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package org.openecomp.sdc.itempermissions.servlet;
import org.openecomp.sdc.itempermissions.PermissionsServices;
import org.openecomp.sdc.itempermissions.PermissionsServicesFactory;
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.HttpServletResponse;
import java.io.IOException;
/**
* Created by ayalaben on 6/27/2017.
*/
public class PermissionsFilter implements Filter {
private final PermissionsServices permissionsServices;
public static final String IRRELEVANT_REQUEST = "Irrelevant_Request";
public static final String EDIT_ITEM = "Edit_Item";
public PermissionsFilter() {
this.permissionsServices = PermissionsServicesFactory.getInstance().createInterface();
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
FilterChain filterChain) throws IOException, ServletException {
if (servletRequest instanceof HttpServletRequest) {
if (((HttpServletRequest) servletRequest).getMethod().equals("POST")
|| ((HttpServletRequest) servletRequest).getMethod().equals("PUT")) {
String userId = ((HttpServletRequest) servletRequest).getHeader("USER_ID");
String itemId = parseItemIdFromPath(((HttpServletRequest) servletRequest).getPathInfo());
if ( ! itemId.equals(IRRELEVANT_REQUEST)) {
if ( ! permissionsServices.isAllowed(itemId,userId,EDIT_ITEM)) {
((HttpServletResponse) servletResponse).setStatus(HttpServletResponse.SC_FORBIDDEN);
servletResponse.getWriter().print("Permissions Error. The user does not have " +
"permission to perform" +
" this action.");
return;
}
}
}
}
filterChain.doFilter(servletRequest, servletResponse);
}
private String parseItemIdFromPath(String pathInfo) {
String[] tokens = pathInfo.split("/");
if (tokens.length < 4) {
return IRRELEVANT_REQUEST;
} else {
return tokens[3];
}
}
@Override
public void destroy() {
}
}
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