pwupd.c revision 44229
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[] = 2944229Sdavidn "$Id: pwupd.c,v 1.7 1998/02/11 23:31:24 wosch 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> 4044229Sdavidn#include <sys/param.h> 4120253Sjoerg#include <sys/wait.h> 4220253Sjoerg 4320253Sjoerg#include "pwupd.h" 4420253Sjoerg 4520267Sjoerg#define HAVE_PWDB_C 1 4620267Sjoerg 4744229Sdavidnstatic char pathpwd[] = _PATH_PWD; 4844229Sdavidnstatic char * pwpath = pathpwd; 4944229Sdavidn 5044229Sdavidnint 5144229Sdavidnsetpwdir(const char * dir) 5244229Sdavidn{ 5344229Sdavidn if (dir == NULL) 5444229Sdavidn return -1; 5544229Sdavidn else { 5644229Sdavidn char * d = malloc(strlen(dir)+1); 5744229Sdavidn if (d == NULL) 5844229Sdavidn return -1; 5944229Sdavidn pwpath = strcpy(d, dir); 6044229Sdavidn } 6144229Sdavidn return 0; 6244229Sdavidn} 6344229Sdavidn 6444229Sdavidnchar * 6544229Sdavidngetpwpath(char const * file) 6644229Sdavidn{ 6744229Sdavidn static char pathbuf[MAXPATHLEN]; 6844229Sdavidn 6944229Sdavidn snprintf(pathbuf, sizeof pathbuf, "%s/%s", pwpath, file); 7044229Sdavidn return pathbuf; 7144229Sdavidn} 7244229Sdavidn 7344229Sdavidnint 7420253Sjoergpwdb(char *arg,...) 7520253Sjoerg{ 7620253Sjoerg int i = 0; 7720253Sjoerg pid_t pid; 7820253Sjoerg va_list ap; 7944229Sdavidn char *args[10]; 8020253Sjoerg 8120253Sjoerg args[i++] = _PATH_PWD_MKDB; 8220253Sjoerg va_start(ap, arg); 8320253Sjoerg while (i < 6 && arg != NULL) { 8420253Sjoerg args[i++] = arg; 8520253Sjoerg arg = va_arg(ap, char *); 8620253Sjoerg } 8744229Sdavidn if (pwpath != pathpwd) { 8844229Sdavidn args[i++] = "-d"; 8944229Sdavidn args[i++] = pwpath; 9044229Sdavidn } 9144229Sdavidn args[i++] = getpwpath(_MASTERPASSWD); 9220253Sjoerg args[i] = NULL; 9320253Sjoerg 9420253Sjoerg if ((pid = fork()) == -1) /* Error (errno set) */ 9520253Sjoerg i = -1; 9620253Sjoerg else if (pid == 0) { /* Child */ 9720253Sjoerg execv(args[0], args); 9820253Sjoerg _exit(1); 9920253Sjoerg } else { /* Parent */ 10020253Sjoerg waitpid(pid, &i, 0); 10120253Sjoerg if ((i = WEXITSTATUS(i)) != 0) 10220253Sjoerg errno = EIO; /* set SOMETHING */ 10320253Sjoerg } 10420253Sjoerg return i; 10520253Sjoerg} 10620253Sjoerg 10720253Sjoergint 10820253Sjoergfmtpwentry(char *buf, struct passwd * pwd, int type) 10920253Sjoerg{ 11020253Sjoerg int l; 11120253Sjoerg char *pw; 11220253Sjoerg 11320253Sjoerg pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*"; 11420253Sjoerg 11520253Sjoerg if (type == PWF_PASSWD) 11620253Sjoerg l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n", 11720253Sjoerg pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid, 11820253Sjoerg pwd->pw_gecos ? pwd->pw_gecos : "User &", 11920253Sjoerg pwd->pw_dir, pwd->pw_shell); 12020253Sjoerg else 12120253Sjoerg l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n", 12220253Sjoerg pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid, 12320253Sjoerg pwd->pw_class ? pwd->pw_class : "", 12420253Sjoerg (unsigned long) pwd->pw_change, 12520253Sjoerg (unsigned long) pwd->pw_expire, 12620253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 12720253Sjoerg return l; 12820253Sjoerg} 12920253Sjoerg 13020253Sjoerg 13120253Sjoergint 13220253Sjoergfmtpwent(char *buf, struct passwd * pwd) 13320253Sjoerg{ 13420253Sjoerg return fmtpwentry(buf, pwd, PWF_STANDARD); 13520253Sjoerg} 13620253Sjoerg 13720253Sjoergstatic int 13820253Sjoergpw_update(struct passwd * pwd, char const * user, int mode) 13920253Sjoerg{ 14020253Sjoerg int rc = 0; 14120253Sjoerg 14244229Sdavidn ENDPWENT(); 14320253Sjoerg 14420253Sjoerg /* 14520253Sjoerg * First, let's check the see if the database is alright 14633259Swosch * Note: -C is only available in FreeBSD 2.2 and above 14720253Sjoerg */ 14820267Sjoerg#ifdef HAVE_PWDB_C 14933259Swosch if (pwdb("-C", NULL) == 0) { /* Check only */ 15020267Sjoerg#else 15133259Swosch { /* No -C */ 15220267Sjoerg#endif 15320253Sjoerg char pfx[32]; 15420747Sdavidn char pwbuf[PWBUFSZ]; 15520253Sjoerg int l = sprintf(pfx, "%s:", user); 15620253Sjoerg 15720253Sjoerg /* 15820253Sjoerg * Update the passwd file first 15920253Sjoerg */ 16020253Sjoerg if (pwd == NULL) 16120253Sjoerg *pwbuf = '\0'; 16220253Sjoerg else 16320253Sjoerg fmtpwentry(pwbuf, pwd, PWF_PASSWD); 16444229Sdavidn if ((rc = fileupdate(getpwpath(_PASSWD), 0644, pwbuf, pfx, l, mode)) != 0) { 16520253Sjoerg 16620253Sjoerg /* 16720253Sjoerg * Then the master.passwd file 16820253Sjoerg */ 16920253Sjoerg if (pwd != NULL) 17020253Sjoerg fmtpwentry(pwbuf, pwd, PWF_MASTER); 17144229Sdavidn if ((rc = fileupdate(getpwpath(_MASTERPASSWD), 0644, pwbuf, pfx, l, mode)) != 0) 17220253Sjoerg rc = pwdb(NULL) == 0; 17320253Sjoerg } 17420253Sjoerg } 17520253Sjoerg return rc; 17620253Sjoerg} 17720253Sjoerg 17820253Sjoergint 17920253Sjoergaddpwent(struct passwd * pwd) 18020253Sjoerg{ 18120253Sjoerg return pw_update(pwd, pwd->pw_name, UPD_CREATE); 18220253Sjoerg} 18320253Sjoerg 18420253Sjoergint 18520253Sjoergchgpwent(char const * login, struct passwd * pwd) 18620253Sjoerg{ 18720253Sjoerg return pw_update(pwd, login, UPD_REPLACE); 18820253Sjoerg} 18920253Sjoerg 19020253Sjoergint 19120253Sjoergdelpwent(struct passwd * pwd) 19220253Sjoerg{ 19320253Sjoerg return pw_update(NULL, pwd->pw_name, UPD_DELETE); 19420253Sjoerg} 195