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ckuusr.c
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ckuusr.c
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#ifndef NOICP
char *userv = " JSYS UI, 4G(128)";
#endif /* ifndef NOICP */
/* C K U U S R -- "User Interface" (Part 1) */
/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2021, 2022, 2023 Jeffrey H. Johnson <trnsz@pobox.com>
*
* Copyright (c) 1981-2011,
* Trustees of Columbia University in the City of New York.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of Columbia 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* HOLDER 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.
*/
/*
* The ckuusr module contains the terminal input and output functions
* for UNIX Kermit. It includes a simple UNIX-style command line
* parser as well as an interactive prompting keyword command parser.
* It depends on the existence of UNIX facilities like fopen, fgets,
* feof, (f)printf, argv/argc, etc. Other functions that are likely
* to vary among UNIX implementations -- like setting terminal modes
* or interrupts -- are invoked via calls to functions that are defined
* in the system-dependent modules, ck?[ft]io.c.
*
* The command line parser processes any arguments found on the command
* line, as passed to main() via argv/argc. The interactive parser uses
* the facilities of the cmd package (developed for this program, but
* usable by any program).
*
* Any command parser may be substituted for this one. The only
* requirements for the Kermit command parser are these:
*
* 1. Set parameters via global variables like duplex, speed, ttname, etc.
* See ckmain.c for the declarations and descriptions of these variables.
*
* 2. If a command can be executed without the use of Kermit protocol, then
* execute the command directly and set the variable sstate to 0. Examples
* include 'set' commands, local directory listings, the 'connect' command.
*
* 3. If a command requires the Kermit protocol, set the following
* variables:
*
* sstate string data
* 'x' (enter server mode) (none)
* 'r' (send a 'get' command) cmarg, cmarg2
* 'v' (enter receive mode) cmarg2
* 'g' (send a generic command) cmarg
* 's' (send files) nfils, cmarg & cmarg2 OR cmlist
* 'c' (send a remote host command) cmarg
*
* cmlist is an array of pointers to strings.
* cmarg, cmarg2 are pointers to strings.
* nfils is an integer.
*
* cmarg can be a filename string (possibly wild), or
* a pointer to a prefabricated generic command string, or
* a pointer to a host command string.
* cmarg2 is the name to send a single file under, or
* the name under which to store an incoming file; must not be wild.
* cmlist is a list of nonwild filenames, such as passed via argv.
* nfils is an integer, interpreted as follows:
* -1: argument string is in cmarg, and should be expanded internally.
* 0: stdin.
* >0: number of files to send, from cmlist.
*
* The screen() function is used to update the screen during file transfer.
* The tlog() function maintains a transaction log.
* The debug() function maintains a debugging log.
* The intmsg() and chkint() functions provide the
* user i/o for interrupting file transfers.
*/
#include "ckcdeb.h"
#include <ctype.h>
#include <stdio.h>
#include <setjmp.h>
#include <signal.h>
#include "ckcker.h"
#include "ckucmd.h"
#include "ckuusr.h"
#ifdef __linux__
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#endif /* ifdef __linux__ */
#ifndef NOSERVER
extern int server;
#endif /* ifndef NOSERVER */
extern int size, rpsiz, urpsiz, speed, local, binary;
#ifndef NOICP
extern int displa;
#endif /* ifndef NOICP */
extern int parity, deblog, escape, xargc, flow, turn, duplex, nfils;
extern int ckxech, pktlog, seslog, tralog, stdouf, turnch, dfloc, keep;
extern int maxrps, warn, quiet, cnflg, tlevel, mdmtyp, zincnt;
extern char *versio;
#ifdef WART
extern char *protv;
#endif /* ifdef WART */
extern char *ckxv, *ckzv, *fnsv, *dftty, *cmdv;
#ifndef NOICP
extern char *connv;
#endif /* ifndef NOICP */
extern char *wartv;
#ifndef NOCKUDIA
extern char *dialv;
#endif /* ifndef NOCKUDIA */
#ifndef NOCKUSCR
extern char *loginv;
#endif /* ifndef NOCKUSCR */
extern char *ckxsys, *cmarg, *cmarg2;
extern char **xargv, **cmlist;
extern char *DIRCMD, *PWDCMD, cmerrp[];
extern CHAR sstate, ttname[];
extern CHAR *zinptr;
char *strcpy(), *getenv();
extern char cmdbuf[]; /* Command buffer */
#ifndef NOSPACE
extern char *SPACMD, *zhome(); /* Space command, home directory. */
#endif /* ifndef NOSPACE */
extern int backgrd; /* Kermit executing in background */
/*
* The background flag is set by ckutio.c
* ( via conint() ) to note whether
* this kermit is executing in background
* ( '&' on shell command line ).
*/
#ifndef NOICP
char line[CMDBL + 10], *lp; /* Character buffer for anything */
#endif /* ifndef NOICP */
#ifndef NOLOGS
char debfil[30]; /* Debugging log file name */
char pktfil[30]; /* Packet log file name */
char sesfil[30]; /* Session log file name */
char trafil[30]; /* Transaction log file name */
#endif /* ifndef NOLOGS */
int cflg; /* Command-line connect cmd given */
int action; /* Action selected on command line*/
#ifndef NOICP
int repars; /* Reparse needed */
int cwdf = 0; /* CWD has been done */
#define MAXTAKE 3 /* Maximum nesting of TAKE files */
FILE *tfile[MAXTAKE]; /* File pointers for TAKE command */
char *homdir; /* Pointer to home directory string */
#endif /* ifndef NOICP */
#ifndef MINBUF
char cmdstr[100]; /* Place to build generic command */
#else /* ifndef MINBUF */
char cmdstr[48];
#endif /* ifndef MINBUF */
/* C M D L I N -- Get arguments from command line */
/*
* Simple UNIX-style command line parser, conforming with
* 'A Proposed Command Syntax Standard for UNIX Systems',
* Hemenway & Armitage, UNIX/World, Vol.1, No.3, 1984.
*/
int
cmdlin()
{
char x; /* Local general-purpose int */
cmarg = ""; /* Initialize globals */
cmarg2 = "";
action = cflg = 0;
while (--xargc > 0) /* Go through command line words */
{
xargv++;
debug(F111, "xargv", *xargv, xargc);
if (**xargv == '-') /* Got an option (begins with dash) */
{
x = *( *xargv + 1 ); /* Get the option letter */
if (doarg(x) < 0)
{
doexit(BAD_EXIT); /* Go handle the option */
}
}
else /* No dash where expected */
{
usage();
doexit(BAD_EXIT);
}
}
debug(F101, "action", "", action);
if (!local)
{
if (
( action == 'g' ) || ( action == 'r' ) || ( action == 'c' ) ||
( cflg != 0 ))
{
fatal("-l and -b required");
}
}
if (*cmarg2 != 0)
{
if (( action != 's' ) && ( action != 'r' ) && ( action != 'v' ))
{
fatal("-a without -s, -r, or -g");
}
}
if (( action == 'v' ) && ( stdouf ) && ( !local ))
{
if (isatty(1))
{
fatal("unredirected -k only for local mode");
}
}
if (( action == 's' ) || ( action == 'v' ) || ( action == 'r' ) ||
( action == 'x' ))
{
if (local)
{
#ifndef NOICP
displa = 1;
#endif /* ifndef NOICP */
}
if (stdouf)
{
#ifndef NOICP
displa = 0;
quiet = 1;
#endif /* ifndef NOICP */
}
}
if (quiet)
{
#ifndef NOICP
displa = 0; /* No display if quiet requested */
#endif /* ifndef NOICP */
}
if (cflg)
{
#ifndef NOCONN
conect(); /* Connect if requested */
#endif /* ifndef NOCONN */
if (action == 0)
{
if (cnflg)
{
#ifndef NOCONN
conect(); /* And again if requested */
#endif /* if def NOCON */
}
doexit(GOOD_EXIT); /* Then exit indicating success */
}
}
#ifndef NOICP
if (displa)
{
concb(escape); /* (for console "interrupts") */
}
#endif /* ifndef NOICP */
return ( action ); /* Then do any requested protocol */
}
/* D O A R G -- Do a command-line argument */
int
doarg(x)
char x;
{
int z;
char *xp;
xp = *xargv + 1; /* Pointer for bundled args */
while (x)
{
switch (x)
{
#ifndef NOSERVER
case 'x': /* server */
if (action)
{
fatal("bad request");
}
action = 'x';
break;
#endif
case 'f':
if (action)
{
fatal("bad request");
}
action = setgen('F', "", "", "");
break;
case 'r': /* receive */
if (action)
{
fatal("bad request");
}
action = 'v';
break;
case 'k': /* receive to stdout */
if (action)
{
fatal("bad request");
}
stdouf = 1;
action = 'v';
break;
case 's': /* send */
if (action)
{
fatal("bad request");
}
if (*( xp + 1 ))
{
fatal("invalid arg");
}
z = nfils = 0; /* Initialize file counter, flag */
cmlist = xargv + 1; /* Remember this pointer */
while (--xargc > 0) /* Traverse the list */
{
xargv++;
if (**xargv == '-') /* Check for sending stdin */
{
if (strcmp(*xargv, "-") != 0)
{
break;
}
z++;
}
nfils++; /* Bump file counter */
}
xargc++, xargv--; /* Adjust argv/argc */
if (nfils < 1)
{
fatal("missing filename");
}
if (z > 1)
{
fatal("-s: too many -'s");
}
if (z == 1)
{
if (nfils == 1)
{
nfils = 0;
}
else
{
fatal("invalid mix of filenames and '-' in -s");
}
}
if (nfils == 0)
{
if (isatty(0))
{
fatal("terminal input not allowed");
}
}
debug(F101, *xargv, "", nfils);
action = 's';
break;
case 'g': /* get */
if (action)
{
fatal("bad request");
}
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc == 0 ) || ( **xargv == '-' ))
{
fatal("missing filename");
}
cmarg = *xargv;
action = 'r';
break;
#ifndef NOCONN
case 'c': /* connect before */
cflg = 1;
break;
case 'n': /* connect after */
cnflg = 1;
break;
#endif /* ifndef NOCONN */
#ifndef NODOHLP
case 'h': /* help */
usage();
doexit(GOOD_EXIT);
#endif /* ifndef NODOHLP */
case 'a': /* "as" */
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc < 1 ) || ( **xargv == '-' ))
{
fatal("missing name");
}
cmarg2 = *xargv;
break;
case 'l': /* set line */
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc < 1 ) || ( **xargv == '-' ))
{
fatal("missing name");
}
strcpy(ttname, *xargv);
/* if (strcmp(ttname,dftty) == 0) local = dfloc; else local = 1; */
local = ( strcmp(ttname, CTTNAM) != 0 ); /* (better than old way) */
debug(F101, "local", "", local);
ttopen(ttname, &local, 0);
break;
case 'b': /* set baud */
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc < 1 ) || ( **xargv == '-' ))
{
fatal("missing baud");
}
z = atoi(*xargv); /* Convert to number */
if (chkspd(z) > -1)
{
speed = z; /* Check it */
}
else
{
fatal("unsupported baud");
}
break;
case 'e': /* Extended packet length */
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc < 1 ) || ( **xargv == '-' ))
{
fatal("missing length");
}
z = atoi(*xargv); /* Convert to number */
if (z > 10 && z < maxrps)
{
rpsiz = urpsiz = z;
if (z > 94)
{
rpsiz = 94; /* Fallback if other Kermit can't */
}
}
else
{
fatal("Unsupported length");
}
break;
case 'i': /* Treat files as text */
binary = 0;
break;
case 'w': /* File overwrite */
warn = 0;
break;
case 'q': /* Quiet */
quiet = 1;
break;
case 'd': /* debug */
#ifndef NOLOGS
#ifdef DEBUG
debopn("debug.log");
#endif /* ifdef DEBUG */
#endif /* ifndef NOLOGS */
break;
case 'p': /* set parity */
if (*( xp + 1 ))
{
fatal("invalid arg");
}
xargv++, xargc--;
if (( xargc < 1 ) || ( **xargv == '-' ))
{
fatal("missing parity");
}
switch (x = **xargv)
{
case 'e':
case 'o':
case 'm':
case 's':
parity = x;
break;
case 'n':
parity = 0;
break;
default:
fatal("invalid parity");
}
break;
case 't':
turn = 1; /* Line turnaround handshake */
turnch = XON; /* XON is turnaround character */
duplex = 1; /* Half duplex */
flow = 0; /* No flow control */
break;
default:
#ifndef NODOHLP
fatal("invalid arg, try '-h' for help");
#else
fatal("invalid argument");
#endif /* ifndef NODOHLP */
}
x = *++xp; /* See if options are bundled */
}
return ( 0 );
}
/*
* Misc
*/
int
fatal(msg)
char *msg;
{
/* Fatal error message */
fprintf(stderr, "\rFatal: %s\r\n", msg);
#ifndef NOLOGS
#ifdef TLOG
tlog(F110, "Fatal:", msg, 0l);
#endif /* ifdef TLOG */
#endif /* ifndef NOLOGS */
doexit(BAD_EXIT); /* Exit indicating failure */
return ( BAD_EXIT );
}
int
ermsg(msg)
char *msg;
{
/* Print error message */
if (!quiet)
{
fprintf(stderr, "\r\n%s - %s\n",
#ifndef NOICP
cmerrp,
#else /* ifndef NOICP */
"",
#endif /* ifndef NOICP */
msg);
}
#ifndef NOLOGS
#ifdef TLOG
tlog(F110, "Error -", msg, 0l);
#endif /* ifdef TLOG */
#endif /* ifndef NOLOGS */
return ( 0 );
}
/*
* Interactive command
* parser
*/
/*
* Top-Level Keyword
* Table
*/
#ifndef NOICP
struct keytab cmdtab[] = {
#ifndef NOPUSH
{ "!", XXSHE, 0, },
#endif /* ifndef NOPUSH */
{ "%", XXCOM, CM_INV, },
{ "bye", XXBYE, 0, },
#ifndef NOCONN
{ "c", XXCON, CM_INV, },
#endif /* ifndef NOCONN */
{ "cd", XXCWD, 0, },
{ "close", XXCLO, 0, },
#ifndef NOCONN
{ "connect", XXCON, 0, },
#endif /* ifndef NOCONN */
{ "cwd", XXCWD, 0, },
#ifndef NOCKUDIA
{ "dial", XXDIAL, 0, },
#endif /* ifndef NOCKUDIA */
{ "directory", XXDIR, 0, },
{ "echo", XXECH, 0, },
{ "exit", XXEXI, 0, },
{ "finish", XXFIN, 0, },
{ "get", XXGET, 0, },
#ifndef NOCKUDIA
{ "hangup", XXHAN, 0, },
#endif /* ifndef NOCKUDIA */
#ifndef NODOHLP
{ "help", XXHLP, 0, },
#endif /* ifndef NODOHLP */
#ifndef NOLOGS
{ "log", XXLOG, 0, },
#endif /* ifndef NOLOGS */
{ "quit", XXQUI, 0, },
/* "r", XXREC, CM_INV, */
{ "receive", XXREC, 0, },
{ "remote", XXREM, 0, },
/* "s", XXSEN, CM_INV, */
#ifndef NOCKUSCR
{ "script", XXLOGI, 0, },
#endif /* ifndef NOCKUSCR */
{ "send", XXSEN, 0, },
#ifndef NOSERVER
{ "server", XXSER, 0, },
#endif /* ifndef NOSERVER */
{ "set", XXSET, 0, },
{ "show", XXSHO, 0, },
#ifndef NOSPACE
{ "space", XXSPA, 0, },
#endif /* ifndef NOSPACE */
#ifndef NOSTATS
{ "statistics", XXSTA, 0, },
#endif /* ifndef NOSTATS */
{ "take", XXTAK, 0, },
{ "transmit", XXTRA, 0 }
};
int ncmd = ( sizeof ( cmdtab ) / sizeof ( struct keytab ));
/*
* Parameter keyword
* table
*/
struct keytab prmtab[] = {
{ "attributes", XYATTR, 0, },
{ "baud", XYSPEE, CM_INV, },
{ "block-check", XYCHKT, 0, },
{ "delay", XYDELA, 0, },
{ "duplex", XYDUPL, 0, },
#ifdef COMMENT
{ "end-of-packet", XYEOL, CM_INV, }, /* moved to send/receive */
#endif /* ifdef COMMENT */
{ "escape-character", XYESC, 0, },
{ "file", XYFILE, 0, },
{ "flow-control", XYFLOW, 0, },
{ "handshake", XYHAND, 0, },
{ "incomplete", XYIFD, 0, },
{ "line", XYLINE, 0, },
#ifndef NOCKUDIA
{ "modem-dialer", XYMODM, 0, },
#endif /* ifndef NOCKUDIA */
#ifdef COMMENT
{ "packet-length", XYLEN, CM_INV, }, /* moved to send/receive */
{ "pad-character", XYPADC, CM_INV, }, /* moved to send/receive */
{ "padding", XYNPAD, CM_INV, }, /* moved to send/receive */
#endif /* ifdef COMMENT */
{ "parity", XYPARI, 0, },
{ "prompt", XYPROM, 0, },
{ "receive", XYRECV, 0, },
{ "retry", XYRETR, 0, },
{ "send", XYSEND, 0, },
#ifndef NOSERVER
{ "server", XYSERV, 0, },
#endif /* ifndef NOSERVER */
{ "speed", XYSPEE, 0, },
#ifdef COMMENT
{ "start-of-packet", XYMARK, CM_INV, }, /* moved to send/receive */
#endif /* ifndef COMMENT */
{ "terminal", XYTERM, 0 }
/* "timeout", XYTIMO, CM_INV */ /* moved to send/receive */
};
int nprm = \
( sizeof ( prmtab ) / sizeof ( struct keytab )); /* How many parameters */
/*
* Remote Command
* Table
*/
struct keytab remcmd[] = {
{ "cd", XZCWD, CM_INV, },
{ "cwd", XZCWD, 0, },
{ "delete", XZDEL, 0, },
{ "directory", XZDIR, 0, },
{ "help", XZHLP, 0, },
{ "host", XZHOS, 0, },
{ "space", XZSPA, 0, },
{ "type", XZTYP, 0, },
{ "who", XZWHO, 0 }
};
int nrmt = ( sizeof ( remcmd ) / sizeof ( struct keytab ));
#ifndef NOLOGS
struct keytab logtab[] = {
{ "debugging", LOGD, 0, },
{ "packets", LOGP, 0, },
{ "session", LOGS, 0, },
{ "transactions", LOGT, 0 }
};
#endif /* ifndef NOLOGS */
#ifndef NOLOGS
int nlog = ( sizeof ( logtab ) / sizeof ( struct keytab ));
#endif /* ifndef NOLOGS */
#endif /* ifndef NOICP */
/*
* Show command
* arguments
*/
#define SHPAR 0 /* Parameters */
#define SHVER 1 /* Versions */
#ifndef NOICP
struct keytab shotab[] = {
{ "parameters", SHPAR, 0, },
{ "versions", SHVER, 0 }
};
#endif /* ifndef NOICP */
/* C M D I N I -- Initialize the interactive command parser */
#ifndef NOICP
int
cmdini()
{
tlevel = -1; /* Take file level */
cmsetp("uCKermit>"); /* Set default prompt */
/*
* Look for init file in
* home or current directory.
*/
homdir = zhome();
lp = line;
lp[0] = '\0';
if (homdir)
{
strcpy(lp, homdir);
if (lp[0] == '/')
{
strcat(lp, "/");
}
}
strcat(lp, KERMRC);
if (( tfile[0] = fopen(line, "r")) != NULL)
{
tlevel = 0;
debug(F110, "init file", line, 0);
}
if (homdir && ( tlevel < 0 ))
{
strcpy(lp, KERMRC);
if (( tfile[0] = fopen(line, "r")) != NULL)
{
tlevel = 0;
}
}
congm(); /* Get console tty modes */
return ( 0 );
}
#endif /* ifndef NOICP */
/*
* Display version herald
* and initial prompt
*/
#ifndef NOICP
int
herald()
{
if (!backgrd)
{
printf("%s,%s\n", versio, ckxsys);
#ifndef NODOHLP
printf("Interactive mode. Type '?' for help.\n");
#endif /* ifndef NODOHLP */
}
return ( 0 );
}
#endif /* ifndef NOICP */
/* T R A P -- Terminal interrupt handler */
#ifndef NOICP
int
trap(
#ifdef DEBUG
sig,
code
#endif /* ifdef DEBUG */
)
#ifdef DEBUG
int sig, code;
#endif /* ifdef DEBUG */
{
fprintf(stderr, "\r^C...\n");
#ifdef DEBUG
debug(F101, "trap() caught signal", "", sig);
debug(F101, " code", "", code);
#endif /* ifdef DEBUG */
doexit(GOOD_EXIT); /* Exit indicating success */
return ( 0 );
}
#endif /* ifndef NOICP */
/* S T P T R A P -- Handle SIGTSTP signals */
#ifdef __linux__
void
#endif /* ifdef __linux__ */
stptrap(
#ifdef DEBUG
sig,
code
#endif /* ifdef DEBUG */
)
#ifdef DEBUG
int sig, code;
#endif /* ifdef DEBUG */
{
#ifdef DEBUG
debug(F101, "stptrap() caught signal", "", sig);
debug(F101, " code", "", code);
#endif /* ifdef DEBUG */
conres(); /* Reset the console */
#ifdef SIGTSTP
kill(0, SIGSTOP); /* If job control, suspend the job */
#else /* ifdef SIGTSTP */
doexit(GOOD_EXIT); /* Probably won't happen otherwise */
#endif /* ifdef SIGTSTP */
concb(escape); /* Put console back in Kermit mode */
if (!backgrd)
{
#ifndef NOICP
prompt(); /* Reissue prompt when fg'd */
#endif /* ifndef NOICP */
}
}
/* P A R S E R -- Top-level interactive command parser */
#ifndef NOICP
char
parser()
{
int xx, cbn;
char *cbp;
concb(escape); /* Put console in cbreak mode. */
conint(trap); /* Turn on console terminal interrupts. */
/*
* sstate becomes nonzero when a command has been parsed that requires
* some action from the protocol module. Any non-protocol actions,
* such as local directory listing or terminal emulation, are invoked
* directly from below
*/
if (local && !backgrd)
{
printf("\n"); /* Ensure prompt will be visible */
}
sstate = 0; /* Start with no start state. */
while (sstate == 0) /* Parse cmds until action requested */
{
while (( tlevel > -1 ) && feof(tfile[tlevel])) /* If end of take */
{
fclose(tfile[tlevel--]); /* file, close it. */
cmini(ckxech); /* and clear the cmd buffer. */
if (tlevel < 0) /* Just popped out of cmd files? */
{
conint(trap); /* Check background stuff again. */
return ( 0 ); /* End of init file or whatever. */
}
}
debug(F101, "tlevel", "", tlevel);
if (tlevel > -1) /* If in take file */
{
cbp = cmdbuf; /* Get the next line. */
cbn = CMDBL;
/*
* Loop to get next command line and
* all continuation lines from take
* file.
*/
again:
if (fgets(line, cbn, tfile[tlevel]) == NULL)
{
continue;