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 static com.google.common.base.Preconditions.*;
  21
  22 import java.io.IOException;
  23 import java.io.InputStream;
  24 import java.io.OutputStream;
  25 import java.io.UnsupportedEncodingException;
  26 import java.net.Socket;
  27 import java.net.URLEncoder;
  28 import java.util.Arrays;
  29 import java.util.logging.Level;
  30 import java.util.logging.Logger;
  31
  32 import net.pterodactylus.sonitus.data.ConnectException;
  33 import net.pterodactylus.sonitus.data.Connection;
  34 import net.pterodactylus.sonitus.data.Metadata;
  35 import net.pterodactylus.sonitus.data.Sink;
  36 import net.pterodactylus.sonitus.data.Source;
  37 import net.pterodactylus.sonitus.io.InputStreamDrainer;
  38
  39 import com.google.common.base.Function;
  40 import com.google.common.base.Joiner;
  41 import com.google.common.base.Optional;
  42 import com.google.common.collect.FluentIterable;
  43 import com.google.common.io.BaseEncoding;
  44 import com.google.common.io.Closeables;
  45
  46 /**
  47  * {@link Sink} implementation that delivers all incoming data to an Icecast2
  48  * server.
  49  *
  50  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  51  */
  52 public class Icecast2Sink implements Sink {
  53
  54         /** The logger. */
  55         private static final Logger logger = Logger.getLogger(Icecast2Sink.class.getName());
  56
  57         /** The server name. */
  58         private final String server;
  59
  60         /** The port number on the server. */
  61         private final int port;
  62
  63         /** The source password. */
  64         private final String password;
  65
  66         /** The stream mount point (without leading slash). */
  67         private final String mountPoint;
  68
  69         /** The name of the server. */
  70         private final String serverName;
  71
  72         /** The description of the server. */
  73         private final String serverDescription;
  74
  75         /** The genre of the server. */
  76         private final String genre;
  77
  78         /** Whether to publish the server. */
  79         private final boolean publishServer;
  80
  81         /** The connected source. */
  82         private Source source;
  83
  84         /**
  85          * Creates a new Icecast2 sink.
  86          *
  87          * @param server
  88          *              The hostname of the server
  89          * @param port
  90          *              The port number of the server
  91          * @param password
  92          *              The source password
  93          * @param mountPoint
  94          *              The stream mount point
  95          * @param serverName
  96          *              The name of the server
  97          * @param serverDescription
  98          *              The description of the server
  99          * @param genre
 100          *              The genre of the server
 101          * @param publishServer
 102          *              {@code true} to publish the server in a public directory, {@code false} to
 103          *              not publish it
 104          */
 105         public Icecast2Sink(String server, int port, String password, String mountPoint, String serverName, String serverDescription, String genre, boolean publishServer) {
 106                 this.server = server;
 107                 this.port = port;
 108                 this.password = password;
 109                 this.mountPoint = mountPoint;
 110                 this.serverName = serverName;
 111                 this.serverDescription = serverDescription;
 112                 this.genre = genre;
 113                 this.publishServer = publishServer;
 114         }
 115
 116         //
 117         // SINK METHODS
 118         //
 119
 120         @Override
 121         public void connect(Source source) throws ConnectException {
 122                 checkNotNull(source, "source must not be null");
 123
 124                 this.source = source;
 125                 try {
 126                         logger.info(String.format("Icecast2Sink: Connecting to %s:%d...", server, port));
 127                         final Socket socket = new Socket(server, port);
 128                         logger.info("Icecast2Sink: Connected.");
 129                         final OutputStream socketOutputStream = socket.getOutputStream();
 130                         final InputStream socketInputStream = socket.getInputStream();
 131
 132                         sendLine(socketOutputStream, String.format("SOURCE /%s ICE/1.0", mountPoint));
 133                         sendLine(socketOutputStream, String.format("Authorization: Basic %s", generatePassword(password)));
 134                         sendLine(socketOutputStream, String.format("Content-Type: %s", getContentType(source.metadata())));
 135                         sendLine(socketOutputStream, String.format("ICE-Name: %s", serverName));
 136                         sendLine(socketOutputStream, String.format("ICE-Description: %s", serverDescription));
 137                         sendLine(socketOutputStream, String.format("ICE-Genre: %s", genre));
 138                         sendLine(socketOutputStream, String.format("ICE-Public: %d", publishServer ? 1 : 0));
 139                         sendLine(socketOutputStream, "");
 140                         socketOutputStream.flush();
 141
 142                         new Thread(new InputStreamDrainer(socketInputStream)).start();
 143                         new Thread(new Connection(source) {
 144
 145                                 private long counter;
 146
 147                                 @Override
 148                                 protected int bufferSize() {
 149                                         return 4096;
 150                                 }
 151
 152                                 @Override
 153                                 protected void feed(byte[] buffer) throws IOException {
 154                                         socketOutputStream.write(buffer);
 155                                         socketOutputStream.flush();
 156                                         counter += buffer.length;
 157                                         logger.finest(String.format("Wrote %d Bytes.", counter));
 158                                 }
 159
 160                                 @Override
 161                                 protected void finish() throws IOException {
 162                                         Closeables.close(socketOutputStream, true);
 163                                         Closeables.close(socket, true);
 164                                 }
 165                         }).start();
 166
 167                         metadataUpdated();
 168                 } catch (IOException ioe1) {
 169                         throw new ConnectException(ioe1);
 170                 }
 171         }
 172
 173         @Override
 174         public void metadataUpdated() {
 175                 Metadata metadata = source.metadata();
 176                 String metadataString = String.format("%s (%s)", Joiner.on(" - ").skipNulls().join(FluentIterable.from(Arrays.asList(metadata.artist(), metadata.name())).transform(new Function<Optional<String>, Object>() {
 177
 178                         @Override
 179                         public Object apply(Optional<String> input) {
 180                                 return input.orNull();
 181                         }
 182                 })), "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                                 Closeables.close(socket, true);
 204                         } catch (IOException ioe1) {
 205                                 /* ignore, will not happen. */
 206                         }
 207                 }
 208         }
 209
 210         //
 211         // PRIVATE METHODS
 212         //
 213
 214         /**
 215          * Sends the given line, followed by CR+LF, to the given output stream,
 216          * encoding the complete line as UTF-8.
 217          *
 218          * @param outputStream
 219          *              The output stream to send the line to
 220          * @param line
 221          *              The line to send
 222          * @throws IOException
 223          *              if an I/O error occurs
 224          */
 225         private static void sendLine(OutputStream outputStream, String line) throws IOException {
 226                 outputStream.write((line + "\r\n").getBytes("UTF-8"));
 227         }
 228
 229         /**
 230          * Generates the Base64-encoded authorization information from the given
 231          * password. A fixed username of “source” is used.
 232          *
 233          * @param password
 234          *              The password to encode
 235          * @return The encoded password
 236          * @throws UnsupportedEncodingException
 237          *              if the UTF-8 encoding is not supported (which can never happen)
 238          */
 239         private static String generatePassword(String password) throws UnsupportedEncodingException {
 240                 return BaseEncoding.base64().encode(("source:" + password).getBytes("UTF-8"));
 241         }
 242
 243         /**
 244          * Returns a MIME type for the given metadata. Currently only Vorbis, MP3, and
 245          * PCM formats are recognized.
 246          *
 247          * @param metadata
 248          *              The metadata to get a MIME type for
 249          * @return The MIME type of the metadata
 250          */
 251         private static String getContentType(Metadata metadata) {
 252                 String encoding = metadata.encoding();
 253                 if ("Vorbis".equalsIgnoreCase(encoding)) {
 254                         return "audio/ogg";
 255                 }
 256                 if ("MP3".equalsIgnoreCase(encoding)) {
 257                         return "audio/mpeg";
 258                 }
 259                 if ("PCM".equalsIgnoreCase(encoding)) {
 260                         return "audio/vnd.wave";
 261                 }
 262                 return "application/octet-stream";
 263         }
 264
 265 }