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Commit	Line	Data
	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	* @(#)mail.c 8.2 (Berkeley) 5/4/95
	33	* $FreeBSD: head/bin/sh/mail.c 213760 2010-10-13 04:01:01Z obrien $
	34	*/
	35
	36	/*
	37	* Routines to check for mail. (Perhaps make part of main.c?)
	38	*/
	39
	40	#include "shell.h"
	41	#include "exec.h" /* defines padvance() */
	42	#include "mail.h"
	43	#include "var.h"
	44	#include "output.h"
	45	#include "memalloc.h"
	46	#include "error.h"
	47	#include <sys/types.h>
	48	#include <sys/stat.h>
	49	#include <stdlib.h>
	50
	51
	52	#define MAXMBOXES 10
	53
	54
	55	static int nmboxes; /* number of mailboxes */
	56	static time_t mailtime[MAXMBOXES]; /* times of mailboxes */
	57
	58
	59
	60	/*
	61	* Print appropriate message(s) if mail has arrived. If the argument is
	62	* nozero, then the value of MAIL has changed, so we just update the
	63	* values.
	64	*/
	65
	66	void
	67	chkmail(int silent)
	68	{
	69	int i;
	70	const char *mpath;
	71	char *p;
	72	char *q;
	73	struct stackmark smark;
	74	struct stat statb;
	75
	76	if (silent)
	77	nmboxes = 10;
	78	if (nmboxes == 0)
	79	return;
	80	setstackmark(&smark);
	81	mpath = mpathset()? mpathval() : mailval();
	82	for (i = 0 ; i < nmboxes ; i++) {
	83	p = padvance(&mpath, nullstr);
	84	if (p == NULL)
	85	break;
	86	if (*p == '\0')
	87	continue;
	88	for (q = p ; *q ; q++);
	89	if (q[-1] != '/')
	90	abort();
	91	q[-1] = '\0'; /* delete trailing '/' */
	92	#ifdef notdef /* this is what the System V shell claims to do (it lies) */
	93	if (stat(p, &statb) < 0)
	94	statb.st_mtime = 0;
	95	if (statb.st_mtime > mailtime[i] && ! silent) {
	96	out2str(pathopt? pathopt : "you have mail");
	97	out2c('\n');
	98	}
	99	mailtime[i] = statb.st_mtime;
	100	#else /* this is what it should do */
	101	if (stat(p, &statb) < 0)
	102	statb.st_size = 0;
	103	if (statb.st_size > mailtime[i] && ! silent) {
	104	out2str(pathopt? pathopt : "you have mail");
	105	out2c('\n');
	106	}
	107	mailtime[i] = statb.st_size;
	108	#endif
	109	}
	110	nmboxes = i;
	111	popstackmark(&smark);
	112	}