82 lines
2.5 KiB
PHP
82 lines
2.5 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
namespace DeliciousBrains\WP_Offload_Media\Aws3\Aws\Api\Parser;
|
||
|
|
|
||
|
|
use DeliciousBrains\WP_Offload_Media\Aws3\GuzzleHttp\Psr7;
|
||
|
|
use DeliciousBrains\WP_Offload_Media\Aws3\Psr\Http\Message\StreamInterface;
|
||
|
|
use DeliciousBrains\WP_Offload_Media\Aws3\Aws\Api\Parser\Exception\ParserException;
|
||
|
|
/**
|
||
|
|
* @inheritDoc
|
||
|
|
*/
|
||
|
|
class NonSeekableStreamDecodingEventStreamIterator extends DecodingEventStreamIterator
|
||
|
|
{
|
||
|
|
/** @var array $tempBuffer */
|
||
|
|
private $tempBuffer;
|
||
|
|
/**
|
||
|
|
* NonSeekableStreamDecodingEventStreamIterator constructor.
|
||
|
|
*
|
||
|
|
* @param StreamInterface $stream
|
||
|
|
*/
|
||
|
|
public function __construct(StreamInterface $stream)
|
||
|
|
{
|
||
|
|
$this->stream = $stream;
|
||
|
|
if ($this->stream->isSeekable()) {
|
||
|
|
throw new \InvalidArgumentException('The stream provided must be not seekable.');
|
||
|
|
}
|
||
|
|
$this->tempBuffer = [];
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @inheritDoc
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function parseEvent() : array
|
||
|
|
{
|
||
|
|
$event = [];
|
||
|
|
$this->hashContext = \hash_init('crc32b');
|
||
|
|
$prelude = $this->parsePrelude()[0];
|
||
|
|
list($event[self::HEADERS], $numBytes) = $this->parseHeaders($prelude[self::LENGTH_HEADERS]);
|
||
|
|
$event[self::PAYLOAD] = Psr7\Utils::streamFor($this->readAndHashBytes($prelude[self::LENGTH_TOTAL] - self::BYTES_PRELUDE - $numBytes - self::BYTES_TRAILING));
|
||
|
|
$calculatedCrc = \hash_final($this->hashContext, \true);
|
||
|
|
$messageCrc = $this->stream->read(4);
|
||
|
|
if ($calculatedCrc !== $messageCrc) {
|
||
|
|
throw new ParserException('Message checksum mismatch.');
|
||
|
|
}
|
||
|
|
return $event;
|
||
|
|
}
|
||
|
|
protected function readAndHashBytes($num) : string
|
||
|
|
{
|
||
|
|
$bytes = '';
|
||
|
|
while (!empty($this->tempBuffer) && $num > 0) {
|
||
|
|
$byte = \array_shift($this->tempBuffer);
|
||
|
|
$bytes .= $byte;
|
||
|
|
$num = $num - 1;
|
||
|
|
}
|
||
|
|
$bytes = $bytes . $this->stream->read($num);
|
||
|
|
\hash_update($this->hashContext, $bytes);
|
||
|
|
return $bytes;
|
||
|
|
}
|
||
|
|
// Iterator Functionality
|
||
|
|
#[\ReturnTypeWillChange]
|
||
|
|
public function rewind()
|
||
|
|
{
|
||
|
|
$this->currentEvent = $this->parseEvent();
|
||
|
|
}
|
||
|
|
public function next()
|
||
|
|
{
|
||
|
|
$this->tempBuffer[] = $this->stream->read(1);
|
||
|
|
if ($this->valid()) {
|
||
|
|
$this->key++;
|
||
|
|
$this->currentEvent = $this->parseEvent();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
#[\ReturnTypeWillChange]
|
||
|
|
public function valid()
|
||
|
|
{
|
||
|
|
return !$this->stream->eof();
|
||
|
|
}
|
||
|
|
}
|