[Pdns-users] PDNS + MySQL results not un-escaped?

Norbert Sendetzky norbert at linuxnetworks.de
Wed Jan 6 08:56:08 UTC 2010

Hi Michael

> When I enter a DKIM or Domain Keys record, which requires use of ';', the
> records on the secondary name server have this character escaped with '\',
>  as to be expected.
> As this character has a special meaning in MySQL I would think the simple
> answer would be to unescape it prior to returning the RR.

This is a common misunderstanding of web developers that escaping in MySQL is 
done by adding backslashes. Instead, escaping is done by calling 
mysql_real_escape(), which prepares the string to be save when storing it to 
the database but when fetching the string again, it will be the same as before 
calling mysql_real_escape(). Therefore, if a web application adds backslashes 
it corrupts the record and this has to be considered as bug of the web 

OpenPGP public key

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