s4-python: import a copy of the python dns library

[idra/samba.git] / source4 / scripting / python / samba_external / dnspython / dns / rdtypes / IN / PX.py

diff --git a/source4/scripting/python/samba_external/dnspython/dns/rdtypes/IN/PX.py b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/IN/PX.py
new file mode 100644 (file)
index 0000000..4718944
--- /dev/null
+++ b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/IN/PX.py
@@ -0,0 +1,97 @@
+# Copyright (C) 2003-2007, 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.rdata
+import dns.name
+
+class PX(dns.rdata.Rdata):
+    """PX record.
+
+    @ivar preference: the preference value
+    @type preference: int
+    @ivar map822: the map822 name
+    @type map822: dns.name.Name object
+    @ivar mapx400: the mapx400 name
+    @type mapx400: dns.name.Name object
+    @see: RFC 2163"""
+
+    __slots__ = ['preference', 'map822', 'mapx400']
+
+    def __init__(self, rdclass, rdtype, preference, map822, mapx400):
+        super(PX, self).__init__(rdclass, rdtype)
+        self.preference = preference
+        self.map822 = map822
+        self.mapx400 = mapx400
+
+    def to_text(self, origin=None, relativize=True, **kw):
+        map822 = self.map822.choose_relativity(origin, relativize)
+        mapx400 = self.mapx400.choose_relativity(origin, relativize)
+        return '%d %s %s' % (self.preference, map822, mapx400)
+
+    def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
+        preference = tok.get_uint16()
+        map822 = tok.get_name()
+        map822 = map822.choose_relativity(origin, relativize)
+        mapx400 = tok.get_name(None)
+        mapx400 = mapx400.choose_relativity(origin, relativize)
+        tok.get_eol()
+        return cls(rdclass, rdtype, preference, map822, mapx400)
+
+    from_text = classmethod(from_text)
+
+    def to_wire(self, file, compress = None, origin = None):
+        pref = struct.pack("!H", self.preference)
+        file.write(pref)
+        self.map822.to_wire(file, None, origin)
+        self.mapx400.to_wire(file, None, origin)
+
+    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
+        (preference, ) = struct.unpack('!H', wire[current : current + 2])
+        current += 2
+        rdlen -= 2
+        (map822, cused) = dns.name.from_wire(wire[: current + rdlen],
+                                               current)
+        if cused > rdlen:
+            raise dns.exception.FormError
+        current += cused
+        rdlen -= cused
+        if not origin is None:
+            map822 = map822.relativize(origin)
+        (mapx400, cused) = dns.name.from_wire(wire[: current + rdlen],
+                                              current)
+        if cused != rdlen:
+            raise dns.exception.FormError
+        if not origin is None:
+            mapx400 = mapx400.relativize(origin)
+        return cls(rdclass, rdtype, preference, map822, mapx400)
+
+    from_wire = classmethod(from_wire)
+
+    def choose_relativity(self, origin = None, relativize = True):
+        self.map822 = self.map822.choose_relativity(origin, relativize)
+        self.mapx400 = self.mapx400.choose_relativity(origin, relativize)
+
+    def _cmp(self, other):
+        sp = struct.pack("!H", self.preference)
+        op = struct.pack("!H", other.preference)
+        v = cmp(sp, op)
+        if v == 0:
+            v = cmp(self.map822, other.map822)
+            if v == 0:
+                v = cmp(self.mapx400, other.mapx400)
+        return v