pwupd.c revision 20302
1200581Srdivacky/*- 2200581Srdivacky * Copyright (C) 1996 3200581Srdivacky * David L. Nugent. All rights reserved. 4200581Srdivacky * 5200581Srdivacky * Redistribution and use in source and binary forms, with or without 6200581Srdivacky * modification, are permitted provided that the following conditions 7200581Srdivacky * are met: 8200581Srdivacky * 1. Redistributions of source code must retain the above copyright 9200581Srdivacky * notice, this list of conditions and the following disclaimer. 10200581Srdivacky * 2. Redistributions in binary form must reproduce the above copyright 11200581Srdivacky * notice, this list of conditions and the following disclaimer in the 12200581Srdivacky * documentation and/or other materials provided with the distribution. 13200581Srdivacky * 14200581Srdivacky * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15200581Srdivacky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16200581Srdivacky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17243830Sdim * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18243830Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19200581Srdivacky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20200581Srdivacky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21200581Srdivacky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22200581Srdivacky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23200581Srdivacky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24200581Srdivacky * SUCH DAMAGE. 25200581Srdivacky * 26200581Srdivacky * $Id: pwupd.c,v 1.1.1.2 1996/12/09 23:55:27 joerg Exp $ 27200581Srdivacky */ 28208599Srdivacky 29207618Srdivacky#include <stdio.h> 30200581Srdivacky#include <stdlib.h> 31200581Srdivacky#include <string.h> 32200581Srdivacky#include <unistd.h> 33200581Srdivacky#include <stdarg.h> 34200581Srdivacky#include <errno.h> 35200581Srdivacky#include <sys/types.h> 36208599Srdivacky#include <sys/stat.h> 37207618Srdivacky#include <sys/wait.h> 38207618Srdivacky#include <stdarg.h> 39200581Srdivacky 40200581Srdivacky#include "pwupd.h" 41200581Srdivacky 42200581Srdivacky#define HAVE_PWDB_C 1 43200581Srdivacky 44200581Srdivackystatic int 45200581Srdivackypwdb(char *arg,...) 46200581Srdivacky{ 47200581Srdivacky int i = 0; 48200581Srdivacky pid_t pid; 49200581Srdivacky va_list ap; 50200581Srdivacky char *args[8]; 51200581Srdivacky 52200581Srdivacky args[i++] = _PATH_PWD_MKDB; 53200581Srdivacky va_start(ap, arg); 54200581Srdivacky while (i < 6 && arg != NULL) { 55200581Srdivacky args[i++] = arg; 56200581Srdivacky arg = va_arg(ap, char *); 57200581Srdivacky } 58200581Srdivacky args[i++] = _PATH_MASTERPASSWD; 59200581Srdivacky args[i] = NULL; 60200581Srdivacky 61200581Srdivacky if ((pid = fork()) == -1) /* Error (errno set) */ 62200581Srdivacky i = -1; 63200581Srdivacky else if (pid == 0) { /* Child */ 64200581Srdivacky execv(args[0], args); 65200581Srdivacky _exit(1); 66200581Srdivacky } else { /* Parent */ 67200581Srdivacky waitpid(pid, &i, 0); 68200581Srdivacky if ((i = WEXITSTATUS(i)) != 0) 69200581Srdivacky errno = EIO; /* set SOMETHING */ 70200581Srdivacky } 71200581Srdivacky return i; 72200581Srdivacky} 73200581Srdivacky 74200581Srdivackyint 75200581Srdivackyfmtpwentry(char *buf, struct passwd * pwd, int type) 76200581Srdivacky{ 77200581Srdivacky int l; 78200581Srdivacky char *pw; 79200581Srdivacky 80200581Srdivacky pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*"; 81200581Srdivacky 82200581Srdivacky if (type == PWF_PASSWD) 83200581Srdivacky l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n", 84200581Srdivacky pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid, 85200581Srdivacky pwd->pw_gecos ? pwd->pw_gecos : "User &", 86200581Srdivacky pwd->pw_dir, pwd->pw_shell); 87200581Srdivacky else 88200581Srdivacky l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n", 89200581Srdivacky pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid, 90200581Srdivacky pwd->pw_class ? pwd->pw_class : "", 91200581Srdivacky (unsigned long) pwd->pw_change, 92200581Srdivacky (unsigned long) pwd->pw_expire, 93200581Srdivacky pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 94200581Srdivacky return l; 95200581Srdivacky} 96200581Srdivacky 97200581Srdivacky 98200581Srdivackyint 99200581Srdivackyfmtpwent(char *buf, struct passwd * pwd) 100200581Srdivacky{ 101200581Srdivacky return fmtpwentry(buf, pwd, PWF_STANDARD); 102200581Srdivacky} 103200581Srdivacky 104200581Srdivackystatic int 105200581Srdivackypw_update(struct passwd * pwd, char const * user, int mode) 106200581Srdivacky{ 107200581Srdivacky int rc = 0; 108200581Srdivacky 109200581Srdivacky endpwent(); 110207618Srdivacky 111243830Sdim /* 112243830Sdim * First, let's check the see if the database is alright 113200581Srdivacky * Note: -c is only available in FreeBSD 2.2 and above 114200581Srdivacky */ 115200581Srdivacky#ifdef HAVE_PWDB_C 116200581Srdivacky if (pwdb("-c", NULL) == 0) { /* Check only */ 117200581Srdivacky#else 118 { /* No -c */ 119#endif 120 char pfx[32]; 121 char pwbuf[MAXPWLINE]; 122 int l = sprintf(pfx, "%s:", user); 123 124 /* 125 * Update the passwd file first 126 */ 127 if (pwd == NULL) 128 *pwbuf = '\0'; 129 else 130 fmtpwentry(pwbuf, pwd, PWF_PASSWD); 131 if ((rc = fileupdate(_PATH_PASSWD, 0644, pwbuf, pfx, l, mode)) != 0) { 132 133 /* 134 * Then the master.passwd file 135 */ 136 if (pwd != NULL) 137 fmtpwentry(pwbuf, pwd, PWF_MASTER); 138 if ((rc = fileupdate(_PATH_MASTERPASSWD, 0644, pwbuf, pfx, l, mode)) != 0) 139 rc = pwdb(NULL) == 0; 140 } 141 } 142 return rc; 143} 144 145int 146addpwent(struct passwd * pwd) 147{ 148 return pw_update(pwd, pwd->pw_name, UPD_CREATE); 149} 150 151int 152chgpwent(char const * login, struct passwd * pwd) 153{ 154 return pw_update(pwd, login, UPD_REPLACE); 155} 156 157int 158delpwent(struct passwd * pwd) 159{ 160 return pw_update(NULL, pwd->pw_name, UPD_DELETE); 161} 162