src/main/java/net/pterodactylus/sone/freenet/Key.java

   1 package net.pterodactylus.sone.freenet;
   2
   3 import static freenet.support.Base64.encode;
   4 import static java.lang.String.format;
   5
   6 import freenet.keys.FreenetURI;
   7
   8 import com.google.common.annotations.VisibleForTesting;
   9
  10 /**
  11  * Encapsulates the parts of a {@link FreenetURI} that do not change while
  12  * being converted from SSK to USK and/or back.
  13  *
  14  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  15  */
  16 public class Key {
  17
  18         private final byte[] routingKey;
  19         private final byte[] cryptoKey;
  20         private final byte[] extra;
  21
  22         private Key(byte[] routingKey, byte[] cryptoKey, byte[] extra) {
  23                 this.routingKey = routingKey;
  24                 this.cryptoKey = cryptoKey;
  25                 this.extra = extra;
  26         }
  27
  28         @VisibleForTesting
  29         public String getRoutingKey() {
  30                 return encode(routingKey);
  31         }
  32
  33         @VisibleForTesting
  34         public String getCryptoKey() {
  35                 return encode(cryptoKey);
  36         }
  37
  38         @VisibleForTesting
  39         public String getExtra() {
  40                 return encode(extra);
  41         }
  42
  43         public FreenetURI toUsk(String docName, long edition, String... paths) {
  44                 return new FreenetURI("USK", docName, paths, routingKey, cryptoKey,
  45                                 extra, edition);
  46         }
  47
  48         public FreenetURI toSsk(String docName, String... paths) {
  49                 return new FreenetURI("SSK", docName, paths, routingKey, cryptoKey,
  50                                 extra);
  51         }
  52
  53         public FreenetURI toSsk(String docName, long edition, String... paths) {
  54                 return new FreenetURI("SSK", format("%s-%d", docName, edition), paths,
  55                                 routingKey, cryptoKey, extra, edition);
  56         }
  57
  58         public static Key from(FreenetURI freenetURI) {
  59                 return new Key(freenetURI.getRoutingKey(), freenetURI.getCryptoKey(),
  60                                 freenetURI.getExtra());
  61         }
  62
  63         public static String routingKey(FreenetURI freenetURI) {
  64                 return from(freenetURI).getRoutingKey();
  65         }
  66
  67 }