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author | Andrew Tridgell <tridge@samba.org> | 2010-03-05 11:45:40 +1100 |
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committer | Andrew Tridgell <tridge@samba.org> | 2010-03-05 11:54:36 +1100 |
commit | 7d86257d54cb59d016a051b91bdee62ab2f8a0d5 (patch) | |
tree | ca682263ae2dffeaf58134e47080078864df64d4 /source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py | |
parent | f3ca7a4696cadbb74f41dd71ef9336445682d406 (diff) | |
download | samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.tar.gz samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.tar.bz2 samba-7d86257d54cb59d016a051b91bdee62ab2f8a0d5.zip |
s4-python: import a copy of the python dns library
This library is not installed on enough systems for us to rely
on it being available. We use the system copy if possible, and
fallback to this local copy
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Diffstat (limited to 'source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py')
-rw-r--r-- | source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py new file mode 100644 index 0000000000..43db2a48c0 --- /dev/null +++ b/source4/scripting/python/samba_external/dnspython/dns/rdtypes/txtbase.py @@ -0,0 +1,87 @@ +# Copyright (C) 2006, 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. + +"""TXT-like base class.""" + +import dns.exception +import dns.rdata +import dns.tokenizer + +class TXTBase(dns.rdata.Rdata): + """Base class for rdata that is like a TXT record + + @ivar strings: the text strings + @type strings: list of string + @see: RFC 1035""" + + __slots__ = ['strings'] + + def __init__(self, rdclass, rdtype, strings): + super(TXTBase, self).__init__(rdclass, rdtype) + if isinstance(strings, str): + strings = [ strings ] + self.strings = strings[:] + + def to_text(self, origin=None, relativize=True, **kw): + txt = '' + prefix = '' + for s in self.strings: + txt += '%s"%s"' % (prefix, dns.rdata._escapify(s)) + prefix = ' ' + return txt + + def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): + strings = [] + while 1: + token = tok.get().unescape() + if token.is_eol_or_eof(): + break + if not (token.is_quoted_string() or token.is_identifier()): + raise dns.exception.SyntaxError("expected a string") + if len(token.value) > 255: + raise dns.exception.SyntaxError("string too long") + strings.append(token.value) + if len(strings) == 0: + raise dns.exception.UnexpectedEnd + return cls(rdclass, rdtype, strings) + + from_text = classmethod(from_text) + + def to_wire(self, file, compress = None, origin = None): + for s in self.strings: + l = len(s) + assert l < 256 + byte = chr(l) + file.write(byte) + file.write(s) + + def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): + strings = [] + while rdlen > 0: + l = ord(wire[current]) + current += 1 + rdlen -= 1 + if l > rdlen: + raise dns.exception.FormError + s = wire[current : current + l] + current += l + rdlen -= l + strings.append(s) + return cls(rdclass, rdtype, strings) + + from_wire = classmethod(from_wire) + + def _cmp(self, other): + return cmp(self.strings, other.strings) |