Copilot commented on code in PR #19812: URL: https://github.com/apache/druid/pull/19812#discussion_r3686687362
########## server/src/test/java/org/apache/druid/server/http/RedirectFilterTest.java: ########## @@ -0,0 +1,131 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.druid.server.http; + +import org.junit.Before; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.mockito.Mock; +import org.mockito.Mockito; +import org.mockito.junit.MockitoJUnitRunner; + +import javax.servlet.FilterChain; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import java.net.URI; +import java.net.URL; +import java.net.URLConnection; +import java.net.URLStreamHandler; + +@RunWith(MockitoJUnitRunner.class) +public class RedirectFilterTest +{ + private static final String REQUEST_URI = "/druid/coordinator/v1/loadstatus"; + private static final String QUERY_STRING = "simple=true"; + + @Mock + private RedirectInfo redirectInfo; + @Mock + private HttpServletRequest request; + @Mock + private HttpServletResponse response; + @Mock + private FilterChain filterChain; + + private RedirectFilter redirectFilter; + + @Before + public void setUp() + { + redirectFilter = new RedirectFilter(redirectInfo); + Mockito.when(request.getRequestURI()).thenReturn(REQUEST_URI); + Mockito.when(request.getQueryString()).thenReturn(QUERY_STRING); + Mockito.when(redirectInfo.doLocal(REQUEST_URI)).thenReturn(false); + } + + @Test + public void testRedirect() throws Exception + { + final String location = "https://leader.example:8081"; + REQUEST_URI + "?" + QUERY_STRING + "#result"; + Mockito.when(redirectInfo.getRedirectURL(QUERY_STRING, REQUEST_URI)).thenReturn(URI.create(location).toURL()); + + redirectFilter.doFilter(request, response, filterChain); + + Mockito.verify(response).setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT); + Mockito.verify(response).setHeader("Location", location); + Mockito.verifyNoInteractions(filterChain); + } + + @Test + public void testRedirectPreservesEncodedNewlines() throws Exception + { + final String location = "https://leader.example/path%0D%0Avalue?query=%0a";; + Mockito.when(redirectInfo.getRedirectURL(QUERY_STRING, REQUEST_URI)).thenReturn(URI.create(location).toURL()); + + redirectFilter.doFilter(request, response, filterChain); + + Mockito.verify(response).setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT); + Mockito.verify(response).setHeader("Location", location); + } + + @Test + public void testRedirectRejectsCarriageReturn() throws Exception + { + assertInvalidRedirect("https://leader.example/path\rInjected: value"); + } + + @Test + public void testRedirectRejectsLineFeed() throws Exception + { + assertInvalidRedirect("https://leader.example/path\nInjected: value"); + } + + private void assertInvalidRedirect(String location) throws Exception + { + Mockito.when(redirectInfo.getRedirectURL(QUERY_STRING, REQUEST_URI)).thenReturn(urlWithExternalForm(location)); + + redirectFilter.doFilter(request, response, filterChain); + + Mockito.verify(response).sendError(HttpServletResponse.SC_BAD_REQUEST); + Mockito.verify(response, Mockito.never()).setStatus(Mockito.anyInt()); + Mockito.verify(response, Mockito.never()).setHeader(Mockito.anyString(), Mockito.anyString()); + } Review Comment: For invalid redirect targets, the test currently verifies the error response but does not assert that the filter chain is not invoked. Adding this assertion helps ensure the request is not processed further after a 400 is sent. ########## server/src/test/java/org/apache/druid/server/http/RedirectFilterTest.java: ########## @@ -0,0 +1,131 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.druid.server.http; + +import org.junit.Before; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.mockito.Mock; +import org.mockito.Mockito; +import org.mockito.junit.MockitoJUnitRunner; + +import javax.servlet.FilterChain; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import java.net.URI; +import java.net.URL; +import java.net.URLConnection; +import java.net.URLStreamHandler; + +@RunWith(MockitoJUnitRunner.class) +public class RedirectFilterTest +{ + private static final String REQUEST_URI = "/druid/coordinator/v1/loadstatus"; + private static final String QUERY_STRING = "simple=true"; + + @Mock + private RedirectInfo redirectInfo; + @Mock + private HttpServletRequest request; + @Mock + private HttpServletResponse response; + @Mock + private FilterChain filterChain; + + private RedirectFilter redirectFilter; + + @Before + public void setUp() + { + redirectFilter = new RedirectFilter(redirectInfo); + Mockito.when(request.getRequestURI()).thenReturn(REQUEST_URI); + Mockito.when(request.getQueryString()).thenReturn(QUERY_STRING); + Mockito.when(redirectInfo.doLocal(REQUEST_URI)).thenReturn(false); + } + + @Test + public void testRedirect() throws Exception + { + final String location = "https://leader.example:8081"; + REQUEST_URI + "?" + QUERY_STRING + "#result"; + Mockito.when(redirectInfo.getRedirectURL(QUERY_STRING, REQUEST_URI)).thenReturn(URI.create(location).toURL()); + + redirectFilter.doFilter(request, response, filterChain); + + Mockito.verify(response).setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT); + Mockito.verify(response).setHeader("Location", location); + Mockito.verifyNoInteractions(filterChain); + } + + @Test + public void testRedirectPreservesEncodedNewlines() throws Exception + { + final String location = "https://leader.example/path%0D%0Avalue?query=%0a";; + Mockito.when(redirectInfo.getRedirectURL(QUERY_STRING, REQUEST_URI)).thenReturn(URI.create(location).toURL()); + + redirectFilter.doFilter(request, response, filterChain); + + Mockito.verify(response).setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT); + Mockito.verify(response).setHeader("Location", location); + } Review Comment: This test doesn’t assert that the filter chain is not invoked for redirect responses (unlike `testRedirect`). Adding `verifyNoInteractions(filterChain)` makes the test catch regressions where the request might be forwarded after setting the redirect status/header. ########## server/src/main/java/org/apache/druid/server/http/RedirectFilter.java: ########## @@ -72,17 +72,23 @@ public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) if (redirectInfo.doLocal(request.getRequestURI())) { chain.doFilter(request, response); } else { - URL url = redirectInfo.getRedirectURL(request.getQueryString(), request.getRequestURI()); - log.debug("Forwarding request to [%s]", url); - + final URL url = redirectInfo.getRedirectURL(request.getQueryString(), request.getRequestURI()); if (url == null) { // We apparently have nothing to redirect to, so let's do a Service Unavailable response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE); return; } + final String location = url.toString(); + final String sanitizedLocation = location.replace('\r', ' ').replace('\n', ' '); + if (!location.equals(sanitizedLocation)) { + response.sendError(HttpServletResponse.SC_BAD_REQUEST); Review Comment: The CR/LF validation currently allocates a second string via `replace` just to detect newlines, and then uses `sanitizedLocation` even though it is guaranteed to equal `location` on the success path. This can be simpler and cheaper by directly checking for `\r`/`\n` and then setting the header to the original `location`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
