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 } 43