HADOOP-13707. Skip authorization for anonymous user to access Hadoop

web interface in non-secure environment.  (Yuanbo Liu via eyang)

(cherry picked from commit dc308e98b9)
With Addendum patch

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ConfServlet.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.conf;
 import java.io.IOException;
 import java.io.Writer;
 
+import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
@@ -56,7 +57,12 @@ public class ConfServlet extends HttpServlet {
   public void doGet(HttpServletRequest request, HttpServletResponse response)
       throws ServletException, IOException {
 
-    if (!HttpServer2.isInstrumentationAccessAllowed(getServletContext(),
+    // If user is a static user and auth Type is null, that means
+    // there is a non-security environment and no need authorization,
+    // otherwise, do the authorization.
+    final ServletContext servletContext = getServletContext();
+    if (!HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) &&
+        !HttpServer2.isInstrumentationAccessAllowed(servletContext,
                                                    request, response)) {
       return;
     }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/AdminAuthorizedServlet.java

@@ -19,6 +19,7 @@ package org.apache.hadoop.http;
 
 import java.io.IOException;
 
+import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -36,8 +37,12 @@ public class AdminAuthorizedServlet extends DefaultServlet {
   @Override
   protected void doGet(HttpServletRequest request, HttpServletResponse response)
       throws ServletException, IOException {
-    // Do the authorization
+    // If user is a static user and auth Type is null, that means
-    if (HttpServer2.hasAdministratorAccess(getServletContext(), request,
+    // there is a non-security environment and no need authorization,
+    // otherwise, do the authorization.
+    final ServletContext servletContext = getServletContext();
+    if (HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) ||
+        HttpServer2.hasAdministratorAccess(servletContext, request,
         response)) {
       // Authorization is done. Just call super.
       super.doGet(request, response);

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java

@@ -94,6 +94,8 @@ import org.mortbay.util.MultiException;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.sun.jersey.spi.container.servlet.ServletContainer;
+import static org.apache.hadoop.fs.CommonConfigurationKeys.DEFAULT_HADOOP_HTTP_STATIC_USER;
+import static org.apache.hadoop.fs.CommonConfigurationKeys.HADOOP_HTTP_STATIC_USER;
 
 /**
  * Create a Jetty embedded server to answer http requests. The primary goal is
@@ -1084,6 +1086,24 @@ public final class HttpServer2 implements FilterContainer {
     return sb.toString();
   }
 
+  /**
+   * check whether user is static and unauthenticated, if the
+   * answer is TRUE, that means http sever is in non-security
+   * environment.
+   * @param servletContext the servlet context.
+   * @param request the servlet request.
+   * @return TRUE/FALSE based on the logic described above.
+   */
+  public static boolean isStaticUserAndNoneAuthType(
+      ServletContext servletContext, HttpServletRequest request) {
+    Configuration conf =
+        (Configuration) servletContext.getAttribute(CONF_CONTEXT_ATTRIBUTE);
+    final String authType = request.getAuthType();
+    final String staticUser = conf.get(HADOOP_HTTP_STATIC_USER,
+        DEFAULT_HADOOP_HTTP_STATIC_USER);
+    return authType == null && staticUser.equals(request.getRemoteUser());
+  }
+
   /**
    * Checks the user has privileges to access to instrumentation servlets.
    * <p/>
@@ -1182,7 +1202,12 @@ public final class HttpServer2 implements FilterContainer {
     @Override
     public void doGet(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException {
-      if (!HttpServer2.isInstrumentationAccessAllowed(getServletContext(),
+      // If user is a static user and auth Type is null, that means
+      // there is a non-security environment and no need authorization,
+      // otherwise, do the authorization.
+      final ServletContext servletContext = getServletContext();
+      if (!HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) &&
+          !HttpServer2.isInstrumentationAccessAllowed(servletContext,
               request, response)) {
         return;
       }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/jmx/JMXJsonServlet.java

@@ -38,6 +38,7 @@ import javax.management.RuntimeMBeanException;
 import javax.management.openmbean.CompositeData;
 import javax.management.openmbean.CompositeType;
 import javax.management.openmbean.TabularData;
+import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
@@ -166,7 +167,12 @@ public class JMXJsonServlet extends HttpServlet {
     String jsonpcb = null;
     PrintWriter writer = null;
     try {
-      if (!isInstrumentationAccessAllowed(request, response)) {
+      // If user is a static user and auth Type is null, that means
+      // there is a non-security environment and no need authorization,
+      // otherwise, do the authorization.
+      final ServletContext servletContext = getServletContext();
+      if (!HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) &&
+          !isInstrumentationAccessAllowed(request, response)) {
         return;
       }
       

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/log/LogLevel.java

@@ -323,9 +323,13 @@ public class LogLevel {
     public void doGet(HttpServletRequest request, HttpServletResponse response
         ) throws ServletException, IOException {
 
-      // Do the authorization
+      // If user is a static user and auth Type is null, that means
-      if (!HttpServer2.hasAdministratorAccess(getServletContext(), request,
+      // there is a non-security environment and no need authorization,
-          response)) {
+      // otherwise, do the authorization.
+      final ServletContext servletContext = getServletContext();
+      if (!HttpServer2.isStaticUserAndNoneAuthType(servletContext, request) &&
+          !HttpServer2.hasAdministratorAccess(servletContext,
+              request, response)) {
         return;
       }
 

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestHttpServer.java

@@ -66,6 +66,9 @@ import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 
+import static org.apache.hadoop.fs.CommonConfigurationKeys.DEFAULT_HADOOP_HTTP_STATIC_USER;
+import static org.apache.hadoop.fs.CommonConfigurationKeys.HADOOP_HTTP_STATIC_USER;
+
 public class TestHttpServer extends HttpServerFunctionalTest {
   static final Log LOG = LogFactory.getLog(TestHttpServer.class);
   private static HttpServer2 server;
@@ -453,7 +456,7 @@ public class TestHttpServer extends HttpServerFunctionalTest {
     String serverURL = "http://"
         + NetUtils.getHostPortString(myServer.getConnectorAddress(0)) + "/";
     for (String servlet : new String[] { "conf", "logs", "stacks",
-        "logLevel", "metrics" }) {
+        "logLevel", "metrics", "jmx" }) {
       for (String user : new String[] { "userA", "userB", "userC", "userD" }) {
         assertEquals(HttpURLConnection.HTTP_OK, getHttpStatusCode(serverURL
             + servlet, user));
@@ -461,6 +464,18 @@ public class TestHttpServer extends HttpServerFunctionalTest {
       assertEquals(HttpURLConnection.HTTP_FORBIDDEN, getHttpStatusCode(
           serverURL + servlet, "userE"));
     }
+
+    // hadoop.security.authorization is set as true while
+    // hadoop.http.authentication.type's value is `simple`(default value)
+    // in this case, static user has administrator access
+    final String staticUser = conf.get(HADOOP_HTTP_STATIC_USER,
+        DEFAULT_HADOOP_HTTP_STATIC_USER);
+    for (String servlet : new String[] {"conf", "logs", "stacks",
+        "logLevel", "jmx"}) {
+      assertEquals(HttpURLConnection.HTTP_OK, getHttpStatusCode(
+          serverURL + servlet, staticUser));
+    }
+
     myServer.stop();
   }