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https://github.com/token2/fido2-manage.git
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76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
/*
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* Copyright (c) 2021 Yubico AB. All rights reserved.
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file.
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <errno.h>
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#include "fido.h"
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static int
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timespec_to_ms(const struct timespec *ts)
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{
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int64_t x, y;
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if (ts->tv_sec < 0 || ts->tv_nsec < 0 ||
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ts->tv_nsec >= 1000000000LL)
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return -1;
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if ((uint64_t)ts->tv_sec >= INT64_MAX / 1000LL)
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return -1;
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x = ts->tv_sec * 1000LL;
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y = ts->tv_nsec / 1000000LL;
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if (INT64_MAX - x < y || x + y > INT_MAX)
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return -1;
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return (int)(x + y);
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}
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int
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fido_time_now(struct timespec *ts_now)
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{
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if (clock_gettime(CLOCK_MONOTONIC, ts_now) != 0) {
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fido_log_error(errno, "%s: clock_gettime", __func__);
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return -1;
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}
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return 0;
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}
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int
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fido_time_delta(const struct timespec *ts_start, int *ms_remain)
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{
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struct timespec ts_end, ts_delta;
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int ms;
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if (*ms_remain < 0)
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return 0;
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if (clock_gettime(CLOCK_MONOTONIC, &ts_end) != 0) {
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fido_log_error(errno, "%s: clock_gettime", __func__);
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return -1;
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}
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if (timespeccmp(&ts_end, ts_start, <)) {
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fido_log_debug("%s: timespeccmp", __func__);
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return -1;
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}
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timespecsub(&ts_end, ts_start, &ts_delta);
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if ((ms = timespec_to_ms(&ts_delta)) < 0) {
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fido_log_debug("%s: timespec_to_ms", __func__);
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return -1;
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}
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if (ms > *ms_remain)
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ms = *ms_remain;
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*ms_remain -= ms;
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return 0;
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}
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