GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/amd/amd/info_passwd.c Lines: 0 41 0.0 %
Date: 2017-11-13 Branches: 0 24 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 1990 Jan-Simon Pendry
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 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Jan-Simon Pendry at Imperial College, London.
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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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 * 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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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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 *	from: @(#)info_passwd.c	8.1 (Berkeley) 6/6/93
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 *	$Id: info_passwd.c,v 1.10 2015/12/05 21:15:01 mmcc Exp $
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 */
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/*
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 * Get info from password "file"
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 *
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 * This is experimental and probably doesn't
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 * do what you expect.
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 */
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#include "am.h"
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#include <pwd.h>
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#define	PASSWD_MAP	"/etc/passwd"
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/*
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 * Nothing to probe - check the map name is PASSWD_MAP.
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 */
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int
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passwd_init(char *map, time_t *tp)
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{
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	*tp = 0;
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	return strcmp(map, PASSWD_MAP) == 0 ? 0 : ENOENT;
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}
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/*
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 * Grab the entry via the getpwname routine
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 * Modify time is ignored by passwd - XXX
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 */
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int
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passwd_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
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{
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	struct passwd *pw;
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	char *dir = 0;
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	if (strcmp(key, "/defaults") == 0) {
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		*pval = strdup("type:=nfs");
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		return 0;
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	}
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	pw = getpwnam(key);
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	if (pw) {
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		/*
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		 * We chop the home directory up as follows:
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		 * /anydir/dom1/dom2/dom3/user
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		 *
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		 * and return
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		 * rfs:=/anydir/dom3;rhost:=dom3.dom2.dom1;sublink:=user
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		 *
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		 * This allows cross-domain entries in your passwd file.
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		 * ... but forget about security!
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		 */
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		char val[MAXPATHLEN], rhost[MAXHOSTNAMELEN];
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		char *user, *p, *q;
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		dir = strdup(pw->pw_dir);
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		/*
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		 * Find user name.  If no / then Invalid...
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		 */
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		user = strrchr(dir, '/');
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		if (!user)
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			goto enoent;
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		*user++ = '\0';
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		/*
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		 * Find start of host "path".  If no / then Invalid...
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		 */
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		p = strchr(dir+1, '/');
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		if (!p)
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			goto enoent;
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		*p++ = '\0';
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		/*
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		 * At this point, p is dom1/dom2/dom3
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		 * Copy, backwards, into rhost replacing
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		 * / with .
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		 */
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		rhost[0] = '\0';
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		do {
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			q = strrchr(p, '/');
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			if (q) {
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				strlcat(rhost, q + 1, sizeof(rhost));
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				strlcat(rhost, ".", sizeof(rhost));
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				*q = '\0';
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			} else {
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				strlcat(rhost, p, sizeof(rhost));
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			}
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		} while (q);
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		/*
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		 * Sanity check
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		 */
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		if (*rhost == '\0' || *user == '\0' || *dir == '\0')
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			goto enoent;
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		/*
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		 * Make up return string
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		 */
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		q = strchr(rhost, '.');
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		if (q)
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			*q = '\0';
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		snprintf(val, sizeof(val),
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		    "rfs:=%s/%s;rhost:=%s;sublink:=%s;fs:=${autodir}%s",
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		    dir, rhost, rhost, user, pw->pw_dir);
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		free(dir);
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		if (q)
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			*q = '.';
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		*pval = strdup(val);
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		return 0;
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	}
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enoent:
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	free(dir);
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	return ENOENT;
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}