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Diffstat (limited to 'source4/scripting/python/samba_external/dnspython/dns/opcode.py')
-rw-r--r-- | source4/scripting/python/samba_external/dnspython/dns/opcode.py | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/source4/scripting/python/samba_external/dnspython/dns/opcode.py b/source4/scripting/python/samba_external/dnspython/dns/opcode.py deleted file mode 100644 index 735d3a1f7d..0000000000 --- a/source4/scripting/python/samba_external/dnspython/dns/opcode.py +++ /dev/null @@ -1,104 +0,0 @@ -# Copyright (C) 2001-2007, 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. - -"""DNS Opcodes.""" - -import dns.exception - -QUERY = 0 -IQUERY = 1 -STATUS = 2 -NOTIFY = 4 -UPDATE = 5 - -_by_text = { - 'QUERY' : QUERY, - 'IQUERY' : IQUERY, - 'STATUS' : STATUS, - 'NOTIFY' : NOTIFY, - 'UPDATE' : UPDATE -} - -# We construct the inverse mapping programmatically to ensure that we -# cannot make any mistakes (e.g. omissions, cut-and-paste errors) that -# would cause the mapping not to be true inverse. - -_by_value = dict([(y, x) for x, y in _by_text.iteritems()]) - - -class UnknownOpcode(dns.exception.DNSException): - """Raised if an opcode is unknown.""" - pass - -def from_text(text): - """Convert text into an opcode. - - @param text: the textual opcode - @type text: string - @raises UnknownOpcode: the opcode is unknown - @rtype: int - """ - - if text.isdigit(): - value = int(text) - if value >= 0 and value <= 15: - return value - value = _by_text.get(text.upper()) - if value is None: - raise UnknownOpcode - return value - -def from_flags(flags): - """Extract an opcode from DNS message flags. - - @param flags: int - @rtype: int - """ - - return (flags & 0x7800) >> 11 - -def to_flags(value): - """Convert an opcode to a value suitable for ORing into DNS message - flags. - @rtype: int - """ - - return (value << 11) & 0x7800 - -def to_text(value): - """Convert an opcode to text. - - @param value: the opcdoe - @type value: int - @raises UnknownOpcode: the opcode is unknown - @rtype: string - """ - - text = _by_value.get(value) - if text is None: - text = str(value) - return text - -def is_update(flags): - """True if the opcode in flags is UPDATE. - - @param flags: DNS flags - @type flags: int - @rtype: bool - """ - - if (from_flags(flags) == UPDATE): - return True - return False |