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; 1999-2006 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 /**
  16  * Path for SquirrelMail required files.
  17  * @ignore
  18  */
  19 define('SM_PATH','../');
  20
  21 /* SquirrelMail required files. */
  22 require_once(SM_PATH . 'functions/global.php');
  23 require_once(SM_PATH . 'functions/strings.php');
  24 require_once(SM_PATH . 'config/config.php');
  25 require_once(SM_PATH . 'functions/i18n.php');
  26 require_once(SM_PATH . 'functions/plugin.php');
  27 require_once(SM_PATH . 'functions/constants.php');
  28 require_once(SM_PATH . 'functions/page_header.php');
  29 require_once(SM_PATH . 'functions/html.php');
  30 require_once(SM_PATH . 'functions/imap_general.php');
  31 require_once(SM_PATH . 'functions/forms.php');
  32
  33 /**
  34  * $squirrelmail_language is set by a cookie when the user selects
  35  * language and logs out
  36  */
  37 set_up_language($squirrelmail_language, TRUE, TRUE);
  38
  39 /**
  40  * Find out the base URI to set cookies.
  41  */
  42 $base_uri = sqm_baseuri();
  43
  44 /*
  45  * In case the last session was not terminated properly, make sure
  46  * we get a new one.
  47  */
  48
  49 sqsession_destroy();
  50 /**
  51  * PHP bug. http://bugs.php.net/11643 (warning, spammed bug tracker) and
  52  * http://bugs.php.net/13834
  53  * SID constant is not destroyed in PHP 4.1.2, 4.2.3 and maybe other
  54  * versions. Produces warning on login page. Bug should be fixed only in 4.3.0
  55  */
  56 @sqsession_start();
  57 header('Pragma: no-cache');
  58
  59 /**
  60  * This detects if the IMAP server has logins disabled, and if so,
  61  * squelches the display of the login form and puts up a message
  62  * explaining the situation.
  63  */
  64 if($imap_auth_mech == 'login') {
  65     /**
  66      * detect disabled login, only when imapServerAddress contains
  67      * server address and not mapping. See sqimap_get_user_server()
  68      */
  69     if (substr($imapServerAddress, 0, 4) != "map:") {
  70         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  71         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  72         sqimap_logout($imap);
  73         if ($logindisabled) {
  74             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  75                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  76             if (!$use_imap_tls) {
  77                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  78             }
  79             $string .= _("Please contact your system administrator and report this error.");
  80             error_box($string,$color);
  81             exit;
  82         }
  83     }
  84 }
  85
  86 /*
  87  * Initialize the template object and custom error handler object
  88  */
  89 include_once(SM_PATH . 'class/template/template.class.php');
  90 include_once(SM_PATH . 'class/error.class.php');
  91
  92 /*
  93  * $sTplDir is not initialized when a user is not logged in, so we will use
  94  * the config file defaults here.  If the neccesary variables are net set,
  95  * force a default value.
  96  */
  97 $aTemplateSet = ( !isset($aTemplateSet) ? array() : $aTemplateSet );
  98 $templateset_default = ( !isset($templateset_default) ? 0 : $templateset_default );
  99 $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ?
 100              SM_PATH . 'templates/default/' :
 101              $aTemplateSet[$templateset_default]['PATH'] );
 102
 103 $oTemplate = new Template($sTplDir);
 104 $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl');
 105
 106 do_hook('login_cookie');
 107
 108 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
 109
 110 /* Output the javascript onload function. */
 111 $header = "<script type=\"text/javascript\">\n" .
 112           "<!--\n".
 113           "  function squirrelmail_loginpage_onload() {\n".
 114           "    var textElements = 0;\n".
 115           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
 116           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
 117           "        textElements++;\n".
 118           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
 119           "          document.forms[0].elements[i].focus();\n".
 120           "          break;\n".
 121           "        }\n".
 122           "      }\n".
 123           "    }\n".
 124           "  }\n".
 125           "// -->\n".
 126           "</script>\n";
 127
 128 if (@file_exists($theme[$theme_default]['PATH']))
 129    @include ($theme[$theme_default]['PATH']);
 130
 131 if (! isset($color) || ! is_array($color)) {
 132     // Add default color theme, if theme loading fails
 133     $color = array();
 134     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 135     $color[1]  = '#800000';  /* red                                  */
 136     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 137     $color[4]  = '#ffffff';  /* white         Normal Background      */
 138     $color[7]  = '#0000cc';  /* blue          Links                  */
 139     $color[8]  = '#000000';  /* black         Normal text            */
 140 }
 141
 142 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 143
 144
 145 /* If they don't have a logo, don't bother.. */
 146 $logo_str = '';
 147 if (isset($org_logo) && $org_logo) {
 148     /* Display width and height like good little people */
 149     $width_and_height = '';
 150     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 151      $org_logo_width>0) {
 152         $width_and_height = " width=\"$org_logo_width\"";
 153     }
 154     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 155      $org_logo_height>0) {
 156         $width_and_height .= " height=\"$org_logo_height\"";
 157     }
 158
 159     $logo_str = '<img src="'.$org_logo.'" ' .
 160                         'alt="'. sprintf(_("%s Logo"), $org_name).'" ' .
 161                         $width_and_height .
 162                 'class="sqm_loginImage" ' .
 163                         ' /><br />'."\n";
 164 }
 165
 166 $sm_attribute_str = '';
 167 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 168     $sm_attribute_str = _("SquirrelMail Webmail Application")."<br />\n" .
 169                         _("By the SquirrelMail Project Team")."<br />\n";
 170 }
 171
 172 $username_form_name = 'login_username';
 173 $password_form_name = 'secretkey';
 174
 175 if(sqgetGlobalVar('mailto', $mailto)) {
 176     $rcptaddress = addHidden('mailto', $mailto);
 177 } else {
 178     $rcptaddress = '';
 179 }
 180
 181 $password_field = addPwField($password_form_name).
 182                   addHidden('js_autodetect_results', SMPREF_JS_OFF).
 183                   $rcptaddress .
 184                   addHidden('just_logged_in', '1');
 185
 186 $oTemplate->assign('color', $color);
 187 $oTemplate->assign('logo_str', $logo_str);
 188 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 189 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 190 $oTemplate->assign('login_field', addInput($username_form_name, $loginname_value));
 191 $oTemplate->assign('password_field', $password_field);
 192 $oTemplate->assign('submit_field', addSubmit(_("Login")));
 193
 194 $oTemplate->display('login.tpl');
 195 ?>