include/auth.php

   1 <?php
   2
   3
   4 require_once('include/security.php');
   5
   6 function nuke_session() {
   7         unset($_SESSION['authenticated']);
   8         unset($_SESSION['uid']);
   9         unset($_SESSION['visitor_id']);
  10         unset($_SESSION['administrator']);
  11         unset($_SESSION['cid']);
  12         unset($_SESSION['theme']);
  13         unset($_SESSION['mobile-theme']);
  14         unset($_SESSION['page_flags']);
  15         unset($_SESSION['submanage']);
  16         unset($_SESSION['my_url']);
  17         unset($_SESSION['my_address']);
  18         unset($_SESSION['addr']);
  19         unset($_SESSION['return_url']);
  20 }
  21
  22
  23 // login/logout
  24
  25
  26
  27
  28 if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
  29
  30         if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  31
  32                 // process logout request
  33                 call_hooks("logging_out");
  34                 nuke_session();
  35                 info( t('Logged out.') . EOL);
  36                 goaway(z_root());
  37         }
  38
  39         if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
  40                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  41                         intval($_SESSION['visitor_id'])
  42                 );
  43                 if(count($r)) {
  44                         $a->contact = $r[0];
  45                 }
  46         }
  47
  48         if(x($_SESSION,'uid')) {
  49
  50                 // already logged in user returning
  51
  52                 $check = get_config('system','paranoia');
  53                 // extra paranoia - if the IP changed, log them out
  54                 if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  55                         logger('Session address changed. Paranoid setting in effect, blocking session. '
  56                                 . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
  57                         nuke_session();
  58                         goaway(z_root());
  59                 }
  60
  61                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  62                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
  63                         intval($_SESSION['uid'])
  64                 );
  65
  66                 if(! count($r)) {
  67                         nuke_session();
  68                         goaway(z_root());
  69                 }
  70
  71                 authenticate_success($r[0]);
  72         }
  73 }
  74 else {
  75
  76         if(isset($_SESSION)) {
  77                 nuke_session();
  78         }
  79
  80         if((x($_POST,'password')) && strlen($_POST['password']))
  81                 $encrypted = hash('whirlpool',trim($_POST['password']));
  82         else {
  83                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
  84                    (x($_POST,'username')) && strlen($_POST['username'])) {
  85
  86                         $noid = get_config('system','no_openid');
  87
  88                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
  89
  90                         // validate_url alters the calling parameter
  91
  92                         $temp_string = $openid_url;
  93
  94                         // if it's an email address or doesn't resolve to a URL, fail.
  95
  96                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
  97                                 $a = get_app();
  98                                 notice( t('Login failed.') . EOL);
  99                                 goaway(z_root());
 100                                 // NOTREACHED
 101                         }
 102
 103                         // Otherwise it's probably an openid.
 104
 105                         try {
 106                         require_once('library/openid.php');
 107                         $openid = new LightOpenID;
 108                         $openid->identity = $openid_url;
 109                         $_SESSION['openid'] = $openid_url;
 110                         $a = get_app();
 111                         $openid->returnUrl = $a->get_baseurl(true) . '/openid';
 112                         goaway($openid->authUrl());
 113                         } catch (Exception $e) {
 114                             notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
 115                         }
 116                         // NOTREACHED
 117                 }
 118         }
 119
 120         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 121
 122                 $record = null;
 123
 124                 $addon_auth = array(
 125                         'username' => trim($_POST['username']),
 126                         'password' => trim($_POST['password']),
 127                         'authenticated' => 0,
 128                         'user_record' => null
 129                 );
 130
 131                 /**
 132                  *
 133                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 134                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 135                  * and later plugins should not interfere with an earlier one that succeeded.
 136                  *
 137                  */
 138
 139                 call_hooks('authenticate', $addon_auth);
 140
 141                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 142                         $record = $addon_auth['user_record'];
 143                 }
 144                 else {
 145
 146                         // process normal login request
 147
 148                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 149                                 FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 150                                 AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
 151                                 dbesc(trim($_POST['username'])),
 152                                 dbesc(trim($_POST['username'])),
 153                                 dbesc($encrypted)
 154                         );
 155                         if(count($r))
 156                                 $record = $r[0];
 157                 }
 158
 159                 if((! $record) || (! count($record))) {
 160                         logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 161                         notice( t('Login failed.') . EOL );
 162                         goaway(z_root());
 163                 }
 164
 165                 // if we haven't failed up this point, log them in.
 166
 167                 authenticate_success($record, true, true);
 168         }
 169 }
 170
 171