public static UpdateWindow.ErrorState DownloadFile(string url, Uri serverAddress,
out Stream str, DownloadProgressChangedEventHandler wc_DownloadProgressChanged, UpdateWindow oUpdate)
{
ensureSensibleCacheFolderExists();
UpdateWindow.ErrorState er = UpdateWindow.ErrorState.Successful;
string updateCache = MainForm.Instance.Settings.MeGUIUpdateCache;
string localFilename = Path.Combine(updateCache, url);
if (File.Exists(localFilename))
{
FileInfo finfo = new FileInfo(localFilename);
if (finfo.Length == 0)
{
oUpdate.AddTextToLog(localFilename + " is empty. Deleting file.", ImageType.Information);
UpdateCacher.FlushFile(localFilename, oUpdate);
}
// check the zip file
if (localFilename.ToLower(System.Globalization.CultureInfo.InvariantCulture).EndsWith(".zip"))
{
try
{
ZipFile zipFile = new ZipFile(localFilename);
if (zipFile.TestArchive(true) == false)
{
oUpdate.AddTextToLog("Could not unzip " + localFilename + ". Deleting file.", ImageType.Information);
UpdateCacher.FlushFile(localFilename, oUpdate);
}
else
{
goto gotLocalFile;
}
}
catch
{
oUpdate.AddTextToLog("Could not unzip " + localFilename + ". Deleting file.", ImageType.Error);
UpdateCacher.FlushFile(localFilename, oUpdate);
}
}
else if (localFilename.ToLower(System.Globalization.CultureInfo.InvariantCulture).EndsWith(".7z")) // check the 7-zip file
{
try
{
SevenZipExtractor oArchive = new SevenZipExtractor(localFilename);
if (oArchive.Check() == false)
{
oUpdate.AddTextToLog("Could not extract " + localFilename + ". Deleting file.", ImageType.Information);
UpdateCacher.FlushFile(localFilename, oUpdate);
}
else
{
goto gotLocalFile;
}
}
catch
{
oUpdate.AddTextToLog("Could not extract " + localFilename + ". Deleting file.", ImageType.Error);
UpdateCacher.FlushFile(localFilename, oUpdate);
}
}
else
{
goto gotLocalFile;
}
}
WebClient wc = new WebClient();
// check for proxy authentication...
if (MainForm.Instance.Settings.UseHttpProxy == true)
{
WebProxy wprox = null;
ICredentials icred = null;
if (MainForm.Instance.Settings.HttpProxyUid != null)
{
icred = new NetworkCredential(MainForm.Instance.Settings.HttpProxyUid, MainForm.Instance.Settings.HttpProxyPwd);
}
wprox = new WebProxy(MainForm.Instance.Settings.HttpProxyAddress + ":" + MainForm.Instance.Settings.HttpProxyPort, true, null, icred);
WebRequest.DefaultWebProxy = wprox;
wc.Proxy = wprox;
}
else
{
wc.Proxy = null;
}
ManualResetEvent mre = new ManualResetEvent(false);
wc.DownloadFileCompleted += delegate(object sender, AsyncCompletedEventArgs e)
{
if (e.Error != null)
{
er = UpdateWindow.ErrorState.CouldNotDownloadFile;
}
mre.Set();
};
wc.DownloadProgressChanged += wc_DownloadProgressChanged;
wc.DownloadFileAsync(new Uri(serverAddress, url), localFilename);
mre.WaitOne();
gotLocalFile:
try
{
str = File.OpenRead(localFilename);
}
catch (IOException)
{
str = null;
return(UpdateWindow.ErrorState.CouldNotDownloadFile);
}
return(er);
}
