def checksum(self, item):
if self.algorithm == 'mtime':
return str(int(item.mtime))
else:
method = checksum.new(self.algorithm)
handle = item.open()
while True:
chunk = handle.read(self.blocksize)
if not chunk:
break
else:
method.update(chunk)
handle.close()
self.cache[item] = method.hexdigest()
return self.cache[item]
def checksum(self, item):
if self.algorithm == 'mtime':
return str(int(item.mtime))
else:
method = checksum.new(self.algorithm)
handle = item.open()
while True:
chunk = handle.read(self.blocksize)
if not chunk:
break
else:
method.update(chunk)
handle.close()
self.cache[item] = method.hexdigest()
return self.cache[item]
def ignore_hash(self, item, **kwargs):
'''
Check if the match is to be ignored, based on hash. This mechanism is
used to filter out errors and false positives.
'''
context = self.config.getdefault('clean:%s' % self.name, 'context',
self.config.getdefault('clean', 'context', 'line')
)
# Calculate checksum using the selected algorith, and check if it is in
# the ignore list for this probe
hashing = checksum.new(self.algorithm)
if context == 'file':
for line in item.open('rb'):
hashing.update(line)
elif context == 'line':
try:
hashing.update(kwargs['raw'])
except KeyError:
# The reported item has no "raw" format, therefor we can not
# provide a line-based hash
return None, False
elif context == 'format':
format = self.config.get('clean:%s' % self.name, 'format')
hashing.update(format.format(**kwargs))
else:
raise TypeError('Probe %s does not support %s context' % \
(self.name, context))
digest = hashing.hexdigest()
if digest in IGNORE[self.name]['hash']:
logging.debug('ignoring %r in %s: %s' % (item, self.name, digest))
return digest, True
else:
logging.debug('allowing %r in %s: %s' % (item, self.name, digest))
return digest, False
def ignore_hash(self, item, **kwargs):
'''
Check if the match is to be ignored, based on hash. This mechanism is
used to filter out errors and false positives.
'''
context = self.config.getdefault(
'clean:%s' % self.name, 'context',
self.config.getdefault('clean', 'context', 'line'))
# Calculate checksum using the selected algorith, and check if it is in
# the ignore list for this probe
hashing = checksum.new(self.algorithm)
if context == 'file':
for line in item.open('rb'):
hashing.update(line)
elif context == 'line':
try:
hashing.update(kwargs['raw'])
except KeyError:
# The reported item has no "raw" format, therefor we can not
# provide a line-based hash
return None, False
elif context == 'format':
format = self.config.get('clean:%s' % self.name, 'format')
hashing.update(format.format(**kwargs))
else:
raise TypeError('Probe %s does not support %s context' % \
(self.name, context))
digest = hashing.hexdigest()
if digest in IGNORE[self.name]['hash']:
logging.debug('ignoring %r in %s: %s' % (item, self.name, digest))
return digest, True
else:
logging.debug('allowing %r in %s: %s' % (item, self.name, digest))
return digest, False
