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/*******************************************************************************
* Copyright (c) 2010 Tasktop Technologies and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.commons.repositories.core;
import java.io.IOException;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.equinox.security.storage.EncodingUtils;
import org.eclipse.equinox.security.storage.ISecurePreferences;
import org.eclipse.equinox.security.storage.SecurePreferencesFactory;
import org.eclipse.equinox.security.storage.StorageException;
import org.eclipse.mylyn.commons.core.StatusHandler;
import org.eclipse.mylyn.commons.repositories.core.auth.ICredentialsStore;
/**
* @author Steffen Pingel
*/
public class SecureCredentialsStore implements ICredentialsStore {
private static final String ID_NODE = "org.eclipse.mylyn.commons.repository"; //$NON-NLS-1$
private final String id;
private InMemoryCredentialsStore inMemoryStore;
private boolean loggedStorageException;
public SecureCredentialsStore(String id) {
this.id = id;
}
public void clear() {
//getSecurePreferences().clear();
getSecurePreferences().removeNode();
getInMemoryStore().clear();
}
public synchronized void copyTo(ICredentialsStore target) {
Assert.isNotNull(target);
if (!(target instanceof SecureCredentialsStore)) {
throw new IllegalArgumentException(
"SecureCredentialsStore may only by copied to stores of the same type: " + target.getClass()); //$NON-NLS-1$
}
ISecurePreferences preferences = getSecurePreferences();
for (String key : preferences.keys()) {
try {
String value = preferences.get(key, null);
boolean encrypted = preferences.isEncrypted(key);
target.put(key, value, encrypted);
} catch (StorageException e) {
handle(e);
}
}
if (inMemoryStore != null) {
inMemoryStore.copyTo(target);
}
}
public void flush() throws IOException {
getSecurePreferences().flush();
}
public String get(final String key, final String def) {
InMemoryCredentialsStore memoryStore = getInMemoryStore();
synchronized (memoryStore) {
if (memoryStore.hasKey(key)) {
return memoryStore.get(key, def);
}
}
try {
return getSecurePreferences().get(key, def);
} catch (StorageException e) {
handle(e);
return memoryStore.get(key, def);
}
}
public boolean getBoolean(String key, boolean def) {
InMemoryCredentialsStore memoryStore = getInMemoryStore();
synchronized (memoryStore) {
if (memoryStore.hasKey(key)) {
return memoryStore.getBoolean(key, def);
}
}
try {
return getSecurePreferences().getBoolean(key, def);
} catch (StorageException e) {
handle(e);
return memoryStore.getBoolean(key, def);
}
}
public byte[] getByteArray(String key, byte[] def) {
InMemoryCredentialsStore memoryStore = getInMemoryStore();
synchronized (memoryStore) {
if (memoryStore.hasKey(key)) {
return memoryStore.getByteArray(key, def);
}
}
try {
return getSecurePreferences().getByteArray(key, def);
} catch (StorageException e) {
handle(e);
return memoryStore.getByteArray(key, def);
}
}
public String getId() {
return id;
}
public String[] keys() {
return getSecurePreferences().keys();
}
public void put(String key, String value, boolean encrypt) {
put(key, value, encrypt, true);
}
public void put(String key, String value, boolean encrypt, boolean persist) {
if (persist) {
try {
getSecurePreferences().put(key, value, encrypt);
getInMemoryStore().remove(key);
} catch (StorageException e) {
handle(e);
getInMemoryStore().put(key, value, encrypt, true);
}
} else {
getInMemoryStore().put(key, value, encrypt, false);
getSecurePreferences().remove(key);
}
}
public void putBoolean(String key, boolean value, boolean encrypt) {
try {
getSecurePreferences().putBoolean(key, value, encrypt);
getInMemoryStore().remove(key);
} catch (StorageException e) {
handle(e);
getInMemoryStore().putBoolean(key, value, encrypt);
}
}
public void putByteArray(String key, byte[] value, boolean encrypt) {
try {
getSecurePreferences().putByteArray(key, value, encrypt);
getInMemoryStore().remove(key);
} catch (StorageException e) {
handle(e);
getInMemoryStore().putByteArray(key, value, encrypt);
}
}
public void remove(String key) {
getSecurePreferences().remove(key);
}
protected synchronized InMemoryCredentialsStore getInMemoryStore() {
if (inMemoryStore == null) {
inMemoryStore = InMemoryCredentialsStore.getStore(id);
}
return inMemoryStore;
}
protected ISecurePreferences getSecurePreferences() {
ISecurePreferences securePreferences = SecurePreferencesFactory.getDefault().node(ID_NODE);
securePreferences = securePreferences.node(EncodingUtils.encodeSlashes(getId()));
return securePreferences;
}
private void handle(StorageException e) {
if (!loggedStorageException) {
loggedStorageException = true;
StatusHandler.log(new Status(
IStatus.ERROR,
RepositoriesCoreInternal.ID_PLUGIN,
"Unexpected error accessing secure storage, falling back to in memory store for credentials. Some credentials may not be saved.", //$NON-NLS-1$
e));
}
}
}
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