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($_SESSION['page_flags']);
  14         unset($_SESSION['submanage']);
  15         unset($_SESSION['my_url']);
  16         unset($_SESSION['my_address']);
  17         unset($_SESSION['addr']);
  18         unset($_SESSION['return_url']);
  19         unset($_SESSION['theme']);
  20         unset($_SESSION['page_flags']);
  21 }
  22
  23
  24 // login/logout
  25
  26
  27
  28
  29 if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
  30
  31         if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  32
  33                 // process logout request
  34                 call_hooks("logging_out");
  35                 nuke_session();
  36                 info( t('Logged out.') . EOL);
  37                 goaway(z_root());
  38         }
  39
  40         if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
  41                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  42                         intval($_SESSION['visitor_id'])
  43                 );
  44                 if(count($r)) {
  45                         $a->contact = $r[0];
  46                 }
  47         }
  48
  49         if(x($_SESSION,'uid')) {
  50
  51                 // already logged in user returning
  52
  53                 $check = get_config('system','paranoia');
  54                 // extra paranoia - if the IP changed, log them out
  55                 if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  56                         logger('Session address changed. Paranoid setting in effect, blocking session. '
  57                                 . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
  58                         nuke_session();
  59                         goaway(z_root());
  60                 }
  61
  62                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  63                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
  64                         intval($_SESSION['uid'])
  65                 );
  66
  67                 if(! count($r)) {
  68                         nuke_session();
  69                         goaway(z_root());
  70                 }
  71
  72                 authenticate_success($r[0]);
  73         }
  74 }
  75 else {
  76
  77         if(isset($_SESSION)) {
  78                 nuke_session();
  79         }
  80
  81         if((x($_POST,'password')) && strlen($_POST['password']))
  82                 $encrypted = hash('whirlpool',trim($_POST['password']));
  83         else {
  84                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
  85                    (x($_POST,'username')) && strlen($_POST['username'])) {
  86
  87                         $noid = get_config('system','no_openid');
  88
  89                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
  90
  91                         // validate_url alters the calling parameter
  92
  93                         $temp_string = $openid_url;
  94
  95                         // if it's an email address or doesn't resolve to a URL, fail.
  96
  97                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
  98                                 $a = get_app();
  99                                 notice( t('Login failed.') . EOL);
 100                                 goaway(z_root());
 101                                 // NOTREACHED
 102                         }
 103
 104                         // Otherwise it's probably an openid.
 105
 106                         try {
 107                         require_once('library/openid.php');
 108                         $openid = new LightOpenID;
 109                         $openid->identity = $openid_url;
 110                         $_SESSION['openid'] = $openid_url;
 111                         $a = get_app();
 112                         $openid->returnUrl = $a->get_baseurl(true) . '/openid';
 113                         goaway($openid->authUrl());
 114                         } catch (Exception $e) {
 115                             notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
 116                         }
 117                         // NOTREACHED
 118                 }
 119         }
 120
 121         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 122
 123                 $record = null;
 124
 125                 $addon_auth = array(
 126                         'username' => trim($_POST['username']),
 127                         'password' => trim($_POST['password']),
 128                         'authenticated' => 0,
 129                         'user_record' => null
 130                 );
 131
 132                 /**
 133                  *
 134                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 135                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 136                  * and later plugins should not interfere with an earlier one that succeeded.
 137                  *
 138                  */
 139
 140                 call_hooks('authenticate', $addon_auth);
 141
 142                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 143                         $record = $addon_auth['user_record'];
 144                 }
 145                 else {
 146
 147                         // process normal login request
 148
 149                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 150                                 FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 151                                 AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
 152                                 dbesc(trim($_POST['username'])),
 153                                 dbesc(trim($_POST['username'])),
 154                                 dbesc($encrypted)
 155                         );
 156                         if(count($r))
 157                                 $record = $r[0];
 158                 }
 159
 160                 if((! $record) || (! count($record))) {
 161                         logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 162                         notice( t('Login failed.') . EOL );
 163                         goaway(z_root());
 164                 }
 165
 166                 // if we haven't failed up this point, log them in.
 167
 168                 authenticate_success($record, true, true);
 169         }
 170 }
 171
 172 // Returns an array of group id's this contact is a member of.
 173 // This array will only contain group id's related to the uid of this
 174 // DFRN contact. They are *not* neccessarily unique across the entire site.
 175
 176
 177 if(! function_exists('init_groups_visitor')) {
 178 function init_groups_visitor($contact_id) {
 179         $groups = array();
 180         $r = q("SELECT `gid` FROM `group_member`
 181                 WHERE `contact-id` = %d ",
 182                 intval($contact_id)
 183         );
 184         if(count($r)) {
 185                 foreach($r as $rr)
 186                         $groups[] = $rr['gid'];
 187         }
 188         return $groups;
 189 }}
 190
 191