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Get hostnames with reverse DNS

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This commit is contained in:
Lorenz Stechauner
2020-12-28 23:32:37 +01:00
parent cf8862100a
commit ee7d1e086b
4 changed files with 55 additions and 27 deletions
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9
src/necronda-server.c
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@ -189,10 +189,11 @@ int main(int argc, const char *argv[]) {
const char *arg = argv[i];
unsigned long len = strlen(arg);
if ((len == 2 && strncmp(arg, "-h", 2) == 0) || (len == 6 && strncmp(arg, "--help", 6) == 0)) {
printf("Usage: necronda-server [-h] -w <PATH> -c <CERT-FILE> -p <KEY-FILE> [-g <DB-FILE>]\n"
printf("Usage: necronda-server [-h] -w <PATH> -c <CERT-FILE> -p <KEY-FILE> [-g <DB-FILE>] [-d <DNS-SERVER>]\n"
"\n"
"Options:\n"
" -c, --cert <CERT-FILE> path to the full chain certificate file\n"
" -d, --dns <DNS-SERVER> ip address or hostname of a DNS server for dig\n"
" -g, --geoip <DB-FILE> path to a Maxmind GeoIP Database file\n"
" -h, --help print this dialogue\n"
" -p, --privkey <KEY-FILE> path to the private key file\n"
@ -222,6 +223,12 @@ int main(int argc, const char *argv[]) {
return 1;
}
geoip_file = argv[++i];
} else if ((len == 2 && strncmp(arg, "-d", 2) == 0) || (len == 5 && strncmp(arg, "--dns", 5) == 0)) {
if (i == argc - 1) {
fprintf(stderr, ERR_STR "Unable to parse argument %s, usage: --dns <DNS-SERVER>" CLR_STR "\n", arg);
return 1;
}
dns_server = argv[++i];
} else {
fprintf(stderr, ERR_STR "Unable to parse argument '%s'" CLR_STR "\n", arg);
return 1;