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UserPrincipal.java
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UserPrincipal.java
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/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See LICENSE in the project root for
* license information.
*/
package com.microsoft.azure.spring.autoconfigure.aad;
import com.nimbusds.jose.JOSEException;
import com.nimbusds.jose.JWSAlgorithm;
import com.nimbusds.jose.JWSObject;
import com.nimbusds.jose.jwk.JWK;
import com.nimbusds.jose.jwk.JWKSet;
import com.nimbusds.jose.jwk.source.JWKSource;
import com.nimbusds.jose.jwk.source.RemoteJWKSet;
import com.nimbusds.jose.proc.BadJOSEException;
import com.nimbusds.jose.proc.JWSKeySelector;
import com.nimbusds.jose.proc.JWSVerificationKeySelector;
import com.nimbusds.jose.proc.SecurityContext;
import com.nimbusds.jwt.JWTClaimsSet;
import com.nimbusds.jwt.proc.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.ParseException;
import java.util.*;
public class UserPrincipal {
private static final Logger LOG = LoggerFactory.getLogger(UserPrincipal.class);
private ServiceEndpoints serviceEndpoints;
private JWKSet jwsKeySet;
private JWSObject jwsObject;
private JWTClaimsSet jwtClaimsSet;
private List<UserGroup> userGroups;
public UserPrincipal() {
jwsObject = null;
jwtClaimsSet = null;
userGroups = null;
serviceEndpoints = new ServiceEndpoints();
}
public UserPrincipal(String idToken, ServiceEndpoints serviceEndpoints)
throws MalformedURLException, ParseException, BadJOSEException, JOSEException {
this.serviceEndpoints = serviceEndpoints;
this.jwsKeySet = loadAadPublicKeys();
final ConfigurableJWTProcessor<SecurityContext> validator = getAadJwtTokenValidator();
jwtClaimsSet = validator.process(idToken, null);
final JWTClaimsSetVerifier<SecurityContext> verifier = validator
.getJWTClaimsSetVerifier();
verifier.verify(jwtClaimsSet, null);
jwsObject = JWSObject.parse(idToken);
userGroups = null;
}
private JWKSet loadAadPublicKeys() {
try {
return JWKSet.load(new URL(serviceEndpoints.getAadKeyDiscoveryUri()));
} catch (IOException | ParseException e) {
LOG.error("Error loading AAD public keys: {}", e.getMessage());
}
return null;
}
// claimset
public String getIssuer() {
return jwtClaimsSet == null ? null : jwtClaimsSet.getIssuer();
}
public String getSubject() {
return jwtClaimsSet == null ? null : jwtClaimsSet.getSubject();
}
public Map<String, Object> getClaims() {
return jwtClaimsSet == null ? null : jwtClaimsSet.getClaims();
}
public Object getClaim() {
return jwtClaimsSet == null ? null : jwtClaimsSet.getClaim("tid");
}
// header
public String getKid() {
return jwsObject == null ? null : jwsObject.getHeader().getKeyID();
}
// JWK
public JWK getJWKByKid(String kid) {
return jwsKeySet == null ? null : jwsKeySet.getKeyByKeyId(kid);
}
public void setUserGroups(List<UserGroup> groups) {
this.userGroups = groups;
}
public List<UserGroup> getUserGroups() {
return this.userGroups;
}
public boolean isMemberOf(UserGroup group) {
return !(userGroups == null || userGroups.isEmpty()) && userGroups.contains(group);
}
private ConfigurableJWTProcessor<SecurityContext> getAadJwtTokenValidator()
throws MalformedURLException {
final ConfigurableJWTProcessor<SecurityContext> jwtProcessor = new DefaultJWTProcessor<>();
final JWKSource<SecurityContext> keySource =
new RemoteJWKSet<>(new URL(serviceEndpoints.getAadKeyDiscoveryUri()));
final JWSAlgorithm expectedJWSAlg = JWSAlgorithm.RS256;
final JWSKeySelector<SecurityContext> keySelector = new JWSVerificationKeySelector<>(expectedJWSAlg, keySource);
jwtProcessor.setJWSKeySelector(keySelector);
jwtProcessor.setJWTClaimsSetVerifier(new DefaultJWTClaimsVerifier<SecurityContext>() {
@Override
public void verify(JWTClaimsSet claimsSet, SecurityContext ctx) throws BadJWTException {
super.verify(claimsSet, ctx);
final String issuer = claimsSet.getIssuer();
if (issuer == null || !issuer.contains("https://sts.windows.net/")
&& !issuer.contains("https://sts.chinacloudapi.cn/")) {
throw new BadJWTException("Invalid token issuer");
}
}
});
return jwtProcessor;
}
}