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The "wildcard" DLZ module provides a "template" zone for domains matching
a wildcard name. For example, the following DLZ configuration would match
any zone name containing the string "example" and ending with .com, such
as "thisexample.com", "exampleofthat.com", or "anexampleoftheotherthing.com".
dlz "test" {
database "dlopen ../dlz_wildcard_dynamic.so
*example*.com 10.53.* 1800
@ 3600 SOA {ns3.example.nil. support.example.nil. 42 14400 7200 2592000 600}
@ 3600 NS ns3.example.nil.
@ 3600 NS ns4.example.nil.
@ 3600 NS ns8.example.nil.
@ 3600 MX {5 mail.example.nil.}
ftp 86400 A 192.0.0.1
sql 86400 A 192.0.0.2
tmp {} A 192.0.0.3
www 86400 A 192.0.0.3
www 86400 AAAA ::1
txt 300 TXT {\"you requested $record$ in $zone$\"}
* 86400 A 192.0.0.100";
};
For any zone name matching the wildcard, it would return the data from
the template. "$zone$" is replaced with zone name: i.e., the shortest
possible string of labels in the query name that matches the wildcard.
"$record$" is replaced with the remainder of the query name. In the
example above, a query for "txt.thisexample.com/TXT" would return the
string "you requested txt in thisexample.com".
Any client whose source address matches the second wildcard ("10.53.*")
is allowed to request a zone transfer.
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