428 lines
11 KiB
C
428 lines
11 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993, 1994
|
|
* The Regents of the University of California. 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char copyright[] =
|
|
"@(#) Copyright (c) 1991, 1993, 1994\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <db.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <pwd.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "pw_scan.h"
|
|
|
|
#define INSECURE 1
|
|
#define SECURE 2
|
|
#define PERM_INSECURE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
|
|
#define PERM_SECURE (S_IRUSR|S_IWUSR)
|
|
|
|
HASHINFO openinfo = {
|
|
4096, /* bsize */
|
|
32, /* ffactor */
|
|
256, /* nelem */
|
|
2048 * 1024, /* cachesize */
|
|
NULL, /* hash() */
|
|
0 /* lorder */
|
|
};
|
|
|
|
static enum state { FILE_INSECURE, FILE_SECURE, FILE_ORIG } clean;
|
|
static struct passwd pwd; /* password structure */
|
|
static char *pname; /* password file name */
|
|
static char prefix[MAXPATHLEN];
|
|
|
|
void cleanup __P((void));
|
|
void error __P((char *));
|
|
void mv __P((char *, char *));
|
|
int scan __P((FILE *, struct passwd *));
|
|
void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
DB *dp, *edp;
|
|
DBT data, key;
|
|
FILE *fp, *oldfp;
|
|
sigset_t set;
|
|
int ch, cnt, len, makeold, tfd, yp_enabled = 0;
|
|
char *p, *t;
|
|
char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
|
|
char buf2[MAXPATHLEN];
|
|
|
|
strcpy(prefix, _PATH_PWD);
|
|
makeold = 0;
|
|
while ((ch = getopt(argc, argv, "d:pv")) != EOF)
|
|
switch(ch) {
|
|
case 'd':
|
|
strcpy(prefix, optarg);
|
|
break;
|
|
case 'p': /* create V7 "file.orig" */
|
|
makeold = 1;
|
|
break;
|
|
case 'v': /* backward compatible */
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
/*
|
|
* This could be changed to allow the user to interrupt.
|
|
* Probably not worth the effort.
|
|
*/
|
|
sigemptyset(&set);
|
|
sigaddset(&set, SIGTSTP);
|
|
sigaddset(&set, SIGHUP);
|
|
sigaddset(&set, SIGINT);
|
|
sigaddset(&set, SIGQUIT);
|
|
sigaddset(&set, SIGTERM);
|
|
(void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
|
|
|
|
/* We don't care what the user wants. */
|
|
(void)umask(0);
|
|
|
|
pname = *argv;
|
|
/* Open the original password file */
|
|
if (!(fp = fopen(pname, "r")))
|
|
error(pname);
|
|
|
|
/* Open the temporary insecure password database. */
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);
|
|
dp = dbopen(buf,
|
|
O_RDWR|O_CREAT|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
|
|
if (dp == NULL)
|
|
error(buf);
|
|
clean = FILE_INSECURE;
|
|
|
|
/*
|
|
* Open file for old password file. Minor trickiness -- don't want to
|
|
* chance the file already existing, since someone (stupidly) might
|
|
* still be using this for permission checking. So, open it first and
|
|
* fdopen the resulting fd. The resulting file should be readable by
|
|
* everyone.
|
|
*/
|
|
if (makeold) {
|
|
(void)snprintf(buf, sizeof(buf), "%s.orig", pname);
|
|
if ((tfd = open(buf,
|
|
O_WRONLY|O_CREAT|O_EXCL, PERM_INSECURE)) < 0)
|
|
error(buf);
|
|
if ((oldfp = fdopen(tfd, "w")) == NULL)
|
|
error(buf);
|
|
clean = FILE_ORIG;
|
|
}
|
|
|
|
/*
|
|
* The databases actually contain three copies of the original data.
|
|
* Each password file entry is converted into a rough approximation
|
|
* of a ``struct passwd'', with the strings placed inline. This
|
|
* object is then stored as the data for three separate keys. The
|
|
* first key * is the pw_name field prepended by the _PW_KEYBYNAME
|
|
* character. The second key is the pw_uid field prepended by the
|
|
* _PW_KEYBYUID character. The third key is the line number in the
|
|
* original file prepended by the _PW_KEYBYNUM character. (The special
|
|
* characters are prepended to ensure that the keys do not collide.)
|
|
*/
|
|
data.data = (u_char *)buf;
|
|
key.data = (u_char *)tbuf;
|
|
for (cnt = 1; scan(fp, &pwd); ++cnt) {
|
|
if(pwd.pw_name[0] == '+') {
|
|
if(pwd.pw_name[1] && !yp_enabled) {
|
|
yp_enabled = 1;
|
|
} else if(!pwd.pw_name[1]) {
|
|
yp_enabled = -1;
|
|
}
|
|
}
|
|
#define COMPACT(e) t = e; while (*p++ = *t++);
|
|
/* Create insecure data. */
|
|
p = buf;
|
|
COMPACT(pwd.pw_name);
|
|
COMPACT("*");
|
|
memmove(p, &pwd.pw_uid, sizeof(int));
|
|
p += sizeof(int);
|
|
memmove(p, &pwd.pw_gid, sizeof(int));
|
|
p += sizeof(int);
|
|
memmove(p, &pwd.pw_change, sizeof(time_t));
|
|
p += sizeof(time_t);
|
|
COMPACT(pwd.pw_class);
|
|
COMPACT(pwd.pw_gecos);
|
|
COMPACT(pwd.pw_dir);
|
|
COMPACT(pwd.pw_shell);
|
|
memmove(p, &pwd.pw_expire, sizeof(time_t));
|
|
p += sizeof(time_t);
|
|
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
|
|
p += sizeof pwd.pw_fields;
|
|
data.size = p - buf;
|
|
|
|
/* Store insecure by name. */
|
|
tbuf[0] = _PW_KEYBYNAME;
|
|
len = strlen(pwd.pw_name);
|
|
memmove(tbuf + 1, pwd.pw_name, len);
|
|
key.size = len + 1;
|
|
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
|
|
/* Store insecure by number. */
|
|
tbuf[0] = _PW_KEYBYNUM;
|
|
memmove(tbuf + 1, &cnt, sizeof(cnt));
|
|
key.size = sizeof(cnt) + 1;
|
|
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
|
|
/* Store insecure by uid. */
|
|
tbuf[0] = _PW_KEYBYUID;
|
|
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
|
|
key.size = sizeof(pwd.pw_uid) + 1;
|
|
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
|
|
/* Create original format password file entry */
|
|
if (makeold)
|
|
(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
|
|
pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos,
|
|
pwd.pw_dir, pwd.pw_shell);
|
|
}
|
|
/* If YP enabled, set flag. */
|
|
if(yp_enabled) {
|
|
buf[0] = yp_enabled + 2;
|
|
data.size = 1;
|
|
tbuf[0] = _PW_KEYYPENABLED;
|
|
key.size = 1;
|
|
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
}
|
|
|
|
(void)(dp->close)(dp);
|
|
if (makeold) {
|
|
(void)fflush(oldfp);
|
|
(void)fclose(oldfp);
|
|
}
|
|
|
|
/* Open the temporary encrypted password database. */
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB);
|
|
edp = dbopen(buf,
|
|
O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
|
|
if (!edp)
|
|
error(buf);
|
|
clean = FILE_SECURE;
|
|
|
|
rewind(fp);
|
|
for (cnt = 1; scan(fp, &pwd); ++cnt) {
|
|
|
|
/* Create secure data. */
|
|
p = buf;
|
|
COMPACT(pwd.pw_name);
|
|
COMPACT(pwd.pw_passwd);
|
|
memmove(p, &pwd.pw_uid, sizeof(int));
|
|
p += sizeof(int);
|
|
memmove(p, &pwd.pw_gid, sizeof(int));
|
|
p += sizeof(int);
|
|
memmove(p, &pwd.pw_change, sizeof(time_t));
|
|
p += sizeof(time_t);
|
|
COMPACT(pwd.pw_class);
|
|
COMPACT(pwd.pw_gecos);
|
|
COMPACT(pwd.pw_dir);
|
|
COMPACT(pwd.pw_shell);
|
|
memmove(p, &pwd.pw_expire, sizeof(time_t));
|
|
p += sizeof(time_t);
|
|
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
|
|
p += sizeof pwd.pw_fields;
|
|
data.size = p - buf;
|
|
|
|
/* Store secure by name. */
|
|
tbuf[0] = _PW_KEYBYNAME;
|
|
len = strlen(pwd.pw_name);
|
|
memmove(tbuf + 1, pwd.pw_name, len);
|
|
key.size = len + 1;
|
|
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
|
|
/* Store secure by number. */
|
|
tbuf[0] = _PW_KEYBYNUM;
|
|
memmove(tbuf + 1, &cnt, sizeof(cnt));
|
|
key.size = sizeof(cnt) + 1;
|
|
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
|
|
/* Store secure by uid. */
|
|
tbuf[0] = _PW_KEYBYUID;
|
|
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
|
|
key.size = sizeof(pwd.pw_uid) + 1;
|
|
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
}
|
|
/* If YP enabled, set flag. */
|
|
if(yp_enabled) {
|
|
buf[0] = yp_enabled + 2;
|
|
data.size = 1;
|
|
tbuf[0] = _PW_KEYYPENABLED;
|
|
key.size = 1;
|
|
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
|
|
error("put");
|
|
}
|
|
|
|
(void)(edp->close)(edp);
|
|
|
|
/* Set master.passwd permissions, in case caller forgot. */
|
|
(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
|
|
(void)fclose(fp);
|
|
|
|
/* Install as the real password files. */
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);
|
|
(void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _MP_DB);
|
|
mv(buf, buf2);
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB);
|
|
(void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _SMP_DB);
|
|
mv(buf, buf2);
|
|
if (makeold) {
|
|
(void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _PASSWD);
|
|
(void)snprintf(buf, sizeof(buf), "%s.orig", pname);
|
|
mv(buf, buf2);
|
|
}
|
|
/*
|
|
* Move the master password LAST -- chpass(1), passwd(1) and vipw(8)
|
|
* all use flock(2) on it to block other incarnations of themselves.
|
|
* The rename means that everything is unlocked, as the original file
|
|
* can no longer be accessed.
|
|
*/
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s", prefix, _MASTERPASSWD);
|
|
mv(pname, buf);
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
scan(fp, pw)
|
|
FILE *fp;
|
|
struct passwd *pw;
|
|
{
|
|
static int lcnt;
|
|
static char line[LINE_MAX];
|
|
char *p;
|
|
|
|
if (!fgets(line, sizeof(line), fp))
|
|
return (0);
|
|
++lcnt;
|
|
/*
|
|
* ``... if I swallow anything evil, put your fingers down my
|
|
* throat...''
|
|
* -- The Who
|
|
*/
|
|
if (!(p = strchr(line, '\n'))) {
|
|
warnx("line too long");
|
|
goto fmt;
|
|
|
|
}
|
|
*p = '\0';
|
|
if (!pw_scan(line, pw)) {
|
|
warnx("at line #%d", lcnt);
|
|
fmt: errno = EFTYPE; /* XXX */
|
|
error(pname);
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
mv(from, to)
|
|
char *from, *to;
|
|
{
|
|
char buf[MAXPATHLEN];
|
|
|
|
if (rename(from, to)) {
|
|
int sverrno = errno;
|
|
(void)snprintf(buf, sizeof(buf), "%s to %s", from, to);
|
|
errno = sverrno;
|
|
error(buf);
|
|
}
|
|
}
|
|
|
|
void
|
|
error(name)
|
|
char *name;
|
|
{
|
|
|
|
warn(name);
|
|
cleanup();
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
cleanup()
|
|
{
|
|
char buf[MAXPATHLEN];
|
|
|
|
switch(clean) {
|
|
case FILE_ORIG:
|
|
(void)snprintf(buf, sizeof(buf), "%s.orig", pname);
|
|
(void)unlink(buf);
|
|
/* FALLTHROUGH */
|
|
case FILE_SECURE:
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB);
|
|
(void)unlink(buf);
|
|
/* FALLTHROUGH */
|
|
case FILE_INSECURE:
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);
|
|
(void)unlink(buf);
|
|
}
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
|
|
(void)fprintf(stderr, "usage: pwd_mkdb [-p] [-d <dest dir>] file\n");
|
|
exit(1);
|
|
}
|