public string CanonicalizeHttpRequest(HttpRequestMessage request, string accountName)
{
// Add the method (GET, POST, PUT, or HEAD).
CanonicalizedString canonicalizedString = new CanonicalizedString(request.Method.Method);
// Add the Content-* HTTP headers. Empty values are allowed.
if (request.Content != null)
{
canonicalizedString.AppendCanonicalizedElement(HttpUtility.CombineHttpHeaderValues(request.Content.Headers.ContentEncoding));
canonicalizedString.AppendCanonicalizedElement(HttpUtility.CombineHttpHeaderValues(request.Content.Headers.ContentLanguage));
AuthenticationUtility.AppendCanonicalizedContentLengthHeader(canonicalizedString, request);
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentMD5 == null) ? null :
Convert.ToBase64String(request.Content.Headers.ContentMD5));
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentType == null) ? null :
request.Content.Headers.ContentType.ToString());
}
else
{
canonicalizedString.AppendCanonicalizedElement(null);
canonicalizedString.AppendCanonicalizedElement(null);
if (request.Method == HttpMethod.Put || request.Method == HttpMethod.Delete)
{
canonicalizedString.AppendCanonicalizedElement("0");
}
else
{
canonicalizedString.AppendCanonicalizedElement(null);
}
canonicalizedString.AppendCanonicalizedElement(null);
canonicalizedString.AppendCanonicalizedElement(null);
}
// Add the Date HTTP header (only if the x-ms-date header is not being used)
AuthenticationUtility.AppendCanonicalizedDateHeader(canonicalizedString, request);
// Add If-* headers and Range header
canonicalizedString.AppendCanonicalizedElement(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.IfModifiedSince));
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetFirstHeaderValue(request.Headers.IfMatch));
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetFirstHeaderValue(request.Headers.IfNoneMatch));
canonicalizedString.AppendCanonicalizedElement(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.IfUnmodifiedSince));
canonicalizedString.AppendCanonicalizedElement((request.Headers.Range == null) ? null :
CommonUtils.GetFirstHeaderValue(request.Headers.Range.Ranges));
// Add any custom headers
AuthenticationUtility.AppendCanonicalizedCustomHeaders(canonicalizedString, request);
// Add the canonicalized URI element
string resourceString = AuthenticationUtility.GetCanonicalizedResourceString(request.RequestUri, accountName);
canonicalizedString.AppendCanonicalizedElement(resourceString);
return(canonicalizedString.ToString());
}
/// <summary>
/// Gets the blob's properties from the response.
/// </summary>
/// <param name="response">The web response.</param>
/// <returns>The blob's properties.</returns>
public static BlobProperties GetProperties(HttpResponseMessage response)
{
BlobProperties properties = new BlobProperties();
if (response.Content != null)
{
properties.LastModified = response.Content.Headers.LastModified;
properties.ContentEncoding = HttpUtility.CombineHttpHeaderValues(response.Content.Headers.ContentEncoding);
properties.ContentLanguage = HttpUtility.CombineHttpHeaderValues(response.Content.Headers.ContentLanguage);
properties.ContentMD5 = (response.Content.Headers.ContentMD5 == null) ? null :
Convert.ToBase64String(response.Content.Headers.ContentMD5);
properties.ContentType = (response.Content.Headers.ContentType == null) ? null :
response.Content.Headers.ContentType.ToString();
}
else
{
properties.LastModified = null;
properties.ContentEncoding = null;
properties.ContentLanguage = null;
properties.ContentMD5 = null;
properties.ContentType = null;
}
properties.CacheControl = (response.Headers.CacheControl == null) ? null :
response.Headers.CacheControl.ToString();
properties.ETag = (response.Headers.ETag == null) ? null :
response.Headers.ETag.ToString();
// Get blob type
string blobType = response.Headers.GetHeaderSingleValueOrDefault(Constants.HeaderConstants.BlobType);
if (!string.IsNullOrEmpty(blobType))
{
properties.BlobType = (BlobType)Enum.Parse(typeof(BlobType), blobType, true);
}
// Get lease properties
properties.LeaseStatus = GetLeaseStatus(response);
properties.LeaseState = GetLeaseState(response);
properties.LeaseDuration = GetLeaseDuration(response);
// Get the content length. Prioritize range and x-ms over content length for the special cases.
string contentLengthHeader = response.Headers.GetHeaderSingleValueOrDefault(Constants.HeaderConstants.ContentLengthHeader);
if ((response.Content.Headers.ContentRange != null) &&
response.Content.Headers.ContentRange.HasLength)
{
properties.Length = response.Content.Headers.ContentRange.Length.Value;
}
else if (!string.IsNullOrEmpty(contentLengthHeader))
{
properties.Length = long.Parse(contentLengthHeader);
}
else if (response.Content.Headers.ContentLength.HasValue)
{
properties.Length = response.Content.Headers.ContentLength.Value;
}
else
{
properties.Length = -1;
}
return(properties);
}
public string CanonicalizeHttpRequest(HttpRequestMessage request, string accountName)
{
// The first element should be the Method of the request.
// I.e. GET, POST, PUT, or HEAD.
CanonicalizedString canonicalizedString = new CanonicalizedString(request.Method.Method);
// The next elements are Content*
// If any element is missing it may be empty.
if (request.Content != null)
{
canonicalizedString.AppendCanonicalizedElement(HttpUtility.CombineHttpHeaderValues(request.Content.Headers.ContentEncoding));
canonicalizedString.AppendCanonicalizedElement(HttpUtility.CombineHttpHeaderValues(request.Content.Headers.ContentLanguage));
long contentLength = request.Content.Headers.ContentLength.HasValue ? request.Content.Headers.ContentLength.Value : -1;
canonicalizedString.AppendCanonicalizedElement(contentLength == -1 ? string.Empty : contentLength.ToString());
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentMD5 == null) ? string.Empty :
Convert.ToBase64String(request.Content.Headers.ContentMD5));
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentType == null) ? string.Empty :
request.Content.Headers.ContentType.ToString());
}
else
{
canonicalizedString.AppendCanonicalizedElement(string.Empty);
canonicalizedString.AppendCanonicalizedElement(string.Empty);
if ((request.Method == HttpMethod.Put) ||
(request.Method == HttpMethod.Delete))
{
canonicalizedString.AppendCanonicalizedElement("0");
}
else
{
canonicalizedString.AppendCanonicalizedElement(string.Empty);
}
canonicalizedString.AppendCanonicalizedElement(string.Empty);
canonicalizedString.AppendCanonicalizedElement(string.Empty);
}
// If x-ms-date header exists, Date should be empty string
string dateValue = HttpResponseMessageUtils.GetHeaderSingleValueOrDefault(request.Headers, Constants.HeaderConstants.Date);
if (!string.IsNullOrEmpty(dateValue))
{
dateValue = string.Empty;
}
else
{
dateValue = CommonUtils.GetDateTimeValueOrDefault(request.Headers.Date);
}
canonicalizedString.AppendCanonicalizedElement(dateValue);
// Conditionals and range
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetDateTimeValueOrDefault(request.Headers.IfModifiedSince));
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetSingleValueOrDefault(request.Headers.IfMatch));
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetSingleValueOrDefault(request.Headers.IfNoneMatch));
canonicalizedString.AppendCanonicalizedElement(CommonUtils.GetDateTimeValueOrDefault(request.Headers.IfUnmodifiedSince));
canonicalizedString.AppendCanonicalizedElement((request.Headers.Range == null) ? string.Empty :
CommonUtils.GetSingleValueOrDefault(request.Headers.Range.Ranges));
// Rest of the headers
CanonicalizationHelper.AddCanonicalizedHeaders(request, canonicalizedString);
// Now we append the canonicalized resource element
canonicalizedString.AppendCanonicalizedElement(CanonicalizationHelper.GetCanonicalizedResourceForSharedKey(request.RequestUri, accountName));
return(canonicalizedString.Value);
}
