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Allow to customize OIDC verification
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19 changes: 19 additions & 0 deletions
19
extensions/oidc/runtime/src/main/java/io/quarkus/oidc/Tenant.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,19 @@ | ||
| package io.quarkus.oidc; | ||
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| import static java.lang.annotation.ElementType.TYPE; | ||
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| import java.lang.annotation.Retention; | ||
| import java.lang.annotation.RetentionPolicy; | ||
| import java.lang.annotation.Target; | ||
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| /** | ||
| * Qualifier which can be used to associate one or more OIDC features with a named tenant. | ||
| */ | ||
| @Target({ TYPE }) | ||
| @Retention(RetentionPolicy.RUNTIME) | ||
| public @interface Tenant { | ||
| /** | ||
| * Identifies an OIDC tenant to which a given feature applies. | ||
| */ | ||
| String value(); | ||
| } |
32 changes: 32 additions & 0 deletions
32
extensions/oidc/runtime/src/main/java/io/quarkus/oidc/TokenCustomizer.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,32 @@ | ||
| package io.quarkus.oidc; | ||
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| import jakarta.json.JsonObject; | ||
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| /** | ||
| * TokenCustomizer can be used to change token headers to their original value for the token verification to succeed. | ||
| * | ||
| * Use it only if OIDC provider has changed some of the header values after the token signature has been created | ||
| * for security reasons. Changing the headers in all other cases will lead to the token signature verification failure. | ||
| * | ||
| * Please note that JSON canonicalization is not performed as part of JWT token signing process. | ||
| * It means that if OIDC provider adds ignorable characters such as spaces or newline characters to JSON | ||
| * which represents token headers then these characters will also be included as an additional input to | ||
| * the token signing process. In this case recreating exactly the same JSON token headers sequence after the headers | ||
| * have been modified by this customizer will not be possible and the signature verification will fail. | ||
| * | ||
| * Custom token customizers should be registered and discoverable as CDI beans. | ||
| * They should be bound to specific OIDC tenants with a {@link Tenant} qualifier. | ||
| * with the exception of named customizers provided by this extension which have to be selected with | ||
| * a `quarkus.oidc.token.customizer-name` property. | ||
| * | ||
| * Custom token customizers without a {@link Tenant} qualifier will be bound to all OIDC tenants. | ||
| */ | ||
| public interface TokenCustomizer { | ||
| /** | ||
| * Customize token headers | ||
| * | ||
| * @param headers the token headers | ||
| * @return modified headers, null can be returned to indicate no modification has taken place | ||
| */ | ||
| JsonObject customizeHeaders(JsonObject headers); | ||
| } |
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39 changes: 39 additions & 0 deletions
39
extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/TokenCustomizerFinder.java
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| @@ -0,0 +1,39 @@ | ||
| package io.quarkus.oidc.runtime; | ||
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| import io.quarkus.arc.Arc; | ||
| import io.quarkus.arc.ArcContainer; | ||
| import io.quarkus.arc.InstanceHandle; | ||
| import io.quarkus.oidc.OIDCException; | ||
| import io.quarkus.oidc.OidcTenantConfig; | ||
| import io.quarkus.oidc.Tenant; | ||
| import io.quarkus.oidc.TokenCustomizer; | ||
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| public class TokenCustomizerFinder { | ||
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| public static TokenCustomizer find(OidcTenantConfig oidcConfig) { | ||
| if (oidcConfig == null) { | ||
| return null; | ||
| } | ||
| ArcContainer container = Arc.container(); | ||
| if (container != null) { | ||
| String customizerName = oidcConfig.token.customizerName.orElse(null); | ||
| if (customizerName != null && !customizerName.isEmpty()) { | ||
| InstanceHandle<TokenCustomizer> tokenCustomizer = container.instance(customizerName); | ||
| if (tokenCustomizer.isAvailable()) { | ||
| return tokenCustomizer.get(); | ||
| } else { | ||
| throw new OIDCException("Unable to find TokenCustomizer " + customizerName); | ||
| } | ||
| } else { | ||
| for (InstanceHandle<TokenCustomizer> tokenCustomizer : container.listAll(TokenCustomizer.class)) { | ||
| Tenant tenantAnn = tokenCustomizer.get().getClass().getAnnotation(Tenant.class); | ||
| if (tenantAnn != null && oidcConfig.tenantId.get().equals(tenantAnn.value())) { | ||
| return tokenCustomizer.get(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
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| } |
36 changes: 36 additions & 0 deletions
36
...c/runtime/src/main/java/io/quarkus/oidc/runtime/providers/AzureAccessTokenCustomizer.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,36 @@ | ||
| package io.quarkus.oidc.runtime.providers; | ||
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| import java.nio.charset.StandardCharsets; | ||
| import java.util.Base64; | ||
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| import jakarta.enterprise.context.ApplicationScoped; | ||
| import jakarta.inject.Named; | ||
| import jakarta.json.Json; | ||
| import jakarta.json.JsonObject; | ||
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| import io.quarkus.oidc.OIDCException; | ||
| import io.quarkus.oidc.TokenCustomizer; | ||
| import io.quarkus.oidc.runtime.OidcUtils; | ||
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| @Named("azure-access-token-customizer") | ||
| @ApplicationScoped | ||
| public class AzureAccessTokenCustomizer implements TokenCustomizer { | ||
| private static final String NONCE = "nonce"; | ||
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| @Override | ||
| public JsonObject customizeHeaders(JsonObject headers) { | ||
| try { | ||
| String nonce = headers.getString(NONCE); | ||
| if (nonce != null) { | ||
| byte[] nonceSha256 = OidcUtils.getSha256Digest(nonce.getBytes(StandardCharsets.UTF_8)); | ||
| byte[] newNonceBytes = Base64.getUrlEncoder().withoutPadding().encode(nonceSha256); | ||
| return Json.createObjectBuilder(headers) | ||
| .add(NONCE, new String(newNonceBytes, StandardCharsets.UTF_8)).build(); | ||
| } | ||
| return null; | ||
| } catch (Exception ex) { | ||
| throw new OIDCException(ex); | ||
| } | ||
| } | ||
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| } |
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65 changes: 65 additions & 0 deletions
65
extensions/oidc/runtime/src/test/java/io/quarkus/oidc/runtime/OidcProviderTest.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,65 @@ | ||
| package io.quarkus.oidc.runtime; | ||
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| import static org.junit.jupiter.api.Assertions.assertEquals; | ||
| import static org.junit.jupiter.api.Assertions.fail; | ||
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| import java.nio.charset.StandardCharsets; | ||
| import java.util.Base64; | ||
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| import jakarta.json.Json; | ||
| import jakarta.json.JsonObject; | ||
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| import org.jose4j.jwk.RsaJsonWebKey; | ||
| import org.jose4j.jwk.RsaJwkGenerator; | ||
| import org.jose4j.jwt.consumer.InvalidJwtException; | ||
| import org.junit.jupiter.api.Test; | ||
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| import io.quarkus.oidc.OidcTenantConfig; | ||
| import io.quarkus.oidc.TokenCustomizer; | ||
| import io.smallrye.jwt.build.Jwt; | ||
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| public class OidcProviderTest { | ||
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| @SuppressWarnings("resource") | ||
| @Test | ||
| public void testAlgorithmCustomizer() throws Exception { | ||
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| RsaJsonWebKey rsaJsonWebKey = RsaJwkGenerator.generateJwk(2048); | ||
| rsaJsonWebKey.setKeyId("k1"); | ||
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| final String token = Jwt.issuer("http://keycloak/ream").jws().keyId("k1").sign(rsaJsonWebKey.getPrivateKey()); | ||
| final String newToken = replaceAlgorithm(token, "ES256"); | ||
| JsonWebKeySet jwkSet = new JsonWebKeySet("{\"keys\": [" + rsaJsonWebKey.toJson() + "]}"); | ||
| OidcTenantConfig oidcConfig = new OidcTenantConfig(); | ||
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| OidcProvider provider = new OidcProvider(null, oidcConfig, jwkSet, null, null); | ||
| try { | ||
| provider.verifyJwtToken(newToken, false); | ||
| fail("InvalidJwtException expected"); | ||
| } catch (InvalidJwtException ex) { | ||
| // continue | ||
| } | ||
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| provider = new OidcProvider(null, oidcConfig, jwkSet, new TokenCustomizer() { | ||
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| @Override | ||
| public JsonObject customizeHeaders(JsonObject headers) { | ||
| return Json.createObjectBuilder(headers).add("alg", "RS256").build(); | ||
| } | ||
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| }, null); | ||
| TokenVerificationResult result = provider.verifyJwtToken(newToken, false); | ||
| assertEquals("http://keycloak/ream", result.localVerificationResult.getString("iss")); | ||
| } | ||
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| private static String replaceAlgorithm(String token, String algorithm) { | ||
| io.vertx.core.json.JsonObject headers = OidcUtils.decodeJwtHeaders(token); | ||
| headers.put("alg", algorithm); | ||
| String newHeaders = new String( | ||
| Base64.getUrlEncoder().withoutPadding().encode(headers.toString().getBytes()), | ||
| StandardCharsets.UTF_8); | ||
| int dotIndex = token.indexOf('.'); | ||
| return newHeaders + token.substring(dotIndex); | ||
| } | ||
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| } |
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