316 lines
7.5 KiB
C
316 lines
7.5 KiB
C
/* $NetBSD: main.c,v 1.17 2002/03/05 21:29:30 wiz 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95";
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#else
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__RCSID("$NetBSD: main.c,v 1.17 2002/03/05 21:29:30 wiz Exp $");
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#endif
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#endif /* not lint */
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#define EXTERN
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#include "rcv.h"
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#undef EXTERN
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#include "extern.h"
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extern char *version;
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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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jmp_buf hdrjmp;
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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 *subject;
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char *ef;
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char nosrc = 0;
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sig_t prevint;
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char *rc;
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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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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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subject = NULL;
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while ((i = getopt(argc, argv, "~EINT:b:c:dfins:u:v")) != -1) {
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switch (i) {
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case 'T':
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/*
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* Next argument is temp file to write which
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* articles have been read/deleted for netnews.
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*/
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Tflag = optarg;
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if ((i = creat(Tflag, 0600)) < 0) {
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warn("%s", Tflag);
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exit(1);
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}
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close(i);
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break;
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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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myname = optarg;
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unsetenv("MAIL");
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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 '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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* If no argument is given after -f, we read his
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* mbox file.
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*
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* getopt() can't handle optional arguments, so here
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* is an ugly hack to get around it.
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*/
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if ((argv[optind]) && (argv[optind][0] != '-'))
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ef = argv[optind++];
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else
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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++;
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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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case '~':
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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 empty files.
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*/
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assign("dontsendempty", "");
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break;
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case '?':
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fputs("\
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Usage: mail [-EiInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
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[- sendmail-options ...]\n\
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mail [-EiInNv] -f [name]\n\
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mail [-EiInNv] [-u user]\n",
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stderr);
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exit(1);
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}
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}
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for (i = optind; (argv[i]) && (*argv[i] != '-'); i++)
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to = cat(to, nalloc(argv[i], GTO));
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for (; argv[i]; i++)
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smopts = cat(smopts, nalloc(argv[i], 0));
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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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fputs("You must specify direct recipients with -s, -c, or -b.\n", stderr);
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exit(1);
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}
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if (ef != NULL && to != NULL) {
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fprintf(stderr, "Cannot give -f and people to send to.\n");
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exit(1);
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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, 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 (setjmp(hdrjmp) == 0) {
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if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
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signal(SIGINT, hdrstop);
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if (value("quiet") == NULL)
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printf("Mail version %s. Type ? for help.\n",
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version);
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announce();
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fflush(stdout);
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signal(SIGINT, prevint);
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}
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commands();
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signal(SIGHUP, SIG_IGN);
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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quit();
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exit(0);
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}
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/*
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* Interrupt printing of the headers.
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*/
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void
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hdrstop(int signo)
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{
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fflush(stdout);
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fprintf(stderr, "\nInterrupt\n");
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longjmp(hdrjmp, 1);
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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 < 1200)
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screenheight = 9;
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else if (ospeed == 1200)
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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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