diff --git a/public/dashjoin.js b/public/dashjoin.js index ad2fb67..d88249a 100644 --- a/public/dashjoin.js +++ b/public/dashjoin.js @@ -2,10 +2,18 @@ var DashJoin = ('object' === typeof module && exports) || {}; (function (window, DashJoin) { 'use strict'; + // let DashTx = window.DashTx || require('dashtx'); + const DENOM_LOWEST = 100001; const PREDENOM_MIN = DENOM_LOWEST + 193; const COLLATERAL = 10000; // DENOM_LOWEST / 10 + const PAYLOAD_SIZE_MAX = 4 * 1024 * 1024; + + // https://github.com/dashpay/dash/blob/v19.x/src/coinjoin/coinjoin.h#L39 + // const COINJOIN_ENTRY_MAX_SIZE = 9; // real + // const COINJOIN_ENTRY_MAX_SIZE = 2; // just for testing right now + DashJoin.PAYLOAD_SIZE_MAX = PAYLOAD_SIZE_MAX; DashJoin.DENOM_LOWEST = DENOM_LOWEST; DashJoin.COLLATERAL = COLLATERAL; DashJoin.PREDENOM_MIN = PREDENOM_MIN; @@ -31,6 +39,91 @@ var DashJoin = ('object' === typeof module && exports) || {}; return 0; }; + DashJoin.utils = {}; + + DashJoin.utils.hexToBytes = function (hex) { + let bufLen = hex.length / 2; + let u8 = new Uint8Array(bufLen); + + let i = 0; + let index = 0; + let lastIndex = hex.length - 2; + for (;;) { + if (i > lastIndex) { + break; + } + + let h = hex.slice(i, i + 2); + let b = parseInt(h, 16); + u8[index] = b; + + i += 2; + index += 1; + } + + return u8; + }; + + DashJoin.utils.bytesToHex = function (u8) { + /** @type {Array} */ + let hex = []; + + u8.forEach(function (b) { + let h = b.toString(16).padStart(2, '0'); + hex.push(h); + }); + + return hex.join(''); + }; + + DashJoin.utils._evonodeMapToList = function (evonodesMap) { + console.log('[debug] get evonode list...'); + let evonodes = []; + { + //let resp = await rpc.masternodelist(); + let evonodeProTxIds = Object.keys(evonodesMap); + for (let id of evonodeProTxIds) { + let evonode = evonodesMap[id]; + if (evonode.status !== 'ENABLED') { + continue; + } + + let hostParts = evonode.address.split(':'); + let evodata = { + id: evonode.id, + host: evonode.address, + hostname: hostParts[0], + port: hostParts[1], + type: evonode.type, + }; + evonodes.push(evodata); + } + if (!evonodes.length) { + throw new Error('Sanity Fail: no evonodes online'); + } + } + + // void shuffle(evonodes); + evonodes.sort(DashJoin.utils.sortMnListById); + return evonodes; + }; + + /** + * @param {Object} a + * @param {String} a.id + * @param {Object} b + * @param {String} b.id + */ + DashJoin.utils.sortMnListById = function (a, b) { + if (a.id > b.id) { + return 1; + } + if (a.id < b.id) { + return -1; + } + return 0; + }; + //@ts-ignore window.DashJoin = DashJoin; })(globalThis.window || {}, DashJoin); diff --git a/public/dashp2p.js b/public/dashp2p.js new file mode 100644 index 0000000..fd76a6a --- /dev/null +++ b/public/dashp2p.js @@ -0,0 +1,887 @@ +// TODO +// create byte stream socket +// auto handle version / verack +// auto handle ping / pong +// auto pool inv +// emit other messages +// reciprocal parsers and packers +// no backwards-compat with really old legacy clients + +var DashP2P = ('object' === typeof module && exports) || {}; +(function (window, DashP2P) { + 'use strict'; + + const DV_LITTLE_ENDIAN = true; + const EMPTY_CHECKSUM_BYTES = [0x5d, 0xf6, 0xe0, 0xe2]; + + let SIZES = { + // header + MAGIC_BYTES: 4, + COMMAND_NAME: 12, + PAYLOAD_SIZE: 4, + CHECKSUM: 4, + // version + VERSION: 4, + SERVICES: 8, + TIMESTAMP: 8, + ADDR_RECV_SERVICES: 8, + ADDR_RECV_IP: 16, + ADDR_RECV_PORT: 2, + ADDR_TRANS_SERVICES: 8, + ADDR_TRANS_IP: 16, + ADDR_TRANS_PORT: 2, + NONCE: 8, + USER_AGENT_BYTES: 1, // can be skipped + USER_AGENT_STRING: 0, + START_HEIGHT: 4, + // RELAY: 0, + RELAY_NONEMPTY: 1, + // MNAUTH_CHALLENGE: 0, + MNAUTH_CHALLENGE_NONEMPTY: 32, + // MN_CONNECTION: 0, + MN_CONNECTION_NONEMPTY: 1, + }; + + let Crypto = globalThis.crypto; + let textDecoder = new TextDecoder(); + let textEncoder = new TextEncoder(); + + let Packers = {}; + let Parsers = {}; + let Sizes = {}; + let Utils = {}; + + DashP2P.create = function () { + const HEADER_SIZE = Sizes.HEADER_SIZE; + + let p2p = {}; + p2p.state = 'header'; + /** @type {Array} */ + p2p.chunks = []; + p2p.chunksLength = 0; + /** @type {Error?} */ + p2p.error = null; + /** @type {Parser.Header?} */ + p2p.header = null; + /** @type {Uint8Array?} */ + p2p.payload = null; + + p2p._generator = Utils.createPromiseGenerator(); + + p2p.accept = async function (messageTypes) { + let data = await p2p._generator.next(); + return data; + }; + + /** @param {Uint8Array?} */ + p2p.write = function (chunk) { + if (p2p.state === 'error') { + p2p._generator.reject(p2p.error); + + // in the case of UDP where we miss a packet, + // we can log the error but still resume on the next one. + p2p.chunks = []; + p2p.chunksLength = 0; + p2p.state = 'header'; + } + + if (p2p.state === 'header') { + p2p.writeHeaderBytes(chunk); + return; + } + + if (p2p.state === 'payload') { + p2p.writePayloadBytes(chunk); + return; + } + + if (p2p.state === 'result') { + p2p._generator.resolve({ + header: p2p.header, + payload: p2p.payload, + }); + + p2p.state = 'header'; + p2p.writeHeaderBytes(chunk); + console.log( + 'p2p.write() => result', + p2p.header.command, + p2p.payload?.length || null, + ); + return; + } + + let err = new Error(`developer error: unknown state '${p2p.state}'`); + p2p._generator.reject(err); + p2p.state = 'header'; + p2p.write(chunk); + }; + + /** + * @param {Uint8Array?} chunk + */ + p2p.writeHeaderBytes = function (chunk) { + if (chunk) { + p2p.chunks.push(chunk); + p2p.chunksLength += chunk.byteLength; + } + if (p2p.chunksLength < HEADER_SIZE) { + return; + } + + chunk = Utils.concatBytes(p2p.chunks, p2p.chunksLength); + + p2p.chunks = []; + p2p.chunksLength = 0; + if (chunk.byteLength > HEADER_SIZE) { + let nextChunk = chunk.slice(HEADER_SIZE); + p2p.chunks.push(nextChunk); + p2p.chunksLength += nextChunk.byteLength; + chunk = chunk.slice(0, HEADER_SIZE); + } + + // 'header' is complete, on to 'payload' + try { + p2p.header = Parsers.header(chunk); + } catch (e) { + p2p.state = 'error'; + p2p.error = new Error('header parse error'); + return; + } + + p2p.state = 'payload'; + if (p2p.header.payloadSize > DashP2P.PAYLOAD_SIZE_MAX) { + p2p.state = 'error'; + p2p.error = new Error( + `header's payload size ${p2p.header.payloadSize} is larger than the maximum allowed size of ${DashP2P.PAYLOAD_SIZE_MAX}`, + ); + return; + } + + if (p2p.header.payloadSize === 0) { + // 'payload' is complete (skipped), on to the 'result' + p2p.state = 'result'; + p2p.header.payload = null; + p2p.payload = null; + } + + let nextChunk = p2p.chunks.pop(); + p2p.write(nextChunk); + }; + + /** + * @param {Uint8Array?} bytes + */ + p2p.writePayloadBytes = function (chunk) { + if (chunk) { + p2p.chunks.push(chunk); + p2p.chunksLength += chunk.byteLength; + } + if (p2p.chunksLength < p2p.header.payloadSize) { + console.log('DEBUG: more payload than fits in one chunk...'); + return; + } + + chunk = Utils.concatBytes(p2p.chunks, p2p.chunksLength); + p2p.chunks = []; + p2p.chunksLength = 0; + + if (chunk.byteLength > p2p.header.payloadSize) { + let nextChunk = chunk.slice(p2p.header.payloadSize); + p2p.chunks.push(nextChunk); + p2p.chunksLength += chunk.byteLength; + chunk = chunk.slice(0, p2p.header.payloadSize); + } + p2p.state = 'result'; + p2p.header.payload = chunk; + p2p.payload = chunk; + + let nextChunk = p2p.chunks.pop(); + p2p.write(nextChunk); + }; + + return p2p; + }; + + const TOTAL_HEADER_SIZE = + SIZES.MAGIC_BYTES + // 4 + SIZES.COMMAND_NAME + // 12 + SIZES.PAYLOAD_SIZE + // 4 + SIZES.CHECKSUM; // 4 + Sizes.HEADER_SIZE = TOTAL_HEADER_SIZE; // 24 + + Parsers.PING_SIZE = SIZES.NONCE; + + Packers.PROTOCOL_VERSION = 70227; + Packers.NETWORKS = {}; + Packers.NETWORKS.mainnet = { + port: 9999, + magic: new Uint8Array([ + //0xBD6B0CBF, + 0xbf, 0x0c, 0x6b, 0xbd, + ]), + start: 0xbf0c6bbd, + nBits: 0x1e0ffff0, + minimumParticiparts: 3, + }; + Packers.NETWORKS.testnet = { + port: 19999, + magic: new Uint8Array([ + //0xFFCAE2CE, + 0xce, 0xe2, 0xca, 0xff, + ]), + start: 0xcee2caff, + nBits: 0x1e0ffff0, + minimumParticiparts: 2, + }; + Packers.NETWORKS.regtest = { + port: 19899, + magic: new Uint8Array([ + //0xDCB7C1FC, + 0xfc, 0xc1, 0xb7, 0xdc, + ]), + start: 0xfcc1b7dc, + nBits: 0x207fffff, + minimumParticiparts: 2, + }; + Packers.NETWORKS.devnet = { + port: 19799, + magic: new Uint8Array([ + //0xCEFFCAE2, + 0xe2, 0xca, 0xff, 0xce, + ]), + start: 0xe2caffce, + nBits: 0x207fffff, + minimumParticiparts: 2, + }; + + /** + * @typedef {0x01|0x02|0x04|0x400} ServiceBitmask + * @typedef {"NETWORK"|"GETUTXO "|"BLOOM"|"NETWORK_LIMITED"} ServiceName + */ + + /** @type {Object.} */ + let SERVICE_IDENTIFIERS = {}; + Packers.SERVICE_IDENTIFIERS = SERVICE_IDENTIFIERS; + + /** + * 0x00 is the default - not a full node, no guarantees + */ + + /** + * NODE_NETWORK: + * This is a full node and can be asked for full + * blocks. It should implement all protocol features + * available in its self-reported protocol version. + */ + SERVICE_IDENTIFIERS.NETWORK = 0x01; + + /** + * NODE_GETUTXO: + * This node is capable of responding to the getutxo + * protocol request. Dash Core does not support + * this service. + */ + //SERVICE_IDENTIFIERS.GETUTXO = 0x02; + + /** + * NODE_BLOOM: + * This node is capable and willing to handle bloom- + * filtered connections. Dash Core nodes used to support + * this by default, without advertising this bit, but + * no longer do as of protocol version 70201 + * (= NO_BLOOM_VERSION) + */ + // SERVICE_IDENTIFIERS.BLOOM = 0x04; + + /** + * 0x08 is not supported by Dash + */ + + /** + * NODE_NETWORK_LIMITED: + * This is the same as NODE_NETWORK with the + * limitation of only serving the last 288 blocks. + * Not supported prior to Dash Core 0.16.0 + */ + // SERVICE_IDENTIFIERS.NETWORK_LIMITED = 0x400; + + /** + * @param {PackMessage} opts + */ + Packers.message = function ({ + network, + command, + bytes = null, + payload = null, + }) { + if (!Packers.NETWORKS[network]) { + throw new Error(`"network" '${network}' is invalid.`); + } + + let payloadLength = payload?.byteLength || 0; + let messageSize = Sizes.HEADER_SIZE + payloadLength; + let offset = 0; + + let embeddedPayload = false; + let message = bytes; + if (message) { + if (!payload) { + payload = message.subarray(Sizes.HEADER_SIZE); + payloadLength = payload.byteLength; + messageSize = Sizes.HEADER_SIZE + payloadLength; + embeddedPayload = true; + } + } else { + message = new Uint8Array(messageSize); + } + if (message.length !== messageSize) { + throw new Error( + `expected bytes of length ${messageSize}, but got ${message.length}`, + ); + } + message.set(Packers.NETWORKS[network].magic, offset); + offset += SIZES.MAGIC_BYTES; + + // Set command_name (char[12]) + let nameBytes = textEncoder.encode(command); + message.set(nameBytes, offset); + offset += SIZES.COMMAND_NAME; + + // Finally, append the payload to the header + if (!payload) { + // skip because it's already initialized to 0 + //message.set(payloadLength, offset); + offset += SIZES.PAYLOAD_SIZE; + + message.set(EMPTY_CHECKSUM_BYTES, offset); + return message; + } + + let payloadSizeBytes = Utils._uint32ToBytesLE(payloadLength); + message.set(payloadSizeBytes, offset); + offset += SIZES.PAYLOAD_SIZE; + + let checksum = Packers.checksum(payload); + message.set(checksum, offset); + offset += SIZES.CHECKSUM; + + if (!embeddedPayload) { + message.set(payload, offset); + } + return message; + }; + + /** + * First 4 bytes of SHA256(SHA256(payload)) in internal byte order. + * @param {Uint8Array} payload + */ + Packers.checksum = function (payload) { + // TODO this should be node-specific in node for performance reasons + if (Crypto.createHash) { + let hash = Crypto.createHash('sha256').update(payload).digest(); + let hashOfHash = Crypto.createHash('sha256').update(hash).digest(); + return hashOfHash.slice(0, 4); + } + + let hash = Utils.sha256(payload); + let hashOfHash = Utils.sha256(hash); + return hashOfHash.slice(0, 4); + }; + + /** + * Constructs a version message, with fields in the correct byte order. + * @param {VersionOpts} opts + * + * See also: + * - https://dashcore.readme.io/docs/core-ref-p2p-network-control-messages#version + */ + /* jshint maxcomplexity: 9001 */ + /* jshint maxstatements:150 */ + /* (it's simply very complex, okay?) */ + Packers.version = function ({ + protocol_version = Packers.PROTOCOL_VERSION, + // alias of addr_trans_services + //services, + addr_recv_services = [SERVICE_IDENTIFIERS.NETWORK], + addr_recv_ip, // required to match + addr_recv_port, // required to match + addr_trans_services = [], + addr_trans_ip = '127.0.0.1', + addr_trans_port = 65535, + start_height, + nonce = null, + user_agent = null, + relay = null, + mnauth_challenge = null, + }) { + if (!Array.isArray(addr_recv_services)) { + throw new Error('"addr_recv_services" must be an array'); + } + if (mnauth_challenge !== null) { + if (!(mnauth_challenge instanceof Uint8Array)) { + throw new Error('"mnauth_challenge" field must be a Uint8Array'); + } + if (mnauth_challenge.length !== SIZES.MNAUTH_CHALLENGE_NONEMPTY) { + throw new Error( + `"mnauth_challenge" field must be ${SIZES.MNAUTH_CHALLENGE_NONEMPTY} bytes long, not ${mnauth_challenge.length}`, + ); + } + } + + let sizes = { + userAgentString: user_agent?.length || 0, + relay: 0, + mnauthChallenge: 0, + mnConnection: 0, + }; + if (relay !== null) { + sizes.relay = SIZES.RELAY_NONEMPTY; + } + sizes.mnauthChallenge = SIZES.MNAUTH_CHALLENGE_NONEMPTY; + sizes.mnConnection = SIZES.MN_CONNECTION_NONEMPTY; + + let TOTAL_SIZE = + SIZES.VERSION + + SIZES.SERVICES + + SIZES.TIMESTAMP + + SIZES.ADDR_RECV_SERVICES + + SIZES.ADDR_RECV_IP + + SIZES.ADDR_RECV_PORT + + SIZES.ADDR_TRANS_SERVICES + + SIZES.ADDR_TRANS_IP + + SIZES.ADDR_TRANS_PORT + + SIZES.NONCE + + SIZES.USER_AGENT_BYTES + + sizes.userAgentString + + SIZES.START_HEIGHT + + sizes.relay + + sizes.mnauthChallenge + + sizes.mnConnection; + let payload = new Uint8Array(TOTAL_SIZE); + // Protocol version + + //@ts-ignore - protocol_version has a default value + let versionBytes = Utils._uint32ToBytesLE(protocol_version); + payload.set(versionBytes, 0); + + /** + * Set services to NODE_NETWORK (1) + NODE_BLOOM (4) + */ + const SERVICES_OFFSET = SIZES.VERSION; + let senderServicesBytes; + { + let senderServicesMask = 0n; + //@ts-ignore - addr_trans_services has a default value of [] + for (const serviceBit of addr_trans_services) { + senderServicesMask += BigInt(serviceBit); + } + let senderServices64 = new BigInt64Array([senderServicesMask]); // jshint ignore:line + senderServicesBytes = new Uint8Array(senderServices64.buffer); + payload.set(senderServicesBytes, SERVICES_OFFSET); + } + + const TIMESTAMP_OFFSET = SERVICES_OFFSET + SIZES.SERVICES; + { + let tsBytes = Utils._uint32ToBytesLE(Date.now()); + payload.set(tsBytes, TIMESTAMP_OFFSET); + } + + let ADDR_RECV_SERVICES_OFFSET = TIMESTAMP_OFFSET + SIZES.TIMESTAMP; + { + let serverServicesMask = 0n; + //@ts-ignore - addr_recv_services has a default value + for (const serviceBit of addr_recv_services) { + serverServicesMask += BigInt(serviceBit); + } + let serverServices64 = new BigInt64Array([serverServicesMask]); // jshint ignore:line + let serverServicesBytes = new Uint8Array(serverServices64.buffer); + payload.set(serverServicesBytes, ADDR_RECV_SERVICES_OFFSET); + } + + /** + * "ADDR_RECV" means the host that we're sending this traffic to. + * So, in other words, it's the master node + */ + let ADDR_RECV_IP_OFFSET = + ADDR_RECV_SERVICES_OFFSET + SIZES.ADDR_RECV_SERVICES; + { + let ipBytesBE = Utils._ipv4ToBytesBE(addr_recv_ip); + payload.set([0xff, 0xff], ADDR_RECV_IP_OFFSET + 10); + payload.set(ipBytesBE, ADDR_RECV_IP_OFFSET + 12); + } + + /** + * Copy address recv port + */ + let ADDR_RECV_PORT_OFFSET = ADDR_RECV_IP_OFFSET + SIZES.ADDR_RECV_IP; + { + let portBytes16 = Uint16Array.from([addr_recv_port]); + let portBytes = new Uint8Array(portBytes16.buffer); + portBytes.reverse(); + payload.set(portBytes, ADDR_RECV_PORT_OFFSET); + } + + /** + * Copy address transmitted services + */ + let ADDR_TRANS_SERVICES_OFFSET = + ADDR_RECV_PORT_OFFSET + SIZES.ADDR_RECV_PORT; + payload.set(senderServicesBytes, ADDR_TRANS_SERVICES_OFFSET); + + /** + * We add the extra 10, so that we can encode an ipv4-mapped ipv6 address + */ + let ADDR_TRANS_IP_OFFSET = + ADDR_TRANS_SERVICES_OFFSET + SIZES.ADDR_TRANS_SERVICES; + { + //@ts-ignore - addr_trans_ip has a default value + let isIpv6Mapped = addr_trans_ip.startsWith('::ffff:'); + if (isIpv6Mapped) { + //@ts-ignore - addr_trans_ip has a default value + let ipv6Parts = addr_trans_ip.split(':'); + let ipv4Str = ipv6Parts.at(-1); + //@ts-ignore - guaranteed to be defined, actually + let ipBytesBE = Utils._ipv4ToBytesBE(ipv4Str); + payload.set(ipBytesBE, ADDR_TRANS_IP_OFFSET + 12); + payload.set([0xff, 0xff], ADDR_TRANS_IP_OFFSET + 10); // we add the 10 so that we can fill the latter 6 bytes + } else { + /** TODO: ipv4-only & ipv6-only */ + //@ts-ignore - addr_trans_ip has a default value + let ipBytesBE = Utils._ipv4ToBytesBE(addr_trans_ip); + payload.set(ipBytesBE, ADDR_TRANS_IP_OFFSET + 12); + payload.set([0xff, 0xff], ADDR_TRANS_IP_OFFSET + 10); // we add the 10 so that we can fill the latter 6 bytes + } + } + + let ADDR_TRANS_PORT_OFFSET = ADDR_TRANS_IP_OFFSET + SIZES.ADDR_TRANS_IP; + { + let portBytes16 = Uint16Array.from([addr_trans_port]); + let portBytes = new Uint8Array(portBytes16.buffer); + portBytes.reverse(); + payload.set(portBytes, ADDR_TRANS_PORT_OFFSET); + } + + // TODO we should set this to prevent duplicate broadcast + // this can be left zero + let NONCE_OFFSET = ADDR_TRANS_PORT_OFFSET + SIZES.ADDR_TRANS_PORT; + if (!nonce) { + nonce = new Uint8Array(SIZES.NONCE); + Crypto.getRandomValues(nonce); + } + payload.set(nonce, NONCE_OFFSET); + + let USER_AGENT_BYTES_OFFSET = NONCE_OFFSET + SIZES.NONCE; + if (null !== user_agent && typeof user_agent === 'string') { + let userAgentSize = user_agent.length; + payload.set([userAgentSize], USER_AGENT_BYTES_OFFSET); + let uaBytes = textEncoder.encode(user_agent); + payload.set(uaBytes, USER_AGENT_BYTES_OFFSET + 1); + } else { + payload.set([0x0], USER_AGENT_BYTES_OFFSET); + } + + let START_HEIGHT_OFFSET = + USER_AGENT_BYTES_OFFSET + + SIZES.USER_AGENT_BYTES + + SIZES.USER_AGENT_STRING; + { + let heightBytes = Utils._uint32ToBytesLE(start_height); + payload.set(heightBytes, START_HEIGHT_OFFSET); + } + + let RELAY_OFFSET = START_HEIGHT_OFFSET + SIZES.START_HEIGHT; + if (relay !== null) { + let bytes = [0x00]; + if (relay) { + bytes[0] = 0x01; + } + payload.set(bytes, RELAY_OFFSET); + } + + let MNAUTH_CHALLENGE_OFFSET = RELAY_OFFSET + SIZES.RELAY; + if (!mnauth_challenge) { + let rnd = new Uint8Array(32); + Crypto.getRandomValues(rnd); + mnauth_challenge = rnd; + } + payload.set(mnauth_challenge, MNAUTH_CHALLENGE_OFFSET); + + // let MNAUTH_CONNECTION_OFFSET = MNAUTH_CHALLENGE_OFFSET + SIZES.MN_CONNECTION; + // if (mn_connection) { + // payload.set([0x01], MNAUTH_CONNECTION_OFFSET); + // } + + return payload; + }; + + /** + * Parse the 24-byte P2P Message Header + * - 4 byte magic bytes (delimiter) (possibly intended for non-tcp messages?) + * - 12 byte string (stop at first null) + * - 4 byte payload size + * - 4 byte checksum + * + * See also: + * - https://docs.dash.org/projects/core/en/stable/docs/reference/p2p-network-message-headers.html#message-headers + * @param {Uint8Array} bytes + */ + Parsers.header = function (bytes) { + // let buffer = Buffer.from(bytes); + // console.log( + // new Date(), + // '[debug] parseHeader(bytes)', + // buffer.length, + // buffer.toString('hex'), + // ); + // console.log(buffer.toString('utf8')); + // bytes = new Uint8Array(buffer); + + if (bytes.length < Sizes.HEADER_SIZE) { + // console.log( + // `[DEBUG] malformed header`, + // buffer.toString('utf8'), + // buffer.toString('hex'), + // ); + let msg = `developer error: header should be ${Sizes.HEADER_SIZE}+ bytes (optional payload), not ${bytes.length}`; + throw new Error(msg); + } + let dv = new DataView(bytes.buffer); + + let commandStart = 4; + let payloadSizeStart = 16; + let checksumStart = 20; + + let magicBytes = bytes.slice(0, commandStart); + + let commandEnd = bytes.indexOf(0x00, commandStart); + if (commandEnd >= payloadSizeStart) { + throw new Error('command name longer than 12 bytes'); + } + let commandBuf = bytes.slice(commandStart, commandEnd); + let command = textDecoder.decode(commandBuf); + + let payloadSize = dv.getUint32(payloadSizeStart, DV_LITTLE_ENDIAN); + let checksum = bytes.slice(checksumStart, checksumStart + 4); + + let headerMessage = { + magicBytes, + command, + payloadSize, + checksum, + }; + + // if (command !== 'inv') { + // console.log(new Date(), headerMessage); + // } + // console.log(); + return headerMessage; + }; + Parsers.SIZES = SIZES; + + Utils.createPromiseGenerator = function () { + let g = {}; + + g._settled = true; + g._promise = Promise.resolve(); // for type hint + g._results = []; + + g.resolve = function (result) {}; + g.reject = function (err) {}; + g.next = async function () { + if (!g._settled) { + console.warn('g.accept() called before previous call was settled'); + return await g._promise; + } + g._settled = false; + g._promise = new Promise(function (_resolve, _reject) { + g.resolve = function (result) { + if (g._settled) { + g._results.push(result); + return; + } + g._settled = true; + _resolve(result); + }; + g.reject = function (error) { + if (g._settled) { + g._results.push(error); + return; + } + g._settled = true; + _reject(error); + }; + }); + if (g._results.length) { + let result = g._results.shift(); + if (result instanceof Error) { + g.reject(result); + } else { + g.resolve(result); + } + } + return await g._promise; + }; + + return g; + }; + + /** + * @param {Array} byteArrays + * @param {Number?} [len] + * @returns {Uint8Array} + */ + Utils.concatBytes = function (byteArrays, len) { + if (byteArrays.length === 1) { + return byteArrays[0]; + } + + if (!len) { + for (let bytes of byteArrays) { + len += bytes.length; + } + } + + let allBytes = new Uint8Array(len); + let offset = 0; + for (let bytes of byteArrays) { + allBytes.set(bytes, offset); + offset += bytes.length; + } + + return allBytes; + }; + + /** + * @param {String} ipv4 + */ + Utils._ipv4ToBytesBE = function (ipv4) { + let u8s = []; + // let u8s = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff /*,0,0,0,0*/]; + + let octets = ipv4.split('.'); + for (let octet of octets) { + let int8 = parseInt(octet); + u8s.push(int8); + } + + let bytes = Uint8Array.from(u8s); + return bytes; + }; + + /** + * @param {Uint32} n + */ + Utils._uint32ToBytesLE = function (n) { + let u32 = new Uint32Array([n]); + let u8 = new Uint8Array(u32.buffer); + return u8; + }; + + /** + * @param {Uint8Array} bytes + */ + Utils.sha256 = function (bytes) { + /* jshint ignore:start */ + let K = new Uint32Array([ + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, + 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, + 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, + 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, + 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, + 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, + 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, + 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, + ]); + + /** + * @param {Number} value + * @param {Number} amount + */ + function rightRotate(value, amount) { + return (value >>> amount) | (value << (32 - amount)); + } + + let H = new Uint32Array([ + 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, + 0x1f83d9ab, 0x5be0cd19, + ]); + + let padded = new Uint8Array((bytes.length + 9 + 63) & ~63); + padded.set(bytes); + padded[bytes.length] = 0x80; + let dv = new DataView(padded.buffer); + dv.setUint32(padded.length - 4, bytes.length << 3, false); + + let w = new Uint32Array(64); + for (let i = 0; i < padded.length; i += 64) { + for (let j = 0; j < 16; j += 1) { + w[j] = + (padded[i + 4 * j] << 24) | + (padded[i + 4 * j + 1] << 16) | + (padded[i + 4 * j + 2] << 8) | + padded[i + 4 * j + 3]; + } + for (let j = 16; j < 64; j += 1) { + let w1 = w[j - 15]; + let w2 = w[j - 2]; + let s0 = rightRotate(w1, 7) ^ rightRotate(w1, 18) ^ (w1 >>> 3); + let s1 = rightRotate(w2, 17) ^ rightRotate(w2, 19) ^ (w2 >>> 10); + w[j] = w[j - 16] + s0 + w[j - 7] + s1; + } + + let [a, b, c, d, e, f, g, h] = H; + for (let j = 0; j < 64; j += 1) { + let S1 = rightRotate(e, 6) ^ rightRotate(e, 11) ^ rightRotate(e, 25); + let ch = (e & f) ^ (~e & g); + let temp1 = h + S1 + ch + K[j] + w[j]; + let S0 = rightRotate(a, 2) ^ rightRotate(a, 13) ^ rightRotate(a, 22); + let maj = (a & b) ^ (a & c) ^ (b & c); + let temp2 = S0 + maj; + + h = g; + g = f; + f = e; + e = d + temp1; + d = c; + c = b; + b = a; + a = temp1 + temp2; + } + + H[0] += a; + H[1] += b; + H[2] += c; + H[3] += d; + H[4] += e; + H[5] += f; + H[6] += g; + H[7] += h; + } + + let numBytes = H.length * 4; + let hash = new Uint8Array(numBytes); + for (let i = 0; i < H.length; i += 1) { + hash[i * 4] = (H[i] >>> 24) & 0xff; + hash[i * 4 + 1] = (H[i] >>> 16) & 0xff; + hash[i * 4 + 2] = (H[i] >>> 8) & 0xff; + hash[i * 4 + 3] = H[i] & 0xff; + } + return hash; + /* jshint ignore:end */ + }; + + DashP2P.packers = Packers; + DashP2P.parsers = Parsers; + DashP2P.sizes = Sizes; + DashP2P.utils = Utils; + + //@ts-ignore + window.DashP2P = DashP2P; +})(globalThis.window || {}, DashP2P); +if ('object' === typeof module) { + module.exports = DashP2P; +} diff --git a/public/index.html b/public/index.html index b5a5b47..48b936d 100644 --- a/public/index.html +++ b/public/index.html @@ -10,6 +10,7 @@ +