public async Task Kafka(
[KafkaTrigger(
"notification.services.tonlabs.io:29092",
"notifications-9",
ConsumerGroup = "$Default",
Protocol = BrokerProtocol.SaslPlaintext,
AuthenticationMode = BrokerAuthenticationMode.ScramSha512,
Username = "******",
Password = "******")]
KafkaEventData <string> kafkaEvent, ILogger log)
{
var hash = string.Empty;
var nonce = string.Empty;
var encrypted = string.Empty;
try
{
var input = kafkaEvent.Value.Split(' ');
hash = input[0];
nonce = input[1].Base64ToHex();
encrypted = input[2];
var eventReceiver = _eventReceivers
.Query <EventReceiver>($"PartitionKey eq '{hash}'")
.Single();
if (eventReceiver.Url != "https://freeton.org" && !eventReceiver.IsVerified)
{
return;
}
var context = new Context().WithLogger(log);
var client = _httpClientFactory.CreateClient("pollyClient");
var request = new HttpRequestMessage(HttpMethod.Post, eventReceiver.Url);
request.Content = new StringContent(encrypted, Encoding.UTF8, "text/plain");
request.SetPolicyExecutionContext(context);
var response = await client.SendAsync(request);
log.LogInformation(nameof(Kafka), new[] { new { hash, statusCode = response.StatusCode } });
await _kafkaMessages.AddEntityAsync(new KafkaMessage
{
PartitionKey = hash,
RowKey = hash,
Nonce = nonce,
Encrypted = encrypted
});
}
catch (Exception ex)
{
log.LogError(
ex,
nameof(Kafka),
new[] { new
{
hash,
nonce,
encrypted
} });
throw;
}
}
public async Task <IActionResult> Verify(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "verify/{token}")] HttpRequest req,
string token,
ILogger log)
{
try
{
log.LogInformation(nameof(Verify), new[] { new { token } });
var httpClient = new HttpClient();
var eventReceiver = _eventReceivers
.Query <EventReceiver>($"Token eq '{token}'")
.Single();
if (eventReceiver.IsVerified)
{
return(new OkObjectResult("This domain already was verified"));
}
var verifiers = new Func <Task <bool> >[]
{
async() =>
{
var response = await httpClient.GetAsync(eventReceiver.Url);
var content = await response.Content.ReadAsStringAsync();
return(response.StatusCode == HttpStatusCode.OK &&
content == token);
},
async() =>
{
var uri = new Uri(eventReceiver.Url);
var lookup = new LookupClient(new[]
{
IPAddress.Parse("8.8.8.8")
});
return((await lookup
.QueryAsync(uri.Host, QueryType.TXT, QueryClass.IN))
.Answers
.TxtRecords()
.Any(x => x.Text.Any(t => t == token)));
}
};
return(new OkObjectResult(await Verify(eventReceiver, verifiers)));
}
catch (Exception ex)
{
log.LogError(
ex,
nameof(Verify),
new[] { new
{
token
} });
throw;
}
}
public async Task <IActionResult> Register(
[HttpTrigger(AuthorizationLevel.Anonymous, "post")] HttpRequest req, ILogger log)
{
var query = string.Empty;
try
{
var responseMessage = string.Empty;
var token = Guid.NewGuid().ToString().Replace("-", "");
query = await req.ReadAsStringAsync();
var queryString = HttpUtility.ParseQueryString(query);
var hash = queryString["hash"];
var url = queryString["data"].Base64ToUtf8();
log.LogInformation(
nameof(Register),
new[] { new
{
hash,
url,
token
} });
if (!Uri.TryCreate(url, UriKind.Absolute, out Uri _))
{
return(new OkObjectResult("Please provide absolute URL."));
}
var entity = _eventReceivers
.Query <EventReceiver>($"PartitionKey eq '{hash }'")
.SingleOrDefault();
if (entity == null)
{
var response = await _eventReceivers.AddEntityAsync(new EventReceiver
{
PartitionKey = hash,
RowKey = hash,
Url = url,
Token = token
});
responseMessage += $"URL '{url}' successfully added.\n\n";
}
else if (entity.Url != url)
{
entity.Url = url;
entity.IsVerified = false;
entity.Token = token;
var response = await _eventReceivers.UpdateEntityAsync(entity, entity.ETag);
responseMessage += "URL '{url}' successfully updated.\n\n";
}
if (entity == null || !entity.IsVerified)
{
responseMessage +=
$"Your token is: {token}\n\n" +
$"Please confirm ownership of entered domain.\n" +
$"You can verify it with one of the options:\n" +
$" - respond to HTTP GET request with a token\n" +
$" - add token TXT record to your DNS configuration with\n\n" +
$"After you will complete this step you can " +
$"proceed with domain verification by navigating " +
$"to: https://ton.azurewebsites.net/api/verify/{token}\n\n";
}
return(new OkObjectResult(responseMessage));
}
catch (Exception ex)
{
log.LogError(
ex,
nameof(Register),
new[] { new
{
query
} });
throw;
}
}