diff --git a/auth.php b/auth.php new file mode 100644 index 0000000..171d9be --- /dev/null +++ b/auth.php @@ -0,0 +1,65 @@ +connect_error) + die("Connection failed: " . $conn->connect_error); + +$realm = 'GPS Tracker'; + +if (empty($_SERVER['PHP_AUTH_DIGEST'])) { + header('HTTP/1.1 401 Unauthorized'); + header('WWW-Authenticate: Digest realm="'.$realm. + '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"'); + + die('Authentication failed.'); +} + +if (!($data = http_digest_parse($_SERVER['PHP_AUTH_DIGEST']))) { + header('HTTP/1.1 401 Unauthorized'); + header('WWW-Authenticate: Digest realm="'.$realm. '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"'); + + die ('Authentication failed.'); +} + +$sql = "SELECT password FROM users WHERE user='" . mysqli_real_escape_string($conn, $data['username']) . "';"; +$result = $conn->query($sql); + +if ($result->num_rows != 1) { + header('HTTP/1.1 401 Unauthorized'); + header('WWW-Authenticate: Digest realm="'.$realm. '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"'); + + die('Authentication failed.'); +} + +$A1 = md5($data['username'] . ':' . $realm . ':' . $result->fetch_assoc()['password']); +$A2 = md5($_SERVER['REQUEST_METHOD'].':'.$data['uri']); +$valid_response = md5($A1.':'.$data['nonce'].':'.$data['nc'].':'.$data['cnonce'].':'.$data['qop'].':'.$A2); + +if ($data['response'] != $valid_response) { + header('HTTP/1.1 401 Unauthorized'); + header('WWW-Authenticate: Digest realm="'.$realm. '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"'); + die('Authentication failed.'); +} + +function http_digest_parse($txt) { + $needed_parts = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1, 'uri'=>1, 'response'=>1); + $data = array(); + $keys = implode('|', array_keys($needed_parts)); + + preg_match_all('@(' . $keys . ')=(?:([\'"])([^\2]+?)\2|([^\s,]+))@', $txt, $matches, PREG_SET_ORDER); + + foreach ($matches as $m) { + $data[$m[1]] = $m[3] ? $m[3] : $m[4]; + unset($needed_parts[$m[1]]); + } + + return $needed_parts ? false : $data; +} + +?>