public override void OnActionExecuting(ActionExecutingContext context)
{
EnsureArg.IsNotNull(context, nameof(context));
if (!context.HttpContext.Request.Headers.TryGetValue(HeaderNames.Accept, out var acceptHeaderValue) ||
acceptHeaderValue.Count != 1 ||
!string.Equals(acceptHeaderValue[0], KnownContentTypes.JsonContentType, StringComparison.OrdinalIgnoreCase))
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedHeaderValue, HeaderNames.Accept));
}
if (!context.HttpContext.Request.Headers.TryGetValue(PreferHeaderName, out var preferHeaderValue) ||
preferHeaderValue.Count != 1 ||
!string.Equals(preferHeaderValue[0], PreferHeaderExpectedValue, StringComparison.OrdinalIgnoreCase))
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedHeaderValue, PreferHeaderName));
}
IQueryCollection queryCollection = context.HttpContext.Request.Query;
// Validate that the request does not contain query parameters that are not supported.
foreach (string paramName in queryCollection.Keys)
{
if (!_supportedQueryParams.Contains(paramName))
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedParameter, paramName));
}
}
if (!queryCollection.TryGetValue(KnownQueryParameterNames.DestinationType, out StringValues destinationTypeValue) ||
string.IsNullOrWhiteSpace(destinationTypeValue) ||
!_exportDestinationClientFactory.IsSupportedDestinationType(destinationTypeValue))
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedParameterValue, KnownQueryParameterNames.DestinationType));
}
if (!queryCollection.TryGetValue(KnownQueryParameterNames.DestinationConnectionSettings, out StringValues destinationSettingValue) ||
string.IsNullOrWhiteSpace(destinationSettingValue))
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedParameterValue, KnownQueryParameterNames.DestinationConnectionSettings));
}
// Validate whether the connection string is base-64 encoded.
try
{
Encoding.UTF8.GetString(Convert.FromBase64String(destinationSettingValue));
}
catch (Exception)
{
throw new RequestNotValidException(string.Format(Resources.UnsupportedParameterValue, KnownQueryParameterNames.DestinationConnectionSettings));
}
}
public ValidateExportRequestFilterAttributeTests()
{
_exportDestinationClientFactory.IsSupportedDestinationType(SupportedDestinationType).Returns(true);
_filter = new ValidateExportRequestFilterAttribute(_exportDestinationClientFactory);
}