v7.local.c

   1 /*
   2  * S-nail - a mail user agent derived from Berkeley Mail.
   3  *
   4  * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
   5  * Copyright (c) 2012 Steffen "Daode" Nurpmeso.
   6  */
   7 /*
   8  * Copyright (c) 1980, 1993
   9  *      The Regents of the University of California.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  */
  39
  40 /*
  41  * Mail -- a mail program
  42  *
  43  * Version 7
  44  *
  45  * Local routines that are installation dependent.
  46  */
  47
  48 #include "rcv.h"
  49 #include "extern.h"
  50 #include <sys/stat.h>
  51 #include <fcntl.h>
  52 #include <unistd.h>
  53
  54 /*
  55  * Locate the user's mailbox file (ie, the place where new, unread
  56  * mail is queued).
  57  */
  58 void
  59 findmail(char *user, int force, char *buf, int size)
  60 {
  61         char *mbox, *cp;
  62
  63         if (strcmp(user, myname) == 0 && !force &&
  64                         (cp = value("folder")) != NULL &&
  65                         which_protocol(cp) == PROTO_IMAP) {
  66                 snprintf(buf, size, "%s/INBOX", protbase(cp));
  67         } else if (force || (mbox = value("MAIL")) == NULL) {
  68                 snprintf(buf, size, "%s/%s", MAILSPOOL, user);
  69         } else {
  70                 strncpy(buf, mbox, size);
  71                 buf[size-1]='\0';
  72         }
  73 }
  74
  75 /*
  76  * Get rid of the queued mail.
  77  */
  78 void
  79 demail(void)
  80 {
  81
  82         if (value("keep") != NULL || rm(mailname) < 0)
  83                 close(creat(mailname, 0600));
  84 }
  85
  86 /*
  87  * Discover user login name.
  88  */
  89 char *
  90 username(void)
  91 {
  92         char *np;
  93         uid_t uid;
  94
  95         if ((np = getenv("USER")) != NULL)
  96                 return np;
  97         if ((np = getname(uid = getuid())) != NULL)
  98                 return np;
  99         printf(catgets(catd, CATSET, 201,
 100                 "Cannot associate a name with uid %d\n"), (int)uid);
 101         return NULL;
 102 }