From: Daniel Salzman <daniel.salzman@nic.cz>
Date: Wed, 25 Nov 2020 12:05:29 +0000 (+0100)
Subject: TSIG: don't relativize algorithm name
X-Git-Tag: v2.1.0~12^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F609%2Fhead;p=thirdparty%2Fdnspython.git

TSIG: don't relativize algorithm name

The domain name relativization of TSIG's algorithm name breaks TSIG validation
when using with the Root zone.

Example for algorithm hmac-sha224:

zone 'example.com.' -> hmac-sha224.
zone '.'            -> hmac-sha224
---

diff --git a/dns/rdtypes/ANY/TSIG.py b/dns/rdtypes/ANY/TSIG.py
index 54621957..b43a78f1 100644
--- a/dns/rdtypes/ANY/TSIG.py
+++ b/dns/rdtypes/ANY/TSIG.py
@@ -110,7 +110,7 @@ class TSIG(dns.rdata.Rdata):
 
     @classmethod
     def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
-        algorithm = parser.get_name(origin)
+        algorithm = parser.get_name()
         time_signed = parser.get_uint48()
         fudge = parser.get_uint16()
         mac = parser.get_counted_bytes(2)