include/auth.php

   1 <?php
   2
   3
   4 function nuke_session() {
   5         unset($_SESSION['authenticated']);
   6         unset($_SESSION['uid']);
   7         unset($_SESSION['visitor_id']);
   8         unset($_SESSION['administrator']);
   9         unset($_SESSION['cid']);
  10         unset($_SESSION['theme']);
  11         unset($_SESSION['page_flags']);
  12 }
  13
  14
  15 // login/logout
  16
  17
  18
  19
  20 if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
  21
  22         if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
  23
  24                 // process logout request
  25
  26                 nuke_session();
  27                 notice( t('Logged out.') . EOL);
  28                 goaway($a->get_baseurl());
  29         }
  30
  31         if(x($_SESSION,'uid')) {
  32
  33                 // already logged in user returning
  34
  35                 $check = get_config('system','paranoia');
  36                 // extra paranoia - if the IP changed, log them out
  37                 if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
  38                         nuke_session();
  39                         goaway($a->get_baseurl());
  40                 }
  41
  42                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
  43                         intval($_SESSION['uid'])
  44                 );
  45
  46                 if(! count($r)) {
  47                         nuke_session();
  48                         goaway($a->get_baseurl());
  49                 }
  50
  51                 // initialise user environment
  52
  53                 $a->user = $r[0];
  54                 $_SESSION['theme'] = $a->user['theme'];
  55                 $_SESSION['page_flags'] = $a->user['page-flags'];
  56
  57                 if(strlen($a->user['timezone'])) {
  58                         date_default_timezone_set($a->user['timezone']);
  59                         $a->timezone = $a->user['timezone'];
  60                 }
  61
  62                 $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
  63
  64                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
  65                         intval($_SESSION['uid']));
  66                 if(count($r)) {
  67                         $a->contact = $r[0];
  68                         $a->cid = $r[0]['id'];
  69                         $_SESSION['cid'] = $a->cid;
  70
  71                 }
  72                 header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
  73         }
  74 }
  75 else {
  76
  77         if(isset($_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
  86                         $noid = get_config('system','no_openid');
  87
  88                         $openid_url = trim($_POST['openid_url']);
  89
  90                         // validate_url alters the calling parameter
  91
  92                         $temp_string = $openid_url;
  93
  94                         // if it's an email address or doesn't resolve to a URL, fail.
  95
  96                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
  97                                 $a = get_app();
  98                                 notice( t('Login failed.') . EOL);
  99                                 goaway($a->get_baseurl());
 100                                 // NOTREACHED
 101                         }
 102
 103                         // Otherwise it's probably an openid.
 104
 105                         require_once('library/openid.php');
 106                         $openid = new LightOpenID;
 107                         $openid->identity = $openid_url;
 108                         $_SESSION['openid'] = $openid_url;
 109                         $a = get_app();
 110                         $openid->returnUrl = $a->get_baseurl() . '/openid';
 111
 112                         $r = q("SELECT `uid` FROM `user` WHERE `openid` = '%s' LIMIT 1",
 113                                 dbesc($openid_url)
 114                         );
 115                         if(count($r)) {
 116                                 // existing account
 117                                 goaway($openid->authUrl());
 118                                 // NOTREACHED
 119                         }
 120                         else {
 121                                 if($a->config['register_policy'] == REGISTER_CLOSED) {
 122                                         $a = get_app();
 123                                         notice( t('Login failed.') . EOL);
 124                                         goaway($a->get_baseurl());
 125                                         // NOTREACHED
 126                                 }
 127                                 // new account
 128                                 $_SESSION['register'] = 1;
 129                                 $openid->required = array('namePerson/friendly', 'contact/email', 'namePerson');
 130                                 $openid->optional = array('namePerson/first','media/image/aspect11','media/image/default');
 131                                 goaway($openid->authUrl());
 132                                 // NOTREACHED
 133                         }
 134                 }
 135         }
 136         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 137
 138                 $record = null;
 139
 140                 $addon_auth = array(
 141                         'username' => trim($_POST['openid_url']),
 142                         'password' => trim($_POST['password']),
 143                         'authenticated' => 0,
 144                         'user_record' => null
 145                 );
 146
 147                 /**
 148                  *
 149                  * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
 150                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 151                  * and later plugins should not interfere with an earlier one that succeeded.
 152                  *
 153                  */
 154
 155                 call_hooks('authenticate', $addon_auth);
 156
 157                 if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
 158                         $record = $addon_auth['user_record'];
 159                 }
 160                 else {
 161
 162                         // process normal login request
 163
 164                         $r = q("SELECT * FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 165                                 AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
 166                                 dbesc(trim($_POST['openid_url'])),
 167                                 dbesc(trim($_POST['openid_url'])),
 168                                 dbesc($encrypted)
 169                         );
 170                         if(count($r))
 171                                 $record = $r[0];
 172                 }
 173
 174                 if((! $record) || (! count($record))) {
 175                         logger('authenticate: failed login attempt: ' . trim($_POST['openid_url']));
 176                         notice( t('Login failed.') . EOL );
 177                         goaway($a->get_baseurl());
 178                 }
 179
 180                 $_SESSION['uid'] = $record['uid'];
 181                 $_SESSION['theme'] = $record['theme'];
 182                 $_SESSION['authenticated'] = 1;
 183                 $_SESSION['page_flags'] = $record['page-flags'];
 184                 $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $record['nickname'];
 185                 $_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
 186
 187                 notice( t("Welcome back ") . $record['username'] . EOL);
 188                 $a->user = $record;
 189
 190                 if(strlen($a->user['timezone'])) {
 191                         date_default_timezone_set($a->user['timezone']);
 192                         $a->timezone = $a->user['timezone'];
 193                 }
 194
 195                 $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
 196                         intval($_SESSION['uid']));
 197                 if(count($r)) {
 198                         $a->contact = $r[0];
 199                         $a->cid = $r[0]['id'];
 200                         $_SESSION['cid'] = $a->cid;
 201                 }
 202                 q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d LIMIT 1",
 203                         dbesc(datetime_convert()),
 204                         intval($_SESSION['uid'])
 205                 );
 206
 207                 call_hooks('logged_in', $a->user);
 208
 209                 header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
 210                 if(($a->module !== 'home') && isset($_SESSION['return_url']))
 211                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
 212         }
 213 }
 214
 215 // Returns an array of group id's this contact is a member of.
 216 // This array will only contain group id's related to the uid of this
 217 // DFRN contact. They are *not* neccessarily unique across the entire site.
 218
 219
 220 if(! function_exists('init_groups_visitor')) {
 221 function init_groups_visitor($contact_id) {
 222         $groups = array();
 223         $r = q("SELECT `gid` FROM `group_member`
 224                 WHERE `contact-id` = %d ",
 225                 intval($contact_id)
 226         );
 227         if(count($r)) {
 228                 foreach($r as $rr)
 229                         $groups[] = $rr['gid'];
 230         }
 231         return $groups;
 232 }}
 233
 234