| /* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include <osmocom/core/timer.h> |
| #include <osmocom/hlr/timestamp.h> |
| |
| /* Central implementation to set a timestamp to the current time, in case we want to modify this in the future. */ |
| void timestamp_update(timestamp_t *timestamp) |
| { |
| struct timeval tv; |
| time_t raw; |
| struct tm utc; |
| /* The simpler way would be just time(&raw), but by using osmo_gettimeofday() we can also use |
| * osmo_gettimeofday_override for unit tests independent from real time. */ |
| osmo_gettimeofday(&tv, NULL); |
| raw = tv.tv_sec; |
| gmtime_r(&raw, &utc); |
| *timestamp = mktime(&utc); |
| } |
| |
| /* Calculate seconds since a given timestamp was taken. Return true for a valid age returned in age_p, return false if |
| * the timestamp is either in the future or the age surpasses uint32_t range. When false is returned, *age_p is set to |
| * UINT32_MAX. */ |
| bool timestamp_age(const timestamp_t *timestamp, uint32_t *age_p) |
| { |
| int64_t age64; |
| timestamp_t now; |
| timestamp_update(&now); |
| age64 = (int64_t)now - (int64_t)(*timestamp); |
| if (age64 < 0 || age64 > UINT32_MAX) { |
| *age_p = UINT32_MAX; |
| return false; |
| } |
| *age_p = (uint32_t)age64; |
| return true; |
| } |
| |