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.logging.Level;
  28 import java.util.logging.Logger;
  29
  30 import net.pterodactylus.sonitus.data.Metadata;
  31 import net.pterodactylus.sonitus.data.Sink;
  32 import net.pterodactylus.sonitus.io.InputStreamDrainer;
  33
  34 import com.google.common.base.Function;
  35 import com.google.common.base.Joiner;
  36 import com.google.common.base.Optional;
  37 import com.google.common.collect.FluentIterable;
  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 server name. */
  53         private final String server;
  54
  55         /** The port number on the server. */
  56         private final int port;
  57
  58         /** The source password. */
  59         private final String password;
  60
  61         /** The stream mount point (without leading slash). */
  62         private final String mountPoint;
  63
  64         /** The name of the server. */
  65         private final String serverName;
  66
  67         /** The description of the server. */
  68         private final String serverDescription;
  69
  70         /** The genre of the server. */
  71         private final String genre;
  72
  73         /** Whether to publish the server. */
  74         private final boolean publishServer;
  75
  76         private OutputStream socketOutputStream;
  77
  78         /**
  79          * Creates a new Icecast2 sink.
  80          *
  81          * @param server
  82          *              The hostname of the server
  83          * @param port
  84          *              The port number of the server
  85          * @param password
  86          *              The source password
  87          * @param mountPoint
  88          *              The stream mount point
  89          * @param serverName
  90          *              The name of the server
  91          * @param serverDescription
  92          *              The description of the server
  93          * @param genre
  94          *              The genre of the server
  95          * @param publishServer
  96          *              {@code true} to publish the server in a public directory, {@code false} to
  97          *              not publish it
  98          */
  99         public Icecast2Sink(String server, int port, String password, String mountPoint, String serverName, String serverDescription, String genre, boolean publishServer) {
 100                 this.server = server;
 101                 this.port = port;
 102                 this.password = password;
 103                 this.mountPoint = mountPoint;
 104                 this.serverName = serverName;
 105                 this.serverDescription = serverDescription;
 106                 this.genre = genre;
 107                 this.publishServer = publishServer;
 108         }
 109
 110         //
 111         // SINK METHODS
 112         //
 113
 114         @Override
 115         public void open(Metadata metadata) throws IOException {
 116                 logger.info(String.format("Connecting to %s:%d...", server, port));
 117                 Socket socket = new Socket(server, port);
 118                 logger.info("Connected.");
 119                 socketOutputStream = socket.getOutputStream();
 120                 InputStream socketInputStream = socket.getInputStream();
 121
 122                 sendLine(socketOutputStream, String.format("SOURCE /%s ICE/1.0", mountPoint));
 123                 sendLine(socketOutputStream, String.format("Authorization: Basic %s", generatePassword(password)));
 124                 sendLine(socketOutputStream, String.format("Content-Type: %s", getContentType(metadata)));
 125                 sendLine(socketOutputStream, String.format("ICE-Name: %s", serverName));
 126                 sendLine(socketOutputStream, String.format("ICE-Description: %s", serverDescription));
 127                 sendLine(socketOutputStream, String.format("ICE-Genre: %s", genre));
 128                 sendLine(socketOutputStream, String.format("ICE-Public: %d", publishServer ? 1 : 0));
 129                 sendLine(socketOutputStream, "");
 130                 socketOutputStream.flush();
 131
 132                 new Thread(new InputStreamDrainer(socketInputStream)).start();
 133
 134                 metadataUpdated(metadata);
 135         }
 136
 137         @Override
 138         public void close() {
 139                 try {
 140                         Closeables.close(socketOutputStream, true);
 141                 } catch (IOException e) {
 142                         /* will never throw. */
 143                 }
 144         }
 145
 146         @Override
 147         public void metadataUpdated(final Metadata metadata) {
 148                 new Thread(new Runnable() {
 149
 150                         @Override
 151                         public void run() {
 152                                 String metadataString = String.format("%s (%s)", Joiner.on(" - ").skipNulls().join(FluentIterable.from(Arrays.asList(metadata.artist(), metadata.name())).transform(new Function<Optional<String>, Object>() {
 153
 154                                         @Override
 155                                         public Object apply(Optional<String> input) {
 156                                                 return input.orNull();
 157                                         }
 158                                 })), "Sonitus");
 159                                 logger.info(String.format("Updating metadata to %s", metadataString));
 160
 161                                 Socket socket = null;
 162                                 OutputStream socketOutputStream = null;
 163                                 try {
 164                                         socket = new Socket(server, port);
 165                                         socketOutputStream = socket.getOutputStream();
 166
 167                                         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")));
 168                                         sendLine(socketOutputStream, String.format("Authorization: Basic %s", generatePassword(password)));
 169                                         sendLine(socketOutputStream, String.format("User-Agent: Mozilla/Sonitus"));
 170                                         sendLine(socketOutputStream, "");
 171                                         socketOutputStream.flush();
 172
 173                                         new InputStreamDrainer(socket.getInputStream()).run();
 174                                 } catch (IOException ioe1) {
 175                                         logger.log(Level.WARNING, "Could not update metadata!", ioe1);
 176                                 } finally {
 177                                         try {
 178                                                 Closeables.close(socketOutputStream, true);
 179                                                 if (socket != null) {
 180                                                         socket.close();
 181                                                 }
 182                                         } catch (IOException ioe1) {
 183                                                 /* ignore. */
 184                                         }
 185                                 }
 186                         }
 187                 }).start();
 188         }
 189
 190         @Override
 191         public void process(byte[] buffer) throws IOException {
 192                 socketOutputStream.write(buffer);
 193                 socketOutputStream.flush();
 194         }
 195
 196         //
 197         // PRIVATE METHODS
 198         //
 199
 200         /**
 201          * Sends the given line, followed by CR+LF, to the given output stream,
 202          * encoding the complete line as UTF-8.
 203          *
 204          * @param outputStream
 205          *              The output stream to send the line to
 206          * @param line
 207          *              The line to send
 208          * @throws java.io.IOException
 209          *              if an I/O error occurs
 210          */
 211         private static void sendLine(OutputStream outputStream, String line) throws IOException {
 212                 outputStream.write((line + "\r\n").getBytes("UTF-8"));
 213         }
 214
 215         /**
 216          * Generates the Base64-encoded authorization information from the given
 217          * password. A fixed username of “source” is used.
 218          *
 219          * @param password
 220          *              The password to encode
 221          * @return The encoded password
 222          * @throws java.io.UnsupportedEncodingException
 223          *              if the UTF-8 encoding is not supported (which can never happen)
 224          */
 225         private static String generatePassword(String password) throws UnsupportedEncodingException {
 226                 return BaseEncoding.base64().encode(("source:" + password).getBytes("UTF-8"));
 227         }
 228
 229         /**
 230          * Returns a MIME type for the given metadata. Currently only Vorbis, MP3, and
 231          * PCM formats are recognized.
 232          *
 233          * @param metadata
 234          *              The metadata to get a MIME type for
 235          * @return The MIME type of the metadata
 236          */
 237         private static String getContentType(Metadata metadata) {
 238                 String encoding = metadata.encoding();
 239                 if ("Vorbis".equalsIgnoreCase(encoding)) {
 240                         return "audio/ogg";
 241                 }
 242                 if ("MP3".equalsIgnoreCase(encoding)) {
 243                         return "audio/mpeg";
 244                 }
 245                 if ("PCM".equalsIgnoreCase(encoding)) {
 246                         return "audio/vnd.wave";
 247                 }
 248                 return "application/octet-stream";
 249         }
 250
 251 }