[Pam-mysql-general] Username escaping problem

[Julien E. <pan...@az...>]

Hello,
I'm trying to auth users based on their domain name. In my database, 
domains are separated in two fields, one for domain and one for tld.
So I use this for username :
usercolumn=CONCAT(domaines.domaine,'.',domaines.tld)
But mysql_escape_string() replace the ' by \' so the request made to 
MySQL ins't correct :
cat /var/log/auth.log
Sep 13 09:41:55 ron login[10400]: pam_mysql - SELECT 1, pass FROM 
domaines WHERE CONCAT(domaines.domaine,\'.\',domaines.tld)
Sep 13 09:41:55 ron login[10400]: pam_mysql - MySQL error (You have an 
error in your SQL syntax.  Check the manual that corresponds to your 
MySQL server version for the right syntax to use near 
'\'.\',domaines.tld) = 'asylog'' at line 1)

I tried to comment the lines calling mysql_escape_string() in 
pam_mysql_quick_escape() but I have a seg fault (probably due to the 
lack of \0 at end of the char).
How may I do this ?

Thanks,
Julien Escario