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