mirror of https://github.com/nextcloud/desktop
105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/*
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* Copyright (C) by Oleksandr Zolotov <alex@nextcloud.com>
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*
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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 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "customstateprovideripc.h"
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#include "common/shellextensionutils.h"
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#include "ipccommon.h"
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#include <QJsonDocument>
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namespace {
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// we don't want to block the Explorer for too long (default is 30K, so we'd keep it at 10K, except QLocalSocket::waitForDisconnected())
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constexpr auto socketTimeoutMs = 10000;
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}
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namespace VfsShellExtensions {
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CustomStateProviderIpc::~CustomStateProviderIpc()
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{
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disconnectSocketFromServer();
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}
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QVariantList CustomStateProviderIpc::fetchCustomStatesForFile(const QString &filePath)
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{
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const auto sendMessageAndReadyRead = [this](QVariantMap &message) {
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_localSocket.write(VfsShellExtensions::Protocol::createJsonMessage(message));
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return _localSocket.waitForBytesWritten(socketTimeoutMs) && _localSocket.waitForReadyRead(socketTimeoutMs);
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};
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const auto mainServerName = getServerNameForPath(filePath);
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if (mainServerName.isEmpty()) {
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return {};
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}
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// #1 Connect to the local server
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if (!connectSocketToServer(mainServerName)) {
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return {};
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}
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auto messageRequestCustomStatesForFile = QVariantMap {
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{
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VfsShellExtensions::Protocol::CustomStateProviderRequestKey,
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QVariantMap {
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{ VfsShellExtensions::Protocol::FilePathKey, filePath }
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}
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}
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};
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// #2 Request custom states for a 'filePath'
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if (!sendMessageAndReadyRead(messageRequestCustomStatesForFile)) {
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return {};
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}
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// #3 Receive custom states as JSON
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const auto message = QJsonDocument::fromJson(_localSocket.readAll()).toVariant().toMap();
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if (!VfsShellExtensions::Protocol::validateProtocolVersion(message) || !message.contains(VfsShellExtensions::Protocol::CustomStateDataKey)) {
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return {};
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}
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const auto customStates = message.value(VfsShellExtensions::Protocol::CustomStateDataKey).toMap().value(VfsShellExtensions::Protocol::CustomStateStatesKey).toList();
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disconnectSocketFromServer();
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return customStates;
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}
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bool CustomStateProviderIpc::disconnectSocketFromServer()
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{
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const auto isConnectedOrConnecting = _localSocket.state() == QLocalSocket::ConnectedState || _localSocket.state() == QLocalSocket::ConnectingState;
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if (isConnectedOrConnecting) {
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_localSocket.disconnectFromServer();
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const auto isNotConnected = _localSocket.state() == QLocalSocket::UnconnectedState || _localSocket.state() == QLocalSocket::ClosingState;
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return isNotConnected || _localSocket.waitForDisconnected();
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}
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return true;
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}
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QString CustomStateProviderIpc::getServerNameForPath(const QString &filePath)
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{
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if (!overrideServerName.isEmpty()) {
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return overrideServerName;
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}
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return findServerNameForPath(filePath);
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}
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bool CustomStateProviderIpc::connectSocketToServer(const QString &serverName)
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{
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if (!disconnectSocketFromServer()) {
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return false;
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}
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_localSocket.setServerName(serverName);
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_localSocket.connectToServer();
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return _localSocket.state() == QLocalSocket::ConnectedState || _localSocket.waitForConnected(socketTimeoutMs);
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}
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QString CustomStateProviderIpc::overrideServerName = {};
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}
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