| 1 | <?php |
| 2 | /************************************************************* |
| 3 | # 076 License |
| 4 | |
| 5 | Copyright (c) テクニカル諏訪子 |
| 6 | |
| 7 | Permission is hereby granted to any person obtaining a copy of the software |
| 8 | Little Beast (the "Software") to use, modify, merge, copy, publish, distribute, |
| 9 | sublicense, and/or sell copies of the Software, subject to the following conditions: |
| 10 | |
| 11 | 1. **Origin Attribution**: |
| 12 | - You must not misrepresent the origin of the Software; you must not claim |
| 13 | you created the original Software. |
| 14 | - If the Software is used in a product, you must either: |
| 15 | a. Provide clear attribution in the product's documentation, user interface, |
| 16 | or other visible areas, **OR** |
| 17 | b. Pay the original developers a fee they specify in writing. |
| 18 | 2. **Usage Restriction**: |
| 19 | - The Software, or any derivative works, dependencies, or libraries |
| 20 | incorporating it, must not be used for censorship or to suppress freedom of |
| 21 | speech, expression, or creativity. Prohibited uses include, but are not |
| 22 | limited to: |
| 23 | - Censorship of so-called "hate speech", visuals, non-mainstream opinions, |
| 24 | ideas, or objective reality. |
| 25 | - Tools or systems designed to restrict access to information or |
| 26 | artistic works. |
| 27 | 3. **Notice Preservation**: |
| 28 | - This license and the above copyright notice must remain intact in all copies |
| 29 | of the source code. |
| 30 | |
| 31 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 32 | INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A |
| 33 | PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| 34 | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF |
| 35 | CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE |
| 36 | OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 37 | */ |
| 38 | namespace Std\Lib; |
| 39 | |
| 40 | use Std\Lib\Tls\Connection; |
| 41 | use Std\Lib\Tls\Stream; |
| 42 | use Std\Lib\Tls\TlsException; |
| 43 | |
| 44 | /** |
| 45 | * PHP純正のTLS 1.3・1.2(php-opensslが不要、GMPは必要) |
| 46 | * |
| 47 | * 結果はPHPのストリームなので、fread・fgets・fwrite・feof・fclose・stream_set_timeoutがそのまま使える。 |
| 48 | * |
| 49 | * クライアント: |
| 50 | * $s = Tls::connect('example.com', 443, ['alpn' => ['http/1.1']]); |
| 51 | * fwrite($s, "GET / HTTP/1.1\r\nHost: example.com\r\n\r\n"); |
| 52 | * STARTTLS(既に接続しているソケット): |
| 53 | * $s = Tls::enable($socket, ['peer_name' => 'smtp.example.com']); |
| 54 | * サーバー(テスト等): |
| 55 | * $s = Tls::accept($client, ['cert' => $certPem, 'key' => $keyPem]); |
| 56 | * |
| 57 | * オプション(PHPのsslコンテキストと同じ名前): |
| 58 | * peer_name 確認するホスト名(SNIにも使う) |
| 59 | * verify_peer 証明書を確認する(既定true) |
| 60 | * verify_peer_name ホスト名を確認する(既定true) |
| 61 | * allow_self_signed 自己署名の証明書を許す(既定false) |
| 62 | * cafile 信頼する証明書のPEMファイル(省略するとTLS_CAFILE、又はシステムの証明書) |
| 63 | * SNI_enabled SNIを送る(既定true) |
| 64 | * alpn ALPNのプロトコルの配列(例:['http/1.1']) |
| 65 | * groups 鍵交換のグループ(既定['x25519', 'P-256', 'P-384']、最初の鍵を最初に送る) |
| 66 | * min_version・max_version 使うバージョン('1.2'又は'1.3'、既定は1.2から1.3) |
| 67 | * ciphers 暗号スイートの番号の配列(Connection::SUITES・SUITES12のキー、既定は全部) |
| 68 | * cert・key サーバーの証明書(チェーン)と秘密鍵(PEM又はファイル、local_cert・local_pkも可) |
| 69 | */ |
| 70 | class Tls { |
| 71 | /** |
| 72 | * TCPで接続してTLSを開始する |
| 73 | * |
| 74 | * @param string $host ホスト名又はIPアドレス |
| 75 | * @param int $port ポート |
| 76 | * @param array $opt オプション(peer_nameを省略すると$host) |
| 77 | * @param float $timeout 接続と読み込みのタイムアウト(秒) |
| 78 | * @return resource ストリーム |
| 79 | * @throws TlsException 接続又はハンドシェイクに失敗した場合 |
| 80 | */ |
| 81 | public static function connect(string $host, int $port, array $opt = [], float $timeout = 10) { |
| 82 | $addr = str_contains($host, ':') && !str_starts_with($host, '[') ? "[{$host}]" : $host; |
| 83 | $errno = 0; |
| 84 | $errstr = ''; |
| 85 | $sock = @stream_socket_client("tcp://{$addr}:{$port}", $errno, $errstr, $timeout, STREAM_CLIENT_CONNECT, stream_context_create()); |
| 86 | if ($sock === false) throw new TlsException("接続出来ません:{$errstr}({$errno})", Connection::ALERT_INTERNAL_ERROR, true); |
| 87 | stream_set_timeout($sock, (int)$timeout, (int)(fmod($timeout, 1) * 1000000)); |
| 88 | $opt += ['peer_name' => trim($host, '[]')]; |
| 89 | try { |
| 90 | return self::enable($sock, $opt); |
| 91 | } catch (\Throwable $e) { |
| 92 | @fclose($sock); |
| 93 | throw $e; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * 既に接続しているソケットでTLSを開始する(クライアント、STARTTLS等) |
| 99 | * |
| 100 | * @param resource $socket ソケット(返したストリームを閉じると、これも閉じる) |
| 101 | * @param array $opt オプション |
| 102 | * @return resource ストリーム |
| 103 | * @throws TlsException |
| 104 | */ |
| 105 | public static function enable($socket, array $opt = []) { |
| 106 | $conn = new Connection($socket, $opt, false); |
| 107 | $conn->handshake(); |
| 108 | return Stream::wrap($conn); |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * 既に接続しているソケットでTLSを開始する(サーバー) |
| 113 | * |
| 114 | * @param resource $socket 受け付けたソケット |
| 115 | * @param array $opt オプション(cert・keyが必要) |
| 116 | * @return resource ストリーム |
| 117 | * @throws TlsException |
| 118 | */ |
| 119 | public static function accept($socket, array $opt) { |
| 120 | $conn = new Connection($socket, $opt, true); |
| 121 | $conn->handshake(); |
| 122 | return Stream::wrap($conn); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * TLSのストリームの情報 |
| 127 | * |
| 128 | * @param resource $stream |
| 129 | * @return array|null version、cipher、group、alpn、peer_certificates、server_name、TLSでなければnull |
| 130 | */ |
| 131 | public static function info($stream): ?array { |
| 132 | return Stream::connection($stream)?->info(); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * 読み込み中のエラー(feof()がtrueになった理由) |
| 137 | * |
| 138 | * @param resource $stream |
| 139 | * @return TlsException|null |
| 140 | */ |
| 141 | public static function error($stream): ?TlsException { |
| 142 | return Stream::connection($stream)?->lastError(); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * 読んでいないデータが残っているかどうか(stream_select()を使うサーバー用:TLSの中に溜まったデータは見えない) |
| 147 | * |
| 148 | * @param resource $stream |
| 149 | * @return bool |
| 150 | */ |
| 151 | public static function pending($stream): bool { |
| 152 | if (!is_resource($stream)) return false; |
| 153 | return (stream_get_meta_data($stream)['unread_bytes'] ?? 0) > 0 || (bool)Stream::connection($stream)?->pending(); |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * 最後の読み込みがタイムアウトしたかどうか |
| 158 | * |
| 159 | * @param resource $stream |
| 160 | * @return bool |
| 161 | */ |
| 162 | public static function timedOut($stream): bool { |
| 163 | return (bool)Stream::connection($stream)?->timedOut(); |
| 164 | } |
| 165 | } |