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|
/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2000 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) the GNU General Public License as published by the Free Software |
| Foundation; either version 2 of the License, or (at your option) |
| any later version. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Authors: Brian Schaffner <brian@tool.net> |
| Shane Caraveo <shane@caraveo.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id: dl.c,v 1.105 2000/03/30 01:22:37 sas Exp $ */
#include "php.h"
#include "internal_functions.h"
#include "dl.h"
#if HAVE_LIBDL
#include <stdlib.h>
#include <stdio.h>
#ifndef RTLD_LAZY
# define RTLD_LAZY 1 /* Solaris 1, FreeBSD's (2.1.7.1 and older) */
#endif
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#if MSVC5
#include "win32/param.h"
#include "win32/winutil.h"
#else
#include <sys/param.h>
#endif
function_entry dl_functions[] = {
{"dl", dl, NULL},
{NULL, NULL, NULL}
};
php3_module_entry dl_module_entry = {
"PHP_DL", dl_functions, NULL, NULL, NULL, NULL, php3_info_dl, STANDARD_MODULE_PROPERTIES
};
#endif
/* {{{ proto int dl(string extension_filename)
Load a PHP extension at runtime */
void dl(INTERNAL_FUNCTION_PARAMETERS)
{
pval *file;
/* obtain arguments */
if (ARG_COUNT(ht) != 1 || getParameters(ht, 1, &file) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(file);
if (!php3_ini.enable_dl) {
php3_error(E_ERROR, "Dynamically loaded extentions aren't enabled.");
} else if (php3_ini.safe_mode) {
php3_error(E_ERROR, "Dynamically loaded extensions aren't allowed when running in SAFE MODE.");
} else {
php3_dl(file,MODULE_TEMPORARY,return_value);
}
}
/* }}} */
#if HAVE_LIBDL
void php3_dl(pval *file,int type,pval *return_value)
{
void *handle;
char libpath[MAXPATHLEN + 1];
php3_module_entry *module_entry,*tmp;
php3_module_entry *(*get_module)(void);
TLS_VARS;
if (cfg_get_string("extension_dir",&php3_ini.extension_dir)==SUCCESS && php3_ini.extension_dir){
int extension_dir_len = strlen(php3_ini.extension_dir);
if (php3_ini.extension_dir[extension_dir_len-1]=='/' || php3_ini.extension_dir[extension_dir_len-1]=='\\') {
sprintf(libpath,"%s%s",php3_ini.extension_dir,file->value.str.val); /* SAFE */
} else {
sprintf(libpath,"%s/%s",php3_ini.extension_dir,file->value.str.val); /* SAFE */
}
} else {
sprintf(libpath,"%s",file->value.str.val); /* SAFE */
}
/* load dynamic symbol */
handle = dlopen(libpath, RTLD_NOW);
if (!handle) {
#if MSVC5
php3_error(E_ERROR,"Unable to load dynamic library '%s'<br>\n%s",libpath,php3_win_err());
#else
php3_error(E_ERROR,"Unable to load dynamic library '%s' - %s",libpath,dlerror());
#endif
RETURN_FALSE;
}
get_module = (php3_module_entry *(*)(void)) dlsym(handle, "get_module");
if (!get_module)
get_module = (php3_module_entry *(*)(void)) dlsym(handle, "_get_module");
if (!get_module) {
dlclose(handle);
php3_error(E_CORE_WARNING,"Invalid library (maybe not a PHP3 library) '%s' ",file->value.str.val);
RETURN_FALSE;
}
module_entry = get_module();
module_entry->type = type;
module_entry->module_number = _php3_next_free_module();
if (module_entry->module_startup_func) {
if (module_entry->module_startup_func(type, module_entry->module_number)==FAILURE) {
php3_error(E_CORE_WARNING,"%s: Unable to initialize module",module_entry->name);
dlclose(handle);
RETURN_FALSE;
}
}
register_module(module_entry);
if (module_entry->request_startup_func) {
if (module_entry->request_startup_func(type, module_entry->module_number)) {
php3_error(E_CORE_WARNING,"%s: Unable to initialize module",module_entry->name);
dlclose(handle);
RETURN_FALSE;
}
}
/* update the .request_started property... */
if (_php3_hash_find(&GLOBAL(module_registry),module_entry->name,strlen(module_entry->name)+1,(void **) &tmp)==FAILURE) {
php3_error(E_ERROR,"%s: Loaded module got lost",module_entry->name);
RETURN_FALSE;
}
tmp->request_started=1;
tmp->handle = handle;
RETURN_TRUE;
}
void php3_info_dl(void){
TLS_VARS;
PUTS("Dynamic Library support enabled.\n");
}
#else
void php3_dl(pval *file,int type,pval *return_value)
{
php3_error(E_WARNING,"Cannot dynamically load %s - dynamic modules are not supported",file->value.str.val);
RETURN_FALSE;
}
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
|
