public void WeCanFetchAllProcesses() { var result = UnsafeUtility.EnumerateProcesses(); Assert.True(result.Count > 1); Assert.True(result.Count != 2048); }
public void KillAllProcessesBelongingToPackage() { var ourExe = Assembly.GetEntryAssembly(); var ourExePath = ourExe != null ? ourExe.Location : null; UnsafeUtility.EnumerateProcesses() .Where( x => { // Processes we can't query will have an empty process name, we can't kill them // anyways if (string.IsNullOrWhiteSpace(x.Item1)) { return(false); } // Files that aren't in our root app directory are untouched if (!x.Item1.StartsWith(rootAppDirectory, StringComparison.OrdinalIgnoreCase)) { return(false); } // Never kill our own EXE if (ourExePath != null && x.Item1.Equals(ourExePath, StringComparison.OrdinalIgnoreCase)) { return(false); } var name = Path.GetFileName(x.Item1).ToLowerInvariant(); if (name == "squirrel.exe" || name == "update.exe") { return(false); } return(true); }) .ForEach( x => { try { Log.WarnIfThrows(() => Process.GetProcessById(x.Item2).Kill()); } catch { } }); }
// NB: Once we uninstall the old version of the app, we try to schedule // it to be deleted at next reboot. Unfortunately, depending on whether // the user has admin permissions, this can fail. So as a failsafe, // before we try to apply any update, we assume previous versions in the // directory are "dead" (i.e. already uninstalled, but not deleted), and // we blow them away. This is to make sure that we don't attempt to run // an uninstaller on an already-uninstalled version. private async Task CleanDeadVersions(SemanticVersion originalVersion, SemanticVersion currentVersion, bool forceUninstall = false) { if (currentVersion == null) { return; } var di = new DirectoryInfo(rootAppDirectory); if (!di.Exists) { return; } Log.InfoFormat("cleanDeadVersions: for version {0}", currentVersion); string originalVersionFolder = null; if (originalVersion != null) { originalVersionFolder = GetDirectoryForRelease(originalVersion).Name; Log.InfoFormat("cleanDeadVersions: exclude folder {0}", originalVersionFolder); } string currentVersionFolder = null; if (currentVersion != null) { currentVersionFolder = GetDirectoryForRelease(currentVersion).Name; Log.InfoFormat("cleanDeadVersions: exclude folder {0}", currentVersionFolder); } // NB: If we try to access a directory that has already been // scheduled for deletion by MoveFileEx it throws what seems like // NT's only error code, ERROR_ACCESS_DENIED. Squelch errors that // come from here. var toCleanup = di.GetDirectories() .Where(x => x.Name.ToLowerInvariant().Contains("app-")) .Where(x => x.Name != currentVersionFolder && x.Name != originalVersionFolder) .Where(x => !IsAppFolderDead(x.FullName)); if (forceUninstall == false) { await toCleanup.ForEachAsync( async x => { var squirrelApps = SquirrelAwareExecutableDetector.GetAllSquirrelAwareApps(x.FullName); var args = $"--squirrel-obsolete {x.Name.Replace("app-", "")}"; if (squirrelApps.Count > 0) { // For each app, run the install command in-order and wait await squirrelApps.ForEachAsync( async exe => { using (var cts = new CancellationTokenSource()) { cts.CancelAfter(10 * 1000); try { await Utility.InvokeProcessAsync(exe, args, cts.Token); } catch (Exception ex) { Log.Error("Coudln't run Squirrel hook, continuing: " + exe, ex); } } }, 1 /* at a time */); } }); } // Include dead folders in folders to :fire: toCleanup = di.GetDirectories() .Where(x => x.Name.ToLowerInvariant().Contains("app-")) .Where(x => x.Name != currentVersionFolder && x.Name != originalVersionFolder); // Get the current process list in an attempt to not burn // directories which have running processes var runningProcesses = UnsafeUtility.EnumerateProcesses(); // Finally, clean up the app-X.Y.Z directories await toCleanup.ForEachAsync( async x => { try { if (runningProcesses.All(p => p.Item1 == null || !p.Item1.StartsWith(x.FullName, StringComparison.OrdinalIgnoreCase))) { await Utility.DeleteDirectoryOrJustGiveUp(x.FullName); } if (Directory.Exists(x.FullName)) { // NB: If we cannot clean up a directory, we need to make // sure that anyone finding it later won't attempt to run // Squirrel events on it. We'll mark it with a .dead file MarkAppFolderAsDead(x.FullName); } } catch (UnauthorizedAccessException ex) { Log.Warn("Couldn't delete directory: " + x.FullName, ex); // NB: Same deal as above MarkAppFolderAsDead(x.FullName); } }); // Clean up the packages directory too var releasesFile = Utility.LocalReleaseFileForAppDir(rootAppDirectory); var entries = ReleaseEntry.ParseReleaseFile(File.ReadAllText(releasesFile, Encoding.UTF8)); var pkgDir = Utility.PackageDirectoryForAppDir(rootAppDirectory); var releaseEntry = default(ReleaseEntry); foreach (var entry in entries) { if (entry.Version == currentVersion) { releaseEntry = ReleaseEntry.GenerateFromFile(Path.Combine(pkgDir, entry.Filename)); continue; } File.Delete(Path.Combine(pkgDir, entry.Filename)); } ReleaseEntry.WriteReleaseFile(new[] { releaseEntry }, releasesFile); }