Move web security configuration to application module

Issue-ID: CPS-288
Change-Id: Ieba184c3e4727e354c19a3db31325052d15ced44
Signed-off-by: Ruslan Kashapov <ruslan.kashapov@pantheon.tech>

4 files changed, 182 insertions, 0 deletions

diff --git a/cps-application/src/main/java/org/onap/cps/config/WebSecurityConfig.java b/cps-application/src/main/java/org/onap/cps/config/WebSecurityConfig.java
new file mode 100644
index 0000000000..fbf1be9a18
--- /dev/null
+++ b/cps-application/src/main/java/org/onap/cps/config/WebSecurityConfig.java
@@ -0,0 +1,82 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (c) 2021 Bell Canada.
+ *  Modification Copyright (C) 2021 Pantheon.tech
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+
+/**
+ * Configuration class to implement application security.
+ * It enforces Basic Authentication access control.
+ */
+@Configuration
+@EnableWebSecurity
+public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
+
+    private static final String USER_ROLE = "USER";
+
+    private final String username;
+    private final String password;
+    private final String[] permitUris;
+
+    /**
+     * Constructor. Accepts parameters from configuration.
+     *
+     * @param permitUris comma-separated list of uri patterns for endpoints permitted
+     * @param username   username
+     * @param password   password
+     */
+    public WebSecurityConfig(
+        @Autowired @Value("${security.permit-uri}") final String permitUris,
+        @Autowired @Value("${security.auth.username}") final String username,
+        @Autowired @Value("${security.auth.password}") final String password
+    ) {
+        super();
+        this.permitUris = permitUris.isEmpty() ? new String[] {"/v3/api-docs"} : permitUris.split("\\s*,\\s*");
+        this.username = username;
+        this.password = password;
+    }
+
+    @Override
+    // The team decided to disable default CSRF Spring protection and not implement CSRF tokens validation.
+    // CPS is a stateless REST API that is not as vulnerable to CSRF attacks as web applications running in
+    // web browsers are. CPS  does not manage sessions, each request requires the authentication token in the header.
+    // See https://docs.spring.io/spring-security/site/docs/5.3.8.RELEASE/reference/html5/#csrf
+    @SuppressWarnings("squid:S4502")
+    protected void configure(final HttpSecurity http) throws Exception {
+        http
+            .csrf().disable()
+            .authorizeRequests()
+            .antMatchers(permitUris).permitAll()
+            .anyRequest().authenticated()
+            .and().httpBasic();
+    }
+
+    @Override
+    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
+        auth.inMemoryAuthentication().withUser(username).password("{noop}" + password).roles(USER_ROLE);
+    }
+}
diff --git a/cps-application/src/test/groovy/org/onap/cps/rest/controller/ControllerSecuritySpec.groovy b/cps-application/src/test/groovy/org/onap/cps/rest/controller/ControllerSecuritySpec.groovy
new file mode 100755
index 0000000000..01d3735827
--- /dev/null
+++ b/cps-application/src/test/groovy/org/onap/cps/rest/controller/ControllerSecuritySpec.groovy
@@ -0,0 +1,62 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Pantheon.tech
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.rest.controller
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.http.HttpStatus
+import org.springframework.test.web.servlet.MockMvc
+import spock.lang.Specification
+
+@WebMvcTest(controllers = TestController.class)
+class ControllerSecuritySpec extends Specification {
+
+    @Autowired
+    MockMvc mvc
+
+    def testEndpoint = '/test'
+
+    def 'Get request with authentication'() {
+        when: 'request is sent with authentication'
+            def response = mvc.perform(
+                    get(testEndpoint).header("Authorization", 'Basic Y3BzdXNlcjpjcHNyMGNrcyE=')
+            ).andReturn().response
+        then: 'HTTP OK status code is returned'
+            assert response.status == HttpStatus.OK.value()
+    }
+
+    def 'Get request without authentication is not authorized'() {
+        when: 'request is sent without authentication'
+            def response = mvc.perform(get(testEndpoint)).andReturn().response
+        then: 'HTTP Unauthorized status code is returned'
+            assert response.status == HttpStatus.UNAUTHORIZED.value()
+    }
+
+    def 'Get request with invalid authentication is not authorized'() {
+        when: 'request is sent with invalid authentication'
+            def response = mvc.perform(
+                    get(testEndpoint).header("Authorization", 'Basic invalid auth')
+            ).andReturn().response
+        then: 'HTTP Unauthorized status code is returned'
+            assert response.status == HttpStatus.UNAUTHORIZED.value()
+    }
+}
diff --git a/cps-application/src/test/java/org/onap/cps/rest/controller/TestController.java b/cps-application/src/test/java/org/onap/cps/rest/controller/TestController.java
new file mode 100644
index 0000000000..34325c71ac
--- /dev/null
+++ b/cps-application/src/test/java/org/onap/cps/rest/controller/TestController.java
@@ -0,0 +1,34 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Pantheon.tech
+ *  ================================================================================
+ *  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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.rest.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class TestController {
+
+    @GetMapping("/test")
+    ResponseEntity<String> test() {
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}
diff --git a/cps-application/src/test/resources/application.yml b/cps-application/src/test/resources/application.yml
new file mode 100644
index 0000000000..56363e3602
--- /dev/null
+++ b/cps-application/src/test/resources/application.yml
@@ -0,0 +1,4 @@
+security:
+  auth:
+    username: cpsuser
+    password: cpsr0cks!