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 > 6) {
  23                 // Unsupported envelope version
  24                 return null;
  25             }
  26             var type = in.readInt();
  27             var source = in.readUTF();
  28             ServiceId sourceServiceId = null;
  29             if (version >= 3) {
  30                 sourceServiceId = ServiceId.parseOrNull(in.readUTF());
  31             }
  32             var sourceDevice = in.readInt();
  33             if (version == 1) {
  34                 // read legacy relay field
  35                 in.readUTF();
  36             }
  37             String destinationUuid = null;
  38             if (version >= 5) {
  39                 destinationUuid = in.readUTF();
  40             }
  41             var timestamp = in.readLong();
  42             byte[] content = null;
  43             var contentLen = in.readInt();
  44             if (contentLen > 0) {
  45                 content = new byte[contentLen];
  46                 in.readFully(content);
  47             }
  48             byte[] legacyMessage = null;
  49             var legacyMessageLen = in.readInt();
  50             if (legacyMessageLen > 0) {
  51                 legacyMessage = new byte[legacyMessageLen];
  52                 in.readFully(legacyMessage);
  53             }
  54             long serverReceivedTimestamp = 0;
  55             String uuid = null;
  56             if (version >= 2) {
  57                 serverReceivedTimestamp = in.readLong();
  58                 uuid = in.readUTF();
  59                 if ("".equals(uuid)) {
  60                     uuid = null;
  61                 }
  62             }
  63             long serverDeliveredTimestamp = 0;
  64             if (version >= 4) {
  65                 serverDeliveredTimestamp = in.readLong();
  66             }
  67             boolean isUrgent = true;
  68             if (version >= 6) {
  69                 isUrgent = in.readBoolean();
  70             }
  71             Optional<SignalServiceAddress> addressOptional = sourceServiceId == null
  72                     ? Optional.empty()
  73                     : Optional.of(new SignalServiceAddress(sourceServiceId, source));
  74             return new SignalServiceEnvelope(type,
  75                     addressOptional,
  76                     sourceDevice,
  77                     timestamp,
  78                     legacyMessage,
  79                     content,
  80                     serverReceivedTimestamp,
  81                     serverDeliveredTimestamp,
  82                     uuid,
  83                     destinationUuid == null ? UuidUtil.UNKNOWN_UUID.toString() : destinationUuid,
  84                     isUrgent);
  85         }
  86     }
  87
  88     public static void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
  89         try (var f = new FileOutputStream(file)) {
  90             try (var out = new DataOutputStream(f)) {
  91                 out.writeInt(6); // version
  92                 out.writeInt(envelope.getType());
  93                 out.writeUTF(envelope.getSourceE164().isPresent() ? envelope.getSourceE164().get() : "");
  94                 out.writeUTF(envelope.getSourceUuid().isPresent() ? envelope.getSourceUuid().get() : "");
  95                 out.writeInt(envelope.getSourceDevice());
  96                 out.writeUTF(envelope.getDestinationUuid() == null ? "" : envelope.getDestinationUuid());
  97                 out.writeLong(envelope.getTimestamp());
  98                 if (envelope.hasContent()) {
  99                     out.writeInt(envelope.getContent().length);
 100                     out.write(envelope.getContent());
 101                 } else {
 102                     out.writeInt(0);
 103                 }
 104                 if (envelope.hasLegacyMessage()) {
 105                     out.writeInt(envelope.getLegacyMessage().length);
 106                     out.write(envelope.getLegacyMessage());
 107                 } else {
 108                     out.writeInt(0);
 109                 }
 110                 out.writeLong(envelope.getServerReceivedTimestamp());
 111                 var uuid = envelope.getServerGuid();
 112                 out.writeUTF(uuid == null ? "" : uuid);
 113                 out.writeLong(envelope.getServerDeliveredTimestamp());
 114                 out.writeBoolean(envelope.isUrgent());
 115             }
 116         }
 117     }
 118 }