NetBSD/usr.sbin/ypserv/mknetid/mknetid.c

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/* $NetBSD: mknetid.c,v 1.10 1999/07/25 09:01:04 lukem Exp $ */
/*
* Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se>
* 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 Mats O Jansson
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
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#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: mknetid.c,v 1.10 1999/07/25 09:01:04 lukem Exp $");
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#endif
/*
* Originally written by Mats O Jansson <moj@stacken.kth.se>
* Simplified a bit by Jason R. Thorpe <thorpej@NetBSD.ORG>
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <limits.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <util.h>
#include <rpcsvc/ypclnt.h>
#include "protos.h"
struct user {
char *usr_name; /* user name */
int usr_uid; /* user uid */
int usr_gid; /* user gid */
int gid_count; /* number of gids */
int gid[NGROUPS]; /* additional gids */
TAILQ_ENTRY(user) read; /* links in read order */
TAILQ_ENTRY(user) hash; /* links in hash order */
};
#define HASHMAX 55
void add_group __P((const char *, const char *));
void add_user __P((const char *, const char *, const char *));
int hashidx __P((char));
int isgsep __P((char));
int main __P((int, char *[]));
void print_hosts __P((const char *, const char *));
void print_netid __P((const char *));
void print_passwd_group __P((int, const char *));
void read_group __P((const char *));
void read_passwd __P((const char *));
void usage __P((void));
TAILQ_HEAD(user_list, user);
struct user_list root;
struct user_list hroot[HASHMAX];
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extern char *__progname; /* from crt0.o */
int
main(argc, argv)
int argc;
char *argv[];
{
char *HostFile = _PATH_HOSTS;
char *PasswdFile = _PATH_PASSWD;
char *GroupFile = _PATH_GROUP;
char *NetidFile = "/etc/netid";
int qflag, ch;
char *domain;
TAILQ_INIT(&root);
for (ch = 0; ch < HASHMAX; ch++)
TAILQ_INIT((&hroot[ch]));
qflag = 0;
domain = NULL;
while ((ch = getopt(argc, argv, "d:g:h:m:p:q")) != -1) {
switch (ch) {
case 'd':
domain = optarg;
break;
case 'g':
GroupFile = optarg;
break;
case 'h':
HostFile = optarg;
break;
case 'm':
NetidFile = optarg;
break;
case 'p':
PasswdFile = optarg;
break;
case 'q':
qflag++;
break;
default:
usage();
}
}
if (argc != optind)
usage();
if (domain == NULL)
if (yp_get_default_domain(&domain))
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errx(1, "Can't get YP domain name");
read_passwd(PasswdFile);
read_group(GroupFile);
print_passwd_group(qflag, domain);
print_hosts(HostFile, domain);
print_netid(NetidFile);
exit (0);
}
int
hashidx(key)
char key;
{
if (key < 'A')
return(0);
if (key <= 'Z')
return(1 + key - 'A');
if (key < 'a')
return(27);
if (key <= 'z')
return(28 + key - 'a');
return(54);
}
void
add_user(username, uid, gid)
const char *username, *uid, *gid;
{
struct user *u;
int idx;
idx = hashidx(username[0]);
u = (struct user *)malloc(sizeof(struct user));
if (u == NULL)
err(1, "can't allocate user");
memset(u, 0, sizeof(struct user));
u->usr_name = strdup(username);
if (u->usr_name == NULL)
err(1, "can't allocate user name");
u->usr_uid = atoi(uid);
u->usr_gid = atoi(gid);
u->gid_count = -1;
TAILQ_INSERT_TAIL(&root, u, read);
TAILQ_INSERT_TAIL((&hroot[idx]), u, hash);
}
void
add_group(username, gid)
const char *username, *gid;
{
struct user *u;
int g, idx;
g = atoi(gid);
idx = hashidx(username[0]);
for (u = hroot[idx].tqh_first;
u != NULL; u = u->hash.tqe_next) {
if (strcmp(username, u->usr_name) == 0) {
if (g != u->usr_gid) {
u->gid_count++;
if (u->gid_count < NGROUPS)
u->gid[u->gid_count] = g;
}
return;
}
}
}
void
read_passwd(fname)
const char *fname;
{
FILE *pfile;
size_t line_no;
int colon;
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size_t len;
char *line, *p, *k, *u, *g;
if ((pfile = fopen(fname, "r")) == NULL)
err(1, "%s", fname);
line_no = 0;
for (;
(line = fparseln(pfile, &len, &line_no, NULL, FPARSELN_UNESCALL));
free(line)) {
if (len == 0) {
warnx("%s line %lu: empty line", fname,
(unsigned long)line_no);
continue;
}
p = line;
for (k = p, colon = 0; *k != '\0'; k++)
if (*k == ':')
colon++;
if (colon != 6) {
warnx("%s line %lu: incorrect number of fields",
fname, (unsigned long)line_no);
continue;
}
k = p;
p = strchr(p, ':');
*p++ = '\0';
/* If it's a YP entry, skip it. */
if (*k == '+' || *k == '-')
continue;
/* terminate password */
p = strchr(p, ':');
*p++ = '\0';
/* terminate uid */
u = p;
p = strchr(p, ':');
*p++ = '\0';
/* terminate gid */
g = p;
p = strchr(p, ':');
*p++ = '\0';
add_user(k, u, g);
}
(void)fclose(pfile);
}
int
isgsep(ch)
char ch;
{
switch (ch) {
case ',':
case ' ':
case '\t':
case '\0':
return (1);
}
return (0);
}
void
read_group(fname)
const char *fname;
{
FILE *gfile;
size_t line_no;
int colon;
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size_t len;
char *line, *p, *k, *u, *g;
if ((gfile = fopen(fname, "r")) == NULL)
err(1, "%s", fname);
line_no = 0;
for (;
(line = fparseln(gfile, &len, &line_no, NULL, FPARSELN_UNESCALL));
free(line)) {
if (len == 0) {
warnx("%s line %lu: empty line", fname,
(unsigned long)line_no);
continue;
}
p = line;
for (k = p, colon = 0; *k != '\0'; k++)
if (*k == ':')
colon++;
if (colon != 3) {
warnx("%s line %lu: incorrect number of fields",
fname, (unsigned long)line_no);
continue;
}
/* terminate key */
k = p;
p = strchr(p, ':');
*p++ = '\0';
if (*k == '+' || *k == '-')
continue;
/* terminate password */
p = strchr(p, ':');
*p++ = '\0';
/* terminate gid */
g = p;
p = strchr(p, ':');
*p++ = '\0';
/* get the group list */
for (u = p; *u != '\0'; u = p) {
/* find separator */
for (; isgsep(*p) == 0; p++)
;
if (*p != '\0') {
*p = '\0';
if (u != p)
add_group(u, g);
p++;
} else if (u != p)
add_group(u, g);
}
}
(void)fclose(gfile);
}
void
print_passwd_group(qflag, domain)
int qflag;
const char *domain;
{
struct user *u, *p;
int i;
for (u = root.tqh_first; u != NULL; u = u->read.tqe_next) {
for (p = root.tqh_first; p->usr_uid != u->usr_uid;
p = p->read.tqe_next)
/* empty */ ;
if (p != u) {
if (!qflag) {
warnx("unix.%d@%s %s", u->usr_uid, domain,
"multiply defined, ignoring duplicate");
}
} else {
printf("unix.%d@%s %d:%d", u->usr_uid, domain,
u->usr_uid, u->usr_gid);
if (u->gid_count >= 0)
for (i = 0; i <= u->gid_count; i++)
printf(",%d", u->gid[i]);
printf("\n");
}
}
}
void
print_hosts(fname, domain)
const char *fname, *domain;
{
FILE *hfile;
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size_t len;
char *line, *p, *k, *u;
if ((hfile = fopen(fname, "r")) == NULL)
err(1, "%s", fname);
for (;
(line = fparseln(hfile, &len, NULL, NULL, FPARSELN_UNESCALL));
free(line)) {
if (len == 0)
continue;
p = line;
/* Find the key, replace trailing whitespace will <NUL> */
for (k = p; *p && isspace(*p) == 0; p++)
;
while (*p && isspace(*p))
*p++ = '\0';
/* Get first hostname. */
for (u = p; *p && !isspace(*p); p++)
;
*p = '\0';
printf("unix.%s@%s 0:%s\n", u, domain, u);
}
(void) fclose(hfile);
}
void
print_netid(fname)
const char *fname;
{
FILE *mfile;
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size_t len;
char *line, *p, *k, *u;
mfile = fopen(fname, "r");
if (mfile == NULL)
return;
for (;
(line = fparseln(mfile, &len, NULL, NULL, FPARSELN_UNESCALL));
free(line)) {
if (len == 0)
continue;
p = line;
/* Find the key, replace trailing whitespace will <NUL> */
for (k = p; *p && !isspace(*p); p++)
;
while (*p && isspace(*p))
*p++ = '\0';
/* Get netid entry. */
for (u = p; *p && !isspace(*p); p++)
;
*p = '\0';
printf("%s %s\n", k, u);
}
}
void
usage()
{
fprintf(stderr, "usage: %s %s\n", __progname,
"[-d domain] [-q] [-p passwdfile] [-g groupfile]");
fprintf(stderr, " %s %s", __progname,
"[-g groupfile] [-h hostfile] [-m netidfile]");
exit(1);
}