TxBuilder: fix failing test for non-standard/multisig inputs
Instead of failing in `fromTransaction`, TxBuilder will now only fail in `sign` if you attempt to sign a non-standard input. Transactions with non-standard inputs can only be built with buildIncomplete() (for now).
This commit is contained in:
Daniel Cousens
parent
b048627a59
commit
4c9fd6010e
3 changed files with 196 additions and 112 deletions
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@ -13,31 +13,39 @@ function isCoinbase(txHash) {
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})
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}
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function extractSignature(txIn) {
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function extractInput(txIn) {
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var redeemScript
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var scriptSig = txIn.script
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var scriptType = scripts.classifyInput(scriptSig, true)
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var prevOutScript
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var prevOutType = scripts.classifyInput(scriptSig, true)
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var scriptType
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// Re-classify if P2SH
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if (scriptType === 'scripthash') {
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if (prevOutType === 'scripthash') {
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redeemScript = Script.fromBuffer(scriptSig.chunks.slice(-1)[0])
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scriptSig = Script.fromChunks(scriptSig.chunks.slice(0, -1))
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prevOutScript = scripts.scriptHashOutput(redeemScript.getHash())
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scriptSig = Script.fromChunks(scriptSig.chunks.slice(0, -1))
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scriptType = scripts.classifyInput(scriptSig, true)
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assert.equal(scripts.classifyOutput(redeemScript), scriptType, 'Non-matching scriptSig and scriptPubKey in input')
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} else {
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scriptType = prevOutType
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}
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// Extract hashType, pubKeys and signatures
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var hashType, parsed, pubKeys, signatures
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var hashType, initialized, parsed, pubKeys, signatures
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switch (scriptType) {
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case 'pubkeyhash':
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parsed = ECSignature.parseScriptSignature(scriptSig.chunks[0])
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hashType = parsed.hashType
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pubKeys = [ECPubKey.fromBuffer(scriptSig.chunks[1])]
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signatures = [parsed.signature]
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initialized = true
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prevOutScript = pubKeys[0].getAddress().toOutputScript()
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break
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case 'multisig':
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@ -46,8 +54,8 @@ function extractSignature(txIn) {
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}).map(ECSignature.parseScriptSignature)
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hashType = parsed[0].hashType
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pubKeys = []
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signatures = parsed.map(function(p) { return p.signature })
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initialized = true
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if (redeemScript) {
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pubKeys = redeemScript.chunks.slice(1, -2).map(ECPubKey.fromBuffer)
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@ -57,11 +65,11 @@ function extractSignature(txIn) {
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case 'pubkey':
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parsed = ECSignature.parseScriptSignature(scriptSig.chunks[0])
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hashType = parsed.hashType
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pubKeys = []
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signatures = [parsed.signature]
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initialized = true
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if (redeemScript) {
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pubKeys = [ECPubKey.fromBuffer(redeemScript.chunks[0])]
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}
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@ -69,11 +77,18 @@ function extractSignature(txIn) {
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break
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default:
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assert(false, scriptType + ' inputs not supported')
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if (redeemScript) {
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initialized = true
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}
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break
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}
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return {
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hashType: hashType,
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initialized: initialized,
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prevOutScript: prevOutScript,
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prevOutType: prevOutType,
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pubKeys: pubKeys,
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redeemScript: redeemScript,
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scriptType: scriptType,
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@ -86,7 +101,7 @@ function TransactionBuilder() {
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this.prevOutScripts = {}
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this.prevOutTypes = {}
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this.signatures = []
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this.inputs = []
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this.tx = new Transaction()
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}
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@ -108,14 +123,16 @@ TransactionBuilder.fromTransaction = function(transaction) {
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})
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// Extract/add signatures
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txb.signatures = transaction.ins.map(function(txIn) {
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// TODO: remove me after testcase added
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assert(!isCoinbase(txIn.hash), 'coinbase inputs not supported')
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txb.inputs = transaction.ins.map(function(txIn) {
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// Coinbase inputs not supported
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assert(!Array.prototype.every.call(txIn.hash, function(x) {
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return x === 0
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}), 'coinbase inputs not supported')
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// Ignore empty scripts
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if (txIn.script.buffer.length === 0) return
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return extractSignature(txIn)
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return extractInput(txIn)
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})
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return txb
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@ -139,31 +156,51 @@ TransactionBuilder.prototype.addInput = function(prevTx, index, sequence, prevOu
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}
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var prevOutType
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if (prevOutScript !== undefined) {
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prevOutType = scripts.classifyOutput(prevOutScript)
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var input = {}
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if (prevOutScript) {
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var prevOutType = scripts.classifyOutput(prevOutScript)
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assert.notEqual(prevOutType, 'nonstandard', 'PrevOutScript not supported (nonstandard)')
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// if we can, extract pubKey information
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switch (prevOutType) {
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case 'multisig':
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input.pubKeys = prevOutScript.chunks.slice(1, -2).map(ECPubKey.fromBuffer)
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break
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case 'pubkey':
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input.pubKeys = prevOutScript.chunks.slice(0, 1).map(ECPubKey.fromBuffer)
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break
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}
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assert(this.signatures.every(function(input) {
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return input.hashType & Transaction.SIGHASH_ANYONECANPAY
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if (prevOutType !== 'scripthash') {
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input.scriptType = prevOutType
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}
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input.prevOutScript = prevOutScript
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input.prevOutType = prevOutType
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}
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assert(this.inputs.every(function(input2) {
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if (input2.hashType === undefined) return true
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return input2.hashType & Transaction.SIGHASH_ANYONECANPAY
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}), 'No, this would invalidate signatures')
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var prevOut = prevOutHash.toString('hex') + ':' + index
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assert(!(prevOut in this.prevTxMap), 'Transaction is already an input')
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var vout = this.tx.addInput(prevOutHash, index, sequence)
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this.prevTxMap[prevOut] = true
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this.prevOutScripts[vout] = prevOutScript
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this.prevOutTypes[vout] = prevOutType
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this.inputs[vout] = input
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return vout
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}
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TransactionBuilder.prototype.addOutput = function(scriptPubKey, value) {
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assert(this.signatures.every(function(signature) {
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return (signature.hashType & 0x1f) === Transaction.SIGHASH_SINGLE
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assert(this.inputs.every(function(input) {
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if (input.hashType === undefined) return true
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return (input.hashType & 0x1f) === Transaction.SIGHASH_SINGLE
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}), 'No, this would invalidate signatures')
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return this.tx.addOutput(scriptPubKey, value)
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@ -175,41 +212,50 @@ TransactionBuilder.prototype.__build = function(allowIncomplete) {
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if (!allowIncomplete) {
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assert(this.tx.ins.length > 0, 'Transaction has no inputs')
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assert(this.tx.outs.length > 0, 'Transaction has no outputs')
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assert(this.signatures.length > 0, 'Transaction has no signatures')
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assert.equal(this.signatures.length, this.tx.ins.length, 'Transaction is missing signatures')
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}
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var tx = this.tx.clone()
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// Create script signatures from signature meta-data
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this.signatures.forEach(function(input, index) {
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this.inputs.forEach(function(input, index) {
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if (!allowIncomplete) {
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assert(input.initialized, 'Transaction is not complete')
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}
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var scriptSig
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var scriptType = input.scriptType
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var signatures = input.signatures.map(function(signature) {
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return signature.toScriptSignature(input.hashType)
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})
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switch (scriptType) {
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switch (input.scriptType) {
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case 'pubkeyhash':
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var pubKey = input.pubKeys[0]
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scriptSig = scripts.pubKeyHashInput(signatures[0], pubKey)
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assert(input.signatures, 'Transaction is missing signatures')
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assert.equal(input.signatures.length, 1, 'Transaction is missing signatures')
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var pkhSignature = input.signatures[0].toScriptSignature(input.hashType)
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scriptSig = scripts.pubKeyHashInput(pkhSignature, input.pubKeys[0])
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break
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case 'multisig':
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assert(input.signatures, 'Transaction is missing signatures')
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var signatures = input.signatures.map(function(signature) {
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return signature.toScriptSignature(input.hashType)
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}).filter(function(signature) { return !!signature })
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var redeemScript = allowIncomplete ? undefined : input.redeemScript
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scriptSig = scripts.multisigInput(signatures, redeemScript)
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break
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case 'pubkey':
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scriptSig = scripts.pubKeyInput(signatures[0])
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assert(input.signatures, 'Transaction is missing signatures')
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assert.equal(input.signatures.length, 1, 'Transaction is missing signatures')
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var pkSignature = input.signatures[0].toScriptSignature(input.hashType)
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scriptSig = scripts.pubKeyInput(pkSignature)
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break
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default:
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assert(false, scriptType + ' not supported')
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if (allowIncomplete) return
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assert(false, input.scriptType + ' not supported')
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}
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if (input.redeemScript) {
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@ -223,73 +269,116 @@ TransactionBuilder.prototype.__build = function(allowIncomplete) {
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}
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TransactionBuilder.prototype.sign = function(index, privKey, redeemScript, hashType) {
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assert(this.tx.ins.length >= index, 'No input at index: ' + index)
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assert(index in this.inputs, 'No input at index: ' + index)
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hashType = hashType || Transaction.SIGHASH_ALL
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var prevOutScript = this.prevOutScripts[index]
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var prevOutType = this.prevOutTypes[index]
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var input = this.inputs[index]
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var scriptType, hash
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if (redeemScript) {
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prevOutScript = prevOutScript || scripts.scriptHashOutput(redeemScript.getHash())
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prevOutType = prevOutType || 'scripthash'
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assert.equal(prevOutType, 'scripthash', 'PrevOutScript must be P2SH')
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scriptType = scripts.classifyOutput(redeemScript)
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assert.notEqual(scriptType, 'scripthash', 'RedeemScript can\'t be P2SH')
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assert.notEqual(scriptType, 'nulldata', 'RedeemScript not supported (nulldata)')
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assert.notEqual(scriptType, 'nonstandard', 'RedeemScript not supported (nonstandard)')
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hash = this.tx.hashForSignature(index, redeemScript, hashType)
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} else {
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prevOutScript = prevOutScript || privKey.pub.getAddress().toOutputScript()
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prevOutType = prevOutType || 'pubkeyhash'
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assert.notEqual(prevOutType, 'scripthash', 'PrevOutScript is P2SH, missing redeemScript')
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scriptType = prevOutType
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hash = this.tx.hashForSignature(index, prevOutScript, hashType)
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}
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var input = this.signatures[index]
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if (!input) {
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var pubKeys = []
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if (redeemScript && scriptType === 'multisig') {
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pubKeys = redeemScript.chunks.slice(1, -2).map(ECPubKey.fromBuffer)
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} else {
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pubKeys.push(privKey.pub)
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}
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input = {
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hashType: hashType,
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pubKeys: pubKeys,
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redeemScript: redeemScript,
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scriptType: scriptType,
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signatures: []
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}
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this.signatures[index] = input
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this.prevOutScripts[index] = prevOutScript
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this.prevOutTypes[index] = prevOutType
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} else {
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assert.equal(scriptType, 'multisig', scriptType + ' doesn\'t support multiple signatures')
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if (input.hashType !== undefined) {
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assert.equal(input.hashType, hashType, 'Inconsistent hashType')
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}
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// are we already initialized?
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if (input.initialized) {
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if (input.prevOutType === 'scripthash') {
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assert(input.redeemScript, 'PrevOutScript is P2SH, missing redeemScript')
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} else {
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assert(!input.redeemScript, 'PrevOutScript must be P2SH')
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}
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// redeemScript only needed to initialize, but if provided again, enforce consistency
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if (redeemScript) {
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assert.deepEqual(input.redeemScript, redeemScript, 'Inconsistent redeemScript')
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}
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// if signatures already exist, enforce multisig scriptType
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if (input.signatures.length > 0) {
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assert.equal(input.scriptType, 'multisig', input.scriptType + ' doesn\'t support multiple signatures')
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}
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// initialize it
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} else {
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if (redeemScript) {
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if (input.prevOutScript) {
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assert.equal(input.prevOutType, 'scripthash', 'PrevOutScript must be P2SH')
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var scriptHash = input.prevOutScript.chunks[1]
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assert.deepEqual(scriptHash, redeemScript.getHash(), 'RedeemScript does not match ' + scriptHash.toString('hex'))
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} else {
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input.prevOutScript = scripts.scriptHashOutput(redeemScript.getHash())
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input.prevOutType = 'scripthash'
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}
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var scriptType = scripts.classifyOutput(redeemScript)
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switch (scriptType) {
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case 'multisig':
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input.pubKeys = redeemScript.chunks.slice(1, -2).map(ECPubKey.fromBuffer)
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break
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case 'pubkeyhash':
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var pkh1 = redeemScript.chunks[2]
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var pkh2 = privKey.pub.getAddress().hash
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assert.deepEqual(pkh1, pkh2, 'privateKey cannot sign for this input')
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input.pubKeys = [privKey.pub]
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break
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case 'pubkey':
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input.pubKeys = redeemScript.chunks.slice(0, 1).map(ECPubKey.fromBuffer)
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break
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default:
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assert(false, 'RedeemScript not supported (' + scriptType + ')')
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}
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input.redeemScript = redeemScript
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input.scriptType = scriptType
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} else {
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assert.notEqual(input.prevOutType, 'scripthash', 'PrevOutScript is P2SH, missing redeemScript')
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if (!input.scriptType) {
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input.prevOutScript = privKey.pub.getAddress().toOutputScript()
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input.prevOutType = 'pubkeyhash'
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input.pubKeys = [privKey.pub]
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input.scriptType = input.prevOutType
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}
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}
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input.hashType = hashType
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input.initialized = true
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input.signatures = input.signatures || []
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}
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switch (input.scriptType) {
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case 'pubkeyhash':
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case 'multisig':
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case 'pubkey':
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break
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default:
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assert(false, input.scriptType + ' not supported')
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}
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var signatureHash
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if (input.redeemScript) {
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signatureHash = this.tx.hashForSignature(index, input.redeemScript, hashType)
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} else {
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signatureHash = this.tx.hashForSignature(index, input.prevOutScript, hashType)
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}
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var signature = privKey.sign(signatureHash)
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// enforce signing in order of public keys
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assert(input.pubKeys.some(function(pubKey, i) {
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if (!privKey.pub.Q.equals(pubKey.Q)) return false // FIXME: could be better?
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if (!privKey.pub.Q.equals(pubKey.Q)) return false
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assert(!input.signatures[i], 'Signature already exists')
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input.signatures[i] = privKey.sign(hash)
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input.signatures[i] = signature
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return true
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}), 'privateKey cannot sign for this input')
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18
test/fixtures/transaction_builder.json
vendored
18
test/fixtures/transaction_builder.json
vendored
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@ -150,7 +150,8 @@
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"outputs": []
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},
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{
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"exception": "Transaction has no signatures",
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"description": "Incomplete transaction, nothing assumed",
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"exception": "Transaction is not complete",
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"inputs": [
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{
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"index": 0,
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@ -166,7 +167,8 @@
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]
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},
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{
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"exception": "Transaction is missing signatures",
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"description": "Incomplete transaction w/ prevTxScript defined",
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"exception": "Transaction is not complete",
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"inputs": [
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{
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"index": 0,
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@ -178,6 +180,7 @@
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{
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"index": 1,
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"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
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"prevTxScript": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
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"privKeys": []
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}
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],
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@ -251,7 +254,7 @@
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]
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},
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{
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"exception": "RedeemScript can\\'t be P2SH",
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"exception": "RedeemScript not supported \\(scripthash\\)",
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"inputs": [
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{
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"index": 1,
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@ -313,13 +316,14 @@
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]
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},
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{
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"description": "Wrong private key for multisig redeemScript",
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"exception": "privateKey cannot sign for this input",
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"inputs": [
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{
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"index": 1,
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"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
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"privKeys": [
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"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx"
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"KzrA86mCVMGWnLGBQu9yzQa32qbxb5dvSK4XhyjjGAWSBKYX4rHx"
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],
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"redeemScript": "OP_1 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 OP_1 OP_CHECKMULTISIG",
|
||||
"throws": 0
|
||||
|
|
@ -356,11 +360,7 @@
|
|||
"fromTransaction": [
|
||||
{
|
||||
"exception": "coinbase inputs not supported",
|
||||
"hex": "01000000010000000000000000000000000000000000000000000000000000000000000000000000006b483045022100a3b254e1c10b5d039f36c05f323995d6e5a367d98dd78a13d5bbc3991b35720e022022fccea3897d594de0689601fbd486588d5bfa6915be2386db0397ee9a6e80b601210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798ffffffff0110270000000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac00000000"
|
||||
},
|
||||
{
|
||||
"exception": "nonstandard inputs not supported",
|
||||
"hex": "0100000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0000000023aa206fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d619000000000087ffffffff0110270000000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac00000000"
|
||||
"txHex": "01000000010000000000000000000000000000000000000000000000000000000000000000000000006b483045022100a3b254e1c10b5d039f36c05f323995d6e5a367d98dd78a13d5bbc3991b35720e022022fccea3897d594de0689601fbd486588d5bfa6915be2386db0397ee9a6e80b601210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798ffffffff0110270000000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac00000000"
|
||||
}
|
||||
]
|
||||
}
|
||||
|
|
|
|||
|
|
@ -37,7 +37,7 @@ describe('TransactionBuilder', function() {
|
|||
assert.equal(txin.hash, prevTxHash)
|
||||
assert.equal(txin.index, 1)
|
||||
assert.equal(txin.sequence, 54)
|
||||
assert.equal(txb.prevOutScripts[0], undefined)
|
||||
assert.equal(txb.inputs[0].prevOutScript, undefined)
|
||||
})
|
||||
|
||||
it('accepts a txHash, index [, sequence number and scriptPubKey]', function() {
|
||||
|
|
@ -48,7 +48,7 @@ describe('TransactionBuilder', function() {
|
|||
assert.equal(txin.hash, prevTxHash)
|
||||
assert.equal(txin.index, 1)
|
||||
assert.equal(txin.sequence, 54)
|
||||
assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script)
|
||||
assert.equal(txb.inputs[0].prevOutScript, prevTx.outs[1].script)
|
||||
})
|
||||
|
||||
it('accepts a prevTx, index [and sequence number]', function() {
|
||||
|
|
@ -59,7 +59,7 @@ describe('TransactionBuilder', function() {
|
|||
assert.deepEqual(txin.hash, prevTxHash)
|
||||
assert.equal(txin.index, 1)
|
||||
assert.equal(txin.sequence, 54)
|
||||
assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script)
|
||||
assert.equal(txb.inputs[0].prevOutScript, prevTx.outs[1].script)
|
||||
})
|
||||
|
||||
it('returns the input index', function() {
|
||||
|
|
@ -67,12 +67,6 @@ describe('TransactionBuilder', function() {
|
|||
assert.equal(txb.addInput(prevTxHash, 1), 1)
|
||||
})
|
||||
|
||||
it('throws if prevOutScript is not supported', function() {
|
||||
assert.throws(function() {
|
||||
txb.addInput(prevTxHash, 0, undefined, Script.EMPTY)
|
||||
}, /PrevOutScript not supported \(nonstandard\)/)
|
||||
})
|
||||
|
||||
it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function() {
|
||||
txb.addInput(prevTxHash, 0)
|
||||
txb.sign(0, privKey)
|
||||
|
|
@ -101,8 +95,8 @@ describe('TransactionBuilder', function() {
|
|||
txb.addInput(prevTxHash, 0)
|
||||
txb.sign(0, privKey)
|
||||
|
||||
assert.strictEqual(txb.signatures[0].redeemScript, undefined)
|
||||
assert.equal(txb.signatures[0].scriptType, 'pubkeyhash')
|
||||
assert.equal(txb.inputs[0].scriptType, 'pubkeyhash')
|
||||
assert.equal(txb.inputs[0].redeemScript, undefined)
|
||||
})
|
||||
})
|
||||
|
||||
|
|
@ -111,7 +105,8 @@ describe('TransactionBuilder', function() {
|
|||
txb.addInput(prevTxHash, 0)
|
||||
txb.sign(0, privKey, privScript)
|
||||
|
||||
assert.equal(txb.signatures[0].redeemScript, privScript)
|
||||
assert.equal(txb.inputs[0].prevOutType, 'scripthash')
|
||||
assert.equal(txb.inputs[0].redeemScript, privScript)
|
||||
})
|
||||
|
||||
it('throws if hashType is inconsistent', function() {
|
||||
|
|
@ -139,7 +134,7 @@ describe('TransactionBuilder', function() {
|
|||
})
|
||||
|
||||
fixtures.invalid.sign.forEach(function(f) {
|
||||
it('throws on ' + f.exception, function() {
|
||||
it('throws on ' + f.exception + ' (' + f.description + ')', function() {
|
||||
f.inputs.forEach(function(input) {
|
||||
var prevTxScript
|
||||
|
||||
|
|
@ -218,13 +213,12 @@ describe('TransactionBuilder', function() {
|
|||
if (f.locktime !== undefined) txb.tx.locktime = f.locktime
|
||||
|
||||
var tx = txb.build()
|
||||
|
||||
assert.equal(tx.toHex(), f.txhex)
|
||||
})
|
||||
})
|
||||
|
||||
fixtures.invalid.build.forEach(function(f) {
|
||||
it('throws on ' + f.exception, function() {
|
||||
it('throws on ' + f.exception + ' (' + f.description + ')', function() {
|
||||
f.inputs.forEach(function(input) {
|
||||
var prevTxScript
|
||||
|
||||
|
|
@ -274,7 +268,7 @@ describe('TransactionBuilder', function() {
|
|||
|
||||
fixtures.invalid.fromTransaction.forEach(function(f) {
|
||||
it('throws on ' + f.exception, function() {
|
||||
var tx = Transaction.fromHex(f.hex)
|
||||
var tx = Transaction.fromHex(f.txHex)
|
||||
|
||||
assert.throws(function() {
|
||||
TransactionBuilder.fromTransaction(tx)
|
||||
|
|
@ -282,6 +276,7 @@ describe('TransactionBuilder', function() {
|
|||
})
|
||||
})
|
||||
|
||||
// TODO: test for reverse order signing
|
||||
it('works for the P2SH multisig case', function() {
|
||||
var privKeys = [
|
||||
"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx",
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue