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 public class Key {
  15
  16         private final byte[] routingKey;
  17         private final byte[] cryptoKey;
  18         private final byte[] extra;
  19
  20         private Key(byte[] routingKey, byte[] cryptoKey, byte[] extra) {
  21                 this.routingKey = routingKey;
  22                 this.cryptoKey = cryptoKey;
  23                 this.extra = extra;
  24         }
  25
  26         @VisibleForTesting
  27         public String getRoutingKey() {
  28                 return encode(routingKey);
  29         }
  30
  31         @VisibleForTesting
  32         public String getCryptoKey() {
  33                 return encode(cryptoKey);
  34         }
  35
  36         @VisibleForTesting
  37         public String getExtra() {
  38                 return encode(extra);
  39         }
  40
  41         public FreenetURI toUsk(String docName, long edition, String... paths) {
  42                 return new FreenetURI("USK", docName, paths, routingKey, cryptoKey,
  43                                 extra, edition);
  44         }
  45
  46         public FreenetURI toSsk(String docName, String... paths) {
  47                 return new FreenetURI("SSK", docName, paths, routingKey, cryptoKey,
  48                                 extra);
  49         }
  50
  51         public FreenetURI toSsk(String docName, long edition, String... paths) {
  52                 return new FreenetURI("SSK", format("%s-%d", docName, edition), paths,
  53                                 routingKey, cryptoKey, extra, edition);
  54         }
  55
  56         public static Key from(FreenetURI freenetURI) {
  57                 return new Key(freenetURI.getRoutingKey(), freenetURI.getCryptoKey(),
  58                                 freenetURI.getExtra());
  59         }
  60
  61         public static String routingKey(FreenetURI freenetURI) {
  62                 return from(freenetURI).getRoutingKey();
  63         }
  64
  65 }