src/main/java/net/pterodactylus/sonitus/data/sink/Icecast2Sink.java

   1 /*
   2  * Sonitus - Icecast2Sink.java - Copyright © 2013 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.sonitus.data.sink;
  19
  20 import java.io.IOException;
  21 import java.io.InputStream;
  22 import java.io.OutputStream;
  23 import java.io.UnsupportedEncodingException;
  24 import java.net.Socket;
  25 import java.net.URLEncoder;
  26 import java.util.Collections;
  27 import java.util.List;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sonitus.data.Controller;
  32 import net.pterodactylus.sonitus.data.Metadata;
  33 import net.pterodactylus.sonitus.data.Sink;
  34 import net.pterodactylus.sonitus.data.event.MetadataUpdated;
  35 import net.pterodactylus.sonitus.io.InputStreamDrainer;
  36
  37 import com.google.common.eventbus.EventBus;
  38 import com.google.common.io.BaseEncoding;
  39 import com.google.common.io.Closeables;
  40
  41 /**
  42  * {@link net.pterodactylus.sonitus.data.Sink} implementation that delivers all
  43  * incoming data to an Icecast2 server.
  44  *
  45  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  46  */
  47 public class Icecast2Sink implements Sink {
  48
  49         /** The logger. */
  50         private static final Logger logger = Logger.getLogger(Icecast2Sink.class.getName());
  51
  52         /** The event bus. */
  53         private final EventBus eventBus;
  54
  55         /** The server name. */
  56         private final String server;
  57
  58         /** The port number on the server. */
  59         private final int port;
  60
  61         /** The source password. */
  62         private final String password;
  63
  64         /** The stream mount point (without leading slash). */
  65         private final String mountPoint;
  66
  67         /** The name of the server. */
  68         private final String serverName;
  69
  70         /** The description of the server. */
  71         private final String serverDescription;
  72
  73         /** The genre of the server. */
  74         private final String genre;
  75
  76         /** Whether to publish the server. */
  77         private final boolean publishServer;
  78
  79         /** The output stream to the server. */
  80         private OutputStream socketOutputStream;
  81
  82         /** The current metadata. */
  83         private Metadata metadata;
  84
  85         /**
  86          * Creates a new Icecast2 sink.
  87          *
  88          * @param eventBus
  89          *              The event bus
  90          * @param server
  91          *              The hostname of the server
  92          * @param port
  93          *              The port number of the server
  94          * @param password
  95          *              The source password
  96          * @param mountPoint
  97          *              The stream mount point
  98          * @param serverName
  99          *              The name of the server
 100          * @param serverDescription
 101          *              The description of the server
 102          * @param genre
 103          *              The genre of the server
 104          * @param publishServer
 105          *              {@code true} to publish the server in a public directory, {@code false} to
 106          *              not publish it
 107          */
 108         public Icecast2Sink(EventBus eventBus, String server, int port, String password, String mountPoint, String serverName, String serverDescription, String genre, boolean publishServer) {
 109                 this.eventBus = eventBus;
 110                 this.server = server;
 111                 this.port = port;
 112                 this.password = password;
 113                 this.mountPoint = mountPoint;
 114                 this.serverName = serverName;
 115                 this.serverDescription = serverDescription;
 116                 this.genre = genre;
 117                 this.publishServer = publishServer;
 118         }
 119
 120         //
 121         // CONTROLLED METHODS
 122         //
 123
 124         @Override
 125         public String name() {
 126                 return String.format("icecast://%s:%d/%s", server, port, mountPoint);
 127         }
 128
 129         @Override
 130         public Metadata metadata() {
 131                 return metadata;
 132         }
 133
 134         @Override
 135         public List<Controller<?>> controllers() {
 136                 return Collections.emptyList();
 137         }
 138
 139         //
 140         // SINK METHODS
 141         //
 142
 143         @Override
 144         public void open(Metadata metadata) throws IOException {
 145                 logger.info(String.format("Connecting to %s:%d...", server, port));
 146                 Socket socket = new Socket(server, port);
 147                 logger.info("Connected.");
 148                 socketOutputStream = socket.getOutputStream();
 149                 InputStream socketInputStream = socket.getInputStream();
 150
 151                 sendLine(socketOutputStream, String.format("SOURCE /%s ICE/1.0", mountPoint));
 152                 sendLine(socketOutputStream, String.format("Authorization: Basic %s", generatePassword(password)));
 153                 sendLine(socketOutputStream, String.format("Content-Type: %s", getContentType(metadata)));
 154                 sendLine(socketOutputStream, String.format("ICE-Name: %s", serverName));
 155                 sendLine(socketOutputStream, String.format("ICE-Description: %s", serverDescription));
 156                 sendLine(socketOutputStream, String.format("ICE-Genre: %s", genre));
 157                 sendLine(socketOutputStream, String.format("ICE-Public: %d", publishServer ? 1 : 0));
 158                 sendLine(socketOutputStream, "");
 159                 socketOutputStream.flush();
 160
 161                 new Thread(new InputStreamDrainer(socketInputStream)).start();
 162
 163                 metadataUpdated(metadata);
 164         }
 165
 166         @Override
 167         public void close() {
 168                 try {
 169                         Closeables.close(socketOutputStream, true);
 170                 } catch (IOException e) {
 171                         /* will never throw. */
 172                 }
 173         }
 174
 175         @Override
 176         public void metadataUpdated(final Metadata metadata) {
 177                 this.metadata = metadata;
 178                 new Thread(new Runnable() {
 179
 180                         @Override
 181                         public void run() {
 182                                 String metadataString = String.format("%s (%s)", metadata.title(), "Sonitus");
 183                                 logger.info(String.format("Updating metadata to %s", metadataString));
 184
 185                                 Socket socket = null;
 186                                 OutputStream socketOutputStream = null;
 187                                 try {
 188                                         socket = new Socket(server, port);
 189                                         socketOutputStream = socket.getOutputStream();
 190
 191                                         sendLine(socketOutputStream, String.format("GET /admin/metadata?pass=%s&mode=updinfo&mount=/%s&song=%s HTTP/1.0", password, mountPoint, URLEncoder.encode(metadataString, "UTF-8")));
 192                                         sendLine(socketOutputStream, String.format("Authorization: Basic %s", generatePassword(password)));
 193                                         sendLine(socketOutputStream, String.format("User-Agent: Mozilla/Sonitus"));
 194                                         sendLine(socketOutputStream, "");
 195                                         socketOutputStream.flush();
 196
 197                                         new InputStreamDrainer(socket.getInputStream()).run();
 198                                 } catch (IOException ioe1) {
 199                                         logger.log(Level.WARNING, "Could not update metadata!", ioe1);
 200                                 } finally {
 201                                         try {
 202                                                 Closeables.close(socketOutputStream, true);
 203                                                 if (socket != null) {
 204                                                         socket.close();
 205                                                 }
 206                                         } catch (IOException ioe1) {
 207                                                 /* ignore. */
 208                                         }
 209                                 }
 210                         }
 211                 }).start();
 212                 eventBus.post(new MetadataUpdated(this, metadata));
 213         }
 214
 215         @Override
 216         public void process(byte[] buffer) throws IOException {
 217                 socketOutputStream.write(buffer);
 218                 socketOutputStream.flush();
 219         }
 220
 221         //
 222         // PRIVATE METHODS
 223         //
 224
 225         /**
 226          * Sends the given line, followed by CR+LF, to the given output stream,
 227          * encoding the complete line as UTF-8.
 228          *
 229          * @param outputStream
 230          *              The output stream to send the line to
 231          * @param line
 232          *              The line to send
 233          * @throws java.io.IOException
 234          *              if an I/O error occurs
 235          */
 236         private static void sendLine(OutputStream outputStream, String line) throws IOException {
 237                 outputStream.write((line + "\r\n").getBytes("UTF-8"));
 238         }
 239
 240         /**
 241          * Generates the Base64-encoded authorization information from the given
 242          * password. A fixed username of “source” is used.
 243          *
 244          * @param password
 245          *              The password to encode
 246          * @return The encoded password
 247          * @throws java.io.UnsupportedEncodingException
 248          *              if the UTF-8 encoding is not supported (which can never happen)
 249          */
 250         private static String generatePassword(String password) throws UnsupportedEncodingException {
 251                 return BaseEncoding.base64().encode(("source:" + password).getBytes("UTF-8"));
 252         }
 253
 254         /**
 255          * Returns a MIME type for the given metadata. Currently only Vorbis, MP3, PCM,
 256          * Ogg Vorbis, Opus, and FLAC formats are recognized.
 257          *
 258          * @param metadata
 259          *              The metadata to get a MIME type for
 260          * @return The MIME type of the metadata
 261          */
 262         private static String getContentType(Metadata metadata) {
 263                 String encoding = metadata.encoding();
 264                 if ("Vorbis".equalsIgnoreCase(encoding)) {
 265                         return "audio/ogg";
 266                 }
 267                 if ("MP3".equalsIgnoreCase(encoding)) {
 268                         return "audio/mpeg";
 269                 }
 270                 if ("PCM".equalsIgnoreCase(encoding)) {
 271                         return "audio/vnd.wave";
 272                 }
 273                 if ("Vorbis".equalsIgnoreCase(encoding)) {
 274                         return "application/ogg";
 275                 }
 276                 if ("Opus".equalsIgnoreCase(encoding)) {
 277                         return "audio/ogg; codecs=opus";
 278                 }
 279                 if ("FLAC".equalsIgnoreCase(encoding)) {
 280                         return "audio/flac";
 281                 }
 282                 return "application/octet-stream";
 283         }
 284
 285 }