1/*-
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)mail.c	8.2 (Berkeley) 5/4/95";
36#endif
37#endif /* not lint */
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD$");
40
41/*
42 * Routines to check for mail.  (Perhaps make part of main.c?)
43 */
44
45#include "shell.h"
46#include "mail.h"
47#include "var.h"
48#include "output.h"
49#include "memalloc.h"
50#include "error.h"
51#include <sys/types.h>
52#include <sys/stat.h>
53#include <stdlib.h>
54
55
56#define MAXMBOXES 10
57
58
59static int nmboxes;			/* number of mailboxes */
60static time_t mailtime[MAXMBOXES];	/* times of mailboxes */
61
62
63
64/*
65 * Print appropriate message(s) if mail has arrived.  If the argument is
66 * nozero, then the value of MAIL has changed, so we just update the
67 * values.
68 */
69
70void
71chkmail(int silent)
72{
73	int i;
74	char *mpath;
75	char *p;
76	char *msg;
77	struct stackmark smark;
78	struct stat statb;
79
80	if (silent)
81		nmboxes = 10;
82	if (nmboxes == 0)
83		return;
84	setstackmark(&smark);
85	mpath = stsavestr(mpathset()? mpathval() : mailval());
86	for (i = 0 ; i < nmboxes ; i++) {
87		p = mpath;
88		if (*p == '\0')
89			break;
90		mpath = strchrnul(mpath, ':');
91		if (*mpath != '\0') {
92			*mpath++ = '\0';
93			if (p == mpath - 1)
94				continue;
95		}
96		msg = strchr(p, '%');
97		if (msg != NULL)
98			*msg++ = '\0';
99#ifdef notdef /* this is what the System V shell claims to do (it lies) */
100		if (stat(p, &statb) < 0)
101			statb.st_mtime = 0;
102		if (statb.st_mtime > mailtime[i] && ! silent) {
103			out2str(msg? msg : "you have mail");
104			out2c('\n');
105		}
106		mailtime[i] = statb.st_mtime;
107#else /* this is what it should do */
108		if (stat(p, &statb) < 0)
109			statb.st_size = 0;
110		if (statb.st_size > mailtime[i] && ! silent) {
111			out2str(msg? msg : "you have mail");
112			out2c('\n');
113		}
114		mailtime[i] = statb.st_size;
115#endif
116	}
117	nmboxes = i;
118	popstackmark(&smark);
119}
120