Robin Davies
1396 lines
42 KiB
C++
1396 lines
42 KiB
C++
// Copyright (c) 2024 Robin Davies
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "Updater.hpp"
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#include "util.hpp"
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#include "json.hpp"
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#include "config.hpp"
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#include <sys/eventfd.h>
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#include <unistd.h>
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#include <stdexcept>
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#include <chrono>
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#include <poll.h>
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#include "Lv2Log.hpp"
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#include "SysExec.hpp"
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#include "json_variant.hpp"
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#include "ss.hpp"
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#include "Lv2Log.hpp"
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#include <algorithm>
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#include "UpdaterSecurity.hpp"
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#include "SysExec.hpp"
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#include "ofstream_synced.hpp"
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#include <fstream>
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#include "TemporaryFile.hpp"
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#include <limits>
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using namespace pipedal;
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namespace fs = std::filesystem;
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#undef TEST_UPDATE
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#ifndef DEBUG
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#undef TEST_UPDATE // do NOT leat this leak into a production build!
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#endif
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#include "GithubResponseHeaders.hpp"
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class pipedal::UpdaterImpl : public Updater
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{
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public:
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UpdaterImpl(const std::filesystem::path &workingDirectory);
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UpdaterImpl() : UpdaterImpl("/var/pipedal/updates") {}
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virtual ~UpdaterImpl() noexcept;
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virtual void SetUpdateListener(UpdateListener &&listener) override;
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virtual void Start() override;
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virtual void Stop() override;
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virtual void CheckNow() override;
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virtual UpdatePolicyT GetUpdatePolicy() override;
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virtual void SetUpdatePolicy(UpdatePolicyT updatePolicy) override;
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virtual void ForceUpdateCheck() override;
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virtual void DownloadUpdate(const std::string &url, std::filesystem::path *file, std::filesystem::path *signatureFile) override;
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virtual UpdateStatus GetCurrentStatus() const override;
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virtual UpdateStatus GetReleaseGeneratorStatus() override;
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private:
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std::filesystem::path workingDirectory;
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std::filesystem::path updateStatusCacheFile;
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std::filesystem::path githubResponseHeaderFilename;
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GithubResponseHeaders githubResponseHeaders;
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using clock = std::chrono::steady_clock;
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void SetCachedUpdateStatus(UpdateStatus &updateStatus);
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UpdateStatus GetCachedUpdateStatus();
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void RetryAfter(clock::duration delay);
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template <typename REP, typename PERIOD>
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void RetryAfter(std::chrono::duration<REP, PERIOD> duration)
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{
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RetryAfter(std::chrono::duration_cast<clock::duration>(duration));
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}
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void SaveRetryTime(const std::chrono::system_clock::time_point &time);
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clock::time_point LoadRetryTime();
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std::string GetUpdateFilename(const std::string &url);
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std::string GetSignatureUrl(const std::string &url);
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UpdatePolicyT updatePolicy = UpdatePolicyT::ReleaseOrBeta;
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using UpdateReleasePredicate = std::function<bool(const GithubRelease &githubRelease)>;
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UpdateRelease getUpdateRelease(
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const std::vector<GithubRelease> &githubReleases,
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const std::string ¤tVersion,
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const UpdateReleasePredicate &predicate);
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UpdateStatus cachedUpdateStatus;
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bool stopped = false;
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int event_reader = -1;
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int event_writer = -1;
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void ThreadProc();
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UpdateStatus DoUpdate(bool forReleaseGenerator);
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void CheckForUpdate(bool useCache);
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UpdateListener listener;
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std::unique_ptr<std::thread> thread;
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std::mutex mutex;
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bool hasInfo = false;
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UpdateStatus currentResult;
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static clock::duration updateRate;
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clock::time_point updateRetryTime;
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};
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Updater::ptr Updater::Create()
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{
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return std::make_unique<UpdaterImpl>();
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}
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Updater::ptr Updater::Create(const std::filesystem::path &workingDirectory)
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{
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return std::make_unique<UpdaterImpl>(workingDirectory);
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}
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static constexpr uint64_t CLOSE_EVENT = 0;
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static constexpr uint64_t CHECK_NOW_EVENT = 1;
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static constexpr uint64_t UNCACHED_CHECK_NOW_EVENT = 2;
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UpdaterImpl::clock::duration UpdaterImpl::updateRate = std::chrono::duration_cast<UpdaterImpl::clock::duration>(std::chrono::days(1));
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static std::chrono::system_clock::duration CACHE_DURATION = std::chrono::duration_cast<std::chrono::system_clock::duration>(std::chrono::minutes(30));
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std::mutex cacheMutex;
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UpdateStatus UpdaterImpl::GetCachedUpdateStatus()
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{
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std::lock_guard lock{cacheMutex};
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try
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{
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if (std::filesystem::exists(updateStatusCacheFile))
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{
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std::ifstream f{updateStatusCacheFile};
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if (f.is_open())
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{
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json_reader reader(f);
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UpdateStatus status;
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reader.read(&status);
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// cached curruent version might come from a different version.
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status.UpdateForCurrentVersion();
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return status;
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}
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}
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}
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catch (const std::exception &e)
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{
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Lv2Log::error(SS("Unable to read cached UpdateStatus. " << e.what()));
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}
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return UpdateStatus();
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}
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void UpdaterImpl::SetCachedUpdateStatus(UpdateStatus &updateStatus)
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{
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std::lock_guard lock{cacheMutex};
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updateStatus.LastUpdateTime(std::chrono::system_clock::now());
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try
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{
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pipedal::ofstream_synced f{updateStatusCacheFile};
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json_writer writer{f};
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writer.write(updateStatus);
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}
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catch (const std::exception &e)
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{
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Lv2Log::error(SS("Unable to write cached UpdateStatus. " << e.what()));
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}
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}
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UpdaterImpl::UpdaterImpl(const std::filesystem::path &workingDirectory)
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: workingDirectory(workingDirectory),
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updateStatusCacheFile(workingDirectory / "updateStatus.json"),
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githubResponseHeaderFilename(workingDirectory / "githubHeaders.json")
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{
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this->githubResponseHeaders.Load(githubResponseHeaderFilename);
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cachedUpdateStatus = GetCachedUpdateStatus();
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this->updatePolicy = cachedUpdateStatus.UpdatePolicy();
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currentResult = cachedUpdateStatus;
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}
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void UpdaterImpl::Start()
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{
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#if !ENABLE_AUTO_UPDATE
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return;
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#endif
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int fds[2];
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int rc = pipe(fds);
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if (rc != 0)
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{
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throw std::runtime_error("Updater: cant create event pipe.");
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}
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this->event_reader = fds[0];
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this->event_writer = fds[1];
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this->thread = std::make_unique<std::thread>([this]()
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{ ThreadProc(); });
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CheckNow();
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}
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UpdaterImpl::~UpdaterImpl()
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{
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try
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{
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Stop();
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}
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catch (const std::exception & /*ignored*/)
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{
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}
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}
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void UpdaterImpl::Stop()
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{
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if (stopped)
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{
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return;
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}
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#if !ENABLE_AUTO_UPDATE
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return;
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#endif
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stopped = true;
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if (event_writer != -1)
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{
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uint64_t value = CLOSE_EVENT;
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auto _ = write(this->event_writer, &value, sizeof(uint64_t));
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}
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if (thread)
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{
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thread->join();
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thread = nullptr;
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}
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if (event_reader != -1)
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{
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close(event_reader);
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}
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if (event_writer != -1)
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{
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close(event_writer);
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}
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}
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void UpdaterImpl::CheckNow()
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{
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uint64_t value = CHECK_NOW_EVENT;
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auto _ = write(this->event_writer, &value, sizeof(uint64_t));
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}
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void UpdaterImpl::SetUpdateListener(UpdateListener &&listener)
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{
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std::lock_guard lock{mutex};
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this->listener = listener;
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if (hasInfo)
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{
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listener(currentResult);
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}
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}
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static void LogNextStartTime(const std::chrono::steady_clock::time_point &clockTime)
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{
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using namespace std::chrono;
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// convert to system_clock;
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auto delay = clockTime - steady_clock::now();
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auto systemTime = system_clock::now() + duration_cast<system_clock::duration>(delay);
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auto t = system_clock::to_time_t(systemTime);
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Lv2Log::info(SS("Updater: Next update check at " << std::put_time(std::localtime(&t), "%Y-%m-%d %H:%M:%S")));
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}
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void UpdaterImpl::ThreadProc()
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{
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SetThreadName("UpdateMonitor");
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struct pollfd pfd;
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pfd.fd = this->event_reader;
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pfd.events = POLLIN;
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auto lastRetryTime = clock::time_point();
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this->updateRetryTime = LoadRetryTime();
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try
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{
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while (true)
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{
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if (updateRetryTime != lastRetryTime) // has retry time changed?
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{
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lastRetryTime = updateRetryTime;
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if (updateRetryTime > clock::now())
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{
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LogNextStartTime(updateRetryTime);
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}
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}
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auto clockDelay = this->updateRetryTime - clock::now();
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auto delayMs = std::chrono::duration_cast<std::chrono::milliseconds>(clockDelay).count();
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if (delayMs > std::numeric_limits<int>::max()) // could be as little as 32 seconds on a 16-bit int system.
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{
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delayMs = std::numeric_limits<int>::max();
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}
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int ret = poll(&pfd, 1, (int)delayMs); // 1000 ms timeout
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if (ret == -1)
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{
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Lv2Log::error("Updater: Poll error.");
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break;
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}
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else if (ret == 0)
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{
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if (clock::now() >= this->updateRetryTime)
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{
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CheckForUpdate(true);
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}
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}
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else
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{
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// Event occurred
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uint64_t value;
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ssize_t s = read(event_reader, &value, sizeof(uint64_t));
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if (s == sizeof(uint64_t))
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{
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if (value == CHECK_NOW_EVENT)
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{
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CheckForUpdate(true);
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}
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else if (value == UNCACHED_CHECK_NOW_EVENT)
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{
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CheckForUpdate(false);
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}
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else
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{
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break;
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}
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}
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}
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}
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}
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catch (const std::exception &e)
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{
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Lv2Log::error(SS("Updater: Service thread terminated abnormally: " << e.what()));
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}
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}
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GithubAsset::GithubAsset(json_variant &v)
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{
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auto o = v.as_object();
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this->name = o->at("name").as_string();
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this->browser_download_url = o->at("browser_download_url").as_string();
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this->updated_at = o->at("updated_at").as_string();
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}
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GithubRelease::GithubRelease(json_variant &v)
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{
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auto o = v.as_object();
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this->name = o->at("name").as_string();
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this->draft = o->at("draft").as_bool();
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this->prerelease = o->at("prerelease").as_bool();
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this->body = o->at("body").as_string();
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auto assets = o->at("assets").as_array();
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for (size_t i = 0; i < assets->size(); ++i)
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{
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auto &el = assets->at(i);
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this->assets.push_back(GithubAsset(el));
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}
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this->published_at = o->at("published_at").as_string();
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}
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static std::string justTheVersion(const std::string &assetName)
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{
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// eg. pipedal_1.2.41_arm64.deb
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auto t = split(assetName, '_');
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if (t.size() != 3)
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{
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throw std::runtime_error("Unable to parse version.");
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}
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return t[1];
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}
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static int compareVersions(const std::string &l, const std::string &r)
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{
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std::stringstream sl(l);
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std::stringstream sr(r);
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int majorL = -1, majorR = 1, minorL = -1,
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minorR = -1, buildL = -1, buildR = -1;
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sl >> majorL;
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sr >> majorR;
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if (majorL != majorR)
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{
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return (majorL < majorR) ? -1 : 1;
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}
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char discard;
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sl >> discard >> minorL;
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sr >> discard >> minorR;
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if (minorL != minorR)
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{
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return minorL < minorR ? -1 : 1;
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}
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sl >> discard >> buildL;
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sr >> discard >> buildR;
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if (buildL != buildR)
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{
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return buildL < buildR ? -1 : 1;
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}
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return 0;
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}
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void UpdateRelease::UpdateForCurrentVersion(const std::string¤tVersion)
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{
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if (compareVersions(currentVersion,this->UpgradeVersion()) >= 0)
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{
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this->updateAvailable_ = false;
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}
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}
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bool UpdateStatus::UpdateAvailable() const
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{
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if (!isValid_) return false;
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switch (this->UpdatePolicy())
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{
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case UpdatePolicyT::Development:
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return this->devRelease_.UpdateAvailable();
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break;
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case UpdatePolicyT::ReleaseOnly:
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return this->releaseOnlyRelease_.UpdateAvailable();
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case UpdatePolicyT::ReleaseOrBeta:
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this->releaseOrBetaRelease_.UpdateAvailable();
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default:
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case UpdatePolicyT::Disabled:
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return false;
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}
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}
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static std::string normalizeReleaseName(const std::string &releaseName)
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{
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// e.g. "PiPedal 1.2.34 Release" -> "PiPedal v1.2.34-Release"
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if (releaseName.empty())
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return "";
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std::string result = releaseName;
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auto nPos = result.find(' ');
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if (nPos == std::string::npos)
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{
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return result;
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}
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++nPos;
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if (nPos >= result.length())
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{
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return result;
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}
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char c = releaseName[nPos];
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if (c >= '0' && c <= '9')
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{
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result.insert(result.begin() + nPos, 'v');
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}
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nPos = result.find(' ', nPos);
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if (nPos != std::string::npos)
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{
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result.at(nPos) = '-';
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}
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return result;
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}
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UpdateRelease UpdaterImpl::getUpdateRelease(
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const std::vector<GithubRelease> &githubReleases,
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const std::string ¤tVersion,
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const UpdateReleasePredicate &predicate)
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{
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for (const auto &githubRelease : githubReleases)
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{
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auto *asset = githubRelease.GetDownloadForCurrentArchitecture();
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if (!asset)
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continue;
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auto *pgpKey = githubRelease.GetGpgKeyForAsset(asset->name);
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if (!pgpKey)
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{
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continue;
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}
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if (!predicate(githubRelease))
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continue;
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UpdateRelease updateRelease;
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updateRelease.upgradeVersion_ = justTheVersion(asset->name);
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updateRelease.updateAvailable_ = compareVersions(currentVersion, updateRelease.upgradeVersion_) < 0;
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updateRelease.upgradeVersionDisplayName_ = normalizeReleaseName(githubRelease.name);
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updateRelease.assetName_ = asset->name;
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updateRelease.updateUrl_ = asset->browser_download_url;
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updateRelease.gpgSignatureUrl_ = pgpKey->browser_download_url;
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return updateRelease;
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}
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return UpdateRelease();
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}
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static void CheckUpdateHttpResponse(std::string errorCode)
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{
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if (errorCode.starts_with("%"))
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{
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errorCode = errorCode.substr(1);
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}
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int code = -999;
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{
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std::istringstream ss{errorCode};
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ss >> code;
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}
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if (code == -999)
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{
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throw std::runtime_error(SS("Invalid curl response: " << errorCode));
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}
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if (code == 200)
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{
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return;
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}
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if (code == 0)
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{
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throw std::runtime_error("PiPedal server can't reach the internet.");
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}
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{
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std::string message = SS("HTTP error " << code << "");
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throw std::runtime_error(message);
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}
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}
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static std::chrono::system_clock::time_point http_date_to_time_point(const std::string &http_date)
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{
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std::tm tm = {};
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std::istringstream ss(http_date);
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ss >> std::get_time(&tm, "%a, %d %b %Y %H:%M:%S GMT");
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if (ss.fail())
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{
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throw std::runtime_error("Failed to parse HTTP date: " + http_date);
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}
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auto tt = timegm(&tm);
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return std::chrono::system_clock::from_time_t(tt);
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}
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JSON_MAP_BEGIN(GithubResponseHeaders)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, date)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, ratelimit_reset)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, ratelimit_limit)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, ratelimit_remaining)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, ratelimit_used)
|
|
JSON_MAP_REFERENCE(GithubResponseHeaders, ratelimit_resource)
|
|
JSON_MAP_END();
|
|
|
|
void GithubResponseHeaders::Load(const std::filesystem::path &FILENAME)
|
|
{
|
|
std::ifstream f(FILENAME);
|
|
if (f.is_open())
|
|
{
|
|
try
|
|
{
|
|
json_reader reader(f);
|
|
reader.read(this);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
Lv2Log::error(SS("Invalid file format: " << FILENAME << "."));
|
|
*this = GithubResponseHeaders();
|
|
}
|
|
}
|
|
}
|
|
void GithubResponseHeaders::Save(const std::filesystem::path &FILENAME)
|
|
{
|
|
std::filesystem::create_directories(FILENAME.parent_path());
|
|
ofstream_synced f(FILENAME);
|
|
if (!f.is_open())
|
|
{
|
|
Lv2Log::error(SS("Can't write to " << FILENAME << "."));
|
|
}
|
|
else
|
|
{
|
|
json_writer writer(f);
|
|
writer.write(this);
|
|
}
|
|
}
|
|
|
|
GithubResponseHeaders::GithubResponseHeaders(const std::filesystem::path path)
|
|
{
|
|
// HTTP/2 403
|
|
// date: Fri, 13 Sep 2024 17:31:22 GMT
|
|
//...
|
|
// x-ratelimit-limit: 60
|
|
// x-ratelimit-remaining: 0
|
|
// x-ratelimit-reset: 1726250807
|
|
// x-ratelimit-resource: core
|
|
// x-ratelimit-used: 60
|
|
std::ifstream f{path};
|
|
if (!f.is_open())
|
|
{
|
|
throw std::runtime_error(SS("Can't open file " << path << "."));
|
|
}
|
|
std::string http;
|
|
f >> http >> code_;
|
|
std::string line;
|
|
std::getline(f, line);
|
|
|
|
while (true)
|
|
{
|
|
std::getline(f, line);
|
|
auto trimPos = line.find_last_not_of("\r\n");
|
|
if (trimPos != std::string::npos)
|
|
{
|
|
line = line.substr(0, trimPos + 1);
|
|
}
|
|
|
|
if (!f)
|
|
break;
|
|
auto pos = line.find(':');
|
|
if (pos != std::string::npos)
|
|
{
|
|
std::string tag = line.substr(0, pos);
|
|
++pos;
|
|
while (pos < line.length() && line[pos] == ' ')
|
|
{
|
|
++pos;
|
|
}
|
|
std::string value = line.substr(pos);
|
|
uint64_t *pResult = nullptr;
|
|
if (tag == "date")
|
|
{
|
|
this->date_ = http_date_to_time_point(value);
|
|
}
|
|
else if (tag == "x-ratelimit-limit")
|
|
{
|
|
pResult = &ratelimit_limit_;
|
|
}
|
|
else if (tag == "x-ratelimit-remaining")
|
|
{
|
|
pResult = &ratelimit_remaining_;
|
|
}
|
|
else if (tag == "x-ratelimit-reset")
|
|
{
|
|
std::istringstream ss{value};
|
|
uint64_t reset = 0;
|
|
ss >> reset;
|
|
auto secs = std::chrono::seconds(reset); // value is seconds in UTC Unix epoch.
|
|
this->ratelimit_reset_ = std::chrono::system_clock::time_point(secs);
|
|
}
|
|
else if (tag == "x-ratelimit-resource")
|
|
{
|
|
ratelimit_resource_ = value;
|
|
}
|
|
else if (tag == "x-ratelimit-used")
|
|
{
|
|
pResult = &ratelimit_used_;
|
|
}
|
|
if (pResult)
|
|
{
|
|
std::istringstream ss{value};
|
|
ss >> *pResult;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
UpdateStatus UpdaterImpl::GetReleaseGeneratorStatus()
|
|
{
|
|
UpdateStatus result = DoUpdate(true);
|
|
return result;
|
|
}
|
|
|
|
void UpdaterImpl::CheckForUpdate(bool useCache)
|
|
{
|
|
UpdateStatus updateResult;
|
|
|
|
// if we've used up too many actual github requests, used the cached version even if the request is non-cached.
|
|
if (githubResponseHeaders.ratelimit_remaining_ < 3 * githubResponseHeaders.ratelimit_limit_ / 4)
|
|
{
|
|
useCache = true;
|
|
}
|
|
|
|
if (useCache)
|
|
{
|
|
if (clock::now() < this->updateRetryTime)
|
|
{
|
|
std::lock_guard lock{mutex};
|
|
{
|
|
this->currentResult = cachedUpdateStatus;
|
|
this->currentResult.UpdatePolicy(this->updatePolicy);
|
|
if (listener)
|
|
{
|
|
listener(this->currentResult);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
try
|
|
{
|
|
|
|
updateResult = DoUpdate(false);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
Lv2Log::error(SS("Updater: Failed to fetch update info. " << e.what()));
|
|
updateResult.errorMessage_ = e.what();
|
|
updateResult.isValid_ = false;
|
|
updateResult.isOnline_ = false;
|
|
}
|
|
{
|
|
std::lock_guard lock{mutex};
|
|
updateResult.UpdatePolicy(this->updatePolicy);
|
|
if (updateResult.isOnline_ && updateResult.isValid_)
|
|
{
|
|
this->currentResult = updateResult;
|
|
}
|
|
SetCachedUpdateStatus(this->currentResult);
|
|
if (listener)
|
|
{
|
|
listener(this->currentResult);
|
|
}
|
|
}
|
|
}
|
|
|
|
UpdateStatus UpdaterImpl::DoUpdate(bool forReleaseGenerator)
|
|
{
|
|
UpdateStatus updateResult;
|
|
if (forReleaseGenerator)
|
|
{
|
|
updateResult.currentVersion_ = "0.0.0";
|
|
}
|
|
|
|
// set default next retry time. github failures may postpone even further.
|
|
|
|
Lv2Log::info("Checking for updates.");
|
|
// const std::string responseOption = "-w \"%{response_code}\"";
|
|
#ifdef WIN32
|
|
responseOption = "-w \"%%{response_code}\""; // windows shell requires doubling of the %%.
|
|
#endif
|
|
|
|
TemporaryFile headerFile{workingDirectory};
|
|
std::string args = SS("-s -L " << GITHUB_RELEASES_URL << " -D " << headerFile.str());
|
|
|
|
updateResult.errorMessage_ = "";
|
|
|
|
auto result = sysExecForOutput("curl", args);
|
|
if (result.exitCode != EXIT_SUCCESS)
|
|
{
|
|
RetryAfter(std::chrono::duration_cast<clock::duration>(std::chrono::hours(4)));
|
|
throw std::runtime_error("Server has no internet access.");
|
|
}
|
|
else
|
|
{
|
|
// hard throttling for github.
|
|
RetryAfter(std::chrono::duration_cast<clock::duration>(std::chrono::hours(8)));
|
|
|
|
GithubResponseHeaders githubHeaders{headerFile.Path()};
|
|
this->githubResponseHeaders = githubHeaders;
|
|
this->githubResponseHeaders.Save(githubResponseHeaderFilename);
|
|
|
|
if (githubHeaders.code_ != 200)
|
|
{
|
|
if (
|
|
githubHeaders.ratelimit_limit_ != 0 &&
|
|
githubHeaders.ratelimit_limit_ == githubHeaders.ratelimit_used_)
|
|
{
|
|
std::time_t time = std::chrono::system_clock::to_time_t(githubHeaders.ratelimit_reset_);
|
|
std::string strTime = std::ctime(&time);
|
|
|
|
this->RetryAfter(githubHeaders.ratelimit_reset_ - githubHeaders.date_);
|
|
throw std::runtime_error(SS("Github API rate limit exceeded. Retrying at " << strTime));
|
|
}
|
|
}
|
|
|
|
if (result.output.length() == 0)
|
|
{
|
|
throw std::runtime_error("Server has no internet access.");
|
|
}
|
|
std::stringstream ss(result.output);
|
|
json_reader reader(ss);
|
|
json_variant vResult(reader);
|
|
|
|
if (vResult.is_object())
|
|
{
|
|
// an HTML error.
|
|
updateResult.isOnline_ = false;
|
|
auto o = vResult.as_object();
|
|
std::string message = "Unknown error.";
|
|
if (o->at("message").is_string())
|
|
{
|
|
message = o->at("message").as_string();
|
|
}
|
|
throw std::runtime_error(SS("Github Service error: " << message));
|
|
}
|
|
else if (!vResult.is_array())
|
|
{
|
|
throw std::runtime_error("Invalid file format error.");
|
|
}
|
|
else
|
|
{
|
|
json_variant::array_ptr vArray = vResult.as_array();
|
|
|
|
std::vector<GithubRelease> releases;
|
|
for (size_t i = 0; i < vArray->size(); ++i)
|
|
{
|
|
auto &el = vArray->at(i);
|
|
GithubRelease release{el};
|
|
if (!release.draft && release.GetDownloadForCurrentArchitecture() != nullptr)
|
|
{
|
|
if (release.name.find("Experimental") == std::string::npos) // experimental releases do not participate in auto-updates (not even for dev stream)
|
|
{
|
|
releases.push_back(std::move(release));
|
|
}
|
|
}
|
|
}
|
|
std::sort(
|
|
releases.begin(),
|
|
releases.end(),
|
|
[](const GithubRelease &left, const GithubRelease &right)
|
|
{
|
|
return left.published_at > right.published_at; // latest date first.
|
|
});
|
|
updateResult.releaseOnlyRelease_ = getUpdateRelease(
|
|
releases,
|
|
updateResult.currentVersion_,
|
|
[](const GithubRelease &githubRelease)
|
|
{
|
|
return !githubRelease.prerelease &&
|
|
githubRelease.name.find("Release") != std::string::npos;
|
|
});
|
|
|
|
updateResult.releaseOrBetaRelease_ = getUpdateRelease(
|
|
releases,
|
|
updateResult.currentVersion_,
|
|
[](const GithubRelease &githubRelease)
|
|
{
|
|
return !githubRelease.prerelease &&
|
|
(githubRelease.name.find("Release") != std::string::npos ||
|
|
githubRelease.name.find("Beta") != std::string::npos);
|
|
});
|
|
updateResult.devRelease_ = getUpdateRelease(
|
|
releases,
|
|
updateResult.currentVersion_,
|
|
[](const GithubRelease &githubRelease)
|
|
{
|
|
return true;
|
|
});
|
|
#ifdef TEST_UPDATE
|
|
updateResult.releaseOrBetaRelease_.upgradeVersionDisplayName_ = "PiPedal v1.2.41-Beta";
|
|
updateResult.devRelease_.upgradeVersionDisplayName_ = "PiPedal v1.2.39-Experimental";
|
|
updateResult.devRelease_.upgradeVersion_ = "1.2.39";
|
|
updateResult.devRelease_.updateAvailable_ = false;
|
|
#endif
|
|
updateResult.isValid_ = true;
|
|
updateResult.isOnline_ = true;
|
|
}
|
|
}
|
|
return updateResult;
|
|
}
|
|
bool UpdateRelease::operator==(const UpdateRelease &other) const
|
|
{
|
|
return (updateAvailable_ == other.updateAvailable_) &&
|
|
(upgradeVersion_ == other.upgradeVersion_) &&
|
|
(upgradeVersionDisplayName_ == other.upgradeVersionDisplayName_) &&
|
|
(assetName_ == other.assetName_) &&
|
|
(updateUrl_ == other.updateUrl_);
|
|
}
|
|
|
|
bool UpdateStatus::operator==(const UpdateStatus &other) const
|
|
{
|
|
return (lastUpdateTime_ == other.lastUpdateTime_) &&
|
|
(isValid_ == other.isValid_) &&
|
|
(errorMessage_ == other.errorMessage_) &&
|
|
(isOnline_ == other.isOnline_) &&
|
|
(currentVersion_ == other.currentVersion_) &&
|
|
(currentVersionDisplayName_ == other.currentVersionDisplayName_) &&
|
|
(updatePolicy_ == other.updatePolicy_) &&
|
|
(releaseOnlyRelease_ == other.releaseOnlyRelease_) &&
|
|
(releaseOrBetaRelease_ == other.releaseOrBetaRelease_) &&
|
|
(devRelease_ == other.devRelease_);
|
|
}
|
|
|
|
UpdatePolicyT UpdaterImpl::GetUpdatePolicy()
|
|
{
|
|
std::lock_guard lock{mutex};
|
|
return updatePolicy;
|
|
}
|
|
void UpdaterImpl::SetUpdatePolicy(UpdatePolicyT updatePolicy)
|
|
{
|
|
std::lock_guard lock{mutex};
|
|
if (updatePolicy == this->updatePolicy)
|
|
return;
|
|
this->updatePolicy = updatePolicy;
|
|
this->currentResult.UpdatePolicy(updatePolicy);
|
|
SetCachedUpdateStatus(this->currentResult);
|
|
if (listener)
|
|
{
|
|
listener(currentResult);
|
|
}
|
|
}
|
|
void UpdaterImpl::ForceUpdateCheck()
|
|
{
|
|
uint64_t value = UNCACHED_CHECK_NOW_EVENT;
|
|
auto _ = write(this->event_writer, &value, sizeof(uint64_t));
|
|
}
|
|
|
|
UpdateStatus::UpdateStatus()
|
|
{
|
|
currentVersion_ = PROJECT_VER;
|
|
currentVersionDisplayName_ = PROJECT_DISPLAY_VERSION;
|
|
|
|
#ifdef TEST_UPDATE
|
|
// uncomment this line to test upgrading.
|
|
currentVersion_ = "1.2.39";
|
|
currentVersionDisplayName_ = "PiPedal 1.2.39-Debug";
|
|
#endif
|
|
}
|
|
|
|
void UpdateStatus::UpdateForCurrentVersion()
|
|
{
|
|
currentVersion_ = PROJECT_VER;
|
|
currentVersionDisplayName_ = PROJECT_DISPLAY_VERSION;
|
|
|
|
#if defined(TEST_UPDATE) && defined(DEBUG)
|
|
// uncomment this line to test upgrading.
|
|
currentVersion_ = "1.2.39";
|
|
currentVersionDisplayName_ = "PiPedal 1.2.39-Fictional";
|
|
#endif
|
|
|
|
this->devRelease_.UpdateForCurrentVersion(currentVersion_);;
|
|
this->releaseOnlyRelease_.UpdateForCurrentVersion(currentVersion_);
|
|
this->releaseOrBetaRelease_.UpdateForCurrentVersion(currentVersion_);
|
|
}
|
|
|
|
std::chrono::system_clock::time_point UpdateStatus::LastUpdateTime() const
|
|
{
|
|
std::chrono::system_clock::duration duration{this->lastUpdateTime_};
|
|
std::chrono::system_clock::time_point tp{duration};
|
|
return tp;
|
|
}
|
|
|
|
void UpdateStatus::LastUpdateTime(const std::chrono::system_clock::time_point &timePoint)
|
|
{
|
|
this->lastUpdateTime_ = timePoint.time_since_epoch().count();
|
|
}
|
|
|
|
const GithubAsset *GithubRelease::GetGpgKeyForAsset(const std::string &name) const
|
|
{
|
|
std::string targetName = name + ".asc";
|
|
|
|
for (auto &asset : assets)
|
|
{
|
|
if (asset.name == targetName)
|
|
{
|
|
return &asset;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
const GithubAsset *GithubRelease::GetDownloadForCurrentArchitecture() const
|
|
{
|
|
// deb package names end in {DEBIAN_ARCHITECTURE}.deb
|
|
// pipedal build gets this value from `dpkg --print-architecture`
|
|
#ifndef DEBIAN_ARCHITECTURE // deb package names end in {DEBIAN_ARCHITECTURE}.deb
|
|
#error DEBIAN_ARCHITECTURE not defined
|
|
#endif
|
|
std::string downloadEnding = SS("_" << (DEBIAN_ARCHITECTURE) << ".deb");
|
|
|
|
for (auto &asset : assets)
|
|
{
|
|
if (asset.name.ends_with(downloadEnding))
|
|
{
|
|
return &asset;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
std::string UpdaterImpl::GetSignatureUrl(const std::string &url)
|
|
{
|
|
|
|
// partialy whitelisting, partly avoiding having to parse a URL.
|
|
if (this->currentResult.releaseOnlyRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.releaseOnlyRelease_.GpgSignatureUrl();
|
|
}
|
|
if (this->currentResult.releaseOrBetaRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.releaseOrBetaRelease_.GpgSignatureUrl();
|
|
}
|
|
if (this->currentResult.devRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.devRelease_.GpgSignatureUrl();
|
|
}
|
|
throw std::runtime_error("Permission denied. No signature URL.");
|
|
}
|
|
|
|
std::string UpdaterImpl::GetUpdateFilename(const std::string &url)
|
|
{
|
|
|
|
// partialy whitelisting, partly avoiding having to parse a URL.
|
|
if (this->currentResult.releaseOnlyRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.releaseOnlyRelease_.AssetName();
|
|
}
|
|
if (this->currentResult.releaseOrBetaRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.releaseOrBetaRelease_.AssetName();
|
|
}
|
|
if (this->currentResult.devRelease_.UpdateUrl() == url)
|
|
{
|
|
return this->currentResult.devRelease_.AssetName();
|
|
}
|
|
throw std::runtime_error("Permission denied. Invalid url.");
|
|
}
|
|
static std::string unCRLF(const std::string &text)
|
|
{
|
|
std::ostringstream ss;
|
|
for (char c : text)
|
|
{
|
|
if (c == '\r')
|
|
continue;
|
|
if (c == '\n')
|
|
{
|
|
ss << '/';
|
|
}
|
|
else
|
|
{
|
|
ss << c;
|
|
}
|
|
}
|
|
return ss.str();
|
|
}
|
|
|
|
static void removeOldSiblings(int numberToKeep, const std::filesystem::path &fileToKeep)
|
|
{
|
|
|
|
auto extension = fileToKeep.extension();
|
|
auto directory = fileToKeep.parent_path();
|
|
if (directory.empty())
|
|
return; // superstition.
|
|
struct RemoveEntry
|
|
{
|
|
fs::path path;
|
|
fs::file_time_type time;
|
|
};
|
|
std::vector<RemoveEntry> entries;
|
|
for (const auto &dirEntry : fs::directory_iterator(directory))
|
|
{
|
|
if (dirEntry.is_regular_file())
|
|
{
|
|
auto thisPath = dirEntry.path();
|
|
if (thisPath != fileToKeep)
|
|
{
|
|
if (thisPath.extension() == extension)
|
|
{
|
|
entries.push_back(
|
|
RemoveEntry{
|
|
.path = thisPath,
|
|
.time = dirEntry.last_write_time()});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
std::sort(
|
|
entries.begin(), entries.end(),
|
|
[](const RemoveEntry &left, const RemoveEntry &right)
|
|
{
|
|
return left.time > right.time; // by time descending
|
|
});
|
|
for (size_t i = numberToKeep; i < entries.size(); ++i)
|
|
{
|
|
fs::remove(entries[i].path);
|
|
}
|
|
}
|
|
|
|
static std::string getFingerprint(const std::string &gpgText)
|
|
{
|
|
std::string keyPosition = "using RSA key ";
|
|
size_t nPos = gpgText.find(keyPosition);
|
|
if (nPos == std::string::npos)
|
|
{
|
|
return "";
|
|
}
|
|
nPos += keyPosition.length();
|
|
while (nPos < gpgText.length() && gpgText[nPos] == ' ')
|
|
{
|
|
++nPos;
|
|
}
|
|
auto start = nPos;
|
|
|
|
while (true)
|
|
{
|
|
char c = gpgText[nPos];
|
|
if (nPos >= gpgText.length() || c == ' ' || c == '\r' || c == '\n' || c == '\t')
|
|
{
|
|
break;
|
|
}
|
|
++nPos;
|
|
}
|
|
return gpgText.substr(start, nPos - start);
|
|
}
|
|
static bool IsSignatureGood(const std::string &gpgText)
|
|
{
|
|
std::string originPosition = "gpg: Good signature from \"";
|
|
|
|
size_t nPos = gpgText.find(originPosition);
|
|
return nPos != std::string::npos;
|
|
}
|
|
static std::string getAddress(const std::string &gpgText)
|
|
{
|
|
std::string originPosition = "gpg: Good signature from \"";
|
|
|
|
size_t nPos = gpgText.find(originPosition);
|
|
if (nPos == std::string::npos)
|
|
{
|
|
return "";
|
|
}
|
|
nPos += originPosition.length();
|
|
auto start = nPos;
|
|
while (true)
|
|
{
|
|
if (nPos >= gpgText.length() || gpgText[nPos] == '\"' || gpgText[nPos] == '\r' || gpgText[nPos] == '\n')
|
|
{
|
|
break;
|
|
}
|
|
++nPos;
|
|
}
|
|
return gpgText.substr(start, nPos - start);
|
|
}
|
|
void Updater::ValidateSignature(const std::filesystem::path &file, const std::filesystem::path &signatureFile)
|
|
{
|
|
// sudo gpg --home /var/pipedal/config/gpg --verify pipedal_1.2.41_arm64.deb.asc pipedal_1.2.41_arm64.deb
|
|
// gpg: assuming signed data in 'pipedal_1.2.41_arm64.deb'
|
|
// gpg: Signature made Tue 27 Aug 2024 09:25:06 PM EDT
|
|
// gpg: using RSA key 381124E2BB4478D225D2313B2AEF3F7BD53EAA59
|
|
// gpg: Good signature from "Robin Davies <rerdavies@gmail.com>" [ultimate]
|
|
std::ostringstream ss;
|
|
ss << "--home " << PGP_UPDATE_KEYRING_PATH
|
|
<< " --verify "
|
|
<< signatureFile << " " << file;
|
|
|
|
Lv2Log::debug(SS("/usr/bin/gpg " << ss.str()));
|
|
auto gpgOutput = sysExecForOutput("/usr/bin/gpg", ss.str());
|
|
if (gpgOutput.exitCode != EXIT_SUCCESS)
|
|
{
|
|
throw std::runtime_error("Update file is not correctly signed.");
|
|
}
|
|
const std::string &gpgText = gpgOutput.output;
|
|
|
|
if (!IsSignatureGood(gpgText))
|
|
{
|
|
Lv2Log::error(gpgOutput.output);
|
|
throw std::runtime_error("Update signature is not valid.");
|
|
}
|
|
std::string keyId = getFingerprint(gpgText);
|
|
|
|
if (keyId != UPDATE_GPG_FINGERPRINT && keyId != UPDATE_GPG_FINGERPRINT2)
|
|
{
|
|
Lv2Log::error(gpgOutput.output);
|
|
throw std::runtime_error(SS("Update signature has the wrong id: " << keyId));
|
|
}
|
|
std::string origin = getAddress(gpgText);
|
|
if (origin != UPDATE_GPG_ADDRESS && origin != UPDATE_GPG_ADDRESS2)
|
|
{
|
|
Lv2Log::error(gpgOutput.output);
|
|
throw std::runtime_error(SS("Update signature has an incorrect address." << origin));
|
|
}
|
|
}
|
|
|
|
static bool badOutput(const std::filesystem::path &filePath)
|
|
{
|
|
if (!fs::is_regular_file(filePath))
|
|
{
|
|
return true;
|
|
}
|
|
return fs::file_size(filePath) == 0;
|
|
}
|
|
|
|
static void checkCurlHttpResponse(std::string errorCode)
|
|
{
|
|
if (errorCode.starts_with("%"))
|
|
{
|
|
errorCode = errorCode.substr(1);
|
|
}
|
|
int code = -999;
|
|
{
|
|
std::istringstream ss{errorCode};
|
|
ss >> code;
|
|
}
|
|
if (code == -999)
|
|
{
|
|
throw std::runtime_error(SS("Download failed. Invalid curl response: " << errorCode));
|
|
}
|
|
if (code == 200)
|
|
{
|
|
return;
|
|
}
|
|
if (code == 0)
|
|
{
|
|
throw std::runtime_error("PiPedal server can't reach the internet.");
|
|
}
|
|
|
|
{
|
|
std::string message = SS("Download failed (HTTP error " << code << ")");
|
|
throw std::runtime_error(message);
|
|
}
|
|
}
|
|
void UpdaterImpl::RetryAfter(clock::duration delay)
|
|
{
|
|
namespace chron = std::chrono;
|
|
clock::duration hours24 = chron::duration_cast<clock::duration>(chron::hours(24));
|
|
if (delay.count() < 0 || delay >= hours24) // non-synced system clock (as Raspberry Pis are prone to without network connections)
|
|
{
|
|
delay = chron::duration_cast<clock::duration>(chron::hours(6));
|
|
}
|
|
SaveRetryTime(chron::system_clock::now() + std::chrono::duration_cast<chron::system_clock::duration>(delay));
|
|
|
|
clock::time_point myRetryTime = clock::now() + delay;
|
|
|
|
if (this->updateRetryTime < myRetryTime)
|
|
{
|
|
this->updateRetryTime = myRetryTime;
|
|
}
|
|
}
|
|
void UpdaterImpl::SaveRetryTime(const std::chrono::system_clock::time_point &time)
|
|
{
|
|
fs::path retryTimePath = workingDirectory / "retryTime.json";
|
|
pipedal::ofstream_synced f{retryTimePath};
|
|
if (f.is_open())
|
|
{
|
|
json_writer writer(f);
|
|
auto rep = time.time_since_epoch().count();
|
|
writer.write(rep);
|
|
}
|
|
}
|
|
UpdaterImpl::clock::time_point UpdaterImpl::LoadRetryTime()
|
|
{
|
|
using namespace std::chrono;
|
|
|
|
fs::path retryTimePath = workingDirectory / "retryTime.json";
|
|
std::ifstream f{retryTimePath};
|
|
if (f.is_open())
|
|
{
|
|
system_clock::duration::rep tRep = 0;
|
|
json_reader reader(f);
|
|
reader.read(&tRep);
|
|
|
|
system_clock::duration duration(tRep);
|
|
|
|
system_clock::time_point systemTime = system_clock::time_point(duration);
|
|
|
|
// now convert to stead_clock time with the understanding that system_clock time may be blown.
|
|
system_clock::duration systemDuration = systemTime - system_clock::now();
|
|
clock::duration clockDuration = duration_cast<clock::duration>(systemDuration);
|
|
if (clockDuration > duration_cast<clock::duration>(hours(48))) // is system clock blown?
|
|
{
|
|
clockDuration = duration_cast<clock::duration>(hours(6));
|
|
}
|
|
return clock::now() + clockDuration;
|
|
}
|
|
return clock::now();
|
|
}
|
|
|
|
void UpdaterImpl::DownloadUpdate(const std::string &url, std::filesystem::path *file, std::filesystem::path *signatureFile)
|
|
{
|
|
std::string filename, signatureUrl;
|
|
{
|
|
std::lock_guard lock{mutex};
|
|
filename = GetUpdateFilename(url);
|
|
signatureUrl = GetSignatureUrl(url);
|
|
}
|
|
|
|
// Only permit downloading of updates from the github releases for the pipedal project.
|
|
// I don't think this will get past GetUpdateFileName, but defense in depth. We will
|
|
// not download from anywhere we don't trust.
|
|
if (!WhitelistDownloadUrl(url))
|
|
{
|
|
throw std::runtime_error(SS("Invalid update url. Downloads from this address are not permitted: " << url));
|
|
}
|
|
if (!WhitelistDownloadUrl(signatureUrl))
|
|
{
|
|
throw std::runtime_error(SS("Invalid update url. Downloads from this address are not permitted: " << signatureUrl));
|
|
}
|
|
auto downloadDirectory = workingDirectory / "downloads";
|
|
std::filesystem::create_directories(downloadDirectory);
|
|
|
|
auto downloadFilePath = downloadDirectory / filename;
|
|
auto downloadSignaturePath = downloadDirectory / SS(filename << ".asc");
|
|
|
|
try
|
|
{
|
|
fs::remove(downloadFilePath);
|
|
fs::remove(downloadSignaturePath);
|
|
|
|
const std::string responseOption = "-w \"%{response_code}\"";
|
|
#ifdef WIN32
|
|
responseOption = "-w \"%%{response_code}\""; // windows shell requires doubling of the %%.
|
|
#endif
|
|
std::string args = SS("-s -L " << responseOption << " " << url << " -o " << downloadFilePath.c_str());
|
|
auto curlOutput = sysExecForOutput("/usr/bin/curl", args);
|
|
if (curlOutput.exitCode != EXIT_SUCCESS || badOutput(downloadFilePath))
|
|
{
|
|
Lv2Log::error(SS("Update download failed. " << unCRLF(curlOutput.output)));
|
|
throw std::runtime_error("PiPedal server does not have access to the internet.");
|
|
}
|
|
checkCurlHttpResponse(curlOutput.output);
|
|
|
|
args = SS("-s -L " << responseOption << " " << signatureUrl << " -o " << downloadSignaturePath.c_str());
|
|
|
|
curlOutput = sysExecForOutput("/usr/bin/curl", args);
|
|
if (curlOutput.exitCode != EXIT_SUCCESS || badOutput(downloadSignaturePath))
|
|
{
|
|
Lv2Log::error(SS("Update download failed. " << unCRLF(curlOutput.output)));
|
|
throw std::runtime_error("PiPedal server does not have access to the internet.");
|
|
}
|
|
checkCurlHttpResponse(curlOutput.output);
|
|
|
|
try
|
|
{
|
|
removeOldSiblings(2, downloadFilePath);
|
|
removeOldSiblings(2, downloadSignaturePath);
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
Lv2Log::error(SS("Can't remove download siblings" << e.what()));
|
|
// and carry on.
|
|
}
|
|
|
|
// Can't only be performed under pipedal_d or root accouts.
|
|
// This is as far as you can go while debugging.
|
|
|
|
// The admin process will actually check the signature again running as root; but this is our last
|
|
// chance to give a reasonable error message, so do it here as well, because any subsequent errors
|
|
// can only go to systemd logs.
|
|
ValidateSignature(downloadFilePath, downloadSignaturePath);
|
|
*file = downloadFilePath;
|
|
*signatureFile = downloadSignaturePath;
|
|
return;
|
|
}
|
|
catch (const std::exception &e)
|
|
{
|
|
std::filesystem::remove(downloadFilePath);
|
|
std::filesystem::remove(downloadSignaturePath);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
UpdateStatus UpdaterImpl::GetCurrentStatus() const {
|
|
return this->currentResult;
|
|
}
|
|
|
|
|
|
void UpdateStatus::AddRelease(const std::string&packageName)
|
|
{
|
|
this->isValid_ = true;
|
|
this->errorMessage_ = "";
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
JSON_MAP_BEGIN(UpdateRelease)
|
|
JSON_MAP_REFERENCE(UpdateRelease, updateAvailable)
|
|
JSON_MAP_REFERENCE(UpdateRelease, upgradeVersion)
|
|
JSON_MAP_REFERENCE(UpdateRelease, upgradeVersionDisplayName)
|
|
JSON_MAP_REFERENCE(UpdateRelease, assetName)
|
|
JSON_MAP_REFERENCE(UpdateRelease, updateUrl)
|
|
JSON_MAP_REFERENCE(UpdateRelease, gpgSignatureUrl)
|
|
JSON_MAP_END();
|
|
|
|
JSON_MAP_BEGIN(UpdateStatus)
|
|
JSON_MAP_REFERENCE(UpdateStatus, lastUpdateTime)
|
|
JSON_MAP_REFERENCE(UpdateStatus, isValid)
|
|
JSON_MAP_REFERENCE(UpdateStatus, errorMessage)
|
|
JSON_MAP_REFERENCE(UpdateStatus, isOnline)
|
|
JSON_MAP_REFERENCE(UpdateStatus, currentVersion)
|
|
JSON_MAP_REFERENCE(UpdateStatus, currentVersionDisplayName)
|
|
JSON_MAP_REFERENCE(UpdateStatus, updatePolicy)
|
|
JSON_MAP_REFERENCE(UpdateStatus, releaseOnlyRelease)
|
|
JSON_MAP_REFERENCE(UpdateStatus, releaseOrBetaRelease)
|
|
JSON_MAP_REFERENCE(UpdateStatus, devRelease)
|
|
JSON_MAP_END();
|