include/auth.php

   1 <?php
   2
   3
   4 require_once('include/security.php');
   5 require_once('include/datetime.php');
   6
   7 function nuke_session() {
   8         unset($_SESSION['authenticated']);
   9         unset($_SESSION['uid']);
  10         unset($_SESSION['visitor_id']);
  11         unset($_SESSION['administrator']);
  12         unset($_SESSION['cid']);
  13         unset($_SESSION['theme']);
  14         unset($_SESSION['mobile-theme']);
  15         unset($_SESSION['page_flags']);
  16         unset($_SESSION['submanage']);
  17         unset($_SESSION['my_url']);
  18         unset($_SESSION['my_address']);
  19         unset($_SESSION['addr']);
  20         unset($_SESSION['return_url']);
  21 }
  22
  23
  24 // login/logout
  25
  26
  27
  28
  29 if((isset($_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                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  63                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
  64                         intval($_SESSION['uid'])
  65                 );
  66
  67                 if(! count($r)) {
  68                         nuke_session();
  69                         goaway(z_root());
  70                 }
  71
  72                 // Make sure to refresh the last login time for the user if the user
  73                 // stays logged in for a long time, e.g. with "Remember Me"
  74                 $login_refresh = false;
  75                 if(! x($_SESSION['last_login_date'])) {
  76                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  77                 }
  78                 if( strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
  79
  80                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  81                         $login_refresh = true;
  82                 }
  83                 authenticate_success($r[0], false, false, $login_refresh);
  84         }
  85 }
  86 else {
  87
  88         if(isset($_SESSION)) {
  89                 nuke_session();
  90         }
  91
  92         if((x($_POST,'password')) && strlen($_POST['password']))
  93                 $encrypted = hash('whirlpool',trim($_POST['password']));
  94         else {
  95                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
  96                    (x($_POST,'username')) && strlen($_POST['username'])) {
  97
  98                         $noid = get_config('system','no_openid');
  99
 100                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
 101
 102                         // validate_url alters the calling parameter
 103
 104                         $temp_string = $openid_url;
 105
 106                         // if it's an email address or doesn't resolve to a URL, fail.
 107
 108                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
 109                                 $a = get_app();
 110                                 notice( t('Login failed.') . EOL);
 111                                 goaway(z_root());
 112                                 // NOTREACHED
 113                         }
 114
 115                         // Otherwise it's probably an openid.
 116
 117                         try {
 118                         require_once('library/openid.php');
 119                         $openid = new LightOpenID;
 120                         $openid->identity = $openid_url;
 121                         $_SESSION['openid'] = $openid_url;
 122                         $a = get_app();
 123                         $openid->returnUrl = $a->get_baseurl(true) . '/openid';
 124                         goaway($openid->authUrl());
 125                         } catch (Exception $e) {
 126                             notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
 127                         }
 128                         // NOTREACHED
 129                 }
 130         }
 131
 132         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 133
 134                 $record = null;
 135
 136                 $addon_auth = array(
 137                         'username' => trim($_POST['username']),
 138                         'password' => trim($_POST['password']),
 139                         'authenticated' => 0,
 140                         'user_record' => null
 141                 );
 142
 143                 /**
 144                  *
 145                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 146                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 147                  * and later plugins should not interfere with an earlier one that succeeded.
 148                  *
 149                  */
 150
 151                 call_hooks('authenticate', $addon_auth);
 152
 153                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 154                         $record = $addon_auth['user_record'];
 155                 }
 156                 else {
 157
 158                         // process normal login request
 159
 160                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 161                                 FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 162                                 AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
 163                                 dbesc(trim($_POST['username'])),
 164                                 dbesc(trim($_POST['username'])),
 165                                 dbesc($encrypted)
 166                         );
 167                         if(count($r))
 168                                 $record = $r[0];
 169                 }
 170
 171                 if((! $record) || (! count($record))) {
 172                         logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 173                         notice( t('Login failed.') . EOL );
 174                         goaway(z_root());
 175                 }
 176
 177                 // If the user specified to remember the authentication, then change the cookie
 178                 // to expire after one year (the default is when the browser is closed).
 179                 // If the user did not specify to remember, change the cookie to expire when the
 180                 // browser is closed. The reason this is necessary is because if the user
 181                 // specifies to remember, then logs out and logs back in without specifying to
 182                 // remember, the old "remember" cookie may remain and prevent the session from
 183                 // expiring when the browser is closed.
 184                 //
 185                 // It seems like I should be able to test for the old cookie, but for some reason when
 186                 // I read the lifetime value from session_get_cookie_params(), I always get '0'
 187                 // (i.e. expire when the browser is closed), even when there's a time expiration
 188                 // on the cookie
 189                 if($_POST['remember']) {
 190                         $old_sid = session_id();
 191                         session_set_cookie_params('31449600'); // one year
 192                         session_regenerate_id(false);
 193
 194                         q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
 195                 }
 196                 else {
 197                         $old_sid = session_id();
 198                         session_set_cookie_params('0');
 199                         session_regenerate_id(false);
 200
 201                         q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
 202                 }
 203
 204                 // if we haven't failed up this point, log them in.
 205
 206                 $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
 207                 authenticate_success($record, true, true);
 208         }
 209 }
 210
 211