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import os, sys, re, shutil, random, gettext
from linda import clparser
from linda.debug import dprint, vprint
from linda.collector import Collector
from linda.funcs import run_external_cmd, iterate_dir, ExtCmdException
from linda.parser.control import DebianControlParser, DCPException
from linda.parser.dsc import DSCParser, filter_for_src_dir, file_or_sym
from linda.parser.unixperm import UnixPermParser
_ = gettext.gettext
class Unpacker:
def __init__(self):
self.lab = self.set_up_lab()
self.information = {'control': {'self': {}, 'info': {}}, 'dsc': [], \
'dir': '', 'collector': None}
self.files = {'tarball': '', 'patch': ''}
def unpack(self, file, level=1):
if hasattr(self, 'unpack_%s_%d' % (file[-3:], level)):
getattr(self, 'unpack_%s_%d' % (file[-3:], level))(file)
else:
raise UnpackException("No idea how to unpack %s at level %d" % \
(file, level))
def unpack_deb_1(self, file):
try:
dprint(_("Unpacking binary, level 1"))
cur_dir = os.getcwd()
os.chdir(self.lab)
run_external_cmd('ar x %s' % file)
os.chdir(cur_dir)
os.unlink(os.path.join(self.lab, 'debian-binary')) # For now
output = run_external_cmd('tar zxvvCf %s %s' % \
(os.path.join(self.lab, 'control'), os.path.join(self.lab, \
'control.tar.gz')))
os.unlink(os.path.join(self.lab, 'control.tar.gz'))
try:
self.information['control']['self'] = \
DebianControlParser('%s/control/control' % self.lab)
except DCPException, e:
raise UnpackException(e)
for x in output.split('\n'):
tmp_array = x.split(' ')
cur_file = tmp_array[-1]
if cur_file == './': continue
self.information['control']['info'][cur_file[2:]] = \
[tmp_array[1], UnixPermParser(tmp_array[0])]
dprint(_("Control info: %s.") % \
self.information['control']['info'], 2)
except EnvironmentError:
raise UnpackException("Level 1 binary unpacking failed!")
def unpack_deb_2(self, file):
try:
dprint(_("Jumping to level 2 (binary)"))
output = run_external_cmd('LANG=C tar zvvxCf %s %s' % \
(os.path.join(self.lab, 'unpacked'), os.path.join(self.lab, \
'data.tar.gz')))
os.unlink(os.path.join(self.lab, 'data.tar.gz'))
self.information['dir'] = self.lab
if not clparser['unpack']:
self.information['collector'] = Collector('bin', \
'%s/unpacked' % self.lab, output)
for x in ('files', 'dirs', 'elf'):
dprint(_("Files: %s: %s") % (x, \
self.information['collector']('files', x)), 4)
for x in ('file', 'ldd', 'objdump'):
dprint(_("Output: %s: %s") % (x, \
self.information['collector']('output', x)), 4)
except EnvironmentError:
raise UnpackException("Level 2 binary unpacking failed!")
def unpack_dsc_1(self, file):
self.information['dsc'] = DSCParser(file)
dprint(_("Parsed .dsc: %s.") % self.information['dsc'])
def unpack_dsc_2(self, file):
dprint(_("Jumping to level 2 (source)"))
cur_dir = os.getcwd()
os.chdir(self.lab)
unparsed_ver = self.information['dsc']['version']
if unparsed_ver.find('-') != -1:
version = unparsed_ver[:unparsed_ver.rfind('-')]
else:
version = unparsed_ver
if version.find(':') != -1:
version = version.split(':')[1]
new_directory = '%s-%s' % (self.information['dsc']['source'], version)
self.information['dir'] = os.path.abspath(new_directory)
keeper, throw = os.path.split(file)
for i in self.information['dsc']['files']:
tmp = i.split(' ')
if tmp[3].endswith('tar.gz'):
self.files['tarball'] = '%s/%s' % (keeper, tmp[3])
elif tmp[3].endswith('diff.gz'):
self.files['patch'] = '%s/%s' % (keeper, tmp[3])
filename = {'tar': os.path.split(self.files['tarball'])[1], 'patch': \
os.path.split(self.files['patch'])[1]}
dprint(_("Untaring source: %s") % filename['tar'])
if os.path.exists(self.files['tarball']):
run_external_cmd('tar zxf %s' % self.files['tarball'])
else:
raise UnpackException, "Tarball %s doesn't exist" % \
self.files['tarball']
snapshot_lab = filter(filter_for_src_dir, os.listdir(self.lab))
if len(snapshot_lab) == 1:
if snapshot_lab[0] != new_directory:
if os.path.isdir(os.path.join(self.lab, snapshot_lab[0])):
dprint(_("Renaming source directory: %s -> %s") % \
(snapshot_lab[0], new_directory))
os.rename(snapshot_lab[0], new_directory)
else:
dprint(_("Creating new directory: %s") % new_directory)
os.mkdir(os.path.join(self.lab, new_directory))
dprint(_("Moving %s into %s.") % (snapshot_lab[0], \
new_directory))
os.rename(os.path.join(self.lab, snapshot_lab[0]), \
os.path.join(self.lab, new_directory, snapshot_lab[0]))
elif len(snapshot_lab) == 0:
raise UnpackException("no source files found.")
else:
os.mkdir(new_directory)
for file in snapshot_lab:
dprint(_("Moving %s into %s") % (file, new_directory))
os.rename(file, os.path.join(new_directory, file))
if filename['patch']:
dprint(_("Applying patch: %s.") % filename['patch'])
try:
run_external_cmd('zcat %s | patch -p0 -g 0 -t -s' % \
self.files['patch'])
except ExtCmdException:
raise UnpackException('patch failed to run!')
try:
self.information['control']['self'] = \
DebianControlParser(os.path.join(self.information['dir'], \
'debian', 'control'))
except DCPException, e:
raise UnpackException(e)
self.information['collector'] = Collector('src', self.lab, \
filter(file_or_sym, iterate_dir(new_directory)))
os.chdir(cur_dir)
dprint(_("Files: %s") % \
self.information['collector']('files', 'files'), 4)
dprint(_("Output: %s") % \
self.information['collector']('output', 'file'), 4)
def set_up_lab(self):
for dir in (clparser['lab-root'], os.environ.get('TMPDIR'), '/tmp'):
if dir:
lab_root = dir
break
lab_directory = "%s/linda-lab-%05d" % (lab_root, \
random.choice(range(100000)))
if os.path.exists(lab_directory):
dprint(_("Lab %s already exists; trying again.") % lab_directory)
lab_directory = "%s/linda-lab-%05d" % (lab_root, \
random.choice(range(100000)))
try:
os.makedirs(lab_directory + '/control')
os.mkdir(lab_directory + '/unpacked')
dprint(_("Creating lab directory: %s.") % lab_directory)
vprint(_("Creating lab directory: %s.") % lab_directory, 2)
return lab_directory
except OSError, e:
raise UnpackException('Failed to create lab directory: %s.') % e
def cull_lab(self):
real_cull(self.lab)
class UnpackException(Exception):
pass
def real_cull(lab):
# So I don't have to duplicate lab cleaning code.
if not clparser['no-cull']:
try:
shutil.rmtree(lab)
except OSError:
print _("Failed to remove lab directory: %s") % lab
dprint(_("Removing lab directory: %s.") % lab)
vprint(_("Removing lab directory: %s.") % lab, 2)
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