In the last episode (Apr 01), John Polstra said:
> In article <[email protected]>, Nickolay Dudorov <[email protected]>
> wrote:
> > There is some strangenes in date on file
> > ftp://ftp.freebsd.org/pub/FreeBSD/development/CTM/cvs-cur/cvs-cur.5198.gz
> >
> > -r--r--r- 1 603 207 49741 apr 1 1998 cvs-cur.5198.gz
>
> I changed the subject because I think this may actually be a real bug
> somewhere. I happened to notice 2 days ago that some of the files in
> etinc's download area had dates exactly one year too old in this same
> way. I mentioned it to Dennis there, and he told me that the files
> had been created by a 2.2.7 machine onto a directory mounted via NFS
> from a 3.1 machine. The dates are set correctly on both machines,
> but the problem is reproduceable there.
>
> I haven't been able to duplicate it myself, but I suspect that it's a
> real bug. If anybody else is seeing similar problems, please speak
> up.
I've seen this too, on other FTP servers. I doubt it's an NFS problem,
since there is no reason for NFS to add/subtract exactly one year from
the date.
FTP, on the other hand, doesn't have a standard way of passing a date
to the client (MDTM isn't always implemented). I can imagine an FTP
client (especially NcFTP which parses the LIST command itself) getting
confused about a file that was created a couple hours in the "future" ,
due to the fact that FTP servers work in the local timezone, but FTP
client's cant easily determine the timezone of the server.
aha! I just tested this, with stock 3.1 /usr/bin/ftp and with
NcFTP3.0b18. I touched a file with a date four hours into the future,
connected to my FTP server, and tried to list it:
ftp> dir asdf
200 PORT command successful.
150 Opening ASCII mode data connection for /bin/ls.
-rw-rw-r-- 1 dan 1000 0 Apr 1 22:00 asdf
226 Transfer complete.
ftp>
ncftp /pub > dir asdf
-rw-rw-r-- 1 dan 1000 0 Apr 1 1998 asdf
ncftp /pub >
So I'd say it's a bug in NcFTP's date parser. I'm willing to bet that
Nickolay is also using NcFTP, since the 'group' column in his 'ls'
output is right-justified, just like my ncftp output sample :)
-Dan Nelson
[email protected]
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