public async Task <PingbackResponse> ReceivePingAsync(string requestBody, string ip, Action <PingbackRecord> pingSuccessAction)
{
try
{
if (string.IsNullOrWhiteSpace(requestBody))
{
_logger.LogError("Pingback requestBody is null");
return(PingbackResponse.GenericError);
}
var valid = ValidatePingRequest(requestBody);
if (!valid)
{
return(PingbackResponse.InvalidPingRequest);
}
_logger.LogInformation($"Processing Pingback from: {_sourceUrl} ({ip}) to {_targetUrl}");
var pingRequest = await _pingSourceInspector.ExamineSourceAsync(_sourceUrl, _targetUrl);
if (null == pingRequest)
{
return(PingbackResponse.InvalidPingRequest);
}
if (!pingRequest.SourceHasLink)
{
_logger.LogError("Pingback error: The source URI does not contain a link to the target URI.");
return(PingbackResponse.Error17SourceNotContainTargetUri);
}
if (pingRequest.ContainsHtml)
{
_logger.LogWarning("Spam detected on current Pingback...");
return(PingbackResponse.SpamDetectedFakeNotFound);
}
var(Id, Title) = await _pingbackRepository.GetPostIdTitle(pingRequest.TargetUrl, _dbConnection);
if (Id == Guid.Empty)
{
_logger.LogError($"Can not get post id and title for url '{pingRequest.TargetUrl}'");
return(PingbackResponse.Error32TargetUriNotExist);
}
_logger.LogInformation($"Post '{Id}:{Title}' is found for ping.");
var pinged = await _pingbackRepository.HasAlreadyBeenPinged(Id, pingRequest.SourceUrl, ip, _dbConnection);
if (pinged)
{
return(PingbackResponse.Error48PingbackAlreadyRegistered);
}
_logger.LogInformation("Adding received pingback...");
var uri = new Uri(_sourceUrl);
var obj = new PingbackRecord
{
Id = Guid.NewGuid(),
PingTimeUtc = DateTime.UtcNow,
Domain = uri.Host,
SourceUrl = _sourceUrl,
SourceTitle = pingRequest.Title,
TargetPostId = Id,
TargetPostTitle = Title,
SourceIp = ip
};
await _pingbackRepository.SavePingbackRecordAsync(obj, _dbConnection);
pingSuccessAction?.Invoke(obj);
return(PingbackResponse.Success);
}
catch (Exception e)
{
_logger.LogError(e, nameof(ReceivePingAsync));
return(PingbackResponse.GenericError);
}
}
public async Task <PingbackResponse> ReceivePingAsync(string requestBody, string ip, Action <PingbackEntity> pingSuccessAction)
{
try
{
if (string.IsNullOrWhiteSpace(requestBody))
{
_logger.LogError("Pingback requestBody is null");
return(PingbackResponse.GenericError);
}
var valid = ValidateRequest(requestBody);
if (!valid)
{
return(PingbackResponse.InvalidPingRequest);
}
_logger.LogInformation($"Processing Pingback from: {_sourceUrl} ({ip}) to {_targetUrl}");
var pingRequest = await _pingSourceInspector.ExamineSourceAsync(_sourceUrl, _targetUrl);
if (null == pingRequest)
{
return(PingbackResponse.InvalidPingRequest);
}
if (!pingRequest.SourceHasLink)
{
_logger.LogError("Pingback error: The source URI does not contain a link to the target URI.");
return(PingbackResponse.Error17SourceNotContainTargetUri);
}
if (pingRequest.ContainsHtml)
{
_logger.LogWarning("Spam detected on current Pingback...");
return(PingbackResponse.SpamDetectedFakeNotFound);
}
var(slug, pubDate) = GetSlugInfoFromUrl(pingRequest.TargetUrl);
var spec = new PostSpec(pubDate, slug);
var(id, title) = await _postRepo.SelectFirstOrDefaultAsync(spec, p => new Tuple <Guid, string>(p.Id, p.Title));
if (id == Guid.Empty)
{
_logger.LogError($"Can not get post id and title for url '{pingRequest.TargetUrl}'");
return(PingbackResponse.Error32TargetUriNotExist);
}
_logger.LogInformation($"Post '{id}:{title}' is found for ping.");
var pinged = _pingbackRepo.Any(p =>
p.TargetPostId == id &&
p.SourceUrl == pingRequest.SourceUrl &&
p.SourceIp.Trim() == ip);
if (pinged)
{
return(PingbackResponse.Error48PingbackAlreadyRegistered);
}
_logger.LogInformation("Adding received pingback...");
var uri = new Uri(_sourceUrl);
var obj = new PingbackEntity
{
Id = Guid.NewGuid(),
PingTimeUtc = DateTime.UtcNow,
Domain = uri.Host,
SourceUrl = _sourceUrl,
SourceTitle = pingRequest.Title,
TargetPostId = id,
TargetPostTitle = title,
SourceIp = ip
};
await _pingbackRepo.AddAsync(obj);
pingSuccessAction?.Invoke(obj);
return(PingbackResponse.Success);
}
catch (Exception e)
{
_logger.LogError(e, nameof(ReceivePingAsync));
return(PingbackResponse.GenericError);
}
}