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158 lines
3.6 KiB
Python
158 lines
3.6 KiB
Python
#
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# This file is part of pyasn1 software.
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#
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# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pyasn1/license.html
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#
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import logging
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import sys
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from pyasn1 import __version__
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from pyasn1 import error
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from pyasn1.compat.octets import octs2ints
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__all__ = ['Debug', 'setLogger', 'hexdump']
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DEBUG_NONE = 0x0000
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DEBUG_ENCODER = 0x0001
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DEBUG_DECODER = 0x0002
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DEBUG_ALL = 0xffff
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FLAG_MAP = {
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'none': DEBUG_NONE,
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'encoder': DEBUG_ENCODER,
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'decoder': DEBUG_DECODER,
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'all': DEBUG_ALL
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}
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LOGGEE_MAP = {}
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class Printer(object):
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# noinspection PyShadowingNames
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def __init__(self, logger=None, handler=None, formatter=None):
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if logger is None:
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logger = logging.getLogger('pyasn1')
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logger.setLevel(logging.DEBUG)
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if handler is None:
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handler = logging.StreamHandler()
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if formatter is None:
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formatter = logging.Formatter('%(asctime)s %(name)s: %(message)s')
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handler.setFormatter(formatter)
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handler.setLevel(logging.DEBUG)
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logger.addHandler(handler)
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self.__logger = logger
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def __call__(self, msg):
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self.__logger.debug(msg)
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def __str__(self):
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return '<python logging>'
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if hasattr(logging, 'NullHandler'):
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NullHandler = logging.NullHandler
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else:
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# Python 2.6 and older
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class NullHandler(logging.Handler):
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def emit(self, record):
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pass
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class Debug(object):
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defaultPrinter = Printer()
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def __init__(self, *flags, **options):
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self._flags = DEBUG_NONE
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if 'loggerName' in options:
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# route our logs to parent logger
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self._printer = Printer(
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logger=logging.getLogger(options['loggerName']),
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handler=NullHandler()
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)
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elif 'printer' in options:
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self._printer = options.get('printer')
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else:
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self._printer = self.defaultPrinter
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self._printer('running pyasn1 %s, debug flags %s' % (__version__, ', '.join(flags)))
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for flag in flags:
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inverse = flag and flag[0] in ('!', '~')
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if inverse:
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flag = flag[1:]
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try:
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if inverse:
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self._flags &= ~FLAG_MAP[flag]
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else:
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self._flags |= FLAG_MAP[flag]
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except KeyError:
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raise error.PyAsn1Error('bad debug flag %s' % flag)
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self._printer("debug category '%s' %s" % (flag, inverse and 'disabled' or 'enabled'))
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def __str__(self):
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return 'logger %s, flags %x' % (self._printer, self._flags)
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def __call__(self, msg):
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self._printer(msg)
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def __and__(self, flag):
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return self._flags & flag
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def __rand__(self, flag):
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return flag & self._flags
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_LOG = DEBUG_NONE
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def setLogger(userLogger):
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global _LOG
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if userLogger:
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_LOG = userLogger
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else:
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_LOG = DEBUG_NONE
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# Update registered logging clients
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for module, (name, flags) in LOGGEE_MAP.items():
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setattr(module, name, _LOG & flags and _LOG or DEBUG_NONE)
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def registerLoggee(module, name='LOG', flags=DEBUG_NONE):
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LOGGEE_MAP[sys.modules[module]] = name, flags
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setLogger(_LOG)
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return _LOG
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def hexdump(octets):
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return ' '.join(
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['%s%.2X' % (n % 16 == 0 and ('\n%.5d: ' % n) or '', x)
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for n, x in zip(range(len(octets)), octs2ints(octets))]
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)
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class Scope(object):
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def __init__(self):
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self._list = []
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def __str__(self): return '.'.join(self._list)
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def push(self, token):
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self._list.append(token)
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def pop(self):
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return self._list.pop()
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scope = Scope()
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