164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/*-
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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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#ifndef lint
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static const char rcsid[] =
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"$Id: pwupd.c,v 1.6 1997/10/10 06:23:41 charnier Exp $";
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#endif /* not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include "pwupd.h"
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#define HAVE_PWDB_C 1
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static int
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pwdb(char *arg,...)
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{
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int i = 0;
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pid_t pid;
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va_list ap;
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char *args[8];
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args[i++] = _PATH_PWD_MKDB;
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va_start(ap, arg);
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while (i < 6 && arg != NULL) {
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args[i++] = arg;
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arg = va_arg(ap, char *);
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}
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args[i++] = _PATH_MASTERPASSWD;
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args[i] = NULL;
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if ((pid = fork()) == -1) /* Error (errno set) */
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i = -1;
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else if (pid == 0) { /* Child */
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execv(args[0], args);
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_exit(1);
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} else { /* Parent */
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waitpid(pid, &i, 0);
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if ((i = WEXITSTATUS(i)) != 0)
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errno = EIO; /* set SOMETHING */
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}
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return i;
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}
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int
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fmtpwentry(char *buf, struct passwd * pwd, int type)
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{
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int l;
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char *pw;
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pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*";
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if (type == PWF_PASSWD)
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l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n",
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pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid,
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pwd->pw_gecos ? pwd->pw_gecos : "User &",
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pwd->pw_dir, pwd->pw_shell);
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else
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l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n",
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pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid,
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pwd->pw_class ? pwd->pw_class : "",
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(unsigned long) pwd->pw_change,
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(unsigned long) pwd->pw_expire,
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pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
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return l;
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}
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int
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fmtpwent(char *buf, struct passwd * pwd)
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{
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return fmtpwentry(buf, pwd, PWF_STANDARD);
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}
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static int
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pw_update(struct passwd * pwd, char const * user, int mode)
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{
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int rc = 0;
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endpwent();
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/*
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* First, let's check the see if the database is alright
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* Note: -C is only available in FreeBSD 2.2 and above
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*/
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#ifdef HAVE_PWDB_C
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if (pwdb("-C", NULL) == 0) { /* Check only */
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#else
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{ /* No -C */
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#endif
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char pfx[32];
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char pwbuf[PWBUFSZ];
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int l = sprintf(pfx, "%s:", user);
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/*
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* Update the passwd file first
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*/
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if (pwd == NULL)
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*pwbuf = '\0';
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else
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fmtpwentry(pwbuf, pwd, PWF_PASSWD);
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if ((rc = fileupdate(_PATH_PASSWD, 0644, pwbuf, pfx, l, mode)) != 0) {
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/*
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* Then the master.passwd file
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*/
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if (pwd != NULL)
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fmtpwentry(pwbuf, pwd, PWF_MASTER);
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if ((rc = fileupdate(_PATH_MASTERPASSWD, 0644, pwbuf, pfx, l, mode)) != 0)
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rc = pwdb(NULL) == 0;
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}
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}
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return rc;
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}
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int
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addpwent(struct passwd * pwd)
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{
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return pw_update(pwd, pwd->pw_name, UPD_CREATE);
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}
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int
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chgpwent(char const * login, struct passwd * pwd)
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{
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return pw_update(pwd, login, UPD_REPLACE);
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}
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int
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delpwent(struct passwd * pwd)
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{
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return pw_update(NULL, pwd->pw_name, UPD_DELETE);
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}
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