pwupd.c revision 33259
120253Sjoerg/*- 220302Sjoerg * Copyright (C) 1996 320302Sjoerg * David L. Nugent. All rights reserved. 420253Sjoerg * 520253Sjoerg * Redistribution and use in source and binary forms, with or without 620253Sjoerg * modification, are permitted provided that the following conditions 720253Sjoerg * are met: 820253Sjoerg * 1. Redistributions of source code must retain the above copyright 920302Sjoerg * notice, this list of conditions and the following disclaimer. 1020253Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 1120253Sjoerg * notice, this list of conditions and the following disclaimer in the 1220253Sjoerg * documentation and/or other materials provided with the distribution. 1320253Sjoerg * 1420302Sjoerg * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 1520253Sjoerg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1620253Sjoerg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1720302Sjoerg * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 1820253Sjoerg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1920253Sjoerg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2020253Sjoerg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2120253Sjoerg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2220253Sjoerg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2320253Sjoerg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2420253Sjoerg * SUCH DAMAGE. 2520253Sjoerg */ 2620253Sjoerg 2730259Scharnier#ifndef lint 2830259Scharnierstatic const char rcsid[] = 2933259Swosch "$Id: pwupd.c,v 1.6 1997/10/10 06:23:41 charnier Exp $"; 3030259Scharnier#endif /* not lint */ 3130259Scharnier 3220253Sjoerg#include <stdio.h> 3320253Sjoerg#include <stdlib.h> 3420253Sjoerg#include <string.h> 3520253Sjoerg#include <unistd.h> 3620253Sjoerg#include <stdarg.h> 3720253Sjoerg#include <errno.h> 3820253Sjoerg#include <sys/types.h> 3920253Sjoerg#include <sys/stat.h> 4020253Sjoerg#include <sys/wait.h> 4120253Sjoerg 4220253Sjoerg#include "pwupd.h" 4320253Sjoerg 4420267Sjoerg#define HAVE_PWDB_C 1 4520267Sjoerg 4620253Sjoergstatic int 4720253Sjoergpwdb(char *arg,...) 4820253Sjoerg{ 4920253Sjoerg int i = 0; 5020253Sjoerg pid_t pid; 5120253Sjoerg va_list ap; 5220253Sjoerg char *args[8]; 5320253Sjoerg 5420253Sjoerg args[i++] = _PATH_PWD_MKDB; 5520253Sjoerg va_start(ap, arg); 5620253Sjoerg while (i < 6 && arg != NULL) { 5720253Sjoerg args[i++] = arg; 5820253Sjoerg arg = va_arg(ap, char *); 5920253Sjoerg } 6020253Sjoerg args[i++] = _PATH_MASTERPASSWD; 6120253Sjoerg args[i] = NULL; 6220253Sjoerg 6320253Sjoerg if ((pid = fork()) == -1) /* Error (errno set) */ 6420253Sjoerg i = -1; 6520253Sjoerg else if (pid == 0) { /* Child */ 6620253Sjoerg execv(args[0], args); 6720253Sjoerg _exit(1); 6820253Sjoerg } else { /* Parent */ 6920253Sjoerg waitpid(pid, &i, 0); 7020253Sjoerg if ((i = WEXITSTATUS(i)) != 0) 7120253Sjoerg errno = EIO; /* set SOMETHING */ 7220253Sjoerg } 7320253Sjoerg return i; 7420253Sjoerg} 7520253Sjoerg 7620253Sjoergint 7720253Sjoergfmtpwentry(char *buf, struct passwd * pwd, int type) 7820253Sjoerg{ 7920253Sjoerg int l; 8020253Sjoerg char *pw; 8120253Sjoerg 8220253Sjoerg pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*"; 8320253Sjoerg 8420253Sjoerg if (type == PWF_PASSWD) 8520253Sjoerg l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n", 8620253Sjoerg pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid, 8720253Sjoerg pwd->pw_gecos ? pwd->pw_gecos : "User &", 8820253Sjoerg pwd->pw_dir, pwd->pw_shell); 8920253Sjoerg else 9020253Sjoerg l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n", 9120253Sjoerg pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid, 9220253Sjoerg pwd->pw_class ? pwd->pw_class : "", 9320253Sjoerg (unsigned long) pwd->pw_change, 9420253Sjoerg (unsigned long) pwd->pw_expire, 9520253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 9620253Sjoerg return l; 9720253Sjoerg} 9820253Sjoerg 9920253Sjoerg 10020253Sjoergint 10120253Sjoergfmtpwent(char *buf, struct passwd * pwd) 10220253Sjoerg{ 10320253Sjoerg return fmtpwentry(buf, pwd, PWF_STANDARD); 10420253Sjoerg} 10520253Sjoerg 10620253Sjoergstatic int 10720253Sjoergpw_update(struct passwd * pwd, char const * user, int mode) 10820253Sjoerg{ 10920253Sjoerg int rc = 0; 11020253Sjoerg 11120253Sjoerg endpwent(); 11220253Sjoerg 11320253Sjoerg /* 11420253Sjoerg * First, let's check the see if the database is alright 11533259Swosch * Note: -C is only available in FreeBSD 2.2 and above 11620253Sjoerg */ 11720267Sjoerg#ifdef HAVE_PWDB_C 11833259Swosch if (pwdb("-C", NULL) == 0) { /* Check only */ 11920267Sjoerg#else 12033259Swosch { /* No -C */ 12120267Sjoerg#endif 12220253Sjoerg char pfx[32]; 12320747Sdavidn char pwbuf[PWBUFSZ]; 12420253Sjoerg int l = sprintf(pfx, "%s:", user); 12520253Sjoerg 12620253Sjoerg /* 12720253Sjoerg * Update the passwd file first 12820253Sjoerg */ 12920253Sjoerg if (pwd == NULL) 13020253Sjoerg *pwbuf = '\0'; 13120253Sjoerg else 13220253Sjoerg fmtpwentry(pwbuf, pwd, PWF_PASSWD); 13320253Sjoerg if ((rc = fileupdate(_PATH_PASSWD, 0644, pwbuf, pfx, l, mode)) != 0) { 13420253Sjoerg 13520253Sjoerg /* 13620253Sjoerg * Then the master.passwd file 13720253Sjoerg */ 13820253Sjoerg if (pwd != NULL) 13920253Sjoerg fmtpwentry(pwbuf, pwd, PWF_MASTER); 14020253Sjoerg if ((rc = fileupdate(_PATH_MASTERPASSWD, 0644, pwbuf, pfx, l, mode)) != 0) 14120253Sjoerg rc = pwdb(NULL) == 0; 14220253Sjoerg } 14320253Sjoerg } 14420253Sjoerg return rc; 14520253Sjoerg} 14620253Sjoerg 14720253Sjoergint 14820253Sjoergaddpwent(struct passwd * pwd) 14920253Sjoerg{ 15020253Sjoerg return pw_update(pwd, pwd->pw_name, UPD_CREATE); 15120253Sjoerg} 15220253Sjoerg 15320253Sjoergint 15420253Sjoergchgpwent(char const * login, struct passwd * pwd) 15520253Sjoerg{ 15620253Sjoerg return pw_update(pwd, login, UPD_REPLACE); 15720253Sjoerg} 15820253Sjoerg 15920253Sjoergint 16020253Sjoergdelpwent(struct passwd * pwd) 16120253Sjoerg{ 16220253Sjoerg return pw_update(NULL, pwd->pw_name, UPD_DELETE); 16320253Sjoerg} 164