mirror of https://github.com/lukechilds/Agama.git
pbca26
7 years ago
13 changed files with 260 additions and 98 deletions
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/* |
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MIT License |
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Copyright (c) 2017 Yuki Akiyama, SuperNET |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in all |
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copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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SOFTWARE. |
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*/ |
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var bitcoin = require('bitcoinjs-lib-zcash'); |
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var decodeFormat = function(tx) { |
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var result = { |
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txid: tx.getId(), |
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version: tx.version, |
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locktime: tx.locktime, |
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}; |
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return result; |
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} |
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var decodeInput = function(tx) { |
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var result = []; |
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tx.ins.forEach(function(input, n) { |
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var vin = { |
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txid: input.hash.reverse().toString('hex'), |
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n: input.index, |
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script: bitcoin.script.toASM(input.script), |
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sequence: input.sequence, |
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}; |
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result.push(vin); |
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}); |
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return result; |
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} |
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var decodeOutput = function(tx, network) { |
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var format = function(out, n, network) { |
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var vout = { |
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satoshi: out.value, |
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value: (1e-8 * out.value).toFixed(8), |
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n: n, |
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scriptPubKey: { |
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asm: bitcoin.script.toASM(out.script), |
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hex: out.script.toString('hex'), |
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type: bitcoin.script.classifyOutput(out.script), |
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addresses: [], |
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}, |
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}; |
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switch(vout.scriptPubKey.type) { |
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case 'pubkeyhash': |
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vout.scriptPubKey.addresses.push(bitcoin.address.fromOutputScript(out.script, network)); |
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break; |
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case 'pubkey': |
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const pubKeyBuffer = new Buffer(vout.scriptPubKey.asm.split(' ')[0], 'hex'); |
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vout.scriptPubKey.addresses.push(bitcoin.ECPair.fromPublicKeyBuffer(pubKeyBuffer, network).getAddress()); |
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break; |
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case 'scripthash': |
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vout.scriptPubKey.addresses.push(bitcoin.address.fromOutputScript(out.script, network)); |
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break; |
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} |
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return vout; |
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} |
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var result = []; |
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tx.outs.forEach(function(out, n) { |
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result.push(format(out, n, network)); |
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}); |
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return result; |
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} |
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var TxDecoder = module.exports = function(rawtx, network) { |
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try { |
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const _tx = bitcoin.Transaction.fromHex(rawtx); |
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return { |
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tx: _tx, |
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network: network, |
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format: decodeFormat(_tx), |
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inputs: decodeInput(_tx), |
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outputs: decodeOutput(_tx, network), |
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}; |
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} catch (e) { |
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return false; |
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} |
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} |
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TxDecoder.prototype.decode = function() { |
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var result = {}; |
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var self = this; |
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Object.keys(self.format).forEach(function(key) { |
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result[key] = self.format[key]; |
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}); |
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result.outputs = self.outputs; |
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return result; |
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} |
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