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[] = 2950479Speter "$FreeBSD: stable/10/usr.sbin/pw/pwupd.c 310173 2016-12-16 20:10:55Z asomers $"; 3030259Scharnier#endif /* not lint */ 3130259Scharnier 32287084Sbapt#include <sys/wait.h> 33287084Sbapt 34287084Sbapt#include <err.h> 35287084Sbapt#include <errno.h> 36287084Sbapt#include <pwd.h> 37287084Sbapt#include <libutil.h> 3820253Sjoerg#include <stdio.h> 3920253Sjoerg#include <stdlib.h> 4020253Sjoerg#include <string.h> 4120253Sjoerg#include <unistd.h> 4220253Sjoerg 4320253Sjoerg#include "pwupd.h" 4420253Sjoerg 4544229Sdavidnchar * 4644229Sdavidngetpwpath(char const * file) 4744229Sdavidn{ 4844229Sdavidn static char pathbuf[MAXPATHLEN]; 4944229Sdavidn 50285092Sbapt snprintf(pathbuf, sizeof pathbuf, "%s/%s", conf.etcpath, file); 51285092Sbapt 52285092Sbapt return (pathbuf); 5344229Sdavidn} 5444229Sdavidn 55242349Sbaptstatic int 56285092Sbaptpwdb_check(void) 5720253Sjoerg{ 5820253Sjoerg int i = 0; 5920253Sjoerg pid_t pid; 6044229Sdavidn char *args[10]; 6120253Sjoerg 6220253Sjoerg args[i++] = _PATH_PWD_MKDB; 63285092Sbapt args[i++] = "-C"; 64285092Sbapt 65285092Sbapt if (strcmp(conf.etcpath, _PATH_PWD) != 0) { 6644229Sdavidn args[i++] = "-d"; 67285092Sbapt args[i++] = conf.etcpath; 6844229Sdavidn } 6944229Sdavidn args[i++] = getpwpath(_MASTERPASSWD); 7020253Sjoerg args[i] = NULL; 7120253Sjoerg 7220253Sjoerg if ((pid = fork()) == -1) /* Error (errno set) */ 7352502Sdavidn i = errno; 7420253Sjoerg else if (pid == 0) { /* Child */ 7520253Sjoerg execv(args[0], args); 7620253Sjoerg _exit(1); 7720253Sjoerg } else { /* Parent */ 7820253Sjoerg waitpid(pid, &i, 0); 7952502Sdavidn if (WEXITSTATUS(i)) 8052502Sdavidn i = EIO; 8120253Sjoerg } 82285092Sbapt 83285092Sbapt return (i); 8420253Sjoerg} 8520253Sjoerg 8620253Sjoergstatic int 87242349Sbaptpw_update(struct passwd * pwd, char const * user) 8820253Sjoerg{ 89285092Sbapt struct passwd *pw = NULL; 90285092Sbapt struct passwd *old_pw = NULL; 91285092Sbapt int rc, pfd, tfd; 9220253Sjoerg 93285092Sbapt if ((rc = pwdb_check()) != 0) 94285092Sbapt return (rc); 9520253Sjoerg 96285092Sbapt if (pwd != NULL) 97285092Sbapt pw = pw_dup(pwd); 9820253Sjoerg 99285092Sbapt if (user != NULL) 100285092Sbapt old_pw = GETPWNAM(user); 10152502Sdavidn 102285092Sbapt if (pw_init(conf.etcpath, NULL)) 103285092Sbapt err(1, "pw_init()"); 104285092Sbapt if ((pfd = pw_lock()) == -1) { 105242349Sbapt pw_fini(); 106285092Sbapt err(1, "pw_lock()"); 10720253Sjoerg } 108285092Sbapt if ((tfd = pw_tmp(-1)) == -1) { 109285092Sbapt pw_fini(); 110285092Sbapt err(1, "pw_tmp()"); 111285092Sbapt } 112285092Sbapt if (pw_copy(pfd, tfd, pw, old_pw) == -1) { 113285092Sbapt pw_fini(); 114308814Sasomers close(tfd); 115285092Sbapt err(1, "pw_copy()"); 116285092Sbapt } 117310173Sasomers fsync(tfd); 118308814Sasomers close(tfd); 119285092Sbapt /* 120285092Sbapt * in case of deletion of a user, the whole database 121285092Sbapt * needs to be regenerated 122285092Sbapt */ 123285092Sbapt if (pw_mkdb(pw != NULL ? pw->pw_name : NULL) == -1) { 124285092Sbapt pw_fini(); 125285092Sbapt err(1, "pw_mkdb()"); 126285092Sbapt } 127285092Sbapt free(pw); 128285092Sbapt pw_fini(); 129285092Sbapt 130285092Sbapt return (0); 13120253Sjoerg} 13220253Sjoerg 13320253Sjoergint 13420253Sjoergaddpwent(struct passwd * pwd) 13520253Sjoerg{ 136285092Sbapt 137285092Sbapt return (pw_update(pwd, NULL)); 13820253Sjoerg} 13920253Sjoerg 14020253Sjoergint 14120253Sjoergchgpwent(char const * login, struct passwd * pwd) 14220253Sjoerg{ 143285092Sbapt 144285092Sbapt return (pw_update(pwd, login)); 14520253Sjoerg} 14620253Sjoerg 14720253Sjoergint 14820253Sjoergdelpwent(struct passwd * pwd) 14920253Sjoerg{ 150285092Sbapt 151285092Sbapt return (pw_update(NULL, pwd->pw_name)); 15220253Sjoerg} 153