/// <summary> /// Retrieve a Stream to download and decrypt the specified Uri /// </summary> /// <param name="uri">Uri to download</param> /// <exception cref="NotSupportedException">Not logged in</exception> /// <exception cref="ApiException">Mega.co.nz service reports an error</exception> /// <exception cref="ArgumentNullException">uri is null</exception> /// <exception cref="ArgumentException">Uri is not valid (id and key are required)</exception> /// <exception cref="DownloadException">Checksum is invalid. Downloaded data are corrupted</exception> public Stream Download(Uri uri, CancellationToken?cancellationToken = null) { if (uri == null) { throw new ArgumentNullException("uri"); } EnsureLoggedIn(); string id; byte[] iv, metaMac, key; GetPartsFromUri(uri, out id, out iv, out metaMac, out key); // Retrieve download URL DownloadUrlRequestFromId downloadRequest = new DownloadUrlRequestFromId(id); DownloadUrlResponse downloadResponse = Request <DownloadUrlResponse>(downloadRequest); Stream dataStream = webClient.GetRequestRaw(new Uri(downloadResponse.Url)); Stream resultStream = new MegaAesCtrStreamDecrypter(dataStream, downloadResponse.Size, key, iv, metaMac); if (cancellationToken.HasValue) { resultStream = new CancellableStream(resultStream, cancellationToken.Value); } return(resultStream); }
/// <summary> /// Retrieve public properties of a file from a specified Uri /// </summary> /// <param name="uri">Uri to retrive properties</param> /// <exception cref="NotSupportedException">Not logged in</exception> /// <exception cref="ApiException">Mega.co.nz service reports an error</exception> /// <exception cref="ArgumentNullException">uri is null</exception> /// <exception cref="ArgumentException">Uri is not valid (id and key are required)</exception> public INodeInfo GetNodeFromLink(Uri uri) { if (uri == null) { throw new ArgumentNullException("uri"); } EnsureLoggedIn(); string id; byte[] iv, metaMac, key; GetPartsFromUri(uri, out id, out iv, out metaMac, out key); // Retrieve attributes DownloadUrlRequestFromId downloadRequest = new DownloadUrlRequestFromId(id); DownloadUrlResponse downloadResponse = Request <DownloadUrlResponse>(downloadRequest); return(new NodeInfo(id, downloadResponse, key)); }