GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/mail/main.c Lines: 0 107 0.0 %
Date: 2016-12-06 Branches: 0 60 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: main.c,v 1.33 2015/11/24 00:08:27 deraadt Exp $	*/
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/*	$NetBSD: main.c,v 1.7 1997/05/13 06:15:57 mikel Exp $	*/
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/*
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 * Copyright (c) 1980, 1993
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 *	The Regents of the University of California.  All rights reserved.
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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 "rcv.h"
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "extern.h"
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__dead	void	usage(void);
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	int	main(int, char **);
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/*
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 * Mail -- a mail program
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 *
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 * Startup -- interface with user.
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 */
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int
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main(int argc, char **argv)
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{
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	int i;
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	struct name *to, *cc, *bcc, *smopts;
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	char *fromaddr;
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	char *subject;
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	char *ef;
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	char nosrc = 0;
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	char *rc;
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	extern const char version[];
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	if (pledge("stdio rpath wpath cpath getpw tmppath fattr tty flock proc exec",
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	    NULL) == -1)
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		err(1, "pledge");
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	/*
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	 * Set up a reasonable environment.
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	 * Figure out whether we are being run interactively,
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	 * start the SIGCHLD catcher, and so forth.
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	 */
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	(void)signal(SIGCHLD, sigchild);
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	(void)signal(SIGPIPE, SIG_IGN);
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	if (isatty(0))
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		assign("interactive", "");
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	image = -1;
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	/*
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	 * Now, determine how we are being used.
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	 * We successively pick off - flags.
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	 * If there is anything left, it is the base of the list
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	 * of users to mail to.  Argp will be set to point to the
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	 * first of these users.
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	 */
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	ef = NULL;
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	to = NULL;
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	cc = NULL;
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	bcc = NULL;
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	smopts = NULL;
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	fromaddr = NULL;
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	subject = NULL;
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	while ((i = getopt(argc, argv, "EINb:c:dfinr:s:u:v")) != -1) {
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		switch (i) {
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		case 'u':
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			/*
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			 * Next argument is person to pretend to be.
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			 */
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			if (strlen(optarg) >= LOGIN_NAME_MAX)
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				errx(1, "username `%s' too long", optarg);
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			unsetenv("MAIL");
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			myname = optarg;
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			uflag = 1;
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			break;
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		case 'i':
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			/*
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			 * User wants to ignore interrupts.
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			 * Set the variable "ignore"
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			 */
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			assign("ignore", "");
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			break;
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		case 'd':
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			debug++;
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			break;
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		case 'r':
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			/*
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			 * Set From: address
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			 */
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			fromaddr = optarg;
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			break;
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		case 's':
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			/*
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			 * Give a subject field for sending from
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			 * non terminal
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			 */
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			subject = optarg;
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			break;
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		case 'f':
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			/*
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			 * User is specifying file to "edit" with Mail,
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			 * as opposed to reading system mailbox.
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			 * We read his mbox file unless another file
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			 * is specified after the arguments.
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			 */
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			ef = "&";
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			break;
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		case 'n':
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			/*
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			 * User doesn't want to source /usr/lib/Mail.rc
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			 */
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			nosrc = 1;
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			break;
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		case 'N':
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			/*
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			 * Avoid initial header printing.
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			 */
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			assign("noheader", "");
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			break;
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		case 'v':
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			/*
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			 * Send mailer verbose flag
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			 */
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			assign("verbose", "");
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			break;
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		case 'I':
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			/*
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			 * We're interactive
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			 */
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			assign("interactive", "");
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			break;
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		case 'c':
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			/*
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			 * Get Carbon Copy Recipient list
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			 */
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			cc = cat(cc, nalloc(optarg, GCC));
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			break;
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		case 'b':
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			/*
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			 * Get Blind Carbon Copy Recipient list
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			 */
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			bcc = cat(bcc, nalloc(optarg, GBCC));
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			break;
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		case 'E':
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			/*
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			 * Don't send messages with an empty body.
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			 */
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			assign("skipempty", "");
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			break;
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		default:
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			usage();
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			/*NOTREACHED*/
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		}
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	}
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	if (ef != NULL) {
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		/* Check for optional mailbox file name. */
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		if (optind < argc) {
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			ef = argv[optind++];
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			if (optind < argc)
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			    errx(1, "Cannot give -f and people to send to");
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		}
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	} else {
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		for (i = optind; argv[i]; i++)
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			to = cat(to, nalloc(argv[i], GTO));
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	}
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	/*
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	 * Check for inconsistent arguments.
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	 */
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	if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL ||
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	    fromaddr != NULL))
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		errx(1, "You must specify direct recipients with -s, -c, -b, "
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		    "or -r");
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	/*
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	 * Block SIGINT except where we install an explicit handler for it.
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	 */
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	sigemptyset(&intset);
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	sigaddset(&intset, SIGINT);
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	(void)sigprocmask(SIG_BLOCK, &intset, NULL);
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	/*
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	 * Initialization.
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	 */
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	tinit();
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	setscreensize();
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	input = stdin;
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	rcvmode = !to;
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	spreserve();
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	if (!nosrc)
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		load(_PATH_MASTER_RC);
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	/*
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	 * Expand returns a savestr, but load only uses the file name
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	 * for fopen, so it's safe to do this.
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	 */
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	if ((rc = getenv("MAILRC")) == 0)
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		rc = "~/.mailrc";
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	load(expand(rc));
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	if (!rcvmode) {
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		mail(to, cc, bcc, smopts, fromaddr, subject);
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		/*
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		 * why wait?
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		 */
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		exit(senderr);
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	}
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	/*
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	 * Ok, we are reading mail.
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	 * Decide whether we are editing a mailbox or reading
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	 * the system mailbox, and open up the right stuff.
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	 */
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	if (ef == NULL)
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		ef = "%";
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	if (setfile(ef) < 0)
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		exit(1);		/* error already reported */
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	if (value("quiet") == NULL)
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		(void)printf("Mail version %s.  Type ? for help.\n",
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			version);
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	announce();
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	(void)fflush(stdout);
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	commands();
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	(void)ignoresig(SIGHUP, NULL, NULL);
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	(void)ignoresig(SIGINT, NULL, NULL);
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	(void)ignoresig(SIGQUIT, NULL, NULL);
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	quit();
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	exit(0);
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}
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/*
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 * Compute what the screen size for printing headers should be.
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 * We use the following algorithm for the height:
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 *	If baud rate < 1200, use  9
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 *	If baud rate = 1200, use 14
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 *	If baud rate > 1200, use 24 or ws_row
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 * Width is either 80 or ws_col;
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 */
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void
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setscreensize(void)
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{
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	struct termios tbuf;
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	struct winsize ws;
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	speed_t ospeed;
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	if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0)
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		ws.ws_col = ws.ws_row = 0;
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	if (tcgetattr(1, &tbuf) < 0)
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		ospeed = 9600;
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	else
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		ospeed = cfgetospeed(&tbuf);
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	if (ospeed < B1200)
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		screenheight = 9;
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	else if (ospeed == B1200)
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		screenheight = 14;
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	else if (ws.ws_row != 0)
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		screenheight = ws.ws_row;
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	else
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		screenheight = 24;
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	if ((realscreenheight = ws.ws_row) == 0)
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		realscreenheight = 24;
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	if ((screenwidth = ws.ws_col) == 0)
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		screenwidth = 80;
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}
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__dead void
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usage(void)
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{
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	fprintf(stderr, "usage: %s [-dEIinv] [-b list] [-c list] "
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	    "[-r from-addr] [-s subject] to-addr ...\n", __progname);
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	fprintf(stderr, "       %s [-dEIiNnv] -f [file]\n", __progname);
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	fprintf(stderr, "       %s [-dEIiNnv] [-u user]\n", __progname);
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	exit(1);
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}