76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
var base58check = require('./base58check');
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var constants = require('./constants');
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var Hash = require('./hash');
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var Pubkey = require('./pubkey');
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function Address(hash, network, type) {
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this.hash = hash;
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this.network = network;
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this.type = type;
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};
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Address.prototype.fromPubkey = function(pubkey, network, compressed) {
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if (typeof compressed === 'undefined')
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compressed = true;
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this.hash = Hash.sha256ripemd160(pubkey.toDER(compressed));
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this.network = network || 'mainnet';
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this.type = 'pubkeyhash';
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return this;
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};
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Address.prototype.fromString = function(str) {
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var buf = base58check.decode(str);
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if (buf.length !== 1 + 20)
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throw new Error('address: Address buffers must be exactly 21 bytes');
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var version = buf[0];
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if (version === constants['mainnet']['pubkeyhash']) {
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this.network = 'mainnet';
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this.type = 'pubkeyhash';
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} else if (version === constants['mainnet']['p2sh']) {
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this.network = 'mainnet';
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this.type = 'p2sh';
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} else if (version === constants['testnet']['pubkeyhash']) {
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this.network = 'testnet';
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this.type = 'pubkeyhash';
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} else if (version === constants['testnet']['p2sh']) {
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this.network = 'testnet';
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this.type = 'p2sh';
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} else {
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this.network = 'unknown';
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this.type = 'unknown';
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}
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this.hash = buf.slice(1);
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}
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Address.prototype.isValid = function() {
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try {
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this.validate();
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return true;
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} catch (e) {
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return false;
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}
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};
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Address.prototype.toBuffer = function() {
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version = new Buffer([constants[this.network][this.type]]);
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var buf = Buffer.concat([version, this.hash]);
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return buf;
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};
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Address.prototype.toString = function() {
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return base58check.encode(this.toBuffer());
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};
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Address.prototype.validate = function() {
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if (!Buffer.isBuffer(this.hash) || this.hash.length !== 20)
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throw new Error('address: hash must be a buffer of 20 bytes');
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if (this.network !== 'mainnet' && this.network !== 'testnet')
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throw new Error('address: network must be "mainnet" or "testnet"');
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if (this.type !== 'pubkeyhash' && this.type !== 'p2sh')
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throw new Error('address: type must be "pubkeyhash" or "p2sh"');
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return this;
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};
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module.exports = Address;
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