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HADOOP-11337. KeyAuthorizationKeyProvider access checks need to be done atomically. Contributed by Dian Fu.

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This commit is contained in:
Andrew Wang 2014-12-01 21:21:23 -08:00
parent 51af8d367d
commit 9fa2990257
2 changed files with 108 additions and 32 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -479,6 +479,9 @@ Release 2.7.0 - UNRELEASED
HADOOP-11333. Fix deadlock in DomainSocketWatcher when the notification
pipe is full (zhaoyunjiong via cmccabe)
HADOOP-11337. KeyAuthorizationKeyProvider access checks need to be done
atomically. (Dian Fu via wang)
Release 2.6.0 - 2014-11-18
INCOMPATIBLE CHANGES

73
hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KeyAuthorizationKeyProvider.java
View File

@ -23,6 +23,9 @@
import java.security.NoSuchAlgorithmException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.apache.hadoop.crypto.key.KeyProvider;
import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
@ -83,6 +86,8 @@ public boolean hasAccessToKey(String aclName, UserGroupInformation ugi,
private final KeyProviderCryptoExtension provider;
private final KeyACLs acls;
private Lock readLock;
private Lock writeLock;
/**
* The constructor takes a {@link KeyProviderCryptoExtension} and an
@ -96,6 +101,9 @@ public KeyAuthorizationKeyProvider(KeyProviderCryptoExtension keyProvider,
super(keyProvider, null);
this.provider = keyProvider;
this.acls = acls;
ReadWriteLock lock = new ReentrantReadWriteLock(true);
readLock = lock.readLock();
writeLock = lock.writeLock();
}
// This method first checks if "key.acl.name" attribute is present as an
@ -146,50 +154,85 @@ private void checkAccess(String aclName, UserGroupInformation ugi,
@Override
public KeyVersion createKey(String name, Options options)
throws NoSuchAlgorithmException, IOException {
writeLock.lock();
try {
authorizeCreateKey(name, options, getUser());
return provider.createKey(name, options);
} finally {
writeLock.unlock();
}
}
@Override
public KeyVersion createKey(String name, byte[] material, Options options)
throws IOException {
writeLock.lock();
try {
authorizeCreateKey(name, options, getUser());
return provider.createKey(name, material, options);
} finally {
writeLock.unlock();
}
}
@Override
public KeyVersion rollNewVersion(String name)
throws NoSuchAlgorithmException, IOException {
writeLock.lock();
try {
doAccessCheck(name, KeyOpType.MANAGEMENT);
return provider.rollNewVersion(name);
} finally {
writeLock.unlock();
}
}
@Override
public void deleteKey(String name) throws IOException {
writeLock.lock();
try {
doAccessCheck(name, KeyOpType.MANAGEMENT);
provider.deleteKey(name);
} finally {
writeLock.unlock();
}
}
@Override
public KeyVersion rollNewVersion(String name, byte[] material)
throws IOException {
writeLock.lock();
try {
doAccessCheck(name, KeyOpType.MANAGEMENT);
return provider.rollNewVersion(name, material);
} finally {
writeLock.unlock();
}
}
@Override
public void warmUpEncryptedKeys(String... names) throws IOException {
readLock.lock();
try {
for (String name : names) {
doAccessCheck(name, KeyOpType.GENERATE_EEK);
}
provider.warmUpEncryptedKeys(names);
} finally {
readLock.unlock();
}
}
@Override
public EncryptedKeyVersion generateEncryptedKey(String encryptionKeyName)
throws IOException, GeneralSecurityException {
readLock.lock();
try {
doAccessCheck(encryptionKeyName, KeyOpType.GENERATE_EEK);
return provider.generateEncryptedKey(encryptionKeyName);
} finally {
readLock.unlock();
}
}
private void verifyKeyVersionBelongsToKey(EncryptedKeyVersion ekv)
@ -206,19 +249,29 @@ private void verifyKeyVersionBelongsToKey(EncryptedKeyVersion ekv)
@Override
public KeyVersion decryptEncryptedKey(EncryptedKeyVersion encryptedKeyVersion)
throws IOException, GeneralSecurityException {
readLock.lock();
try {
verifyKeyVersionBelongsToKey(encryptedKeyVersion);
doAccessCheck(
encryptedKeyVersion.getEncryptionKeyName(), KeyOpType.DECRYPT_EEK);
return provider.decryptEncryptedKey(encryptedKeyVersion);
} finally {
readLock.unlock();
}
}
@Override
public KeyVersion getKeyVersion(String versionName) throws IOException {
readLock.lock();
try {
KeyVersion keyVersion = provider.getKeyVersion(versionName);
if (keyVersion != null) {
doAccessCheck(keyVersion.getName(), KeyOpType.READ);
}
return keyVersion;
} finally {
readLock.unlock();
}
}
@Override
@ -228,28 +281,48 @@ public List<String> getKeys() throws IOException {
@Override
public List<KeyVersion> getKeyVersions(String name) throws IOException {
readLock.lock();
try {
doAccessCheck(name, KeyOpType.READ);
return provider.getKeyVersions(name);
} finally {
readLock.unlock();
}
}
@Override
public Metadata getMetadata(String name) throws IOException {
readLock.lock();
try {
doAccessCheck(name, KeyOpType.READ);
return provider.getMetadata(name);
} finally {
readLock.unlock();
}
}
@Override
public Metadata[] getKeysMetadata(String... names) throws IOException {
readLock.lock();
try {
for (String name : names) {
doAccessCheck(name, KeyOpType.READ);
}
return provider.getKeysMetadata(names);
} finally {
readLock.unlock();
}
}
@Override
public KeyVersion getCurrentKey(String name) throws IOException {
readLock.lock();
try {
doAccessCheck(name, KeyOpType.READ);
return provider.getCurrentKey(name);
} finally {
readLock.unlock();
}
}
@Override