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Cache apple public key for the case it fails to fetch again #5848

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merged 1 commit into from
Jul 25, 2019
Merged

Cache apple public key for the case it fails to fetch again #5848

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16 changes: 14 additions & 2 deletions src/Adapters/Auth/apple.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,16 +5,28 @@ const jwt = require('jsonwebtoken');

const TOKEN_ISSUER = 'https://appleid.apple.com';

let currentKey;

const getApplePublicKey = async () => {
const data = await httpsRequest.get('https://appleid.apple.com/auth/keys');
let data;
try {
data = await httpsRequest.get('https://appleid.apple.com/auth/keys');
} catch (e) {
if (currentKey) {
return currentKey;
}
throw e;
}

const key = data.keys[0];

const pubKey = new NodeRSA();
pubKey.importKey(
{ n: Buffer.from(key.n, 'base64'), e: Buffer.from(key.e, 'base64') },
'components-public'
);
return pubKey.exportKey(['public']);
currentKey = pubKey.exportKey(['public']);
return currentKey;
};

const verifyIdToken = async (token, clientID) => {
Expand Down