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Add TLSA (RFC 6698) record type

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1 parent b05d560 commit eb42ba9f64a6d099f2c92cc5d72515a78d857bb0 @pieterlexis pieterlexis committed Sep 17, 2012
Showing with 102 additions and 0 deletions.
  1. +2 −0 dns/rdatatype.py
  2. +89 −0 dns/rdtypes/ANY/TLSA.py
  3. +1 −0 dns/rdtypes/ANY/__init__.py
  4. +3 −0 tests/example
  5. +3 −0 tests/example1.good
  6. +3 −0 tests/example2.good
  7. +1 −0 util/copyrights
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@@ -78,6 +78,7 @@
DHCID = 49
NSEC3 = 50
NSEC3PARAM = 51
+TLSA = 52
HIP = 55
SPF = 99
UNSPEC = 103
@@ -140,6 +141,7 @@
'DHCID' : DHCID,
'NSEC3' : NSEC3,
'NSEC3PARAM' : NSEC3PARAM,
+ 'TLSA' : TLSA,
'HIP' : HIP,
'SPF' : SPF,
'UNSPEC' : UNSPEC,
View
@@ -0,0 +1,89 @@
+# Copyright (C) 2005-2007, 2009-2011 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import struct
+
+import dns.rdata
+import dns.rdatatype
+
+class TLSA(dns.rdata.Rdata):
+ """TLSA record
+
+ @ivar usage: The certificate usage
+ @type usage: int
+ @ivar selector: The selector field
+ @type selector: int
+ @ivar mtype: The 'matching type' field
+ @type mtype: int
+ @ivar cert: The 'Certificate Association Data' field
+ @type cert: string
+ @see: RFC 6698"""
+
+ __slots__ = ['usage', 'selector', 'mtype', 'cert']
+
+ def __init__(self, rdclass, rdtype, usage, selector,
+ mtype, cert):
+ super(TLSA, self).__init__(rdclass, rdtype)
+ self.usage = usage
+ self.selector = selector
+ self.mtype = mtype
+ self.cert = cert
+
+ def to_text(self, origin=None, relativize=True, **kw):
+ return '%d %d %d %s' % (self.usage,
+ self.selector,
+ self.mtype,
+ dns.rdata._hexify(self.cert,
+ chunksize=128))
+
+ def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
+ usage = tok.get_uint8()
+ selector = tok.get_uint8()
+ mtype = tok.get_uint8()
+ cert_chunks = []
+ while 1:
+ t = tok.get().unescape()
+ if t.is_eol_or_eof():
+ break
+ if not t.is_identifier():
+ raise dns.exception.SyntaxError
+ cert_chunks.append(t.value)
+ cert = ''.join(cert_chunks)
+ cert = cert.decode('hex_codec')
+ return cls(rdclass, rdtype, usage, selector, mtype, cert)
+
+ from_text = classmethod(from_text)
+
+ def to_wire(self, file, compress = None, origin = None):
+ header = struct.pack("!BBB", self.usage, self.selector, self.mtype)
+ file.write(header)
+ file.write(self.cert)
+
+ def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
+ header = struct.unpack("!BBB", wire[current : current + 3])
+ current += 3
+ rdlen -= 3
+ cert = wire[current : current + rdlen].unwrap()
+ return cls(rdclass, rdtype, header[0], header[1], header[2], cert)
+
+ from_wire = classmethod(from_wire)
+
+ def _cmp(self, other):
+ hs = struct.pack("!BBB", self.usage, self.selector, self.mtype)
+ ho = struct.pack("!BBB", other.usage, other.selector, other.mtype)
+ v = cmp(hs, ho)
+ if v == 0:
+ v = cmp(self.cert, other.cert)
+ return v
@@ -33,6 +33,7 @@
'NSEC',
'NSEC3',
'NSEC3PARAM',
+ 'TLSA',
'PTR',
'RP',
'RRSIG',
View
@@ -165,6 +165,9 @@ srv02 SRV 65535 65535 65535 old-slow-box.example.com.
$TTL 301 ; 5 minutes 1 second
t A 73.80.65.49
$TTL 3600 ; 1 hour
+tlsa1 TLSA 3 1 1 a9cdf989b504fe5dca90c0d2167b6550570734f7c763e09fdf88904e06157065
+tlsa2 TLSA 1 0 1 efddf0d915c7bdc5782c0881e1b2a95ad099fbdd06d7b1f77982d9364338d955
+tlsa3 TLSA 1 0 2 81ee7f6c0ecc6b09b7785a9418f54432de630dd54dc6ee9e3c49de547708d236d4c413c3e97e44f969e635958aa410495844127c04883503e5b024cf7a8f6a94
txt01 TXT "foo"
txt02 TXT "foo" "bar"
txt03 TXT "foo"
View
@@ -90,6 +90,9 @@ srv01 3600 IN SRV 0 0 0 .
srv02 3600 IN SRV 65535 65535 65535 old-slow-box.example.com.
sshfp1 3600 IN SSHFP 1 1 aa549bfe898489c02d1715d97d79c57ba2fa76ab
t 301 IN A 73.80.65.49
+tlsa1 3600 IN TLSA 3 1 1 a9cdf989b504fe5dca90c0d2167b6550570734f7c763e09fdf88904e06157065
+tlsa2 3600 IN TLSA 1 0 1 efddf0d915c7bdc5782c0881e1b2a95ad099fbdd06d7b1f77982d9364338d955
+tlsa3 3600 IN TLSA 1 0 2 81ee7f6c0ecc6b09b7785a9418f54432de630dd54dc6ee9e3c49de547708d236d4c413c3e97e44f969e635958aa410495844127c04883503e5b024cf7a8f6a94
txt01 3600 IN TXT "foo"
txt02 3600 IN TXT "foo" "bar"
txt03 3600 IN TXT "foo"
View
@@ -90,6 +90,9 @@ srv01.example. 3600 IN SRV 0 0 0 .
srv02.example. 3600 IN SRV 65535 65535 65535 old-slow-box.example.com.
sshfp1.example. 3600 IN SSHFP 1 1 aa549bfe898489c02d1715d97d79c57ba2fa76ab
t.example. 301 IN A 73.80.65.49
+tlsa1.example. 3600 IN TLSA 3 1 1 a9cdf989b504fe5dca90c0d2167b6550570734f7c763e09fdf88904e06157065
+tlsa2.example. 3600 IN TLSA 1 0 1 efddf0d915c7bdc5782c0881e1b2a95ad099fbdd06d7b1f77982d9364338d955
+tlsa3.example. 3600 IN TLSA 1 0 2 81ee7f6c0ecc6b09b7785a9418f54432de630dd54dc6ee9e3c49de547708d236d4c413c3e97e44f969e635958aa410495844127c04883503e5b024cf7a8f6a94
txt01.example. 3600 IN TXT "foo"
txt02.example. 3600 IN TXT "foo" "bar"
txt03.example. 3600 IN TXT "foo"
View
@@ -51,6 +51,7 @@
./dns/rdtypes/ANY/SOA.py PYTHON 2003,2004,2005,2006,2007,2009,2010,2011
./dns/rdtypes/ANY/SPF.py PYTHON 2006,2007,2009,2010,2011
./dns/rdtypes/ANY/SSHFP.py PYTHON 2005,2006,2007,2009,2010,2011
+./dns/rdtypes/ANY/TLSA.py PYTHON 2012
./dns/rdtypes/ANY/TXT.py PYTHON 2003,2004,2005,2006,2007,2009,2010,2011
./dns/rdtypes/ANY/X25.py PYTHON 2003,2004,2005,2006,2007,2009,2010,2011
./dns/rdtypes/ANY/__init__.py PYTHON 2003,2004,2005,2006,2007,2009,2010,2011

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