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'] = $a->user['page-flags'];
  56                 if(strlen($a->user['timezone']))
  57                         date_default_timezone_set($a->user['timezone']);
  58
  59                 $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
  60
  61                 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
  62                         intval($_SESSION['uid']));
  63                 if(count($r)) {
  64                         $a->contact = $r[0];
  65                         $a->cid = $r[0]['id'];
  66                         $_SESSION['cid'] = $a->cid;
  67
  68                 }
  69                 header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
  70         }
  71 }
  72 else {
  73
  74         if(isset($_SESSION)) {
  75                 nuke_session();
  76         }
  77
  78         if((x($_POST,'password')) && strlen($_POST['password']))
  79                 $encrypted = hash('whirlpool',trim($_POST['password']));
  80         else {
  81                 if((x($_POST,'openid_url')) && strlen($_POST['openid_url'])) {
  82
  83                         $noid = get_config('system','no_openid');
  84
  85                         $openid_url = trim($_POST['openid_url']);
  86
  87                         // validate_url alters the calling parameter
  88
  89                         $temp_string = $openid_url;
  90
  91                         // if it's an email address or doesn't resolve to a URL, fail.
  92
  93                         if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
  94                                 $a = get_app();
  95                                 notice( t('Login failed.') . EOL);
  96                                 goaway($a->get_baseurl());
  97                                 // NOTREACHED
  98                         }
  99
 100                         // Otherwise it's probably an openid.
 101
 102                         require_once('library/openid.php');
 103                         $openid = new LightOpenID;
 104                         $openid->identity = $openid_url;
 105                         $_SESSION['openid'] = $openid_url;
 106                         $a = get_app();
 107                         $openid->returnUrl = $a->get_baseurl() . '/openid';
 108
 109                         $r = q("SELECT `uid` FROM `user` WHERE `openid` = '%s' LIMIT 1",
 110                                 dbesc($openid_url)
 111                         );
 112                         if(count($r)) {
 113                                 // existing account
 114                                 goaway($openid->authUrl());
 115                                 // NOTREACHED
 116                         }
 117                         else {
 118                                 if($a->config['register_policy'] == REGISTER_CLOSED) {
 119                                         $a = get_app();
 120                                         notice( t('Login failed.') . EOL);
 121                                         goaway($a->get_baseurl());
 122                                         // NOTREACHED
 123                                 }
 124                                 // new account
 125                                 $_SESSION['register'] = 1;
 126                                 $openid->required = array('namePerson/friendly', 'contact/email', 'namePerson');
 127                                 $openid->optional = array('namePerson/first','media/image/aspect11','media/image/default');
 128                                 goaway($openid->authUrl());
 129                                 // NOTREACHED
 130                         }
 131                 }
 132         }
 133         if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
 134
 135
 136                 $addon_auth = array(
 137                         'name' => trim($_POST['openid_url']),
 138                         'password' => trim($_POST['password']),
 139                         'authenticated' => 0
 140                 );
 141
 142                 /**
 143                  *
 144                  * A plugin indicates successful login by setting 'authenticated' to non-zero value
 145                  * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
 146                  * and later plugins should not interfere with an earlier one that succeeded.
 147                  *
 148                  */
 149
 150                 call_hooks('authenticate', $addon_auth);
 151
 152                 if(! $addon_auth['authenticated']) {
 153                         // process login request
 154
 155                         $r = q("SELECT * FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
 156                                 AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
 157                                 dbesc(trim($_POST['openid_url'])),
 158                                 dbesc(trim($_POST['openid_url'])),
 159                                 dbesc($encrypted)
 160                         );
 161                         if(($r === false) || (! count($r))) {
 162                                 notice( t('Login failed.') . EOL );
 163                                 goaway($a->get_baseurl());
 164                         }
 165                 }
 166
 167                 $_SESSION['uid'] = $r[0]['uid'];
 168                 $_SESSION['theme'] = $r[0]['theme'];
 169                 $_SESSION['authenticated'] = 1;
 170                 $_SESSION['page_flags'] = $r[0]['page-flags'];
 171                 $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
 172                 $_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
 173
 174                 notice( t("Welcome back ") . $r[0]['username'] . EOL);
 175                 $a->user = $r[0];
 176                 if(strlen($a->user['timezone']))
 177                         date_default_timezone_set($a->user['timezone']);
 178
 179                 $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
 180                         intval($_SESSION['uid']));
 181                 if(count($r)) {
 182                         $a->contact = $r[0];
 183                         $a->cid = $r[0]['id'];
 184                         $_SESSION['cid'] = $a->cid;
 185                 }
 186                 q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d LIMIT 1",
 187                         dbesc(datetime_convert()),
 188                         intval($_SESSION['uid'])
 189                 );
 190
 191                 call_hooks('logged_in', $a->user);
 192
 193                 header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
 194                 if(($a->module !== 'home') && isset($_SESSION['return_url']))
 195                         goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
 196         }
 197 }
 198
 199 // Returns an array of group id's this contact is a member of.
 200 // This array will only contain group id's related to the uid of this
 201 // DFRN contact. They are *not* neccessarily unique across the entire site.
 202
 203
 204 if(! function_exists('init_groups_visitor')) {
 205 function init_groups_visitor($contact_id) {
 206         $groups = array();
 207         $r = q("SELECT `gid` FROM `group_member`
 208                 WHERE `contact-id` = %d ",
 209                 intval($contact_id)
 210         );
 211         if(count($r)) {
 212                 foreach($r as $rr)
 213                         $groups[] = $rr['gid'];
 214         }
 215         return $groups;
 216 }}
 217
 218