OpenBSD-4.6/usr.bin/mail/cmd1.c
/* $OpenBSD: cmd1.c,v 1.27 2008/07/15 19:13:25 martynas Exp $ */
/* $NetBSD: cmd1.c,v 1.9 1997/07/09 05:29:48 mikel 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.
*/
#ifndef lint
#if 0
static const char sccsid[] = "@(#)cmd1.c 8.2 (Berkeley) 4/20/95";
#else
static const char rcsid[] = "$OpenBSD: cmd1.c,v 1.27 2008/07/15 19:13:25 martynas Exp $";
#endif
#endif /* not lint */
#include "rcv.h"
#include "extern.h"
/*
* Mail -- a mail program
*
* User commands.
*/
/*
* Print the current active headings.
* Don't change dot if invoker didn't give an argument.
*/
static int screen;
static volatile sig_atomic_t gothdrint;
int
headers(void *v)
{
int *msgvec = v;
int n, mesg, flag, size;
struct message *mp;
struct sigaction act, oact;
sigset_t oset;
size = screensize();
n = msgvec[0];
if (n != 0 && size > 0)
screen = (n-1)/size;
if (screen < 0)
screen = 0;
mp = &message[screen * size];
if (mp >= &message[msgCount])
mp = &message[msgCount - size];
if (mp < &message[0])
mp = &message[0];
flag = 0;
mesg = mp - &message[0];
if (dot != &message[n-1])
dot = mp;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_RESTART;
act.sa_handler = hdrint;
if (sigaction(SIGINT, NULL, &oact) == 0 &&
oact.sa_handler != SIG_IGN) {
(void)sigaction(SIGINT, &act, &oact);
(void)sigprocmask(SIG_UNBLOCK, &intset, &oset);
}
for (gothdrint = 0; !gothdrint && mp < &message[msgCount]; mp++) {
mesg++;
if (mp->m_flag & MDELETED)
continue;
if (flag++ >= size)
break;
printhead(mesg);
}
if (gothdrint) {
fflush(stdout);
fputs("\nInterrupt\n", stderr);
}
if (oact.sa_handler != SIG_IGN) {
(void)sigprocmask(SIG_SETMASK, &oset, NULL);
(void)sigaction(SIGINT, &oact, NULL);
}
if (flag == 0) {
puts("No more mail.");
return(1);
}
return(0);
}
/*
* Scroll to the next/previous screen
*/
int
scroll(void *v)
{
char *arg = v;
int size, maxscreen;
int cur[1];
cur[0] = 0;
size = screensize();
maxscreen = 0;
if (size > 0)
maxscreen = (msgCount - 1) / size;
switch (*arg) {
case 0:
case '+':
if (screen >= maxscreen) {
puts("On last screenful of messages");
return(0);
}
screen++;
break;
case '-':
if (screen <= 0) {
puts("On first screenful of messages");
return(0);
}
screen--;
break;
default:
printf("Unrecognized scrolling command \"%s\"\n", arg);
return(1);
}
return(headers(cur));
}
/*
* Compute screen size.
*/
int
screensize(void)
{
int s;
char *cp;
if ((cp = value("screen")) != NULL && (s = atoi(cp)) > 0)
return(s);
return(screenheight - 4);
}
/*
* Print out the headlines for each message
* in the passed message list.
*/
int
from(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != NULL; ip++)
printhead(*ip);
if (--ip >= msgvec)
dot = &message[*ip - 1];
return(0);
}
/*
* Print out the header of a specific message.
* This is a slight improvement to the standard one.
*/
void
printhead(int mesg)
{
struct message *mp;
char headline[LINESIZE], *subjline, dispc, curind;
char visname[LINESIZE], vissub[LINESIZE];
char pbuf[LINESIZE];
char fmtline[LINESIZE];
const char *fmt;
struct headline hl;
char *name;
char *to, *from;
struct name *np;
char **ap;
mp = &message[mesg-1];
(void)readline(setinput(mp), headline, LINESIZE, NULL);
if ((subjline = hfield("subject", mp)) == NULL &&
(subjline = hfield("subj", mp)) == NULL)
subjline = "";
/*
* Bletch!
*/
curind = dot == mp ? '>' : ' ';
dispc = ' ';
if (mp->m_flag & MSAVED)
dispc = '*';
if (mp->m_flag & MPRESERVE)
dispc = 'P';
if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
dispc = 'N';
if ((mp->m_flag & (MREAD|MNEW)) == 0)
dispc = 'U';
if (mp->m_flag & MBOX)
dispc = 'M';
parse(headline, &hl, pbuf);
from = nameof(mp, 0);
to = skin(hfield("to", mp));
np = extract(from, GTO);
np = delname(np, myname);
if (altnames)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
if (np)
/* not from me */
name = value("show-rcpt") != NULL && to ? to : from;
else
/* from me - show TO */
name = value("showto") != NULL && to ? to : from;
strnvis(visname, name, sizeof(visname), VIS_SAFE|VIS_NOSLASH);
if (name == to)
fmt = "%c%c%3d TO %-14.14s %16.16s %4d/%-5d %s";
else
fmt = "%c%c%3d %-17.17s %16.16s %4d/%-5d %s";
strnvis(vissub, subjline, sizeof(vissub), VIS_SAFE|VIS_NOSLASH);
/* hl.l_date was sanity-checked when read in. */
snprintf(fmtline, sizeof(fmtline), fmt, curind, dispc, mesg, visname,
hl.l_date, mp->m_lines, mp->m_size, vissub);
printf("%.*s\n", screenwidth, fmtline);
}
/*
* Print out the value of dot.
*/
int
pdot(void *v)
{
printf("%d\n", (int)(dot - &message[0] + 1));
return(0);
}
/*
* Print out all the possible commands.
*/
int
pcmdlist(void *v)
{
extern const struct cmd cmdtab[];
const struct cmd *cp;
int cc;
puts("Commands are:");
for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
cc += strlen(cp->c_name) + 2;
if (cc > 72) {
putchar('\n');
cc = strlen(cp->c_name) + 2;
}
if ((cp+1)->c_name != NULL)
printf("%s, ", cp->c_name);
else
puts(cp->c_name);
}
return(0);
}
/*
* Pipe message to command
*/
int
pipeit(void *ml, void *sl)
{
int *msgvec = ml;
char *cmd = sl;
return(type1(msgvec, cmd, 0, 0));
}
/*
* Paginate messages, honor ignored fields.
*/
int
more(void *v)
{
int *msgvec = v;
return(type1(msgvec, NULL, 1, 1));
}
/*
* Paginate messages, even printing ignored fields.
*/
int
More(void *v)
{
int *msgvec = v;
return(type1(msgvec, NULL, 0, 1));
}
/*
* Type out messages, honor ignored fields.
*/
int
type(void *v)
{
int *msgvec = v;
return(type1(msgvec, NULL, 1, 0));
}
/*
* Type out messages, even printing ignored fields.
*/
int
Type(void *v)
{
int *msgvec = v;
return(type1(msgvec, NULL, 0, 0));
}
/*
* Type out the messages requested.
*/
int
type1(int *msgvec, char *cmd, int doign, int page)
{
int nlines, *ip, restoreterm;
struct message *mp;
struct termios tbuf;
char *cp;
FILE *obuf;
obuf = stdout;
restoreterm = 0;
/*
* start a pipe if needed.
*/
if (cmd) {
restoreterm = (tcgetattr(fileno(stdin), &tbuf) == 0);
obuf = Popen(cmd, "w");
if (obuf == NULL) {
warn("%s", cmd);
obuf = stdout;
}
} else if (value("interactive") != NULL &&
(page || (cp = value("crt")) != NULL)) {
nlines = 0;
if (!page) {
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
nlines += message[*ip - 1].m_lines;
}
if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
restoreterm = (tcgetattr(fileno(stdin), &tbuf) == 0);
cp = value("PAGER");
obuf = Popen(cp, "w");
if (obuf == NULL) {
warn("%s", cp);
obuf = stdout;
}
}
}
/*
* Send messages to the output.
*/
for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
mp = &message[*ip - 1];
touch(mp);
dot = mp;
if (cmd == NULL && value("quiet") == NULL)
fprintf(obuf, "Message %d:\n", *ip);
if (sendmessage(mp, obuf, doign ? ignore : 0, NULL) == -1)
break;
}
if (obuf != stdout) {
(void)Pclose(obuf);
if (restoreterm)
(void)tcsetattr(fileno(stdin), TCSADRAIN, &tbuf);
}
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.
*/
int
top(void * v)
{
int *msgvec = v;
int *ip;
struct message *mp;
int c, topl, lines, lineb;
char *valtop, linebuf[LINESIZE];
FILE *ibuf;
topl = 5;
valtop = value("toplines");
if (valtop != NULL) {
topl = atoi(valtop);
if (topl < 0 || topl > 10000)
topl = 5;
}
lineb = 1;
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mp = &message[*ip - 1];
touch(mp);
dot = mp;
if (value("quiet") == NULL)
printf("Message %d:\n", *ip);
ibuf = setinput(mp);
c = mp->m_lines;
if (!lineb)
putchar('\n');
for (lines = 0; lines < c && lines <= topl; lines++) {
if (readline(ibuf, linebuf, sizeof(linebuf), NULL) < 0)
break;
puts(linebuf);
lineb = blankline(linebuf);
}
}
return(0);
}
/*
* Touch all the given messages so that they will
* get mboxed.
*/
int
stouch(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++) {
dot = &message[*ip-1];
dot->m_flag |= MTOUCH;
dot->m_flag &= ~MPRESERVE;
}
return(0);
}
/*
* Make sure all passed messages get mboxed.
*/
int
mboxit(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++) {
dot = &message[*ip-1];
dot->m_flag |= MTOUCH|MBOX;
dot->m_flag &= ~MPRESERVE;
}
return(0);
}
/*
* List the folders the user currently has.
*/
int
folders(void *v)
{
char *files = (char *)v;
char dirname[PATHSIZE];
char cmd[BUFSIZ];
if (getfold(dirname, sizeof(dirname)) < 0)
strlcpy(dirname, "$HOME", sizeof(dirname));
snprintf(cmd, sizeof(cmd), "cd %s; %s %s", dirname, value("LISTER"),
files && *files ? files : "");
(void)run_command(value("SHELL"), 0, -1, -1, "-c", cmd, NULL);
return(0);
}
/*
* Update the mail file with any new messages that have
* come in since we started reading mail.
*/
int
inc(void *v)
{
int nmsg, mdot;
nmsg = incfile();
if (nmsg == 0) {
puts("No new mail.");
} else if (nmsg > 0) {
mdot = newfileinfo(msgCount - nmsg);
dot = &message[mdot - 1];
} else {
puts("\"inc\" command failed...");
}
return(0);
}
/*
* User hit ^C while printing the headers.
*/
void
hdrint(int s)
{
gothdrint = 1;
}