Update floBlockchainAPI.js
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sairajzero
parent
b88a713c80
commit
4078d24487
@ -1,4 +1,4 @@
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(function (EXPORTS) { //floBlockchainAPI v2.4.0
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(function (EXPORTS) { //floBlockchainAPI v2.4.3
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/* FLO Blockchain Operator to send/receive data from blockchain using API calls*/
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'use strict';
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const floBlockchainAPI = EXPORTS;
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@ -15,6 +15,13 @@
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receiverID: floGlobals.adminID
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};
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const SATOSHI_IN_BTC = 1e8;
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const util = floBlockchainAPI.util = {};
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util.Sat_to_FLO = value => parseFloat((value / SATOSHI_IN_BTC).toFixed(8));
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util.FLO_to_Sat = value => parseInt(value * SATOSHI_IN_BTC);
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Object.defineProperties(floBlockchainAPI, {
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sendAmt: {
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get: () => DEFAULT.sendAmt,
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@ -121,8 +128,8 @@
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});
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}
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//Send Tx to blockchain
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const sendTx = floBlockchainAPI.sendTx = function (senderAddr, receiverAddr, sendAmt, privKey, floData = '', strict_utxo = true) {
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//create a transaction with single sender
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const createTx = function (senderAddr, receiverAddr, sendAmt, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateASCII(floData))
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return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
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@ -130,8 +137,6 @@
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return reject(`Invalid address : ${senderAddr}`);
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else if (!floCrypto.validateFloID(receiverAddr))
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return reject(`Invalid address : ${receiverAddr}`);
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else if (privKey.length < 1 || !floCrypto.verifyPrivKey(privKey, senderAddr))
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return reject("Invalid Private key!");
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else if (typeof sendAmt !== 'number' || sendAmt <= 0)
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return reject(`Invalid sendAmt : ${sendAmt}`);
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@ -175,15 +180,36 @@
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if (change > DEFAULT.minChangeAmt)
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trx.addoutput(senderAddr, change);
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trx.addflodata(floData.replace(/\n/g, ' '));
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var signedTxHash = trx.sign(privKey, 1);
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broadcastTx(signedTxHash)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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resolve(trx);
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}
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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floBlockchainAPI.createTx = function (senderAddr, receiverAddr, sendAmt, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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createTx(senderAddr, receiverAddr, sendAmt, floData, strict_utxo)
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.then(trx => resolve(trx.serialize()))
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.catch(error => reject(error))
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})
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}
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//Send Tx to blockchain
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const sendTx = floBlockchainAPI.sendTx = function (senderAddr, receiverAddr, sendAmt, privKey, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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if (!floCrypto.validateFloID(senderAddr, true))
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return reject(`Invalid address : ${senderAddr}`);
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else if (privKey.length < 1 || !floCrypto.verifyPrivKey(privKey, senderAddr))
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return reject("Invalid Private key!");
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createTx(senderAddr, receiverAddr, sendAmt, floData, strict_utxo).then(trx => {
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var signedTxHash = trx.sign(privKey, 1);
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broadcastTx(signedTxHash)
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.then(txid => resolve(txid))
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.catch(error => reject(error))
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}).catch(error => reject(error))
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});
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}
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@ -419,7 +445,7 @@
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}
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//Create a multisig transaction
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const createMultisigTx = floBlockchainAPI.createMultisigTx = function (redeemScript, receivers, amounts, floData = '', strict_utxo = true) {
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const createMultisigTx = function (redeemScript, receivers, amounts, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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var multisig = floCrypto.decodeRedeemScript(redeemScript);
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@ -499,6 +525,15 @@
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});
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}
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//Same as above, but explict call should return serialized tx-hex
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floBlockchainAPI.createMultisigTx = function (redeemScript, receivers, amounts, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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createMultisigTx(redeemScript, receivers, amounts, floData, strict_utxo)
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.then(trx => resolve(trx.serialize()))
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.catch(error => reject(error))
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})
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}
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//Create and send multisig transaction
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const sendMultisigTx = floBlockchainAPI.sendMultisigTx = function (redeemScript, privateKeys, receivers, amounts, floData = '', strict_utxo = true) {
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return new Promise((resolve, reject) => {
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@ -538,6 +573,144 @@
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})
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}
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function deserializeTx(tx) {
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if (typeof tx === 'string' || Array.isArray(tx)) {
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try {
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tx = bitjs.transaction(tx);
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} catch {
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throw "Invalid transaction hex";
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}
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} else if (typeof tx !== 'object' || typeof tx.sign !== 'function')
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throw "Invalid transaction object";
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return tx;
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}
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floBlockchainAPI.signTx = function (tx, privateKey, sighashtype = 1) {
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if (!floCrypto.getFloID(privateKey))
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throw "Invalid Private key";
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//deserialize if needed
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tx = deserializeTx(tx);
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var signedTxHex = tx.sign(privateKey, sighashtype);
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return signedTxHex;
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}
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const checkSigned = floBlockchainAPI.checkSigned = function (tx, bool = true) {
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tx = deserializeTx(tx);
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let n = [];
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for (let i = 0; i < tx.inputs.length; i++) {
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var s = tx.scriptDecode(i);
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if (s['type'] === 'scriptpubkey')
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n.push(s.signed);
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else if (s['type'] === 'multisig') {
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var rs = tx.decodeRedeemScript(s['rs']);
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let x = {
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s: 0,
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r: rs['required'],
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t: rs['pubkeys'].length
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};
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//check input script for signatures
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var script = Array.from(tx.inputs[i].script);
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if (script[0] == 0) { //script with signatures
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script = tx.parseScript(script);
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for (var k = 0; k < script.length; k++)
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if (Array.isArray(script[k]) && script[k][0] == 48) //0x30 DERSequence
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x.s++;
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}
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//validate counts
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if (x.r > x.t)
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throw "signaturesRequired is more than publicKeys";
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else if (x.s < x.r)
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n.push(x);
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else
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n.push(true);
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}
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}
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return bool ? !(n.filter(x => x !== true).length) : n;
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}
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floBlockchainAPI.checkIfSameTx = function (tx1, tx2) {
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tx1 = deserializeTx(tx1);
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tx2 = deserializeTx(tx2);
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//compare input and output length
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if (tx1.inputs.length !== tx2.inputs.length || tx1.outputs.length !== tx2.outputs.length)
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return false;
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//compare flodata
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if (tx1.floData !== tx2.floData)
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return false
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//compare inputs
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for (let i = 0; i < tx1.inputs.length; i++)
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if (tx1.inputs[i].outpoint.hash !== tx2.inputs[i].outpoint.hash || tx1.inputs[i].outpoint.index !== tx2.inputs[i].outpoint.index)
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return false;
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//compare outputs
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for (let i = 0; i < tx1.outputs.length; i++)
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if (tx1.outputs[i].value !== tx2.outputs[i].value || Crypto.util.bytesToHex(tx1.outputs[i].script) !== Crypto.util.bytesToHex(tx2.outputs[i].script))
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return false;
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return true;
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}
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floBlockchainAPI.transactionID = function (tx) {
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tx = deserializeTx(tx);
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let clone = bitjs.clone(tx);
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let raw_bytes = Crypto.util.hexToBytes(clone.serialize());
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let txid = Crypto.SHA256(Crypto.SHA256(raw_bytes, { asBytes: true }), { asBytes: true }).reverse();
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return Crypto.util.bytesToHex(txid);
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}
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const getTxOutput = (txid, i) => new Promise((resolve, reject) => {
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fetch_api(`api/tx/${txid}`)
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.then(result => resolve(result.vout[i]))
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.catch(error => reject(error))
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});
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function getOutputAddress(outscript) {
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var bytes, version;
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switch (outscript[0]) {
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case 118: //legacy
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bytes = outscript.slice(3, outscript.length - 2);
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version = bitjs.pub;
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break
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case 169: //multisig
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bytes = outscript.slice(2, outscript.length - 1);
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version = bitjs.multisig;
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break;
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default: return; //unknown
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}
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bytes.unshift(version);
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var hash = Crypto.SHA256(Crypto.SHA256(bytes, { asBytes: true }), { asBytes: true });
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var checksum = hash.slice(0, 4);
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return bitjs.Base58.encode(bytes.concat(checksum));
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}
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floBlockchainAPI.parseTransaction = function (tx) {
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return new Promise((resolve, reject) => {
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tx = deserializeTx(tx);
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let result = {};
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let promises = [];
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//Parse Inputs
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for (let i = 0; i < tx.inputs.length; i++)
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promises.push(getTxOutput(tx.inputs[i].outpoint.hash, tx.inputs[i].outpoint.index));
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Promise.all(promises).then(inputs => {
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result.inputs = inputs.map(inp => Object({
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address: inp.scriptPubKey.addresses[0],
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value: parseFloat(inp.value)
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}));
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let signed = checkSigned(tx, false);
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result.inputs.forEach((inp, i) => inp.signed = signed[i]);
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//Parse Outputs
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result.outputs = tx.outputs.map(out => Object({
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address: getOutputAddress(out.script),
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value: util.Sat_to_FLO(out.value)
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}))
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//Parse Totals
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result.total_input = parseFloat(result.inputs.reduce((a, inp) => a += inp.value, 0).toFixed(8));
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result.total_output = parseFloat(result.outputs.reduce((a, out) => a += out.value, 0).toFixed(8));
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result.fee = parseFloat((result.total_input - result.total_output).toFixed(8));
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result.floData = tx.floData;
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resolve(result);
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}).catch(error => reject(error))
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})
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}
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//Broadcast signed Tx in blockchain using API
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const broadcastTx = floBlockchainAPI.broadcastTx = function (signedTxHash) {
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return new Promise((resolve, reject) => {
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