UICommon: Add NetPlayIndex helper

This commit is contained in:
spycrab 2019-03-30 14:48:46 +01:00
parent 3dbf44417a
commit 827e40d78a
4 changed files with 390 additions and 1 deletions

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@ -5,6 +5,7 @@ add_library(uicommon
DiscordPresence.cpp
GameFile.cpp
GameFileCache.cpp
NetPlayIndex.cpp
ResourcePack/Manager.cpp
ResourcePack/Manifest.cpp
ResourcePack/ResourcePack.cpp

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@ -0,0 +1,321 @@
// Copyright 2019 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "UICommon/NetPlayIndex.h"
#include <picojson/picojson.h>
#include "Common/HttpRequest.h"
#include "Common/Thread.h"
#include "Common/Version.h"
#include "Core/Config/NetplaySettings.h"
NetPlayIndex::NetPlayIndex()
{
}
NetPlayIndex::~NetPlayIndex()
{
if (!m_secret.empty())
Remove();
}
static std::optional<picojson::value> ParseResponse(std::vector<u8> response)
{
std::string response_string(reinterpret_cast<char*>(response.data()), response.size());
picojson::value json;
auto error = picojson::parse(json, response_string);
if (!error.empty())
return {};
return json;
}
std::optional<std::vector<NetPlaySession>>
NetPlayIndex::List(const std::map<std::string, std::string>& filters)
{
Common::HttpRequest request;
std::string list_url = Config::Get(Config::NETPLAY_INDEX_URL) + "/v0/list";
if (!filters.empty())
{
list_url += "?";
for (const auto& filter : filters)
{
list_url += filter.first + "=" + request.EscapeComponent(filter.second) + "&";
}
list_url = list_url.substr(0, list_url.size() - 1);
}
auto response = request.Get(list_url);
if (!response)
{
m_last_error = "NO_RESPONSE";
return {};
}
auto json = ParseResponse(response.value());
if (!json)
{
m_last_error = "BAD_JSON";
return {};
}
const auto& status = json->get("status");
if (status.to_str() != "OK")
{
m_last_error = status.to_str();
return {};
}
const auto& entries = json->get("sessions");
std::vector<NetPlaySession> sessions;
for (const auto& entry : entries.get<picojson::array>())
{
NetPlaySession session;
const auto& name = entry.get("name");
const auto& region = entry.get("region");
const auto& method = entry.get("method");
const auto& game_id = entry.get("game");
const auto& server_id = entry.get("server_id");
const auto& has_password = entry.get("password");
const auto& player_count = entry.get("player_count");
const auto& port = entry.get("port");
const auto& in_game = entry.get("in_game");
if (!name.is<std::string>() || !region.is<std::string>() || !method.is<std::string>() ||
!server_id.is<std::string>() || !game_id.is<std::string>() || !has_password.is<bool>() ||
!player_count.is<double>() || !port.is<double>() || !in_game.is<bool>())
continue;
session.name = name.to_str();
session.region = region.to_str();
session.game_id = game_id.to_str();
session.server_id = server_id.to_str();
session.method = method.to_str();
session.has_password = has_password.get<bool>();
session.player_count = static_cast<int>(player_count.get<double>());
session.port = static_cast<int>(port.get<double>());
session.in_game = in_game.get<bool>();
sessions.push_back(session);
}
return sessions;
}
void NetPlayIndex::NotificationLoop()
{
while (m_running.IsSet())
{
Common::HttpRequest request;
auto response = request.Get(
Config::Get(Config::NETPLAY_INDEX_URL) + "/v0/session/active?secret=" + m_secret +
"&player_count=" + std::to_string(m_player_count) +
"&game=" + request.EscapeComponent(m_game) + "&in_game=" + std::to_string(m_in_game));
if (!response)
continue;
auto json = ParseResponse(response.value());
if (!json)
{
m_last_error = "BAD_JSON";
m_running.Set(false);
return;
}
std::string status = json->get("status").to_str();
if (status != "OK")
{
m_last_error = status;
m_running.Set(false);
return;
}
Common::SleepCurrentThread(1000 * 5);
}
}
bool NetPlayIndex::Add(NetPlaySession session)
{
m_running.Set(true);
Common::HttpRequest request;
auto response = request.Get(
Config::Get(Config::NETPLAY_INDEX_URL) + "/v0/session/add?name=" +
request.EscapeComponent(session.name) + "&region=" + request.EscapeComponent(session.region) +
"&game=" + request.EscapeComponent(session.game_id) +
"&password=" + std::to_string(session.has_password) + "&method=" + session.method +
"&server_id=" + session.server_id + "&in_game=" + std::to_string(session.in_game) +
"&port=" + std::to_string(session.port) +
"&player_count=" + std::to_string(session.player_count) + "&version=" + Common::scm_desc_str);
if (!response.has_value())
{
m_last_error = "NO_RESPONSE";
return false;
}
auto json = ParseResponse(response.value());
if (!json)
{
m_last_error = "BAD_JSON";
return false;
}
std::string status = json->get("status").to_str();
if (status != "OK")
{
m_last_error = status;
return false;
}
m_secret = json->get("secret").to_str();
m_in_game = session.in_game;
m_player_count = session.player_count;
m_game = session.game_id;
m_session_thread = std::thread([this] { NotificationLoop(); });
m_session_thread.detach();
return true;
}
void NetPlayIndex::SetInGame(bool in_game)
{
m_in_game = in_game;
}
void NetPlayIndex::SetPlayerCount(int player_count)
{
m_player_count = player_count;
}
void NetPlayIndex::SetGame(const std::string& game)
{
m_game = game;
}
void NetPlayIndex::Remove()
{
if (m_secret.empty())
return;
m_running.Set(false);
if (m_session_thread.joinable())
m_session_thread.join();
// We don't really care whether this fails or not
Common::HttpRequest request;
request.Get(Config::Get(Config::NETPLAY_INDEX_URL) + "/v0/session/remove?secret=" + m_secret);
m_secret = "";
}
std::vector<std::string> NetPlayIndex::GetRegions()
{
static std::vector<std::string> regions{"AF", "CN", "EA", "EU", "NA", "OC"};
return regions;
}
// This encryption system uses simple XOR operations and a checksum
// It isn't very secure but is preferable to adding another dependency on mbedtls
// The encrypted data is encoded as nibbles with the character 'A' as the base offset
bool NetPlaySession::EncryptID(const std::string& password)
{
if (password.empty())
return false;
u8 i = 0;
std::string to_encrypt = server_id;
// Calculate and append checksum to ID
u8 sum = 0;
for (char c : to_encrypt)
sum += c;
to_encrypt += sum;
std::string encrypted_id;
for (const char& byte : to_encrypt)
{
char c = byte ^ password[i % password.size()];
c += i;
encrypted_id += 'A' + ((c & 0xF0) >> 4);
encrypted_id += 'A' + (c & 0x0F);
++i;
}
server_id = encrypted_id;
return true;
}
std::optional<std::string> NetPlaySession::DecryptID(const std::string& password) const
{
if (password.empty())
return {};
// If the length of an encrypted session id is not divisble by two, it's invalid
if (server_id.empty() || server_id.size() % 2 != 0)
return {};
std::string decoded;
for (size_t i = 0; i < server_id.size(); i += 2)
{
char c = (server_id[i] - 'A') << 4 | (server_id[i + 1] - 'A');
decoded.push_back(c);
}
u8 i = 0;
for (auto& c : decoded)
{
c -= i;
c ^= password[i % password.size()];
++i;
}
// Verify checksum
u8 expected_sum = decoded[decoded.size() - 1];
decoded = decoded.substr(0, decoded.size() - 1);
u8 sum = 0;
for (char c : decoded)
sum += c;
if (sum != expected_sum)
return {};
return decoded;
}
const std::string& NetPlayIndex::GetLastError() const
{
return m_last_error;
}

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@ -0,0 +1,65 @@
// Copyright 2019 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <map>
#include <optional>
#include <string>
#include <thread>
#include <vector>
#include "Common/Flag.h"
struct NetPlaySession
{
std::string name;
std::string region;
std::string method;
std::string server_id;
std::string game_id;
int player_count;
int port;
bool has_password;
bool in_game;
bool EncryptID(const std::string& password);
std::optional<std::string> DecryptID(const std::string& password) const;
};
class NetPlayIndex
{
public:
explicit NetPlayIndex();
~NetPlayIndex();
std::optional<std::vector<NetPlaySession>>
List(const std::map<std::string, std::string>& filters = {});
static std::vector<std::string> GetRegions();
bool Add(NetPlaySession session);
void Remove();
void SetPlayerCount(int player_count);
void SetInGame(bool in_game);
void SetGame(const std::string& game);
const std::string& GetLastError() const;
private:
void NotificationLoop();
Common::Flag m_running;
std::string m_secret;
std::string m_game;
int m_player_count = 0;
bool m_in_game = false;
std::string m_last_error;
std::thread m_session_thread;
};

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@ -53,6 +53,7 @@
<ClCompile Include="AutoUpdate.cpp" />
<ClCompile Include="CommandLineParse.cpp" />
<ClCompile Include="DiscordPresence.cpp" />
<ClCompile Include="NetPlayIndex.cpp" />
<ClCompile Include="ResourcePack\Manager.cpp" />
<ClCompile Include="ResourcePack\Manifest.cpp" />
<ClCompile Include="ResourcePack\ResourcePack.cpp" />
@ -69,6 +70,7 @@
<ClInclude Include="AutoUpdate.h" />
<ClInclude Include="CommandLineParse.h" />
<ClInclude Include="DiscordPresence.h" />
<ClInclude Include="NetPlayIndex.h" />
<ClInclude Include="ResourcePack\Manager.h" />
<ClInclude Include="ResourcePack\Manifest.h" />
<ClInclude Include="ResourcePack\ResourcePack.h" />
@ -86,4 +88,4 @@
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>
</Project>