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feat: add jwtDecoder to McpServerOAuth2Configurer #12

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feat: add jwtDecoder to McpServerOAuth2Configurer #12

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13f9344
feat: add jwtDecoderCustomizer to McpServerOAuth2Configurer
Oct 3, 2025
937acc5
Add jwtDecoder
Oct 4, 2025
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16 changes: 13 additions & 3 deletions ...main/java/org/springaicommunity/mcp/security/server/config/McpServerOAuth2Configurer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,8 @@ public class McpServerOAuth2Configurer extends AbstractHttpConfigurer<McpServerO

private boolean validateAudienceClaim = false;

private NimbusJwtDecoder decoder = null;

public McpServerOAuth2Configurer authorizationServer(String issuerUri) {
this.issuerUri = issuerUri;
return this;
Expand Down Expand Up @@ -90,6 +92,11 @@ public McpServerOAuth2Configurer validateAudienceClaim(boolean validateAudienceC
return this;
}

public McpServerOAuth2Configurer jwtDecoder(NimbusJwtDecoder decoder) {
this.decoder = decoder;
return this;
}

@Override
public void init(HttpSecurity http) throws Exception {
Assert.notNull(this.issuerUri, "authorizationServer cannot be null");
Expand All @@ -101,19 +108,22 @@ public void init(HttpSecurity http) throws Exception {
.setProtectedResourceMetadataCustomizer(getProtectedMetadataCustomizer());

var entryPoint = new BearerResourceMetadataTokenAuthenticationEntryPoint(this.resourceIdentifier);
var jwtDecoder = buildJwtDecoder();

//@formatter:off
http
.oauth2ResourceServer(resourceServer -> {
resourceServer.jwt(jwt -> jwt.decoder(getJwtDecoder(http)));
resourceServer.jwt(jwt -> jwt.decoder(jwtDecoder));
resourceServer.authenticationEntryPoint(entryPoint);
})
.addFilterBefore(protectedResourceMetadataEndpointFilter, AbstractPreAuthenticatedProcessingFilter.class);
//@formatter:on
}

private JwtDecoder getJwtDecoder(HttpSecurity http) {
var decoder = NimbusJwtDecoder.withIssuerLocation(this.issuerUri).build();
private JwtDecoder buildJwtDecoder() {
var decoder = this.decoder != null
? this.decoder
: NimbusJwtDecoder.withIssuerLocation(this.issuerUri).build();

if (this.validateAudienceClaim) {
OAuth2TokenValidator<Jwt> jwtValidator = JwtValidators
Expand Down