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mail.c

/*    $NetBSD: mail.c,v 1.15 2002/11/24 22:35:40 christos Exp $   */

/*-
 * Copyright (c) 1991, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the University of
 *    California, Berkeley and its contributors.
 * 4. 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.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)mail.c  8.2 (Berkeley) 5/4/95";
#else
__RCSID("$NetBSD: mail.c,v 1.15 2002/11/24 22:35:40 christos Exp $");
#endif
#endif /* not lint */

/*
 * Routines to check for mail.  (Perhaps make part of main.c?)
 */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>

#include "shell.h"
#include "nodes.h"
#include "exec.h" /* defines padvance() */
#include "var.h"
#include "output.h"
#include "memalloc.h"
#include "error.h"
#include "mail.h"
#include "mystring.h"


#define MAXMBOXES 10

/* times of mailboxes */
static time_t mailtime[MAXMBOXES];
/* Set if MAIL or MAILPATH is changed. */
static int changed;



/*
 * Print appropriate message(s) if mail has arrived.  If changed is set,
 * then the value of MAIL has changed, so we just update the values.
 */

void
chkmail(void)
{
      const char *mpath;
      char *p;
      char *q;
      time_t *mtp;
      struct stackmark smark;
      struct stat64 statb;

      setstackmark(&smark);
      mpath = mpathset() ? mpathval() : mailval();
      for (mtp = mailtime; mtp < mailtime + MAXMBOXES; mtp++) {
            p = padvance(&mpath, nullstr);
            if (p == NULL)
                  break;
            if (*p == '\0')
                  continue;
            for (q = p ; *q ; q++);
#ifdef DEBUG
            if (q[-1] != '/')
                  abort();
#endif
            q[-1] = '\0';                 /* delete trailing '/' */
            if (stat64(p, &statb) < 0) {
                  *mtp = 0;
                  continue;
            }
            if (!changed && statb.st_mtime != *mtp) {
                  outfmt(
                        &errout, snlfmt,
                        pathopt ? pathopt : "you have mail"
                  );
            }
            *mtp = statb.st_mtime;
      }
      changed = 0;
      popstackmark(&smark);
}


void
changemail(const char *val)
{
      changed++;
}

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