public ActionResult SASBlobDownload(Models.BlobDownloadModel sasModel)
{
CloudBlobContainer container = GetCloudBlobContainer(sasModel.containerName);
CloudBlockBlob blob = container.GetBlockBlobReference(sasModel.blobName);
sasModel = GetBlobSasUri(blob, sasModel);
sasModel.URI = new Uri(blob.Uri + sasModel.generatedSAS);
ViewBag.Message = sasModel.URI;
return(View());
}
static BlobDownloadModel GetBlobSasUri(CloudBlockBlob blob, Models.BlobDownloadModel model)
{
//Set the expiry time and permissions for the blob.
//In this case, the start time is specified as a few minutes in the past, to mitigate clock skew.
//The shared access signature will be valid immediately.
SharedAccessBlobPolicy sasConstraints = new SharedAccessBlobPolicy();
sasConstraints.SharedAccessStartTime = DateTimeOffset.UtcNow.AddMinutes(model.startTime);
sasConstraints.SharedAccessExpiryTime = DateTimeOffset.UtcNow.AddHours(model.endTime);
sasConstraints.Permissions = SharedAccessBlobPermissions.Read; //| SharedAccessBlobPermissions.Write;
//Generate the shared access signature on the blob, setting the constraints directly on the signature.
model.generatedSAS = blob.GetSharedAccessSignature(sasConstraints);
//Return the URI string for the container, including the SAS token.
//return blob.Uri + sasBlobToken;
return(model);
}
