145 lines
3.9 KiB
C
145 lines
3.9 KiB
C
/* $NetBSD: mail.c,v 1.18 2017/06/04 20:28:13 kre Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mail.c 8.2 (Berkeley) 5/4/95";
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#else
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__RCSID("$NetBSD: mail.c,v 1.18 2017/06/04 20:28:13 kre Exp $");
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#endif
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#endif /* not lint */
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/*
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* Routines to check for mail. (Perhaps make part of main.c?)
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <string.h>
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#include "shell.h"
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#include "exec.h" /* defines padvance() */
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#include "var.h"
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#include "output.h"
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#include "memalloc.h"
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#include "error.h"
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#include "mail.h"
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#define MAXMBOXES 10
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STATIC int nmboxes; /* number of mailboxes */
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STATIC off_t mailsize[MAXMBOXES]; /* sizes of mailboxes */
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/*
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* Print appropriate message(s) if mail has arrived. If the argument is
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* nozero, then the value of MAIL has changed, so we just update the
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* values.
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*/
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void
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chkmail(int silent)
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{
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int i;
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const char *mpath;
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char *p;
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char *q;
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struct stackmark smark;
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struct stat statb;
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if (silent)
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nmboxes = 10;
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if (nmboxes == 0)
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return;
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setstackmark(&smark);
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mpath = mpathset() ? mpathval() : mailval();
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for (i = 0 ; i < nmboxes ; i++) {
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p = padvance(&mpath, nullstr, 1);
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if (p == NULL)
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break;
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stunalloc(p);
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if (*p == '\0')
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continue;
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for (q = p ; *q ; q++)
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;
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if (q[-1] != '/')
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abort();
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q[-1] = '\0'; /* delete trailing '/' */
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#ifdef notdef /* this is what the System V shell claims to do (it lies) */
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if (stat(p, &statb) < 0)
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statb.st_mtime = 0;
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if (statb.st_mtime > mailtime[i] && ! silent) {
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out2str(pathopt ? pathopt : "you have mail");
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out2c('\n');
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}
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mailtime[i] = statb.st_mtime;
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#else /* this is what it should do */
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if (stat(p, &statb) < 0)
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statb.st_size = 0;
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if (statb.st_size > mailsize[i] && ! silent) {
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const char *pp;
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if ((pp = pathopt) != NULL) {
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int len = 0;
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while (*pp && *pp != ':')
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len++, pp++;
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if (len == 0) {
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CHECKSTRSPACE(16, p);
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strcat(p, ": file changed");
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} else {
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while (stackblocksize() <= len)
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growstackblock();
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p = stackblock();
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memcpy(p, pathopt, len);
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p[len] = '\0';
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}
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pp = p;
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} else
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pp = "you have mail";
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out2str(pp);
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out2c('\n');
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}
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mailsize[i] = statb.st_size;
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#endif
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}
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nmboxes = i;
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popstackmark(&smark);
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}
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