juick-www: now on spring-webmvc

1 files changed, 153 insertions, 0 deletions

diff --git a/juick-www/src/main/java/com/juick/www/controllers/FacebookLogin.java b/juick-www/src/main/java/com/juick/www/controllers/FacebookLogin.java
new file mode 100644
index 00000000..cc11f99a
--- /dev/null
+++ b/juick-www/src/main/java/com/juick/www/controllers/FacebookLogin.java
@@ -0,0 +1,153 @@
+/*
+ * Juick
+ * Copyright (C) 2008-2013, Ugnich Anton
+ *
+ * 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.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.juick.service.CrosspostService;
+import com.juick.service.UserService;
+import com.juick.www.Utils;
+import com.juick.www.facebook.Graph;
+import org.apache.commons.lang3.CharEncoding;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+
+import javax.inject.Inject;
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.UUID;
+
+/**
+ *
+ * @author Ugnich Anton
+ */
+@Controller
+public class FacebookLogin {
+
+    private static final Logger logger = LoggerFactory.getLogger(FacebookLogin.class);
+
+    private final String FACEBOOK_APPID;
+    private final String FACEBOOK_SECRET;
+    private final String FACEBOOK_REDIRECT = "http://juick.com/_fblogin";
+    private final ObjectMapper mapper;
+
+    @Inject
+    CrosspostService crosspostService;
+    @Inject
+    UserService userService;
+
+    @Inject
+    public FacebookLogin(Environment env) {
+        FACEBOOK_APPID = env.getProperty("facebook_appid");
+        FACEBOOK_SECRET = env.getProperty("facebook_secret");
+
+        mapper = new ObjectMapper();
+        mapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);
+        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+        mapper.setSerializationInclusion(JsonInclude.Include.NON_DEFAULT);
+    }
+
+    @RequestMapping(value = "/_fblogin", method = RequestMethod.GET)
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException {
+        String fbstate;
+
+        String code = request.getParameter("code");
+        if (StringUtils.isBlank(code)) {
+            fbstate = UUID.randomUUID().toString();
+
+            Cookie c = new Cookie("fbstate", fbstate);
+            response.addCookie(c);
+
+            response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
+            response.setHeader("Location", "https://www.facebook.com/dialog/oauth?scope=publish_stream&client_id=" + FACEBOOK_APPID + "&redirect_uri=" + URLEncoder.encode(FACEBOOK_REDIRECT, CharEncoding.UTF_8) + "&state=" + fbstate);
+            return;
+        }
+
+        fbstate = Utils.getCookie(request, "fbstate");
+        if (fbstate == null || fbstate.isEmpty() || !fbstate.equals(request.getParameter("state"))) {
+            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            return;
+        } else {
+            Cookie c = new Cookie("fbstate", "-");
+            c.setMaxAge(0);
+            response.addCookie(c);
+        }
+
+        String token = Utils.fetchURL("https://graph.facebook.com/oauth/access_token?client_id=" + FACEBOOK_APPID + "&redirect_uri=" + URLEncoder.encode(FACEBOOK_REDIRECT, CharEncoding.UTF_8) + "&client_secret=" + FACEBOOK_SECRET + "&code=" + URLEncoder.encode(code, CharEncoding.UTF_8));
+        if (token == null || token.isEmpty() || !token.startsWith("access_token=")) {
+            logger.error("FACEBOOK TOKEN ERROR: {}", token);
+            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+            return;
+        }
+        token = token.substring(13); // access_token=...
+        int tokenamp = token.indexOf('&'); // &expires=
+        if (tokenamp > 0) {
+            token = token.substring(0, tokenamp);
+        }
+
+        String graph = Utils.fetchURL("https://graph.facebook.com/me?access_token=" + token);
+        if (graph == null || graph.isEmpty()) {
+            logger.error("FACEBOOK GRAPH ERROR");
+            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+            return;
+        }
+
+        try {
+            Graph fb = mapper.readValue(graph, Graph.class);
+
+            long fbID = NumberUtils.toLong(fb.getId(), 0);
+            if (fbID == 0 || StringUtils.isBlank(fb.getName()) || StringUtils.isBlank(fb.getLink())) {
+                throw new Exception();
+            }
+
+            int uid = crosspostService.getUIDbyFBID(fbID);
+            if (uid > 0) {
+                if (!crosspostService.updateFacebookUser(fbID, token, fb.getName(), fb.getLink())) {
+                    throw new Exception();
+                }
+                Cookie c = new Cookie("hash", userService.getHashByUID(uid));
+                c.setMaxAge(50 * 24 * 60 * 60);
+                response.addCookie(c);
+                response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
+                response.setHeader("Location", "/");
+            } else if (fb.getVerified()) {
+                String loginhash = UUID.randomUUID().toString();
+                if (!crosspostService.createFacebookUser(fbID, loginhash, token, fb.getName(), fb.getLink())) {
+                    throw new Exception();
+                }
+                response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
+                response.setHeader("Location", "/signup?type=fb&hash=" + loginhash);
+            } else {
+                throw new Exception();
+            }
+        } catch (Exception e) {
+            logger.error("fb error", e);
+            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+            return;
+        }
+    }
+}