From 8ab033e995ad5b364e6dd4e388d72953ce4f34f1 Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Tue, 25 Jun 2019 14:11:04 +0200
Subject: [PATCH] Add PremadeStream

---
 .../Stream/Transport/PremadeStream.php        | 134 ++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 src/danog/MadelineProto/Stream/Transport/PremadeStream.php

diff --git a/src/danog/MadelineProto/Stream/Transport/PremadeStream.php b/src/danog/MadelineProto/Stream/Transport/PremadeStream.php
new file mode 100644
index 00000000..7fd2dc8d
--- /dev/null
+++ b/src/danog/MadelineProto/Stream/Transport/PremadeStream.php
@@ -0,0 +1,134 @@
+<?php
+/**
+ * Premade stream wrapper.
+ *
+ * This file is part of MadelineProto.
+ * MadelineProto is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ * MadelineProto is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Affero General Public License for more details.
+ * You should have received a copy of the GNU General Public License along with MadelineProto.
+ * If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @author    Daniil Gentili <daniil@daniil.it>
+ * @copyright 2016-2019 Daniil Gentili <daniil@daniil.it>
+ * @license   https://opensource.org/licenses/AGPL-3.0 AGPLv3
+ *
+ * @link      https://docs.madelineproto.xyz MadelineProto documentation
+ */
+
+namespace danog\MadelineProto\Stream\Transport;
+
+use Amp\Promise;
+use Amp\Socket\Socket;
+use danog\MadelineProto\Stream\Async\RawStream;
+use danog\MadelineProto\Stream\RawStreamInterface;
+use function Amp\Socket\connect;
+use function Amp\Socket\cryptoConnect;
+use danog\MadelineProto\Stream\ProxyStreamInterface;
+use Amp\ByteStream\ClosedException;
+use danog\MadelineProto\Stream\ConnectionContext;
+
+/**
+ * Premade stream wrapper.
+ *
+ * Manages reading data in chunks
+ *
+ * @author Daniil Gentili <daniil@daniil.it>
+ */
+class PremadeStream extends Socket implements RawStreamInterface, ProxyStreamInterface
+{
+    use RawStream;
+    private $stream;
+    
+    public function __construct()
+    {
+    }
+
+    public function enableCrypto(ClientTlsContext $tlsContext = null): \Amp\Promise
+    {
+        return $this->stream->enableCrypto($tlsContext);
+    }
+
+    public function getStream()
+    {
+        return $this->stream;
+    }
+
+    public function connectAsync(ConnectionContext $ctx, string $header = ''): \Generator
+    {
+        if ($header !== '') {
+            yield $this->stream->write($header);
+        }
+    }
+
+    /**
+     * Async chunked read.
+     *
+     * @return Promise
+     */
+    public function read(): Promise
+    {
+        return $this->stream ? $this->stream->read() : new \Amp\Success(null);
+    }
+
+    /**
+     * Async write.
+     *
+     * @param string $data Data to write
+     *
+     * @return Promise
+     */
+    public function write(string $data): Promise
+    {
+        if (!$this->stream) {
+            throw new ClosedException("MadelineProto stream was disconnected");
+        }
+        return $this->stream->write($data);
+    }
+
+    /**
+     * Async close.
+     *
+     * @return Generator
+     */
+    public function disconnect()
+    {
+        try {
+            if ($this->stream) {
+                $this->stream->close();
+                $this->stream = null;
+            }
+        } catch (\Throwable $e) {
+            \danog\MadelineProto\Logger::log('Got exception while closing stream: '.$e->getMessage());
+        } catch (\Exception $e) {
+            \danog\MadelineProto\Logger::log('Got exception while closing stream: '.$e->getMessage());
+        }
+    }
+
+    public function close()
+    {
+        $this->disconnect();
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return \Amp\Socket\Socket
+     */
+    public function getSocket(): \Amp\Socket\Socket
+    {
+        return $this->stream;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setExtra($extra)
+    {
+        $this->stream = $extra;
+    }
+    public static function getName(): string
+    {
+        return __CLASS__;
+    }
+}