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 #if 0 39 static char sccsid[] = "@(#)mail.c 8.2 (Berkeley) 5/4/95"; 40 #endif 41 static const char rcsid[] = 42 "$FreeBSD$"; 43 #endif /* not lint */ 44 45 /* 46 * Routines to check for mail. (Perhaps make part of main.c?) 47 */ 48 49 #include "shell.h" 50 #include "exec.h" /* defines padvance() */ 51 #include "var.h" 52 #include "output.h" 53 #include "memalloc.h" 54 #include "error.h" 55 #include <sys/types.h> 56 #include <sys/stat.h> 57 58 59 #define MAXMBOXES 10 60 61 62 STATIC int nmboxes; /* number of mailboxes */ 63 STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 64 65 66 67 /* 68 * Print appropriate message(s) if mail has arrived. If the argument is 69 * nozero, then the value of MAIL has changed, so we just update the 70 * values. 71 */ 72 73 void 74 chkmail(silent) 75 int silent; 76 { 77 int i; 78 char *mpath; 79 char *p; 80 char *q; 81 struct stackmark smark; 82 struct stat statb; 83 84 if (silent) 85 nmboxes = 10; 86 if (nmboxes == 0) 87 return; 88 setstackmark(&smark); 89 mpath = mpathset()? mpathval() : mailval(); 90 for (i = 0 ; i < nmboxes ; i++) { 91 p = padvance(&mpath, nullstr); 92 if (p == NULL) 93 break; 94 if (*p == '\0') 95 continue; 96 for (q = p ; *q ; q++); 97 if (q[-1] != '/') 98 abort(); 99 q[-1] = '\0'; /* delete trailing '/' */ 100 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 101 if (stat(p, &statb) < 0) 102 statb.st_mtime = 0; 103 if (statb.st_mtime > mailtime[i] && ! silent) { 104 out2str(pathopt? pathopt : "you have mail"); 105 out2c('\n'); 106 } 107 mailtime[i] = statb.st_mtime; 108 #else /* this is what it should do */ 109 if (stat(p, &statb) < 0) 110 statb.st_size = 0; 111 if (statb.st_size > mailtime[i] && ! silent) { 112 out2str(pathopt? pathopt : "you have mail"); 113 out2c('\n'); 114 } 115 mailtime[i] = statb.st_size; 116 #endif 117 } 118 nmboxes = i; 119 popstackmark(&smark); 120 } 121