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|
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 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: Pierre A. Joye <pierre@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef PHP_WIN32
#include "php.h"
#include "php_filestat.h"
#include "php_globals.h"
#include <WinBase.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_PWD_H
#include "win32/pwd.h"
#endif
#if HAVE_GRP_H
#include "win32/grp.h"
#endif
#include <errno.h>
#include <ctype.h>
#include "php_link.h"
#include "php_string.h"
/*
TODO:
- Create php_readlink (done), php_link and php_symlink in win32/link.c
- Expose them (PHPAPI) so extensions developers can use them
- define link/readlink/symlink to their php_ equivalent and use them in ext/standart/link.c
- this file is then useless and we have a portable link API
*/
#ifndef VOLUME_NAME_NT
#define VOLUME_NAME_NT 0x2
#endif
#ifndef VOLUME_NAME_DOS
#define VOLUME_NAME_DOS 0x0
#endif
/* {{{ proto string readlink(string filename)
Return the target of a symbolic link */
PHP_FUNCTION(readlink)
{
char *link;
size_t link_len;
char target[MAXPATHLEN];
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &link, &link_len) == FAILURE) {
return;
}
if (OPENBASEDIR_CHECKPATH(link)) {
RETURN_FALSE;
}
if (php_sys_readlink(link, target, MAXPATHLEN) == -1) {
php_error_docref(NULL, E_WARNING, "readlink failed to read the symbolic link (%s), error %d)", link, GetLastError());
RETURN_FALSE;
}
RETURN_STRING(target);
}
/* }}} */
/* {{{ proto int linkinfo(string filename)
Returns the st_dev field of the UNIX C stat structure describing the link */
PHP_FUNCTION(linkinfo)
{
char *link;
size_t link_len;
zend_stat_t sb;
int ret;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &link, &link_len) == FAILURE) {
return;
}
ret = VCWD_STAT(link, &sb);
if (ret == -1) {
php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
RETURN_LONG(Z_L(-1));
}
RETURN_LONG((zend_long) sb.st_dev);
}
/* }}} */
/* {{{ proto int symlink(string target, string link)
Create a symbolic link */
PHP_FUNCTION(symlink)
{
char *topath, *frompath;
size_t topath_len, frompath_len;
BOOLEAN ret;
char source_p[MAXPATHLEN];
char dest_p[MAXPATHLEN];
char dirname[MAXPATHLEN];
size_t len;
DWORD attr;
HINSTANCE kernel32;
typedef BOOLEAN (WINAPI *csla_func)(LPCSTR, LPCSTR, DWORD);
csla_func pCreateSymbolicLinkA;
kernel32 = LoadLibrary("kernel32.dll");
if (kernel32) {
pCreateSymbolicLinkA = (csla_func)GetProcAddress(kernel32, "CreateSymbolicLinkA");
if (pCreateSymbolicLinkA == NULL) {
php_error_docref(NULL, E_WARNING, "Can't call CreateSymbolicLinkA");
RETURN_FALSE;
}
} else {
php_error_docref(NULL, E_WARNING, "Can't call get a handle on kernel32.dll");
RETURN_FALSE;
}
if (zend_parse_parameters(ZEND_NUM_ARGS(), "pp", &topath, &topath_len, &frompath, &frompath_len) == FAILURE) {
return;
}
if (!expand_filepath(frompath, source_p)) {
php_error_docref(NULL, E_WARNING, "No such file or directory");
RETURN_FALSE;
}
memcpy(dirname, source_p, sizeof(source_p));
len = php_dirname(dirname, strlen(dirname));
if (!expand_filepath_ex(topath, dest_p, dirname, len)) {
php_error_docref(NULL, E_WARNING, "No such file or directory");
RETURN_FALSE;
}
if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) ||
php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) )
{
php_error_docref(NULL, E_WARNING, "Unable to symlink to a URL");
RETURN_FALSE;
}
if (OPENBASEDIR_CHECKPATH(dest_p)) {
RETURN_FALSE;
}
if (OPENBASEDIR_CHECKPATH(source_p)) {
RETURN_FALSE;
}
if ((attr = GetFileAttributes(topath)) == INVALID_FILE_ATTRIBUTES) {
php_error_docref(NULL, E_WARNING, "Could not fetch file information(error %d)", GetLastError());
RETURN_FALSE;
}
/* For the source, an expanded path must be used (in ZTS an other thread could have changed the CWD).
* For the target the exact string given by the user must be used, relative or not, existing or not.
* The target is relative to the link itself, not to the CWD. */
ret = pCreateSymbolicLinkA(source_p, topath, (attr & FILE_ATTRIBUTE_DIRECTORY ? 1 : 0));
if (!ret) {
php_error_docref(NULL, E_WARNING, "Cannot create symlink, error code(%d)", GetLastError());
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto int link(string target, string link)
Create a hard link */
PHP_FUNCTION(link)
{
char *topath, *frompath;
size_t topath_len, frompath_len;
int ret;
char source_p[MAXPATHLEN];
char dest_p[MAXPATHLEN];
/*First argument to link function is the target and hence should go to frompath
Second argument to link function is the link itself and hence should go to topath */
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss", &frompath, &frompath_len, &topath, &topath_len) == FAILURE) {
return;
}
if (!expand_filepath(frompath, source_p) || !expand_filepath(topath, dest_p)) {
php_error_docref(NULL, E_WARNING, "No such file or directory");
RETURN_FALSE;
}
if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) ||
php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY) )
{
php_error_docref(NULL, E_WARNING, "Unable to link to a URL");
RETURN_FALSE;
}
if (OPENBASEDIR_CHECKPATH(source_p)) {
RETURN_FALSE;
}
if (OPENBASEDIR_CHECKPATH(dest_p)) {
RETURN_FALSE;
}
#ifndef ZTS
ret = CreateHardLinkA(topath, frompath, NULL);
#else
ret = CreateHardLinkA(dest_p, source_p, NULL);
#endif
if (ret == 0) {
php_error_docref(NULL, 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
*/
|
