SillyTavern/server.js

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JavaScript
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#!/usr/bin/env node
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// native node modules
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const crypto = require('crypto');
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const fs = require('fs');
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const http = require('http');
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const https = require('https');
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const path = require('path');
const util = require('util');
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// cli/fs related library imports
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const open = require('open');
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const sanitize = require('sanitize-filename');
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const writeFileAtomicSync = require('write-file-atomic').sync;
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const yargs = require('yargs/yargs');
const { hideBin } = require('yargs/helpers');
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// express/server related library imports
const cors = require('cors');
const doubleCsrf = require('csrf-csrf').doubleCsrf;
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const express = require('express');
const compression = require('compression');
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const cookieParser = require('cookie-parser');
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const multer = require('multer');
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const responseTime = require('response-time');
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// net related library imports
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const net = require('net');
const dns = require('dns');
const fetch = require('node-fetch').default;
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// image processing related library imports
const jimp = require('jimp');
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// Unrestrict console logs display limit
util.inspect.defaultOptions.maxArrayLength = null;
util.inspect.defaultOptions.maxStringLength = null;
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// local library imports
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const basicAuthMiddleware = require('./src/middleware/basicAuth');
const whitelistMiddleware = require('./src/middleware/whitelist');
const { jsonParser, urlencodedParser } = require('./src/express-common.js');
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const contentManager = require('./src/endpoints/content-manager');
const {
getVersion,
getConfigValue,
color,
tryParse,
clientRelativePath,
removeFileExtension,
getImages,
forwardFetchResponse,
} = require('./src/util');
const { ensureThumbnailCache } = require('./src/endpoints/thumbnails');
const { loadTokenizers } = require('./src/endpoints/tokenizers');
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// Work around a node v20.0.0, v20.1.0, and v20.2.0 bug. The issue was fixed in v20.3.0.
// https://github.com/nodejs/node/issues/47822#issuecomment-1564708870
// Safe to remove once support for Node v20 is dropped.
if (process.versions && process.versions.node && process.versions.node.match(/20\.[0-2]\.0/)) {
// @ts-ignore
if (net.setDefaultAutoSelectFamily) net.setDefaultAutoSelectFamily(false);
}
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// Set default DNS resolution order to IPv4 first
dns.setDefaultResultOrder('ipv4first');
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const cliArguments = yargs(hideBin(process.argv))
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.option('autorun', {
type: 'boolean',
default: false,
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describe: 'Automatically launch SillyTavern in the browser.',
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}).option('corsProxy', {
type: 'boolean',
default: false,
describe: 'Enables CORS proxy',
}).option('disableCsrf', {
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type: 'boolean',
default: false,
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describe: 'Disables CSRF protection',
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}).option('ssl', {
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type: 'boolean',
default: false,
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describe: 'Enables SSL',
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}).option('certPath', {
type: 'string',
default: 'certs/cert.pem',
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describe: 'Path to your certificate file.',
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}).option('keyPath', {
type: 'string',
default: 'certs/privkey.pem',
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describe: 'Path to your private key file.',
}).parseSync();
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// change all relative paths
const directory = process['pkg'] ? path.dirname(process.execPath) : __dirname;
console.log(process['pkg'] ? 'Running from binary' : 'Running from source');
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process.chdir(directory);
const app = express();
app.use(compression());
app.use(responseTime());
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const server_port = process.env.SILLY_TAVERN_PORT || getConfigValue('port', 8000);
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const autorun = (getConfigValue('autorun', false) || cliArguments.autorun) && !cliArguments.ssl;
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const listen = getConfigValue('listen', false);
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const { DIRECTORIES, UPLOADS_PATH, AVATAR_WIDTH, AVATAR_HEIGHT } = require('./src/constants');
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// CORS Settings //
const CORS = cors({
origin: 'null',
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methods: ['OPTIONS'],
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});
app.use(CORS);
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if (listen && getConfigValue('basicAuthMode', false)) app.use(basicAuthMiddleware);
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app.use(whitelistMiddleware);
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// CSRF Protection //
if (!cliArguments.disableCsrf) {
const CSRF_SECRET = crypto.randomBytes(8).toString('hex');
const COOKIES_SECRET = crypto.randomBytes(8).toString('hex');
const { generateToken, doubleCsrfProtection } = doubleCsrf({
getSecret: () => CSRF_SECRET,
cookieName: 'X-CSRF-Token',
cookieOptions: {
httpOnly: true,
sameSite: 'strict',
secure: false,
},
size: 64,
getTokenFromRequest: (req) => req.headers['x-csrf-token'],
});
app.get('/csrf-token', (req, res) => {
res.json({
'token': generateToken(res, req),
});
});
app.use(cookieParser(COOKIES_SECRET));
app.use(doubleCsrfProtection);
} else {
console.warn('\nCSRF protection is disabled. This will make your server vulnerable to CSRF attacks.\n');
app.get('/csrf-token', (req, res) => {
res.json({
'token': 'disabled',
});
});
}
if (getConfigValue('enableCorsProxy', false) || cliArguments.corsProxy) {
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const bodyParser = require('body-parser');
app.use(bodyParser.json({
limit: '200mb',
}));
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console.log('Enabling CORS proxy');
app.use('/proxy/:url(*)', async (req, res) => {
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const url = req.params.url; // get the url from the request path
// Disallow circular requests
const serverUrl = req.protocol + '://' + req.get('host');
if (url.startsWith(serverUrl)) {
return res.status(400).send('Circular requests are not allowed');
}
try {
const headers = JSON.parse(JSON.stringify(req.headers));
delete headers['x-csrf-token'];
delete headers['host'];
delete headers['referer'];
delete headers['origin'];
delete headers['cookie'];
delete headers['sec-fetch-mode'];
delete headers['sec-fetch-site'];
delete headers['sec-fetch-dest'];
const bodyMethods = ['POST', 'PUT', 'PATCH'];
const response = await fetch(url, {
method: req.method,
headers: headers,
body: bodyMethods.includes(req.method) ? JSON.stringify(req.body) : undefined,
});
// Copy over relevant response params to the proxy response
forwardFetchResponse(response, res);
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} catch (error) {
res.status(500).send('Error occurred while trying to proxy to: ' + url + ' ' + error);
}
});
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} else {
app.use('/proxy/:url(*)', async (_, res) => {
const message = 'CORS proxy is disabled. Enable it in config.yaml or use the --corsProxy flag.';
console.log(message);
res.status(404).send(message);
});
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}
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app.use(express.static(process.cwd() + '/public', {}));
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app.use('/backgrounds', (req, res) => {
const filePath = decodeURIComponent(path.join(process.cwd(), 'public/backgrounds', req.url.replace(/%20/g, ' ')));
fs.readFile(filePath, (err, data) => {
if (err) {
res.status(404).send('File not found');
return;
}
//res.contentType('image/jpeg');
res.send(data);
});
});
app.use('/characters', (req, res) => {
const filePath = decodeURIComponent(path.join(process.cwd(), DIRECTORIES.characters, req.url.replace(/%20/g, ' ')));
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fs.readFile(filePath, (err, data) => {
if (err) {
res.status(404).send('File not found');
return;
}
res.send(data);
});
});
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app.use(multer({ dest: UPLOADS_PATH, limits: { fieldSize: 10 * 1024 * 1024 } }).single('avatar'));
app.get('/', function (request, response) {
response.sendFile(process.cwd() + '/public/index.html');
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});
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app.get('/version', async function (_, response) {
const data = await getVersion();
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response.send(data);
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});
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app.post('/getuseravatars', jsonParser, function (request, response) {
var images = getImages('public/User Avatars');
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response.send(JSON.stringify(images));
});
app.post('/deleteuseravatar', jsonParser, function (request, response) {
if (!request.body) return response.sendStatus(400);
if (request.body.avatar !== sanitize(request.body.avatar)) {
console.error('Malicious avatar name prevented');
return response.sendStatus(403);
}
const fileName = path.join(DIRECTORIES.avatars, sanitize(request.body.avatar));
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if (fs.existsSync(fileName)) {
fs.rmSync(fileName);
return response.send({ result: 'ok' });
}
return response.sendStatus(404);
});
app.post('/savetheme', jsonParser, (request, response) => {
if (!request.body || !request.body.name) {
return response.sendStatus(400);
}
const filename = path.join(DIRECTORIES.themes, sanitize(request.body.name) + '.json');
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writeFileAtomicSync(filename, JSON.stringify(request.body, null, 4), 'utf8');
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return response.sendStatus(200);
});
app.post('/savemovingui', jsonParser, (request, response) => {
if (!request.body || !request.body.name) {
return response.sendStatus(400);
}
const filename = path.join(DIRECTORIES.movingUI, sanitize(request.body.name) + '.json');
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writeFileAtomicSync(filename, JSON.stringify(request.body, null, 4), 'utf8');
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return response.sendStatus(200);
});
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app.post('/savequickreply', jsonParser, (request, response) => {
if (!request.body || !request.body.name) {
return response.sendStatus(400);
}
const filename = path.join(DIRECTORIES.quickreplies, sanitize(request.body.name) + '.json');
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writeFileAtomicSync(filename, JSON.stringify(request.body, null, 4), 'utf8');
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return response.sendStatus(200);
});
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app.post('/uploaduseravatar', urlencodedParser, async (request, response) => {
if (!request.file) return response.sendStatus(400);
try {
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const pathToUpload = path.join(UPLOADS_PATH, request.file.filename);
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const crop = tryParse(request.query.crop);
let rawImg = await jimp.read(pathToUpload);
if (typeof crop == 'object' && [crop.x, crop.y, crop.width, crop.height].every(x => typeof x === 'number')) {
rawImg = rawImg.crop(crop.x, crop.y, crop.width, crop.height);
}
const image = await rawImg.cover(AVATAR_WIDTH, AVATAR_HEIGHT).getBufferAsync(jimp.MIME_PNG);
const filename = request.body.overwrite_name || `${Date.now()}.png`;
const pathToNewFile = path.join(DIRECTORIES.avatars, filename);
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writeFileAtomicSync(pathToNewFile, image);
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fs.rmSync(pathToUpload);
return response.send({ path: filename });
} catch (err) {
return response.status(400).send('Is not a valid image');
}
});
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/**
* Ensure the directory for the provided file path exists.
* If not, it will recursively create the directory.
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*
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* @param {string} filePath - The full path of the file for which the directory should be ensured.
*/
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function ensureDirectoryExistence(filePath) {
const dirname = path.dirname(filePath);
if (fs.existsSync(dirname)) {
return true;
}
ensureDirectoryExistence(dirname);
fs.mkdirSync(dirname);
}
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/**
* Endpoint to handle image uploads.
* The image should be provided in the request body in base64 format.
* Optionally, a character name can be provided to save the image in a sub-folder.
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*
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* @route POST /uploadimage
* @param {Object} request.body - The request payload.
* @param {string} request.body.image - The base64 encoded image data.
* @param {string} [request.body.ch_name] - Optional character name to determine the sub-directory.
* @returns {Object} response - The response object containing the path where the image was saved.
*/
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app.post('/uploadimage', jsonParser, async (request, response) => {
// Check for image data
if (!request.body || !request.body.image) {
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return response.status(400).send({ error: 'No image data provided' });
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}
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try {
// Extracting the base64 data and the image format
const splitParts = request.body.image.split(',');
const format = splitParts[0].split(';')[0].split('/')[1];
const base64Data = splitParts[1];
const validFormat = ['png', 'jpg', 'webp', 'jpeg', 'gif'].includes(format);
if (!validFormat) {
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return response.status(400).send({ error: 'Invalid image format' });
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}
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// Constructing filename and path
let filename;
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if (request.body.filename) {
filename = `${removeFileExtension(request.body.filename)}.${format}`;
} else {
filename = `${Date.now()}.${format}`;
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}
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// if character is defined, save to a sub folder for that character
let pathToNewFile = path.join(DIRECTORIES.userImages, filename);
if (request.body.ch_name) {
pathToNewFile = path.join(DIRECTORIES.userImages, request.body.ch_name, filename);
}
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ensureDirectoryExistence(pathToNewFile);
const imageBuffer = Buffer.from(base64Data, 'base64');
await fs.promises.writeFile(pathToNewFile, imageBuffer);
response.send({ path: clientRelativePath(pathToNewFile) });
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} catch (error) {
console.log(error);
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response.status(500).send({ error: 'Failed to save the image' });
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}
});
app.post('/listimgfiles/:folder', (req, res) => {
const directoryPath = path.join(process.cwd(), 'public/user/images/', sanitize(req.params.folder));
if (!fs.existsSync(directoryPath)) {
fs.mkdirSync(directoryPath, { recursive: true });
}
try {
const images = getImages(directoryPath);
return res.send(images);
} catch (error) {
console.error(error);
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return res.status(500).send({ error: 'Unable to retrieve files' });
}
});
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function cleanUploads() {
try {
if (fs.existsSync(UPLOADS_PATH)) {
const uploads = fs.readdirSync(UPLOADS_PATH);
if (!uploads.length) {
return;
}
console.debug(`Cleaning uploads folder (${uploads.length} files)`);
uploads.forEach(file => {
const pathToFile = path.join(UPLOADS_PATH, file);
fs.unlinkSync(pathToFile);
});
}
} catch (err) {
console.error(err);
}
}
/**
* Redirect a deprecated API endpoint URL to its replacement. Because fetch, form submissions, and $.ajax follow
* redirects, this is transparent to client-side code.
* @param {string} src The URL to redirect from.
* @param {string} destination The URL to redirect to.
*/
function redirect(src, destination) {
app.use(src, (req, res) => {
console.warn(`API endpoint ${src} is deprecated; use ${destination} instead`);
// HTTP 301 causes the request to become a GET. 308 preserves the request method.
res.redirect(308, destination);
});
}
// Redirect deprecated character API endpoints
redirect('/createcharacter', '/api/characters/create');
redirect('/renamecharacter', '/api/characters/rename');
redirect('/editcharacter', '/api/characters/edit');
redirect('/editcharacterattribute', '/api/characters/edit-attribute');
redirect('/v2/editcharacterattribute', '/api/characters/merge-attributes');
redirect('/deletecharacter', '/api/characters/delete');
redirect('/getcharacters', '/api/characters/all');
redirect('/getonecharacter', '/api/characters/get');
redirect('/getallchatsofcharacter', '/api/characters/chats');
redirect('/importcharacter', '/api/characters/import');
redirect('/dupecharacter', '/api/characters/duplicate');
redirect('/exportcharacter', '/api/characters/export');
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// Redirect deprecated chat API endpoints
redirect('/savechat', '/api/chats/save');
redirect('/getchat', '/api/chats/get');
redirect('/renamechat', '/api/chats/rename');
redirect('/delchat', '/api/chats/delete');
redirect('/exportchat', '/api/chats/export');
redirect('/importgroupchat', '/api/chats/group/import');
redirect('/importchat', '/api/chats/import');
redirect('/getgroupchat', '/api/chats/group/get');
redirect('/deletegroupchat', '/api/chats/group/delete');
redirect('/savegroupchat', '/api/chats/group/save');
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// Redirect deprecated group API endpoints
redirect('/getgroups', '/api/groups/all');
redirect('/creategroup', '/api/groups/create');
redirect('/editgroup', '/api/groups/edit');
redirect('/deletegroup', '/api/groups/delete');
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// Redirect deprecated worldinfo API endpoints
redirect('/getworldinfo', '/api/worldinfo/get');
redirect('/deleteworldinfo', '/api/worldinfo/delete');
redirect('/importworldinfo', '/api/worldinfo/import');
redirect('/editworldinfo', '/api/worldinfo/edit');
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// Redirect deprecated stats API endpoints
redirect('/getstats', '/api/stats/get');
redirect('/recreatestats', '/api/stats/recreate');
redirect('/updatestats', '/api/stats/update');
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// Redirect deprecated backgrounds API endpoints
redirect('/getbackgrounds', '/api/backgrounds/all');
redirect('/delbackground', '/api/backgrounds/delete');
redirect('/renamebackground', '/api/backgrounds/rename');
redirect('/downloadbackground', '/api/backgrounds/upload'); // yes, the downloadbackground endpoint actually uploads one
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// OpenAI API
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app.use('/api/openai', require('./src/endpoints/openai').router);
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//Google API
app.use('/api/google', require('./src/endpoints/google').router);
// Tokenizers
app.use('/api/tokenizers', require('./src/endpoints/tokenizers').router);
// Preset management
app.use('/api/presets', require('./src/endpoints/presets').router);
// Secrets managemenet
app.use('/api/secrets', require('./src/endpoints/secrets').router);
// Thumbnail generation. These URLs are saved in chat, so this route cannot be renamed!
app.use('/thumbnail', require('./src/endpoints/thumbnails').router);
// NovelAI generation
app.use('/api/novelai', require('./src/endpoints/novelai').router);
// Third-party extensions
app.use('/api/extensions', require('./src/endpoints/extensions').router);
// Asset management
app.use('/api/assets', require('./src/endpoints/assets').router);
// File management
app.use('/api/files', require('./src/endpoints/files').router);
// Character management
app.use('/api/characters', require('./src/endpoints/characters').router);
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// Chat management
app.use('/api/chats', require('./src/endpoints/chats').router);
// Group management
app.use('/api/groups', require('./src/endpoints/groups').router);
// World info management
app.use('/api/worldinfo', require('./src/endpoints/worldinfo').router);
// Stats calculation
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const statsEndpoint = require('./src/endpoints/stats');
app.use('/api/stats', statsEndpoint.router);
// Background management
app.use('/api/backgrounds', require('./src/endpoints/backgrounds').router);
// Character sprite management
app.use('/api/sprites', require('./src/endpoints/sprites').router);
// Custom content management
app.use('/api/content', require('./src/endpoints/content-manager').router);
// Settings load/store
const settingsEndpoint = require('./src/endpoints/settings');
app.use('/api/settings', settingsEndpoint.router);
// Stable Diffusion generation
app.use('/api/sd', require('./src/endpoints/stable-diffusion').router);
// LLM and SD Horde generation
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app.use('/api/horde', require('./src/endpoints/horde').router);
// Vector storage DB
app.use('/api/vector', require('./src/endpoints/vectors').router);
// Chat translation
app.use('/api/translate', require('./src/endpoints/translate').router);
// Emotion classification
app.use('/api/extra/classify', require('./src/endpoints/classify').router);
// Image captioning
app.use('/api/extra/caption', require('./src/endpoints/caption').router);
// Web search extension
app.use('/api/serpapi', require('./src/endpoints/serpapi').router);
// The different text generation APIs
// Ooba/OpenAI text completions
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app.use('/api/backends/text-completions', require('./src/endpoints/backends/text-completions').router);
// KoboldAI
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app.use('/api/backends/kobold', require('./src/endpoints/backends/kobold').router);
// OpenAI chat completions
app.use('/api/backends/chat-completions', require('./src/endpoints/backends/chat-completions').router);
// Scale (alt method)
app.use('/api/backends/scale-alt', require('./src/endpoints/backends/scale-alt').router);
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const tavernUrl = new URL(
(cliArguments.ssl ? 'https://' : 'http://') +
(listen ? '0.0.0.0' : '127.0.0.1') +
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(':' + server_port),
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);
const autorunUrl = new URL(
(cliArguments.ssl ? 'https://' : 'http://') +
('127.0.0.1') +
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(':' + server_port),
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);
const setupTasks = async function () {
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const version = await getVersion();
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console.log(`SillyTavern ${version.pkgVersion}` + (version.gitBranch ? ` '${version.gitBranch}' (${version.gitRevision})` : ''));
// TODO: do endpoint init functions depend on certain directories existing or not existing? They should be callable
// in any order for encapsulation reasons, but right now it's unknown if that would break anything.
await settingsEndpoint.init();
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ensurePublicDirectoriesExist();
await ensureThumbnailCache();
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contentManager.checkForNewContent();
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cleanUploads();
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await loadTokenizers();
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await statsEndpoint.init();
const exitProcess = () => {
statsEndpoint.onExit();
process.exit();
};
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// Set up event listeners for a graceful shutdown
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process.on('SIGINT', exitProcess);
process.on('SIGTERM', exitProcess);
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process.on('uncaughtException', (err) => {
console.error('Uncaught exception:', err);
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exitProcess();
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});
console.log('Launching...');
if (autorun) open(autorunUrl.toString());
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console.log(color.green('SillyTavern is listening on: ' + tavernUrl));
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if (listen) {
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console.log('\n0.0.0.0 means SillyTavern is listening on all network interfaces (Wi-Fi, LAN, localhost). If you want to limit it only to internal localhost (127.0.0.1), change the setting in config.yaml to "listen: false". Check "access.log" file in the SillyTavern directory if you want to inspect incoming connections.\n');
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}
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};
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if (listen && !getConfigValue('whitelistMode', true) && !getConfigValue('basicAuthMode', false)) {
if (getConfigValue('securityOverride', false)) {
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console.warn(color.red('Security has been overridden. If it\'s not a trusted network, change the settings.'));
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}
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else {
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console.error(color.red('Your SillyTavern is currently unsecurely open to the public. Enable whitelisting or basic authentication.'));
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process.exit(1);
}
}
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if (cliArguments.ssl) {
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https.createServer(
{
cert: fs.readFileSync(cliArguments.certPath),
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key: fs.readFileSync(cliArguments.keyPath),
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}, app)
.listen(
Number(tavernUrl.port) || 443,
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tavernUrl.hostname,
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setupTasks,
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);
} else {
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http.createServer(app).listen(
Number(tavernUrl.port) || 80,
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tavernUrl.hostname,
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setupTasks,
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);
}
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function ensurePublicDirectoriesExist() {
for (const dir of Object.values(DIRECTORIES)) {
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if (!fs.existsSync(dir)) {
fs.mkdirSync(dir, { recursive: true });
}
}
}