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/*
* Copyright © 2018 European Support Limited
*
* 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 org.openecomp.server.filters;
import java.io.IOException;
import java.security.Principal;
import java.util.Base64;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
public class ActionAuthenticationFilter implements Filter {
private final Logger log = (Logger) LoggerFactory.getLogger(this.getClass().getName());
private boolean runningOnLocal = true;
@Override
public void destroy() {
// TODO Auto-generated method stub
}
@Override
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
if (runningOnLocal) {
HttpServletRequest httpRequest = (HttpServletRequest) arg0;
String authorizationHeader = httpRequest.getHeader("Authorization");
if (authorizationHeader != null && !authorizationHeader.isEmpty()) {
String username;
try {
String base64Credentials = httpRequest.getHeader("Authorization").replace("Basic", "").trim();
String decodedCredentials = new String(Base64.getDecoder().decode(base64Credentials));
username = decodedCredentials.substring(0, decodedCredentials.indexOf(":"));
} catch (Exception exception) {
log.error("Failed to decode credentials", exception);
setResponseStatus((HttpServletResponse) arg1, HttpServletResponse.SC_FORBIDDEN);
return;
}
if (username.startsWith("AUTH")) {
HttpServletRequestWrapper servletRequest = new HttpServletRequestWrapper(httpRequest) {
@Override
public java.lang.String getRemoteUser() {
return getUserPrincipal().getName();
}
@Override
public Principal getUserPrincipal() {
return () -> username.substring(0, username.indexOf("-"));
}
@Override
public boolean isUserInRole(String role) {
try {
ActionLibraryPrivilege requiredPrivilege = ActionLibraryPrivilege.getPrivilege(httpRequest.getMethod());
ActionLibraryPrivilege userPrivilege = ActionLibraryPrivilege
.valueOf(username.substring(username.indexOf("-") + 1).toUpperCase());
return userPrivilege.ordinal() >= requiredPrivilege.ordinal();
} catch (Exception exception) {
log.error("Failed to validate UserInRole", exception);
return false;
}
}
};
arg2.doFilter(servletRequest, arg1);
} else {
setResponseStatus((HttpServletResponse) arg1, HttpServletResponse.SC_FORBIDDEN);
}
} else {
setResponseStatus((HttpServletResponse) arg1, HttpServletResponse.SC_UNAUTHORIZED);
}
} else {
//call super doFilter of cadi authentication filter
}
}
private void setResponseStatus(HttpServletResponse response, int status) {
response.setStatus(status);
}
@Override
public void init(FilterConfig arg0) throws ServletException {
}
}
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