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 // reduces the files included in init.php
  16 $sInitLocation = 'login';
  17
  18 /**
  19  * Include the SquirrelMail initialization file.
  20  */
  21 require('../include/init.php');
  22
  23
  24 /* SquirrelMail required files. */
  25 require_once(SM_PATH . 'functions/imap_general.php');
  26 require_once(SM_PATH . 'functions/forms.php');
  27
  28 /**
  29  * $squirrelmail_language is set by a cookie when the user selects
  30  * language and logs out
  31  */
  32 set_up_language($squirrelmail_language, TRUE, TRUE);
  33
  34 /*
  35  * In case the last session was not terminated properly, make sure
  36  * we get a new one.
  37  */
  38 sqsession_destroy();
  39 sqsession_is_active();
  40 $_SESSION=array();
  41
  42
  43 /**
  44  * PHP bug. http://bugs.php.net/11643 (warning, spammed bug tracker) and
  45  * http://bugs.php.net/13834
  46  * SID constant is not destroyed in PHP 4.1.2, 4.2.3 and maybe other
  47  * versions. Produces warning on login page. Bug should be fixed only in 4.3.0
  48  */
  49
  50 //exit;
  51 /**
  52  * This detects if the IMAP server has logins disabled, and if so,
  53  * squelches the display of the login form and puts up a message
  54  * explaining the situation.
  55  */
  56 if($imap_auth_mech == 'login') {
  57     /**
  58      * detect disabled login, only when imapServerAddress contains
  59      * server address and not mapping. See sqimap_get_user_server()
  60      */
  61     if (substr($imapServerAddress, 0, 4) != "map:") {
  62         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  63         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  64         sqimap_logout($imap);
  65         if ($logindisabled) {
  66             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  67                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  68             if (!$use_imap_tls) {
  69                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  70             }
  71             $string .= _("Please contact your system administrator and report this error.");
  72             error_box($string,$color);
  73             exit;
  74         }
  75     }
  76 }
  77
  78 do_hook('login_cookie');
  79
  80 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
  81
  82 /* Output the javascript onload function. */
  83 $header = "<script type=\"text/javascript\">\n" .
  84           "<!--\n".
  85           "  function squirrelmail_loginpage_onload() {\n".
  86           "    var textElements = 0;\n".
  87           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  88           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  89           "        textElements++;\n".
  90           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  91           "          document.forms[0].elements[i].focus();\n".
  92           "          break;\n".
  93           "        }\n".
  94           "      }\n".
  95           "    }\n".
  96           "  }\n".
  97           "// -->\n".
  98           "</script>\n";
  99
 100 if (@file_exists($theme[$theme_default]['PATH']))
 101    @include ($theme[$theme_default]['PATH']);
 102
 103 if (! isset($color) || ! is_array($color)) {
 104     // Add default color theme, if theme loading fails
 105     $color = array();
 106     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 107     $color[1]  = '#800000';  /* red                                  */
 108     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 109     $color[4]  = '#ffffff';  /* white         Normal Background      */
 110     $color[7]  = '#0000cc';  /* blue          Links                  */
 111     $color[8]  = '#000000';  /* black         Normal text            */
 112 }
 113
 114 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 115
 116
 117 /* If they don't have a logo, don't bother.. */
 118 $logo_str = '';
 119 if (isset($org_logo) && $org_logo) {
 120     /* Display width and height like good little people */
 121     $width_and_height = '';
 122     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 123      $org_logo_width>0) {
 124         $width_and_height = " width=\"$org_logo_width\"";
 125     }
 126     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 127      $org_logo_height>0) {
 128         $width_and_height .= " height=\"$org_logo_height\"";
 129     }
 130
 131     $logo_str = '<img src="'.$org_logo.'" ' .
 132                         'alt="'. sprintf(_("%s Logo"), $org_name).'" ' .
 133                         $width_and_height .
 134                 'class="sqm_loginImage" ' .
 135                         ' /><br />'."\n";
 136 }
 137
 138 $sm_attribute_str = '';
 139 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 140     $sm_attribute_str = _("SquirrelMail Webmail Application")."<br />\n" .
 141                         _("By the SquirrelMail Project Team")."<br />\n";
 142 }
 143
 144 $username_form_name = 'login_username';
 145 $password_form_name = 'secretkey';
 146
 147 if(sqgetGlobalVar('mailto', $mailto)) {
 148     $rcptaddress = addHidden('mailto', $mailto);
 149 } else {
 150     $rcptaddress = '';
 151 }
 152
 153 $password_field = addPwField($password_form_name).
 154                   addHidden('js_autodetect_results', SMPREF_JS_OFF).
 155                   $rcptaddress .
 156                   addHidden('just_logged_in', '1');
 157
 158 session_write_close();
 159
 160 $oTemplate->assign('color', $color);
 161 $oTemplate->assign('logo_str', $logo_str);
 162 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 163 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 164 $oTemplate->assign('login_field', addInput($username_form_name, $loginname_value));
 165 $oTemplate->assign('password_field', $password_field);
 166 $oTemplate->assign('submit_field', addSubmit(_("Login")));
 167
 168 $oTemplate->display('login.tpl');
 169 ?>