67 lines
1.9 KiB
JavaScript
67 lines
1.9 KiB
JavaScript
#!/bin/node
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import { SignJWT } from "jose"
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import { createPrivateKey } from "crypto"
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if (process.argv.includes("--help") || process.argv.includes("-h")) {
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console.log(`
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Creates a JWT from the components found at Apple.
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By default, the JWT has a 6 months expiry date.
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Read more: https://developer.apple.com/documentation/sign_in_with_apple/generate_and_validate_tokens#3262048
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Usage:
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node apple.mjs [--kid] [--iss] [--private_key] [--sub] [--expires_in] [--exp]
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Options:
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--help Print this help message
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--kid, --key_id The key id of the private key
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--iss, --team_id The Apple team ID
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--private_key The private key to use to sign the JWT. (Starts with -----BEGIN PRIVATE KEY-----)
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--sub, --client_id The client id to use in the JWT.
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--expires_in Number of seconds from now when the JWT should expire. Defaults to 6 months.
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--exp Future date in seconds when the JWT expires
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`)
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} else {
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const args = process.argv.slice(2).reduce((acc, arg, i) => {
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if (arg.match(/^--\w/)) {
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const key = arg.replace(/^--/, "").toLowerCase()
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acc[key] = process.argv[i + 3]
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}
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return acc
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}, {})
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const {
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team_id,
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iss = team_id,
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private_key,
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client_id,
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sub = client_id,
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key_id,
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kid = key_id,
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expires_in = 86400 * 180,
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exp = Math.ceil(Date.now() / 1000) + expires_in,
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} = args
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/**
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* How long is the secret valid in seconds.
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* @default 15780000
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*/
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const expiresAt = Math.ceil(Date.now() / 1000) + expires_in
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const expirationTime = exp ?? expiresAt
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console.log(`
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Apple client secret generated. Valid until: ${new Date(expirationTime * 1000)}
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${await new SignJWT({})
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.setAudience("https://appleid.apple.com")
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.setIssuer(iss)
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.setIssuedAt()
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.setExpirationTime(expirationTime)
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.setSubject(sub)
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.setProtectedHeader({ alg: "ES256", kid })
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.sign(createPrivateKey(private_key.replace(/\\n/g, "\n")))}`)
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}
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