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 /*
34 * Routines to check for mail. (Perhaps make part of main.c?)
35 */
36
37 #include "shell.h"
38 #include "mail.h"
39 #include "var.h"
40 #include "output.h"
41 #include "memalloc.h"
42 #include "error.h"
43 #include <sys/types.h>
44 #include <sys/stat.h>
45 #include <stdlib.h>
46
47
48 #define MAXMBOXES 10
49
50
51 static int nmboxes; /* number of mailboxes */
52 static time_t mailtime[MAXMBOXES]; /* times of mailboxes */
53
54
55
56 /*
57 * Print appropriate message(s) if mail has arrived. If the argument is
58 * non-zero, then the value of MAIL has changed, so we just update the
59 * values.
60 */
61
62 void
chkmail(int silent)63 chkmail(int silent)
64 {
65 int i;
66 char *mpath;
67 char *p;
68 char *msg;
69 struct stackmark smark;
70 struct stat statb;
71
72 if (silent)
73 nmboxes = 10;
74 if (nmboxes == 0)
75 return;
76 setstackmark(&smark);
77 mpath = stsavestr(mpathset()? mpathval() : mailval());
78 for (i = 0 ; i < nmboxes ; i++) {
79 p = mpath;
80 if (*p == '\0')
81 break;
82 mpath = strchrnul(mpath, ':');
83 if (*mpath != '\0') {
84 *mpath++ = '\0';
85 if (p == mpath - 1)
86 continue;
87 }
88 msg = strchr(p, '%');
89 if (msg != NULL)
90 *msg++ = '\0';
91 #ifdef notdef /* this is what the System V shell claims to do (it lies) */
92 if (stat(p, &statb) < 0)
93 statb.st_mtime = 0;
94 if (statb.st_mtime > mailtime[i] && ! silent) {
95 out2str(msg? msg : "you have mail");
96 out2c('\n');
97 }
98 mailtime[i] = statb.st_mtime;
99 #else /* this is what it should do */
100 if (stat(p, &statb) < 0)
101 statb.st_size = 0;
102 if (statb.st_size > mailtime[i] && ! silent) {
103 out2str(msg? msg : "you have mail");
104 out2c('\n');
105 }
106 mailtime[i] = statb.st_size;
107 #endif
108 }
109 nmboxes = i;
110 popstackmark(&smark);
111 }
112