mirrors/mempool
1
0
Fork 0
mirror of https://github.com/mempool/mempool.git synced 2024-11-19 09:52:14 +01:00
Code Issues Projects Releases Wiki Activity

Fix incorrect non-standard label on reserved segwit output types

Browse Source
This commit is contained in:
Mononaut 2024-06-16 22:25:40 +00:00
parent 684ad9f0e6
commit 272a2c8441
No known key found for this signature in database
GPG Key ID: A3F058E41374C04E
2 changed files with 56 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
backend/src/api/common.ts
View File

@ -258,9 +258,15 @@ export class Common {
let opreturnCount = 0;
for (const vout of tx.vout) {
// scriptpubkey
if (['unknown', 'provably_unspendable', 'empty'].includes(vout.scriptpubkey_type)) {
if (['nonstandard', 'provably_unspendable', 'empty'].includes(vout.scriptpubkey_type)) {
// (non-standard output type)
return true;
} else if (vout.scriptpubkey_type === 'unknown') {
// undefined segwit version/length combinations are actually standard in outputs
// https://github.com/bitcoin/bitcoin/blob/2c79abc7ad4850e9e3ba32a04c530155cda7f980/src/script/interpreter.cpp#L1950-L1951
if (vout.scriptpubkey.startsWith('00') || !this.isWitnessProgram(vout.scriptpubkey)) {
return true;
}
} else if (vout.scriptpubkey_type === 'multisig') {
if (!DEFAULT_PERMIT_BAREMULTISIG) {
// bare-multisig
@ -308,6 +314,27 @@ export class Common {
return false;
}
// A witness program is any valid scriptpubkey that consists of a 1-byte push opcode
// followed by a data push between 2 and 40 bytes.
// https://github.com/bitcoin/bitcoin/blob/2c79abc7ad4850e9e3ba32a04c530155cda7f980/src/script/script.cpp#L224-L240
static isWitnessProgram(scriptpubkey: string): false | { version: number, program: string } {
if (scriptpubkey.length < 8 || scriptpubkey.length > 84) {
return false;
}
const version = parseInt(scriptpubkey.slice(0,2), 16);
if (version !== 0 && version < 0x51 || version > 0x60) {
return false;
}
const push = parseInt(scriptpubkey.slice(2,4), 16);
if (push + 2 === (scriptpubkey.length / 2)) {
return {
version: version ? version - 0x50 : 0,
program: scriptpubkey.slice(4),
};
}
return false;
}
static getNonWitnessSize(tx: TransactionExtended): number {
let weight = tx.weight;
let hasWitness = false;

29
frontend/src/app/shared/transaction.utils.ts
View File

@ -147,9 +147,15 @@ export function isNonStandard(tx: Transaction): boolean {
let opreturnCount = 0;
for (const vout of tx.vout) {
// scriptpubkey
if (['unknown', 'provably_unspendable', 'empty'].includes(vout.scriptpubkey_type)) {
if (['nonstandard', 'provably_unspendable', 'empty'].includes(vout.scriptpubkey_type)) {
// (non-standard output type)
return true;
} else if (vout.scriptpubkey_type === 'unknown') {
// undefined segwit version/length combinations are actually standard in outputs
// https://github.com/bitcoin/bitcoin/blob/2c79abc7ad4850e9e3ba32a04c530155cda7f980/src/script/interpreter.cpp#L1950-L1951
if (vout.scriptpubkey.startsWith('00') || !isWitnessProgram(vout.scriptpubkey)) {
return true;
}
} else if (vout.scriptpubkey_type === 'multisig') {
if (!DEFAULT_PERMIT_BAREMULTISIG) {
// bare-multisig
@ -197,6 +203,27 @@ export function isNonStandard(tx: Transaction): boolean {
return false;
}
// A witness program is any valid scriptpubkey that consists of a 1-byte push opcode
// followed by a data push between 2 and 40 bytes.
// https://github.com/bitcoin/bitcoin/blob/2c79abc7ad4850e9e3ba32a04c530155cda7f980/src/script/script.cpp#L224-L240
function isWitnessProgram(scriptpubkey: string): false | { version: number, program: string } {
if (scriptpubkey.length < 8 || scriptpubkey.length > 84) {
return false;
}
const version = parseInt(scriptpubkey.slice(0,2), 16);
if (version !== 0 && version < 0x51 || version > 0x60) {
return false;
}
const push = parseInt(scriptpubkey.slice(2,4), 16);
if (push + 2 === (scriptpubkey.length / 2)) {
return {
version: version ? version - 0x50 : 0,
program: scriptpubkey.slice(4),
};
}
return false;
}
export function getNonWitnessSize(tx: Transaction): number {
let weight = tx.weight;
let hasWitness = false;