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Added pub key caching
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Adrian Damian authored and Adrian Damian committed Oct 31, 2024
1 parent ef371e4 commit 3267e7a
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135 changes: 135 additions & 0 deletions cadc-gms/src/main/java/org/opencadc/auth/OIDCProviderPubKey.java
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/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2024. (c) 2024.
* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* <http://www.gnu.org/licenses/>. pas le cas, consultez :
* <http://www.gnu.org/licenses/>.
*
************************************************************************
*/

package org.opencadc.auth;

import ca.nrc.cadc.reg.client.CachingFile;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.apache.log4j.Logger;


/**
* Cache object that manages the cache file for the public keys of the OIDC Provider.
*/
public class OIDCProviderPubKey {
private static final Logger log = Logger.getLogger(OIDCProviderPubKey.class);
private static final String CACHE_DIRECTORY_NAME = "cadc-gms-1.0";
private URL jwksUrl;

final URI issuer;

public OIDCProviderPubKey(URI issuer, URL jwksUrl) {
if (issuer == null) {
throw new IllegalStateException("OIDC Issuer URI is required.");
}
if (jwksUrl == null) {
throw new IllegalStateException("JWKS URI is required.");
}
this.issuer = issuer;
this.jwksUrl = jwksUrl;
}

public CachingFile getCachingFile() {
return new CachingFile(getCachedFile(), jwksUrl);
}

private File getCachedFile() {
final Path baseCacheDir = getBaseCacheDirectory();
final String issuerAuthority = this.issuer.getAuthority();
final Path resourceCacheDir = Paths.get(baseCacheDir.toString(), issuerAuthority);

// Create a path to the cache file itself
final Path path = Paths.get(resourceCacheDir.toString(), this.issuer.getPath(), "jwks.json");
log.debug("Caching file [" + path + "] in dir [" + resourceCacheDir + "]");

return path.toFile();
}

private Path getBaseCacheDirectory() {
final String tmpDir = System.getProperty("java.io.tmpdir");
final String userName = System.getProperty("user.name");

if (tmpDir == null) {
throw new RuntimeException("No tmp system dir defined.");
}

final Path baseCacheDir;
if (userName == null) {
baseCacheDir = Paths.get(tmpDir, OIDCProviderPubKey.CACHE_DIRECTORY_NAME);
} else {
baseCacheDir = Paths.get(tmpDir, userName, OIDCProviderPubKey.CACHE_DIRECTORY_NAME);
}

log.debug("Base cache dir: " + baseCacheDir);
return baseCacheDir;
}
}
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