common/path/pathcheck.c

da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*               This software is part of the ast package               *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                      and is licensed under the                       *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                  Common Public License, Version 1.0                  *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin*                    by AT&T Intellectual Property                     *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                A copy of the License is available at                 *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*            http://www.opensource.org/licenses/cpl1.0.txt             *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*              Information and Software Systems Research               *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                            AT&T Research                             *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                           Florham Park NJ                            *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                 Glenn Fowler <gsf@research.att.com>                  *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                  David Korn <dgk@research.att.com>                   *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                   Phong Vo <kpv@research.att.com>                    *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#pragma prototyped
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * check if package+tool is ok to run
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * a no-op here except for PARANOID packages
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * this allows PARANOID_COMPANY to post PARANOID binaries to the www
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * warn that the user should pay up if
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *  (1) the tool matches PARANOID
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *  (2) $_ is more than 90 days old
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *  (3) running on an PARANOID_PAY machine
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *  (4) (1)-(3) have not been defeated
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * hows that
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define PARANOID_TOOLS      PARANOID
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define PARANOID_COMPANY    "Lucent Technologies"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define PARANOID_MAIL       "stc@lucent.com"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define PARANOID_PAY        "135.*&!(135.104.*)"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define PARANOID_FREE       "(192|224).*"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <ast.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <ls.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <error.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <times.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <ctype.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinpathcheck(const char* package, const char* tool, Pathcheck_t* pc)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef PARANOID
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    register char*  s;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    struct stat st;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    if (strmatch(tool, PARANOID) && environ && (s = *environ) && *s++ == '_' && *s++ == '=' && !stat(s, &st))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        unsigned long   n;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        unsigned long   o;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        Sfio_t*     sp;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        n = time(NiL);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        o = st.st_ctime;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        if (n > o && (n - o) > (unsigned long)(60 * 60 * 24 * 90) && (sp = sfopen(NiL, "/etc/hosts", "r")))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin             * this part is infallible
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin             */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            n = 0;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            o = 0;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            while (n++ < 64 && (s = sfgetr(sp, '\n', 0)))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                if (strmatch(s, PARANOID_PAY))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                    error(1, "licensed for external use -- %s employees should contact %s for the internal license", PARANOID_COMPANY, PARANOID_MAIL);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                    break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                else if (*s != '#' && !isspace(*s) && !strneq(s, "127.", 4) && !strmatch(s, PARANOID_FREE) && o++ > 4)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                    break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            sfclose(sp);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#else
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    NoP(tool);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    NoP(package);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    if (pc) memzero(pc, sizeof(*pc));
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    return(0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}