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