embedaddon/thttpd/cgi-src/phf.c - view

File: [ELWIX - Embedded LightWeight unIX -] / embedaddon / thttpd / cgi-src / phf.c
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs - revision graph
Tue Feb 21 17:21:13 2012 UTC (12 years, 10 months ago) by misho
Branches: thttpd, MAIN
CVS tags: v2_25b, HEAD

thttpd

/* phf - cracker trap ** ** 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 ** and then returns a page indicating that phf doesn't exist. ** ** ** 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. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <syslog.h> #include "config.h" static char* argv0; int main( int argc, char* argv[] ) { char* cp; argv0 = argv[0]; cp = strrchr( argv0, '/' ); if ( cp != (char*) 0 ) ++cp; else cp = argv0; openlog( cp, LOG_NDELAY|LOG_PID, LOG_FACILITY ); syslog( LOG_CRIT, "phf CGI probe from %s", 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" ); exit( 0 ); }