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
   9         new_cookie(0); // make sure cookie is deleted on browser close, as a security measure
  10         session_unset();
  11 }
  12
  13 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
  14 if(isset($_COOKIE["Friendica"])) {
  15         $data = json_decode($_COOKIE["Friendica"]);
  16
  17         if (isset($data->uid)) {
  18                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  19                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
  20                         intval($data->uid)
  21                 );
  22
  23                 if ($r) {
  24                         // Renew the cookie
  25                         new_cookie(604800, json_encode(array("uid" => $r[0]["uid"], "ip" => $_SERVER['REMOTE_ADDR'])));
  26
  27                         // Do the authentification if not done by now
  28                         if(!isset($_SESSION) OR !isset($_SESSION['authenticated'])) {
  29                                 authenticate_success($r[0], false, false, false);
  30
  31                         if (get_config('system','paranoia'))
  32                                 $_SESSION['addr'] = $data->ip;
  33                         }
  34                 }
  35         }
  36 }
  37
  38 // login/logout
  39
  40 if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
  41
  42         if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  43
  44                 // process logout request
  45                 call_hooks("logging_out");
  46                 nuke_session();
  47                 new_cookie(-1);
  48                 info( t('Logged out.') . EOL);
  49                 goaway(z_root());
  50         }
  51
  52         if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
  53                 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
  54                         intval($_SESSION['visitor_id'])
  55                 );
  56                 if(count($r)) {
  57                         $a->contact = $r[0];
  58                 }
  59         }
  60
  61         if(x($_SESSION,'uid')) {
  62
  63                 // already logged in user returning
  64
  65                 $check = get_config('system','paranoia');
  66                 // extra paranoia - if the IP changed, log them out
  67                 if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  68                         logger('Session address changed. Paranoid setting in effect, blocking session. '
  69                                 . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
  70                         nuke_session();
  71                         goaway(z_root());
  72                 }
  73
  74                 $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
  75                 FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
  76                         intval($_SESSION['uid'])
  77                 );
  78
  79                 if(! count($r)) {
  80                         nuke_session();
  81                         goaway(z_root());
  82                 }
  83
  84                 // Make sure to refresh the last login time for the user if the user
  85                 // stays logged in for a long time, e.g. with "Remember Me"
  86                 $login_refresh = false;
  87                 if(! x($_SESSION['last_login_date'])) {
  88                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  89                 }
  90                 if( strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
  91
  92                         $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
  93                         $login_refresh = true;
  94                 }
  95                 authenticate_success($r[0], false, false, $login_refresh);
  96         }
  97 } else {
  98
  99         if(isset($_SESSION)) {
 100                 nuke_session();
 101         }
 102
 103         if((x($_POST,'password')) && strlen($_POST['password']))
 104                 $encrypted = hash('whirlpool',trim($_POST['password']));
 105         else {
 106                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
 107                    (x($_POST,'username')) && strlen($_POST['username'])) {
 108
 109                         $noid = get_config('system','no_openid');
 110
 111                         $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
 112
 113                         // validate_url alters the calling parameter
 114
 115                         $temp_string = $openid_url;
 116
 117                         // if it's an email address or doesn't resolve to a URL, fail.
 118
 119                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
 120                                 $a = get_app();
 121                                 notice( t('Login failed.') . EOL);
 122                                 goaway(z_root());
 123                                 // NOTREACHED
 124                         }
 125
 126                         // Otherwise it's probably an openid.
 127
 128                         try {
 129                         require_once('library/openid.php');
 130                         $openid = new LightOpenID;
 131                         $openid->identity = $openid_url;
 132                         $_SESSION['openid'] = $openid_url;
 133                         $a = get_app();
 134                         $openid->returnUrl = $a->get_baseurl(true) . '/openid';
 135                         goaway($openid->authUrl());
 136                         } catch (Exception $e) {
 137                             notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
 138                         }
 139                         // NOTREACHED
 140                 }
 141         }
 142
 143         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 144
 145                 $record = null;
 146
 147                 $addon_auth = array(
 148                         'username' => trim($_POST['username']),
 149                         'password' => trim($_POST['password']),
 150                         'authenticated' => 0,
 151                         'user_record' => null
 152                 );
 153
 154                 /**
 155                  *
 156                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 157                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 158                  * and later plugins should not interfere with an earlier one that succeeded.
 159                  *
 160                  */
 161
 162                 call_hooks('authenticate', $addon_auth);
 163
 164                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 165                         $record = $addon_auth['user_record'];
 166                 }
 167                 else {
 168
 169                         // process normal login request
 170
 171                         $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
 172                                 FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 173                                 AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
 174                                 dbesc(trim($_POST['username'])),
 175                                 dbesc(trim($_POST['username'])),
 176                                 dbesc($encrypted)
 177                         );
 178                         if(count($r))
 179                                 $record = $r[0];
 180                 }
 181
 182                 if (!$record || !count($record)) {
 183                         logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
 184                         notice( t('Login failed.') . EOL );
 185                         goaway(z_root());
 186                 }
 187
 188                 // If the user specified to remember the authentication, then set a cookie
 189                 // that expires after one week (the default is when the browser is closed).
 190                 // The cookie will be renewed automatically.
 191                 // The week ensures that sessions will expire after some inactivity.
 192                 if($_POST['remember'])
 193                         new_cookie(604800, json_encode(array("uid" => $r[0]["uid"], "ip" => $_SERVER['REMOTE_ADDR'])));
 194                 else
 195                         new_cookie(0); // 0 means delete on browser exit
 196
 197                 // if we haven't failed up this point, log them in.
 198
 199                 $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
 200                 authenticate_success($record, true, true);
 201         }
 202 }
 203
 204 function new_cookie($time, $value = "") {
 205
 206         if ($time != 0)
 207                 $time = $time + time();
 208
 209         setcookie("Friendica", $value, $time);
 210
 211         return;
 212 }