diff options
Diffstat (limited to 'usr.sbin/pw/pwupd.c')
| -rw-r--r-- | usr.sbin/pw/pwupd.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/usr.sbin/pw/pwupd.c b/usr.sbin/pw/pwupd.c new file mode 100644 index 0000000..e13ce5f --- /dev/null +++ b/usr.sbin/pw/pwupd.c @@ -0,0 +1,160 @@ +/*- + * Copyright (c) 1996 by David L. Nugent <davidn@blaze.net.au>. + * 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 as + * the first lines of this file unmodified. + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by David L. Nugent. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DAVID L. NUGENT ``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 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. + * + * $Id$ + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <stdarg.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/wait.h> +#include <stdarg.h> + +#include "pwupd.h" + +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 + */ + if (pwdb("-c", NULL) == 0) { /* Check only */ + char pfx[32]; + char pwbuf[MAXPWLINE]; + 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); +} |
