1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Kenneth Almquist. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Routines to check for mail. (Perhaps make part of main.c?) 37 */ 38 39 #include "shell.h" 40 #include "mail.h" 41 #include "var.h" 42 #include "output.h" 43 #include "memalloc.h" 44 #include "error.h" 45 #include <sys/types.h> 46 #include <sys/stat.h> 47 #include <stdlib.h> 48 49 50 #define MAXMBOXES 10 51 52 53 static int nmboxes; /* number of mailboxes */ 54 static time_t mailtime[MAXMBOXES]; /* times of mailboxes */ 55 56 57 58 /* 59 * Print appropriate message(s) if mail has arrived. If the argument is 60 * non-zero, then the value of MAIL has changed, so we just update the 61 * values. 62 */ 63 64 void 65 chkmail(int silent) 66 { 67 int i; 68 char *mpath; 69 char *p; 70 char *msg; 71 struct stackmark smark; 72 struct stat statb; 73 74 if (silent) 75 nmboxes = 10; 76 if (nmboxes == 0) 77 return; 78 setstackmark(&smark); 79 mpath = stsavestr(mpathset()? mpathval() : mailval()); 80 for (i = 0 ; i < nmboxes ; i++) { 81 p = mpath; 82 if (*p == '\0') 83 break; 84 mpath = strchrnul(mpath, ':'); 85 if (*mpath != '\0') { 86 *mpath++ = '\0'; 87 if (p == mpath - 1) 88 continue; 89 } 90 msg = strchr(p, '%'); 91 if (msg != NULL) 92 *msg++ = '\0'; 93 #ifdef notdef /* this is what the System V shell claims to do (it lies) */ 94 if (stat(p, &statb) < 0) 95 statb.st_mtime = 0; 96 if (statb.st_mtime > mailtime[i] && ! silent) { 97 out2str(msg? msg : "you have mail"); 98 out2c('\n'); 99 } 100 mailtime[i] = statb.st_mtime; 101 #else /* this is what it should do */ 102 if (stat(p, &statb) < 0) 103 statb.st_size = 0; 104 if (statb.st_size > mailtime[i] && ! silent) { 105 out2str(msg? msg : "you have mail"); 106 out2c('\n'); 107 } 108 mailtime[i] = statb.st_size; 109 #endif 110 } 111 nmboxes = i; 112 popstackmark(&smark); 113 } 114