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Viewing file: swekey.auth.lib.php (9.01 KB) -rw-r--r--
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<?php
/**
 * @package Swekey
 */

/**
 * Checks Swekey authentication.
 */
function Swekey_auth_check()
{
    global $cfg;
    $confFile = $cfg['Server']['auth_swekey_config'];

    if (! isset($_SESSION['SWEKEY'])) {
        $_SESSION['SWEKEY'] = array();
    }

    $_SESSION['SWEKEY']['ENABLED'] = (! empty($confFile) && file_exists($confFile));

    // Load the swekey.conf file the first time
    if ($_SESSION['SWEKEY']['ENABLED'] && empty($_SESSION['SWEKEY']['CONF_LOADED'])) {
        $_SESSION['SWEKEY']['CONF_LOADED'] = true;
        $_SESSION['SWEKEY']['VALID_SWEKEYS'] = array();
        $valid_swekeys = explode("\n", @file_get_contents($confFile));
        foreach ($valid_swekeys as $line) {
            if (preg_match("/^[0-9A-F]{32}:.+$/", $line) != false)
            {
                $items = explode(":", $line);
                if (count($items) == 2)
                    $_SESSION['SWEKEY']['VALID_SWEKEYS'][$items[0]] = trim($items[1]);
            }
            else if (preg_match("/^[A-Z_]+=.*$/", $line) != false) {
                $items = explode("=", $line);
                $_SESSION['SWEKEY']['CONF_'.trim($items[0])] = trim($items[1]);
            }
        }

        // Set default values for settings
        if (! isset($_SESSION['SWEKEY']['CONF_SERVER_CHECK']))
            $_SESSION['SWEKEY']['CONF_SERVER_CHECK'] = "";
        if (! isset($_SESSION['SWEKEY']['CONF_SERVER_RNDTOKEN']))
            $_SESSION['SWEKEY']['CONF_SERVER_RNDTOKEN'] = "";
        if (! isset($_SESSION['SWEKEY']['CONF_SERVER_STATUS']))
             $_SESSION['SWEKEY']['CONF_SERVER_STATUS'] = "";
        if (! isset($_SESSION['SWEKEY']['CONF_CA_FILE']))
            $_SESSION['SWEKEY']['CONF_CA_FILE'] = "";
        if (! isset($_SESSION['SWEKEY']['CONF_ENABLE_TOKEN_CACHE']))
            $_SESSION['SWEKEY']['CONF_ENABLE_TOKEN_CACHE'] = true;
        if (! isset($_SESSION['SWEKEY']['CONF_DEBUG']))
               $_SESSION['SWEKEY']['CONF_DEBUG'] = false;
     }

    // check if a web key has been authenticated
    if ($_SESSION['SWEKEY']['ENABLED']) {
        if (empty($_SESSION['SWEKEY']['AUTHENTICATED_SWEKEY']))
           return false;
    }

    return true;
}


/**
 * Handle Swekey authentication error.
 */
function Swekey_auth_error()
{
    if (! isset($_SESSION['SWEKEY']))
        return null;

    if (! $_SESSION['SWEKEY']['ENABLED'])
        return null;

    require_once './libraries/auth/swekey/authentication.inc.php';

    ?>
    <script>
    function Swekey_GetValidKey()
    {
        var valids = "<?php
            foreach ($_SESSION['SWEKEY']['VALID_SWEKEYS'] as $key => $value)
                echo $key.',';
        ?>";
        var connected_keys = Swekey_ListKeyIds().split(",");
         for (i in connected_keys)
               if (connected_keys[i] != null && connected_keys[i].length == 32)
                if (valids.indexOf(connected_keys[i]) >= 0)
                   return connected_keys[i];


        if (connected_keys.length > 0)
               if (connected_keys[0].length == 32)
                  return "unknown_key_" + connected_keys[0];

        return "none";
    }

    var key = Swekey_GetValidKey();

    function timedCheck()
    {
        if (key != Swekey_GetValidKey())
        {
            window.location.search = "?swekey_reset";
        }
        else
            setTimeout("timedCheck()",1000);
    }

    setTimeout("timedCheck()",1000);
    </script>
     <?php

    if (! empty($_SESSION['SWEKEY']['AUTHENTICATED_SWEKEY']))
        return null;

    if (count($_SESSION['SWEKEY']['VALID_SWEKEYS']) == 0)
        return sprintf(__('File %s does not contain any key id'), $GLOBALS['cfg']['Server']['auth_swekey_config']);

    require_once "./libraries/auth/swekey/swekey.php";

    Swekey_SetCheckServer($_SESSION['SWEKEY']['CONF_SERVER_CHECK']);
    Swekey_SetRndTokenServer($_SESSION['SWEKEY']['CONF_SERVER_RNDTOKEN']);
    Swekey_SetStatusServer($_SESSION['SWEKEY']['CONF_SERVER_STATUS']);
    Swekey_EnableTokenCache($_SESSION['SWEKEY']['CONF_ENABLE_TOKEN_CACHE']);

    $caFile = $_SESSION['SWEKEY']['CONF_CA_FILE'];
    if (empty($caFile))
    {
        $caFile = __FILE__;
        $pos = strrpos($caFile, '/');
        if ($pos === false)
            $pos = strrpos($caFile, '\\'); // windows
        $caFile = substr($caFile, 0, $pos + 1).'musbe-ca.crt';
//        echo "\n<!-- $caFile -->\n";
//        if (file_exists($caFile))
//            echo "<!-- exists -->\n";
    }

    if (file_exists($caFile))
        Swekey_SetCAFile($caFile);
    else if (! empty($caFile) && (substr($_SESSION['SWEKEY']['CONF_SERVER_CHECK'], 0, 8) == "https://"))
        return "Internal Error: CA File $caFile not found";

    $result = null;
    $swekey_id = $_GET['swekey_id'];
    $swekey_otp = $_GET['swekey_otp'];

    if (isset($swekey_id)) {
        unset($_SESSION['SWEKEY']['AUTHENTICATED_SWEKEY']);
        if (! isset($_SESSION['SWEKEY']['RND_TOKEN'])) {
            unset($swekey_id);
        }
        else {
            if (strlen($swekey_id) == 32) {
                $res = Swekey_CheckOtp($swekey_id, $_SESSION['SWEKEY']['RND_TOKEN'], $swekey_otp);
                unset($_SESSION['SWEKEY']['RND_TOKEN']);
                if (! $res) {
                    $result = __('Hardware authentication failed') . ' (' . Swekey_GetLastError() . ')';
                }
                else {
                    $_SESSION['SWEKEY']['AUTHENTICATED_SWEKEY'] = $swekey_id;
                    $_SESSION['SWEKEY']['FORCE_USER'] = $_SESSION['SWEKEY']['VALID_SWEKEYS'][$swekey_id];
                    return null;
                }
            }
            else {
                $result = __('No valid authentication key plugged');
                if ($_SESSION['SWEKEY']['CONF_DEBUG'])
                {
                    $result .= "<br>" . htmlspecialchars($swekey_id);
                }
                unset($_SESSION['SWEKEY']['CONF_LOADED']); // reload the conf file
             }
        }
    }
    else
        unset($_SESSION['SWEKEY']);

    $_SESSION['SWEKEY']['RND_TOKEN'] = Swekey_GetFastRndToken();
    if (strlen($_SESSION['SWEKEY']['RND_TOKEN']) != 64) {
        $result = __('Hardware authentication failed') . ' (' . Swekey_GetLastError() . ')';
        unset($_SESSION['SWEKEY']['CONF_LOADED']); // reload the conf file
    }

    if (! isset($swekey_id)) {
        ?>
        <script>
        if (key.length != 32)
        {
            window.location.search="?swekey_id=" + key + "&token=<?php echo $_SESSION[' PMA_token ']; ?>";
        }
        else
        {
            var url = "" + window.location;
            if (url.indexOf("?") > 0)
                url = url.substr(0, url.indexOf("?"));
            Swekey_SetUnplugUrl(key, "pma_login", url + "?session_to_unset=<?php echo session_id();?>&token=<?php echo $_SESSION[' PMA_token ']; ?>");
             var otp = Swekey_GetOtp(key, <?php echo '"'.$_SESSION['SWEKEY']['RND_TOKEN'].'"';?>);
            window.location.search="?swekey_id=" + key + "&swekey_otp=" + otp + "&token=<?php echo $_SESSION[' PMA_token ']; ?>";
        }
        </script>
        <?php
        return __('Authenticating...');
    }

    return $result;
}


/**
 * Perform login using Swekey.
 */
function Swekey_login($input_name, $input_go)
{
    $swekeyErr = Swekey_auth_error();
    if ($swekeyErr != null) {
        PMA_Message::error($swekeyErr)->display();
        if ($GLOBALS['error_handler']->hasDisplayErrors()) {
            echo '<div>';
            $GLOBALS['error_handler']->dispErrors();
            echo '</div>';
        }
    }

    if (isset($_SESSION['SWEKEY']) && $_SESSION['SWEKEY']['ENABLED']) {
        echo '<script type="text/javascript">';
        if (empty($_SESSION['SWEKEY']['FORCE_USER']))
            echo 'var user = null;';
        else
           echo 'var user = "'.$_SESSION['SWEKEY']['FORCE_USER'].'";';

        ?>
            function open_swekey_site()
            {
                window.open("<?php echo PMA_linkURL('http://phpmyadmin.net/auth_key'); ?>");
            }

            var input_username = document.getElementById("<?php echo $input_name; ?>");
            var input_go = document.getElementById("<?php echo $input_go; ?>");
            var swekey_status = document.createElement('img');
            swekey_status.setAttribute('onClick', 'open_swekey_site()');
            swekey_status.setAttribute('style', 'width:8px; height:16px; border:0px; vspace:0px; hspace:0px; frameborder:no');
            if (user == null)
            {
                swekey_status.setAttribute('src', 'http://artwork.swekey.com/unplugged-8x16.png');
                //swekey_status.setAttribute('title', 'No swekey plugged');
                input_go.disabled = true;
            }
            else
            {
                swekey_status.setAttribute('src', 'http://artwork.swekey.com/plugged-8x16.png');
                //swekey_status.setAttribute('title', 'swekey plugged');
                input_username.value = user;
            }
             input_username.readOnly = true;

            if (input_username.nextSibling == null)
                input_username.parentNode.appendChild(swekey_status);
            else
                input_username.parentNode.insertBefore(swekey_status, input_username.nextSibling);

        <?php
        echo '</script>';
    }
}

if (!empty($_GET['session_to_unset']))
{
    session_write_close();
    session_id($_GET['session_to_unset']);
    session_start();
    $_SESSION = array();
    session_write_close();
    session_destroy();
    exit;
}

if (isset($_GET['swekey_reset']))
{
    unset($_SESSION['SWEKEY']);
}

?>
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