usr.sbin/user/main.c

   1 /* $NetBSD: main.c,v 1.5 2006/10/22 21:16:58 christos 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. The name of the author may not be used to endorse or promote
  15  *    products derived from this software without specific prior written
  16  *    permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  24  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30 #include <err.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <unistd.h>
  35
  36 #include "usermgmt.h"
  37
  38 enum {
  39         MaxCmdWords = 2
  40 };
  41
  42 /* this struct describes a command */
  43 typedef struct cmd_t {
  44         int             c_wc;                           /* word count */
  45         const char      *c_word[MaxCmdWords];           /* command words */
  46         int             (*c_func)(int, char **);        /* called function */
  47 } cmd_t;
  48
  49 /* despatch table for commands */
  50 static cmd_t    cmds[] = {
  51         {       1,      { "useradd",    NULL },         useradd         },
  52         {       2,      { "user",       "add" },        useradd         },
  53         {       1,      { "usermod",    NULL },         usermod         },
  54         {       2,      { "user",       "mod" },        usermod         },
  55         {       1,      { "userdel",    NULL },         userdel         },
  56         {       2,      { "user",       "del" },        userdel         },
  57 #ifdef EXTENSIONS
  58         {       1,      { "userinfo",   NULL },         userinfo        },
  59         {       2,      { "user",       "info" },       userinfo        },
  60 #endif
  61         {       1,      { "groupadd",   NULL },         groupadd        },
  62         {       2,      { "group",      "add" },        groupadd        },
  63         {       1,      { "groupmod",   NULL },         groupmod        },
  64         {       2,      { "group",      "mod" },        groupmod        },
  65         {       1,      { "groupdel",   NULL },         groupdel        },
  66         {       2,      { "group",      "del" },        groupdel        },
  67 #ifdef EXTENSIONS
  68         {       1,      { "groupinfo",  NULL },         groupinfo       },
  69         {       2,      { "group",      "info" },       groupinfo       },
  70 #endif
  71         {       .c_wc = 0       }
  72 };
  73
  74 int
  75 main(int argc, char **argv)
  76 {
  77         cmd_t   *cmdp;
  78         int     matched;
  79         int     i;
  80
  81         for (cmdp = cmds ; cmdp->c_wc > 0 ; cmdp++) {
  82                 for (matched = i = 0 ; i < cmdp->c_wc && i < MaxCmdWords ; i++) {
  83                         if (argc > i) {
  84                                 if (strcmp((i == 0) ? getprogname() : argv[i],
  85                                                 cmdp->c_word[i]) == 0) {
  86                                         matched += 1;
  87                                 } else {
  88                                         break;
  89                                 }
  90                         }
  91                 }
  92                 if (matched == cmdp->c_wc) {
  93                         return (*cmdp->c_func)(argc - (matched - 1), argv + (matched - 1));
  94                 }
  95         }
  96         usermgmt_usage(getprogname());
  97         errx(EXIT_FAILURE, "Program `%s' not recognised", getprogname());
  98         /* NOTREACHED */
  99 }