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include/comm/packet/packet.hpp

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+/*
+  Copyright <2018-2022> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+  associated documentation files (the "Software"), to deal in the Software without restriction,
+  including without limitation the rights to use, copy, modify, merge, publish, distribute,
+  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all copies or
+  substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+  OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+#ifndef INCLUDE_COMM_PACKET_PACKET_HPP_
+#define INCLUDE_COMM_PACKET_PACKET_HPP_
+
+#include "common.hpp"
+#include "types/remote.hpp"
+#include "types/repertory.hpp"
+
+namespace repertory {
+#define DECODE_OR_RETURN(p, value)                                                                 \
+  if ((ret = (p)->decode(value)) != 0)                                                             \
+  return ret
+#define DECODE_OR_IGNORE(p, value)                                                                 \
+  if (ret == 0)                                                                                    \
+  ret = (p)->decode(value)
+
+class packet final {
+public:
+  typedef std::int32_t error_type;
+
+public:
+  packet() = default;
+
+  explicit packet(std::vector<char> buffer) : buffer_(std::move(buffer)) {}
+
+  explicit packet(std::vector<char> &&buffer) : buffer_(std::move(buffer)) {}
+
+  packet(const packet &p) noexcept : buffer_(p.buffer_), decode_offset_(p.decode_offset_) {}
+
+  packet(packet &&p) noexcept : buffer_(std::move(p.buffer_)), decode_offset_(p.decode_offset_) {}
+
+private:
+  std::vector<char> buffer_;
+  std::size_t decode_offset_ = 0u;
+
+public:
+  static int decode_json(packet &response, json &json_data);
+
+public:
+  void clear();
+
+  char *current_pointer() {
+    return (decode_offset_ < buffer_.size()) ? &buffer_[decode_offset_] : nullptr;
+  }
+
+  const char *current_pointer() const {
+    return (decode_offset_ < buffer_.size()) ? &buffer_[decode_offset_] : nullptr;
+  }
+
+  error_type decode(std::string &data);
+
+  error_type decode(std::wstring &data);
+
+  error_type decode(void *buffer, const size_t &size);
+
+  error_type decode(void *&ptr);
+
+  error_type decode(std::int8_t &i);
+
+  error_type decode(std::uint8_t &i);
+
+  error_type decode(std::int16_t &i);
+
+  error_type decode(std::uint16_t &i);
+
+  error_type decode(std::int32_t &i);
+
+  error_type decode(std::uint32_t &i);
+
+  error_type decode(std::int64_t &i);
+
+  error_type decode(std::uint64_t &i);
+
+  error_type decode(remote::open_flags &i) {
+    return decode(reinterpret_cast<std::uint32_t &>(i));
+  }
+
+  error_type decode(remote::setattr_x &i);
+
+  error_type decode(remote::stat &i);
+
+  error_type decode(remote::statfs &i);
+
+  error_type decode(remote::statfs_x &i);
+
+  error_type decode(remote::file_info &i);
+
+  error_type decrypt(const std::string &token);
+
+  void encode(const void *buffer, const std::size_t &size, bool should_reserve = true);
+
+  void encode(char *str) { encode(std::string(str ? str : "")); }
+
+  void encode(const char *str) { encode(std::string(str ? str : "")); }
+
+  void encode(const std::string &str);
+
+  void encode(wchar_t *str);
+
+  void encode(const wchar_t *str);
+
+  void encode(const std::wstring &str);
+
+  void encode(void *ptr) {
+    encode(static_cast<std::uint64_t>(reinterpret_cast<std::uintptr_t>(ptr)));
+  }
+
+  void encode(std::int8_t i);
+
+  void encode(std::uint8_t i);
+
+  void encode(std::int16_t i);
+
+  void encode(std::uint16_t i);
+
+  void encode(std::int32_t i);
+
+  void encode(std::uint32_t i);
+
+  void encode(std::int64_t i);
+
+  void encode(std::uint64_t i);
+
+  void encode(remote::open_flags i) { encode(static_cast<std::uint32_t>(i)); }
+
+  void encode(remote::setattr_x i);
+
+  void encode(remote::stat i);
+
+  void encode(remote::statfs i, bool should_reserve = true);
+
+  void encode(remote::statfs_x i);
+
+  void encode(remote::file_info i);
+
+  void encode_top(const void *buffer, const std::size_t &size, bool should_reserve = true);
+
+  void encode_top(const std::string &str);
+
+  void encode_top(const std::wstring &str);
+
+  void encode_top(void *ptr) {
+    encode_top(static_cast<std::uint64_t>(reinterpret_cast<std::uintptr_t>(ptr)));
+  }
+
+  void encode_top(std::int8_t i);
+
+  void encode_top(std::uint8_t i);
+
+  void encode_top(std::int16_t i);
+
+  void encode_top(std::uint16_t i);
+
+  void encode_top(std::int32_t i);
+
+  void encode_top(std::uint32_t i);
+
+  void encode_top(std::int64_t i);
+
+  void encode_top(std::uint64_t i);
+
+  void encode_top(remote::open_flags i) { encode_top(static_cast<std::uint32_t>(i)); }
+
+  void encode_top(remote::setattr_x i);
+
+  void encode_top(remote::stat i);
+
+  void encode_top(remote::statfs i, bool should_reserve = true);
+
+  void encode_top(remote::statfs_x i);
+
+  void encode_top(remote::file_info i);
+
+  void encrypt(const std::string &token);
+
+  std::uint32_t get_size() const { return static_cast<std::uint32_t>(buffer_.size()); }
+
+  void transfer_into(std::vector<char> &buffer);
+
+public:
+  packet &operator=(const std::vector<char> &buffer) noexcept;
+
+  packet &operator=(std::vector<char> &&buffer) noexcept;
+
+  packet &operator=(const packet &p) noexcept;
+
+  packet &operator=(packet &&p) noexcept;
+
+  char &operator[](const size_t &index) { return buffer_[index]; }
+
+  const char &operator[](const size_t &index) const { return buffer_.at(index); }
+};
+typedef packet packet;
+} // namespace repertory
+
+#endif // INCLUDE_COMM_PACKET_PACKET_HPP_