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From: Gregory Stark <stark@enterprisedb.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Oleg Bartunov <oleg@sai.msu.su>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: tsearch filenames unlikes special symbols and numbers
Date: Mon, 03 Sep 2007 07:47:14 +0100
Message-ID: <87tzqci6tp.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <19257.1188777110@sss.pgh.pa.us>
References: <162867790709021328i7771aa9jfe79268bccbf123d@mail.gmail.com>
	<Pine.LNX.4.64.0709030113090.2767@sn.sai.msu.ru>
	<18259.1188773171@sss.pgh.pa.us>
	<87y7foir7t.fsf@oxford.xeocode.com>
	<19257.1188777110@sss.pgh.pa.us>

"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> Gregory Stark <stark@enterprisedb.com> writes:
>> "Tom Lane" <tgl@sss.pgh.pa.us> writes:
>>> I made it reject all but latin letters, which is the same restriction
>>> that's in place for timezone set filenames.  That might be overly
>>> strong, but we definitely have to forbid "." and "/" (and "\" on
>>> Windows).  Do we want to restrict it to letters, digits, underscore?
>>> Or does it need to be weaker than that?
>
>> What's the problem with "."?
>
> ../../../../etc/passwd
>
> Possibly we could allow '.' as long as we forbade /, 

Right, traditionally the only characters forbidden in filenames in Unix are /
and nul. If we want the files to play nice in Gnome etc then we should
restrict them to ascii since we don't know what encoding the gui expects. 

Actually I think in Windows \ : and . are problems (not allowed more than one
dot in dos).

> There's a reasonable argument for restricting the names used for these
> things in the SQL definitions to be valid SQL identifiers, so that that
> will work nicely...

Ah

-- 
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com



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