public HostsViewModel()
{
Name = "HOSTS";
CanDirty = true;
_isHostsEnabled = Utilities.Hosts.HostFileExists;
_disabledHostFile = Path.Combine(Utilities.Hosts.HostFileDirectory, "hosts_disabled");
_document = new TextDocument();
Document.TextChanged += Document_TextChanged;
LoadHostsFiles();
SelectedHostFile = HostFiles.FirstOrDefault();
SetMessage(HostFiles.Count + " hosts file(s) were discovered and added to the list.", MessageType.Success);
}
public void SetHostFileContent(HostsEntryViewModel hostEntry)
{
ClearMessage();
IsBusy = true;
try
{
//Create or Update host file content
File.WriteAllText(Utilities.Hosts.HostFilePath, hostEntry.Content);
//if (SelectedHostFile != HostFiles.First())
HostFiles.First().Content = GetHostFileContent();
if (SelectedHostFile.IsSystem)
{
IgnoreFileContentChange = true;
Document.Text = HostFiles.First().Content;
IgnoreFileContentChange = false;
}
SetMessage("Done! Hosts file content was updated.", MessageType.Success);
string flushError;
if (AutoFlushDns)
{
Utilities.Common.TryFlushDns(out flushError);
}
if (AutoLaunchUrls)
{
StartPredefinedUrls();
}
}
catch (UnauthorizedAccessException uaEx)
{
SetMessage(InvalidAccessMessage, MessageType.Failure, uaEx.Message);
}
catch (Exception ex)
{
SetMessage("Some unexpected issue occurred while updating the hosts file.", MessageType.Failure, ex.Message);
}
finally
{
IsBusy = false;
}
}
private void EnableHostFile()
{
ClearMessage();
IsBusy = true;
try
{
//Check if hosts exist
if (Utilities.Hosts.HostFileExists)
{
//if does skip and return
SetMessage("Good to go! Hosts file already exists.", MessageType.Information);
return;
}
//If there are no active hosts file and there is a previously disabled hosts file, rename it to hosts
//Rename hosts_disabled to hosts
if (File.Exists(_disabledHostFile))
{
File.Move(_disabledHostFile, Utilities.Hosts.HostFilePath);
}
else //Create a new file with hosts name and dump the content as appears in the application
{
File.WriteAllText(Utilities.Hosts.HostFilePath, HostFiles.First().Content);
}
//Refresh host file content
HostFiles.First().Content = GetHostFileContent();
if (SelectedHostFile.IsSystem)
{
Document.Text = SelectedHostFile.Content;
SelectedHostFile.IsDirty = false;
}
SetMessage("Done! Your system's hosts file has been enabled.", MessageType.Success);
string flushError;
if (AutoFlushDns)
{
Utilities.Common.TryFlushDns(out flushError);
}
if (AutoLaunchUrls)
{
StartPredefinedUrls();
}
}
catch (UnauthorizedAccessException uaEx)
{
SetMessage(InvalidAccessMessage, MessageType.Failure, uaEx.Message);
_isHostsEnabled = false;
}
catch (SecurityException secEx)
{
_isHostsEnabled = false;
SetMessage("Can't enable the hosts. :( Looks like your user account is facing some security permissions issue.", MessageType.Failure, secEx.Message);
}
catch (IOException ioEx)
{
_isHostsEnabled = false;
SetMessage("Can't enable the hosts. :( Looks like an internal disk related problem occurred.", MessageType.Failure, ioEx.Message);
}
catch (Exception ex)
{
_isHostsEnabled = false;
SetMessage("An unexpected issue occurred while enabling hosts file.", MessageType.Failure, ex.Message);
}
finally
{
IsBusy = false;
}
}
