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 * @(#)mail.c 8.2 (Berkeley) 5/4/95 33 * $FreeBSD: head/bin/sh/mail.c 213760 2010-10-13 04:01:01Z obrien $ 34 */ 35 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() */ 42 #include "mail.h" 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 55 static int nmboxes; /* number of mailboxes */ 56 static time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 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 66 void 67 chkmail(int silent) 68 { 69 int i; 70 const char *mpath; 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 } 113