static void config_parse_label(u8* val) {
u8* nxt;
u32 i;
/* Simplified handling for [mtu] signatures. */
if (mod_type == CF_MOD_MTU) {
if (!*val) FATAL("Empty MTU label in line %u.\n", line_no);
sig_flavor = DFL_ck_strdup(val);
return;
}
if (*val == 'g') generic = 1;
else if (*val == 's') generic = 0;
else FATAL("Malformed class entry in line %u.", line_no);
if (val[1] != ':') FATAL("Malformed class entry in line %u.", line_no);
val += 2;
nxt = val;
while (isalnum(*nxt) || *nxt == '!') nxt++;
if (nxt == val || *nxt != ':') FATAL("Malformed class entry in line %u.", line_no);
if (*val == '!' && val[1] == ':') {
sig_class = -1;
} else {
*nxt = 0;
for (i = 0; i < class_cnt; i++)
if (!strcasecmp((char*)val, (char*)fp_os_classes[i])) break;
if (i == class_cnt) FATAL("Unknown class '%s' in line %u.", val, line_no);
sig_class = i;
}
nxt++;
val = nxt;
while (isalnum(*nxt) || (*nxt && strchr(NAME_CHARS, *nxt))) nxt++;
if (nxt == val || *nxt != ':') FATAL("Malformed name in line %u.", line_no);
sig_name = lookup_name_id(val, nxt - val);
if (nxt[1]) sig_flavor = DFL_ck_strdup(nxt + 1);
else sig_flavor = NULL;
label_id++;
}
static u8* find_interface(int num) {
char pcap_err[PCAP_ERRBUF_SIZE];
pcap_if_t *dev;
if (pcap_findalldevs(&dev, pcap_err) == -1)
printf("\n FATAL: pcap_findalldevs: %s\n", pcap_err);
do {
if (!num--) {
u8* ret = DFL_ck_strdup((char*)dev->name);
pcap_freealldevs(dev);
return ret;
}
} while ((dev = dev->next));
printf("\n FATAL: Interface not found (use -L to list all).");
}