diff options
Diffstat (limited to 'third_party/dnspython/dns/rdtypes/ANY/NSEC3.py')
| -rw-r--r-- | third_party/dnspython/dns/rdtypes/ANY/NSEC3.py | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/third_party/dnspython/dns/rdtypes/ANY/NSEC3.py b/third_party/dnspython/dns/rdtypes/ANY/NSEC3.py deleted file mode 100644 index c7ac7375b41..00000000000 --- a/third_party/dnspython/dns/rdtypes/ANY/NSEC3.py +++ /dev/null @@ -1,182 +0,0 @@ -# Copyright (C) 2004-2007, 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 base64 -import cStringIO -import string -import struct - -import dns.exception -import dns.rdata -import dns.rdatatype - -b32_hex_to_normal = string.maketrans('0123456789ABCDEFGHIJKLMNOPQRSTUV', - 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567') -b32_normal_to_hex = string.maketrans('ABCDEFGHIJKLMNOPQRSTUVWXYZ234567', - '0123456789ABCDEFGHIJKLMNOPQRSTUV') - -# hash algorithm constants -SHA1 = 1 - -# flag constants -OPTOUT = 1 - -class NSEC3(dns.rdata.Rdata): - """NSEC3 record - - @ivar algorithm: the hash algorithm number - @type algorithm: int - @ivar flags: the flags - @type flags: int - @ivar iterations: the number of iterations - @type iterations: int - @ivar salt: the salt - @type salt: string - @ivar next: the next name hash - @type next: string - @ivar windows: the windowed bitmap list - @type windows: list of (window number, string) tuples""" - - __slots__ = ['algorithm', 'flags', 'iterations', 'salt', 'next', 'windows'] - - def __init__(self, rdclass, rdtype, algorithm, flags, iterations, salt, - next, windows): - super(NSEC3, self).__init__(rdclass, rdtype) - self.algorithm = algorithm - self.flags = flags - self.iterations = iterations - self.salt = salt - self.next = next - self.windows = windows - - def to_text(self, origin=None, relativize=True, **kw): - next = base64.b32encode(self.next).translate(b32_normal_to_hex).lower() - if self.salt == '': - salt = '-' - else: - salt = self.salt.encode('hex-codec') - text = '' - for (window, bitmap) in self.windows: - bits = [] - for i in xrange(0, len(bitmap)): - byte = ord(bitmap[i]) - for j in xrange(0, 8): - if byte & (0x80 >> j): - bits.append(dns.rdatatype.to_text(window * 256 + \ - i * 8 + j)) - text += (' ' + ' '.join(bits)) - return '%u %u %u %s %s%s' % (self.algorithm, self.flags, self.iterations, - salt, next, text) - - def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True): - algorithm = tok.get_uint8() - flags = tok.get_uint8() - iterations = tok.get_uint16() - salt = tok.get_string() - if salt == '-': - salt = '' - else: - salt = salt.decode('hex-codec') - next = tok.get_string().upper().translate(b32_hex_to_normal) - next = base64.b32decode(next) - rdtypes = [] - while 1: - token = tok.get().unescape() - if token.is_eol_or_eof(): - break - nrdtype = dns.rdatatype.from_text(token.value) - if nrdtype == 0: - raise dns.exception.SyntaxError("NSEC3 with bit 0") - if nrdtype > 65535: - raise dns.exception.SyntaxError("NSEC3 with bit > 65535") - rdtypes.append(nrdtype) - rdtypes.sort() - window = 0 - octets = 0 - prior_rdtype = 0 - bitmap = ['\0'] * 32 - windows = [] - for nrdtype in rdtypes: - if nrdtype == prior_rdtype: - continue - prior_rdtype = nrdtype - new_window = nrdtype // 256 - if new_window != window: - windows.append((window, ''.join(bitmap[0:octets]))) - bitmap = ['\0'] * 32 - window = new_window - offset = nrdtype % 256 - byte = offset // 8 - bit = offset % 8 - octets = byte + 1 - bitmap[byte] = chr(ord(bitmap[byte]) | (0x80 >> bit)) - windows.append((window, ''.join(bitmap[0:octets]))) - return cls(rdclass, rdtype, algorithm, flags, iterations, salt, next, windows) - - from_text = classmethod(from_text) - - def to_wire(self, file, compress = None, origin = None): - l = len(self.salt) - file.write(struct.pack("!BBHB", self.algorithm, self.flags, - self.iterations, l)) - file.write(self.salt) - l = len(self.next) - file.write(struct.pack("!B", l)) - file.write(self.next) - for (window, bitmap) in self.windows: - file.write(chr(window)) - file.write(chr(len(bitmap))) - file.write(bitmap) - - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None): - (algorithm, flags, iterations, slen) = struct.unpack('!BBHB', - wire[current : current + 5]) - current += 5 - rdlen -= 5 - salt = wire[current : current + slen].unwrap() - current += slen - rdlen -= slen - (nlen, ) = struct.unpack('!B', wire[current]) - current += 1 - rdlen -= 1 - next = wire[current : current + nlen].unwrap() - current += nlen - rdlen -= nlen - windows = [] - while rdlen > 0: - if rdlen < 3: - raise dns.exception.FormError("NSEC3 too short") - window = ord(wire[current]) - octets = ord(wire[current + 1]) - if octets == 0 or octets > 32: - raise dns.exception.FormError("bad NSEC3 octets") - current += 2 - rdlen -= 2 - if rdlen < octets: - raise dns.exception.FormError("bad NSEC3 bitmap length") - bitmap = wire[current : current + octets].unwrap() - current += octets - rdlen -= octets - windows.append((window, bitmap)) - return cls(rdclass, rdtype, algorithm, flags, iterations, salt, next, windows) - - from_wire = classmethod(from_wire) - - def _cmp(self, other): - b1 = cStringIO.StringIO() - self.to_wire(b1) - b2 = cStringIO.StringIO() - other.to_wire(b2) - return cmp(b1.getvalue(), b2.getvalue()) |