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; 1999-2007 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 /** This is the login page */
  16 define('PAGE_NAME', 'login');
  17
  18 // reduces the files included in init.php
  19 $sInitLocation = 'login';
  20
  21 /**
  22  * Include the SquirrelMail initialization file.
  23  */
  24 require('../include/init.php');
  25
  26
  27 /* SquirrelMail required files. */
  28 require_once(SM_PATH . 'functions/imap_general.php');
  29 require_once(SM_PATH . 'functions/forms.php');
  30
  31 /**
  32  * $squirrelmail_language is set by a cookie when the user selects
  33  * language and logs out
  34  */
  35 set_up_language($squirrelmail_language, TRUE, TRUE);
  36
  37 /**
  38  * In case the last session was not terminated properly, make sure
  39  * we get a new one, but make sure we preserve session_expired_*
  40  */
  41 if ( !empty($_SESSION['session_expired_post']) && !empty($_SESSION['session_expired_location']) ) {
  42     $sep = $_SESSION['session_expired_post'];
  43     $sel = $_SESSION['session_expired_location'];
  44
  45     sqsession_destroy();
  46     @sqsession_is_active();
  47     $_SESSION=array();
  48     sqsession_register($sep, 'session_expired_post');
  49     sqsession_register($sel, 'session_expired_location');
  50 } else {
  51     sqsession_destroy();
  52     @sqsession_is_active();
  53     $_SESSION=array();
  54 }
  55
  56 /**
  57  * This detects if the IMAP server has logins disabled, and if so,
  58  * squelches the display of the login form and puts up a message
  59  * explaining the situation.
  60  */
  61 if($imap_auth_mech == 'login') {
  62     /**
  63      * detect disabled login, only when imapServerAddress contains
  64      * server address and not mapping. See sqimap_get_user_server()
  65      */
  66     if (substr($imapServerAddress, 0, 4) != "map:") {
  67         $imap = sqimap_create_stream($imapServerAddress, $imapPort, $use_imap_tls);
  68         $logindisabled = sqimap_capability($imap,'LOGINDISABLED');
  69         sqimap_logout($imap);
  70         if ($logindisabled) {
  71             $string = _("The IMAP server is reporting that plain text logins are disabled.").'<br />'.
  72                 _("Using CRAM-MD5 or DIGEST-MD5 authentication instead may work.").'<br />';
  73             if (!$use_imap_tls) {
  74                 $string .= _("Also, the use of TLS may allow SquirrelMail to login.").'<br />';
  75             }
  76             $string .= _("Please contact your system administrator and report this error.");
  77             error_box($string);
  78             // display footer (closes html tags) and stop script execution
  79             $oTemplate->display('footer.tpl');
  80             exit;
  81         }
  82     }
  83 }
  84
  85 do_hook('login_cookie', $null);
  86
  87 $loginname_value = (sqGetGlobalVar('loginname', $loginname) ? htmlspecialchars($loginname) : '');
  88
  89 //FIXME: should be part of the template, not the core!
  90 /* Output the javascript onload function. */
  91 $header = "<script type=\"text/javascript\">\n" .
  92           "<!--\n".
  93           "  function squirrelmail_loginpage_onload() {\n".
  94           "    var textElements = 0;\n".
  95           "    for (i = 0; i < document.forms[0].elements.length; i++) {\n".
  96           "      if (document.forms[0].elements[i].type == \"text\" || document.forms[0].elements[i].type == \"password\") {\n".
  97           "        textElements++;\n".
  98           "        if (textElements == " . (isset($loginname) ? 2 : 1) . ") {\n".
  99           "          document.forms[0].elements[i].focus();\n".
 100           "          break;\n".
 101           "        }\n".
 102           "      }\n".
 103           "    }\n".
 104           "  }\n".
 105           "// -->\n".
 106           "</script>\n";
 107
 108 if (@file_exists($theme[$theme_default]['PATH']))
 109    @include ($theme[$theme_default]['PATH']);
 110
 111 if (! isset($color) || ! is_array($color)) {
 112     // Add default color theme, if theme loading fails
 113     $color = array();
 114     $color[0]  = '#dcdcdc';  /* light gray    TitleBar               */
 115     $color[1]  = '#800000';  /* red                                  */
 116     $color[2]  = '#cc0000';  /* light red     Warning/Error Messages */
 117     $color[4]  = '#ffffff';  /* white         Normal Background      */
 118     $color[7]  = '#0000cc';  /* blue          Links                  */
 119     $color[8]  = '#000000';  /* black         Normal text            */
 120 }
 121
 122 displayHtmlHeader( "$org_name - " . _("Login"), $header, FALSE );
 123
 124
 125
 126 /* If they don't have a logo, don't bother.. */
 127 $logo_str = '';
 128 if (isset($org_logo) && $org_logo) {
 129
 130     if (isset($org_logo_width) && is_numeric($org_logo_width) &&
 131      $org_logo_width>0) {
 132         $width = $org_logo_width;
 133     } else {
 134         $width = '';
 135     }
 136     if (isset($org_logo_height) && is_numeric($org_logo_height) &&
 137      $org_logo_height>0) {
 138         $height = $org_logo_height;
 139     } else {
 140         $height = '';
 141     }
 142
 143     $logo_str = create_image($org_logo, sprintf(_("%s Logo"), $org_name),
 144                              $width, $height, '', 'sqm_loginImage');
 145
 146 }
 147
 148 $sm_attribute_str = '';
 149 if (isset($hide_sm_attributions) && !$hide_sm_attributions) {
 150     $sm_attribute_str = _("SquirrelMail Webmail")."\n" .
 151                         _("By the SquirrelMail Project Team");
 152 }
 153
 154 if(sqgetGlobalVar('mailtodata', $mailtodata)) {
 155     $mailtofield = addHidden('mailtodata', $mailtodata);
 156 } else {
 157     $mailtofield = '';
 158 }
 159
 160 $password_field = addPwField('secretkey');
 161 $login_extra = addHidden('js_autodetect_results', SMPREF_JS_OFF).
 162                $mailtofield .
 163                addHidden('just_logged_in', '1');
 164
 165 session_write_close();
 166
 167 $oTemplate->assign('logo_str', $logo_str);
 168 $oTemplate->assign('logo_path', $org_logo);
 169 $oTemplate->assign('sm_attribute_str', $sm_attribute_str);
 170 // i18n: The %s represents the service provider's name
 171 $oTemplate->assign('org_name_str', sprintf (_("%s Login"), $org_name));
 172 // i18n: The %s represents the service provider's name
 173 $oTemplate->assign('org_logo_str', sprintf (_("The %s logo"), $org_name));
 174 $oTemplate->assign('login_field_value', $loginname_value);
 175 $oTemplate->assign('login_extra', $login_extra);
 176
 177 //FIXME: need to remove *ALL* HTML from this file!
 178 echo '<body onload="squirrelmail_loginpage_onload()">'."\n";
 179 echo '<form action="redirect.php" method="post" onsubmit="document.forms[0].js_autodetect_results.value='. SMPREF_JS_ON .'">'."\n";
 180 do_hook('login_top', $null);
 181
 182 $oTemplate->display('login.tpl');
 183
 184 //FIXME: need to remove *ALL* HTML from this file!
 185 echo "</form>\n";
 186 do_hook('login_bottom', $null);
 187
 188 // Turn off delayed error handling to make sure all errors are dumped.
 189 $oErrorHandler->setDelayedErrors(false);
 190
 191 $oTemplate->display('footer.tpl');