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Re: Fixed issue "Error Message is displayed when the Package is Clicked"

From: Dave Page <dpage(at)pgadmin(dot)org>
To: Ashesh Vashi <ashesh(dot)vashi(at)enterprisedb(dot)com>
Cc: Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com>, pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org>
Subject: Re: Fixed issue "Error Message is displayed when the Package is Clicked"
Date: 2012-03-20 08:37:29
Message-ID: CA+OCxozioqnM7UuixPzTxoRiYQ8YhXeDdKSr0YsdEr=KmVaMEg@mail.gmail.com (view raw or flat)
Thread:
Lists: pgadmin-hackers
On Tue, Mar 20, 2012 at 7:35 AM, Ashesh Vashi
<ashesh(dot)vashi(at)enterprisedb(dot)com> wrote:
> Reason for the error:
>
> REL-9_1_STABLE branch (PostgreSQL repository):
>
> commit 303696c3b47e6719e983e93da5896ddc4a2e0dbb
> Author: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
> Date:   Fri Sep 3 01:34:55 2010 +0000
>
>     Install a data-type-based solution for protecting pg_get_expr().
>
>     Since the code underlying pg_get_expr() is not secure against malformed
>     input, and can't practically be made so, we need to prevent miscreants
>     from feeding arbitrary data to it.  We can do this securely by declaring
>     pg_get_expr() to take a new datatype "pg_node_tree" and declaring the
>     system catalog columns that hold nodeToString output to be of that type.
>     There is no way at SQL level to create a non-null value of type
> pg_node_tree.
>     Since the backend-internal operations that fill those catalog columns
>     operate below the SQL level, they are oblivious to the datatype
> relabeling
>     and don't need any changes.

Oh yeah, I vaguely remember that. Surely that wasn't back ported to
9.0 though? Akshay said he sees the issue there as well (which I
don't).


-- 
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

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