6117ad5cef
This makes the comparison happen in constant time and makes it impossible to use it to guess stored usernames. Signed-off-by: Michal Čihař <michal@cihar.com>
851 lines
27 KiB
PHP
851 lines
27 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Cookie Authentication plugin for phpMyAdmin
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*
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* @package PhpMyAdmin-Authentication
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* @subpackage Cookie
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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/* Get the authentication interface */
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require_once 'libraries/plugins/AuthenticationPlugin.class.php';
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/**
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* Remember where to redirect the user
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* in case of an expired session.
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*/
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if (! empty($_REQUEST['target'])) {
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$GLOBALS['target'] = $_REQUEST['target'];
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} else if (PMA_getenv('SCRIPT_NAME')) {
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$GLOBALS['target'] = basename(PMA_getenv('SCRIPT_NAME'));
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}
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/**
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* Initialization
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* Store the initialization vector because it will be needed for
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* further decryption. I don't think necessary to have one iv
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* per server so I don't put the server number in the cookie name.
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*/
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if (function_exists('mcrypt_encrypt')) {
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if (empty($_COOKIE['pma_mcrypt_iv'])
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|| ! ($iv = base64_decode($_COOKIE['pma_mcrypt_iv'], true))
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) {
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srand((double) microtime() * 1000000);
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$td = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
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if ($td === false) {
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PMA_fatalError(__('Failed to use Blowfish from mcrypt!'));
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}
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$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
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$GLOBALS['PMA_Config']->setCookie(
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'pma_mcrypt_iv',
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base64_encode($iv)
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);
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}
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}
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/**
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* Handles the cookie authentication method
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*
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* @package PhpMyAdmin-Authentication
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*/
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class AuthenticationCookie extends AuthenticationPlugin
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{
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/**
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* Displays authentication form
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*
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* this function MUST exit/quit the application
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*
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* @global string the last connection error
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*
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* @return void
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*/
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public function auth()
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{
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global $conn_error;
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$response = PMA_Response::getInstance();
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if ($response->isAjax()) {
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$response->isSuccess(false);
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$login_link = '<br /><br />[ ' .
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sprintf(
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'<a href="%s" class="ajax login-link">%s</a>',
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$GLOBALS['cfg']['PmaAbsoluteUri'],
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__('Log in')
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)
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. ' ]';
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if (! empty($conn_error)) {
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$conn_error .= $login_link;
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$response->addJSON(
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'message',
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PMA_Message::error(
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$conn_error
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)
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);
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} else {
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$response->addJSON(
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'message',
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PMA_Message::error(
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__('Your session has expired. Please log in again.') .
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$login_link
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)
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);
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}
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exit;
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}
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/* Perform logout to custom URL */
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if (! empty($_REQUEST['old_usr'])
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&& ! empty($GLOBALS['cfg']['Server']['LogoutURL'])
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) {
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PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['LogoutURL']);
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exit;
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}
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// No recall if blowfish secret is not configured as it would produce
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// garbage
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if ($GLOBALS['cfg']['LoginCookieRecall']
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&& ! empty($GLOBALS['cfg']['blowfish_secret'])
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) {
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$default_user = $GLOBALS['PHP_AUTH_USER'];
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$default_server = $GLOBALS['pma_auth_server'];
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$autocomplete = '';
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} else {
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$default_user = '';
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$default_server = '';
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// skip the IE autocomplete feature.
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$autocomplete = ' autocomplete="off"';
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}
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$cell_align = ($GLOBALS['text_dir'] == 'ltr') ? 'left' : 'right';
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$response->getFooter()->setMinimal();
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$header = $response->getHeader();
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$header->setBodyId('loginform');
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$header->setTitle('phpMyAdmin');
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$header->disableMenu();
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$header->disableWarnings();
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if (file_exists(CUSTOM_HEADER_FILE)) {
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include CUSTOM_HEADER_FILE;
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}
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echo '
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<div class="container">
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<a href="';
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echo PMA_linkURL('https://www.phpmyadmin.net/');
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echo '" target="_blank" class="logo">';
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$logo_image = $GLOBALS['pmaThemeImage'] . 'logo_right.png';
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if (@file_exists($logo_image)) {
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echo '<img src="' . $logo_image
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. '" id="imLogo" name="imLogo" alt="phpMyAdmin" border="0" />';
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} else {
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echo '<img name="imLogo" id="imLogo" src="'
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. $GLOBALS['pmaThemeImage'] . 'pma_logo.png' . '" '
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. 'border="0" width="88" height="31" alt="phpMyAdmin" />';
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}
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echo '</a>
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<h1>';
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echo sprintf(
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__('Welcome to %s'),
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'<bdo dir="ltr" lang="en">phpMyAdmin</bdo>'
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);
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echo "</h1>";
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// Show error message
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if (! empty($conn_error)) {
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PMA_Message::rawError($conn_error)->display();
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}
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echo "<noscript>\n";
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PMA_message::error(
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__("Javascript must be enabled past this point")
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)->display();
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echo "</noscript>\n";
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echo "<div class='hide js-show'>";
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// Displays the languages form
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if (empty($GLOBALS['cfg']['Lang'])) {
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include_once './libraries/display_select_lang.lib.php';
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// use fieldset, don't show doc link
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echo PMA_getLanguageSelectorHtml(true, false);
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}
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echo '</div>
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<br />
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<!-- Login form -->
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<form method="post" action="index.php" name="login_form"' . $autocomplete .
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' class="disableAjax login hide js-show">
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<fieldset>
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<legend>';
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echo __('Log in');
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echo PMA_Util::showDocu('index');
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echo '</legend>';
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if ($GLOBALS['cfg']['AllowArbitraryServer']) {
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echo '
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<div class="item">
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<label for="input_servername" title="';
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echo __(
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'You can enter hostname/IP address and port separated by space.'
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);
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echo '">';
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echo __('Server:');
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echo '</label>
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<input type="text" name="pma_servername" id="input_servername"';
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echo ' value="';
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echo htmlspecialchars($default_server);
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echo '" size="24" class="textfield" title="';
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echo __(
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'You can enter hostname/IP address and port separated by space.'
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); echo '" />
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</div>';
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}
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echo '<div class="item">
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<label for="input_username">' . __('Username:') . '</label>
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<input type="text" name="pma_username" id="input_username" '
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. 'value="' . htmlspecialchars($default_user) . '" size="24"'
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. ' class="textfield"/>
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</div>
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<div class="item">
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<label for="input_password">' . __('Password:') . '</label>
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<input type="password" name="pma_password" id="input_password"'
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. ' value="" size="24" class="textfield" />
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</div>';
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if (count($GLOBALS['cfg']['Servers']) > 1) {
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echo '<div class="item">
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<label for="select_server">' . __('Server Choice') .':</label>
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<select name="server" id="select_server"';
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if ($GLOBALS['cfg']['AllowArbitraryServer']) {
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echo ' onchange="document.forms[\'login_form\'].'
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. 'elements[\'pma_servername\'].value = \'\'" ';
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}
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echo '>';
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include_once './libraries/select_server.lib.php';
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echo PMA_selectServer(false, false);
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echo '</select></div>';
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} else {
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echo ' <input type="hidden" name="server" value="'
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. $GLOBALS['server'] . '" />';
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} // end if (server choice)
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echo '</fieldset>
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<fieldset class="tblFooters">
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<input value="' . __('Go') . '" type="submit" id="input_go" />';
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$_form_params = array();
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if (! empty($GLOBALS['target'])) {
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$_form_params['target'] = $GLOBALS['target'];
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}
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if (! empty($GLOBALS['db'])) {
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$_form_params['db'] = $GLOBALS['db'];
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}
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if (! empty($GLOBALS['table'])) {
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$_form_params['table'] = $GLOBALS['table'];
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}
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// do not generate a "server" hidden field as we want the "server"
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// drop-down to have priority
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echo PMA_generate_common_hidden_inputs($_form_params, '', 0, 'server');
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echo '</fieldset>
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</form>';
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if ($GLOBALS['error_handler']->hasDisplayErrors()) {
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echo '<div>';
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$GLOBALS['error_handler']->dispErrors();
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echo '</div>';
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}
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echo '</div>';
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if (file_exists(CUSTOM_FOOTER_FILE)) {
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include CUSTOM_FOOTER_FILE;
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}
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exit;
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}
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/**
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* Gets advanced authentication settings
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*
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* this function DOES NOT check authentication - it just checks/provides
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* authentication credentials required to connect to the MySQL server
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* usually with PMA_DBI_connect()
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*
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* it returns false if something is missing - which usually leads to
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* auth() which displays login form
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*
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* it returns true if all seems ok which usually leads to auth_set_user()
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*
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* it directly switches to authFails() if user inactivity timout is reached
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*
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* @todo AllowArbitraryServer on does not imply that the user wants an
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* arbitrary server, or? so we should also check if this is filled
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* and not only if allowed
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*
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* @return boolean whether we get authentication settings or not
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*/
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public function authCheck()
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{
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// Initialization
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/**
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* @global $GLOBALS['pma_auth_server'] the user provided server to
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* connect to
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*/
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$GLOBALS['pma_auth_server'] = '';
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$GLOBALS['PHP_AUTH_USER'] = $GLOBALS['PHP_AUTH_PW'] = '';
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$GLOBALS['from_cookie'] = false;
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if (defined('PMA_CLEAR_COOKIES')) {
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foreach ($GLOBALS['cfg']['Servers'] as $key => $val) {
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$GLOBALS['PMA_Config']->removeCookie('pmaAuth-' . $key);
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$GLOBALS['PMA_Config']->removeCookie('pmaUser-' . $key);
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}
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return false;
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}
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if (! empty($_REQUEST['old_usr'])) {
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// The user wants to be logged out
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// -> delete his choices that were stored in session
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// according to the PHP manual we should do this before the destroy:
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//$_SESSION = array();
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session_destroy();
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// -> delete password cookie(s)
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if ($GLOBALS['cfg']['LoginCookieDeleteAll']) {
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foreach ($GLOBALS['cfg']['Servers'] as $key => $val) {
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$GLOBALS['PMA_Config']->removeCookie('pmaAuth-' . $key);
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if (isset($_COOKIE['pmaAuth-' . $key])) {
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unset($_COOKIE['pmaAuth-' . $key]);
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}
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}
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} else {
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$GLOBALS['PMA_Config']->removeCookie(
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'pmaAuth-' . $GLOBALS['server']
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);
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if (isset($_COOKIE['pmaAuth-' . $GLOBALS['server']])) {
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unset($_COOKIE['pmaAuth-' . $GLOBALS['server']]);
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}
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}
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}
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if (! empty($_REQUEST['pma_username'])) {
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// The user just logged in
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$GLOBALS['PHP_AUTH_USER'] = PMA_sanitizeMySQLUser($_REQUEST['pma_username']);
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$GLOBALS['PHP_AUTH_PW'] = empty($_REQUEST['pma_password'])
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? ''
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: $_REQUEST['pma_password'];
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if ($GLOBALS['cfg']['AllowArbitraryServer']
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&& isset($_REQUEST['pma_servername'])
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) {
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$GLOBALS['pma_auth_server'] = PMA_sanitizeMySQLHost($_REQUEST['pma_servername']);
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}
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return true;
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}
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// At the end, try to set the $GLOBALS['PHP_AUTH_USER']
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// and $GLOBALS['PHP_AUTH_PW'] variables from cookies
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// check cookies
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if (empty($_COOKIE['pmaUser-' . $GLOBALS['server']])) {
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return false;
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}
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$GLOBALS['PHP_AUTH_USER'] = $this->cookieDecrypt(
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$_COOKIE['pmaUser-' . $GLOBALS['server']],
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$this->_getEncryptionSecret()
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);
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// user was never logged in since session start
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if (empty($_SESSION['last_access_time'])) {
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return false;
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}
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// User inactive too long
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$last_access_time = time() - $GLOBALS['cfg']['LoginCookieValidity'];
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if ($_SESSION['last_access_time'] < $last_access_time
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) {
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PMA_Util::cacheUnset('is_create_db_priv', true);
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PMA_Util::cacheUnset('is_process_priv', true);
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PMA_Util::cacheUnset('is_reload_priv', true);
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PMA_Util::cacheUnset('db_to_create', true);
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PMA_Util::cacheUnset('dbs_where_create_table_allowed', true);
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$GLOBALS['no_activity'] = true;
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$this->authFails();
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exit;
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}
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// check password cookie
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if (empty($_COOKIE['pmaAuth-' . $GLOBALS['server']])) {
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return false;
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}
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$auth_data = json_decode(
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$this->cookieDecrypt(
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$_COOKIE['pmaAuth-' . $GLOBALS['server']],
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$this->_getSessionEncryptionSecret()
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),
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true
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);
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if (! is_array($auth_data) || ! isset($auth_data['password'])) {
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return false;
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}
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$GLOBALS['PHP_AUTH_PW'] = $auth_data['password'];
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if ($GLOBALS['cfg']['AllowArbitraryServer'] && ! empty($auth_data['server'])) {
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$GLOBALS['pma_auth_server'] = $auth_data['server'];
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}
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$GLOBALS['from_cookie'] = true;
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return true;
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}
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/**
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* Set the user and password after last checkings if required
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*
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* @return boolean always true
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*/
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public function authSetUser()
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{
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global $cfg;
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// Ensures valid authentication mode, 'only_db', bookmark database and
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// table names and relation table name are used
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if (! hash_equals($cfg['Server']['user'], $GLOBALS['PHP_AUTH_USER'])) {
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foreach ($cfg['Servers'] as $idx => $current) {
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if ($current['host'] == $cfg['Server']['host']
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&& $current['port'] == $cfg['Server']['port']
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&& $current['socket'] == $cfg['Server']['socket']
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&& $current['ssl'] == $cfg['Server']['ssl']
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&& $current['connect_type'] == $cfg['Server']['connect_type']
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&& hash_equals($current['user'], $GLOBALS['PHP_AUTH_USER'])
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) {
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$GLOBALS['server'] = $idx;
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$cfg['Server'] = $current;
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break;
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}
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} // end foreach
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} // end if
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if ($GLOBALS['cfg']['AllowArbitraryServer']
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&& ! empty($GLOBALS['pma_auth_server'])
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) {
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/* Allow to specify 'host port' */
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$parts = explode(' ', $GLOBALS['pma_auth_server']);
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if (count($parts) == 2) {
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$tmp_host = $parts[0];
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$tmp_port = $parts[1];
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} else {
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$tmp_host = $GLOBALS['pma_auth_server'];
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$tmp_port = '';
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}
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if ($cfg['Server']['host'] != $GLOBALS['pma_auth_server']) {
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$cfg['Server']['host'] = $tmp_host;
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if (! empty($tmp_port)) {
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$cfg['Server']['port'] = $tmp_port;
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}
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}
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unset($tmp_host, $tmp_port, $parts);
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}
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$cfg['Server']['user'] = $GLOBALS['PHP_AUTH_USER'];
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$cfg['Server']['password'] = $GLOBALS['PHP_AUTH_PW'];
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// Avoid showing the password in phpinfo()'s output
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unset($GLOBALS['PHP_AUTH_PW']);
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unset($_SERVER['PHP_AUTH_PW']);
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$_SESSION['last_access_time'] = time();
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}
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/**
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* Stores user credentials after successful login.
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*
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* @return void
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*/
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public function storeUserCredentials()
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{
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global $cfg;
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// Name and password cookies need to be refreshed each time
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// Duration = one month for username
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$this->storeUsernameCookie($cfg['Server']['user']);
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// Duration = as configured
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$this->storePasswordCookie($cfg['Server']['password']);
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// Set server cookies if required (once per session) and, in this case,
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// force reload to ensure the client accepts cookies
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if (! $GLOBALS['from_cookie']) {
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// URL where to go:
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$redirect_url = $cfg['PmaAbsoluteUri'] . 'index.php';
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// any parameters to pass?
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$url_params = array();
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if (strlen($GLOBALS['db'])) {
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$url_params['db'] = $GLOBALS['db'];
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}
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if (strlen($GLOBALS['table'])) {
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$url_params['table'] = $GLOBALS['table'];
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}
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// any target to pass?
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if (! empty($GLOBALS['target'])
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&& $GLOBALS['target'] != 'index.php'
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) {
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$url_params['target'] = $GLOBALS['target'];
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}
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/**
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* Clear user cache.
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*/
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PMA_Util::clearUserCache();
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PMA_Response::getInstance()->disable();
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PMA_sendHeaderLocation(
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$redirect_url . PMA_generate_common_url($url_params, '&'),
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true
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);
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exit;
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} // end if
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return true;
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}
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/**
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* Stores username in a cookie.
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*
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* @param string $username User name
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*
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* @return void
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*/
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public function storeUsernameCookie($username)
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{
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// Name and password cookies need to be refreshed each time
|
|
// Duration = one month for username
|
|
$GLOBALS['PMA_Config']->setCookie(
|
|
'pmaUser-' . $GLOBALS['server'],
|
|
$this->cookieEncrypt(
|
|
$username,
|
|
$this->_getEncryptionSecret()
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Stores password in a cookie.
|
|
*
|
|
* @param string $password Password
|
|
*
|
|
* @return void
|
|
*/
|
|
public function storePasswordCookie($password)
|
|
{
|
|
$payload = array('password' => $password);
|
|
if ($GLOBALS['cfg']['AllowArbitraryServer'] && ! empty($GLOBALS['pma_auth_server'])) {
|
|
$payload['server'] = $GLOBALS['pma_auth_server'];
|
|
}
|
|
// Duration = as configured
|
|
$GLOBALS['PMA_Config']->setCookie(
|
|
'pmaAuth-' . $GLOBALS['server'],
|
|
$this->cookieEncrypt(
|
|
json_encode($payload),
|
|
$this->_getSessionEncryptionSecret()
|
|
),
|
|
null,
|
|
$GLOBALS['cfg']['LoginCookieStore']
|
|
);
|
|
}
|
|
|
|
/**
|
|
* User is not allowed to login to MySQL -> authentication failed
|
|
*
|
|
* prepares error message and switches to auth() which display the error
|
|
* and the login form
|
|
*
|
|
* this function MUST exit/quit the application,
|
|
* currently doen by call to auth()
|
|
*
|
|
* @return void
|
|
*/
|
|
public function authFails()
|
|
{
|
|
global $conn_error;
|
|
|
|
// Deletes password cookie and displays the login form
|
|
$GLOBALS['PMA_Config']->removeCookie('pmaAuth-' . $GLOBALS['server']);
|
|
|
|
if (! empty($GLOBALS['login_without_password_is_forbidden'])) {
|
|
$conn_error = __(
|
|
'Login without a password is forbidden by configuration'
|
|
. ' (see AllowNoPassword)'
|
|
);
|
|
} elseif (! empty($GLOBALS['allowDeny_forbidden'])) {
|
|
$conn_error = __('Access denied');
|
|
} elseif (! empty($GLOBALS['no_activity'])) {
|
|
$conn_error = sprintf(
|
|
__('No activity within %s seconds; please log in again'),
|
|
$GLOBALS['cfg']['LoginCookieValidity']
|
|
);
|
|
} elseif (PMA_DBI_getError()) {
|
|
$conn_error = '#' . $GLOBALS['errno'] . ' '
|
|
. __('Cannot log in to the MySQL server');
|
|
} else {
|
|
$conn_error = __('Cannot log in to the MySQL server');
|
|
}
|
|
|
|
// needed for PHP-CGI (not need for FastCGI or mod-php)
|
|
header('Cache-Control: no-store, no-cache, must-revalidate');
|
|
header('Pragma: no-cache');
|
|
|
|
$this->auth();
|
|
}
|
|
|
|
/**
|
|
* Returns blowfish secret or generates one if needed.
|
|
*
|
|
* @return string
|
|
*/
|
|
private function _getEncryptionSecret()
|
|
{
|
|
if (empty($GLOBALS['cfg']['blowfish_secret'])) {
|
|
return $this->_getSessionEncryptionSecret();
|
|
} else {
|
|
return $GLOBALS['cfg']['blowfish_secret'];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns blowfish secret or generates one if needed.
|
|
*
|
|
* @return string
|
|
*/
|
|
private function _getSessionEncryptionSecret()
|
|
{
|
|
if (empty($_SESSION['encryption_key'])) {
|
|
if ($this->_useOpenSSL()) {
|
|
$_SESSION['encryption_key'] = openssl_random_pseudo_bytes(32);
|
|
} else {
|
|
include_once "./libraries/phpseclib/Crypt/Random.php";
|
|
$_SESSION['encryption_key'] = crypt_random_string(32);
|
|
}
|
|
}
|
|
return $_SESSION['encryption_key'];
|
|
}
|
|
|
|
/**
|
|
* Checks whether we should use openssl for encryption.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
private function _useOpenSSL()
|
|
{
|
|
return (
|
|
function_exists('openssl_encrypt')
|
|
&& function_exists('openssl_decrypt')
|
|
&& function_exists('openssl_random_pseudo_bytes')
|
|
&& PHP_VERSION_ID >= 50304
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Concatenates secret in order to make it 16 bytes log
|
|
*
|
|
* This doesn't add any security, just ensures the secret
|
|
* is long enough by copying it.
|
|
*
|
|
* @param string $secret Original secret
|
|
*
|
|
* @return string
|
|
*/
|
|
public function enlargeSecret($secret)
|
|
{
|
|
while (strlen($secret) < 16) {
|
|
$secret .= $secret;
|
|
}
|
|
return substr($secret, 0, 16);
|
|
}
|
|
|
|
/**
|
|
* Derives MAC secret from encryption secret.
|
|
*
|
|
* @param string $secret the secret
|
|
*
|
|
* @return string the MAC secret
|
|
*/
|
|
public function getMACSecret($secret)
|
|
{
|
|
// Grab first part, up to 16 chars
|
|
// The MAC and AES secrets can overlap if original secret is short
|
|
$length = strlen($secret);
|
|
if ($length > 16) {
|
|
return substr($secret, 0, 16);
|
|
}
|
|
return $this->enlargeSecret(
|
|
$length == 1 ? $secret : substr($secret, 0, -1)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Derives AES secret from encryption secret.
|
|
*
|
|
* @param string $secret the secret
|
|
*
|
|
* @return string the AES secret
|
|
*/
|
|
public function getAESSecret($secret)
|
|
{
|
|
// Grab second part, up to 16 chars
|
|
// The MAC and AES secrets can overlap if original secret is short
|
|
$length = strlen($secret);
|
|
if ($length > 16) {
|
|
return substr($secret, -16);
|
|
}
|
|
return $this->enlargeSecret(
|
|
$length == 1 ? $secret : substr($secret, 1)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Encryption using openssl's AES or phpseclib's AES
|
|
* (phpseclib uses mcrypt when it is available)
|
|
*
|
|
* @param string $data original data
|
|
* @param string $secret the secret
|
|
*
|
|
* @return string the encrypted result
|
|
*/
|
|
public function cookieEncrypt($data, $secret)
|
|
{
|
|
$mac_secret = $this->getMACSecret($secret);
|
|
$aes_secret = $this->getAESSecret($secret);
|
|
$iv = $this->createIV();
|
|
if (! function_exists('mcrypt_encrypt')) {
|
|
/**
|
|
* This library uses mcrypt when available, so
|
|
* we could always call it instead of having an
|
|
* if/then/else logic, however the include_once
|
|
* call is costly
|
|
*/
|
|
include_once "./libraries/phpseclib/Crypt/AES.php";
|
|
$cipher = new Crypt_AES(CRYPT_AES_MODE_ECB);
|
|
$cipher->setIV($iv);
|
|
$cipher->setKey($aes_secret);
|
|
$result = base64_encode($cipher->encrypt($data));
|
|
} else {
|
|
$result = base64_encode(
|
|
mcrypt_encrypt(
|
|
MCRYPT_BLOWFISH,
|
|
$secret,
|
|
$data,
|
|
MCRYPT_MODE_CBC,
|
|
$iv
|
|
)
|
|
);
|
|
}
|
|
$iv = base64_encode($iv);
|
|
return json_encode(
|
|
array(
|
|
'iv' => $iv,
|
|
'mac' => hash_hmac('sha1', $iv . $result, $mac_secret),
|
|
'payload' => $result,
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Decryption using blowfish algorithm (mcrypt)
|
|
* or phpseclib's AES if mcrypt not available
|
|
*
|
|
* @param string $encdata encrypted data
|
|
* @param string $secret the secret
|
|
*
|
|
* @return string|bool original data, false on error
|
|
*/
|
|
public function cookieDecrypt($encdata, $secret)
|
|
{
|
|
$data = json_decode($encdata, true);
|
|
|
|
if (! is_array($data) || ! isset($data['mac']) || ! isset($data['iv']) || ! isset($data['payload'])
|
|
|| ! is_string($data['mac']) || ! is_string($data['iv']) || ! is_string($data['payload'])
|
|
) {
|
|
return false;
|
|
}
|
|
|
|
$mac_secret = $this->getMACSecret($secret);
|
|
$aes_secret = $this->getAESSecret($secret);
|
|
$newmac = hash_hmac('sha1', $data['iv'] . $data['payload'], $mac_secret);
|
|
|
|
if (! hash_equals($data['mac'], $newmac)) {
|
|
return false;
|
|
}
|
|
|
|
if (! function_exists('mcrypt_encrypt')) {
|
|
include_once "./libraries/phpseclib/Crypt/AES.php";
|
|
$cipher = new Crypt_AES(CRYPT_AES_MODE_ECB);
|
|
$cipher->setIV(base64_decode($data['iv']));
|
|
$cipher->setKey($aes_secret);
|
|
return $cipher->decrypt(base64_decode($data['payload']));
|
|
} else {
|
|
$decrypted = mcrypt_decrypt(
|
|
MCRYPT_BLOWFISH,
|
|
$secret,
|
|
base64_decode($data['payload']),
|
|
MCRYPT_MODE_CBC,
|
|
base64_decode($data['iv'])
|
|
);
|
|
return trim($decrypted);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns size of IV for encryption.
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getIVSize()
|
|
{
|
|
include_once "./libraries/phpseclib/Crypt/AES.php";
|
|
$cipher = new Crypt_AES(CRYPT_AES_MODE_ECB);
|
|
return $cipher->block_size;
|
|
}
|
|
|
|
/**
|
|
* Initialization
|
|
* Store the initialization vector because it will be needed for
|
|
* further decryption. I don't think necessary to have one iv
|
|
* per server so I don't put the server number in the cookie name.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function createIV()
|
|
{
|
|
if (function_exists('mcrypt_create_iv')) {
|
|
srand((double) microtime() * 1000000);
|
|
$td = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
|
|
if ($td === false) {
|
|
PMA_fatalError(__('Failed to use Blowfish from mcrypt!'));
|
|
}
|
|
return mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
|
|
} else {
|
|
include_once "./libraries/phpseclib/Crypt/Random.php";
|
|
return crypt_random_string(
|
|
$this->getIVSize()
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method is called when any PluginManager to which the observer
|
|
* is attached calls PluginManager::notify()
|
|
*
|
|
* @param SplSubject $subject The PluginManager notifying the observer
|
|
* of an update.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function update (SplSubject $subject)
|
|
{
|
|
}
|
|
}
|
