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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.gtask.remote;
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import android.accounts.Account;
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import android.accounts.AccountManager;
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import android.accounts.AccountManagerFuture;
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import android.app.Activity;
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import android.os.Bundle;
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import android.text.TextUtils;
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import android.util.Log;
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import net.micode.notes.gtask.data.Node;
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import net.micode.notes.gtask.data.Task;
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import net.micode.notes.gtask.data.TaskList;
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import net.micode.notes.gtask.exception.ActionFailureException;
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import net.micode.notes.gtask.exception.NetworkFailureException;
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import net.micode.notes.tool.GTaskStringUtils;
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import net.micode.notes.ui.NotesPreferenceActivity;
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import org.apache.http.HttpEntity;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.http.client.entity.UrlEncodedFormEntity;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.cookie.Cookie;
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import org.apache.http.impl.client.BasicCookieStore;
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import org.apache.http.impl.client.DefaultHttpClient;
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import org.apache.http.message.BasicNameValuePair;
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import org.apache.http.params.BasicHttpParams;
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import org.apache.http.params.HttpConnectionParams;
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import org.apache.http.params.HttpParams;
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import org.apache.http.params.HttpProtocolParams;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.Inflater;
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import java.util.zip.InflaterInputStream;
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// GTaskClient 类用于与 Google Tasks 进行交互，主要包含任务和任务列表的创建、删除、修改等操作
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public class GTaskClient {
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private static final String TAG = GTaskClient.class.getSimpleName();
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// 定义 GTASK 的 URL 地址
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private static final String GTASK_URL = "https://mail.google.com/tasks/";
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private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
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private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
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private static GTaskClient mInstance = null; // 单例对象
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private DefaultHttpClient mHttpClient; // HTTP 客户端
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private String mGetUrl; // GET 请求 URL
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private String mPostUrl; // POST 请求 URL
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private long mClientVersion; // 客户端版本
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private boolean mLoggedin; // 登录状态
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private long mLastLoginTime; // 上次登录时间
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private int mActionId; // 操作 ID，用于唯一标识每个操作
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private Account mAccount; // 当前登录的 Google 帐号
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private JSONArray mUpdateArray; // 更新操作数组
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// 私有化构造方法，避免外部实例化
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private GTaskClient() {
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mHttpClient = null;
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mGetUrl = GTASK_GET_URL;
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mPostUrl = GTASK_POST_URL;
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mClientVersion = -1;
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mLoggedin = false;
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mLastLoginTime = 0;
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mActionId = 1;
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mAccount = null;
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mUpdateArray = null;
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}
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// 单例模式获取 GTaskClient 实例
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public static synchronized GTaskClient getInstance() {
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if (mInstance == null) {
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mInstance = new GTaskClient();
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}
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return mInstance;
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}
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// 登录方法，返回是否成功
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public boolean login(Activity activity) {
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// 每 5 分钟重新登录一次
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final long interval = 1000 * 60 * 5;
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if (mLastLoginTime + interval < System.currentTimeMillis()) {
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mLoggedin = false;
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}
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// 如果切换了帐号，也需要重新登录
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if (mLoggedin && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity.getSyncAccountName(activity))) {
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mLoggedin = false;
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}
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if (mLoggedin) {
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Log.d(TAG, "已经登录");
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return true;
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}
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mLastLoginTime = System.currentTimeMillis();
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String authToken = loginGoogleAccount(activity, false);
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if (authToken == null) {
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Log.e(TAG, "Google 帐号登录失败");
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return false;
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}
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// 如果是自定义域名帐号，需要构建对应的 URL
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if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase().endsWith("googlemail.com"))) {
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StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
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int index = mAccount.name.indexOf('@') + 1;
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String suffix = mAccount.name.substring(index);
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url.append(suffix + "/");
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mGetUrl = url.toString() + "ig";
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mPostUrl = url.toString() + "r/ig";
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if (tryToLoginGtask(activity, authToken)) {
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mLoggedin = true;
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}
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}
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// 尝试使用 Google 官方 URL 登录
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if (!mLoggedin) {
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mGetUrl = GTASK_GET_URL;
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mPostUrl = GTASK_POST_URL;
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if (!tryToLoginGtask(activity, authToken)) {
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return false;
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}
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}
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mLoggedin = true;
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return true;
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}
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// 获取授权令牌
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private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
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String authToken;
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AccountManager accountManager = AccountManager.get(activity);
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Account[] accounts = accountManager.getAccountsByType("com.google");
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if (accounts.length == 0) {
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Log.e(TAG, "没有可用的 Google 帐号");
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return null;
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}
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// 根据设置中的帐号名称来选择帐户
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String accountName = NotesPreferenceActivity.getSyncAccountName(activity);
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Account account = null;
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for (Account a : accounts) {
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if (a.name.equals(accountName)) {
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account = a;
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break;
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}
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}
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if (account != null) {
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mAccount = account;
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} else {
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Log.e(TAG, "无法找到相同名称的帐户");
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return null;
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}
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// 获取授权令牌
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AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account, "goanna_mobile", null, activity, null, null);
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try {
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Bundle authTokenBundle = accountManagerFuture.getResult();
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authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN);
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if (invalidateToken) {
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accountManager.invalidateAuthToken("com.google", authToken);
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loginGoogleAccount(activity, false);
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}
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} catch (Exception e) {
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Log.e(TAG, "获取授权令牌失败");
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authToken = null;
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}
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return authToken;
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}
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// 尝试登录 Google 任务
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private boolean tryToLoginGtask(Activity activity, String authToken) {
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if (!loginGtask(authToken)) {
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// 如果授权令牌过期，重新登录
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authToken = loginGoogleAccount(activity, true);
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if (authToken == null) {
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Log.e(TAG, "Google 帐号登录失败");
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return false;
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}
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if (!loginGtask(authToken)) {
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Log.e(TAG, "登录 Google Tasks 失败");
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return false;
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}
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}
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return true;
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}
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// 通过授权令牌登录 Google Tasks
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private boolean loginGtask(String authToken) {
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int timeoutConnection = 10000;
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int timeoutSocket = 15000;
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HttpParams httpParameters = new BasicHttpParams();
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HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
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HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
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mHttpClient = new DefaultHttpClient(httpParameters);
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BasicCookieStore localBasicCookieStore = new BasicCookieStore();
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mHttpClient.setCookieStore(localBasicCookieStore);
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HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
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// 登录 Google 任务
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try {
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String loginUrl = mGetUrl + "?auth=" + authToken;
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HttpGet httpGet = new HttpGet(loginUrl);
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HttpResponse response = mHttpClient.execute(httpGet);
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// 获取 Cookie
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List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();
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boolean hasAuthCookie = false;
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for (Cookie cookie : cookies) {
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if (cookie.getName().contains("GTL")) {
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hasAuthCookie = true;
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}
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}
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if (!hasAuthCookie) {
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Log.w(TAG, "未找到授权 Cookie");
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}
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// 获取客户端版本
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String resString = getResponseContent(response.getEntity());
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String jsBegin = "_setup(";
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String jsEnd = ");";
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int beginIndex = resString.indexOf(jsBegin);
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int endIndex = resString.indexOf(jsEnd);
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if (beginIndex != -1 && endIndex != -1) {
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String jsonString = resString.substring(beginIndex + jsBegin.length(), endIndex);
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JSONObject jsonObject = new JSONObject(jsonString);
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mClientVersion = jsonObject.optLong("clientVersion", -1);
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}
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return true;
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} catch (Exception e) {
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Log.e(TAG, "登录失败：" + e.getMessage());
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return false;
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}
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}
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// 获取 HTTP 响应内容
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private String getResponseContent(HttpEntity entity) throws IOException {
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InputStream inputStream = entity.getContent();
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BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
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StringBuilder stringBuilder = new StringBuilder();
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String line;
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while ((line = bufferedReader.readLine()) != null) {
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stringBuilder.append(line).append("\n");
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}
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return stringBuilder.toString();
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}
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// 获取当前同步的 Google 帐号
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public Account getSyncAccount() {
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return mAccount;
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}
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// 获取已登录状态
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public boolean isLoggedin() {
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return mLoggedin;
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}
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}
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