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Diffstat (limited to 'openvpn/src/openvpn/otime.c')
-rw-r--r--openvpn/src/openvpn/otime.c201
1 files changed, 0 insertions, 201 deletions
diff --git a/openvpn/src/openvpn/otime.c b/openvpn/src/openvpn/otime.c
deleted file mode 100644
index 2c1e5b13..00000000
--- a/openvpn/src/openvpn/otime.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * OpenVPN -- An application to securely tunnel IP networks
- * over a single TCP/UDP port, with support for SSL/TLS-based
- * session authentication and key exchange,
- * packet encryption, packet authentication, and
- * packet compression.
- *
- * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program 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 this program (see the file COPYING included with this
- * distribution); if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#elif defined(_MSC_VER)
-#include "config-msvc.h"
-#endif
-
-#include "syshead.h"
-
-#include "otime.h"
-
-#include "memdbg.h"
-
-time_t now = 0; /* GLOBAL */
-
-#if TIME_BACKTRACK_PROTECTION
-
-static time_t now_adj = 0; /* GLOBAL */
-time_t now_usec = 0; /* GLOBAL */
-
-/*
- * Try to filter out time instability caused by the system
- * clock backtracking or jumping forward.
- */
-
-void
-update_now (const time_t system_time)
-{
- const int forward_threshold = 86400; /* threshold at which to dampen forward jumps */
- const int backward_trigger = 10; /* backward jump must be >= this many seconds before we adjust */
- time_t real_time = system_time + now_adj;
-
- if (real_time > now)
- {
- const time_t overshoot = real_time - now - 1;
- if (overshoot > forward_threshold && now_adj >= overshoot)
- {
- now_adj -= overshoot;
- real_time -= overshoot;
- }
- now = real_time;
- }
- else if (real_time < now - backward_trigger)
- now_adj += (now - real_time);
-}
-
-void
-update_now_usec (struct timeval *tv)
-{
- const time_t last = now;
- update_now (tv->tv_sec);
- if (now > last || (now == last && tv->tv_usec > now_usec))
- now_usec = tv->tv_usec;
-}
-
-#endif /* TIME_BACKTRACK_PROTECTION */
-
-/*
- * Return a numerical string describing a struct timeval.
- */
-const char *
-tv_string (const struct timeval *tv, struct gc_arena *gc)
-{
- struct buffer out = alloc_buf_gc (64, gc);
- buf_printf (&out, "[%d/%d]",
- (int) tv->tv_sec,
- (int )tv->tv_usec);
- return BSTR (&out);
-}
-
-/*
- * Return an ascii string describing an absolute
- * date/time in a struct timeval.
- *
- */
-const char *
-tv_string_abs (const struct timeval *tv, struct gc_arena *gc)
-{
- return time_string ((time_t) tv->tv_sec,
- (int) tv->tv_usec,
- true,
- gc);
-}
-
-/* format a time_t as ascii, or use current time if 0 */
-
-const char *
-time_string (time_t t, int usec, bool show_usec, struct gc_arena *gc)
-{
- struct buffer out = alloc_buf_gc (64, gc);
- struct timeval tv;
-
- if (t)
- {
- tv.tv_sec = t;
- tv.tv_usec = usec;
- }
- else
- {
- gettimeofday (&tv, NULL);
- }
-
- t = tv.tv_sec;
- buf_printf (&out, "%s", ctime(&t));
- buf_rmtail (&out, '\n');
-
- if (show_usec && tv.tv_usec)
- buf_printf (&out, " us=%d", (int)tv.tv_usec);
-
- return BSTR (&out);
-}
-
-/*
- * Limit the frequency of an event stream.
- *
- * Used to control maximum rate of new
- * incoming connections.
- */
-
-struct frequency_limit *
-frequency_limit_init (int max, int per)
-{
- struct frequency_limit *f;
-
- ASSERT (max >= 0 && per >= 0);
-
- ALLOC_OBJ (f, struct frequency_limit);
- f->max = max;
- f->per = per;
- f->n = 0;
- f->reset = 0;
- return f;
-}
-
-void
-frequency_limit_free (struct frequency_limit *f)
-{
- free (f);
-}
-
-bool
-frequency_limit_event_allowed (struct frequency_limit *f)
-{
- if (f->per)
- {
- bool ret;
- if (now >= f->reset + f->per)
- {
- f->reset = now;
- f->n = 0;
- }
- ret = (++f->n <= f->max);
- return ret;
- }
- else
- return true;
-}
-
-#ifdef TIME_TEST
-void
-time_test (void)
-{
- struct timeval tv;
- time_t t;
- int i;
- for (i = 0; i < 10000; ++i)
- {
- t = time(NULL);
- gettimeofday (&tv, NULL);
-#if 1
- msg (M_INFO, "t=%u s=%u us=%u",
- (unsigned int)t,
- (unsigned int)tv.tv_sec,
- (unsigned int)tv.tv_usec);
-#endif
- }
-}
-#endif