public void doFilter()

in src/main/java/org/apache/sling/security/impl/ReferrerFilter.java [328:346]

• 16 lines of code
• 6 McCabe index (conditional complexity)

    public void doFilter(final ServletRequest req,
                         final ServletResponse res,
                         final FilterChain chain)
            throws IOException, ServletException {
        if (req instanceof HttpServletRequest && res instanceof HttpServletResponse) {
            final HttpServletRequest request = (HttpServletRequest) req;

            // is this a modification request from a browser
            if (this.isBrowserRequest(request) && this.isModification(request)) {
                if (!this.isValidRequest(request)) {
                    final HttpServletResponse response = (HttpServletResponse) res;
                    // we use 403
                    response.sendError(403);
                    return;
                }
            }
        }
        chain.doFilter(req, res);
    }