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. 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[] = "from: @(#)mail.c 8.1 (Berkeley) 5/31/93";*/ 39 static char *rcsid = "$Id: mail.c,v 1.7 1994/12/04 07:12:17 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 int silent; 73 { 74 register int i; 75 char *mpath; 76 char *p; 77 register char *q; 78 struct stackmark smark; 79 struct stat statb; 80 81 if (silent) 82 nmboxes = 10; 83 if (nmboxes == 0) 84 return; 85 setstackmark(&smark); 86 mpath = mpathset()? mpathval() : mailval(); 87 for (i = 0 ; i < nmboxes ; i++) { 88 p = padvance(&mpath, nullstr); 89 if (p == NULL) 90 break; 91 if (*p == '\0') 92 continue; 93 for (q = p ; *q ; q++); 94 if (q[-1] != '/') 95 abort(); 96 q[-1] = '\0'; /* delete trailing '/' */ 97 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 98 if (stat(p, &statb) < 0) 99 statb.st_mtime = 0; 100 if (statb.st_mtime > mailtime[i] && ! silent) { 101 out2str(pathopt? pathopt : "you have mail"); 102 out2c('\n'); 103 } 104 mailtime[i] = statb.st_mtime; 105 #else /* this is what it should do */ 106 if (stat(p, &statb) < 0) 107 statb.st_size = 0; 108 if (statb.st_size > mailtime[i] && ! silent) { 109 out2str(pathopt? pathopt : "you have mail"); 110 out2c('\n'); 111 } 112 mailtime[i] = statb.st_size; 113 #endif 114 } 115 nmboxes = i; 116 popstackmark(&smark); 117 } 118