/// <summary>
/// Starts the updater executable and sends update data to it
/// </summary>
/// <param name="relaunchApplication">true if relaunching the caller application is required; false otherwise</param>
/// <returns>True if successful (unless a restart was required</returns>
public bool ApplyUpdates(bool relaunchApplication)
{
lock (UpdatesToApply)
{
LatestError = null;
// Make sure the current backup folder is accessible for writing from this process
if (!Utils.PermissionsCheck.HaveWritePermissionsForFolder(BackupFolder))
{
_BackupFolder = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
UpdateProcessName + "UpdateBackups");
}
else
{
// Remove old backup folder, in case this same folder was used previously,
// and it wasn't removed for some reason
if (Directory.Exists(BackupFolder))
{
Directory.Delete(BackupFolder, true);
}
}
Directory.CreateDirectory(BackupFolder);
var executeOnAppRestart = new Dictionary <string, object>();
State = UpdateProcessState.RollbackRequired;
foreach (var task in UpdatesToApply)
{
// First, execute the task
if (!task.Execute())
{
// TODO: notify about task execution failure using exceptions
continue;
}
// Add any pending cold updates to the list
var en = task.GetColdUpdates();
while (en.MoveNext())
{
// Last write wins
executeOnAppRestart[en.Current.Key] = en.Current.Value;
}
}
// If an application restart is required
if (executeOnAppRestart.Count > 0)
{
// Add some environment variables to the dictionary object which will be passed to the updater
executeOnAppRestart["ENV:AppPath"] = ApplicationPath;
executeOnAppRestart["ENV:WorkingDirectory"] = Environment.CurrentDirectory;
executeOnAppRestart["ENV:TempFolder"] = TempFolder;
executeOnAppRestart["ENV:BackupFolder"] = BackupFolder;
executeOnAppRestart["ENV:RelaunchApplication"] = relaunchApplication;
// Naming it updater.exe seem to trigger the UAC, and we don't want that
var updStarter = new UpdateStarter(Path.Combine(TempFolder, "foo.exe"), executeOnAppRestart, UpdateProcessName);
bool createdNew;
using (var _ = new Mutex(true, UpdateProcessName, out createdNew))
{
if (!updStarter.Start())
{
return(false);
}
Environment.Exit(0);
}
}
State = UpdateProcessState.AppliedSuccessfully;
UpdatesToApply.Clear();
}
return(true);
}
/// <summary>
/// Starts the updater executable and sends update data to it
/// </summary>
/// <param name="relaunchApplication">true if relaunching the caller application is required; false otherwise</param>
/// <returns>True if successful (unless a restart was required</returns>
public bool ApplyUpdates(bool relaunchApplication)
{
lock (UpdatesToApply)
{
LatestError = null;
bool revertToDefaultBackupPath = true;
// Make sure the current backup folder is accessible for writing from this process
string backupParentPath = Path.GetDirectoryName(BackupFolder) ?? string.Empty;
if (Directory.Exists(backupParentPath) && Utils.PermissionsCheck.HaveWritePermissionsForFolder(backupParentPath))
{
// Remove old backup folder, in case this same folder was used previously,
// and it wasn't removed for some reason
try
{
if (Directory.Exists(BackupFolder))
Directory.Delete(BackupFolder, true);
revertToDefaultBackupPath = false;
}
catch (UnauthorizedAccessException)
{
}
// Attempt to (re-)create the backup folder
try
{
Directory.CreateDirectory(BackupFolder);
if (!Utils.PermissionsCheck.HaveWritePermissionsForFolder(BackupFolder))
revertToDefaultBackupPath = true;
}
catch (UnauthorizedAccessException)
{
// We're having permissions issues with this folder, so we'll attempt
// using a backup in a default location
revertToDefaultBackupPath = true;
}
}
if (revertToDefaultBackupPath)
{
_backupFolder = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
UpdateProcessName + "UpdateBackups");
try
{
Directory.CreateDirectory(BackupFolder);
}
catch (UnauthorizedAccessException ex)
{
// We can't backup, so we abort
LatestError = ex.ToString();
return false;
}
}
var executeOnAppRestart = new Dictionary<string, object>();
State = UpdateProcessState.RollbackRequired;
foreach (var task in UpdatesToApply)
{
// First, execute the task
if (!task.Execute())
{
// TODO: notify about task execution failure using exceptions
continue;
}
// Add any pending cold updates to the list
var en = task.GetColdUpdates();
while (en.MoveNext())
{
// Last write wins
executeOnAppRestart[en.Current.Key] = en.Current.Value;
}
}
// If an application restart is required
if (executeOnAppRestart.Count > 0)
{
// Add some environment variables to the dictionary object which will be passed to the updater
executeOnAppRestart["ENV:AppPath"] = ApplicationPath;
executeOnAppRestart["ENV:WorkingDirectory"] = Environment.CurrentDirectory;
executeOnAppRestart["ENV:TempFolder"] = TempFolder;
executeOnAppRestart["ENV:BackupFolder"] = BackupFolder;
executeOnAppRestart["ENV:RelaunchApplication"] = relaunchApplication;
if (!Directory.Exists(TempFolder))
Directory.CreateDirectory(TempFolder);
// Naming it updater.exe seem to trigger the UAC, and we don't want that
var updStarter = new UpdateStarter(Path.Combine(TempFolder, "foo.exe"), executeOnAppRestart, UpdateProcessName);
bool createdNew;
using (var _ = new Mutex(true, UpdateProcessName, out createdNew))
{
if (!updStarter.Start())
return false;
Environment.Exit(0);
}
}
State = UpdateProcessState.AppliedSuccessfully;
UpdatesToApply.Clear();
}
return true;
}
/// <summary>
/// Starts the updater executable and sends update data to it
/// </summary>
/// <param name="RestartApplication">true if relaunching the caller application is required; false otherwise</param>
/// <returns>True if successful (unless a restart was required</returns>
public bool ApplyUpdates(bool RelaunchApplication)
{
lock (UpdatesToApply)
{
// Make sure the current backup folder is accessible for writing from this process
if (!Utils.PermissionsCheck.HaveWritePermissionsForFolder(BackupFolder))
{
_BackupFolder = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
UpdateProcessName + "UpdateBackups");
}
else
{
// Remove old backup folder, in case this same folder was used previously,
// and it wasn't removed for some reason
if (Directory.Exists(BackupFolder))
Directory.Delete(BackupFolder, true);
}
Directory.CreateDirectory(BackupFolder);
Dictionary<string, object> executeOnAppRestart = new Dictionary<string, object>();
State = UpdateProcessState.RollbackRequired;
foreach (IUpdateTask task in UpdatesToApply)
{
if (!task.Execute())
{
// TODO: notify about task execution failure using exceptions
}
// This is the only place where we have non-generalized code in UpdateManager.
// The reason for that is the updater currently only supports replacing bytes by path, which
// only FileUpdaterTask does - so there's no reason to generalize this portion too.
else if (task is FileUpdateTask && task.Attributes.ContainsKey("localPath"))
{
if (!task.Attributes.ContainsKey("apply") ||
(task.Attributes.ContainsKey("apply") && "app-restart".Equals(task.Attributes["apply"])))
{
FileUpdateTask fut = (FileUpdateTask)task;
executeOnAppRestart[task.Attributes["localPath"]] = fut.tempFile;
}
}
}
// If an application restart is required
if (executeOnAppRestart.Count > 0)
{
// Add some environment variables to the dictionary object which will be passed to the updater
executeOnAppRestart["ENV:AppPath"] = ApplicationPath;
executeOnAppRestart["ENV:TempFolder"] = TempFolder;
executeOnAppRestart["ENV:BackupFolder"] = BackupFolder;
executeOnAppRestart["ENV:RelaunchApplication"] = RelaunchApplication;
UpdateStarter updStarter = new UpdateStarter(Path.Combine(TempFolder, "updater.exe"), executeOnAppRestart, UpdateProcessName);
bool createdNew;
using (Mutex mutex = new Mutex(true, UpdateProcessName, out createdNew))
{
if (!updStarter.Start())
return false;
Environment.Exit(0);
}
}
State = UpdateProcessState.AppliedSuccessfully;
UpdatesToApply.Clear();
}
return true;
}
