Java tutorial
/** * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library 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 Lesser General Public License for more * details. */ package com.liferay.google; import com.google.api.client.auth.oauth2.Credential; import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow; import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeRequestUrl; import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest; import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets; import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse; import com.google.api.client.http.HttpTransport; import com.google.api.client.http.javanet.NetHttpTransport; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.services.oauth2.Oauth2; import com.google.api.services.oauth2.model.Userinfoplus; import com.liferay.portal.kernel.portlet.LiferayWindowState; import com.liferay.portal.kernel.struts.BaseStrutsAction; import com.liferay.portal.kernel.util.CalendarFactoryUtil; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.LocaleUtil; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.kernel.util.WebKeys; import com.liferay.portal.kernel.workflow.WorkflowConstants; import com.liferay.portal.model.Contact; import com.liferay.portal.model.User; import com.liferay.portal.model.UserGroupRole; import com.liferay.portal.service.ServiceContext; import com.liferay.portal.service.UserLocalServiceUtil; import com.liferay.portal.theme.ThemeDisplay; import com.liferay.portal.util.PortalUtil; import com.liferay.portal.util.PortletKeys; import com.liferay.portlet.PortletURLFactoryUtil; import org.apache.commons.lang3.StringUtils; import javax.portlet.PortletMode; import javax.portlet.PortletRequest; import javax.portlet.PortletURL; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.Arrays; import java.util.Calendar; import java.util.List; import java.util.Locale; /** * @author Sergio Gonzlez */ public class GoogleOAuth extends BaseStrutsAction { public String execute(HttpServletRequest request, HttpServletResponse response) throws Exception { ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); String cmd = ParamUtil.getString(request, Constants.CMD); String redirectUri = PortalUtil.getPortalURL(request) + _REDIRECT_URI; if (cmd.equals("login")) { GoogleAuthorizationCodeFlow flow = getFlow(); GoogleAuthorizationCodeRequestUrl googleAuthorizationCodeRequestUrl = flow.newAuthorizationUrl(); googleAuthorizationCodeRequestUrl.setRedirectUri(redirectUri); String url = googleAuthorizationCodeRequestUrl.build(); response.sendRedirect(url); } else if (cmd.equals("token")) { HttpSession session = request.getSession(); String code = ParamUtil.getString(request, "code"); if (Validator.isNotNull(code)) { Credential credential = exchangeCode(code, redirectUri); Userinfoplus userinfo = getUserInfo(credential); User user = setGoogleCredentials(session, themeDisplay.getCompanyId(), userinfo); if ((user != null) && (user.getStatus() == WorkflowConstants.STATUS_INCOMPLETE)) { redirectUpdateAccount(request, response, user); return null; } PortletURL portletURL = PortletURLFactoryUtil.create(request, PortletKeys.FAST_LOGIN, themeDisplay.getPlid(), PortletRequest.RENDER_PHASE); portletURL.setWindowState(LiferayWindowState.POP_UP); portletURL.setParameter("struts_action", "/login/login_redirect"); response.sendRedirect(portletURL.toString()); } } return null; } protected User addUser(HttpSession session, long companyId, Userinfoplus userinfo) throws Exception { long creatorUserId = 0; boolean autoPassword = true; String password1 = StringPool.BLANK; String password2 = StringPool.BLANK; boolean autoScreenName = true; String screenName = StringPool.BLANK; String emailAddress = userinfo.getEmail(); String openId = StringPool.BLANK; Locale locale = LocaleUtil.getDefault(); String firstName = userinfo.getGivenName(); String middleName = StringPool.BLANK; String lastName = userinfo.getFamilyName(); int prefixId = 0; int suffixId = 0; boolean male = Validator.equals(userinfo.getGender(), "male"); int birthdayMonth = Calendar.JANUARY; int birthdayDay = 1; int birthdayYear = 1970; String jobTitle = StringPool.BLANK; long[] groupIds = null; long[] organizationIds = null; long[] roleIds = null; long[] userGroupIds = null; boolean sendEmail = true; ServiceContext serviceContext = new ServiceContext(); User user = UserLocalServiceUtil.addUser(creatorUserId, companyId, autoPassword, password1, password2, autoScreenName, screenName, emailAddress, 0, openId, locale, firstName, middleName, lastName, prefixId, suffixId, male, birthdayMonth, birthdayDay, birthdayYear, jobTitle, groupIds, organizationIds, roleIds, userGroupIds, sendEmail, serviceContext); user = UserLocalServiceUtil.updateLastLogin(user.getUserId(), user.getLoginIP()); user = UserLocalServiceUtil.updatePasswordReset(user.getUserId(), false); user = UserLocalServiceUtil.updateEmailAddressVerified(user.getUserId(), true); session.setAttribute("GOOGLE_USER_EMAIL_ADDRESS", emailAddress); return user; } protected Credential exchangeCode(String authorizationCode, String redirectUri) throws CodeExchangeException { try { GoogleAuthorizationCodeFlow flow = getFlow(); GoogleAuthorizationCodeTokenRequest token = flow.newTokenRequest(authorizationCode); token.setRedirectUri(redirectUri); GoogleTokenResponse response = token.execute(); return flow.createAndStoreCredential(response, null); } catch (IOException e) { System.err.println("An error occurred: " + e); throw new CodeExchangeException(); } } protected GoogleAuthorizationCodeFlow getFlow() throws IOException { HttpTransport httpTransport = new NetHttpTransport(); JacksonFactory jsonFactory = new JacksonFactory(); String secretsLocation = PortalUtil.getPortalProperties().getProperty("google.client.secrets.location"); InputStream is = new FileInputStream(secretsLocation); GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(jsonFactory, new InputStreamReader(is)); GoogleAuthorizationCodeFlow.Builder builder = new GoogleAuthorizationCodeFlow.Builder(httpTransport, jsonFactory, clientSecrets, _SCOPES); builder.setAccessType("online"); builder.setApprovalPrompt("auto"); return builder.build(); } protected Userinfoplus getUserInfo(Credential credentials) throws NoSuchUserIdException { Oauth2.Builder builder = new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credentials); Oauth2 oauth2 = builder.build(); Userinfoplus userInfo = null; try { userInfo = oauth2.userinfo().get().execute(); } catch (IOException e) { System.err.println("An error occurred: " + e); } if ((userInfo != null) && (userInfo.getId() != null)) { return userInfo; } else { throw new NoSuchUserIdException(); } } protected void redirectUpdateAccount(HttpServletRequest request, HttpServletResponse response, User user) throws Exception { ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY); PortletURL portletURL = PortletURLFactoryUtil.create(request, PortletKeys.LOGIN, themeDisplay.getPlid(), PortletRequest.RENDER_PHASE); portletURL.setParameter("saveLastPath", Boolean.FALSE.toString()); portletURL.setParameter("struts_action", "/login/update_account"); PortletURL redirectURL = PortletURLFactoryUtil.create(request, PortletKeys.FAST_LOGIN, themeDisplay.getPlid(), PortletRequest.RENDER_PHASE); redirectURL.setParameter("struts_action", "/login/login_redirect"); redirectURL.setParameter("emailAddress", user.getEmailAddress()); redirectURL.setParameter("anonymousUser", Boolean.FALSE.toString()); redirectURL.setPortletMode(PortletMode.VIEW); redirectURL.setWindowState(LiferayWindowState.POP_UP); portletURL.setParameter("redirect", redirectURL.toString()); portletURL.setParameter("userId", String.valueOf(user.getUserId())); portletURL.setParameter("emailAddress", user.getEmailAddress()); portletURL.setParameter("firstName", user.getFirstName()); portletURL.setParameter("lastName", user.getLastName()); portletURL.setPortletMode(PortletMode.VIEW); portletURL.setWindowState(LiferayWindowState.POP_UP); response.sendRedirect(portletURL.toString()); } protected User setGoogleCredentials(HttpSession session, long companyId, Userinfoplus userinfo) throws Exception { if (userinfo == null) { return null; } User user = null; String emailAddress = userinfo.getEmail(); if ((user == null) && Validator.isNotNull(emailAddress)) { user = UserLocalServiceUtil.getUserByEmailAddress(companyId, emailAddress); if ((user != null) && (user.getStatus() != WorkflowConstants.STATUS_INCOMPLETE)) { session.setAttribute("GOOGLE_USER_EMAIL_ADDRESS", emailAddress); } } if (user != null) { if (user.getStatus() == WorkflowConstants.STATUS_INCOMPLETE) { session.setAttribute("GOOGLE_INCOMPLETE_USER_ID", userinfo.getId()); user.setEmailAddress(userinfo.getEmail()); user.setFirstName(userinfo.getGivenName()); user.setLastName(userinfo.getFamilyName()); return user; } user = updateUser(user, userinfo); } else { user = addUser(session, companyId, userinfo); } return user; } protected User updateUser(User user, Userinfoplus userinfo) throws Exception { String emailAddress = userinfo.getEmail(); String firstName = userinfo.getGivenName(); String lastName = userinfo.getFamilyName(); boolean male = Validator.equals(userinfo.getGender(), "male"); if (emailAddress.equals(user.getEmailAddress()) && firstName.equals(user.getFirstName()) && lastName.equals(user.getLastName()) && (male == user.isMale())) { return user; } Contact contact = user.getContact(); Calendar birthdayCal = CalendarFactoryUtil.getCalendar(); birthdayCal.setTime(contact.getBirthday()); int birthdayMonth = birthdayCal.get(Calendar.MONTH); int birthdayDay = birthdayCal.get(Calendar.DAY_OF_MONTH); int birthdayYear = birthdayCal.get(Calendar.YEAR); long[] groupIds = null; long[] organizationIds = null; long[] roleIds = null; List<UserGroupRole> userGroupRoles = null; long[] userGroupIds = null; ServiceContext serviceContext = new ServiceContext(); if (!StringUtils.equalsIgnoreCase(emailAddress, user.getEmailAddress())) { UserLocalServiceUtil.updateEmailAddress(user.getUserId(), StringPool.BLANK, emailAddress, emailAddress); } UserLocalServiceUtil.updateEmailAddressVerified(user.getUserId(), true); return UserLocalServiceUtil.updateUser(user.getUserId(), StringPool.BLANK, StringPool.BLANK, StringPool.BLANK, false, user.getReminderQueryQuestion(), user.getReminderQueryAnswer(), user.getScreenName(), emailAddress, 0, user.getOpenId(), user.getLanguageId(), user.getTimeZoneId(), user.getGreeting(), user.getComments(), firstName, user.getMiddleName(), lastName, contact.getPrefixId(), contact.getSuffixId(), male, birthdayMonth, birthdayDay, birthdayYear, contact.getSmsSn(), contact.getAimSn(), contact.getFacebookSn(), contact.getIcqSn(), contact.getJabberSn(), contact.getMsnSn(), contact.getMySpaceSn(), contact.getSkypeSn(), contact.getTwitterSn(), contact.getYmSn(), contact.getJobTitle(), groupIds, organizationIds, roleIds, userGroupRoles, userGroupIds, serviceContext); } private final String _CLIENT_SECRETS_LOCATION = "/client_secrets.json"; private final String _REDIRECT_URI = "/c/portal/google_login?cmd=token"; private final List<String> _SCOPES = Arrays.asList("https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile"); }