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feat: add polling for outbound relay configuration (#100)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| const https = require('https'); | ||
| const tls = require('tls'); | ||
| const Datatypes = require('./datatypes'); | ||
| const certHelper = require('./certHelper'); | ||
| const HttpsProxyAgent = require('./proxyAgent'); | ||
|
|
||
| const origCreateSecureContext = tls.createSecureContext; | ||
|
|
||
| /** | ||
| * @param {String} apiKey | ||
| * @returns {void} | ||
| */ | ||
| const overloadHttpsModule = async ( | ||
| apiKey, | ||
| tunnelHostname, | ||
| domainFilter, | ||
| debugRequests = false, | ||
| evClient, | ||
| originalRequest | ||
| ) => { | ||
| let x509 = null; | ||
|
|
||
| async function updateCertificate() { | ||
| const pem = await evClient.getCert(); | ||
| let cert = pem.toString(); | ||
| x509 = certHelper.parseX509(cert); | ||
| tls.createSecureContext = (options) => { | ||
| const context = origCreateSecureContext(options); | ||
| context.context.addCACert(pem); | ||
| return context; | ||
| }; | ||
| } | ||
|
|
||
| function isCertificateInvalid() { | ||
| if (!Datatypes.isDefined(x509)) { | ||
| return true; | ||
| } | ||
| const epoch = new Date().valueOf(); | ||
| return ( | ||
| epoch > new Date(x509.validTo).valueOf() || | ||
| epoch < new Date(x509.validFrom).valueOf() | ||
| ); | ||
| } | ||
|
|
||
| function getDomainFromArgs(args) { | ||
| if (typeof args[0] === 'string') { | ||
| return new URL(args[0]).host; | ||
| } | ||
|
|
||
| if (args.url) { | ||
| return args.url.match(domainRegex)[0]; | ||
| } | ||
|
|
||
| let domain; | ||
| for (const arg of args) { | ||
| if (arg instanceof Object) { | ||
| domain = domain || arg.hostname || arg.host; | ||
| } | ||
| } | ||
| return domain; | ||
| } | ||
|
|
||
| function wrapMethodRequest(...args) { | ||
| const domain = getDomainFromArgs(args); | ||
| const shouldProxy = domainFilter(domain); | ||
| if (debugRequests) { | ||
| console.log( | ||
| `EVERVAULT DEBUG :: Request to domain: ${domain}, Outbound Proxy enabled: ${shouldProxy}` | ||
| ); | ||
| } | ||
| args = args.map((arg) => { | ||
| if (shouldProxy && arg instanceof Object) { | ||
| arg.agent = new HttpsProxyAgent( | ||
| tunnelHostname, | ||
| updateCertificate, | ||
| isCertificateInvalid | ||
| ); | ||
| arg.headers = { ...arg.headers, 'Proxy-Authorization': apiKey }; | ||
| } | ||
| return arg; | ||
| }); | ||
| return originalRequest.apply(this, args); | ||
| } | ||
|
|
||
| https.request = wrapMethodRequest; | ||
| }; | ||
|
|
||
| module.exports = { | ||
| overloadHttpsModule, | ||
| }; |
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