mirror of https://github.com/itflow-org/itflow
413 lines
17 KiB
PHP
413 lines
17 KiB
PHP
<?php
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// Enforce a Content Security Policy for security against cross-site scripting
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header("Content-Security-Policy: default-src 'self'");
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if (!file_exists('config.php')) {
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header("Location: setup.php");
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exit;
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}
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require_once "config.php";
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// Set Timezone
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require_once "inc_set_timezone.php";
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// Check if the application is configured for HTTPS-only access
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if ($config_https_only && (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] !== 'on') && (!isset($_SERVER['HTTP_X_FORWARDED_PROTO']) || $_SERVER['HTTP_X_FORWARDED_PROTO'] !== 'https')) {
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echo "Login is restricted as ITFlow defaults to HTTPS-only for enhanced security. To login using HTTP, modify the config.php file by setting config_https_only to false. However, this is strongly discouraged, especially when accessing from potentially unsafe networks like the internet.";
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exit;
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}
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require_once "functions.php";
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require_once "includes/rfc6238.php";
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// IP & User Agent for logging
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$session_ip = sanitizeInput(getIP());
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$session_user_agent = sanitizeInput($_SERVER['HTTP_USER_AGENT']);
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// Block brute force password attacks - check recent failed login attempts for this IP
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// Block access if more than 15 failed login attempts have happened in the last 10 minutes
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$row = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT COUNT(log_id) AS failed_login_count FROM logs WHERE log_ip = '$session_ip' AND log_type = 'Login' AND log_action = 'Failed' AND log_created_at > (NOW() - INTERVAL 10 MINUTE)"));
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$failed_login_count = intval($row['failed_login_count']);
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if ($failed_login_count >= 15) {
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// Logging
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logAction("Login", "Blocked", "$session_ip was blocked access to login due to IP lockout");
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// Inform user & quit processing page
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header("HTTP/1.1 429 Too Many Requests");
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exit("<h2>$config_app_name</h2>Your IP address has been blocked due to repeated failed login attempts. Please try again later. <br><br>This action has been logged.");
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}
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// Query Settings for company
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$sql_settings = mysqli_query($mysqli, "SELECT * FROM settings LEFT JOIN companies ON settings.company_id = companies.company_id WHERE settings.company_id = 1");
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$row = mysqli_fetch_array($sql_settings);
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// Company info
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$company_name = $row['company_name'];
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$company_logo = $row['company_logo'];
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$config_start_page = nullable_htmlentities($row['config_start_page']);
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$config_login_message = nullable_htmlentities($row['config_login_message']);
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// Mail
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$config_smtp_host = $row['config_smtp_host'];
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$config_smtp_port = intval($row['config_smtp_port']);
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$config_smtp_encryption = $row['config_smtp_encryption'];
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$config_smtp_username = $row['config_smtp_username'];
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$config_smtp_password = $row['config_smtp_password'];
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$config_mail_from_email = sanitizeInput($row['config_mail_from_email']);
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$config_mail_from_name = sanitizeInput($row['config_mail_from_name']);
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// Client Portal Enabled
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$config_client_portal_enable = intval($row['config_client_portal_enable']);
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// Login key (if setup)
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$config_login_key_required = $row['config_login_key_required'];
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$config_login_key_secret = $row['config_login_key_secret'];
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$config_login_remember_me_expire = intval($row['config_login_remember_me_expire']);
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// Login key verification
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// If no/incorrect 'key' is supplied, send to client portal instead
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if ($config_login_key_required) {
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if (!isset($_GET['key']) || $_GET['key'] !== $config_login_key_secret) {
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header("Location: portal");
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exit();
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}
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}
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// HTTP-Only cookies
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ini_set("session.cookie_httponly", true);
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// Tell client to only send cookie(s) over HTTPS
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if ($config_https_only || !isset($config_https_only)) {
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ini_set("session.cookie_secure", true);
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}
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// Handle POST login request
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if (isset($_POST['login'])) {
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// Sessions should start after the user has POSTed data
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session_start();
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// Passed login brute force check
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$email = sanitizeInput($_POST['email']);
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$password = $_POST['password'];
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$current_code = 0; // Default value
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if (isset($_POST['current_code'])) {
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$current_code = intval($_POST['current_code']);
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}
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$row = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT * FROM users LEFT JOIN user_settings on users.user_id = user_settings.user_id WHERE user_email = '$email' AND user_archived_at IS NULL AND user_status = 1 AND user_type = 1"));
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// Check password
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if ($row && password_verify($password, $row['user_password'])) {
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// User password correct (partial login)
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// Set temporary user variables
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$user_name = sanitizeInput($row['user_name']);
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$user_id = intval($row['user_id']);
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$session_user_id = $user_id; // to pass the user_id to logAction function
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$user_email = sanitizeInput($row['user_email']);
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$token = sanitizeInput($row['user_token']);
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$force_mfa = intval($row['user_config_force_mfa']);
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$user_role = intval($row['user_role']);
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$user_encryption_ciphertext = $row['user_specific_encryption_ciphertext'];
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$user_extension_key = $row['user_extension_key'];
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$mfa_is_complete = false; // Default to requiring MFA
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$extended_log = ''; // Default value
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if (empty($token)) {
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// MFA is not configured
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$mfa_is_complete = true;
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}
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// Validate MFA via a remember-me cookie
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if (isset($_COOKIE['rememberme'])) {
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// Get remember tokens less than $config_login_remember_me_days_expire days old
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$remember_tokens = mysqli_query($mysqli, "SELECT remember_token_token FROM remember_tokens WHERE remember_token_user_id = $user_id AND remember_token_created_at > (NOW() - INTERVAL $config_login_remember_me_expire DAY)");
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while ($row = mysqli_fetch_assoc($remember_tokens)) {
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if (hash_equals($row['remember_token_token'], $_COOKIE['rememberme'])) {
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$mfa_is_complete = true;
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$extended_log = 'with 2FA remember-me cookie';
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break;
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}
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}
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}
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// Validate MFA code
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if (!empty($current_code) && TokenAuth6238::verify($token, $current_code)) {
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$mfa_is_complete = true;
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$extended_log = 'with 2FA';
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}
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if ($mfa_is_complete) {
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// MFA Completed successfully
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// FULL LOGIN SUCCESS
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// Create a remember me token, if requested
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if (isset($_POST['remember_me'])) {
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// TODO: Record the UA and IP a token is generated from so that can be shown later on
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$newRememberToken = bin2hex(random_bytes(64));
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setcookie('rememberme', $newRememberToken, time() + 86400*$config_login_remember_me_expire, "/", null, true, true);
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mysqli_query($mysqli, "INSERT INTO remember_tokens SET remember_token_user_id = $user_id, remember_token_token = '$newRememberToken'");
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$extended_log .= ", generated a new remember-me token";
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}
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// Check this login isn't suspicious
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$sql_ip_prev_logins = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT COUNT(log_id) AS ip_previous_logins FROM logs WHERE log_type = 'Login' AND log_action = 'Success' AND log_ip = '$session_ip' AND log_user_id = $user_id"));
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$ip_previous_logins = sanitizeInput($sql_ip_prev_logins['ip_previous_logins']);
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$sql_ua_prev_logins = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT COUNT(log_id) AS ua_previous_logins FROM logs WHERE log_type = 'Login' AND log_action = 'Success' AND log_user_agent = '$session_user_agent' AND log_user_id = $user_id"));
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$ua_prev_logins = sanitizeInput($sql_ua_prev_logins['ua_previous_logins']);
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// Notify if both the user agent and IP are different
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if (!empty($config_smtp_host) && $ip_previous_logins == 0 && $ua_prev_logins == 0) {
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$subject = "$config_app_name new login for $user_name";
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$body = "Hi $user_name, <br><br>A recent successful login to your $config_app_name account was considered a little unusual. If this was you, you can safely ignore this email!<br><br>IP Address: $session_ip<br> User Agent: $session_user_agent <br><br>If you did not perform this login, your credentials may be compromised. <br><br>Thanks, <br>ITFlow";
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$data = [
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[
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'from' => $config_mail_from_email,
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'from_name' => $config_mail_from_name,
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'recipient' => $user_email,
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'recipient_name' => $user_name,
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'subject' => $subject,
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'body' => $body
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]
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];
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addToMailQueue($data);
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}
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// Logging
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logAction("Login", "Success", "$user_name successfully logged in $extended_log", 0, $user_id);
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// Session info
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$_SESSION['user_id'] = $user_id;
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$_SESSION['user_name'] = $user_name;
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$_SESSION['user_type'] = 1;
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$_SESSION['user_role'] = $user_role;
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$_SESSION['csrf_token'] = randomString(156);
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$_SESSION['logged'] = true;
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// Forcing MFA
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if ($force_mfa == 1 && $token == NULL) {
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$secretMFA = key32gen();
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$config_start_page = "post.php?enable_2fa_force&token=$secretMFA&csrf_token=$_SESSION[csrf_token]";
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}
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// Setup encryption session key
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if (isset($user_encryption_ciphertext)) {
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$site_encryption_master_key = decryptUserSpecificKey($user_encryption_ciphertext, $password);
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generateUserSessionKey($site_encryption_master_key);
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// Setup extension - currently unused
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//if (is_null($user_extension_key)) {
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// Extension cookie
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// Note: Browsers don't accept cookies with SameSite None if they are not HTTPS.
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//setcookie("user_extension_key", "$user_extension_key", ['path' => '/', 'secure' => true, 'httponly' => true, 'samesite' => 'None']);
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// Set PHP session in DB, so we can access the session encryption data (above)
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//$user_php_session = session_id();
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//mysqli_query($mysqli, "UPDATE users SET user_php_session = '$user_php_session' WHERE user_id = $user_id");
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//}
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}
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if (isset($_GET['last_visited'])) {
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header("Location: ".$_SERVER["REQUEST_SCHEME"] . "://" . $config_base_url . base64_decode($_GET['last_visited']) );
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} else {
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header("Location: $config_start_page");
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}
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} else {
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// MFA is configured and needs to be confirmed, or was unsuccessful
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// HTML code for the token input field
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$token_field = "
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<div class='input-group mb-3'>
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<input type='text' inputmode='numeric' pattern='[0-9]*' maxlength='6' class='form-control' placeholder='Enter your 2FA code' name='current_code' required autofocus>
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<div class='input-group-append'>
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<div class='input-group-text'>
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<span class='fas fa-key'></span>
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</div>
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</div>
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</div>";
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// Log/notify if MFA was unsuccessful
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if ($current_code !== 0) {
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// Logging
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logAction("Login", "MFA Failed", "$user_name failed MFA", 0, $user_id);
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// Email the tech to advise their credentials may be compromised
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if (!empty($config_smtp_host)) {
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$subject = "Important: $config_app_name failed 2FA login attempt for $user_name";
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$body = "Hi $user_name, <br><br>A recent login to your $config_app_name account was unsuccessful due to an incorrect 2FA code. If you did not attempt this login, your credentials may be compromised. <br><br>Thanks, <br>ITFlow";
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$data = [
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[
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'from' => $config_mail_from_email,
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'from_name' => $config_mail_from_name,
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'recipient' => $user_email,
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'recipient_name' => $user_name,
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'subject' => $subject,
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'body' => $body
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]
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];
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$mail = addToMailQueue($data);
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}
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// HTML feedback for incorrect 2FA code
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$response = "
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<div class='alert alert-warning'>
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Please Enter 2FA Code!
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<button class='close' data-dismiss='alert'>×</button>
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</div>";
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}
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}
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} else {
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// Password incorrect or user doesn't exist - show generic error
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header("HTTP/1.1 401 Unauthorized");
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// Logging
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logAction("Login", "Failed", "Failed login attempt using $email");
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$response = "
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<div class='alert alert-danger'>
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Incorrect username or password.
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<button class='close' data-dismiss='alert'>×</button>
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</div>";
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}
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}
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<title><?php echo nullable_htmlentities($company_name); ?> | Login</title>
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<!-- Tell the browser to be responsive to screen width -->
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="robots" content="noindex">
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<!-- Font Awesome -->
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<link rel="stylesheet" href="plugins/fontawesome-free/css/all.min.css">
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<!--
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Favicon
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If Fav Icon exists else use the default one
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-->
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<?php if(file_exists('uploads/favicon.ico')) { ?>
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<link rel="icon" type="image/x-icon" href="/uploads/favicon.ico">
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<?php } ?>
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<!-- Theme style -->
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<link rel="stylesheet" href="plugins/adminlte/css/adminlte.min.css">
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</head>
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<body class="hold-transition login-page">
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<div class="login-box">
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<div class="login-logo">
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<?php if (!empty($company_logo)) { ?>
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<img alt="<?=nullable_htmlentities($company_name)?> logo" height="110" width="380" class="img-fluid" src="<?php echo "uploads/settings/$company_logo"; ?>">
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<?php } else { ?>
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<b>IT</b>Flow
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<?php } ?>
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</div>
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<!-- /.login-logo -->
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<div class="card">
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<div class="card-body login-card-body">
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<?php if (!empty($config_login_message)){ ?>
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<p class="login-box-msg px-0"><?php echo nl2br($config_login_message); ?></p>
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<?php } ?>
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<?php if (isset($response)) { ?>
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<p><?php echo $response; ?></p>
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<?php } ?>
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<form method="post">
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<div class="input-group mb-3" <?php if (isset($token_field)) { echo "hidden"; } ?>>
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<input type="text" class="form-control" placeholder="Agent Email" name="email" value="<?php if (isset($token_field)) { echo $email; }?>" required <?php if (!isset($token_field)) { echo "autofocus"; } ?> >
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<div class="input-group-append">
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<div class="input-group-text">
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<span class="fas fa-envelope"></span>
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</div>
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</div>
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</div>
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<div class="input-group mb-3" <?php if (isset($token_field)) { echo "hidden"; } ?>>
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<input type="password" class="form-control" placeholder="Agent Password" name="password" value="<?php if (isset($token_field)) { echo $password; } ?>" required>
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<div class="input-group-append">
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<div class="input-group-text">
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<span class="fas fa-lock"></span>
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</div>
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</div>
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</div>
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<?php
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if (isset($token_field)) {
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echo $token_field;
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?>
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<div class="form-group mb-3">
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<div class="custom-control custom-checkbox">
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<input type="checkbox" class="custom-control-input" id="remember_me" name="remember_me">
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<label class="custom-control-label" for="remember_me">Remember Me</label>
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</div>
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</div>
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<?php
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}
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?>
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<button type="submit" class="btn btn-primary btn-block mb-3" name="login">Sign In</button>
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<?php if($config_client_portal_enable == 1){ ?>
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<hr>
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<h5 class="text-center">Looking for the <a href="client">Client Portal?<a/></h5>
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<?php } ?>
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</form>
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</div>
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<!-- /.login-card-body -->
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</div>
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</div>
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<!-- /.login-box -->
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<!-- jQuery -->
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<script src="plugins/jquery/jquery.min.js"></script>
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<!-- Bootstrap 4 -->
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<script src="plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
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<!-- AdminLTE App -->
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<script src="plugins/adminlte/js/adminlte.min.js"></script>
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<!-- <script src="plugins/Show-Hide-Passwords-Bootstrap-4/bootstrap-show-password.min.js"></script> -->
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<!-- Prevents resubmit on refresh or back -->
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<script src="js/login_prevent_resubmit.js"></script>
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</body>
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</html>
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