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- // $Id: expired.C,v 1.12 1998/04/29 15:33:30 zeller Exp $ -*- C++ -*-
- // Check for expiration date
-
- // Copyright (C) 1996 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD 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; either
- // version 2 of the License, or (at your option) any later version.
- //
- // DDD 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 DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- char expired_rcsid[] =
- "$Id: expired.C,v 1.12 1998/04/29 15:33:30 zeller Exp $";
-
- #ifdef __GNUG__
- #pragma implementation
- #endif
-
- #include "expired.h"
-
- #include "version.h"
- #include <stdio.h>
- #include <time.h>
- #if !HAVE_DIFFTIME
- inline double difftime(time_t time1, time_t time0) { return time1 - time0; }
- #endif
-
-
- //-----------------------------------------------------------------------------
- // Check expiration date
- //-----------------------------------------------------------------------------
-
- // Return expiration time. 0: no expiration time, -1: invalid expiration time.
- static time_t ddd_expiration_time()
- {
- string expiration_date = DDD_EXPIRES;
- if (expiration_date == "")
- {
- // No expiration date given
- return 0;
- }
-
- int year = 0;
- int month = 0;
- int day = 0;
- sscanf(expiration_date.chars(), "%d-%d-%d", &year, &month, &day);
- if (year == 0 || month == 0 || day == 0)
- return -1;
-
- struct tm expiration_tm;
- expiration_tm.tm_sec = 0;
- expiration_tm.tm_min = 0;
- expiration_tm.tm_hour = 0;
- expiration_tm.tm_mday = day;
- expiration_tm.tm_mon = month - 1;
- expiration_tm.tm_year = year - 1900; // No, this is no Y2K problem. -AZ
- expiration_tm.tm_wday = -1;
- expiration_tm.tm_yday = -1;
- expiration_tm.tm_isdst = -1;
-
- time_t expiration_time = mktime(&expiration_tm);
- if (expiration_time < 0)
- return -1;
-
- return expiration_time;
- }
-
- string ddd_expiration_date()
- {
- time_t expiration_time = ddd_expiration_time();
- if (expiration_time == 0)
- return ""; // No expiration
- else if (expiration_time < 0)
- return "the epoch"; // Invalid time
-
- string pretty_expiration_date;
-
- #if HAVE_STRFTIME
- char buffer[1024];
- strftime(buffer, sizeof buffer, "%A, %Y-%m-%d, at %H:%M",
- localtime(&expiration_time));
- pretty_expiration_date = buffer;
- #elif HAVE_ASCTIME
- pretty_expiration_date = asctime(localtime(&expiration_time));
- pretty_expiration_date.gsub("\n", "");
- #else
- pretty_expiration_date = DDD_EXPIRES;
- #endif
-
- return pretty_expiration_date;
- }
-
- bool ddd_expired()
- {
- time_t expiration_time = ddd_expiration_time();
- if (expiration_time == 0)
- {
- // No expiration time -- this never ever expires.
- return false;
- }
- else if (expiration_time < 0)
- {
- // Invalid expiration time -- consider as expired.
- return true;
- }
-
- time_t current_time = time((time_t)0);
- if (current_time < 0)
- {
- // No current time -- consider as expired.
- return true;
- }
-
- double seconds_since_expiration = difftime(current_time, expiration_time);
- if (seconds_since_expiration <= 0)
- {
- // Still within expiration date
- return false;
- }
-
- // Expired.
- return true;
- }
-