open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/KeyHealthPresenter.java
2017-04-25 15:00:17 +02:00

282 lines
10 KiB
Java

/*
* Copyright (C) 2017 Vincent Breitmoser <v.breitmoser@mugenguild.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.ui.widget;
import java.util.Comparator;
import java.util.Date;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
import org.sufficientlysecure.keychain.pgp.SecurityProblem.KeySecurityProblem;
import org.sufficientlysecure.keychain.ui.widget.KeyStatusList.KeyDisplayStatus;
import org.sufficientlysecure.keychain.ui.widget.SubkeyStatusLoader.KeySubkeyStatus;
import org.sufficientlysecure.keychain.ui.widget.SubkeyStatusLoader.SubKeyItem;
public class KeyHealthPresenter implements LoaderCallbacks<KeySubkeyStatus> {
static final Comparator<SubKeyItem> SUBKEY_COMPARATOR = new Comparator<SubKeyItem>() {
@Override
public int compare(SubKeyItem one, SubKeyItem two) {
// if one is valid and the other isn't, the valid one always comes first
if (one.isValid() ^ two.isValid()) {
return one.isValid() ? -1 : 1;
}
// compare usability, if one is "more usable" than the other, that one comes first
int usability = one.mSecretKeyType.compareUsability(two.mSecretKeyType);
if (usability != 0) {
return usability;
}
if ((one.mSecurityProblem == null) ^ (two.mSecurityProblem == null)) {
return one.mSecurityProblem == null ? -1 : 1;
}
// otherwise, the newer one comes first
return one.newerThan(two) ? -1 : 1;
}
};
private final Context context;
private final KeyHealthMvpView view;
private final int loaderId;
private final long masterKeyId;
private final boolean isSecret;
private KeySubkeyStatus subkeyStatus;
private boolean showingExpandedInfo;
public KeyHealthPresenter(Context context, KeyHealthMvpView view, int loaderId, long masterKeyId, boolean isSecret) {
this.context = context;
this.view = view;
this.loaderId = loaderId;
this.masterKeyId = masterKeyId;
this.isSecret = isSecret;
view.setOnHealthClickListener(new KeyHealthClickListener() {
@Override
public void onKeyHealthClick() {
KeyHealthPresenter.this.onKeyHealthClick();
}
});
}
public void startLoader(LoaderManager loaderManager) {
loaderManager.restartLoader(loaderId, null, this);
}
@Override
public Loader<KeySubkeyStatus> onCreateLoader(int id, Bundle args) {
return new SubkeyStatusLoader(context, context.getContentResolver(), masterKeyId, SUBKEY_COMPARATOR);
}
@Override
public void onLoadFinished(Loader<KeySubkeyStatus> loader, KeySubkeyStatus subkeyStatus) {
this.subkeyStatus = subkeyStatus;
KeyHealthStatus keyHealthStatus = determineKeyHealthStatus(subkeyStatus);
boolean isInsecure = keyHealthStatus == KeyHealthStatus.INSECURE;
boolean isExpired = keyHealthStatus == KeyHealthStatus.EXPIRED;
if (isInsecure) {
boolean primaryKeySecurityProblem = subkeyStatus.keyCertify.mSecurityProblem != null;
if (primaryKeySecurityProblem) {
view.setKeyStatus(keyHealthStatus);
view.setPrimarySecurityProblem(subkeyStatus.keyCertify.mSecurityProblem);
view.setShowExpander(false);
} else {
view.setKeyStatus(keyHealthStatus);
view.setShowExpander(false);
displayExpandedInfo(false);
}
} else if (isExpired) {
view.setKeyStatus(keyHealthStatus);
view.setPrimaryExpiryDate(subkeyStatus.keyCertify.mExpiry);
view.setShowExpander(false);
} else {
view.setKeyStatus(keyHealthStatus);
view.setShowExpander(keyHealthStatus != KeyHealthStatus.REVOKED);
}
}
private KeyHealthStatus determineKeyHealthStatus(KeySubkeyStatus subkeyStatus) {
SubKeyItem keyCertify = subkeyStatus.keyCertify;
if (keyCertify.mIsRevoked) {
return KeyHealthStatus.REVOKED;
}
if (keyCertify.mIsExpired) {
return KeyHealthStatus.EXPIRED;
}
if (keyCertify.mSecurityProblem != null) {
return KeyHealthStatus.INSECURE;
}
if (!subkeyStatus.keysSign.isEmpty() && subkeyStatus.keysEncrypt.isEmpty()) {
SubKeyItem keySign = subkeyStatus.keysSign.get(0);
if (!keySign.isValid()) {
return KeyHealthStatus.BROKEN;
}
if (keySign.mSecurityProblem != null) {
return KeyHealthStatus.INSECURE;
}
return KeyHealthStatus.SIGN_ONLY;
}
if (subkeyStatus.keysSign.isEmpty() || subkeyStatus.keysEncrypt.isEmpty()) {
return KeyHealthStatus.BROKEN;
}
SubKeyItem keySign = subkeyStatus.keysSign.get(0);
SubKeyItem keyEncrypt = subkeyStatus.keysEncrypt.get(0);
if (keySign.mSecurityProblem != null && keySign.isValid()
|| keyEncrypt.mSecurityProblem != null && keyEncrypt.isValid()) {
return KeyHealthStatus.INSECURE;
}
if (!keySign.isValid() || !keyEncrypt.isValid()) {
return KeyHealthStatus.BROKEN;
}
if (keyCertify.mSecretKeyType == SecretKeyType.GNU_DUMMY
&& keySign.mSecretKeyType == SecretKeyType.GNU_DUMMY
&& keyEncrypt.mSecretKeyType == SecretKeyType.GNU_DUMMY) {
return KeyHealthStatus.STRIPPED;
}
if (keyCertify.mSecretKeyType == SecretKeyType.GNU_DUMMY
|| keySign.mSecretKeyType == SecretKeyType.GNU_DUMMY
|| keyEncrypt.mSecretKeyType == SecretKeyType.GNU_DUMMY) {
return KeyHealthStatus.PARTIAL_STRIPPED;
}
if (keyCertify.mSecretKeyType == SecretKeyType.DIVERT_TO_CARD
&& keySign.mSecretKeyType == SecretKeyType.DIVERT_TO_CARD
&& keyEncrypt.mSecretKeyType == SecretKeyType.DIVERT_TO_CARD) {
return KeyHealthStatus.DIVERT;
}
return KeyHealthStatus.OK;
}
@Override
public void onLoaderReset(Loader loader) {
}
private void onKeyHealthClick() {
if (showingExpandedInfo) {
showingExpandedInfo = false;
view.hideExpandedInfo();
} else {
showingExpandedInfo = true;
displayExpandedInfo(true);
}
}
private void displayExpandedInfo(boolean displayAll) {
SubKeyItem keyCertify = subkeyStatus.keyCertify;
SubKeyItem keySign = subkeyStatus.keysSign.isEmpty() ? null : subkeyStatus.keysSign.get(0);
SubKeyItem keyEncrypt = subkeyStatus.keysEncrypt.isEmpty() ? null : subkeyStatus.keysEncrypt.get(0);
KeyDisplayStatus certDisplayStatus = getKeyDisplayStatus(keyCertify);
KeyDisplayStatus signDisplayStatus = getKeyDisplayStatus(keySign);
KeyDisplayStatus encryptDisplayStatus = getKeyDisplayStatus(keyEncrypt);
if (!displayAll) {
if (certDisplayStatus == KeyDisplayStatus.OK) {
certDisplayStatus = null;
}
if (certDisplayStatus == KeyDisplayStatus.INSECURE) {
signDisplayStatus = null;
encryptDisplayStatus = null;
}
if (signDisplayStatus == KeyDisplayStatus.OK) {
signDisplayStatus = null;
}
if (encryptDisplayStatus == KeyDisplayStatus.OK) {
encryptDisplayStatus = null;
}
}
view.showExpandedState(certDisplayStatus, signDisplayStatus, encryptDisplayStatus);
}
private KeyDisplayStatus getKeyDisplayStatus(SubKeyItem subKeyItem) {
if (subKeyItem == null) {
return KeyDisplayStatus.UNAVAILABLE;
}
if (subKeyItem.mIsRevoked) {
return KeyDisplayStatus.REVOKED;
}
if (subKeyItem.mIsExpired) {
return KeyDisplayStatus.EXPIRED;
}
if (subKeyItem.mSecurityProblem != null) {
return KeyDisplayStatus.INSECURE;
}
if (subKeyItem.mSecretKeyType == SecretKeyType.GNU_DUMMY) {
return KeyDisplayStatus.STRIPPED;
}
if (subKeyItem.mSecretKeyType == SecretKeyType.DIVERT_TO_CARD) {
return KeyDisplayStatus.DIVERT;
}
return KeyDisplayStatus.OK;
}
enum KeyHealthStatus {
OK, DIVERT, REVOKED, EXPIRED, INSECURE, SIGN_ONLY, STRIPPED, PARTIAL_STRIPPED, BROKEN
}
interface KeyHealthMvpView {
void setKeyStatus(KeyHealthStatus keyHealthStatus);
void setPrimarySecurityProblem(KeySecurityProblem securityProblem);
void setPrimaryExpiryDate(Date expiry);
void setShowExpander(boolean showExpander);
void showExpandedState(KeyDisplayStatus certifyStatus, KeyDisplayStatus signStatus,
KeyDisplayStatus encryptStatus);
void hideExpandedInfo();
void setOnHealthClickListener(KeyHealthClickListener keyHealthClickListener);
}
interface KeyStatusMvpView {
void setCertifyStatus(KeyDisplayStatus unavailable);
void setSignStatus(KeyDisplayStatus signStatus);
void setDecryptStatus(KeyDisplayStatus encryptStatus);
}
interface KeyHealthClickListener {
void onKeyHealthClick();
}
}