172 lines
3.8 KiB
C
172 lines
3.8 KiB
C
/*-
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <pwd.h>
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#include <libutil.h>
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#include <errno.h>
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#include <err.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <sys/wait.h>
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#include "pwupd.h"
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static char pathpwd[] = _PATH_PWD;
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static char * pwpath = pathpwd;
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int
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setpwdir(const char * dir)
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{
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if (dir == NULL)
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return -1;
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else
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pwpath = strdup(dir);
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if (pwpath == NULL)
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return -1;
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return 0;
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}
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char *
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getpwpath(char const * file)
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{
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static char pathbuf[MAXPATHLEN];
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snprintf(pathbuf, sizeof pathbuf, "%s/%s", pwpath, file);
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return pathbuf;
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}
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static int
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pwdb(char *arg,...)
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{
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int i = 0;
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pid_t pid;
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va_list ap;
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char *args[10];
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args[i++] = _PATH_PWD_MKDB;
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va_start(ap, arg);
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while (i < 6 && arg != NULL) {
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args[i++] = arg;
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arg = va_arg(ap, char *);
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}
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if (pwpath != pathpwd) {
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args[i++] = "-d";
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args[i++] = pwpath;
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}
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args[i++] = getpwpath(_MASTERPASSWD);
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args[i] = NULL;
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if ((pid = fork()) == -1) /* Error (errno set) */
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i = errno;
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else if (pid == 0) { /* Child */
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execv(args[0], args);
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_exit(1);
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} else { /* Parent */
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waitpid(pid, &i, 0);
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if (WEXITSTATUS(i))
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i = EIO;
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}
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va_end(ap);
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return i;
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}
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static int
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pw_update(struct passwd * pwd, char const * user)
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{
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int rc = 0;
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rc = pwdb("-C", (char *)NULL); /* Check only */
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if (rc == 0) {
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int pfd, tfd;
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struct passwd *pw = NULL;
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struct passwd *old_pw = NULL;
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if (pwd != NULL)
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pw = pw_dup(pwd);
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if (user != NULL)
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old_pw = GETPWNAM(user);
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if (pw_init(pwpath, NULL))
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err(1, "pw_init()");
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if ((pfd = pw_lock()) == -1) {
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pw_fini();
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err(1, "pw_lock()");
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}
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if ((tfd = pw_tmp(-1)) == -1) {
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pw_fini();
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err(1, "pw_tmp()");
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}
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if (pw_copy(pfd, tfd, pw, old_pw) == -1) {
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pw_fini();
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err(1, "pw_copy()");
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}
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/*
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* in case of deletion of a user, the whole database
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* needs to be regenerated
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*/
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if (pw_mkdb(pw != NULL ? pw->pw_name : NULL) == -1) {
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pw_fini();
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err(1, "pw_mkdb()");
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}
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free(pw);
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pw_fini();
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}
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return 0;
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}
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int
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addpwent(struct passwd * pwd)
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{
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return pw_update(pwd, NULL);
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}
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int
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chgpwent(char const * login, struct passwd * pwd)
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{
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return pw_update(pwd, login);
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}
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int
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delpwent(struct passwd * pwd)
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{
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char login[MAXLOGNAME];
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strlcpy(login, pwd->pw_name, MAXLOGNAME);
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return pw_update(NULL, login);
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}
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