Resource Server Jwt Support

Introducing initial support for Jwt-Encoded Bearer Token authorization
with remote JWK set signature verification.

High-level features include:

- Accepting bearer tokens as headers and form or query parameters
- Verifying signatures from a remote Jwk set

And:

- A DSL for easy configuration
- A sample to demonstrate usage

Fixes: gh-5128
Fixes: gh-5125
Fixes: gh-5121
Fixes: gh-5130
Fixes: gh-5226
Fixes: gh-5237

samples/boot/oauth2resourceserver/src/integration-test/java/sample/OAuth2ResourceServerApplicationITests.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2002-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package sample;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.HttpHeaders;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.RequestPostProcessor;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+/**
+ * Integration tests for {@link OAuth2ResourceServerApplication}
+ *
+ * @author Josh Cummings
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+@ActiveProfiles("test")
+public class OAuth2ResourceServerApplicationITests {
+
+	String noScopesToken = "eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0IiwiZXhwIjo0NjgzODA1MTI4fQ.ULEPdHG-MK5GlrTQMhgqcyug2brTIZaJIrahUeq9zaiwUSdW83fJ7W1IDd2Z3n4a25JY2uhEcoV95lMfccHR6y_2DLrNvfta22SumY9PEDF2pido54LXG6edIGgarnUbJdR4rpRe_5oRGVa8gDx8FnuZsNv6StSZHAzw5OsuevSTJ1UbJm4UfX3wiahFOQ2OI6G-r5TB2rQNdiPHuNyzG5yznUqRIZ7-GCoMqHMaC-1epKxiX8gYXRROuUYTtcMNa86wh7OVDmvwVmFioRcR58UWBRoO1XQexTtOQq_t8KYsrPZhb9gkyW8x2bAQF-d0J0EJY8JslaH6n4RBaZISww";
+	String messageReadToken = "eyJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJzdWJqZWN0Iiwic2NvcGUiOiJtZXNzYWdlOnJlYWQiLCJleHAiOjQ2ODM4MDUxNDF9.h-j6FKRFdnTdmAueTZCdep45e6DPwqM68ZQ8doIJ1exi9YxAlbWzOwId6Bd0L5YmCmp63gGQgsBUBLzwnZQ8kLUgUOBEC3UzSWGRqMskCY9_k9pX0iomX6IfF3N0PaYs0WPC4hO1s8wfZQ-6hKQ4KigFi13G9LMLdH58PRMK0pKEvs3gCbHJuEPw-K5ORlpdnleUTQIwINafU57cmK3KocTeknPAM_L716sCuSYGvDl6xUTXO7oPdrXhS_EhxLP6KxrpI1uD4Ea_5OWTh7S0Wx5LLDfU6wBG1DowN20d374zepOIEkR-Jnmr_QlR44vmRqS5ncrF-1R0EGcPX49U6A";
+
+	@Autowired
+	MockMvc mvc;
+
+	@Test
+	public void performWhenValidBearerTokenThenAllows()
+		throws Exception {
+
+		this.mvc.perform(get("/").with(bearerToken(this.noScopesToken)))
+				.andExpect(status().isOk())
+				.andExpect(content().string(containsString("Hello, subject!")));
+	}
+
+	// -- tests with scopes
+
+	@Test
+	public void performWhenValidBearerTokenThenScopedRequestsAlsoWork()
+			throws Exception {
+
+		this.mvc.perform(get("/message").with(bearerToken(this.messageReadToken)))
+				.andExpect(status().isOk())
+				.andExpect(content().string(containsString("secret message")));
+	}
+
+	@Test
+	public void performWhenInsufficientlyScopedBearerTokenThenDeniesScopedMethodAccess()
+			throws Exception {
+
+		this.mvc.perform(get("/message").with(bearerToken(this.noScopesToken)))
+				.andExpect(status().isForbidden())
+				.andExpect(header().string(HttpHeaders.WWW_AUTHENTICATE,
+						containsString("Bearer error=\"insufficient_scope\"")));
+	}
+
+	private static class BearerTokenRequestPostProcessor implements RequestPostProcessor {
+		private String token;
+
+		public BearerTokenRequestPostProcessor(String token) {
+			this.token = token;
+		}
+
+		@Override
+		public MockHttpServletRequest postProcessRequest(MockHttpServletRequest request) {
+			request.addHeader("Authorization", "Bearer " + this.token);
+			return request;
+		}
+	}
+
+	private static BearerTokenRequestPostProcessor bearerToken(String token) {
+		return new BearerTokenRequestPostProcessor(token);
+	}
+}