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temp.c

/*    $OpenBSD: temp.c,v 1.14 2003/06/03 02:56:11 millert Exp $   */
/*    $NetBSD: temp.c,v 1.5 1996/06/08 19:48:42 christos Exp $    */

/*
 * Copyright (c) 1980, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
#if 0
static const char sccsid[] = "@(#)temp.c  8.1 (Berkeley) 6/6/93";
#else
static const char rcsid[] = "$OpenBSD: temp.c,v 1.14 2003/06/03 02:56:11 millert Exp $";
#endif
#endif /* not lint */

#include "rcv.h"
#include <errno.h>
#include <stdio.h>
#include "extern.h"

/*
 * Mail -- a mail program
 *
 * Give names to all the temporary files that we will need.
 */

char *tmpdir;

void
tinit(void)
{
      char *cp;

      if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
            tmpdir = _PATH_TMP;
      if ((tmpdir = strdup(tmpdir)) == NULL)
            errx(1, "Out of memory");

      /* Strip trailing '/' if necessary */
      cp = tmpdir + strlen(tmpdir) - 1;
      while (cp > tmpdir && *cp == '/') {
            *cp = '\0';
            cp--;
      }

      /*
       * It's okay to call savestr in here because main will
       * do a spreserve() after us.
       */
      if (myname != NULL) {
            if (getuserid(myname) == UID_MAX)
                  errx(1, "\"%s\" is not a user of this system", myname);
      } else {
            if ((cp = username()) == NULL) {
                  myname = "nobody";
                  if (rcvmode)
                        exit(1);
            } else
                  myname = savestr(cp);
      }
      if ((cp = getenv("HOME")) == NULL || *cp == '\0' ||
          strlen(cp) >= PATHSIZE)
            homedir = NULL;
      else
            homedir = savestr(cp);
      if (debug)
            printf("user = %s, homedir = %s\n", myname,
                homedir ? homedir : "NONE");
}

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