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使用请求头认证来测试需要授权的 API 接口

时间:2022-05-22 08:15:18

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使用请求头认证来测试需要授权的 API 接口

使用请求头认证来测试需要授权的 API 接口

Intro

有一些需要认证授权的接口在写测试用例的时候一般会先获取一个 token,然后再去调用接口,其实这样做的话很不灵活,一方面是存在着一定的安全性问题,获取 token 可能会有一些用户名密码之类的测试数据,还有就是获取 token 的话如果全局使用同一个 token 会很不灵活,如果我要测试没有用户信息的话还比较简单,我可以不传递 token,如果token里有两个角色,我要测试另外一个角色的时候,只能给这个测试用户新增一个角色然后再获取token,这样就很不灵活,于是我就尝试把之前写的自定义请求头认证的代码,整理了一下,集成到了一个 nuget 包里以方便其他项目使用,nuget 包是WeihanLi.Web.Extensions,源代码在这里 /WeihanLi/WeihanLi.Web.Extensions 有想自己改的可以直接拿去用,目前提供了基于请求头的认证和基于 QueryString 的认证两种认证方式。

实现效果

基于请求头动态配置用户的信息,需要什么样的信息就在请求头中添加什么信息,示例如下:

再来看个单元测试的示例:

[Fact]public async Task MakeReservationWithUserInfo(){using var request = new HttpRequestMessage(HttpMethod.Post, "/api/reservations");request.Headers.TryAddWithoutValidation("UserId", GuidIdGenerator.Instance.NewId()); // 用户Idrequest.Headers.TryAddWithoutValidation("UserName", Environment.UserName); // 用户名request.Headers.TryAddWithoutValidation("UserRoles", "User,ReservationManager"); //用户角色request.Content = new StringContent($@"{{""reservationUnit"":""nnnnn"",""reservationActivityContent"":""13211112222"",""reservationPersonName"":""谢谢谢"",""reservationPersonPhone"":""13211112222"",""reservationPlaceId"":""f9833d13-a57f-4bc0-9197-232113667ece"",""reservationPlaceName"":""第一多功能厅"",""reservationForDate"":""-06-13"",""reservationForTime"":""10:00~12:00"",""reservationForTimeIds"":""1""}}", Encoding.UTF8, "application/json");using var response = await Client.SendAsync(request);Assert.Equal(HttpStatusCode.OK, response.StatusCode);}

实现原理解析

实现原理其实挺简单的,就是实现了一种基于 header 的自定义认证模式,从 header 中获取用户信息并进行认证,核心代码如下:

protected override async Task<AuthenticateResult> HandleAuthenticateAsync(){if (await Options.AuthenticationValidator(Context)){var claims = new List<Claim>();if (Request.Headers.TryGetValue(Options.UserIdHeaderName, out var userIdValues)){claims.Add(new Claim(ClaimTypes.NameIdentifier, userIdValues.ToString()));}if (Request.Headers.TryGetValue(Options.UserNameHeaderName, out var userNameValues)){claims.Add(new Claim(ClaimTypes.Name, userNameValues.ToString()));}if (Request.Headers.TryGetValue(Options.UserRolesHeaderName, out var userRolesValues)){var userRoles = userRolesValues.ToString().Split(new[] { Options.Delimiter }, StringSplitOptions.RemoveEmptyEntries);claims.AddRange(userRoles.Select(r => new Claim(ClaimTypes.Role, r)));}if (Options.AdditionalHeaderToClaims.Count > 0){foreach (var headerToClaim in Options.AdditionalHeaderToClaims){if (Request.Headers.TryGetValue(headerToClaim.Key, out var headerValues)){foreach (var val in headerValues.ToString().Split(new[] { Options.Delimiter }, StringSplitOptions.RemoveEmptyEntries)){claims.Add(new Claim(headerToClaim.Value, val));}}}}// claims identity 's authentication type can not be null /questions/45261732/user-identity-isauthenticated-always-false-in-net-core-custom-authenticationvar principal = new ClaimsPrincipal(new ClaimsIdentity(claims, Scheme.Name));var ticket = new AuthenticationTicket(principal,Scheme.Name);return AuthenticateResult.Success(ticket);}return AuthenticateResult.NoResult();}

其实就是将请求头的信息读取到 Claims,然后返回一个ClaimsPrincipalAuthenticationTicket,在读取 header 之前有一个AuthenticationValidator是用来验证请求是不是满足使用 Header 认证,是一个基于 HttpContext 的断言委托(Func<HttpContext, Task<bool>>),默认实现是验证是否有 UserId 对应的 Header,如果要修改可以通过 Startup 来配置

使用示例

Startup 配置,和其它的认证方式一样,Header 认证和 Query 认证也提供了基于AuthenticationBuilder的扩展,只需要在services.AddAuthentication()后增加 Header 认证的模式即可,示例如下:

services.AddAuthentication(HeaderAuthenticationDefaults.AuthenticationSchema).AddQuery(options =>{options.UserIdQueryKey = "uid";}).AddHeader(options =>{options.UserIdHeaderName = "X-UserId";options.UserNameHeaderName = "X-UserName";options.UserRolesHeaderName = "X-UserRoles";});

默认的 Header 是 UserId/UserName/UserRoles,你也可以自定义为符合自己需要的配置,如果只是想新增一个转换可以配置AdditionalHeaderToClaims增加自己需要的请求头 => Claims 转换,AuthenticationValidator也可以自定义,就是上面提到的会首先会验证是不是需要读取 Header,验证通过之后才会读取 Header 信息并认证

测试示例

有一个接口我需要登录之后才能访问,需要用户信息,类似下面这样

[HttpPost][Authorize]public async Task<IActionResult> MakeReservation([FromBody] ReservationViewModel model){// ...}

在测试代码里我配置使用了 Header 认证,在请求的时候直接通过 Header 来控制用户的信息

Startup 配置:

services.AddAuthentication(HeaderAuthenticationDefaults.AuthenticationSchema).AddHeader()// 使用 Query 认证//.AddAuthentication(QueryAuthenticationDefaults.AuthenticationSchema)//.AddQuery();

测试代码:

[Fact]public async Task MakeReservationWithUserInfo(){using var request = new HttpRequestMessage(HttpMethod.Post, "/api/reservations");request.Headers.TryAddWithoutValidation("UserId", GuidIdGenerator.Instance.NewId());request.Headers.TryAddWithoutValidation("UserName", Environment.UserName);request.Headers.TryAddWithoutValidation("UserRoles", "User,ReservationManager");request.Content = new StringContent($@"{{""reservationUnit"":""nnnnn"",""reservationActivityContent"":""13211112222"",""reservationPersonName"":""谢谢谢"",""reservationPersonPhone"":""13211112222"",""reservationPlaceId"":""f9833d13-a57f-4bc0-9197-232113667ece"",""reservationPlaceName"":""第一多功能厅"",""reservationForDate"":""-06-13"",""reservationForTime"":""10:00~12:00"",""reservationForTimeIds"":""1""}}", Encoding.UTF8, "application/json");using var response = await Client.SendAsync(request);Assert.Equal(HttpStatusCode.OK, response.StatusCode);}[Fact]public async Task MakeReservationWithInvalidUserInfo(){using var request = new HttpRequestMessage(HttpMethod.Post, "/api/reservations");request.Headers.TryAddWithoutValidation("UserName", Environment.UserName);request.Content = new StringContent($@"{{""reservationUnit"":""nnnnn"",""reservationActivityContent"":""13211112222"",""reservationPersonName"":""谢谢谢"",""reservationPersonPhone"":""13211112222"",""reservationPlaceId"":""f9833d13-a57f-4bc0-9197-232113667ece"",""reservationPlaceName"":""第一多功能厅"",""reservationForDate"":""-06-13"",""reservationForTime"":""10:00~12:00"",""reservationForTimeIds"":""1""}}", Encoding.UTF8, "application/json");using var response = await Client.SendAsync(request);Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);}[Fact]public async Task MakeReservationWithoutUserInfo(){using var request = new HttpRequestMessage(HttpMethod.Post, "/api/reservations"){Content = new StringContent(@"{""reservationUnit"":""nnnnn"",""reservationActivityContent"":""13211112222"",""reservationPersonName"":""谢谢谢"",""reservationPersonPhone"":""13211112222"",""reservationPlaceId"":""f9833d13-a57f-4bc0-9197-232113667ece"",""reservationPlaceName"":""第一多功能厅"",""reservationForDate"":""-06-13"",""reservationForTime"":""10:00~12:00"",""reservationForTimeIds"":""1""}",Encoding.UTF8, "application/json")};using var response = await Client.SendAsync(request);Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);}

More

QueryString 认证和请求头认证是类似的,这里就不再赘述,只是把请求头上的参数转移到 QueryString 上了,觉得不够好用的可以直接 Github 上找源码修改, 也欢迎 PR,源码地址:/WeihanLi/WeihanLi.Web.Extensions

Reference

/WeihanLi/WeihanLi.Web.Extensions

/packages/WeihanLi.Web.Extensions

/OpenReservation/ReservationServer/blob/dev/ActivityReservation.API.Test/TestStartup.cs

/OpenReservation/ReservationServer/blob/dev/ActivityReservation.API.Test/Controllers/ReservationControllerTest.cs

/weihanli/p/cutom-authentication-in-aspnetcore.html

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