Fix the basic auth issue which got broken

with spring boot

Issue-ID: AAI-1020
Change-Id: If99add1e401284c505bfebccfe82a94694da1a4b
Signed-off-by: Kajur, Harish (vk250x) <vk250x@att.com>

3 files changed, 183 insertions, 0 deletions

diff --git a/aai-traversal/src/main/java/org/onap/aai/TraversalApp.java b/aai-traversal/src/main/java/org/onap/aai/TraversalApp.java
index 2740439..6fdf3b0 100644
--- a/aai-traversal/src/main/java/org/onap/aai/TraversalApp.java
+++ b/aai-traversal/src/main/java/org/onap/aai/TraversalApp.java
@@ -50,6 +50,7 @@ import java.util.UUID;
 		"org.onap.aai.config",
 		"org.onap.aai.web",
 		"org.onap.aai.tasks",
+		"org.onap.aai.service",
 		"org.onap.aai.rest",
 		"com.att.ajsc.common"
 })
diff --git a/aai-traversal/src/main/java/org/onap/aai/interceptors/pre/OneWaySslAuthorization.java b/aai-traversal/src/main/java/org/onap/aai/interceptors/pre/OneWaySslAuthorization.java
new file mode 100644
index 0000000..8fe2d6e
--- /dev/null
+++ b/aai-traversal/src/main/java/org/onap/aai/interceptors/pre/OneWaySslAuthorization.java
@@ -0,0 +1,76 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aai.interceptors.pre;
+
+import org.onap.aai.exceptions.AAIException;
+import org.onap.aai.interceptors.AAIContainerFilter;
+import org.onap.aai.logging.ErrorLogHelper;
+import org.onap.aai.service.AuthorizationService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import javax.annotation.Priority;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.container.ContainerRequestFilter;
+import javax.ws.rs.container.PreMatching;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@PreMatching
+@Priority(AAIRequestFilterPriority.AUTHORIZATION)
+public class OneWaySslAuthorization extends AAIContainerFilter implements ContainerRequestFilter {
+
+    @Autowired
+    private AuthorizationService authorizationService;
+
+    @Override
+    public void filter(ContainerRequestContext containerRequestContext) throws IOException
+    {
+
+        String basicAuth = containerRequestContext.getHeaderString("Authorization");
+        List<MediaType> acceptHeaderValues = containerRequestContext.getAcceptableMediaTypes();
+
+        if(basicAuth == null || !basicAuth.startsWith("Basic ")){
+            Optional<Response> responseOptional = errorResponse("AAI_3300", acceptHeaderValues);
+            containerRequestContext.abortWith(responseOptional.get());
+            return;
+        }
+
+        basicAuth = basicAuth.replaceAll("Basic ", "");
+
+        if(!authorizationService.checkIfUserAuthorized(basicAuth)){
+            Optional<Response> responseOptional = errorResponse("AAI_3300", acceptHeaderValues);
+            containerRequestContext.abortWith(responseOptional.get());
+            return;
+        }
+
+    }
+
+    private Optional<Response> errorResponse(String errorCode, List<MediaType> acceptHeaderValues) {
+        AAIException aaie = new AAIException(errorCode);
+        return Optional.of(Response.status(aaie.getErrorObject().getHTTPResponseCode())
+                .entity(ErrorLogHelper.getRESTAPIErrorResponse(acceptHeaderValues, aaie, new ArrayList<>()))
+                .build());
+
+    }
+}
diff --git a/aai-traversal/src/main/java/org/onap/aai/service/AuthorizationService.java b/aai-traversal/src/main/java/org/onap/aai/service/AuthorizationService.java
new file mode 100644
index 0000000..616bb9c
--- /dev/null
+++ b/aai-traversal/src/main/java/org/onap/aai/service/AuthorizationService.java
@@ -0,0 +1,106 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aai.service;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import org.eclipse.jetty.util.security.Password;
+import org.onap.aai.util.AAIConstants;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Stream;
+
+@Service
+public class AuthorizationService {
+
+    private static final EELFLogger logger = EELFManager.getInstance().getLogger(AuthorizationService.class);
+
+    private final Map<String, String> authorizedUsers = new HashMap<>();
+
+    private static final Base64.Encoder ENCODER = Base64.getEncoder();
+
+    @PostConstruct
+    public void init(){
+
+        String basicAuthFile = getBasicAuthFilePath();
+
+        try(Stream<String> stream = Files.lines(Paths.get(basicAuthFile))){
+            stream.filter(line -> !line.startsWith("#")).forEach(str -> {
+                byte [] bytes = null;
+
+                String usernamePassword = null;
+                String accessType = null;
+
+                try {
+                    String [] userAccessType = str.split(",");
+
+                    if(userAccessType == null || userAccessType.length != 2){
+                        throw new RuntimeException("Please check the realm.properties file as it is not conforming to the basic auth");
+                    }
+
+                    usernamePassword = userAccessType[0];
+                    accessType       = userAccessType[1];
+
+                    String[] usernamePasswordArray = usernamePassword.split(":");
+
+                    if(usernamePasswordArray == null || usernamePasswordArray.length != 3){
+                        throw new RuntimeException("Not a valid entry for the realm.properties entry: " + usernamePassword);
+                    }
+
+                    String username = usernamePasswordArray[0];
+                    String password = null;
+
+                    if(str.contains("OBF:")){
+                        password = usernamePasswordArray[1] + ":" + usernamePasswordArray[2];
+                        password = Password.deobfuscate(password);
+                    }
+
+                    bytes = ENCODER.encode((username + ":" + password).getBytes("UTF-8"));
+
+                    authorizedUsers.put(new String(bytes), accessType);
+
+                } catch (UnsupportedEncodingException e)
+                {
+                    logger.error("Unable to support the encoding of the file" + basicAuthFile);
+                }
+
+                authorizedUsers.put(new String(ENCODER.encode(bytes)), accessType);
+            });
+        } catch (IOException e) {
+            logger.error("IO Exception occurred during the reading of realm.properties", e);
+        }
+    }
+
+    public boolean checkIfUserAuthorized(String authorization){
+        return authorizedUsers.containsKey(authorization) && "admin".equals(authorizedUsers.get(authorization));
+    }
+
+    public String getBasicAuthFilePath(){
+        return AAIConstants.AAI_HOME_ETC_AUTH + AAIConstants.AAI_FILESEP + "realm.properties";
+    }
+}