| 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 © 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 | |
| 14 | /** This is the redirect page */ |
| 15 | define('PAGE_NAME', 'redirect'); |
| 16 | |
| 17 | /** |
| 18 | * Include the SquirrelMail initialization file. |
| 19 | */ |
| 20 | require('../include/init.php'); |
| 21 | |
| 22 | /* SquirrelMail required files. */ |
| 23 | require_once(SM_PATH . 'functions/imap_general.php'); |
| 24 | require_once(SM_PATH . 'functions/strings.php'); |
| 25 | |
| 26 | header('Pragma: no-cache'); |
| 27 | $location = get_location(); |
| 28 | |
| 29 | // session_set_cookie_params (0, $base_uri); |
| 30 | |
| 31 | sqsession_unregister ('user_is_logged_in'); |
| 32 | sqsession_register ($base_uri, 'base_uri'); |
| 33 | |
| 34 | /* get globals we me need */ |
| 35 | sqGetGlobalVar('login_username', $login_username); |
| 36 | sqGetGlobalVar('secretkey', $secretkey); |
| 37 | if(!sqGetGlobalVar('squirrelmail_language', $squirrelmail_language) || $squirrelmail_language == '') { |
| 38 | $squirrelmail_language = $squirrelmail_default_language; |
| 39 | } |
| 40 | if (!sqgetGlobalVar('mailtodata', $mailtodata)) { |
| 41 | $mailtodata = ''; |
| 42 | } |
| 43 | |
| 44 | /* end of get globals */ |
| 45 | |
| 46 | set_up_language($squirrelmail_language, true); |
| 47 | /* Refresh the language cookie. */ |
| 48 | sqsetcookie('squirrelmail_language', $squirrelmail_language, time()+2592000, |
| 49 | $base_uri); |
| 50 | |
| 51 | if (!isset($login_username)) { |
| 52 | logout_error( _("You must be logged in to access this page.") ); |
| 53 | exit; |
| 54 | } |
| 55 | |
| 56 | do_hook('login_before', $null); |
| 57 | |
| 58 | $onetimepad = OneTimePadCreate(strlen($secretkey)); |
| 59 | $key = OneTimePadEncrypt($secretkey, $onetimepad); |
| 60 | |
| 61 | /* remove redundant spaces */ |
| 62 | $login_username = trim($login_username); |
| 63 | |
| 64 | /* Case-normalise username if so desired */ |
| 65 | if ($force_username_lowercase) { |
| 66 | $login_username = strtolower($login_username); |
| 67 | } |
| 68 | |
| 69 | /* Verify that username and password are correct. */ |
| 70 | $imapConnection = sqimap_login($login_username, $key, $imapServerAddress, $imapPort, 0); |
| 71 | /* From now on we are logged it. If the login failed then sqimap_login handles it */ |
| 72 | |
| 73 | /* regenerate the session id to avoid session hyijacking */ |
| 74 | //FIXME! IMPORTANT! SOMEONE PLEASE EXPLAIN THE SECURITY CONCERN HERE; THIS session_destroy() BORKS ANY SESSION INFORMATION ADDED ON THE LOGIN PAGE (SPECIFICALLY THE SESSION RESTORE DATA, BUT ALSO ANYTHING ADDED BY PLUGINS, ETC)... I HAVE DISABLED THIS (AND NOTE THAT THE LOGIN PAGE ALREADY EXECUTES A session_destroy() (see includes/init.php)), SO PLEASE, WHOEVER ADDED THIS, PLEASE ANALYSE THIS SITUATION AND COMMENT ON IF IT IS OK LIKE THIS!! WHAT HIJACKING ISSUES ARE WE SUPPOSED TO BE PREVENTING HERE? |
| 75 | //sqsession_destroy(); |
| 76 | //@sqsession_is_active(); |
| 77 | //session_regenerate_id(); |
| 78 | /** |
| 79 | * The cookie part. session_start and session_regenerate_session normally set |
| 80 | * their own cookie. SquirrelMail sets another cookie which overwites the |
| 81 | * php cookies. The sqsetcookie function sets the cookie by using the header |
| 82 | * function which gives us full control how the cookie is set. We do that |
| 83 | * to add the HttpOnly cookie attribute which blocks javascript access on |
| 84 | * IE6 SP1. |
| 85 | */ |
| 86 | sqsetcookie(session_name(),session_id(),false,$base_uri); |
| 87 | sqsetcookie('key', $key, false, $base_uri); |
| 88 | |
| 89 | sqsession_register($onetimepad, 'onetimepad'); |
| 90 | |
| 91 | $sqimap_capabilities = sqimap_capability($imapConnection); |
| 92 | |
| 93 | /* Server side sorting control */ |
| 94 | if (isset($sqimap_capabilities['SORT']) && $sqimap_capabilities['SORT'] == true && |
| 95 | isset($disable_server_sort) && $disable_server_sort) { |
| 96 | unset($sqimap_capabilities['SORT']); |
| 97 | } |
| 98 | |
| 99 | /* Thread sort control */ |
| 100 | if (isset($sqimap_capabilities['THREAD']) && $sqimap_capabilities['THREAD'] == true && |
| 101 | isset($disable_thread_sort) && $disable_thread_sort) { |
| 102 | unset($sqimap_capabilities['THREAD']); |
| 103 | } |
| 104 | |
| 105 | sqsession_register($sqimap_capabilities, 'sqimap_capabilities'); |
| 106 | $delimiter = sqimap_get_delimiter ($imapConnection); |
| 107 | |
| 108 | if (isset($sqimap_capabilities['NAMESPACE']) && $sqimap_capabilities['NAMESPACE'] == true) { |
| 109 | $namespace = sqimap_get_namespace($imapConnection); |
| 110 | sqsession_register($namespace, 'sqimap_namespace'); |
| 111 | } |
| 112 | |
| 113 | sqimap_logout($imapConnection); |
| 114 | sqsession_register($delimiter, 'delimiter'); |
| 115 | |
| 116 | $username = $login_username; |
| 117 | sqsession_register ($username, 'username'); |
| 118 | do_hook('login_verified', $null); |
| 119 | |
| 120 | /* Set the login variables. */ |
| 121 | $user_is_logged_in = true; |
| 122 | $just_logged_in = true; |
| 123 | |
| 124 | /* And register with them with the session. */ |
| 125 | sqsession_register ($user_is_logged_in, 'user_is_logged_in'); |
| 126 | sqsession_register ($just_logged_in, 'just_logged_in'); |
| 127 | |
| 128 | /* parse the accepted content-types of the client */ |
| 129 | $attachment_common_types = array(); |
| 130 | $attachment_common_types_parsed = array(); |
| 131 | sqsession_register($attachment_common_types, 'attachment_common_types'); |
| 132 | sqsession_register($attachment_common_types_parsed, 'attachment_common_types_parsed'); |
| 133 | |
| 134 | if ( sqgetGlobalVar('HTTP_ACCEPT', $http_accept, SQ_SERVER) && |
| 135 | !isset($attachment_common_types_parsed[$http_accept]) ) { |
| 136 | attachment_common_parse($http_accept); |
| 137 | } |
| 138 | |
| 139 | // having just logged in, need to synch the template file cache |
| 140 | // so the right template set is displayed (per user prefs) |
| 141 | require(SM_PATH . 'include/load_prefs.php'); |
| 142 | Template::cache_template_file_hierarchy(TRUE); |
| 143 | |
| 144 | /* Complete autodetection of Javascript. */ |
| 145 | checkForJavascript(); |
| 146 | |
| 147 | /* Compute the URL to forward the user to. */ |
| 148 | $redirect_url = $location . '/webmail.php'; |
| 149 | |
| 150 | if ( sqgetGlobalVar('session_expired_location', $session_expired_location, SQ_SESSION) ) { |
| 151 | sqsession_unregister('session_expired_location'); |
| 152 | if ( $session_expired_location == 'compose' ) { |
| 153 | $compose_new_win = getPref($data_dir, $username, 'compose_new_win', 0); |
| 154 | if ($compose_new_win) { |
| 155 | // do not prefix $location here because $session_expired_location is set to the PAGE_NAME |
| 156 | // of the last page |
| 157 | $redirect_url = $location . '/' . $session_expired_location . '.php'; |
| 158 | } else { |
| 159 | $redirect_url = $location . '/webmail.php?right_frame=' . urlencode($session_expired_location . '.php'); |
| 160 | } |
| 161 | } else if ($session_expired_location != 'webmail' |
| 162 | && $session_expired_location != 'left_main') { |
| 163 | $redirect_url = $location . '/webmail.php?right_frame=' . urlencode($session_expired_location . '.php'); |
| 164 | } |
| 165 | unset($session_expired_location); |
| 166 | } |
| 167 | |
| 168 | if($mailtodata != '') { |
| 169 | $redirect_url = $location . '/webmail.php?right_frame=compose.php&mailtodata='; |
| 170 | $redirect_url .= urlencode($mailtodata); |
| 171 | } |
| 172 | |
| 173 | /* Write session data and send them off to the appropriate page. */ |
| 174 | session_write_close(); |
| 175 | header("Location: $redirect_url"); |
| 176 | exit; |
| 177 | |
| 178 | /* --------------------- end main ----------------------- */ |
| 179 | |
| 180 | function attachment_common_parse($str) { |
| 181 | global $attachment_common_types, $attachment_common_types_parsed; |
| 182 | |
| 183 | /* |
| 184 | * Replace ", " with "," and explode on that as Mozilla 1.x seems to |
| 185 | * use "," to seperate whilst IE, and earlier versions of Mozilla use |
| 186 | * ", " to seperate |
| 187 | */ |
| 188 | |
| 189 | $str = str_replace( ', ' , ',' , $str ); |
| 190 | $types = explode(',', $str); |
| 191 | |
| 192 | foreach ($types as $val) { |
| 193 | // Ignore the ";q=1.0" stuff |
| 194 | if (strpos($val, ';') !== false) { |
| 195 | $val = substr($val, 0, strpos($val, ';')); |
| 196 | } |
| 197 | if (! isset($attachment_common_types[$val])) { |
| 198 | $attachment_common_types[$val] = true; |
| 199 | } |
| 200 | } |
| 201 | sqsession_register($attachment_common_types, 'attachment_common_types'); |
| 202 | |
| 203 | /* mark as parsed */ |
| 204 | $attachment_common_types_parsed[$str] = true; |
| 205 | } |