mirror of
https://github.com/php/php-src.git
synced 2024-09-22 10:27:25 +00:00
304 lines
9.2 KiB
C
304 lines
9.2 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2014 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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| Authors: Brian Schaffner <brian@tool.net> |
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| Shane Caraveo <shane@caraveo.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "php.h"
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#include "dl.h"
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#include "php_globals.h"
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#include "php_ini.h"
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#include "ext/standard/info.h"
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#include "SAPI.h"
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#if defined(HAVE_LIBDL)
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#include <strings.h>
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#endif
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#ifdef PHP_WIN32
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#include "win32/param.h"
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#include "win32/winutil.h"
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#define GET_DL_ERROR() php_win_err()
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#elif defined(NETWARE)
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#include <sys/param.h>
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#define GET_DL_ERROR() dlerror()
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#else
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#include <sys/param.h>
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#define GET_DL_ERROR() DL_ERROR()
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#endif
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#endif /* defined(HAVE_LIBDL) */
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/* {{{ proto int dl(string extension_filename)
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Load a PHP extension at runtime */
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PHPAPI PHP_FUNCTION(dl)
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{
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char *filename;
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int filename_len;
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &filename, &filename_len) == FAILURE) {
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return;
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}
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if (!PG(enable_dl)) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Dynamically loaded extensions aren't enabled");
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RETURN_FALSE;
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}
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if (filename_len >= MAXPATHLEN) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "File name exceeds the maximum allowed length of %d characters", MAXPATHLEN);
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RETURN_FALSE;
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}
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if ((strncmp(sapi_module.name, "cgi", 3) != 0) &&
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(strcmp(sapi_module.name, "cli") != 0) &&
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(strncmp(sapi_module.name, "embed", 5) != 0)
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) {
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#ifdef ZTS
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Not supported in multithreaded Web servers - use extension=%s in your php.ini", filename);
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RETURN_FALSE;
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#else
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php_error_docref(NULL TSRMLS_CC, E_DEPRECATED, "dl() is deprecated - use extension=%s in your php.ini", filename);
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#endif
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}
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php_dl(filename, MODULE_TEMPORARY, return_value, 0 TSRMLS_CC);
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if (Z_LVAL_P(return_value) == 1) {
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EG(full_tables_cleanup) = 1;
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}
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}
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/* }}} */
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#if defined(HAVE_LIBDL)
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#ifdef ZTS
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#define USING_ZTS 1
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#else
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#define USING_ZTS 0
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#endif
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/* {{{ php_load_extension
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*/
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PHPAPI int php_load_extension(char *filename, int type, int start_now TSRMLS_DC)
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{
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void *handle;
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char *libpath;
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zend_module_entry *module_entry;
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zend_module_entry *(*get_module)(void);
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int error_type;
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char *extension_dir;
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if (type == MODULE_PERSISTENT) {
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extension_dir = INI_STR("extension_dir");
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} else {
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extension_dir = PG(extension_dir);
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}
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if (type == MODULE_TEMPORARY) {
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error_type = E_WARNING;
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} else {
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error_type = E_CORE_WARNING;
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}
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/* Check if passed filename contains directory separators */
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if (strchr(filename, '/') != NULL || strchr(filename, DEFAULT_SLASH) != NULL) {
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/* Passing modules with full path is not supported for dynamically loaded extensions */
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if (type == MODULE_TEMPORARY) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Temporary module name should contain only filename");
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return FAILURE;
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}
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libpath = estrdup(filename);
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} else if (extension_dir && extension_dir[0]) {
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int extension_dir_len = strlen(extension_dir);
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if (IS_SLASH(extension_dir[extension_dir_len-1])) {
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spprintf(&libpath, 0, "%s%s", extension_dir, filename); /* SAFE */
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} else {
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spprintf(&libpath, 0, "%s%c%s", extension_dir, DEFAULT_SLASH, filename); /* SAFE */
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}
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} else {
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return FAILURE; /* Not full path given or extension_dir is not set */
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}
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/* load dynamic symbol */
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handle = DL_LOAD(libpath);
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if (!handle) {
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#if PHP_WIN32
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char *err = GET_DL_ERROR();
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if (err && (*err != "")) {
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php_error_docref(NULL TSRMLS_CC, error_type, "Unable to load dynamic library '%s' - %s", libpath, err);
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LocalFree(err);
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} else {
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php_error_docref(NULL TSRMLS_CC, error_type, "Unable to load dynamic library '%s' - %s", libpath, "Unknown reason");
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}
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#else
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php_error_docref(NULL TSRMLS_CC, error_type, "Unable to load dynamic library '%s' - %s", libpath, GET_DL_ERROR());
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GET_DL_ERROR(); /* free the buffer storing the error */
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#endif
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efree(libpath);
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return FAILURE;
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}
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efree(libpath);
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get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "get_module");
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/* Some OS prepend _ to symbol names while their dynamic linker
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* does not do that automatically. Thus we check manually for
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* _get_module. */
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if (!get_module) {
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get_module = (zend_module_entry *(*)(void)) DL_FETCH_SYMBOL(handle, "_get_module");
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}
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if (!get_module) {
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if (DL_FETCH_SYMBOL(handle, "zend_extension_entry") || DL_FETCH_SYMBOL(handle, "_zend_extension_entry")) {
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DL_UNLOAD(handle);
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php_error_docref(NULL TSRMLS_CC, error_type, "Invalid library (appears to be a Zend Extension, try loading using zend_extension=%s from php.ini)", filename);
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return FAILURE;
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}
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DL_UNLOAD(handle);
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php_error_docref(NULL TSRMLS_CC, error_type, "Invalid library (maybe not a PHP library) '%s'", filename);
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return FAILURE;
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}
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module_entry = get_module();
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if (module_entry->zend_api != ZEND_MODULE_API_NO) {
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/* Check for pre-4.1.0 module which has a slightly different module_entry structure :( */
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struct pre_4_1_0_module_entry {
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char *name;
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zend_function_entry *functions;
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int (*module_startup_func)(INIT_FUNC_ARGS);
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int (*module_shutdown_func)(SHUTDOWN_FUNC_ARGS);
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int (*request_startup_func)(INIT_FUNC_ARGS);
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int (*request_shutdown_func)(SHUTDOWN_FUNC_ARGS);
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void (*info_func)(ZEND_MODULE_INFO_FUNC_ARGS);
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int (*global_startup_func)(void);
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int (*global_shutdown_func)(void);
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int globals_id;
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int module_started;
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unsigned char type;
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void *handle;
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int module_number;
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unsigned char zend_debug;
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unsigned char zts;
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unsigned int zend_api;
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};
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const char *name;
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int zend_api;
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if ((((struct pre_4_1_0_module_entry *)module_entry)->zend_api > 20000000) &&
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(((struct pre_4_1_0_module_entry *)module_entry)->zend_api < 20010901)
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) {
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name = ((struct pre_4_1_0_module_entry *)module_entry)->name;
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zend_api = ((struct pre_4_1_0_module_entry *)module_entry)->zend_api;
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} else {
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name = module_entry->name;
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zend_api = module_entry->zend_api;
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}
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php_error_docref(NULL TSRMLS_CC, error_type,
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"%s: Unable to initialize module\n"
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"Module compiled with module API=%d\n"
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"PHP compiled with module API=%d\n"
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"These options need to match\n",
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name, zend_api, ZEND_MODULE_API_NO);
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DL_UNLOAD(handle);
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return FAILURE;
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}
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if(strcmp(module_entry->build_id, ZEND_MODULE_BUILD_ID)) {
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php_error_docref(NULL TSRMLS_CC, error_type,
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"%s: Unable to initialize module\n"
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"Module compiled with build ID=%s\n"
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"PHP compiled with build ID=%s\n"
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"These options need to match\n",
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module_entry->name, module_entry->build_id, ZEND_MODULE_BUILD_ID);
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DL_UNLOAD(handle);
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return FAILURE;
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}
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module_entry->type = type;
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module_entry->module_number = zend_next_free_module();
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module_entry->handle = handle;
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if ((module_entry = zend_register_module_ex(module_entry TSRMLS_CC)) == NULL) {
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DL_UNLOAD(handle);
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return FAILURE;
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}
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if ((type == MODULE_TEMPORARY || start_now) && zend_startup_module_ex(module_entry TSRMLS_CC) == FAILURE) {
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DL_UNLOAD(handle);
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return FAILURE;
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}
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if ((type == MODULE_TEMPORARY || start_now) && module_entry->request_startup_func) {
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if (module_entry->request_startup_func(type, module_entry->module_number TSRMLS_CC) == FAILURE) {
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php_error_docref(NULL TSRMLS_CC, error_type, "Unable to initialize module '%s'", module_entry->name);
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DL_UNLOAD(handle);
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return FAILURE;
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}
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}
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return SUCCESS;
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}
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/* }}} */
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/* {{{ php_dl
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*/
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PHPAPI void php_dl(char *file, int type, zval *return_value, int start_now TSRMLS_DC)
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{
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/* Load extension */
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if (php_load_extension(file, type, start_now TSRMLS_CC) == FAILURE) {
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RETVAL_FALSE;
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} else {
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RETVAL_TRUE;
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}
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}
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/* }}} */
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PHP_MINFO_FUNCTION(dl)
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{
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php_info_print_table_row(2, "Dynamic Library Support", "enabled");
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}
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#else
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PHPAPI void php_dl(char *file, int type, zval *return_value, int start_now TSRMLS_DC)
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{
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot dynamically load %s - dynamic modules are not supported", file);
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RETURN_FALSE;
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}
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PHP_MINFO_FUNCTION(dl)
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{
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PUTS("Dynamic Library support not available<br />.\n");
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}
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#endif
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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: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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