OpenBSD-4.6/usr.bin/mail/main.c
/* $OpenBSD: main.c,v 1.22 2008/10/09 06:48:11 jmc Exp $ */
/* $NetBSD: main.c,v 1.7 1997/05/13 06:15:57 mikel Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static const char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95";
#else
static const char rcsid[] = "$OpenBSD: main.c,v 1.22 2008/10/09 06:48:11 jmc Exp $";
#endif
#endif /* not lint */
#include "rcv.h"
#include <fcntl.h>
#include <sys/ioctl.h>
#include "extern.h"
__dead void usage(void);
int main(int, char **);
/*
* Mail -- a mail program
*
* Startup -- interface with user.
*/
int
main(int argc, char **argv)
{
int i;
struct name *to, *cc, *bcc, *smopts;
char *subject;
char *ef;
char nosrc = 0;
char *rc;
extern const char version[];
/*
* Set up a reasonable environment.
* Figure out whether we are being run interactively,
* start the SIGCHLD catcher, and so forth.
*/
(void)signal(SIGCHLD, sigchild);
(void)signal(SIGPIPE, SIG_IGN);
if (isatty(0))
assign("interactive", "");
image = -1;
/*
* Now, determine how we are being used.
* We successively pick off - flags.
* If there is anything left, it is the base of the list
* of users to mail to. Argp will be set to point to the
* first of these users.
*/
ef = NULL;
to = NULL;
cc = NULL;
bcc = NULL;
smopts = NULL;
subject = NULL;
while ((i = getopt(argc, argv, "EINT:b:c:dfins:u:v")) != -1) {
switch (i) {
case 'T':
/*
* Next argument is temp file to write which
* articles have been read/deleted for netnews.
*/
Tflag = optarg;
if ((i = creat(Tflag, 0600)) < 0)
err(1, "%s", Tflag);
(void)close(i);
break;
case 'u':
/*
* Next argument is person to pretend to be.
*/
if (strlen(optarg) >= MAXLOGNAME)
errx(1, "username `%s' too long", optarg);
unsetenv("MAIL");
myname = optarg;
uflag = 1;
break;
case 'i':
/*
* User wants to ignore interrupts.
* Set the variable "ignore"
*/
assign("ignore", "");
break;
case 'd':
debug++;
break;
case 's':
/*
* Give a subject field for sending from
* non terminal
*/
subject = optarg;
break;
case 'f':
/*
* User is specifying file to "edit" with Mail,
* as opposed to reading system mailbox.
* If no argument is given after -f, we read his
* mbox file.
*
* getopt() can't handle optional arguments, so here
* is an ugly hack to get around it.
*/
if ((argv[optind]) && (argv[optind][0] != '-'))
ef = argv[optind++];
else
ef = "&";
break;
case 'n':
/*
* User doesn't want to source /usr/lib/Mail.rc
*/
nosrc++;
break;
case 'N':
/*
* Avoid initial header printing.
*/
assign("noheader", "");
break;
case 'v':
/*
* Send mailer verbose flag
*/
assign("verbose", "");
break;
case 'I':
/*
* We're interactive
*/
assign("interactive", "");
break;
case 'c':
/*
* Get Carbon Copy Recipient list
*/
cc = cat(cc, nalloc(optarg, GCC));
break;
case 'b':
/*
* Get Blind Carbon Copy Recipient list
*/
bcc = cat(bcc, nalloc(optarg, GBCC));
break;
case 'E':
/*
* Don't send messages with an empty body.
*/
assign("skipempty", "");
break;
default:
usage();
/*NOTREACHED*/
}
}
for (i = optind; (argv[i]) && (*argv[i] != '-'); i++)
to = cat(to, nalloc(argv[i], GTO));
for (; argv[i]; i++)
smopts = cat(smopts, nalloc(argv[i], 0));
/*
* Check for inconsistent arguments.
*/
if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL))
errx(1, "You must specify direct recipients with -s, -c, or -b");
if (ef != NULL && to != NULL)
errx(1, "Cannot give -f and people to send to");
/*
* Block SIGINT except where we install an explicit handler for it.
*/
sigemptyset(&intset);
sigaddset(&intset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &intset, NULL);
/*
* Initialization.
*/
tinit();
setscreensize();
input = stdin;
rcvmode = !to;
spreserve();
if (!nosrc)
load(_PATH_MASTER_RC);
/*
* Expand returns a savestr, but load only uses the file name
* for fopen, so it's safe to do this.
*/
if ((rc = getenv("MAILRC")) == 0)
rc = "~/.mailrc";
load(expand(rc));
if (!rcvmode) {
mail(to, cc, bcc, smopts, subject);
/*
* why wait?
*/
exit(senderr);
}
/*
* Ok, we are reading mail.
* Decide whether we are editing a mailbox or reading
* the system mailbox, and open up the right stuff.
*/
if (ef == NULL)
ef = "%";
if (setfile(ef) < 0)
exit(1); /* error already reported */
if (value("quiet") == NULL)
(void)printf("Mail version %s. Type ? for help.\n",
version);
announce();
(void)fflush(stdout);
commands();
(void)ignoresig(SIGHUP, NULL, NULL);
(void)ignoresig(SIGINT, NULL, NULL);
(void)ignoresig(SIGQUIT, NULL, NULL);
quit();
exit(0);
}
/*
* Compute what the screen size for printing headers should be.
* We use the following algorithm for the height:
* If baud rate < 1200, use 9
* If baud rate = 1200, use 14
* If baud rate > 1200, use 24 or ws_row
* Width is either 80 or ws_col;
*/
void
setscreensize(void)
{
struct termios tbuf;
struct winsize ws;
speed_t ospeed;
if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0)
ws.ws_col = ws.ws_row = 0;
if (tcgetattr(1, &tbuf) < 0)
ospeed = 9600;
else
ospeed = cfgetospeed(&tbuf);
if (ospeed < B1200)
screenheight = 9;
else if (ospeed == B1200)
screenheight = 14;
else if (ws.ws_row != 0)
screenheight = ws.ws_row;
else
screenheight = 24;
if ((realscreenheight = ws.ws_row) == 0)
realscreenheight = 24;
if ((screenwidth = ws.ws_col) == 0)
screenwidth = 80;
}
__dead void
usage(void)
{
fprintf(stderr, "usage: %s [-dEIinv] [-b list] [-c list] "
"[-s subject] to-addr ...\n", __progname);
fprintf(stderr, " %*s [-sendmail-options ...]\n",
(int)strlen(__progname), "");
fprintf(stderr, " %s [-dEIiNnv] -f [file]\n", __progname);
fprintf(stderr, " %s [-dEIiNnv] [-u user]\n", __progname);
exit(1);
}