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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2017-2022 Payara Foundation and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://github.com/payara/Payara/blob/main/LICENSE.txt
* See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* If you wish your version of this file to be governed by only the CDDL or
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package fish.payara.microprofile.jwtauth.eesecurity;
import org.eclipse.microprofile.config.Config;
import org.glassfish.grizzly.http.util.ContentType;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import jakarta.json.JsonValue;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.time.Duration;
import java.util.Base64;
import java.util.Objects;
import java.util.Optional;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.lang.Thread.currentThread;
public class JwtKeyStoreUtils {
private static final Logger LOGGER = Logger.getLogger(JwtKeyStoreUtils.class.getName());
static String trimPem(String key) {
return key.replaceAll("-----BEGIN (.*)-----", "")
.replaceAll("-----END (.*)----", "")
.replaceAll("\r\n", "")
.replaceAll("\n", "")
.trim();
}
static CacheableString readMPKeyFromLocation(Config config, String mpConfigProperty,
Duration defaultCacheTTL) {
Optional locationOpt = config.getOptionalValue(mpConfigProperty, String.class);
if (!locationOpt.isPresent()) {
return CacheableString.empty(defaultCacheTTL);
}
String publicKeyLocation = locationOpt.get();
return readKeyFromLocation(publicKeyLocation, defaultCacheTTL);
}
static CacheableString readKeyFromLocation(String keyLocation, Duration defaultCacheTTL) {
URL keyURL = currentThread().getContextClassLoader().getResource(keyLocation);
if (keyURL == null) {
try {
keyURL = new URL(keyLocation);
} catch (MalformedURLException ex) {
keyURL = null;
}
}
if (keyURL == null) {
return CacheableString.empty(defaultCacheTTL);
}
try {
return readKeyFromURL(keyURL, defaultCacheTTL);
} catch (IOException ex) {
throw new IllegalStateException("Failed to read key.", ex);
}
}
private static CacheableString readKeyFromURL(URL keyURL, Duration defaultCacheTTL) throws IOException {
URLConnection urlConnection = keyURL.openConnection();
Charset charset = Charset.defaultCharset();
ContentType contentType = ContentType.newContentType(urlConnection.getContentType());
if (contentType != null) {
String charEncoding = contentType.getCharacterEncoding();
if (charEncoding != null) {
try {
if (!Charset.isSupported(charEncoding)) {
LOGGER.warning("Charset " + charEncoding
+ " for remote key not supported, using default charset instead");
} else {
charset = Charset.forName(contentType.getCharacterEncoding());
}
} catch (IllegalCharsetNameException ex) {
LOGGER.severe("Charset " + ex.getCharsetName() + " for remote key not supported, Cause: "
+ ex.getMessage());
}
}
}
// There's no guarantee that the response will contain at most one Cache-Control header and at most one max-age
// directive. Here, we apply the smallest of all max-age directives.
Duration cacheTTL = urlConnection.getHeaderFields().entrySet().stream()
.filter(e -> e.getKey() != null && e.getKey().trim().equalsIgnoreCase("Cache-Control"))
.flatMap(headers -> headers.getValue().stream())
.flatMap(headerValue -> Stream.of(headerValue.split(",")))
.filter(directive -> directive.trim().startsWith("max-age"))
.map(maxAgeDirective -> {
String[] keyValue = maxAgeDirective.split("=", 2);
String maxAge = keyValue[keyValue.length - 1];
try {
return Duration.ofSeconds(Long.parseLong(maxAge));
} catch (NumberFormatException e) {
return null;
}
})
.filter(Objects::nonNull)
.min(Duration::compareTo)
.orElse(defaultCacheTTL);
try (InputStream inputStream = urlConnection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, charset))) {
String keyContents = reader.lines().collect(Collectors.joining(System.lineSeparator()));
return CacheableString.from(keyContents, cacheTTL);
}
}
static JsonObject parseJwks(String jwksValue) throws Exception {
JsonObject jwks;
try (JsonReader reader = Json.createReader(new StringReader(jwksValue))) {
jwks = reader.readObject();
} catch (Exception ex) {
// if jwks is encoded
byte[] jwksDecodedValue = Base64.getDecoder().decode(jwksValue);
try (InputStream jwksStream = new ByteArrayInputStream(jwksDecodedValue);
JsonReader reader = Json.createReader(jwksStream)) {
jwks = reader.readObject();
}
}
return jwks;
}
static JsonObject findJwk(JsonArray keys, String keyID) {
if (Objects.isNull(keyID) && keys.size() > 0) {
return keys.getJsonObject(0);
}
for (JsonValue value : keys) {
JsonObject jwk = value.asJsonObject();
if (Objects.equals(keyID, jwk.getString("kid"))) {
return jwk;
}
}
throw new IllegalStateException("No matching JWK for KeyID.");
}
}
