src/_copyright/_copyright.c

   1 /*
   2  * copyright reporter
   3  * (just avoids having the info in more than one place in the source)
   4  * Copyright (C) 2001  Henry Spencer.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * for more details.
  15  *
  16  * RCSID $Id$
  17  */
  18
  19 #include <sys/types.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #include <getopt.h>
  25 #include <freeswan.h>
  26
  27 char usage[] = "Usage: ipsec _copyright";
  28 struct option opts[] = {
  29   {"help",      0,      NULL,   'h',},
  30   {"version",   0,      NULL,   'v',},
  31   {0,           0,      NULL,   0, },
  32 };
  33
  34 char me[] = "ipsec _copyright"; /* for messages */
  35
  36 int
  37 main(int argc, char *argv[])
  38 {
  39         int opt;
  40         extern int optind;
  41         int errflg = 0;
  42         const char *version = ipsec_version_code();
  43         const char **notice = ipsec_copyright_notice();
  44         const char **co;
  45
  46         while ((opt = getopt_long(argc, argv, "", opts, NULL)) != EOF)
  47                 switch (opt) {
  48                 case 'h':       /* help */
  49                         printf("%s\n", usage);
  50                         exit(0);
  51                         break;
  52                 case 'v':       /* version */
  53                         printf("%s %s\n", me, version);
  54                         exit(0);
  55                         break;
  56                 case '?':
  57                 default:
  58                         errflg = 1;
  59                         break;
  60                 }
  61         if (errflg || optind != argc) {
  62                 fprintf(stderr, "%s\n", usage);
  63                 exit(2);
  64         }
  65
  66         for (co = notice; *co != NULL; co++)
  67                 printf("%s\n", *co);
  68         exit(0);
  69 }