diff options
Diffstat (limited to 'logic')
| -rw-r--r-- | logic/net/FileDownload.cpp | 9 | ||||
| -rw-r--r-- | logic/updater/DownloadUpdateTask.cpp | 398 | ||||
| -rw-r--r-- | logic/updater/DownloadUpdateTask.h | 192 | ||||
| -rw-r--r-- | logic/updater/UpdateChecker.cpp | 247 | ||||
| -rw-r--r-- | logic/updater/UpdateChecker.h | 106 |
5 files changed, 952 insertions, 0 deletions
diff --git a/logic/net/FileDownload.cpp b/logic/net/FileDownload.cpp index 239af351..38f0b9c2 100644 --- a/logic/net/FileDownload.cpp +++ b/logic/net/FileDownload.cpp @@ -63,6 +63,15 @@ void FileDownload::start() request.setRawHeader(QString("If-None-Match").toLatin1(), m_expected_md5.toLatin1()); request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Uncached)"); + // Go ahead and try to open the file. + // If we don't do this, empty files won't be created, which breaks the updater. + // Plus, this way, we don't end up starting a download for a file we can't open. + if (!m_output_file.open(QIODevice::WriteOnly)) + { + emit failed(index_within_job); + return; + } + auto worker = MMC->qnam(); QNetworkReply *rep = worker->get(request); diff --git a/logic/updater/DownloadUpdateTask.cpp b/logic/updater/DownloadUpdateTask.cpp new file mode 100644 index 00000000..ef975c93 --- /dev/null +++ b/logic/updater/DownloadUpdateTask.cpp @@ -0,0 +1,398 @@ +/* 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 "DownloadUpdateTask.h" + +#include "MultiMC.h" +#include "logic/updater/UpdateChecker.h" +#include "logic/net/NetJob.h" +#include "pathutils.h" + +#include <QFile> +#include <QTemporaryDir> +#include <QCryptographicHash> + +#include <QDomDocument> + + +DownloadUpdateTask::DownloadUpdateTask(QString repoUrl, int versionId, QObject* parent) : + Task(parent) +{ + m_cVersionId = MMC->version().build; + + m_nRepoUrl = repoUrl; + m_nVersionId = versionId; + + m_updateFilesDir.setAutoRemove(false); +} + +void DownloadUpdateTask::executeTask() +{ + // GO! + // This will call the next step when it's done. + findCurrentVersionInfo(); +} + +void DownloadUpdateTask::findCurrentVersionInfo() +{ + setStatus(tr("Finding information about the current version.")); + + auto checker = MMC->updateChecker(); + + // This runs after we've tried loading the channel list. + // If the channel list doesn't need to be loaded, this will be called immediately. + // If the channel list does need to be loaded, this will be called when it's done. + auto processFunc = [this, &checker] () -> void + { + // Now, check the channel list again. + if (checker->hasChannels()) + { + // We still couldn't load the channel list. Give up. Call loadVersionInfo and return. + QLOG_INFO() << "Reloading the channel list didn't work. Giving up."; + loadVersionInfo(); + return; + } + + QList<UpdateChecker::ChannelListEntry> channels = checker->getChannelList(); + QString channelId = MMC->version().channel; + + // Search through the channel list for a channel with the correct ID. + for (auto channel : channels) + { + if (channel.id == channelId) + { + QLOG_INFO() << "Found matching channel."; + m_cRepoUrl = channel.url; + break; + } + } + + // Now that we've done that, load version info. + loadVersionInfo(); + }; + + if (checker->hasChannels()) + { + // Load the channel list and wait for it to finish loading. + QLOG_INFO() << "No channel list entries found. Will try reloading it."; + + QObject::connect(checker.get(), &UpdateChecker::channelListLoaded, processFunc); + checker->updateChanList(); + } + else + { + processFunc(); + } +} + +void DownloadUpdateTask::loadVersionInfo() +{ + setStatus(tr("Loading version information.")); + + // Create the net job for loading version info. + NetJob* netJob = new NetJob("Version Info"); + + // Find the index URL. + QUrl newIndexUrl = QUrl(m_nRepoUrl).resolved(QString::number(m_nVersionId) + ".json"); + + // Add a net action to download the version info for the version we're updating to. + netJob->addNetAction(ByteArrayDownload::make(newIndexUrl)); + + // If we have a current version URL, get that one too. + if (!m_cRepoUrl.isEmpty()) + { + QUrl cIndexUrl = QUrl(m_cRepoUrl).resolved(QString::number(m_cVersionId) + ".json"); + netJob->addNetAction(ByteArrayDownload::make(cIndexUrl)); + } + + // Connect slots so we know when it's done. + QObject::connect(netJob, &NetJob::succeeded, this, &DownloadUpdateTask::vinfoDownloadFinished); + QObject::connect(netJob, &NetJob::failed, this, &DownloadUpdateTask::vinfoDownloadFailed); + + // Store the NetJob in a class member. We don't want to lose it! + m_vinfoNetJob.reset(netJob); + + // Finally, we start the network job and the thread's event loop to wait for it to finish. + netJob->start(); +} + +void DownloadUpdateTask::vinfoDownloadFinished() +{ + // Both downloads succeeded. OK. Parse stuff. + parseDownloadedVersionInfo(); +} + +void DownloadUpdateTask::vinfoDownloadFailed() +{ + // Something failed. We really need the second download (current version info), so parse downloads anyways as long as the first one succeeded. + if (m_vinfoNetJob->first()->m_status != Job_Failed) + { + parseDownloadedVersionInfo(); + return; + } + + // TODO: Give a more detailed error message. + QLOG_ERROR() << "Failed to download version info files."; + emitFailed(tr("Failed to download version info files.")); +} + +void DownloadUpdateTask::parseDownloadedVersionInfo() +{ + setStatus(tr("Reading file lists.")); + + parseVersionInfo(NEW_VERSION, &m_nVersionFileList); + + // If there is a second entry in the network job's list, load it as the current version's info. + if (m_vinfoNetJob->size() >= 2 && m_vinfoNetJob->operator[](1)->m_status != Job_Failed) + { + parseVersionInfo(CURRENT_VERSION, &m_cVersionFileList); + } + + // We don't need this any more. + m_vinfoNetJob.reset(); + + // Now that we're done loading version info, we can move on to the next step. Process file lists and download files. + processFileLists(); +} + +void DownloadUpdateTask::parseVersionInfo(VersionInfoFileEnum vfile, VersionFileList* list) +{ + if (vfile == CURRENT_VERSION) setStatus(tr("Reading file list for current version.")); + else if (vfile == NEW_VERSION) setStatus(tr("Reading file list for new version.")); + + QLOG_DEBUG() << "Reading file list for" << (vfile == NEW_VERSION ? "new" : "current") << "version."; + + QByteArray data; + { + ByteArrayDownloadPtr dl = std::dynamic_pointer_cast<ByteArrayDownload>( + vfile == NEW_VERSION ? m_vinfoNetJob->first() : m_vinfoNetJob->operator[](1)); + data = dl->m_data; + } + + QJsonParseError jsonError; + QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &jsonError); + if (jsonError.error != QJsonParseError::NoError) + { + QLOG_ERROR() << "Failed to parse version info JSON:" << jsonError.errorString() << "at" << jsonError.offset; + return; + } + + QJsonObject json = jsonDoc.object(); + + QLOG_DEBUG() << "Loading version info from JSON."; + QJsonArray filesArray = json.value("Files").toArray(); + for (QJsonValue fileValue : filesArray) + { + QJsonObject fileObj = fileValue.toObject(); + + VersionFileEntry file{ + fileObj.value("Path").toString(), + fileObj.value("Perms").toVariant().toInt(), + FileSourceList(), + fileObj.value("MD5").toString(), + }; + QLOG_DEBUG() << "File" << file.path << "with perms" << file.mode; + + QJsonArray sourceArray = fileObj.value("Sources").toArray(); + for (QJsonValue val : sourceArray) + { + QJsonObject sourceObj = val.toObject(); + + QString type = sourceObj.value("SourceType").toString(); + if (type == "http") + { + file.sources.append(FileSource("http", sourceObj.value("Url").toString())); + } + else if (type == "httpc") + { + file.sources.append(FileSource("httpc", sourceObj.value("Url").toString(), sourceObj.value("CompressionType").toString())); + } + else + { + QLOG_WARN() << "Unknown source type" << type << "ignored."; + } + } + + QLOG_DEBUG() << "Loaded info for" << file.path; + + list->append(file); + } +} + +void DownloadUpdateTask::processFileLists() +{ + setStatus(tr("Processing file lists. Figuring out how to install the update.")); + + // First, if we've loaded the current version's file list, we need to iterate through it and + // delete anything in the current one version's list that isn't in the new version's list. + for (VersionFileEntry entry : m_cVersionFileList) + { + for (VersionFileEntry newEntry : m_nVersionFileList) + { + if (newEntry.path == entry.path) + continue; + } + // If the loop reaches the end, we didn't find a match. Delete the file. + m_operationList.append(UpdateOperation::DeleteOp(entry.path)); + } + + // Create a network job for downloading files. + NetJob* netJob = new NetJob("Update Files"); + + // Next, check each file in MultiMC's folder and see if we need to update them. + for (VersionFileEntry entry : m_nVersionFileList) + { + // TODO: Let's not MD5sum a ton of files on the GUI thread. We should probably find a way to do this in the background. + QString fileMD5; + QFile entryFile(entry.path); + if (entryFile.open(QFile::ReadOnly)) + { + QCryptographicHash hash(QCryptographicHash::Md5); + hash.addData(entryFile.readAll()); + fileMD5 = hash.result().toHex(); + } + + if (!entryFile.exists() || fileMD5.isEmpty() || fileMD5 != entry.md5) + { + QLOG_DEBUG() << "Found file" << entry.path << "that needs updating."; + + // Go through the sources list and find one to use. + // TODO: Make a NetAction that takes a source list and tries each of them until one works. For now, we'll just use the first http one. + for (FileSource source : entry.sources) + { + if (source.type == "http") + { + QLOG_DEBUG() << "Will download" << entry.path << "from" << source.url; + + // Download it to updatedir/<filepath>-<md5> where filepath is the file's path with slashes replaced by underscores. + QString dlPath = PathCombine(m_updateFilesDir.path(), QString(entry.path).replace("/", "_")); + + // We need to download the file to the updatefiles folder and add a task to copy it to its install path. + FileDownloadPtr download = FileDownload::make(source.url, dlPath); + download->m_check_md5 = true; + download->m_expected_md5 = entry.md5; + netJob->addNetAction(download); + + // Now add a copy operation to our operations list to install the file. + m_operationList.append(UpdateOperation::CopyOp(dlPath, entry.path, entry.mode)); + } + } + } + } + + // Add listeners to wait for the downloads to finish. + QObject::connect(netJob, &NetJob::succeeded, this, &DownloadUpdateTask::fileDownloadFinished); + QObject::connect(netJob, &NetJob::progress, this, &DownloadUpdateTask::fileDownloadProgressChanged); + QObject::connect(netJob, &NetJob::failed, this, &DownloadUpdateTask::fileDownloadFailed); + + // Now start the download. + setStatus(tr("Downloading %1 update files.").arg(QString::number(netJob->size()))); + QLOG_DEBUG() << "Begin downloading update files to" << m_updateFilesDir.path(); + m_filesNetJob.reset(netJob); + netJob->start(); + + writeInstallScript(m_operationList, PathCombine(m_updateFilesDir.path(), "file_list.xml")); +} + +void DownloadUpdateTask::writeInstallScript(UpdateOperationList& opsList, QString scriptFile) +{ + // Build the base structure of the XML document. + QDomDocument doc; + + QDomElement root = doc.createElement("update"); + root.setAttribute("version", "3"); + doc.appendChild(root); + + QDomElement installFiles = doc.createElement("install"); + root.appendChild(installFiles); + + QDomElement removeFiles = doc.createElement("uninstall"); + root.appendChild(removeFiles); + + // Write the operation list to the XML document. + for (UpdateOperation op : opsList) + { + QDomElement file = doc.createElement("file"); + + switch (op.type) + { + case UpdateOperation::OP_COPY: + { + // Install the file. + QDomElement name = doc.createElement("source"); + QDomElement path = doc.createElement("dest"); + QDomElement mode = doc.createElement("mode"); + name.appendChild(doc.createTextNode(op.file)); + path.appendChild(doc.createTextNode(op.dest)); + // We need to add a 0 at the beginning here, because Qt doesn't convert to octal correctly. + mode.appendChild(doc.createTextNode("0" + QString::number(op.mode, 8))); + file.appendChild(name); + file.appendChild(path); + file.appendChild(mode); + installFiles.appendChild(file); + QLOG_DEBUG() << "Will install file" << op.file; + } + break; + + case UpdateOperation::OP_DELETE: + { + // Delete the file. + file.appendChild(doc.createTextNode(op.file)); + removeFiles.appendChild(file); + QLOG_DEBUG() << "Will remove file" << op.file; + } + break; + + default: + QLOG_WARN() << "Can't write update operation of type" << op.type << "to file. Not implemented."; + continue; + } + } + + // Write the XML document to the file. + QFile outFile(scriptFile); + + if (outFile.open(QIODevice::WriteOnly)) + { + outFile.write(doc.toByteArray()); + } + else + { + emitFailed(tr("Failed to write update script file.")); + } +} + +void DownloadUpdateTask::fileDownloadFinished() +{ + emitSucceeded(); +} + +void DownloadUpdateTask::fileDownloadFailed() +{ + // TODO: Give more info about the failure. + QLOG_ERROR() << "Failed to download update files."; + emitFailed(tr("Failed to download update files.")); +} + +void DownloadUpdateTask::fileDownloadProgressChanged(qint64 current, qint64 total) +{ + setProgress((int)(((float)current / (float)total)*100)); +} + +QString DownloadUpdateTask::updateFilesDir() +{ + return m_updateFilesDir.path(); +} + diff --git a/logic/updater/DownloadUpdateTask.h b/logic/updater/DownloadUpdateTask.h new file mode 100644 index 00000000..f5b23d12 --- /dev/null +++ b/logic/updater/DownloadUpdateTask.h @@ -0,0 +1,192 @@ +/* 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. + */ + +#pragma once + +#include "logic/tasks/Task.h" +#include "logic/net/NetJob.h" + +/*! + * The DownloadUpdateTask is a task that takes a given version ID and repository URL, + * downloads that version's files from the repository, and prepares to install them. + */ +class DownloadUpdateTask : public Task +{ + Q_OBJECT + +public: + explicit DownloadUpdateTask(QString repoUrl, int versionId, QObject* parent=0); + + /*! + * Gets the directory that contains the update files. + */ + QString updateFilesDir(); + +protected: + // TODO: We should probably put these data structures into a separate header... + + /*! + * Struct that describes an entry in a VersionFileEntry's `Sources` list. + */ + struct FileSource + { + FileSource(QString type, QString url, QString compression="") + { + this->type = type; + this->url = url; + this->compressionType = compression; + } + + QString type; + QString url; + QString compressionType; + }; + + typedef QList<FileSource> FileSourceList; + + /*! + * Structure that describes an entry in a GoUpdate version's `Files` list. + */ + struct VersionFileEntry + { + QString path; + int mode; + FileSourceList sources; + QString md5; + }; + + typedef QList<VersionFileEntry> VersionFileList; + + + /*! + * Structure that describes an operation to perform when installing updates. + */ + struct UpdateOperation + { + static UpdateOperation CopyOp(QString fsource, QString fdest, int fmode=0644) { return UpdateOperation{OP_COPY, fsource, fdest, fmode}; } + static UpdateOperation MoveOp(QString fsource, QString fdest, int fmode=0644) { return UpdateOperation{OP_MOVE, fsource, fdest, fmode}; } + static UpdateOperation DeleteOp(QString file) { return UpdateOperation{OP_DELETE, file, "", 0644}; } + static UpdateOperation ChmodOp(QString file, int fmode) { return UpdateOperation{OP_CHMOD, file, "", fmode}; } + + //! Specifies the type of operation that this is. + enum Type + { + OP_COPY, + OP_DELETE, + OP_MOVE, + OP_CHMOD, + } type; + + //! The file to operate on. If this is a DELETE or CHMOD operation, this is the file that will be modified. + QString file; + + //! The destination file. If this is a DELETE or CHMOD operation, this field will be ignored. + QString dest; + + //! The mode to change the source file to. Ignored if this isn't a CHMOD operation. + int mode; + + // Yeah yeah, polymorphism blah blah inheritance, blah blah object oriented. I'm lazy, OK? + }; + + typedef QList<UpdateOperation> UpdateOperationList; + + /*! + * Used for arguments to parseVersionInfo and friends to specify which version info file to parse. + */ + enum VersionInfoFileEnum { NEW_VERSION, CURRENT_VERSION }; + + + //! Entry point for tasks. + virtual void executeTask(); + + /*! + * Attempts to find the version ID and repository URL for the current version. + * The function will look up the repository URL in the UpdateChecker's channel list. + * If the repository URL can't be found, this function will return false. + */ + virtual void findCurrentVersionInfo(); + + /*! + * Downloads the version info files from the repository. + * The files for both the current build, and the build that we're updating to need to be downloaded. + * If the current version's info file can't be found, MultiMC will not delete files that + * were removed between versions. It will still replace files that have changed, however. + * Note that although the repository URL for the current version is not given to the update task, + * the task will attempt to look it up in the UpdateChecker's channel list. + * If an error occurs here, the function will call emitFailed and return false. + */ + virtual void loadVersionInfo(); + + /*! + * This function is called when version information is finished downloading. + * This handles parsing the JSON downloaded by the version info network job and then calls processFileLists. + * Note that this function will sometimes be called even if the version info download emits failed. If + * we couldn't download the current version's info file, we can still update. This will be called even if the + * current version's info file fails to download, as long as the new version's info file succeeded. + */ + virtual void parseDownloadedVersionInfo(); + + /*! + * Loads the file list from the given version info JSON object into the given list. + */ + virtual void parseVersionInfo(VersionInfoFileEnum vfile, VersionFileList* list); + + /*! + * Takes a list of file entries for the current version's files and the new version's files + * and populates the downloadList and operationList with information about how to download and install the update. + */ + virtual void processFileLists(); + + /*! + * Takes the operations list and writes an install script for the updater to the update files directory. + */ + virtual void writeInstallScript(UpdateOperationList& opsList, QString scriptFile); + + VersionFileList m_downloadList; + UpdateOperationList m_operationList; + + VersionFileList m_nVersionFileList; + VersionFileList m_cVersionFileList; + + //! Network job for downloading version info files. + NetJobPtr m_vinfoNetJob; + + //! Network job for downloading update files. + NetJobPtr m_filesNetJob; + + // Version ID and repo URL for the new version. + int m_nVersionId; + QString m_nRepoUrl; + + // Version ID and repo URL for the currently installed version. + int m_cVersionId; + QString m_cRepoUrl; + + /*! + * Temporary directory to store update files in. + * This will be set to not auto delete. Task will fail if this fails to be created. + */ + QTemporaryDir m_updateFilesDir; + +protected slots: + void vinfoDownloadFinished(); + void vinfoDownloadFailed(); + + void fileDownloadFinished(); + void fileDownloadFailed(); + void fileDownloadProgressChanged(qint64 current, qint64 total); +}; + diff --git a/logic/updater/UpdateChecker.cpp b/logic/updater/UpdateChecker.cpp new file mode 100644 index 00000000..5ff1898e --- /dev/null +++ b/logic/updater/UpdateChecker.cpp @@ -0,0 +1,247 @@ +/* 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; +} + +QList<UpdateChecker::ChannelListEntry> UpdateChecker::getChannelList() const +{ + return m_channels; +} + +bool UpdateChecker::hasChannels() const +{ + return m_channels.isEmpty(); +} + +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(); + + emit channelListLoaded(); +} + +void UpdateChecker::chanListDownloadFailed() +{ + m_chanListLoading = false; + QLOG_ERROR() << "Failed to download channel list."; + emit channelListLoaded(); +} + diff --git a/logic/updater/UpdateChecker.h b/logic/updater/UpdateChecker.h new file mode 100644 index 00000000..59fb8e47 --- /dev/null +++ b/logic/updater/UpdateChecker.h @@ -0,0 +1,106 @@ +/* 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. + */ + +#pragma once + +#include "logic/net/NetJob.h" + +#include <QUrl> + +class UpdateChecker : public QObject +{ + Q_OBJECT + +public: + UpdateChecker(); + void checkForUpdate(); + + /*! + * Causes the update checker to download the channel list from the URL specified in config.h (generated by CMake). + * If this isn't called before checkForUpdate(), it will automatically be called. + */ + void updateChanList(); + + /*! + * An entry in the channel list. + */ + struct ChannelListEntry + { + QString id; + QString name; + QString description; + QString url; + }; + + /*! + * Returns a the current channel list. + * If the channel list hasn't been loaded, this list will be empty. + */ + QList<ChannelListEntry> getChannelList() const; + + /*! + * Returns true if the channel list is empty. + */ + bool hasChannels() const; + +signals: + //! Signal emitted when an update is available. Passes the URL for the repo and the ID and name for the version. + void updateAvailable(QString repoUrl, QString versionName, int versionId); + + //! Signal emitted when the channel list finishes loading or fails to load. + void channelListLoaded(); + +private slots: + void updateCheckFinished(); + void updateCheckFailed(); + + void chanListDownloadFinished(); + void chanListDownloadFailed(); + +private: + NetJobPtr indexJob; + NetJobPtr chanListJob; + + QString m_repoUrl; + + QString m_channelListUrl; + QString m_currentChannel; + + QList<ChannelListEntry> m_channels; + + /*! + * True while the system is checking for updates. + * If checkForUpdate is called while this is true, it will be ignored. + */ + bool m_updateChecking; + + /*! + * True if the channel list has loaded. + * If this is false, trying to check for updates will call updateChanList first. + */ + bool m_chanListLoaded; + + /*! + * Set to true while the channel list is currently loading. + */ + bool m_chanListLoading; + + /*! + * Set to true when checkForUpdate is called while the channel list isn't loaded. + * When the channel list finishes loading, if this is true, the update checker will check for updates. + */ + bool m_checkUpdateWaiting; +}; + |