c# - 'await' 运算符只能在 async > 方法中使用
问题描述
我有以下控制器:
[Authorize]
public class SetupController : ApiController
{
[HttpPost]
public Task async SetupPartnerPackAsync(SetupInformation info)
{
if (info.SslCertificateGenerate)
{
SetupManager.CreateX509Certificate(info);
}
else
{
SetupManager.LoadX509Certificate(info);
}
info.SslCertificateThumbprint = SetupManager.GetX509CertificateThumbprint(info);
info.AzureAppKeyCredential = SetupManager.GetX509CertificateInformation(info);
await SetupManager.RegisterAzureADApplication(info);
}
}
但我有以下 2 个错误,看起来很简单:
严重性代码 描述 项目文件行抑制状态错误 CS1520 方法必须具有返回类型 InnovationInABoxWebApi H:\InnovationInABoxWebApi\InnovationInABoxWebApi\Controllers\SetupController.cs 24 活动
严重性代码 描述 项目文件行抑制状态错误 CS4033 'await' 运算符只能在异步方法中使用。考虑使用“异步”修饰符标记此方法并将其返回类型更改为“任务”。InnovationInABoxWebApi H:\InnovationInABoxWebApi\InnovationInABoxWebApi\Controllers\SetupController.cs 39 活动
但是我不确定如何解决这个问题,因为操作可能需要一些时间才能完成,它确实需要是 asybnc
和设置管理器
using CERTENROLLLib;
using Microsoft.Identity.Client;
using Microsoft.Online.SharePoint.TenantAdministration;
using Microsoft.SharePoint.Client;
using Newtonsoft.Json;
using OfficeDevPnP.Core;
using OfficeDevPnP.Core.Entities;
using OfficeDevPnP.Core.Framework.Provisioning.Model;
using OfficeDevPnP.Core.Framework.Provisioning.ObjectHandlers;
using OfficeDevPnP.Core.Framework.Provisioning.Providers.Xml;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Resources;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Xml.Linq;
namespace InnovationInABoxWebApi.Components
{
public static class SetupManager
{
public static String GetX509CertificateThumbprint(SetupInformation info)
{
var certificate = info.AuthenticationCertificate;
return (certificate.Thumbprint.ToUpper());
}
public static String GetX509CertificateInformation(SetupInformation info)
{
// var basePath = String.Format(@"{0}..\..\..\..\Scripts\", AppDomain.CurrentDomain.BaseDirectory);
var certificate = info.AuthenticationCertificate;
//var certificate = new X509Certificate2();
//if (info.SslCertificateGenerate)
//{
// certificate.Import($@"{basePath}{info.SslCertificateCommonName}.cer");
//}
//else
//{
// certificate = new X509Certificate2(info.SslCertificateFile, info.SslCertificatePassword);
//}
var rawCert = certificate.GetRawCertData();
var base64Cert = System.Convert.ToBase64String(rawCert);
var rawCertHash = certificate.GetCertHash();
var base64CertHash = System.Convert.ToBase64String(rawCertHash);
var KeyId = System.Guid.NewGuid().ToString();
var keyCredential =
"{" +
"\"customKeyIdentifier\": \"" + base64CertHash + "\"," +
"\"keyId\": \"" + KeyId + "\"," +
"\"type\": \"AsymmetricX509Cert\"," +
"\"usage\": \"Verify\"," +
"\"key\": \"" + base64Cert + "\"" +
"}";
return (keyCredential);
}
public static void CreateX509Certificate(SetupInformation info)
{
var certificate = CreateSelfSignedCertificate(info.SslCertificateCommonName.ToLower(),
info.SslCertificateStartDate, info.SslCertificateEndDate, info.SslCertificatePassword);
SaveCertificateFiles(info, certificate);
}
public static void LoadX509Certificate(SetupInformation info)
{
var certificate = new X509Certificate2(info.SslCertificateFile, info.SslCertificatePassword);
info.AuthenticationCertificate = certificate;
info.SslCertificateCommonName = certificate.SubjectName.Name;
}
public static void SaveCertificateFiles(SetupInformation info, X509Certificate2 certificate)
{
info.AuthenticationCertificate = certificate;
//var basePath = String.Format(@"{0}..\..\..\..\Scripts\", AppDomain.CurrentDomain.BaseDirectory);
//info.SslCertificateFile = $@"{basePath}{info.SslCertificateCommonName}.pfx";
//var pfx = certificate.Export(X509ContentType.Pfx, info.SslCertificatePassword);
//System.IO.File.WriteAllBytes(info.SslCertificateFile, pfx);
//var cer = certificate.Export(X509ContentType.Cert);
//System.IO.File.WriteAllBytes($@"{basePath}{info.SslCertificateCommonName}.cer", cer);
}
public static X509Certificate2 CreateSelfSignedCertificate(string subjectName, DateTime startDate, DateTime endDate, String password)
{
// Create DistinguishedName for subject and issuer
var name = new CX500DistinguishedName();
name.Encode("CN=" + subjectName, X500NameFlags.XCN_CERT_NAME_STR_NONE);
// Create a new Private Key for the certificate
CX509PrivateKey privateKey = new CX509PrivateKey();
privateKey.ProviderName = "Microsoft RSA SChannel Cryptographic Provider";
privateKey.KeySpec = X509KeySpec.XCN_AT_KEYEXCHANGE;
privateKey.Length = 2048;
privateKey.SecurityDescriptor = "D:PAI(A;;0xd01f01ff;;;SY)(A;;0xd01f01ff;;;BA)(A;;0x80120089;;;NS)";
privateKey.MachineContext = true;
privateKey.ExportPolicy = X509PrivateKeyExportFlags.XCN_NCRYPT_ALLOW_EXPORT_FLAG;
privateKey.Create();
// Define the hashing algorithm
var serverauthoid = new CObjectId();
serverauthoid.InitializeFromValue("1.3.6.1.5.5.7.3.1"); // Server Authentication
var ekuoids = new CObjectIds();
ekuoids.Add(serverauthoid);
var ekuext = new CX509ExtensionEnhancedKeyUsage();
ekuext.InitializeEncode(ekuoids);
// Create the self signing request
var cert = new CX509CertificateRequestCertificate();
cert.InitializeFromPrivateKey(X509CertificateEnrollmentContext.ContextMachine, privateKey, String.Empty);
cert.Subject = name;
cert.Issuer = cert.Subject;
cert.NotBefore = startDate;
cert.NotAfter = endDate;
cert.X509Extensions.Add((CX509Extension)ekuext);
cert.Encode();
// Enroll the certificate
var enroll = new CX509Enrollment();
enroll.InitializeFromRequest(cert);
string certData = enroll.CreateRequest(EncodingType.XCN_CRYPT_STRING_BASE64HEADER);
enroll.InstallResponse(InstallResponseRestrictionFlags.AllowUntrustedCertificate,
certData, EncodingType.XCN_CRYPT_STRING_BASE64HEADER, String.Empty);
var base64encoded = enroll.CreatePFX(password, PFXExportOptions.PFXExportChainWithRoot);
// Instantiate the target class with the PKCS#12 data
return new X509Certificate2(
System.Convert.FromBase64String(base64encoded), password,
System.Security.Cryptography.X509Certificates.X509KeyStorageFlags.Exportable);
}
public async static Task RegisterAzureADApplication(SetupInformation info)
{
// Fix the App URL
if (!info.AzureWebAppUrl.EndsWith("/"))
{
info.AzureWebAppUrl = info.AzureWebAppUrl + "/";
}
// Load the App Manifest template
//Stream stream = typeof(SetupManager)
// .Assembly
// .GetManifestResourceStream("OfficeDevPnP.PartnerPack.Setup.Resources.azure-ad-app-manifest.json");
using (StreamReader sr = new StreamReader("Resources\azure-ad-app-manifest.json"))
{
// Get the JSON manifest
var jsonApplication = sr.ReadToEnd();
var application = JsonConvert.DeserializeObject<AzureAdApplication>(jsonApplication);
var keyCredential = JsonConvert.DeserializeObject<KeyCredential>(info.AzureAppKeyCredential);
application.displayName = info.ApplicationName;
application.homepage = info.AzureWebAppUrl;
application.identifierUris = new List<String>();
application.identifierUris.Add(info.ApplicationUniqueUri);
application.keyCredentials = new List<KeyCredential>();
application.keyCredentials.Add(keyCredential);
application.replyUrls = new List<String>();
application.replyUrls.Add(info.AzureWebAppUrl);
// Generate the Application Shared Secret
var startDate = DateTime.Now;
Byte[] bytes = new Byte[32];
using (var rand = System.Security.Cryptography.RandomNumberGenerator.Create())
{
rand.GetBytes(bytes);
}
info.AzureAppSharedSecret = System.Convert.ToBase64String(bytes);
application.passwordCredentials = new List<object>();
application.passwordCredentials.Add(new AzureAdApplicationPasswordCredential
{
CustomKeyIdentifier = null,
StartDate = startDate.ToString("o"),
EndDate = startDate.AddYears(2).ToString("o"),
KeyId = Guid.NewGuid().ToString(),
Value = info.AzureAppSharedSecret,
});
// Get an Access Token to create the application via Microsoft Graph
var office365AzureADAccessToken = await AzureManagementUtility.GetAccessTokenSilentAsync(
AzureManagementUtility.MicrosoftGraphResourceId,
ConfigurationManager.AppSettings["O365:ClientId"]);
var azureAdApplicationCreated = false;
// Create the Azure AD Application
try
{
await CreateAzureADApplication(info, application, office365AzureADAccessToken);
azureAdApplicationCreated = true;
}
catch (ApplicationException ex)
{
var graphError = JsonConvert.DeserializeObject<GraphError>(((HttpException)ex.InnerException).Message);
if (graphError != null && graphError.error.code == "Request_BadRequest" &&
graphError.error.message.Contains("identifierUris already exists"))
{
// We need to remove the existing application
// Thus, retrieve it
String jsonApplications = await HttpHelper.MakeGetRequestForStringAsync(
String.Format("{0}applications?$filter=identifierUris/any(c:c+eq+'{1}')",
AzureManagementUtility.MicrosoftGraphBetaBaseUri,
HttpUtility.UrlEncode(info.ApplicationUniqueUri)),
office365AzureADAccessToken);
var applications = JsonConvert.DeserializeObject<AzureAdApplications>(jsonApplications);
var applicationToUpdate = applications.Applications.FirstOrDefault();
if (applicationToUpdate != null)
{
// Remove it
await HttpHelper.MakeDeleteRequestAsync(
String.Format("{0}applications/{1}",
AzureManagementUtility.MicrosoftGraphBetaBaseUri,
applicationToUpdate.Id),
office365AzureADAccessToken);
// And add it again
await CreateAzureADApplication(info, application, office365AzureADAccessToken);
azureAdApplicationCreated = true;
}
}
}
if (azureAdApplicationCreated)
{
// TODO: We should upload the logo
// property mainLogo: stream of the application via PATCH
}
}
}
public static async Task CreateAzureADApplication(SetupInformation info, AzureAdApplication application, string office365AzureADAccessToken)
{
String jsonResponse = await HttpHelper.MakePostRequestForStringAsync(
String.Format("{0}applications",
AzureManagementUtility.MicrosoftGraphBetaBaseUri),
application,
"application/json", office365AzureADAccessToken);
var azureAdApplication = JsonConvert.DeserializeObject<AzureAdApplication>(jsonResponse);
info.AzureAppClientId = azureAdApplication.AppId.HasValue ? azureAdApplication.AppId.Value : Guid.Empty;
}
}
}
解决方案
您async
在返回类型之后使用 word定义方法Task
,async
必须在之前Task
。
public async Task SetupPartnerPackAsync(SetupInformation info)
{
.
.
.
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