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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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public class GTaskClient {
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private static final String TAG = GTaskClient.class.getSimpleName();
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// Gtask 一般请求的URL
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private static final String GTASK_URL = "https://mail.google.com/tasks/";
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// Gtask get请求的URL
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private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
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// Gtask post请求的URL
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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;
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private DefaultHttpClient mHttpClient;
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private String mGetUrl;
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private String mPostUrl;
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private long mClientVersion;
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private boolean mLoggedin;
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private long mLastLoginTime;
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private int mActionId;
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private Account mAccount;
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private JSONArray mUpdateArray;
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// 构造函数，初始化各个变量
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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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// 提供与Google任务交互的方法
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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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// 检查用户是否已经登录使用
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// loginGoogleAccount()方法登录，该方法返回身份验证令牌。
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// 然后，如果用户有自定义域名，该方法尝试使用用户的自定义域名登录，如果失败，则尝试使用Google官方网址登录
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public boolean login(Activity activity) {
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// we suppose that the cookie would expire after 5 minutes
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// then we need to re-login
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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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// need to re-login after account switch
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if (mLoggedin
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&& !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
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.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, "already logged in");
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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, "login google account failed");
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return false;
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}
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// login with custom domain if necessary
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if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()
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.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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// try to login with google official url
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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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// 使用AccountManager类登录Google账户
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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, "there is no available google account");
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return null;
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}
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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, "unable to get an account with the same name in the settings");
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return null;
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}
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// get the token now
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AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,
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"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, "get auth token failed");
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authToken = null;
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}
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return authToken;
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}
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// 可能认证令牌已经过期，现在让我们使令牌无效并重试
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private boolean tryToLoginGtask(Activity activity, String authToken) {
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if (!loginGtask(authToken)) {
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// maybe the auth token is out of date, now let's invalidate the
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// token and try again
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authToken = loginGoogleAccount(activity, true);
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if (authToken == null) {
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Log.e(TAG, "login google account failed");
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return false;
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}
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if (!loginGtask(authToken)) {
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Log.e(TAG, "login gtask failed");
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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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// HttpClient类来登录Google任务
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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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// login gtask
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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 = null;
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response = mHttpClient.execute(httpGet);
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// get the cookie now
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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, "it seems that there is no auth cookie");
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}
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// get the client version
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String resString = getResponseContent(response.getEntity());
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String jsBegin = "_setup(";
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String jsEnd = ")}</script>";
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int begin = resString.indexOf(jsBegin);
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int end = resString.lastIndexOf(jsEnd);
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String jsString = null;
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if (begin != -1 && end != -1 && begin < end) {
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jsString = resString.substring(begin + jsBegin.length(), end);
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}
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JSONObject js = new JSONObject(jsString);
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mClientVersion = js.getLong("v");
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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return false;
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} catch (Exception e) {
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// simply catch all exceptions
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Log.e(TAG, "httpget gtask_url failed");
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return false;
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}
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return true;
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}
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private int getActionId() {
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return mActionId++;
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}
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// 创建Http服务
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private HttpPost createHttpPost() {
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HttpPost httpPost = new HttpPost(mPostUrl);
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httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
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httpPost.setHeader("AT", "1");
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return httpPost;
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}
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// 获取http请求，并且错误时抛出请求错误异常
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private String getResponseContent(HttpEntity entity) throws IOException {
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String contentEncoding = null;
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if (entity.getContentEncoding() != null) {
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contentEncoding = entity.getContentEncoding().getValue();
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Log.d(TAG, "encoding: " + contentEncoding);
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}
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InputStream input = entity.getContent();
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if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {
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input = new GZIPInputStream(entity.getContent());
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} else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {
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Inflater inflater = new Inflater(true);
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input = new InflaterInputStream(entity.getContent(), inflater);
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}
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try {
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InputStreamReader isr = new InputStreamReader(input);
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BufferedReader br = new BufferedReader(isr);
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StringBuilder sb = new StringBuilder();
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while (true) {
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String buff = br.readLine();
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if (buff == null) {
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return sb.toString();
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}
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sb = sb.append(buff);
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}
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} finally {
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input.close();
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}
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}
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// 获取post请求，错误时抛出网络异常请求
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private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
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if (!mLoggedin) {
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Log.e(TAG, "please login first");
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throw new ActionFailureException("not logged in");
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}
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HttpPost httpPost = createHttpPost();
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try {
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LinkedList<BasicNameValuePair> list = new LinkedList<BasicNameValuePair>();
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list.add(new BasicNameValuePair("r", js.toString()));
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UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
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httpPost.setEntity(entity);
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// execute the post
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HttpResponse response = mHttpClient.execute(httpPost);
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String jsString = getResponseContent(response.getEntity());
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return new JSONObject(jsString);
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} catch (ClientProtocolException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new NetworkFailureException("postRequest failed");
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} catch (IOException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new NetworkFailureException("postRequest failed");
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("unable to convert response content to jsonobject");
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} catch (Exception e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("error occurs when posting request");
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}
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}
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// 创建task请求，错误时抛出网络错误异常
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public void createTask(Task task) throws NetworkFailureException {
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commitUpdate();
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try {
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JSONObject jsPost = new JSONObject();
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JSONArray actionList = new JSONArray();
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// action_list
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actionList.put(task.getCreateAction(getActionId()));
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jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
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// client_version
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jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
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// post
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JSONObject jsResponse = postRequest(jsPost);
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JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
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GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
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task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("create task: handing jsonobject failed");
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}
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}
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// 创建tasklist请求，错误时抛出网络错误异常
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public void createTaskList(TaskList tasklist) throws NetworkFailureException {
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commitUpdate();
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try {
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JSONObject jsPost = new JSONObject();
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JSONArray actionList = new JSONArray();
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// action_list
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actionList.put(tasklist.getCreateAction(getActionId()));
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jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
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// client version
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jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
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// post
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JSONObject jsResponse = postRequest(jsPost);
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JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
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GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
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tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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throw new ActionFailureException("create tasklist: handing jsonobject failed");
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}
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}
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// 提交更新请求，抛出网络错误异常
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public void commitUpdate() throws NetworkFailureException {
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|
|
if (mUpdateArray != null) {
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
mUpdateArray = null;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("commit update: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// 添加更新节点，网络错误抛出异常
|
|
|
public void addUpdateNode(Node node) throws NetworkFailureException {
|
|
|
if (node != null) {
|
|
|
// too many update items may result in an error
|
|
|
// set max to 10 items
|
|
|
if (mUpdateArray != null && mUpdateArray.length() > 10) {
|
|
|
commitUpdate();
|
|
|
}
|
|
|
|
|
|
if (mUpdateArray == null)
|
|
|
mUpdateArray = new JSONArray();
|
|
|
mUpdateArray.put(node.getUpdateAction(getActionId()));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// 移动task操作
|
|
|
public void moveTask(Task task, TaskList preParent, TaskList curParent)
|
|
|
throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
JSONObject action = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
|
|
|
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
|
|
|
if (preParent == curParent && task.getPriorSibling() != null) {
|
|
|
// put prioring_sibing_id only if moving within the tasklist and
|
|
|
// it is not the first one
|
|
|
// 只有在任务列表中移动时才放置prioring_sibing_id，而且它不是第一个
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
|
|
|
}
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());
|
|
|
if (preParent != curParent) {
|
|
|
// put the dest_list only if moving between tasklists
|
|
|
|
|
|
// 只有在任务列表之间移动时才放置dest_list
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
|
|
|
}
|
|
|
actionList.put(action);
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
|
|
|
// 客户端版本
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("move task: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// 删除节点操作，当网络错误时抛出异常
|
|
|
public void deleteNode(Node node) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
|
|
|
// action_list
|
|
|
node.setDeleted(true);
|
|
|
actionList.put(node.getUpdateAction(getActionId()));
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
|
|
|
// 客户端版本
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
postRequest(jsPost);
|
|
|
mUpdateArray = null;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("delete node: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// 它首先检查用户是否已登录，如果没有则抛出异常。
|
|
|
// 然后它向一个URL发送HTTP GET请求以检索一个字符串响应
|
|
|
public JSONArray getTaskLists() throws NetworkFailureException {
|
|
|
if (!mLoggedin) {
|
|
|
Log.e(TAG, "please login first");
|
|
|
throw new ActionFailureException("not logged in");
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
HttpGet httpGet = new HttpGet(mGetUrl);
|
|
|
HttpResponse response = null;
|
|
|
response = mHttpClient.execute(httpGet);
|
|
|
|
|
|
// get the task list
|
|
|
String resString = getResponseContent(response.getEntity());
|
|
|
String jsBegin = "_setup(";
|
|
|
String jsEnd = ")}</script>";
|
|
|
int begin = resString.indexOf(jsBegin);
|
|
|
int end = resString.lastIndexOf(jsEnd);
|
|
|
String jsString = null;
|
|
|
if (begin != -1 && end != -1 && begin < end) {
|
|
|
jsString = resString.substring(begin + jsBegin.length(), end);
|
|
|
}
|
|
|
JSONObject js = new JSONObject(jsString);
|
|
|
return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS);
|
|
|
} catch (ClientProtocolException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new NetworkFailureException("gettasklists: httpget failed");
|
|
|
} catch (IOException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new NetworkFailureException("gettasklists: httpget failed");
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("get task lists: handing jasonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// 构造一个表示POST请求的JSONObject，包括要在任务列表上执行的操作数组，并将此请求发送到服务器
|
|
|
public JSONArray getTaskList(String listGid) throws NetworkFailureException {
|
|
|
commitUpdate();
|
|
|
try {
|
|
|
JSONObject jsPost = new JSONObject();
|
|
|
JSONArray actionList = new JSONArray();
|
|
|
JSONObject action = new JSONObject();
|
|
|
|
|
|
// action_list
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
|
|
|
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid);
|
|
|
action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false);
|
|
|
actionList.put(action);
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
|
|
|
|
|
|
// client_version
|
|
|
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
|
|
|
|
|
|
JSONObject jsResponse = postRequest(jsPost);
|
|
|
return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS);
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
throw new ActionFailureException("get task list: handing jsonobject failed");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// 该方法返回与该类实例关联的帐户对象
|
|
|
public Account getSyncAccount() {
|
|
|
return mAccount;
|
|
|
}
|
|
|
|
|
|
// 该方法将更新数组重置为null
|
|
|
public void resetUpdateArray() {
|
|
|
mUpdateArray = null;
|
|
|
}
|
|
|
} |
