public async Task <ChannelIdentifier> AuthorizeDevice(HttpContext httpContext)
{
if (httpContext == null)
{
throw new ArgumentNullException(nameof(httpContext));
}
if (!httpContext.Request.Headers.TryGetValue(CloudHeaderNames.ChannelAccessToken, out var channelAccessToken))
{
throw new UnauthorizedAccessException();
}
var identityEntity = await _repositoryService.FindIdentityEntityByChannelAccessToken(channelAccessToken).ConfigureAwait(false);
if (identityEntity.Key == null)
{
throw new UnauthorizedAccessException();
}
if (identityEntity.Value.IsLocked)
{
throw new UnauthorizedAccessException();
}
var channelEntity = identityEntity.Value.Channels.First(c => string.Equals(c.Value.AccessToken.Value, channelAccessToken, StringComparison.Ordinal));
if (channelEntity.Key == null)
{
throw new UnauthorizedAccessException();
}
return(new ChannelIdentifier(identityEntity.Key, channelEntity.Key));
}