itflow/login.php

701 lines
30 KiB
PHP

<?php
// Unified login (Agent + Client) using one email & password
header("Content-Security-Policy: default-src 'self'");
if (!file_exists('config.php')) {
header("Location: /setup");
exit();
}
require_once "config.php";
require_once "functions.php";
require_once "plugins/totp/totp.php";
if (session_status() === PHP_SESSION_NONE) {
ini_set("session.cookie_httponly", true);
if ($config_https_only || !isset($config_https_only)) {
ini_set("session.cookie_secure", true);
}
session_start();
}
if (!isset($config_enable_setup) || $config_enable_setup == 1) {
header("Location: /setup");
exit();
}
if (
$config_https_only
&& (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] !== 'on')
&& (!isset($_SERVER['HTTP_X_FORWARDED_PROTO']) || $_SERVER['HTTP_X_FORWARDED_PROTO'] !== 'https')
) {
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.";
exit;
}
require_once "includes/inc_set_timezone.php";
$session_ip = sanitizeInput(getIP());
$session_user_agent = sanitizeInput($_SERVER['HTTP_USER_AGENT'] ?? '');
$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)"
));
$failed_login_count = intval($row['failed_login_count']);
if ($failed_login_count >= 15) {
logAction("Login", "Blocked", "$session_ip was blocked access to login due to IP lockout");
header("HTTP/1.1 429 Too Many Requests");
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.");
}
// Settings
$sql_settings = mysqli_query($mysqli, "
SELECT settings.*, companies.company_name, companies.company_logo
FROM settings
LEFT JOIN companies ON settings.company_id = companies.company_id
WHERE settings.company_id = 1
");
$row = mysqli_fetch_array($sql_settings);
$company_name = $row['company_name'];
$company_logo = $row['company_logo'];
$config_start_page = nullable_htmlentities($row['config_start_page']);
$config_login_message = nullable_htmlentities($row['config_login_message']);
$config_smtp_host = $row['config_smtp_host'];
$config_smtp_port = intval($row['config_smtp_port']);
$config_smtp_encryption = $row['config_smtp_encryption'];
$config_smtp_username = $row['config_smtp_username'];
$config_smtp_password = $row['config_smtp_password'];
$config_mail_from_email = sanitizeInput($row['config_mail_from_email']);
$config_mail_from_name = sanitizeInput($row['config_mail_from_name']);
$config_client_portal_enable = intval($row['config_client_portal_enable']);
$config_login_remember_me_expire = intval($row['config_login_remember_me_expire']);
$config_login_key_required = $row['config_login_key_required'];
$config_login_key_secret = $row['config_login_key_secret'];
$azure_client_id = $row['config_azure_client_id'] ?? null;
$response = null;
$token_field = null;
$show_role_choice = false;
$email = '';
$password = ''; // only ever used in the initial POST request
// Helpers
function pendingExpired($sess, $ttl_seconds = 120) {
return !$sess || empty($sess['created']) || (time() - intval($sess['created']) > $ttl_seconds);
}
// POST handling
if ($_SERVER['REQUEST_METHOD'] === 'POST' && (isset($_POST['login']) || isset($_POST['role_choice']) || isset($_POST['mfa_login']))) {
$role_choice = $_POST['role_choice'] ?? null;
$is_login_step = isset($_POST['login']);
$is_role_step = isset($_POST['role_choice']) && !$is_login_step && !isset($_POST['mfa_login']);
$is_mfa_step = isset($_POST['mfa_login']);
// -----------------------------------
// STEP 2: ROLE CHOICE (no email/pass)
// -----------------------------------
if ($is_role_step) {
$posted_token = $_POST['pending_login_token'] ?? '';
$sess = $_SESSION['pending_dual_login'] ?? null;
if (pendingExpired($sess) || empty($posted_token) || empty($sess['token']) || !hash_equals($sess['token'], $posted_token)) {
unset($_SESSION['pending_dual_login']);
header("HTTP/1.1 401 Unauthorized");
$response = "
<div class='alert alert-danger'>
Your login session expired. Please sign in again.
</div>";
} else {
$email = sanitizeInput($sess['email'] ?? '');
}
}
// -----------------------------------
// STEP 3: MFA SUBMIT (no email/pass)
// -----------------------------------
if ($is_mfa_step && empty($response)) {
$posted_token = $_POST['pending_mfa_token'] ?? '';
$sess = $_SESSION['pending_mfa_login'] ?? null;
if (pendingExpired($sess) || empty($posted_token) || empty($sess['token']) || !hash_equals($sess['token'], $posted_token)) {
unset($_SESSION['pending_mfa_login']);
header("HTTP/1.1 401 Unauthorized");
$response = "
<div class='alert alert-danger'>
Your MFA session expired. Please sign in again.
</div>";
} else {
$email = sanitizeInput($sess['email'] ?? '');
$role_choice = 'agent';
}
}
// -----------------------------------
// STEP 1: INITIAL CREDENTIALS
// -----------------------------------
if ($is_login_step && empty($response)) {
$email = sanitizeInput($_POST['email'] ?? '');
$password = $_POST['password'] ?? '';
if (empty($email) || empty($password) || !filter_var($email, FILTER_VALIDATE_EMAIL)) {
header("HTTP/1.1 401 Unauthorized");
$response = "
<div class='alert alert-danger'>
Incorrect username or password.
</div>";
}
}
// Continue only if no response error
if (empty($response)) {
// Query all possible matches for that email
$sql = mysqli_query($mysqli, "
SELECT users.*,
user_settings.*,
contacts.*,
clients.*
FROM users
LEFT JOIN user_settings ON users.user_id = user_settings.user_id
LEFT JOIN contacts ON users.user_id = contacts.contact_user_id
LEFT JOIN clients ON contacts.contact_client_id = clients.client_id
WHERE user_email = '$email'
AND user_archived_at IS NULL
AND user_status = 1
AND (
user_type = 1
OR (user_type = 2 AND client_archived_at IS NULL)
)
");
$agentRow = null;
$clientRow = null;
// Step 1: verify password. Step 2/3: use stored allowed ids.
$allowed_agent_id = null;
$allowed_client_id = null;
if ($is_role_step) {
$sess = $_SESSION['pending_dual_login'] ?? null;
$allowed_agent_id = isset($sess['agent_user_id']) ? intval($sess['agent_user_id']) : null;
$allowed_client_id = isset($sess['client_user_id']) ? intval($sess['client_user_id']) : null;
}
if ($is_mfa_step) {
$sess = $_SESSION['pending_mfa_login'] ?? null;
$allowed_agent_id = isset($sess['agent_user_id']) ? intval($sess['agent_user_id']) : null;
}
while ($r = mysqli_fetch_assoc($sql)) {
$ut = intval($r['user_type']);
if ($is_login_step) {
// Only Step 1 checks password
if (!password_verify($password, $r['user_password'])) {
continue;
}
} else {
// Step 2/3: restrict to ids we previously verified
if ($ut === 1 && $allowed_agent_id !== null && intval($r['user_id']) !== $allowed_agent_id) {
continue;
}
if ($ut === 2 && $allowed_client_id !== null && intval($r['user_id']) !== $allowed_client_id) {
continue;
}
}
if ($ut === 1 && $agentRow === null) {
$agentRow = $r;
}
if ($ut === 2 && $clientRow === null) {
$clientRow = $r;
}
}
if ($agentRow === null && $clientRow === null) {
header("HTTP/1.1 401 Unauthorized");
logAction("Login", "Failed", "Failed login attempt using $email");
$response = "
<div class='alert alert-danger'>
Incorrect username or password.
</div>";
} else {
$selectedRow = null;
$selectedType = null; // 1 agent, 2 client
// Dual role
if ($agentRow !== null && $clientRow !== null) {
if ($role_choice === 'agent') {
$selectedRow = $agentRow;
$selectedType = 1;
} elseif ($role_choice === 'client') {
$selectedRow = $clientRow;
$selectedType = 2;
} else {
// Show role choice screen
$show_role_choice = true;
// If this is the first time (Step 1), we need to stash allowed ids and (optional) decrypted agent encryption key
// WITHOUT storing password.
if ($is_login_step) {
$pending_token = bin2hex(random_bytes(32));
// If agent has user-specific encryption ciphertext, decrypt it NOW while password is present.
$agent_master_key = null;
$agent_cipher = $agentRow['user_specific_encryption_ciphertext'] ?? null;
if (!empty($agent_cipher)) {
$agent_master_key = decryptUserSpecificKey($agent_cipher, $password);
}
$_SESSION['pending_dual_login'] = [
'email' => $email,
'agent_user_id' => intval($agentRow['user_id']),
'client_user_id' => intval($clientRow['user_id']),
'agent_master_key' => $agent_master_key, // may be null
'token' => $pending_token,
'created' => time()
];
}
}
} else {
// Single role
if ($agentRow !== null) {
$selectedRow = $agentRow;
$selectedType = 1;
} else {
$selectedRow = $clientRow;
$selectedType = 2;
}
}
// Proceed if selected
if ($selectedRow !== null && $selectedType !== null) {
// Clear dual pending once we actually proceed
unset($_SESSION['pending_dual_login']);
$user_id = intval($selectedRow['user_id']);
$user_email = sanitizeInput($selectedRow['user_email']);
// =========================
// AGENT FLOW
// =========================
if ($selectedType === 1) {
if ($config_login_key_required) {
if (!isset($_GET['key']) || $_GET['key'] !== $config_login_key_secret) {
redirect();
}
}
$user_name = sanitizeInput($selectedRow['user_name']);
$token = sanitizeInput($selectedRow['user_token']);
$force_mfa = intval($selectedRow['user_config_force_mfa']);
$user_encryption_ciphertext = $selectedRow['user_specific_encryption_ciphertext'];
$current_code = 0;
if (isset($_POST['current_code'])) {
$current_code = intval($_POST['current_code']);
}
$mfa_is_complete = false;
$extended_log = '';
if (empty($token)) {
$mfa_is_complete = true; // no MFA configured
}
// remember-me cookie allows bypass
if (isset($_COOKIE['rememberme'])) {
$remember_tokens = mysqli_query($mysqli, "
SELECT remember_token_token
FROM remember_tokens
WHERE remember_token_user_id = $user_id
AND remember_token_created_at > (NOW() - INTERVAL $config_login_remember_me_expire DAY)
");
while ($remember_row = mysqli_fetch_assoc($remember_tokens)) {
if (hash_equals($remember_row['remember_token_token'], $_COOKIE['rememberme'])) {
$mfa_is_complete = true;
$extended_log = 'with 2FA remember-me cookie';
break;
}
}
}
// Validate MFA code
if (!empty($current_code) && TokenAuth6238::verify($token, $current_code)) {
$mfa_is_complete = true;
$extended_log = 'with MFA';
}
if ($mfa_is_complete) {
// Clear pending MFA if exists
unset($_SESSION['pending_mfa_login']);
// Remember me token creation
if (isset($_POST['remember_me'])) {
$newRememberToken = bin2hex(random_bytes(64));
setcookie('rememberme', $newRememberToken, time() + 86400 * $config_login_remember_me_expire, "/", null, true, true);
mysqli_query($mysqli, "
INSERT INTO remember_tokens
SET remember_token_user_id = $user_id,
remember_token_token = '$newRememberToken'
");
$extended_log .= ", generated a new remember-me token";
}
// Suspicious login checks / email notify (kept from your code)
$sql_ip_prev_logins = mysqli_fetch_assoc(mysqli_query($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
"));
$ip_previous_logins = sanitizeInput($sql_ip_prev_logins['ip_previous_logins']);
$sql_ua_prev_logins = mysqli_fetch_assoc(mysqli_query($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
"));
$ua_prev_logins = sanitizeInput($sql_ua_prev_logins['ua_previous_logins']);
if (!empty($config_smtp_host) && $ip_previous_logins == 0 && $ua_prev_logins == 0) {
$subject = "$config_app_name new login for $user_name";
$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";
$data = [[
'from' => $config_mail_from_email,
'from_name' => $config_mail_from_name,
'recipient' => $user_email,
'recipient_name' => $user_name,
'subject' => $subject,
'body' => $body
]];
addToMailQueue($data);
}
logAction("Login", "Success", "$user_name successfully logged in $extended_log", 0, $user_id);
$_SESSION['user_id'] = $user_id;
$_SESSION['csrf_token'] = randomString(32);
$_SESSION['logged'] = true;
if ($force_mfa == 1 && $token == NULL) {
$config_start_page = "user/mfa_enforcement.php";
}
// ✅ Setup encryption session key WITHOUT PASSWORD IN SESSION
// If we are coming from MFA step, master key is in pending_mfa_login.
// If we are coming from login step with no MFA, decrypt now.
$site_encryption_master_key = null;
if ($is_mfa_step) {
$sess = $_SESSION['pending_mfa_login'] ?? null;
if ($sess && isset($sess['agent_master_key'])) {
$site_encryption_master_key = $sess['agent_master_key'];
}
} else {
// No MFA step: password exists in this request (Step 1)
if (!empty($user_encryption_ciphertext)) {
$site_encryption_master_key = decryptUserSpecificKey($user_encryption_ciphertext, $password);
}
}
if (!empty($site_encryption_master_key)) {
generateUserSessionKey($site_encryption_master_key);
}
// Redirect
if (isset($_GET['last_visited']) && (str_starts_with(base64_decode($_GET['last_visited']), '/agent') || str_starts_with(base64_decode($_GET['last_visited']), '/admin'))) {
redirect($_SERVER["REQUEST_SCHEME"] . "://" . $config_base_url . base64_decode($_GET['last_visited']));
} else {
redirect("agent/$config_start_page");
}
} else {
// MFA required — store *only what we need*, not password
$pending_mfa_token = bin2hex(random_bytes(32));
// If we arrived here from role-choice step, the agent master key may be in pending_dual_login
// If we arrived from initial login step, decrypt now (password in memory) and store master key.
$agent_master_key = null;
if ($is_role_step) {
$sess = $_SESSION['pending_dual_login'] ?? null;
if ($sess && isset($sess['agent_master_key'])) {
$agent_master_key = $sess['agent_master_key'];
}
} else {
if (!empty($user_encryption_ciphertext)) {
$agent_master_key = decryptUserSpecificKey($user_encryption_ciphertext, $password);
}
}
$_SESSION['pending_mfa_login'] = [
'email' => $user_email,
'agent_user_id' => $user_id,
'agent_master_key'=> $agent_master_key, // may be null
'token' => $pending_mfa_token,
'created' => time()
];
$token_field = "
<div class='input-group mb-3'>
<input type='text' inputmode='numeric' pattern='[0-9]*' maxlength='6'
class='form-control' placeholder='Verify your 2FA code'
name='current_code' required autofocus>
<div class='input-group-append'>
<div class='input-group-text'>
<span class='fas fa-key'></span>
</div>
</div>
</div>";
if ($current_code !== 0) {
logAction("Login", "MFA Failed", "$user_email failed MFA", 0, $user_id);
if (!empty($config_smtp_host)) {
$subject = "Important: $config_app_name failed 2FA login attempt for $user_name";
$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";
$data = [[
'from' => $config_mail_from_email,
'from_name' => $config_mail_from_name,
'recipient' => $user_email,
'recipient_name' => $user_name,
'subject' => $subject,
'body' => $body
]];
addToMailQueue($data);
}
$response = "
<div class='alert alert-danger'>
Please enter a valid 2FA code.
</div>";
}
}
// =========================
// CLIENT FLOW
// =========================
} elseif ($selectedType === 2) {
if ($config_client_portal_enable != 1) {
header("HTTP/1.1 401 Unauthorized");
logAction("Client Login", "Failed", "Client portal disabled; login attempt using $email");
$response = "
<div class='alert alert-danger'>
Incorrect username or password.
</div>";
} else {
$client_id = intval($selectedRow['contact_client_id']);
$contact_id = intval($selectedRow['contact_id']);
$user_auth_method = sanitizeInput($selectedRow['user_auth_method']);
if ($client_id && $contact_id && $user_auth_method === 'local') {
$_SESSION['client_logged_in'] = true;
$_SESSION['client_id'] = $client_id;
$_SESSION['user_id'] = $user_id;
$_SESSION['user_type'] = 2;
$_SESSION['contact_id'] = $contact_id;
$_SESSION['login_method'] = "local";
logAction("Client Login", "Success", "Client contact $user_email successfully logged in locally", $client_id, $user_id);
header("Location: client/index.php");
exit();
} else {
logAction("Client Login", "Failed", "Failed client portal login attempt using $email (invalid auth method or missing contact/client)", $client_id ?? 0, $user_id);
header("HTTP/1.1 401 Unauthorized");
$response = "
<div class='alert alert-danger'>
Incorrect username or password.
</div>";
}
}
}
}
}
}
}
// Form state
$show_mfa_form = (isset($token_field) && !empty($token_field));
$show_login_form = (!$show_role_choice && !$show_mfa_form);
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><?php echo nullable_htmlentities($company_name); ?> | Login</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="robots" content="noindex">
<link rel="stylesheet" href="plugins/fontawesome-free/css/all.min.css">
<?php if(file_exists('uploads/favicon.ico')) { ?>
<link rel="icon" type="image/x-icon" href="/uploads/favicon.ico">
<?php } ?>
<link rel="stylesheet" href="plugins/adminlte/css/adminlte.min.css">
</head>
<body class="hold-transition login-page">
<div class="login-box">
<div class="login-logo">
<?php if (!empty($company_logo)) { ?>
<img alt="<?=nullable_htmlentities($company_name)?> logo" height="110" width="380" class="img-fluid" src="<?php echo "uploads/settings/$company_logo"; ?>">
<?php } else { ?>
<span class="text-primary text-bold"><i class="fas fa-paper-plane mr-2"></i>IT</span>Flow
<?php } ?>
</div>
<div class="card">
<div class="card-body login-card-body">
<?php if (!empty($config_login_message)){ ?>
<p class="login-box-msg px-0"><?php echo nl2br($config_login_message); ?></p>
<?php } ?>
<?php if (isset($response)) { ?>
<p><?php echo $response; ?></p>
<?php } ?>
<form method="post">
<?php if ($show_login_form): ?>
<!-- STEP 1: Email + Password -->
<div class="input-group mb-3">
<input type="text" class="form-control"
placeholder="<?php if ($config_login_key_required) { if (!isset($_GET['key']) || $_GET['key'] !== $config_login_key_secret) { echo "Client "; } } echo "Email"; ?>"
name="email"
value="<?php echo htmlspecialchars($email ?? '', ENT_QUOTES); ?>"
required autofocus
>
<div class="input-group-append">
<div class="input-group-text">
<span class="fas fa-envelope"></span>
</div>
</div>
</div>
<div class="input-group mb-3">
<input type="password" class="form-control" placeholder="Password" name="password" required>
<div class="input-group-append">
<div class="input-group-text">
<span class="fas fa-lock"></span>
</div>
</div>
</div>
<button type="submit" class="btn btn-primary btn-block mb-3" name="login">Sign In</button>
<?php endif; ?>
<?php if ($show_role_choice): ?>
<!-- STEP 2: Role choice only -->
<input type="hidden" name="pending_login_token"
value="<?php echo htmlspecialchars($_SESSION['pending_dual_login']['token'] ?? '', ENT_QUOTES); ?>">
<div class="mb-2 text-center">
<button type="submit" class="btn btn-dark btn-block mb-2" name="role_choice" value="agent">
Log in as Agent
</button>
<button type="submit" class="btn btn-light btn-block" name="role_choice" value="client">
Log in as Client
</button>
</div>
<?php endif; ?>
<?php if ($show_mfa_form): ?>
<!-- STEP 3: MFA only -->
<?php echo $token_field; ?>
<input type="hidden" name="pending_mfa_token"
value="<?php echo htmlspecialchars($_SESSION['pending_mfa_login']['token'] ?? '', ENT_QUOTES); ?>">
<div class="form-group mb-3">
<div class="custom-control custom-checkbox">
<input type="checkbox" class="custom-control-input" id="remember_me" name="remember_me">
<label class="custom-control-label" for="remember_me">Remember Me</label>
</div>
</div>
<button type="submit" class="btn btn-dark btn-block mb-3" name="mfa_login">Verify & Sign In</button>
<?php endif; ?>
</form>
<?php if($config_client_portal_enable == 1){ ?>
<hr>
<?php if (!empty($config_smtp_host)) { ?>
<a href="client/login_reset.php">Forgot password?</a>
<?php } ?>
<?php if (!empty($azure_client_id)) { ?>
<div class="col text-center mt-2">
<a href="client/login_microsoft.php">
<button type="button" class="btn btn-secondary">Login with Microsoft Entra</button>
</a>
</div>
<?php } ?>
<?php } ?>
</div>
</div>
</div>
<?php
if (!$config_whitelabel_enabled) {
echo '<small class="text-muted">Powered by ITFlow</small>';
}
?>
<script src="plugins/jquery/jquery.min.js"></script>
<script src="plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
<script src="plugins/adminlte/js/adminlte.min.js"></script>
<script src="js/login_prevent_resubmit.js"></script>
</body>
</html>