Refactor: Re-order helper functions based on like-kind
This commit is contained in:
junderw
parent
2fd4b9dc54
commit
479c56bbb4
2 changed files with 681 additions and 698 deletions
606
src/psbt.js
606
src/psbt.js
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@ -352,31 +352,120 @@ class Psbt extends bip174_1.Psbt {
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}
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}
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exports.Psbt = Psbt;
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function addNonWitnessTxCache(cache, input, inputIndex) {
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cache.__NON_WITNESS_UTXO_BUF_CACHE[inputIndex] = input.nonWitnessUtxo;
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const tx = transaction_1.Transaction.fromBuffer(input.nonWitnessUtxo);
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cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex] = tx;
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const self = cache;
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const selfIndex = inputIndex;
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delete input.nonWitnessUtxo;
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Object.defineProperty(input, 'nonWitnessUtxo', {
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enumerable: true,
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get() {
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const buf = self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex];
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const txCache = self.__NON_WITNESS_UTXO_TX_CACHE[selfIndex];
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if (buf !== undefined) {
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return buf;
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} else {
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const newBuf = txCache.toBuffer();
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self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = newBuf;
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return newBuf;
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function canFinalize(input, script, scriptType) {
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switch (scriptType) {
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case 'pubkey':
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case 'pubkeyhash':
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case 'witnesspubkeyhash':
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return hasSigs(1, input.partialSig);
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case 'multisig':
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const p2ms = payments.p2ms({ output: script });
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return hasSigs(p2ms.m, input.partialSig);
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default:
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return false;
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}
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}
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function hasSigs(neededSigs, partialSig) {
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if (!partialSig) return false;
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if (partialSig.length > neededSigs) throw new Error('Too many signatures');
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return partialSig.length === neededSigs;
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}
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function isFinalized(input) {
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return !!input.finalScriptSig || !!input.finalScriptWitness;
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}
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function isPaymentFactory(payment) {
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return script => {
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try {
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payment({ output: script });
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return true;
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} catch (err) {
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return false;
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}
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};
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}
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const isP2MS = isPaymentFactory(payments.p2ms);
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const isP2PK = isPaymentFactory(payments.p2pk);
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const isP2PKH = isPaymentFactory(payments.p2pkh);
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const isP2WPKH = isPaymentFactory(payments.p2wpkh);
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function check32Bit(num) {
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if (
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typeof num !== 'number' ||
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num !== Math.floor(num) ||
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num > 0xffffffff ||
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num < 0
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) {
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throw new Error('Invalid 32 bit integer');
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}
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}
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function checkFees(psbt, cache, opts) {
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const feeRate = cache.__FEE_RATE || psbt.getFeeRate();
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const vsize = cache.__EXTRACTED_TX.virtualSize();
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const satoshis = feeRate * vsize;
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if (feeRate >= opts.maximumFeeRate) {
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throw new Error(
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`Warning: You are paying around ${(satoshis / 1e8).toFixed(8)} in ` +
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`fees, which is ${feeRate} satoshi per byte for a transaction ` +
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`with a VSize of ${vsize} bytes (segwit counted as 0.25 byte per ` +
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`byte). Use setMaximumFeeRate method to raise your threshold, or ` +
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`pass true to the first arg of extractTransaction.`,
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);
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}
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}
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function checkInputsForPartialSig(inputs, action) {
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inputs.forEach(input => {
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let throws = false;
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if ((input.partialSig || []).length === 0) return;
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input.partialSig.forEach(pSig => {
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const { hashType } = bscript.signature.decode(pSig.signature);
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const whitelist = [];
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const isAnyoneCanPay =
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hashType & transaction_1.Transaction.SIGHASH_ANYONECANPAY;
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if (isAnyoneCanPay) whitelist.push('addInput');
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const hashMod = hashType & 0x1f;
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switch (hashMod) {
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case transaction_1.Transaction.SIGHASH_ALL:
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break;
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case transaction_1.Transaction.SIGHASH_SINGLE:
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case transaction_1.Transaction.SIGHASH_NONE:
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whitelist.push('addOutput');
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whitelist.push('setSequence');
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break;
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}
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},
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set(data) {
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self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = data;
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},
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if (whitelist.indexOf(action) === -1) {
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throws = true;
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}
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});
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if (throws) {
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throw new Error('Can not modify transaction, signatures exist.');
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}
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});
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}
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function checkScriptForPubkey(pubkey, script, action) {
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const pubkeyHash = crypto_1.hash160(pubkey);
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const decompiled = bscript.decompile(script);
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if (decompiled === null) throw new Error('Unknown script error');
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const hasKey = decompiled.some(element => {
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if (typeof element === 'number') return false;
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return element.equals(pubkey) || element.equals(pubkeyHash);
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});
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if (!hasKey) {
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throw new Error(
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`Can not ${action} for this input with the key ${pubkey.toString('hex')}`,
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);
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}
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}
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function checkTxEmpty(tx) {
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const isEmpty = tx.ins.every(
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input =>
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input.script &&
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input.script.length === 0 &&
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input.witness &&
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input.witness.length === 0,
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);
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if (!isEmpty) {
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throw new Error('Format Error: Transaction ScriptSigs are not empty');
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}
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}
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function checkTxForDupeIns(tx, cache) {
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tx.ins.forEach(input => {
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checkTxInputCache(cache, input);
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@ -390,18 +479,23 @@ function checkTxInputCache(cache, input) {
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if (cache.__TX_IN_CACHE[key]) throw new Error('Duplicate input detected.');
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cache.__TX_IN_CACHE[key] = 1;
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}
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function isFinalized(input) {
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return !!input.finalScriptSig || !!input.finalScriptWitness;
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}
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function getHashAndSighashType(inputs, inputIndex, pubkey, cache) {
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const input = utils_1.checkForInput(inputs, inputIndex);
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const { hash, sighashType, script } = getHashForSig(inputIndex, input, cache);
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checkScriptForPubkey(pubkey, script, 'sign');
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return {
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hash,
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sighashType,
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function scriptCheckerFactory(payment, paymentScriptName) {
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return (inputIndex, scriptPubKey, redeemScript) => {
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const redeemScriptOutput = payment({
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redeem: { output: redeemScript },
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}).output;
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if (!scriptPubKey.equals(redeemScriptOutput)) {
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throw new Error(
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`${paymentScriptName} for input #${inputIndex} doesn't match the scriptPubKey in the prevout`,
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);
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}
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};
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}
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const checkRedeemScript = scriptCheckerFactory(payments.p2sh, 'Redeem script');
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const checkWitnessScript = scriptCheckerFactory(
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payments.p2wsh,
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'Witness script',
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);
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function getFinalScripts(
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script,
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scriptType,
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@ -437,81 +531,14 @@ function getFinalScripts(
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finalScriptWitness,
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};
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}
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function getSortedSigs(script, partialSig) {
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const p2ms = payments.p2ms({ output: script });
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// for each pubkey in order of p2ms script
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return p2ms.pubkeys
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.map(pk => {
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// filter partialSig array by pubkey being equal
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return (
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partialSig.filter(ps => {
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return ps.pubkey.equals(pk);
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})[0] || {}
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).signature;
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// Any pubkey without a match will return undefined
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// this last filter removes all the undefined items in the array.
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})
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.filter(v => !!v);
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}
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function getPayment(script, scriptType, partialSig) {
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let payment;
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switch (scriptType) {
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case 'multisig':
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const sigs = getSortedSigs(script, partialSig);
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payment = payments.p2ms({
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output: script,
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signatures: sigs,
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});
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break;
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case 'pubkey':
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payment = payments.p2pk({
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output: script,
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signature: partialSig[0].signature,
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});
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break;
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case 'pubkeyhash':
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payment = payments.p2pkh({
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output: script,
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pubkey: partialSig[0].pubkey,
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signature: partialSig[0].signature,
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});
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break;
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case 'witnesspubkeyhash':
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payment = payments.p2wpkh({
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output: script,
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pubkey: partialSig[0].pubkey,
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signature: partialSig[0].signature,
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});
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break;
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}
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return payment;
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}
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function canFinalize(input, script, scriptType) {
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switch (scriptType) {
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case 'pubkey':
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case 'pubkeyhash':
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case 'witnesspubkeyhash':
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return hasSigs(1, input.partialSig);
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case 'multisig':
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const p2ms = payments.p2ms({ output: script });
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return hasSigs(p2ms.m, input.partialSig);
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default:
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return false;
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}
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}
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function checkScriptForPubkey(pubkey, script, action) {
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const pubkeyHash = crypto_1.hash160(pubkey);
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const decompiled = bscript.decompile(script);
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if (decompiled === null) throw new Error('Unknown script error');
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const hasKey = decompiled.some(element => {
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if (typeof element === 'number') return false;
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return element.equals(pubkey) || element.equals(pubkeyHash);
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});
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if (!hasKey) {
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throw new Error(
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`Can not ${action} for this input with the key ${pubkey.toString('hex')}`,
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);
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}
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function getHashAndSighashType(inputs, inputIndex, pubkey, cache) {
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const input = utils_1.checkForInput(inputs, inputIndex);
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const { hash, sighashType, script } = getHashForSig(inputIndex, input, cache);
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checkScriptForPubkey(pubkey, script, 'sign');
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return {
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hash,
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sighashType,
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};
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}
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function getHashForSig(inputIndex, input, cache) {
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const unsignedTx = cache.__TX;
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@ -597,182 +624,6 @@ function getHashForSig(inputIndex, input, cache) {
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hash,
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};
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}
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function scriptCheckerFactory(payment, paymentScriptName) {
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return (inputIndex, scriptPubKey, redeemScript) => {
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const redeemScriptOutput = payment({
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redeem: { output: redeemScript },
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}).output;
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if (!scriptPubKey.equals(redeemScriptOutput)) {
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throw new Error(
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`${paymentScriptName} for input #${inputIndex} doesn't match the scriptPubKey in the prevout`,
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);
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}
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};
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}
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const checkRedeemScript = scriptCheckerFactory(payments.p2sh, 'Redeem script');
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const checkWitnessScript = scriptCheckerFactory(
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payments.p2wsh,
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'Witness script',
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);
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function isPaymentFactory(payment) {
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return script => {
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try {
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payment({ output: script });
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return true;
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} catch (err) {
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return false;
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}
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};
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}
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const isP2WPKH = isPaymentFactory(payments.p2wpkh);
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const isP2PKH = isPaymentFactory(payments.p2pkh);
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const isP2MS = isPaymentFactory(payments.p2ms);
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const isP2PK = isPaymentFactory(payments.p2pk);
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function classifyScript(script) {
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if (isP2WPKH(script)) return 'witnesspubkeyhash';
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if (isP2PKH(script)) return 'pubkeyhash';
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if (isP2MS(script)) return 'multisig';
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if (isP2PK(script)) return 'pubkey';
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return 'nonstandard';
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}
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function getScriptFromInput(inputIndex, input, cache) {
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const unsignedTx = cache.__TX;
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const res = {
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script: null,
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isSegwit: false,
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isP2SH: false,
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isP2WSH: false,
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};
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if (input.nonWitnessUtxo) {
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if (input.redeemScript) {
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res.isP2SH = true;
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res.script = input.redeemScript;
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} else {
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const nonWitnessUtxoTx = nonWitnessUtxoTxFromCache(
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cache,
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input,
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inputIndex,
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);
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const prevoutIndex = unsignedTx.ins[inputIndex].index;
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res.script = nonWitnessUtxoTx.outs[prevoutIndex].script;
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}
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} else if (input.witnessUtxo) {
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res.isSegwit = true;
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res.isP2SH = !!input.redeemScript;
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res.isP2WSH = !!input.witnessScript;
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if (input.witnessScript) {
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res.script = input.witnessScript;
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} else if (input.redeemScript) {
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res.script = payments.p2wpkh({
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hash: input.redeemScript.slice(2),
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}).output;
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} else {
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res.script = payments.p2wpkh({
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hash: input.witnessUtxo.script.slice(2),
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}).output;
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}
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}
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return res;
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}
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function hasSigs(neededSigs, partialSig) {
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if (!partialSig) return false;
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if (partialSig.length > neededSigs) throw new Error('Too many signatures');
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return partialSig.length === neededSigs;
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}
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function witnessStackToScriptWitness(witness) {
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let buffer = Buffer.allocUnsafe(0);
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function writeSlice(slice) {
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buffer = Buffer.concat([buffer, Buffer.from(slice)]);
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}
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function writeVarInt(i) {
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const currentLen = buffer.length;
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const varintLen = varuint.encodingLength(i);
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buffer = Buffer.concat([buffer, Buffer.allocUnsafe(varintLen)]);
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varuint.encode(i, buffer, currentLen);
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}
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function writeVarSlice(slice) {
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writeVarInt(slice.length);
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writeSlice(slice);
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}
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function writeVector(vector) {
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writeVarInt(vector.length);
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vector.forEach(writeVarSlice);
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}
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writeVector(witness);
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return buffer;
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}
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function scriptWitnessToWitnessStack(buffer) {
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let offset = 0;
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function readSlice(n) {
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offset += n;
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return buffer.slice(offset - n, offset);
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}
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function readVarInt() {
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const vi = varuint.decode(buffer, offset);
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offset += varuint.decode.bytes;
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return vi;
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}
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function readVarSlice() {
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return readSlice(readVarInt());
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}
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function readVector() {
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const count = readVarInt();
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const vector = [];
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for (let i = 0; i < count; i++) vector.push(readVarSlice());
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return vector;
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}
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return readVector();
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}
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function range(n) {
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return [...Array(n).keys()];
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}
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function checkTxEmpty(tx) {
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const isEmpty = tx.ins.every(
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input =>
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input.script &&
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input.script.length === 0 &&
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input.witness &&
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input.witness.length === 0,
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);
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if (!isEmpty) {
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throw new Error('Format Error: Transaction ScriptSigs are not empty');
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}
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}
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function checkInputsForPartialSig(inputs, action) {
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inputs.forEach(input => {
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let throws = false;
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if ((input.partialSig || []).length === 0) return;
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input.partialSig.forEach(pSig => {
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const { hashType } = bscript.signature.decode(pSig.signature);
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const whitelist = [];
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const isAnyoneCanPay =
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hashType & transaction_1.Transaction.SIGHASH_ANYONECANPAY;
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if (isAnyoneCanPay) whitelist.push('addInput');
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const hashMod = hashType & 0x1f;
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switch (hashMod) {
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case transaction_1.Transaction.SIGHASH_ALL:
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break;
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case transaction_1.Transaction.SIGHASH_SINGLE:
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case transaction_1.Transaction.SIGHASH_NONE:
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whitelist.push('addOutput');
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whitelist.push('setSequence');
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break;
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}
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if (whitelist.indexOf(action) === -1) {
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throws = true;
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}
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});
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if (throws) {
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throw new Error('Can not modify transaction, signatures exist.');
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}
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});
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}
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function nonWitnessUtxoTxFromCache(cache, input, inputIndex) {
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if (!cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex]) {
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addNonWitnessTxCache(cache, input, inputIndex);
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}
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return cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex];
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}
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function getInputAdder(cache) {
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const selfCache = cache;
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return (_inputData, txBuf) => {
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@ -822,19 +673,162 @@ function getOutputAdder(cache) {
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return selfCache.__TX.toBuffer();
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};
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}
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function checkFees(psbt, cache, opts) {
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const feeRate = cache.__FEE_RATE || psbt.getFeeRate();
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const vsize = cache.__EXTRACTED_TX.virtualSize();
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const satoshis = feeRate * vsize;
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if (feeRate >= opts.maximumFeeRate) {
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throw new Error(
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`Warning: You are paying around ${(satoshis / 1e8).toFixed(8)} in ` +
|
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`fees, which is ${feeRate} satoshi per byte for a transaction ` +
|
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`with a VSize of ${vsize} bytes (segwit counted as 0.25 byte per ` +
|
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`byte). Use setMaximumFeeRate method to raise your threshold, or ` +
|
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`pass true to the first arg of extractTransaction.`,
|
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);
|
||||
function getPayment(script, scriptType, partialSig) {
|
||||
let payment;
|
||||
switch (scriptType) {
|
||||
case 'multisig':
|
||||
const sigs = getSortedSigs(script, partialSig);
|
||||
payment = payments.p2ms({
|
||||
output: script,
|
||||
signatures: sigs,
|
||||
});
|
||||
break;
|
||||
case 'pubkey':
|
||||
payment = payments.p2pk({
|
||||
output: script,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'pubkeyhash':
|
||||
payment = payments.p2pkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'witnesspubkeyhash':
|
||||
payment = payments.p2wpkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
}
|
||||
return payment;
|
||||
}
|
||||
function getScriptFromInput(inputIndex, input, cache) {
|
||||
const unsignedTx = cache.__TX;
|
||||
const res = {
|
||||
script: null,
|
||||
isSegwit: false,
|
||||
isP2SH: false,
|
||||
isP2WSH: false,
|
||||
};
|
||||
if (input.nonWitnessUtxo) {
|
||||
if (input.redeemScript) {
|
||||
res.isP2SH = true;
|
||||
res.script = input.redeemScript;
|
||||
} else {
|
||||
const nonWitnessUtxoTx = nonWitnessUtxoTxFromCache(
|
||||
cache,
|
||||
input,
|
||||
inputIndex,
|
||||
);
|
||||
const prevoutIndex = unsignedTx.ins[inputIndex].index;
|
||||
res.script = nonWitnessUtxoTx.outs[prevoutIndex].script;
|
||||
}
|
||||
} else if (input.witnessUtxo) {
|
||||
res.isSegwit = true;
|
||||
res.isP2SH = !!input.redeemScript;
|
||||
res.isP2WSH = !!input.witnessScript;
|
||||
if (input.witnessScript) {
|
||||
res.script = input.witnessScript;
|
||||
} else if (input.redeemScript) {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.redeemScript.slice(2),
|
||||
}).output;
|
||||
} else {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.witnessUtxo.script.slice(2),
|
||||
}).output;
|
||||
}
|
||||
}
|
||||
return res;
|
||||
}
|
||||
function getSortedSigs(script, partialSig) {
|
||||
const p2ms = payments.p2ms({ output: script });
|
||||
// for each pubkey in order of p2ms script
|
||||
return p2ms.pubkeys
|
||||
.map(pk => {
|
||||
// filter partialSig array by pubkey being equal
|
||||
return (
|
||||
partialSig.filter(ps => {
|
||||
return ps.pubkey.equals(pk);
|
||||
})[0] || {}
|
||||
).signature;
|
||||
// Any pubkey without a match will return undefined
|
||||
// this last filter removes all the undefined items in the array.
|
||||
})
|
||||
.filter(v => !!v);
|
||||
}
|
||||
function scriptWitnessToWitnessStack(buffer) {
|
||||
let offset = 0;
|
||||
function readSlice(n) {
|
||||
offset += n;
|
||||
return buffer.slice(offset - n, offset);
|
||||
}
|
||||
function readVarInt() {
|
||||
const vi = varuint.decode(buffer, offset);
|
||||
offset += varuint.decode.bytes;
|
||||
return vi;
|
||||
}
|
||||
function readVarSlice() {
|
||||
return readSlice(readVarInt());
|
||||
}
|
||||
function readVector() {
|
||||
const count = readVarInt();
|
||||
const vector = [];
|
||||
for (let i = 0; i < count; i++) vector.push(readVarSlice());
|
||||
return vector;
|
||||
}
|
||||
return readVector();
|
||||
}
|
||||
function witnessStackToScriptWitness(witness) {
|
||||
let buffer = Buffer.allocUnsafe(0);
|
||||
function writeSlice(slice) {
|
||||
buffer = Buffer.concat([buffer, Buffer.from(slice)]);
|
||||
}
|
||||
function writeVarInt(i) {
|
||||
const currentLen = buffer.length;
|
||||
const varintLen = varuint.encodingLength(i);
|
||||
buffer = Buffer.concat([buffer, Buffer.allocUnsafe(varintLen)]);
|
||||
varuint.encode(i, buffer, currentLen);
|
||||
}
|
||||
function writeVarSlice(slice) {
|
||||
writeVarInt(slice.length);
|
||||
writeSlice(slice);
|
||||
}
|
||||
function writeVector(vector) {
|
||||
writeVarInt(vector.length);
|
||||
vector.forEach(writeVarSlice);
|
||||
}
|
||||
writeVector(witness);
|
||||
return buffer;
|
||||
}
|
||||
function addNonWitnessTxCache(cache, input, inputIndex) {
|
||||
cache.__NON_WITNESS_UTXO_BUF_CACHE[inputIndex] = input.nonWitnessUtxo;
|
||||
const tx = transaction_1.Transaction.fromBuffer(input.nonWitnessUtxo);
|
||||
cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex] = tx;
|
||||
const self = cache;
|
||||
const selfIndex = inputIndex;
|
||||
delete input.nonWitnessUtxo;
|
||||
Object.defineProperty(input, 'nonWitnessUtxo', {
|
||||
enumerable: true,
|
||||
get() {
|
||||
const buf = self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex];
|
||||
const txCache = self.__NON_WITNESS_UTXO_TX_CACHE[selfIndex];
|
||||
if (buf !== undefined) {
|
||||
return buf;
|
||||
} else {
|
||||
const newBuf = txCache.toBuffer();
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = newBuf;
|
||||
return newBuf;
|
||||
}
|
||||
},
|
||||
set(data) {
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = data;
|
||||
},
|
||||
});
|
||||
}
|
||||
function inputFinalizeGetAmts(inputs, tx, cache, mustFinalize, getAmounts) {
|
||||
let inputAmount = 0;
|
||||
|
|
@ -857,13 +851,19 @@ function inputFinalizeGetAmts(inputs, tx, cache, mustFinalize, getAmounts) {
|
|||
});
|
||||
return inputAmount;
|
||||
}
|
||||
function check32Bit(num) {
|
||||
if (
|
||||
typeof num !== 'number' ||
|
||||
num !== Math.floor(num) ||
|
||||
num > 0xffffffff ||
|
||||
num < 0
|
||||
) {
|
||||
throw new Error('Invalid 32 bit integer');
|
||||
function nonWitnessUtxoTxFromCache(cache, input, inputIndex) {
|
||||
if (!cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex]) {
|
||||
addNonWitnessTxCache(cache, input, inputIndex);
|
||||
}
|
||||
return cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex];
|
||||
}
|
||||
function classifyScript(script) {
|
||||
if (isP2WPKH(script)) return 'witnesspubkeyhash';
|
||||
if (isP2PKH(script)) return 'pubkeyhash';
|
||||
if (isP2MS(script)) return 'multisig';
|
||||
if (isP2PK(script)) return 'pubkey';
|
||||
return 'nonstandard';
|
||||
}
|
||||
function range(n) {
|
||||
return [...Array(n).keys()];
|
||||
}
|
||||
|
|
|
|||
773
ts_src/psbt.ts
773
ts_src/psbt.ts
|
|
@ -425,16 +425,6 @@ export class Psbt extends PsbtBase {
|
|||
}
|
||||
}
|
||||
|
||||
//
|
||||
//
|
||||
//
|
||||
//
|
||||
// Helper functions
|
||||
//
|
||||
//
|
||||
//
|
||||
//
|
||||
|
||||
interface PsbtCache {
|
||||
__NON_WITNESS_UTXO_TX_CACHE: Transaction[];
|
||||
__NON_WITNESS_UTXO_BUF_CACHE: Buffer[];
|
||||
|
|
@ -455,38 +445,139 @@ interface PsbtOpts {
|
|||
maximumFeeRate: number;
|
||||
}
|
||||
|
||||
function addNonWitnessTxCache(
|
||||
cache: PsbtCache,
|
||||
function canFinalize(
|
||||
input: PsbtInput,
|
||||
inputIndex: number,
|
||||
): void {
|
||||
cache.__NON_WITNESS_UTXO_BUF_CACHE[inputIndex] = input.nonWitnessUtxo!;
|
||||
script: Buffer,
|
||||
scriptType: string,
|
||||
): boolean {
|
||||
switch (scriptType) {
|
||||
case 'pubkey':
|
||||
case 'pubkeyhash':
|
||||
case 'witnesspubkeyhash':
|
||||
return hasSigs(1, input.partialSig);
|
||||
case 'multisig':
|
||||
const p2ms = payments.p2ms({ output: script });
|
||||
return hasSigs(p2ms.m!, input.partialSig);
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
const tx = Transaction.fromBuffer(input.nonWitnessUtxo!);
|
||||
cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex] = tx;
|
||||
function hasSigs(neededSigs: number, partialSig?: any[]): boolean {
|
||||
if (!partialSig) return false;
|
||||
if (partialSig.length > neededSigs) throw new Error('Too many signatures');
|
||||
return partialSig.length === neededSigs;
|
||||
}
|
||||
|
||||
const self = cache;
|
||||
const selfIndex = inputIndex;
|
||||
delete input.nonWitnessUtxo;
|
||||
Object.defineProperty(input, 'nonWitnessUtxo', {
|
||||
enumerable: true,
|
||||
get(): Buffer {
|
||||
const buf = self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex];
|
||||
const txCache = self.__NON_WITNESS_UTXO_TX_CACHE[selfIndex];
|
||||
if (buf !== undefined) {
|
||||
return buf;
|
||||
} else {
|
||||
const newBuf = txCache.toBuffer();
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = newBuf;
|
||||
return newBuf;
|
||||
function isFinalized(input: PsbtInput): boolean {
|
||||
return !!input.finalScriptSig || !!input.finalScriptWitness;
|
||||
}
|
||||
|
||||
function isPaymentFactory(payment: any): (script: Buffer) => boolean {
|
||||
return (script: Buffer): boolean => {
|
||||
try {
|
||||
payment({ output: script });
|
||||
return true;
|
||||
} catch (err) {
|
||||
return false;
|
||||
}
|
||||
};
|
||||
}
|
||||
const isP2MS = isPaymentFactory(payments.p2ms);
|
||||
const isP2PK = isPaymentFactory(payments.p2pk);
|
||||
const isP2PKH = isPaymentFactory(payments.p2pkh);
|
||||
const isP2WPKH = isPaymentFactory(payments.p2wpkh);
|
||||
|
||||
function check32Bit(num: number): void {
|
||||
if (
|
||||
typeof num !== 'number' ||
|
||||
num !== Math.floor(num) ||
|
||||
num > 0xffffffff ||
|
||||
num < 0
|
||||
) {
|
||||
throw new Error('Invalid 32 bit integer');
|
||||
}
|
||||
}
|
||||
|
||||
function checkFees(psbt: Psbt, cache: PsbtCache, opts: PsbtOpts): void {
|
||||
const feeRate = cache.__FEE_RATE || psbt.getFeeRate();
|
||||
const vsize = cache.__EXTRACTED_TX!.virtualSize();
|
||||
const satoshis = feeRate * vsize;
|
||||
if (feeRate >= opts.maximumFeeRate) {
|
||||
throw new Error(
|
||||
`Warning: You are paying around ${(satoshis / 1e8).toFixed(8)} in ` +
|
||||
`fees, which is ${feeRate} satoshi per byte for a transaction ` +
|
||||
`with a VSize of ${vsize} bytes (segwit counted as 0.25 byte per ` +
|
||||
`byte). Use setMaximumFeeRate method to raise your threshold, or ` +
|
||||
`pass true to the first arg of extractTransaction.`,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
function checkInputsForPartialSig(inputs: PsbtInput[], action: string): void {
|
||||
inputs.forEach(input => {
|
||||
let throws = false;
|
||||
if ((input.partialSig || []).length === 0) return;
|
||||
input.partialSig!.forEach(pSig => {
|
||||
const { hashType } = bscript.signature.decode(pSig.signature);
|
||||
const whitelist: string[] = [];
|
||||
const isAnyoneCanPay = hashType & Transaction.SIGHASH_ANYONECANPAY;
|
||||
if (isAnyoneCanPay) whitelist.push('addInput');
|
||||
const hashMod = hashType & 0x1f;
|
||||
switch (hashMod) {
|
||||
case Transaction.SIGHASH_ALL:
|
||||
break;
|
||||
case Transaction.SIGHASH_SINGLE:
|
||||
case Transaction.SIGHASH_NONE:
|
||||
whitelist.push('addOutput');
|
||||
whitelist.push('setSequence');
|
||||
break;
|
||||
}
|
||||
},
|
||||
set(data: Buffer): void {
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = data;
|
||||
},
|
||||
if (whitelist.indexOf(action) === -1) {
|
||||
throws = true;
|
||||
}
|
||||
});
|
||||
if (throws) {
|
||||
throw new Error('Can not modify transaction, signatures exist.');
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function checkScriptForPubkey(
|
||||
pubkey: Buffer,
|
||||
script: Buffer,
|
||||
action: string,
|
||||
): void {
|
||||
const pubkeyHash = hash160(pubkey);
|
||||
|
||||
const decompiled = bscript.decompile(script);
|
||||
if (decompiled === null) throw new Error('Unknown script error');
|
||||
|
||||
const hasKey = decompiled.some(element => {
|
||||
if (typeof element === 'number') return false;
|
||||
return element.equals(pubkey) || element.equals(pubkeyHash);
|
||||
});
|
||||
|
||||
if (!hasKey) {
|
||||
throw new Error(
|
||||
`Can not ${action} for this input with the key ${pubkey.toString('hex')}`,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
function checkTxEmpty(tx: Transaction): void {
|
||||
const isEmpty = tx.ins.every(
|
||||
input =>
|
||||
input.script &&
|
||||
input.script.length === 0 &&
|
||||
input.witness &&
|
||||
input.witness.length === 0,
|
||||
);
|
||||
if (!isEmpty) {
|
||||
throw new Error('Format Error: Transaction ScriptSigs are not empty');
|
||||
}
|
||||
}
|
||||
|
||||
function checkTxForDupeIns(tx: Transaction, cache: PsbtCache): void {
|
||||
tx.ins.forEach(input => {
|
||||
checkTxInputCache(cache, input);
|
||||
|
|
@ -503,27 +594,31 @@ function checkTxInputCache(
|
|||
cache.__TX_IN_CACHE[key] = 1;
|
||||
}
|
||||
|
||||
function isFinalized(input: PsbtInput): boolean {
|
||||
return !!input.finalScriptSig || !!input.finalScriptWitness;
|
||||
}
|
||||
function scriptCheckerFactory(
|
||||
payment: any,
|
||||
paymentScriptName: string,
|
||||
): (idx: number, spk: Buffer, rs: Buffer) => void {
|
||||
return (
|
||||
inputIndex: number,
|
||||
scriptPubKey: Buffer,
|
||||
redeemScript: Buffer,
|
||||
): void => {
|
||||
const redeemScriptOutput = payment({
|
||||
redeem: { output: redeemScript },
|
||||
}).output as Buffer;
|
||||
|
||||
function getHashAndSighashType(
|
||||
inputs: PsbtInput[],
|
||||
inputIndex: number,
|
||||
pubkey: Buffer,
|
||||
cache: PsbtCache,
|
||||
): {
|
||||
hash: Buffer;
|
||||
sighashType: number;
|
||||
} {
|
||||
const input = checkForInput(inputs, inputIndex);
|
||||
const { hash, sighashType, script } = getHashForSig(inputIndex, input, cache);
|
||||
checkScriptForPubkey(pubkey, script, 'sign');
|
||||
return {
|
||||
hash,
|
||||
sighashType,
|
||||
if (!scriptPubKey.equals(redeemScriptOutput)) {
|
||||
throw new Error(
|
||||
`${paymentScriptName} for input #${inputIndex} doesn't match the scriptPubKey in the prevout`,
|
||||
);
|
||||
}
|
||||
};
|
||||
}
|
||||
const checkRedeemScript = scriptCheckerFactory(payments.p2sh, 'Redeem script');
|
||||
const checkWitnessScript = scriptCheckerFactory(
|
||||
payments.p2wsh,
|
||||
'Witness script',
|
||||
);
|
||||
|
||||
function getFinalScripts(
|
||||
script: Buffer,
|
||||
|
|
@ -566,112 +661,33 @@ function getFinalScripts(
|
|||
};
|
||||
}
|
||||
|
||||
function getSortedSigs(script: Buffer, partialSig: PartialSig[]): Buffer[] {
|
||||
const p2ms = payments.p2ms({ output: script });
|
||||
// for each pubkey in order of p2ms script
|
||||
return p2ms
|
||||
.pubkeys!.map(pk => {
|
||||
// filter partialSig array by pubkey being equal
|
||||
return (
|
||||
partialSig.filter(ps => {
|
||||
return ps.pubkey.equals(pk);
|
||||
})[0] || {}
|
||||
).signature;
|
||||
// Any pubkey without a match will return undefined
|
||||
// this last filter removes all the undefined items in the array.
|
||||
})
|
||||
.filter(v => !!v);
|
||||
}
|
||||
|
||||
function getPayment(
|
||||
script: Buffer,
|
||||
scriptType: string,
|
||||
partialSig: PartialSig[],
|
||||
): payments.Payment {
|
||||
let payment: payments.Payment;
|
||||
switch (scriptType) {
|
||||
case 'multisig':
|
||||
const sigs = getSortedSigs(script, partialSig);
|
||||
payment = payments.p2ms({
|
||||
output: script,
|
||||
signatures: sigs,
|
||||
});
|
||||
break;
|
||||
case 'pubkey':
|
||||
payment = payments.p2pk({
|
||||
output: script,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'pubkeyhash':
|
||||
payment = payments.p2pkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'witnesspubkeyhash':
|
||||
payment = payments.p2wpkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
}
|
||||
return payment!;
|
||||
}
|
||||
|
||||
function canFinalize(
|
||||
input: PsbtInput,
|
||||
script: Buffer,
|
||||
scriptType: string,
|
||||
): boolean {
|
||||
switch (scriptType) {
|
||||
case 'pubkey':
|
||||
case 'pubkeyhash':
|
||||
case 'witnesspubkeyhash':
|
||||
return hasSigs(1, input.partialSig);
|
||||
case 'multisig':
|
||||
const p2ms = payments.p2ms({ output: script });
|
||||
return hasSigs(p2ms.m!, input.partialSig);
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
function checkScriptForPubkey(
|
||||
function getHashAndSighashType(
|
||||
inputs: PsbtInput[],
|
||||
inputIndex: number,
|
||||
pubkey: Buffer,
|
||||
script: Buffer,
|
||||
action: string,
|
||||
): void {
|
||||
const pubkeyHash = hash160(pubkey);
|
||||
|
||||
const decompiled = bscript.decompile(script);
|
||||
if (decompiled === null) throw new Error('Unknown script error');
|
||||
|
||||
const hasKey = decompiled.some(element => {
|
||||
if (typeof element === 'number') return false;
|
||||
return element.equals(pubkey) || element.equals(pubkeyHash);
|
||||
});
|
||||
|
||||
if (!hasKey) {
|
||||
throw new Error(
|
||||
`Can not ${action} for this input with the key ${pubkey.toString('hex')}`,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
interface HashForSigData {
|
||||
script: Buffer;
|
||||
cache: PsbtCache,
|
||||
): {
|
||||
hash: Buffer;
|
||||
sighashType: number;
|
||||
} {
|
||||
const input = checkForInput(inputs, inputIndex);
|
||||
const { hash, sighashType, script } = getHashForSig(inputIndex, input, cache);
|
||||
checkScriptForPubkey(pubkey, script, 'sign');
|
||||
return {
|
||||
hash,
|
||||
sighashType,
|
||||
};
|
||||
}
|
||||
|
||||
function getHashForSig(
|
||||
inputIndex: number,
|
||||
input: PsbtInput,
|
||||
cache: PsbtCache,
|
||||
): HashForSigData {
|
||||
): {
|
||||
script: Buffer;
|
||||
hash: Buffer;
|
||||
sighashType: number;
|
||||
} {
|
||||
const unsignedTx = cache.__TX;
|
||||
const sighashType = input.sighashType || Transaction.SIGHASH_ALL;
|
||||
let hash: Buffer;
|
||||
|
|
@ -760,231 +776,6 @@ function getHashForSig(
|
|||
};
|
||||
}
|
||||
|
||||
type ScriptCheckerFunction = (idx: number, spk: Buffer, rs: Buffer) => void;
|
||||
|
||||
function scriptCheckerFactory(
|
||||
payment: any,
|
||||
paymentScriptName: string,
|
||||
): ScriptCheckerFunction {
|
||||
return (
|
||||
inputIndex: number,
|
||||
scriptPubKey: Buffer,
|
||||
redeemScript: Buffer,
|
||||
): void => {
|
||||
const redeemScriptOutput = payment({
|
||||
redeem: { output: redeemScript },
|
||||
}).output as Buffer;
|
||||
|
||||
if (!scriptPubKey.equals(redeemScriptOutput)) {
|
||||
throw new Error(
|
||||
`${paymentScriptName} for input #${inputIndex} doesn't match the scriptPubKey in the prevout`,
|
||||
);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
const checkRedeemScript = scriptCheckerFactory(payments.p2sh, 'Redeem script');
|
||||
const checkWitnessScript = scriptCheckerFactory(
|
||||
payments.p2wsh,
|
||||
'Witness script',
|
||||
);
|
||||
|
||||
type isPaymentFunction = (script: Buffer) => boolean;
|
||||
|
||||
function isPaymentFactory(payment: any): isPaymentFunction {
|
||||
return (script: Buffer): boolean => {
|
||||
try {
|
||||
payment({ output: script });
|
||||
return true;
|
||||
} catch (err) {
|
||||
return false;
|
||||
}
|
||||
};
|
||||
}
|
||||
const isP2WPKH = isPaymentFactory(payments.p2wpkh);
|
||||
const isP2PKH = isPaymentFactory(payments.p2pkh);
|
||||
const isP2MS = isPaymentFactory(payments.p2ms);
|
||||
const isP2PK = isPaymentFactory(payments.p2pk);
|
||||
|
||||
function classifyScript(script: Buffer): string {
|
||||
if (isP2WPKH(script)) return 'witnesspubkeyhash';
|
||||
if (isP2PKH(script)) return 'pubkeyhash';
|
||||
if (isP2MS(script)) return 'multisig';
|
||||
if (isP2PK(script)) return 'pubkey';
|
||||
return 'nonstandard';
|
||||
}
|
||||
|
||||
interface GetScriptReturn {
|
||||
script: Buffer | null;
|
||||
isSegwit: boolean;
|
||||
isP2SH: boolean;
|
||||
isP2WSH: boolean;
|
||||
}
|
||||
function getScriptFromInput(
|
||||
inputIndex: number,
|
||||
input: PsbtInput,
|
||||
cache: PsbtCache,
|
||||
): GetScriptReturn {
|
||||
const unsignedTx = cache.__TX;
|
||||
const res: GetScriptReturn = {
|
||||
script: null,
|
||||
isSegwit: false,
|
||||
isP2SH: false,
|
||||
isP2WSH: false,
|
||||
};
|
||||
if (input.nonWitnessUtxo) {
|
||||
if (input.redeemScript) {
|
||||
res.isP2SH = true;
|
||||
res.script = input.redeemScript;
|
||||
} else {
|
||||
const nonWitnessUtxoTx = nonWitnessUtxoTxFromCache(
|
||||
cache,
|
||||
input,
|
||||
inputIndex,
|
||||
);
|
||||
const prevoutIndex = unsignedTx.ins[inputIndex].index;
|
||||
res.script = nonWitnessUtxoTx.outs[prevoutIndex].script;
|
||||
}
|
||||
} else if (input.witnessUtxo) {
|
||||
res.isSegwit = true;
|
||||
res.isP2SH = !!input.redeemScript;
|
||||
res.isP2WSH = !!input.witnessScript;
|
||||
if (input.witnessScript) {
|
||||
res.script = input.witnessScript;
|
||||
} else if (input.redeemScript) {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.redeemScript.slice(2),
|
||||
}).output!;
|
||||
} else {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.witnessUtxo.script.slice(2),
|
||||
}).output!;
|
||||
}
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
function hasSigs(neededSigs: number, partialSig?: any[]): boolean {
|
||||
if (!partialSig) return false;
|
||||
if (partialSig.length > neededSigs) throw new Error('Too many signatures');
|
||||
return partialSig.length === neededSigs;
|
||||
}
|
||||
|
||||
function witnessStackToScriptWitness(witness: Buffer[]): Buffer {
|
||||
let buffer = Buffer.allocUnsafe(0);
|
||||
|
||||
function writeSlice(slice: Buffer): void {
|
||||
buffer = Buffer.concat([buffer, Buffer.from(slice)]);
|
||||
}
|
||||
|
||||
function writeVarInt(i: number): void {
|
||||
const currentLen = buffer.length;
|
||||
const varintLen = varuint.encodingLength(i);
|
||||
|
||||
buffer = Buffer.concat([buffer, Buffer.allocUnsafe(varintLen)]);
|
||||
varuint.encode(i, buffer, currentLen);
|
||||
}
|
||||
|
||||
function writeVarSlice(slice: Buffer): void {
|
||||
writeVarInt(slice.length);
|
||||
writeSlice(slice);
|
||||
}
|
||||
|
||||
function writeVector(vector: Buffer[]): void {
|
||||
writeVarInt(vector.length);
|
||||
vector.forEach(writeVarSlice);
|
||||
}
|
||||
|
||||
writeVector(witness);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
function scriptWitnessToWitnessStack(buffer: Buffer): Buffer[] {
|
||||
let offset = 0;
|
||||
|
||||
function readSlice(n: number): Buffer {
|
||||
offset += n;
|
||||
return buffer.slice(offset - n, offset);
|
||||
}
|
||||
|
||||
function readVarInt(): number {
|
||||
const vi = varuint.decode(buffer, offset);
|
||||
offset += varuint.decode.bytes;
|
||||
return vi;
|
||||
}
|
||||
|
||||
function readVarSlice(): Buffer {
|
||||
return readSlice(readVarInt());
|
||||
}
|
||||
|
||||
function readVector(): Buffer[] {
|
||||
const count = readVarInt();
|
||||
const vector: Buffer[] = [];
|
||||
for (let i = 0; i < count; i++) vector.push(readVarSlice());
|
||||
return vector;
|
||||
}
|
||||
|
||||
return readVector();
|
||||
}
|
||||
|
||||
function range(n: number): number[] {
|
||||
return [...Array(n).keys()];
|
||||
}
|
||||
|
||||
function checkTxEmpty(tx: Transaction): void {
|
||||
const isEmpty = tx.ins.every(
|
||||
input =>
|
||||
input.script &&
|
||||
input.script.length === 0 &&
|
||||
input.witness &&
|
||||
input.witness.length === 0,
|
||||
);
|
||||
if (!isEmpty) {
|
||||
throw new Error('Format Error: Transaction ScriptSigs are not empty');
|
||||
}
|
||||
}
|
||||
|
||||
function checkInputsForPartialSig(inputs: PsbtInput[], action: string): void {
|
||||
inputs.forEach(input => {
|
||||
let throws = false;
|
||||
if ((input.partialSig || []).length === 0) return;
|
||||
input.partialSig!.forEach(pSig => {
|
||||
const { hashType } = bscript.signature.decode(pSig.signature);
|
||||
const whitelist: string[] = [];
|
||||
const isAnyoneCanPay = hashType & Transaction.SIGHASH_ANYONECANPAY;
|
||||
if (isAnyoneCanPay) whitelist.push('addInput');
|
||||
const hashMod = hashType & 0x1f;
|
||||
switch (hashMod) {
|
||||
case Transaction.SIGHASH_ALL:
|
||||
break;
|
||||
case Transaction.SIGHASH_SINGLE:
|
||||
case Transaction.SIGHASH_NONE:
|
||||
whitelist.push('addOutput');
|
||||
whitelist.push('setSequence');
|
||||
break;
|
||||
}
|
||||
if (whitelist.indexOf(action) === -1) {
|
||||
throws = true;
|
||||
}
|
||||
});
|
||||
if (throws) {
|
||||
throw new Error('Can not modify transaction, signatures exist.');
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function nonWitnessUtxoTxFromCache(
|
||||
cache: PsbtCache,
|
||||
input: PsbtInput,
|
||||
inputIndex: number,
|
||||
): Transaction {
|
||||
if (!cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex]) {
|
||||
addNonWitnessTxCache(cache, input, inputIndex);
|
||||
}
|
||||
return cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex];
|
||||
}
|
||||
|
||||
function getInputAdder(
|
||||
cache: PsbtCache,
|
||||
): (_inputData: TransactionInput, txBuf: Buffer) => Buffer {
|
||||
|
|
@ -1040,19 +831,199 @@ function getOutputAdder(
|
|||
};
|
||||
}
|
||||
|
||||
function checkFees(psbt: Psbt, cache: PsbtCache, opts: PsbtOpts): void {
|
||||
const feeRate = cache.__FEE_RATE || psbt.getFeeRate();
|
||||
const vsize = cache.__EXTRACTED_TX!.virtualSize();
|
||||
const satoshis = feeRate * vsize;
|
||||
if (feeRate >= opts.maximumFeeRate) {
|
||||
throw new Error(
|
||||
`Warning: You are paying around ${(satoshis / 1e8).toFixed(8)} in ` +
|
||||
`fees, which is ${feeRate} satoshi per byte for a transaction ` +
|
||||
`with a VSize of ${vsize} bytes (segwit counted as 0.25 byte per ` +
|
||||
`byte). Use setMaximumFeeRate method to raise your threshold, or ` +
|
||||
`pass true to the first arg of extractTransaction.`,
|
||||
);
|
||||
function getPayment(
|
||||
script: Buffer,
|
||||
scriptType: string,
|
||||
partialSig: PartialSig[],
|
||||
): payments.Payment {
|
||||
let payment: payments.Payment;
|
||||
switch (scriptType) {
|
||||
case 'multisig':
|
||||
const sigs = getSortedSigs(script, partialSig);
|
||||
payment = payments.p2ms({
|
||||
output: script,
|
||||
signatures: sigs,
|
||||
});
|
||||
break;
|
||||
case 'pubkey':
|
||||
payment = payments.p2pk({
|
||||
output: script,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'pubkeyhash':
|
||||
payment = payments.p2pkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
case 'witnesspubkeyhash':
|
||||
payment = payments.p2wpkh({
|
||||
output: script,
|
||||
pubkey: partialSig[0].pubkey,
|
||||
signature: partialSig[0].signature,
|
||||
});
|
||||
break;
|
||||
}
|
||||
return payment!;
|
||||
}
|
||||
|
||||
interface GetScriptReturn {
|
||||
script: Buffer | null;
|
||||
isSegwit: boolean;
|
||||
isP2SH: boolean;
|
||||
isP2WSH: boolean;
|
||||
}
|
||||
function getScriptFromInput(
|
||||
inputIndex: number,
|
||||
input: PsbtInput,
|
||||
cache: PsbtCache,
|
||||
): GetScriptReturn {
|
||||
const unsignedTx = cache.__TX;
|
||||
const res: GetScriptReturn = {
|
||||
script: null,
|
||||
isSegwit: false,
|
||||
isP2SH: false,
|
||||
isP2WSH: false,
|
||||
};
|
||||
if (input.nonWitnessUtxo) {
|
||||
if (input.redeemScript) {
|
||||
res.isP2SH = true;
|
||||
res.script = input.redeemScript;
|
||||
} else {
|
||||
const nonWitnessUtxoTx = nonWitnessUtxoTxFromCache(
|
||||
cache,
|
||||
input,
|
||||
inputIndex,
|
||||
);
|
||||
const prevoutIndex = unsignedTx.ins[inputIndex].index;
|
||||
res.script = nonWitnessUtxoTx.outs[prevoutIndex].script;
|
||||
}
|
||||
} else if (input.witnessUtxo) {
|
||||
res.isSegwit = true;
|
||||
res.isP2SH = !!input.redeemScript;
|
||||
res.isP2WSH = !!input.witnessScript;
|
||||
if (input.witnessScript) {
|
||||
res.script = input.witnessScript;
|
||||
} else if (input.redeemScript) {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.redeemScript.slice(2),
|
||||
}).output!;
|
||||
} else {
|
||||
res.script = payments.p2wpkh({
|
||||
hash: input.witnessUtxo.script.slice(2),
|
||||
}).output!;
|
||||
}
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
function getSortedSigs(script: Buffer, partialSig: PartialSig[]): Buffer[] {
|
||||
const p2ms = payments.p2ms({ output: script });
|
||||
// for each pubkey in order of p2ms script
|
||||
return p2ms
|
||||
.pubkeys!.map(pk => {
|
||||
// filter partialSig array by pubkey being equal
|
||||
return (
|
||||
partialSig.filter(ps => {
|
||||
return ps.pubkey.equals(pk);
|
||||
})[0] || {}
|
||||
).signature;
|
||||
// Any pubkey without a match will return undefined
|
||||
// this last filter removes all the undefined items in the array.
|
||||
})
|
||||
.filter(v => !!v);
|
||||
}
|
||||
|
||||
function scriptWitnessToWitnessStack(buffer: Buffer): Buffer[] {
|
||||
let offset = 0;
|
||||
|
||||
function readSlice(n: number): Buffer {
|
||||
offset += n;
|
||||
return buffer.slice(offset - n, offset);
|
||||
}
|
||||
|
||||
function readVarInt(): number {
|
||||
const vi = varuint.decode(buffer, offset);
|
||||
offset += varuint.decode.bytes;
|
||||
return vi;
|
||||
}
|
||||
|
||||
function readVarSlice(): Buffer {
|
||||
return readSlice(readVarInt());
|
||||
}
|
||||
|
||||
function readVector(): Buffer[] {
|
||||
const count = readVarInt();
|
||||
const vector: Buffer[] = [];
|
||||
for (let i = 0; i < count; i++) vector.push(readVarSlice());
|
||||
return vector;
|
||||
}
|
||||
|
||||
return readVector();
|
||||
}
|
||||
|
||||
function witnessStackToScriptWitness(witness: Buffer[]): Buffer {
|
||||
let buffer = Buffer.allocUnsafe(0);
|
||||
|
||||
function writeSlice(slice: Buffer): void {
|
||||
buffer = Buffer.concat([buffer, Buffer.from(slice)]);
|
||||
}
|
||||
|
||||
function writeVarInt(i: number): void {
|
||||
const currentLen = buffer.length;
|
||||
const varintLen = varuint.encodingLength(i);
|
||||
|
||||
buffer = Buffer.concat([buffer, Buffer.allocUnsafe(varintLen)]);
|
||||
varuint.encode(i, buffer, currentLen);
|
||||
}
|
||||
|
||||
function writeVarSlice(slice: Buffer): void {
|
||||
writeVarInt(slice.length);
|
||||
writeSlice(slice);
|
||||
}
|
||||
|
||||
function writeVector(vector: Buffer[]): void {
|
||||
writeVarInt(vector.length);
|
||||
vector.forEach(writeVarSlice);
|
||||
}
|
||||
|
||||
writeVector(witness);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
function addNonWitnessTxCache(
|
||||
cache: PsbtCache,
|
||||
input: PsbtInput,
|
||||
inputIndex: number,
|
||||
): void {
|
||||
cache.__NON_WITNESS_UTXO_BUF_CACHE[inputIndex] = input.nonWitnessUtxo!;
|
||||
|
||||
const tx = Transaction.fromBuffer(input.nonWitnessUtxo!);
|
||||
cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex] = tx;
|
||||
|
||||
const self = cache;
|
||||
const selfIndex = inputIndex;
|
||||
delete input.nonWitnessUtxo;
|
||||
Object.defineProperty(input, 'nonWitnessUtxo', {
|
||||
enumerable: true,
|
||||
get(): Buffer {
|
||||
const buf = self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex];
|
||||
const txCache = self.__NON_WITNESS_UTXO_TX_CACHE[selfIndex];
|
||||
if (buf !== undefined) {
|
||||
return buf;
|
||||
} else {
|
||||
const newBuf = txCache.toBuffer();
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = newBuf;
|
||||
return newBuf;
|
||||
}
|
||||
},
|
||||
set(data: Buffer): void {
|
||||
self.__NON_WITNESS_UTXO_BUF_CACHE[selfIndex] = data;
|
||||
},
|
||||
});
|
||||
}
|
||||
|
||||
function inputFinalizeGetAmts(
|
||||
|
|
@ -1083,13 +1054,25 @@ function inputFinalizeGetAmts(
|
|||
return inputAmount;
|
||||
}
|
||||
|
||||
function check32Bit(num: number): void {
|
||||
if (
|
||||
typeof num !== 'number' ||
|
||||
num !== Math.floor(num) ||
|
||||
num > 0xffffffff ||
|
||||
num < 0
|
||||
) {
|
||||
throw new Error('Invalid 32 bit integer');
|
||||
function nonWitnessUtxoTxFromCache(
|
||||
cache: PsbtCache,
|
||||
input: PsbtInput,
|
||||
inputIndex: number,
|
||||
): Transaction {
|
||||
if (!cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex]) {
|
||||
addNonWitnessTxCache(cache, input, inputIndex);
|
||||
}
|
||||
return cache.__NON_WITNESS_UTXO_TX_CACHE[inputIndex];
|
||||
}
|
||||
|
||||
function classifyScript(script: Buffer): string {
|
||||
if (isP2WPKH(script)) return 'witnesspubkeyhash';
|
||||
if (isP2PKH(script)) return 'pubkeyhash';
|
||||
if (isP2MS(script)) return 'multisig';
|
||||
if (isP2PK(script)) return 'pubkey';
|
||||
return 'nonstandard';
|
||||
}
|
||||
|
||||
function range(n: number): number[] {
|
||||
return [...Array(n).keys()];
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue