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