76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/*
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* Copyright (c) 1991 - 1994, Julianne Frances Haugh
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* Copyright (c) 1991 - 1994, Chip Rosenthal
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* Copyright (c) 1996 - 1998, Marek Michałkiewicz
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* Copyright (c) 2003 - 2005, Tomasz Kłoczko
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* Copyright (c) 2007 - 2008, Nicolas François
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* All rights reserved.
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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 <config.h>
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#ifndef USE_PAM
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#ident "$Id$"
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#include <stdio.h>
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#include <string.h>
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#include "defines.h"
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#include "prototypes.h"
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#include "getdef.h"
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/*
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* tz - return local timezone name
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*
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* tz() determines the name of the local timezone by reading the
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* contents of the file named by ``fname''.
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*/
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char *tz (const char *fname)
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{
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FILE *fp = 0;
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static char tzbuf[BUFSIZ];
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const char *def_tz = "TZ=CST6CDT";
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if ((fp = fopen (fname, "r")) == NULL ||
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fgets (tzbuf, (int) sizeof (tzbuf), fp) == NULL) {
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if (!(def_tz = getdef_str ("ENV_TZ")) || def_tz[0] == '/')
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def_tz = "TZ=CST6CDT";
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strcpy (tzbuf, def_tz);
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} else
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tzbuf[strlen (tzbuf) - 1] = '\0';
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if (fp)
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(void) fclose (fp);
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return tzbuf;
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}
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#else /* !USE_PAM */
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extern int errno; /* warning: ANSI C forbids an empty source file */
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#endif /* !USE_PAM */
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