/// <summary>
/// Method responsible for checking the proxy and proxy authentication type and setting the
/// appropriate credentials. If the NTLM authentication is used then
/// if the username and password are not provided then we use null values. For
/// all other authentication schemes we need a username and password.
/// </summary>
/// <param name="backgroundCopyJob">BackgroundJob on which we need to set the credentials.</param>
/// <param name="task">DownloadTask. Provides the infos about download credentials</param>
private static void VerifyAndSetBackgroundCopyJobProxy(IBackgroundCopyJob backgroundCopyJob, DownloadTask task)
{
// Specify the proxy URL
// see also http://msdn.microsoft.com/library/en-us/bits/bits/ibackgroundcopyjob_setproxysettings.asp
try
{
IWebProxy proxy = task.DownloadItem.Proxy;
var sourceUri = new Uri(task.DownloadItem.File.Source);
Uri proxyUri = proxy.GetProxy(sourceUri);
//trim trailing '/' because it causes BITS to throw an exception
string proxyUriStr = proxyUri.ToString().TrimEnd('/');
if (!proxy.IsBypassed(proxyUri))
{
backgroundCopyJob.SetProxySettings(BG_JOB_PROXY_USAGE.BG_JOB_PROXY_USAGE_OVERRIDE, proxyUriStr, null);
}
//specify proxy credentials
if (proxy.Credentials != null)
{
ICredentials creds = proxy.Credentials;
var copyJob = (IBackgroundCopyJob2)backgroundCopyJob;
var credentials = new BG_AUTH_CREDENTIALS();
credentials.Credentials.Basic.UserName =
string.IsNullOrEmpty(creds.GetCredential(sourceUri, "NTLM").Domain)
?
creds.GetCredential(sourceUri, "NTLM").UserName
:
creds.GetCredential(sourceUri, "NTLM").Domain + "\\" +
creds.GetCredential(sourceUri, "NTLM").UserName;
credentials.Credentials.Basic.Password = creds.GetCredential(sourceUri, "NTLM").Password;
credentials.Scheme = BG_AUTH_SCHEME.BG_AUTH_SCHEME_NTLM;
credentials.Target = BG_AUTH_TARGET.BG_AUTH_TARGET_PROXY;
copyJob.SetCredentials(ref credentials);
}
}
catch (Exception e)
{
Logger.Error("Error in VerifyAndSetBackgroundCopyJobProxy():", e);
}
}