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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/path/pathcheck.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * check if package+tool is ok to run

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 * a no-op here except for PARANOID packages

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 * this allows PARANOID_COMPANY to post PARANOID binaries to the www

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 *

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 * warn that the user should pay up if

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 *

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 *	(1) the tool matches PARANOID

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 *	(2) $_ is more than 90 days old

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 *	(3) running on an PARANOID_PAY machine

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 *	(4) (1)-(3) have not been defeated

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 *

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 * hows that

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 */

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#define PARANOID_TOOLS		PARANOID

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#define PARANOID_COMPANY	"Lucent Technologies"

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#define PARANOID_MAIL		"[email protected]"

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#define PARANOID_PAY		"135.*&!(135.104.*)"

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#define PARANOID_FREE		"(192|224).*"

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#include <ast.h>

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#include <ls.h>

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#include <error.h>

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#include <times.h>

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#include <ctype.h>

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int

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pathcheck(const char* package, const char* tool, Pathcheck_t* pc)

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{

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#ifdef PARANOID

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	register char*	s;

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	struct stat	st;

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	if (strmatch(tool, PARANOID) && environ && (s = *environ) && *s++ == '_' && *s++ == '=' && !stat(s, &st))

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	{

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		unsigned long	n;

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		unsigned long	o;

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		Sfio_t*		sp;

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		n = time(NiL);

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		o = st.st_ctime;

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		if (n > o && (n - o) > (unsigned long)(60 * 60 * 24 * 90) && (sp = sfopen(NiL, "/etc/hosts", "r")))

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		{

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			/*

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			 * this part is infallible

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			 */

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			n = 0;

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			o = 0;

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			while (n++ < 64 && (s = sfgetr(sp, '\n', 0)))

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				if (strmatch(s, PARANOID_PAY))

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				{

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					error(1, "licensed for external use -- %s employees should contact %s for the internal license", PARANOID_COMPANY, PARANOID_MAIL);

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					break;

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				}

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				else if (*s != '#' && !isspace(*s) && !strneq(s, "127.", 4) && !strmatch(s, PARANOID_FREE) && o++ > 4)

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					break;

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			sfclose(sp);

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		}

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	}

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#else

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	NoP(tool);

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#endif

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	NoP(package);

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	if (pc) memzero(pc, sizeof(*pc));

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	return(0);

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}

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