Move web security configuration to application module

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

1 files changed, 82 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);
+    }
+}