handleLogin() {this.$refs.loginForm.validate(valid => {if (valid) {this.$store.dispatch("LoginByUsername", this.loginForm).then(() => {this.$router.push({path: this.tagWel.value});}).catch(() => {this.refreshCode();});}});}
看一下LoginByUsername,在/src/store/modules/user.js中
const scope = 'server'export const loginByUsername = (username, password, code, randomStr) => {const grant_type = 'password'let dataObj = qs.stringify({'username': username, 'password': password})let basicAuth = 'Basic ' + window.btoa(website.formLoginClient)// 保存当前选中的 basic 认证信息setStore({name: 'basicAuth',content: basicAuth,type: 'session'})return request({url: '/auth/oauth2/token',headers: {isToken: false,Authorization: basicAuth},method: 'post',params: {randomStr, code, grant_type, scope},data: dataObj})
}
当访问 OAuth2 相关接口时(/oauth2/token、/oauth2/introspect、/oauth2/revoke),授权服务器需要进行客户端认证。
Spring Authorization Server 截至目前支持如下五种客户端认证方式:client_secret_basic、client_secret_post、client_secret_jwt、private_key_jwt、none (针对公共客户端)
实现客户端认证的拦截器就是 OAuth2ClientAuthenticationFilter。 其核心代码如下:
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)throws ServletException, IOException {if (!this.requestMatcher.matches(request)) {filterChain.doFilter(request, response);return;}try {Authentication authenticationRequest = this.authenticationConverter.convert(request);if (authenticationRequest instanceof AbstractAuthenticationToken) {((AbstractAuthenticationToken) authenticationRequest).setDetails(this.authenticationDetailsSource.buildDetails(request));}if (authenticationRequest != null) {Authentication authenticationResult = this.authenticationManager.authenticate(authenticationRequest);this.authenticationSuccessHandler.onAuthenticationSuccess(request, response, authenticationResult);}filterChain.doFilter(request, response);} catch (OAuth2AuthenticationException ex) {this.authenticationFailureHandler.onAuthenticationFailure(request, response, ex);}
}
其核心逻辑就是通过 authenticationConverter 从 request 中解析出客户端认证信息,构建成 Authentication,再通过 authenticationManager 对 Authentication 进行认证。
authenticationConverter 的类型实际上是 DelegatingAuthenticationConverter,它持有一个 AuthenticationConverter 列表(不同的认证请求,其参数不同,所以会有不同的AuthenticationConverter实现类)。
DelegatingAuthenticationConverter 在解析请求时会遍历 AuthenticationConverter 列表,当某个 AuthenticationConverter 解析成功时,立即返回,这也能确定此请求是什么认证方式,后续再执行对应的认证逻辑。
private AuthenticationConverter authenticationConverter;public OAuth2ClientAuthenticationFilter(AuthenticationManager authenticationManager,RequestMatcher requestMatcher) {Assert.notNull(authenticationManager, "authenticationManager cannot be null");Assert.notNull(requestMatcher, "requestMatcher cannot be null");this.authenticationManager = authenticationManager;this.requestMatcher = requestMatcher;this.authenticationConverter = new DelegatingAuthenticationConverter(Arrays.asList(new JwtClientAssertionAuthenticationConverter(),new ClientSecretBasicAuthenticationConverter(),new ClientSecretPostAuthenticationConverter(),new PublicClientAuthenticationConverter()));}
authenticationManager 的类型实际上是 ProviderManager,它持有一个 AuthenticationProvider 列表(不同的认证方式,其认证逻辑不同,所以会有不同的AuthenticationProvider实现类)。
AuthenticationManager 接口的默认实现为 ProviderManager

authenticationManager调用authenticate

调用 AuthenticationProvider 中的 supports(Class> authentication) 方法,判断是否支持当前的 Authentication 请求。
public Authentication authenticate(Authentication authentication)throws AuthenticationException {......for (AuthenticationProvider provider : getProviders()) {if (!provider.supports(toTest)) {continue;}
只有支持当前 Authentication 请求的 AuthenticationProvider 才会继续后续逻辑处理。
然后调用 AuthenticationProvider 中的 authenticate 方法进行身份认证。
此处的provider为ClientSecretAuthenticationProvider

public Authentication authenticate(Authentication authentication)throws AuthenticationException {......for (AuthenticationProvider provider : getProviders()) {if (!provider.supports(toTest)) {continue;}......try {result = provider.authenticate(authentication);......}
在ClientSecretAuthenticationProvider中调用RegisteredClientRepository,通过clientId去数据库查询client


如果认证成功且返回的结果不为 null,则执行 authentication details 的拷贝逻辑。
try {result = provider.authenticate(authentication);if (result != null) {copyDetails(authentication, result);break;}
}......private void copyDetails(Authentication source, Authentication dest) {if ((dest instanceof AbstractAuthenticationToken) && (dest.getDetails() == null)) {AbstractAuthenticationToken token = (AbstractAuthenticationToken) dest;token.setDetails(source.getDetails());}
}
如果发生 AccountStatusException 或 InternalAuthenticationServiceException 异常,则会通过Spring事件发布器AuthenticationEventPublisher 发布异常事件。
catch (AccountStatusException e) {prepareException(e, authentication);// SEC-546: Avoid polling additional providers if auth failure is due to// invalid account statusthrow e;
}
catch (InternalAuthenticationServiceException e) {prepareException(e, authentication);throw e;
}......private void prepareException(AuthenticationException ex, Authentication auth) {eventPublisher.publishAuthenticationFailure(ex, auth);
}
如果异常为其它类型的 AuthenticationException,则将此异常设置为lastException并返回。
catch (AuthenticationException e) {lastException = e;
}
如果认证结果为 null,且存在父 AuthenticationManager,则调用父 AuthenticationManager 进行同样的身份认证操作,其处理逻辑基本同上。
if (result == null && parent != null) {// Allow the parent to try.try {result = parentResult = parent.authenticate(authentication);}catch (ProviderNotFoundException e) {// ignore as we will throw below if no other exception occurred prior to// calling parent and the parent// may throw ProviderNotFound even though a provider in the child already// handled the request}catch (AuthenticationException e) {lastException = parentException = e;}
}
如果认证结果不为 null,同时,此时的 eraseCredentialsAfterAuthentication 参数为 true,且此时认证后的Authentication 实现了 CredentialsContainer 接口,那么即调用 CredentialsContainer 接口的凭据擦除方法,即eraseCredentials,擦除相关凭据信息。
if (result != null) {if (eraseCredentialsAfterAuthentication&& (result instanceof CredentialsContainer)) {// Authentication is complete. Remove credentials and other secret data// from authentication((CredentialsContainer) result).eraseCredentials();}// If the parent AuthenticationManager was attempted and successful than it will publish an AuthenticationSuccessEvent// This check prevents a duplicate AuthenticationSuccessEvent if the parent AuthenticationManager already published itif (parentResult == null) {eventPublisher.publishAuthenticationSuccess(result);}return result;
}
其中,有一个防止重复发布 AuthenticationSuccessEvent 事件的处理,即 parentResult 为空。如果 parentResult为 null,则代表父 AuthenticationManager 不存在或者没有身份认证成功,也即没有发布过 AuthenticationSuccessEvent 事件。此时,便由此处发布 AuthenticationSuccessEvent 事件。
如果lastException 为 null,则代表当前的 Authentication 并没有对应支持的 Provider。此时,便会抛出相应异常。
if (lastException == null) {lastException = new ProviderNotFoundException(messages.getMessage("ProviderManager.providerNotFound",new Object[] { toTest.getName() },"No AuthenticationProvider found for {0}"));
}
如同防止重复发布 AuthenticationSuccessEvent 事件的处理一样,也有一个防止 AbstractAuthenticationFailureEvent 事件重复发布的逻辑处理。如果 parentException 为 null,则代表父AuthenticationManager 不存在、没有进行身份认证或者发布过 AbstractAuthenticationFailureEvent 事件,此时,便由此处发布 AbstractAuthenticationFailureEvent 事件。
if (parentException == null) {prepareException(lastException, authentication);
}throw lastException;
最后,抛出 lastException。
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