src/login.php

   1 <?php
   2
   3 /**
   4  * login.php -- simple login screen
   5  *
   6  * This a simple login screen. Some housekeeping is done to clean
   7  * cookies and find language.
   8  *
   9  * @copyright &copy; 1999-2007 The SquirrelMail Project Team
  10  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  11  * @version $Id$
  12  * @package squirrelmail
  13  */
  14
  15 /** This is the login page */
  16 define('PAGE_NAME', 'login');
  17
  18 /**
  19  * Include the SquirrelMail initialization file.
  20  */
  21 require('../include/init.php');
  22
  23 /* SquirrelMail required files. */
  24 require_once(SM_PATH . 'functions/imap_general.php');
  25 require_once(SM_PATH . 'functions/forms.php');
  26
  27 /**
  28  * $squirrelmail_language is set by a cookie when the user selects
  29  * language and logs out
  30  */
  31 set_up_language($squirrelmail_language, TRUE, TRUE);
  32
  33 /**
  34  * In case the last session was not terminated properly, make sure
  35  * we get a new one, but make sure we preserve session_expired_*
  36  */
  37 $sep = '';
  38 $sel = '';
  39 sqGetGlobalVar('session_expired_post', $sep, SQ_SESSION);
  40 sqGetGlobalVar('session_expired_location', $sel, SQ_SESSION);
  41
  42 /* blow away session */
  43 sqsession_destroy();
  44
  45 /**
  46  * in some rare instances, the session seems to stick
  47  * around even after destroying it (!!), so if it does,
  48  * we'll manually flatten the $_SESSION data
  49  */
  50 if (!empty($_SESSION)) {
  51     $_SESSION = array();
  52 }
  53
  54 /* start session and put session_expired_* variables back in session */
  55 @sqsession_is_active();
  56 if (!empty($sep) && !empty($sel)) {
  57     sqsession_register($sep, 'session_expired_post');
  58     sqsession_register($sel, 'session_expired_location');
  59 }
  60
  61 /**
  62  * This detects if the IMAP server has logins disabled, and if so,
  63  * squelches the display of the login form and puts up a message
  64  * explaining the situation.
  65  */
  66 if($imap_auth_mech == 'login') {
  67     /**
  68      * detect disabled login, only when imapServerAddress contains
  69      * server address and not mapping. See sqimap_get_user_server()
  70      */
  71     if (substr($imapServerAddress, 0, 4) != "map:") {
  72         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  73         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  74         sqimap_logout($imap);
  75         if ($logindisabled) {
  76             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  77                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  78             if (!$use_imap_tls) {
  79                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  80             }
  81             $string .= _("Please contact your system administrator and report this error.");
  82             error_box($string);
  83             // display footer (closes html tags) and stop script execution
  84             $oTemplate->display('footer.tpl');
  85             exit;
  86         }
  87     }
  88 }
  89
  90 do_hook('login_cookie', $null);
  91
  92 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
  93
  94 //FIXME: should be part of the template, not the core!
  95 /* Output the javascript onload function. */
  96 $header = "<script type=\"text/javascript\">\n" .
  97           "<!--\n".
  98           "  function squirrelmail_loginpage_onload() {\n".
  99           "    var textElements = 0;\n".
 100           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
 101           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
 102           "        textElements++;\n".
 103           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
 104           "          document.forms[0].elements[i].focus();\n".
 105           "          break;\n".
 106           "        }\n".
 107           "      }\n".
 108           "    }\n".
 109           "  }\n".
 110           "// -->\n".
 111           "</script>\n";
 112
 113 if (@file_exists($theme[$theme_default]['PATH']))
 114    @include ($theme[$theme_default]['PATH']);
 115
 116 if (! isset($color) || ! is_array($color)) {
 117     // Add default color theme, if theme loading fails
 118     $color = array();
 119     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 120     $color[1]  = '#800000';  /* red                                  */
 121     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 122     $color[4]  = '#ffffff';  /* white         Normal Background      */
 123     $color[7]  = '#0000cc';  /* blue          Links                  */
 124     $color[8]  = '#000000';  /* black         Normal text            */
 125 }
 126
 127 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 128
 129
 130
 131 /* If they don't have a logo, don't bother.. */
 132 $logo_str = '';
 133 if (isset($org_logo) && $org_logo) {
 134
 135     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 136      $org_logo_width>0) {
 137         $width = $org_logo_width;
 138     } else {
 139         $width = '';
 140     }
 141     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 142      $org_logo_height>0) {
 143         $height = $org_logo_height;
 144     } else {
 145         $height = '';
 146     }
 147
 148     $logo_str = create_image($org_logo, sprintf(_("%s Logo"), $org_name),
 149                              $width, $height, '', 'sqm_loginImage');
 150
 151 }
 152
 153 $sm_attribute_str = '';
 154 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 155     $sm_attribute_str = _("SquirrelMail Webmail")."\n" .
 156                         _("By the SquirrelMail Project Team");
 157 }
 158
 159 if(sqgetGlobalVar('mailtodata', $mailtodata)) {
 160     $mailtofield = addHidden('mailtodata', $mailtodata);
 161 } else {
 162     $mailtofield = '';
 163 }
 164
 165 $password_field = addPwField('secretkey');
 166 $login_extra = addHidden('js_autodetect_results', SMPREF_JS_OFF).
 167                $mailtofield .
 168                addHidden('just_logged_in', '1');
 169
 170 session_write_close();
 171
 172 $oTemplate->assign('logo_str', $logo_str, FALSE);
 173 $oTemplate->assign('logo_path', $org_logo);
 174 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 175 // i18n: The %s represents the service provider's name
 176 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 177 // i18n: The %s represents the service provider's name
 178 $oTemplate->assign('org_logo_str', sprintf (_("The %s logo"), $org_name));
 179 $oTemplate->assign('login_field_value', $loginname_value);
 180 $oTemplate->assign('login_extra', $login_extra, FALSE);
 181
 182 //FIXME: need to remove *ALL* HTML from this file!
 183 echo '<body onload="squirrelmail_loginpage_onload()">'."\n";
 184 echo '<form action="redirect.php" method="post" onsubmit="document.forms[0].js_autodetect_results.value='. SMPREF_JS_ON .'">'."\n";
 185 do_hook('login_top', $null);
 186
 187 $oTemplate->display('login.tpl');
 188
 189 //FIXME: need to remove *ALL* HTML from this file!
 190 echo "</form>\n";
 191 do_hook('login_bottom', $null);
 192
 193 // Turn off delayed error handling to make sure all errors are dumped.
 194 $oErrorHandler->setDelayedErrors(false);
 195
 196 $oTemplate->display('footer.tpl');