File size: 4,309 Bytes
9038ca8 34e385a 9038ca8 34e385a 9038ca8 34e385a 9038ca8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | import { createReadStream } from 'node:fs'
import { stat } from 'node:fs/promises'
import { createServer } from 'node:http'
import { extname, join, normalize, resolve } from 'node:path'
import { fileURLToPath } from 'node:url'
const __dirname = fileURLToPath(new URL('.', import.meta.url))
const distDir = resolve(__dirname, 'dist')
const port = Number(process.env.PORT || 7860)
const host = process.env.HOST || '0.0.0.0'
const mimeTypes = new Map([
['.html', 'text/html; charset=utf-8'],
['.js', 'text/javascript; charset=utf-8'],
['.css', 'text/css; charset=utf-8'],
['.json', 'application/json; charset=utf-8'],
['.png', 'image/png'],
['.jpg', 'image/jpeg'],
['.jpeg', 'image/jpeg'],
['.ico', 'image/x-icon'],
['.svg', 'image/svg+xml'],
['.webp', 'image/webp'],
['.woff', 'font/woff'],
['.woff2', 'font/woff2']
])
const hopByHopHeaders = new Set([
'accept-encoding',
'connection',
'content-length',
'content-encoding',
'content-md5',
'host',
'keep-alive',
'proxy-authenticate',
'proxy-authorization',
'te',
'trailer',
'transfer-encoding',
'upgrade'
])
const server = createServer(async (request, response) => {
try {
const requestUrl = new URL(request.url || '/', `http://${request.headers.host || 'localhost'}`)
if (requestUrl.pathname === '/api/proxy') {
await proxyApiRequest(request, response, requestUrl)
return
}
await serveStatic(requestUrl.pathname, response)
} catch (error) {
console.error(error)
sendJson(response, 500, { error: 'Internal server error.' })
}
})
server.listen(port, host, () => {
console.log(`PixAI web server listening on http://${host}:${port}`)
})
async function proxyApiRequest(request, response, requestUrl) {
const targetValue = requestUrl.searchParams.get('target')
if (!targetValue) {
sendJson(response, 400, { error: 'Missing target URL.' })
return
}
let targetUrl
try {
targetUrl = new URL(targetValue)
} catch {
sendJson(response, 400, { error: 'Invalid target URL.' })
return
}
if (!['https:', 'http:'].includes(targetUrl.protocol)) {
sendJson(response, 400, { error: 'Unsupported target protocol.' })
return
}
const headers = new Headers()
for (const [key, value] of Object.entries(request.headers)) {
if (hopByHopHeaders.has(key.toLowerCase())) continue
if (Array.isArray(value)) headers.set(key, value.join(', '))
else if (value != null) headers.set(key, value)
}
headers.set('accept-encoding', 'identity')
const upstream = await fetch(targetUrl, {
method: request.method,
headers,
body: request.method === 'GET' || request.method === 'HEAD' ? undefined : request,
duplex: 'half'
})
response.statusCode = upstream.status
for (const [key, value] of upstream.headers) {
if (hopByHopHeaders.has(key.toLowerCase())) continue
response.setHeader(key, value)
}
if (!upstream.body) {
response.end()
return
}
await upstream.body.pipeTo(new WritableStream({
write(chunk) {
response.write(Buffer.from(chunk))
},
close() {
response.end()
},
abort(reason) {
response.destroy(reason)
}
}))
}
async function serveStatic(pathname, response) {
const decodedPath = decodeURIComponent(pathname)
const safePath = normalize(decodedPath).replace(/^(\.\.[/\\])+/, '')
const requestedPath = resolve(join(distDir, safePath))
const requestedStat = requestedPath.startsWith(distDir) ? await stat(requestedPath).catch(() => null) : null
const filePath = requestedStat?.isFile()
? requestedPath
: join(distDir, 'index.html')
const fileStat = await stat(filePath).catch(() => null)
if (!fileStat?.isFile()) {
sendJson(response, 404, { error: 'Build output not found. Run pnpm build first.' })
return
}
response.statusCode = 200
response.setHeader('Content-Type', mimeTypes.get(extname(filePath)) || 'application/octet-stream')
response.setHeader('Cache-Control', filePath.endsWith('index.html') ? 'no-cache' : 'public, max-age=31536000, immutable')
createReadStream(filePath).pipe(response)
}
function sendJson(response, status, payload) {
response.statusCode = status
response.setHeader('Content-Type', 'application/json; charset=utf-8')
response.end(JSON.stringify(payload))
}
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