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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 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.openecomp.sdc.be.filters;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import fj.data.Either;
import org.apache.commons.codec.binary.Base64;
import org.openecomp.sdc.be.components.impl.ConsumerBusinessLogic;
import org.openecomp.sdc.be.dao.api.ActionStatus;
import org.openecomp.sdc.be.impl.ComponentsUtils;
import org.openecomp.sdc.be.impl.WebAppContextWrapper;
import org.openecomp.sdc.be.model.ConsumerDefinition;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.log.enums.LogLevel;
import org.openecomp.sdc.common.log.enums.Severity;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.common.log.wrappers.LoggerSdcAudit;
import org.openecomp.sdc.exception.ResponseFormat;
import org.openecomp.sdc.security.Passwords;
import org.springframework.web.context.WebApplicationContext;
import javax.annotation.Priority;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
import javax.ws.rs.core.Response.Status;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.StringTokenizer;
@Priority(10)
public class BasicAuthenticationFilter implements ContainerRequestFilter {
private static LoggerSdcAudit audit = new LoggerSdcAudit(BasicAuthenticationFilter.class);
private static final Logger log = Logger.getLogger(BasicAuthenticationFilter.class);
private static final String COMPONENT_UTILS_FAILED = "Authentication Filter Failed to get component utils.";
private static final String CONSUMER_BL_FAILED = "Authentication Filter Failed to get consumerBL.";
@Context
private HttpServletRequest sr;
protected Gson gson = new GsonBuilder().setPrettyPrinting().create();
private String realm = "ASDC";
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
audit.startLog(requestContext);
String authHeader = requestContext.getHeaderString(Constants.AUTHORIZATION_HEADER);
if (authHeader != null) {
StringTokenizer st = new StringTokenizer(authHeader);
String failedToRetrieveAuthErrorMsg = "Authentication Filter Failed Couldn't retrieve authentication, no basic authentication.";
if (st.hasMoreTokens()) {
String basic = st.nextToken();
if ("Basic".equalsIgnoreCase(basic)) {
try {
String credentials = new String(Base64.decodeBase64(st.nextToken()), "UTF-8");
log.debug("Credentials: {}", credentials);
checkUserCredentials(requestContext, credentials);
} catch (UnsupportedEncodingException e) {
log.error("Authentication Filter Failed Couldn't retrieve authentication", e);
authInvalidHeaderError(requestContext);
}
} else {
log.error(failedToRetrieveAuthErrorMsg);
authInvalidHeaderError(requestContext);
}
} else {
log.error(failedToRetrieveAuthErrorMsg);
authInvalidHeaderError(requestContext);
}
} else {
log.error("Authentication Filter Failed no authorization header");
authRequiredError(requestContext);
}
}
private void checkUserCredentials(ContainerRequestContext requestContext, String credentials) {
int p = credentials.indexOf(':');
if (p != -1) {
String userName = credentials.substring(0, p).trim();
String password = credentials.substring(p + 1).trim();
ConsumerBusinessLogic consumerBL = getConsumerBusinessLogic();
if (consumerBL == null) {
abortWith(requestContext, CONSUMER_BL_FAILED, Response.serverError().status(Status.INTERNAL_SERVER_ERROR).build());
} else {
Either<ConsumerDefinition, ResponseFormat> result = consumerBL.getConsumer(userName);
validatePassword(requestContext, userName, password, result);
}
} else {
log.error("Authentication Filter Failed Couldn't retrieve authentication, no basic authentication.");
authInvalidHeaderError(requestContext);
}
}
private void validatePassword(ContainerRequestContext requestContext, String userName, String password, Either<ConsumerDefinition, ResponseFormat> result) {
if (result.isRight()) {
Integer status = result.right().value().getStatus();
if (status == Status.NOT_FOUND.getStatusCode()) {
log.error("Authentication Filter Failed Couldn't find user");
authUserNotFoundError(requestContext, userName);
} else {
abortWith(requestContext, CONSUMER_BL_FAILED, Response.serverError().status(Status.INTERNAL_SERVER_ERROR).build());
}
} else {
ConsumerDefinition consumerCredentials = result.left().value();
if (!Passwords.isExpectedPassword(password, consumerCredentials.getConsumerSalt(), consumerCredentials.getConsumerPassword())) {
log.error("Authentication Filter Failed invalid password");
authInvalidPasswordError(requestContext, userName);
} else {
authSuccessful(requestContext, userName);
}
}
}
private void authSuccessful(ContainerRequestContext requestContext, String userName) {
ComponentsUtils componentUtils = getComponentsUtils();
if (componentUtils == null) {
abortWith(requestContext, COMPONENT_UTILS_FAILED, Response.status(Status.INTERNAL_SERVER_ERROR).build());
}
componentUtils.auditAuthEvent(requestContext.getUriInfo().getPath(), userName, AuthStatus.AUTH_SUCCESS.toString(), realm);
}
private void authInvalidPasswordError(ContainerRequestContext requestContext, String userName) {
ComponentsUtils componentUtils = getComponentsUtils();
if (componentUtils == null) {
abortWith(requestContext, COMPONENT_UTILS_FAILED, Response.status(Status.INTERNAL_SERVER_ERROR).build());
}
componentUtils.auditAuthEvent(requestContext.getUriInfo().getPath(), userName, AuthStatus.AUTH_FAILED_INVALID_PASSWORD.toString(), realm);
ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.AUTH_FAILED);
abortWith(requestContext, responseFormat.getFormattedMessage(), buildErrorResponse(responseFormat, false));
}
private void authUserNotFoundError(ContainerRequestContext requestContext, String userName) {
ComponentsUtils componentUtils = getComponentsUtils();
if (componentUtils == null) {
abortWith(requestContext, COMPONENT_UTILS_FAILED, Response.status(Status.INTERNAL_SERVER_ERROR).build());
}
getComponentsUtils().auditAuthEvent(requestContext.getUriInfo().getPath(), userName, AuthStatus.AUTH_FAILED_USER_NOT_FOUND.toString(), realm);
ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.AUTH_FAILED);
abortWith(requestContext, responseFormat.getFormattedMessage(), buildErrorResponse(responseFormat, false));
}
private void authInvalidHeaderError(ContainerRequestContext requestContext) {
ComponentsUtils componentUtils = getComponentsUtils();
if (componentUtils == null) {
abortWith(requestContext, COMPONENT_UTILS_FAILED, Response.status(Status.INTERNAL_SERVER_ERROR).build());
}
getComponentsUtils().auditAuthEvent(requestContext.getUriInfo().getPath(), "", AuthStatus.AUTH_FAILED_INVALID_AUTHENTICATION_HEADER.toString(), realm);
ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.AUTH_FAILED_INVALIDE_HEADER);
abortWith(requestContext, responseFormat.getFormattedMessage(), buildErrorResponse(responseFormat, false));
}
private void authRequiredError(ContainerRequestContext requestContext) {
ComponentsUtils componentUtils = getComponentsUtils();
if (componentUtils == null) {
abortWith(requestContext, COMPONENT_UTILS_FAILED, Response.status(Status.INTERNAL_SERVER_ERROR).build());
}
getComponentsUtils().auditAuthEvent(requestContext.getUriInfo().getPath(), "", AuthStatus.AUTH_REQUIRED.toString(), realm);
ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.AUTH_REQUIRED);
abortWith(requestContext, responseFormat.getFormattedMessage(), buildErrorResponse(responseFormat, true));
}
private ComponentsUtils getComponentsUtils() {
ServletContext context = sr.getSession().getServletContext();
WebAppContextWrapper webApplicationContextWrapper = (WebAppContextWrapper) context.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR);
WebApplicationContext webApplicationContext = webApplicationContextWrapper.getWebAppContext(context);
return webApplicationContext.getBean(ComponentsUtils.class);
}
private ConsumerBusinessLogic getConsumerBusinessLogic() {
ServletContext context = sr.getSession().getServletContext();
WebAppContextWrapper webApplicationContextWrapper = (WebAppContextWrapper) context.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR);
WebApplicationContext webApplicationContext = webApplicationContextWrapper.getWebAppContext(context);
return webApplicationContext.getBean(ConsumerBusinessLogic.class);
}
public enum AuthStatus {
AUTH_REQUIRED, AUTH_FAILED_USER_NOT_FOUND, AUTH_FAILED_INVALID_PASSWORD, AUTH_FAILED_INVALID_AUTHENTICATION_HEADER, AUTH_SUCCESS
}
protected Response buildErrorResponse(ResponseFormat requestErrorWrapper, boolean addWwwAuthenticationHeader) {
ResponseBuilder responseBuilder = Response.status(requestErrorWrapper.getStatus());
if (addWwwAuthenticationHeader) {
responseBuilder = responseBuilder.header("WWW-Authenticate", "Basic realm=\"" + realm + "\"");
}
return responseBuilder.entity(gson.toJson(requestErrorWrapper.getRequestError())).build();
}
private void abortWith(ContainerRequestContext requestContext, String message, Response response) {
audit.log(sr.getRemoteAddr(),
requestContext,
response.getStatusInfo(),
LogLevel.ERROR,
Severity.WARNING,
message);
log.error(message);
audit.clearMyData();
requestContext.abortWith(response);
}
}
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