889 lines
32 KiB
JavaScript
889 lines
32 KiB
JavaScript
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const express = require("express");
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const net = require("net");
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const ABS_HOST = process.env.ABS_HOST || "192.0.0.14";
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const ABS_PORT = Number(process.env.ABS_PORT || 7000);
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const ABS_POLL = 178;
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const LOG = 100;
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const LOGBT = 6013;
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const BTI = 6014;
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const RPI = 6015;
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const SUCCESS = 0;
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const PKT_SIZE = 512;
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const PAYLOAD_PER_PKT = PKT_SIZE - 1;
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const DEFAULT_TIMEOUT_MS = Number(process.env.BRIDGE_TIMEOUT_MS || 20000);
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const RETRIES = Number(process.env.BRIDGE_RETRIES || 2);
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const RETRY_DELAY_MS = Number(process.env.BRIDGE_RETRY_DELAY_MS || 500);
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const MAX_VENUES = 10;
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const MAX_RACES = 14;
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const MAX_POOLS = 8;
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const MAX_HORSES = 24;
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const app = express();
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// Venue and pool mappings
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const venueMapping = {
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1: "BLR", 2: "MUM", 3: "MAA", 4: "CAL", 5: "HYD",
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6: "MYS", 7: "OTY", 8: "PUN", 9: "GYM", 10: "OVS"
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};
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const poolMapping = {
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1: "WNP", 2: "PLP", 3: "SHP", 4: "THP", 5: "QNP",
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6: "FRP", 7: "TNP", 8: "EXP", 9: "TBP", 10: "MJP", 11: "JPP"
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};
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const multiLegPoolMapping = {
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"T1": "TBP", "T2": "TBP", "T3": "TBP",
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"M1": "MJP", "M2": "MJP", "M3": "MJP",
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"J1": "JPP", "J2": "JPP", "J3": "JPP"
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};
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function getDateStr(nDate) {
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const s = nDate.toString().padStart(8, "0");
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return `${s.slice(0, 4)}/${s.slice(4, 6)}/${s.slice(6, 8)}`;
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}
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function getTimeStr(nTime) {
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const s = nTime.toString().padStart(6, "0");
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return `${s.slice(0, 2)}:${s.slice(2, 4)}:${s.slice(4, 6)}`;
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}
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function getVenueIdStr(nVenue) {
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return venueMapping[nVenue] || "";
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}
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function getPoolIdStr(nPoolId) {
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return poolMapping[nPoolId] || "";
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}
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function getMultiLegPoolIdStr(szMultiLegRace) {
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return multiLegPoolMapping[szMultiLegRace] || "";
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}
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function readJsonBody(req) {
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return new Promise((resolve) => {
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const chunks = [];
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req.on("data", (c) => chunks.push(c));
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req.on("end", () => {
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if (!chunks.length) return resolve({});
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const txt = Buffer.concat(chunks).toString("utf8").trim();
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if (!txt) return resolve({});
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try { resolve(JSON.parse(txt)); } catch { resolve({}); }
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});
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});
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}
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function writeFixedAscii(buf, offset, s, len) {
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const str = (s ?? "").toString();
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for (let i = 0; i < len; i++) buf[offset + i] = i < str.length ? (str.charCodeAt(i) & 0xff) : 0x00;
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return offset + len;
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}
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function readFixedAscii(buf, offset, len) {
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let end = offset;
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const max = offset + len;
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while (end < max && buf[end] !== 0) end++;
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const raw = buf.subarray(offset, end).toString("ascii");
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return { value: raw.trimEnd(), next: offset + len };
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}
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function hexSlice(buf, off, len) {
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const s = Math.max(0, off);
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const e = Math.min(buf.length, off + len);
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return buf.subarray(s, e).toString("hex");
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}
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function remaining(buf, off) {
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return Math.max(0, buf.length - off);
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}
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function safeAdvanceOrBreak(buf, off, want, outObj) {
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if (remaining(buf, off) < want) {
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outObj._truncated = true;
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return false;
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}
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return true;
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}
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function looksLikeHeaderAt(buf, off, expected_nTxnCd = null) {
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if (remaining(buf, off) < 18) return false;
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try {
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const nTxnCd = buf.readInt32LE(off);
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const nRetCd = buf.readInt32LE(off + 4);
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const nNumRecs = buf.readInt32LE(off + 8);
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// Allow nTxnCd: 100 as a fallback for any section, since the server may send it
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const validTxnCd = expected_nTxnCd ? (nTxnCd === expected_nTxnCd || nTxnCd === 100) : (nTxnCd >= 100 && nTxnCd <= 105);
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return validTxnCd && nRetCd >= 0 && nRetCd < 10000 && nNumRecs >= 0 && nNumRecs < 100;
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} catch { return false; }
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}
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function alignToPossibleHeader(reply, off, expected_nTxnCd = null) {
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// Try current offset and additional offsets for alignment
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const tryOffsets = [0, 2, 4, -4, 8, 12];
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for (const d of tryOffsets) {
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const o = off + d;
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if (o >= 0 && looksLikeHeaderAt(reply, o, expected_nTxnCd)) return o;
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}
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// Fallback: align to valid nRaceDt (20000101–21001231)
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for (const d of tryOffsets) {
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const o = off + d;
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if (o >= 0 && remaining(reply, o) >= 4) {
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const nRaceDt = reply.readInt32LE(o);
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if (nRaceDt >= 20000101 && nRaceDt <= 21001231) return o;
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}
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}
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return off;
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}
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function adjustForOptionalOp(replyBuf, bodyOffset) {
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if (replyBuf.length >= bodyOffset + 4) {
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const maybeOp = replyBuf.readInt32LE(bodyOffset);
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if (maybeOp === LOGBT || maybeOp === LOG || maybeOp === 0 || (maybeOp >= 100 && maybeOp <= 10000)) {
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return { offset: bodyOffset + 4, extraOp: maybeOp };
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}
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}
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return { offset: bodyOffset, extraOp: null };
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}
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function absSend(sock, payload) {
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return new Promise((resolve, reject) => {
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let off = 0;
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function sendNext() {
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const remaining = payload.length - off;
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const toCopy = Math.min(PAYLOAD_PER_PKT, Math.max(remaining, 0));
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const pkt = Buffer.alloc(PKT_SIZE, 0);
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pkt[0] = (off + toCopy >= payload.length) ? 48 : 49;
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if (toCopy > 0) payload.copy(pkt, 1, off, off + toCopy);
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off += toCopy;
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sock.write(pkt, (err) => {
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if (err) return reject(err);
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if (pkt[0] === 48) return resolve();
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sendNext();
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});
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}
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if (!payload || payload.length === 0) {
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const pkt = Buffer.alloc(PKT_SIZE, 0);
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pkt[0] = 48;
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sock.write(pkt, (err) => err ? reject(err) : resolve());
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} else {
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sendNext();
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}
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});
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}
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function absRecv(sock, timeoutMs = DEFAULT_TIMEOUT_MS) {
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return new Promise((resolve, reject) => {
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const chunks = [];
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let buf = Buffer.alloc(0);
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const timer = timeoutMs ? setTimeout(() => done(new Error("TCP timeout")), timeoutMs) : null;
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function done(err) {
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if (timer) clearTimeout(timer);
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sock.off("data", onData);
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if (err) reject(err);
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else resolve(Buffer.concat(chunks));
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}
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function onData(data) {
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buf = Buffer.concat([buf, data]);
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while (buf.length >= PKT_SIZE) {
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const pkt = buf.subarray(0, PKT_SIZE);
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buf = buf.subarray(PKT_SIZE);
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const flag = pkt[0];
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chunks.push(pkt.subarray(1));
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if (flag === 48) return done();
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}
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}
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sock.on("data", onData);
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sock.on("error", (e) => done(e));
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sock.on("end", () => done(new Error("Socket ended before final '0' packet")));
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});
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}
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async function absRoundtrip(payload, timeoutMs = DEFAULT_TIMEOUT_MS) {
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const sock = new net.Socket();
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await new Promise((res, rej) => sock.connect(ABS_PORT, ABS_HOST, res).once("error", rej));
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try {
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await absSend(sock, payload || Buffer.alloc(0));
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const replyConcat = await absRecv(sock, timeoutMs);
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sock.end();
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return replyConcat;
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} catch (e) {
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try { sock.destroy(); } catch {}
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throw e;
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}
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}
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async function withRetry(fn, tries = RETRIES, delayMs = RETRY_DELAY_MS) {
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let lastErr;
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for (let i = 0; i < tries; i++) {
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try { return await fn(); }
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catch (e) { lastErr = e; if (i + 1 < tries) await new Promise(r => setTimeout(r, delayMs)); }
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}
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throw lastErr;
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}
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function encryptPasswordLikeMFC(plain) {
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const sec = new Date().getUTCSeconds();
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const key = Number(String(sec)[0] || "0");
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let out = "";
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const s = (plain ?? "").toString();
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for (let i = 0; i < s.length; i++) {
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const ch = s[i];
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const d = (ch >= "0" && ch <= "9") ? (ch.charCodeAt(0) - 48) : 0;
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out += String((d + key) % 10);
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}
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return { enc: out + String(key), key, utcSeconds: sec };
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}
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function packSndHeader({ nTxnCd, nOpCd = 0, nNumRecsSent = 0, nNumRecsRqrd = 0, nTxnId = 0, cBtMake = 0 }) {
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const b = Buffer.alloc(24, 0);
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let o = 0;
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b.writeInt32LE(nTxnCd, o); o += 4;
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b.writeInt32LE(nOpCd, o); o += 4;
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b.writeInt32LE(nNumRecsSent, o); o += 4;
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b.writeInt32LE(nNumRecsRqrd, o); o += 4;
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b.writeInt32LE(nTxnId, o); o += 4;
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b.writeUInt8(cBtMake & 0xff, o);
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return b;
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}
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function parseRcvHeaderFlexible(buf) {
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if (buf.length < 18) throw new Error(`Reply too short for RcvHeader: ${buf.length} bytes`);
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function readAs(len) {
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let o = 0;
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const nTxnCd = buf.readInt32LE(o); o += 4;
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const nRetCd = buf.readInt32LE(o); o += 4;
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const nNumRecs = buf.readInt32LE(o); o += 4;
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const nTxnId = buf.readInt32LE(o); o += 4;
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const cBtMake = buf.readUInt8(o);
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return { nTxnCd, nRetCd, nNumRecs, nTxnId, cBtMake, size: len };
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}
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const h18 = readAs(18);
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const ok18 = (h18.nTxnCd >= 50 && h18.nTxnCd < 10000) && (h18.nRetCd >= 0 && h18.nRetCd < 10000) && (h18.nNumRecs >= 0 && h18.nNumRecs < 100);
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let h24 = null, ok24 = false;
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if (buf.length >= 24) {
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h24 = readAs(24);
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ok24 = (h24.nTxnCd >= 50 && h24.nTxnCd < 10000) && (h24.nRetCd >= 0 && h24.nRetCd < 10000) && (h24.nNumRecs >= 0 && h24.nNumRecs < 100);
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}
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if (ok18 && !ok24) return h18;
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if (!ok18 && ok24) return h24;
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if (ok18 && ok24) return h18;
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return h18;
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}
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function buildRcvHeader18({ nTxnCd, nRetCd, nNumRecs = 0, nTxnId = 0, cBtMake = 0 }) {
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const b = Buffer.alloc(18, 0);
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let o = 0;
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b.writeInt32LE(nTxnCd, o); o += 4;
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b.writeInt32LE(nRetCd, o); o += 4;
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b.writeInt32LE(nNumRecs, o); o += 4;
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b.writeInt32LE(nTxnId, o); o += 4;
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b.writeUInt8(cBtMake & 0xff, o);
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return b;
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}
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function alignToAsciiYear(reply, off) {
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const tryOffsets = [0, 2, 4, -4, 8, 12];
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for (const d of tryOffsets) {
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const o = off + d;
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if (o >= 0 && o + 1 < reply.length) {
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const b0 = reply[o], b1 = reply[o + 1];
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if (b0 === 0x32 && b1 === 0x30) return o;
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if (reply[o] === 0x2f && o >= 4 && reply[o - 4] === 0x32 && reply[o - 3] === 0x30) return o - 4;
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}
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}
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return off;
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}
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function packSndLog({ usrId = "", opCard, passwd, btId }) {
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const b = Buffer.alloc(38, 0);
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let o = 0;
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o = writeFixedAscii(b, o, usrId, 5);
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o = writeFixedAscii(b, o, opCard, 17);
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o = writeFixedAscii(b, o, passwd, 11);
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o = writeFixedAscii(b, o, btId, 5);
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return b;
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}
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function parseRcvLog(buf, offset = 0) {
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let o = offset;
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const t1 = readFixedAscii(buf, o, 20); const cDateTime = t1.value; o = t1.next;
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const t2 = readFixedAscii(buf, o, 31); const cUsrNm = t2.value; o = t2.next;
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const t3 = readFixedAscii(buf, o, 5); const cUsrId = t3.value; o = t3.next;
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const t4 = readFixedAscii(buf, o, 31); const cSupNm = t4.value; o = t4.next;
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const t5 = readFixedAscii(buf, o, 5); const cSupId = t5.value; o = t5.next;
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const t6 = readFixedAscii(buf, o, 5); const cUsrTyp = t6.value; o = t6.next;
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function rf() { const v = buf.readFloatLE(o); o += 4; return v; }
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function ri() { const v = buf.readInt32LE(o); o += 4; return v; }
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const fOpenBal = rf();
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const fTktSalesByVoucher = rf();
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const fTktSalesByCash = rf();
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const fTktSalesByMemCard = rf();
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const nTktSalesByVoucherCount = ri();
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const nTktSalesByCashCount = ri();
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const nTktSalesByMemCardCount = ri();
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const fPayoutByVoucher = rf();
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const fPayoutByCash = rf();
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const fPayoutByMemCard = rf();
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const nPayoutByVoucherCount = ri();
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const nPayoutByCashCount = ri();
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const nPayoutByMemCardCount = ri();
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const fCancelByVoucher = rf();
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const fCancelByCash = rf();
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const fCancelByMemCard = rf();
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const nCancelByVoucherCount = ri();
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const nCancelByCashCount = ri();
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const nCancelByMemCardCount = ri();
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const fDeposit = rf();
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const fWithdrawAmt = rf();
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const fVoucherSales = rf();
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const fVoucherEncash = rf();
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const fCloseBal = rf();
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const fSaleTarget = rf();
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return {
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cDateTime, cUsrNm, cUsrId, cSupNm, cSupId, cUsrTyp,
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fOpenBal, fTktSalesByVoucher, fTktSalesByCash, fTktSalesByMemCard,
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nTktSalesByVoucherCount, nTktSalesByCashCount, nTktSalesByMemCardCount,
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fPayoutByVoucher, fPayoutByCash, fPayoutByMemCard,
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nPayoutByVoucherCount, nPayoutByCashCount, nPayoutByMemCardCount,
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fCancelByVoucher, fCancelByCash, fCancelByMemCard,
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nCancelByVoucherCount, nCancelByCashCount, nCancelByMemCardCount,
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fDeposit, fWithdrawAmt, fVoucherSales, fVoucherEncash,
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fCloseBal, fSaleTarget,
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size: o - offset
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};
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}
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function parseRcvBtiMst(buf, offset) {
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let o = offset;
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const a1 = readFixedAscii(buf, o, 5); const cBtId = a1.value; o = a1.next;
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const a2 = readFixedAscii(buf, o, 31); const cBtName = a2.value; o = a2.next;
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const a3 = readFixedAscii(buf, o, 5); const cEnclCd = a3.value; o = a3.next;
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const a4 = readFixedAscii(buf, o, 4); const cGrpCd = a4.value; o = a4.next;
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const cBtMode = String.fromCharCode(buf[o]); o += 1;
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const a5 = readFixedAscii(buf, o, 4); const cMoneyTyp = a5.value; o = a5.next;
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o = (o + 3) & ~3;
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const fMinSaleBet = buf.readFloatLE(o); o += 4;
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const fMaxSaleBet = buf.readFloatLE(o); o += 4;
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const fPayMaxAmt = buf.readFloatLE(o); o += 4;
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return { cBtId, cBtName, cEnclCd, cGrpCd, cBtMode, cMoneyTyp, fMinSaleBet, fMaxSaleBet, fPayMaxAmt, size: o - offset };
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}
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function parseRcvBtiDtl(buf, offset) {
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let o = offset;
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const cDtlTyp = String.fromCharCode(buf[o]); o += 1;
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if (remaining(buf, o) < 4) {
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const avail = Math.max(0, remaining(buf, o));
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const aRem = readFixedAscii(buf, o, avail);
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const cPoolOrVenue = aRem.value;
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o = aRem.next;
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const cDtlSts = o < buf.length ? String.fromCharCode(buf[o]) : "";
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if (o < buf.length) o += 1;
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return { cDtlTyp, cPoolOrVenue, cDtlSts, size: o - offset };
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}
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const a3 = readFixedAscii(buf, o, 3);
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const cPoolOrVenue3 = a3.value;
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const after3 = a3.next;
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const statusCandidate = buf[after3];
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const isPrintable = (statusCandidate >= 0x20 && statusCandidate <= 0x7E);
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if (isPrintable) {
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o = after3;
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const cDtlSts = String.fromCharCode(buf[o]); o += 1;
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return { cDtlTyp, cPoolOrVenue: cPoolOrVenue3, cDtlSts, size: o - offset };
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}
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const a4 = readFixedAscii(buf, o, 4);
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const cPoolOrVenue4 = a4.value;
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o = a4.next;
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const cDtlSts = o < buf.length ? String.fromCharCode(buf[o]) : "";
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if (o < buf.length) o += 1;
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return { cDtlTyp, cPoolOrVenue: cPoolOrVenue4, cDtlSts, size: o - offset };
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}
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function parseRcvRpi1(buf, offset) {
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let o = offset;
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const nRaceDt = buf.readInt32LE(o); o += 4;
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const cVenueNum = buf.readUInt8(o); o += 1;
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const cVenueSts = String.fromCharCode(buf[o]); o += 1;
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const aR = readFixedAscii(buf, o, 15); const cRaces = aR.value; o = aR.next;
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const aAd = readFixedAscii(buf, o, 41); const cAdvertisement = aAd.value; o = aAd.next;
|
||
return { nRaceDt, cVenueNum, cVenueSts, cRaces, cAdvertisement, size: o - offset };
|
||
}
|
||
|
||
function parseRcvRpi2(buf, offset) {
|
||
let o = offset;
|
||
const nRaceDt = buf.readInt32LE(o); o += 4;
|
||
const cVenueNum = buf.readUInt8(o); o += 1;
|
||
const cRaceNum = buf.readUInt8(o); o += 1;
|
||
const aH = readFixedAscii(buf, o, 25); const cHorses = aH.value; o = aH.next;
|
||
const nRaceStartTm = buf.readInt32LE(o); o += 4;
|
||
return { nRaceDt, cVenueNum, cRaceNum, cHorses, nRaceStartTm, size: o - offset };
|
||
}
|
||
|
||
function parseRcvRpi3(buf, offset) {
|
||
let o = offset;
|
||
const nRaceDt = buf.readInt32LE(o); o += 4;
|
||
const cVenueNum = buf.readUInt8(o); o += 1;
|
||
const cRaceNum = buf.readUInt8(o); o += 1;
|
||
const aP = readFixedAscii(buf, o, 9); const cPools = aP.value; o = aP.next;
|
||
return { nRaceDt, cVenueNum, cRaceNum, cPools, size: o - offset };
|
||
}
|
||
|
||
function parseRcvRpi4(buf, offset) {
|
||
let o = offset;
|
||
const nRaceDt = buf.readInt32LE(o); o += 4;
|
||
const cVenueNum = buf.readUInt8(o); o += 1;
|
||
const cRaceNum = buf.subarray(o, o + 3).toString("ascii").replace(/\0/g, ""); o += 3;
|
||
const aSel = readFixedAscii(buf, o, 11); const cSelectRaceNum = aSel.value; o = aSel.next;
|
||
const cPoolSts = String.fromCharCode(buf[o]); o += 1;
|
||
return { nRaceDt, cVenueNum, cRaceNum, cSelectRaceNum, cPoolSts, size: o - offset };
|
||
}
|
||
|
||
function parseRcvPvm(buf, offset) {
|
||
let o = offset;
|
||
const a1 = readFixedAscii(buf, o, 4); const cRaceVenue = a1.value; o = a1.next;
|
||
const a2 = readFixedAscii(buf, o, 4); const cPoolId = a2.value; o = a2.next;
|
||
const fUnitPrice = buf.readFloatLE(o); o += 4;
|
||
const fTaxRate = buf.readFloatLE(o); o += 4;
|
||
const fDeductRate = buf.readFloatLE(o); o += 4;
|
||
const a3 = readFixedAscii(buf, o, 31); const cRemarks = a3.value; o = a3.next;
|
||
return { cRaceVenue, cPoolId, fUnitPrice, fTaxRate, fDeductRate, cRemarks, size: o - offset };
|
||
}
|
||
|
||
app.get("/", (_req, res) => res.send("ABS bridge is up"));
|
||
|
||
app.get("/health", (_req, res) => {
|
||
const s = new net.Socket();
|
||
s.setTimeout(1500);
|
||
s.connect(ABS_PORT, ABS_HOST, () => { s.destroy(); res.json({ ok: true, target: `${ABS_HOST}:${ABS_PORT}` }); });
|
||
s.on("timeout", () => { s.destroy(); res.status(504).json({ ok: false, error: "TCP timeout" }); });
|
||
s.on("error", (e) => { s.destroy(); res.status(502).json({ ok: false, error: String(e) }); });
|
||
});
|
||
|
||
app.post("/abs/poll", async (req, res) => {
|
||
try {
|
||
const body = await readJsonBody(req);
|
||
const btMake = (typeof body.btMake === "string")
|
||
? body.btMake.charCodeAt(0)
|
||
: (Number.isFinite(body.btMake) ? (body.btMake | 0) : 0x00);
|
||
|
||
const header = packSndHeader({ nTxnCd: ABS_POLL, nOpCd: 0, nNumRecsSent: 0, nNumRecsRqrd: 0, nTxnId: 0, cBtMake: btMake });
|
||
|
||
const reply = await withRetry(() => absRoundtrip(header, DEFAULT_TIMEOUT_MS), RETRIES, RETRY_DELAY_MS);
|
||
const hdr = parseRcvHeaderFlexible(reply.subarray(0, Math.min(reply.length, 24)));
|
||
|
||
res.json({
|
||
ok: true,
|
||
target: `${ABS_HOST}:${ABS_PORT}`,
|
||
sentHeaderHex: header.toString("hex"),
|
||
replyBytes: reply.length,
|
||
replyHexFirst64: reply.subarray(0, 64).toString("hex"),
|
||
parsedRcvHeaderRaw: hdr,
|
||
normalizedRcvHeader: { ...hdr, size: 18 },
|
||
normalizedHeaderHex: buildRcvHeader18(hdr).toString("hex"),
|
||
success: hdr.nRetCd === SUCCESS
|
||
});
|
||
} catch (e) {
|
||
res.status(502).json({ ok: false, error: String(e) });
|
||
}
|
||
});
|
||
|
||
app.post("/login", async (req, res) => {
|
||
try {
|
||
const body = await readJsonBody(req);
|
||
const opCard = (body.opCard ?? "").toString();
|
||
const btId = (body.btId ?? "").toString();
|
||
const usrId = (body.usrId ?? "").toString();
|
||
const plain = (body.password ?? "");
|
||
const givenEnc = (body.passwordEnc ?? "");
|
||
|
||
if (!opCard || !btId || (!plain && !givenEnc)) {
|
||
return res.status(400).json({ ok: false, error: "Missing opCard, btId, and either password or passwordEnc" });
|
||
}
|
||
|
||
let encInfo = null;
|
||
let passwd = givenEnc ? String(givenEnc) : (encInfo = encryptPasswordLikeMFC(String(plain))).enc;
|
||
|
||
const btMake = (typeof body.btMake === "string")
|
||
? body.btMake.charCodeAt(0)
|
||
: (Number.isFinite(body.btMake) ? (body.btMake | 0) : 0x00);
|
||
|
||
const sndHeader = packSndHeader({ nTxnCd: LOG, nOpCd: LOGBT, nNumRecsSent: 1, nNumRecsRqrd: 1, nTxnId: 0, cBtMake: btMake });
|
||
const sndLog = packSndLog({ usrId, opCard, passwd, btId });
|
||
const sendBuf = Buffer.concat([sndHeader, sndLog]);
|
||
|
||
const reply = await withRetry(() => absRoundtrip(sendBuf, DEFAULT_TIMEOUT_MS), RETRIES, RETRY_DELAY_MS);
|
||
|
||
const rcvHeader = parseRcvHeaderFlexible(reply.subarray(0, Math.min(reply.length, 24)));
|
||
|
||
const json = {
|
||
ok: true,
|
||
target: `${ABS_HOST}:${ABS_PORT}`,
|
||
sentHeaderHex: sndHeader.toString("hex"),
|
||
sentBodyHex: sndLog.toString("hex"),
|
||
replyBytes: reply.length,
|
||
replyHexFirst64: reply.subarray(0, 64).toString("hex"),
|
||
rcvHeaderRaw: rcvHeader,
|
||
success: rcvHeader.nRetCd === SUCCESS
|
||
};
|
||
|
||
if (!givenEnc && encInfo) {
|
||
json.encryption = { used: true, utcSeconds: encInfo.utcSeconds, key: encInfo.key, encPasswd: passwd };
|
||
} else if (givenEnc) {
|
||
json.encryption = { used: false, providedPasswordEnc: true };
|
||
}
|
||
|
||
let bodyOffset = rcvHeader.size;
|
||
bodyOffset = adjustForOptionalOp(reply, bodyOffset).offset;
|
||
bodyOffset = alignToAsciiYear(reply, bodyOffset);
|
||
|
||
json.offsetProbe = {
|
||
bodyOffset,
|
||
around: reply.subarray(Math.max(0, bodyOffset - 8), Math.min(reply.length, bodyOffset + 48)).toString("ascii")
|
||
};
|
||
|
||
if (json.success && reply.length >= bodyOffset + 20) {
|
||
try { json.log = parseRcvLog(reply, bodyOffset); } catch (e) { json.parseLogError = String(e); }
|
||
}
|
||
|
||
res.json(json);
|
||
} catch (e) {
|
||
res.status(502).json({ ok: false, error: String(e) });
|
||
}
|
||
});
|
||
|
||
app.post("/download/btinfo", async (req, res) => {
|
||
try {
|
||
const body = await readJsonBody(req);
|
||
const opCard = (body.opCard ?? "").toString();
|
||
const btId = (body.btId ?? "").toString();
|
||
const usrId = (body.usrId ?? "").toString();
|
||
const plain = (body.password ?? "");
|
||
const encPass = (body.passwordEnc ?? "");
|
||
if (!opCard || !btId || (!plain && !encPass)) {
|
||
return res.status(400).json({ ok: false, error: "Missing opCard, btId, and either password or passwordEnc" });
|
||
}
|
||
const passwd = encPass ? String(encPass) : encryptPasswordLikeMFC(String(plain)).enc;
|
||
|
||
const sndHeader = packSndHeader({ nTxnCd: LOG, nOpCd: BTI, nNumRecsSent: 1, nNumRecsRqrd: 1, nTxnId: 0, cBtMake: 0 });
|
||
const sndLog = packSndLog({ usrId, opCard, passwd, btId });
|
||
const sendBuf = Buffer.concat([sndHeader, sndLog]);
|
||
|
||
const reply = await withRetry(() => absRoundtrip(sendBuf, DEFAULT_TIMEOUT_MS), RETRIES, RETRY_DELAY_MS);
|
||
|
||
const result = { ok: true, replyBytes: reply.length, replyHexFirst64: reply.subarray(0, 64).toString("hex") };
|
||
|
||
let offset = 0;
|
||
if (remaining(reply, offset) < 18) return res.json({ ok: false, error: "truncated: no header" });
|
||
|
||
const hdr = parseRcvHeaderFlexible(reply.subarray(offset, Math.min(reply.length, offset + 24)));
|
||
result.primaryHeader = hdr;
|
||
|
||
const hdrLenAligned = (hdr.size + 3) & ~3;
|
||
if (!safeAdvanceOrBreak(reply, 0, hdrLenAligned, result)) {
|
||
result.error = "truncated: incomplete header (after alignment)";
|
||
return res.json(result);
|
||
}
|
||
offset = hdrLenAligned;
|
||
|
||
if (hdr.nRetCd !== SUCCESS) {
|
||
result.error = `server returned nRetCd=${hdr.nRetCd}`;
|
||
return res.json(result);
|
||
}
|
||
|
||
if (!safeAdvanceOrBreak(reply, offset, 5 + 31 + 5 + 4 + 1 + 4 + 4 + 4 + 4, result)) {
|
||
result.error = "truncated before BTI master";
|
||
return res.json(result);
|
||
}
|
||
const btiMst = parseRcvBtiMst(reply, offset);
|
||
offset += btiMst.size;
|
||
result.btiMst = btiMst;
|
||
|
||
const details = [];
|
||
let readCount = 0;
|
||
while (readCount < hdr.nNumRecs) {
|
||
if (looksLikeHeaderAt(reply, offset)) break;
|
||
if (!safeAdvanceOrBreak(reply, offset, 1 + 3 + 1, result)) break;
|
||
const dt = parseRcvBtiDtl(reply, offset);
|
||
offset += dt.size;
|
||
details.push(dt);
|
||
readCount++;
|
||
}
|
||
result.btiDetails = details;
|
||
result.btiReadCount = readCount;
|
||
result.parsedBytes = offset;
|
||
|
||
res.json(result);
|
||
} catch (e) {
|
||
res.status(502).json({ ok: false, error: String(e), stack: e.stack });
|
||
}
|
||
});
|
||
|
||
app.post("/download/rpinfo", async (req, res) => {
|
||
try {
|
||
const body = await readJsonBody(req);
|
||
const debug = String((req.query.debug ?? "")).toLowerCase() === "1";
|
||
const opCard = (body.opCard ?? "").toString();
|
||
const btId = (body.btId ?? "").toString();
|
||
const usrId = (body.usrId ?? "").toString();
|
||
const plain = (body.password ?? "");
|
||
const encPass = (body.passwordEnc ?? "");
|
||
|
||
if (!opCard || !btId || (!plain && !encPass)) {
|
||
return res.status(400).json({ ok: false, error: "Missing opCard, btId, and either password or passwordEnc" });
|
||
}
|
||
|
||
const passwd = encPass ? String(encPass) : encryptPasswordLikeMFC(String(plain)).enc;
|
||
const btAdvSalesFlg = body.btAdvSalesFlg || "N";
|
||
const nBtAdvSaleEnb = btAdvSalesFlg === "A" ? 1 : 0;
|
||
|
||
const sndHeader = packSndHeader({ nTxnCd: LOG, nOpCd: RPI, nNumRecsSent: 1, nNumRecsRqrd: nBtAdvSaleEnb, nTxnId: 0, cBtMake: 0 });
|
||
const sndLog = packSndLog({ usrId, opCard, passwd, btId });
|
||
const sendBuf = Buffer.concat([sndHeader, sndLog]);
|
||
|
||
const reply = await withRetry(() => absRoundtrip(sendBuf, DEFAULT_TIMEOUT_MS), RETRIES, RETRY_DELAY_MS);
|
||
|
||
const result = { ok: true, replyBytes: reply.length, replyHexFirst64: reply.subarray(0, 64).toString("hex") };
|
||
let offset = 0;
|
||
|
||
if (remaining(reply, offset) < 18) return res.json({ ok: false, error: "truncated: no top header" });
|
||
const topHdr = parseRcvHeaderFlexible(reply.subarray(offset, Math.min(reply.length, offset + 24)));
|
||
offset += topHdr.size;
|
||
result.topHeader = topHdr;
|
||
|
||
if (topHdr.nRetCd !== SUCCESS) {
|
||
result.error = `server returned nRetCd=${topHdr.nRetCd}`;
|
||
return res.json(result);
|
||
}
|
||
|
||
if (debug) result.debug_afterTopHdr = { offset, hex: hexSlice(reply, offset, 128) };
|
||
|
||
function parseSection(minRecBytes, recParser, outArrName, outHeaderName, expected_nTxnCd) {
|
||
const items = [];
|
||
let read = 0;
|
||
let hdr = null;
|
||
|
||
if (remaining(reply, offset) < 18) {
|
||
result[outArrName] = items;
|
||
result[outHeaderName] = null;
|
||
result[outArrName.replace(/s?$/, "ReadCount")] = read;
|
||
if (debug) result[`debug_${outArrName}_no_data`] = `No data for ${outArrName}, offset=${offset}, remaining=${remaining(reply, offset)}`;
|
||
return items;
|
||
}
|
||
|
||
// Try parsing header
|
||
offset = alignToPossibleHeader(reply, offset, expected_nTxnCd);
|
||
if (looksLikeHeaderAt(reply, offset, expected_nTxnCd)) {
|
||
hdr = parseRcvHeaderFlexible(reply.subarray(offset, Math.min(reply.length, offset + 24)));
|
||
offset += hdr.size;
|
||
const adj = adjustForOptionalOp(reply, offset);
|
||
offset = adj.offset;
|
||
|
||
if (debug) result[`debug_${outArrName}_header`] = { offset, hdr, hex: hexSlice(reply, offset - hdr.size, 64), expected_nTxnCd };
|
||
|
||
while (read < hdr.nNumRecs && remaining(reply, offset) >= minRecBytes) {
|
||
try {
|
||
const rec = recParser(reply, offset);
|
||
if (rec && rec.nRaceDt >= 20000101 && rec.nRaceDt <= 21001231 && rec.cVenueNum >= 1 && rec.cVenueNum <= MAX_VENUES) {
|
||
items.push(rec);
|
||
offset += rec.size;
|
||
read++;
|
||
} else {
|
||
offset += 1;
|
||
if (debug) result[`debug_${outArrName}_invalid`] = `Invalid record at offset ${offset}: ${JSON.stringify(rec)}`;
|
||
}
|
||
} catch (e) {
|
||
if (debug) result[`debug_${outArrName}_error`] = `Error at offset ${offset}: ${e.message}`;
|
||
offset += 1;
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
// Fallback: try parsing data directly if no valid header
|
||
if (remaining(reply, offset) >= minRecBytes) {
|
||
try {
|
||
const rec = recParser(reply, offset);
|
||
if (rec && rec.nRaceDt >= 20000101 && rec.nRaceDt <= 21001231 && rec.cVenueNum >= 1 && rec.cVenueNum <= MAX_VENUES) {
|
||
items.push(rec);
|
||
offset += rec.size;
|
||
read++;
|
||
if (debug) result[`debug_${outArrName}_fallback`] = `Parsed ${outArrName} data without valid header at offset ${offset - rec.size}`;
|
||
} else {
|
||
if (debug) result[`debug_${outArrName}_fallback_invalid`] = `Fallback invalid record at offset ${offset}: ${JSON.stringify(rec)}`;
|
||
}
|
||
} catch (e) {
|
||
if (debug) result[`debug_${outArrName}_fallback_error`] = `Fallback parse error at offset ${offset}: ${e.message}`;
|
||
}
|
||
}
|
||
if (debug) result[`debug_${outArrName}_noheader`] = `No valid header for ${outArrName} at offset ${offset}, expected nTxnCd=${expected_nTxnCd}, hex=${hexSlice(reply, offset, 64)}`;
|
||
}
|
||
|
||
result[outHeaderName] = hdr;
|
||
result[outArrName] = items;
|
||
result[outArrName.replace(/s?$/, "ReadCount")] = read;
|
||
if (debug) result[`debug_${outArrName}_after`] = { offset, hex: hexSlice(reply, offset, 128) };
|
||
return items;
|
||
}
|
||
|
||
// Parse sections with expected nTxnCd
|
||
const sections = [
|
||
{ minRecBytes: 4 + 1 + 1 + 15 + 41, parser: parseRcvRpi1, arrName: "rpi1", headerName: "rpi1Header", nTxnCd: 101 },
|
||
{ minRecBytes: 4 + 1 + 1 + 25 + 4, parser: parseRcvRpi2, arrName: "rpi2", headerName: "rpi2Header", nTxnCd: 102 },
|
||
{ minRecBytes: 4 + 1 + 1 + 9, parser: parseRcvRpi3, arrName: "rpi3", headerName: "rpi3Header", nTxnCd: 103 },
|
||
{ minRecBytes: 4 + 1 + 3 + 11 + 1, parser: parseRcvRpi4, arrName: "rpi4", headerName: "rpi4Header", nTxnCd: 104 },
|
||
{ minRecBytes: 4 + 4 + 4 + 4 + 4 + 31, parser: parseRcvPvm, arrName: "pvms", headerName: "pvmHeader", nTxnCd: 105 }
|
||
];
|
||
|
||
for (const section of sections) {
|
||
parseSection(section.minRecBytes, section.parser, section.arrName, section.headerName, section.nTxnCd);
|
||
}
|
||
|
||
result.parsedBytes = offset;
|
||
|
||
// Build raceCard
|
||
const raceCard = [];
|
||
for (const v of result.rpi1 || []) {
|
||
const raceDate = getDateStr(v.nRaceDt);
|
||
const venueId = getVenueIdStr(v.cVenueNum);
|
||
const venueSts = v.cVenueSts;
|
||
|
||
for (let nRace = 0; nRace < MAX_RACES; nRace++) {
|
||
if (v.cRaces[nRace] === "0" || !v.cRaces[nRace]) continue;
|
||
const raceNum = (nRace + 1).toString().padStart(2, "0");
|
||
raceCard.push({
|
||
RACE_DATE: raceDate,
|
||
RACE_VENUE_ID: venueId,
|
||
RACE_NO: raceNum,
|
||
STOPBET_STATUS: v.cRaces[nRace] === "C" ? "S" : v.cRaces[nRace],
|
||
RACE_STATUS: v.cRaces[nRace] === "C" ? "C" : "V",
|
||
VENUE_STATUS: venueSts,
|
||
START_TIME: "",
|
||
ADVT: v.cAdvertisement,
|
||
horses: [],
|
||
pools: []
|
||
});
|
||
}
|
||
}
|
||
|
||
for (const r of result.rpi2 || []) {
|
||
const raceDate = getDateStr(r.nRaceDt);
|
||
const venueId = getVenueIdStr(r.cVenueNum);
|
||
const raceNum = r.cRaceNum.toString().padStart(2, "0");
|
||
|
||
for (let nHorse = 0; nHorse < MAX_HORSES; nHorse++) {
|
||
if (r.cHorses[nHorse] === "0" || !r.cHorses[nHorse]) continue;
|
||
const horseNum = (nHorse + 1).toString().padStart(2, "0");
|
||
const entry = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId && e.RACE_NO === raceNum);
|
||
if (entry) {
|
||
entry.horses.push({
|
||
RACE_HORSE_NO: horseNum,
|
||
HORSE_STATUS: r.cHorses[nHorse],
|
||
REFUND_FILE_STATUS: ""
|
||
});
|
||
if (!entry.START_TIME) {
|
||
entry.START_TIME = getTimeStr(r.nRaceStartTm);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
for (const p of result.rpi3 || []) {
|
||
const raceDate = getDateStr(p.nRaceDt);
|
||
const venueId = getVenueIdStr(p.cVenueNum);
|
||
const raceNum = p.cRaceNum.toString().padStart(2, "0");
|
||
|
||
for (let nPoolId = 0; nPoolId < MAX_POOLS; nPoolId++) {
|
||
if (p.cPools[nPoolId] === "0" || !p.cPools[nPoolId]) continue;
|
||
const entry = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId && e.RACE_NO === raceNum);
|
||
if (entry) {
|
||
entry.pools.push({
|
||
POOL_ID: getPoolIdStr(nPoolId + 1),
|
||
POOL_STATUS: p.cPools[nPoolId],
|
||
BETTING_CENTRE_ID: "",
|
||
SELECT_RACE_NO: ""
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
for (const s of result.rpi4 || []) {
|
||
const raceDate = getDateStr(s.nRaceDt);
|
||
const venueId = getVenueIdStr(s.cVenueNum);
|
||
const raceNum = s.cRaceNum;
|
||
const venueSts = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId)?.VENUE_STATUS || "V";
|
||
|
||
let entry = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId && e.RACE_NO === raceNum);
|
||
if (!entry) {
|
||
entry = {
|
||
RACE_DATE: raceDate,
|
||
RACE_VENUE_ID: venueId,
|
||
RACE_NO: raceNum,
|
||
STOPBET_STATUS: "",
|
||
RACE_STATUS: s.cPoolSts,
|
||
VENUE_STATUS: venueSts,
|
||
START_TIME: "",
|
||
ADVT: "",
|
||
horses: [],
|
||
pools: []
|
||
};
|
||
raceCard.push(entry);
|
||
}
|
||
|
||
entry.pools.push({
|
||
POOL_ID: getMultiLegPoolIdStr(s.cRaceNum),
|
||
POOL_STATUS: s.cPoolSts,
|
||
BETTING_CENTRE_ID: "",
|
||
SELECT_RACE_NO: s.cSelectRaceNum
|
||
});
|
||
}
|
||
|
||
for (const p of result.rpi3 || []) {
|
||
if (!p.cPools.includes("TBP") && !p.cPools.includes("MJP") && !p.cPools.includes("JPP")) continue;
|
||
const raceDate = getDateStr(p.nRaceDt);
|
||
const venueId = getVenueIdStr(p.cVenueNum);
|
||
const raceNum = p.cRaceNum.toString().padStart(2, "0");
|
||
|
||
for (const s of result.rpi4 || []) {
|
||
if (s.cSelectRaceNum && s.nRaceDt === p.nRaceDt && s.cVenueNum === p.cVenueNum) {
|
||
const selectRaceNum = s.cSelectRaceNum.slice(0, 2);
|
||
const selectEntry = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId && e.RACE_NO === selectRaceNum);
|
||
const targetEntry = raceCard.find(e => e.RACE_DATE === raceDate && e.RACE_VENUE_ID === venueId && e.RACE_NO === raceNum);
|
||
if (selectEntry && targetEntry) {
|
||
targetEntry.STOPBET_STATUS = selectEntry.STOPBET_STATUS;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
const pvmData = (result.pvms || []).map(p => ({
|
||
RACE_VENUE: p.cRaceVenue,
|
||
POOL_ID: p.cPoolId,
|
||
UNIT_PRICE: p.fUnitPrice,
|
||
TAX_RATE: p.fTaxRate,
|
||
DEDUCT_RATE: p.fDeductRate,
|
||
REMARKS: p.cRemarks
|
||
}));
|
||
|
||
result.raceCard = raceCard;
|
||
result.pvm = pvmData;
|
||
|
||
res.json(result);
|
||
} catch (e) {
|
||
res.status(502).json({ ok: false, error: String(e), stack: e.stack });
|
||
}
|
||
});
|
||
|
||
const HTTP_PORT = Number(process.env.HTTP_BRIDGE_PORT || 8080);
|
||
app.listen(HTTP_PORT, () => {
|
||
console.log(`ABS HTTP bridge listening on :${HTTP_PORT}`);
|
||
console.log(`Target ABS server: ${ABS_HOST}:${ABS_PORT}`);
|
||
});
|