ndn-js
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A JavaScript client library for Named Data Networking
84 lines (75 loc) • 2.77 kB
JavaScript
/**
* Copyright (C) 2014-2019 Regents of the University of California.
* @author: Jeff Thompson <jefft0@remap.ucla.edu>
* From PyNDN certificate_cache.py by Adeola Bannis.
* Originally from Yingdi Yu <http://irl.cs.ucla.edu/~yingdi/>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* A copy of the GNU Lesser General Public License is in the file COPYING.
*/
/** @ignore */
var IdentityCertificate = require('../certificate/identity-certificate.js').IdentityCertificate;
/**
* A CertificateCache is used to save other users' certificate during
* verification.
* @constructor
*/
var CertificateCache = function CertificateCache()
{
// The key is the certificate name URI. The value is the wire encoding Blob.
this.cache = {};
};
exports.CertificateCache = CertificateCache;
/**
* Insert the certificate into the cache. Assumes the timestamp is not yet
* removed from the name.
* @param {IdentityCertificate} certificate The certificate to insert.
*/
CertificateCache.prototype.insertCertificate = function(certificate)
{
var certName = certificate.getName().getPrefix(-1);
this.cache[certName.toUri()] = certificate.wireEncode();
};
/**
* Remove a certificate from the cache. This does nothing if it is not present.
* @param {Name} certificateName The name of the certificate to remove. This
* assumes there is no timestamp in the name.
*/
CertificateCache.prototype.deleteCertificate = function(certificateName)
{
delete this.cache[certificateName.toUri()];
};
/**
* Fetch a certificate from the cache.
* @param {Name} certificateName The name of the certificate to remove. This
* assumes there is no timestamp in the name.
* @return {IdentityCertificate} A new copy of the IdentityCertificate, or null
* if not found.
*/
CertificateCache.prototype.getCertificate = function(certificateName)
{
var certData = this.cache[certificateName.toUri()];
if (certData === undefined)
return null;
var cert = new IdentityCertificate();
cert.wireDecode(certData);
return cert;
};
/**
* Clear all certificates from the store.
*/
CertificateCache.prototype.reset = function()
{
this.cache = {};
};