331 lines
9.8 KiB
PHP
331 lines
9.8 KiB
PHP
<?php
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/**
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* Directory administration code.
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*
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* @author Jan Dittberner <jan@dittberner.info>
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* @version $Id$
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* @license GPL
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* @package WebDAVAdmin
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*
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* Copyright (c) 2007 Jan Dittberner
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*
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* This file is part of WebDAVAdmin.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA.
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*/
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/** Include common code. */
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include_once('common.inc.php');
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/** Format string for group lines in .htaccess files. */
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define('GROUPLINEFORMAT', "require group %s\n");
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/** Regular expression for finding group lines in .htaccess files. */
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define('GROUPLINERE', '/^require\s+group\s+(.*)$/i');
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/** Regular expression matching legal directory names. */
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define('DIRNAMERE', '/^[a-zA-Z0-9 -_.]+$/');
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/**
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* List of mandatory groups. These groups are assigned to every new or
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* changed directory.
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*/
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$mandatorygroups = array(ADMIN_GROUP);
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/**
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* Gets the group names allowed to access the given directory from its
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* .htaccess file. Mandatory groups are excluded.
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*
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* @param string $dirname a fully qualified directory name
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* @return an array of group names
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*/
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function getDirGroupsFromHtaccess($dirname) {
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$htaccessname = $dirname . DIRECTORY_SEPARATOR . ".htaccess";
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$groups = array();
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if (false !== ($fh = fopen($htaccessname, "r"))) {
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while (!feof($fh)) {
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$buffer = fgets($fh);
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if (preg_match_all(GROUPLINERE, trim($buffer), $matches)) {
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$grouparr = explode(" ", $matches[1][0]);
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foreach ($grouparr as $group) {
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$group = trim($group);
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if (!in_array($group, $GLOBALS['mandatorygroups'])) {
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array_push($groups, $group);
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}
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}
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}
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}
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}
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fclose($fh);
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return $groups;
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}
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/**
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* Gets the names of groups for a directory.
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*
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* @param string $dirname directory name relative to {@link DAV_ROOT}
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* @return an array of group names
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* @see #getDirGroupsFromHtaccess(string)
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*/
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function getDirGroups($dirname) {
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return getDirGroupsFromHtaccess(DAV_ROOT . DIRECTORY_SEPARATOR . $dirname);
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}
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/**
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* Counts the visible files and their accumulated size in a directory
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* tree.
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*
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* @param string $dirname a fully qualified directory name
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* @param array $retval a two component array index 0 is the file
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* count, index 2 is the accumulated size of files
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* @return array updated with the data from subdirectories and files
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* of $dirname
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*/
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function countFilesRecursive($dirname, $retval = array(0, 0)) {
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$dh = opendir($dirname);
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while (false !== ($entry = readdir($dh))) {
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$fullname = $dirname . DIRECTORY_SEPARATOR . $entry;
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if (strpos($entry, '.') !== 0) {
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if (is_dir($fullname)) {
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$retval = countFilesRecursive($fullname, $retval);
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} else if (is_file($fullname)) {
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$retval = array($retval[0] + 1, $retval[1] + filesize($fullname));
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}
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}
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}
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closedir($dh);
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return $retval;
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}
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/**
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* Gets the data of a directory.
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*
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* @param string $dirname a fully qualified directory name
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* @return array of containing directory data
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*/
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function getDirectoryData($dirname) {
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$dir = array();
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$dir['name'] = basename($dirname);
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$dir['groups'] = getDirGroupsFromHtaccess($dirname);
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list($dir['filecount'], $dir['filesize']) = countFilesRecursive($dirname);
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$dir['maydelete'] = ($dir['filecount'] == 0) ? 1 : 0;
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$dir['filesize'] = sprintf("%d kBytes", $dir['filesize'] / 1024);
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return $dir;
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}
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/**
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* Gets XML encoded data of a directory.
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*
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* @param string $dirname dirname relative to {@link DAV_ROOT}
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* @return XML string
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*/
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function getDirectoryDataAsXml($dirname) {
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if (is_dir(DAV_ROOT . $dirname)) {
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$dirdata = getDirectoryData(DAV_ROOT . $dirname);
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header("Content-Type: text/xml; charset=UTF-8");
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return sprintf('<?xml version="1.0" encoding="utf8"?><directory><dirname>%s</dirname><groups>%s</groups><filecount>%d</filecount><filesize>%s</filesize><maydelete>%d</maydelete></directory>', $dirdata['name'], implode(", ", $dirdata['groups']), $dirdata['filecount'], $dirdata['filesize'], $dirdata['maydelete']);
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} else {
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errorAsXml(sprintf(_("Invalid directory name %s!"), $dirname));
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}
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}
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/**
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* Gets XML encoded data of a deleted directory.
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*
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* @param string $dirname directory name relative to {@link DAV_ROOT}
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* @return XML string
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*/
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function getDeletedDirectoryData($dirname) {
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header("Content-Type: text/xml; charset=UTF-8");
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return sprintf('<?xml version="1.0" encoding="utf8"?><directory><dirname>%s</dirname></directory>', $dirname);
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}
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/**
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* Gets the list of directory data for all valid directories below
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* {@link DAV_ROOT}.
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*
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* @return array of directory data arrays
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* @see #getDirectoryData(string)
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*/
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function getDirectories() {
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$dirs = array();
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if (false !== ($entries = scandir(DAV_ROOT))) {
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foreach ($entries as $entry) {
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if (is_dir(DAV_ROOT . $entry)) {
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if (strpos($entry, '.') !== 0) {
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if ($entry != ADMIN_DIR) {
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array_push($dirs, getDirectoryData(DAV_ROOT . $entry));
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}
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}
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}
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}
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}
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return $dirs;
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}
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/**
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* Sets the groups of a directory in its .htaccess file. Mandatory
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* groups are added automatically.
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*
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* @param string $dirname directory name relative to {@link DAV_ROOT}
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* @param array &$groups reference to a list of group names
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*/
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function setGroups($dirname, &$groups) {
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$fullname = DAV_ROOT . $dirname;
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foreach ($groups as $key => $value) {
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$groups[$key] = trim($value);
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}
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foreach ($GLOBALS['mandatorygroups'] as $mgroup) {
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if (!in_array($mgroup, $groups)) {
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array_push($groups, $mgroup);
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}
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}
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$found = false;
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$lines = array();
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$found = false;
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if (is_dir($fullname)) {
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$htaccess = $fullname . DIRECTORY_SEPARATOR . ".htaccess";
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if (file_exists($htaccess) && (false !== ($fh = fopen($htaccess, "r")))) {
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while (!feof($fh)) {
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$buffer = fgets($fh);
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if (preg_match(GROUPLINERE, $buffer)) {
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array_push($lines, sprintf(GROUPLINEFORMAT, join(" ", $groups)));
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$found = true;
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} else {
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array_push($lines, $buffer);
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}
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}
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fclose($fh);
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}
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if (!$found) {
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array_push($lines, sprintf(GROUPLINEFORMAT, join(" ", $groups)));
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}
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if (false !== ($fh = fopen($htaccess, "w"))) {
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foreach ($lines as $line) {
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fwrite($fh, $line);
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}
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fclose($fh);
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}
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}
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}
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/**
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* Updates a directory to be accessible by the given list of
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* groups. The directory is created if it doesn't exist.
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*
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* @param string $dirname directory name relative to {@link DAV_ROOT}
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* @param array $groups a list of group names
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*/
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function updateDirectory($dirname, $groups) {
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if (preg_match(DIRNAMERE, $dirname, $matches)) {
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if ($dirname != ADMIN_DIR) {
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$fullname = DAV_ROOT . $dirname;
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if (file_exists($fullname)) {
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if (!is_dir($fullname)) {
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errorAsXml(sprintf(_("There already is a directory entry named %s, but it's not a directory!"), $dirname));
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}
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} else {
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mkdir($fullname);
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}
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setGroups($dirname, $groups);
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}
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return;
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}
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errorAsXml(sprintf(_("Invalid directory name %s!"), $dirname));
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}
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/**
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* Recursively deletes the given directory.
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*
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* @param string $fullname fully qualified directory name
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*/
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function delrecursive($fullname) {
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$dh = opendir($fullname);
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while (false !== ($entry = readdir($dh))) {
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if ($entry != "." && $entry != "..") {
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$entryname = $fullname . DIRECTORY_SEPARATOR . $entry;
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if (is_dir($entryname)) {
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delrecursive($entryname);
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} else {
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unlink($entryname);
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}
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}
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}
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closedir($dh);
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rmdir($fullname);
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return true;
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}
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/**
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* Deletes the given directory if it has a valid name and is not the
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* administration interface directory.
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*
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* @param string $dirname directory name relative to {@link DAV_ROOT}
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*/
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function deleteDirectory($dirname) {
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if (preg_match(DIRNAMERE, $dirname, $matches)) {
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if ($dirname != ADMIN_DIR) {
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$fullname = DAV_ROOT . $dirname;
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if (is_dir($fullname)) {
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return delrecursive($fullname);
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}
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}
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errorAsXml(_("Tried to delete the administration interface directory!"));
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}
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errorAsXml(sprintf(_("Invalid directory name %s!"), $dirname));
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}
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if ($_GET) {
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// handle get requests with data
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if ($_GET['method']) {
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switch ($_GET['method']) {
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case 'getdirectorydata':
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print getDirectoryDataAsXml($_GET['dirname']);
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break;
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default:
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errorAsXml(sprintf(_("Unexpected values %s!"), serialize($_GET)));
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}
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} else {
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invalidCall();
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}
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} elseif ($_POST) {
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// handle post requests with data
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if ($_POST['method']) {
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switch ($_POST['method']) {
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case 'submitdirectory':
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updateDirectory($_POST['dirname'], explode(",", $_POST['groups']));
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print getDirectoryDataAsXml($_POST['dirname']);
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break;
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case 'deletedirectory':
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if (deleteDirectory($_POST['dirname'])) {
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print getDeletedDirectoryData($_POST['dirname']);
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} else {
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errorAsXml(_("Delete failed!"));
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}
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break;
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default:
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errorAsXml(sprintf(_("Unexpected values %s!"), serialize($_POST)));
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}
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} else {
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invalidCall();
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}
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} else {
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// handle requests without data
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header("Content-Type: text/html; charset=UTF-8");
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$smarty->assign("directories", getDirectories());
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$smarty->display("directories.html");
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}
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?>
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