♻️ Add L10n to FreenetRequest, WebInterface to SoneRequest
[Sone.git] / src / main / java / net / pterodactylus / sone / web / page / PageToadlet.java
1 /*
2  * Sone - PageToadlet.java - Copyright © 2010–2019 David Roden
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17
18 package net.pterodactylus.sone.web.page;
19
20 import java.io.IOException;
21 import java.io.OutputStream;
22 import java.net.URI;
23
24 import net.pterodactylus.sone.utils.AutoCloseableBucket;
25 import net.pterodactylus.util.web.Header;
26 import net.pterodactylus.util.web.Method;
27 import net.pterodactylus.util.web.Page;
28 import net.pterodactylus.util.web.Response;
29
30 import freenet.client.HighLevelSimpleClient;
31 import freenet.clients.http.LinkEnabledCallback;
32 import freenet.clients.http.LinkFilterExceptedToadlet;
33 import freenet.clients.http.Toadlet;
34 import freenet.clients.http.ToadletContext;
35 import freenet.clients.http.ToadletContextClosedException;
36 import freenet.l10n.NodeL10n;
37 import freenet.support.MultiValueTable;
38 import freenet.support.api.HTTPRequest;
39
40 /**
41  * {@link Toadlet} implementation that is wrapped around a {@link Page}.
42  */
43 public class PageToadlet extends Toadlet implements LinkEnabledCallback, LinkFilterExceptedToadlet {
44
45         /** The name of the menu item. */
46         private final String menuName;
47
48         /** The page that handles processing. */
49         private final Page<FreenetRequest> page;
50
51         /** The path prefix for the page. */
52         private final String pathPrefix;
53
54         /**
55          * Creates a new toadlet that hands off processing to a {@link Page}.
56          *
57          * @param highLevelSimpleClient
58          *            The high-level simple client
59          * @param menuName
60          *            The name of the menu item
61          * @param page
62          *            The page to handle processing
63          * @param pathPrefix
64          *            Prefix that is prepended to all {@link Page#getPath()} return
65          *            values
66          */
67         protected PageToadlet(HighLevelSimpleClient highLevelSimpleClient, String menuName, Page<FreenetRequest> page, String pathPrefix) {
68                 super(highLevelSimpleClient);
69                 this.menuName = menuName;
70                 this.page = page;
71                 this.pathPrefix = pathPrefix;
72         }
73
74         /**
75          * Returns the name to display in the menu.
76          *
77          * @return The name in the menu
78          */
79         public String getMenuName() {
80                 return menuName;
81         }
82
83         /**
84          * {@inheritDoc}
85          */
86         @Override
87         public String path() {
88                 return pathPrefix + page.getPath();
89         }
90
91         /**
92          * Handles a HTTP GET request.
93          *
94          * @param uri
95          *            The URI of the request
96          * @param httpRequest
97          *            The HTTP request
98          * @param toadletContext
99          *            The toadlet context
100          * @throws IOException
101          *             if an I/O error occurs
102          * @throws ToadletContextClosedException
103          *             if the toadlet context is closed
104          */
105         public void handleMethodGET(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
106                 handleRequest(new FreenetRequest(uri, Method.GET, httpRequest, toadletContext, NodeL10n.getBase()));
107         }
108
109         /**
110          * Handles a HTTP POST request.
111          *
112          * @param uri
113          *            The URI of the request
114          * @param httpRequest
115          *            The HTTP request
116          * @param toadletContext
117          *            The toadlet context
118          * @throws IOException
119          *             if an I/O error occurs
120          * @throws ToadletContextClosedException
121          *             if the toadlet context is closed
122          */
123         public void handleMethodPOST(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
124                 handleRequest(new FreenetRequest(uri, Method.POST, httpRequest, toadletContext, NodeL10n.getBase()));
125         }
126
127         /**
128          * {@inheritDoc}
129          */
130         @Override
131         public String toString() {
132                 return getClass().getName() + "[path=" + path() + ",page=" + page + "]";
133         }
134
135         /**
136          * Handles a HTTP request.
137          *
138          * @param pageRequest
139          *            The request to handle
140          * @throws IOException
141          *             if an I/O error occurs
142          * @throws ToadletContextClosedException
143          *             if the toadlet context is closed
144          */
145         private void handleRequest(FreenetRequest pageRequest) throws IOException, ToadletContextClosedException {
146                 try (AutoCloseableBucket pageBucket = new AutoCloseableBucket(pageRequest.getToadletContext().getBucketFactory().makeBucket(-1));
147                      OutputStream pageBucketOutputStream = pageBucket.getBucket().getOutputStream()) {
148                         Response pageResponse = page.handleRequest(pageRequest, new Response(pageBucketOutputStream));
149                         MultiValueTable<String, String> headers = new MultiValueTable<>();
150                         if (pageResponse.getHeaders() != null) {
151                                 for (Header header : pageResponse.getHeaders()) {
152                                         for (String value : header) {
153                                                 headers.put(header.getName(), value);
154                                         }
155                                 }
156                         }
157                         writeReply(pageRequest.getToadletContext(), pageResponse.getStatusCode(), pageResponse.getContentType(), pageResponse.getStatusText(), headers, pageBucket.getBucket());
158                 }
159         }
160
161         /**
162          * {@inheritDoc}
163          */
164         @Override
165         public boolean isEnabled(ToadletContext toadletContext) {
166                 if (page instanceof LinkEnabledCallback) {
167                         return ((LinkEnabledCallback) page).isEnabled(toadletContext);
168                 }
169                 return true;
170         }
171
172         //
173         // LINKFILTEREXCEPTEDTOADLET METHODS
174         //
175
176         /**
177          * {@inheritDoc}
178          */
179         @Override
180         public boolean isLinkExcepted(URI link) {
181                 return (page instanceof FreenetPage) && ((FreenetPage) page).isLinkExcepted(link);
182         }
183
184 }