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Use Utils.uint*() and Utils.readUint*() methods for all remaining instances where we still did the bit stuffing manually.

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This commit is contained in:
Andreas Schildbach 2018-02-18 18:19:27 +01:00
parent aa593f46cd
commit b455ebc635
12 changed files with 98 additions and 93 deletions
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12
core/src/main/java/org/bitcoinj/core/PeerAddress.java
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@ -28,8 +28,6 @@ import java.net.InetAddress;
import java.net.InetSocketAddress; import java.net.InetSocketAddress;
import java.net.UnknownHostException; import java.net.UnknownHostException;
import static org.bitcoinj.core.Utils.uint32ToByteStreamLE;
import static org.bitcoinj.core.Utils.uint64ToByteStreamLE;
import static com.google.common.base.Preconditions.checkNotNull; import static com.google.common.base.Preconditions.checkNotNull;
/** /**
@ -126,9 +124,9 @@ public class PeerAddress extends ChildMessage {
//so assumes itself to be up. For a fuller implementation this needs to be dynamic only if //so assumes itself to be up. For a fuller implementation this needs to be dynamic only if
//the address refers to this client. //the address refers to this client.
int secs = (int) (Utils.currentTimeSeconds()); int secs = (int) (Utils.currentTimeSeconds());
uint32ToByteStreamLE(secs, stream); Utils.uint32ToByteStreamLE(secs, stream);
} }
uint64ToByteStreamLE(services, stream); // nServices. Utils.uint64ToByteStreamLE(services, stream); // nServices.
// Java does not provide any utility to map an IPv4 address into IPv6 space, so we have to do it by hand. // Java does not provide any utility to map an IPv4 address into IPv6 space, so we have to do it by hand.
byte[] ipBytes = addr.getAddress(); byte[] ipBytes = addr.getAddress();
if (ipBytes.length == 4) { if (ipBytes.length == 4) {
@ -140,8 +138,7 @@ public class PeerAddress extends ChildMessage {
} }
stream.write(ipBytes); stream.write(ipBytes);
// And write out the port. Unlike the rest of the protocol, address and port is in big endian byte order. // And write out the port. Unlike the rest of the protocol, address and port is in big endian byte order.
stream.write((byte) (0xFF & port >> 8)); Utils.uint16ToByteStreamBE(port, stream);
stream.write((byte) (0xFF & port));
} }
@Override @Override
@ -162,7 +159,8 @@ public class PeerAddress extends ChildMessage {
} catch (UnknownHostException e) { } catch (UnknownHostException e) {
throw new RuntimeException(e); // Cannot happen. throw new RuntimeException(e); // Cannot happen.
} }
port = ((0xFF & payload[cursor++]) << 8) | (0xFF & payload[cursor++]); port = Utils.readUint16BE(payload, cursor);
cursor += 2;
// The 4 byte difference is the uint32 timestamp that was introduced in version 31402 // The 4 byte difference is the uint32 timestamp that was introduced in version 31402
length = protocolVersion > 31402 ? MESSAGE_SIZE : MESSAGE_SIZE - 4; length = protocolVersion > 31402 ? MESSAGE_SIZE : MESSAGE_SIZE - 4;
} }

20
core/src/main/java/org/bitcoinj/core/TransactionOutputChanges.java
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@ -38,18 +38,12 @@ public class TransactionOutputChanges {
} }
public TransactionOutputChanges(InputStream in) throws IOException { public TransactionOutputChanges(InputStream in) throws IOException {
int numOutsCreated = (in.read() & 0xFF) | int numOutsCreated = (int) Utils.readUint32FromStream(in);
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
txOutsCreated = new LinkedList<>(); txOutsCreated = new LinkedList<>();
for (int i = 0; i < numOutsCreated; i++) for (int i = 0; i < numOutsCreated; i++)
txOutsCreated.add(new UTXO(in)); txOutsCreated.add(new UTXO(in));
int numOutsSpent = (in.read() & 0xFF) | int numOutsSpent = (int) Utils.readUint32FromStream(in);
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
txOutsSpent = new LinkedList<>(); txOutsSpent = new LinkedList<>();
for (int i = 0; i < numOutsSpent; i++) for (int i = 0; i < numOutsSpent; i++)
txOutsSpent.add(new UTXO(in)); txOutsSpent.add(new UTXO(in));
@ -57,19 +51,13 @@ public class TransactionOutputChanges {
public void serializeToStream(OutputStream bos) throws IOException { public void serializeToStream(OutputStream bos) throws IOException {
int numOutsCreated = txOutsCreated.size(); int numOutsCreated = txOutsCreated.size();
bos.write(0xFF & numOutsCreated); Utils.uint32ToByteStreamLE(numOutsCreated, bos);
bos.write(0xFF & (numOutsCreated >> 8));
bos.write(0xFF & (numOutsCreated >> 16));
bos.write(0xFF & (numOutsCreated >> 24));
for (UTXO output : txOutsCreated) { for (UTXO output : txOutsCreated) {
output.serializeToStream(bos); output.serializeToStream(bos);
} }
int numOutsSpent = txOutsSpent.size(); int numOutsSpent = txOutsSpent.size();
bos.write(0xFF & numOutsSpent); Utils.uint32ToByteStreamLE(numOutsSpent, bos);
bos.write(0xFF & (numOutsSpent >> 8));
bos.write(0xFF & (numOutsSpent >> 16));
bos.write(0xFF & (numOutsSpent >> 24));
for (UTXO output : txOutsSpent) { for (UTXO output : txOutsSpent) {
output.serializeToStream(bos); output.serializeToStream(bos);
} }

26
core/src/main/java/org/bitcoinj/core/UTXO.java
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@ -146,35 +146,22 @@ public class UTXO implements Serializable {
public void serializeToStream(OutputStream bos) throws IOException { public void serializeToStream(OutputStream bos) throws IOException {
Utils.uint64ToByteStreamLE(BigInteger.valueOf(value.value), bos); Utils.uint64ToByteStreamLE(BigInteger.valueOf(value.value), bos);
byte[] scriptBytes = script.getProgram(); byte[] scriptBytes = script.getProgram();
bos.write(0xFF & scriptBytes.length); Utils.uint32ToByteStreamLE(scriptBytes.length, bos);
bos.write(0xFF & scriptBytes.length >> 8);
bos.write(0xFF & (scriptBytes.length >> 16));
bos.write(0xFF & (scriptBytes.length >> 24));
bos.write(scriptBytes); bos.write(scriptBytes);
bos.write(hash.getBytes()); bos.write(hash.getBytes());
Utils.uint32ToByteStreamLE(index, bos); Utils.uint32ToByteStreamLE(index, bos);
Utils.uint32ToByteStreamLE(height, bos);
bos.write(0xFF & (height));
bos.write(0xFF & (height >> 8));
bos.write(0xFF & (height >> 16));
bos.write(0xFF & (height >> 24));
bos.write(new byte[] { (byte)(coinbase ? 1 : 0) }); bos.write(new byte[] { (byte)(coinbase ? 1 : 0) });
} }
public void deserializeFromStream(InputStream in) throws IOException { public void deserializeFromStream(InputStream in) throws IOException {
byte[] valueBytes = new byte[8]; byte[] valueBytes = new byte[8];
if (in.read(valueBytes, 0, 8) != 8) if (in.read(valueBytes, 0, 8) != 8)
throw new EOFException(); throw new EOFException();
value = Coin.valueOf(Utils.readInt64(valueBytes, 0)); value = Coin.valueOf(Utils.readInt64(valueBytes, 0));
int scriptBytesLength = ((in.read() & 0xFF)) | int scriptBytesLength = (int) Utils.readUint32FromStream(in);
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] scriptBytes = new byte[scriptBytesLength]; byte[] scriptBytes = new byte[scriptBytesLength];
if (in.read(scriptBytes) != scriptBytesLength) if (in.read(scriptBytes) != scriptBytesLength)
throw new EOFException(); throw new EOFException();
@ -190,10 +177,7 @@ public class UTXO implements Serializable {
throw new EOFException(); throw new EOFException();
index = Utils.readUint32(indexBytes, 0); index = Utils.readUint32(indexBytes, 0);
height = ((in.read() & 0xFF)) | height = (int) Utils.readUint32FromStream(in);
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] coinbaseByte = new byte[1]; byte[] coinbaseByte = new byte[1];
in.read(coinbaseByte); in.read(coinbaseByte);

69
core/src/main/java/org/bitcoinj/core/Utils.java
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@ -18,6 +18,7 @@
package org.bitcoinj.core; package org.bitcoinj.core;
import java.io.IOException; import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream; import java.io.OutputStream;
import java.math.BigInteger; import java.math.BigInteger;
import java.text.DateFormat; import java.text.DateFormat;
@ -88,12 +89,10 @@ public class Utils {
return dest; return dest;
} }
/** Write 4 bytes to the byte array (starting at the offset) as unsigned 32-bit integer in big endian format. */ /** Write 2 bytes to the byte array (starting at the offset) as unsigned 16-bit integer in little endian format. */
public static void uint32ToByteArrayBE(long val, byte[] out, int offset) { public static void uint16ToByteArrayLE(int val, byte[] out, int offset) {
out[offset] = (byte) (0xFF & (val >> 24)); out[offset] = (byte) (0xFF & val);
out[offset + 1] = (byte) (0xFF & (val >> 16)); out[offset + 1] = (byte) (0xFF & (val >> 8));
out[offset + 2] = (byte) (0xFF & (val >> 8));
out[offset + 3] = (byte) (0xFF & val);
} }
/** Write 4 bytes to the byte array (starting at the offset) as unsigned 32-bit integer in little endian format. */ /** Write 4 bytes to the byte array (starting at the offset) as unsigned 32-bit integer in little endian format. */
@ -104,6 +103,14 @@ public class Utils {
out[offset + 3] = (byte) (0xFF & (val >> 24)); out[offset + 3] = (byte) (0xFF & (val >> 24));
} }
/** Write 4 bytes to the byte array (starting at the offset) as unsigned 32-bit integer in big endian format. */
public static void uint32ToByteArrayBE(long val, byte[] out, int offset) {
out[offset] = (byte) (0xFF & (val >> 24));
out[offset + 1] = (byte) (0xFF & (val >> 16));
out[offset + 2] = (byte) (0xFF & (val >> 8));
out[offset + 3] = (byte) (0xFF & val);
}
/** Write 8 bytes to the byte array (starting at the offset) as signed 64-bit integer in little endian format. */ /** Write 8 bytes to the byte array (starting at the offset) as signed 64-bit integer in little endian format. */
public static void int64ToByteArrayLE(long val, byte[] out, int offset) { public static void int64ToByteArrayLE(long val, byte[] out, int offset) {
out[offset] = (byte) (0xFF & val); out[offset] = (byte) (0xFF & val);
@ -116,6 +123,18 @@ public class Utils {
out[offset + 7] = (byte) (0xFF & (val >> 56)); out[offset + 7] = (byte) (0xFF & (val >> 56));
} }
/** Write 2 bytes to the output stream as unsigned 16-bit integer in little endian format. */
public static void uint16ToByteStreamLE(int val, OutputStream stream) throws IOException {
stream.write((int) (0xFF & val));
stream.write((int) (0xFF & (val >> 8)));
}
/** Write 2 bytes to the output stream as unsigned 16-bit integer in big endian format. */
public static void uint16ToByteStreamBE(int val, OutputStream stream) throws IOException {
stream.write((int) (0xFF & (val >> 8)));
stream.write((int) (0xFF & val));
}
/** Write 4 bytes to the output stream as unsigned 32-bit integer in little endian format. */ /** Write 4 bytes to the output stream as unsigned 32-bit integer in little endian format. */
public static void uint32ToByteStreamLE(long val, OutputStream stream) throws IOException { public static void uint32ToByteStreamLE(long val, OutputStream stream) throws IOException {
stream.write((int) (0xFF & val)); stream.write((int) (0xFF & val));
@ -123,7 +142,15 @@ public class Utils {
stream.write((int) (0xFF & (val >> 16))); stream.write((int) (0xFF & (val >> 16)));
stream.write((int) (0xFF & (val >> 24))); stream.write((int) (0xFF & (val >> 24)));
} }
/** Write 4 bytes to the output stream as unsigned 32-bit integer in big endian format. */
public static void uint32ToByteStreamBE(long val, OutputStream stream) throws IOException {
stream.write((int) (0xFF & (val >> 24)));
stream.write((int) (0xFF & (val >> 16)));
stream.write((int) (0xFF & (val >> 8)));
stream.write((int) (0xFF & val));
}
/** Write 8 bytes to the output stream as signed 64-bit integer in little endian format. */ /** Write 8 bytes to the output stream as signed 64-bit integer in little endian format. */
public static void int64ToByteStreamLE(long val, OutputStream stream) throws IOException { public static void int64ToByteStreamLE(long val, OutputStream stream) throws IOException {
stream.write((int) (0xFF & val)); stream.write((int) (0xFF & val));
@ -150,6 +177,12 @@ public class Utils {
} }
} }
/** Parse 2 bytes from the byte array (starting at the offset) as unsigned 16-bit integer in little endian format. */
public static int readUint16(byte[] bytes, int offset) {
return (bytes[offset] & 0xff) |
((bytes[offset + 1] & 0xff) << 8);
}
/** Parse 4 bytes from the byte array (starting at the offset) as unsigned 32-bit integer in little endian format. */ /** Parse 4 bytes from the byte array (starting at the offset) as unsigned 32-bit integer in little endian format. */
public static long readUint32(byte[] bytes, int offset) { public static long readUint32(byte[] bytes, int offset) {
return (bytes[offset] & 0xffl) | return (bytes[offset] & 0xffl) |
@ -184,6 +217,28 @@ public class Utils {
(bytes[offset + 1] & 0xff); (bytes[offset + 1] & 0xff);
} }
/** Parse 2 bytes from the stream as unsigned 16-bit integer in little endian format. */
public static int readUint16FromStream(InputStream is) {
try {
return (is.read() & 0xff) |
((is.read() & 0xff) << 8);
} catch (IOException x) {
throw new RuntimeException(x);
}
}
/** Parse 4 bytes from the stream as unsigned 32-bit integer in little endian format. */
public static long readUint32FromStream(InputStream is) {
try {
return (is.read() & 0xffl) |
((is.read() & 0xffl) << 8) |
((is.read() & 0xffl) << 16) |
((is.read() & 0xffl) << 24);
} catch (IOException x) {
throw new RuntimeException(x);
}
}
/** /**
* Returns a copy of the given byte array in reverse order. * Returns a copy of the given byte array in reverse order.
*/ */

7
core/src/main/java/org/bitcoinj/core/VarInt.java
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@ -45,7 +45,7 @@ public class VarInt {
value = first; value = first;
originallyEncodedSize = 1; // 1 data byte (8 bits) originallyEncodedSize = 1; // 1 data byte (8 bits)
} else if (first == 253) { } else if (first == 253) {
value = (0xFF & buf[offset + 1]) | ((0xFF & buf[offset + 2]) << 8); value = Utils.readUint16(buf, offset + 1);
originallyEncodedSize = 3; // 1 marker + 2 data bytes (16 bits) originallyEncodedSize = 3; // 1 marker + 2 data bytes (16 bits)
} else if (first == 254) { } else if (first == 254) {
value = Utils.readUint32(buf, offset + 1); value = Utils.readUint32(buf, offset + 1);
@ -96,7 +96,10 @@ public class VarInt {
case 1: case 1:
return new byte[]{(byte) value}; return new byte[]{(byte) value};
case 3: case 3:
return new byte[]{(byte) 253, (byte) (value), (byte) (value >> 8)}; bytes = new byte[3];
bytes[0] = (byte) 253;
Utils.uint16ToByteArrayLE((int) value, bytes, 1);
return bytes;
case 5: case 5:
bytes = new byte[5]; bytes = new byte[5];
bytes[0] = (byte) 254; bytes[0] = (byte) 254;

6
core/src/main/java/org/bitcoinj/net/discovery/SeedPeers.java
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@ -17,6 +17,7 @@
package org.bitcoinj.net.discovery; package org.bitcoinj.net.discovery;
import org.bitcoinj.core.NetworkParameters; import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.core.Utils;
import javax.annotation.Nullable; import javax.annotation.Nullable;
import java.net.InetAddress; import java.net.InetAddress;
@ -104,10 +105,7 @@ public class SeedPeers implements PeerDiscovery {
private InetAddress convertAddress(int seed) throws UnknownHostException { private InetAddress convertAddress(int seed) throws UnknownHostException {
byte[] v4addr = new byte[4]; byte[] v4addr = new byte[4];
v4addr[0] = (byte) (0xFF & (seed)); Utils.uint32ToByteArrayLE(seed, v4addr, 0);
v4addr[1] = (byte) (0xFF & (seed >> 8));
v4addr[2] = (byte) (0xFF & (seed >> 16));
v4addr[3] = (byte) (0xFF & (seed >> 24));
return InetAddress.getByAddress(v4addr); return InetAddress.getByAddress(v4addr);
} }

15
core/src/main/java/org/bitcoinj/script/Script.java
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@ -200,12 +200,12 @@ public class Script {
} else if (opcode == OP_PUSHDATA2) { } else if (opcode == OP_PUSHDATA2) {
// Read a short, then read that many bytes of data. // Read a short, then read that many bytes of data.
if (bis.available() < 2) throw new ScriptException(ScriptError.SCRIPT_ERR_UNKNOWN_ERROR, "Unexpected end of script"); if (bis.available() < 2) throw new ScriptException(ScriptError.SCRIPT_ERR_UNKNOWN_ERROR, "Unexpected end of script");
dataToRead = bis.read() | (bis.read() << 8); dataToRead = Utils.readUint16FromStream(bis);
} else if (opcode == OP_PUSHDATA4) { } else if (opcode == OP_PUSHDATA4) {
// Read a uint32, then read that many bytes of data. // Read a uint32, then read that many bytes of data.
// Though this is allowed, because its value cannot be > 520, it should never actually be used // Though this is allowed, because its value cannot be > 520, it should never actually be used
if (bis.available() < 4) throw new ScriptException(ScriptError.SCRIPT_ERR_UNKNOWN_ERROR, "Unexpected end of script"); if (bis.available() < 4) throw new ScriptException(ScriptError.SCRIPT_ERR_UNKNOWN_ERROR, "Unexpected end of script");
dataToRead = ((long)bis.read()) | (((long)bis.read()) << 8) | (((long)bis.read()) << 16) | (((long)bis.read()) << 24); dataToRead = Utils.readUint32FromStream(bis);
} }
ScriptChunk chunk; ScriptChunk chunk;
@ -384,8 +384,7 @@ public class Script {
os.write(buf); os.write(buf);
} else if (buf.length < 65536) { } else if (buf.length < 65536) {
os.write(OP_PUSHDATA2); os.write(OP_PUSHDATA2);
os.write(0xFF & (buf.length)); Utils.uint16ToByteStreamLE(buf.length, os);
os.write(0xFF & (buf.length >> 8));
os.write(buf); os.write(buf);
} else { } else {
throw new RuntimeException("Unimplemented"); throw new RuntimeException("Unimplemented");
@ -722,13 +721,9 @@ public class Script {
} else if (opcode == OP_PUSHDATA1) { } else if (opcode == OP_PUSHDATA1) {
additionalBytes = (0xFF & inputScript[cursor]) + 1; additionalBytes = (0xFF & inputScript[cursor]) + 1;
} else if (opcode == OP_PUSHDATA2) { } else if (opcode == OP_PUSHDATA2) {
additionalBytes = ((0xFF & inputScript[cursor]) | additionalBytes = Utils.readUint16(inputScript, cursor) + 2;
((0xFF & inputScript[cursor+1]) << 8)) + 2;
} else if (opcode == OP_PUSHDATA4) { } else if (opcode == OP_PUSHDATA4) {
additionalBytes = ((0xFF & inputScript[cursor]) | additionalBytes = (int) Utils.readUint32(inputScript, cursor) + 4;
((0xFF & inputScript[cursor+1]) << 8) |
((0xFF & inputScript[cursor+1]) << 16) |
((0xFF & inputScript[cursor+1]) << 24)) + 4;
} }
if (!skip) { if (!skip) {
try { try {

3
core/src/main/java/org/bitcoinj/script/ScriptChunk.java
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@ -125,8 +125,7 @@ public class ScriptChunk {
} else if (opcode == OP_PUSHDATA2) { } else if (opcode == OP_PUSHDATA2) {
checkState(data.length <= 0xFFFF); checkState(data.length <= 0xFFFF);
stream.write(OP_PUSHDATA2); stream.write(OP_PUSHDATA2);
stream.write(0xFF & data.length); Utils.uint16ToByteStreamLE(data.length, stream);
stream.write(0xFF & (data.length >> 8));
} else if (opcode == OP_PUSHDATA4) { } else if (opcode == OP_PUSHDATA4) {
checkState(data.length <= Script.MAX_SCRIPT_ELEMENT_SIZE); checkState(data.length <= Script.MAX_SCRIPT_ELEMENT_SIZE);
stream.write(OP_PUSHDATA4); stream.write(OP_PUSHDATA4);

12
core/src/main/java/org/bitcoinj/store/DatabaseFullPrunedBlockStore.java
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@ -668,10 +668,7 @@ public abstract class DatabaseFullPrunedBlockStore implements FullPrunedBlockSto
txOutChanges = bos.toByteArray(); txOutChanges = bos.toByteArray();
} else { } else {
int numTxn = undoableBlock.getTransactions().size(); int numTxn = undoableBlock.getTransactions().size();
bos.write(0xFF & numTxn); Utils.uint32ToByteStreamLE(numTxn, bos);
bos.write(0xFF & (numTxn >> 8));
bos.write(0xFF & (numTxn >> 16));
bos.write(0xFF & (numTxn >> 24));
for (Transaction tx : undoableBlock.getTransactions()) for (Transaction tx : undoableBlock.getTransactions())
tx.bitcoinSerialize(bos); tx.bitcoinSerialize(bos);
transactions = bos.toByteArray(); transactions = bos.toByteArray();
@ -805,11 +802,8 @@ public abstract class DatabaseFullPrunedBlockStore implements FullPrunedBlockSto
byte[] transactions = results.getBytes(2); byte[] transactions = results.getBytes(2);
StoredUndoableBlock block; StoredUndoableBlock block;
if (txOutChanges == null) { if (txOutChanges == null) {
int offset = 0; int numTxn = (int) Utils.readUint32(transactions, 0);
int numTxn = ((transactions[offset++] & 0xFF)) | int offset = 4;
((transactions[offset++] & 0xFF) << 8) |
((transactions[offset++] & 0xFF) << 16) |
((transactions[offset++] & 0xFF) << 24);
List<Transaction> transactionList = new LinkedList<>(); List<Transaction> transactionList = new LinkedList<>();
for (int i = 0; i < numTxn; i++) { for (int i = 0; i < numTxn; i++) {
Transaction tx = params.getDefaultSerializer().makeTransaction(transactions, offset); Transaction tx = params.getDefaultSerializer().makeTransaction(transactions, offset);

11
core/src/main/java/org/bitcoinj/store/LevelDBFullPrunedBlockStore.java
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@ -38,6 +38,7 @@ import org.bitcoinj.core.Transaction;
import org.bitcoinj.core.TransactionOutputChanges; import org.bitcoinj.core.TransactionOutputChanges;
import org.bitcoinj.core.UTXO; import org.bitcoinj.core.UTXO;
import org.bitcoinj.core.UTXOProviderException; import org.bitcoinj.core.UTXOProviderException;
import org.bitcoinj.core.Utils;
import org.bitcoinj.core.VerificationException; import org.bitcoinj.core.VerificationException;
import org.bitcoinj.script.Script; import org.bitcoinj.script.Script;
import org.bitcoinj.script.ScriptException; import org.bitcoinj.script.ScriptException;
@ -513,10 +514,7 @@ public class LevelDBFullPrunedBlockStore implements FullPrunedBlockStore {
txOutChanges = bos.toByteArray(); txOutChanges = bos.toByteArray();
} else { } else {
int numTxn = undoableBlock.getTransactions().size(); int numTxn = undoableBlock.getTransactions().size();
bos.write((int) (0xFF & (numTxn >> 0))); Utils.uint32ToByteStreamLE(numTxn, bos);
bos.write((int) (0xFF & (numTxn >> 8)));
bos.write((int) (0xFF & (numTxn >> 16)));
bos.write((int) (0xFF & (numTxn >> 24)));
for (Transaction tx : undoableBlock.getTransactions()) for (Transaction tx : undoableBlock.getTransactions())
tx.bitcoinSerialize(bos); tx.bitcoinSerialize(bos);
transactions = bos.toByteArray(); transactions = bos.toByteArray();
@ -671,9 +669,8 @@ public class LevelDBFullPrunedBlockStore implements FullPrunedBlockStore {
int txSize = bb.getInt(); int txSize = bb.getInt();
byte[] transactions = new byte[txSize]; byte[] transactions = new byte[txSize];
bb.get(transactions); bb.get(transactions);
int offset = 0; int numTxn = (int) Utils.readUint32(transactions, 0);
int numTxn = ((transactions[offset++] & 0xFF) << 0) | ((transactions[offset++] & 0xFF) << 8) int offset = 4;
| ((transactions[offset++] & 0xFF) << 16) | ((transactions[offset++] & 0xFF) << 24);
List<Transaction> transactionList = new LinkedList<>(); List<Transaction> transactionList = new LinkedList<>();
for (int i = 0; i < numTxn; i++) { for (int i = 0; i < numTxn; i++) {
Transaction tx = new Transaction(params, transactions, offset); Transaction tx = new Transaction(params, transactions, offset);

5
core/src/main/java/org/bitcoinj/store/PostgresFullPrunedBlockStore.java
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@ -181,10 +181,7 @@ public class PostgresFullPrunedBlockStore extends DatabaseFullPrunedBlockStore {
txOutChanges = bos.toByteArray(); txOutChanges = bos.toByteArray();
} else { } else {
int numTxn = undoableBlock.getTransactions().size(); int numTxn = undoableBlock.getTransactions().size();
bos.write(0xFF & numTxn); Utils.uint32ToByteStreamLE(numTxn, bos);
bos.write(0xFF & (numTxn >> 8));
bos.write(0xFF & (numTxn >> 16));
bos.write(0xFF & (numTxn >> 24));
for (Transaction tx : undoableBlock.getTransactions()) for (Transaction tx : undoableBlock.getTransactions())
tx.bitcoinSerialize(bos); tx.bitcoinSerialize(bos);
transactions = bos.toByteArray(); transactions = bos.toByteArray();

5
core/src/test/java/org/bitcoinj/core/FullBlockTestGenerator.java
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@ -173,10 +173,7 @@ public class FullBlockTestGenerator {
public boolean add(Rule element) { public boolean add(Rule element) {
if (outStream != null && element instanceof BlockAndValidity) { if (outStream != null && element instanceof BlockAndValidity) {
try { try {
outStream.write((int) (params.getPacketMagic() >>> 24)); Utils.uint32ToByteStreamBE(params.getPacketMagic(), outStream);
outStream.write((int) (params.getPacketMagic() >>> 16));
outStream.write((int) (params.getPacketMagic() >>> 8));
outStream.write((int) params.getPacketMagic());
byte[] block = ((BlockAndValidity)element).block.bitcoinSerialize(); byte[] block = ((BlockAndValidity)element).block.bitcoinSerialize();
byte[] length = new byte[4]; byte[] length = new byte[4];
Utils.uint32ToByteArrayBE(block.length, length, 0); Utils.uint32ToByteArrayBE(block.length, length, 0);