freebsd-dev/usr.sbin/pw/pw.c
1997-07-17 08:37:47 +00:00

370 lines
11 KiB
C

/*-
* 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: pw.c,v 1.5 1997/02/22 16:12:25 peter Exp $
*/
#include "pw.h"
#include <paths.h>
#include <sys/wait.h>
static char *progname = "pw";
const char *Modes[] = {"add", "del", "mod", "show", "next", NULL};
const char *Which[] = {"user", "group", NULL};
static const char *Combo1[] = {
"useradd", "userdel", "usermod", "usershow", "usernext",
"groupadd", "groupdel", "groupmod", "groupshow", "groupnext",
NULL};
static const char *Combo2[] = {
"adduser", "deluser", "moduser", "showuser", "nextuser",
"addgroup", "delgroup", "modgroup", "showgroup", "nextgroup",
NULL};
static struct cargs arglist;
static int getindex(const char *words[], const char *word);
static void cmdhelp(int mode, int which);
int
main(int argc, char *argv[])
{
int ch;
int mode = -1;
int which = -1;
struct userconf *cnf;
static const char *opts[W_NUM][M_NUM] =
{
{ /* user */
"C:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db:NPy:Y",
"C:qn:u:rY",
"C:qn:u:c:d:e:p:g:G:ml:k:s:w:L:h:FNPY",
"C:qn:u:FPa",
"C:q"
},
{ /* grp */
"C:qn:g:h:M:pNPY",
"C:qn:g:Y",
"C:qn:g:l:h:FM:m:NPY",
"C:qn:g:FPa",
"C:q"
}
};
static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) =
{ /* Request handlers */
pw_user,
pw_group
};
umask(0); /* We wish to handle this manually */
progname = strrchr(argv[0], '/');
if (progname != NULL)
++progname;
else
progname = argv[0];
LIST_INIT(&arglist);
/*
* Break off the first couple of words to determine what exactly
* we're being asked to do
*/
while (argc > 1 && *argv[1] != '-') {
int tmp;
if ((tmp = getindex(Modes, argv[1])) != -1)
mode = tmp;
else if ((tmp = getindex(Which, argv[1])) != -1)
which = tmp;
else if ((tmp = getindex(Combo1, argv[1])) != -1 || (tmp = getindex(Combo2, argv[1])) != -1) {
which = tmp / M_NUM;
mode = tmp % M_NUM;
} else if (strcmp(argv[1], "help") == 0)
cmdhelp(mode, which);
else if (which != -1 && mode != -1 && arglist.lh_first == NULL)
addarg(&arglist, 'n', argv[1]);
else
cmderr(EX_USAGE, "Unknown keyword `%s'\n", argv[1]);
++argv;
--argc;
}
/*
* Bail out unless the user is specific!
*/
if (mode == -1 || which == -1)
cmdhelp(mode, which);
/*
* We know which mode we're in and what we're about to do, so now
* let's dispatch the remaining command line args in a genric way.
*/
argv[0] = progname; /* Preserve this */
optarg = NULL;
while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
if (ch == '?')
cmderr(EX_USAGE, NULL);
else
addarg(&arglist, ch, optarg);
optarg = NULL;
}
/*
* Must be root to attempt an update
*/
if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL)
cmderr(EX_NOPERM, "you must be root to run this program\n");
/*
* We should immediately look for the -q 'quiet' switch so that we
* don't bother with extraneous errors
*/
if (getarg(&arglist, 'q') != NULL)
freopen("/dev/null", "w", stderr);
/*
* Now, let's do the common initialisation
*/
cnf = read_userconfig(getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL);
ch = funcs[which] (cnf, mode, &arglist);
/*
* If everything went ok, and we've been asked to update
* the NIS maps, then do it now
*/
if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) {
pid_t pid;
fflush(NULL);
if (chdir(_PATH_YP) == -1)
perror("chdir(" _PATH_YP ")");
else if ((pid = fork()) == -1)
perror("fork()");
else if (pid == 0) {
/* Is make anywhere else? */
execlp("/usr/bin/make", "make", NULL);
_exit(1);
} else {
int i;
waitpid(pid, &i, 0);
if ((i = WEXITSTATUS(i)) != 0)
cmderr(ch, "warning: make exited with status %d\n", i);
else
pw_log(cnf, mode, which, "NIS maps updated");
}
}
return ch;
}
static int
getindex(const char *words[], const char *word)
{
int i = 0;
while (words[i]) {
if (strcmp(words[i], word) == 0)
return i;
i++;
}
return -1;
}
/*
* This is probably an overkill for a cmdline help system, but it reflects
* the complexity of the command line.
*/
static void
banner(void)
{
fprintf(stderr, "%s: ", progname);
}
void
cmderr(int ec, char const * fmt,...)
{
if (fmt != NULL) {
va_list argp;
banner();
va_start(argp, fmt);
vfprintf(stderr, fmt, argp);
va_end(argp);
}
exit(ec);
}
static void
cmdhelp(int mode, int which)
{
banner();
if (which == -1)
fprintf(stderr, "usage: %s [user|group] [add|del|mod|show|next] [ help | switches/values ]\n", progname);
else if (mode == -1)
fprintf(stderr, "usage: %s %s [add|del|mod|show|next] [ help | switches/values ]\n", progname, Which[which]);
else {
/*
* We need to give mode specific help
*/
static const char *help[W_NUM][M_NUM] =
{
{
"usage: %s useradd [name] [switches]\n"
"\t-C config configuration file\n"
"\t-q quiet operation\n"
" Adding users:\n"
"\t-n name login name\n"
"\t-u uid user id\n"
"\t-c comment user name/comment\n"
"\t-d directory home directory\n"
"\t-e date account expiry date\n"
"\t-p date password expiry date\n"
"\t-g grp initial group\n"
"\t-G grp1,grp2 additional groups\n"
"\t-m [ -k dir ] create and set up home\n"
"\t-s shell name of login shell\n"
"\t-o duplicate uid ok\n"
"\t-L class user class\n"
"\t-h fd read password on fd\n"
"\t-Y update NIS maps\n"
"\t-N no update\n"
" Setting defaults:\n"
"\t-D set user defaults\n"
"\t-b dir default home root dir\n"
"\t-e period default expiry period\n"
"\t-p period default password change period\n"
"\t-g group default group\n"
"\t-G grp1,grp2 additional groups\n"
"\t-L class default user class\n"
"\t-k dir default home skeleton\n"
"\t-u min,max set min,max uids\n"
"\t-i min,max set min,max gids\n"
"\t-w method set default password method\n"
"\t-s shell default shell\n"
"\t-y path set NIS passwd file path\n",
"usage: %s userdel [uid|name] [switches]\n"
"\t-n name login name\n"
"\t-u uid user id\n"
"\t-Y update NIS maps\n"
"\t-r remove home & contents\n",
"usage: %s usermod [uid|name] [switches]\n"
"\t-C config configuration file\n"
"\t-q quiet operation\n"
"\t-F force add if no user\n"
"\t-n name login name\n"
"\t-u uid user id\n"
"\t-c comment user name/comment\n"
"\t-d directory home directory\n"
"\t-e date account expiry date\n"
"\t-p date password expiry date\n"
"\t-g grp initial group\n"
"\t-G grp1,grp2 additional groups\n"
"\t-l name new login name\n"
"\t-L class user class\n"
"\t-m [ -k dir ] create and set up home\n"
"\t-s shell name of login shell\n"
"\t-w method set new password using method\n"
"\t-h fd read password on fd\n"
"\t-Y update NIS maps\n"
"\t-N no update\n",
"usage: %s usershow [uid|name] [switches]\n"
"\t-n name login name\n"
"\t-u uid user id\n"
"\t-F force print\n"
"\t-P prettier format\n"
"\t-a print all users\n",
"usage: %s usernext [switches]\n"
"\t-C config configuration file\n"
},
{
"usage: %s groupadd [group|gid] [switches]\n"
"\t-C config configuration file\n"
"\t-q quiet operation\n"
"\t-n group group name\n"
"\t-g gid group id\n"
"\t-M usr1,usr2 add users as group members\n"
"\t-o duplicate gid ok\n"
"\t-Y update NIS maps\n"
"\t-N no update\n",
"usage: %s groupdel [group|gid] [switches]\n"
"\t-n name group name\n"
"\t-g gid group id\n"
"\t-Y update NIS maps\n",
"usage: %s groupmod [group|gid] [switches]\n"
"\t-C config configuration file\n"
"\t-q quiet operation\n"
"\t-F force add if not exists\n"
"\t-n name group name\n"
"\t-g gid group id\n"
"\t-M usr1,usr2 replaces users as group members\n"
"\t-m usr1,usr2 add users as group members\n"
"\t-l name new group name\n"
"\t-Y update NIS maps\n"
"\t-N no update\n",
"usage: %s groupshow [group|gid] [switches]\n"
"\t-n name group name\n"
"\t-g gid group id\n"
"\t-F force print\n"
"\t-P prettier format\n"
"\t-a print all accounting groups\n",
"usage: %s groupnext [switches]\n"
"\t-C config configuration file\n"
}
};
fprintf(stderr, help[which][mode], progname);
}
exit(EXIT_FAILURE);
}
struct carg *
getarg(struct cargs * _args, int ch)
{
struct carg *c = _args->lh_first;
while (c != NULL && c->ch != ch)
c = c->list.le_next;
return c;
}
struct carg *
addarg(struct cargs * _args, int ch, char *argstr)
{
struct carg *ca = malloc(sizeof(struct carg));
if (ca == NULL)
cmderr(EX_OSERR, "Abort - out of memory\n");
ca->ch = ch;
ca->val = argstr;
LIST_INSERT_HEAD(_args, ca, list);
return ca;
}