optarg_t * parse_options (int argc, const char * argv[])
{
optarg_t *poptarg = (optarg_t *) malloc(sizeof(optarg_t));
if (!poptarg) {
fprintf(stderr, "ERROR: could not allocate memory for option parser!\n");
exit(EXIT_FAILURE);
}
// set defaults
poptarg->promiscuous = 1;
poptarg->to_ms = 100;
poptarg->snaplen = 100;
poptarg->t_long = 10 * 60;
poptarg->t_short = 10;
poptarg->t_age = 30;
// check arguments
int c;
while ((c = getopt(argc, (char**)argv, "s:r:o:w:m:i:A:S:L:p?h")) != -1) {
switch (c) {
case 's':
poptarg->snaplen = atoi(optarg);
break;
case 'r':
poptarg->infile = optarg;
break;
case 'o':
poptarg->outfile = optarg;
break;
case 'w':
poptarg->dumpfile = optarg;
break;
case 'm':
poptarg->to_ms = atoi(optarg);
break;
case 'p':
poptarg->promiscuous = 0;
break;
case 'i':
poptarg->dev = optarg;
break;
case 'S':
poptarg->t_short = atoi(optarg);
break;
case 'L':
poptarg->t_long = atoi(optarg);
break;
case 'A':
poptarg->t_age = atoi(optarg);
break;
case '?':
usage();
break;
case 'h':
usage();
break;
default:
usage();
break;
}
}
// set the remaining as filter string
poptarg->filter = concat_argv((char**)&argv[optind]);
return(poptarg);
}
bool
argv_to_string(const char *argv[SIZEOF_ARG], char *buf, size_t buflen, const char *sep)
{
return concat_argv(argv, buf, buflen, sep, FALSE);
}
bool
argv_to_string_quoted(const char *argv[SIZEOF_ARG], char *buf, size_t buflen, const char *sep)
{
return concat_argv(argv, buf, buflen, sep, true);
}
