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