// This function is used by Compute
internal static string GenerateUrlEncodedAuthorizationTokenWithHashCore(
string verb,
string resourceId,
string resourceType,
INameValueCollection headers,
IComputeHash stringHMACSHA256Helper,
out ArrayOwner payload)
{
// resourceId can be null for feed-read of /dbs
if (string.IsNullOrEmpty(verb))
{
throw new ArgumentException(RMResources.StringArgumentNullOrEmpty, nameof(verb));
}
if (resourceType == null)
{
throw new ArgumentNullException(nameof(resourceType)); // can be empty
}
if (stringHMACSHA256Helper == null)
{
throw new ArgumentNullException(nameof(stringHMACSHA256Helper));
}
if (headers == null)
{
throw new ArgumentNullException(nameof(headers));
}
// Order of the values included in the message payload is a protocol that clients/BE need to follow exactly.
// More headers can be added in the future.
// If any of the value is optional, it should still have the placeholder value of ""
// OperationType -> ResourceType -> ResourceId/OwnerId -> XDate -> Date
string verbInput = verb ?? string.Empty;
string resourceIdInput = resourceId ?? string.Empty;
string resourceTypeInput = resourceType ?? string.Empty;
string authResourceId = AuthorizationHelper.GetAuthorizationResourceIdOrFullName(resourceTypeInput, resourceIdInput);
int capacity = AuthorizationHelper.ComputeMemoryCapacity(verbInput, authResourceId, resourceTypeInput);
byte[] buffer = ArrayPool <byte> .Shared.Rent(capacity);
try
{
Span <byte> payloadBytes = buffer;
int length = AuthorizationHelper.SerializeMessagePayload(
payloadBytes,
verbInput,
authResourceId,
resourceTypeInput,
headers);
payload = new ArrayOwner(ArrayPool <byte> .Shared, new ArraySegment <byte>(buffer, 0, length));
byte[] hashPayLoad = stringHMACSHA256Helper.ComputeHash(payload.Buffer);
return(AuthorizationHelper.OptimizedConvertToBase64string(hashPayLoad));
}
catch
{
ArrayPool <byte> .Shared.Return(buffer);
throw;
}
}