mirror of
https://github.com/missuo/FreeGPT35.git
synced 2025-10-13 22:10:56 +00:00
294 lines
8.2 KiB
JavaScript
294 lines
8.2 KiB
JavaScript
const express = require("express");
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const bodyParser = require("body-parser");
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const axios = require("axios");
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const https = require("https");
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const { randomUUID } = require("crypto");
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// Constants for the server and API configuration
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const port = 3040;
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const baseUrl = "https://chat.openai.com";
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const apiUrl = `${baseUrl}/backend-api/conversation`;
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const refreshInterval = 60000; // Interval to refresh token in ms
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const errorWait = 120000; // Wait time in ms after an error
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// Initialize global variables to store the session token and device ID
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let token;
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let oaiDeviceId;
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// Function to wait for a specified duration
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const wait = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
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function GenerateCompletionId(prefix = "cmpl-") {
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const characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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const length = 28;
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for (let i = 0; i < length; i++) {
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prefix += characters.charAt(Math.floor(Math.random() * characters.length));
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}
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return prefix;
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}
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async function* chunksToLines(chunksAsync) {
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let previous = "";
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for await (const chunk of chunksAsync) {
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const bufferChunk = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk);
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previous += bufferChunk;
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let eolIndex;
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while ((eolIndex = previous.indexOf("\n")) >= 0) {
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// line includes the EOL
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const line = previous.slice(0, eolIndex + 1).trimEnd();
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if (line === "data: [DONE]") break;
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if (line.startsWith("data: ")) yield line;
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previous = previous.slice(eolIndex + 1);
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}
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}
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}
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async function* linesToMessages(linesAsync) {
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for await (const line of linesAsync) {
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const message = line.substring("data :".length);
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yield message;
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}
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}
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async function* StreamCompletion(data) {
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yield* linesToMessages(chunksToLines(data));
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}
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// Setup axios instance for API requests with predefined configurations
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const axiosInstance = axios.create({
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httpsAgent: new https.Agent({ rejectUnauthorized: false }),
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headers: {
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accept: "*/*",
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"accept-language": "en-US,en;q=0.9",
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"cache-control": "no-cache",
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"content-type": "application/json",
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"oai-language": "en-US",
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origin: baseUrl,
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pragma: "no-cache",
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referer: baseUrl,
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"sec-ch-ua": '"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"',
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"sec-ch-ua-mobile": "?0",
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"sec-ch-ua-platform": '"Windows"',
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"sec-fetch-dest": "empty",
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"sec-fetch-mode": "cors",
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"sec-fetch-site": "same-origin",
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"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36",
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},
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});
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// Function to get a new session ID and token from the OpenAI API
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async function getNewSessionId() {
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let newDeviceId = randomUUID();
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const response = await axiosInstance.post(
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`${baseUrl}/backend-anon/sentinel/chat-requirements`,
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{},
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{
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headers: { "oai-device-id": newDeviceId },
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}
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);
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console.log(`System: Successfully refreshed session ID and token. ${!token ? "(Now it's ready to process requests)" : ""}`);
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oaiDeviceId = newDeviceId;
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token = response.data.token;
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// console.log("New Token:", token);
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// console.log("New Device ID:", oaiDeviceId);
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}
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// Middleware to enable CORS and handle pre-flight requests
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function enableCORS(req, res, next) {
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res.header("Access-Control-Allow-Origin", "*");
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res.header("Access-Control-Allow-Headers", "*");
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res.header("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
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if (req.method === "OPTIONS") {
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return res.status(200).end();
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}
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next();
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}
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// Middleware to handle chat completions
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async function handleChatCompletion(req, res) {
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console.log("Request:", `${req.method} ${req.originalUrl}`, `${(req.body?.messages?.length || 0)} messages`, req.body.stream ? "(stream-enabled)" : "(stream-disabled)");
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try {
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const body = {
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action: "next",
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messages: req.body.messages.map((message) => ({
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author: { role: message.role },
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content: { content_type: "text", parts: [message.content] },
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})),
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parent_message_id: randomUUID(),
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model: "text-davinci-002-render-sha",
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timezone_offset_min: -180,
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suggestions: [],
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history_and_training_disabled: true,
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conversation_mode: { kind: "primary_assistant" },
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websocket_request_id: randomUUID(),
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};
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const response = await axiosInstance.post(apiUrl, body, {
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responseType: "stream",
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headers: {
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"oai-device-id": oaiDeviceId,
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"openai-sentinel-chat-requirements-token": token,
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},
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});
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// Set the response headers based on the request type
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if (req.body.stream) {
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res.setHeader("Content-Type", "text/event-stream");
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res.setHeader("Cache-Control", "no-cache");
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res.setHeader("Connection", "keep-alive");
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} else {
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res.setHeader("Content-Type", "application/json");
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}
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let fullContent = "";
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let requestId = GenerateCompletionId("chatcmpl-");
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let created = Date.now();
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for await (const message of StreamCompletion(response.data)) {
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const parsed = JSON.parse(message);
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let content = parsed?.message?.content?.parts[0] || "";
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for (let message of req.body.messages) {
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if (message.content === content) {
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content = "";
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break;
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}
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}
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if (content === "") continue;
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if (req.body.stream) {
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let response = {
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id: requestId,
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created: created,
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object: "chat.completion.chunk",
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model: "gpt-3.5-turbo",
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choices: [
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{
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delta: {
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content: content.replace(fullContent, ""),
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},
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index: 0,
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finish_reason: null,
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},
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],
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};
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res.write(`data: ${JSON.stringify(response)}\n\n`);
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}
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fullContent = content.length > fullContent.length ? content : fullContent;
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}
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if (req.body.stream) {
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res.write(
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`data: ${JSON.stringify({
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id: requestId,
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created: created,
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object: "chat.completion.chunk",
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model: "gpt-3.5-turbo",
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choices: [
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{
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delta: {
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content: "",
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},
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index: 0,
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finish_reason: "stop",
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},
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],
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})}\n\n`
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);
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} else {
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res.write(
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JSON.stringify({
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id: requestId,
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created: created,
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model: "gpt-3.5-turbo",
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object: "chat.completion",
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choices: [
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{
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finish_reason: "stop",
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index: 0,
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message: {
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content: fullContent,
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role: "assistant",
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},
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},
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],
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usage: {
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prompt_tokens: 0,
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completion_tokens: 0,
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total_tokens: 0,
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},
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})
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);
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}
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res.end();
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} catch (error) {
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// console.log('Error:', error.response?.data ?? error.message);
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if (!res.headersSent) res.setHeader("Content-Type", "application/json");
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// console.error('Error handling chat completion:', error);
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res.write(
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JSON.stringify({
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status: false,
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error: {
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message: "An error happened, please make sure your request is SFW, or use a jailbreak to bypass the filter.",
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type: "invalid_request_error",
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},
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})
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);
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res.end();
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}
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}
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// Initialize Express app and use middlewares
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const app = express();
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app.use(bodyParser.json());
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app.use(enableCORS);
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// Route to handle POST requests for chat completions
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app.post("/v1/chat/completions", handleChatCompletion);
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// 404 handler for unmatched routes
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app.use((req, res) =>
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res.status(404).send({
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status: false,
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error: {
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message: `The requested endpoint was not found. please make sure to use "http://localhost:3040/v1" as the base URL.`,
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type: "invalid_request_error",
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},
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})
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);
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// Start the server and the session ID refresh loop
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app.listen(port, () => {
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console.log(`💡 Server is running at http://localhost:${port}`);
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console.log();
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console.log(`🔗 Base URL: http://localhost:${port}/v1`);
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console.log(`🔗 ChatCompletion Endpoint: http://localhost:${port}/v1/chat/completions`);
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console.log();
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console.log("📝 Original TS Source By: Pawan.Krd");
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console.log("📝 Modified Into JavaScript By: Adam");
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console.log();
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setTimeout(async () => {
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while (true) {
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try {
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await getNewSessionId();
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await wait(refreshInterval);
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} catch (error) {
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console.error("Error refreshing session ID, retrying in 1 minute...");
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console.error("If this error persists, your country may not be supported yet.");
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console.error("If your country was the issue, please consider using a U.S. VPN.");
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await wait(errorWait);
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}
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}
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}, 0);
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});
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