/*- * Copyright (C) 1996 * David L. Nugent. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: pwupd.c,v 1.1.1.3 1996/12/10 23:59:02 joerg Exp $ */ #include #include #include #include #include #include #include #include #include #include #include "pwupd.h" #define HAVE_PWDB_C 1 static int pwdb(char *arg,...) { int i = 0; pid_t pid; va_list ap; char *args[8]; args[i++] = _PATH_PWD_MKDB; va_start(ap, arg); while (i < 6 && arg != NULL) { args[i++] = arg; arg = va_arg(ap, char *); } args[i++] = _PATH_MASTERPASSWD; args[i] = NULL; if ((pid = fork()) == -1) /* Error (errno set) */ i = -1; else if (pid == 0) { /* Child */ execv(args[0], args); _exit(1); } else { /* Parent */ waitpid(pid, &i, 0); if ((i = WEXITSTATUS(i)) != 0) errno = EIO; /* set SOMETHING */ } return i; } int fmtpwentry(char *buf, struct passwd * pwd, int type) { int l; char *pw; pw = (pwd->pw_passwd == NULL || !*pwd->pw_passwd) ? "" : (type == PWF_MASTER) ? pwd->pw_passwd : "*"; if (type == PWF_PASSWD) l = sprintf(buf, "%s:*:%ld:%ld:%s:%s:%s\n", pwd->pw_name, (long) pwd->pw_uid, (long) pwd->pw_gid, pwd->pw_gecos ? pwd->pw_gecos : "User &", pwd->pw_dir, pwd->pw_shell); else l = sprintf(buf, "%s:%s:%ld:%ld:%s:%lu:%lu:%s:%s:%s\n", pwd->pw_name, pw, (long) pwd->pw_uid, (long) pwd->pw_gid, pwd->pw_class ? pwd->pw_class : "", (unsigned long) pwd->pw_change, (unsigned long) pwd->pw_expire, pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); return l; } int fmtpwent(char *buf, struct passwd * pwd) { return fmtpwentry(buf, pwd, PWF_STANDARD); } static int pw_update(struct passwd * pwd, char const * user, int mode) { int rc = 0; endpwent(); /* * First, let's check the see if the database is alright * Note: -c is only available in FreeBSD 2.2 and above */ #ifdef HAVE_PWDB_C if (pwdb("-c", NULL) == 0) { /* Check only */ #else { /* No -c */ #endif char pfx[32]; char pwbuf[PWBUFSZ]; int l = sprintf(pfx, "%s:", user); /* * Update the passwd file first */ if (pwd == NULL) *pwbuf = '\0'; else fmtpwentry(pwbuf, pwd, PWF_PASSWD); if ((rc = fileupdate(_PATH_PASSWD, 0644, pwbuf, pfx, l, mode)) != 0) { /* * Then the master.passwd file */ if (pwd != NULL) fmtpwentry(pwbuf, pwd, PWF_MASTER); if ((rc = fileupdate(_PATH_MASTERPASSWD, 0644, pwbuf, pfx, l, mode)) != 0) rc = pwdb(NULL) == 0; } } return rc; } int addpwent(struct passwd * pwd) { return pw_update(pwd, pwd->pw_name, UPD_CREATE); } int chgpwent(char const * login, struct passwd * pwd) { return pw_update(pwd, login, UPD_REPLACE); } int delpwent(struct passwd * pwd) { return pw_update(NULL, pwd->pw_name, UPD_DELETE); }