def __init__(self):
self.util = UtilBase()
def __init__(self):
self.util = UtilBase()
class CoreBase(object):
def __init__(self):
self.util = UtilBase()
def guess_format(self, data, fname):
"Return a good default Operation, judging by the first 300 bytes or so."
suffix_map = { "tar" : ["tar", "xvf"],
"tgz" : ["tar", "xvzf"],
"gz" : ["gunzip", "-q"],
"tbz" : ["tar", "xvjf"],
"bz2" : ["bunzip2", "-q"],
"zip" : ["unzip", "-f"]}
def string(offset, match):
return data[offset:offset + len(match)] == match
# Archives
if string(257, 'ustar\0') or string(257, 'ustar\040\040\0'):
return suffix_map["tar"]
if string(0, 'PK\003\004'): return suffix_map["zip"]
if string(0, 'PK00'): return suffix_map["zip"]
# Compressed streams
if string(0, '\037\213'):
if fname.endswith('.tar.gz') or fname.endswith('.tgz'):
return suffix_map["tgz"]
return suffix_map["gz"]
if string(0, 'BZh') or string(0, 'BZ'):
if fname.endswith('.tar.bz') or fname.endswith('.tar.bz2') or \
fname.endswith('.tbz') or fname.endswith('.tbz2'):
return suffix_map["tbz"]
return suffix_map["bz2"]
return False
def extractCore(self, filepath):
""" utility to extract archive and pull out core
"""
# Making an assumption that if we are extracting a file then
# the contents of that file are placed wherever cas is run from
self.dst = os.path.realpath(os.curdir)
self.filepath = filepath
fd = open(self.filepath, 'rb')
data = os.read(fd.fileno(), 1000)
format = self.guess_format(data, self.filepath)
if not format:
raise CoreException("Can not determine compression format.")
else:
format.append(self.filepath)
# TODO: figure out someway to print some status to the screen
# during extraction
# FIXME: failing to determine corefile after extraction, running
# on extracted core works. possible problem being looking in the wrong
# directory
p = Popen(format, stdout=PIPE, stderr=PIPE)
err = p.stderr.read()
out = p.stdout.read()
if err:
raise CoreException("Unable to extract file: %s" % (err,))
for root, dirs, files in self.util.directoryList(self.dst):
for file in files:
if self.isCorefile(file):
return os.path.join(root,file)
raise CoreException("Can not determine a corefile from tarball : %s" % (self.filepath,))
def isCorefile(self, corefile):
cmd = ["file","-i",corefile]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
txt = p.stdout.read()
items = ['application/x-coredump',
'application/octet-stream',
'application/x-executable']
for i in items:
if i in txt:
return True
return False
def timestamp(self, path, blksize=None):
""" captures fingerprint from core
"""
match='Linux\sversion.*20\d{1,2}|#1\s.*20\d{1,2}'
try:
fd=open('%s' % (path))
except IOError:
return False
fd.seek(0)
if not blksize or blksize == "":
blksize = 540000000
b = os.read(fd.fileno(),blksize)
out = self.util.regexSearch(match, b)
if out:
return out
raise CoreException("Unable to retrieve timestamp from: %s" % (path,))
class CoreBase(object):
def __init__(self):
self.util = UtilBase()
def guess_format(self, data, fname):
"Return a good default Operation, judging by the first 300 bytes or so."
suffix_map = {
"tar": ["tar", "xvf"],
"tgz": ["tar", "xvzf"],
"gz": ["gunzip", "-q"],
"tbz": ["tar", "xvjf"],
"bz2": ["bunzip2", "-q"],
"zip": ["unzip", "-f"]
}
def string(offset, match):
return data[offset:offset + len(match)] == match
# Archives
if string(257, 'ustar\0') or string(257, 'ustar\040\040\0'):
return suffix_map["tar"]
if string(0, 'PK\003\004'): return suffix_map["zip"]
if string(0, 'PK00'): return suffix_map["zip"]
# Compressed streams
if string(0, '\037\213'):
if fname.endswith('.tar.gz') or fname.endswith('.tgz'):
return suffix_map["tgz"]
return suffix_map["gz"]
if string(0, 'BZh') or string(0, 'BZ'):
if fname.endswith('.tar.bz') or fname.endswith('.tar.bz2') or \
fname.endswith('.tbz') or fname.endswith('.tbz2'):
return suffix_map["tbz"]
return suffix_map["bz2"]
return False
def extractCore(self, filepath):
""" utility to extract archive and pull out core
"""
# Making an assumption that if we are extracting a file then
# the contents of that file are placed wherever cas is run from
self.dst = os.path.realpath(os.curdir)
self.filepath = filepath
fd = open(self.filepath, 'rb')
data = os.read(fd.fileno(), 1000)
format = self.guess_format(data, self.filepath)
if not format:
raise CoreException("Can not determine compression format.")
else:
format.append(self.filepath)
# TODO: figure out someway to print some status to the screen
# during extraction
# FIXME: failing to determine corefile after extraction, running
# on extracted core works. possible problem being looking in the wrong
# directory
p = Popen(format, stdout=PIPE, stderr=PIPE)
err = p.stderr.read()
out = p.stdout.read()
if err:
raise CoreException("Unable to extract file: %s" % (err, ))
for root, dirs, files in self.util.directoryList(self.dst):
for file in files:
if self.isCorefile(file):
return os.path.join(root, file)
raise CoreException("Can not determine a corefile from tarball : %s" %
(self.filepath, ))
def isCorefile(self, corefile):
cmd = ["file", "-i", corefile]
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
txt = p.stdout.read()
items = [
'application/x-coredump', 'application/octet-stream',
'application/x-executable'
]
for i in items:
if i in txt:
return True
return False
def timestamp(self, path, blksize=None):
""" captures fingerprint from core
"""
match = 'Linux\sversion.*20\d{1,2}|#1\s.*20\d{1,2}'
try:
fd = open('%s' % (path))
except IOError:
return False
fd.seek(0)
if not blksize or blksize == "":
blksize = 540000000
b = os.read(fd.fileno(), blksize)
out = self.util.regexSearch(match, b)
if out:
return out
raise CoreException("Unable to retrieve timestamp from: %s" % (path, ))