Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 9x 9x 9x 9x | const fetch = require('node-fetch');
const hash = require('hash.js');
const ecc = require('eosjs-ecc');
// hash the parameter values to be sent to the verifier
function hashParams(params) {
const hashedParams = {};
Object.keys(params).map((key) => {
hashedParams[key] = hash.sha256().update(params[key]).digest('hex');
});
return hashedParams;
}
// Call the Verifier to verify the client request and return an ore-access-token to access a particular right
async function getAccessTokenFromVerifier(verifierEndpoint, instrument, right, hashedParams) {
let errorTitle;
let errorMessage;
let result;
const signature = await this.sign(instrument.id);
const options = {
method: 'POST',
body: JSON.stringify({
requestParams: hashedParams,
rightName: right.right_name,
signature,
voucherId: instrument.id
}),
headers: {
'Content-Type': 'application/json'
}
};
// Call the Verifier to approve the request
try {
result = await fetch(`${verifierEndpoint}/verify`, options);
if (!result.ok) {
const error = await result.json();
throw new Error(error.message);
}
} catch (error) {
errorTitle = 'Orejs Verifier Fetch Error';
throw new Error(`${errorTitle}: ${error.message}`);
}
const { endpoint, oreAccessToken, method, additionalParameters, accessTokenTimeout } = await result.json();
if (!oreAccessToken) {
errorTitle = 'Orejs Access Token Verification Error';
errorMessage = 'Verifier is unable to return an ORE access token. Make sure a valid instrument is passed to the verifier.';
throw new Error(`${errorTitle}: ${errorMessage}`);
}
if (!endpoint) {
errorTitle = 'Orejs Access Right Verification Error';
errorMessage = 'Verifier is unable to find an endpoint for the right name passed in. Make sure to pass in the correct right name you want to access.';
throw new Error(`${errorTitle}: ${errorMessage}`);
}
return { endpoint, oreAccessToken, method, additionalParameters, accessTokenTimeout };
}
module.exports = {
getAccessTokenFromVerifier,
hashParams
};
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