1 /* $NetBSD: mail.c,v 1.15 2002/11/24 22:35:40 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Kenneth Almquist. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)mail.c 8.2 (Berkeley) 5/4/95"; 43 #else 44 __RCSID("$NetBSD: mail.c,v 1.15 2002/11/24 22:35:40 christos Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 /* 49 * Routines to check for mail. (Perhaps make part of main.c?) 50 */ 51 #include <sys/types.h> 52 #include <sys/stat.h> 53 #include <stdlib.h> 54 55 #include "shell.h" 56 #include "exec.h" /* defines padvance() */ 57 #include "var.h" 58 #include "output.h" 59 #include "memalloc.h" 60 #include "error.h" 61 #include "mail.h" 62 63 64 #define MAXMBOXES 10 65 66 67 STATIC int nmboxes; /* number of mailboxes */ 68 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 69 70 71 72 /* 73 * Print appropriate message(s) if mail has arrived. If the argument is 74 * nozero, then the value of MAIL has changed, so we just update the 75 * values. 76 */ 77 78 void 79 chkmail(int silent) 80 { 81 int i; 82 const char *mpath; 83 char *p; 84 char *q; 85 struct stackmark smark; 86 struct stat statb; 87 88 if (silent) 89 nmboxes = 10; 90 if (nmboxes == 0) 91 return; 92 setstackmark(&smark); 93 mpath = mpathset() ? mpathval() : mailval(); 94 for (i = 0 ; i < nmboxes ; i++) { 95 p = padvance(&mpath, nullstr); 96 if (p == NULL) 97 break; 98 if (*p == '\0') 99 continue; 100 for (q = p ; *q ; q++); 101 if (q[-1] != '/') 102 abort(); 103 q[-1] = '\0'; /* delete trailing '/' */ 104 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 105 if (stat(p, &statb) < 0) 106 statb.st_mtime = 0; 107 if (statb.st_mtime > mailtime[i] && ! silent) { 108 out2str(pathopt ? pathopt : "you have mail"); 109 out2c('\n'); 110 } 111 mailtime[i] = statb.st_mtime; 112 #else /* this is what it should do */ 113 if (stat(p, &statb) < 0) 114 statb.st_size = 0; 115 if (statb.st_size > mailtime[i] && ! silent) { 116 out2str(pathopt ? pathopt : "you have mail"); 117 out2c('\n'); 118 } 119 mailtime[i] = statb.st_size; 120 #endif 121 } 122 nmboxes = i; 123 popstackmark(&smark); 124 } 125