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af3e82f7 WJ |
1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * 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. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #ifndef lint | |
38 | static char sccsid[] = "@(#)mail.c 5.1 (Berkeley) 3/7/91"; | |
39 | #endif /* not lint */ | |
40 | ||
41 | /* | |
42 | * Routines to check for mail. (Perhaps make part of main.c?) | |
43 | */ | |
44 | ||
45 | #include "shell.h" | |
46 | #include "exec.h" /* defines padvance() */ | |
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 | ||
54 | ||
55 | #define MAXMBOXES 10 | |
56 | ||
57 | ||
58 | STATIC int nmboxes; /* number of mailboxes */ | |
59 | STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ | |
60 | ||
61 | ||
62 | ||
63 | /* | |
64 | * Print appropriate message(s) if mail has arrived. If the argument is | |
65 | * nozero, then the value of MAIL has changed, so we just update the | |
66 | * values. | |
67 | */ | |
68 | ||
69 | void | |
70 | chkmail(silent) { | |
71 | register int i; | |
72 | char *mpath; | |
73 | char *p; | |
74 | register char *q; | |
75 | struct stackmark smark; | |
76 | struct stat statb; | |
77 | ||
78 | if (silent) | |
79 | nmboxes = 10; | |
80 | if (nmboxes == 0) | |
81 | return; | |
82 | setstackmark(&smark); | |
83 | mpath = mpathset()? mpathval() : mailval(); | |
84 | for (i = 0 ; i < nmboxes ; i++) { | |
85 | p = padvance(&mpath, nullstr); | |
86 | if (p == NULL) | |
87 | break; | |
88 | if (*p == '\0') | |
89 | continue; | |
90 | for (q = p ; *q ; q++); | |
91 | if (q[-1] != '/') | |
92 | abort(); | |
93 | q[-1] = '\0'; /* delete trailing '/' */ | |
94 | #ifdef notdef /* this is what the System V shell claims to do (it lies) */ | |
95 | if (stat(p, &statb) < 0) | |
96 | statb.st_mtime = 0; | |
97 | if (statb.st_mtime > mailtime[i] && ! silent) { | |
98 | out2str(pathopt? pathopt : "you have mail"); | |
99 | out2c('\n'); | |
100 | } | |
101 | mailtime[i] = statb.st_mtime; | |
102 | #else /* this is what it should do */ | |
103 | if (stat(p, &statb) < 0) | |
104 | statb.st_size = 0; | |
105 | if (statb.st_size > mailtime[i] && ! silent) { | |
106 | out2str(pathopt? pathopt : "you have mail"); | |
107 | out2c('\n'); | |
108 | } | |
109 | mailtime[i] = statb.st_size; | |
110 | #endif | |
111 | } | |
112 | nmboxes = i; | |
113 | popstackmark(&smark); | |
114 | } |