mirror of
https://github.com/php/php-src.git
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249 lines
6.8 KiB
C
249 lines
6.8 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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| Author: Pierre A. Joye <pierre@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifdef PHP_WIN32
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#include "php.h"
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#include "php_filestat.h"
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#include "php_globals.h"
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#include <WinBase.h>
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#include <stdlib.h>
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#include <string.h>
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#if HAVE_PWD_H
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#include "win32/pwd.h"
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#endif
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#if HAVE_GRP_H
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#include "win32/grp.h"
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#endif
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#include <errno.h>
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#include <ctype.h>
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#include "php_link.h"
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#include "php_string.h"
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/*
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TODO:
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- Create php_readlink (done), php_link and php_symlink in win32/link.c
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- Expose them (PHPAPI) so extensions developers can use them
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- define link/readlink/symlink to their php_ equivalent and use them in ext/standart/link.c
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- this file is then useless and we have a portable link API
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*/
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#ifndef VOLUME_NAME_NT
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#define VOLUME_NAME_NT 0x2
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#endif
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#ifndef VOLUME_NAME_DOS
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#define VOLUME_NAME_DOS 0x0
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#endif
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/* {{{ proto string readlink(string filename)
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Return the target of a symbolic link */
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PHP_FUNCTION(readlink)
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{
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char *link;
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int link_len;
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char target[MAXPATHLEN];
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p", &link, &link_len) == FAILURE) {
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return;
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}
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if (OPENBASEDIR_CHECKPATH(link)) {
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RETURN_FALSE;
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}
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if (php_sys_readlink(link, target, MAXPATHLEN) == -1) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "readlink failed to read the symbolic link (%s), error %d)", link, GetLastError());
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RETURN_FALSE;
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}
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RETURN_STRING(target);
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}
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/* }}} */
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/* {{{ proto int linkinfo(string filename)
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Returns the st_dev field of the UNIX C stat structure describing the link */
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PHP_FUNCTION(linkinfo)
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{
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char *link;
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int link_len;
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zend_stat_t sb;
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int ret;
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p", &link, &link_len) == FAILURE) {
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return;
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}
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ret = VCWD_STAT(link, &sb);
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if (ret == -1) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
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RETURN_LONG(Z_L(-1));
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}
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RETURN_LONG((zend_long) sb.st_dev);
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}
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/* }}} */
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/* {{{ proto int symlink(string target, string link)
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Create a symbolic link */
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PHP_FUNCTION(symlink)
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{
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char *topath, *frompath;
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int topath_len, frompath_len;
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BOOLEAN ret;
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char source_p[MAXPATHLEN];
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char dest_p[MAXPATHLEN];
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char dirname[MAXPATHLEN];
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size_t len;
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DWORD attr;
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HINSTANCE kernel32;
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typedef BOOLEAN (WINAPI *csla_func)(LPCSTR, LPCSTR, DWORD);
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csla_func pCreateSymbolicLinkA;
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kernel32 = LoadLibrary("kernel32.dll");
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if (kernel32) {
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pCreateSymbolicLinkA = (csla_func)GetProcAddress(kernel32, "CreateSymbolicLinkA");
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if (pCreateSymbolicLinkA == NULL) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call CreateSymbolicLinkA");
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RETURN_FALSE;
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}
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} else {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call get a handle on kernel32.dll");
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RETURN_FALSE;
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}
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "pp", &topath, &topath_len, &frompath, &frompath_len) == FAILURE) {
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return;
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}
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if (!expand_filepath(frompath, source_p TSRMLS_CC)) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
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RETURN_FALSE;
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}
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memcpy(dirname, source_p, sizeof(source_p));
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len = php_dirname(dirname, strlen(dirname));
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if (!expand_filepath_ex(topath, dest_p, dirname, len TSRMLS_CC)) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
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RETURN_FALSE;
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}
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if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
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php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
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{
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to symlink to a URL");
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RETURN_FALSE;
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}
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if (OPENBASEDIR_CHECKPATH(dest_p)) {
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RETURN_FALSE;
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}
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if (OPENBASEDIR_CHECKPATH(source_p)) {
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RETURN_FALSE;
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}
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if ((attr = GetFileAttributes(topath)) == INVALID_FILE_ATTRIBUTES) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not fetch file information(error %d)", GetLastError());
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RETURN_FALSE;
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}
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/* For the source, an expanded path must be used (in ZTS an other thread could have changed the CWD).
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* For the target the exact string given by the user must be used, relative or not, existing or not.
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* The target is relative to the link itself, not to the CWD. */
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ret = pCreateSymbolicLinkA(source_p, topath, (attr & FILE_ATTRIBUTE_DIRECTORY ? 1 : 0));
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if (!ret) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot create symlink, error code(%d)", GetLastError());
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RETURN_FALSE;
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}
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RETURN_TRUE;
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}
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/* }}} */
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/* {{{ proto int link(string target, string link)
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Create a hard link */
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PHP_FUNCTION(link)
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{
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char *topath, *frompath;
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int topath_len, frompath_len;
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int ret;
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char source_p[MAXPATHLEN];
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char dest_p[MAXPATHLEN];
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/*First argument to link function is the target and hence should go to frompath
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Second argument to link function is the link itself and hence should go to topath */
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &frompath, &frompath_len, &topath, &topath_len) == FAILURE) {
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return;
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}
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if (!expand_filepath(frompath, source_p TSRMLS_CC) || !expand_filepath(topath, dest_p TSRMLS_CC)) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
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RETURN_FALSE;
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}
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if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
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php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
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{
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to link to a URL");
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RETURN_FALSE;
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}
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if (OPENBASEDIR_CHECKPATH(source_p)) {
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RETURN_FALSE;
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}
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if (OPENBASEDIR_CHECKPATH(dest_p)) {
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RETURN_FALSE;
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}
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#ifndef ZTS
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ret = CreateHardLinkA(topath, frompath, NULL);
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#else
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ret = CreateHardLinkA(dest_p, source_p, NULL);
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#endif
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if (ret == 0) {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
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RETURN_FALSE;
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}
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RETURN_TRUE;
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}
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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: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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*/
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