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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* 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 java.io.IOException;
import java.net.URLEncoder;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.UUID;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONObject;
/**
*
* @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(Connection 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(Connection sql, long fbID) {
int uid = 0;
PreparedStatement stmt = null;
ResultSet rs = null;
try {
stmt = sql.prepareStatement("SELECT user_id FROM facebook WHERE fb_id=? AND user_id IS NOT NULL");
stmt.setLong(1, fbID);
rs = stmt.executeQuery();
if (rs.first()) {
uid = rs.getInt(1);
}
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(rs, stmt);
}
return uid;
}
private boolean insertDB(Connection sql, long fbID, String loginhash, String token, String fbName, String fbLink) {
boolean ret = false;
PreparedStatement stmt = null;
try {
stmt = sql.prepareStatement("INSERT INTO facebook(fb_id,loginhash,access_token,fb_name,fb_link) VALUES (?,?,?,?,?)");
stmt.setLong(1, fbID);
stmt.setString(2, loginhash);
stmt.setString(3, token);
stmt.setString(4, fbName);
stmt.setString(5, fbLink);
stmt.executeUpdate();
ret = true;
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(null, stmt);
}
return ret;
}
private boolean updateDB(Connection sql, long fbID, String token, String fbName, String fbLink) {
boolean ret = false;
PreparedStatement stmt = null;
try {
stmt = sql.prepareStatement("UPDATE facebook SET access_token=?,fb_name=?,fb_link=? WHERE fb_id=?");
stmt.setString(1, token);
stmt.setString(2, fbName);
stmt.setString(3, fbLink);
stmt.setLong(4, fbID);
stmt.executeUpdate();
ret = true;
} catch (SQLException e) {
System.err.println(e);
} finally {
Utils.finishSQL(null, stmt);
}
return ret;
}
}
|
