1 /*
2 * Copyright (C) 2013 4th Line GmbH, Switzerland
3 *
4 * The contents of this file are subject to the terms of either the GNU
5 * Lesser General Public License Version 2 or later ("LGPL") or the
6 * Common Development and Distribution License Version 1 or later
7 * ("CDDL") (collectively, the "License"). You may not use this file
8 * except in compliance with the License. See LICENSE.txt for more
9 * information.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 */
15
16 package org.fourthline.cling.model.message.header;
17
18 import java.net.MalformedURLException;
19 import java.net.URISyntaxException;
20 import java.net.URL;
21 import java.util.ArrayList;
22 import java.util.List;
23 import java.util.logging.Level;
24 import java.util.logging.Logger;
25
26 /**
27 * @author Christian Bauer
28 */
29 public class CallbackHeader extends UpnpHeader<List<URL>> {
30
31 final private static Logger log = Logger.getLogger(CallbackHeader.class.getName());
32
33 public CallbackHeader() {
34 setValue(new ArrayList<URL>());
35 }
36
37 public CallbackHeader(List<URL> urls) {
38 this();
39 getValue().addAll(urls);
40 }
41
42 public CallbackHeader(URL url) {
43 this();
44 getValue().add(url);
45 }
46
47 public void setString(String s) throws InvalidHeaderException {
48
49 if (s.length() == 0) {
50 // Well, no callback URLs are not useful but we have to consider this state
51 return;
52 }
53
54 if (!s.contains("<") || !s.contains(">")) {
55 throw new InvalidHeaderException("URLs not in brackets: " + s);
56 }
57
58 s = s.replaceAll("<", "");
59 String[] split = s.split(">");
60 try {
61 List<URL> urls = new ArrayList<>();
62 for (String sp : split) {
63 sp = sp.trim();
64
65 if (!sp.startsWith("http://")) {
66 log.warning("Discarding non-http callback URL: " + sp);
67 continue;
68 }
69
70 URL url = new URL(sp);
71 try {
72 /*
73 On some platforms (Android...), a valid URL might not be a valid URI, so
74 we need to test for this and skip any invalid URI, e.g.
75
76 Java.net.URISyntaxException: Invalid % sequence: %wl in authority at index 32: http://[fe80::208:caff:fec4:824e%wlan0]:8485/eventSub
77 at libcore.net.UriCodec.validate(UriCodec.java:58)
78 at java.net.URI.parseURI(URI.java:394)
79 at java.net.URI.<init>(URI.java:204)
80 at java.net.URL.toURI(URL.java:497)
81 */
82 url.toURI();
83 } catch (URISyntaxException ex) {
84 log.log(Level.WARNING, "Discarding callback URL, not a valid URI on this platform: " + url, ex);
85 continue;
86 }
87
88 urls.add(url);
89 }
90 setValue(urls);
91 } catch (MalformedURLException ex) {
92 throw new InvalidHeaderException("Can't parse callback URLs from '" + s + "': " + ex);
93 }
94 }
95
96 public String getString() {
97 StringBuilder s = new StringBuilder();
98 for (URL url : getValue()) {
99 s.append("<").append(url.toString()).append(">");
100 }
101 return s.toString();
102 }
103 }