old-history-2

一个通讯程序源码

 [his patch used - wht]

In other mail he wrote:

I just found  little bugs:
1) XENIX standard cc doesn't understand prototypes with names:
"FILE *" is ok, but "FILE *fp" is bad. (patched sea/lint_args.h)
 [fixed - wht]
2) 'makedirs' program NEED last '/' in path name to make directory.
All Make.src patched to add '/' at the end of dirs.
 [fixed n a different way; makedirs now works as advertised - wht]
3) Some HDB dialers looks in argv[0] and change some parameters
(f.e. speed, etc.), so name "ECUdial" is invalid, and need change to
dve->dialprog. WARNING: this patch required my previous patch
(use 'token' instead of 'stripped_num')
 [his patch used - wht]

8. Jan-Piet Mens <logixwi.uucp!jpm> reported problems
with VT-220 support due to it's necessity of passing characters
with the sign bit set.  As of now, characters are read by ecu and kept
8-bit intact until they have been passed through the key mapping filter.
Keys actually input to the program or sent over the line are
limited to 7 bits for now (sorry to my international friends) since
characters with the sign-bit have internal significance to ECU.
This is a primary example of "American's Disease" (7-bit ASCII) and I'll get
it out of here as soon as I get over "Warren's Disease" (laziness).

He also reported:
> In README.P1, you write that the "nonansikeys" file may be put in
> ECULIBDIR.  This is incorrect: it is searched for in
> ECULIBDIR/.ecu [Line 193 nonansikey.c]

Acknowledgments
---------------

I've already mentioned Lothar's work in a matter-of-fact manner,
but here is the place for extreme words of appreciation. SVR4 is
very important and kudos to him for the leg up.

Robert E.  Laughlin, Naval Ocean Systems Center (NOSC), [e-mail],
reported various successes and failures.  We had a good and continuing
dialog.  His interest, suggestions and moral support did more for me than my
support of ECU did for him.

Andrew Chernov, of Relcom fame, made important suggestions and
fixes for XENIX support and for the product as a whole.  He made
some important suggestions for an older revision as well, some of
which I put in and some not (Variously, I was too lazy, busy or
the code had gone too far away from what he was patching from).
His work is laudable and important for many reasons far exceeding
his support of this little program.  Keep him in your thoughts
through these strange and wonderous times.

It was good to hear from these folks for their comments asnd fixes:

 Andy Hall <relay.EU.net!ncduk!andyh>
 Dave Hammond <dsix2!daveh
 Greg Wilkins <sir-alan!gregw>
 Michael P. Deignan <anomaly.sbs.com!mpd>
 Michael Traub <rtf.bt.co.uk!traub>
 cmcl2.NYU.EDU!panix!tbetz (Tom Betz)
 Jan-Piet Mens <logixwi.uucp!jpm>
 mudos.ann-arbor.mi.us!mju (Marc Unangst)
 lll-winken.llnl.gov!abhg!tao!tempest!whitemp
 ucsd!jadpc.cts.com!jdeitch

This file is harder to write than all of the code changes.  Not
only is it hard to remember what all bugs were reported by whom
and what changes were fixed by whom, I hope I haven't missed
crediting anyone.  if I did, please forgive me.

Keep dem cards and letters coming.


README.P4           ECU 3.10 Patch 4       Wed Aug 28 09:43:44 EDT 1991

This describes patch 4 to ECU 3.10, bringing the program to
version 3.14.

The majority of this patch deals with good work done by Paul
Slootman ([e-mail]) on the SVR4 port.  From what he
encountered, I am very very disappointed in some of the more anal
ANSI C implementations out there.  Trigraphs suck and we all knew
that, but having to cast a constant in a comparison with
strlen???  (Excuse me -- that is a trigraph -- I must learn to
say \?\?\?).

Oh well, there are a few other kinds of fixes in here too: ISC
should be better off.  Some of the conditionally compiled code
that was running for SCO only should have been in for ISC too.

I thought I had fixed the bad search for nonansikeys in
ECULIBDIR/.ecu/ instead of ECULIBDIR/, but it is fixed now.

To use:
       patch -p < PATCH4.01
       Configure
       make
       su root (may not be necessary on Sun or SVR4 if you
               have write access to the installed directories)
       make install

README.P6           ECU 3.10 Patch 6     Wed Sep  4 00:41:23 EDT 1991

This describes patch 5 to ECU 3.15, bringing the program to
version 3.15.

Files in Patch 5:
README.P5
PATCH5.01
fasi/fas.h
ckermit/ckutio-ecu.dif
memmove/README
memmove/memmove.s
memmove/memmove286.asm
memmove/memmove386.asm
timetest/Makefile
timetest/naptest.c
timetest/naptest2.c
timetest/naptest3.c
timetest/seltest.c

First, a note of apology to Sun users.  I used the -mm nroff macros
to write the manuals.  Sun provides -ms and -me, but not -mm.
I'm looking for some PD replacements, but haven't succeeded yet.
I'll be glad to mail an updated manual to anyone who asks.  I'm
also looking for a friendly ftp site to hold updates, hence manuals.

1. Improvements in the SVR4 port have been made, but now
SVR4 almost certainly means an AT&T/Intel/ISC 386 port,
                                              ^^^
since we expect to find /usr/include/sys/at_ansi.h and
/usr/include/sys/sys/kd.h files for console color capability.
(Color is not yet supported on Sun -- only monochrome xterms
and the console without color manipulation).

If you have trouble with compiling ecutty.c for SVR4 (complaints
about not finding either of these header files), temporarily remove the
SVR4 condition for inclusion of them and for using the CONS_GET code
near the bottom of the source.

2.  Many improvements were made in the area of system independence.
The build procedure configures the location of HDB Devices,
Dialcodes and Dialers files among the various environments:
SCO   /usr/lib/uucp
ISC   /usr/lib/uucp
Sun   /etc/uucp
SVR4  /etc/uucp

3. A new feature of Configure is the inclusion of local configuration
in the Makefiles it builds.  If you build a file named "config.local"
in the base source directory, it's contents will be placed ahead of
all other make statements in each Makefile.

Example customization include:
CFLAGS_EXTRA  = -Dwhatever
GCC_CFLAGS_EXTRA = -fsoft-float  #just an example :-)
CC_CGLAGS_EXTRA = -p
SYMBOLIC = -g             # if you want sdb/dbx/gdb symbols in programs
BINTIME = /bin/time       # if you want stats on each make step
LDFLAGS_EXTRA  = -ljuicier-malloc

Judicious use of this may help you avoid changing Make.src files
thus making patch complain about future patches, but 

4. A patch from Andrew Chernov that fell out of the last version
was reapplied:  Many SCO-style dialer programs do not care
what is in argument 0 (the command name) when they are executed,
but some do.  Before this patch, the argument passed was "ECUdial"
since the gendial dialers *can* make use of it.  This usage
conflicted with some of Andrew's dialers which need the actual
name passed.  So, starting with this edition, if you invoke
a dialer program, its complete pathname will appear in argv[0].
If you want the old behavior, add a file to the base directory
called config.local and place in it the line:

  CFLAGS_EXTRA = -DECUdial
 
3. The usefulness of _rc.ep has been enhanced by adding the
'setline' procedure command.	This command is only valid during the
execution of _rc.ep.  It allows you to override the selection of
a default line as if you had used the -l switch.  In fact, using
the commabnd overrides -l.

Usage: setline <filename>

This command is an exact analog of the -l command line switch.
<filename> is used on the setup screen (if it is presented)
as the default filename. If you do not edit this name, ECU will
attempt to open the line when you press End or ^D. 

<filename> has the format of a complete pathanme in /dev or simple
tty name. 

Example:
  setline '/dev/tty1a'
  setline 'tty1a'
  setline 'cua0'

5. Similarly, using the 'baud' and 'parity' procedure commands in
_rc.ep serve as an exact analog of the -b, -e and -e command line switches.
Using 'baud' and 'parity' in rc_ep override the equivalent
command line switches.

6.  On the Sun, STREAMS termios is used in lieu of termio.  The code
used for draining the line output queue ("wait for all transmitted
data to be sent over the line") has been improved, making
expect-respond, file transfer and other highly interactive operations
more reliable.

7.  The following files normally found in a personal ~/.ecu
directory may now have a systedm default in ECULIBDIR:

   colors
   keys
   nonansikeys

8. Unreported bugs in the format of the keys and nonansikeys files have
bben fixed.  Specifically, whitespace and comments are allowed after keyset
or terminal names.

9. On ISC 2.2 systems, the console was left in standout or bold
mode at exit from ECU.  I believe this problem is now fixed.

10. The GCC compilation flags for 386 versions have been updated to use
-fcall-used-bx rather than -fcall-used-{ax,bx,cs,dx].

It turns out the only problem ECU had with strenuously optimized GCC
options was that SCO's memmove clobbers the bx register, which is
supposed to be reserved for use as a register variable by all
compilers, MSC or otherwise.

If you use the new memmove routines supplied with this patch, you may
omit this switch as well.  It is probably not worth fooling with any
of that unless you are just interested in the problem.

11. I forgot to include the version 4F kermit diff file.  It's included
in here.

12. In patch 2, I reported nap() in SCO UNIX systems to be faulty in varying
manners depending on x in the 3.2.x version number.  ISC 2.2.1 nap also
misbehaves in a similar manner. 

SCO very promptly supplied me with an /etc/conf/pack.d/kernel/os.o for
relinking the kernel which fixes the problem somewhat, but not
completely.  Watch this space.  Some testing programs can be found in
timetest/ as of this patch.

13.  I've thought for some time SCO select might also be buggy.  I finally
wrote some test programs and proved it.  SCO select may appear to work
correctly for a few iterations, but rapidly degenerates into rounding
all timeout specifications to the nearest second.  Run timetest/seltest
for a visual feel of what's going on.

The #define WORKING_SELECT is now supploied by the Configure procedure
for systems that have a usable select.  See the updated README file 
note 3 and ecuutil.c Nap() for details.


README.P5           ECU 3.10 Patch 5     Wed Sep  4 00:41:23 EDT 1991

This describes patch 6 to ECU 3.16, bringing the program to
version 3.16.

Two quick fixes here:
The configuration procedure screws up when you cc on SVR4, Sun or ISC
1. I forgot to put -DWORKING_SELECT in for cc on these machines.
2. A '(' got changed to a '*' somewhere in the process.

Bad QA.  Sorry.