Re: utf8 encoding problem with plperlu

From: Ronald Peterson <ron(at)hub(dot)yellowbank(dot)com>
To: Daniel Verite <daniel(at)manitou-mail(dot)org>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: utf8 encoding problem with plperlu
Date: 2015-07-15 18:20:09
Message-ID: CAJPRK8ZiJf1vVDZLb3QCNiN9nu3rciTK5nbTohNQ4qP9EVFP4A@mail.gmail.com
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That's interesting. What I'm really doing, instead of the second elog
statement, is this:

$ret = $ldap->modify( $dn,
replace => {
unicodePwd => $mspass
} );

This does work for strings that don't contain consecutive zeroes. I'm not
really passing the string to PostgreSQL, but to Net::LDAP, but it must hit
PostgreSQL anyway? Active Directory requires this encoding, so I'm not
sure what to do here.

On Wed, Jul 15, 2015 at 11:57 AM, Daniel Verite <daniel(at)manitou-mail(dot)org>
wrote:

> Ronald Peterson wrote:
>
> > # select * from doublezero();
> > INFO: double00
> > CONTEXT: PL/Perl function "doublezero"
> > ERROR: invalid byte sequence for encoding "UTF8": 0x00 at line 8, <DATA>
> > line 558.
> > CONTEXT: PL/Perl function "doublezero"
> >
> > I don't understand this. I need to pass $mspass to Active Directory,
> and it
> > the encoding is exactly as it should be, which is to say, it works for
> > strings that don't include two consecutive zeros. Is this a bug?
>
> When replacing the literal "double00" with "foobar" in your function,
> the same error occurs for me:
>
> test=# select doublezero();
> INFO: foobar
> CONTEXT: PL/Perl function "doublezero"
> ERROR: invalid byte sequence for encoding "UTF8": 0x00 at line 6.
> CONTEXT: fonction PL/Perl « doublezero »
>
> Anyway it's not clear what you expect. PG doesn't support UTF-16,
> and even if it did, it wouldn't accept such strings when the current
> encoding is UTF-8.
> If Active Directory wants UTF-16LE, you have to do that conversion, but
> don't pass the result back to postgres in this format.
>
>
> Best regards,
> --
> Daniel
> PostgreSQL-powered mail user agent and storage:
> http://www.manitou-mail.org
>

--
-R-

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