mail_cmds/mail/temp.c

   1 /*
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 #if 0
  36 static char sccsid[] = "@(#)temp.c      8.1 (Berkeley) 6/6/93";
  37 #endif
  38 static const char rcsid[] =
  39   "$FreeBSD: src/usr.bin/mail/temp.c,v 1.9 2002/06/30 05:25:06 obrien Exp $";
  40 #endif /* not lint */
  41
  42 #include <sys/cdefs.h>
  43
  44 #include "rcv.h"
  45 #include "extern.h"
  46
  47 /*
  48  * Mail -- a mail program
  49  *
  50  * Give names to all the temporary files that we will need.
  51  */
  52
  53 char    *tmpdir;
  54
  55 void
  56 tinit()
  57 {
  58         char *cp;
  59
  60         if ((tmpdir = getenv("TMPDIR")) == NULL || *tmpdir == '\0')
  61                 tmpdir = _PATH_TMP;
  62         if ((tmpdir = strdup(tmpdir)) == NULL)
  63                 errx(1, "Out of memory");
  64         /* Strip trailing '/' if necessary */
  65         cp = tmpdir + strlen(tmpdir) - 1;
  66         while (cp > tmpdir && *cp == '/') {
  67                 *cp = '\0';
  68                 cp--;
  69         }
  70
  71         /*
  72          * It's okay to call savestr in here because main will
  73          * do a spreserve() after us.
  74          */
  75         if (myname != NULL) {
  76                 if (getuserid(myname) < 0)
  77                         errx(1, "\"%s\" is not a user of this system", myname);
  78         } else {
  79                 if ((cp = username()) == NULL) {
  80                         myname = "ubluit";
  81                         if (rcvmode)
  82                                 errx(1, "Who are you!?");
  83                 } else
  84                         myname = savestr(cp);
  85         }
  86         if ((cp = getenv("HOME")) == NULL || *cp == '\0' ||
  87             strlen(cp) >= PATHSIZE)
  88                 homedir = NULL;
  89         else
  90                 homedir = savestr(cp);
  91         if (debug)
  92                 fprintf(stderr, "user = %s, homedir = %s\n", myname,
  93                     homedir ? homedir : "NONE");
  94 }