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/*
* Copyright (C) 2013-2015 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2015 Vincent Breitmoser <v.breitmoser@mugenguild.com>
* Copyright (C) 2015 Adithya Abraham Philip <adithyaphilip@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.operations;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.support.annotation.NonNull;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.operations.results.InputPendingResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.operations.results.RevokeResult;
import org.sufficientlysecure.keychain.pgp.Progressable;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.RevokeKeyringParcel;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.util.Log;
public class RevokeOperation extends BaseOperation<RevokeKeyringParcel> {
public RevokeOperation(Context context, ProviderHelper providerHelper, Progressable progressable) {
super(context, providerHelper, progressable);
}
@NonNull
@Override
public OperationResult execute(RevokeKeyringParcel revokeKeyringParcel,
CryptoInputParcel cryptoInputParcel) {
// we don't cache passphrases during revocation
cryptoInputParcel.mCachePassphrase = false;
long masterKeyId = revokeKeyringParcel.mMasterKeyId;
OperationResult.OperationLog log = new OperationResult.OperationLog();
log.add(OperationResult.LogType.MSG_REVOKE, 0,
KeyFormattingUtils.beautifyKeyId(masterKeyId));
try {
Uri secretUri = KeychainContract.KeyRings.buildUnifiedKeyRingUri(masterKeyId);
CachedPublicKeyRing keyRing = mProviderHelper.getCachedPublicKeyRing(secretUri);
// check if this is a master secret key we can work with
switch (keyRing.getSecretKeyType(masterKeyId)) {
case GNU_DUMMY:
log.add(OperationResult.LogType.MSG_EK_ERROR_DUMMY, 1);
return new RevokeResult(RevokeResult.RESULT_ERROR, log, masterKeyId);
}
SaveKeyringParcel saveKeyringParcel = getRevokedSaveKeyringParcel(masterKeyId,
keyRing.getFingerprint());
// all revoke operations are made atomic as of now
saveKeyringParcel.setUpdateOptions(revokeKeyringParcel.mUpload, true,
revokeKeyringParcel.mKeyserver);
InputPendingResult revokeAndUploadResult = new EditKeyOperation(mContext,
mProviderHelper, mProgressable, mCancelled)
.execute(saveKeyringParcel, cryptoInputParcel);
if (revokeAndUploadResult.isPending()) {
return revokeAndUploadResult;
}
log.add(revokeAndUploadResult, 1);
if (revokeAndUploadResult.success()) {
log.add(OperationResult.LogType.MSG_REVOKE_OK, 1);
return new RevokeResult(RevokeResult.RESULT_OK, log, masterKeyId);
} else {
log.add(OperationResult.LogType.MSG_REVOKE_KEY_FAIL, 1);
return new RevokeResult(RevokeResult.RESULT_ERROR, log, masterKeyId);
}
} catch (PgpKeyNotFoundException | ProviderHelper.NotFoundException e) {
Log.e(Constants.TAG, "could not find key to revoke", e);
log.add(OperationResult.LogType.MSG_REVOKE_KEY_FAIL, 1);
return new RevokeResult(RevokeResult.RESULT_ERROR, log, masterKeyId);
}
}
private SaveKeyringParcel getRevokedSaveKeyringParcel(long masterKeyId, byte[] fingerprint) {
final String[] SUBKEYS_PROJECTION = new String[]{
KeychainContract.Keys.KEY_ID
};
final int INDEX_KEY_ID = 0;
Uri keysUri = KeychainContract.Keys.buildKeysUri(masterKeyId);
Cursor subKeyCursor =
mContext.getContentResolver().query(keysUri, SUBKEYS_PROJECTION, null, null, null);
SaveKeyringParcel saveKeyringParcel =
new SaveKeyringParcel(masterKeyId, fingerprint);
// add all subkeys, for revocation
while (subKeyCursor != null && subKeyCursor.moveToNext()) {
saveKeyringParcel.mRevokeSubKeys.add(subKeyCursor.getLong(INDEX_KEY_ID));
}
if (subKeyCursor != null) {
subKeyCursor.close();
}
final String[] USER_IDS_PROJECTION = new String[]{
KeychainContract.UserPackets.USER_ID
};
final int INDEX_USER_ID = 0;
Uri userIdsUri = KeychainContract.UserPackets.buildUserIdsUri(masterKeyId);
Cursor userIdCursor = mContext.getContentResolver().query(
userIdsUri, USER_IDS_PROJECTION, null, null, null);
while (userIdCursor != null && userIdCursor.moveToNext()) {
saveKeyringParcel.mRevokeUserIds.add(userIdCursor.getString(INDEX_USER_ID));
}
if (userIdCursor != null) {
userIdCursor.close();
}
return saveKeyringParcel;
}
}
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