61 lines
1.5 KiB
TypeScript
61 lines
1.5 KiB
TypeScript
// <scriptSig> {serialized scriptPubKey script}
|
|
|
|
import * as bscript from '../../script';
|
|
import * as p2ms from '../multisig';
|
|
import * as p2pk from '../pubkey';
|
|
import * as p2pkh from '../pubkeyhash';
|
|
import * as p2wpkho from '../witnesspubkeyhash/output';
|
|
import * as p2wsho from '../witnessscripthash/output';
|
|
|
|
export function check(
|
|
script: Buffer | Array<number | Buffer>,
|
|
allowIncomplete?: boolean,
|
|
): boolean {
|
|
const chunks = bscript.decompile(script)!;
|
|
if (chunks.length < 1) return false;
|
|
|
|
const lastChunk = chunks[chunks.length - 1];
|
|
if (!Buffer.isBuffer(lastChunk)) return false;
|
|
|
|
const scriptSigChunks = bscript.decompile(
|
|
bscript.compile(chunks.slice(0, -1)),
|
|
)!;
|
|
const redeemScriptChunks = bscript.decompile(lastChunk);
|
|
|
|
// is redeemScript a valid script?
|
|
if (!redeemScriptChunks) return false;
|
|
|
|
// is redeemScriptSig push only?
|
|
if (!bscript.isPushOnly(scriptSigChunks)) return false;
|
|
|
|
// is witness?
|
|
if (chunks.length === 1) {
|
|
return (
|
|
p2wsho.check(redeemScriptChunks) || p2wpkho.check(redeemScriptChunks)
|
|
);
|
|
}
|
|
|
|
// match types
|
|
if (
|
|
p2pkh.input.check(scriptSigChunks) &&
|
|
p2pkh.output.check(redeemScriptChunks)
|
|
)
|
|
return true;
|
|
|
|
if (
|
|
p2ms.input.check(scriptSigChunks, allowIncomplete) &&
|
|
p2ms.output.check(redeemScriptChunks)
|
|
)
|
|
return true;
|
|
|
|
if (
|
|
p2pk.input.check(scriptSigChunks) &&
|
|
p2pk.output.check(redeemScriptChunks)
|
|
)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
check.toJSON = function() {
|
|
return 'scriptHash input';
|
|
};
|