4.3BSD-Reno/src/usr.bin/mail/main.c
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)main.c 5.27 (Berkeley) 6/25/90";
#endif /* not lint */
#include "rcv.h"
#include <sys/stat.h>
/*
* Mail -- a mail program
*
* Startup -- interface with user.
*/
jmp_buf hdrjmp;
main(argc, argv)
char **argv;
{
register int i;
struct name *to, *cc, *bcc, *smopts;
char *subject;
char *ef;
char nosrc = 0;
int hdrstop();
sig_t prevint;
int sigchild();
extern int getopt(), optind, opterr;
extern char *optarg;
/*
* Set up a reasonable environment.
* Figure out whether we are being run interactively,
* start the SIGCHLD catcher, and so forth.
*/
(void) signal(SIGCHLD, sigchild);
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 = NOSTR;
to = NIL;
cc = NIL;
bcc = NIL;
smopts = NIL;
subject = NOSTR;
while ((i = getopt(argc, argv, "INT:b:c:dfins:u:v")) != EOF) {
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) {
perror(Tflag);
exit(1);
}
close(i);
break;
case 'u':
/*
* Next argument is person to pretend to be.
*/
myname = optarg;
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 '?':
fputs("\
Usage: mail [-iInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
[- sendmail-options ...]\n\
mail [-iInNv] -f [name]\n\
mail [-iInNv] [-u user]\n",
stderr);
exit(1);
}
}
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 == NIL && (subject != NOSTR || cc != NIL || bcc != NIL)) {
fputs("You must specify direct recipients with -s, -c, or -b.\n", stderr);
exit(1);
}
if (ef != NOSTR && to != NIL) {
fprintf(stderr, "Cannot give -f and people to send to.\n");
exit(1);
}
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.
*/
load(expand("~/.mailrc"));
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 == NOSTR)
ef = "%";
if (setfile(ef) < 0)
exit(1); /* error already reported */
if (setjmp(hdrjmp) == 0) {
extern char *version;
if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
signal(SIGINT, hdrstop);
if (value("quiet") == NOSTR)
printf("Mail version %s. Type ? for help.\n",
version);
announce();
fflush(stdout);
signal(SIGINT, prevint);
}
commands();
signal(SIGHUP, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
quit();
exit(0);
}
/*
* Interrupt printing of the headers.
*/
hdrstop()
{
fflush(stdout);
fprintf(stderr, "\nInterrupt\n");
longjmp(hdrjmp, 1);
}
/*
* 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;
*/
setscreensize()
{
struct sgttyb tbuf;
struct winsize ws;
if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0)
ws.ws_col = ws.ws_row = 0;
if (ioctl(1, TIOCGETP, &tbuf) < 0)
tbuf.sg_ospeed = B9600;
if (tbuf.sg_ospeed < B1200)
screenheight = 9;
else if (tbuf.sg_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;
}