1 files changed, 131 insertions, 0 deletions
diff --git a/third_party/dnspython/dns/rdtypes/ANY/CERT.py b/third_party/dnspython/dns/rdtypes/ANY/CERT.py
new file mode 100644
index 0000000000..c102521a14
--- /dev/null
+++ b/third_party/dnspython/dns/rdtypes/ANY/CERT.py
@@ -0,0 +1,131 @@
+# Copyright (C) 2003-2007, 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 cStringIO
+import struct
+
+import dns.exception
+import dns.dnssec
+import dns.rdata
+import dns.tokenizer
+
+_ctype_by_value = {
+    1 : 'PKIX',
+    2 : 'SPKI',
+    3 : 'PGP',
+    253 : 'URI',
+    254 : 'OID',
+    }
+
+_ctype_by_name = {
+    'PKIX' : 1,
+    'SPKI' : 2,
+    'PGP' : 3,
+    'URI' : 253,
+    'OID' : 254,
+    }
+
+def _ctype_from_text(what):
+    v = _ctype_by_name.get(what)
+    if not v is None:
+        return v
+    return int(what)
+
+def _ctype_to_text(what):
+    v = _ctype_by_value.get(what)
+    if not v is None:
+        return v
+    return str(what)
+
+class CERT(dns.rdata.Rdata):
+    """CERT record
+
+    @ivar certificate_type: certificate type
+    @type certificate_type: int
+    @ivar key_tag: key tag
+    @type key_tag: int
+    @ivar algorithm: algorithm
+    @type algorithm: int
+    @ivar certificate: the certificate or CRL
+    @type certificate: string
+    @see: RFC 2538"""
+
+    __slots__ = ['certificate_type', 'key_tag', 'algorithm', 'certificate']
+
+    def __init__(self, rdclass, rdtype, certificate_type, key_tag, algorithm,
+                 certificate):
+        super(CERT, self).__init__(rdclass, rdtype)
+        self.certificate_type = certificate_type
+        self.key_tag = key_tag
+        self.algorithm = algorithm
+        self.certificate = certificate
+
+    def to_text(self, origin=None, relativize=True, **kw):
+        certificate_type = _ctype_to_text(self.certificate_type)
+        return "%s %d %s %s" % (certificate_type, self.key_tag,
+                                dns.dnssec.algorithm_to_text(self.algorithm),
+                                dns.rdata._base64ify(self.certificate))
+
+    def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
+        certificate_type = _ctype_from_text(tok.get_string())
+        key_tag = tok.get_uint16()
+        algorithm = dns.dnssec.algorithm_from_text(tok.get_string())
+        if algorithm < 0 or algorithm > 255:
+            raise dns.exception.SyntaxError("bad algorithm type")
+        chunks = []
+        while 1:
+            t = tok.get().unescape()
+            if t.is_eol_or_eof():
+                break
+            if not t.is_identifier():
+                raise dns.exception.SyntaxError
+            chunks.append(t.value)
+        b64 = ''.join(chunks)
+        certificate = b64.decode('base64_codec')
+        return cls(rdclass, rdtype, certificate_type, key_tag,
+                   algorithm, certificate)
+
+    from_text = classmethod(from_text)
+
+    def to_wire(self, file, compress = None, origin = None):
+        prefix = struct.pack("!HHB", self.certificate_type, self.key_tag,
+                             self.algorithm)
+        file.write(prefix)
+        file.write(self.certificate)
+
+    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
+        prefix = wire[current : current + 5].unwrap()
+        current += 5
+        rdlen -= 5
+        if rdlen < 0:
+            raise dns.exception.FormError
+        (certificate_type, key_tag, algorithm) = struct.unpack("!HHB", prefix)
+        certificate = wire[current : current + rdlen].unwrap()
+        return cls(rdclass, rdtype, certificate_type, key_tag, algorithm,
+                   certificate)
+
+    from_wire = classmethod(from_wire)
+
+    def _cmp(self, other):
+        f = cStringIO.StringIO()
+        self.to_wire(f)
+        wire1 = f.getvalue()
+        f.seek(0)
+        f.truncate()
+        other.to_wire(f)
+        wire2 = f.getvalue()
+        f.close()
+
+        return cmp(wire1, wire2)