936 lines
27 KiB
PHP
936 lines
27 KiB
PHP
<?php
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// This is free and unencumbered software released into the public domain.
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/**
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* OpenPGP.php is a pure-PHP implementation of the OpenPGP Message Format
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* (RFC 4880).
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*
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* @package OpenPGP
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* @version 0.0.1
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* @author Arto Bendiken <arto.bendiken@gmail.com>
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* @author Stephen Paul Weber <singpolyma@singpolyma.net>
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* @link http://github.com/bendiken/openpgp-php
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*/
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//////////////////////////////////////////////////////////////////////////////
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// OpenPGP utilities
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/**
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* @see http://tools.ietf.org/html/rfc4880
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*/
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class OpenPGP {
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-6
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* @see http://tools.ietf.org/html/rfc4880#section-6.2
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* @see http://tools.ietf.org/html/rfc2045
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*/
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static function enarmor($data, $marker = 'MESSAGE', array $headers = array()) {
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$text = self::header($marker) . "\n";
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foreach ($headers as $key => $value) {
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$text .= $key . ': ' . (string)$value . "\n";
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}
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$text .= "\n" . base64_encode($data);
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$text .= '=' . substr(pack('N', self::crc24($data)), 1) . "\n";
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$text .= self::footer($marker) . "\n";
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return $text;
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-6
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* @see http://tools.ietf.org/html/rfc2045
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*/
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static function unarmor($text, $header = 'PGP PUBLIC KEY BLOCK') {
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$header = self::header($header);
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$text = str_replace(array("\r\n", "\r"), array("\n", ''), $text);
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if (($pos1 = strpos($text, $header)) !== FALSE &&
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($pos1 = strpos($text, "\n\n", $pos1 += strlen($header))) !== FALSE &&
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($pos2 = strpos($text, "\n=", $pos1 += 2)) !== FALSE) {
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return base64_decode($text = substr($text, $pos1, $pos2 - $pos1));
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}
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-6.2
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*/
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static function header($marker) {
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return '-----BEGIN ' . strtoupper((string)$marker) . '-----';
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-6.2
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*/
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static function footer($marker) {
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return '-----END ' . strtoupper((string)$marker) . '-----';
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-6
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* @see http://tools.ietf.org/html/rfc4880#section-6.1
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*/
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static function crc24($data) {
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$crc = 0x00b704ce;
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for ($i = 0; $i < strlen($data); $i++) {
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$crc ^= (ord($data[$i]) & 255) << 16;
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for ($j = 0; $j < 8; $j++) {
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$crc <<= 1;
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if ($crc & 0x01000000) {
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$crc ^= 0x01864cfb;
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}
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}
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}
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return $crc & 0x00ffffff;
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-12.2
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*/
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static function bitlength($data) {
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return (strlen($data) - 1) * 8 + (int)floor(log(ord($data[0]), 2)) + 1;
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}
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}
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//////////////////////////////////////////////////////////////////////////////
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// OpenPGP messages
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-4.1
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* @see http://tools.ietf.org/html/rfc4880#section-11
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* @see http://tools.ietf.org/html/rfc4880#section-11.3
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*/
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class OpenPGP_Message implements IteratorAggregate, ArrayAccess {
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public $uri = NULL;
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public $packets = array();
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static function parse_file($path) {
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if (($msg = self::parse(file_get_contents($path)))) {
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$msg->uri = preg_match('!^[\w\d]+://!', $path) ? $path : 'file://' . realpath($path);
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return $msg;
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}
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-4.1
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* @see http://tools.ietf.org/html/rfc4880#section-4.2
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*/
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static function parse($input) {
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if (is_resource($input)) {
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return self::parse_stream($input);
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}
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if (is_string($input)) {
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return self::parse_string($input);
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}
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}
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static function parse_stream($input) {
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return self::parse_string(stream_get_contents($input));
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}
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static function parse_string($input) {
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$msg = new self;
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while (($length = strlen($input)) > 0) {
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if (($packet = OpenPGP_Packet::parse($input))) {
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$msg[] = $packet;
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}
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if ($length == strlen($input)) { // is parsing stuck?
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break;
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}
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}
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return $msg;
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}
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function __construct(array $packets = array()) {
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$this->packets = $packets;
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}
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// IteratorAggregate interface
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function getIterator() {
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return new ArrayIterator($this->packets);
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}
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// ArrayAccess interface
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function offsetExists($offset) {
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return isset($this->packets[$offset]);
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}
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function offsetGet($offset) {
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return $this->packets[$offset];
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}
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function offsetSet($offset, $value) {
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return is_null($offset) ? $this->packets[] = $value : $this->packets[$offset] = $value;
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}
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function offsetUnset($offset) {
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unset($this->packets[$offset]);
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}
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}
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//////////////////////////////////////////////////////////////////////////////
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// OpenPGP packets
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/**
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* OpenPGP packet.
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*
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* @see http://tools.ietf.org/html/rfc4880#section-4.1
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* @see http://tools.ietf.org/html/rfc4880#section-4.3
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*/
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class OpenPGP_Packet {
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public $tag, $size, $data;
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static function class_for($tag) {
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return isset(self::$tags[$tag]) && class_exists(
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$class = 'OpenPGP_' . self::$tags[$tag] . 'Packet') ? $class : __CLASS__;
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}
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/**
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* Parses an OpenPGP packet.
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*
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* @see http://tools.ietf.org/html/rfc4880#section-4.2
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*/
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static function parse(&$input) {
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$packet = NULL;
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if (strlen($input) > 0) {
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$parser = ord($input[0]) & 64 ? 'parse_new_format' : 'parse_old_format';
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list($tag, $head_length, $data_length) = self::$parser($input);
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$input = substr($input, $head_length);
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if ($tag && ($class = self::class_for($tag))) {
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$packet = new $class();
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$packet->tag = $tag;
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$packet->input = substr($input, 0, $data_length);
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$packet->length = $data_length;
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$packet->read();
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unset($packet->input);
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}
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$input = substr($input, $data_length);
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}
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return $packet;
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}
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/**
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* Parses a new-format (RFC 4880) OpenPGP packet.
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*
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* @see http://tools.ietf.org/html/rfc4880#section-4.2.2
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*/
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static function parse_new_format($input) {
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$tag = ord($input[0]) & 63;
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$len = ord($input[1]);
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if($len < 192) { // One octet length
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return array($tag, 2, $len);
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}
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if($len > 191 && $len < 224) { // Two octet length
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return array($tag, 3, (($len - 192) << 8) + ord($input[2]) + 192);
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}
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if($len == 255) { // Five octet length
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return array($tag, 6, unpack('N', substr($input, 2, 4)));
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}
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// TODO: Partial body lengths. 1 << ($len & 0x1F)
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}
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/**
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* Parses an old-format (PGP 2.6.x) OpenPGP packet.
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*
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* @see http://tools.ietf.org/html/rfc4880#section-4.2.1
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*/
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static function parse_old_format($input) {
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$len = ($tag = ord($input[0])) & 3;
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$tag = ($tag >> 2) & 15;
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switch ($len) {
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case 0: // The packet has a one-octet length. The header is 2 octets long.
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$head_length = 2;
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$data_length = ord($input[1]);
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break;
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case 1: // The packet has a two-octet length. The header is 3 octets long.
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$head_length = 3;
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$data_length = unpack('n', substr($input, 1, 2));
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$data_length = $data_length[1];
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break;
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case 2: // The packet has a four-octet length. The header is 5 octets long.
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$head_length = 5;
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$data_length = unpack('N', substr($input, 1, 4));
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$data_length = $data_length[1];
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break;
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case 3: // The packet is of indeterminate length. The header is 1 octet long.
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$head_length = 1;
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$data_length = strlen($input) - $head_length;
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break;
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}
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return array($tag, $head_length, $data_length);
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}
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function __construct() {}
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function read() {
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}
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function body() {
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return $this->data; // Will normally be overridden by subclasses
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}
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function header_and_body() {
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$body = $this->body(); // Get body first, we will need it's length
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$tag = chr($this->tag | 0xC0); // First two bits are 1 for new packet format
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$size = chr(255).pack('N', strlen($body)); // Use 5-octet lengths
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return array('header' => $tag.$size, 'body' => $body);
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}
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function to_bytes() {
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$data = $this->header_and_body();
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return $data['header'].$data['body'];
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-3.5
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*/
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function read_timestamp() {
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return $this->read_unpacked(4, 'N');
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-3.2
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*/
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function read_mpi() {
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$length = $this->read_unpacked(2, 'n'); // length in bits
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$length = (int)floor(($length + 7) / 8); // length in bytes
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return $this->read_bytes($length);
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}
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/**
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* @see http://php.net/manual/en/function.unpack.php
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*/
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function read_unpacked($count, $format) {
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$unpacked = unpack($format, $this->read_bytes($count));
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return $unpacked[1];
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}
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function read_byte() {
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return ($bytes = $this->read_bytes()) ? $bytes[0] : NULL;
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}
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function read_bytes($count = 1) {
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$bytes = substr($this->input, 0, $count);
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$this->input = substr($this->input, $count);
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return $bytes;
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}
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static $tags = array(
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1 => 'AsymmetricSessionKey', // Public-Key Encrypted Session Key
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2 => 'Signature', // Signature Packet
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3 => 'SymmetricSessionKey', // Symmetric-Key Encrypted Session Key Packet
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4 => 'OnePassSignature', // One-Pass Signature Packet
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5 => 'SecretKey', // Secret-Key Packet
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6 => 'PublicKey', // Public-Key Packet
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7 => 'SecretSubkey', // Secret-Subkey Packet
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8 => 'CompressedData', // Compressed Data Packet
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9 => 'EncryptedData', // Symmetrically Encrypted Data Packet
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10 => 'Marker', // Marker Packet
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11 => 'LiteralData', // Literal Data Packet
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12 => 'Trust', // Trust Packet
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13 => 'UserID', // User ID Packet
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14 => 'PublicSubkey', // Public-Subkey Packet
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17 => 'UserAttribute', // User Attribute Packet
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18 => 'IntegrityProtectedData', // Sym. Encrypted and Integrity Protected Data Packet
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19 => 'ModificationDetectionCode', // Modification Detection Code Packet
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60 => 'Experimental', // Private or Experimental Values
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61 => 'Experimental', // Private or Experimental Values
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62 => 'Experimental', // Private or Experimental Values
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63 => 'Experimental', // Private or Experimental Values
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);
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}
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/**
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* OpenPGP Public-Key Encrypted Session Key packet (tag 1).
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*
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* @see http://tools.ietf.org/html/rfc4880#section-5.1
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*/
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class OpenPGP_AsymmetricSessionKeyPacket extends OpenPGP_Packet {
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// TODO
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}
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/**
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* OpenPGP Signature packet (tag 2).
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*
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* @see http://tools.ietf.org/html/rfc4880#section-5.2
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*/
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class OpenPGP_SignaturePacket extends OpenPGP_Packet {
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public $version, $signature_type, $hash_algorithm, $key_algorithm, $hashed_subpackets, $unhashed_subpackets, $hash_head;
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public $trailer; // This is the literal bytes that get tacked on the end of the message when verifying the signature
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function read() {
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switch($this->version = ord($this->read_byte())) {
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case 3:
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// TODO: V3 sigs
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break;
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case 4:
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$this->signature_type = ord($this->read_byte());
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$this->key_algorithm = ord($this->read_byte());
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$this->hash_algorithm = ord($this->read_byte());
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$this->trailer = chr(4).chr($this->signature_type).chr($this->key_algorithm).chr($this->hash_algorithm);
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$hashed_size = $this->read_unpacked(2, 'n');
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$hashed_subpackets = $this->read_bytes($hashed_size);
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$this->trailer .= pack('n', $hashed_size).$hashed_subpackets;
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$this->hashed_subpackets = self::get_subpackets($hashed_subpackets);
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$this->trailer .= chr(4).chr(0xff).pack('N', 6 + $hashed_size);
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$unhashed_size = $this->read_unpacked(2, 'n');
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$this->unhashed_subpackets = self::get_subpackets($this->read_bytes($unhashed_size));
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$this->hash_head = $this->read_unpacked(2, 'n');
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$this->data = $this->read_mpi();
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break;
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}
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}
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function body() {
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$body = chr(4).chr($this->signature_type).chr($this->key_algorithm).chr($this->hash_algorithm);
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$hashed_subpackets = '';
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foreach($this->hashed_subpackets as $p) {
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$hashed_subpackets .= $p->to_bytes();
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}
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$body .= pack('n', strlen($hashed_subpackets)).$hashed_subpackets;
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$unhashed_subpackets = '';
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foreach($this->unhashed_subpackets as $p) {
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$unhashed_subpackets .= $p->to_bytes();
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}
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$body .= pack('n', strlen($unhashed_subpackets)).$unhashed_subpackets;
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$body .= pack('n', $this->hash_head);
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$body .= pack('n', floor((strlen($this->data) - 7)*8)).$this->data;
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return $body;
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}
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/**
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* @see http://tools.ietf.org/html/rfc4880#section-5.2.3.1
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*/
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static function get_subpackets($input) {
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$subpackets = array();
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while(($length = strlen($input)) > 0) {
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$subpackets[] = self::get_subpacket($input);
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if($length == strlen($input)) { // Parsing stuck?
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break;
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}
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}
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return $subpackets;
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}
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static function get_subpacket(&$input) {
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$len = ord($input[0]);
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$length_of_length = 1;
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// if($len < 192) One octet length, no furthur processing
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if($len > 190 && $len < 255) { // Two octet length
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$length_of_length = 2;
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$len = (($len - 192) << 8) + ord($input[1]) + 192;
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}
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if($len == 255) { // Five octet length
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$length_of_length = 5;
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$len = unpack('N', substr($input, 1, 4));
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}
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$input = substr($input, $length_of_length); // Chop off length header
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$tag = ord($input[0]);
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$class = self::class_for($tag);
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if($class) {
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$packet = new $class();
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$packet->tag = $tag;
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$packet->input = substr($input, 1, $len-1);
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$packet->length = $len-1;
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$packet->read();
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unset($packet->input);
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}
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$input = substr($input, $len); // Chop off the data from this packet
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return $packet;
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}
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static $subpacket_types = array(
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//0 => 'Reserved',
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//1 => 'Reserved',
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2 => 'SignatureCreationTime',
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3 => 'SignatureExpirationTime',
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4 => 'ExportableCertification',
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5 => 'TrustSignature',
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6 => 'RegularExpression',
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7 => 'Revocable',
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//8 => 'Reserved',
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9 => 'KeyExpirationTime',
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//10 => 'Placeholder for backward compatibility',
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11 => 'PreferredSymmetricAlgorithms',
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12 => 'RevocationKey',
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//13 => 'Reserved',
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//14 => 'Reserved',
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//15 => 'Reserved',
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16 => 'Issuer',
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//17 => 'Reserved',
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//18 => 'Reserved',
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//19 => 'Reserved',
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20 => 'NotationData',
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21 => 'PreferredHashAlgorithms',
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22 => 'PreferredCompressionAlgorithms',
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23 => 'KeyServerPreferences',
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24 => 'PreferredKeyServer',
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25 => 'PrimaryUserID',
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26 => 'PolicyURI',
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27 => 'KeyFlags',
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28 => 'SignersUserID',
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29 => 'ReasonforRevocation',
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30 => 'Features',
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31 => 'SignatureTarget',
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32 => 'EmbeddedSignature',
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);
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static function class_for($tag) {
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if(!self::$subpacket_types[$tag]) return NULL;
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return 'OpenPGP_SignaturePacket_'.self::$subpacket_types[$tag].'Packet';
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}
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}
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|
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class OpenPGP_SignaturePacket_Subpacket extends OpenPGP_Packet {
|
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function header_and_body() {
|
|
$body = $this->body(); // Get body first, we will need it's length
|
|
$size = chr(255).pack('N', strlen($body)+1); // Use 5-octet lengths + 1 for tag as first packet body octet
|
|
$tag = chr($this->tag);
|
|
return array('header' => $size.$tag, 'body' => $body);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.2.3.4
|
|
*/
|
|
class OpenPGP_SignaturePacket_SignatureCreationTimePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
function read() {
|
|
$this->data = $this->read_timestamp();
|
|
}
|
|
|
|
function body() {
|
|
return pack('N', $this->data);
|
|
}
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_SignatureExpirationTimePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_ExportableCertificationPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_TrustSignaturePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_RegularExpressionPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_RevocablePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_KeyExpirationTimePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PreferredSymmetricAlgorithmsPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_RevocationKeyPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.2.3.5
|
|
*/
|
|
class OpenPGP_SignaturePacket_IssuerPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
function read() {
|
|
for($i = 0; $i < 8; $i++) { // Store KeyID in Hex
|
|
$this->data .= dechex(ord($this->read_byte()));
|
|
}
|
|
}
|
|
|
|
function body() {
|
|
$bytes = '';
|
|
for($i = 0; $i < strlen($this->data); $i += 2) {
|
|
$bytes .= chr(hexdec($this->data{$i}.$this->data{$i+1}));
|
|
}
|
|
return $bytes;
|
|
}
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_NotationDataPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PreferredHashAlgorithmsPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PreferredCompressionAlgorithmsPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_KeyServerPreferencesPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PreferredKeyServerPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PrimaryUserIDPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_PolicyURIPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_KeyFlagsPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_SignersUserIDPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_ReasonforRevocationPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_FeaturesPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_SignatureTargetPacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
class OpenPGP_SignaturePacket_EmbeddedSignaturePacket extends OpenPGP_SignaturePacket_Subpacket {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Symmetric-Key Encrypted Session Key packet (tag 3).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.3
|
|
*/
|
|
class OpenPGP_SymmetricSessionKeyPacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP One-Pass Signature packet (tag 4).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.4
|
|
*/
|
|
class OpenPGP_OnePassSignaturePacket extends OpenPGP_Packet {
|
|
public $version, $signature_type, $hash_algorithm, $key_algorithm, $key_id, $nested;
|
|
function read() {
|
|
$this->version = ord($this->read_byte());
|
|
$this->signature_type = ord($this->read_byte());
|
|
$this->hash_algorithm = ord($this->read_byte());
|
|
$this->key_algorithm = ord($this->read_byte());
|
|
for($i = 0; $i < 8; $i++) { // Store KeyID in Hex
|
|
$this->key_id .= dechex(ord($this->read_byte()));
|
|
}
|
|
$this->nested = ord($this->read_byte());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Public-Key packet (tag 6).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.1.1
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-11.1
|
|
* @see http://tools.ietf.org/html/rfc4880#section-12
|
|
*/
|
|
class OpenPGP_PublicKeyPacket extends OpenPGP_Packet {
|
|
public $version, $timestamp, $algorithm;
|
|
public $key, $key_id, $fingerprint;
|
|
|
|
/**
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.2
|
|
*/
|
|
function read() {
|
|
switch ($this->version = ord($this->read_byte())) {
|
|
case 2:
|
|
case 3:
|
|
return FALSE; // TODO
|
|
case 4:
|
|
$this->timestamp = $this->read_timestamp();
|
|
$this->algorithm = ord($this->read_byte());
|
|
$this->read_key_material();
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.2
|
|
*/
|
|
function read_key_material() {
|
|
static $key_fields = array(
|
|
1 => array('n', 'e'), // RSA
|
|
16 => array('p', 'g', 'y'), // ELG-E
|
|
17 => array('p', 'q', 'g', 'y'), // DSA
|
|
);
|
|
foreach ($key_fields[$this->algorithm] as $field) {
|
|
$this->key[$field] = $this->read_mpi();
|
|
}
|
|
$this->key_id = substr($this->fingerprint(), -8);
|
|
}
|
|
|
|
/**
|
|
* @see http://tools.ietf.org/html/rfc4880#section-12.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-3.3
|
|
*/
|
|
function fingerprint() {
|
|
switch ($this->version) {
|
|
case 2:
|
|
case 3:
|
|
return $this->fingerprint = md5($this->key['n'] . $this->key['e']);
|
|
case 4:
|
|
$material = array(
|
|
chr(0x99), pack('n', $this->length),
|
|
chr($this->version), pack('N', $this->timestamp),
|
|
chr($this->algorithm),
|
|
);
|
|
foreach ($this->key as $data) {
|
|
$material[] = pack('n', OpenPGP::bitlength($data));
|
|
$material[] = $data;
|
|
}
|
|
return $this->fingerprint = sha1(implode('', $material));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Public-Subkey packet (tag 14).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.1.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-11.1
|
|
* @see http://tools.ietf.org/html/rfc4880#section-12
|
|
*/
|
|
class OpenPGP_PublicSubkeyPacket extends OpenPGP_PublicKeyPacket {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Secret-Key packet (tag 5).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.1.3
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.3
|
|
* @see http://tools.ietf.org/html/rfc4880#section-11.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-12
|
|
*/
|
|
class OpenPGP_SecretKeyPacket extends OpenPGP_PublicKeyPacket {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Secret-Subkey packet (tag 7).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.1.4
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.5.3
|
|
* @see http://tools.ietf.org/html/rfc4880#section-11.2
|
|
* @see http://tools.ietf.org/html/rfc4880#section-12
|
|
*/
|
|
class OpenPGP_SecretSubkeyPacket extends OpenPGP_SecretKeyPacket {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Compressed Data packet (tag 8).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.6
|
|
*/
|
|
class OpenPGP_CompressedDataPacket extends OpenPGP_Packet implements IteratorAggregate, ArrayAccess {
|
|
public $algorithm;
|
|
/* see http://tools.ietf.org/html/rfc4880#section-9.3 */
|
|
static $algorithms = array(0 => 'Uncompressed', 1 => 'ZIP', 2 => 'ZLIB', 3 => 'BZip2');
|
|
function read() {
|
|
$this->algorithm = ord($this->read_byte());
|
|
$this->data = $this->read_bytes($this->length);
|
|
switch($this->algorithm) {
|
|
case 0:
|
|
$this->data = OpenPGP_Message::parse($this->data);
|
|
break;
|
|
case 1:
|
|
$this->data = OpenPGP_Message::parse(gzinflate($this->data));
|
|
break;
|
|
case 2:
|
|
$this->data = OpenPGP_Message::parse(gzuncompress($this->data));
|
|
break;
|
|
case 3:
|
|
$this->data = OpenPGP_Message::parse(bzdecompress($this->data));
|
|
break;
|
|
default:
|
|
/* TODO error? */
|
|
}
|
|
if($this->data) {
|
|
$this->data = $this->data->packets;
|
|
}
|
|
}
|
|
|
|
// IteratorAggregate interface
|
|
|
|
function getIterator() {
|
|
return new ArrayIterator($this->data);
|
|
}
|
|
|
|
// ArrayAccess interface
|
|
|
|
function offsetExists($offset) {
|
|
return isset($this->data[$offset]);
|
|
}
|
|
|
|
function offsetGet($offset) {
|
|
return $this->data[$offset];
|
|
}
|
|
|
|
function offsetSet($offset, $value) {
|
|
return is_null($offset) ? $this->data[] = $value : $this->data[$offset] = $value;
|
|
}
|
|
|
|
function offsetUnset($offset) {
|
|
unset($this->data[$offset]);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Symmetrically Encrypted Data packet (tag 9).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.7
|
|
*/
|
|
class OpenPGP_EncryptedDataPacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Marker packet (tag 10).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.8
|
|
*/
|
|
class OpenPGP_MarkerPacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Literal Data packet (tag 11).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.9
|
|
*/
|
|
class OpenPGP_LiteralDataPacket extends OpenPGP_Packet {
|
|
public $format, $filename, $timestamp;
|
|
function read() {
|
|
$this->size = $this->length - 1 - 4;
|
|
$this->format = $this->read_byte();
|
|
$filename_length = ord($this->read_byte());
|
|
$this->size -= $filename_length;
|
|
$this->filename = $this->read_bytes($filename_length);
|
|
$this->timestamp = $this->read_timestamp();
|
|
$this->data = $this->read_bytes($this->size);
|
|
}
|
|
|
|
function body() {
|
|
return $this->format.chr(strlen($this->filename)).$this->filename.pack('N', $this->timestamp).$this->data;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Trust packet (tag 12).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.10
|
|
*/
|
|
class OpenPGP_TrustPacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP User ID packet (tag 13).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.11
|
|
* @see http://tools.ietf.org/html/rfc2822
|
|
*/
|
|
class OpenPGP_UserIDPacket extends OpenPGP_Packet {
|
|
public $name, $comment, $email;
|
|
|
|
function read() {
|
|
$this->text = $this->input;
|
|
// User IDs of the form: "name (comment) <email>"
|
|
if (preg_match('/^([^\(]+)\(([^\)]+)\)\s+<([^>]+)>$/', $this->text, $matches)) {
|
|
$this->name = trim($matches[1]);
|
|
$this->comment = trim($matches[2]);
|
|
$this->email = trim($matches[3]);
|
|
}
|
|
// User IDs of the form: "name <email>"
|
|
else if (preg_match('/^([^<]+)\s+<([^>]+)>$/', $this->text, $matches)) {
|
|
$this->name = trim($matches[1]);
|
|
$this->comment = NULL;
|
|
$this->email = trim($matches[2]);
|
|
}
|
|
// User IDs of the form: "name"
|
|
else if (preg_match('/^([^<]+)$/', $this->text, $matches)) {
|
|
$this->name = trim($matches[1]);
|
|
$this->comment = NULL;
|
|
$this->email = NULL;
|
|
}
|
|
// User IDs of the form: "<email>"
|
|
else if (preg_match('/^<([^>]+)>$/', $this->text, $matches)) {
|
|
$this->name = NULL;
|
|
$this->comment = NULL;
|
|
$this->email = trim($matches[2]);
|
|
}
|
|
}
|
|
|
|
function __toString() {
|
|
$text = array();
|
|
if ($this->name) { $text[] = $this->name; }
|
|
if ($this->comment) { $text[] = "({$this->comment})"; }
|
|
if ($this->email) { $text[] = "<{$this->email}>"; }
|
|
return implode(' ', $text);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* OpenPGP User Attribute packet (tag 17).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.12
|
|
* @see http://tools.ietf.org/html/rfc4880#section-11.1
|
|
*/
|
|
class OpenPGP_UserAttributePacket extends OpenPGP_Packet {
|
|
public $packets;
|
|
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Sym. Encrypted Integrity Protected Data packet (tag 18).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.13
|
|
*/
|
|
class OpenPGP_IntegrityProtectedDataPacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Modification Detection Code packet (tag 19).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-5.14
|
|
*/
|
|
class OpenPGP_ModificationDetectionCodePacket extends OpenPGP_Packet {
|
|
// TODO
|
|
}
|
|
|
|
/**
|
|
* OpenPGP Private or Experimental packet (tags 60..63).
|
|
*
|
|
* @see http://tools.ietf.org/html/rfc4880#section-4.3
|
|
*/
|
|
class OpenPGP_ExperimentalPacket extends OpenPGP_Packet {}
|