usr/src/cmd/ipf/lib/common/buildopts.c

   1 /*
   2  * Copyright (C) 1993-2001 by Darren Reed.
   3  *
   4  * See the IPFILTER.LICENCE file for details on licencing.
   5  *
   6  * $Id: buildopts.c,v 1.6 2002/01/28 06:50:45 darrenr Exp $
   7  */
   8
   9 #include "ipf.h"
  10
  11
  12 u_32_t buildopts(cp, op, len)
  13 char *cp, *op;
  14 int len;
  15 {
  16         struct ipopt_names *io;
  17         u_32_t msk = 0;
  18         char *s, *t;
  19         int inc;
  20
  21         for (s = strtok(cp, ","); s; s = strtok(NULL, ",")) {
  22                 if ((t = strchr(s, '=')))
  23                         *t++ = '\0';
  24                 for (io = ionames; io->on_name; io++) {
  25                         if (strcasecmp(s, io->on_name) || (msk & io->on_bit))
  26                                 continue;
  27                         if ((inc = addipopt(op, io, len, t))) {
  28                                 op += inc;
  29                                 len += inc;
  30                         }
  31                         msk |= io->on_bit;
  32                         break;
  33                 }
  34                 if (!io->on_name) {
  35                         fprintf(stderr, "unknown IP option name %s\n", s);
  36                         return 0;
  37                 }
  38         }
  39         *op++ = IPOPT_EOL;
  40         len++;
  41         return len;
  42 }