iterator_rewind(zend_object_iterator *iter)
114 {
115 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
116 mysqli_object *intern = iterator->result;
117 MYSQL_RES *result;
118
119 MYSQLI_FETCH_RESOURCE_BY_OBJ(result, MYSQL_RES *, intern, "mysqli_result", MYSQLI_STATUS_VALID);
120
121 if (mysqli_result_is_unbuffered(result)) {
122 #ifdef MYSQLI_USE_MYSQLND
123 if (result->unbuf->eof_reached) {
124 #else
125 if (result->eof) {
126 #endif
127 php_error_docref(NULL, E_WARNING, "Data fetched with MYSQLI_USE_RESULT can be iterated only once");
128 return;
129 }
130 } else {
131 mysql_data_seek(result, 0);
132 }
133 iterator->row_num = -1;
134 php_mysqli_result_iterator_move_forward(iter);
135 }
136 /* }}} */
137
138 /* {{{ php_mysqli_result_iterator_current_key */
139 static void php_mysqli_result_iterator_current_key(zend_object_iterator *iter, zval *key)
140 {
141 php_mysqli_result_iterator *iterator = (php_mysqli_result_iterator*) iter;
142
143 ZVAL_LONG(key, iterator->row_num);
144 }
145 /* }}} */
146
147 /* {{{ php_mysqli_result_iterator_funcs */
148 const zend_object_iterator_funcs php_mysqli_result_iterator_funcs = {
149 php_mysqli_result_iterator_dtor,
150 php_mysqli_result_iterator_valid,
151 php_mysqli_result_iterator_current_data,
152 php_mysqli_result_iterator_current_key,
153 php_mysqli_result_iterator_move_forward,
154 php_mysqli_result_iterator_rewind,
155 NULL,
156 NULL, /* get_gc */
157 };
158 /* }}} */
159
