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         session_unset();
   9 /*
  10         new_cookie(0); // make sure cookie is deleted on browser close, as a security measure
  11
  12         unset($_SESSION['authenticated']);
  13         unset($_SESSION['uid']);
  14         unset($_SESSION['visitor_id']);
  15         unset($_SESSION['administrator']);
  16         unset($_SESSION['cid']);
  17         unset($_SESSION['theme']);
  18         unset($_SESSION['mobile-theme']);
  19         unset($_SESSION['page_flags']);
  20         unset($_SESSION['submanage']);
  21         unset($_SESSION['my_url']);
  22         unset($_SESSION['my_address']);
  23         unset($_SESSION['addr']);
  24         unset($_SESSION['return_url']);
  25 */
  26 }
  27
  28
  29 // login/logout
  30
  31
  32
  33
  34 if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
  35
  36         if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  37
  38                 // process logout request
  39                 call_hooks("logging_out");
  40                 nuke_session();
  41                 info( t('Logged out.') . EOL);
  42                 goaway(z_root());
  43         }
  44
  45         if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
  46                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  47                         intval($_SESSION['visitor_id'])
  48                 );
  49                 if(count($r)) {
  50                         $a->contact = $r[0];
  51                 }
  52         }
  53
  54         if(x($_SESSION,'uid')) {
  55
  56                 // already logged in user returning
  57
  58                 $check = get_config('system','paranoia');
  59                 // extra paranoia - if the IP changed, log them out
  60                 if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  61                         logger('Session address changed. Paranoid setting in effect, blocking session. '
  62                                 . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
  63                         nuke_session();
  64                         goaway(z_root());
  65                 }
  66
  67                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  68                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
  69                         intval($_SESSION['uid'])
  70                 );
  71
  72                 if(! count($r)) {
  73                         nuke_session();
  74                         goaway(z_root());
  75                 }
  76
  77                 // Make sure to refresh the last login time for the user if the user
  78                 // stays logged in for a long time, e.g. with "Remember Me"
  79                 $login_refresh = false;
  80                 if(! x($_SESSION['last_login_date'])) {
  81                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  82                 }
  83                 if( strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
  84
  85                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  86                         $login_refresh = true;
  87                 }
  88                 authenticate_success($r[0], false, false, $login_refresh);
  89         }
  90 }
  91 else {
  92
  93         if(isset($_SESSION)) {
  94                 nuke_session();
  95         }
  96
  97         if((x($_POST,'password')) && strlen($_POST['password']))
  98                 $encrypted = hash('whirlpool',trim($_POST['password']));
  99         else {
 100                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
 101                    (x($_POST,'username')) && strlen($_POST['username'])) {
 102
 103                         $noid = get_config('system','no_openid');
 104
 105                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
 106
 107                         // validate_url alters the calling parameter
 108
 109                         $temp_string = $openid_url;
 110
 111                         // if it's an email address or doesn't resolve to a URL, fail.
 112
 113                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
 114                                 $a = get_app();
 115                                 notice( t('Login failed.') . EOL);
 116                                 goaway(z_root());
 117                                 // NOTREACHED
 118                         }
 119
 120                         // Otherwise it's probably an openid.
 121
 122                         try {
 123                         require_once('library/openid.php');
 124                         $openid = new LightOpenID;
 125                         $openid->identity = $openid_url;
 126                         $_SESSION['openid'] = $openid_url;
 127                         $a = get_app();
 128                         $openid->returnUrl = $a->get_baseurl(true) . '/openid';
 129                         goaway($openid->authUrl());
 130                         } catch (Exception $e) {
 131                             notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
 132                         }
 133                         // NOTREACHED
 134                 }
 135         }
 136
 137         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 138
 139                 $record = null;
 140
 141                 $addon_auth = array(
 142                         'username' => trim($_POST['username']),
 143                         'password' => trim($_POST['password']),
 144                         'authenticated' => 0,
 145                         'user_record' => null
 146                 );
 147
 148                 /**
 149                  *
 150                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 151                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 152                  * and later plugins should not interfere with an earlier one that succeeded.
 153                  *
 154                  */
 155
 156                 call_hooks('authenticate', $addon_auth);
 157
 158                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 159                         $record = $addon_auth['user_record'];
 160                 }
 161                 else {
 162
 163                         // process normal login request
 164
 165                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 166                                 FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 167                                 AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
 168                                 dbesc(trim($_POST['username'])),
 169                                 dbesc(trim($_POST['username'])),
 170                                 dbesc($encrypted)
 171                         );
 172                         if(count($r))
 173                                 $record = $r[0];
 174                 }
 175
 176                 if((! $record) || (! count($record))) {
 177                         logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 178                         notice( t('Login failed.') . EOL );
 179                         goaway(z_root());
 180                 }
 181
 182                 // If the user specified to remember the authentication, then change the cookie
 183                 // to expire after one year (the default is when the browser is closed).
 184                 // If the user did not specify to remember, change the cookie to expire when the
 185                 // browser is closed. The reason this is necessary is because if the user
 186                 // specifies to remember, then logs out and logs back in without specifying to
 187                 // remember, the old "remember" cookie may remain and prevent the session from
 188                 // expiring when the browser is closed.
 189                 //
 190                 // It seems like I should be able to test for the old cookie, but for some reason when
 191                 // I read the lifetime value from session_get_cookie_params(), I always get '0'
 192                 // (i.e. expire when the browser is closed), even when there's a time expiration
 193                 // on the cookie
 194                 if($_POST['remember']) {
 195                         new_cookie(31449600); // one year
 196                 }
 197                 else {
 198                         new_cookie(0); // 0 means delete on browser exit
 199                 }
 200
 201                 // if we haven't failed up this point, log them in.
 202
 203                 $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
 204                 authenticate_success($record, true, true);
 205         }
 206 }
 207
 208 function new_cookie($time) {
 209         $a = get_app();
 210
 211         $old_sid = session_id();
 212         session_set_cookie_params($time);
 213         //session_set_cookie_params($time, "/", $a->get_hostname());
 214         session_regenerate_id(false);
 215
 216         q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
 217
 218         logger("Session parameter lifetime: ".$time." - got: ".print_r(session_get_cookie_params(), true), LOGGER_DEBUG);
 219 }