05e112065e
The server now checks the host database and responds correctly, but the client still does not know how to get that response.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
|
|
luksrku - Tool to remotely unlock LUKS disks using TLS.
|
|
Copyright (C) 2016-2019 Johannes Bauer
|
|
|
|
This file is part of luksrku.
|
|
|
|
luksrku is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; this program is ONLY licensed under
|
|
version 3 of the License, later versions are explicitly excluded.
|
|
|
|
luksrku is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with luksrku; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Johannes Bauer <JohannesBauer@gmx.de>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <sys/time.h>
|
|
#include "blacklist.h"
|
|
#include "global.h"
|
|
|
|
static struct blacklist_entry_t blacklist[BLACKLIST_ENTRY_COUNT];
|
|
|
|
static double now(void) {
|
|
struct timeval tv;
|
|
if (gettimeofday(&tv, NULL)) {
|
|
return 0;
|
|
}
|
|
return tv.tv_sec + (tv.tv_usec * 1e-6);
|
|
}
|
|
|
|
static bool blacklist_entry_expired(int index) {
|
|
return now() > blacklist[index].entered + BLACKLIST_ENTRY_TIMEOUT_SECS;
|
|
}
|
|
|
|
void blacklist_ip(uint32_t ip) {
|
|
for (int i = 0; i < BLACKLIST_ENTRY_COUNT; i++) {
|
|
if (blacklist_entry_expired(i)) {
|
|
blacklist[i].ip = ip;
|
|
blacklist[i].entered = now();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool is_ip_blacklisted(uint32_t ip) {
|
|
for (int i = 0; i < BLACKLIST_ENTRY_COUNT; i++) {
|
|
if ((ip == blacklist[i].ip) && (!blacklist_entry_expired(i))) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|