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$bufOrBin : new ByteBuffer($bufOrBin); $offset = $startOffset; $data = self::_parseItem($buf, $offset); $endOffset = $offset; return $data; } // --------------------- // protected // --------------------- /** * @param ByteBuffer $buf * @param int $offset * @return mixed */ protected static function _parseItem(ByteBuffer $buf, &$offset) { $first = $buf->getByteVal($offset++); $type = $first >> 5; $val = $first & 0b11111; if ($type === self::CBOR_MAJOR_FLOAT_SIMPLE) { return self::_parseFloatSimple($val, $buf, $offset); } $val = self::_parseExtraLength($val, $buf, $offset); return self::_parseItemData($type, $val, $buf, $offset); } protected static function _parseFloatSimple($val, ByteBuffer $buf, &$offset) { switch ($val) { case 24: $val = $buf->getByteVal($offset); $offset++; return self::_parseSimple($val); case 25: $floatValue = $buf->getHalfFloatVal($offset); $offset += 2; return $floatValue; case 26: $floatValue = $buf->getFloatVal($offset); $offset += 4; return $floatValue; case 27: $floatValue = $buf->getDoubleVal($offset); $offset += 8; return $floatValue; case 28: case 29: case 30: throw new WebAuthnException('Reserved value used.', WebAuthnException::CBOR); case 31: throw new WebAuthnException('Indefinite length is not supported.', WebAuthnException::CBOR); } return self::_parseSimple($val); } /** * @param int $val * @return mixed * @throws WebAuthnException */ protected static function _parseSimple($val) { if ($val === 20) { return false; } if ($val === 21) { return true; } if ($val === 22) { return null; } throw new WebAuthnException(sprintf('Unsupported simple value %d.', $val), WebAuthnException::CBOR); } protected static function _parseExtraLength($val, ByteBuffer $buf, &$offset) { switch ($val) { case 24: $val = $buf->getByteVal($offset); $offset++; break; case 25: $val = $buf->getUint16Val($offset); $offset += 2; break; case 26: $val = $buf->getUint32Val($offset); $offset += 4; break; case 27: $val = $buf->getUint64Val($offset); $offset += 8; break; case 28: case 29: case 30: throw new WebAuthnException('Reserved value used.', WebAuthnException::CBOR); case 31: throw new WebAuthnException('Indefinite length is not supported.', WebAuthnException::CBOR); } return $val; } protected static function _parseItemData($type, $val, ByteBuffer $buf, &$offset) { switch ($type) { case self::CBOR_MAJOR_UNSIGNED_INT: // uint return $val; case self::CBOR_MAJOR_NEGATIVE_INT: return -1 - $val; case self::CBOR_MAJOR_BYTE_STRING: $data = $buf->getBytes($offset, $val); $offset += $val; return new ByteBuffer($data); // bytes case self::CBOR_MAJOR_TEXT_STRING: $data = $buf->getBytes($offset, $val); $offset += $val; return $data; // UTF-8 case self::CBOR_MAJOR_ARRAY: return self::_parseArray($buf, $offset, $val); case self::CBOR_MAJOR_MAP: return self::_parseMap($buf, $offset, $val); case self::CBOR_MAJOR_TAG: return self::_parseItem($buf, $offset); // 1 embedded data item } // This should never be reached throw new WebAuthnException(sprintf('Unknown major type %d.', $type), WebAuthnException::CBOR); } protected static function _parseMap(ByteBuffer $buf, &$offset, $count) { $map = array(); for ($i = 0; $i < $count; $i++) { $mapKey = self::_parseItem($buf, $offset); $mapVal = self::_parseItem($buf, $offset); if (!\is_int($mapKey) && !\is_string($mapKey)) { throw new WebAuthnException('Can only use strings or integers as map keys', WebAuthnException::CBOR); } $map[$mapKey] = $mapVal; // todo dup } return $map; } protected static function _parseArray(ByteBuffer $buf, &$offset, $count) { $arr = array(); for ($i = 0; $i < $count; $i++) { $arr[] = self::_parseItem($buf, $offset); } return $arr; } } PK\aƮCborDecoder.phpnu[PKO