public static async Task <IReadOnlyList <string> > GetLetsEncryptHostNames(IAzureWebAppEnvironment webAppEnvironment, bool staging)
{
Site site;
using (var client = await ArmHelper.GetWebSiteManagementClient(webAppEnvironment))
{
Trace.TraceInformation(
"Getting Web App '{0}' (slot '{1}') from resource group '{2}'",
webAppEnvironment.WebAppName,
webAppEnvironment.SiteSlotName,
webAppEnvironment.ResourceGroupName);
site = client.WebApps.GetSiteOrSlot(webAppEnvironment.ResourceGroupName, webAppEnvironment.WebAppName, webAppEnvironment.SiteSlotName);
}
using (var httpClient = await ArmHelper.GetHttpClient(webAppEnvironment))
{
var certRequestUri = $"/subscriptions/{webAppEnvironment.SubscriptionId}/providers/Microsoft.Web/certificates?api-version=2016-03-01";
Trace.TraceInformation("GET {0}", certRequestUri);
var response = await ArmHelper.ExponentialBackoff().ExecuteAsync(async() => await httpClient.GetAsync(certRequestUri));
Trace.TraceInformation("Reading ARM certificate query response");
var body = await response.EnsureSuccessStatusCode().Content.ReadAsStringAsync();
var letsEncryptCerts = ExtractCertificates(body).Where(s => s.Issuer.Contains(staging ? "Fake LE" : "Let's Encrypt"));
var leCertThumbprints = new HashSet <string>(letsEncryptCerts.Select(c => c.Thumbprint));
return(site.HostNameSslStates.Where(ssl => leCertThumbprints.Contains(ssl.Thumbprint)).Select(ssl => ssl.Name).ToArray());
}
}
public void Install(ICertificateInstallModel model)
{
var cert = model.CertificateInfo;
using (var webSiteClient = ArmHelper.GetWebSiteManagementClient(azureEnvironment))
{
var s = webSiteClient.WebApps.GetSiteOrSlot(azureEnvironment.ResourceGroupName, azureEnvironment.WebAppName, azureEnvironment.SiteSlotName);
Trace.TraceInformation(String.Format("Installing certificate {0} on azure with server farm id {1}", cert.Name, s.ServerFarmId));
var newCert = new Certificate()
{
PfxBlob = cert.PfxCertificate,
Password = cert.Password,
Location = s.Location,
ServerFarmId = s.ServerFarmId,
Name = model.Host + "-" + cert.Certificate.Thumbprint
};
//BUG https://github.com/sjkp/letsencrypt-siteextension/issues/99
//using this will not install the certificate with the correct webSpace property set,
//and the app service will be unable to find the certificate if the app service plan has been moved between resource groups.
//webSiteClient.Certificates.CreateOrUpdate(azureEnvironment.ServicePlanResourceGroupName, cert.Certificate.Subject.Replace("CN=", ""), newCert);
var client = ArmHelper.GetHttpClient(azureEnvironment);
var body = JsonConvert.SerializeObject(newCert, JsonHelper.DefaultSerializationSettings);
var t = client.PutAsync($"/subscriptions/{azureEnvironment.SubscriptionId}/resourceGroups/{azureEnvironment.ServicePlanResourceGroupName}/providers/Microsoft.Web/certificates/{newCert.Name}?api-version=2016-03-01", new StringContent(body, Encoding.UTF8, "application/json")).Result;
t.EnsureSuccessStatusCode();
foreach (var dnsName in model.AllDnsIdentifiers)
{
var sslState = s.HostNameSslStates.FirstOrDefault(g => g.Name == dnsName);
if (sslState == null)
{
sslState = new HostNameSslState()
{
Name = model.Host,
SslState = settings.UseIPBasedSSL ? SslState.IpBasedEnabled : SslState.SniEnabled,
};
s.HostNameSslStates.Add(sslState);
}
else
{
//First time setting the HostNameSslState it is set to disabled.
sslState.SslState = settings.UseIPBasedSSL ? SslState.IpBasedEnabled : SslState.SniEnabled;
}
sslState.ToUpdate = true;
sslState.Thumbprint = cert.Certificate.Thumbprint;
}
webSiteClient.WebApps.BeginCreateOrUpdateSiteOrSlot(azureEnvironment.ResourceGroupName, azureEnvironment.WebAppName, azureEnvironment.SiteSlotName, s);
}
}
public async Task <List <AcmeConfig> > RenewCertificate(bool skipInstallCertificate = false, int renewXNumberOfDaysBeforeExpiration = 0)
{
Trace.TraceInformation("Checking certificate");
var ss = SettingsStore.Instance.Load();
using (var client = ArmHelper.GetWebSiteManagementClient(settings))
using (var httpClient = ArmHelper.GetHttpClient(settings))
{
//Cant just get certificates by resource group, because sites that have been moved, have their certs sitting in the old RG.
//Also cant use client.Certificates.List() due to bug in the nuget
var response = await httpClient.GetAsync($"/subscriptions/{settings.SubscriptionId}/providers/Microsoft.Web/certificates?api-version=2016-03-01");
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
IEnumerable <Certificate> certs = JsonConvert.DeserializeObject <Certificate[]>(body, JsonHelper.DefaultSerializationSettings);
var expiringCerts = certs.Where(s => s.ExpirationDate < DateTime.UtcNow.AddDays(renewXNumberOfDaysBeforeExpiration) && (s.Issuer.Contains("Let's Encrypt") || s.Issuer.Contains("Fake LE")));
if (expiringCerts.Count() == 0)
{
Trace.TraceInformation(string.Format("No certificates installed issued by Let's Encrypt that are about to expire within the next {0} days. Skipping.", renewXNumberOfDaysBeforeExpiration));
}
var res = new List <AcmeConfig>();
foreach (var toExpireCert in expiringCerts)
{
Trace.TraceInformation("Starting renew of certificate " + toExpireCert.Name + " expiration date " + toExpireCert.ExpirationDate);
var site = client.WebApps.Get(settings.ResourceGroupName, settings.WebAppName);
var sslStates = site.HostNameSslStates.Where(s => s.Thumbprint == toExpireCert.Thumbprint);
if (!sslStates.Any())
{
Trace.TraceInformation(String.Format("Certificate {0} was not assigned any hostname, skipping update", toExpireCert.Thumbprint));
continue;
}
var target = new AcmeConfig()
{
RegistrationEmail = this.acmeConfig.RegistrationEmail ?? ss.FirstOrDefault(s => s.Name == "email").Value,
Host = sslStates.First().Name,
BaseUri = this.acmeConfig.BaseUri ?? ss.FirstOrDefault(s => s.Name == "baseUri").Value,
AlternateNames = sslStates.Skip(1).Select(s => s.Name).ToList(),
PFXPassword = this.acmeConfig.PFXPassword,
RSAKeyLength = this.acmeConfig.RSAKeyLength
};
if (!skipInstallCertificate)
{
await RequestAndInstallInternalAsync(target);
}
res.Add(target);
}
return(res);
}
}
public static async Task<IReadOnlyList<string>> GetNonExpiringLetsEncryptHostNames(IAzureWebAppEnvironment webAppEnvironment, bool staging, int renewXNumberOfDaysBeforeExpiration)
{
Site site;
using (var client = await ArmHelper.GetWebSiteManagementClient(webAppEnvironment).ConfigureAwait(false))
{
var webAppName = webAppEnvironment.WebAppName;
var resourceGroupName = webAppEnvironment.ResourceGroupName;
var siteSlotName = webAppEnvironment.SiteSlotName;
Trace.TraceInformation(
"Getting Web App '{0}' (slot '{1}') from resource group '{2}'",
webAppName,
siteSlotName,
resourceGroupName);
site = client.WebApps.GetSiteOrSlot(resourceGroupName, webAppName, siteSlotName);
if (site == null)
{
throw new InvalidOperationException(
$"Could not find web app '{webAppName}' (slot '{siteSlotName}') under Resource Groups '{resourceGroupName}'");
}
}
using (var httpClient = await ArmHelper.GetHttpClient(webAppEnvironment).ConfigureAwait(false))
{
var certRequestUri = $"/subscriptions/{webAppEnvironment.SubscriptionId}/providers/Microsoft.Web/certificates?api-version=2016-03-01";
Trace.TraceInformation("GET {0}", certRequestUri);
var response = await ArmHelper.ExponentialBackoff().ExecuteAsync(() => httpClient.GetAsync(new Uri(certRequestUri, UriKind.Relative))).ConfigureAwait(false);
Trace.TraceInformation("Reading ARM certificate query response");
var body = await response.EnsureSuccessStatusCode().Content.ReadAsStringAsync().ConfigureAwait(false);
var letsEncryptIssuerNames = staging ? s_letsEncrypStagingtIssuerNames : s_letsEncryptIssuerNames;
var letsEncryptNonExpiringCerts = ExtractCertificates(body).Where(cert =>
letsEncryptIssuerNames.Contains(cert.Issuer) &&
cert.ExpirationDate > DateTime.UtcNow.AddDays(renewXNumberOfDaysBeforeExpiration));
var letsEncryptNonExpiringThumbprints = new HashSet<string>(letsEncryptNonExpiringCerts.Select(c => c.Thumbprint));
return site.HostNameSslStates.Where(ssl => letsEncryptNonExpiringThumbprints.Contains(ssl.Thumbprint)).Select(ssl => ssl.Name).ToArray();
}
}
public AzureDnsAuthorizationChallengeProvider(IAzureEnvironment azureEnvironment)
{
this.httpClient = ArmHelper.GetHttpClient(azureEnvironment);
}
