NetBSD-5.0.2/usr.bin/mail/cmd1.c
/* $NetBSD: cmd1.c,v 1.29 2007/10/29 23:20:37 christos 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
#if 0
static char sccsid[] = "@(#)cmd1.c 8.2 (Berkeley) 4/20/95";
#else
__RCSID("$NetBSD: cmd1.c,v 1.29 2007/10/29 23:20:37 christos Exp $");
#endif
#endif /* not lint */
#include <assert.h>
#include "rcv.h"
#include "extern.h"
#include "format.h"
#ifdef MIME_SUPPORT
#include "mime.h"
#endif
#include "thread.h"
/*
* Mail -- a mail program
*
* User commands.
*/
static int screen;
/*
* Compute screen size.
*/
static int
screensize(void)
{
int s;
char *cp;
if ((cp = value(ENAME_SCREEN)) != NULL && (s = atoi(cp)) > 0)
return s;
return screenheight - 4;
}
/*
* Print out the header of a specific message.
* This is a slight improvement to the standard one.
*/
PUBLIC void
printhead(int mesg)
{
const char *fmtstr;
char *msgline;
fmtstr = value(ENAME_HEADER_FORMAT);
if (fmtstr == NULL)
fmtstr = DEFAULT_HEADER_FORMAT;
msgline = smsgprintf(fmtstr, get_message(mesg));
if (screenwidth > 0)
msgline[screenwidth] = '\0';
(void)printf("%s\n", msgline);
}
/*
* Print the current active headings.
* Don't change dot if invoker didn't give an argument.
*/
PUBLIC int
headers(void *v)
{
int *msgvec = v;
int n, flag;
struct message *mp;
int size;
size = screensize();
n = msgvec[0];
if (n != 0)
screen = (n - 1)/size;
if (screen < 0)
screen = 0;
if ((mp = get_message(screen * size + 1)) == NULL) {
int msgCount;
msgCount = get_msgCount();
if (screen * size + 1 > msgCount)
mp = get_message(msgCount - size + 1);
if (mp == NULL)
mp = get_message(1);
}
flag = 0;
if (dot != get_message(n))
dot = mp;
for (/*EMPTY*/; mp; mp = next_message(mp)) {
if (mp->m_flag & MDELETED)
continue;
if (flag++ >= size)
break;
printhead(get_msgnum(mp));
}
if (flag == 0) {
(void)printf("No more mail.\n");
return 1;
}
return 0;
}
/*
* Scroll to the next/previous screen
*/
PUBLIC int
scroll(void *v)
{
char *arg = v;
int s, size;
int cur[1];
cur[0] = 0;
size = screensize();
s = screen;
switch (*arg) {
case 0:
case '+':
s++;
if (s * size >= get_msgCount()) {
(void)printf("On last screenful of messages\n");
return 0;
}
screen = s;
break;
case '-':
if (--s < 0) {
(void)printf("On first screenful of messages\n");
return 0;
}
screen = s;
break;
default:
(void)printf("Unrecognized scrolling command \"%s\"\n", arg);
return 1;
}
return headers(cur);
}
/*
* Print out the headlines for each message
* in the passed message list.
*/
PUBLIC int
from(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++)
printhead(*ip);
if (--ip >= msgvec)
dot = get_message(*ip);
return 0;
}
/*
* Print out the value of dot.
*/
/*ARGSUSED*/
PUBLIC int
pdot(void *v)
{
int *msgvec;
msgvec = v;
dot = get_message(msgvec[0]);
(void)printf("%d\n", get_msgnum(dot));
return 0;
}
/*
* Print out all the possible commands.
*/
/*ARGSUSED*/
PUBLIC int
pcmdlist(void *v __unused)
{
const struct cmd *cp;
int cc;
(void)printf("Commands are:\n");
for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
cc += strlen(cp->c_name) + 2;
if (cc > 72) {
(void)printf("\n");
cc = strlen(cp->c_name) + 2;
}
if ((cp + 1)->c_name != NULL)
(void)printf("%s, ", cp->c_name);
else
(void)printf("%s\n", cp->c_name);
}
return 0;
}
PUBLIC char *
sget_msgnum(struct message *mp, struct message *parent)
{
char *p;
if (parent == NULL || parent == mp) {
(void)sasprintf(&p, "%d", mp->m_index);
return p;
}
p = sget_msgnum(mp->m_plink, parent);
(void)sasprintf(&p, "%s.%d", p, mp->m_index);
return p;
}
PUBLIC void
show_msgnum(FILE *obuf, struct message *mp, struct message *parent)
{
if (value(ENAME_QUIET) == NULL)
(void)fprintf(obuf, "Message %s:\n", sget_msgnum(mp, parent));
}
struct type1_core_args_s {
FILE *obuf;
struct message *parent;
struct ignoretab *igtab;
struct mime_info **mip;
};
static int
type1_core(struct message *mp, void *v)
{
struct type1_core_args_s *args;
args = v;
touch(mp);
show_msgnum(args->obuf, mp, args->parent);
#ifdef MIME_SUPPORT
if (args->mip == NULL)
(void)mime_sendmessage(mp, args->obuf, args->igtab, NULL, NULL);
else {
*args->mip = mime_decode_open(mp);
(void)mime_sendmessage(mp, args->obuf, args->igtab, NULL, *args->mip);
mime_decode_close(*args->mip);
}
#else
(void)sendmessage(mp, args->obuf, args->igtab, NULL, NULL);
#endif
return 0;
}
/*
* Respond to a broken pipe signal --
* probably caused by quitting more.
*/
static jmp_buf pipestop;
/*ARGSUSED*/
static void
brokpipe(int signo __unused)
{
longjmp(pipestop, 1);
}
/*
* Type out the messages requested.
*/
#ifndef MIME_SUPPORT
# define type1(a,b,c) legacy_type1(a,b)
#endif
static int
type1(int *msgvec, int doign, int mime_decode)
{
int recursive;
int *ip;
int msgCount;
/*
* Some volatile variables so longjmp will get the current not
* starting values. Note it is the variable that is volatile,
* not what it is pointing at!
*/
FILE *volatile obuf; /* avoid longjmp clobbering? */
#ifdef MIME_SUPPORT
sig_t volatile oldsigpipe; /* XXX - is volatile needed? */
struct mime_info *volatile mip; /* avoid longjmp clobbering - needed */
#endif
if ((obuf = last_registered_file(0)) == NULL)
obuf = stdout;
#ifdef MIME_SUPPORT
mip = NULL;
oldsigpipe = signal(SIGPIPE, SIG_IGN);
if (setjmp(pipestop))
goto close_pipe;
(void)signal(SIGPIPE, brokpipe);
#endif
msgCount = get_msgCount();
recursive = do_recursion();
for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
struct type1_core_args_s args;
struct message *mp;
mp = get_message(*ip);
dot = mp;
args.obuf = obuf;
args.parent = recursive ? mp : NULL;
args.igtab = doign ? ignore : 0;
#ifdef MIME_SUPPORT
args.mip = mime_decode ? __UNVOLATILE(&mip) : NULL;
#else
args.mip = NULL;
#endif
(void)thread_recursion(mp, type1_core, &args);
}
#ifdef MIME_SUPPORT
close_pipe:
if (mip != NULL) {
/*
* Ignore SIGPIPE so it can't cause a duplicate close.
*/
(void)signal(SIGPIPE, SIG_IGN);
mime_decode_close(mip);
(void)signal(SIGPIPE, oldsigpipe);
}
#endif
return 0;
}
#ifdef MIME_SUPPORT
static int
de_mime(void)
{
return value(ENAME_MIME_DECODE_MSG) != NULL;
}
/*
* Identical to type(), but with opposite mime behavior.
*/
PUBLIC int
view(void *v)
{
int *msgvec = v;
return type1(msgvec, 1, !de_mime());
}
/*
* Identical to Type(), but with opposite mime behavior.
*/
PUBLIC int
View(void *v)
{
int *msgvec = v;
return type1(msgvec, 0, !de_mime());
}
#endif /* MIME_SUPPORT */
/*
* Type out messages, honor ignored fields.
*/
PUBLIC int
type(void *v)
{
int *msgvec = v;
return type1(msgvec, 1, de_mime());
}
/*
* Type out messages, even printing ignored fields.
*/
PUBLIC int
Type(void *v)
{
int *msgvec = v;
return type1(msgvec, 0, de_mime());
}
/*
* Pipe the current message buffer to a command.
*/
PUBLIC int
pipecmd(void *v)
{
char *cmd = v;
FILE *volatile obuf; /* void longjmp clobbering - we want
the current value not start value */
if (dot == NULL) {
warn("pipcmd: no current message");
return 1;
}
obuf = stdout;
if (setjmp(pipestop))
goto close_pipe;
obuf = Popen(cmd, "w");
if (obuf == NULL) {
warn("pipecmd: Popen failed: %s", cmd);
return 1;
} else
(void)signal(SIGPIPE, brokpipe);
(void)sendmessage(dot, obuf, ignoreall, NULL, NULL);
close_pipe:
if (obuf != stdout) {
/*
* Ignore SIGPIPE so it can't cause a duplicate close.
*/
(void)signal(SIGPIPE, SIG_IGN);
(void)Pclose(obuf);
(void)signal(SIGPIPE, SIG_DFL);
}
return 0;
}
struct top_core_args_s {
int lineb;
int topl;
struct message *parent;
};
static int
top_core(struct message *mp, void *v)
{
char buffer[LINESIZE];
struct top_core_args_s *args;
FILE *ibuf;
int lines;
int c;
args = v;
touch(mp);
if (!args->lineb)
(void)printf("\n");
show_msgnum(stdout, mp, args->parent);
ibuf = setinput(mp);
c = mp->m_lines;
for (lines = 0; lines < c && lines <= args->topl; lines++) {
if (mail_readline(ibuf, buffer, sizeof(buffer)) < 0)
break;
(void)puts(buffer);
args->lineb = blankline(buffer);
}
return 0;
}
/*
* Print the top so many lines of each desired message.
* The number of lines is taken from the variable "toplines"
* and defaults to 5.
*/
PUBLIC int
top(void *v)
{
struct top_core_args_s args;
int recursive;
int msgCount;
int *msgvec = v;
int *ip;
int topl;
char *valtop;
topl = 5;
valtop = value(ENAME_TOPLINES);
if (valtop != NULL) {
topl = atoi(valtop);
if (topl < 0 || topl > 10000)
topl = 5;
}
args.topl = topl;
args.lineb = 1;
recursive = do_recursion();
msgCount = get_msgCount();
for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
struct message *mp;
mp = get_message(*ip);
dot = mp;
args.parent = recursive ? mp : NULL;
(void)thread_recursion(mp, top_core, &args);
}
return 0;
}
/*
* Touch all the given messages so that they will
* get mboxed.
*/
PUBLIC int
stouch(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++)
dot = set_m_flag(*ip, ~(MPRESERVE | MTOUCH), MTOUCH);
return 0;
}
/*
* Make sure all passed messages get mboxed.
*/
PUBLIC int
mboxit(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++)
dot = set_m_flag(*ip,
~(MPRESERVE | MTOUCH | MBOX), MTOUCH | MBOX);
return 0;
}
/*
* List the folders the user currently has.
*/
/*ARGSUSED*/
PUBLIC int
folders(void *v __unused)
{
char dirname[PATHSIZE];
const char *cmd;
if (getfold(dirname, sizeof(dirname)) < 0) {
(void)printf("No value set for \"folder\"\n");
return 1;
}
if ((cmd = value(ENAME_LISTER)) == NULL)
cmd = "ls";
(void)run_command(cmd, 0, -1, -1, dirname, NULL);
return 0;
}
/*
* Update the mail file with any new messages that have
* come in since we started reading mail.
*/
/*ARGSUSED*/
PUBLIC int
inc(void *v __unused)
{
int nmsg, mdot;
nmsg = incfile();
if (nmsg == 0) {
(void)printf("No new mail.\n");
} else if (nmsg > 0) {
struct message *mp;
mdot = newfileinfo(get_abs_msgCount() - nmsg);
if ((mp = get_message(mdot)) != NULL)
dot = mp;
} else {
(void)printf("\"inc\" command failed...\n");
}
return 0;
}