/// <summary>
/// if not already validate, ask ACME CA to check we have answered the nominated challenges correctly
/// </summary>
/// <param name="log"> </param>
/// <param name="challengeType"> </param>
/// <param name="attemptedChallenge"> </param>
/// <returns> </returns>
public async Task <StatusMessage> SubmitChallenge(ILog log, string challengeType, AuthorizationChallengeItem attemptedChallenge)
{
if (!attemptedChallenge.IsValidated)
{
IChallengeContext challenge = (IChallengeContext)attemptedChallenge.ChallengeData;
try
{
Challenge result = await challenge.Validate();
int attempts = 10;
while (attempts > 0 && result.Status == ChallengeStatus.Pending || result.Status == ChallengeStatus.Processing)
{
result = await challenge.Resource();
}
if (result.Status == ChallengeStatus.Valid)
{
return(new StatusMessage
{
IsOK = true,
Message = "Submitted"
});
}
else
{
var challengeError = await challenge.Resource();
return(new StatusMessage
{
IsOK = false,
Message = challengeError.Error?.Detail
});
}
}
catch (AcmeRequestException exp)
{
var msg = $"Submit Challenge failed: {exp.Error?.Detail}";
log.Error(msg);
return(new StatusMessage
{
IsOK = false,
Message = msg
});
}
}
else
{
return(new StatusMessage
{
IsOK = true,
Message = "Validated"
});
}
}
public async Task <StatusMessage> SubmitChallenge(string domainIdentifierId, string challengeType, AuthorizationChallengeItem attemptedChallenge)
{
// if not already validate, ask ACME server to validate we have answered the required
// challenge correctly
if (!attemptedChallenge.IsValidated)
{
IChallengeContext challenge = (IChallengeContext)attemptedChallenge.ChallengeData;
try
{
var result = await challenge.Validate();
if (result.Status == ChallengeStatus.Valid || result.Status == ChallengeStatus.Pending)
{
return(new StatusMessage
{
IsOK = true,
Message = "Submitted"
});
}
else
{
var challengeError = await challenge.Resource();
return(new StatusMessage
{
IsOK = false,
Message = challengeError.ToString()
});
}
}
catch (Exception exp)
{
LogAction("SubmitChallenge failed. ", exp.Message);
var challengeError = await challenge.Resource();
return(new StatusMessage
{
IsOK = false,
Message = challengeError.ToString()
});
}
}
else
{
return(new StatusMessage
{
IsOK = true,
Message = "Validated"
});
}
}
/// <summary>
/// Validates a DNS challenge. Similar to HTTP Validation, but different because of DNSChallenge value which is signed by account key
/// </summary>
/// <param name="dnsChallenge"></param>
/// <returns></returns>
private async Task <bool> ValidateDNSChallenge(String domain, IChallengeContext dnsChallenge, IDNSChallengeValidator dnsChallengeValidator)
{
if (dnsChallenge == null)
{
throw new Exception("DNS Validation mode setup, but server returned no DNS challenge.");
}
// We get the resource fresh
var dnsChallengeStatus = await dnsChallenge.Resource();
// If it's invalid, we stop right away. Should not happen, but anyway...
if (dnsChallengeStatus.Status == ChallengeStatus.Invalid)
{
throw new Exception("DNS challenge has an invalid status");
}
// Let's prepare for ACME-DNS validation
var dnsValue = _acme.AccountKey.DnsTxt(dnsChallenge.Token);
var dnsKey = $"_acme-challenge.{domain}".Replace("*.", "");
if (!dnsChallengeValidator.PrepareChallengeForValidation(dnsKey, dnsValue))
{
return(false);
}
// We sleep 5 seconds gefore first check, in order to leave the time to DNS to propagate
System.Threading.Thread.Sleep(5000);
// Now let's ping the ACME service to validate the challenge token
Challenge challengeRes = await dnsChallenge.Validate();
// We need to loop, because ACME service might need some time to validate the challenge token
int retry = 0;
while (((challengeRes.Status == ChallengeStatus.Pending) || (challengeRes.Status == ChallengeStatus.Processing)) && (retry < 10))
{
// We sleep 2 seconds between each request, to leave time to ACME service to refresh
System.Threading.Thread.Sleep(2000);
// We refresh the challenge object from ACME service
challengeRes = await dnsChallenge.Resource();
retry++;
}
// If challenge is Invalid, Pending or Processing, something went wrong...
if (challengeRes.Status != ChallengeStatus.Valid)
{
return(false);
}
return(true);
}
/// <summary>
/// 执行HTTP-01验证
/// </summary>
/// <param name="authz">授权上下文</param>
/// <param name="challengeTokenPath">http-01验证令牌文件存放路径</param>
/// <returns></returns>
public static async Task <ChallengeStatus?> HttpChallengeValidateAsync(IAuthorizationContext authz, string challengeTokenPath = "")
{
IChallengeContext httpChallenge = await authz.Http();
var keyAuthz = httpChallenge.KeyAuthz;
File.WriteAllText(Path.Combine(challengeTokenPath, httpChallenge.Token), keyAuthz);
/*
* 向ACME服务器发送申请/请求，以验证域名所有权
* 注意，此处需要延迟轮询等等，具体可以参考GITHUB的几个issues
* 需要延迟轮询：https://github.com/fszlin/certes/issues/194
* 如何获取当前验证状态：https://github.com/fszlin/certes/issues/89
*/
Challenge challengeResult = await httpChallenge.Validate();
//等待服务器验证结果，每隔3秒轮询一次，最多轮询10次
var attempts = 10;
while (attempts > 0 && (challengeResult.Status == ChallengeStatus.Pending || challengeResult.Status == ChallengeStatus.Processing))
{
await Task.Delay(3000);
challengeResult = await httpChallenge.Resource();
attempts--;
}
return(challengeResult.Status);
}
public async Task ValidateDnsAuthorizationAsync()
{
var challengeResult = await challengeContext.Validate();
int numberOfRetries = 0;
while (challengeResult.Status.HasValue && challengeResult.Status.Value == Certes.Acme.Resource.ChallengeStatus.Pending &&
numberOfRetries <= maxNumberOfRetries)
{
log.LogInformation($"Validation is pending. Will retry in 1 second. Number of retries - {numberOfRetries}");
await Task.Delay(1 * 1000);
challengeResult = await challengeContext.Resource();
numberOfRetries += 1;
}
if (numberOfRetries >= maxNumberOfRetries)
{
throw new ChallengeValidationFailedException();
}
if (!challengeResult.Status.HasValue || challengeResult.Status.Value != Certes.Acme.Resource.ChallengeStatus.Valid)
{
log.LogError("Unable to validate challenge - {0} - {1}", challengeResult.Error.Detail, string.Join('~', challengeResult.Error.Subproblems.Select(x => x.Detail)));
throw new ChallengeValidationFailedException();
}
}
/// <summary>
/// Small method that validates one challenge using the specified validator
/// </summary>
/// <param name="httpChallenge"></param>
/// <param name="challengeValidator"></param>
/// <returns>true if validated, false otherwise</returns>
private async Task <bool> ValidateChallenge(IChallengeContext httpChallenge, IHTTPChallengeValidator challengeValidator)
{
// We get the resource fresh
var httpChallengeStatus = await httpChallenge.Resource();
// If it's invalid, we stop right away. Should not happen, but anyway...
if (httpChallengeStatus.Status == ChallengeStatus.Invalid)
{
throw new Exception("HTTP challenge has an invalid status");
}
// Else we start the challenge validation
if (!challengeValidator.PrepareChallengeForValidation(httpChallenge.Token, httpChallenge.KeyAuthz))
{
return(false);
}
// Now let's ping the ACME service to validate the challenge token
Challenge challengeRes = await httpChallenge.Validate();
// We need to loop, because ACME service might need some time to validate the challenge token
int retry = 0;
while (((challengeRes.Status == ChallengeStatus.Pending) || (challengeRes.Status == ChallengeStatus.Processing)) && (retry < 10))
{
// We sleep 2 seconds between each request, to leave time to ACME service to refresh
System.Threading.Thread.Sleep(2000);
// We refresh the challenge object from ACME service
challengeRes = await httpChallenge.Resource();
retry++;
}
// Finally we cleanup everything that was needed for validation
challengeValidator.CleanupChallengeAfterValidation(httpChallenge.Token);
// If challenge is Invalid, Pending or Processing, something went wrong...
if (challengeRes.Status != ChallengeStatus.Valid)
{
return(false);
}
return(true);
}
public static async Task WaitForCompletion(this IChallengeContext challengeContext, TimeSpan pollInterval, ILogger logger = null)
{
// Get the challenges ressource to check if it's valid
var challenge = await challengeContext.Resource();
while (!challenge.HasFinished())
{
// If nor finished processing, poll every second
challenge = await challengeContext.Resource();
await Task.Delay(pollInterval);
}
logger?.LogDebug("Http challenge finished with status {status}", challenge.Status?.ToString() ?? "[null]");
if (challenge.Status == ChallengeStatus.Invalid)
{
// Throw if invalid
new AcmeException(challenge.Error?.Detail ?? "ACME http challenge not successful.");
}
}
async Task <IChalageStatus> ValidateChalage(IChallengeContext challengeCtx)
{
// Now let's ping the ACME service to validate the challenge token
try {
Challenge challenge = await challengeCtx.Validate( );
if (challenge.Status == ChallengeStatus.Invalid)
{
_logger.Write("Error occured while validating acme challenge to {0} :: error==>{1}", domain.ZoneName, challenge.Error.Detail);
return(new ChalageStatus {
status = false,
errorDescription = challenge.Error.Detail
});
}
// We need to loop, because ACME service might need some time to validate the challenge token
int retry = 0;
while (((challenge.Status == ChallengeStatus.Pending) ||
(challenge.Status == ChallengeStatus.Processing)) && (retry < 30))
{
// We sleep 2 seconds between each request, to leave time to ACME service to refresh
Thread.Sleep(2000);
// We refresh the challenge object from ACME service
challenge = await challengeCtx.Resource( );
retry++;
}
if (challenge.Status == ChallengeStatus.Invalid)
{
_logger.Write("Error occured while validating acme challenge to {0} :: error==>{1}", domain.ZoneName, challenge.Error.Detail);
return(new ChalageStatus {
status = false,
errorDescription = challenge.Error.Detail
});
}
return(new ChalageStatus {
status = true
});
} catch (Exception e) {
_logger.Write("Error occured while validating acme challenge to {0} :: error==>{1}", domain.ZoneName, e.Message);
_logger.Write(e.StackTrace);
return(new ChalageStatus {
status = false,
errorDescription = e.Message
});
}
}
public static void GetFirstCert(bool staging = true)
{
ContextAccountBundle bundle;
if (staging)
{
bundle = GetStagingParameters();
}
else
{
bundle = GetNonStagingParameters();
}
var account = bundle.Account;
var ctx = bundle.Ctx;
IOrderListContext orders = account.Orders().Result;
List <IOrderContext> orderContexts = new List <IOrderContext>(orders.Orders().Result);
IOrderContext currentOrder = null;
if (orderContexts.Count == 0)
{
currentOrder = ctx.NewOrder(new[] { "jcf-ai.com" }).Result;
}
else
{
foreach (IOrderContext orderCtx in orderContexts)
{
if (orderCtx.Resource().Result.Status != OrderStatus.Valid)
{
currentOrder = orderCtx;
break;
}
}
if (currentOrder == null)
{
currentOrder = ctx.NewOrder(new[] { "jcf-ai.com" }).Result;
}
}
Order order = currentOrder.Resource().Result;
var authorizationList = currentOrder.Authorizations().Result;
IAuthorizationContext currentAuthContext;
IEnumerator <IAuthorizationContext> enumerator = authorizationList.GetEnumerator();
while (enumerator.Current == null)
{
enumerator.MoveNext();
}
currentAuthContext = enumerator.Current;
Authorization authResource = currentAuthContext.Resource().Result;
IChallengeContext httpContext = currentAuthContext.Http().Result;
if (httpContext.Resource().Result.Status != ChallengeStatus.Valid)
{
if (!System.IO.Directory.Exists("tokens"))
{
System.IO.Directory.CreateDirectory("tokens");
}
StreamWriter writer = new StreamWriter("tokens/" + httpContext.Token);
writer.Write(httpContext.KeyAuthz);
writer.Close();
Challenge httpChallenge = httpContext.Validate().Result;
}
//Everything should be good to go on the whole validate everything front.
IKey privateKey = KeyFactory.NewKey(KeyAlgorithm.ES384);
var cert = currentOrder.Generate(
new CsrInfo()
{
CountryName = "US",
State = "Washington",
Locality = "Tacoma",
CommonName = "jcf-ai.com"
}, privateKey).Result;
byte[] pfx = cert.ToPfx(privateKey).Build("jcf-ai.com", "pass");
FileStream pfxOutStream = new FileStream("jcf-ai.pfx", FileMode.Create, FileAccess.Write);
pfxOutStream.Write(pfx, 0, pfx.Length);
pfxOutStream.Close();
ProcessStartInfo psi = new ProcessStartInfo("powershell", "-Command ./bindcert.ps1 jcf-ai.pfx pass");
psi.CreateNoWindow = true;
Process.Start(psi);
}
/// <summary>
/// if not already validate, ask ACME CA to check we have answered the nominated challenges correctly
/// </summary>
/// <param name="log"> </param>
/// <param name="challengeType"> </param>
/// <param name="attemptedChallenge"> </param>
/// <returns> </returns>
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)
{
try
{
await _acme.HttpClient.ConsumeNonce();
}
catch (Exception)
{
return(new StatusMessage
{
IsOK = false,
Message = "Failed to resume communication with Certificate Authority API. Try again later."
});
}
IChallengeContext challenge = (IChallengeContext)attemptedChallenge.ChallengeData;
try
{
var result = await challenge.Validate();
var attempts = 10;
while (attempts > 0 && result.Status == ChallengeStatus.Pending || result.Status == ChallengeStatus.Processing)
{
result = await challenge.Resource();
await Task.Delay(500);
}
if (result.Status == ChallengeStatus.Valid)
{
return(new StatusMessage
{
IsOK = true,
Message = "Submitted"
});
}
else
{
var challengeError = await challenge.Resource();
return(new StatusMessage
{
IsOK = false,
Message = challengeError.Error?.Detail
});
}
}
catch (AcmeRequestException exp)
{
var msg = $"Submit Challenge failed: {exp.Error?.Detail}";
log.Error(msg);
return(new StatusMessage
{
IsOK = false,
Message = msg
});
}
}
else
{
return(new StatusMessage
{
IsOK = true,
Message = "Validated"
});
}
}
/// <exception cref="LetsEncryptMikroTikException"/>
private async Task ChallengeAsync(IChallenge challenge, IChallengeContext httpChallenge)
{
// Запустить asp net.
Log.Information("Запускаем веб-сервер.");
challenge.Start();
string mtNatId = MtAddDstNatRule(dstPort: challenge.PublicPort, toPorts: challenge.ListenPort);
string mtFilterId = MtAllowPortFilter(dstPort: challenge.ListenPort, publicPort: challenge.PublicPort);
string mtMangleId = MtAllowMangleRule(dstPort: challenge.ListenPort);
// Правило в микротике начинает работать не мгновенно.
await Task.Delay(2000).ConfigureAwait(false);
//Challenge status;
try
{
// Ask the ACME server to validate our domain ownership.
Log.Information("Информируем Let's Encrypt что мы готовы пройти валидацию.");
Challenge?status = await httpChallenge.Validate().ConfigureAwait(false);
bool waitWithSem = true;
while (status.Status == ChallengeStatus.Pending)
{
if (waitWithSem)
{
Log.Information("Ожидаем 20 сек. входящий HTTP запрос.");
Task t = await Task.WhenAny(Task.Delay(20_000), challenge.Completion).ConfigureAwait(false);
if (t == challenge.Completion)
{
waitWithSem = false;
Log.Information("Успешно выполнили входящий запрос. Ждём 15 сек. перед запросом сертификата.");
await Task.Delay(15_000).ConfigureAwait(false);
}
else
// Таймаут.
{
waitWithSem = false;
Log.Information("Запрос ещё не поступил. Дополнительно ожидаем ещё 5 сек.");
await Task.Delay(5000).ConfigureAwait(false);
}
}
else
{
Log.Information("Заказ всё ещё в статусе Pending. Делаем дополнительную паузу на 5 сек.");
await Task.Delay(5_000).ConfigureAwait(false);
}
Log.Information("Запрашиваем статус нашего заказа.");
status = await httpChallenge.Resource().ConfigureAwait(false);
}
if (status.Status == ChallengeStatus.Valid)
{
Log.Information("Статус заказа: Valid. Загружаем сертификат.");
}
else
{
Log.Error($"Статус заказа: {status.Status}");
throw new LetsEncryptMikroTikException($"Статус заказа: {status.Status}. Ошибка: {status.Error.Detail}");
}
}
finally
{
// Возвращаем NAT
ClosePort(mtFilterId);
RemoveNatRule(mtNatId);
RemoveMangleRule(mtMangleId);
}
}
