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main.c revision 1.3 
      1 /* $NetBSD: main.c,v 1.3 2002/07/09 10:34:16 tron Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999 Alistair G. Crooks.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Alistair G. Crooks.
     17  * 4. The name of the author may not be used to endorse or promote
     18  *    products derived from this software without specific prior written
     19  *    permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #include <err.h>
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 #include <unistd.h>
     38 
     39 #include "usermgmt.h"
     40 
     41 enum {
     42 	MaxCmdWords = 2
     43 };
     44 
     45 /* this struct describes a command */
     46 typedef struct cmd_t {
     47 	int		c_wc;				/* word count */
     48 	const char	*c_word[MaxCmdWords];		/* command words */
     49 	int		(*c_func)(int, char **);	/* called function */
     50 } cmd_t;
     51 
     52 /* despatch table for commands */
     53 static cmd_t	cmds[] = {
     54 	{	1,	{ "useradd",	NULL },		useradd		},
     55 	{	2,	{ "user",	"add" },	useradd		},
     56 	{	1,	{ "usermod",	NULL },		usermod		},
     57 	{	2,	{ "user",	"mod" },	usermod		},
     58 	{	1,	{ "userdel",	NULL },		userdel		},
     59 	{	2,	{ "user",	"del" },	userdel		},
     60 #ifdef EXTENSIONS
     61 	{	1,	{ "userinfo",	NULL },		userinfo	},
     62 	{	2,	{ "user",	"info" },	userinfo	},
     63 #endif
     64 	{	1,	{ "groupadd",	NULL },		groupadd	},
     65 	{	2,	{ "group",	"add" },	groupadd	},
     66 	{	1,	{ "groupmod",	NULL },		groupmod	},
     67 	{	2,	{ "group",	"mod" },	groupmod	},
     68 	{	1,	{ "groupdel",	NULL },		groupdel	},
     69 	{	2,	{ "group",	"del" },	groupdel	},
     70 #ifdef EXTENSIONS
     71 	{	1,	{ "groupinfo",	NULL },		groupinfo	},
     72 	{	2,	{ "group",	"info" },	groupinfo	},
     73 #endif
     74 	{	0	}
     75 };
     76 
     77 int
     78 main(int argc, char **argv)
     79 {
     80 	cmd_t	*cmdp;
     81 	int	matched;
     82 	int	i;
     83 
     84 	for (cmdp = cmds ; cmdp->c_wc > 0 ; cmdp++) {
     85 		for (matched = i = 0 ; i < cmdp->c_wc && i < MaxCmdWords ; i++) {
     86 			if (argc > i) {
     87 				if (strcmp((i == 0) ? getprogname() : argv[i],
     88 						cmdp->c_word[i]) == 0) {
     89 					matched += 1;
     90 				} else {
     91 					break;
     92 				}
     93 			}
     94 		}
     95 		if (matched == cmdp->c_wc) {
     96 			return (*cmdp->c_func)(argc - (matched - 1), argv + (matched - 1));
     97 		}
     98 	}
     99 	usermgmt_usage(getprogname());
    100 	errx(EXIT_FAILURE, "Program `%s' not recognised", getprogname());
    101 	/* NOTREACHED */
    102 }
    103