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|
/*
+----------------------------------------------------------------------+
| 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. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
/* $Id: link.c,v 1.52.2.1.2.1 2006/09/16 18:30:03 iliaa Exp $ */
#include "php.h"
#include "php_filestat.h"
#include "php_globals.h"
#ifdef HAVE_SYMLINK
#include <stdlib.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/stat.h>
#include <string.h>
#if HAVE_PWD_H
#ifdef PHP_WIN32
#include "win32/pwd.h"
#else
#include <pwd.h>
#endif
#endif
#if HAVE_GRP_H
#ifdef PHP_WIN32
#include "win32/grp.h"
#else
#include <grp.h>
#endif
#endif
#include <errno.h>
#include <ctype.h>
#include "safe_mode.h"
#include "php_link.h"
/* {{{ proto string readlink(string filename)
Return the target of a symbolic link */
PHP_FUNCTION(readlink)
{
zval **filename;
char buff[MAXPATHLEN];
int ret;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &filename) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(filename);
if (PG(safe_mode) && !php_checkuid(Z_STRVAL_PP(filename), NULL, CHECKUID_CHECK_FILE_AND_DIR)) {
RETURN_FALSE;
}
if (php_check_open_basedir(Z_STRVAL_PP(filename) TSRMLS_CC)) {
RETURN_FALSE;
}
ret = readlink(Z_STRVAL_PP(filename), buff, MAXPATHLEN-1);
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
/* Append NULL to the end of the string */
buff[ret] = '\0';
RETURN_STRING(buff, 1);
}
/* }}} */
/* {{{ proto int linkinfo(string filename)
Returns the st_dev field of the UNIX C stat structure describing the link */
PHP_FUNCTION(linkinfo)
{
zval **filename;
struct stat sb;
int ret;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &filename) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(filename);
ret = VCWD_LSTAT(Z_STRVAL_PP(filename), &sb);
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_LONG(-1L);
}
RETURN_LONG((long) sb.st_dev);
}
/* }}} */
/* {{{ proto int symlink(string target, string link)
Create a symbolic link */
PHP_FUNCTION(symlink)
{
zval **topath, **frompath;
int ret;
char source_p[MAXPATHLEN];
char dest_p[MAXPATHLEN];
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &topath, &frompath) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(topath);
convert_to_string_ex(frompath);
if (!expand_filepath(Z_STRVAL_PP(frompath), source_p TSRMLS_CC) || !expand_filepath(Z_STRVAL_PP(topath), dest_p TSRMLS_CC)) {
RETURN_FALSE;
}
if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
{
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to symlink to a URL");
RETURN_FALSE;
}
if (PG(safe_mode) && !php_checkuid(dest_p, NULL, CHECKUID_CHECK_FILE_AND_DIR)) {
RETURN_FALSE;
}
if (PG(safe_mode) && !php_checkuid(source_p, NULL, CHECKUID_CHECK_FILE_AND_DIR)) {
RETURN_FALSE;
}
if (php_check_open_basedir(dest_p TSRMLS_CC)) {
RETURN_FALSE;
}
if (php_check_open_basedir(source_p TSRMLS_CC)) {
RETURN_FALSE;
}
#ifndef ZTS
ret = symlink(Z_STRVAL_PP(topath), Z_STRVAL_PP(frompath));
#else
ret = symlink(dest_p, source_p);
#endif
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto int link(string target, string link)
Create a hard link */
PHP_FUNCTION(link)
{
zval **topath, **frompath;
int ret;
char source_p[MAXPATHLEN];
char dest_p[MAXPATHLEN];
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &topath, &frompath) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(topath);
convert_to_string_ex(frompath);
if (!expand_filepath(Z_STRVAL_PP(frompath), source_p TSRMLS_CC) || !expand_filepath(Z_STRVAL_PP(topath), dest_p TSRMLS_CC)) {
RETURN_FALSE;
}
if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
{
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to link to a URL");
RETURN_FALSE;
}
if (PG(safe_mode) && !php_checkuid(dest_p, NULL, CHECKUID_CHECK_FILE_AND_DIR)) {
RETURN_FALSE;
}
if (PG(safe_mode) && !php_checkuid(source_p, NULL, CHECKUID_CHECK_FILE_AND_DIR)) {
RETURN_FALSE;
}
if (php_check_open_basedir(dest_p TSRMLS_CC)) {
RETURN_FALSE;
}
if (php_check_open_basedir(source_p TSRMLS_CC)) {
RETURN_FALSE;
}
#ifndef ZTS
ret = link(Z_STRVAL_PP(topath), Z_STRVAL_PP(frompath));
#else
ret = link(dest_p, source_p);
#endif
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
|
