1 files changed, 140 insertions, 0 deletions
diff --git a/third_party/dnspython/dns/rdtypes/ANY/HIP.py b/third_party/dnspython/dns/rdtypes/ANY/HIP.py
new file mode 100644
index 0000000000..968b36f5e2
--- /dev/null
+++ b/third_party/dnspython/dns/rdtypes/ANY/HIP.py
@@ -0,0 +1,140 @@
+# Copyright (C) 2010, 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 string
+import struct
+
+import dns.exception
+import dns.rdata
+import dns.rdatatype
+
+class HIP(dns.rdata.Rdata):
+    """HIP record
+
+    @ivar hit: the host identity tag
+    @type hit: string
+    @ivar algorithm: the public key cryptographic algorithm
+    @type algorithm: int
+    @ivar key: the public key
+    @type key: string
+    @ivar servers: the rendezvous servers
+    @type servers: list of dns.name.Name objects
+    @see: RFC 5205"""
+
+    __slots__ = ['hit', 'algorithm', 'key', 'servers']
+
+    def __init__(self, rdclass, rdtype, hit, algorithm, key, servers):
+        super(HIP, self).__init__(rdclass, rdtype)
+        self.hit = hit
+        self.algorithm = algorithm
+        self.key = key
+        self.servers = servers
+
+    def to_text(self, origin=None, relativize=True, **kw):
+        hit = self.hit.encode('hex-codec')
+        key = self.key.encode('base64-codec').replace('\n', '')
+        text = ''
+        servers = []
+        for server in self.servers:
+            servers.append(str(server.choose_relativity(origin, relativize)))
+        if len(servers) > 0:
+            text += (' ' + ' '.join(servers))
+        return '%u %s %s%s' % (self.algorithm, hit, key, text)
+
+    def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
+        algorithm = tok.get_uint8()
+        hit = tok.get_string().decode('hex-codec')
+        if len(hit) > 255:
+            raise dns.exception.SyntaxError("HIT too long")
+        key = tok.get_string().decode('base64-codec')
+        servers = []
+        while 1:
+            token = tok.get()
+            if token.is_eol_or_eof():
+                break
+            server = dns.name.from_text(token.value, origin)
+            server.choose_relativity(origin, relativize)
+            servers.append(server)
+        return cls(rdclass, rdtype, hit, algorithm, key, servers)
+
+    from_text = classmethod(from_text)
+
+    def to_wire(self, file, compress = None, origin = None):
+        lh = len(self.hit)
+        lk = len(self.key)
+        file.write(struct.pack("!BBH", lh, self.algorithm, lk))
+        file.write(self.hit)
+        file.write(self.key)
+        for server in self.servers:
+            server.to_wire(file, None, origin)
+
+    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
+        (lh, algorithm, lk) = struct.unpack('!BBH',
+                                            wire[current : current + 4])
+        current += 4
+        rdlen -= 4
+        hit = wire[current : current + lh].unwrap()
+        current += lh
+        rdlen -= lh
+        key = wire[current : current + lk].unwrap()
+        current += lk
+        rdlen -= lk
+        servers = []
+        while rdlen > 0:
+            (server, cused) = dns.name.from_wire(wire[: current + rdlen],
+                                                 current)
+            current += cused
+            rdlen -= cused
+            if not origin is None:
+                server = server.relativize(origin)
+            servers.append(server)
+        return cls(rdclass, rdtype, hit, algorithm, key, servers)
+
+    from_wire = classmethod(from_wire)
+
+    def choose_relativity(self, origin = None, relativize = True):
+        servers = []
+        for server in self.servers:
+            server = server.choose_relativity(origin, relativize)
+            servers.append(server)
+        self.servers = servers
+
+    def _cmp(self, other):
+        b1 = cStringIO.StringIO()
+        lh = len(self.hit)
+        lk = len(self.key)
+        b1.write(struct.pack("!BBH", lh, self.algorithm, lk))
+        b1.write(self.hit)
+        b1.write(self.key)
+        b2 = cStringIO.StringIO()
+        lh = len(other.hit)
+        lk = len(other.key)
+        b2.write(struct.pack("!BBH", lh, other.algorithm, lk))
+        b2.write(other.hit)
+        b2.write(other.key)
+        v = cmp(b1.getvalue(), b2.getvalue())
+        if v != 0:
+            return v
+        ls = len(self.servers)
+        lo = len(other.servers)
+        count = min(ls, lo)
+        i = 0
+        while i < count:
+            v = cmp(self.servers[i], other.servers[i])
+            if v != 0:
+                return v
+            i += 1
+        return ls - lo