1 /* $NetBSD: mail.c,v 1.8 1995/03/21 09:09:22 cgd 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 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)mail.c 8.1 (Berkeley) 5/31/93"; 42 #else 43 static char rcsid[] = "$NetBSD: mail.c,v 1.8 1995/03/21 09:09:22 cgd Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 /* 48 * Routines to check for mail. (Perhaps make part of main.c?) 49 */ 50 51 #include "shell.h" 52 #include "exec.h" /* defines padvance() */ 53 #include "var.h" 54 #include "output.h" 55 #include "memalloc.h" 56 #include "error.h" 57 #include <sys/types.h> 58 #include <sys/stat.h> 59 60 61 #define MAXMBOXES 10 62 63 64 STATIC int nmboxes; /* number of mailboxes */ 65 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 66 67 68 69 /* 70 * Print appropriate message(s) if mail has arrived. If the argument is 71 * nozero, then the value of MAIL has changed, so we just update the 72 * values. 73 */ 74 75 void 76 chkmail(silent) 77 int silent; 78 { 79 register int i; 80 char *mpath; 81 char *p; 82 register char *q; 83 struct stackmark smark; 84 struct stat statb; 85 86 if (silent) 87 nmboxes = 10; 88 if (nmboxes == 0) 89 return; 90 setstackmark(&smark); 91 mpath = mpathset()? mpathval() : mailval(); 92 for (i = 0 ; i < nmboxes ; i++) { 93 p = padvance(&mpath, nullstr); 94 if (p == NULL) 95 break; 96 if (*p == '\0') 97 continue; 98 for (q = p ; *q ; q++); 99 if (q[-1] != '/') 100 abort(); 101 q[-1] = '\0'; /* delete trailing '/' */ 102 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 103 if (stat(p, &statb) < 0) 104 statb.st_mtime = 0; 105 if (statb.st_mtime > mailtime[i] && ! silent) { 106 out2str(pathopt? pathopt : "you have mail"); 107 out2c('\n'); 108 } 109 mailtime[i] = statb.st_mtime; 110 #else /* this is what it should do */ 111 if (stat(p, &statb) < 0) 112 statb.st_size = 0; 113 if (statb.st_size > mailtime[i] && ! silent) { 114 out2str(pathopt? pathopt : "you have mail"); 115 out2c('\n'); 116 } 117 mailtime[i] = statb.st_size; 118 #endif 119 } 120 nmboxes = i; 121 popstackmark(&smark); 122 } 123