46 lines
1.4 KiB
TypeScript
46 lines
1.4 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 (script: Buffer | Array<number | Buffer>, allowIncomplete?: boolean): 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(bscript.compile(chunks.slice(0, -1)))!
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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 p2wsho.check(redeemScriptChunks) ||
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p2wpkho.check(redeemScriptChunks)
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}
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// match types
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if (p2pkh.input.check(scriptSigChunks) &&
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p2pkh.output.check(redeemScriptChunks)) return true
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if (p2ms.input.check(scriptSigChunks, allowIncomplete) &&
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p2ms.output.check(redeemScriptChunks)) return true
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if (p2pk.input.check(scriptSigChunks) &&
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p2pk.output.check(redeemScriptChunks)) return true
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return false
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}
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check.toJSON = function () { return 'scriptHash input' }
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