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 * $Id$ 37 */ 38 39 #ifndef lint 40 static char sccsid[] = "@(#)mail.c 8.1 (Berkeley) 5/31/93"; 41 #endif /* not lint */ 42 43 /* 44 * Routines to check for mail. (Perhaps make part of main.c?) 45 */ 46 47 #include "shell.h" 48 #include "exec.h" /* defines padvance() */ 49 #include "var.h" 50 #include "output.h" 51 #include "memalloc.h" 52 #include "error.h" 53 #include <sys/types.h> 54 #include <sys/stat.h> 55 56 57 #define MAXMBOXES 10 58 59 60 STATIC int nmboxes; /* number of mailboxes */ 61 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 62 63 64 65 /* 66 * Print appropriate message(s) if mail has arrived. If the argument is 67 * nozero, then the value of MAIL has changed, so we just update the 68 * values. 69 */ 70 71 void 72 chkmail(silent) { 73 register int i; 74 char *mpath; 75 char *p; 76 register char *q; 77 struct stackmark smark; 78 struct stat statb; 79 80 if (silent) 81 nmboxes = 10; 82 if (nmboxes == 0) 83 return; 84 setstackmark(&smark); 85 mpath = mpathset()? mpathval() : mailval(); 86 for (i = 0 ; i < nmboxes ; i++) { 87 p = padvance(&mpath, nullstr); 88 if (p == NULL) 89 break; 90 if (*p == '\0') 91 continue; 92 for (q = p ; *q ; q++); 93 if (q[-1] != '/') 94 abort(); 95 q[-1] = '\0'; /* delete trailing '/' */ 96 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 97 if (stat(p, &statb) < 0) 98 statb.st_mtime = 0; 99 if (statb.st_mtime > mailtime[i] && ! silent) { 100 out2str(pathopt? pathopt : "you have mail"); 101 out2c('\n'); 102 } 103 mailtime[i] = statb.st_mtime; 104 #else /* this is what it should do */ 105 if (stat(p, &statb) < 0) 106 statb.st_size = 0; 107 if (statb.st_size > mailtime[i] && ! silent) { 108 out2str(pathopt? pathopt : "you have mail"); 109 out2c('\n'); 110 } 111 mailtime[i] = statb.st_size; 112 #endif 113 } 114 nmboxes = i; 115 popstackmark(&smark); 116 } 117