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/*
* Copyright (C) 2008-2017, Juick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.www.controllers;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.scribejava.apis.VkontakteApi;
import com.github.scribejava.core.builder.ServiceBuilder;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;
import com.juick.server.util.HttpBadRequestException;
import com.juick.service.CrosspostService;
import com.juick.service.UserService;
import com.juick.www.Utils;
import com.juick.www.vk.UsersResponse;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
/**
* @author Ugnich Anton
*/
@Controller
public class VKontakteLogin {
private static final Logger logger = LoggerFactory.getLogger(VKontakteLogin.class);
@Value("${vk_appid}")
private String VK_APPID;
@Value("${vk_secret}")
private String VK_SECRET;
private static final String VK_REDIRECT = "http://juick.com/_vklogin";
@Inject
private CrosspostService crosspostService;
@Inject
private UserService userService;
private ServiceBuilder serviceBuilder;
@PostConstruct
public void init() {
serviceBuilder = new ServiceBuilder(VK_APPID);
}
@Inject
private ObjectMapper jsonMapper;
@GetMapping("/_vklogin")
protected String doGet(HttpServletRequest request,
@RequestParam(required = false) String code,
@RequestParam(required = false) String state,
@CookieValue(required = false) String vkstate,
HttpServletResponse response) throws IOException, ExecutionException, InterruptedException {
if (StringUtils.isBlank(code)) {
vkstate = UUID.randomUUID().toString();
Cookie c = new Cookie("vkstate", vkstate);
response.addCookie(c);
OAuth20Service vkAuthService = serviceBuilder
.apiSecret(VK_SECRET)
.scope("friends,wall,offline")
.state(vkstate)
.callback(VK_REDIRECT)
.build(VkontakteApi.instance());
return "redirect:" + vkAuthService.getAuthorizationUrl();
}
if (StringUtils.isBlank(vkstate) || !vkstate.equals(state)) {
throw new HttpBadRequestException();
} else {
Cookie c = new Cookie("vkstate", "-");
c.setMaxAge(0);
response.addCookie(c);
}
OAuth20Service vkService = serviceBuilder
.apiKey(VK_APPID)
.apiSecret(VK_SECRET)
.build(VkontakteApi.instance());
OAuth2AccessToken token = vkService.getAccessToken(code);
OAuthRequest meRequest = new OAuthRequest(Verb.GET, "https://api.vk.com/method/users.get?fields=screen_name");
vkService.signRequest(token, meRequest);
String graph = vkService.execute(meRequest).getBody();
com.juick.www.vk.User jsonUser = jsonMapper.readValue(graph, UsersResponse.class).getUsers().get(0);
String vkName = jsonUser.getFirstName() + " " + jsonUser.getLastName();
String vkLink = jsonUser.getScreenName();
if (vkName.length() == 1 || StringUtils.isBlank(vkLink)) {
logger.error("vk user error");
throw new HttpBadRequestException();
}
Long vkID = NumberUtils.toLong(jsonUser.getUid(), 0);
int uid = crosspostService.getUIDbyVKID(vkID);
if (uid > 0) {
Cookie c = new Cookie("hash", userService.getHashByUID(uid));
c.setMaxAge(50 * 24 * 60 * 60);
response.addCookie(c);
return Utils.getPreviousPageByRequest(request).orElse("redirect:/");
} else {
String loginhash = UUID.randomUUID().toString();
if (!crosspostService.createVKUser(vkID, loginhash, token.getAccessToken(), vkName, vkLink)) {
logger.error("create vk user error");
throw new HttpBadRequestException();
}
return "redirect:/signup?type=vk&hash=" + loginhash;
}
}
}
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