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