1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
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.http.www;
import com.juick.server.UserQueries;
import org.json.JSONObject;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.UUID;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Ugnich Anton
*/
public class FacebookLogin {
private static final Logger logger = Logger.getLogger(FacebookLogin.class.getName());
private static final String FACEBOOK_APPID = "130568668304";
private static final String FACEBOOK_SECRET = "95813bfb6ab8f473410c50d4f971649e";
private static final String FACEBOOK_REDIRECT = "http://juick.com/_fblogin";
protected void doGet(JdbcTemplate sql, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String fbstate;
String code = request.getParameter("code");
if (code == null || code.equals("")) {
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, "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, "utf-8") + "&client_secret=" + FACEBOOK_SECRET + "&code=" + URLEncoder.encode(code, "utf-8"));
if (token == null || token.isEmpty() || !token.startsWith("access_token=")) {
logger.log(Level.SEVERE, "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()) {
System.err.println("FACEBOOK GRAPH ERROR");
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
try {
JSONObject json = new JSONObject(graph);
String fbIDStr = json.getString("id");
String fbName = json.getString("name");
String fbLink = json.getString("link");
boolean fbVerified = json.getBoolean("verified");
long fbID = 0;
if (fbIDStr != null && !fbIDStr.isEmpty()) {
fbID = Long.parseLong(fbIDStr);
}
if (fbID == 0 || fbName == null || fbLink == null || fbName.isEmpty() || fbLink.isEmpty()) {
throw new Exception();
}
int uid = getUIDbyFBID(sql, fbID);
if (uid > 0) {
if (!updateDB(sql, fbID, token, fbName, fbLink)) {
throw new Exception();
}
Cookie c = new Cookie("hash", UserQueries.getHashByUID(sql, uid));
c.setMaxAge(50 * 24 * 60 * 60);
response.addCookie(c);
response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
response.setHeader("Location", "/");
} else if (fbVerified) {
String loginhash = UUID.randomUUID().toString();
if (!insertDB(sql, fbID, loginhash, token, fbName, fbLink)) {
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.log(Level.WARNING, "fb error", e);
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
}
private int getUIDbyFBID(JdbcTemplate sql, long fbID) {
try {
return sql.queryForObject("SELECT user_id FROM facebook WHERE fb_id=? AND user_id IS NOT NULL",
Integer.class, fbID);
} catch (EmptyResultDataAccessException e) {
return 0;
}
}
private boolean insertDB(JdbcTemplate sql, long fbID, String loginhash, String token, String fbName, String fbLink) {
return sql.update("INSERT INTO facebook(fb_id,loginhash,access_token,fb_name,fb_link) VALUES (?,?,?,?,?)",
fbID, loginhash, token, fbName, fbLink) > 0;
}
private boolean updateDB(JdbcTemplate sql, long fbID, String token, String fbName, String fbLink) {
return sql.update("UPDATE facebook SET access_token=?,fb_name=?,fb_link=? WHERE fb_id=?",
token, fbName, fbLink, fbID) > 0;
}
}
|
