Date: Fri, 28 Nov 86 13:24:05 est
From: David Krowitz <mit-erl!mit-kermit!gonzo!krowitz@EDDIE.MIT.EDU>
Subject: software for Apollo workstations
Below the dashed line you will find the bundled files for the
START_FTP package, a set of small programs which will startup
the TCP/IP FTP, RIP, and TELNET servers on the Apollos after
a suitable delay to allow the TCP/IP server to get initialized.
I understand that these programs will become unecessary when
SR9.5 is released, but until then they are useful little kludges.
-- David Krowitz
----------------------------------------------------------------
# To unbundle, sh this file
echo start_ftp.bld 1>&2
cat >start_ftp.bld <<'End of start_ftp.bld'
von
pas start_ftp.pas
bind -b start_ftp start_ftp.bin
voff
End of start_ftp.bld
echo start_ftp.doc 1>&2
cat >start_ftp.doc <<'End of start_ftp.doc'
*******************************************************************************
***** *****
***** START_FTP.DOC *****
***** Version 1 *****
***** *****
***** Programming Notes for the START_FTP, START_TELNET, and *****
***** START_RIP programs for starting up the TCP/IP server *****
***** programs in the proper sequence. *****
***** *****
***** Copyright (c) 1986 *****
***** David M. Krowitz *****
***** Massachusetts Institute of Technology *****
***** Department of Earth, Atmospheric, and Planetary Sciences *****
*******************************************************************************
Starting up the SR9.2 TCP/IP Internet Server Programs
-----------------------------------------------------
If you read through the release notes for the SR9.2 version of the TCP/IP
software, you will find the following notice:
"It takes a finite amount of time for the tcp_server to start
running, and the telnet_server and ftp_server can not initialize
correctly before the tcp_server is running ..."
What this means is that your node's DM startup file (the file
/SYS/NODE_DATA/STARTUP.<node type>) can not simply startup the TCP_SERVER
program followed by the FTP_SERVER and TELNET_SERVER programs. The
TCP_SERVER must be started a few seconds prior to the other servers or
else they will die. The release notes suggest seperating the CPS command
which starts the TCP_SERVER from the CPS commands which startup the other
server. I have tried this by putting the command:
cps /sys/tcp/tcp_server -n tcp_server
as the first command in the DM startup file and the commands:
cps /sys/tcp/ftp_server -nowait -n tcp_server
cps /sys/tcp/telnet_server -n telnet_server
as the last lines in the startup file. This does not work - the servers
still die because the DM tries to start them too soon. The TCP/IP release
notes also suggest putting extra commands and comments into the DM startup
file for the sole purpose of slowing down the DM and giving the TCP_SERVER
enough time to get initialized. This is a classic inelegant 'kludge', but
I went ahead and gave it a try. I put up to 20 lines of CPS commands
into our DM startup files and the servers still died. The DM is just too
fast unless you put a *LOT* of extra commands in the startup file.
Since I'm not willing to clutter up our startup files with a lot of
extraneous garbage I went and did the 'right thing' ... I wrote some
short programs which would sleep for 5 seconds and then invoke the
appropiate server programs. START_FTP starts up a File Transfer Program
server after waiting 10 seconds, START_TELNET starts up a remote terminal
login server in a similar manner, and START_RIP starts up a routing server.
Once these three programs have been compiled and place in the node's
/SYS/TCP directory, the following sequence of DM command lines can be
placed in the node's DM startup file to start the necessary TCP/IP servers:
###
### To startup the ethernet TCP server for TELNET services
###
cps /sys/tcp/tcp_server -n tcp_server
###
### To startup the ethernet routing server (gateway only)
### after a suitable wait to let the TCP_SERVER get initialized
###
#cps /sys/tcp/start_rip
###
### To startup the ethernet FTP server for file transfer services
### after a suitable wait to let the TCP_SERVER get initialized
###
cps /sys/tcp/start_ftp
###
### To startup the ethernet TELNET server for remote login services
### after a suitable wait to let the TCP_SERVER get initialized
###
cps /sys/tcp/start_telnet
Note that the TCP_SERVER is started directly to let it get a 10 second head
start on the other servers. Also note that the RIP_SERVER is only run on the
gateway node and is usually commented out on most nodes. Why the FTP, TELNET,
and RIP servers couldn't have the necessary delay built into them is one of
the numerous mysteries of Apollo, but the enclosed startup programs will
make life just a little bit easier.
Files Needed to Build START_FTP
-------------------------------
The files which are provided with the START_FTP package are:
START_FTP.DOC - This file.
START_FTP.PAS - The Pascal sources for the program to
startup the FTP_SERVER.
START_FTP.BLD - A shell script file for compiling and
binding the START_FTP program.
START_FTP - A ready to run START_FTP. Just in case
you don't have a Pascal compiler.
START_TELNET.PAS - The Pascal sources for the program to
startup the TELNET_SERVER.
START_TELNET.BLD - A shell script file for compiling and
binding the START_TELNET program.
START_TELNET - A ready to run START_TELNET. Just in case
you don't have a Pascal compiler.
START_RIP.PAS - The Pascal sources for the program to
startup the RIP_SERVER.
START_RIP.BLD - A shell script file for compiling and
binding the START_RIP program.
START_RIP - A ready to run START_RIP. Just in case
you don't have a Pascal compiler.
You will also need the following standard Apollo-supplied files:
/SYS/INS/BASE.INS.PAS - These are all standard insert files which
/SYS/INS/CAL.INS.PAS are used by the programs above.
/SYS/INS/PGM.INS.PAS
/SYS/INS/TIME.INS.PAS
Bugs, Questions, and Improvements
---------------------------------
If you find a bugs in any of the programs, have questions on how to install or
use it, or have a good idea for improving the program please feel free to contact
me at the address below.
David M. Krowitz
MIT dept. of Earth, Atmospheric, and Planetary Sciences
Room 54-527
Cambridge, MA 02139
(617) 253-6180
network mailing address:
mit-erl!mit-kermit!krowitz@eddie.mit.edu
mit-erl!mit-kermit!krowitz@mit-eddie.arpa
david@mit-mc.arpa
(in order of decreasing preference)
End of start_ftp.doc
echo start_ftp.pas 1>&2
cat >start_ftp.pas <<'End of start_ftp.pas'
{*****************************************************************************
***** *****
***** START_FTP.PAS *****
***** *****
***** Program to sleep for 10 seconds before starting the *****
***** FTP server program in order to allow the TCP server *****
***** enough time to get initialized. *****
***** Version 3 *****
***** David M. Krowitz November 14, 1986. *****
***** *****
***** Copyright (c) 1986 *****
***** David M. Krowitz *****
***** Massachusetts Institute of Technology *****
***** Department of Earth, Atmospheric, and Planetary Sciences *****
*****************************************************************************
}
PROGRAM START_FTP;
%NOLIST;
%INCLUDE '/sys/ins/base.ins.pas';
%INCLUDE '/sys/ins/cal.ins.pas';
%INCLUDE '/sys/ins/pgm.ins.pas';
%INCLUDE '/sys/ins/time.ins.pas';
%LIST;
VAR
wait_time: TIME_$CLOCK_T; {Number of 4 usec. intervals to sleep}
args: array[1..2] of ^PGM_$ARG; {Arguments to invoked program}
conn_vec: array[0..3] of STREAM_$ID_T; {Stream connection vector}
mode: PGM_$MODE; {Program mode}
reserved: array[1..8] of char; {Reserved for future use}
status: STATUS_$T; {Status returned by PGM calls}
BEGIN
{Convert 10 seconds into system clock format (4 usec. intervals)
and then put the process to sleep in order to allow the TCP
server to get initialized before starting.}
CAL_$SEC_TO_CLOCK (10,wait_time);
TIME_$WAIT (TIME_$RELATIVE,wait_time,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_FTP: Error - TIME_$WAIT called failed ****');
PGM_$EXIT;
END;
{Invoke the FTP_SERVER program in another process.}
conn_vec[0] := STREAM_$STDIN;
conn_vec[1] := STREAM_$STDOUT;
conn_vec[2] := STREAM_$ERRIN;
conn_vec[3] := STREAM_$ERROUT;
NEW (args[1]);
NEW (args[2]);
args[1]^.len := 19; {Length of argument}
args[1]^.chars := '/sys/tcp/ftp_server'; {1st arg. is the program name}
args[2]^.len := 7; {Length of 2nd argument}
args[2]^.chars := '-nowait'; {2nd arg. is the arg to the program}
mode := [PGM_$BACK_GROUND];
PGM_$INVOKE ('/sys/tcp/ftp_server',19,2,args,4,conn_vec,mode,reserved,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_FTP: Error - failed to invoke FTP_SERVER ****');
PGM_$EXIT;
END;
END.
End of start_ftp.pas
echo start_rip.bld 1>&2
cat >start_rip.bld <<'End of start_rip.bld'
von
pas start_rip.pas
bind -b start_rip start_rip.bin
voff
End of start_rip.bld
echo start_rip.pas 1>&2
cat >start_rip.pas <<'End of start_rip.pas'
{*****************************************************************************
***** *****
***** START_RIP.PAS *****
***** *****
***** Program to sleep for 10 seconds before starting the *****
***** RIP server program in order to allow the TCP server *****
***** enough time to get initialized. *****
***** Version 3 *****
***** David M. Krowitz November 14, 1986. *****
***** *****
***** Copyright (c) 1986 *****
***** David M. Krowitz *****
***** Massachusetts Institute of Technology *****
***** Department of Earth, Atmospheric, and Planetary Sciences *****
*****************************************************************************
}
PROGRAM START_RIP;
%NOLIST;
%INCLUDE '/sys/ins/base.ins.pas';
%INCLUDE '/sys/ins/cal.ins.pas';
%INCLUDE '/sys/ins/pgm.ins.pas';
%INCLUDE '/sys/ins/time.ins.pas';
%LIST;
VAR
wait_time: TIME_$CLOCK_T; {Number of 4 usec. intervals to sleep}
args: array[1..1] of ^PGM_$ARG; {Arguments to invoked program}
conn_vec: array[0..3] of STREAM_$ID_T; {Stream connection vector}
mode: PGM_$MODE; {Program mode}
reserved: array[1..8] of char; {Reserved for future use}
status: STATUS_$T; {Status returned by PGM calls}
BEGIN
{Convert 10 seconds into system clock format (4 usec. intervals)
and then put the process to sleep in order to allow the TCP
server to get initialized before starting.}
CAL_$SEC_TO_CLOCK (10,wait_time);
TIME_$WAIT (TIME_$RELATIVE,wait_time,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_RIP: Error - TIME_$WAIT called failed ****');
PGM_$EXIT;
END;
{Invoke the RIP_SERVER program in another process.}
conn_vec[0] := STREAM_$STDIN;
conn_vec[1] := STREAM_$STDOUT;
conn_vec[2] := STREAM_$ERRIN;
conn_vec[3] := STREAM_$ERROUT;
NEW (args[1]);
args[1]^.len := 19; {Length of argument}
args[1]^.chars := '/sys/tcp/rip_server'; {1st arg. is the program name}
mode := [PGM_$BACK_GROUND];
PGM_$INVOKE ('/sys/tcp/rip_server',19,1,args,4,conn_vec,mode,reserved,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_RIP: Error - failed to invoke RIP_SERVER ****');
PGM_$EXIT;
END;
END.
End of start_rip.pas
echo start_telnet.bld 1>&2
cat >start_telnet.bld <<'End of start_telnet.bld'
von
pas start_telnet.pas
bind -b start_telnet start_telnet.bin
voff
End of start_telnet.bld
echo start_telnet.pas 1>&2
cat >start_telnet.pas <<'End of start_telnet.pas'
{*****************************************************************************
***** *****
***** START_TELNET.PAS *****
***** *****
***** Program to sleep for 10 seconds before starting the *****
***** TELNET server program in order to allow the TCP server *****
***** enough time to get initialized. *****
***** Version 3 *****
***** David M. Krowitz November 14, 1986. *****
***** *****
***** Copyright (c) 1986 *****
***** David M. Krowitz *****
***** Massachusetts Institute of Technology *****
***** Department of Earth, Atmospheric, and Planetary Sciences *****
*****************************************************************************
}
PROGRAM START_TELNET;
%NOLIST;
%INCLUDE '/sys/ins/base.ins.pas';
%INCLUDE '/sys/ins/cal.ins.pas';
%INCLUDE '/sys/ins/pgm.ins.pas';
%INCLUDE '/sys/ins/time.ins.pas';
%LIST;
VAR
wait_time: TIME_$CLOCK_T; {Number of 4 usec. intervals to sleep}
args: array[1..1] of ^PGM_$ARG; {Arguments to invoked program}
conn_vec: array[0..3] of STREAM_$ID_T; {Stream connection vector}
mode: PGM_$MODE; {Program mode}
reserved: array[1..8] of char; {Reserved for future use}
status: STATUS_$T; {Status returned by PGM calls}
BEGIN
{Convert 10 seconds into system clock format (4 usec. intervals)
and then put the process to sleep in order to allow the TCP
server to get initialized before starting.}
CAL_$SEC_TO_CLOCK (10,wait_time);
TIME_$WAIT (TIME_$RELATIVE,wait_time,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_TELNET: Error - TIME_$WAIT called failed ****');
PGM_$EXIT;
END;
{Invoke the TELNET_SERVER program in another process.}
conn_vec[0] := STREAM_$STDIN;
conn_vec[1] := STREAM_$STDOUT;
conn_vec[2] := STREAM_$ERRIN;
conn_vec[3] := STREAM_$ERROUT;
NEW (args[1]);
args[1]^.len := 22; {Length of argument}
args[1]^.chars := '/sys/tcp/telnet_server'; {1st arg. is the program name}
mode := [PGM_$BACK_GROUND];
PGM_$INVOKE ('/sys/tcp/telnet_server',22,1,args,4,conn_vec,mode,reserved,status);
IF (status.all <> 0) THEN BEGIN
writeln ('**** START_TELNET: Error - failed to invoke TELNET_SERVER ****');
PGM_$EXIT;
END;
END.
End of start_telnet.pas