protected async Task <bool> ResolveChallenges(AcmeProtocolClient acme)
{
if (AcmeState.PendingStatus == _state.Order?.Payload?.Status)
{
_logger.LogInformation("Order is pending, resolving Authorizations");
if (_state.Authorizations == null)
{
_state.Authorizations = new Dictionary <string, Authorization>();
}
foreach (var authzUrl in _state.Order.Payload.Authorizations)
{
var authz = await acme.GetAuthorizationDetailsAsync(authzUrl);
_state.Authorizations[authzUrl] = authz;
if (AcmeState.PendingStatus == authz.Status)
{
foreach (var chlng in authz.Challenges)
{
if (string.IsNullOrEmpty(_options.ChallengeType) ||
_options.ChallengeType == chlng.Type)
{
var chlngValidation = AuthorizationDecoder.DecodeChallengeValidation(
authz, chlng.Type, acme.Signer);
if (_options.ChallengeHandler(_services, chlngValidation))
{
_logger.LogInformation("Challenge Handler has handled challenge:");
_logger.LogInformation(JsonConvert.SerializeObject(chlngValidation, Formatting.Indented));
var chlngUpdated = await acme.AnswerChallengeAsync(chlng.Url);
if (chlngUpdated.Error != null)
{
_logger.LogError("Submitting Challenge Answer reported an error:");
_logger.LogError(JsonConvert.SerializeObject(chlngUpdated.Error));
}
}
_logger.LogInformation("Refreshing Authorization status");
authz = await acme.GetAuthorizationDetailsAsync(authzUrl);
if (AcmeState.PendingStatus != authz.Status)
{
break;
}
}
}
}
}
Save(_state.AuthorizationsFile, _state.Authorizations);
_logger.LogInformation("Refreshing Order status");
_state.Order = await acme.GetOrderDetailsAsync(_state.Order.OrderUrl, _state.Order);
Save(_state.OrderFile, _state.Order);
}
return(true);
}
private async void submitDnsAnswerButton_Click(object sender, EventArgs e)
{
var url = ResolveCaServerEndpoint();
if (url == null)
{
return;
}
await InvokeWithWaitCursor(async() =>
{
var signer = new PkiJwsTool(256);
signer.Import(_account.JwsSigner);
using (var acme = new AcmeProtocolClient(url, signer: signer,
acct: _account.Details))
{
var dir = await acme.GetDirectoryAsync();
acme.Directory = dir;
await acme.GetNonceAsync();
var dnsChallenge = SelectedAuthorization.Details.Challenges.First(
x => x.Type == Dns01ChallengeValidationDetails.Dns01ChallengeType);
var updatedDnsChallenge = await acme.AnswerChallengeAsync(dnsChallenge.Url);
var details = await acme.GetOrderDetailsAsync(
_lastOrder.Details.OrderUrl ?? _lastOrder.FirstOrderUrl);
_lastOrder.Details = details;
Repo.Saveorder(_lastOrder);
RebindOrderControls();
SetStatus("DNS Challenge Answered; Order refreshed and saved");
await RefreshOrderAuthorizations(acme);
}
Repo.Saveorder(_lastOrder);
RebindOrderControls();
SetStatus("DNS Challenge Answered; Order details and Authorizations refreshed and saved");
await DecodeOrderAuthorizationChallenges(signer);
Repo.Saveorder(_lastOrder);
RebindOrderControls();
SetStatus("DNS Challenge Answered; Order details and Authorizations refreshed, Challenges decoded and saved");
});
}
public async Task AnswerChallenge()
{
using (var http = _server.CreateClient())
{
var dir = await GetDir();
var dnsIds = new[] { "foo.mock.acme2.zyborg.io" };
var signer = new Crypto.JOSE.Impl.RSJwsTool();
signer.Init();
using (var acme = new AcmeProtocolClient(http, dir,
signer: signer))
{
await acme.GetNonceAsync();
var acct = await acme.CreateAccountAsync(new[] { "mailto:[email protected]" });
acme.Account = acct;
var order = await acme.CreateOrderAsync(dnsIds);
Assert.IsNotNull(order?.OrderUrl);
Assert.AreEqual(dnsIds.Length, order.Payload.Authorizations?.Length);
Assert.AreEqual(dnsIds.Length, order.Payload.Identifiers?.Length);
var authzUrl = order.Payload.Authorizations[0];
var authz = await acme.GetAuthorizationDetailsAsync(authzUrl);
Assert.IsNotNull(authz);
Assert.IsFalse(authz.Wildcard ?? false);
Assert.AreEqual(dnsIds[0], authz.Identifier.Value);
foreach (var chlng in authz.Challenges)
{
var chlng2 = await acme.AnswerChallengeAsync(chlng.Url);
Assert.IsNotNull(chlng2);
Assert.AreEqual("valid", chlng2.Status);
}
}
}
}
internal async Task <Challenge> AnswerChallenge(Challenge challenge)
{
// Have to loop to wait for server to stop being pending
challenge = await Retry(() => _client.AnswerChallengeAsync(challenge.Url));
var tries = 1;
while (
challenge.Status == AuthorizationPending ||
challenge.Status == AuthorizationProcessing)
{
await Task.Delay(_settings.Acme.RetryInterval * 1000);
_log.Debug("Refreshing authorization ({tries}/{count})", tries, _settings.Acme.RetryCount);
challenge = await Retry(() => _client.GetChallengeDetailsAsync(challenge.Url));
tries += 1;
if (tries > _settings.Acme.RetryCount)
{
break;
}
}
return(challenge);
}
public async Task FinalizeOrder()
{
using (var http = _server.CreateClient())
{
var dir = await GetDir();
var signer = new Crypto.JOSE.Impl.RSJwsTool();
signer.Init();
using (var acme = new AcmeProtocolClient(http, dir,
signer: signer))
{
await acme.GetNonceAsync();
var acct = await acme.CreateAccountAsync(new[] { "mailto:[email protected]" });
acme.Account = acct;
var dnsIds = new[] {
"foo.mock.acme2.zyborg.io",
"foo-alt-1.mock.acme2.zyborg.io",
"foo-alt-2.mock.acme2.zyborg.io",
"foo-alt-3.mock.acme2.zyborg.io",
};
var order = await acme.CreateOrderAsync(dnsIds);
Assert.IsNotNull(order?.OrderUrl);
Assert.AreEqual(dnsIds.Length, order.Payload.Authorizations?.Length);
Assert.AreEqual(dnsIds.Length, order.Payload.Identifiers?.Length);
var authzUrl = order.Payload.Authorizations[0];
var authz = await acme.GetAuthorizationDetailsAsync(authzUrl);
Assert.IsNotNull(authz);
Assert.IsFalse(authz.Wildcard ?? false);
Assert.AreEqual(dnsIds[0], authz.Identifier.Value);
foreach (var chlng in authz.Challenges)
{
var chlng2 = await acme.AnswerChallengeAsync(chlng.Url);
Assert.IsNotNull(chlng2);
Assert.AreEqual("valid", chlng2.Status);
}
var kpr = PkiKeyPair.GenerateRsaKeyPair(2048);
var csr = new PkiCertificateSigningRequest($"cn={dnsIds[0]}", kpr,
PkiHashAlgorithm.Sha256);
csr.CertificateExtensions.Add(
PkiCertificateExtension.CreateDnsSubjectAlternativeNames(dnsIds.Skip(1)));
var csrDer = csr.ExportSigningRequest(PkiEncodingFormat.Der);
var finalizedOrder = await acme.FinalizeOrderAsync(order.Payload.Finalize, csrDer);
Assert.AreEqual("valid", finalizedOrder.Payload.Status);
Assert.IsNotNull(finalizedOrder.Payload.Certificate);
var getResp = await acme.GetAsync(finalizedOrder.Payload.Certificate);
getResp.EnsureSuccessStatusCode();
using (var fs = new FileStream(
@"C:\local\prj\bek\ACMESharp\ACMESharpCore\test\ACMESharp.MockServer.UnitTests\finalize-cert.pem",
FileMode.Create))
{
await getResp.Content.CopyToAsync(fs);
}
}
}
}
internal Challenge AnswerChallenge(Challenge challenge)
{
return(Retry(() => _client.AnswerChallengeAsync(challenge.Url).Result));
}
public async Task <StatusMessage> SubmitChallenge(ILog log, string challengeType, AuthorizationChallengeItem attemptedChallenge)
{
if (attemptedChallenge == null)
{
return(new StatusMessage
{
IsOK = false,
Message = "Challenge could not be submitted. No matching attempted challenge."
});
}
if (!attemptedChallenge.IsValidated)
{
// IChallengeContext challenge = (IChallengeContext)attemptedChallenge.ChallengeData;
try
{
var result = await _client.AnswerChallengeAsync(attemptedChallenge.ResourceUri);
var attempts = 10;
while (attempts > 0 && result.Status == "pending" || result.Status == "processing")
{
result = await _client.GetChallengeDetailsAsync(attemptedChallenge.ResourceUri);
}
if (result.Status == "valid")
{
return(new StatusMessage
{
IsOK = true,
Message = "Submitted"
});
}
else
{
return(new StatusMessage
{
IsOK = false,
Message = result.Error.ToString()
});
}
}
catch (ACMESharp.Protocol.AcmeProtocolException exp)
{
var msg = $"Submit Challenge failed: {exp.ProblemDetail}";
log.Error(msg);
return(new StatusMessage
{
IsOK = false,
Message = msg
});
}
}
else
{
return(new StatusMessage
{
IsOK = true,
Message = "Validated"
});
}
}
public async Task <IActionResult> Post([FromBody] DomainRequest request)
{
if (!IsValidDomain(request.Domain))
{
return(BadRequest(new DomainResponse {
Error = "Invalid domain"
}));
}
var domain = string.Join(".", request.Domain.Split(".").TakeLast(2));
var subDomain = string.Join(".", request.Domain.Split(".").SkipLast(2));
var credentials = new AzureCredentialsFactory()
.FromServicePrincipal(
_configuration["Azure:ClientId"],
_configuration["Azure:ClientSecret"],
_configuration["Azure:TenantId"],
AzureEnvironment.AzureGlobalCloud
);
var azure = Azure
.Configure()
.WithRetryPolicy(new RetryPolicy(new TransientErrorIgnoreStrategy(), 0))
.Authenticate(credentials)
.WithSubscription(_configuration["Azure:SubscriptionId"]);
var webApp = await azure.AppServices.WebApps.GetByIdAsync(
_configuration["Azure:AppId"]);
try
{
webApp.Update()
.DefineHostnameBinding()
.WithThirdPartyDomain(domain)
.WithSubDomain(subDomain)
.WithDnsRecordType(CustomHostNameDnsRecordType.CName)
.Attach()
.Apply();
}
catch (Exception e)
{
return(BadRequest(new DomainResponse {
Error = "Unable to validate domain ownership"
}));
}
_ = Task.Run(async() =>
{
using var airtableBase = new AirtableBase(_configuration["Airtable:Key"], _configuration["Airtable:Base"]);
try
{
HttpClient httpClient = new HttpClient {
BaseAddress = new Uri(_configuration["Acme:Endpoint"])
};
AcmeProtocolClient acme = new AcmeProtocolClient(httpClient, usePostAsGet: true);
var acmeDir = await acme.GetDirectoryAsync();
acme.Directory = acmeDir;
await acme.GetNonceAsync();
var account = await acme.CreateAccountAsync(new[] { "mailto:" + _configuration["Acme:Email"] }, true);
acme.Account = account;
var order = await acme.CreateOrderAsync(new[] { request.Domain });
if (order.Payload.Status == "invalid")
{
return;
}
var authorizationUrl = order.Payload.Authorizations.FirstOrDefault();
if (string.IsNullOrEmpty(authorizationUrl))
{
return;
}
var authorization = await acme.GetAuthorizationDetailsAsync(authorizationUrl);
foreach (var challenge in authorization.Challenges.Where(x => x.Type == "http-01").ToList())
{
var challengeValidationDetails = (Http01ChallengeValidationDetails)
AuthorizationDecoder.DecodeChallengeValidation(authorization, challenge.Type, acme.Signer);
var path = challengeValidationDetails.HttpResourcePath;
var token = path.Split("/", StringSplitOptions.RemoveEmptyEntries).Last();
var value = challengeValidationDetails.HttpResourceValue;
var contentType = challengeValidationDetails.HttpResourceContentType;
await airtableBase.CreateRecord("Acme", new Fields
{
FieldsCollection = new Dictionary <string, object>
{
["Token"] = token,
["Value"] = value,
["ContentType"] = contentType
}
});
await Task.Delay(10 * 1000);
var challengeUpdated = await acme.AnswerChallengeAsync(challenge.Url);
}
//Wait for challenge to be resolved
var waitUntil = DateTime.Now.AddSeconds(300);
Authorization authorizationUpdated;
do
{
await Task.Delay(10 * 1000);
authorizationUpdated = await acme.GetAuthorizationDetailsAsync(authorizationUrl);
} while (authorizationUpdated.Status != "valid" && DateTime.Now < waitUntil);
if (authorizationUpdated.Status != "valid")
{
return;
}
//Generate certificate private key and CSR (Certificate signing request)
var keyPair = PkiKeyPair.GenerateEcdsaKeyPair(256);
var csr = new PkiCertificateSigningRequest($"CN={request.Domain}", keyPair, PkiHashAlgorithm.Sha256);
var certCsr = csr.ExportSigningRequest(PkiEncodingFormat.Der);
order = await acme.FinalizeOrderAsync(order.Payload.Finalize, certCsr);
if (order.Payload.Status != "valid")
{
return;
}
if (string.IsNullOrEmpty(order.Payload.Certificate))
{
//Wait for certificate
var waitUntil2 = DateTime.Now.AddSeconds(300);
while (DateTime.Now < waitUntil2)
{
await Task.Delay(10 * 1000);
order = await acme.GetOrderDetailsAsync(order.OrderUrl, existing: order);
if (!string.IsNullOrEmpty(order.Payload.Certificate))
{
break;
}
}
}
if (string.IsNullOrEmpty(order.Payload.Certificate))
{
return;
}
var certResp = await acme.GetAsync(order.Payload.Certificate);
if (!certResp.IsSuccessStatusCode)
{
return;
}
var certByteArray = await certResp.Content.ReadAsByteArrayAsync();
//Export PFX file
var pfxPassword = _configuration["Acme:PfxPassword"];
var privateKey = keyPair.PrivateKey;
using var cert = new X509Certificate2(certByteArray);
X509Chain chain = new X509Chain();
chain.Build(cert);
List <PkiCertificate> chainList = new List <PkiCertificate>();
foreach (var e in chain.ChainElements)
{
chainList.Add(PkiCertificate.From(e.Certificate));
}
var pfx = chainList[0].Export(PkiArchiveFormat.Pkcs12,
chain: chainList.Skip(1),
privateKey: privateKey,
password: pfxPassword?.ToCharArray());
webApp.Update()
.DefineSslBinding()
.ForHostname(request.Domain)
.WithPfxByteArrayToUpload(pfx, pfxPassword)
.WithSniBasedSsl()
.Attach()
.Apply();
}
catch (Exception e)
{
await airtableBase.CreateRecord("Logs", new Fields
{
FieldsCollection = new Dictionary <string, object>
{
["Hostname"] = request.Domain,
["Event"] = "exception-thrown",
["Data"] = JsonConvert.SerializeObject(e)
}
});
}
});
return(Ok(new DomainResponse {
IsSuccessful = true
}));
}