machankura/mempool
3
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix errors caused by P2TR inputs without witness data

Browse Source
This commit is contained in:
Vojtěch Strnad
2024-07-01 02:02:53 +02:00
parent 98e9d1a6c3
commit 7432e6e29b
2 changed files with 32 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
frontend/src/app/shared/transaction.utils.ts
View File

@@ -335,19 +335,21 @@ export function getTransactionFlags(tx: Transaction, cpfpInfo?: CpfpInfo, replac
case 'v0_p2wpkh': flags |= TransactionFlags.p2wpkh; break;
case 'v0_p2wsh': flags |= TransactionFlags.p2wsh; break;
case 'v1_p2tr': {
if (!vin.witness?.length) {
throw new Error('Taproot input missing witness data');
}
flags |= TransactionFlags.p2tr;
// in taproot, if the last witness item begins with 0x50, it's an annex
const hasAnnex = vin.witness?.[vin.witness.length - 1].startsWith('50');
// script spends have more than one witness item, not counting the annex (if present)
if (vin.witness.length > (hasAnnex ? 2 : 1)) {
// the script itself is the second-to-last witness item, not counting the annex
const asm = vin.inner_witnessscript_asm;
// inscriptions smuggle data within an 'OP_0 OP_IF ... OP_ENDIF' envelope
if (asm?.includes('OP_0 OP_IF')) {
flags |= TransactionFlags.inscription;
// every valid taproot input has at least one witness item, however transactions
// created before taproot activation don't need to have any witness data
// (see https://mempool.space/tx/b10c007c60e14f9d087e0291d4d0c7869697c6681d979c6639dbd960792b4d41)
if (vin.witness?.length) {
// in taproot, if the last witness item begins with 0x50, it's an annex
const hasAnnex = vin.witness?.[vin.witness.length - 1].startsWith('50');
// script spends have more than one witness item, not counting the annex (if present)
if (vin.witness.length > (hasAnnex ? 2 : 1)) {
// the script itself is the second-to-last witness item, not counting the annex
const asm = vin.inner_witnessscript_asm;
// inscriptions smuggle data within an 'OP_0 OP_IF ... OP_ENDIF' envelope
if (asm?.includes('OP_0 OP_IF')) {
flags |= TransactionFlags.inscription;
}
}
}
} break;