HADOOP-10905. LdapGroupsMapping Should use configuration.getPassword for SSL and LDAP Passwords. Contributed by Larry McCay

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1616054 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -540,6 +540,9 @@ Release 2.6.0 - UNRELEASED
 
     HADOOP-10759. Remove hardcoded JAVA_HEAP_MAX. (Sam Liu via Eric Yang)
 
+    HADOOP-10905. LdapGroupsMapping Should use configuration.getPassword for SSL
+    and LDAP Passwords. (lmccay via brandonli)
+
 Release 2.5.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -312,15 +312,15 @@ public class LdapGroupsMapping
     useSsl = conf.getBoolean(LDAP_USE_SSL_KEY, LDAP_USE_SSL_DEFAULT);
     keystore = conf.get(LDAP_KEYSTORE_KEY, LDAP_KEYSTORE_DEFAULT);
     
-    keystorePass =
-        conf.get(LDAP_KEYSTORE_PASSWORD_KEY, LDAP_KEYSTORE_PASSWORD_DEFAULT);
+    keystorePass = getPassword(conf, LDAP_KEYSTORE_PASSWORD_KEY,
+        LDAP_KEYSTORE_PASSWORD_DEFAULT);
     if (keystorePass.isEmpty()) {
       keystorePass = extractPassword(conf.get(LDAP_KEYSTORE_PASSWORD_FILE_KEY,
           LDAP_KEYSTORE_PASSWORD_FILE_DEFAULT));
     }
     
     bindUser = conf.get(BIND_USER_KEY, BIND_USER_DEFAULT);
-    bindPassword = conf.get(BIND_PASSWORD_KEY, BIND_PASSWORD_DEFAULT);
+    bindPassword = getPassword(conf, BIND_PASSWORD_KEY, BIND_PASSWORD_DEFAULT);
     if (bindPassword.isEmpty()) {
       bindPassword = extractPassword(
           conf.get(BIND_PASSWORD_FILE_KEY, BIND_PASSWORD_FILE_DEFAULT));
@@ -341,7 +341,25 @@ public class LdapGroupsMapping
 
     this.conf = conf;
   }
-  
+
+  String getPassword(Configuration conf, String alias, String defaultPass) {
+    String password = null;
+    try {
+      char[] passchars = conf.getPassword(alias);
+      if (passchars != null) {
+        password = new String(passchars);
+      }
+      else {
+        password = defaultPass;
+      }
+    }
+    catch (IOException ioe) {
+      LOG.warn("Exception while trying to password for alias " + alias + ": "
+          + ioe.getMessage());
+    }
+    return password;
+  }
+
   String extractPassword(String pwFile) {
     if (pwFile.isEmpty()) {
       // If there is no password file defined, we'll assume that we should do

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestLdapGroupsMapping.java

@@ -17,6 +17,8 @@
  */
 package org.apache.hadoop.security;
 
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
 import static org.mockito.Mockito.*;
 
 import java.io.File;
@@ -38,6 +40,9 @@ import javax.naming.directory.SearchControls;
 import javax.naming.directory.SearchResult;
 
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.security.alias.CredentialProvider;
+import org.apache.hadoop.security.alias.CredentialProviderFactory;
+import org.apache.hadoop.security.alias.JavaKeyStoreProvider;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
@@ -154,4 +159,57 @@ public class TestLdapGroupsMapping {
     Assert.assertEquals("hadoop",
         mapping.extractPassword(secretFile.getPath()));
   }
+
+  @Test
+  public void testConfGetPassword() throws Exception {
+    File testDir = new File(System.getProperty("test.build.data",
+                                               "target/test-dir"));
+    Configuration conf = new Configuration();
+    final String ourUrl =
+        JavaKeyStoreProvider.SCHEME_NAME + "://file/" + testDir + "/test.jks";
+
+    File file = new File(testDir, "test.jks");
+    file.delete();
+    conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, ourUrl);
+
+    CredentialProvider provider =
+        CredentialProviderFactory.getProviders(conf).get(0);
+    char[] bindpass = {'b', 'i', 'n', 'd', 'p', 'a', 's', 's'};
+    char[] storepass = {'s', 't', 'o', 'r', 'e', 'p', 'a', 's', 's'};
+
+    // ensure that we get nulls when the key isn't there
+    assertEquals(null, provider.getCredentialEntry(
+        LdapGroupsMapping.BIND_PASSWORD_KEY));
+    assertEquals(null, provider.getCredentialEntry
+        (LdapGroupsMapping.LDAP_KEYSTORE_PASSWORD_KEY));
+
+    // create new aliases
+    try {
+      provider.createCredentialEntry(
+          LdapGroupsMapping.BIND_PASSWORD_KEY, bindpass);
+
+      provider.createCredentialEntry(
+          LdapGroupsMapping.LDAP_KEYSTORE_PASSWORD_KEY, storepass);
+      provider.flush();
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+    // make sure we get back the right key
+    assertArrayEquals(bindpass, provider.getCredentialEntry(
+        LdapGroupsMapping.BIND_PASSWORD_KEY).getCredential());
+    assertArrayEquals(storepass, provider.getCredentialEntry(
+        LdapGroupsMapping.LDAP_KEYSTORE_PASSWORD_KEY).getCredential());
+
+    LdapGroupsMapping mapping = new LdapGroupsMapping();
+    Assert.assertEquals("bindpass",
+        mapping.getPassword(conf, LdapGroupsMapping.BIND_PASSWORD_KEY, ""));
+    Assert.assertEquals("storepass",
+        mapping.getPassword(conf, LdapGroupsMapping.LDAP_KEYSTORE_PASSWORD_KEY,
+           ""));
+    // let's make sure that a password that doesn't exist returns an
+    // empty string as currently expected and used to trigger a call to
+    // extract password
+    Assert.assertEquals("", mapping.getPassword(conf,"invalid-alias", ""));
+  }
 }