c# - IdentityServer4在asp.net core中注册UserService并从数据库中获取用户

标签 c# asp.net-core identityserver4

我已经搜索过如何在 asp.net core 中使用 IdentityServer4 注册 UserService,但我似乎找不到正确的方法。

这是注册 InMemoryUsers 的代码 here ,但是我想从我的 MSSQL DB 访问用户,而不是示例中定义的静态用户。

var builder = services.AddIdentityServer(options =>
{
    options.SigningCertificate = cert;
});

builder.AddInMemoryClients(Clients.Get());
builder.AddInMemoryScopes(Scopes.Get());
builder.AddInMemoryUsers(Users.Get());

然后我查看了this适用于 IdentityServer3

var factory = new IdentityServerServiceFactory()
                .UseInMemoryClients(Clients.Get())
                .UseInMemoryScopes(Scopes.Get());

var userService = new UserService();
factory.UserService = new Registration<IUserService>(resolver => userService);

从在线阅读看来我需要使用 DI 系统来注册 UserService,但我不确定它如何绑定(bind)到 IdentityServer 例如。

services.AddScoped<IUserService, UserService>();

所以我的问题是:

如何将我的 UserService 绑定(bind)到构建器(IdentityServer4 用户)?我将如何调用我的数据库来访问和验证 UserService 中现有的数据库用户(我使用存储库连接到数据库)?

考虑到这必须asp.net core 一起工作。

谢谢!

最佳答案

更新 - IdentityServer 4 已更改并将 IUserService 替换为 IResourceOwnerPasswordValidatorIProfileService

我使用 UserRepository 从数据库中获取所有用户数据。这被注入(inject) (DI) 到构造函数中,并在 Startup.cs 中定义。我还为身份服务器创建了以下类(也被注入(inject)):

首先定义ResourceOwnerPasswordValidator.cs:

public class ResourceOwnerPasswordValidator : IResourceOwnerPasswordValidator
{
    //repository to get user from db
    private readonly IUserRepository _userRepository;

    public ResourceOwnerPasswordValidator(IUserRepository userRepository)
    {
        _userRepository = userRepository; //DI
    }

    //this is used to validate your user account with provided grant at /connect/token
    public async Task ValidateAsync(ResourceOwnerPasswordValidationContext context)
    {
        try
        {
            //get your user model from db (by username - in my case its email)
            var user = await _userRepository.FindAsync(context.UserName);
            if (user != null)
            {
                //check if password match - remember to hash password if stored as hash in db
                if (user.Password == context.Password) {
                    //set the result
                    context.Result = new GrantValidationResult(
                        subject: user.UserId.ToString(),
                        authenticationMethod: "custom", 
                        claims: GetUserClaims(user));

                    return;
                } 

                context.Result = new GrantValidationResult(TokenRequestErrors.InvalidGrant, "Incorrect password");
                return;
            }
            context.Result = new GrantValidationResult(TokenRequestErrors.InvalidGrant, "User does not exist.");
            return;
        }
        catch (Exception ex)
        {
            context.Result = new GrantValidationResult(TokenRequestErrors.InvalidGrant, "Invalid username or password");
        }
    }

    //build claims array from user data
    public static Claim[] GetUserClaims(User user)
    {
        return new Claim[]
        {
            new Claim("user_id", user.UserId.ToString() ?? ""),
            new Claim(JwtClaimTypes.Name, (!string.IsNullOrEmpty(user.Firstname) && !string.IsNullOrEmpty(user.Lastname)) ? (user.Firstname + " " + user.Lastname) : ""),
            new Claim(JwtClaimTypes.GivenName, user.Firstname  ?? ""),
            new Claim(JwtClaimTypes.FamilyName, user.Lastname  ?? ""),
            new Claim(JwtClaimTypes.Email, user.Email  ?? ""),
            new Claim("some_claim_you_want_to_see", user.Some_Data_From_User ?? ""),

            //roles
            new Claim(JwtClaimTypes.Role, user.Role)
        };
}

ProfileService.cs:

public class ProfileService : IProfileService
{
    //services
    private readonly IUserRepository _userRepository;

    public ProfileService(IUserRepository userRepository)
    {
        _userRepository = userRepository;
    }

    //Get user profile date in terms of claims when calling /connect/userinfo
    public async Task GetProfileDataAsync(ProfileDataRequestContext context)
    {
        try
        {
            //depending on the scope accessing the user data.
            if (!string.IsNullOrEmpty(context.Subject.Identity.Name))
            {
                //get user from db (in my case this is by email)
                var user = await _userRepository.FindAsync(context.Subject.Identity.Name);

                if (user != null)
                {
                    var claims = GetUserClaims(user);

                    //set issued claims to return
                    context.IssuedClaims = claims.Where(x => context.RequestedClaimTypes.Contains(x.Type)).ToList();
                }
            }
            else
            {
                //get subject from context (this was set ResourceOwnerPasswordValidator.ValidateAsync),
                //where and subject was set to my user id.
                var userId = context.Subject.Claims.FirstOrDefault(x => x.Type == "sub");

                if (!string.IsNullOrEmpty(userId?.Value) && long.Parse(userId.Value) > 0)
                {
                    //get user from db (find user by user id)
                    var user = await _userRepository.FindAsync(long.Parse(userId.Value));

                    // issue the claims for the user
                    if (user != null)
                    {
                        var claims = ResourceOwnerPasswordValidator.GetUserClaims(user);

                        context.IssuedClaims = claims.Where(x => context.RequestedClaimTypes.Contains(x.Type)).ToList();
                    }
                }
            }
        }
        catch (Exception ex)
        {
            //log your error
        }
    }

    //check if user account is active.
    public async Task IsActiveAsync(IsActiveContext context)
    {
        try
        {
            //get subject from context (set in ResourceOwnerPasswordValidator.ValidateAsync),
            var userId = context.Subject.Claims.FirstOrDefault(x => x.Type == "user_id");

            if (!string.IsNullOrEmpty(userId?.Value) && long.Parse(userId.Value) > 0)
            {
                var user = await _userRepository.FindAsync(long.Parse(userId.Value));

                if (user != null)
                {
                    if (user.IsActive)
                    {
                        context.IsActive = user.IsActive;
                    }
                }
            }
        }
        catch (Exception ex)
        {
            //handle error logging
        }
    }
}

然后在 Startup.cs 中我做了以下事情:

public void ConfigureServices(IServiceCollection services)
{
    //...

    //identity server 4 cert
    var cert = new X509Certificate2(Path.Combine(_environment.ContentRootPath, "idsrv4test.pfx"), "your_cert_password");

    //DI DBContext inject connection string
    services.AddScoped(_ => new YourDbContext(Configuration.GetConnectionString("DefaultConnection")));

    //my user repository
    services.AddScoped<IUserRepository, UserRepository>();

    //add identity server 4
    services.AddIdentityServer()
        .AddSigningCredential(cert)
        .AddInMemoryIdentityResources(Config.GetIdentityResources()) //check below
        .AddInMemoryApiResources(Config.GetApiResources())
        .AddInMemoryClients(Config.GetClients())
        .AddProfileService<ProfileService>();

    //Inject the classes we just created
    services.AddTransient<IResourceOwnerPasswordValidator, ResourceOwnerPasswordValidator>();
    services.AddTransient<IProfileService, ProfileService>();

    //...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    //...

    app.UseIdentityServer();

    JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();

    IdentityServerAuthenticationOptions identityServerValidationOptions = new IdentityServerAuthenticationOptions
    {
        //move host url into appsettings.json
        Authority = "http://localhost:50000/",
        ApiSecret = "secret",
        ApiName = "my.api.resource",
        AutomaticAuthenticate = true,
        SupportedTokens = SupportedTokens.Both,

        // required if you want to return a 403 and not a 401 for forbidden responses
        AutomaticChallenge = true,

        //change this to true for SLL
        RequireHttpsMetadata = false
    };

    app.UseIdentityServerAuthentication(identityServerValidationOptions);

    //...
}

您还需要 Config.cs 来定义您的客户端、api 和资源。你可以在这里找到一个例子:https://github.com/IdentityServer/IdentityServer4.Demo/blob/master/src/IdentityServer4Demo/Config.cs

您现在应该可以调用 IdentityServer/connect/token

enter image description here

如需了解更多信息,请查看文档:https://media.readthedocs.org/pdf/identityserver4/release/identityserver4.pdf


旧答案(这不再适用于较新的 IdentityServer4)

一旦你理解了事情的流程,它就非常简单了。

像这样配置您的 IdentityService(在 Startup.cs - ConfigureServices()):

var builder = services.AddIdentityServer(options =>
{
    options.SigningCertificate = cert;
});

builder.AddInMemoryClients(Clients.Get());
builder.AddInMemoryScopes(Scopes.Get());

//** this piece of code DI's the UserService into IdentityServer **
builder.Services.AddTransient<IUserService, UserService>();

//for clarity of the next piece of code
services.AddTransient<IUserRepository, UserRepository>();

然后设置你的用户服务

public class UserService : IUserService
{
    //DI the repository from Startup.cs - see previous code block
    private IUserRepository _userRepository;

    public UserService(IUserRepository userRepository)
    {
        _userRepository = userRepository;
    }

    public Task AuthenticateLocalAsync(LocalAuthenticationContext context)
    {
        var user = _userRepository.Find(context.UserName);

        //check if passwords match against user column 
        //My password was hashed, 
        //so I had to hash it with the saved salt first and then compare.
        if (user.Password == context.Password)
        {
            context.AuthenticateResult = new AuthenticateResult(
                user.UserId.ToString(),
                user.Email,

                //I set up some claims 
                new Claim[]
                {
                    //Firstname and Surname are DB columns mapped to User object (from table [User])
                    new Claim(Constants.ClaimTypes.Name, user.Firstname + " " + user.Surname),
                    new Claim(Constants.ClaimTypes.Email, user.Email),
                    new Claim(Constants.ClaimTypes.Role, user.Role.ToString()),
                    //custom claim
                    new Claim("company", user.Company)
                }
            );
        }

        return Task.FromResult(0);
    }

    public Task GetProfileDataAsync(ProfileDataRequestContext context)
    {
        //find method in my repository to check my user email
        var user = _userRepository.Find(context.Subject.Identity.Name);

        if (user != null)
        {
            var claims = new Claim[]
                {
                    new Claim(Constants.ClaimTypes.Name, user.Firstname + " " + user.Surname),
                    new Claim(Constants.ClaimTypes.Email, user.Email),
                    new Claim(Constants.ClaimTypes.Role, user.Role.ToString(), ClaimValueTypes.Integer),
                    new Claim("company", user.Company)
            };

            context.IssuedClaims = claims.Where(x => context.RequestedClaimTypes.Contains(x.Type));
        }

        return Task.FromResult(0);
    }

    public Task IsActiveAsync(IsActiveContext context)
    {
        var user = _userRepository.Find(context.Subject.Identity.Name);

        return Task.FromResult(user != null);
    }
}

基本上是通过将 UserService 注入(inject)到 builder(IdentityServerBuilder 类型)Services 中,允许它调用 UserService关于授权。

我希望这对其他人有帮助,因为我花了几个小时才开始。

关于c# - IdentityServer4在asp.net core中注册UserService并从数据库中获取用户,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35304038/

相关文章:

c# - 使用 MVVM、 Entity Framework 和 mysql 将基本数据绑定(bind)到文本框

c# - 从另一个项目继承 (?) IdentityUser

c# - 未知客户端或客户端未启用 Identity Server 4

angular - 让 angular-oauth2-oidc 从其他选项卡检索访问 token

c# - 带有 RSA 加密的 SHA1 : bad length error

c# - 将一个窗口拖放到另一个窗口中

c# - 如何在 ASP.NET Core 2 中设置默认主页?

c# - 使用内置的 ASP.NET Core Web 服务器构建 .NET Core 控制台应用程序?

asp.net - 使用 IdentityServer4 动态添加 SSO 步骤

c# - 从异步编程模型 (APM) 转向基于任务的异步模式 (TAP)