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HDFS-3553. Hftp proxy tokens are broken (daryn) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1366471 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Daryn Sharp 2012-07-27 18:02:56 +00:00
parent b3b72482e4
commit cbd59c1c50
3 changed files with 331 additions and 67 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -1411,6 +1411,8 @@ Release 0.23.3 - UNRELEASED
HDFS-3696. Set chunked streaming mode in WebHdfsFileSystem write operations
to get around a Java library bug causing OutOfMemoryError. (szetszwo)
HDFS-3553. Hftp proxy tokens are broken (daryn)
Release 0.23.2 - UNRELEASED
INCOMPATIBLE CHANGES

117
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
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@ -487,12 +487,17 @@ public class JspHelper {
*/
public static UserGroupInformation getDefaultWebUser(Configuration conf
) throws IOException {
return UserGroupInformation.createRemoteUser(getDefaultWebUserName(conf));
}
private static String getDefaultWebUserName(Configuration conf
) throws IOException {
String user = conf.get(
HADOOP_HTTP_STATIC_USER, DEFAULT_HADOOP_HTTP_STATIC_USER);
if (user == null || user.length() == 0) {
throw new IOException("Cannot determine UGI from request or conf");
}
return UserGroupInformation.createRemoteUser(user);
return user;
}
private static InetSocketAddress getNNServiceAddress(ServletContext context,
@ -538,15 +543,58 @@ public class JspHelper {
HttpServletRequest request, Configuration conf,
final AuthenticationMethod secureAuthMethod,
final boolean tryUgiParameter) throws IOException {
final UserGroupInformation ugi;
UserGroupInformation ugi = null;
final String usernameFromQuery = getUsernameFromQuery(request, tryUgiParameter);
final String doAsUserFromQuery = request.getParameter(DoAsParam.NAME);
final String remoteUser;
if(UserGroupInformation.isSecurityEnabled()) {
final String remoteUser = request.getRemoteUser();
String tokenString = request.getParameter(DELEGATION_PARAMETER_NAME);
if (UserGroupInformation.isSecurityEnabled()) {
remoteUser = request.getRemoteUser();
final String tokenString = request.getParameter(DELEGATION_PARAMETER_NAME);
if (tokenString != null) {
Token<DelegationTokenIdentifier> token =
// Token-based connections need only verify the effective user, and
// disallow proxying to different user. Proxy authorization checks
// are not required since the checks apply to issuing a token.
ugi = getTokenUGI(context, request, tokenString, conf);
checkUsername(ugi.getShortUserName(), usernameFromQuery);
checkUsername(ugi.getShortUserName(), doAsUserFromQuery);
} else if (remoteUser == null) {
throw new IOException(
"Security enabled but user not authenticated by filter");
}
} else {
// Security's not on, pull from url or use default web user
remoteUser = (usernameFromQuery == null)
? getDefaultWebUserName(conf) // not specified in request
: usernameFromQuery;
}
if (ugi == null) { // security is off, or there's no token
ugi = UserGroupInformation.createRemoteUser(remoteUser);
checkUsername(ugi.getShortUserName(), usernameFromQuery);
if (UserGroupInformation.isSecurityEnabled()) {
// This is not necessarily true, could have been auth'ed by user-facing
// filter
ugi.setAuthenticationMethod(secureAuthMethod);
}
if (doAsUserFromQuery != null) {
// create and attempt to authorize a proxy user
ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, ugi);
ProxyUsers.authorize(ugi, request.getRemoteAddr(), conf);
}
}
if(LOG.isDebugEnabled())
LOG.debug("getUGI is returning: " + ugi.getShortUserName());
return ugi;
}
private static UserGroupInformation getTokenUGI(ServletContext context,
HttpServletRequest request,
String tokenString,
Configuration conf)
throws IOException {
final Token<DelegationTokenIdentifier> token =
new Token<DelegationTokenIdentifier>();
token.decodeFromUrlString(tokenString);
InetSocketAddress serviceAddress = getNNServiceAddress(context, request);
@ -554,8 +602,9 @@ public class JspHelper {
SecurityUtil.setTokenService(token, serviceAddress);
token.setKind(DelegationTokenIdentifier.HDFS_DELEGATION_KIND);
}
ByteArrayInputStream buf = new ByteArrayInputStream(token
.getIdentifier());
ByteArrayInputStream buf =
new ByteArrayInputStream(token.getIdentifier());
DataInputStream in = new DataInputStream(buf);
DelegationTokenIdentifier id = new DelegationTokenIdentifier();
id.readFields(in);
@ -566,58 +615,8 @@ public class JspHelper {
nn.getNamesystem().verifyToken(id, token.getPassword());
}
}
ugi = id.getUser();
if (ugi.getRealUser() == null) {
//non-proxy case
checkUsername(ugi.getShortUserName(), usernameFromQuery);
checkUsername(null, doAsUserFromQuery);
} else {
//proxy case
checkUsername(ugi.getRealUser().getShortUserName(), usernameFromQuery);
checkUsername(ugi.getShortUserName(), doAsUserFromQuery);
ProxyUsers.authorize(ugi, request.getRemoteAddr(), conf);
}
UserGroupInformation ugi = id.getUser();
ugi.addToken(token);
} else {
if(remoteUser == null) {
throw new IOException("Security enabled but user not " +
"authenticated by filter");
}
final UserGroupInformation realUgi = UserGroupInformation.createRemoteUser(remoteUser);
checkUsername(realUgi.getShortUserName(), usernameFromQuery);
// This is not necessarily true, could have been auth'ed by user-facing
// filter
realUgi.setAuthenticationMethod(secureAuthMethod);
ugi = initUGI(realUgi, doAsUserFromQuery, request, true, conf);
}
} else { // Security's not on, pull from url
final UserGroupInformation realUgi = usernameFromQuery == null?
getDefaultWebUser(conf) // not specified in request
: UserGroupInformation.createRemoteUser(usernameFromQuery);
realUgi.setAuthenticationMethod(AuthenticationMethod.SIMPLE);
ugi = initUGI(realUgi, doAsUserFromQuery, request, false, conf);
}
if(LOG.isDebugEnabled())
LOG.debug("getUGI is returning: " + ugi.getShortUserName());
return ugi;
}
private static UserGroupInformation initUGI(final UserGroupInformation realUgi,
final String doAsUserFromQuery, final HttpServletRequest request,
final boolean isSecurityEnabled, final Configuration conf
) throws AuthorizationException {
final UserGroupInformation ugi;
if (doAsUserFromQuery == null) {
//non-proxy case
ugi = realUgi;
} else {
//proxy case
ugi = UserGroupInformation.createProxyUser(doAsUserFromQuery, realUgi);
ugi.setAuthenticationMethod(
isSecurityEnabled? AuthenticationMethod.PROXY: AuthenticationMethod.SIMPLE);
ProxyUsers.authorize(ugi, request.getRemoteAddr(), conf);
}
return ugi;
}

263
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/common/TestJspHelper.java
View File

@ -31,8 +31,13 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer;
import org.apache.hadoop.hdfs.web.resources.DoAsParam;
import org.apache.hadoop.hdfs.web.resources.UserParam;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
import org.apache.hadoop.security.authorize.AuthorizationException;
import org.apache.hadoop.security.authorize.ProxyUsers;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager;
@ -136,4 +141,262 @@ public class TestJspHelper {
Assert.assertEquals("", delegationTokenParam);
}
@Test
public void testGetUgiFromToken() throws IOException {
conf.set(DFSConfigKeys.FS_DEFAULT_NAME_KEY, "hdfs://localhost:4321/");
ServletContext context = mock(ServletContext.class);
String realUser = "TheDoctor";
String user = "TheNurse";
conf.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
UserGroupInformation.setConfiguration(conf);
UserGroupInformation ugi;
HttpServletRequest request;
Text ownerText = new Text(user);
DelegationTokenIdentifier dtId = new DelegationTokenIdentifier(
ownerText, ownerText, new Text(realUser));
Token<DelegationTokenIdentifier> token = new Token<DelegationTokenIdentifier>(
dtId, new DummySecretManager(0, 0, 0, 0));
String tokenString = token.encodeToUrlString();
// token with no auth-ed user
request = getMockRequest(null, null, null);
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromToken(ugi);
// token with auth-ed user
request = getMockRequest(realUser, null, null);
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromToken(ugi);
// completely different user, token trumps auth
request = getMockRequest("rogue", null, null);
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromToken(ugi);
// expected case
request = getMockRequest(null, user, null);
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromToken(ugi);
// can't proxy with a token!
request = getMockRequest(null, null, "rogue");
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Usernames not matched: name=rogue != expected="+user,
ioe.getMessage());
}
// can't proxy with a token!
request = getMockRequest(null, user, "rogue");
when(request.getParameter(JspHelper.DELEGATION_PARAMETER_NAME)).thenReturn(
tokenString);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Usernames not matched: name=rogue != expected="+user,
ioe.getMessage());
}
}
@Test
public void testGetNonProxyUgi() throws IOException {
conf.set(DFSConfigKeys.FS_DEFAULT_NAME_KEY, "hdfs://localhost:4321/");
ServletContext context = mock(ServletContext.class);
String realUser = "TheDoctor";
String user = "TheNurse";
conf.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
UserGroupInformation.setConfiguration(conf);
UserGroupInformation ugi;
HttpServletRequest request;
// have to be auth-ed with remote user
request = getMockRequest(null, null, null);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Security enabled but user not authenticated by filter",
ioe.getMessage());
}
request = getMockRequest(null, realUser, null);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Security enabled but user not authenticated by filter",
ioe.getMessage());
}
// ugi for remote user
request = getMockRequest(realUser, null, null);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNull(ugi.getRealUser());
Assert.assertEquals(ugi.getShortUserName(), realUser);
checkUgiFromAuth(ugi);
// ugi for remote user = real user
request = getMockRequest(realUser, realUser, null);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNull(ugi.getRealUser());
Assert.assertEquals(ugi.getShortUserName(), realUser);
checkUgiFromAuth(ugi);
// ugi for remote user != real user
request = getMockRequest(realUser, user, null);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Usernames not matched: name="+user+" != expected="+realUser,
ioe.getMessage());
}
}
@Test
public void testGetProxyUgi() throws IOException {
conf.set(DFSConfigKeys.FS_DEFAULT_NAME_KEY, "hdfs://localhost:4321/");
ServletContext context = mock(ServletContext.class);
String realUser = "TheDoctor";
String user = "TheNurse";
conf.set(DFSConfigKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
conf.set(ProxyUsers.CONF_HADOOP_PROXYUSER+realUser+".groups", "*");
conf.set(ProxyUsers.CONF_HADOOP_PROXYUSER+realUser+".hosts", "*");
ProxyUsers.refreshSuperUserGroupsConfiguration(conf);
UserGroupInformation.setConfiguration(conf);
UserGroupInformation ugi;
HttpServletRequest request;
// have to be auth-ed with remote user
request = getMockRequest(null, null, user);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Security enabled but user not authenticated by filter",
ioe.getMessage());
}
request = getMockRequest(null, realUser, user);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Security enabled but user not authenticated by filter",
ioe.getMessage());
}
// proxy ugi for user via remote user
request = getMockRequest(realUser, null, user);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromAuth(ugi);
// proxy ugi for user vi a remote user = real user
request = getMockRequest(realUser, realUser, user);
ugi = JspHelper.getUGI(context, request, conf);
Assert.assertNotNull(ugi.getRealUser());
Assert.assertEquals(ugi.getRealUser().getShortUserName(), realUser);
Assert.assertEquals(ugi.getShortUserName(), user);
checkUgiFromAuth(ugi);
// proxy ugi for user via remote user != real user
request = getMockRequest(realUser, user, user);
try {
JspHelper.getUGI(context, request, conf);
Assert.fail("bad request allowed");
} catch (IOException ioe) {
Assert.assertEquals(
"Usernames not matched: name="+user+" != expected="+realUser,
ioe.getMessage());
}
// try to get get a proxy user with unauthorized user
try {
request = getMockRequest(user, null, realUser);
JspHelper.getUGI(context, request, conf);
Assert.fail("bad proxy request allowed");
} catch (AuthorizationException ae) {
Assert.assertEquals(
"User: " + user + " is not allowed to impersonate " + realUser,
ae.getMessage());
}
try {
request = getMockRequest(user, user, realUser);
JspHelper.getUGI(context, request, conf);
Assert.fail("bad proxy request allowed");
} catch (AuthorizationException ae) {
Assert.assertEquals(
"User: " + user + " is not allowed to impersonate " + realUser,
ae.getMessage());
}
}
private HttpServletRequest getMockRequest(String remoteUser, String user, String doAs) {
HttpServletRequest request = mock(HttpServletRequest.class);
when(request.getParameter(UserParam.NAME)).thenReturn(user);
if (doAs != null) {
when(request.getParameter(DoAsParam.NAME)).thenReturn(doAs);
}
when(request.getRemoteUser()).thenReturn(remoteUser);
return request;
}
private void checkUgiFromAuth(UserGroupInformation ugi) {
if (ugi.getRealUser() != null) {
Assert.assertEquals(AuthenticationMethod.PROXY,
ugi.getAuthenticationMethod());
Assert.assertEquals(AuthenticationMethod.KERBEROS_SSL,
ugi.getRealUser().getAuthenticationMethod());
} else {
Assert.assertEquals(AuthenticationMethod.KERBEROS_SSL,
ugi.getAuthenticationMethod());
}
}
private void checkUgiFromToken(UserGroupInformation ugi) {
if (ugi.getRealUser() != null) {
Assert.assertEquals(AuthenticationMethod.PROXY,
ugi.getAuthenticationMethod());
Assert.assertEquals(AuthenticationMethod.TOKEN,
ugi.getRealUser().getAuthenticationMethod());
} else {
Assert.assertEquals(AuthenticationMethod.TOKEN,
ugi.getAuthenticationMethod());
}
}
}