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add block header

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This commit is contained in:
Craig Raw 2020-06-02 10:59:50 +02:00
parent 2bd81b7044
commit 9820491cd5
5 changed files with 72 additions and 16 deletions
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58
src/main/java/com/sparrowwallet/drongo/protocol/BlockHeader.java
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@ -1,4 +1,60 @@
package com.sparrowwallet.drongo.protocol;
public class BlockHeader {
import java.util.Date;
public class BlockHeader extends Message {
private long version;
private Sha256Hash prevBlockHash;
private Sha256Hash merkleRoot, witnessRoot;
private long time;
private long difficultyTarget; // "nBits"
private long nonce;
public BlockHeader(byte[] rawheader) {
super(rawheader, 0);
}
@Override
protected void parse() throws ProtocolException {
version = readUint32();
prevBlockHash = readHash();
merkleRoot = readHash();
time = readUint32();
difficultyTarget = readUint32();
nonce = readUint32();
length = cursor - offset;
}
public long getVersion() {
return version;
}
public Sha256Hash getPrevBlockHash() {
return prevBlockHash;
}
public Sha256Hash getMerkleRoot() {
return merkleRoot;
}
public Sha256Hash getWitnessRoot() {
return witnessRoot;
}
public long getTime() {
return time;
}
public Date getTimeAsDate() {
return new Date(time);
}
public long getDifficultyTarget() {
return difficultyTarget;
}
public long getNonce() {
return nonce;
}
}

16
src/main/java/com/sparrowwallet/drongo/protocol/Message.java
View file

@ -13,7 +13,7 @@ public abstract class Message {
public static final int MAX_SIZE = 0x02000000; // 32MB
public static final int UNKNOWN_LENGTH = Integer.MIN_VALUE;
protected byte[] rawtx;
protected byte[] payload;
// The offset is how many bytes into the provided byte array this message payload starts at.
protected int offset;
@ -23,8 +23,8 @@ public abstract class Message {
protected int length = UNKNOWN_LENGTH;
public Message(byte[] rawtx, int offset) {
this.rawtx = rawtx;
public Message(byte[] payload, int offset) {
this.payload = payload;
this.cursor = this.offset = offset;
parse();
@ -53,7 +53,7 @@ public abstract class Message {
protected long readUint32() throws ProtocolException {
try {
long u = Utils.readUint32(rawtx, cursor);
long u = Utils.readUint32(payload, cursor);
cursor += 4;
return u;
} catch (ArrayIndexOutOfBoundsException e) {
@ -63,7 +63,7 @@ public abstract class Message {
protected long readInt64() throws ProtocolException {
try {
long u = Utils.readInt64(rawtx, cursor);
long u = Utils.readInt64(payload, cursor);
cursor += 8;
return u;
} catch (ArrayIndexOutOfBoundsException e) {
@ -72,12 +72,12 @@ public abstract class Message {
}
protected byte[] readBytes(int length) throws ProtocolException {
if ((length > MAX_SIZE) || (cursor + length > rawtx.length)) {
if ((length > MAX_SIZE) || (cursor + length > payload.length)) {
throw new ProtocolException("Claimed value length too large: " + length);
}
try {
byte[] b = new byte[length];
System.arraycopy(rawtx, cursor, b, 0, length);
System.arraycopy(payload, cursor, b, 0, length);
cursor += length;
return b;
} catch (IndexOutOfBoundsException e) {
@ -91,7 +91,7 @@ public abstract class Message {
protected long readVarInt(int offset) throws ProtocolException {
try {
VarInt varint = new VarInt(rawtx, cursor + offset);
VarInt varint = new VarInt(payload, cursor + offset);
cursor += offset + varint.getOriginalSizeInBytes();
return varint.value;
} catch (ArrayIndexOutOfBoundsException e) {

8
src/main/java/com/sparrowwallet/drongo/protocol/Transaction.java
View file

@ -182,7 +182,7 @@ public class Transaction extends ChildMessage {
// version
version = readUint32();
// peek at marker
byte marker = rawtx[cursor];
byte marker = payload[cursor];
segwit = (marker == 0);
// marker, flag
if (segwit) {
@ -206,7 +206,7 @@ public class Transaction extends ChildMessage {
long numInputs = readVarInt();
inputs = new ArrayList<>(Math.min((int) numInputs, Utils.MAX_INITIAL_ARRAY_LENGTH));
for (long i = 0; i < numInputs; i++) {
TransactionInput input = new TransactionInput(this, rawtx, cursor);
TransactionInput input = new TransactionInput(this, payload, cursor);
inputs.add(input);
long scriptLen = readVarInt(TransactionOutPoint.MESSAGE_LENGTH);
cursor += scriptLen + 4;
@ -217,7 +217,7 @@ public class Transaction extends ChildMessage {
long numOutputs = readVarInt();
outputs = new ArrayList<>(Math.min((int) numOutputs, Utils.MAX_INITIAL_ARRAY_LENGTH));
for (long i = 0; i < numOutputs; i++) {
TransactionOutput output = new TransactionOutput(this, rawtx, cursor);
TransactionOutput output = new TransactionOutput(this, payload, cursor);
outputs.add(output);
long scriptLen = readVarInt(8);
cursor += scriptLen;
@ -227,7 +227,7 @@ public class Transaction extends ChildMessage {
private void parseWitnesses() {
int numWitnesses = inputs.size();
for (int i = 0; i < numWitnesses; i++) {
TransactionWitness witness = new TransactionWitness(this, rawtx, cursor);
TransactionWitness witness = new TransactionWitness(this, payload, cursor);
inputs.get(i).setWitness(witness);
cursor += witness.getLength();
}

4
src/main/java/com/sparrowwallet/drongo/protocol/TransactionInput.java
View file

@ -31,7 +31,7 @@ public class TransactionInput extends ChildMessage {
}
protected void parse() throws ProtocolException {
outpoint = new TransactionOutPoint(rawtx, cursor, this);
outpoint = new TransactionOutPoint(payload, cursor, this);
cursor += outpoint.getMessageSize();
int scriptLen = (int) readVarInt();
length = cursor - offset + scriptLen + 4;
@ -62,7 +62,7 @@ public class TransactionInput extends ChildMessage {
}
void setScriptBytes(byte[] scriptBytes) {
super.rawtx = null;
super.payload = null;
this.scriptSig = null;
int oldLength = length;
this.scriptBytes = scriptBytes;

2
src/main/java/com/sparrowwallet/drongo/protocol/TransactionOutput.java
View file

@ -34,7 +34,7 @@ public class TransactionOutput extends ChildMessage {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitcoinSerializeToStream(baos);
rawtx = baos.toByteArray();
payload = baos.toByteArray();
} catch(IOException e) {
//ignore
}