/// <summary>
/// Applies the condition for a source blob to the web request.
/// </summary>
/// <param name="request">The request to be modified.</param>
/// <param name="accessCondition">Access condition to be added to the request.</param>
internal static void ApplyAccessConditionToSource(this HttpRequestMessage request, AccessCondition accessCondition)
{
if (accessCondition != null)
{
if (!string.IsNullOrEmpty(accessCondition.IfMatchETag))
{
request.Headers.Add(Constants.HeaderConstants.SourceIfMatchHeader, accessCondition.IfMatchETag);
}
if (!string.IsNullOrEmpty(accessCondition.IfNoneMatchETag))
{
request.Headers.Add(Constants.HeaderConstants.SourceIfNoneMatchHeader, accessCondition.IfNoneMatchETag);
}
if (accessCondition.IfModifiedSinceTime.HasValue)
{
request.Headers.Add(
Constants.HeaderConstants.SourceIfModifiedSinceHeader,
HttpUtility.ConvertDateTimeToHttpString(accessCondition.IfModifiedSinceTime.Value));
}
if (accessCondition.IfNotModifiedSinceTime.HasValue)
{
request.Headers.Add(
Constants.HeaderConstants.SourceIfUnmodifiedSinceHeader,
HttpUtility.ConvertDateTimeToHttpString(accessCondition.IfNotModifiedSinceTime.Value));
}
if (!string.IsNullOrEmpty(accessCondition.LeaseId))
{
throw new InvalidOperationException(SR.LeaseConditionOnSource);
}
}
}
public void SignRequest(HttpWebRequest request, OperationContext operationContext)
{
string dateString = HttpUtility.ConvertDateTimeToHttpString(DateTime.UtcNow);
request.Headers.Add(Constants.HeaderConstants.Date, dateString);
if (this.credentials.IsSharedKey)
{
// Canonicalize request
string message = this.canonicalizer.CanonicalizeHttpRequest(request, this.resourceAccountName);
// Compute hash
string computedBase64Signature = CryptoUtility.ComputeHmac256(this.credentials.KeyValue, message);
// Add authorization headers
if (!string.IsNullOrEmpty(this.credentials.KeyName))
{
request.Headers.Add(Constants.HeaderConstants.KeyNameHeader, this.credentials.KeyName);
}
request.Headers.Add(
"Authorization",
string.Format(CultureInfo.InvariantCulture, "{0} {1}:{2}", this.canonicalizer.AuthorizationScheme, this.credentials.AccountName, computedBase64Signature));
}
}
protected override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
string dateString = HttpUtility.ConvertDateTimeToHttpString(DateTimeOffset.UtcNow);
request.Headers.Add(Constants.HeaderConstants.Date, dateString);
if (this.credentials.IsSharedKey)
{
string message = this.canonicalizer.CanonicalizeHttpRequest(request, this.accountName);
#if RTMD
string signature = CryptoUtility.ComputeHmac256(this.credentials.KeyValue, message);
#else
string signature = CryptoUtility.ComputeHmac256(this.credentials.ExportKey(), message);
#endif
if (!string.IsNullOrEmpty(this.credentials.KeyName))
{
request.Headers.Add(Constants.HeaderConstants.KeyNameHeader, this.credentials.KeyName);
}
request.Headers.Authorization = new AuthenticationHeaderValue(
this.canonicalizer.AuthorizationScheme,
string.Format(CultureInfo.InvariantCulture, "{0}:{1}", this.credentials.AccountName, signature));
}
return(base.SendAsync(request, cancellationToken));
}
/// <summary>
/// Applies the condition to the web request.
/// </summary>
/// <param name="request">The request to be modified.</param>
/// <param name="accessCondition">Access condition to be added to the request.</param>
internal static void ApplyAccessCondition(this HttpWebRequest request, AccessCondition accessCondition)
{
if (accessCondition != null)
{
if (!string.IsNullOrEmpty(accessCondition.IfMatchETag))
{
request.Headers[HttpRequestHeader.IfMatch] = accessCondition.IfMatchETag;
}
if (!string.IsNullOrEmpty(accessCondition.IfNoneMatchETag))
{
request.Headers[HttpRequestHeader.IfNoneMatch] = accessCondition.IfNoneMatchETag;
}
if (accessCondition.IfModifiedSinceTime.HasValue)
{
// Not using this property will cause Restricted property exception to be thrown
request.IfModifiedSince = accessCondition.IfModifiedSinceTime.Value.UtcDateTime;
}
if (accessCondition.IfNotModifiedSinceTime.HasValue)
{
request.Headers[HttpRequestHeader.IfUnmodifiedSince] =
HttpUtility.ConvertDateTimeToHttpString(accessCondition.IfNotModifiedSinceTime.Value);
}
if (!string.IsNullOrEmpty(accessCondition.LeaseId))
{
request.Headers[Constants.HeaderConstants.LeaseIdHeader] = accessCondition.LeaseId;
}
}
}
