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handle psbt keytypes with values greater than single byte compact integers

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This commit is contained in:
Craig Raw 2024-07-11 11:48:32 +02:00
parent 6b1a0bba95
commit d73d3439f6
2 changed files with 25 additions and 19 deletions
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37
src/main/java/com/sparrowwallet/drongo/psbt/PSBTEntry.java
View file

@ -16,11 +16,11 @@ import java.util.Map;
public class PSBTEntry { public class PSBTEntry {
private final byte[] key; private final byte[] key;
private final byte keyType; private final int keyType;
private final byte[] keyData; private final byte[] keyData;
private final byte[] data; private final byte[] data;
public PSBTEntry(byte[] key, byte keyType, byte[] keyData, byte[] data) { public PSBTEntry(byte[] key, int keyType, byte[] keyData, byte[] data) {
this.key = key; this.key = key;
this.keyType = keyType; this.keyType = keyType;
this.keyData = keyData; this.keyData = keyData;
@ -39,12 +39,13 @@ public class PSBTEntry {
byte[] key = new byte[keyLen]; byte[] key = new byte[keyLen];
psbtByteBuffer.get(key); psbtByteBuffer.get(key);
byte keyType = key[0]; ByteBuffer keyBuf = ByteBuffer.wrap(key);
int keyType = readCompactInt(keyBuf);
byte[] keyData = null; byte[] keyData = null;
if (key.length > 1) { if(keyBuf.hasRemaining()) {
keyData = new byte[key.length - 1]; keyData = new byte[keyBuf.remaining()];
System.arraycopy(key, 1, keyData, 0, keyData.length); keyBuf.get(keyData);
} }
int dataLen = readCompactInt(psbtByteBuffer); int dataLen = readCompactInt(psbtByteBuffer);
@ -143,22 +144,20 @@ public class PSBTEntry {
return baos.toByteArray(); return baos.toByteArray();
} }
static PSBTEntry populateEntry(byte type, byte[] keydata, byte[] data) { static PSBTEntry populateEntry(int type, byte[] keyData, byte[] data) {
return new PSBTEntry(new byte[] {type}, type, keydata, data); ByteArrayOutputStream baos = new ByteArrayOutputStream(1 + (keyData == null ? 0 : keyData.length));
} baos.writeBytes(writeCompactInt(type));
void serializeToStream(ByteArrayOutputStream baos) {
int keyLen = 1;
if(keyData != null) {
keyLen += keyData.length;
}
baos.writeBytes(writeCompactInt(keyLen));
baos.writeBytes(key);
if(keyData != null) { if(keyData != null) {
baos.writeBytes(keyData); baos.writeBytes(keyData);
} }
return new PSBTEntry(baos.toByteArray(), type, keyData, data);
}
void serializeToStream(ByteArrayOutputStream baos) {
baos.writeBytes(writeCompactInt(key.length));
baos.writeBytes(key);
baos.writeBytes(writeCompactInt(data.length)); baos.writeBytes(writeCompactInt(data.length));
baos.writeBytes(data); baos.writeBytes(data);
} }
@ -167,7 +166,7 @@ public class PSBTEntry {
return key; return key;
} }
public byte getKeyType() { public int getKeyType() {
return keyType; return keyType;
} }

7
src/test/java/com/sparrowwallet/drongo/psbt/PSBTTest.java
View file

@ -313,6 +313,13 @@ public class PSBTTest {
Assertions.assertEquals(noWitnessDataPsbt, psbt4.toBase64String()); Assertions.assertEquals(noWitnessDataPsbt, psbt4.toBase64String());
} }
@Test
public void largeKeyType() throws PSBTParseException {
String psbt = "cHNidP8BAD8CAAAAAf//////////////////////////////////////////AAAAAAD/////AQAAAAAAAAAAA2oBAAAAAAAF/v//AAAAAAAA";
PSBT psbt1 = PSBT.fromString(psbt);
Assertions.assertEquals("cHNidP8BAD8CAAAAAf//////////////////////////////////////////AAAAAAD/////AQAAAAAAAAAAA2oBAAAAAAAAAAA=", psbt1.toBase64String());
}
@Test @Test
public void creatorBip() throws PSBTParseException { public void creatorBip() throws PSBTParseException {
Transaction transaction = new Transaction(); Transaction transaction = new Transaction();