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/strings.php');
  23 require_once(SM_PATH . 'config/config.php');
  24 require_once(SM_PATH . 'functions/i18n.php');
  25 require_once(SM_PATH . 'functions/plugin.php');
  26 require_once(SM_PATH . 'functions/constants.php');
  27 require_once(SM_PATH . 'functions/page_header.php');
  28 require_once(SM_PATH . 'functions/html.php');
  29 require_once(SM_PATH . 'functions/global.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 if (!function_exists('sqm_baseuri')){
  43     require_once(SM_PATH . 'functions/display_messages.php');
  44 }
  45 $base_uri = sqm_baseuri();
  46
  47 /*
  48  * In case the last session was not terminated properly, make sure
  49  * we get a new one.
  50  */
  51
  52 sqsession_destroy();
  53 /**
  54  * PHP bug. http://bugs.php.net/11643 (warning, spammed bug tracker) and
  55  * http://bugs.php.net/13834
  56  * SID constant is not destroyed in PHP 4.1.2, 4.2.3 and maybe other
  57  * versions. Produces warning on login page. Bug should be fixed only in 4.3.0
  58  */
  59 @sqsession_start();
  60 header('Pragma: no-cache');
  61
  62 /**
  63  * This detects if the IMAP server has logins disabled, and if so,
  64  * squelches the display of the login form and puts up a message
  65  * explaining the situation.
  66  */
  67 if($imap_auth_mech == 'login') {
  68     /**
  69      * detect disabled login, only when imapServerAddress contains
  70      * server address and not mapping. See sqimap_get_user_server()
  71      */
  72     if (substr($imapServerAddress, 0, 4) != "map:") {
  73         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  74         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  75         sqimap_logout($imap);
  76         if ($logindisabled) {
  77             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  78                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  79             if (!$use_imap_tls) {
  80                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  81             }
  82             $string .= _("Please contact your system administrator and report this error.");
  83             error_box($string,$color);
  84             exit;
  85         }
  86     }
  87 }
  88
  89 /*
  90  * Initialize the template object and custom error handler object
  91  */
  92 include_once(SM_PATH . 'class/template/template.class.php');
  93 include_once(SM_PATH . 'class/error.class.php');
  94
  95 /*
  96  * $sTplDir is not initialized when a user is not logged in, so we will use
  97  * the config file defaults here.  If the neccesary variables are net set,
  98  * force a default value.
  99  */
 100 $aTemplateSet = ( !isset($aTemplateSet) ? array() : $aTemplateSet );
 101 $templateset_default = ( !isset($templateset_default) ? 0 : $templateset_default );
 102 $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ?
 103              SM_PATH . 'templates/default/' :
 104              $aTemplateSet[$templateset_default]['PATH'] );
 105
 106 $oTemplate = new Template($sTplDir);
 107 $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl');
 108
 109 do_hook('login_cookie');
 110
 111 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
 112
 113 /* Output the javascript onload function. */
 114 $header = "<script type=\"text/javascript\">\n" .
 115           "<!--\n".
 116           "  function squirrelmail_loginpage_onload() {\n".
 117           "    var textElements = 0;\n".
 118           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
 119           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
 120           "        textElements++;\n".
 121           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
 122           "          document.forms[0].elements[i].focus();\n".
 123           "          break;\n".
 124           "        }\n".
 125           "      }\n".
 126           "    }\n".
 127           "  }\n".
 128           "// -->\n".
 129           "</script>\n";
 130
 131 if (@file_exists($theme[$theme_default]['PATH']))
 132    @include ($theme[$theme_default]['PATH']);
 133
 134 if (! isset($color) || ! is_array($color)) {
 135     // Add default color theme, if theme loading fails
 136     $color = array();
 137     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 138     $color[1]  = '#800000';  /* red                                  */
 139     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 140     $color[4]  = '#ffffff';  /* white         Normal Background      */
 141     $color[7]  = '#0000cc';  /* blue          Links                  */
 142     $color[8]  = '#000000';  /* black         Normal text            */
 143 }
 144
 145 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 146
 147
 148 /* If they don't have a logo, don't bother.. */
 149 $logo_str = '';
 150 if (isset($org_logo) && $org_logo) {
 151     /* Display width and height like good little people */
 152     $width_and_height = '';
 153     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 154      $org_logo_width>0) {
 155         $width_and_height = " width=\"$org_logo_width\"";
 156     }
 157     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 158      $org_logo_height>0) {
 159         $width_and_height .= " height=\"$org_logo_height\"";
 160     }
 161
 162     $logo_str = '<img src="'.$org_logo.'" ' .
 163                         'alt="'. sprintf(_("%s Logo"), $org_name).'" ' .
 164                         $width_and_height .
 165                 'class="sqm_loginImage" ' .
 166                         ' /><br />'."\n";
 167 }
 168
 169 $sm_attribute_str = '';
 170 $hide_sm_attributes = false;
 171 if (isset($hide_sm_attributes) && !$hide_sm_attributes) {
 172     $sm_attribute_str = _("SquirrelMail Webmail Application")."<br />\n" .
 173                         _("By the SquirrelMail Project Team")."<br />\n";
 174 }
 175
 176 $username_form_name = 'login_username';
 177 $password_form_name = 'secretkey';
 178
 179 if(sqgetGlobalVar('mailto', $mailto)) {
 180     $rcptaddress = addHidden('mailto', $mailto);
 181 } else {
 182     $rcptaddress = '';
 183 }
 184
 185 $password_field = addPwField($password_form_name).
 186                   addHidden('js_autodetect_results', SMPREF_JS_OFF).
 187                   $rcptaddress .
 188                   addHidden('just_logged_in', '1');
 189
 190 $oTemplate->assign('color', $color);
 191 $oTemplate->assign('logo_str', $logo_str);
 192 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 193 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 194 $oTemplate->assign('login_field', addInput($username_form_name, $loginname_value));
 195 $oTemplate->assign('password_field', $password_field);
 196 $oTemplate->assign('submit_field', addSubmit(_("Login")));
 197
 198 $oTemplate->display('login.tpl');
 199 ?>