src/redirect.php

   1 <?php
   2
   3 /**
   4  * Prevents users from reposting their form data after a successful logout.
   5  *
   6  * Derived from webmail.php by Ralf Kraudelt <kraude@wiwi.uni-rostock.de>
   7  *
   8  * @copyright &copy; 1999-2007 The SquirrelMail Project Team
   9  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  10  * @version $Id$
  11  * @package squirrelmail
  12  */
  13 $sInitLocation = 'redirect';
  14
  15 /**
  16  * Include the SquirrelMail initialization file.
  17  */
  18 require('../include/init.php');
  19
  20 /* SquirrelMail required files. */
  21 require_once(SM_PATH . 'functions/imap_general.php');
  22 require_once(SM_PATH . 'functions/strings.php');
  23
  24 header('Pragma: no-cache');
  25 $location = get_location();
  26
  27 // session_set_cookie_params (0, $base_uri);
  28
  29 sqsession_unregister ('user_is_logged_in');
  30 sqsession_register ($base_uri, 'base_uri');
  31
  32 /* get globals we me need */
  33 sqGetGlobalVar('login_username', $login_username);
  34 sqGetGlobalVar('secretkey', $secretkey);
  35 if(!sqGetGlobalVar('squirrelmail_language', $squirrelmail_language) || $squirrelmail_language == '') {
  36     $squirrelmail_language = $squirrelmail_default_language;
  37 }
  38 if (!sqgetGlobalVar('mailtodata', $mailtodata)) {
  39     $mailtodata = '';
  40 }
  41
  42 /* end of get globals */
  43
  44 set_up_language($squirrelmail_language, true);
  45 /* Refresh the language cookie. */
  46 sqsetcookie('squirrelmail_language', $squirrelmail_language, time()+2592000,
  47           $base_uri);
  48
  49 if (!isset($login_username)) {
  50     logout_error( _("You must be logged in to access this page.") );
  51     exit;
  52 }
  53
  54 if (!sqsession_is_registered('user_is_logged_in')) {
  55     do_hook('login_before', $null);
  56
  57     $onetimepad = OneTimePadCreate(strlen($secretkey));
  58     $key = OneTimePadEncrypt($secretkey, $onetimepad);
  59
  60     /* remove redundant spaces */
  61     $login_username = trim($login_username);
  62
  63     /* Verify that username and password are correct. */
  64     if ($force_username_lowercase) {
  65         $login_username = strtolower($login_username);
  66     }
  67
  68     $imapConnection = sqimap_login($login_username, $key, $imapServerAddress, $imapPort, 0);
  69     /* From now on we are logged it. If the login failed then sqimap_login handles it */
  70
  71     /* regenerate the session id to avoid session hyijacking */
  72     sqsession_destroy();
  73     @sqsession_is_active();
  74     session_regenerate_id();
  75     /**
  76      * The cookie part. session_start and session_regenerate_session normally set
  77      * their own cookie. SquirrelMail sets another cookie which overwites the
  78      * php cookies. The sqsetcookie function sets the cookie by using the header
  79      * function which gives us full control how the cookie is set. We do that
  80      * to add the HttpOnly cookie attribute which blocks javascript access on
  81      * IE6 SP1.
  82      */
  83     sqsetcookie(session_name(),session_id(),false,$base_uri);
  84     sqsetcookie('key', $key, false, $base_uri);
  85
  86     sqsession_register($onetimepad, 'onetimepad');
  87
  88     $sqimap_capabilities = sqimap_capability($imapConnection);
  89
  90     /* Server side sorting control */
  91     if (isset($sqimap_capabilities['SORT']) && $sqimap_capabilities['SORT'] == true &&
  92         isset($disable_server_sort) && $disable_server_sort) {
  93         unset($sqimap_capabilities['SORT']);
  94     }
  95
  96     /* Thread sort control */
  97     if (isset($sqimap_capabilities['THREAD']) && $sqimap_capabilities['THREAD'] == true &&
  98         isset($disable_thread_sort) && $disable_thread_sort) {
  99         unset($sqimap_capabilities['THREAD']);
 100     }
 101
 102     sqsession_register($sqimap_capabilities, 'sqimap_capabilities');
 103     $delimiter = sqimap_get_delimiter ($imapConnection);
 104
 105     if (isset($sqimap_capabilities['NAMESPACE']) && $sqimap_capabilities['NAMESPACE'] == true) {
 106         $namespace = sqimap_get_namespace($imapConnection);
 107         sqsession_register($namespace, 'sqimap_namespace');
 108     }
 109
 110     sqimap_logout($imapConnection);
 111     sqsession_register($delimiter, 'delimiter');
 112
 113     $username = $login_username;
 114     sqsession_register ($username, 'username');
 115     do_hook('login_verified', $null);
 116 }
 117
 118 /* Set the login variables. */
 119 $user_is_logged_in = true;
 120 $just_logged_in = true;
 121
 122 /* And register with them with the session. */
 123 sqsession_register ($user_is_logged_in, 'user_is_logged_in');
 124 sqsession_register ($just_logged_in, 'just_logged_in');
 125
 126 /* parse the accepted content-types of the client */
 127 $attachment_common_types = array();
 128 $attachment_common_types_parsed = array();
 129 sqsession_register($attachment_common_types, 'attachment_common_types');
 130 sqsession_register($attachment_common_types_parsed, 'attachment_common_types_parsed');
 131
 132 if ( sqgetGlobalVar('HTTP_ACCEPT', $http_accept, SQ_SERVER) &&
 133     !isset($attachment_common_types_parsed[$http_accept]) ) {
 134     attachment_common_parse($http_accept);
 135 }
 136
 137 /* Complete autodetection of Javascript. */
 138 checkForJavascript();
 139
 140 /* Compute the URL to forward the user to. */
 141 $redirect_url = $location . '/webmail.php';
 142
 143 if ( sqgetGlobalVar('session_expired_location', $session_expired_location, SQ_SESSION) ) {
 144     sqsession_unregister('session_expired_location');
 145     if ( strpos($session_expired_location, 'compose.php') !== FALSE ) {
 146         $compose_new_win = getPref($data_dir, $username, 'compose_new_win', 0);
 147         if ($compose_new_win) {
 148             // do not prefix $location here because $session_expired_location is set to PHP_SELF
 149             // of the last page
 150             $redirect_url = $session_expired_location;
 151         } else {
 152             $redirect_url = $location.'/webmail.php?right_frame='.urlencode($session_expired_location);
 153         }
 154     }
 155     unset($session_expired_location);
 156 }
 157
 158 if($mailtodata != '') {
 159     $redirect_url  = $location . '/webmail.php?right_frame=compose.php&mailtodata=';
 160     $redirect_url .= urlencode($mailtodata);
 161 }
 162
 163 /* Write session data and send them off to the appropriate page. */
 164 session_write_close();
 165 header("Location: $redirect_url");
 166 exit;
 167
 168 /* --------------------- end main ----------------------- */
 169
 170 function attachment_common_parse($str) {
 171     global $attachment_common_types, $attachment_common_types_parsed;
 172
 173     /*
 174      * Replace ", " with "," and explode on that as Mozilla 1.x seems to
 175      * use "," to seperate whilst IE, and earlier versions of Mozilla use
 176      * ", " to seperate
 177      */
 178
 179     $str = str_replace( ', ' , ',' , $str );
 180     $types = explode(',', $str);
 181
 182     foreach ($types as $val) {
 183         // Ignore the ";q=1.0" stuff
 184         if (strpos($val, ';') !== false)
 185             $val = substr($val, 0, strpos($val, ';'));
 186
 187         if (! isset($attachment_common_types[$val])) {
 188             $attachment_common_types[$val] = true;
 189         }
 190     }
 191     sqsession_register($attachment_common_types, 'attachment_common_types');
 192
 193     /* mark as parsed */
 194     $attachment_common_types_parsed[$str] = true;
 195 }