322 lines
9.4 KiB
C
322 lines
9.4 KiB
C
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/*-
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* Copyright (c) 1996 by David L. Nugent <davidn@blaze.net.au>.
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* 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 as
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* the first lines of this file unmodified.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by David L. Nugent.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DAVID L. NUGENT ``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 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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* $Id$
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*/
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#include "pw.h"
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static char *progname = "pw";
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const char *Modes[] = {"add", "del", "mod", "show", NULL};
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const char *Which[] = {"user", "group", NULL};
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static const char *Combo1[] = {"useradd", "userdel", "usermod", "usershow",
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"groupadd", "groupdel", "groupmod", "groupshow",
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NULL};
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static const char *Combo2[] = {"adduser", "deluser", "moduser", "showuser",
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"addgroup", "delgroup", "modgroup", "showgroup",
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NULL};
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static struct cargs arglist;
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static int getindex(const char *words[], const char *word);
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static void cmdhelp(int mode, int which);
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int
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main(int argc, char *argv[])
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{
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int ch;
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int mode = -1;
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int which = -1;
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struct userconf *cnf;
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static const char *opts[W_NUM][M_NUM] =
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{
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/* user */ {"C:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db", "C:qn:u:r", "C:qn:u:c:d:e:p:g:G:mk:s:L:h:F", "C:qn:u:Fpa"},
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/* grp */ {"C:qn:g:h:p", "C:qn:g:", "C:qn:g:l:h:F", "C:qn:g:Fpa"}
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};
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static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) =
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{ /* Request handlers */
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pw_user,
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pw_group
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};
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umask(0); /* We wish to handle this manually */
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progname = strrchr(argv[0], '/');
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if (progname != NULL)
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++progname;
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else
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progname = argv[0];
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LIST_INIT(&arglist);
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/*
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* Break off the first couple of words to determine what exactly
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* we're being asked to do
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*/
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while (argc > 1 && *argv[1] != '-') {
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int tmp;
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if ((tmp = getindex(Modes, argv[1])) != -1)
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mode = tmp;
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else if ((tmp = getindex(Which, argv[1])) != -1)
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which = tmp;
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else if ((tmp = getindex(Combo1, argv[1])) != -1 || (tmp = getindex(Combo2, argv[1])) != -1) {
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which = tmp / M_NUM;
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mode = tmp % M_NUM;
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} else if (strcmp(argv[1], "help") == 0)
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cmdhelp(mode, which);
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else if (which != -1 && mode != -1 && arglist.lh_first == NULL)
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addarg(&arglist, 'n', argv[1]);
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else
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cmderr(X_CMDERR, "Unknown keyword `%s'\n", argv[1]);
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++argv;
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--argc;
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}
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/*
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* Bail out unless the user is specific!
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*/
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if (mode == -1 || which == -1)
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cmdhelp(mode, which);
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/*
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* Must be root to attempt an update
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*/
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if (getuid() != 0 && mode != M_PRINT)
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cmderr(X_PERMERR, "you must be root to run this program\n");
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/*
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* We know which mode we're in and what we're about to do, so now
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* let's dispatch the remaining command line args in a genric way.
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*/
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argv[0] = progname; /* Preserve this */
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optarg = NULL;
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while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
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if (ch == '?')
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cmderr(X_CMDERR, NULL);
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else
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addarg(&arglist, ch, optarg);
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optarg = NULL;
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}
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/*
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* We should immediately look for the -q 'quiet' switch so that we
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* don't bother with extraneous errors
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*/
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if (getarg(&arglist, 'q') != NULL)
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freopen("/dev/null", "w", stderr);
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ch = X_CMDERR;
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/*
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* Now, let's do the common initialisation
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*/
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cnf = read_userconfig(getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL);
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if (funcs[which])
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ch = funcs[which] (cnf, mode, &arglist);
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else
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fprintf(stderr, "%s: %s[%s] not yet implemented.\n", progname, Which[which], Modes[mode]);
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return ch;
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}
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static int
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getindex(const char *words[], const char *word)
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{
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int i = 0;
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while (words[i]) {
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if (strcmp(words[i], word) == 0)
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return i;
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i++;
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}
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return -1;
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}
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/*
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* This is probably an overkill for a cmdline help system, but it reflects
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* the complexity of the command line.
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*/
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static void
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banner(void)
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{
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fprintf(stderr, "%s: ", progname);
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}
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void
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cmderr(int ec, char const * fmt,...)
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{
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if (fmt != NULL) {
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va_list argp;
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banner();
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va_start(argp, fmt);
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vfprintf(stderr, fmt, argp);
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va_end(argp);
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}
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exit(ec);
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}
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static void
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cmdhelp(int mode, int which)
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{
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banner();
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if (which == -1)
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fprintf(stderr, "usage: %s [user|group] [add|del|mod|show] [ help | switches/values ]\n", progname);
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else if (mode == -1)
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fprintf(stderr, "usage: %s %s [add|del|mod] [ help | switches/values ]\n", progname, Which[which]);
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else {
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/*
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* We need to give mode specific help
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*/
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static const char *help[W_NUM][M_NUM] =
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{
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{
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"usage: %s useradd [name] [switches]\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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" Adding users:\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-c comment user name/comment\n"
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"\t-d directory home directory\n"
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"\t-e date account expiry date\n"
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"\t-p date password expiry date\n"
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"\t-g grp initial group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-m [ -k dir ] create and set up home\n"
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"\t-s shell name of login shell\n"
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"\t-o duplicate uid ok\n"
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"\t-L class user class\n"
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"\t-h fd read password on fd\n"
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" Setting defaults:\n"
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"\t-D set user defaults\n"
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"\t-b dir default home root dir\n"
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"\t-e period default expiry period\n"
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"\t-p period default password change period\n"
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"\t-g group default group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-L class default user class\n"
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"\t-k dir default home skeleton\n"
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"\t-u min,max set min,max uids\n"
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"\t-i min,max set min,max gids\n"
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"\t-w method set default password method\n"
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"\t-s shell default shell\n",
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"usage: %s userdel [uid|name] [switches]\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-r remove home & contents\n",
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"usage: %s usermod [uid|name] [switches]\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-F force add if no user\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-c comment user name/comment\n"
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"\t-d directory home directory\n"
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"\t-e date account expiry date\n"
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"\t-p date password expiry date\n"
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"\t-g grp initial group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-l name new login name\n"
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"\t-L class user class\n"
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"\t-m [ -k dir ] create and set up home\n"
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"\t-s shell name of login shell\n"
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"\t-h fd read password on fd\n",
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"usage: %s usershow [uid|name] [switches]\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-F force print\n"
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"\t-p prettier format\n"
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"\t-a print all users\n"
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},
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{
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"usage: %s groupadd [group|gid] [switches]\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-n group group name\n"
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"\t-g gid group id\n"
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"\t-o duplicate gid ok\n",
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"usage: %s groupdel [group|gid] [switches]\n"
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"\t-n name group name\n"
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"\t-g gid group id\n",
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"usage: %s groupmod [group|gid] [switches]\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-F force add if not exists\n"
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"\t-n name group name\n"
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"\t-g gid group id\n"
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"\t-l name new group name\n",
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"usage: %s groupshow [group|gid] [switches]\n"
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"\t-n name group name\n"
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"\t-g gid group id\n"
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"\t-F force print\n"
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"\t-p prettier format\n"
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"\t-a print all accounting groups\n"
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}
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};
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fprintf(stderr, help[which][mode], progname);
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}
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exit(X_CMDERR);
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}
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struct carg *
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getarg(struct cargs * _args, int ch)
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{
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struct carg *c = _args->lh_first;
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while (c != NULL && c->ch != ch)
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c = c->list.le_next;
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return c;
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}
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struct carg *
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addarg(struct cargs * _args, int ch, char *argstr)
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{
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struct carg *ca = malloc(sizeof(struct carg));
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if (ca == NULL)
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cmderr(X_MEMERR, "Abort - out of memory\n");
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ca->ch = ch;
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ca->val = argstr;
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LIST_INSERT_HEAD(_args, ca, list);
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return ca;
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}
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