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-rw-r--r--logic/updater/UpdateChecker.cpp234
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diff --git a/logic/updater/UpdateChecker.cpp b/logic/updater/UpdateChecker.cpp
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+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "UpdateChecker.h"
+
+#include "MultiMC.h"
+
+#include "config.h"
+#include "logger/QsLog.h"
+
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonValue>
+
+#define API_VERSION 0
+#define CHANLIST_FORMAT 0
+
+UpdateChecker::UpdateChecker()
+{
+ m_currentChannel = VERSION_CHANNEL;
+ m_channelListUrl = CHANLIST_URL;
+ m_updateChecking = false;
+ m_chanListLoading = false;
+ m_checkUpdateWaiting = false;
+ m_chanListLoaded = false;
+}
+
+void UpdateChecker::checkForUpdate()
+{
+ QLOG_DEBUG() << "Checking for updates.";
+
+ // If the channel list hasn't loaded yet, load it and defer checking for updates until later.
+ if (!m_chanListLoaded)
+ {
+ QLOG_DEBUG() << "Channel list isn't loaded yet. Loading channel list and deferring update check.";
+ m_checkUpdateWaiting = true;
+ updateChanList();
+ return;
+ }
+
+ if (m_updateChecking)
+ {
+ QLOG_DEBUG() << "Ignoring update check request. Already checking for updates.";
+ return;
+ }
+
+ m_updateChecking = true;
+
+ // Get the URL for the channel we're using.
+ // TODO: Allow user to select channels. For now, we'll just use the current channel.
+ QString updateChannel = m_currentChannel;
+
+ // Find the desired channel within the channel list and get its repo URL. If if cannot be found, error.
+ m_repoUrl = "";
+ for (ChannelListEntry entry : m_channels)
+ {
+ if (entry.id == updateChannel)
+ m_repoUrl = entry.url;
+ }
+
+ // If we didn't find our channel, error.
+ if (m_repoUrl.isEmpty())
+ {
+ emit updateCheckFailed();
+ return;
+ }
+
+ QUrl indexUrl = QUrl(m_repoUrl).resolved(QUrl("index.json"));
+
+ auto job = new NetJob("GoUpdate Repository Index");
+ job->addNetAction(ByteArrayDownload::make(indexUrl));
+ connect(job, SIGNAL(succeeded()), SLOT(updateCheckFinished()));
+ connect(job, SIGNAL(failed()), SLOT(updateCheckFailed()));
+ indexJob.reset(job);
+ job->start();
+}
+
+void UpdateChecker::updateCheckFinished()
+{
+ QLOG_DEBUG() << "Finished downloading repo index. Checking for new versions.";
+
+ QJsonParseError jsonError;
+ QByteArray data;
+ {
+ ByteArrayDownloadPtr dl = std::dynamic_pointer_cast<ByteArrayDownload>(indexJob->first());
+ data = dl->m_data;
+ indexJob.reset();
+ }
+
+ QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &jsonError);
+ if (jsonError.error != QJsonParseError::NoError || !jsonDoc.isObject())
+ {
+ QLOG_ERROR() << "Failed to parse GoUpdate repository index. JSON error" << jsonError.errorString() << "at offset" << jsonError.offset;
+ return;
+ }
+
+ QJsonObject object = jsonDoc.object();
+
+ bool success = false;
+ int apiVersion = object.value("ApiVersion").toVariant().toInt(&success);
+ if (apiVersion != API_VERSION || !success)
+ {
+ QLOG_ERROR() << "Failed to check for updates. API version mismatch. We're using" << API_VERSION << "server has" << apiVersion;
+ return;
+ }
+
+ QLOG_DEBUG() << "Processing repository version list.";
+ QJsonObject newestVersion;
+ QJsonArray versions = object.value("Versions").toArray();
+ for (QJsonValue versionVal : versions)
+ {
+ QJsonObject version = versionVal.toObject();
+ if (newestVersion.value("Id").toVariant().toInt() < version.value("Id").toVariant().toInt())
+ {
+ QLOG_DEBUG() << "Found newer version with ID" << version.value("Id").toVariant().toInt();
+ newestVersion = version;
+ }
+ }
+
+ // We've got the version with the greatest ID number. Now compare it to our current build number and update if they're different.
+ int newBuildNumber = newestVersion.value("Id").toVariant().toInt();
+ if (newBuildNumber != MMC->version().build)
+ {
+ // Update!
+ emit updateAvailable(m_repoUrl, newestVersion.value("Name").toVariant().toString(), newBuildNumber);
+ }
+
+ m_updateChecking = false;
+}
+
+void UpdateChecker::updateCheckFailed()
+{
+ // TODO: log errors better
+ QLOG_ERROR() << "Update check failed for reasons unknown.";
+}
+
+void UpdateChecker::updateChanList()
+{
+ QLOG_DEBUG() << "Loading the channel list.";
+
+ if (m_channelListUrl.isEmpty())
+ {
+ QLOG_ERROR() << "Failed to update channel list. No channel list URL set."
+ << "If you'd like to use MultiMC's update system, please pass the channel list URL to CMake at compile time.";
+ return;
+ }
+
+ m_chanListLoading = true;
+ NetJob* job = new NetJob("Update System Channel List");
+ job->addNetAction(ByteArrayDownload::make(QUrl(m_channelListUrl)));
+ QObject::connect(job, &NetJob::succeeded, this, &UpdateChecker::chanListDownloadFinished);
+ QObject::connect(job, &NetJob::failed, this, &UpdateChecker::chanListDownloadFailed);
+ chanListJob.reset(job);
+ job->start();
+}
+
+void UpdateChecker::chanListDownloadFinished()
+{
+ QByteArray data;
+ {
+ ByteArrayDownloadPtr dl = std::dynamic_pointer_cast<ByteArrayDownload>(chanListJob->first());
+ data = dl->m_data;
+ chanListJob.reset();
+ }
+
+ QJsonParseError jsonError;
+ QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &jsonError);
+ if (jsonError.error != QJsonParseError::NoError)
+ {
+ // TODO: Report errors to the user.
+ QLOG_ERROR() << "Failed to parse channel list JSON:" << jsonError.errorString() << "at" << jsonError.offset;
+ return;
+ }
+
+ QJsonObject object = jsonDoc.object();
+
+ bool success = false;
+ int formatVersion = object.value("format_version").toVariant().toInt(&success);
+ if (formatVersion != CHANLIST_FORMAT || !success)
+ {
+ QLOG_ERROR() << "Failed to check for updates. Channel list format version mismatch. We're using" << CHANLIST_FORMAT << "server has" << formatVersion;
+ return;
+ }
+
+ // Load channels into a temporary array.
+ QList<ChannelListEntry> loadedChannels;
+ QJsonArray channelArray = object.value("channels").toArray();
+ for (QJsonValue chanVal : channelArray)
+ {
+ QJsonObject channelObj = chanVal.toObject();
+ ChannelListEntry entry{
+ channelObj.value("id").toVariant().toString(),
+ channelObj.value("name").toVariant().toString(),
+ channelObj.value("description").toVariant().toString(),
+ channelObj.value("url").toVariant().toString()
+ };
+ if (entry.id.isEmpty() || entry.name.isEmpty() || entry.url.isEmpty())
+ {
+ QLOG_ERROR() << "Channel list entry with empty ID, name, or URL. Skipping.";
+ continue;
+ }
+ loadedChannels.append(entry);
+ }
+
+ // Swap the channel list we just loaded into the object's channel list.
+ m_channels.swap(loadedChannels);
+
+ m_chanListLoading = false;
+ m_chanListLoaded = true;
+ QLOG_INFO() << "Successfully loaded UpdateChecker channel list.";
+
+ // If we're waiting to check for updates, do that now.
+ if (m_checkUpdateWaiting)
+ checkForUpdate();
+}
+
+void UpdateChecker::chanListDownloadFailed()
+{
+ m_chanListLoading = false;
+ QLOG_ERROR() << "Failed to download channel list.";
+}
+