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