5c8d9483b3
git-svn-id: https://adminer.svn.sourceforge.net/svnroot/adminer/trunk@1332 7c3ca157-0c34-0410-bff1-cbf682f78f5c
90 lines
4.1 KiB
PHP
90 lines
4.1 KiB
PHP
<?php
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if (isset($_POST["server"])) {
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session_regenerate_id(); // defense against session fixation
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$_SESSION["usernames"][$_POST["server"]] = $_POST["username"];
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$_SESSION["passwords"][$_POST["server"]] = $_POST["password"];
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if ($_POST["permanent"]) {
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cookie("adminer_permanent",
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base64_encode($_POST["server"])
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. ":" . base64_encode($_POST["username"])
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. ":" . base64_encode(encrypt_string($_POST["password"], $adminer->permanentLogin()))
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);
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}
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if (count($_POST) == ($_POST["permanent"] ? 4 : 3)) { // 3 - server, username, password
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$location = ((string) $_GET["server"] === $_POST["server"] ? remove_from_uri(session_name()) : preg_replace('~^([^?]*).*~', '\\1', ME) . ($_POST["server"] != "" ? '?server=' . urlencode($_POST["server"]) : ''));
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if (SID_FORM) {
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$pos = strpos($location, '?');
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$location = ($pos ? substr_replace($location, SID . "&", $pos + 1, 0) : "$location?" . SID);
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}
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redirect($location);
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}
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$_GET["server"] = $_POST["server"]; //! used also in ME
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} elseif ($_POST["logout"]) {
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$token = $_SESSION["tokens"][$_GET["server"]];
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if ($token && $_POST["token"] != $token) {
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page_header(lang('Logout'), lang('Invalid CSRF token. Send the form again.'));
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page_footer("db");
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exit;
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} else {
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foreach (array("usernames", "passwords", "databases", "tokens", "history") as $val) {
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unset($_SESSION[$val][$_GET["server"]]);
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}
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if (!isset($_SESSION["passwords"])) { // don't require login to logout
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$_SESSION["passwords"] = array();
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}
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cookie("adminer_permanent", "");
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redirect(substr(ME, 0, -1), lang('Logout successful.'));
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}
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} elseif ($_COOKIE["adminer_permanent"] && !isset($_SESSION["usernames"][$_GET["server"]])) {
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list($server, $username, $cipher) = array_map('base64_decode', explode(":", $_COOKIE["adminer_permanent"]));
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if (($_GET["server"] == "" && !$_POST) || $server == $_GET["server"]) {
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session_regenerate_id(); // defense against session fixation
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$_SESSION["usernames"][$server] = $username;
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$_SESSION["passwords"][$server] = decrypt_string($cipher, $adminer->permanentLogin());
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if ($server != $_GET["server"]) {
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redirect(preg_replace('~^([^?]*).*~', '\\1', ME) . '?server=' . urlencode($server));
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}
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}
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}
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function auth_error($exception = null) {
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global $connection, $adminer;
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$session_name = session_name();
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$username = $_SESSION["usernames"][$_GET["server"]];
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unset($_SESSION["usernames"][$_GET["server"]]);
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page_header(lang('Login'), (isset($username) ? h($exception ? $exception->getMessage() : (is_string($connection) ? $connection : lang('Invalid credentials.')))
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: (!$_COOKIE[$session_name] && $_GET[$session_name] && ini_get("session.use_only_cookies") ? lang('Session support must be enabled.')
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: (($_COOKIE[$session_name] || $_GET[$session_name]) && !isset($_SESSION["passwords"]) ? lang('Session expired, please login again.')
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: ""))), null);
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echo "<form action='' method='post'>\n";
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$adminer->loginForm($username);
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echo "<div>";
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hidden_fields($_POST, array("server", "username", "password")); // expired session
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echo "</div>\n";
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echo "</form>\n";
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page_footer("auth");
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}
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$username = &$_SESSION["usernames"][$_GET["server"]];
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if (!isset($username)) {
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$username = $_GET["username"]; // default username can be passed in URL
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}
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$connection = (isset($username) ? connect() : '');
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if (is_string($connection) || !$adminer->login($username, $_SESSION["passwords"][$_GET["server"]])) {
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auth_error();
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exit;
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}
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unset($username);
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if (!$_SESSION["tokens"][$_GET["server"]]) {
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$_SESSION["tokens"][$_GET["server"]] = rand(1, 1e6); // defense against cross-site request forgery
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}
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if (isset($_POST["server"]) && $_POST["token"]) {
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$_POST["token"] = $_SESSION["tokens"][$_GET["server"]];
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}
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$token = $_SESSION["tokens"][$_GET["server"]]; ///< @var string CSRF protection
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$error = ($_POST ///< @var string
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? ($_POST["token"] == $token ? "" : lang('Invalid CSRF token. Send the form again.'))
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: ($_SERVER["REQUEST_METHOD"] != "POST" ? "" : lang('Too big POST data. Reduce the data or increase the %s configuration directive.', '"post_max_size"')) // posted form with no data means that post_max_size exceeded because Adminer always sends token at least
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);
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