ckc192.upd

linux终端仿真程序

ckcmai.c, ckuus7.c.  4 Nov 93.

Added KANJI, RTS/CTS, Curses, CK_WREFRESH to DEC OSF/1 version, built, tested
OK on OSF/1-AlphaAXP 1.3.111.  RTS/CTS compiled OK, but I don't know if it
actually works.  REDIRECT compiles but doesn't work ("missing pieces").
4 Nov 93.

Added CK_TMPDIR feature to VMS version.  isdir() function for VMS received
from William Bader <[e-mail]>.  Moved CK_TMPDIR definition
from ckcker.h to ckcdeb.h, because we might want to use it in the ck?fio.c
modules.  ckuusr.c, ckcker.h, ckcker.h, ckcfns.c, ckuus[r6].c;
ckvfio.c 5A(102), 5 Nov 93. 

Rearranged #ifdefs for CK_SYSINI (compile-time option for system-wide init
file) and moved them from ckuusr.c to ckuusr.h.  Now you can (at least in
UNIX) give CK_DSYSINI as a command-line option to accept a built-in default
fully qualified file specification for a system-wide C-Kermit init file,
/usr/local/bin/kermit.sysini.  5 Nov 93.

Added Stratus-VOS-specific modules from David R. Lane, SoftCom Systems Inc:
cklcon.c, cklfio.c, ckltio.c, cklnet.c (includes TCP/IP and X.25), ckldef.c,
plus build procedure cklmak.cm.  5 Nov 93.

Added automatic enabling of REDIRECT command for various UNIX systems where
we know it works in ckcdeb.h.  Can be overridden by defining NOREDIRECT at
compile time.  6 Nov 93.

Fixed stupid mistake in system-wide init-file #ifdefs, noticed by Jamie
Watson.  ckuusr.h, 6 Nov 93.  Also, fixed SHOW commands to display system-wide
init file name if it has been configured and used, and to allow more space for
displaying it.  Also, changed init file name buffer to be dynamically
allocated if DCMDBUF defined, and increased its size from 100 to 256 since it
can now be a full path name.

Added a new command-line argument: -D n (uppercase D followed by a number),
equivalent of SET DELAY command.  Jamie Watson noticed there was no way to
get Kermit to use a shorter (or different) delay when sending files via
command-line arguments.  ckuusy.c.  6 Nov 93.

Added correct identification of Alpha (AXP) CPU for \v(cpu), designer banners
for DEC OSF/1 on Alpha.  Also added O2 optimization, ANSI C prototyping, plus
REDIRECT command is now working on Alpha-OSF/1.  \v(cpu) also works on OpenVMS
AXP.  Combined dec-osf and dec-osf-pc UNIX makefile entries.  6 Nov 93.

After EXITing from the wrong Kermit one time too many, unintentionally
dropping a connection, I added a new command SET EXIT WARNING { ON, OFF }.
If ON, and Kermit is in local mode, and it thinks it has an open serial or
network connection, it will warn you and give you a chance to back out of
the EXIT command.  EXIT WARNING OFF is the default, for compatibility.
ckuusr.h ckuusr.c ckuus3.c, 6 Nov 93.  NOTE: the ability of C-Kermit to know
whether a connection is open or not depends on a lot of system-dependent
things.  In UNIX and OS/2, Kermit's guess is pretty reliable, based on the
"tty" file descriptor (ttyfd), modem signals, etc.  In other versions, we
can't tell so well, so we always warn and ask if EXIT WARNING is ON.

In the course of adding SET EXIT WARNING, fixed a bug in the command package,
in which, if a temporary prompt was in effect and prompt() was called with a
NULL conversion function, then ?-help would put back the regular prompt
instead of the temporary one.  ckucmd.c 5A(055) 6 Nov 93.

Added SHOW EXIT to display EXIT WARNING setting, exit status.  ckuus5.c.

Added ttruncmd() code for OS/2 from Kai Uwe Rommel, and enabled
REDIRECT command for OS/2.  ckotio.c 5A(106), 6 Nov 93.

Added IF DIRECTORY command.  Succeeds if operand is a directory, fails
otherwise.  Uses new isdir() function, currently filled in for UNIX, VMS,
OS/2.  Is included if CK_TMPDIR symbol is defined.  ckuusr.h, ckuus6.c,
6 Nov 93.

Added IF NEWER command.  Compares modification (or creation) date/times
of two files, succeeds if first file is newer than second file.  Depends
on zfcdat() function, which is defined for most versions, but not for VMS
or OS-9.  Added a section to ckcdeb.h that defines the symbol ZFCDAT for
each implementation that provides this function.  ckcdeb.h, ckuusr.h,
ckuus6.c, 6 Nov 93.

Added new function \Fdate(filename).  Available if ZFCDAT is defined.
Returns creation date of file in "yyyymmdd hh:mm:ss" format, or else the
null string upon failure.  Also changed SHOW FUNCTIONS to do "more?"-style
paging, like SHOW VARIABLES.  ckuusr.h, ckuus4.c, ckuus5.c.  6 Nov 93.

Changed SET BUFFERS command to default the second (receive) buffer to be
the same size as the first (send) buffer, so user doesn't have to type two
numbers.  ckuus3.c, 6 Nov 93.

Added CK_WREFRESH support for DEC ULTRIX (all versions) and IBM RT PC AIX.
Verified by Jamie Watson.  ckcdeb.h, 7 Nov 93.

Increased -Olimit for ULTRIX 4.2, since new \v(dialstatus) code pushed the
optimizer over the edge.  From Jamie Watson.  makefile, 7 Nov 93.

Changed SET EXIT WARNING to not warn on a serial connection if SET CARRIER
is OFF.  ckuusr.c, 7 Nov 93.

Added SET EXIT STATUS to let user set program return code without actually
having to exit.  For example, user can OR in various bits at different times.
ckuus3.c, 7 Nov 93.

Updated UNIX man page.  ckuker.nr, 8 Nov 93.

Added zfcdat() to VMS version, for \fdate(filename), IF NEWER, etc.
Contributed by William Bader.  CKVFIO.C 5A(104), 9 Nov 93.

Changed VMS C-Kermit version to always be in foreground mode, i.e. to never
set the backgrd flag.  There is no notion of background (in the UNIX sense) in
VMS.  If C-Kermit is not running on a real terminal, then either it has its
SYS$INPUT and/or SYS$OUTPUT redirected, or it's running in batch.  In either
case, it can always do console output.  Also, I installed a patch from
<[e-mail]> to sysinit() to prevent it from trying to get info about
the console terminal when the console is not a terminal.  CKVTIO.C 2.0(063),
9 Nov 93.

Got new LIBCMU ...

Discovered that the new INPUT buffering broke code the INPUT command under
certain circumstances, notably when using a VMS C-Kermit script to make a
TCP/IP connection; after the first 1-second timeout, netinc(1) would start to
get i/o errors (socket_errno == EBUSY, "Mount device busy") and then would
return -1 immediately without actually timing out any more.  The INPUT
buffering code made the erroneous assumption that if ttchk() returned a
positive number n, that n successive calls to ttinc() would succeed, and this
is apparently not always the case in VMS.  For now, the quick fix is to remove
the INPUT buffering code (I left it in place, but conditionalized on CK_BURST,
which is #undef'd).  When I have some spare time, I'll change INPUT to do its
own buffering, just like CONNECT, rather than relying on some unseen and
possibly unreliable underlying buffering mechanism.  ckuus4.c, 9 Nov 93.

Edited OS/2 section of standard (sample) CKERMOD.INI file to not swap Esc and
accent grave keys, and to include hint messages about key mapping and colors.

Changed -Otcl in SCO Xenix 3.2 to -O.  It seems that -Otcl was producing bad
code, at least in the SCRIPT command (noticed by Michael Haws
<[e-mail]>; expect strings would always fail).  makefile, 12 Nov 93.

Added \v(keyboard) for OS/2 C-Kermit.  Returns keyboard type: 88, 101, 122,
are the known types.  If OS/2 senses some other type, its 4-byte hex code is
returned.  If OS/2 fails to get the keyboard type, the empty string is
returned.  Code adapted from Kai Uwe Rommel's example.  ckcdeb.h, ckuusr.h,
ckuus4.c, ckotio.c, cpcplm.doc.  15 Nov 93.

Added WILL SGA response to DO SGA.  This never came up before.  Problem
reported by Wayne Hauber <[e-mail]>, with Apartus Technologies
Telnet Gateway Service to Iowa State U Library's NOTIS system.  ckcnet.c
5A(022), 17 Nov 93.

Changed debug log entries for TELNET negotiations to be one-liners, all
starting with TELNET, looking mostly like the UNIX telnet "toggle options"
display.  Now you can get all TELNET negotions via "grep ^TELNET debug.log".
ckcnet.c.  17 Nov 93.

Peter Kabal <[e-mail]> noticed that SET SPEED can fail in
Ultrix 4.2 on the DECstation 2100 for speeds over 9600, but the system call
does not return any error indication.  Therefore, all three places in C-Kermit
that call ttsspd() to set the device's speed were changed to read it back
with ttgspd() before setting the global 'speed' variable.  ckuus3.c, ckuus7.c,
ckuusy.c, 17 Nov 93.

Changed the OS/2 C-Kermit installation procedure to skip all COM-port related
questions if the user says she will not be using a COM port (e.g. for
TCP/IP-only installation), and to skip modem-related questions if a modem will
not be used.  ckoins.cmd (= install.cmd), 17 Nov 93.

Discovered why certain login scripts were not working on OS/2.  The clause
"for (j = i; i-- > 0; )" was not generating the intended code, at least not
when compiled by IBMCPP (the same code worked OK in most other versions).
Moved the decrementing of i into the loop and then it worked fine.  ckuus4.c,
18 Nov 93.

After successfully executing a login script, OS/2 C-Kermit tended to have its
echoing wrong.  To alleviate this problem, apparently caused by tn_ini() being
called multiple times gratuitously, in spite of seemingly scrupulous setting
and clearing of the tn_init flag at all appropriate places, I removed all
calls to tn_ini() (and all references to tn_init) from all modules of all
C-Kermit versions.  tn_ini() is now called only from within net_open(), after
net_open() has determined that it has just made a successful TELNET
connection.  Many modules affected: ck*tio.c, ck*net.c, ck*con.c, 18 Nov 93.

Changed OS/2 C-Kermit "set terminal color normal" to "set terminal color
terminal-screen", which makes more sense.  Left "normal" as an invisible
synonym.  ckuus7.c, 18 Nov 93.

Discovered that TELNET'ing from OS/2 C-Kermit to a host with a long name
tended not to work.  In one case ("telnet martini.eecs.umich.edu 3000"), it
would crash C-Kermit completely.  Traced the problem to (a) an inadequate
buffer size in ckotio.c, which in turn was based on a pre-network definition
of the symbol DEVNAMLEN, and (b) the use of strcpy() rather than strncpy() in
ckocon for setting up the status line.  Also, I rearranged the status line
to give more room to display the host name.
ckocon.c 5A(105), ckotio.c 5A(108) 18 Nov 93.

REDIRECT doesn't work on OS/2 network connections, so I changed the REDIRECT
command to fail under these conditions (instead of doing nothing).  ckuusr.c
5A(111) 18 Nov 93.

The INPUT command did not work correctly on VMS systems with DEC TCP/IP (UCX)
when executed over a TELNET connection.  Diagnosis: when the socket_read()
call was interrupted by an alarm/longjmp, subsequent calls to socket_read()
would fail with socket_errno 16, EBUSY, "mount device busy".  Cure: replace
the timer in netinc(), formerly alarm/signal/longjmp, with select().
Complication: the UCX programming environment did not include the necessary
header file, so the needed items (including copyright notice) had to be copied
from 4.4BSD /usr/include/sys/types.h.  Note: It would also be possible to add
select() for MultiNet, but it doesn't seem necessary; scripts, timeouts, etc,
work ok.  ckcnet.h, ckcnet.c 5A, 20 Nov 93.

Now that the VMS and OS/2 INPUT commands are fixed, I tried turning on
CK_BURST again (speedup for INPUT command by detecting bursts, code from Chuck
Goodheart at NASA).  It works in MultiNet on the Alpha.  It works in MultiNet
on the VAX.  It works in UCX on the VAX.  It works in UNIX.  It works in OS/2
on both serial and TCP/IP connections.  And it's fast.  Tested with many
services directory entries.  ckuus4.c, 20 Nov 93.

Added a new variable \v(cps), that tells the speed in characters per second of
the last protocol operation.  ckuusr.h, ckuus4.c.  20 Nov 93.

Added a new function \fsize(filename), which returns the size of the given
file.  ckuusr.h, ckuus4.c.  20 Nov 93.

Changed SHOW FUNCTIONS and SHOW VARIABLES not to list invisible items.
ckuus5.c, 20 Nov 93.

Peter Manzella at DEC noticed that MSEND commands could fail in VMS because of
a memory leak in ckuusr.c.  Solution: (1) increase the size of the buffer for
VMS from 1K to 4K (since it needs it, and can afford the memory); (2) plug the
memory leak.  The same thing could happen in UNIX as a result of
tilde-expansion.  ckucmd.h (CMDBL definition), ckuusr.c 5A(112), 20 Nov 93.

Added a trailing catch-all #else clause for the new CK_TMPDIR section in
the RECEIVE command, suggested by David Lane.  ckuusr.c, 20 Nov 93.

Changed SET KEY to allow { braces } around the key definition, like OUTPUT,
INPUT, ECHO, and other commands, to allow easier specification of strings
with leading and/or trailing blanks, and for consistency with all the other
commands.  ckuusr.c, 20 Nov 93.

Noticed that curses did not always do a great job of optimizing screen