ref: 99ff1413ff9b62e63f729594a2590d095526476c
converter/server/vendor/rybakit/msgpack/src/BufferUnpacker.php
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<?php /* * This file is part of the rybakit/msgpack.php package. * * (c) Eugene Leonovich <gen.work@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace MessagePack; use MessagePack\Exception\InsufficientDataException; use MessagePack\Exception\IntegerOverflowException; use MessagePack\Exception\UnpackingFailedException; use MessagePack\TypeTransformer\Unpackable; class BufferUnpacker { private $buffer; private $offset = 0; private $isBigIntAsStr; private $isBigIntAsGmp; /** * @var Unpackable[]|null */ private $transformers; /** * @param string $buffer * @param UnpackOptions|int|null $options * * @throws \MessagePack\Exception\InvalidOptionException */ public function __construct(string $buffer = '', $options = null) { if (null === $options) { $options = UnpackOptions::fromDefaults(); } elseif (!$options instanceof PackOptions) { $options = UnpackOptions::fromBitmask($options); } $this->isBigIntAsStr = $options->isBigIntAsStrMode(); $this->isBigIntAsGmp = $options->isBigIntAsGmpMode(); $this->buffer = $buffer; } public function registerTransformer(Unpackable $transformer) : self { $this->transformers[$transformer->getType()] = $transformer; return $this; } public function append(string $data) : self { $this->buffer .= $data; return $this; } public function reset(string $buffer = '') : self { $this->buffer = $buffer; $this->offset = 0; return $this; } public function seek(int $offset) : self { if ($offset < 0) { $offset += \strlen($this->buffer); } if (!isset($this->buffer[$offset])) { throw new \OutOfBoundsException("Unable to seek to position $offset."); } $this->offset = $offset; return $this; } public function skip(int $offset) : self { $offset += $this->offset; if (!isset($this->buffer[$offset])) { throw new \OutOfBoundsException("Unable to seek to position $offset."); } $this->offset = $offset; return $this; } public function __clone() { $this->buffer = ''; $this->offset = 0; } public function tryUnpack() : array { $data = []; $offset = $this->offset; try { do { $data[] = $this->unpack(); $offset = $this->offset; } while (isset($this->buffer[$this->offset])); } catch (InsufficientDataException $e) { $this->offset = $offset; } if ($this->offset) { $this->buffer = isset($this->buffer[$this->offset]) ? \substr($this->buffer, $this->offset) : ''; $this->offset = 0; } return $data; } public function unpack() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; // fixint if ($c <= 0x7f) { return $c; } // fixstr if ($c >= 0xa0 && $c <= 0xbf) { return ($c & 0x1f) ? $this->unpackStrData($c & 0x1f) : ''; } // fixarray if ($c >= 0x90 && $c <= 0x9f) { return ($c & 0xf) ? $this->unpackArrayData($c & 0xf) : []; } // fixmap if ($c >= 0x80 && $c <= 0x8f) { return ($c & 0xf) ? $this->unpackMapData($c & 0xf) : []; } // negfixint if ($c >= 0xe0) { return $c - 0x100; } switch ($c) { case 0xc0: return null; case 0xc2: return false; case 0xc3: return true; // bin case 0xc4: return $this->unpackStrData($this->unpackUint8()); case 0xc5: return $this->unpackStrData($this->unpackUint16()); case 0xc6: return $this->unpackStrData($this->unpackUint32()); // float case 0xca: return $this->unpackFloat32(); case 0xcb: return $this->unpackFloat64(); // uint case 0xcc: return $this->unpackUint8(); case 0xcd: return $this->unpackUint16(); case 0xce: return $this->unpackUint32(); case 0xcf: return $this->unpackUint64(); // int case 0xd0: return $this->unpackInt8(); case 0xd1: return $this->unpackInt16(); case 0xd2: return $this->unpackInt32(); case 0xd3: return $this->unpackInt64(); // str case 0xd9: return $this->unpackStrData($this->unpackUint8()); case 0xda: return $this->unpackStrData($this->unpackUint16()); case 0xdb: return $this->unpackStrData($this->unpackUint32()); // array case 0xdc: return $this->unpackArrayData($this->unpackUint16()); case 0xdd: return $this->unpackArrayData($this->unpackUint32()); // map case 0xde: return $this->unpackMapData($this->unpackUint16()); case 0xdf: return $this->unpackMapData($this->unpackUint32()); // ext case 0xd4: return $this->unpackExtData(1); case 0xd5: return $this->unpackExtData(2); case 0xd6: return $this->unpackExtData(4); case 0xd7: return $this->unpackExtData(8); case 0xd8: return $this->unpackExtData(16); case 0xc7: return $this->unpackExtData($this->unpackUint8()); case 0xc8: return $this->unpackExtData($this->unpackUint16()); case 0xc9: return $this->unpackExtData($this->unpackUint32()); } throw UnpackingFailedException::unknownCode($c); } public function unpackNil() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } if ("\xc0" === $this->buffer[$this->offset]) { ++$this->offset; return null; } throw UnpackingFailedException::unexpectedCode(\ord($this->buffer[$this->offset++]), 'nil'); } public function unpackBool() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if (0xc2 === $c) { return false; } if (0xc3 === $c) { return true; } throw UnpackingFailedException::unexpectedCode($c, 'bool'); } public function unpackInt() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; // fixint if ($c <= 0x7f) { return $c; } // negfixint if ($c >= 0xe0) { return $c - 0x100; } switch ($c) { // uint case 0xcc: return $this->unpackUint8(); case 0xcd: return $this->unpackUint16(); case 0xce: return $this->unpackUint32(); case 0xcf: return $this->unpackUint64(); // int case 0xd0: return $this->unpackInt8(); case 0xd1: return $this->unpackInt16(); case 0xd2: return $this->unpackInt32(); case 0xd3: return $this->unpackInt64(); } throw UnpackingFailedException::unexpectedCode($c, 'int'); } public function unpackFloat() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if (0xcb === $c) { return $this->unpackFloat64(); } if (0xca === $c) { return $this->unpackFloat32(); } throw UnpackingFailedException::unexpectedCode($c, 'float'); } public function unpackStr() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if ($c >= 0xa0 && $c <= 0xbf) { return ($c & 0x1f) ? $this->unpackStrData($c & 0x1f) : ''; } if (0xd9 === $c) { return $this->unpackStrData($this->unpackUint8()); } if (0xda === $c) { return $this->unpackStrData($this->unpackUint16()); } if (0xdb === $c) { return $this->unpackStrData($this->unpackUint32()); } throw UnpackingFailedException::unexpectedCode($c, 'str'); } public function unpackBin() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if (0xc4 === $c) { return $this->unpackStrData($this->unpackUint8()); } if (0xc5 === $c) { return $this->unpackStrData($this->unpackUint16()); } if (0xc6 === $c) { return $this->unpackStrData($this->unpackUint32()); } throw UnpackingFailedException::unexpectedCode($c, 'bin'); } public function unpackArray() { $size = $this->unpackArrayHeader(); $array = []; while ($size--) { $array[] = $this->unpack(); } return $array; } public function unpackArrayHeader() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if ($c >= 0x90 && $c <= 0x9f) { return $c & 0xf; } if (0xdc === $c) { return $this->unpackUint16(); } if (0xdd === $c) { return $this->unpackUint32(); } throw UnpackingFailedException::unexpectedCode($c, 'array header'); } public function unpackMap() { $size = $this->unpackMapHeader(); $map = []; while ($size--) { $map[$this->unpack()] = $this->unpack(); } return $map; } public function unpackMapHeader() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; if ($c >= 0x80 && $c <= 0x8f) { return $c & 0xf; } if (0xde === $c) { return $this->unpackUint16(); } if (0xdf === $c) { return $this->unpackUint32(); } throw UnpackingFailedException::unexpectedCode($c, 'map header'); } public function unpackExt() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $c = \ord($this->buffer[$this->offset]); ++$this->offset; switch ($c) { case 0xd4: return $this->unpackExtData(1); case 0xd5: return $this->unpackExtData(2); case 0xd6: return $this->unpackExtData(4); case 0xd7: return $this->unpackExtData(8); case 0xd8: return $this->unpackExtData(16); case 0xc7: return $this->unpackExtData($this->unpackUint8()); case 0xc8: return $this->unpackExtData($this->unpackUint16()); case 0xc9: return $this->unpackExtData($this->unpackUint32()); } throw UnpackingFailedException::unexpectedCode($c, 'ext header'); } private function unpackUint8() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } return \ord($this->buffer[$this->offset++]); } private function unpackUint16() { if (!isset($this->buffer[$this->offset + 1])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 2); } $hi = \ord($this->buffer[$this->offset]); $lo = \ord($this->buffer[++$this->offset]); ++$this->offset; return $hi << 8 | $lo; } private function unpackUint32() { if (!isset($this->buffer[$this->offset + 3])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 4); } $num = \unpack('N', $this->buffer, $this->offset)[1]; $this->offset += 4; return $num; } private function unpackUint64() { if (!isset($this->buffer[$this->offset + 7])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 8); } $num = \unpack('J', $this->buffer, $this->offset)[1]; $this->offset += 8; return $num < 0 ? $this->handleIntOverflow($num) : $num; } private function unpackInt8() { if (!isset($this->buffer[$this->offset])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 1); } $num = \ord($this->buffer[$this->offset]); ++$this->offset; return $num > 0x7f ? $num - 0x100 : $num; } private function unpackInt16() { if (!isset($this->buffer[$this->offset + 1])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 2); } $hi = \ord($this->buffer[$this->offset]); $lo = \ord($this->buffer[++$this->offset]); ++$this->offset; return $hi > 0x7f ? $hi << 8 | $lo - 0x10000 : $hi << 8 | $lo; } private function unpackInt32() { if (!isset($this->buffer[$this->offset + 3])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 4); } $num = \unpack('N', $this->buffer, $this->offset)[1]; $this->offset += 4; return $num > 0x7fffffff ? $num - 0x100000000 : $num; } private function unpackInt64() { if (!isset($this->buffer[$this->offset + 7])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 8); } $num = \unpack('J', $this->buffer, $this->offset)[1]; $this->offset += 8; return $num; } private function unpackFloat32() { if (!isset($this->buffer[$this->offset + 3])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 4); } $num = \unpack('G', $this->buffer, $this->offset)[1]; $this->offset += 4; return $num; } private function unpackFloat64() { if (!isset($this->buffer[$this->offset + 7])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, 8); } $num = \unpack('E', $this->buffer, $this->offset)[1]; $this->offset += 8; return $num; } private function unpackStrData($length) { if (!isset($this->buffer[$this->offset + $length - 1])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, $length); } $str = \substr($this->buffer, $this->offset, $length); $this->offset += $length; return $str; } private function unpackArrayData($size) { $array = []; while ($size--) { $array[] = $this->unpack(); } return $array; } private function unpackMapData($size) { $map = []; while ($size--) { $map[$this->unpack()] = $this->unpack(); } return $map; } private function unpackExtData($length) { if (!isset($this->buffer[$this->offset + $length - 1])) { throw InsufficientDataException::unexpectedLength($this->buffer, $this->offset, $length); } // int8 $type = \ord($this->buffer[$this->offset]); ++$this->offset; if ($type > 0x7f) { $type -= 0x100; } if (isset($this->transformers[$type])) { return $this->transformers[$type]->unpack($this, $length); } $data = \substr($this->buffer, $this->offset, $length); $this->offset += $length; return new Ext($type, $data); } private function handleIntOverflow($value) { if ($this->isBigIntAsStr) { return \sprintf('%u', $value); } if ($this->isBigIntAsGmp) { return \gmp_init(\sprintf('%u', $value)); } throw new IntegerOverflowException($value); } } |