03af2940f7
* libmisc/date_to_str.c (date_to_str): Do not crash if gmtime(3) returns NULL because the timestamp is far in the future. Reported-by: Paul Eggert <eggert@cs.ucla.edu> Co-developed-by: Paul Eggert <eggert@cs.ucla.edu> Signed-off-by: Alejandro Colomar <alx@kernel.org> Reviewed-by: Iker Pedrosa <ipedrosa@redhat.com>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
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* Copyright (c) 2021, Alejandro Colomar <alx.manpages@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string.h>
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#include <time.h>
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#ident "$Id$"
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#include "prototypes.h"
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void
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date_to_str(size_t size, char buf[size], long date)
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{
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time_t t;
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const struct tm *tm;
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t = date;
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if (date < 0) {
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(void) strlcpy(buf, "never", size);
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return;
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}
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tm = gmtime(&t);
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if (tm == NULL) {
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(void) strlcpy(buf, "future", size);
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return;
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}
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(void) strftime(buf, size, "%Y-%m-%d", tm);
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buf[size - 1] = '\0';
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}
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