/// <summary>
/// Downloads and imports a remote key file.
/// </summary>
/// <exception cref="WebException">The key file could not be downloaded from the internet.</exception>
/// <exception cref="SignatureException">The downloaded key file is damaged.</exception>
/// <exception cref="IOException">A problem occurs while writing trust configuration.</exception>
/// <exception cref="UnauthorizedAccessException">Write access to the trust configuration is not permitted.</exception>
private void DownloadKey([NotNull] Uri keyUri)
{
var download = new DownloadMemory(keyUri);
_handler.RunTask(download);
try
{
_openPgp.ImportKey(download.GetData());
}
#region Error handling
catch (InvalidDataException ex)
{
// Wrap exception since only certain exception types are allowed
throw new SignatureException(ex.Message, ex);
}
#endregion
}
/// <inheritdoc/>
public Catalog DownloadCatalog(FeedUri source)
{
#region Sanity checks
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
#endregion
if (source.IsFile)
{
return(XmlStorage.LoadXml <Catalog>(source.LocalPath));
}
var download = new DownloadMemory(source);
_handler.RunTask(download);
var data = download.GetData();
_trustManager.CheckTrust(data, source);
return(XmlStorage.LoadXml <Catalog>(new MemoryStream(data)));
}
private void Download(FeedUri feedUri)
{
SetLastCheckAttempt(feedUri);
try
{
var download = new DownloadMemory(feedUri);
_handler.RunTask(download);
ImportFeed(download.GetData(), feedUri);
}
catch (WebException ex) when(!feedUri.IsLoopback)
{
if (_handler.Verbosity == Verbosity.Batch)
{
Log.Info(string.Format(Resources.FeedDownloadError, feedUri) + " " + Resources.TryingFeedMirror);
}
else
{
Log.Warn(string.Format(Resources.FeedDownloadError, feedUri) + " " + Resources.TryingFeedMirror);
}
try
{
var download = new DownloadMemory(GetMirrorUrl(feedUri))
{
NoCache = Refresh
};
_handler.RunTask(download);
ImportFeed(download.GetData(), feedUri);
}
catch (WebException)
{
// Report the original problem instead of mirror errors
throw ex.PreserveStack();
}
}
}
