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freebsd/libexec/mknetid/mknetid.c
Maxim Konovalov e1b57f44ef o Fix usage().
o Explicitly initialize domain pointer.
o Fix passwd file parsing.

PR:		bin/39671 (3)
MFC after:	2 weeks
2002-11-12 14:15:59 +00:00

307 lines
7.3 KiB
C

/*
* Copyright (c) 1995, 1996
* Bill Paul <wpaul@ctr.columbia.edu>. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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.
*
* netid map generator program
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Center for Telecommunications Research
* Columbia University, New York City
*/
#include <sys/types.h>
#include <rpc/rpc.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#include <err.h>
#include <grp.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "hash.h"
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#define LINSIZ 1024
#define OPSYS "unix"
/* Default location of group file. */
char *groupfile = _PATH_GROUP;
/* Default location of master.passwd file. */
char *passfile = _PATH_PASSWD;
/* Default location of hosts file. */
char *hostsfile = _PATH_HOSTS;
/* Default location of netid file */
char *netidfile = "/etc/netid";
/*
* Stored hash table of 'reverse' group member database
* which we will construct.
*/
struct member_entry *mtable[TABLESIZE];
/*
* Dupe table: used to keep track of entries so we don't
* print the same thing twice.
*/
struct member_entry *dtable[TABLESIZE];
extern struct group *_getgrent(void);
extern int _setgrent(void);
extern void _endgrent(void);
static void
usage(void)
{
fprintf (stderr, "%s\n%s\n",
"usage: mknetid [-q] [-g group_file] [-p passwd_file] [-h hosts_file]",
" [-n netid_file] [-d domain]");
exit(1);
}
extern FILE *_gr_fp;
int
main(int argc, char *argv[])
{
FILE *gfp, *pfp, *hfp, *nfp;
char readbuf[LINSIZ];
char writebuf[LINSIZ];
struct group *gr;
struct grouplist *glist;
char *domain;
int ch;
gid_t i;
char *ptr, *pidptr, *gidptr, *hptr;
int quiet = 0;
domain = NULL;
while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != -1) {
switch(ch) {
case 'g':
groupfile = optarg;
break;
case 'p':
passfile = optarg;
break;
case 'h':
hostsfile = optarg;
break;
case 'n':
netidfile = optarg;
break;
case 'd':
domain = optarg;
break;
case 'q':
quiet++;
break;
default:
usage();
break;
}
}
if (domain == NULL) {
if (yp_get_default_domain(&domain))
errx(1, "no domain name specified and default \
domain not set");
}
if ((gfp = fopen(groupfile, "r")) == NULL) {
err(1, "%s", groupfile);
}
if ((pfp = fopen(passfile, "r")) == NULL) {
err(1, "%s", passfile);
}
if ((hfp = fopen(hostsfile, "r")) == NULL) {
err(1, "%s", hostsfile);
}
if ((nfp = fopen(netidfile, "r")) == NULL) {
/* netid is optional -- just continue */
nfp = NULL;
}
_gr_fp = gfp;
/* Load all the group membership info into a hash table. */
_setgrent();
while((gr = _getgrent()) != NULL) {
while(*gr->gr_mem) {
mstore(mtable, *gr->gr_mem, gr->gr_gid, 0);
gr->gr_mem++;
}
}
fclose(gfp);
_endgrent();
/*
* Now parse the passwd database, spewing out the extra
* group information we just stored if necessary.
*/
while(fgets(readbuf, LINSIZ, pfp)) {
/* Ignore comments: ^[ \t]*# */
for (ptr = readbuf; *ptr != '\0'; ptr++)
if (*ptr != ' ' && *ptr != '\t')
break;
if (*ptr == '#' || *ptr == '\0')
continue;
if ((ptr = strchr(readbuf, ':')) == NULL) {
warnx("bad passwd file entry: %s", readbuf);
continue;
}
*ptr = '\0';
ptr++;
if ((ptr = strchr(ptr, ':')) == NULL) {
warnx("bad passwd file entry: %s", readbuf);
continue;
}
*ptr = '\0';
ptr++;
pidptr = ptr;
if ((ptr = strchr(ptr, ':')) == NULL) {
warnx("bad passwd file entry: %s", readbuf);
continue;
}
*ptr = '\0';
ptr++;
gidptr = ptr;
if ((ptr = strchr(ptr, ':')) == NULL) {
warnx("bad passwd file entry: %s", readbuf);
continue;
}
*ptr = '\0';
i = atol(gidptr);
snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
pidptr, domain);
if (lookup(dtable, writebuf)) {
if (!quiet)
warnx("duplicate netid '%s.%s@%s' -- skipping",
OPSYS, pidptr, domain);
continue;
} else {
mstore(dtable, writebuf, 0, 1);
}
printf("%s.%s@%s %s:%s", OPSYS, pidptr, domain, pidptr, gidptr);
if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) {
while(glist) {
if (glist->groupid != i)
printf(",%lu", (u_long)glist->groupid);
glist = glist->next;
}
}
printf ("\n");
}
fclose(pfp);
/*
* Now parse the hosts database (this part sucks).
*/
while ((ptr = fgets(readbuf, LINSIZ, hfp))) {
if (*ptr == '#')
continue;
if (!(hptr = strpbrk(ptr, "#\n")))
continue;
*hptr = '\0';
if (!(hptr = strpbrk(ptr, " \t")))
continue;
*hptr++ = '\0';
ptr = hptr;
while (*ptr == ' ' || *ptr == '\t')
ptr++;
if (!(hptr = strpbrk(ptr, " \t")))
continue;
*hptr++ = '\0';
snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS,
ptr, domain);
if (lookup(dtable, (char *)&writebuf)) {
if (!quiet)
warnx("duplicate netid '%s' -- skipping",
writebuf);
continue;
} else {
mstore(dtable, (char *)&writebuf, 0, 1);
}
printf ("%s.%s@%s 0:%s\n", OPSYS, ptr, domain, ptr);
}
fclose(hfp);
/*
* Lastly, copy out any extra information in the netid
* file. If it's not open, just ignore it: it's optional anyway.
*/
if (nfp != NULL) {
while(fgets(readbuf, LINSIZ, nfp)) {
if (readbuf[0] == '#')
continue;
if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) {
warnx("bad netid entry: '%s'", readbuf);
continue;
}
writebuf[0] = *ptr;
*ptr = '\0';
if (lookup(dtable, (char *)&readbuf)) {
if (!quiet)
warnx("duplicate netid '%s' -- skipping",
readbuf);
continue;
} else {
mstore(dtable, (char *)&readbuf, 0, 1);
}
*ptr = writebuf[0];
printf("%s",readbuf);
}
fclose(nfp);
}
exit(0);
}