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64 lines
2 KiB
Markdown
64 lines
2 KiB
Markdown
# Client certificate
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Client certificate authentication can be configured with the `Client`, the required options are passed along through the `connect` option.
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The client certificates must be signed by a trusted CA. The Node.js default is to trust the well-known CAs curated by Mozilla.
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Setting the server option `requestCert: true` tells the server to request the client certificate.
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The server option `rejectUnauthorized: false` allows us to handle any invalid certificate errors in client code. The `authorized` property on the socket of the incoming request will show if the client certificate was valid. The `authorizationError` property will give the reason if the certificate was not valid.
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### Client Certificate Authentication
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```js
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const { readFileSync } = require('fs')
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const { join } = require('path')
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const { createServer } = require('https')
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const { Client } = require('undici')
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const serverOptions = {
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ca: [
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readFileSync(join(__dirname, 'client-ca-crt.pem'), 'utf8')
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],
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key: readFileSync(join(__dirname, 'server-key.pem'), 'utf8'),
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cert: readFileSync(join(__dirname, 'server-crt.pem'), 'utf8'),
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requestCert: true,
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rejectUnauthorized: false
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}
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const server = createServer(serverOptions, (req, res) => {
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// true if client cert is valid
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if(req.client.authorized === true) {
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console.log('valid')
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} else {
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console.error(req.client.authorizationError)
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}
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res.end()
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})
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server.listen(0, function () {
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const tls = {
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ca: [
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readFileSync(join(__dirname, 'server-ca-crt.pem'), 'utf8')
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],
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key: readFileSync(join(__dirname, 'client-key.pem'), 'utf8'),
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cert: readFileSync(join(__dirname, 'client-crt.pem'), 'utf8'),
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rejectUnauthorized: false,
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servername: 'agent1'
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}
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const client = new Client(`https://localhost:${server.address().port}`, {
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connect: tls
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})
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client.request({
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path: '/',
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method: 'GET'
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}, (err, { body }) => {
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body.on('data', (buf) => {})
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body.on('end', () => {
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client.close()
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server.close()
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})
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})
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})
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```
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