nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/util/MessageCacheUtils.java

   1 package org.asamk.signal.manager.util;
   2
   3 import org.whispersystems.libsignal.util.guava.Optional;
   4 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
   5 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
   6 import org.whispersystems.signalservice.api.util.UuidUtil;
   7
   8 import java.io.DataInputStream;
   9 import java.io.DataOutputStream;
  10 import java.io.File;
  11 import java.io.FileInputStream;
  12 import java.io.FileOutputStream;
  13 import java.io.IOException;
  14 import java.util.UUID;
  15
  16 public class MessageCacheUtils {
  17
  18     public static SignalServiceEnvelope loadEnvelope(File file) throws IOException {
  19         try (var f = new FileInputStream(file)) {
  20             var in = new DataInputStream(f);
  21             var version = in.readInt();
  22             if (version > 4) {
  23                 return null;
  24             }
  25             var type = in.readInt();
  26             var source = in.readUTF();
  27             UUID sourceUuid = null;
  28             if (version >= 3) {
  29                 sourceUuid = UuidUtil.parseOrNull(in.readUTF());
  30             }
  31             var sourceDevice = in.readInt();
  32             if (version == 1) {
  33                 // read legacy relay field
  34                 in.readUTF();
  35             }
  36             var timestamp = in.readLong();
  37             byte[] content = null;
  38             var contentLen = in.readInt();
  39             if (contentLen > 0) {
  40                 content = new byte[contentLen];
  41                 in.readFully(content);
  42             }
  43             byte[] legacyMessage = null;
  44             var legacyMessageLen = in.readInt();
  45             if (legacyMessageLen > 0) {
  46                 legacyMessage = new byte[legacyMessageLen];
  47                 in.readFully(legacyMessage);
  48             }
  49             long serverReceivedTimestamp = 0;
  50             String uuid = null;
  51             if (version >= 2) {
  52                 serverReceivedTimestamp = in.readLong();
  53                 uuid = in.readUTF();
  54                 if ("".equals(uuid)) {
  55                     uuid = null;
  56                 }
  57             }
  58             long serverDeliveredTimestamp = 0;
  59             if (version >= 4) {
  60                 serverDeliveredTimestamp = in.readLong();
  61             }
  62             Optional<SignalServiceAddress> addressOptional = sourceUuid == null && source.isEmpty()
  63                     ? Optional.absent()
  64                     : Optional.of(new SignalServiceAddress(sourceUuid, source));
  65             return new SignalServiceEnvelope(type,
  66                     addressOptional,
  67                     sourceDevice,
  68                     timestamp,
  69                     legacyMessage,
  70                     content,
  71                     serverReceivedTimestamp,
  72                     serverDeliveredTimestamp,
  73                     uuid);
  74         }
  75     }
  76
  77     public static void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
  78         try (var f = new FileOutputStream(file)) {
  79             try (var out = new DataOutputStream(f)) {
  80                 out.writeInt(4); // version
  81                 out.writeInt(envelope.getType());
  82                 out.writeUTF(envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "");
  83                 out.writeUTF(envelope.getSourceUuid().isPresent() ? envelope.getSourceUuid().get() : "");
  84                 out.writeInt(envelope.getSourceDevice());
  85                 out.writeLong(envelope.getTimestamp());
  86                 if (envelope.hasContent()) {
  87                     out.writeInt(envelope.getContent().length);
  88                     out.write(envelope.getContent());
  89                 } else {
  90                     out.writeInt(0);
  91                 }
  92                 if (envelope.hasLegacyMessage()) {
  93                     out.writeInt(envelope.getLegacyMessage().length);
  94                     out.write(envelope.getLegacyMessage());
  95                 } else {
  96                     out.writeInt(0);
  97                 }
  98                 out.writeLong(envelope.getServerReceivedTimestamp());
  99                 var uuid = envelope.getUuid();
 100                 out.writeUTF(uuid == null ? "" : uuid);
 101                 out.writeLong(envelope.getServerDeliveredTimestamp());
 102             }
 103         }
 104     }
 105 }