class Worker(object):
min_procs = 2
max_procs = 4
def __init__(self, args):
self.args = args
if not args.startweb and not args.stopweb:
self.procs = self.set_procs(args.number)
self.ac = ApplicationConfiguration(parserargs=args)
self.cs = ContainerSearch()
self.output = Reporter()
self.cve_file = os.path.join(self.ac.workdir,
"com.redhat.rhsa-all.xml")
self.cve_file_bz = os.path.join(self.ac.workdir,
"com.redhat.rhsa-all.xml.bz2")
def set_procs(self, number):
numThreads = psutil.NUM_CPUS if number is None else number
if numThreads < self.min_procs:
if self.args.number is not None:
print "The image-scanner requires --number to be a minimum " \
"of {0}. Setting --number to {1}".format(self.min_procs,
self.min_procs)
return self.min_procs
elif numThreads <= self.max_procs:
return numThreads
else:
if self.args.number is not None:
print "Due to docker issues, we limit the max number "\
"of threads to {0}. Setting --number to "\
"{1}".format(self.max_procs, self.max_procs)
return self.max_procs
def _get_cids_for_image(self, cs, image):
cids = []
if image in cs.fcons:
for container in cs.fcons[image]:
cids.append(container['uuid'])
return cids
def get_cve_data(self):
# FIXME
# Wrap this in an exception
hdr = {'User-agent': 'Mozilla/5.0'}
url = ("http://www.redhat.com/security/data/oval/"
"com.redhat.rhsa-all.xml.bz2")
self.ac._print("Obtaining CVE file data from {0}".format(url))
bar = urllib2.Request(url, "", hdr)
resp = urllib2.urlopen(bar)
fh = open(self.cve_file_bz, "w")
fh.write(resp.read())
fh.close()
def extract_cve_data(self):
# Extract the XML bz
bzfile = bz2.BZ2File(self.cve_file_bz)
cve_data = bzfile.read()
open(self.cve_file, 'wb').write(cve_data)
def return_active_threadnames(self, threads):
thread_names = []
for thread in threads:
thread_name = thread._Thread__name
if thread_name is not "MainThread":
thread_names.append(thread_name)
return thread_names
def onlyactive(self):
''' This function sorts of out only the active containers'''
con_list = []
# Rid ourselves of 0 size containers
for container in self.cs.active_containers:
con_list.append(container['Id'])
if len(con_list) == 0:
print "There are no active containers on this system"
sys.exit(1)
else:
self._do_work(con_list)
def allimages(self):
if len(self.cs.imagelist) == 0:
print "There are no images on this system"
sys.exit(1)
self._do_work(self.cs.imagelist)
def list_of_images(self, image_list):
self._do_work(image_list)
def allcontainers(self):
if len(self.cs.cons) == 0:
print "There are no containers on this system"
sys.exit(1)
else:
con_list = []
for con in self.cs.cons:
con_list.append(con['Id'])
self._do_work(con_list)
def _do_work(self, image_list):
cp = CVEParse(self.ac.workdir)
if (not os.path.exists(cp.xmlf)) or \
(self.ac.nocache) or \
((time.time() - os.path.getmtime(cp.xmlf)) / (60 ** 2) > 12):
# If we find a tarball of the dist break outs and
# it is less than 12 hours old, use it to speed things
# up
self.get_cve_data()
self.extract_cve_data()
self.ac._print("Splitting master XML file into distribution "
"specific XML files")
# Run dist breakout to make dist specific XML
# files
t = timeit.Timer(cp.parse_for_platform).timeit(number=1)
logging.debug("Parsed distribution breakup in "
"{0} seconds".format(t))
self.ac._print("\nBegin processing\n")
threads = []
for image in image_list:
cids = self._get_cids_for_image(self.cs, image)
t = threading.Thread(target=self.search_containers, name=image,
args=(image, cids, self.output,))
threads.append(t)
logging.info("Number of containers to scan: {0}".format(len(threads)))
total_images = len(threads)
if isinstance(threading.current_thread(), threading._MainThread):
signal.signal(signal.SIGINT, self.signal_handler)
self.threads_complete = 0
self.ac._print("")
while len(threads) > 0:
if len(threading.enumerate()) < self.procs:
new_thread = threads.pop()
new_thread.start()
self._progress(float(self.threads_complete),
float(total_images))
if self.ac.api:
exit_thread_count = 2
else:
exit_thread_count = 1
while len(threading.enumerate()) > exit_thread_count:
self._progress(float(self.threads_complete), float(total_images))
time.sleep(1)
pass
self._progress(float(self.threads_complete), float(total_images))
self.ac._print("\n" * 2)
self.output.report_summary()
def _progress(self, complete, total):
if not self.ac.api:
sys.stdout.write("\r[{0:20s}] {1}% {2}/{3}"
.format('#' * int(complete / total * 20),
int(complete / total * 100),
int(complete), int(total)))
sys.stdout.flush()
def signal_handler(self, signal, frame):
print "\n\nExiting..."
sys.exit(0)
def search_containers(self, image, cids, output):
f = Scan(image, cids, output)
try:
if f.get_release():
t = timeit.Timer(f.scan).timeit(number=1)
logging.debug("Scanned chroot for image {0}"
" completed in {1} seconds"
.format(image, t))
timeit.Timer(f.report_results).timeit(number=1)
else:
# This is not a RHEL image or container
f._report_not_rhel(image)
except subprocess.CalledProcessError:
pass
start = time.time()
f.DM.cleanup(f.dm_results)
logging.debug("Removing temporary chroot for image {0} completed in"
" {1} seconds".format(image, time.time() - start))
self.threads_complete += 1
def _check_input(self, image_list):
'''
Takes a list of image ids, image-names, container ids, or
container-names and returns a list of images ids and
container ids
'''
dm = DockerMount(dockerclient=self.ac.conn)
work_list = []
# verify
try:
for image in image_list:
iid, dtype = dm.get_iid(image)
work_list.append(iid)
except DockerMountError:
print "Unable to associate {0} with any image " \
"or container".format(image)
sys.exit(1)
return work_list
def start_web(self, workdir):
report_dir = os.path.join(workdir, "openscap_reports")
cmd = ['uwsgi', '--plugin', 'python,http', '--http-socket', ':9090',
'--check-static', report_dir, '--static-index', 'summary.html',
'--wsgi-file', 'serv.py', '--daemonize',
os.path.join(workdir, "uwsgi.log")]
p = threading.Thread(target=subprocess.call, args=(cmd,))
p.daemon = True
p.start()
def stop_web(self):
import requests
stop = requests.Session()
try:
stop.get('http://localhost:9090/serv')
except requests.exceptions.ConnectionError:
pass
def start_application(self):
start_time = time.time()
logging.basicConfig(filename=self.args.logfile,
format='%(asctime)s %(levelname)-8s %(message)s',
datefmt='%m-%d %H:%M', level=logging.DEBUG)
if self.args.startweb:
self.start_web(self.args.workdir)
if self.args.stopweb:
self.stop_web()
if self.args.onlyactive:
self.onlyactive()
if self.args.allcontainers:
self.allcontainers()
if self.args.allimages:
self.allimages()
if self.args.images:
# Check to make sure we have valid input
image_list = self._check_input(self.args.images)
self.list_of_images(image_list)
end_time = time.time()
duration = (end_time - start_time)
if duration < 60:
unit = "seconds"
else:
unit = "minutes"
duration = duration / 60
logging.info("Completed entire scan in {0} {1}".format(duration, unit))
if self.ac.api:
return self.ac.return_json
