src/login.php

   1 <?php
   2
   3 /**
   4  * login.php -- simple login screen
   5  *
   6  * Copyright (c) 1999-2004 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 $base_uri = sqm_baseuri();
  43
  44 /*
  45  * In case the last session was not terminated properly, make sure
  46  * we get a new one.
  47  */
  48
  49 sqsession_destroy();
  50
  51 header('Pragma: no-cache');
  52
  53 /**
  54  * This detects if the IMAP server has logins disabled, and if so,
  55  * squelches the display of the login form and puts up a message
  56  * explaining the situation.
  57  */
  58 if($imap_auth_mech == 'login') {
  59     $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  60     $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  61     sqimap_logout($imap);
  62     if ($logindisabled) {
  63         $string = "The IMAP server is reporting that logins are disabled.<br>";
  64         if (!$use_imap_tls) {
  65             $string .= "The use of TLS may allow SquirrelMail to login.<br>";
  66         }
  67         $string .= "Please contact your system administrator.";
  68         error_box($string,$color);
  69         exit;
  70     }
  71 }
  72
  73 do_hook('login_cookie');
  74
  75 /* Output the javascript onload function. */
  76
  77 $header = "<script language=\"JavaScript\" type=\"text/javascript\">\n" .
  78           "<!--\n".
  79           "  function squirrelmail_loginpage_onload() {\n".
  80           "    document.forms[0].js_autodetect_results.value = '" . SMPREF_JS_ON . "';\n".
  81           "    var textElements = 0;\n".
  82           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  83           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  84           "        textElements++;\n".
  85           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  86           "          document.forms[0].elements[i].focus();\n".
  87           "          break;\n".
  88           "        }\n".
  89           "      }\n".
  90           "    }\n".
  91           "  }\n".
  92           "// -->\n".
  93           "</script>\n";
  94
  95 if (@file_exists($theme[$theme_default]['PATH']))
  96    @include ($theme[$theme_default]['PATH']);
  97
  98 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
  99
 100 echo "<body text=\"$color[8]\" bgcolor=\"$color[4]\" link=\"$color[7]\" vlink=\"$color[7]\" alink=\"$color[7]\" onLoad=\"squirrelmail_loginpage_onload()\">" .
 101      "\n" . '<form action="redirect.php" method="post">' . "\n";
 102
 103 $username_form_name = 'login_username';
 104 $password_form_name = 'secretkey';
 105 do_hook('login_top');
 106
 107 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
 108
 109 /* If they don't have a logo, don't bother.. */
 110 if (isset($org_logo) && $org_logo) {
 111     /* Display width and height like good little people */
 112     $width_and_height = '';
 113     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 114      $org_logo_width>0) {
 115         $width_and_height = " width=\"$org_logo_width\"";
 116     }
 117     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 118      $org_logo_height>0) {
 119         $width_and_height .= " height=\"$org_logo_height\"";
 120     }
 121 }
 122
 123 if(sqgetGlobalVar('mailto', $mailto)) {
 124     $rcptaddress = '<input type="hidden" name="mailto" value="' . urlencode($mailto) . '" />' . "\n";
 125 } else {
 126     $rcptaddress = '';
 127 }
 128 echo html_tag( 'table',
 129     html_tag( 'tr',
 130         html_tag( 'td',
 131             '<center>'.
 132             ( isset($org_logo) && $org_logo
 133               ? '<img src="' . $org_logo . '" alt="' .
 134                 sprintf(_("%s Logo"), $org_name) .'"' . $width_and_height .
 135                 ' /><br />' . "\n"
 136               : '' ).
 137             ( (isset($hide_sm_attributions) && $hide_sm_attributions) ? '' :
 138             '<small>' . sprintf (_("SquirrelMail version %s"), $version) . '<br />' ."\n".
 139             '  ' . _("By the SquirrelMail Development Team") . '<br /></small>' . "\n" ) .
 140             html_tag( 'table',
 141                 html_tag( 'tr',
 142                     html_tag( 'td',
 143                         '<b>' . sprintf (_("%s Login"), $org_name) . "</b>\n",
 144                     'center', $color[0] )
 145                 ) .
 146                 html_tag( 'tr',
 147                     html_tag( 'td',  "\n" .
 148                         html_tag( 'table',
 149                             html_tag( 'tr',
 150                                 html_tag( 'td',
 151                                     _("Name:") ,
 152                                 'right', '', 'width="30%"' ) .
 153                                 html_tag( 'td',
 154                                     '<input type="text" name="' . $username_form_name .'" value="' . $loginname_value .'" />' ,
 155                                 'left', '', 'width="*"' )
 156                                 ) . "\n" .
 157                             html_tag( 'tr',
 158                                 html_tag( 'td',
 159                                     _("Password:") ,
 160                                 'right', '', 'width="30%"' ) .
 161                                 html_tag( 'td',
 162                                     '<input type="password" name="' . $password_form_name . '" />' . "\n" .
 163                                     '<input type="hidden" name="js_autodetect_results" value="SMPREF_JS_OFF" />' . "\n" .
 164                                     $rcptaddress .
 165                                     '<input type="hidden" name="just_logged_in" value="1" />' . "\n",
 166                                 'left', '', 'width="*"' )
 167                             ) ,
 168                         'center', $color[4], 'border="0" width="100%"' ) ,
 169                     'left', $color[4] )
 170                 ) .
 171                 html_tag( 'tr',
 172                     html_tag( 'td',
 173                         '<center><input type="submit" value="' . _("Login") . '" /></center>',
 174                     'left' )
 175                 ),
 176             '', $color[4], 'border="0" width="350"' ) . '</center>',
 177         'center' )
 178     ) ,
 179 '', $color[4], 'border="0" cellspacing="0" cellpadding="0" width="100%"' );
 180 do_hook('login_form');
 181 echo '</form>' . "\n";
 182
 183 do_hook('login_bottom');
 184 echo "</body>\n".
 185      "</html>\n";
 186 ?>