470 lines
11 KiB
C
470 lines
11 KiB
C
/* $NetBSD: main.c,v 1.29 2008/07/21 14:19:24 lukem 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 <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
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The Regents of the University of California. All rights reserved.");
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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 1.29 2008/07/21 14:19:24 lukem 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 <assert.h>
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#include <util.h>
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#include "extern.h"
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#ifdef USE_EDITLINE
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#include "complete.h"
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#endif
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#include "format.h"
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#ifdef MIME_SUPPORT
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#include "mime.h"
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#endif
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#ifdef THREAD_SUPPORT
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#include "thread.h"
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#endif
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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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static jmp_buf hdrjmp;
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/*
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* Interrupt printing of the headers.
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*/
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/*ARGSUSED*/
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static void
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hdrstop(int signo __unused)
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{
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(void)fflush(stdout);
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(void)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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PUBLIC 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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char *cp;
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if (ioctl(1, TIOCGWINSZ, &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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* Possible overrides from the rcfile.
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*/
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if ((cp = value(ENAME_SCREENWIDTH)) != NULL) {
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int width;
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width = *cp ? atoi(cp) : 0;
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if (width >= 0)
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screenwidth = width;
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}
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if ((cp = value(ENAME_SCREENHEIGHT)) != NULL) {
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int height;
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height = *cp ? atoi(cp) : 0;
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if (height >= 0) {
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realscreenheight = height;
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screenheight = height;
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}
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}
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}
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/*
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* Break up a white-space or comma delimited name list so that aliases
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* can get expanded. Without this, the CC: or BCC: list is broken too
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* late for alias expansion to occur.
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*/
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PUBLIC struct name *
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lexpand(char *str, int ntype)
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{
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char *list;
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struct name *np = NULL;
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char *word, *p;
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list = estrdup(str);
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word = list;
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for (word = list; *word; word = p) {
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word = skip_WSP(word);
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for (p = word;
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*p && !is_WSP(*p) && *p != ',';
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p++)
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continue;
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if (*p)
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*p++ = '\0';
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np = cat(np, nalloc(word, ntype));
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}
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free(list);
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return np;
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}
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PUBLIC 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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#ifdef MIME_SUPPORT
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struct name *attach_optargs;
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struct name *attach_end;
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#endif
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char *subject;
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const char *ef;
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char nosrc = 0;
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sig_t prevint;
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const char *rc;
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int volatile Hflag;
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/*
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* For portability, call setprogname() early, before
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* getprogname() is called.
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*/
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(void)setprogname(argv[0]);
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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(ENAME_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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Hflag = 0;
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#ifdef MIME_SUPPORT
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attach_optargs = NULL;
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attach_end = NULL;
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while ((i = getopt(argc, argv, ":~EH:INT:a:b:c:dfins:u:v")) != -1)
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#else
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while ((i = getopt(argc, argv, ":~EH:INT:b:c:dfins:u:v")) != -1)
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#endif
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{
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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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(void)close(i);
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break;
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#ifdef MIME_SUPPORT
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case 'a': {
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struct name *np;
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np = nalloc(optarg, 0);
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if (attach_end == NULL)
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attach_optargs = np;
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else {
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np->n_blink = attach_end;
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attach_end->n_flink = np;
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}
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attach_end = np;
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break;
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}
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#endif
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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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(void)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(ENAME_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 'H':
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/*
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* Print out the headers and quit.
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*/
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Hflag = get_Hflag(argv);
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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(ENAME_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(ENAME_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(ENAME_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, lexpand(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, lexpand(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(ENAME_DONTSENDEMPTY, "");
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break;
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case ':':
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/*
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* An optarg was expected but not found.
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*/
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if (optopt == 'H') {
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Hflag = get_Hflag(NULL);
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break;
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}
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(void)fprintf(stderr,
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"%s: option requires an argument -- %c\n",
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getprogname(), optopt);
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/* FALLTHROUGH */
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case '?':
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/*
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* An unknown option flag. We need to do the
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* error message.
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*/
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if (optopt != '?')
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(void)fprintf(stderr,
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"%s: unknown option -- %c\n", getprogname(),
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optopt);
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#ifdef MIME_SUPPORT
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(void)fputs("\
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Usage: mail [-EiInv] [-s subject] [-a file] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
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[- sendmail-options ...]\n\
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mail [-EiInNv] [-H[colon-modifier]] -f [name]\n\
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mail [-EiInNv] [-H[colon-modifier]] [-u user]\n",
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stderr);
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#else /* MIME_SUPPORT */
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(void)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] [-H[colon-modifier]] -f [name]\n\
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mail [-EiInNv] [-H[colon-modifier]] [-u user]\n",
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stderr);
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#endif /* MIME_SUPPORT */
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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 (/*EMPTY*/; argv[i]; i++)
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smopts = cat(smopts, nalloc(argv[i], GSMOPTS));
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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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errx(1, "You must specify direct recipients with -s, -c, or -b.");
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if (ef != NULL && to != NULL) {
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errx(1, "Cannot give -f and people to send to.");
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}
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if (Hflag != 0 && to != NULL)
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errx(EXIT_FAILURE, "Cannot give -H and people to send to.");
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#ifdef MIME_SUPPORT
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if (attach_optargs != NULL && to == NULL)
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errx(EXIT_FAILURE, "Cannot give -a without people to send to.");
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#endif
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tinit(); /* must be done before loading the rcfile */
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input = stdin;
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mailmode = Hflag ? mm_hdrsonly :
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to ? mm_sending : mm_receiving;
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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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setscreensize(); /* do this after loading the rcfile */
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#ifdef USE_EDITLINE
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/*
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* This is after loading the MAILRC so we can use value().
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* Avoid editline in mm_hdrsonly mode or pipelines will screw
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* up. XXX - there must be a better way!
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*/
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if (mailmode != mm_hdrsonly)
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init_editline();
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#endif
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switch (mailmode) {
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case mm_sending:
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(void)mail(to, cc, bcc, smopts, subject,
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mime_attach_optargs(attach_optargs));
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/*
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* why wait?
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*/
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exit(senderr);
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break; /* XXX - keep lint happy */
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case mm_receiving:
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case mm_hdrsonly:
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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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(void)signal(SIGINT, hdrstop);
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if (value(ENAME_QUIET) == NULL)
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(void)printf("Mail version %s. Type ? for help.\n",
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version);
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if (mailmode == mm_hdrsonly)
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show_headers_and_exit(Hflag); /* NORETURN */
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announce();
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(void)fflush(stdout);
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(void)signal(SIGINT, prevint);
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}
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commands();
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(void)signal(SIGHUP, SIG_IGN);
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(void)signal(SIGINT, SIG_IGN);
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(void)signal(SIGQUIT, SIG_IGN);
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quit();
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break;
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default:
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assert(/*CONSTCOND*/0);
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break;
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}
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return 0;
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}
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