//**************************************************************
// CheckForUpdates()
// - Checks for an update
// - This is a sync call... normally called by the poller object
// on the poller thread.
//**************************************************************
public bool CheckForUpdates()
{
Debug.WriteLine("APPMANAGER: Checking for updates.");
bool retValue = false;
//If the OnCheckForUpdate event the caller is doing the check
if (OnCheckForUpdate != null)
{
retValue = OnCheckForUpdate(this, new EventArgs());
}
else //otherwise do the check ourselves
{
//If versioning is enabled check to see if the version file has changed.
if (ChangeDetectionMode == ChangeDetectionModes.ServerManifestCheck)
{
ServerManifest vm = new ServerManifest();
vm.Load(UpdateUrl);
retValue = vm.IsServerVersionNewer(GetLatestInstalledVersion());
}
else //If versioning is not enabled, check the files themselves
{
Resource currentResource;
foreach (Object r in Manifest.Resources.ResourceList)
{
currentResource = (Resource)(((DictionaryEntry)r).Value);
string url = UpdateUrl + currentResource.Name;
string FilePath = currentResource.FilePath;
if (WebFileLoader.CheckForFileUpdate(url, FilePath))
{
retValue = true;
}
}
}
}
//Fire the OnUpdateDetected Event on the UI thread
if (OnUpdateDetected != null)
{
foreach (UpdateDetectedEventHandler UC in OnUpdateDetected.GetInvocationList())
{
UpdateDetectedEventArgs ud = new UpdateDetectedEventArgs();
ud.UpdateDetected = retValue;
EventControl.BeginInvoke(UC, new object[] { this, ud });
}
}
return(retValue);
}
//**************************************************************
// RunThread()
//**************************************************************
public void RunThread()
{
Debug.WriteLine("APPMANAGER: Starting Update");
//Load the AppStart config File
string ConfigFilePath = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
ConfigFilePath = Path.Combine(Directory.GetParent(ConfigFilePath).FullName, "AppStart.config");
Config = AppStartConfig.Load(ConfigFilePath);
try
{
//Mark in the manifest that a download is in progress. Persisted in
//manifest in case the app is stop & restarted during the download.
if (AppMan.Manifest.State.Phase == UpdatePhases.Complete)
{
AppMan.Manifest.State.Phase = UpdatePhases.Scavenging;
AppMan.Manifest.State.UpdateFailureCount = 0;
AppMan.Manifest.State.UpdateFailureEncoutered = false;
AppMan.Manifest.State.DownloadDestination = CreateTempDirectory();
if (AppMan.ChangeDetectionMode == ChangeDetectionModes.ServerManifestCheck)
{
ServerManifest SM = new ServerManifest();
SM.Load(AppMan.UpdateUrl);
//download from the web and desserialise it into the object
AppMan.Manifest.State.DownloadSource = SM.ApplicationUrl;
//new: krishna added this to enable specifying files explicitly instead of deep copying
//a directory using HTTP-DAV.
AppMan.Manifest.State.FilesToDownload = SM.FilesToDownload;
}
else
{
AppMan.Manifest.State.DownloadSource = AppMan.UpdateUrl;
}
AppMan.Manifest.Update();
}
//Scavenge Existing Directories
if (AppMan.Manifest.State.Phase == UpdatePhases.Scavenging)
{
Debug.WriteLine("APPMANAGER: Scavaging older versions");
Scavenge();
AppMan.Manifest.State.Phase = UpdatePhases.Downloading;
AppMan.Manifest.Update();
}
//Download the New Version
if (AppMan.Manifest.State.Phase == UpdatePhases.Downloading)
{
Debug.WriteLine("APPMANAGER: Downloading new version");
Download();
AppMan.Manifest.State.Phase = UpdatePhases.Validating;
AppMan.Manifest.Update();
}
//Validate the downloaded bits
if (AppMan.Manifest.State.Phase == UpdatePhases.Validating)
{
Debug.WriteLine("APPMANAGER: Downloading new version");
Validate();
AppMan.Manifest.State.Phase = UpdatePhases.Merging;
AppMan.Manifest.Update();
}
//Merge the existing version into the new version
if (AppMan.Manifest.State.Phase == UpdatePhases.Merging)
{
Debug.WriteLine("APPMANAGER: Merging current & new versions");
MergeDirectory(AppDomain.CurrentDomain.BaseDirectory, AppMan.Manifest.State.DownloadDestination);
AppMan.Manifest.State.Phase = UpdatePhases.Finalizing;
AppMan.Manifest.Update();
}
//Finalize the update. Rename the new version directory, etc...
if (AppMan.Manifest.State.Phase == UpdatePhases.Finalizing)
{
Debug.WriteLine("APPMANAGER: Finalizing update");
FinalizeUpdate();
}
//Reset Update State
AppMan.Manifest.State.Phase = UpdatePhases.Complete;
AppMan.Manifest.State.UpdateFailureCount = 0;
AppMan.Manifest.State.UpdateFailureEncoutered = false;
AppMan.Manifest.State.DownloadSource = "";
AppMan.Manifest.State.DownloadDestination = "";
AppMan.Manifest.State.NewVersionDirectory = "";
AppMan.Manifest.Update();
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
Debug.WriteLine("APPMANAGER: ThreadAborted: Updater Thread stopped, stopping download.");
return;
}
catch (Exception e)
{
UpdateEventArgs.FailureException = e;
}
if (AppMan.Manifest.State.Phase != UpdatePhases.Complete)
{
HandleUpdateFailure();
}
else
{
HandleUpdateSuccess();
}
}
//**************************************************************
// RunThread()
//**************************************************************
public void RunThread()
{
Debug.WriteLine("APPMANAGER: Starting Update");
//Load the AppStart config File
string ConfigFilePath =Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
ConfigFilePath = Path.Combine(Directory.GetParent(ConfigFilePath).FullName,"AppStart.config");
Config = AppStartConfig.Load(ConfigFilePath);
try
{
//Mark in the manifest that a download is in progress. Persisted in
//manifest in case the app is stop & restarted during the download.
if (AppMan.Manifest.State.Phase == UpdatePhases.Complete)
{
AppMan.Manifest.State.Phase = UpdatePhases.Scavenging;
AppMan.Manifest.State.UpdateFailureCount=0;
AppMan.Manifest.State.UpdateFailureEncoutered = false;
AppMan.Manifest.State.DownloadDestination = CreateTempDirectory();
if (AppMan.ChangeDetectionMode == ChangeDetectionModes.ServerManifestCheck)
{
ServerManifest SM = new ServerManifest();
SM.Load(AppMan.UpdateUrl);
//download from the web and desserialise it into the object
AppMan.Manifest.State.DownloadSource = SM.ApplicationUrl;
//new: krishna added this to enable specifying files explicitly instead of deep copying
//a directory using HTTP-DAV.
AppMan.Manifest.State.FilesToDownload = SM.FilesToDownload;
}
else
{
AppMan.Manifest.State.DownloadSource = AppMan.UpdateUrl;
}
AppMan.Manifest.Update();
}
//Scavenge Existing Directories
if (AppMan.Manifest.State.Phase == UpdatePhases.Scavenging)
{
Debug.WriteLine("APPMANAGER: Scavaging older versions");
Scavenge();
AppMan.Manifest.State.Phase=UpdatePhases.Downloading;
AppMan.Manifest.Update();
}
//Download the New Version
if (AppMan.Manifest.State.Phase == UpdatePhases.Downloading)
{
Debug.WriteLine("APPMANAGER: Downloading new version");
Download();
AppMan.Manifest.State.Phase = UpdatePhases.Validating;
AppMan.Manifest.Update();
}
//Validate the downloaded bits
if (AppMan.Manifest.State.Phase == UpdatePhases.Validating)
{
Debug.WriteLine("APPMANAGER: Downloading new version");
Validate();
AppMan.Manifest.State.Phase = UpdatePhases.Merging;
AppMan.Manifest.Update();
}
//Merge the existing version into the new version
if (AppMan.Manifest.State.Phase == UpdatePhases.Merging)
{
Debug.WriteLine("APPMANAGER: Merging current & new versions");
MergeDirectory(AppDomain.CurrentDomain.BaseDirectory,AppMan.Manifest.State.DownloadDestination);
AppMan.Manifest.State.Phase = UpdatePhases.Finalizing;
AppMan.Manifest.Update();
}
//Finalize the update. Rename the new version directory, etc...
if (AppMan.Manifest.State.Phase == UpdatePhases.Finalizing)
{
Debug.WriteLine("APPMANAGER: Finalizing update");
FinalizeUpdate();
}
//Reset Update State
AppMan.Manifest.State.Phase = UpdatePhases.Complete;
AppMan.Manifest.State.UpdateFailureCount=0;
AppMan.Manifest.State.UpdateFailureEncoutered = false;
AppMan.Manifest.State.DownloadSource = "";
AppMan.Manifest.State.DownloadDestination = "";
AppMan.Manifest.State.NewVersionDirectory = "";
AppMan.Manifest.Update();
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
Debug.WriteLine("APPMANAGER: ThreadAborted: Updater Thread stopped, stopping download.");
return;
}
catch (Exception e)
{
UpdateEventArgs.FailureException = e;
}
if (AppMan.Manifest.State.Phase != UpdatePhases.Complete)
HandleUpdateFailure();
else
HandleUpdateSuccess();
}
//**************************************************************
// OnAssemblyResolve()
// - This code is what does the auto-download of missing files
//**************************************************************
private Assembly OnAssemblyResolve(Object sender, ResolveEventArgs args)
{
//Check to see if the AssemblyLoad in this event is what caused the
//event to fire again. If so, the load failed.
if (LoadingAssembly == true)
{
return(null);
}
LoadingAssembly = true;
string[] AssemblyNameParts = args.Name.Split(new Char[] { ',' }, 2);
string AssemblyName = AssemblyNameParts[0] + ".dll";
string FilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, AssemblyName);
string url;
if (ChangeDetectionMode == ChangeDetectionModes.DirectFileCheck)
{
url = UpdateUrl + AssemblyName;
}
else
{
ServerManifest SM = new ServerManifest();
SM.Load(UpdateUrl);
url = Path.Combine(SM.ApplicationUrl, AssemblyName);
}
Debug.WriteLine("APPMANAGER: Auto-downloading assembly: " + AssemblyName + ". From: " + url);
try
{
WebFileLoader.UpdateFile(url, FilePath);
}
catch (Exception e)
{
Debug.WriteLine("APPMANAGER: Failed to download the missing assembly from the web server.");
Debug.WriteLine("APPMANAGER: " + e.ToString());
if (ShowDefaultUI)
{
MessageBox.Show("Unable to auto-download the missing parts of the application from:\r\n"
+ url + "\r\n\r\n"
+ "Make sure your connected to the network. If the problem persists re-install the application.");
}
return(null);
}
Assembly assembly;
try
{
assembly = Assembly.Load(args.Name);
}
catch (Exception e)
{
Debug.WriteLine("APPMANAGER: Failed to load the auto-downloaded assembly.");
Debug.WriteLine("APPMANAGER: " + e.ToString());
return(null);
}
finally
{
LoadingAssembly = false;
}
return(assembly);
}
//**************************************************************
// OnAssemblyResolve()
// - This code is what does the auto-download of missing files
//**************************************************************
private Assembly OnAssemblyResolve(Object sender,ResolveEventArgs args)
{
//Check to see if the AssemblyLoad in this event is what caused the
//event to fire again. If so, the load failed.
if (LoadingAssembly==true)
return null;
LoadingAssembly=true;
string[] AssemblyNameParts = args.Name.Split(new Char[] {','}, 2);
string AssemblyName = AssemblyNameParts[0] + ".dll";
string FilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, AssemblyName);
string url;
if (ChangeDetectionMode == ChangeDetectionModes.DirectFileCheck)
url = UpdateUrl + AssemblyName;
else
{
ServerManifest SM = new ServerManifest();
SM.Load(UpdateUrl);
url = Path.Combine(SM.ApplicationUrl,AssemblyName);
}
Debug.WriteLine("APPMANAGER: Auto-downloading assembly: " + AssemblyName + ". From: " + url);
try
{
WebFileLoader.UpdateFile(url, FilePath);
}
catch (Exception e)
{
Debug.WriteLine("APPMANAGER: Failed to download the missing assembly from the web server.");
Debug.WriteLine("APPMANAGER: " + e.ToString());
if (ShowDefaultUI)
MessageBox.Show("Unable to auto-download the missing parts of the application from:\r\n"
+ url + "\r\n\r\n"
+ "Make sure your connected to the network. If the problem persists re-install the application.");
return null;
}
Assembly assembly;
try
{
assembly = Assembly.Load(args.Name);
}
catch (Exception e)
{
Debug.WriteLine("APPMANAGER: Failed to load the auto-downloaded assembly.");
Debug.WriteLine("APPMANAGER: " + e.ToString());
return null;
}
finally
{
LoadingAssembly=false;
}
return assembly;
}
//**************************************************************
// CheckForUpdates()
// - Checks for an update
// - This is a sync call... normally called by the poller object
// on the poller thread.
//**************************************************************
public bool CheckForUpdates()
{
Debug.WriteLine("APPMANAGER: Checking for updates.");
bool retValue = false;
//If the OnCheckForUpdate event the caller is doing the check
if (OnCheckForUpdate != null)
{
retValue = OnCheckForUpdate(this, new EventArgs());
}
else //otherwise do the check ourselves
{
//If versioning is enabled check to see if the version file has changed.
if (ChangeDetectionMode == ChangeDetectionModes.ServerManifestCheck)
{
ServerManifest vm = new ServerManifest();
vm.Load(UpdateUrl);
retValue = vm.IsServerVersionNewer(GetLatestInstalledVersion());
}
else //If versioning is not enabled, check the files themselves
{
Resource currentResource;
foreach(Object r in Manifest.Resources.ResourceList)
{
currentResource = (Resource)(((DictionaryEntry)r).Value);
string url = UpdateUrl + currentResource.Name;
string FilePath = currentResource.FilePath;
if( WebFileLoader.CheckForFileUpdate(url, FilePath))
retValue = true;
}
}
}
//Fire the OnUpdateDetected Event on the UI thread
if (OnUpdateDetected != null)
{
foreach ( UpdateDetectedEventHandler UC in OnUpdateDetected.GetInvocationList())
{
UpdateDetectedEventArgs ud = new UpdateDetectedEventArgs();
ud.UpdateDetected = retValue;
EventControl.BeginInvoke(UC,new object[] {this,ud});
}
}
return retValue;
}
