usr.bin/mail/temp.c

   1 /*      $NetBSD: temp.c,v 1.18 2005/07/19 23:07:10 christos Exp $       */
   2
   3 /*
   4  * Copyright (c) 1980, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)temp.c      8.1 (Berkeley) 6/6/93";
  36 #else
  37 __RCSID("$NetBSD: temp.c,v 1.18 2005/07/19 23:07:10 christos Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include "rcv.h"
  42 #include <util.h>
  43 #include "extern.h"
  44
  45 /*
  46  * Mail -- a mail program
  47  *
  48  * Give names to all the temporary files that we will need.
  49  */
  50
  51 PUBLIC void
  52 tinit(void)
  53 {
  54         char pathbuf[MAXPATHLEN];
  55         const char *cp;
  56         char *p;
  57
  58         /*
  59          * It's okay to call savestr in here because main will
  60          * do a spreserve() after us.
  61          */
  62         if ((cp = getenv("TMPDIR")) == NULL || *cp == '\0')
  63                 cp = _PATH_TMP;
  64
  65         tmpdir = savestr(cp);
  66
  67         /* Remove trailing slashes. */
  68         p = tmpdir + strlen(tmpdir) - 1;
  69         while (p > tmpdir && *p == '/') {
  70                 *p = '\0';
  71                 p--;
  72         }
  73
  74         if (myname != NULL) {
  75                 if (getuserid(myname) < 0)
  76                         errx(1, "\"%s\" is not a user of this system", myname);
  77         }
  78         else {
  79                 if ((cp = username()) == NULL) {
  80                         myname = savestr("nobody");
  81                         if (mailmode == mm_receiving)
  82                                 errx(EXIT_FAILURE, "who am I receiving for?");
  83                 } else
  84                         myname = savestr(cp);
  85         }
  86         if ((cp = getenv("HOME")) == NULL)
  87                 cp = ".";
  88         homedir = savestr(cp);
  89
  90         if (getcwd(pathbuf, sizeof(pathbuf)) != NULL)
  91                 origdir = savestr(pathbuf);
  92         else {
  93                 warn("getcwd");
  94                 origdir = savestr(".");
  95         }
  96
  97         if (debug)
  98                 (void)printf("user = %s, homedir = %s, origdir = %s\n",
  99                     myname, homedir, origdir);
 100 }