scripts: extract all scripts to encode/decode/check style
This commit is contained in:
Daniel Cousens
Daniel Cousens
parent
27b48e8aa2
commit
d9fa39a2cc
23 changed files with 852 additions and 729 deletions
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@ -28,8 +28,8 @@ function toBase58Check (hash, version) {
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function fromOutputScript (scriptPubKey, network) {
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network = network || networks.bitcoin
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if (bscript.isPubKeyHashOutput(scriptPubKey)) return toBase58Check(bscript.compile(scriptPubKey).slice(3, 23), network.pubKeyHash)
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if (bscript.isScriptHashOutput(scriptPubKey)) return toBase58Check(bscript.compile(scriptPubKey).slice(2, 22), network.scriptHash)
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if (bscript.pubKeyHash.output.check(scriptPubKey)) return toBase58Check(bscript.compile(scriptPubKey).slice(3, 23), network.pubKeyHash)
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if (bscript.scriptHash.output.check(scriptPubKey)) return toBase58Check(bscript.compile(scriptPubKey).slice(2, 22), network.scriptHash)
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throw new Error(bscript.toASM(scriptPubKey) + ' has no matching Address')
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}
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@ -38,8 +38,8 @@ function toOutputScript (address, network) {
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network = network || networks.bitcoin
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var decode = fromBase58Check(address)
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if (decode.version === network.pubKeyHash) return bscript.pubKeyHashOutput(decode.hash)
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if (decode.version === network.scriptHash) return bscript.scriptHashOutput(decode.hash)
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if (decode.version === network.pubKeyHash) return bscript.pubKeyHash.output.encode(decode.hash)
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if (decode.version === network.scriptHash) return bscript.scriptHash.output.encode(decode.hash)
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throw new Error(address + ' has no matching Script')
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}
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465
src/script.js
465
src/script.js
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@ -12,16 +12,6 @@ var REVERSE_OPS = (function () {
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return result
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})()
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var LIST_DECODE_NAMES = [
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decodePubKeyOutput,
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decodePubKeyHashOutput,
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decodeMultisigOutput,
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decodeNullDataOutput,
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decodeScriptHashOutput,
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decodeWitnessPubKeyHashOutput,
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decodeWitnessScriptHashOutput
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]
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var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
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function compile (chunks) {
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@ -169,410 +159,71 @@ function isCanonicalSignature (buffer) {
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return bip66.check(buffer.slice(0, -1))
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}
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function isPubKeyHashInput (script) {
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var chunks = decompile(script)
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return chunks.length === 2 &&
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isCanonicalSignature(chunks[0]) &&
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isCanonicalPubKey(chunks[1])
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}
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function decodePubKeyHashOutput (buffer, chunks) {
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if (buffer.length !== 25) {
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throw new Error('pub-key-hash output script is 25 bytes')
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}
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if (buffer[0] !== OPS.OP_DUP) {
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throw new Error('PubKeyHash script missing OP_DUP')
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}
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if (buffer[1] !== OPS.OP_HASH160) {
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throw new Error('PubKeyHash script missing OP_HASH160')
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}
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if (buffer[2] !== 0x14) {
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throw new Error('Incorrect opcode for pubkeyhash')
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}
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if (buffer[23] !== OPS.OP_EQUALVERIFY) {
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throw new Error('PubKeyHash script missing OP_EQUALVERIFY')
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}
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if (buffer[24] !== OPS.OP_CHECKSIG) {
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throw new Error('PubKeyHash script missing OP_CHECKSIG')
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}
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return {
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type: 'pubkeyhash',
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pubKeyHash: chunks[2]
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}
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}
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function isPubKeyHashOutput (script) {
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return determinesTypeOrNonstandard([decodePubKeyHashOutput], script) === 'pubkeyhash'
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}
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function isPubKeyInput (script) {
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var chunks = decompile(script)
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return chunks.length === 1 &&
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isCanonicalSignature(chunks[0])
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}
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function decodePubKeyOutput (script, chunks) {
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if (script[0] !== 0x21 && script[0] !== 0x41) {
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throw new Error('Bad (or non-minimal) public key length for pub')
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}
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if (!isCanonicalPubKey(chunks[0])) {
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throw new Error('pub-key output does not have a canonical public key')
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}
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if (chunks[1] !== OPS.OP_CHECKSIG) {
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throw new Error('pub-key output missing OP_CHECKSIG operator')
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}
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if (chunks.length !== 2) {
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throw new Error('pub-key output has two elements')
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}
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return {
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type: 'pubkey',
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publicKey: chunks[0]
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}
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}
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function isPubKeyOutput (script) {
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return determinesTypeOrNonstandard([decodePubKeyOutput], script) === 'pubkey'
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}
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function isScriptHashInput (script, allowIncomplete) {
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var chunks = decompile(script)
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if (chunks.length < 2) return false
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var lastChunk = chunks[chunks.length - 1]
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if (!Buffer.isBuffer(lastChunk)) return false
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var scriptSigChunks = chunks.slice(0, -1)
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var redeemScriptChunks = decompile(lastChunk)
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// is redeemScript a valid script?
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if (redeemScriptChunks.length === 0) return false
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return classifyInput(scriptSigChunks, allowIncomplete) === classifyOutput(lastChunk)
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}
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function decodeScriptHashOutput (chunks) {
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if (chunks[0] !== OPS.OP_HASH160) {
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throw new Error()
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}
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if (chunks[1] !== 0x14) {
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throw new Error()
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}
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if (chunks[22] !== OPS.OP_EQUAL) {
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throw new Error()
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}
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return {
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type: 'scripthash',
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scriptHash: chunks[1]
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}
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}
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function isScriptHashOutput (script) {
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return determinesTypeOrNonstandard([decodeScriptHashOutput], script) === 'scripthash'
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}
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function decodeWitnessPubKeyHashOutput (script, chunks) {
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if (script.length !== 22) {
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throw new Error('P2WPKH script should be 22 bytes')
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}
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if (script[0] !== OPS.OP_0) {
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throw new Error('Missing v0 prefix for witness keyhash')
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}
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if (script[1] !== 0x14) {
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throw new Error('Witness keyhash length marker is wrong')
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}
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return {
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type: 'witnesspubkeyhash',
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witnessKeyHash: chunks[2]
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}
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}
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function isWitnessPubKeyHashOutput (script) {
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return determinesTypeOrNonstandard([decodeWitnessPubKeyHashOutput], script) === 'witnesspubkeyhash'
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}
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function decodeWitnessScriptHashOutput (script, chunks) {
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if (script.length !== 34) {
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throw new Error('P2WSH script should be 34 bytes')
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}
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if (script[0] !== OPS.OP_0) {
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throw new Error('Missing v0 prefix for witness script hash')
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}
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if (script[1] !== 0x20) {
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throw new Error('Witness program length marker is wrong')
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}
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return {
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type: 'witnessscripthash',
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witnessScriptHash: chunks[2]
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}
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}
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function isWitnessScriptHashOutput (script) {
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return determinesTypeOrNonstandard([decodeWitnessScriptHashOutput], script) === 'witnessscripthash'
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}
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// allowIncomplete is to account for combining signatures
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// See https://github.com/bitcoin/bitcoin/blob/f425050546644a36b0b8e0eb2f6934a3e0f6f80f/src/script/sign.cpp#L195-L197
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function isMultisigInput (script, allowIncomplete) {
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var chunks = decompile(script)
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if (chunks.length < 2) return false
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if (chunks[0] !== OPS.OP_0) return false
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if (allowIncomplete) {
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return chunks.slice(1).every(function (chunk) {
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return chunk === OPS.OP_0 || isCanonicalSignature(chunk)
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})
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}
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return chunks.slice(1).every(isCanonicalSignature)
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}
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function decodeMultisigOutput (scriptPubKey, chunks) {
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if (chunks.length < 4) {
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throw new Error('Multisig script should contain at least 4 elements')
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}
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if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) {
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throw new Error('Final opcode should be OP_CHECKMULTISIG')
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}
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if (!types.Number(chunks[0])) {
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throw new Error('First element must be a number-push opcode')
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}
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if (!types.Number(chunks[chunks.length - 2])) {
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throw new Error('Second-last element must be a number-push opcode')
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}
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var m = chunks[0] - OP_INT_BASE
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var n = chunks[chunks.length - 2] - OP_INT_BASE
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if (m <= 0) {
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throw new Error('Number of signatures required must be greater than zero')
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}
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if (n > 16) {
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throw new Error('Number of public keys must be less than 17')
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}
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if (m > n) {
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throw new Error('Number of signatures cannot exceed the number of public keys')
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}
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if (n !== chunks.length - 3) {
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throw new Error('n does not match the number of public keys')
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}
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var keys = chunks.slice(1, -2)
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if (!keys.every(isCanonicalPubKey)) {
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throw new Error('Non-canonical pubic key found')
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}
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return {
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type: 'multisig',
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nRequiredSigs: m,
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nPublicKeys: n,
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publicKeyBuffers: keys
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}
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}
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function isMultisigOutput (script) {
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return determinesTypeOrNonstandard([decodeMultisigOutput], script) === 'multisig'
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}
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function isNullDataOutput (script) {
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return determinesTypeOrNonstandard([decodeNullDataOutput], script) === 'nulldata'
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}
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function decodeNullDataOutput (script, chunks) {
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if (script[0] !== OPS.OP_RETURN) {
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throw new Error('Missing OP_RETURN at start of script')
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}
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return {
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type: 'nulldata'
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}
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}
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function determinesTypeOrNonstandard (functions, script) {
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if (!types.Array(functions)) {
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throw new Error('Must provide an array of functions to determinesTypeOrNonstandard')
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}
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if (!types.Buffer(script)) {
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throw new Error('Must provide a script to determinesTypeOrNonstandard')
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}
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var decoded
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var decompiled = decompile(script)
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var type = 'nonstandard'
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for (var i = 0; i < functions.length && type === 'nonstandard'; i++) {
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try {
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decoded = functions[i](script, decompiled)
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type = decoded.type
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} catch (e) {
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}
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}
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return type
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}
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function classifyOutput (script) {
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return determinesTypeOrNonstandard(LIST_DECODE_NAMES, script)
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}
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function classifyInput (script, allowIncomplete) {
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var chunks = decompile(script)
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if (isPubKeyHashInput(chunks)) {
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return 'pubkeyhash'
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} else if (isMultisigInput(chunks, allowIncomplete)) {
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return 'multisig'
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} else if (isScriptHashInput(chunks, allowIncomplete)) {
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return 'scripthash'
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} else if (isPubKeyInput(chunks)) {
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return 'pubkey'
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}
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return 'nonstandard'
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}
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// Standard Script Templates
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// {pubKey} OP_CHECKSIG
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function pubKeyOutput (pubKey) {
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return compile([pubKey, OPS.OP_CHECKSIG])
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}
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// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
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function pubKeyHashOutput (pubKeyHash) {
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typeforce(types.Hash160bit, pubKeyHash)
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return compile([OPS.OP_DUP, OPS.OP_HASH160, pubKeyHash, OPS.OP_EQUALVERIFY, OPS.OP_CHECKSIG])
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}
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// OP_HASH160 {scriptHash} OP_EQUAL
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function scriptHashOutput (scriptHash) {
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typeforce(types.Hash160bit, scriptHash)
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return compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL])
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}
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// m [pubKeys ...] n OP_CHECKMULTISIG
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function multisigOutput (m, pubKeys) {
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typeforce(types.tuple(types.Number, [types.Buffer]), arguments)
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var n = pubKeys.length
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if (n < m) throw new Error('Not enough pubKeys provided')
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return compile([].concat(
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OP_INT_BASE + m,
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pubKeys,
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OP_INT_BASE + n,
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OPS.OP_CHECKMULTISIG
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))
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}
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// OP_0 {pubKeyHash}
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function witnessPubKeyHashOutput (pubKeyHash) {
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typeforce(types.Hash160bit, pubKeyHash)
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return compile([OPS.OP_0, pubKeyHash])
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}
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// OP_0 {scriptHash}
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function witnessScriptHashOutput (scriptHash) {
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typeforce(types.Hash256bit, scriptHash)
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return compile([OPS.OP_0, scriptHash])
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}
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// {signature}
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function pubKeyInput (signature) {
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typeforce(types.Buffer, signature)
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return compile([signature])
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}
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// {signature} {pubKey}
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function pubKeyHashInput (signature, pubKey) {
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typeforce(types.tuple(types.Buffer, types.Buffer), arguments)
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return compile([signature, pubKey])
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}
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// <scriptSig> {serialized scriptPubKey script}
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function scriptHashInput (scriptSig, scriptPubKey) {
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var scriptSigChunks = decompile(scriptSig)
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var serializedScriptPubKey = compile(scriptPubKey)
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return compile([].concat(
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scriptSigChunks,
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serializedScriptPubKey
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))
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}
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// <scriptSig> {serialized scriptPubKey script}
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function witnessScriptHashInput (scriptSig, scriptPubKey) {
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return scriptHashInput(scriptSig, scriptPubKey)
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}
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// OP_0 [signatures ...]
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function multisigInput (signatures, scriptPubKey) {
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if (scriptPubKey) {
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var scriptData = decodeMultisigOutput(scriptPubKey, decompile(scriptPubKey))
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if (signatures.length < scriptData.nRequiredSigs) throw new Error('Not enough signatures provided')
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if (signatures.length > scriptData.nPublicKeys) throw new Error('Too many signatures provided')
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}
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return compile([].concat(OPS.OP_0, signatures))
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}
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function nullDataOutput (data) {
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return compile([OPS.OP_RETURN, data])
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}
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module.exports = {
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compile: compile,
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decompile: decompile,
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fromASM: fromASM,
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toASM: toASM,
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number: require('./script_number'),
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isCanonicalPubKey: isCanonicalPubKey,
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isCanonicalSignature: isCanonicalSignature,
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isDefinedHashType: isDefinedHashType,
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decodePubKeyOutput: decodePubKeyOutput,
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decodePubKeyHashOutput: decodePubKeyHashOutput,
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decodeMultisigOutput: decodeMultisigOutput,
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decodeScriptHashOutput: decodeScriptHashOutput,
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decodeNullDataOutput: decodeNullDataOutput,
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decodeWitnessPubKeyHashOutput: decodeWitnessPubKeyHashOutput,
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decodeWitnessScriptHashOutput: decodeWitnessScriptHashOutput,
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isPubKeyOutput: isPubKeyOutput,
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isPubKeyHashOutput: isPubKeyHashOutput,
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isMultisigOutput: isMultisigOutput,
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isScriptHashOutput: isScriptHashOutput,
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isNullDataOutput: isNullDataOutput,
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isWitnessPubKeyHashOutput: isWitnessPubKeyHashOutput,
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isWitnessScriptHashOutput: isWitnessScriptHashOutput,
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classifyOutput: classifyOutput,
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isPubKeyInput: isPubKeyInput,
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isPubKeyHashInput: isPubKeyHashInput,
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isMultisigInput: isMultisigInput,
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isScriptHashInput: isScriptHashInput,
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classifyInput: classifyInput,
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pubKeyOutput: pubKeyOutput,
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pubKeyHashOutput: pubKeyHashOutput,
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multisigOutput: multisigOutput,
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scriptHashOutput: scriptHashOutput,
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nullDataOutput: nullDataOutput,
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witnessPubKeyHashOutput: witnessPubKeyHashOutput,
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witnessScriptHashOutput: witnessScriptHashOutput,
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pubKeyInput: pubKeyInput,
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pubKeyHashInput: pubKeyHashInput,
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multisigInput: multisigInput,
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scriptHashInput: scriptHashInput,
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witnessScriptHashInput: witnessScriptHashInput
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isDefinedHashType: isDefinedHashType
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}
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//
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var multisig = require('./templates/multisig')
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var nullData = require('./templates/nulldata')
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var pubKey = require('./templates/pubkey')
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var pubKeyHash = require('./templates/pubkeyhash')
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var scriptHash = require('./templates/scripthash')
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var witnessPubKeyHash = require('./templates/witnesspubkeyhash')
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var witnessScriptHash = require('./templates/witnessscripthash')
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function classifyOutput (script) {
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if (witnessPubKeyHash.output.check(script)) return 'witnesspubkeyhash'
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if (witnessScriptHash.output.check(script)) return 'witnessscripthash'
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if (pubKeyHash.output.check(script)) return 'pubkeyhash'
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if (scriptHash.output.check(script)) return 'scripthash'
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// XXX: optimization, below functions .decompile before use
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var chunks = decompile(script)
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if (multisig.output.check(chunks)) return 'multisig'
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if (pubKey.output.check(chunks)) return 'pubkey'
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if (nullData.output.check(chunks)) return 'nulldata'
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return '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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var chunks = decompile(script)
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if (pubKeyHash.input.check(chunks)) return 'pubkeyhash'
|
||||
if (scriptHash.input.check(chunks, allowIncomplete)) return 'scripthash'
|
||||
if (multisig.input.check(chunks, allowIncomplete)) return 'multisig'
|
||||
if (pubKey.input.check(chunks)) return 'pubkey'
|
||||
|
||||
return 'nonstandard'
|
||||
}
|
||||
|
||||
function classifyWitness (script, allowIncomplete) {
|
||||
// XXX: optimization, below functions .decompile before use
|
||||
var chunks = decompile(script)
|
||||
|
||||
if (pubKeyHash.input.check(chunks)) return 'witnesspubkeyhash'
|
||||
if (scriptHash.input.check(chunks)) return 'witnessscripthash'
|
||||
return 'nonstandard'
|
||||
}
|
||||
|
||||
module.exports.classifyInput = classifyInput
|
||||
module.exports.classifyOutput = classifyOutput
|
||||
module.exports.classifyWitness = classifyWitness
|
||||
module.exports.multisig = multisig
|
||||
module.exports.nullData = nullData
|
||||
module.exports.pubKey = pubKey
|
||||
module.exports.pubKeyHash = pubKeyHash
|
||||
module.exports.scriptHash = scriptHash
|
||||
module.exports.witnessPubKeyHash = witnessPubKeyHash
|
||||
module.exports.witnessScriptHash = witnessScriptHash
|
||||
|
|
|
|||
4
src/templates/multisig/index.js
Normal file
4
src/templates/multisig/index.js
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
module.exports = {
|
||||
input: require('./input'),
|
||||
output: require('./output')
|
||||
}
|
||||
54
src/templates/multisig/input.js
Normal file
54
src/templates/multisig/input.js
Normal file
|
|
@ -0,0 +1,54 @@
|
|||
// OP_0 [signatures ...]
|
||||
|
||||
var bscript = require('../../script')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function partialSignature (value) {
|
||||
return value === OPS.OP_0 || bscript.isCanonicalSignature(value)
|
||||
}
|
||||
|
||||
function check (script, allowIncomplete) {
|
||||
var chunks = bscript.decompile(script)
|
||||
if (chunks.length < 2) return false
|
||||
if (chunks[0] !== OPS.OP_0) return false
|
||||
|
||||
if (allowIncomplete) {
|
||||
return chunks.slice(1).every(partialSignature)
|
||||
}
|
||||
|
||||
return chunks.slice(1).every(bscript.isCanonicalSignature)
|
||||
}
|
||||
|
||||
function encode (signatures, scriptPubKey) {
|
||||
typeforce([partialSignature], signatures)
|
||||
|
||||
if (scriptPubKey) {
|
||||
var scriptData = bscript.multisig.output.decode(scriptPubKey)
|
||||
|
||||
if (signatures.length < scriptData.m) {
|
||||
throw new TypeError('Not enough signatures provided')
|
||||
}
|
||||
|
||||
if (signatures.length > scriptData.pubKeys.length) {
|
||||
throw new TypeError('Too many signatures provided')
|
||||
}
|
||||
}
|
||||
|
||||
return bscript.compile([].concat(OPS.OP_0, signatures))
|
||||
}
|
||||
|
||||
function decode (buffer, allowIncomplete) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks, allowIncomplete)
|
||||
|
||||
return {
|
||||
signatures: chunks.slice(1)
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
63
src/templates/multisig/output.js
Normal file
63
src/templates/multisig/output.js
Normal file
|
|
@ -0,0 +1,63 @@
|
|||
// m [pubKeys ...] n OP_CHECKMULTISIG
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
|
||||
|
||||
function check (script, allowIncomplete) {
|
||||
var chunks = bscript.decompile(script)
|
||||
|
||||
if (chunks.length < 4) return false
|
||||
if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false
|
||||
if (!types.Number(chunks[0])) return false
|
||||
if (!types.Number(chunks[chunks.length - 2])) return false
|
||||
var m = chunks[0] - OP_INT_BASE
|
||||
var n = chunks[chunks.length - 2] - OP_INT_BASE
|
||||
|
||||
if (m <= 0) return false
|
||||
if (n > 16) return false
|
||||
if (m > n) return false
|
||||
if (n !== chunks.length - 3) return false
|
||||
if (allowIncomplete) return true
|
||||
|
||||
var keys = chunks.slice(1, -2)
|
||||
return keys.every(bscript.isCanonicalPubKey)
|
||||
}
|
||||
|
||||
function encode (m, pubKeys) {
|
||||
typeforce({
|
||||
m: types.Number,
|
||||
pubKeys: [bscript.isCanonicalPubKey]
|
||||
}, {
|
||||
m: m,
|
||||
pubKeys: pubKeys
|
||||
})
|
||||
|
||||
var n = pubKeys.length
|
||||
if (n < m) throw new TypeError('Not enough pubKeys provided')
|
||||
|
||||
return bscript.compile([].concat(
|
||||
OP_INT_BASE + m,
|
||||
pubKeys,
|
||||
OP_INT_BASE + n,
|
||||
OPS.OP_CHECKMULTISIG
|
||||
))
|
||||
}
|
||||
|
||||
function decode (buffer, allowIncomplete) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks, allowIncomplete)
|
||||
|
||||
return {
|
||||
m: chunks[0] - OP_INT_BASE,
|
||||
pubKeys: chunks.slice(1, -2)
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
34
src/templates/nulldata.js
Normal file
34
src/templates/nulldata.js
Normal file
|
|
@ -0,0 +1,34 @@
|
|||
// OP_RETURN {data}
|
||||
|
||||
var bscript = require('../script')
|
||||
var types = require('../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var buffer = bscript.compile(script)
|
||||
|
||||
return buffer.length > 1 &&
|
||||
buffer[0] === OPS.OP_RETURN
|
||||
}
|
||||
|
||||
function encode (data) {
|
||||
typeforce(types.Buffer, data)
|
||||
|
||||
return bscript.compile([OPS.OP_RETURN, data])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
typeforce(check, buffer)
|
||||
|
||||
return buffer.slice(1)
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
output: {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
}
|
||||
|
||||
4
src/templates/pubkey/index.js
Normal file
4
src/templates/pubkey/index.js
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
module.exports = {
|
||||
input: require('./input'),
|
||||
output: require('./output')
|
||||
}
|
||||
31
src/templates/pubkey/input.js
Normal file
31
src/templates/pubkey/input.js
Normal file
|
|
@ -0,0 +1,31 @@
|
|||
// {signature}
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
|
||||
function check (script) {
|
||||
var chunks = bscript.decompile(script)
|
||||
|
||||
return chunks.length === 1 &&
|
||||
bscript.isCanonicalSignature(chunks[0])
|
||||
}
|
||||
|
||||
function encode (signature) {
|
||||
typeforce(types.Buffer, signature)
|
||||
|
||||
return bscript.compile([signature])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks)
|
||||
|
||||
return chunks[0]
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
32
src/templates/pubkey/output.js
Normal file
32
src/templates/pubkey/output.js
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
// {pubKey} OP_CHECKSIG
|
||||
|
||||
var bscript = require('../../script')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var chunks = bscript.decompile(script)
|
||||
|
||||
return chunks.length === 2 &&
|
||||
bscript.isCanonicalPubKey(chunks[0]) &&
|
||||
chunks[1] === OPS.OP_CHECKSIG
|
||||
}
|
||||
|
||||
function encode (pubKey) {
|
||||
typeforce(bscript.isCanonicalPubKey, pubKey)
|
||||
|
||||
return bscript.compile([pubKey, OPS.OP_CHECKSIG])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks)
|
||||
|
||||
return chunks[0]
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
4
src/templates/pubkeyhash/index.js
Normal file
4
src/templates/pubkeyhash/index.js
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
module.exports = {
|
||||
input: require('./input'),
|
||||
output: require('./output')
|
||||
}
|
||||
39
src/templates/pubkeyhash/input.js
Normal file
39
src/templates/pubkeyhash/input.js
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
// {pubKey} OP_CHECKSIG
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
|
||||
function check (script) {
|
||||
var chunks = bscript.decompile(script)
|
||||
|
||||
return chunks.length === 2 &&
|
||||
bscript.isCanonicalSignature(chunks[0]) &&
|
||||
bscript.isCanonicalPubKey(chunks[1])
|
||||
}
|
||||
|
||||
function encode (signature, pubKey) {
|
||||
typeforce({
|
||||
signature: types.Buffer, pubKey: types.Buffer
|
||||
}, {
|
||||
signature: signature, pubKey: pubKey
|
||||
})
|
||||
|
||||
return bscript.compile([signature, pubKey])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks)
|
||||
|
||||
return {
|
||||
signature: chunks[0],
|
||||
pubKey: chunks[1]
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
41
src/templates/pubkeyhash/output.js
Normal file
41
src/templates/pubkeyhash/output.js
Normal file
|
|
@ -0,0 +1,41 @@
|
|||
// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var buffer = bscript.compile(script)
|
||||
|
||||
return buffer.length === 25 &&
|
||||
buffer[0] === OPS.OP_DUP &&
|
||||
buffer[1] === OPS.OP_HASH160 &&
|
||||
buffer[2] === 0x14 &&
|
||||
buffer[23] === OPS.OP_EQUALVERIFY &&
|
||||
buffer[24] === OPS.OP_CHECKSIG
|
||||
}
|
||||
|
||||
function encode (pubKeyHash) {
|
||||
typeforce(types.Hash160bit, pubKeyHash)
|
||||
|
||||
return bscript.compile([
|
||||
OPS.OP_DUP,
|
||||
OPS.OP_HASH160,
|
||||
pubKeyHash,
|
||||
OPS.OP_EQUALVERIFY,
|
||||
OPS.OP_CHECKSIG
|
||||
])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
typeforce(check, buffer)
|
||||
|
||||
return buffer.slice(3, 23)
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
4
src/templates/scripthash/index.js
Normal file
4
src/templates/scripthash/index.js
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
module.exports = {
|
||||
input: require('./input'),
|
||||
output: require('./output')
|
||||
}
|
||||
48
src/templates/scripthash/input.js
Normal file
48
src/templates/scripthash/input.js
Normal file
|
|
@ -0,0 +1,48 @@
|
|||
// <scriptSig> {serialized scriptPubKey script}
|
||||
|
||||
var bscript = require('../../script')
|
||||
var typeforce = require('typeforce')
|
||||
|
||||
function check (script, allowIncomplete) {
|
||||
var chunks = bscript.decompile(script)
|
||||
if (chunks.length < 2) return false
|
||||
|
||||
var lastChunk = chunks[chunks.length - 1]
|
||||
if (!Buffer.isBuffer(lastChunk)) return false
|
||||
|
||||
var scriptSigChunks = chunks.slice(0, -1)
|
||||
var redeemScriptChunks = bscript.decompile(lastChunk)
|
||||
|
||||
// is redeemScript a valid script?
|
||||
if (redeemScriptChunks.length === 0) return false
|
||||
|
||||
var inputType = bscript.classifyInput(scriptSigChunks, allowIncomplete)
|
||||
var outputType = bscript.classifyOutput(redeemScriptChunks)
|
||||
return inputType === outputType
|
||||
}
|
||||
|
||||
function encode (scriptSignature, scriptPubKey) {
|
||||
var scriptSigChunks = bscript.decompile(scriptSignature)
|
||||
var serializedScriptPubKey = bscript.compile(scriptPubKey)
|
||||
|
||||
return bscript.compile([].concat(
|
||||
scriptSigChunks,
|
||||
serializedScriptPubKey
|
||||
))
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
var chunks = bscript.decompile(buffer)
|
||||
typeforce(check, chunks)
|
||||
|
||||
return {
|
||||
scriptSignature: chunks.slice(0, -1),
|
||||
scriptPubKey: chunks[chunks.length - 1]
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
33
src/templates/scripthash/output.js
Normal file
33
src/templates/scripthash/output.js
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
// OP_HASH160 {scriptHash} OP_EQUAL
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var buffer = bscript.compile(script)
|
||||
|
||||
return buffer.length === 23 &&
|
||||
buffer[0] === OPS.OP_HASH160 &&
|
||||
buffer[1] === 0x14 &&
|
||||
buffer[22] === OPS.OP_EQUAL
|
||||
}
|
||||
|
||||
function encode (scriptHash) {
|
||||
typeforce(types.Hash160bit, scriptHash)
|
||||
|
||||
return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
typeforce(check, buffer)
|
||||
|
||||
return buffer.slice(2, 22)
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
3
src/templates/witnesspubkeyhash/index.js
Normal file
3
src/templates/witnesspubkeyhash/index.js
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
module.exports = {
|
||||
output: require('./output')
|
||||
}
|
||||
32
src/templates/witnesspubkeyhash/output.js
Normal file
32
src/templates/witnesspubkeyhash/output.js
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
// OP_0 {pubKeyHash}
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var buffer = bscript.compile(script)
|
||||
|
||||
return buffer.length === 22 &&
|
||||
buffer[0] === OPS.OP_0 &&
|
||||
buffer[1] === 0x14
|
||||
}
|
||||
|
||||
function encode (pubKeyHash) {
|
||||
typeforce(types.Hash160bit, pubKeyHash)
|
||||
|
||||
return bscript.compile([OPS.OP_0, pubKeyHash])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
typeforce(check, buffer)
|
||||
|
||||
return buffer.slice(2)
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
3
src/templates/witnessscripthash/index.js
Normal file
3
src/templates/witnessscripthash/index.js
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
module.exports = {
|
||||
output: require('./output')
|
||||
}
|
||||
32
src/templates/witnessscripthash/output.js
Normal file
32
src/templates/witnessscripthash/output.js
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
// OP_0 {scriptHash}
|
||||
|
||||
var bscript = require('../../script')
|
||||
var types = require('../../types')
|
||||
var typeforce = require('typeforce')
|
||||
var OPS = require('../../opcodes.json')
|
||||
|
||||
function check (script) {
|
||||
var buffer = bscript.compile(script)
|
||||
|
||||
return buffer.length === 34 &&
|
||||
buffer[0] === OPS.OP_0 &&
|
||||
buffer[1] === 0x20
|
||||
}
|
||||
|
||||
function encode (scriptHash) {
|
||||
typeforce(types.Hash256bit, scriptHash)
|
||||
|
||||
return bscript.compile([OPS.OP_0, scriptHash])
|
||||
}
|
||||
|
||||
function decode (buffer) {
|
||||
typeforce(check, buffer)
|
||||
|
||||
return buffer.slice(2)
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
check: check,
|
||||
decode: decode,
|
||||
encode: encode
|
||||
}
|
||||
|
|
@ -29,7 +29,7 @@ function expandInput (scriptSig, redeemScript) {
|
|||
var result = expandInput(redeemScriptSig, redeemScript)
|
||||
result.redeemScript = redeemScript
|
||||
result.redeemScriptType = result.prevOutType
|
||||
result.prevOutScript = bscript.scriptHashOutput(bcrypto.hash160(redeemScript))
|
||||
result.prevOutScript = bscript.scriptHash.output.encode(bcrypto.hash160(redeemScript))
|
||||
result.prevOutType = 'scripthash'
|
||||
return result
|
||||
|
||||
|
|
@ -39,7 +39,7 @@ function expandInput (scriptSig, redeemScript) {
|
|||
signatures = scriptSigChunks.slice(0, 1)
|
||||
|
||||
if (redeemScript) break
|
||||
prevOutScript = bscript.pubKeyHashOutput(bcrypto.hash160(pubKeys[0]))
|
||||
prevOutScript = bscript.pubKeyHash.output.encode(bcrypto.hash160(pubKeys[0]))
|
||||
break
|
||||
|
||||
case 'pubkey':
|
||||
|
|
@ -161,7 +161,7 @@ function prepareInput (input, kpPubKey, redeemScript) {
|
|||
input.signatures = expanded.signatures
|
||||
input.redeemScript = redeemScript
|
||||
input.redeemScriptType = expanded.scriptType
|
||||
input.prevOutScript = input.prevOutScript || bscript.scriptHashOutput(redeemScriptHash)
|
||||
input.prevOutScript = input.prevOutScript || bscript.scriptHash.output.encode(redeemScriptHash)
|
||||
input.prevOutType = 'scripthash'
|
||||
|
||||
// maybe we have some prevOut knowledge
|
||||
|
|
@ -178,7 +178,7 @@ function prepareInput (input, kpPubKey, redeemScript) {
|
|||
|
||||
// no prior knowledge, assume pubKeyHash
|
||||
} else {
|
||||
input.prevOutScript = bscript.pubKeyHashOutput(bcrypto.hash160(kpPubKey))
|
||||
input.prevOutScript = bscript.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey))
|
||||
input.prevOutType = 'pubkeyhash'
|
||||
input.pubKeys = [kpPubKey]
|
||||
input.signatures = [undefined]
|
||||
|
|
@ -195,9 +195,9 @@ function buildInput (input, allowIncomplete) {
|
|||
case 'pubkey':
|
||||
if (signatures.length < 1 || !signatures[0]) throw new Error('Not enough signatures provided')
|
||||
if (scriptType === 'pubkeyhash') {
|
||||
scriptSig = bscript.pubKeyHashInput(signatures[0], input.pubKeys[0])
|
||||
scriptSig = bscript.pubKeyHash.input.encode(signatures[0], input.pubKeys[0])
|
||||
} else {
|
||||
scriptSig = bscript.pubKeyInput(signatures[0])
|
||||
scriptSig = bscript.pubKey.input.encode(signatures[0])
|
||||
}
|
||||
|
||||
break
|
||||
|
|
@ -213,7 +213,7 @@ function buildInput (input, allowIncomplete) {
|
|||
signatures = signatures.filter(function (x) { return x !== ops.OP_0 })
|
||||
}
|
||||
|
||||
scriptSig = bscript.multisigInput(signatures, allowIncomplete ? undefined : input.redeemScript)
|
||||
scriptSig = bscript.multisig.input.encode(signatures, allowIncomplete ? undefined : input.redeemScript)
|
||||
break
|
||||
|
||||
default: return
|
||||
|
|
@ -221,7 +221,7 @@ function buildInput (input, allowIncomplete) {
|
|||
|
||||
// wrap as scriptHash if necessary
|
||||
if (input.prevOutType === 'scripthash') {
|
||||
scriptSig = bscript.scriptHashInput(scriptSig, input.redeemScript)
|
||||
scriptSig = bscript.scriptHash.input.encode(scriptSig, input.redeemScript)
|
||||
}
|
||||
|
||||
return scriptSig
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue