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sjohnrsjohnr
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Polish gh-16214
This commit applies the following changes: * Added local Content-Security-Policy with script-src nonce directive * Removed form-redirect.js and associated changes * Renamed to FormPostRedirectStrategy * Removed HtmlUtils usage * Moved to same package as DefaultRedirectStrategy
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‎docs/modules/ROOT/pages/servlet/oauth2/login/logout.adoc

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@@ -125,7 +125,7 @@ If used, the application's base URL, such as `https://app.example.org`, replaces
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[NOTE]
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====
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By default, `OidcClientInitiatedLogoutSuccessHandler` redirects to the logout URL using a standard HTTP redirect with the `GET` method.
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To perform the logout using a `POST` request, set the redirect strategy to `FormRedirectStrategy`, for example with `OidcClientInitiatedLogoutSuccessHandler.setRedirectStrategy(new FormRedirectStrategy())`.
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To perform the logout using a `POST` request, set the redirect strategy to `FormPostRedirectStrategy`, for example with `OidcClientInitiatedLogoutSuccessHandler.setRedirectStrategy(new FormPostRedirectStrategy())`.
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====
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[[configure-provider-initiated-oidc-logout]]

‎web/src/main/java/org/springframework/security/web/FormPostRedirectStrategy.java

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@@ -0,0 +1,116 @@
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/*
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* Copyright 2002-2025 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.security.web;
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import java.io.IOException;
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import java.util.Base64;
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import java.util.List;
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import java.util.Map.Entry;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.security.crypto.keygen.Base64StringKeyGenerator;
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import org.springframework.security.crypto.keygen.StringKeyGenerator;
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import org.springframework.web.util.HtmlUtils;
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import org.springframework.web.util.UriComponentsBuilder;
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/**
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* Redirect using an auto-submitting HTML form using the POST method. All query params
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* provided in the URL are changed to inputs in the form so they are submitted as POST
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* data instead of query string data.
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*
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* @author Craig Andrews
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* @author Steve Riesenberg
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* @since 6.5
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*/
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public final class FormPostRedirectStrategy implements RedirectStrategy {
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private static final String CONTENT_SECURITY_POLICY_HEADER = "Content-Security-Policy";
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private static final String REDIRECT_PAGE_TEMPLATE = """
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<meta name="description" content="">
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<meta name="author" content="">
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<title>Redirect</title>
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</head>
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<body>
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<form id="redirect-form" method="POST" action="{{action}}">
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{{params}}
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<noscript>
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<p>JavaScript is not enabled for this page.</p>
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<button type="submit">Click to continue</button>
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</noscript>
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</form>
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<script nonce="{{nonce}}">
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document.getElementById("redirect-form").submit();
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</script>
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</body>
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</html>
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""";
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private static final String HIDDEN_INPUT_TEMPLATE = """
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<input name="{{name}}" type="hidden" value="{{value}}" />
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""";
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private static final StringKeyGenerator DEFAULT_NONCE_GENERATOR = new Base64StringKeyGenerator(
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Base64.getUrlEncoder().withoutPadding(), 96);
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@Override
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public void sendRedirect(final HttpServletRequest request, final HttpServletResponse response, final String url)
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throws IOException {
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final UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromUriString(url);
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final StringBuilder hiddenInputsHtmlBuilder = new StringBuilder();
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for (final Entry<String, List<String>> entry : uriComponentsBuilder.build().getQueryParams().entrySet()) {
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final String name = entry.getKey();
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for (final String value : entry.getValue()) {
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// @formatter:off
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final String hiddenInput = HIDDEN_INPUT_TEMPLATE
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.replace("{{name}}", HtmlUtils.htmlEscape(name))
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.replace("{{value}}", HtmlUtils.htmlEscape(value));
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// @formatter:on
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hiddenInputsHtmlBuilder.append(hiddenInput.trim());
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}
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}
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// Create the script-src policy directive for the Content-Security-Policy header
98+
final String nonce = DEFAULT_NONCE_GENERATOR.generateKey();
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final String policyDirective = "script-src 'nonce-%s'".formatted(nonce);
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// @formatter:off
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final String html = REDIRECT_PAGE_TEMPLATE
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// Clear the query string as we don't want that to be part of the form action URL
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.replace("{{action}}", HtmlUtils.htmlEscape(uriComponentsBuilder.query(null).build().toUriString()))
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.replace("{{params}}", hiddenInputsHtmlBuilder.toString())
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.replace("{{nonce}}", HtmlUtils.htmlEscape(nonce));
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// @formatter:on
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response.setStatus(HttpStatus.OK.value());
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response.setContentType(MediaType.TEXT_HTML_VALUE);
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response.setHeader(CONTENT_SECURITY_POLICY_HEADER, policyDirective);
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response.getWriter().write(html);
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response.getWriter().flush();
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}
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}

‎web/src/main/java/org/springframework/security/web/aot/hint/WebMvcSecurityRuntimeHints.java

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@@ -54,11 +54,6 @@ public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
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hints.resources().registerResource(webauthnJavascript);
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}
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57-
ClassPathResource redirect = new ClassPathResource("org/springframework/security/form-redirect.js");
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if (redirect.exists()) {
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hints.resources().registerResource(redirect);
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}
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}
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}

‎web/src/main/java/org/springframework/security/web/authentication/ui/DefaultResourcesFilter.java

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@@ -111,20 +111,4 @@ public static DefaultResourcesFilter webauthn() {
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new MediaType("text", "javascript", StandardCharsets.UTF_8));
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}
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/**
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* Create an instance of {@link DefaultResourcesFilter} serving Spring Security's
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* default webauthn javascript.
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* <p>
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* The created {@link DefaultResourcesFilter} matches requests
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* {@code HTTP GET /form-redirect.js}, and returns the default webauthn javascript at
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* {@code org/springframework/security/form-redirect.js} with content-type
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* {@code text/javascript;charset=UTF-8}.
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* @return -
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*/
124-
public static DefaultResourcesFilter formRedirectJavascript() {
125-
return new DefaultResourcesFilter(AntPathRequestMatcher.antMatcher(HttpMethod.GET, "/form-redirect.js"),
126-
new ClassPathResource("org/springframework/security/form-redirect.js"),
127-
new MediaType("text", "javascript", StandardCharsets.UTF_8));
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}
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}

‎web/src/main/java/org/springframework/security/web/server/ui/DefaultResourcesWebFilter.java

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@@ -98,21 +98,4 @@ public static DefaultResourcesWebFilter css() {
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new MediaType("text", "css", StandardCharsets.UTF_8));
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}
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101-
/**
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* Create an instance of {@link DefaultResourcesWebFilter} serving Spring Security's
103-
* form redirect javascript.
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* <p>
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* The created {@link DefaultResourcesFilter} matches requests
106-
* {@code HTTP GET /form-redirect.js}, and returns the default javascript at
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* {@code org/springframework/security/form-redirect.js} with content-type
108-
* {@code text/javascript;charset=UTF-8}.
109-
* @return -
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*/
111-
public static DefaultResourcesWebFilter formRedirectJavascript() {
112-
return new DefaultResourcesWebFilter(
113-
new PathPatternParserServerWebExchangeMatcher("/form-redirect.js", HttpMethod.GET),
114-
new ClassPathResource("org/springframework/security/form-redirect.js"),
115-
new MediaType("text", "javascript", StandardCharsets.UTF_8));
116-
}
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}

‎web/src/main/java/org/springframework/security/web/server/ui/FormRedirectStrategy.java

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This file was deleted.

‎web/src/main/resources/org/springframework/security/form-redirect.js

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This file was deleted.

‎web/src/test/java/org/springframework/security/web/server/ui/FormRedirectStrategyTests.java renamed to ‎web/src/test/java/org/springframework/security/web/FormPostRedirectStrategyTests.java

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@@ -1,5 +1,5 @@
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/*
2-
* Copyright 2002-2023 the original author or authors.
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* Copyright 2002-2025 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
55
* you may not use this file except in compliance with the License.
@@ -14,10 +14,11 @@
1414
* limitations under the License.
1515
*/
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17-
package org.springframework.security.web.server.ui;
17+
package org.springframework.security.web;
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1919
import java.io.IOException;
2020

21+
import org.assertj.core.api.ThrowingConsumer;
2122
import org.junit.jupiter.api.BeforeEach;
2223
import org.junit.jupiter.api.Test;
2324

@@ -30,17 +31,19 @@
3031

3132
import static org.assertj.core.api.Assertions.assertThat;
3233

33-
public class FormRedirectStrategyTests {
34+
public class FormPostRedirectStrategyTests {
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35-
private FormRedirectStrategy formRedirectStrategy;
36+
private static final String POLICY_DIRECTIVE_PATTERN = "script-src 'nonce-(.+)'";
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38+
private FormPostRedirectStrategy redirectStrategy;
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3740
private MockHttpServletRequest request;
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3942
private MockHttpServletResponse response;
4043

4144
@BeforeEach
4245
public void beforeEach() {
43-
this.formRedirectStrategy = new FormRedirectStrategy();
46+
this.redirectStrategy = new FormPostRedirectStrategy();
4447
final MockServletContext mockServletContext = new MockServletContext();
4548
mockServletContext.setContextPath("/contextPath");
4649
// the request URL doesn't matter
@@ -50,39 +53,43 @@ public void beforeEach() {
5053

5154
@Test
5255
public void absoluteUrlNoParametersRedirect() throws IOException {
53-
this.formRedirectStrategy.sendRedirect(this.request, this.response, "https://example.com");
56+
this.redirectStrategy.sendRedirect(this.request, this.response, "https://example.com");
5457
assertThat(this.response.getStatus()).isEqualTo(HttpStatus.OK.value());
5558
assertThat(this.response.getContentType()).isEqualTo(MediaType.TEXT_HTML_VALUE);
5659
assertThat(this.response.getContentAsString()).contains("action=\"https://example.com\"");
60+
assertThat(this.response).satisfies(hasScriptSrcNonce());
5761
}
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5963
@Test
6064
public void rootRelativeUrlNoParametersRedirect() throws IOException {
61-
this.formRedirectStrategy.sendRedirect(this.request, this.response, "/test");
65+
this.redirectStrategy.sendRedirect(this.request, this.response, "/test");
6266
assertThat(this.response.getStatus()).isEqualTo(HttpStatus.OK.value());
6367
assertThat(this.response.getContentType()).isEqualTo(MediaType.TEXT_HTML_VALUE);
6468
assertThat(this.response.getContentAsString()).contains("action=\"/test\"");
69+
assertThat(this.response).satisfies(hasScriptSrcNonce());
6570
}
6671

6772
@Test
6873
public void relativeUrlNoParametersRedirect() throws IOException {
69-
this.formRedirectStrategy.sendRedirect(this.request, this.response, "test");
74+
this.redirectStrategy.sendRedirect(this.request, this.response, "test");
7075
assertThat(this.response.getStatus()).isEqualTo(HttpStatus.OK.value());
7176
assertThat(this.response.getContentType()).isEqualTo(MediaType.TEXT_HTML_VALUE);
7277
assertThat(this.response.getContentAsString()).contains("action=\"test\"");
78+
assertThat(this.response).satisfies(hasScriptSrcNonce());
7379
}
7480

7581
@Test
7682
public void absoluteUrlWithFragmentRedirect() throws IOException {
77-
this.formRedirectStrategy.sendRedirect(this.request, this.response, "https://example.com/path#fragment");
83+
this.redirectStrategy.sendRedirect(this.request, this.response, "https://example.com/path#fragment");
7884
assertThat(this.response.getStatus()).isEqualTo(HttpStatus.OK.value());
7985
assertThat(this.response.getContentType()).isEqualTo(MediaType.TEXT_HTML_VALUE);
8086
assertThat(this.response.getContentAsString()).contains("action=\"https://example.com/path#fragment\"");
87+
assertThat(this.response).satisfies(hasScriptSrcNonce());
8188
}
8289

8390
@Test
8491
public void absoluteUrlWithQueryParamsRedirect() throws IOException {
85-
this.formRedirectStrategy.sendRedirect(this.request, this.response,
92+
this.redirectStrategy.sendRedirect(this.request, this.response,
8693
"https://example.com/path?param1=one&param2=two#fragment");
8794
assertThat(this.response.getStatus()).isEqualTo(HttpStatus.OK.value());
8895
assertThat(this.response.getContentType()).isEqualTo(MediaType.TEXT_HTML_VALUE);
@@ -91,6 +98,18 @@ public void absoluteUrlWithQueryParamsRedirect() throws IOException {
9198
.contains("<input name=\"param1\" type=\"hidden\" value=\"one\" />");
9299
assertThat(this.response.getContentAsString())
93100
.contains("<input name=\"param2\" type=\"hidden\" value=\"two\" />");
101+
assertThat(this.response).satisfies(hasScriptSrcNonce());
102+
}
103+
104+
private ThrowingConsumer<MockHttpServletResponse> hasScriptSrcNonce() {
105+
return (response) -> {
106+
final String policyDirective = response.getHeader("Content-Security-Policy");
107+
assertThat(policyDirective).isNotEmpty();
108+
assertThat(policyDirective).matches(POLICY_DIRECTIVE_PATTERN);
109+
110+
final String nonce = policyDirective.replaceFirst(POLICY_DIRECTIVE_PATTERN, "$1");
111+
assertThat(response.getContentAsString()).contains("<script nonce=\"%s\">".formatted(nonce));
112+
};
94113
}
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96115
}

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