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 if ( !empty($_SESSION['session_expired_post']) && !empty($_SESSION['session_expired_location']) ) {
  38     $sep = $_SESSION['session_expired_post'];
  39     $sel = $_SESSION['session_expired_location'];
  40
  41     sqsession_destroy();
  42     @sqsession_is_active();
  43     $_SESSION=array();
  44     sqsession_register($sep, 'session_expired_post');
  45     sqsession_register($sel, 'session_expired_location');
  46 } else {
  47     sqsession_destroy();
  48     @sqsession_is_active();
  49     $_SESSION=array();
  50 }
  51
  52 /**
  53  * This detects if the IMAP server has logins disabled, and if so,
  54  * squelches the display of the login form and puts up a message
  55  * explaining the situation.
  56  */
  57 if($imap_auth_mech == 'login') {
  58     /**
  59      * detect disabled login, only when imapServerAddress contains
  60      * server address and not mapping. See sqimap_get_user_server()
  61      */
  62     if (substr($imapServerAddress, 0, 4) != "map:") {
  63         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  64         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  65         sqimap_logout($imap);
  66         if ($logindisabled) {
  67             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  68                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  69             if (!$use_imap_tls) {
  70                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  71             }
  72             $string .= _("Please contact your system administrator and report this error.");
  73             error_box($string);
  74             // display footer (closes html tags) and stop script execution
  75             $oTemplate->display('footer.tpl');
  76             exit;
  77         }
  78     }
  79 }
  80
  81 do_hook('login_cookie', $null);
  82
  83 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
  84
  85 //FIXME: should be part of the template, not the core!
  86 /* Output the javascript onload function. */
  87 $header = "<script type=\"text/javascript\">\n" .
  88           "<!--\n".
  89           "  function squirrelmail_loginpage_onload() {\n".
  90           "    var textElements = 0;\n".
  91           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  92           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  93           "        textElements++;\n".
  94           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  95           "          document.forms[0].elements[i].focus();\n".
  96           "          break;\n".
  97           "        }\n".
  98           "      }\n".
  99           "    }\n".
 100           "  }\n".
 101           "// -->\n".
 102           "</script>\n";
 103
 104 if (@file_exists($theme[$theme_default]['PATH']))
 105    @include ($theme[$theme_default]['PATH']);
 106
 107 if (! isset($color) || ! is_array($color)) {
 108     // Add default color theme, if theme loading fails
 109     $color = array();
 110     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 111     $color[1]  = '#800000';  /* red                                  */
 112     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 113     $color[4]  = '#ffffff';  /* white         Normal Background      */
 114     $color[7]  = '#0000cc';  /* blue          Links                  */
 115     $color[8]  = '#000000';  /* black         Normal text            */
 116 }
 117
 118 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 119
 120
 121
 122 /* If they don't have a logo, don't bother.. */
 123 $logo_str = '';
 124 if (isset($org_logo) && $org_logo) {
 125
 126     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 127      $org_logo_width>0) {
 128         $width = $org_logo_width;
 129     } else {
 130         $width = '';
 131     }
 132     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 133      $org_logo_height>0) {
 134         $height = $org_logo_height;
 135     } else {
 136         $height = '';
 137     }
 138
 139     $logo_str = create_image($org_logo, sprintf(_("%s Logo"), $org_name),
 140                              $width, $height, '', 'sqm_loginImage');
 141
 142 }
 143
 144 $sm_attribute_str = '';
 145 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 146     $sm_attribute_str = _("SquirrelMail Webmail")."\n" .
 147                         _("By the SquirrelMail Project Team");
 148 }
 149
 150 if(sqgetGlobalVar('mailtodata', $mailtodata)) {
 151     $mailtofield = addHidden('mailtodata', $mailtodata);
 152 } else {
 153     $mailtofield = '';
 154 }
 155
 156 $password_field = addPwField('secretkey');
 157 $login_extra = addHidden('js_autodetect_results', SMPREF_JS_OFF).
 158                $mailtofield .
 159                addHidden('just_logged_in', '1');
 160
 161 session_write_close();
 162
 163 $oTemplate->assign('logo_str', $logo_str);
 164 $oTemplate->assign('logo_path', $org_logo);
 165 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 166 // i18n: The %s represents the service provider's name
 167 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 168 // i18n: The %s represents the service provider's name
 169 $oTemplate->assign('org_logo_str', sprintf (_("The %s logo"), $org_name));
 170 $oTemplate->assign('login_field_value', $loginname_value);
 171 $oTemplate->assign('login_extra', $login_extra);
 172
 173 //FIXME: need to remove *ALL* HTML from this file!
 174 echo '<body onload="squirrelmail_loginpage_onload()">'."\n";
 175 echo '<form action="redirect.php" method="post" onsubmit="document.forms[0].js_autodetect_results.value='. SMPREF_JS_ON .'">'."\n";
 176 do_hook('login_top', $null);
 177
 178 $oTemplate->display('login.tpl');
 179
 180 //FIXME: need to remove *ALL* HTML from this file!
 181 echo "</form>\n";
 182 do_hook('login_bottom', $null);
 183
 184 // Turn off delayed error handling to make sure all errors are dumped.
 185 $oErrorHandler->setDelayedErrors(false);
 186
 187 $oTemplate->display('footer.tpl');