contrib/ipfilter/lib/optname.c

   1 /*      $FreeBSD$       */
   2
   3 /*
   4  * Copyright (C) 2012 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  * $Id$
   9  */
  10
  11 #include "ipf.h"
  12
  13
  14 u_32_t optname(cp, sp, linenum)
  15         char ***cp;
  16         u_short *sp;
  17         int linenum;
  18 {
  19         struct ipopt_names *io, *so;
  20         u_long msk = 0;
  21         u_short smsk = 0;
  22         char *s;
  23         int sec = 0;
  24
  25         for (s = strtok(**cp, ","); s; s = strtok(NULL, ",")) {
  26                 for (io = ionames; io->on_name; io++)
  27                         if (!strcasecmp(s, io->on_name)) {
  28                                 msk |= io->on_bit;
  29                                 break;
  30                         }
  31                 if (!io->on_name) {
  32                         fprintf(stderr, "%d: unknown IP option name %s\n",
  33                                 linenum, s);
  34                         return 0;
  35                 }
  36                 if (!strcasecmp(s, "sec-class"))
  37                         sec = 1;
  38         }
  39
  40         if (sec && !*(*cp + 1)) {
  41                 fprintf(stderr, "%d: missing security level after sec-class\n",
  42                         linenum);
  43                 return 0;
  44         }
  45
  46         if (sec) {
  47                 (*cp)++;
  48                 for (s = strtok(**cp, ","); s; s = strtok(NULL, ",")) {
  49                         for (so = secclass; so->on_name; so++)
  50                                 if (!strcasecmp(s, so->on_name)) {
  51                                         smsk |= so->on_bit;
  52                                         break;
  53                                 }
  54                         if (!so->on_name) {
  55                                 fprintf(stderr,
  56                                         "%d: no such security level: %s\n",
  57                                         linenum, s);
  58                                 return 0;
  59                         }
  60                 }
  61                 if (smsk)
  62                         *sp = smsk;
  63         }
  64         return msk;
  65 }