/*-
* Copyright (C) 1996
* David L. Nugent. 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.
*
* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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.
*
* $Id$
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include "pwupd.h"
#define HAVE_PWDB_C 1
static int
pwdb(char *arg,...)
{
int i = 0;
pid_t pid;
va_list ap;
char *args[8];
args[i++] = _PATH_PWD_MKDB;
va_start(ap, arg);
while (i < 6 && arg != NULL) {
args[i++] = arg;
arg = va_arg(ap, char *);
}
args[i++] = _PATH_MASTERPASSWD;
args[i] = NULL;
if ((pid = fork()) == -1) /* Error (errno set) */
i = -1;
else if (pid == 0) { /* Child */
execv(args[0], args);
_exit(1);
} else { /* Parent */
waitpid(pid, &i, 0);
if ((i = WEXITSTATUS(i)) != 0)
errno = EIO; /* set SOMETHING */
}
return i;
}
int
fmtpwentry(char *buf, struct passwd * pwd, int type)
{
int l;
char *pw;
pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*";
if (type == PWF_PASSWD)
l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n",
pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid,
pwd->pw_gecos ? pwd->pw_gecos : "User &",
pwd->pw_dir, pwd->pw_shell);
else
l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n",
pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid,
pwd->pw_class ? pwd->pw_class : "",
(unsigned long) pwd->pw_change,
(unsigned long) pwd->pw_expire,
pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
return l;
}
int
fmtpwent(char *buf, struct passwd * pwd)
{
return fmtpwentry(buf, pwd, PWF_STANDARD);
}
static int
pw_update(struct passwd * pwd, char const * user, int mode)
{
int rc = 0;
endpwent();
/*
* First, let's check the see if the database is alright
* Note: -c is only available in FreeBSD 2.2 and above
*/
#ifdef HAVE_PWDB_C
if (pwdb("-c", NULL) == 0) { /* Check only */
#else
{ /* No -c */
#endif
char pfx[32];
char pwbuf[PWBUFSZ];
int l = sprintf(pfx, "%s:", user);
/*
* Update the passwd file first
*/
if (pwd == NULL)
*pwbuf = '\0';
else
fmtpwentry(pwbuf, pwd, PWF_PASSWD);
if ((rc = fileupdate(_PATH_PASSWD, 0644, pwbuf, pfx, l, mode)) != 0) {
/*
* Then the master.passwd file
*/
if (pwd != NULL)
fmtpwentry(pwbuf, pwd, PWF_MASTER);
if ((rc = fileupdate(_PATH_MASTERPASSWD, 0644, pwbuf, pfx, l, mode)) != 0)
rc = pwdb(NULL) == 0;
}
}
return rc;
}
int
addpwent(struct passwd * pwd)
{
return pw_update(pwd, pwd->pw_name, UPD_CREATE);
}
int
chgpwent(char const * login, struct passwd * pwd)
{
return pw_update(pwd, login, UPD_REPLACE);
}
int
delpwent(struct passwd * pwd)
{
return pw_update(NULL, pwd->pw_name, UPD_DELETE);
}
