1
14
15 package com.liferay.portlet.social.util;
16
17 import com.liferay.portal.kernel.log.Log;
18 import com.liferay.portal.kernel.log.LogFactoryUtil;
19 import com.liferay.portal.kernel.util.GetterUtil;
20 import com.liferay.portal.kernel.util.Http;
21 import com.liferay.portal.kernel.util.StringBundler;
22 import com.liferay.portal.kernel.util.StringPool;
23 import com.liferay.portal.kernel.util.Validator;
24 import com.liferay.portal.util.Portal;
25
26 import javax.servlet.http.HttpServletRequest;
27
28
33 public class FacebookUtil {
34
35 public static final String FACEBOOK_APPS_URL = "http://apps.facebook.com/";
36
37 public static final String FACEBOOK_SERVLET_PATH = "/facebook/";
38
39 public static String getCallbackURL(
40 String fbmlPortletURL, String facebookCanvasPageURL) {
41
42 int pos = fbmlPortletURL.indexOf(
43 StringPool.SLASH, Http.HTTPS_WITH_SLASH.length());
44
45 StringBundler sb = new StringBundler(4);
46
47 sb.append(fbmlPortletURL.substring(0, pos));
48 sb.append(FACEBOOK_SERVLET_PATH);
49 sb.append(facebookCanvasPageURL);
50 sb.append(fbmlPortletURL.substring(pos));
51
52 String callbackURL = sb.toString();
53
54 if (!callbackURL.endsWith(StringPool.SLASH)) {
55 callbackURL += StringPool.SLASH;
56 }
57
58 return callbackURL;
59 }
60
61 public static String[] getFacebookData(HttpServletRequest request) {
62 String path = GetterUtil.getString(request.getPathInfo());
63
64 if (Validator.isNull(path)) {
65 return null;
66 }
67
68 int pos = path.indexOf(StringPool.SLASH, 1);
69
70 if (pos == -1) {
71 return null;
72 }
73
74 String facebookCanvasPageURL = path.substring(1, pos);
75
76 if (_log.isDebugEnabled()) {
77 _log.debug("Facebook canvas page URL " + facebookCanvasPageURL);
78 }
79
80 if (Validator.isNull(facebookCanvasPageURL)) {
81 return null;
82 }
83
84 String redirect = path.substring(pos);
85
86 if (_log.isDebugEnabled()) {
87 _log.debug("Redirect " + redirect);
88 }
89
90 if (Validator.isNull(redirect)) {
91 return null;
92 }
93
94 pos = path.indexOf(Portal.FRIENDLY_URL_SEPARATOR);
95
96 String appPath = StringPool.BLANK;
97
98 if (pos != -1) {
99 pos = path.indexOf(StringPool.SLASH, pos + 3);
100
101 if (pos != -1) {
102 appPath = path.substring(pos);
103 }
104 }
105
106 return new String[] {facebookCanvasPageURL, redirect, appPath};
107 }
108
109 public static boolean isFacebook(String currentURL) {
110 String path = currentURL;
111
112 if (currentURL.startsWith(Http.HTTP)) {
113 int pos = currentURL.indexOf(
114 StringPool.SLASH, Http.HTTPS_WITH_SLASH.length());
115
116 path = currentURL.substring(pos);
117 }
118
119 if (path.startsWith(FACEBOOK_SERVLET_PATH)) {
120 return true;
121 }
122 else {
123 return false;
124 }
125 }
126
127 private static Log _log = LogFactoryUtil.getLog(FacebookUtil.class);
128
129 }