Remove redundant validation for redirect-uri

Fixes gh-7706

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/authentication/OAuth2AuthorizationExchangeValidator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,6 @@ import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationResp
  */
 final class OAuth2AuthorizationExchangeValidator {
 	private static final String INVALID_STATE_PARAMETER_ERROR_CODE = "invalid_state_parameter";
-	private static final String INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE = "invalid_redirect_uri_parameter";
 
 	static void validate(OAuth2AuthorizationExchange authorizationExchange) {
 		OAuth2AuthorizationRequest authorizationRequest = authorizationExchange.getAuthorizationRequest();
@@ -44,10 +43,5 @@ final class OAuth2AuthorizationExchangeValidator {
 			OAuth2Error oauth2Error = new OAuth2Error(INVALID_STATE_PARAMETER_ERROR_CODE);
 			throw new OAuth2AuthorizationException(oauth2Error);
 		}
-
-		if (!authorizationResponse.getRedirectUri().equals(authorizationRequest.getRedirectUri())) {
-			OAuth2Error oauth2Error = new OAuth2Error(INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE);
-			throw new OAuth2AuthorizationException(oauth2Error);
-		}
 	}
 }

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/oidc/authentication/OidcAuthorizationCodeAuthenticationProvider.java

@@ -73,7 +73,6 @@ import org.springframework.util.StringUtils;
  */
 public class OidcAuthorizationCodeAuthenticationProvider implements AuthenticationProvider {
 	private static final String INVALID_STATE_PARAMETER_ERROR_CODE = "invalid_state_parameter";
-	private static final String INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE = "invalid_redirect_uri_parameter";
 	private static final String INVALID_ID_TOKEN_ERROR_CODE = "invalid_id_token";
 	private static final String MISSING_SIGNATURE_VERIFIER_ERROR_CODE = "missing_signature_verifier";
 	private final OAuth2AccessTokenResponseClient<OAuth2AuthorizationCodeGrantRequest> accessTokenResponseClient;
@@ -127,11 +126,6 @@ public class OidcAuthorizationCodeAuthenticationProvider implements Authenticati
 			throw new OAuth2AuthenticationException(oauth2Error, oauth2Error.toString());
 		}
 
-		if (!authorizationResponse.getRedirectUri().equals(authorizationRequest.getRedirectUri())) {
-			OAuth2Error oauth2Error = new OAuth2Error(INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE);
-			throw new OAuth2AuthenticationException(oauth2Error, oauth2Error.toString());
-		}
-
 		OAuth2AccessTokenResponse accessTokenResponse;
 		try {
 			accessTokenResponse = this.accessTokenResponseClient.getTokenResponse(

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/oidc/authentication/OidcAuthorizationCodeReactiveAuthenticationManager.java

@@ -76,7 +76,6 @@ public class OidcAuthorizationCodeReactiveAuthenticationManager implements
 		ReactiveAuthenticationManager {
 
 	private static final String INVALID_STATE_PARAMETER_ERROR_CODE = "invalid_state_parameter";
-	private static final String INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE = "invalid_redirect_uri_parameter";
 	private static final String INVALID_ID_TOKEN_ERROR_CODE = "invalid_id_token";
 	private static final String MISSING_SIGNATURE_VERIFIER_ERROR_CODE = "missing_signature_verifier";
 
@@ -127,11 +126,6 @@ public class OidcAuthorizationCodeReactiveAuthenticationManager implements
 				throw new OAuth2AuthenticationException(oauth2Error, oauth2Error.toString());
 			}
 
-			if (!authorizationResponse.getRedirectUri().equals(authorizationRequest.getRedirectUri())) {
-				OAuth2Error oauth2Error = new OAuth2Error(INVALID_REDIRECT_URI_PARAMETER_ERROR_CODE);
-				throw new OAuth2AuthenticationException(oauth2Error, oauth2Error.toString());
-			}
-
 			OAuth2AuthorizationCodeGrantRequest authzRequest = new OAuth2AuthorizationCodeGrantRequest(
 					authorizationCodeAuthentication.getClientRegistration(),
 					authorizationCodeAuthentication.getAuthorizationExchange());

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/authentication/OAuth2AuthorizationCodeAuthenticationProviderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -108,18 +108,6 @@ public class OAuth2AuthorizationCodeAuthenticationProviderTests {
 		}).isInstanceOf(OAuth2AuthorizationException.class).hasMessageContaining("invalid_state_parameter");
 	}
 
-	@Test
-	public void authenticateWhenAuthorizationResponseRedirectUriNotEqualAuthorizationRequestRedirectUriThenThrowOAuth2AuthorizationException() {
-		when(this.authorizationRequest.getRedirectUri()).thenReturn("https://example.com");
-		when(this.authorizationResponse.getRedirectUri()).thenReturn("https://example2.com");
-
-		assertThatThrownBy(() -> {
-			this.authenticationProvider.authenticate(
-					new OAuth2AuthorizationCodeAuthenticationToken(
-							this.clientRegistration, this.authorizationExchange));
-		}).isInstanceOf(OAuth2AuthorizationException.class).hasMessageContaining("invalid_redirect_uri_parameter");
-	}
-
 	@Test
 	public void authenticateWhenAuthorizationSuccessResponseThenExchangedForAccessToken() {
 		OAuth2AccessToken accessToken = mock(OAuth2AccessToken.class);

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/authentication/OAuth2AuthorizationCodeReactiveAuthenticationManagerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -80,13 +80,6 @@ public class OAuth2AuthorizationCodeReactiveAuthenticationManagerTests {
 				.isInstanceOf(OAuth2AuthorizationException.class);
 	}
 
-	@Test
-	public void authenticateWhenRedirectUriNotEqualThenOAuth2AuthorizationException() {
-		this.authorizationRequest.redirectUri("https://example.org/notequal");
-		assertThatCode(() -> authenticate())
-				.isInstanceOf(OAuth2AuthorizationException.class);
-	}
-
 	@Test
 	public void authenticateWhenValidThenSuccess() {
 		when(this.accessTokenResponseClient.getTokenResponse(any())).thenReturn(Mono.just(this.tokenResponse.build()));

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/authentication/OAuth2LoginAuthenticationProviderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -154,18 +154,6 @@ public class OAuth2LoginAuthenticationProviderTests {
 			new OAuth2LoginAuthenticationToken(this.clientRegistration, this.authorizationExchange));
 	}
 
-	@Test
-	public void authenticateWhenAuthorizationResponseRedirectUriNotEqualAuthorizationRequestRedirectUriThenThrowOAuth2AuthenticationException() {
-		this.exception.expect(OAuth2AuthenticationException.class);
-		this.exception.expectMessage(containsString("invalid_redirect_uri_parameter"));
-
-		when(this.authorizationRequest.getRedirectUri()).thenReturn("https://example.com");
-		when(this.authorizationResponse.getRedirectUri()).thenReturn("https://example2.com");
-
-		this.authenticationProvider.authenticate(
-			new OAuth2LoginAuthenticationToken(this.clientRegistration, this.authorizationExchange));
-	}
-
 	@Test
 	public void authenticateWhenLoginSuccessThenReturnAuthentication() {
 		OAuth2AccessTokenResponse accessTokenResponse = this.accessTokenSuccessResponse();

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/oidc/authentication/OidcAuthorizationCodeAuthenticationProviderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -169,18 +169,6 @@ public class OidcAuthorizationCodeAuthenticationProviderTests {
 			new OAuth2LoginAuthenticationToken(this.clientRegistration, this.authorizationExchange));
 	}
 
-	@Test
-	public void authenticateWhenAuthorizationResponseRedirectUriNotEqualAuthorizationRequestRedirectUriThenThrowOAuth2AuthenticationException() {
-		this.exception.expect(OAuth2AuthenticationException.class);
-		this.exception.expectMessage(containsString("invalid_redirect_uri_parameter"));
-
-		when(this.authorizationRequest.getRedirectUri()).thenReturn("https://example1.com");
-		when(this.authorizationResponse.getRedirectUri()).thenReturn("https://example2.com");
-
-		this.authenticationProvider.authenticate(
-			new OAuth2LoginAuthenticationToken(this.clientRegistration, this.authorizationExchange));
-	}
-
 	@Test
 	public void authenticateWhenTokenResponseDoesNotContainIdTokenThenThrowOAuth2AuthenticationException() {
 		this.exception.expect(OAuth2AuthenticationException.class);

samples/boot/oauth2login/src/integration-test/java/org/springframework/security/samples/OAuth2LoginApplicationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -255,42 +255,6 @@ public class OAuth2LoginApplicationTests {
 		assertThat(errorElement.asText()).contains("authorization_request_not_found");
 	}
 
-	@Test
-	public void requestAuthorizationCodeGrantWhenInvalidRedirectUriThenDisplayLoginPageWithError() throws Exception {
-		HtmlPage page = this.webClient.getPage("/");
-		URL loginPageUrl = page.getBaseURL();
-		URL loginErrorPageUrl = new URL(loginPageUrl.toString() + "?error");
-
-		ClientRegistration clientRegistration = this.clientRegistrationRepository.findByRegistrationId("google");
-
-		HtmlAnchor clientAnchorElement = this.getClientAnchorElement(page, clientRegistration);
-		assertThat(clientAnchorElement).isNotNull();
-
-		WebResponse response = this.followLinkDisableRedirects(clientAnchorElement);
-
-		UriComponents authorizeRequestUriComponents = UriComponentsBuilder.fromUri(
-				URI.create(response.getResponseHeaderValue("Location"))).build();
-
-		Map<String, String> params = authorizeRequestUriComponents.getQueryParams().toSingleValueMap();
-		String code = "auth-code";
-		String state = URLDecoder.decode(params.get(OAuth2ParameterNames.STATE), "UTF-8");
-		String redirectUri = URLDecoder.decode(params.get(OAuth2ParameterNames.REDIRECT_URI), "UTF-8");
-		redirectUri += "-invalid";
-
-		String authorizationResponseUri =
-				UriComponentsBuilder.fromHttpUrl(redirectUri)
-						.queryParam(OAuth2ParameterNames.CODE, code)
-						.queryParam(OAuth2ParameterNames.STATE, state)
-						.build().encode().toUriString();
-
-		page = this.webClient.getPage(new URL(authorizationResponseUri));
-		assertThat(page.getBaseURL()).isEqualTo(loginErrorPageUrl);
-
-		HtmlElement errorElement = page.getBody().getFirstByXPath("div");
-		assertThat(errorElement).isNotNull();
-		assertThat(errorElement.asText()).contains("invalid_redirect_uri_parameter");
-	}
-
 	private void assertLoginPage(HtmlPage page) throws Exception {
 		assertThat(page.getTitleText()).isEqualTo("Please sign in");