70 lines
2.4 KiB
JavaScript
70 lines
2.4 KiB
JavaScript
const decompile = require('./script').decompile
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const multisig = require('./templates/multisig')
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const nullData = require('./templates/nulldata')
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const pubKey = require('./templates/pubkey')
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const pubKeyHash = require('./templates/pubkeyhash')
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const scriptHash = require('./templates/scripthash')
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const witnessPubKeyHash = require('./templates/witnesspubkeyhash')
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const witnessScriptHash = require('./templates/witnessscripthash')
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const witnessCommitment = require('./templates/witnesscommitment')
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const types = {
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MULTISIG: 'multisig',
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NONSTANDARD: 'nonstandard',
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NULLDATA: 'nulldata',
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P2PK: 'pubkey',
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P2PKH: 'pubkeyhash',
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P2SH: 'scripthash',
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P2WPKH: 'witnesspubkeyhash',
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P2WSH: 'witnessscripthash',
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WITNESS_COMMITMENT: 'witnesscommitment'
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}
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function classifyOutput (script) {
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if (witnessPubKeyHash.output.check(script)) return types.P2WPKH
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if (witnessScriptHash.output.check(script)) return types.P2WSH
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if (pubKeyHash.output.check(script)) return types.P2PKH
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if (scriptHash.output.check(script)) return types.P2SH
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// XXX: optimization, below functions .decompile before use
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const chunks = decompile(script)
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if (!chunks) throw new TypeError('Invalid script')
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if (multisig.output.check(chunks)) return types.MULTISIG
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if (pubKey.output.check(chunks)) return types.P2PK
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if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT
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if (nullData.output.check(chunks)) return types.NULLDATA
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return types.NONSTANDARD
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}
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function classifyInput (script, allowIncomplete) {
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// XXX: optimization, below functions .decompile before use
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const chunks = decompile(script)
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if (!chunks) throw new TypeError('Invalid script')
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if (pubKeyHash.input.check(chunks)) return types.P2PKH
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if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH
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if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG
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if (pubKey.input.check(chunks)) return types.P2PK
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return types.NONSTANDARD
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}
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function classifyWitness (script, allowIncomplete) {
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// XXX: optimization, below functions .decompile before use
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const chunks = decompile(script)
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if (!chunks) throw new TypeError('Invalid script')
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if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH
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if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH
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return types.NONSTANDARD
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}
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module.exports = {
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input: classifyInput,
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output: classifyOutput,
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witness: classifyWitness,
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types: types
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}
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