src/login.php

   1 <?php
   2
   3 /**
   4  * login.php -- simple login screen
   5  *
   6  * Copyright (c) 1999-2003 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This a simple login screen. Some housekeeping is done to clean
  10  * cookies and find language.
  11  *
  12  * $Id$
  13  * @package squirrelmail
  14  */
  15
  16 /** Path for SquirrelMail required files. */
  17 define('SM_PATH','../');
  18
  19 /* SquirrelMail required files. */
  20 require_once(SM_PATH . 'functions/strings.php');
  21 require_once(SM_PATH . 'config/config.php');
  22 require_once(SM_PATH . 'functions/i18n.php');
  23 require_once(SM_PATH . 'functions/plugin.php');
  24 require_once(SM_PATH . 'functions/constants.php');
  25 require_once(SM_PATH . 'functions/page_header.php');
  26 require_once(SM_PATH . 'functions/html.php');
  27 require_once(SM_PATH . 'functions/global.php');
  28 require_once(SM_PATH . 'functions/imap_general.php');
  29
  30 /**
  31  * $squirrelmail_language is set by a cookie when the user selects
  32  * language and logs out
  33  */
  34 set_up_language($squirrelmail_language, TRUE, TRUE);
  35
  36 /**
  37  * Find out the base URI to set cookies.
  38  */
  39 if (!function_exists('sqm_baseuri')){
  40     require_once(SM_PATH . 'functions/display_messages.php');
  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 header('Pragma: no-cache');
  52
  53 /**
  54  * This detects if the IMAP server has logins disabled, and if so,
  55  * squelches the display of the login form and puts up a message
  56  * explaining the situation.
  57  */
  58 $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  59 $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  60 sqimap_logout($imap);
  61 if ($logindisabled) {
  62     $string = "The IMAP server is reporting that logins are disabled.<br>";
  63     if (!$use_imap_tls) {
  64         $string .= "The use of TLS may allow SquirrelMail to login.<br>";
  65     }
  66     $string .= "Please contact your system administrator.";
  67     error_box($string,$color);
  68     exit;
  69 }
  70
  71 do_hook('login_cookie');
  72
  73 /* Output the javascript onload function. */
  74
  75 $header = "<script language=\"JavaScript\" type=\"text/javascript\">\n" .
  76           "<!--\n".
  77           "  function squirrelmail_loginpage_onload() {\n".
  78           "    document.forms[0].js_autodetect_results.value = '" . SMPREF_JS_ON . "';\n".
  79           "    var textElements = 0;\n".
  80           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  81           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  82           "        textElements++;\n".
  83           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  84           "          document.forms[0].elements[i].focus();\n".
  85           "          break;\n".
  86           "        }\n".
  87           "      }\n".
  88           "    }\n".
  89           "  }\n".
  90           "// -->\n".
  91           "</script>\n";
  92
  93 if (@file_exists($theme[$theme_default]['PATH']))
  94    @include ($theme[$theme_default]['PATH']);
  95
  96 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
  97
  98 echo "<body text=\"$color[8]\" bgcolor=\"$color[4]\" link=\"$color[7]\" vlink=\"$color[7]\" alink=\"$color[7]\" onLoad=\"squirrelmail_loginpage_onload()\">" .
  99      "\n" . '<form action="redirect.php" method="post">' . "\n";
 100
 101 $username_form_name = 'login_username';
 102 $password_form_name = 'secretkey';
 103 do_hook('login_top');
 104
 105 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
 106
 107 /* If they don't have a logo, don't bother.. */
 108 if (isset($org_logo) && $org_logo) {
 109     /* Display width and height like good little people */
 110     $width_and_height = '';
 111     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 112      $org_logo_width>0) {
 113         $width_and_height = " width=\"$org_logo_width\"";
 114     }
 115     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 116      $org_logo_height>0) {
 117         $width_and_height .= " height=\"$org_logo_height\"";
 118     }
 119 }
 120
 121 if(sqgetGlobalVar('mailto', $mailto)) {
 122     $rcptaddress = '<input type="hidden" name="mailto" value="' . urlencode($mailto) . '" />' . "\n";
 123 } else {
 124     $rcptaddress = '';
 125 }
 126 echo html_tag( 'table',
 127     html_tag( 'tr',
 128         html_tag( 'td',
 129             '<center>'.
 130             ( isset($org_logo) && $org_logo
 131               ? '<img src="' . $org_logo . '" alt="' .
 132                 sprintf(_("%s Logo"), $org_name) .'"' . $width_and_height .
 133                 ' /><br />' . "\n"
 134               : '' ).
 135             ( (isset($hide_sm_attributions) && $hide_sm_attributions) ? '' :
 136             '<small>' . sprintf (_("SquirrelMail version %s"), $version) . '<br />' ."\n".
 137             '  ' . _("By the SquirrelMail Development Team") . '<br /></small>' . "\n" ) .
 138             html_tag( 'table',
 139                 html_tag( 'tr',
 140                     html_tag( 'td',
 141                         '<b>' . sprintf (_("%s Login"), $org_name) . "</b>\n",
 142                     'center', $color[0] )
 143                 ) .
 144                 html_tag( 'tr',
 145                     html_tag( 'td',  "\n" .
 146                         html_tag( 'table',
 147                             html_tag( 'tr',
 148                                 html_tag( 'td',
 149                                     _("Name:") ,
 150                                 'right', '', 'width="30%"' ) .
 151                                 html_tag( 'td',
 152                                     '<input type="text" name="' . $username_form_name .'" value="' . $loginname_value .'" />' ,
 153                                 'left', '', 'width="*"' )
 154                                 ) . "\n" .
 155                             html_tag( 'tr',
 156                                 html_tag( 'td',
 157                                     _("Password:") ,
 158                                 'right', '', 'width="30%"' ) .
 159                                 html_tag( 'td',
 160                                     '<input type="password" name="' . $password_form_name . '" />' . "\n" .
 161                                     '<input type="hidden" name="js_autodetect_results" value="SMPREF_JS_OFF" />' . "\n" .
 162                                     $rcptaddress .
 163                                     '<input type="hidden" name="just_logged_in" value="1" />' . "\n",
 164                                 'left', '', 'width="*"' )
 165                             ) ,
 166                         'center', $color[4], 'border="0" width="100%"' ) ,
 167                     'left', $color[4] )
 168                 ) .
 169                 html_tag( 'tr',
 170                     html_tag( 'td',
 171                         '<center><input type="submit" value="' . _("Login") . '" /></center>',
 172                     'left' )
 173                 ),
 174             '', $color[4], 'border="0" width="350"' ) . '</center>',
 175         'center' )
 176     ) ,
 177 '', $color[4], 'border="0" cellspacing="0" cellpadding="0" width="100%"' );
 178 do_hook('login_form');
 179 echo '</form>' . "\n";
 180
 181 do_hook('login_bottom');
 182 echo "</body>\n".
 183      "</html>\n";
 184 ?>