Merge branch 'vendor/OPENSSL'
[dragonfly.git] / bin / sh / mail.c
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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.
dc71b7ab 16 * 3. Neither the name of the University nor the names of its contributors
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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.
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31 *
32 * @(#)mail.c 8.2 (Berkeley) 5/4/95
f00eae14 33 * $FreeBSD: head/bin/sh/mail.c 213760 2010-10-13 04:01:01Z obrien $
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34 */
35
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36/*
37 * Routines to check for mail. (Perhaps make part of main.c?)
38 */
39
40#include "shell.h"
41#include "exec.h" /* defines padvance() */
99512ac4 42#include "mail.h"
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43#include "var.h"
44#include "output.h"
45#include "memalloc.h"
46#include "error.h"
47#include <sys/types.h>
48#include <sys/stat.h>
49#include <stdlib.h>
50
51
52#define MAXMBOXES 10
53
54
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55static int nmboxes; /* number of mailboxes */
56static time_t mailtime[MAXMBOXES]; /* times of mailboxes */
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57
58
59
60/*
61 * Print appropriate message(s) if mail has arrived. If the argument is
62 * nozero, then the value of MAIL has changed, so we just update the
63 * values.
64 */
65
66void
67chkmail(int silent)
68{
69 int i;
492efe05 70 const char *mpath;
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71 char *p;
72 char *q;
73 struct stackmark smark;
74 struct stat statb;
75
76 if (silent)
77 nmboxes = 10;
78 if (nmboxes == 0)
79 return;
80 setstackmark(&smark);
81 mpath = mpathset()? mpathval() : mailval();
82 for (i = 0 ; i < nmboxes ; i++) {
83 p = padvance(&mpath, nullstr);
84 if (p == NULL)
85 break;
86 if (*p == '\0')
87 continue;
88 for (q = p ; *q ; q++);
89 if (q[-1] != '/')
90 abort();
91 q[-1] = '\0'; /* delete trailing '/' */
92#ifdef notdef /* this is what the System V shell claims to do (it lies) */
93 if (stat(p, &statb) < 0)
94 statb.st_mtime = 0;
95 if (statb.st_mtime > mailtime[i] && ! silent) {
96 out2str(pathopt? pathopt : "you have mail");
97 out2c('\n');
98 }
99 mailtime[i] = statb.st_mtime;
100#else /* this is what it should do */
101 if (stat(p, &statb) < 0)
102 statb.st_size = 0;
103 if (statb.st_size > mailtime[i] && ! silent) {
104 out2str(pathopt? pathopt : "you have mail");
105 out2c('\n');
106 }
107 mailtime[i] = statb.st_size;
108#endif
109 }
110 nmboxes = i;
111 popstackmark(&smark);
112}