450 lines
16 KiB
PHP
450 lines
16 KiB
PHP
<?php
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/*
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----------------------------------------------------------------------
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LICENSE
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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 (GPL)
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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To read the license please visit http://www.gnu.org/copyleft/gpl.html
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----------------------------------------------------------------------
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*/
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/**
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* This class handle folder web restricted access through .htaccess/.htpassword
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* files.
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*
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* @copyright AlternC-Team 2000-2017 https://alternc.com/
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*/
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class m_hta {
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/**
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* Password kind used in this class (hook for admin class)
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* @return array
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*/
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function alternc_password_policy() {
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return array("hta" => "Protected folders passwords");
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}
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/**
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* hook called by menu class to add a menu
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* to the left panel
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* @return array
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*/
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function hook_menu() {
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$obj = array(
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'title' => _("Protected folders"),
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'ico' => 'images/password.png',
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'link' => 'hta_list.php',
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'pos' => 50,
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);
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return $obj;
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}
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/**
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* Create a protected folder (.htaccess et .htpasswd)
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* @param string $dir Folder to protect (relative to user root)
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* @return boolean TRUE if the folder has been protected, or FALSE if an error occurred
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*
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* @global m_mem $mem
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* @global m_bro $bro
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* @global m_messages $msg
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* @param string $dir
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* @return boolean
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*/
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function CreateDir($dir) {
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global $bro, $msg;
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$msg->log("hta", "createdir", $dir);
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$absolute = $bro->convertabsolute($dir, 0);
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if (!is_dir($absolute)) {
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$msg->raise("ERROR", "hta", _("The folder '%s' does not exist"), $dir);
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return false;
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}
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if (!file_exists("$absolute/.htaccess")) {
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if (!@touch("$absolute/.htaccess")) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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$file = @fopen("$absolute/.htaccess", "r+");
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if (!$file) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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fseek($file, 0);
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$param = "AuthUserFile \"$absolute/.htpasswd\"\nAuthName \"" . _("Restricted area") . "\"\nAuthType Basic\nrequire valid-user\n";
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fwrite($file, $param);
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fclose($file);
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}
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if (!file_exists("$absolute/.htpasswd")) {
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if (!touch("$absolute/.htpasswd")) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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return true;
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}
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return true;
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}
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/**
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* Returns the list of all user folder currently protected by a .htpasswd file
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*
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* @global m_messages $msg
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* @global m_mem $mem
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* @return array Array containing user folder list
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*/
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function ListDir() {
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global$msg, $mem;
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$msg->log("hta", "listdir");
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$sortie = array();
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$absolute = ALTERNC_HTML . "/" . substr($mem->user["login"], 0, 1) . "/" . $mem->user["login"];
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exec("find " . escapeshellarg($absolute) . " -name .htpasswd|sort", $sortie);
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if (!count($sortie)) {
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$msg->raise("INFO", "hta", _("No protected folder"));
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return false;
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}
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$pattern = "/^" . preg_quote(ALTERNC_HTML, "/") . "\/.\/[^\/]*\/(.*)\/\.htpasswd/";
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$r = array();
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for ($i = 0; $i < count($sortie); $i++) {
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$matches = array();
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preg_match($pattern, $sortie[$i], $matches);
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$tmpm = isset($matches[1]) ? '/' . $matches[1] : '';
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$r[$i] = $tmpm . "/";
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}
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return $r;
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}
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/**
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* Tells if a folder is protected.
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*
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* @global m_mem $mem
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* @global m_messages $msg
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* @param string $dir Folder to check
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* @return boolean If the folder is protected, or FALSE if it is not
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*/
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function is_protected($dir) {
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global $mem, $msg;
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$msg->log("hta", "is_protected", $dir);
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$absolute = ALTERNC_HTML . "/" . substr($mem->user["login"], 0, 1) . "/" . $mem->user["login"] . "/$dir";
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if (file_exists("$absolute/.htpasswd")) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Returns the list of login for a protected folder.
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*
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* @global m_mem $mem
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* @global m_messages $msg
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* @param string $dir The folder to lookup (relative to user root)
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* @return array An array containing the list of logins from the .htpasswd file, or FALSE
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*/
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function get_hta_detail($dir) {
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global $mem, $msg;
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$msg->log("hta", "get_hta_detail");
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$absolute = ALTERNC_HTML . "/" . substr($mem->user["login"], 0, 1) . "/" . $mem->user["login"] . "/$dir";
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if (file_exists("$absolute/.htaccess")) {
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/* if (!_reading_htaccess($absolute)) {
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return false;
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}
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*/
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}
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$file = @fopen("$absolute/.htpasswd", "r");
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$i = 0;
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$res = array();
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if (!$file) {
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return false;
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}
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// TODO: Test the validity of a .htpasswd
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while (!feof($file)) {
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$s = fgets($file, 1024);
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$t = explode(":", $s);
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if ($t[0] != $s) {
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$res[$i] = $t[0];
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$i = $i + 1;
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}
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}
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fclose($file);
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return $res;
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}
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/**
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* Unprotect a folder
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*
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* @global m_mem $mem
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* @global m_bro $bro
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* @global m_messages $msg
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* @param string $dir Folder to unprotect, relative to user root
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* @param boolean $skip For testing purpose mainly, skips the full user path search
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* @return boolean TRUE if the folder has been unprotected, or FALSE if an error occurred
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*/
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function DelDir($dir, $skip = false) {
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global $bro, $msg;
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$msg->log("hta", "deldir", $dir);
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$dir = $bro->convertabsolute($dir, $skip);
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if (!$dir) {
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$msg->raise("ERROR", "hta", ("The folder '%s' does not exist"), $dir);
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return false;
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}
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$htaccess_file = "$dir/.htaccess";
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if (!is_readable($htaccess_file)) {
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$msg->raise("ERROR", "hta", _("I cannot read the file '%s'"), $htaccess_file);
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}
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$fileLines = file($htaccess_file);
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$patternList = array(
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"AuthUserFile.*$",
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"AuthName.*$",
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"AuthType Basic.*$",
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"require valid-user.*$"
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);
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$count_lines = 0;
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foreach ($fileLines as $key => $line) {
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foreach ($patternList as $pattern) {
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if (preg_match("/" . $pattern . "/", $line)) {
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$count_lines++;
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unset($fileLines[$key]);
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}
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}
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}
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// If no changes
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if (!$count_lines) {
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$msg->raise("ALERT", "hta", _("Unexpected: No changes made to '%s'"), $htaccess_file);
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}
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// If file is empty, remove it
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if (!count($fileLines)) {
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if (!unlink($htaccess_file)) {
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$msg->raise("ERROR", "hta", _("I could not delete the file '%s'"), $htaccess_file);
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}
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} else {
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file_put_contents($htaccess_file, implode("\n", $fileLines));
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}
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$htpasswd_file = "$dir/.htpasswd";
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if (!is_writable($htpasswd_file)) {
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$msg->raise("ERROR", "hta", _("I cannot read the file '%s'"), $htpasswd_file);
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} else if (!unlink($htpasswd_file)) {
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$msg->raise("ERROR", "hta", _("I cannot delete the file '%s/.htpasswd'"), $dir);
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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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* Add a user to a protected folder
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*
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* @global m_messages $msg
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* @global m_bro $bro
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* @global m_admin $admin
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* @param string $user
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* @param string $password
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* @param string $dir
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* @param string $password The password to add (cleartext)
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* @param string $dir The folder we add it to (relative to user root).
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* @return boolean TRUE if the user has been added, or FALSE if an error occurred
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*/
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function add_user($user, $password, $dir) {
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global $msg, $bro, $admin;
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$msg->log("hta", "add_user", $user . "/" . $dir);
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if (empty($user)) {
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$msg->raise("ERROR", 'hta', _("Please enter a user"));
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return false;
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}
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if (empty($password)) {
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$msg->raise("ERROR", 'hta', _("Please enter a password"));
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return false;
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}
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$absolute = $bro->convertabsolute($dir, 0);
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if (!file_exists($absolute)) {
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$msg->raise("ERROR", "hta", _("The folder '%s' does not exist"), $dir);
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return false;
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}
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// @todo delete cf!. functions.php checkloginemail definition
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if (checkloginmail($user)) {
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// Check this password against the password policy using common API :
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if (is_callable(array($admin, "checkPolicy"))) {
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if (!$admin->checkPolicy("hta", $user, $password)) {
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return false; // The error has been raised by checkPolicy()
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}
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}
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$file = @fopen("$absolute/.htpasswd", "a+");
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if (!$file) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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fseek($file, 0);
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while (!feof($file)) {
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$s = fgets($file, 1024);
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$t = explode(":", $s);
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if ($t[0] == $user) {
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$msg->raise("ERROR", "hta", _("The user '%s' already exist for this folder"), $user);
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return false;
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}
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}
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fseek($file, SEEK_END);
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if (empty($t[1]) || substr($t[1], -1) != "\n") {
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fwrite($file, "\n");
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}
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fwrite($file, "$user:" . _md5cr($password) . "\n");
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fclose($file);
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return true;
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} else {
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$msg->raise("ERROR", "hta", _("Please enter a valid username"));
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return false;
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}
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}
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/**
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* Delete a user from a protected folder.
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*
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* @global m_bro $bro
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* @global m_messages $msg
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* @param array $lst An array with login to delete.
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* @param string $dir The folder, relative to user root, where we want to delete users.
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* @return boolean TRUE if users has been deleted, or FALSE if an error occurred.
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*/
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function del_user($lst, $dir) {
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global $bro, $msg;
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$msg->log("hta", "del_user", $lst . "/" . $dir);
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$absolute = $bro->convertabsolute($dir, 0);
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if (!file_exists($absolute)) {
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$msg->raise("ERROR", "hta", _("The folder '%s' does not exist"), $dir);
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return false;
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}
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touch("$absolute/.htpasswd.new");
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$file = fopen("$absolute/.htpasswd", "r");
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$newf = fopen("$absolute/.htpasswd.new", "a");
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if (!$file || !$newf) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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reset($lst);
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fseek($file, 0);
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while (!feof($file)) {
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$s = fgets($file, 1024);
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$t = explode(":", $s);
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if (!in_array($t[0], $lst) && ($t[0] != "\n")) {
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fseek($newf, 0);
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fwrite($newf, "$s");
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}
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}
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fclose($file);
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fclose($newf);
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unlink("$absolute/.htpasswd");
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rename("$absolute/.htpasswd.new", "$absolute/.htpasswd");
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return true;
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}
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/**
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* Change the password of a user in a protected folder
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* @param string $user The users whose password should be changed
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* @param string $newpass The new password of this user
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* @param string $dir The folder, relative to user root, in which we will change a password
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* @return boolean TRUE if the password has been changed, or FALSE if an error occurred
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*/
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function change_pass($user, $newpass, $dir) {
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global $bro, $msg, $admin;
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$msg->log("hta", "change_pass", $user . "/" . $dir);
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$absolute = $bro->convertabsolute($dir, 0);
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if (!file_exists($absolute)) {
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$msg->raise("ERROR", "hta", _("The folder '%s' does not exist"), $dir);
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return false;
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}
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// Check this password against the password policy using common API :
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if (is_callable(array($admin, "checkPolicy"))) {
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if (!$admin->checkPolicy("hta", $user, $newpass)) {
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return false; // The error has been raised by checkPolicy()
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}
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}
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touch("$absolute/.htpasswd.new");
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$file = fopen("$absolute/.htpasswd", "r");
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$newf = fopen("$absolute/.htpasswd.new", "a");
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if (!$file || !$newf) {
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$msg->raise("ERROR", "hta", _("File already exist"));
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return false;
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}
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while (!feof($file)) {
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$s = fgets($file, 1024);
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$t = explode(":", $s);
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if ($t[0] != $user) {
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fwrite($newf, "$s");
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}
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}
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fwrite($newf, "$user:" . _md5cr($newpass) . "\n");
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fclose($file);
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fclose($newf);
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unlink("$absolute/.htpasswd");
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rename("$absolute/.htpasswd.new", "$absolute/.htpasswd");
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return true;
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}
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/**
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* Check that a .htaccess file is valid (for authentication)
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*
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* @global m_messages $msg
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* @param type $absolute
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* @param string $absolute Folder we want to check (relative to user root)
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* @return boolean TRUE is the .htaccess is protecting this folder, or FALSE else
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*/
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private function _reading_htaccess($absolute) {
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global $msg;
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$msg->log("hta", "_reading_htaccess", $absolute);
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$file = fopen("$absolute/.htaccess", "r+");
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$lignes = array(1, 1, 1);
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$errr = 0;
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if (!$file) {
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return false;
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}
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while (!feof($file) && !$errr) {
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$s = fgets($file, 1024);
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if (substr($s, 0, 12) != "RewriteCond " && substr($s, 0, 14) != "ErrorDocument " && substr($s, 0, 12) != "RewriteRule " && substr($s, 0, 14) != "RewriteEngine " && trim($s) != "") {
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$errr = 1;
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}
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if (strtolower(trim($s)) == strtolower("authuserfile $absolute/.htpasswd")) {
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$lignes[0] = 0;
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$errr = 0;
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} // authuserfile
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if (strtolower(trim($s)) == "require valid-user") {
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$lignes[1] = 0;
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$errr = 0;
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} //require
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if (strtolower(trim($s)) == "authtype basic") {
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$lignes[2] = 0;
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$errr = 0;
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} //authtype
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} // Reading config file
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fclose($file);
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if ($errr || in_array(0, $lignes)) {
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$msg->raise("ERROR", "hta", _("An incompatible .htaccess file exists in this folder"));
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return false;
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}
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return true;
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}
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} /* class m_hta */
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