NetBSD-5.0.2/usr.bin/mail/main.c
/* $NetBSD: main.c,v 1.29 2008/07/21 14:19:24 lukem 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95";
#else
__RCSID("$NetBSD: main.c,v 1.29 2008/07/21 14:19:24 lukem Exp $");
#endif
#endif /* not lint */
#define EXTERN
#include "rcv.h"
#undef EXTERN
#include <assert.h>
#include <util.h>
#include "extern.h"
#ifdef USE_EDITLINE
#include "complete.h"
#endif
#include "format.h"
#ifdef MIME_SUPPORT
#include "mime.h"
#endif
#ifdef THREAD_SUPPORT
#include "thread.h"
#endif
/*
* Mail -- a mail program
*
* Startup -- interface with user.
*/
static jmp_buf hdrjmp;
/*
* Interrupt printing of the headers.
*/
/*ARGSUSED*/
static void
hdrstop(int signo __unused)
{
(void)fflush(stdout);
(void)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;
*/
PUBLIC void
setscreensize(void)
{
struct termios tbuf;
struct winsize ws;
speed_t ospeed;
char *cp;
if (ioctl(1, TIOCGWINSZ, &ws) < 0)
ws.ws_col = ws.ws_row = 0;
if (tcgetattr(1, &tbuf) < 0)
ospeed = 9600;
else
ospeed = cfgetospeed(&tbuf);
if (ospeed < 1200)
screenheight = 9;
else if (ospeed == 1200)
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;
/*
* Possible overrides from the rcfile.
*/
if ((cp = value(ENAME_SCREENWIDTH)) != NULL) {
int width;
width = *cp ? atoi(cp) : 0;
if (width >= 0)
screenwidth = width;
}
if ((cp = value(ENAME_SCREENHEIGHT)) != NULL) {
int height;
height = *cp ? atoi(cp) : 0;
if (height >= 0) {
realscreenheight = height;
screenheight = height;
}
}
}
/*
* Break up a white-space or comma delimited name list so that aliases
* can get expanded. Without this, the CC: or BCC: list is broken too
* late for alias expansion to occur.
*/
PUBLIC struct name *
lexpand(char *str, int ntype)
{
char *list;
struct name *np = NULL;
char *word, *p;
list = estrdup(str);
word = list;
for (word = list; *word; word = p) {
word = skip_WSP(word);
for (p = word;
*p && !is_WSP(*p) && *p != ',';
p++)
continue;
if (*p)
*p++ = '\0';
np = cat(np, nalloc(word, ntype));
}
free(list);
return np;
}
PUBLIC int
main(int argc, char *argv[])
{
int i;
struct name *to, *cc, *bcc, *smopts;
#ifdef MIME_SUPPORT
struct name *attach_optargs;
struct name *attach_end;
#endif
char *subject;
const char *ef;
char nosrc = 0;
sig_t prevint;
const char *rc;
int volatile Hflag;
/*
* For portability, call setprogname() early, before
* getprogname() is called.
*/
(void)setprogname(argv[0]);
/*
* 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(ENAME_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;
Hflag = 0;
#ifdef MIME_SUPPORT
attach_optargs = NULL;
attach_end = NULL;
while ((i = getopt(argc, argv, ":~EH:INT:a:b:c:dfins:u:v")) != -1)
#else
while ((i = getopt(argc, argv, ":~EH:INT:b:c:dfins:u:v")) != -1)
#endif
{
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) {
warn("%s", Tflag);
exit(1);
}
(void)close(i);
break;
#ifdef MIME_SUPPORT
case 'a': {
struct name *np;
np = nalloc(optarg, 0);
if (attach_end == NULL)
attach_optargs = np;
else {
np->n_blink = attach_end;
attach_end->n_flink = np;
}
attach_end = np;
break;
}
#endif
case 'u':
/*
* Next argument is person to pretend to be.
*/
myname = optarg;
(void)unsetenv("MAIL");
break;
case 'i':
/*
* User wants to ignore interrupts.
* Set the variable "ignore"
*/
assign(ENAME_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 'H':
/*
* Print out the headers and quit.
*/
Hflag = get_Hflag(argv);
break;
case 'n':
/*
* User doesn't want to source /usr/lib/Mail.rc
*/
nosrc++;
break;
case 'N':
/*
* Avoid initial header printing.
*/
assign(ENAME_NOHEADER, "");
break;
case 'v':
/*
* Send mailer verbose flag
*/
assign(ENAME_VERBOSE, "");
break;
case 'I':
case '~':
/*
* We're interactive
*/
assign(ENAME_INTERACTIVE, "");
break;
case 'c':
/*
* Get Carbon Copy Recipient list
*/
cc = cat(cc, lexpand(optarg, GCC));
break;
case 'b':
/*
* Get Blind Carbon Copy Recipient list
*/
bcc = cat(bcc, lexpand(optarg, GBCC));
break;
case 'E':
/*
* Don't send empty files.
*/
assign(ENAME_DONTSENDEMPTY, "");
break;
case ':':
/*
* An optarg was expected but not found.
*/
if (optopt == 'H') {
Hflag = get_Hflag(NULL);
break;
}
(void)fprintf(stderr,
"%s: option requires an argument -- %c\n",
getprogname(), optopt);
/* FALLTHROUGH */
case '?':
/*
* An unknown option flag. We need to do the
* error message.
*/
if (optopt != '?')
(void)fprintf(stderr,
"%s: unknown option -- %c\n", getprogname(),
optopt);
#ifdef MIME_SUPPORT
(void)fputs("\
Usage: mail [-EiInv] [-s subject] [-a file] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
[- sendmail-options ...]\n\
mail [-EiInNv] [-H[colon-modifier]] -f [name]\n\
mail [-EiInNv] [-H[colon-modifier]] [-u user]\n",
stderr);
#else /* MIME_SUPPORT */
(void)fputs("\
Usage: mail [-EiInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
[- sendmail-options ...]\n\
mail [-EiInNv] [-H[colon-modifier]] -f [name]\n\
mail [-EiInNv] [-H[colon-modifier]] [-u user]\n",
stderr);
#endif /* MIME_SUPPORT */
exit(1);
}
}
for (i = optind; (argv[i]) && (*argv[i] != '-'); i++)
to = cat(to, nalloc(argv[i], GTO));
for (/*EMPTY*/; argv[i]; i++)
smopts = cat(smopts, nalloc(argv[i], GSMOPTS));
/*
* 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.");
}
if (Hflag != 0 && to != NULL)
errx(EXIT_FAILURE, "Cannot give -H and people to send to.");
#ifdef MIME_SUPPORT
if (attach_optargs != NULL && to == NULL)
errx(EXIT_FAILURE, "Cannot give -a without people to send to.");
#endif
tinit(); /* must be done before loading the rcfile */
input = stdin;
mailmode = Hflag ? mm_hdrsonly :
to ? mm_sending : mm_receiving;
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));
setscreensize(); /* do this after loading the rcfile */
#ifdef USE_EDITLINE
/*
* This is after loading the MAILRC so we can use value().
* Avoid editline in mm_hdrsonly mode or pipelines will screw
* up. XXX - there must be a better way!
*/
if (mailmode != mm_hdrsonly)
init_editline();
#endif
switch (mailmode) {
case mm_sending:
(void)mail(to, cc, bcc, smopts, subject,
mime_attach_optargs(attach_optargs));
/*
* why wait?
*/
exit(senderr);
break; /* XXX - keep lint happy */
case mm_receiving:
case mm_hdrsonly:
/*
* 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 (setjmp(hdrjmp) == 0) {
if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
(void)signal(SIGINT, hdrstop);
if (value(ENAME_QUIET) == NULL)
(void)printf("Mail version %s. Type ? for help.\n",
version);
if (mailmode == mm_hdrsonly)
show_headers_and_exit(Hflag); /* NORETURN */
announce();
(void)fflush(stdout);
(void)signal(SIGINT, prevint);
}
commands();
(void)signal(SIGHUP, SIG_IGN);
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
quit();
break;
default:
assert(/*CONSTCOND*/0);
break;
}
return 0;
}