mirror of https://github.com/M66B/FairEmail.git
140 lines
4.6 KiB
Java
140 lines
4.6 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2022 by Marcel Bokhorst (M66B)
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*/
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import android.accounts.Account;
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import android.accounts.AccountManager;
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import android.accounts.AuthenticatorException;
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import android.accounts.OperationCanceledException;
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import android.content.Context;
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import androidx.annotation.NonNull;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.IOException;
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import java.util.Date;
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import java.util.Objects;
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public class GmailState {
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private String token;
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private long acquired;
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static final String TYPE_GOOGLE = "com.google";
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private static final long TOKEN_LIFETIME = 45 * 60 * 1000L; // milliseconds
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private GmailState(String token, long acquired) {
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this.token = token;
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this.acquired = acquired;
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}
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@NonNull
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String getAccessToken() throws AuthenticatorException {
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if (token == null)
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throw new AuthenticatorException("no token");
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return token;
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}
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Long getAccessTokenExpirationTime() {
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if (token == null || acquired == 0)
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return null;
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else
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return acquired + TOKEN_LIFETIME;
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}
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void refresh(@NonNull Context context, @NonNull String user, boolean expire, long keep_alive)
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throws AuthenticatorException, OperationCanceledException, IOException {
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Long expiration = getAccessTokenExpirationTime();
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if (expiration != null && expiration - keep_alive < new Date().getTime()) {
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EntityLog.log(context, "Force invalidation" +
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" expiration=" + new Date(expiration) +
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" keep-alive=" + (keep_alive / 60 / 1000) + "m");
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expire = true;
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}
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if (expire)
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try {
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if (token != null) {
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EntityLog.log(context, "Invalidating token user=" + user);
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AccountManager am = AccountManager.get(context);
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am.invalidateAuthToken(TYPE_GOOGLE, token);
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}
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token = null;
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acquired = 0;
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} catch (Throwable ex) {
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Log.e(ex);
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}
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Account account = getAccount(context, user);
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if (account == null)
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throw new AuthenticatorException("Account not found for " + user);
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EntityLog.log(context, "Getting token user=" + user);
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AccountManager am = AccountManager.get(context);
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String newToken = am.blockingGetAuthToken(
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account,
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ServiceAuthenticator.getAuthTokenType(TYPE_GOOGLE),
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true);
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if (newToken != null && !newToken.equals(token)) {
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token = newToken;
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acquired = new Date().getTime();
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}
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if (token == null)
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throw new AuthenticatorException("No token for " + user);
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}
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static Account getAccount(Context context, String user) {
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AccountManager am = AccountManager.get(context);
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if (am == null)
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return null;
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Account[] accounts = am.getAccountsByType(TYPE_GOOGLE);
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for (Account account : accounts)
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if (Objects.equals(account.name, user))
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return account;
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return null;
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}
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public String jsonSerializeString() {
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try {
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JSONObject jobject = new JSONObject();
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jobject.put("token", token);
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jobject.put("acquired", acquired);
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return jobject.toString();
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} catch (JSONException ex) {
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Log.e(ex);
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return null;
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}
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}
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static GmailState jsonDeserialize(@NonNull String password) {
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try {
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JSONObject jobject = new JSONObject(password);
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String token = jobject.getString("token");
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long acquired = jobject.getLong("acquired");
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return new GmailState(token, acquired);
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} catch (JSONException ex) {
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return new GmailState(password, new Date().getTime());
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}
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}
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}
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