InfoMagic Internet Tools 1995 April/Internet Tools.iso/samba/history

Text File | 1995-04-24 | 7.1 KB | 148 lines

Note: This file is now quite out of date - but perhaps that's
appropriate?


=========

This is a short history of this project. It's not supposed to be
comprehensive, just enough so that new users can get a feel for where
this project has come from and maybe where it's going to.

The whole thing really started in December 1991. I was (and still am)
a PhD student in the Computer Sciences Laboratory at the Australian
Netional University, in Canberra, Australia. We had just got a
beta copy of eXcursion from Digital, and I was testing it on my PC. At
this stage I was a MS-DOS user, dabbling in windows.

eXcursion ran (at the time) only with Dec's `Pathworks' network for
DOS. I had up till then been using PC-NFS to connect to our local sun
workstations, and was reasonably happy with it. In order to run
pathworks I had to stop using PC-NFS and try using pathworks to mount
disk space. Unfortunately pathworks was only available fro digital
workstations running VMS or Ultrix so I couldn't mount from the suns
anymore.

I had access to a a decstation 3100 running Ultrix that I used to
administer, and I got the crazy notion that the protocol that
pathworks used to talk to ultrix couldn't be that hard, and maybe I
could work it out. I had never written a network program before, and
certainly didn't know what a socket was.

In a few days, after looking at some example code for sockets, I
discovered it was pretty easy to write a program to "spy" on the file
sharing protocol. I wrote and installed this program (the sockspy.c
program supplied with this package) and captured everything that the
pathworks client said to the pathworks server.

I then tried writing short C programs (using Turbo C under DOS) to do
simple file operations on the network drive (open, read, cd etc) and
looked at the packets that the server and client exchanged. From this
I worked out what some of the bytes in the packets meant, and started
to write my own program to do the same thing on a sun.

After a day or so more I had my first successes and actually managed
to get a connection and to read a file. From there it was all
downhill, and a week later I was happily (if a little unreliably)
mounting disk space from a sun to my PC running pathworks. The server
code had a lot of `magic' values in it, which seemed to be always
present with the ultrix server. It was not till 2 years later that I
found out what all these values meant.

Anyway, I thought other people might be interested in what I had done,
so I asked a few people at uni, and noone seemed much interested. I
also spoke to a person at Digital in Canberra (the person who had
organised a beta test of eXcursion) and asked if I could distribute
what I'd done, or was it illegal. It was then that I first heard the
word "netbios" when he told me that he thought it was all covered by a
spec of some sort (the netbios spec) and thus what I'd done was not
only legal, but silly.

I found the netbios spec after asking around a bit (the RFC1001 and
RFC1002 specs) and found they looked nothing like what I'd written, so
I thought maybe the Digital person was mistaken. I didn't realise RFCs
referred to the name negotiation and packet encapsulation over TCP/IP,
and what I'd written was really a SMB implementation.

Anyway, he encouraged me to release it so I put out "Server 0.1" in
January 1992. I got quite a good response from people wanting to use
pathworks with non-digital unix workstations, and I soon fixed a few
bugs, and released "Server 0.5" closely followed by "Server 1.0". All
three releases came out within about a month of each other.

At this point I got an X Terminal on my desk, and I no longer needed eXcursion
and I prompty forgot about the whole project, apart from a few people
who e-mailed me occasionally about it.

Nearly two years then passed with just occasional e-mails asking about
new versions and bugs. I even added a note to the ftp site asking for
a volunteer to take over the code as I no longer used it. No one
volunteered.

During this time I did hear from a couple of people who said it should
be possible to use my code with Lanmanager, but I never got any
definite confirmation.

One e-mail I got about the code did, however, make an impression. It
was from Dan Shearer at the university of South Australia, and he said
this:


    I heard a hint about a free Pathworks server for Unix in the
    Net channel of the Linux list. After quite a bit of chasing
    (and lots of interested followups from other Linux people) I
    got hold of a release news article from you, posted in Jan 92,
    from someone in the UK.

    Can you tell me what the latest status is? I think you might
    suddenly find a whole lot of interested hackers in the Linux
    world at least, which is a place where things tend to happen
    fast (and even some reliable code gets written, BION!)

I asked him what Linux was, and he told me it was a free Unix for PCs.
This was in November 1992 and a few months later I was a Linux
convert! I still didn't need a pathworks server though, so I didn't do
the port, but I think Dan did.

At about this time I got an e-mail from Digital, from a person working
on the Alpha software distribution. He asked if I would mind if they
included my server with the "contributed" cd-rom. This was a bit of a
shock to me as I never expected Dec to ask me if they could use my
code! I wrote back saying it was OK, but never heard from him again. I
don't know if it went on the cd-rom.

Anyway, the next big event was in December 1993, when Dan again sent
me an e-mail saying my server had "raised it's ugly head" on
comp.protocols.tcpip.ibmpc. I had a quick look on the group, and was
surprised to see that there were people interested in this thing.

At this time a person from our computer center offered me a couple of
cheap ethernet cards (3c505s for $15 each) and coincidentially someone
announced on one of the Linux channels that he had written a 3c505
driver for Linux. I bought the cards, hacked the driver a little and
setup a home network between my wifes PC and my Linux box. I then
needed some way to connect the two, and I didn't own PC-NFS at home,
so I thought maybe my server could be useful. On the newsgroup among
the discussions of my server someone had mentioned that there was a
free client that might work with my server that Microsoft had put up
for ftp. I downloaded it and found to my surprise that it worked first
time with my `pathworks' server!

Well, I then did a bit of hacking, asked around a bit and found (I
think from Dan) that the spec I needed was for the "SMB" protocol, and
that it was available via ftp. I grabbed it and started removing all
those ugly constants from the code, now that all was explained.

On December 1st 1993 I announced the start of the "Netbios for Unix"
project, seeding the mailing list with all the people who had e-mailed
me over the years asking about the server.

About 35 versions (and two months) later I wrote a short history of
the project, which you have just read. There are now over a hundred
people on the mailing list, and lots of people report that they use
the code and like it. In a few days I will be announcing the release
of version 1.6 to some of the more popular (and relevant) newsgroups.


Andrew Tridgell
6th February 1994