aws-cloudfront-sign/dist/esm/utils.js

Utility module for signing AWS CloudFront URLs

import { readFileSync } from 'fs';
import { createSign } from 'crypto';
import CannedPolicy from './canned-policy';
export function normalizeBase64(str) {
    return str
        .replace(/\+/g, '-')
        .replace(/=/g, '_')
        .replace(/\//g, '~');
}
export function createPolicy(cfUrl, expireTime, ipRange) {
    const defaultExpireTime = Math.round(Date.now() + 1800000);
    expireTime = expireTime || defaultExpireTime;
    return new CannedPolicy(cfUrl, expireTime, ipRange);
}
export function createPolicySignature(policy, privateKey) {
    const sign = createSign('RSA-SHA1');
    sign.update(policy.toJSON());
    return sign.sign(privateKey, 'base64');
}
export function getExpireTime(opts) {
    return +opts.expireTime || null;
}
export function getIpRange(opts) {
    return opts.ipRange || null;
}
export function getPrivateKey(params) {
    let privateKeyString = params.privateKeyString;
    let pem;
    if (params.privateKeyPath) {
        pem = readFileSync(params.privateKeyPath);
        privateKeyString = pem.toString('ascii');
    }
    const newLinePattern = /\r|\n/;
    const lineBreakExists = newLinePattern.test(privateKeyString);
    if (!lineBreakExists) {
        throw new Error('Invalid private key string, must include line breaks');
    }
    return privateKeyString;
}
export function assert(assertion, msg) {
    if (!assertion) {
        throw new Error(msg);
    }
}
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