FELIX-6849 : Apply org.eclipse.jetty.UriComplianceMode to redirect URIs

http/itest/pom.xml

@@ -33,7 +33,7 @@
     <properties>
         <felix.java.version>17</felix.java.version>
         <http.servlet.api.version>6.1.0</http.servlet.api.version>
-        <http.jetty.version>2.0.1-SNAPSHOT</http.jetty.version>
+        <http.jetty.version>2.0.3-SNAPSHOT</http.jetty.version>
         <http.jetty.id>org.apache.felix.http.jetty12</http.jetty.id>
         <pax.exam.version>4.13.3</pax.exam.version>
         <pax.url.aether.version>2.6.14</pax.url.aether.version>
@@ -45,7 +45,7 @@
             <properties>
                 <felix.java.version>11</felix.java.version>
                 <http.servlet.api.version>6.1.0</http.servlet.api.version>
-                <http.jetty.version>5.2.3-SNAPSHOT</http.jetty.version>
+                <http.jetty.version>5.2.5-SNAPSHOT</http.jetty.version>
                 <http.jetty.id>org.apache.felix.http.jetty</http.jetty.id>
             </properties>
         </profile>

http/jetty12/src/main/java/org/apache/felix/http/jetty/internal/JettyService.java

@@ -788,6 +788,11 @@ private void configureHttpConnectionFactory(HttpConnectionFactory connFactory)
             try {
                 UriCompliance compliance = UriCompliance.valueOf(uriComplianceMode);
                 config.setUriCompliance(compliance);
+                // Apply the same compliance to redirect URIs (Location header). Since Jetty 12.1
+                // this defaults to UriCompliance.DEFAULT_REDIRECT, which - like the request URI
+                // default - rejects ambiguous encodings such as %2F. Differentiating the two makes
+                // no sense: if a deployment opts into a compliance mode it should apply end-to-end.
+                config.setRedirectUriCompliance(compliance);
 
                 if (LEGACY.equals(compliance) || UNSAFE.equals(compliance) || UNAMBIGUOUS.equals(compliance)) {
                     // See https://github.com/jetty/jetty.project/issues/11448#issuecomment-1969206031

http/jetty12/src/test/java/org/apache/felix/http/jetty/it/JettyUriComplianceModeDefaultIT.java

@@ -115,9 +115,32 @@ public void testUriCompliance() throws Exception {
         }
     }
 
+    @Test
+    public void testRedirectUriCompliance() throws Exception {
+        try (HttpClient httpClient = new HttpClient()) {
+            httpClient.setFollowRedirects(false);
+            httpClient.start();
+            Object value = bundleContext.getServiceReference(HttpService.class).getProperty("org.osgi.service.http.port");
+            int httpPort = Integer.parseInt((String) value);
+
+            URI destUriRedirect = new URI(String.format("http://localhost:%d/endpoint/redirect", httpPort));
+
+            // The endpoint issues a redirect whose Location contains an ambiguous %2F.
+            // With the default redirect compliance (DEFAULT_REDIRECT) this is rejected,
+            // surfacing as an internal server error rather than a 302.
+            ContentResponse response = httpClient.GET(destUriRedirect);
+            assertEquals(500, response.getStatus());
+        }
+    }
+
      static final class UriComplianceEndpoint extends HttpServlet {
         @Override
         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+            if (req.getRequestURI().contains("redirect")) {
+                // Location deliberately contains an ambiguous encoded separator (%2F)
+                resp.sendRedirect("/endpoint/redirected%2Ftarget");
+                return;
+            }
             resp.setStatus(200);
             resp.getWriter().write("OK");
         }

http/jetty12/src/test/java/org/apache/felix/http/jetty/it/JettyUriComplianceModeLegacyIT.java

@@ -64,4 +64,23 @@ public void testUriCompliance() throws Exception {
             assertEquals("OK", response2.getContentAsString());
         }
     }
+
+    @Test
+    @Override
+    public void testRedirectUriCompliance() throws Exception {
+        try (HttpClient httpClient = new HttpClient()) {
+            httpClient.setFollowRedirects(false);
+            httpClient.start();
+            Object value = bundleContext.getServiceReference(HttpService.class).getProperty("org.osgi.service.http.port");
+            int httpPort = Integer.parseInt((String) value);
+
+            URI destUriRedirect = new URI(String.format("http://localhost:%d/endpoint/redirect", httpPort));
+
+            // With LEGACY compliance the ambiguous %2F in the Location header is allowed,
+            // so the redirect is emitted normally instead of being rejected.
+            ContentResponse response = httpClient.GET(destUriRedirect);
+            assertEquals(302, response.getStatus());
+            assertEquals("/endpoint/redirected%2Ftarget", response.getHeaders().get("Location"));
+        }
+    }
 }