Connection string support for XRay protocol (#777)
* Connection string support for XRay protocol
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Mykola Baibuz
GitHub
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commit
e6ee9085a2
39 changed files with 20709 additions and 11 deletions
244
client/core/serialization/ssd.cpp
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244
client/core/serialization/ssd.cpp
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// Copyright (c) Qv2ray, A Qt frontend for V2Ray. Written in C++.
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// This file is part of the Qv2ray VPN client.
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//
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// Qv2ray, A Qt frontend for V2Ray. Written in C++
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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// Copyright (c) 2024 AmneziaVPN
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// This file has been modified for AmneziaVPN
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//
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// This file is based on the work of the Qv2ray VPN client.
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// The original code of the Qv2ray, A Qt frontend for V2Ray. Written in C++ and licensed under GPL3.
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//
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// The modified version of this file is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this file. If not, see <https://www.gnu.org/licenses/>.
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/**
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* A Naive SSD Decoder for Qv2ray
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*
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* @author DuckSoft <realducksoft@gmail.com>
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* @copyright Licensed under GPLv3.
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*/
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#include "3rd/QJsonStruct/QJsonIO.hpp"
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#include "3rd/QJsonStruct/QJsonStruct.hpp"
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#include "utilities.h"
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#include "serialization.h"
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const inline QString QV2RAY_SSD_DEFAULT_NAME_PATTERN = "%1 - %2 (rate %3)";
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#define OUTBOUND_TAG_PROXY "PROXY"
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namespace amnezia::serialization::ssd
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{
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// These below are super strict checking schemes, but necessary.
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#define MUST_EXIST(fieldName) \
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if (!obj.contains((fieldName)) || obj[(fieldName)].isUndefined() || obj[(fieldName)].isNull()) \
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{ \
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*logList << QObject::tr("Invalid ssd link: json: field %1 must exist").arg(fieldName); \
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return {}; \
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}
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#define MUST_PORT(fieldName) \
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MUST_EXIST(fieldName); \
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if (int value = obj[(fieldName)].toInt(-1); value < 0 || value > 65535) \
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{ \
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*logList << QObject::tr("Invalid ssd link: json: field %1 must be valid port number"); \
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return {}; \
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}
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#define MUST_STRING(fieldName) \
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MUST_EXIST(fieldName); \
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if (!obj[(fieldName)].isString()) \
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{ \
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*logList << QObject::tr("Invalid ssd link: json: field %1 must be of type 'string'").arg(fieldName); \
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return {}; \
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}
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#define MUST_ARRAY(fieldName) \
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MUST_EXIST(fieldName); \
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if (!obj[(fieldName)].isArray()) \
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{ \
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*logList << QObject::tr("Invalid ssd link: json: field %1 must be an array").arg(fieldName); \
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return {}; \
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}
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#define SERVER_SHOULD_BE_OBJECT(server) \
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if (!server.isObject()) \
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{ \
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*logList << QObject::tr("Skipping invalid ssd server: server must be an object"); \
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continue; \
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}
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#define SHOULD_EXIST(fieldName) \
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if (serverObject[(fieldName)].isUndefined()) \
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{ \
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*logList << QObject::tr("Skipping invalid ssd server: missing required field %1").arg(fieldName); \
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continue; \
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}
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#define SHOULD_STRING(fieldName) \
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SHOULD_EXIST(fieldName); \
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if (!serverObject[(fieldName)].isString()) \
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{ \
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*logList << QObject::tr("Skipping invalid ssd server: field %1 should be of type 'string'").arg(fieldName); \
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continue; \
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}
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QList<std::pair<QString, QJsonObject>> Deserialize(const QString &uri, QString *groupName, QStringList *logList)
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{
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// ssd links should begin with "ssd://"
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if (!uri.startsWith("ssd://"))
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{
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*logList << QObject::tr("Invalid ssd link: should begin with ssd://");
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return {};
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}
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// decode base64
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const auto ssdURIBody = uri.mid(6, uri.length() - 6); //(&uri, 6, uri.length() - 6);
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const auto decodedJSON = Utils::SafeBase64Decode(ssdURIBody).toUtf8();
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if (decodedJSON.length() == 0)
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{
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*logList << QObject::tr("Invalid ssd link: base64 parse failed");
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return {};
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}
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const auto decodeError = Utils::VerifyJsonString(decodedJSON);
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if (!decodeError.isEmpty())
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{
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*logList << QObject::tr("Invalid ssd link: json parse failed");
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return {};
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}
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// casting to object
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const auto obj = Utils::JsonFromString(decodedJSON);
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// obj.airport
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MUST_STRING("airport");
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*groupName = obj["airport"].toString();
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// obj.port
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MUST_PORT("port");
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const int port = obj["port"].toInt();
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// obj.encryption
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MUST_STRING("encryption");
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const auto encryption = obj["encryption"].toString();
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// check: rc4-md5 is not supported by v2ray-core
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// TODO: more checks, including all algorithms
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if (encryption.toLower() == "rc4-md5")
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{
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*logList << QObject::tr("Invalid ssd link: rc4-md5 encryption is not supported by v2ray-core");
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return {};
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}
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// obj.password
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MUST_STRING("password");
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const auto password = obj["password"].toString();
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// obj.servers
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MUST_ARRAY("servers");
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//
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QList<std::pair<QString, QJsonObject>> serverList;
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//
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// iterate through the servers
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for (const auto &server : obj["servers"].toArray())
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{
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SERVER_SHOULD_BE_OBJECT(server);
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const auto serverObject = server.toObject();
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ShadowSocksServerObject ssObject;
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// encryption
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ssObject.method = encryption;
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// password
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ssObject.password = password;
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// address :-> "server"
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SHOULD_STRING("server");
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const auto serverAddress = serverObject["server"].toString();
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ssObject.address = serverAddress;
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// port selection:
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// normal: use global settings
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// overriding: use current config
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if (serverObject["port"].isUndefined())
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{
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ssObject.port = port;
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}
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else if (auto currPort = serverObject["port"].toInt(-1); (currPort >= 0 && currPort <= 65535))
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{
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ssObject.port = currPort;
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}
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else
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{
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ssObject.port = port;
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}
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// name decision:
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// untitled: using server:port as name
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// entitled: using given name
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QString nodeName;
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if (serverObject["remarks"].isUndefined())
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{
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nodeName = QString("%1:%2").arg(ssObject.address).arg(ssObject.port);
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}
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else if (serverObject["remarks"].isString())
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{
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nodeName = serverObject["remarks"].toString();
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}
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else
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{
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nodeName = QString("%1:%2").arg(ssObject.address).arg(ssObject.port);
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}
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// ratio decision:
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// unspecified: ratio = 1
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// specified: use given value
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double ratio = 1.0;
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if (auto currRatio = serverObject["ratio"].toDouble(-1.0); currRatio != -1.0)
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{
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ratio = currRatio;
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}
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// else if (!serverObject["ratio"].isUndefined())
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// {
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// //*logList << QObject::tr("Invalid ratio encountered. using fallback value.");
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// }
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// format the total name of the node.
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const auto finalName = QV2RAY_SSD_DEFAULT_NAME_PATTERN.arg(*groupName, nodeName).arg(ratio);
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// appending to the total list
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QJsonObject root;
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QJsonArray outbounds;
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QJsonObject inbound = inbounds::GenerateInboundEntry();
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outbounds.append(outbounds::GenerateOutboundEntry(OUTBOUND_TAG_PROXY, "shadowsocks", outbounds::GenerateShadowSocksOUT({ ssObject }), {}));
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root["outbounds"] = outbounds;
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root["inbounds"] = QJsonArray{ inbound };
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serverList.append({ finalName, root });
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}
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// returns the current result
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return serverList;
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}
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#undef MUST_EXIST
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#undef MUST_PORT
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#undef MUST_ARRAY
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#undef MUST_STRING
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#undef SERVER_SHOULD_BE_OBJECT
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#undef SHOULD_EXIST
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#undef SHOULD_STRING
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} // namespace amnezia::serialization::ssd
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