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 static char rcsid[] = "$Header: /cvsroot/src/bin/sh/mail.c,v 1.3 1993/03/23 00:28:18 cgd Exp $"; 40 #endif /* not lint */ 41 42 /* 43 * Routines to check for mail. (Perhaps make part of main.c?) 44 */ 45 46 #include "shell.h" 47 #include "exec.h" /* defines padvance() */ 48 #include "var.h" 49 #include "output.h" 50 #include "memalloc.h" 51 #include "error.h" 52 #include <sys/types.h> 53 #include <sys/stat.h> 54 55 56 #define MAXMBOXES 10 57 58 59 STATIC int nmboxes; /* number of mailboxes */ 60 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 61 62 63 64 /* 65 * Print appropriate message(s) if mail has arrived. If the argument is 66 * nozero, then the value of MAIL has changed, so we just update the 67 * values. 68 */ 69 70 void 71 chkmail(silent) { 72 register int i; 73 char *mpath; 74 char *p; 75 register char *q; 76 struct stackmark smark; 77 struct stat statb; 78 79 if (silent) 80 nmboxes = 10; 81 if (nmboxes == 0) 82 return; 83 setstackmark(&smark); 84 mpath = mpathset()? mpathval() : mailval(); 85 for (i = 0 ; i < nmboxes ; i++) { 86 p = padvance(&mpath, nullstr); 87 if (p == NULL) 88 break; 89 if (*p == '\0') 90 continue; 91 for (q = p ; *q ; q++); 92 if (q[-1] != '/') 93 abort(); 94 q[-1] = '\0'; /* delete trailing '/' */ 95 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 96 if (stat(p, &statb) < 0) 97 statb.st_mtime = 0; 98 if (statb.st_mtime > mailtime[i] && ! silent) { 99 out2str(pathopt? pathopt : "you have mail"); 100 out2c('\n'); 101 } 102 mailtime[i] = statb.st_mtime; 103 #else /* this is what it should do */ 104 if (stat(p, &statb) < 0) 105 statb.st_size = 0; 106 if (statb.st_size > mailtime[i] && ! silent) { 107 out2str(pathopt? pathopt : "you have mail"); 108 out2c('\n'); 109 } 110 mailtime[i] = statb.st_size; 111 #endif 112 } 113 nmboxes = i; 114 popstackmark(&smark); 115 } 116