HADOOP-11754. RM fails to start in non-secure mode due to authentication filter failure. Contributed by Haohui Mai.

hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/server/AuthenticationFilter.java

@@ -25,6 +25,7 @@ import org.slf4j.LoggerFactory;
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
+import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
@@ -183,8 +184,6 @@ public class AuthenticationFilter implements Filter {
   private Signer signer;
   private SignerSecretProvider secretProvider;
   private AuthenticationHandler authHandler;
-  private boolean randomSecret;
-  private boolean customSecretProvider;
   private long validity;
   private String cookieDomain;
   private String cookiePath;
@@ -226,7 +225,6 @@ public class AuthenticationFilter implements Filter {
 
     initializeAuthHandler(authHandlerClassName, filterConfig);
 
-
     cookieDomain = config.getProperty(COOKIE_DOMAIN, null);
     cookiePath = config.getProperty(COOKIE_PATH, null);
   }
@@ -237,11 +235,8 @@ public class AuthenticationFilter implements Filter {
       Class<?> klass = Thread.currentThread().getContextClassLoader().loadClass(authHandlerClassName);
       authHandler = (AuthenticationHandler) klass.newInstance();
       authHandler.init(config);
-    } catch (ClassNotFoundException ex) {
-      throw new ServletException(ex);
-    } catch (InstantiationException ex) {
-      throw new ServletException(ex);
-    } catch (IllegalAccessException ex) {
+    } catch (ClassNotFoundException | InstantiationException |
+        IllegalAccessException ex) {
       throw new ServletException(ex);
     }
   }
@@ -251,62 +246,59 @@ public class AuthenticationFilter implements Filter {
     secretProvider = (SignerSecretProvider) filterConfig.getServletContext().
         getAttribute(SIGNER_SECRET_PROVIDER_ATTRIBUTE);
     if (secretProvider == null) {
-      Class<? extends SignerSecretProvider> providerClass
-              = getProviderClass(config);
-      try {
-        secretProvider = providerClass.newInstance();
-      } catch (InstantiationException ex) {
-        throw new ServletException(ex);
-      } catch (IllegalAccessException ex) {
-        throw new ServletException(ex);
-      }
+      // As tomcat cannot specify the provider object in the configuration.
+      // It'll go into this path
       try {
-        secretProvider.init(config, filterConfig.getServletContext(), validity);
+        secretProvider = constructSecretProvider(
+            filterConfig.getServletContext(),
+            config, false);
       } catch (Exception ex) {
         throw new ServletException(ex);
       }
-    } else {
-      customSecretProvider = true;
     }
     signer = new Signer(secretProvider);
   }
 
-  @SuppressWarnings("unchecked")
-  private Class<? extends SignerSecretProvider> getProviderClass(Properties config)
-          throws ServletException {
-    String providerClassName;
-    String signerSecretProviderName
-            = config.getProperty(SIGNER_SECRET_PROVIDER, null);
-    // fallback to old behavior
-    if (signerSecretProviderName == null) {
-      String signatureSecretFile = config.getProperty(
-          SIGNATURE_SECRET_FILE, null);
-      // The precedence from high to low : file, random
-      if (signatureSecretFile != null) {
-        providerClassName = FileSignerSecretProvider.class.getName();
-      } else {
-        providerClassName = RandomSignerSecretProvider.class.getName();
-        randomSecret = true;
+  public static SignerSecretProvider constructSecretProvider(
+      ServletContext ctx, Properties config,
+      boolean disallowFallbackToRandomSecretProvider) throws Exception {
+    String name = config.getProperty(SIGNER_SECRET_PROVIDER, "file");
+    long validity = Long.parseLong(config.getProperty(AUTH_TOKEN_VALIDITY,
+                                                      "36000")) * 1000;
+
+    if (!disallowFallbackToRandomSecretProvider
+        && "file".equals(name)
+        && config.getProperty(SIGNATURE_SECRET_FILE) == null) {
+      name = "random";
+    }
+
+    SignerSecretProvider provider;
+    if ("file".equals(name)) {
+      provider = new FileSignerSecretProvider();
+      try {
+        provider.init(config, ctx, validity);
+      } catch (Exception e) {
+        if (!disallowFallbackToRandomSecretProvider) {
+          LOG.info("Unable to initialize FileSignerSecretProvider, " +
+                       "falling back to use random secrets.");
+          provider = new RandomSignerSecretProvider();
+          provider.init(config, ctx, validity);
+        } else {
+          throw e;
+        }
       }
+    } else if ("random".equals(name)) {
+      provider = new RandomSignerSecretProvider();
+      provider.init(config, ctx, validity);
+    } else if ("zookeeper".equals(name)) {
+      provider = new ZKSignerSecretProvider();
+      provider.init(config, ctx, validity);
     } else {
-      if ("random".equals(signerSecretProviderName)) {
-        providerClassName = RandomSignerSecretProvider.class.getName();
-        randomSecret = true;
-      } else if ("file".equals(signerSecretProviderName)) {
-        providerClassName = FileSignerSecretProvider.class.getName();
-      } else if ("zookeeper".equals(signerSecretProviderName)) {
-        providerClassName = ZKSignerSecretProvider.class.getName();
-      } else {
-        providerClassName = signerSecretProviderName;
-        customSecretProvider = true;
-      }
-    }
-    try {
-      return (Class<? extends SignerSecretProvider>) Thread.currentThread().
-              getContextClassLoader().loadClass(providerClassName);
-    } catch (ClassNotFoundException ex) {
-      throw new ServletException(ex);
+      provider = (SignerSecretProvider) Thread.currentThread().
+          getContextClassLoader().loadClass(name).newInstance();
+      provider.init(config, ctx, validity);
     }
+    return provider;
   }
 
   /**
@@ -335,7 +327,7 @@ public class AuthenticationFilter implements Filter {
    * @return if a random secret is being used.
    */
   protected boolean isRandomSecret() {
-    return randomSecret;
+    return secretProvider.getClass() == RandomSignerSecretProvider.class;
   }
 
   /**
@@ -344,7 +336,10 @@ public class AuthenticationFilter implements Filter {
    * @return if a custom implementation of a SignerSecretProvider is being used.
    */
   protected boolean isCustomSignerSecretProvider() {
-    return customSecretProvider;
+    Class<?> clazz = secretProvider.getClass();
+    return clazz != FileSignerSecretProvider.class && clazz !=
+        RandomSignerSecretProvider.class && clazz != ZKSignerSecretProvider
+        .class;
   }
 
   /**
@@ -385,9 +380,6 @@ public class AuthenticationFilter implements Filter {
       authHandler.destroy();
       authHandler = null;
     }
-    if (secretProvider != null) {
-      secretProvider.destroy();
-    }
   }
 
   /**

hadoop-common-project/hadoop-auth/src/test/java/org/apache/hadoop/security/authentication/server/TestAuthenticationFilter.java

@@ -18,7 +18,9 @@ import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
 import java.net.HttpCookie;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Properties;
@@ -151,8 +153,7 @@ public class TestAuthenticationFilter {
   }
 
   @Test
-  public void testInit() throws Exception {
-
+  public void testFallbackToRandomSecretProvider() throws Exception {
     // minimal configuration & simple auth handler (Pseudo)
     AuthenticationFilter filter = new AuthenticationFilter();
     try {
@@ -162,8 +163,8 @@ public class TestAuthenticationFilter {
           AuthenticationFilter.AUTH_TOKEN_VALIDITY)).thenReturn(
           (new Long(TOKEN_VALIDITY_SEC)).toString());
       Mockito.when(config.getInitParameterNames()).thenReturn(
-          new Vector<String>(Arrays.asList(AuthenticationFilter.AUTH_TYPE,
-                                           AuthenticationFilter.AUTH_TOKEN_VALIDITY)).elements());
+          new Vector<>(Arrays.asList(AuthenticationFilter.AUTH_TYPE,
+                                     AuthenticationFilter.AUTH_TOKEN_VALIDITY)).elements());
       ServletContext context = Mockito.mock(ServletContext.class);
       Mockito.when(context.getAttribute(AuthenticationFilter.SIGNER_SECRET_PROVIDER_ATTRIBUTE))
           .thenReturn(null);
@@ -178,16 +179,17 @@ public class TestAuthenticationFilter {
     } finally {
       filter.destroy();
     }
-
+  }
+  @Test
+  public void testInit() throws Exception {
     // custom secret as inline
-    filter = new AuthenticationFilter();
+    AuthenticationFilter filter = new AuthenticationFilter();
     try {
       FilterConfig config = Mockito.mock(FilterConfig.class);
       Mockito.when(config.getInitParameter(AuthenticationFilter.AUTH_TYPE)).thenReturn("simple");
-      Mockito.when(config.getInitParameter(AuthenticationFilter.SIGNATURE_SECRET)).thenReturn("secret");
       Mockito.when(config.getInitParameterNames()).thenReturn(
-        new Vector<String>(Arrays.asList(AuthenticationFilter.AUTH_TYPE,
-                                 AuthenticationFilter.SIGNATURE_SECRET)).elements());
+          new Vector<>(Arrays.asList(AuthenticationFilter.AUTH_TYPE))
+              .elements());
       ServletContext context = Mockito.mock(ServletContext.class);
       Mockito.when(context.getAttribute(
           AuthenticationFilter.SIGNER_SECRET_PROVIDER_ATTRIBUTE)).thenReturn(

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -762,6 +762,9 @@ Release 2.7.0 - UNRELEASED
     HADOOP-11761. Fix findbugs warnings in org.apache.hadoop.security
     .authentication. (Li Lu via wheat9)
 
+    HADOOP-11754. RM fails to start in non-secure mode due to authentication
+    filter failure. (wheat9)
+
 Release 2.6.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -31,6 +31,7 @@ import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Properties;
 
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
@@ -53,6 +54,11 @@ import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.ConfServlet;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
+import org.apache.hadoop.security.AuthenticationFilterInitializer;
+import org.apache.hadoop.security.authentication.util.FileSignerSecretProvider;
+import org.apache.hadoop.security.authentication.util.RandomSignerSecretProvider;
+import org.apache.hadoop.security.authentication.util.SignerSecretProvider;
+import org.apache.hadoop.security.authentication.util.ZKSignerSecretProvider;
 import org.apache.hadoop.security.ssl.SslSocketConnectorSecure;
 import org.apache.hadoop.jmx.JMXJsonServlet;
 import org.apache.hadoop.log.LogLevel;
@@ -91,6 +97,8 @@ 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.security.authentication.server
+    .AuthenticationFilter.*;
 /**
  * Create a Jetty embedded server to answer http requests. The primary goal is
  * to serve up status information for the server. There are three contexts:
@@ -160,6 +168,8 @@ public final class HttpServer2 implements FilterContainer {
     private boolean findPort;
 
     private String hostName;
+    private boolean disallowFallbackToRandomSignerSecretProvider;
+    private String authFilterConfigurationPrefix = "hadoop.http.authentication.";
 
     public Builder setName(String name){
       this.name = name;
@@ -254,6 +264,16 @@ public final class HttpServer2 implements FilterContainer {
       return this;
     }
 
+    public Builder disallowFallbackToRandomSingerSecretProvider(boolean value) {
+      this.disallowFallbackToRandomSignerSecretProvider = value;
+      return this;
+    }
+
+    public Builder authFilterConfigurationPrefix(String value) {
+      this.authFilterConfigurationPrefix = value;
+      return this;
+    }
+
     public HttpServer2 build() throws IOException {
       Preconditions.checkNotNull(name, "name is not set");
       Preconditions.checkState(!endpoints.isEmpty(), "No endpoints specified");
@@ -314,6 +334,18 @@ public final class HttpServer2 implements FilterContainer {
     this.webServer = new Server();
     this.adminsAcl = b.adminsAcl;
     this.webAppContext = createWebAppContext(b.name, b.conf, adminsAcl, appDir);
+    try {
+      SignerSecretProvider secretProvider =
+          constructSecretProvider(b, webAppContext.getServletContext());
+      this.webAppContext.getServletContext().setAttribute
+          (AuthenticationFilter.SIGNER_SECRET_PROVIDER_ATTRIBUTE,
+           secretProvider);
+    } catch(IOException e) {
+      throw e;
+    } catch (Exception e) {
+      throw new IOException(e);
+    }
+
     this.findPort = b.findPort;
     initializeWebServer(b.name, b.hostName, b.conf, b.pathSpecs);
   }
@@ -405,9 +437,28 @@ public final class HttpServer2 implements FilterContainer {
     return ctx;
   }
 
+  private static SignerSecretProvider constructSecretProvider(final Builder b,
+      ServletContext ctx)
+      throws Exception {
+    final Configuration conf = b.conf;
+    Properties config = getFilterProperties(conf,
+                                            b.authFilterConfigurationPrefix);
+    return AuthenticationFilter.constructSecretProvider(
+        ctx, config, b.disallowFallbackToRandomSignerSecretProvider);
+  }
+
+  private static Properties getFilterProperties(Configuration conf, String
+      prefix) {
+    Properties prop = new Properties();
+    Map<String, String> filterConfig = AuthenticationFilterInitializer
+        .getFilterConfigMap(conf, prefix);
+    prop.putAll(filterConfig);
+    return prop;
+  }
+
   private static void addNoCacheFilter(WebAppContext ctxt) {
     defineFilter(ctxt, NO_CACHE_FILTER, NoCacheFilter.class.getName(),
-        Collections.<String, String> emptyMap(), new String[] { "/*" });
+                 Collections.<String, String> emptyMap(), new String[] { "/*" });
   }
 
   private static class SelectChannelConnectorWithSafeStartup

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/AuthenticationFilterInitializer.java

@@ -56,6 +56,15 @@ public class AuthenticationFilterInitializer extends FilterInitializer {
    */
   @Override
   public void initFilter(FilterContainer container, Configuration conf) {
+    Map<String, String> filterConfig = getFilterConfigMap(conf, PREFIX);
+
+    container.addFilter("authentication",
+                        AuthenticationFilter.class.getName(),
+                        filterConfig);
+  }
+
+  public static Map<String, String> getFilterConfigMap(Configuration conf,
+      String prefix) {
     Map<String, String> filterConfig = new HashMap<String, String>();
 
     //setting the cookie path to root '/' so it is used for all resources.
@@ -63,9 +72,9 @@ public class AuthenticationFilterInitializer extends FilterInitializer {
 
     for (Map.Entry<String, String> entry : conf) {
       String name = entry.getKey();
-      if (name.startsWith(PREFIX)) {
+      if (name.startsWith(prefix)) {
         String value = conf.get(name);
-        name = name.substring(PREFIX.length());
+        name = name.substring(prefix.length());
         filterConfig.put(name, value);
       }
     }
@@ -82,10 +91,7 @@ public class AuthenticationFilterInitializer extends FilterInitializer {
       }
       filterConfig.put(KerberosAuthenticationHandler.PRINCIPAL, principal);
     }
-
-    container.addFilter("authentication",
-                        AuthenticationFilter.class.getName(),
-                        filterConfig);
+    return filterConfig;
   }
 
 }