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.signalservice.api.messages.SignalServiceEnvelope;
   4 import org.whispersystems.signalservice.api.push.ServiceId;
   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.Optional;
  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 > 5) {
  23                 return null;
  24             }
  25             var type = in.readInt();
  26             var source = in.readUTF();
  27             ServiceId sourceServiceId = null;
  28             if (version >= 3) {
  29                 sourceServiceId = ServiceId.parseOrNull(in.readUTF());
  30             }
  31             var sourceDevice = in.readInt();
  32             if (version == 1) {
  33                 // read legacy relay field
  34                 in.readUTF();
  35             }
  36             String destinationUuid = null;
  37             if (version >= 5) {
  38                 destinationUuid = in.readUTF();
  39             }
  40             var timestamp = in.readLong();
  41             byte[] content = null;
  42             var contentLen = in.readInt();
  43             if (contentLen > 0) {
  44                 content = new byte[contentLen];
  45                 in.readFully(content);
  46             }
  47             byte[] legacyMessage = null;
  48             var legacyMessageLen = in.readInt();
  49             if (legacyMessageLen > 0) {
  50                 legacyMessage = new byte[legacyMessageLen];
  51                 in.readFully(legacyMessage);
  52             }
  53             long serverReceivedTimestamp = 0;
  54             String uuid = null;
  55             if (version >= 2) {
  56                 serverReceivedTimestamp = in.readLong();
  57                 uuid = in.readUTF();
  58                 if ("".equals(uuid)) {
  59                     uuid = null;
  60                 }
  61             }
  62             long serverDeliveredTimestamp = 0;
  63             if (version >= 4) {
  64                 serverDeliveredTimestamp = in.readLong();
  65             }
  66             Optional<SignalServiceAddress> addressOptional = sourceServiceId == null
  67                     ? Optional.empty()
  68                     : Optional.of(new SignalServiceAddress(sourceServiceId, source));
  69             return new SignalServiceEnvelope(type,
  70                     addressOptional,
  71                     sourceDevice,
  72                     timestamp,
  73                     legacyMessage,
  74                     content,
  75                     serverReceivedTimestamp,
  76                     serverDeliveredTimestamp,
  77                     uuid,
  78                     destinationUuid == null ? UuidUtil.UNKNOWN_UUID.toString() : destinationUuid);
  79         }
  80     }
  81
  82     public static void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
  83         try (var f = new FileOutputStream(file)) {
  84             try (var out = new DataOutputStream(f)) {
  85                 out.writeInt(5); // version
  86                 out.writeInt(envelope.getType());
  87                 out.writeUTF(envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "");
  88                 out.writeUTF(envelope.getSourceUuid().isPresent() ? envelope.getSourceUuid().get() : "");
  89                 out.writeInt(envelope.getSourceDevice());
  90                 out.writeUTF(envelope.getDestinationUuid() == null ? "" : envelope.getDestinationUuid());
  91                 out.writeLong(envelope.getTimestamp());
  92                 if (envelope.hasContent()) {
  93                     out.writeInt(envelope.getContent().length);
  94                     out.write(envelope.getContent());
  95                 } else {
  96                     out.writeInt(0);
  97                 }
  98                 if (envelope.hasLegacyMessage()) {
  99                     out.writeInt(envelope.getLegacyMessage().length);
 100                     out.write(envelope.getLegacyMessage());
 101                 } else {
 102                     out.writeInt(0);
 103                 }
 104                 out.writeLong(envelope.getServerReceivedTimestamp());
 105                 var uuid = envelope.getServerGuid();
 106                 out.writeUTF(uuid == null ? "" : uuid);
 107                 out.writeLong(envelope.getServerDeliveredTimestamp());
 108             }
 109         }
 110     }
 111 }