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/*
* Copyright 2000-2010 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.ide.passwordSafe.impl.providers;
import com.intellij.ide.passwordSafe.PasswordSafeException;
import com.intellij.ide.passwordSafe.impl.PasswordSafeProvider;
import com.intellij.openapi.application.Application;
import com.intellij.openapi.application.ModalityState;
import com.intellij.openapi.project.Project;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Base Java-based provider for password safe that assumes a simple key-value storage.
*/
public abstract class BasePasswordSafeProvider extends PasswordSafeProvider {
/**
* <p>Get secret key for the provider.</p>
* <p><b>NB: </b>
* This method may be called from the background,
* and it may need to ask user to enter the master password to access the database by calling
* {@link Application#invokeAndWait(Runnable, ModalityState) invokeAndWait()} to show a modal dialog.
* So make sure not to call it from the read action.
* Calling this method from the dispatch thread is allowed.</p>
*
* @param project the project to use
* @param requestor
* @return the secret key to use
* @throws PasswordSafeException in case of problems with access to the password database.
* @throws IllegalStateException if the method is called from the read action.
*/
protected abstract byte[] key(@Nullable Project project, @NotNull Class requestor) throws PasswordSafeException;
@Nullable
public String getPassword(@Nullable Project project, @NotNull Class requestor, String key) throws PasswordSafeException {
byte[] k = dbKey(project, requestor, key);
byte[] ct = getEncryptedPassword(k);
return ct == null ? null : EncryptionUtil.decryptText(key(project, requestor), ct);
}
/**
* Get encrypted password from database
*
* @param key the key to get
* @return the encrypted password
*/
protected abstract byte[] getEncryptedPassword(byte[] key);
/**
* Get database key
*
* @param project
* @param requestor the requestor class
* @param key the key to use
* @return the key to use for map
*/
private byte[] dbKey(@Nullable Project project, Class requestor, String key) throws PasswordSafeException {
return EncryptionUtil.dbKey(key(project, requestor), requestor, key);
}
public void removePassword(@Nullable Project project, @NotNull Class requester, String key) throws PasswordSafeException {
byte[] k = dbKey(project, requester, key);
removeEncryptedPassword(k);
}
/**
* Remove encrypted password from database
*
* @param key the key to remote
*/
protected abstract void removeEncryptedPassword(byte[] key);
public void storePassword(@Nullable Project project, @NotNull Class requestor, String key, String value) throws PasswordSafeException {
byte[] k = dbKey(project, requestor, key);
byte[] ct = EncryptionUtil.encryptText(key(project, requestor), value);
storeEncryptedPassword(k, ct);
}
/**
* Store encrypted password in the database
*
* @param key the key to store
* @param encryptedPassword the password to store
*/
protected abstract void storeEncryptedPassword(byte[] key, byte[] encryptedPassword);
}
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