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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: |
| |
+----------------------------------------------------------------------+
*/
/* $Id: link.c,v 1.40 2000/01/01 04:31:16 sas Exp $ */
#include "php.h"
#include "internal_functions.h"
#include "php3_filestat.h"
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <sys/stat.h>
#include <string.h>
#if HAVE_PWD_H
#if MSVC5
#include "win32/pwd.h"
#else
#include <pwd.h>
#endif
#endif
#ifdef HAVE_GRP_H
# if MSVC5
# include "win32/grp.h"
# else
# include <grp.h>
# endif
#endif
#include <errno.h>
#include <ctype.h>
#include "safe_mode.h"
#include "php3_link.h"
/* {{{ proto string readlink(string filename)
Return the target of a symbolic link */
void php3_readlink(INTERNAL_FUNCTION_PARAMETERS)
{
#ifdef HAVE_SYMLINK
pval *filename;
char buff[256];
int ret;
if (ARG_COUNT(ht) != 1 || getParameters(ht, 1, &filename) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(filename);
ret = readlink(filename->value.str.val, buff, 255);
if (ret == -1) {
php3_error(E_WARNING, "readlink failed (%s)", strerror(errno));
RETURN_FALSE;
}
/* Append NULL to the end of the string */
buff[ret] = '\0';
RETURN_STRING(buff,1);
#endif
}
/* }}} */
/* {{{ proto int linkinfo(string filename)
Returns the st_dev field of the UNIX C stat structure describing the link */
void php3_linkinfo(INTERNAL_FUNCTION_PARAMETERS)
{
#ifdef HAVE_SYMLINK
pval *filename;
struct stat sb;
int ret;
if (ARG_COUNT(ht) != 1 || getParameters(ht, 1, &filename) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(filename);
ret = lstat(filename->value.str.val, &sb);
if (ret == -1) {
php3_error(E_WARNING, "LinkInfo failed (%s)", strerror(errno));
RETURN_LONG(-1L);
}
RETURN_LONG((long) sb.st_dev);
#endif
}
/* }}} */
/* {{{ proto int symlink(string target, string link)
Create a symbolic link */
void php3_symlink(INTERNAL_FUNCTION_PARAMETERS)
{
#ifdef HAVE_SYMLINK
pval *topath, *frompath;
int ret;
if (ARG_COUNT(ht) != 2 || getParameters(ht, 2, &topath, &frompath) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(topath);
convert_to_string(frompath);
if (php3_ini.safe_mode && !_php3_checkuid(topath->value.str.val, 2)) {
RETURN_FALSE;
}
if (!strncasecmp(topath->value.str.val,"http://",7) || !strncasecmp(topath->value.str.val,"ftp://",6)) {
php3_error(E_WARNING, "Unable to symlink to a URL");
RETURN_FALSE;
}
ret = symlink(topath->value.str.val, frompath->value.str.val);
if (ret == -1) {
php3_error(E_WARNING, "SymLink failed (%s)", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
#endif
}
/* }}} */
/* {{{ proto int link(string target, string link)
Create a hard link */
void php3_link(INTERNAL_FUNCTION_PARAMETERS)
{
#ifdef HAVE_LINK
pval *topath, *frompath;
int ret;
if (ARG_COUNT(ht) != 2 || getParameters(ht, 2, &topath, &frompath) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(topath);
convert_to_string(frompath);
if (php3_ini.safe_mode && !_php3_checkuid(topath->value.str.val, 2)) {
RETURN_FALSE;
}
if (!strncasecmp(topath->value.str.val,"http://",7) || !strncasecmp(topath->value.str.val,"ftp://",6)) {
php3_error(E_WARNING, "Unable to link to a URL");
RETURN_FALSE;
}
ret = link(topath->value.str.val, frompath->value.str.val);
if (ret == -1) {
php3_error(E_WARNING, "Link failed (%s)", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
#endif
}
/* }}} */
/* {{{ proto int unlink(string filename)
Delete a file */
void php3_unlink(INTERNAL_FUNCTION_PARAMETERS)
{
pval *filename;
int ret;
TLS_VARS;
if (ARG_COUNT(ht) != 1 || getParameters(ht, 1, &filename) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(filename);
if (php3_ini.safe_mode && !_php3_checkuid(filename->value.str.val, 2)) {
RETURN_FALSE;
}
ret = unlink(filename->value.str.val);
if (ret == -1) {
php3_error(E_WARNING, "Unlink failed (%s)", strerror(errno));
RETURN_FALSE;
}
/* Clear stat cache */
php3_clearstatcache(INTERNAL_FUNCTION_PARAM_PASSTHRU);
RETURN_TRUE;
}
/* }}} */
function_entry link_functions[] = {
{"readlink", php3_readlink, NULL},
{"linkinfo", php3_linkinfo, NULL},
{"symlink", php3_symlink, NULL},
{"link", php3_link, NULL},
{"unlink", php3_unlink, NULL},
{NULL, NULL, NULL}
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
|
