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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.browser;
import org.apache.http.Header;
import org.apache.http.HeaderIterator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.util.EntityUtils;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.net.http.AndroidHttpClient;
import android.net.Uri;
import android.os.Bundle;
import android.webkit.CookieManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import java.util.StringTokenizer;
public class GoogleAccountLogin extends Thread implements
AccountManagerCallback<Bundle>, OnCancelListener {
// Url for issuing the uber token.
private Uri ISSUE_AUTH_TOKEN_URL = Uri.parse(
"https://www.google.com/accounts/IssueAuthToken?service=gaia&Session=false");
// Url for signing into a particular service.
private final static Uri TOKEN_AUTH_URL = Uri.parse(
"https://www.google.com/accounts/TokenAuth");
// Google account type
private final static String GOOGLE = "com.google";
private final Activity mActivity;
private final Account mAccount;
private final WebView mWebView;
private Runnable mRunnable;
// SID and LSID retrieval process.
private String mSid;
private String mLsid;
private int mState; // {NONE(0), SID(1), LSID(2)}
GoogleAccountLogin(Activity activity, String name) {
mActivity = activity;
mAccount = new Account(name, GOOGLE);
mWebView = new WebView(mActivity);
mWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
@Override
public void onPageFinished(WebView view, String url) {
done();
}
});
}
// Thread
@Override
public void run() {
String url = ISSUE_AUTH_TOKEN_URL.buildUpon()
.appendQueryParameter("SID", mSid)
.appendQueryParameter("LSID", mLsid)
.build().toString();
// Intentionally not using Proxy.
AndroidHttpClient client = AndroidHttpClient.newInstance(
mWebView.getSettings().getUserAgentString());
HttpPost request = new HttpPost(url);
String result = null;
try {
HttpResponse response = client.execute(request);
if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
done();
return;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
done();
return;
}
result = EntityUtils.toString(entity, "UTF-8");
} catch (Exception e) {
request.abort();
done();
return;
} finally {
client.close();
}
final String newUrl = TOKEN_AUTH_URL.buildUpon()
.appendQueryParameter("source", "android-browser")
.appendQueryParameter("auth", result)
.appendQueryParameter("continue",
BrowserSettings.getFactoryResetHomeUrl(mActivity))
.build().toString();
mActivity.runOnUiThread(new Runnable() {
@Override public void run() {
mWebView.loadUrl(newUrl);
}
});
}
// AccountManager callbacks.
@Override
public void run(AccountManagerFuture<Bundle> value) {
try {
String id = value.getResult().getString(
AccountManager.KEY_AUTHTOKEN);
switch (mState) {
default:
case 0:
throw new IllegalStateException(
"Impossible to get into this state");
case 1:
mSid = id;
mState = 2; // LSID
AccountManager.get(mActivity).getAuthToken(
mAccount, "LSID", null, mActivity, this, null);
break;
case 2:
mLsid = id;
this.start();
break;
}
} catch (Exception e) {
// For all exceptions load the original signin page.
// TODO: toast login failed?
done();
}
}
public void startLogin(Runnable runnable) {
mRunnable = runnable;
mState = 1; // SID
AccountManager.get(mActivity).getAuthToken(
mAccount, "SID", null, mActivity, this, null);
}
// Returns the account name passed in if the account exists, otherwise
// returns the default account.
public static String validateAccount(Context ctx, String name) {
Account[] accounts = getAccounts(ctx);
if (accounts.length == 0) {
return null;
}
if (name != null) {
// Make sure the account still exists.
for (Account a : accounts) {
if (a.name.equals(name)) {
return name;
}
}
}
// Return the first entry.
return accounts[0].name;
}
public static Account[] getAccounts(Context ctx) {
return AccountManager.get(ctx).getAccountsByType(GOOGLE);
}
// Checks for the presence of the SID cookie on google.com.
public static boolean isLoggedIn() {
String cookies = CookieManager.getInstance().getCookie(
"http://www.google.com");
if (cookies != null) {
StringTokenizer tokenizer = new StringTokenizer(cookies, ";");
while (tokenizer.hasMoreTokens()) {
String cookie = tokenizer.nextToken().trim();
if (cookie.startsWith("SID=")) {
return true;
}
}
}
return false;
}
// Used to indicate that the Browser should continue loading the main page.
// This can happen on success, error, or timeout.
private synchronized void done() {
if (mRunnable != null) {
mActivity.runOnUiThread(mRunnable);
mRunnable = null;
mWebView.destroy();
}
}
// Called by the progress dialog on startup.
public void onCancel(DialogInterface unused) {
done();
}
}
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