/// <summary>
/// read from a website;
/// used to check for available patches
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
public static string ReadWebsite(string url)
{
string ReturnValue = null;
byte[] buf;
WebClientWithSession WClient = GetNewWebClient(url);
if (TLogging.DebugLevel > 0)
{
string urlToLog = url;
if (url.Contains("password"))
{
urlToLog = url.Substring(0, url.IndexOf("?")) + "?...";
}
TLogging.Log(urlToLog);
}
try
{
buf = WClient.Get(url);
if ((buf != null) && (buf.Length > 0))
{
ReturnValue = Encoding.ASCII.GetString(buf, 0, buf.Length);
}
else
{
TLogging.Log("server did not return anything? timeout?");
}
StoreSessionCookie(WClient.CookieContainer, url);
}
catch (System.Net.WebException e)
{
if (url.Contains("?"))
{
// do not show passwords in the log file which could be encoded in the parameters
TLogging.Log("Trying to download: " + url.Substring(0, url.IndexOf("?")) + "?..." + Environment.NewLine +
e.ToString(), TLoggingType.ToLogfile);
}
else
{
TLogging.Log("Trying to download: " + url + Environment.NewLine +
e.ToString(), TLoggingType.ToLogfile);
}
}
return(ReturnValue);
}
private static string WebClientUploadValues(string url, NameValueCollection parameters, int ANumberOfAttempts = 0)
{
byte[] buf;
WebClientWithSession WClient = GetNewWebClient(url);
try
{
buf = WClient.Get(url, parameters);
}
catch (System.Net.WebException ex)
{
TLogging.LogAtLevel(0, "WebClientUploadValues WebException: " + ex.ToString());
HttpWebResponse httpWebResponse = (HttpWebResponse)ex.Response;
if (httpWebResponse != null)
{
if (httpWebResponse.StatusCode == HttpStatusCode.NotFound)
{
throw new Exception(SESSION_ALREADY_CLOSED);
}
if (httpWebResponse.StatusCode == HttpStatusCode.InternalServerError)
{
// do not retry if code 500 returns
throw;
}
}
if (ANumberOfAttempts > 0)
{
// sleep for half a second
System.Threading.Thread.Sleep(500);
return(WebClientUploadValues(url, parameters, ANumberOfAttempts - 1));
}
throw;
}
StoreSessionCookie(WClient.CookieContainer, url);
if ((buf != null) && (buf.Length > 0))
{
return(Encoding.ASCII.GetString(buf, 0, buf.Length));
}
return(String.Empty);
}
/// <summary>
/// download a patch or other file from a website;
/// used for patching the program
/// </summary>
/// <param name="url"></param>
/// <param name="filename"></param>
/// <returns></returns>
public static Boolean DownloadFile(string url, string filename)
{
WebClientWithSession WClient = GetNewWebClient(url);
try
{
WClient.DownloadFile(url, filename);
StoreSessionCookie(WClient.CookieContainer, url);
return(true);
}
catch (Exception e)
{
TLogging.Log(e.Message + " url: " + url + " filename: " + filename);
}
return(false);
}
