1 files changed, 149 insertions, 0 deletions
diff --git a/lib/dnspython/dns/rdtypes/keybase.py b/lib/dnspython/dns/rdtypes/keybase.py
new file mode 100644
index 0000000000..75c9272670
--- /dev/null
+++ b/lib/dnspython/dns/rdtypes/keybase.py
@@ -0,0 +1,149 @@
+# Copyright (C) 2004-2007, 2009, 2010 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.exception
+import dns.dnssec
+import dns.rdata
+
+_flags_from_text = {
+    'NOCONF': (0x4000, 0xC000),
+    'NOAUTH': (0x8000, 0xC000),
+    'NOKEY': (0xC000, 0xC000),
+    'FLAG2': (0x2000, 0x2000),
+    'EXTEND': (0x1000, 0x1000),
+    'FLAG4': (0x0800, 0x0800),
+    'FLAG5': (0x0400, 0x0400),
+    'USER': (0x0000, 0x0300),
+    'ZONE': (0x0100, 0x0300),
+    'HOST': (0x0200, 0x0300),
+    'NTYP3': (0x0300, 0x0300),
+    'FLAG8': (0x0080, 0x0080),
+    'FLAG9': (0x0040, 0x0040),
+    'FLAG10': (0x0020, 0x0020),
+    'FLAG11': (0x0010, 0x0010),
+    'SIG0': (0x0000, 0x000f),
+    'SIG1': (0x0001, 0x000f),
+    'SIG2': (0x0002, 0x000f),
+    'SIG3': (0x0003, 0x000f),
+    'SIG4': (0x0004, 0x000f),
+    'SIG5': (0x0005, 0x000f),
+    'SIG6': (0x0006, 0x000f),
+    'SIG7': (0x0007, 0x000f),
+    'SIG8': (0x0008, 0x000f),
+    'SIG9': (0x0009, 0x000f),
+    'SIG10': (0x000a, 0x000f),
+    'SIG11': (0x000b, 0x000f),
+    'SIG12': (0x000c, 0x000f),
+    'SIG13': (0x000d, 0x000f),
+    'SIG14': (0x000e, 0x000f),
+    'SIG15': (0x000f, 0x000f),
+    }
+
+_protocol_from_text = {
+    'NONE' : 0,
+    'TLS' : 1,
+    'EMAIL' : 2,
+    'DNSSEC' : 3,
+    'IPSEC' : 4,
+    'ALL' : 255,
+    }
+
+class KEYBase(dns.rdata.Rdata):
+    """KEY-like record base
+
+    @ivar flags: the key flags
+    @type flags: int
+    @ivar protocol: the protocol for which this key may be used
+    @type protocol: int
+    @ivar algorithm: the algorithm used for the key
+    @type algorithm: int
+    @ivar key: the public key
+    @type key: string"""
+
+    __slots__ = ['flags', 'protocol', 'algorithm', 'key']
+
+    def __init__(self, rdclass, rdtype, flags, protocol, algorithm, key):
+        super(KEYBase, self).__init__(rdclass, rdtype)
+        self.flags = flags
+        self.protocol = protocol
+        self.algorithm = algorithm
+        self.key = key
+
+    def to_text(self, origin=None, relativize=True, **kw):
+        return '%d %d %d %s' % (self.flags, self.protocol, self.algorithm,
+                                dns.rdata._base64ify(self.key))
+
+    def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
+        flags = tok.get_string()
+        if flags.isdigit():
+            flags = int(flags)
+        else:
+            flag_names = flags.split('|')
+            flags = 0
+            for flag in flag_names:
+                v = _flags_from_text.get(flag)
+                if v is None:
+                    raise dns.exception.SyntaxError('unknown flag %s' % flag)
+                flags &= ~v[1]
+                flags |= v[0]
+        protocol = tok.get_string()
+        if protocol.isdigit():
+            protocol = int(protocol)
+        else:
+            protocol = _protocol_from_text.get(protocol)
+            if protocol is None:
+                raise dns.exception.SyntaxError('unknown protocol %s' % protocol)
+
+        algorithm = dns.dnssec.algorithm_from_text(tok.get_string())
+        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)
+        key = b64.decode('base64_codec')
+        return cls(rdclass, rdtype, flags, protocol, algorithm, key)
+
+    from_text = classmethod(from_text)
+
+    def to_wire(self, file, compress = None, origin = None):
+        header = struct.pack("!HBB", self.flags, self.protocol, self.algorithm)
+        file.write(header)
+        file.write(self.key)
+
+    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
+        if rdlen < 4:
+            raise dns.exception.FormError
+        header = struct.unpack('!HBB', wire[current : current + 4])
+        current += 4
+        rdlen -= 4
+        key = wire[current : current + rdlen]
+        return cls(rdclass, rdtype, header[0], header[1], header[2],
+                   key)
+
+    from_wire = classmethod(from_wire)
+
+    def _cmp(self, other):
+        hs = struct.pack("!HBB", self.flags, self.protocol, self.algorithm)
+        ho = struct.pack("!HBB", other.flags, other.protocol, other.algorithm)
+        v = cmp(hs, ho)
+        if v == 0:
+            v = cmp(self.key, other.key)
+        return v