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test for psbt in bytes form

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This commit is contained in:
Craig Raw 2020-03-30 16:50:28 +02:00
parent 3d292b9dcc
commit 314ee075c2
1 changed files with 12 additions and 5 deletions
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17
src/main/java/com/craigraw/drongo/psbt/PSBT.java
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@ -22,7 +22,8 @@ public class PSBT {
public static final byte PSBT_GLOBAL_VERSION = (byte)0xfb; public static final byte PSBT_GLOBAL_VERSION = (byte)0xfb;
public static final byte PSBT_GLOBAL_PROPRIETARY = (byte)0xfc; public static final byte PSBT_GLOBAL_PROPRIETARY = (byte)0xfc;
public static final String PSBT_MAGIC = "70736274"; public static final String PSBT_MAGIC_HEX = "70736274";
public static final int PSBT_MAGIC_INT = 1886610036;
private static final int STATE_GLOBALS = 1; private static final int STATE_GLOBALS = 1;
private static final int STATE_INPUTS = 2; private static final int STATE_INPUTS = 2;
@ -59,7 +60,7 @@ public class PSBT {
byte[] magicBuf = new byte[4]; byte[] magicBuf = new byte[4];
psbtByteBuffer.get(magicBuf); psbtByteBuffer.get(magicBuf);
if (!PSBT_MAGIC.equalsIgnoreCase(Hex.toHexString(magicBuf))) { if (!PSBT_MAGIC_HEX.equalsIgnoreCase(Hex.toHexString(magicBuf))) {
throw new PSBTParseException("PSBT has invalid magic value"); throw new PSBTParseException("PSBT has invalid magic value");
} }
@ -314,7 +315,7 @@ public class PSBT {
ByteArrayOutputStream baos = new ByteArrayOutputStream(); ByteArrayOutputStream baos = new ByteArrayOutputStream();
// magic // magic
baos.write(Hex.decode(PSBT_MAGIC), 0, Hex.decode(PSBT_MAGIC).length); baos.write(Hex.decode(PSBT_MAGIC_HEX), 0, Hex.decode(PSBT_MAGIC_HEX).length);
// separator // separator
baos.write((byte) 0xff); baos.write((byte) 0xff);
@ -517,11 +518,17 @@ public class PSBT {
return bip32buf; return bip32buf;
} }
public static boolean isPSBT(byte[] b) {
ByteBuffer buffer = ByteBuffer.wrap(b);
int header = buffer.getInt();
return header == PSBT_MAGIC_INT;
}
public static boolean isPSBT(String s) { public static boolean isPSBT(String s) {
if (Utils.isHex(s) && s.startsWith(PSBT_MAGIC)) { if (Utils.isHex(s) && s.startsWith(PSBT_MAGIC_HEX)) {
return true; return true;
} else { } else {
return Utils.isBase64(s) && Hex.toHexString(Base64.decode(s)).startsWith(PSBT_MAGIC); return Utils.isBase64(s) && Hex.toHexString(Base64.decode(s)).startsWith(PSBT_MAGIC_HEX);
} }
} }