private static readonly RNGCryptoServiceProvider s_randomGenerator = new RNGCryptoServiceProvider(); // thread-safe
public async Task Renew(RenewalParameters renewalParams)
{
if (renewalParams == null)
{
throw new ArgumentNullException(nameof(renewalParams));
}
Trace.TraceInformation("Generating SSL certificate with parameters: {0}", renewalParams);
Trace.TraceInformation("Generating secure PFX password for '{0}'...", renewalParams.WebApp);
var pfxPassData = new byte[32];
s_randomGenerator.GetBytes(pfxPassData);
Trace.TraceInformation("Adding SSL cert for '{0}'...", renewalParams.WebApp);
var manager = CertificateManager.CreateKuduWebAppCertificateManager(
new AzureWebAppEnvironment(
renewalParams.TenantId,
renewalParams.SubscriptionId,
renewalParams.ClientId,
renewalParams.ClientSecret,
renewalParams.ResourceGroup,
renewalParams.WebApp,
renewalParams.ServicePlanResourceGroup,
renewalParams.SiteSlotName)
{
AzureWebSitesDefaultDomainName = renewalParams.AzureDefaultWebsiteDomainName ?? DefaultWebsiteDomainName,
AuthenticationEndpoint = renewalParams.AuthenticationUri ?? new Uri(DefaultAuthenticationUri),
ManagementEndpoint = renewalParams.AzureManagementEndpoint ?? new Uri(DefaultManagementEndpoint),
TokenAudience = renewalParams.AzureTokenAudience ?? new Uri(DefaultAzureTokenAudienceService)
},
new AcmeConfig
{
Host = renewalParams.Hosts[0],
AlternateNames = renewalParams.Hosts.Skip(1).ToList(),
RegistrationEmail = renewalParams.Email,
RSAKeyLength = renewalParams.RsaKeyLength,
PFXPassword = Convert.ToBase64String(pfxPassData),
BaseUri = (renewalParams.AcmeBaseUri ?? new Uri(DefaultAcmeBaseUri)).ToString()
},
new CertificateServiceSettings {
UseIPBasedSSL = renewalParams.UseIpBasedSsl
},
new AuthProviderConfig());
if (renewalParams.RenewXNumberOfDaysBeforeExpiration > 0)
{
await manager.RenewCertificate(false, renewalParams.RenewXNumberOfDaysBeforeExpiration);
}
else
{
await manager.AddCertificate();
}
Trace.TraceInformation("SSL cert added successfully to '{0}'", renewalParams.WebApp);
}
private static async Task RenewCore(RenewalParameters renewalParams)
{
Trace.TraceInformation("Generating SSL certificate with parameters: {0}", renewalParams);
var acmeConfig = GetAcmeConfig(renewalParams);
var webAppEnvironment = GetWebAppEnvironment(renewalParams);
var certificateServiceSettings = new CertificateServiceSettings {
UseIPBasedSSL = renewalParams.UseIpBasedSsl
};
var azureDnsEnvironment = GetAzureDnsEnvironment(renewalParams);
if (azureDnsEnvironment != null)
{
throw new ConfigurationErrorsException("Azure DNS challenge currently not supported");
}
var manager = CertificateManager.CreateKuduWebAppCertificateManager(webAppEnvironment, acmeConfig, certificateServiceSettings, new AuthProviderConfig());
Trace.TraceInformation("Adding SSL cert for '{0}'...", GetWebAppFullName(renewalParams));
bool addNewCert = true;
if (renewalParams.RenewXNumberOfDaysBeforeExpiration > 0)
{
var staging = acmeConfig.BaseUri.Contains("staging", StringComparison.OrdinalIgnoreCase);
var letsEncryptHostNames = await CertificateHelper.GetLetsEncryptHostNames(webAppEnvironment, staging);
Trace.TraceInformation("Let's Encrypt host names (staging: {0}): {1}", staging, String.Join(", ", letsEncryptHostNames));
ICollection <string> missingHostNames = acmeConfig.Hostnames.Except(letsEncryptHostNames, StringComparer.OrdinalIgnoreCase).ToArray();
if (missingHostNames.Count > 0)
{
Trace.TraceInformation(
"Detected host name(s) with no associated Let's Encrypt certificates, will add a new certificate: {0}",
String.Join(", ", missingHostNames));
}
else
{
Trace.TraceInformation("All host names associated with Let's Encrypt certificates, will perform cert renewal");
addNewCert = false;
}
}
if (addNewCert)
{
await manager.AddCertificate();
}
else
{
await manager.RenewCertificate(false, renewalParams.RenewXNumberOfDaysBeforeExpiration);
}
Trace.TraceInformation("Let's Encrypt SSL certs & bindings renewed for '{0}'", renewalParams.WebApp);
}
public async Task <IHttpActionResult> GenerateAndInstall(HttpKuduInstallModel model, [FromUri(Name = "api-version")] string apiversion = null)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var mgr = CertificateManager.CreateKuduWebAppCertificateManager(model.AzureEnvironment, model.AcmeConfig, model.CertificateSettings, model.AuthorizationChallengeProviderConfig);
return(Ok(await mgr.AddCertificate()));
}
private static async Task RenewCore(RenewalParameters renewalParams)
{
Trace.TraceInformation("Adding / renewing SSL cert for '{0}' with parameters: {1}", GetWebAppFullName(renewalParams), renewalParams);
var acmeConfig = GetAcmeConfig(renewalParams, CertificateHelper.GenerateSecurePassword());
var webAppEnvironment = GetWebAppEnvironment(renewalParams);
var certificateServiceSettings = new CertificateServiceSettings {
UseIPBasedSSL = renewalParams.UseIpBasedSsl
};
var azureDnsEnvironment = GetAzureDnsEnvironment(renewalParams);
bool staging = acmeConfig.BaseUri.Contains("staging", StringComparison.OrdinalIgnoreCase);
if (azureDnsEnvironment != null)
{
await GetDnsRenewalService(renewalParams, azureDnsEnvironment, webAppEnvironment).Run(
new AcmeDnsRequest
{
AcmeEnvironment = staging ? (AcmeEnvironment) new LetsEncryptStagingV2() : new LetsEncryptV2(),
RegistrationEmail = acmeConfig.RegistrationEmail,
Host = acmeConfig.Host,
PFXPassword = CertificateHelper.GenerateSecurePassword(),
CsrInfo = new CsrInfo(),
}, renewalParams.RenewXNumberOfDaysBeforeExpiration).ConfigureAwait(false);
}
else
{
var manager = CertificateManager.CreateKuduWebAppCertificateManager(webAppEnvironment, acmeConfig, certificateServiceSettings, new AuthProviderConfig());
var addNewCert = await CheckCertAddition(renewalParams, webAppEnvironment, acmeConfig, staging).ConfigureAwait(false);
if (addNewCert)
{
await manager.AddCertificate().ConfigureAwait(false);
}
else
{
await manager.RenewCertificate(false, renewalParams.RenewXNumberOfDaysBeforeExpiration).ConfigureAwait(false);
}
}
Trace.TraceInformation("Let's Encrypt SSL certs & bindings renewed for '{0}'", renewalParams.WebApp);
}
private async Task <int> RenewCore(RenewalParameters renewalParams)
{
Trace.TraceInformation("Generating SSL certificate with parameters: {0}", renewalParams);
Trace.TraceInformation("Generating secure PFX password for '{0}'...", renewalParams.WebApp);
var pfxPassData = new byte[32];
s_randomGenerator.GetBytes(pfxPassData);
Trace.TraceInformation(
"Adding SSL cert for '{0}{1}'...",
renewalParams.WebApp,
renewalParams.GroupName == null ? String.Empty : $"[{renewalParams.GroupName}]");
azureEnvironment = new AzureWebAppEnvironment(
renewalParams.TenantId,
renewalParams.SubscriptionId,
renewalParams.ClientId,
renewalParams.ClientSecret,
renewalParams.ResourceGroup,
renewalParams.WebApp,
renewalParams.ServicePlanResourceGroup,
renewalParams.SiteSlotName)
{
WebRootPath = renewalParams.WebRootPath,
AzureWebSitesDefaultDomainName = renewalParams.AzureDefaultWebsiteDomainName ?? DefaultWebsiteDomainName,
AuthenticationEndpoint = renewalParams.AuthenticationUri ?? new Uri(DefaultAuthenticationUri),
ManagementEndpoint = renewalParams.AzureManagementEndpoint ?? new Uri(DefaultManagementEndpoint),
TokenAudience = renewalParams.AzureTokenAudience ?? new Uri(DefaultAzureTokenAudienceService),
};
var manager = CertificateManager.CreateKuduWebAppCertificateManager(
azureEnvironment,
new AcmeConfig
{
Host = renewalParams.Hosts[0],
AlternateNames = renewalParams.Hosts.Skip(1).ToList(),
RegistrationEmail = renewalParams.Email,
RSAKeyLength = renewalParams.RsaKeyLength,
PFXPassword = Convert.ToBase64String(pfxPassData),
BaseUri = (renewalParams.AcmeBaseUri ?? new Uri(DefaultAcmeBaseUri)).ToString(),
},
new CertificateServiceSettings {
UseIPBasedSSL = renewalParams.UseIpBasedSsl
},
new AuthProviderConfig());
var certificatesRenewed = 0;
using (webSiteClient = await ArmHelper.GetWebSiteManagementClient(azureEnvironment))
{
var isWebAppRunning = IsWebAppRunning();
if (!isWebAppRunning && !await StartWebApp())
{
string errorMessage = string.Format("Could not start WebApp '{0}' to renew certificate", renewalParams.WebApp);
Trace.TraceError(errorMessage);
throw new WebAppException(renewalParams.WebApp, "Could not start WebApp");
}
if (await HasCertificate())
{
var result = await manager.RenewCertificate(false, renewalParams.RenewXNumberOfDaysBeforeExpiration);
certificatesRenewed = result.Count;
}
else
{
var result = await manager.AddCertificate();
if (result != null)
{
certificatesRenewed = 1;
}
}
if (!isWebAppRunning && !await StopWebApp())
{
Trace.TraceWarning("Could not stop WebApp '{0}' after renewing certificate", renewalParams.WebApp);
}
}
Trace.TraceInformation("SSL cert added successfully to '{0}'", renewalParams.WebApp);
return(certificatesRenewed);
}
