| /**************************************************************************** |
| * netutils/thttpd/cgi-src/phf.c |
| * Cracker trap |
| * |
| * Copyright (C) 2009, 2015 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <gnutt@nuttx.org> |
| * |
| * Derived from the file of the same name in the original THTTPD package: |
| * |
| * Copyright © 1996 by Jef Poskanzer <jef@mail.acme.com>. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| ****************************************************************************/ |
| |
| /* Old distributions of the NCSA and Apache web servers included a |
| * version of the phf program that had a bug. The program could |
| * easily be made to run arbitrary shell commands. There is no real |
| * legitimate use for phf, so any attempts to run it must be considered |
| * to be attacks. Accordingly, this version of phf logs the attack |
| * on stderr and then returns a page on CONFIG_THTTPD_CGI_OUTFD indicating |
| * that phf doesn't exist. |
| */ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "config.h" |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| #ifdef CONFIG_THTTPD_BINFS |
| int phf_main(int argc, char *argv[]) |
| #else |
| int main(int argc, char *argv[]) |
| #endif |
| { |
| fprintf(stderr, "phf CGI probe from %s\n", getenv("REMOTE_ADDR")); |
| |
| (void)printf("\ |
| Content-type: text/html\n\ |
| Status: 404/html\n\ |
| \n\ |
| <HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD>\n\ |
| <BODY><H2>404 Not Found</H2>\n\ |
| The requested object does not exist on this server.\n\ |
| The link you followed is either outdated, inaccurate,\n\ |
| or the server has been instructed not to let you have it.\n\ |
| </BODY></HTML>\n"); |
| return 0; |
| } |
