/// <summary>
/// Checks the HOSTS file on startup, detecting existing redirects to the bf2web.gamespy
/// or gpcm/gpsp.gamespy urls
/// </summary>
private void DoHOSTSCheck()
{
// Make sure we can read and write
if (!HostsFile.CanRead)
{
UpdateStatus("- Cannot open HOSTS file for reading!");
}
else if (!HostsFile.CanWrite)
{
UpdateStatus("- Cannot open HOSTS file for writing!");
}
else
{
bool MatchFound = false;
// Login server redirect
if (HostsFile.HasEntry("gpcm.gamespy.com"))
{
MatchFound = true;
GpcmCheckbox.Checked = true;
GpcmAddress.Text = HostsFile.Get("gpcm.gamespy.com");
}
// Stat server redirect
if (HostsFile.HasEntry("bf2web.gamespy.com"))
{
MatchFound = true;
Bf2webCheckbox.Checked = true;
Bf2webAddress.Text = HostsFile.Get("bf2web.gamespy.com");
}
// Did we find any matches?
if (MatchFound)
{
UpdateStatus("- Found old redirect data in HOSTS file.");
RedirectsEnabled = true;
LockGroups();
RedirectButton.Enabled = true;
RedirectButton.Text = "Remove HOSTS Redirect";
UpdateStatus("- Locking HOSTS file");
HostsFile.Lock();
UpdateStatus("- All Done!");
}
}
}
/// <summary>
/// Preforms the pings required to fill the dns cache, and locks the HOSTS file.
/// The reason we ping, is because once the HOSTS file is locked, any request
/// made to a url (when the DNS cache is empty), will skip the hosts file, because
/// it cant be read. If we ping first, then the DNS cache fills up with the IP
/// addresses in the hosts file.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void RebuildDNSCache(object sender, DoWorkEventArgs e)
{
// Update status window
UdpateStatus("- Rebuilding DNS Cache... ", false);
foreach (KeyValuePair <String, String> IP in HostsFile.GetLines())
{
// Cancel if we have a cancelation request
if (HostsWorker.CancellationPending)
{
UpdateStatus("Cancelled!");
e.Cancel = true;
return;
}
Ping p = new Ping();
PingReply reply = p.Send(IP.Key);
}
UpdateStatus("Done");
// Lock the hosts file
UpdateStatus("- Locking HOSTS file");
HostsFile.Lock();
UpdateStatus("- All Done!");
}