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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)mail.c 8.2 (Berkeley) 5/4/95"; 36 #endif 37 #endif /* not lint */ 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD: head/bin/sh/mail.c 336303 2018-07-15 09:14:30Z jilles $"); 40 41 /* 42 * Routines to check for mail. (Perhaps make part of main.c?) 43 */ 44 45 #include "shell.h" 46 #include "mail.h" 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 #include <stdlib.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(int silent) 72 { 73 int i; 74 char *mpath; 75 char *p; 76 char *msg; 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 = stsavestr(mpathset()? mpathval() : mailval()); 86 for (i = 0 ; i < nmboxes ; i++) { 87 p = mpath; 88 if (*p == '\0') 89 break; 90 mpath = strchrnul(mpath, ':'); 91 if (*mpath != '\0') { 92 *mpath++ = '\0'; 93 if (p == mpath - 1) 94 continue; 95 } 96 msg = strchr(p, '%'); 97 if (msg != NULL) 98 *msg++ = '\0'; 99 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 100 if (stat(p, &statb) < 0) 101 statb.st_mtime = 0; 102 if (statb.st_mtime > mailtime[i] && ! silent) { 103 out2str(msg? msg : "you have mail"); 104 out2c('\n'); 105 } 106 mailtime[i] = statb.st_mtime; 107 #else /* this is what it should do */ 108 if (stat(p, &statb) < 0) 109 statb.st_size = 0; 110 if (statb.st_size > mailtime[i] && ! silent) { 111 out2str(msg? msg : "you have mail"); 112 out2c('\n'); 113 } 114 mailtime[i] = statb.st_size; 115 #endif 116 } 117 nmboxes = i; 118 popstackmark(&smark); 119 } 120