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 $_SESSION=array();
  41
  42
  43 /**
  44  * PHP bug. http://bugs.php.net/11643 (warning, spammed bug tracker) and
  45  * http://bugs.php.net/13834
  46  * SID constant is not destroyed in PHP 4.1.2, 4.2.3 and maybe other
  47  * versions. Produces warning on login page. Bug should be fixed only in 4.3.0
  48  */
  49
  50 /**
  51  * This detects if the IMAP server has logins disabled, and if so,
  52  * squelches the display of the login form and puts up a message
  53  * explaining the situation.
  54  */
  55 if($imap_auth_mech == 'login') {
  56     /**
  57      * detect disabled login, only when imapServerAddress contains
  58      * server address and not mapping. See sqimap_get_user_server()
  59      */
  60     if (substr($imapServerAddress, 0, 4) != "map:") {
  61         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  62         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  63         sqimap_logout($imap);
  64         if ($logindisabled) {
  65             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  66                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  67             if (!$use_imap_tls) {
  68                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  69             }
  70             $string .= _("Please contact your system administrator and report this error.");
  71             error_box($string,$color);
  72             exit;
  73         }
  74     }
  75 }
  76
  77 do_hook('login_cookie');
  78
  79 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
  80
  81 /* Output the javascript onload function. */
  82 $header = "<script type=\"text/javascript\">\n" .
  83           "<!--\n".
  84           "  function squirrelmail_loginpage_onload() {\n".
  85           "    var textElements = 0;\n".
  86           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  87           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  88           "        textElements++;\n".
  89           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  90           "          document.forms[0].elements[i].focus();\n".
  91           "          break;\n".
  92           "        }\n".
  93           "      }\n".
  94           "    }\n".
  95           "  }\n".
  96           "// -->\n".
  97           "</script>\n";
  98
  99 if (@file_exists($theme[$theme_default]['PATH']))
 100    @include ($theme[$theme_default]['PATH']);
 101
 102 if (! isset($color) || ! is_array($color)) {
 103     // Add default color theme, if theme loading fails
 104     $color = array();
 105     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 106     $color[1]  = '#800000';  /* red                                  */
 107     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 108     $color[4]  = '#ffffff';  /* white         Normal Background      */
 109     $color[7]  = '#0000cc';  /* blue          Links                  */
 110     $color[8]  = '#000000';  /* black         Normal text            */
 111 }
 112 /**
 113  * send out all the cookies
 114  */
 115 sqsetcookieflush();
 116
 117 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 118
 119
 120 /* If they don't have a logo, don't bother.. */
 121 $logo_str = '';
 122 if (isset($org_logo) && $org_logo) {
 123     /* Display width and height like good little people */
 124     $width_and_height = '';
 125     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 126      $org_logo_width>0) {
 127         $width_and_height = " width=\"$org_logo_width\"";
 128     }
 129     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 130      $org_logo_height>0) {
 131         $width_and_height .= " height=\"$org_logo_height\"";
 132     }
 133
 134     $logo_str = '<img src="'.$org_logo.'" ' .
 135                         'alt="'. sprintf(_("%s Logo"), $org_name).'" ' .
 136                         $width_and_height .
 137                 'class="sqm_loginImage" ' .
 138                         ' /><br />'."\n";
 139 }
 140
 141 $sm_attribute_str = '';
 142 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 143     $sm_attribute_str = _("SquirrelMail Webmail Application")."<br />\n" .
 144                         _("By the SquirrelMail Project Team")."<br />\n";
 145 }
 146
 147 $username_form_name = 'login_username';
 148 $password_form_name = 'secretkey';
 149
 150 if(sqgetGlobalVar('mailto', $mailto)) {
 151     $rcptaddress = addHidden('mailto', $mailto);
 152 } else {
 153     $rcptaddress = '';
 154 }
 155
 156 $password_field = addPwField($password_form_name).
 157                   addHidden('js_autodetect_results', SMPREF_JS_OFF).
 158                   $rcptaddress .
 159                   addHidden('just_logged_in', '1');
 160
 161 session_write_close();
 162
 163 $oTemplate->assign('logo_str', $logo_str);
 164 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 165 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 166 $oTemplate->assign('login_field', addInput($username_form_name, $loginname_value));
 167 $oTemplate->assign('password_field', $password_field);
 168 $oTemplate->assign('submit_field', addSubmit(_("Login")));
 169
 170 $oTemplate->display('login.tpl');
 171
 172 // Turn off delayed error handling to make sure all errors are dumped.
 173 $oErrorHandler->delayedErrors(false);
 174
 175 trigger_error('login');
 176 $oTemplate->display('footer.tpl');
 177 ?>