auth.inc.php

   1 <?php
   2 date_default_timezone_set('Europe/Amsterdam');
   3
   4 class User
   5 {
   6         function __construct($dir, $existing = TRUE)
   7         {
   8                 if (!file_exists($dir) and $existing) {
   9                         throw new Exception("Gebruiker niet gevonden in $dir");
  10                 }
  11                 $this->dir = $dir;
  12                 $this->login = basename($dir);
  13         }
  14
  15         function __get($col)
  16         {
  17                 return $this->$col = $this->$col();  # run method and cache
  18         }
  19
  20         function rawname()
  21         {
  22                 return rtrim(@file_get_contents("{$this->dir}/name.txt"));
  23         }
  24
  25         function name()
  26         {
  27                 return htmlspecialchars(implode(' & ', explode("\n", $this->rawname)));
  28         }
  29
  30         function html()
  31         {
  32                 $name = htmlspecialchars($this->login);
  33                 if ($this->name and $this->name != $name) {
  34                         $name = "{$this->name}<small> @$name</small>";
  35                 }
  36                 return $name;
  37         }
  38
  39         function email()
  40         {
  41                 return rtrim(@file_get_contents("{$this->dir}/email.txt"));
  42         }
  43
  44         function admin($permission = NULL)
  45         {
  46                 if (isset($permission)) {
  47                         if (!$this->admin) {
  48                                 return FALSE;  # empty results
  49                         }
  50                         preg_match_all('{[ /]}', $permission, $parts, PREG_OFFSET_CAPTURE);
  51                         foreach ($parts[0] as $part) {
  52                                 if (isset($this->admin[substr($permission, 0, $part[1])])) {
  53                                         return TRUE;  # partial match
  54                                 }
  55                         }
  56                         return isset($this->admin[$permission]);  # check level
  57                 }
  58                 if (!@file_exists("{$this->dir}/.admin")) {
  59                         return FALSE;  # not an admin
  60                 }
  61                 return array_fill_keys(explode("\n", file_get_contents("{$this->dir}/.admin")), TRUE);
  62         }
  63
  64         function seen()
  65         {
  66                 return @filemtime("{$this->dir}/last.log");
  67         }
  68
  69         function logclient()
  70         {
  71                 if ($log = @fopen("{$this->dir}/last.log", 'w')) {
  72                         $line = $_SERVER['REMOTE_ADDR'].' '.$_SERVER['HTTP_USER_AGENT'];
  73                         fwrite($log, $line."\n");
  74                 }
  75         }
  76 }
  77
  78 function login_password_verify($input, $test)
  79 {
  80         if (substr($test, 0, 1) != '$') {
  81                 # plaintext match for uncrypted passwords
  82                 return $input === $test;
  83         }
  84         return password_verify($input, $test);
  85 }
  86
  87 function login_setcookie()
  88 {
  89         global $User;
  90         return setcookie('login', $User->auth, 0, '/');
  91 }
  92
  93 function login($inuser, $inpass = NULL)
  94 {
  95         if (empty($inuser)) return;
  96         if (!isset($inpass)) {
  97                 @list ($inuser, $inauth) = explode(':', $inuser, 2);
  98         }
  99
 100         # find password data by user name
 101         $userdir = 'profile/'.preg_replace('/[^a-z0-9]+/', '-', strtolower($inuser));
 102         $pwfile = "$userdir/.passwd";
 103         if (!file_exists($pwfile)) return;
 104         $usertest = trim(file_get_contents($pwfile));
 105         if (!$usertest) return;
 106
 107         # verify password
 108         $authhash = md5($usertest);
 109         if (isset($inpass)) {
 110                 if (!login_password_verify($inpass, $usertest)) return;
 111         }
 112         else {
 113                 if ($inauth !== $authhash) return;
 114         }
 115
 116         if (function_exists('apache_note')) apache_note('user', $inuser);
 117
 118         $user = new User($userdir);
 119         $user->logclient();
 120         $user->pass = $usertest;
 121         $user->auth = "$inuser:$authhash";
 122         return $user;
 123 }
 124
 125 if (isset($_COOKIE['login'])) {
 126         global $User;
 127         $User = login($_COOKIE['login']);
 128 }
 129