/// <summary>
/// Removes all gamespy related redirects in the specified hosts file container
/// </summary>
/// <param name="HostFile"></param>
private static void RemoveRedirects(HostsFile HostFile)
{
// Remove Gamespy Addresses. Use a Bitwise OR here to execute both methods
if (HostFile.Remove(Bf2StatsHost) | HostFile.RemoveAll(GamespyHosts))
{
// Save Changes
HostFile.Save();
// Flush the Cache of the gamespy hosts
foreach (string host in GamespyHosts)
{
DnsFlushResolverCacheEntry(host);
}
// Flush stats server
DnsFlushResolverCacheEntry(Bf2StatsHost);
}
}
/// <summary>
/// Applies the specified IP address redirects for the chosen redirect method
/// </summary>
public static Task <bool> ApplyRedirectsAsync(ServiceProvider Provider, IProgress <TaskStep> Progress)
{
return(Task.Run(() =>
{
// Try and grab the IPAddresses of these providers
try
{
SetProviderIPAddress(Provider);
Program.Config.LastUsedProvider = Provider.Name;
}
catch (Exception e)
{
Progress.Report(new TaskStep(0, e.Message, true, e));
return false;
}
// Can't do anything with a dns server
if (RedirectMethod == RedirectMode.DnsServer)
{
return true;
}
// Remove old settings
if (RedirectsEnabled)
{
RemoveRedirects();
}
// === Apply new settings === //
// Grab hosts file base
HostsFile hFile = (RedirectMethod == RedirectMode.HostsFile)
? HostsFileSys as HostsFile
: HostsFileIcs as HostsFile;
// Unlock system hosts file
if (RedirectMethod == RedirectMode.HostsFile)
{
// Make sure file is writable
if (SysHostsFile.IsLocked && !HostsFileSys.UnLock())
{
Progress.Report(new TaskStep(0, "Cannot allow READ permissions on the Hosts File", true, hFile.LastException));
return false;
}
else
{
Progress.Report(new TaskStep(0, ""));
}
}
// Make sure file is writable
if (!hFile.CanRead)
{
Progress.Report(new TaskStep(1, "Cannot read the Hosts File", true, hFile.LastException));
return false;
}
else
{
Progress.Report(new TaskStep(1, ""));
}
// Make sure file is readable
if (!hFile.CanWrite)
{
Progress.Report(new TaskStep(2, "Cannot write to the Hosts File", true, hFile.LastException));
return false;
}
else
{
Progress.Report(new TaskStep(2, ""));
}
// ===== Set Redirect Addresses ===== //
// Stats Server
if (StatsServerAddress != null)
{
hFile.Set(Bf2StatsHost, StatsServerAddress);
}
// Gamespy Servers
if (GamespyServerAddress != null)
{
foreach (string hostname in GamespyHosts)
{
hFile.Set(hostname, GamespyServerAddress);
}
}
// Report Progress
Progress.Report(new TaskStep(3, "Gamespy Redirects Set"));
// ===== Save Redirects ===== //
int Step = 4;
string ErrDesc = "";
try
{
// Attempt to save the hosts file
ErrDesc = "Unable to Save Hosts File!";
hFile.Save();
// Report Success
Progress.Report(new TaskStep(Step++, "Hosts File Saved Successfully"));
// Rebuild the DNS Cache
ErrDesc = "Failed to Rebuild the DNS Cache";
RebuildDNSCache(CancellationToken.None);
// Report Success
Progress.Report(new TaskStep(Step++, "DNS Cache Rebuilt Successfully"));
}
catch (Exception e)
{
RemoveRedirects();
Progress.Report(new TaskStep(Step, ErrDesc, true, e));
return false;
}
// Lock system hosts File
if (RedirectMethod == RedirectMode.HostsFile)
{
if (HostsFileSys.Lock())
{
// Report Success
Progress.Report(new TaskStep(Step++, "Hosts File Read Permissions Removed"));
return true;
}
else
{
// Report Error
Progress.Report(new TaskStep(Step++, "Cannot Remove Hosts File Read Permissions!",
true, HostsFileSys.LastException));
return true;
}
}
return true;
}));
}