91 lines
2.7 KiB
JavaScript
91 lines
2.7 KiB
JavaScript
'use strict';
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var rlp = require('rlp');
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var Contract = require('./contract.js');
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var Provider = require('./provider.js');
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var SigningKey = require('./signing-key.js');
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var utils = require('./utils.js');
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var transactionFields = [
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{name: 'nonce', maxLength: 32, },
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{name: 'gasPrice', maxLength: 32, },
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{name: 'gasLimit', maxLength: 32, },
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{name: 'to', length: 20, },
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{name: 'value', maxLength: 32, },
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{name: 'data'},
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];
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function Wallet(privateKey, provider) {
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if (!(this instanceof Wallet)) { throw new Error('missing new'); }
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// Make sure we have a valid signing key
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var signingKey = privateKey;
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if (!(privateKey instanceof SigningKey)) {
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signingKey = new SigningKey(privateKey);
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}
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utils.defineProperty(this, 'privateKey', signingKey.privateKey);
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if (provider) {
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utils.defineProperty(this, 'provider', new Provider(provider));
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}
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utils.defineProperty(this, 'address', signingKey.address);
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utils.defineProperty(this, 'sign', function(transaction) {
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var raw = [];
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transactionFields.forEach(function(fieldInfo) {
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var value = transaction[fieldInfo.name] || (new Buffer(0));
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value = utils.hexOrBuffer(utils.hexlify(value), fieldInfo.name);
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// Fixed-width field
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if (fieldInfo.length && value.length !== fieldInfo.length) {
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var error = new Error('invalid ' + fieldInfo.name);
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error.reason = 'wrong length';
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error.value = value;
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throw error;
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}
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// Variable-width (with a maximum)
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if (fieldInfo.maxLength) {
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value = utils.stripZeros(value);
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if (value.length > fieldInfo.maxLength) {
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var error = new Error('invalid ' + fieldInfo.name);
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error.reason = 'too long';
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error.value = value;
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throw error;
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}
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}
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raw.push(value);
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});
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var digest = utils.sha3(rlp.encode(raw));
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var signature = signingKey.signDigest(digest);
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var s = signature.s;
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var v = signature.recoveryParam;
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raw.push(new Buffer([27 + v]));
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raw.push(utils.bnToBuffer(signature.r));
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raw.push(utils.bnToBuffer(s));
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return ('0x' + rlp.encode(raw).toString('hex'));
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});
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}
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utils.defineProperty(Wallet.prototype, 'getContract', function(address, abi) {
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return new Contract(this.provider, this, address, new Contract.Interface(abi));
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});
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utils.defineProperty(Wallet, 'getAddress', SigningKey.getAddress);
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utils.defineProperty(Wallet, 'getIcapAddress', SigningKey.getIcapAddress);
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utils.defineProperty(Wallet, '_Contract', Contract);
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module.exports = Wallet;
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