1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2006 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Brian Schaffner <brian@tool.net> |
| Shane Caraveo <shane@caraveo.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "dl.h"
#include "php_globals.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "SAPI.h"
#if defined(HAVE_LIBDL) || HAVE_MACH_O_DYLD_H
#include <stdlib.h>
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#ifdef PHP_WIN32
#include "win32/param.h"
#include "win32/winutil.h"
#define GET_DL_ERROR() php_win_err()
#elif defined(NETWARE)
#include <sys/param.h>
#define GET_DL_ERROR() dlerror()
#else
#include <sys/param.h>
#define GET_DL_ERROR() DL_ERROR()
#endif
#endif /* defined(HAVE_LIBDL) || HAVE_MACH_O_DYLD_H */
/* {{{ proto int dl(string extension_filename)
Load a PHP extension at runtime */
PHP_FUNCTION(dl)
{
zval **file;
/* obtain arguments */
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &file) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(file);
if (!PG(enable_dl)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Dynamically loaded extensions aren't enabled");
RETURN_FALSE;
} else if (PG(safe_mode)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Dynamically loaded extensions aren't allowed when running in Safe Mode");
RETURN_FALSE;
}
if ((strncmp(sapi_module.name, "cgi", 3)!=0) &&
(strcmp(sapi_module.name, "cli")!=0) &&
(strncmp(sapi_module.name, "embed", 5)!=0)) {
#ifdef ZTS
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Not supported in multithreaded Web servers - use extension=%s in your php.ini", Z_STRVAL_PP(file));
RETURN_FALSE;
#else
php_error_docref(NULL TSRMLS_CC, E_STRICT, "dl() is deprecated - use extension=%s in your php.ini", Z_STRVAL_PP(file));
#endif
}
php_dl(*file, MODULE_TEMPORARY, return_value, 0 TSRMLS_CC);
EG(full_tables_cleanup) = 1;
}
/* }}} */
#if defined(HAVE_LIBDL) || HAVE_MACH_O_DYLD_H
#ifdef ZTS
#define USING_ZTS 1
#else
#define USING_ZTS 0
#endif
/* {{{ php_dl
*/
void php_dl(zval *file, int type, zval *return_value, int start_now TSRMLS_DC)
{
void *handle;
char *libpath;
zend_module_entry *module_entry;
zend_module_entry *(*get_module)(void);
int error_type;
char *extension_dir;
if (type == MODULE_PERSISTENT) {
extension_dir = INI_STR("extension_dir");
} else {
extension_dir = PG(extension_dir);
}
if (type == MODULE_TEMPORARY) {
error_type = E_WARNING;
} else {
error_type = E_CORE_WARNING;
}
if (extension_dir && extension_dir[0]){
int extension_dir_len = strlen(extension_dir);
libpath = emalloc(extension_dir_len+Z_STRLEN_P(file)+2);
if (IS_SLASH(extension_dir[extension_dir_len-1])) {
sprintf(libpath, "%s%s", extension_dir, Z_STRVAL_P(file)); /* SAFE */
} else {
sprintf(libpath, "%s%c%s", extension_dir, DEFAULT_SLASH, Z_STRVAL_P(file)); /* SAFE */
}
} else {
libpath = estrndup(Z_STRVAL_P(file), Z_STRLEN_P(file));
}
/* load dynamic symbol */
handle = DL_LOAD(libpath);
if (!handle) {
php_error_docref(NULL TSRMLS_CC, error_type, "Unable to load dynamic library '%s' - %s", libpath, GET_DL_ERROR());
GET_DL_ERROR(); /* free the buffer storing the error */
efree(libpath);
RETURN_FALSE;
}
efree(libpath);
get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "get_module");
/*
* some OS prepend _ to symbol names while their dynamic linker
* does not do that automatically. Thus we check manually for
* _get_module.
*/
if (!get_module)
get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "_get_module");
if (!get_module) {
DL_UNLOAD(handle);
php_error_docref(NULL TSRMLS_CC, error_type, "Invalid library (maybe not a PHP library) '%s' ", Z_STRVAL_P(file));
RETURN_FALSE;
}
module_entry = get_module();
if ((module_entry->zend_debug != ZEND_DEBUG) || (module_entry->zts != USING_ZTS)
|| (module_entry->zend_api != ZEND_MODULE_API_NO)) {
/* Check for pre-4.1.0 module which has a slightly different module_entry structure :( */
struct pre_4_1_0_module_entry {
char *name;
zend_function_entry *functions;
int (*module_startup_func)(INIT_FUNC_ARGS);
int (*module_shutdown_func)(SHUTDOWN_FUNC_ARGS);
int (*request_startup_func)(INIT_FUNC_ARGS);
int (*request_shutdown_func)(SHUTDOWN_FUNC_ARGS);
void (*info_func)(ZEND_MODULE_INFO_FUNC_ARGS);
int (*global_startup_func)(void);
int (*global_shutdown_func)(void);
int globals_id;
int module_started;
unsigned char type;
void *handle;
int module_number;
unsigned char zend_debug;
unsigned char zts;
unsigned int zend_api;
};
char *name;
int zend_api;
unsigned char zend_debug, zts;
if(( ((struct pre_4_1_0_module_entry *)module_entry)->zend_api > 20000000)
&&(((struct pre_4_1_0_module_entry *)module_entry)->zend_api < 20010901)) {
name = ((struct pre_4_1_0_module_entry *)module_entry)->name;
zend_api = ((struct pre_4_1_0_module_entry *)module_entry)->zend_api;
zend_debug = ((struct pre_4_1_0_module_entry *)module_entry)->zend_debug;
zts = ((struct pre_4_1_0_module_entry *)module_entry)->zts;
} else {
name = module_entry->name;
zend_api = module_entry->zend_api;
zend_debug = module_entry->zend_debug;
zts = module_entry->zts;
}
php_error_docref(NULL TSRMLS_CC, error_type,
"%s: Unable to initialize module\n"
"Module compiled with module API=%d, debug=%d, thread-safety=%d\n"
"PHP compiled with module API=%d, debug=%d, thread-safety=%d\n"
"These options need to match\n",
name, zend_api, zend_debug, zts,
ZEND_MODULE_API_NO, ZEND_DEBUG, USING_ZTS);
DL_UNLOAD(handle);
RETURN_FALSE;
}
module_entry->type = type;
module_entry->module_number = zend_next_free_module();
module_entry->handle = handle;
if ((module_entry = zend_register_module_ex(module_entry TSRMLS_CC)) == NULL) {
DL_UNLOAD(handle);
RETURN_FALSE;
}
if ((type == MODULE_TEMPORARY || start_now) && zend_startup_module_ex(module_entry TSRMLS_CC) == FAILURE) {
DL_UNLOAD(handle);
RETURN_FALSE;
}
if ((type == MODULE_TEMPORARY || start_now) && module_entry->request_startup_func) {
if (module_entry->request_startup_func(type, module_entry->module_number TSRMLS_CC) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, error_type, "Unable to initialize module '%s'", module_entry->name);
DL_UNLOAD(handle);
RETURN_FALSE;
}
}
RETURN_TRUE;
}
/* }}} */
PHP_MINFO_FUNCTION(dl)
{
php_info_print_table_row(2, "Dynamic Library Support", "enabled");
}
#else
void php_dl(zval *file, int type, zval *return_value, int start_now TSRMLS_DC)
{
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot dynamically load %s - dynamic modules are not supported", Z_STRVAL_P(file));
RETURN_FALSE;
}
PHP_MINFO_FUNCTION(dl)
{
PUTS("Dynamic Library support not available<br />.\n");
}
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
|
