def run(self):
"""
"""
print "network sniffer started, pid=%s" % self.pid
# apply BPF filter
# see http://biot.com/capstats/bpf.html
# bpf restrict to TCP only, note libnids caution about fragments
nids.param('pcap_filter', self.bpf_filter)
# various settings - may be essential
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("scan_num_hosts", 0) # disable portscan detection
#nids.param("scan_num_ports", 0)
#nids.param("scan_delay", 0)
nids.param("pcap_timeout", 64)
nids.param("multiproc", True)
nids.param("tcp_workarounds", True)
#nids.param("filename", sys.argv[1]) # read a pcap file?
nids.param("device", self.interface_name) # read from network device
# bootstrap
nids.init()
self.drop_root_privileges()
nids.register_tcp(self.tcp_stream_handler)
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
try:
nids.run()
except nids.error, e:
print "nids/pcap error:", e
def main():
args = sys.argv[1:]
print args
# Default to listening to all devices
nids.param("device", 'any')
nids.param("pcap_filter", ' '.join(args) + ' and tcp')
# disable portscan detection
nids.param("scan_num_hosts", 0)
# disable check-summing
nids.chksum_ctl([('0.0.0.0/0', False)])
nids.init()
(uid, gid) = pwd.getpwnam(NOTROOT)[2:4]
os.setgroups([gid, ])
os.setgid(gid)
os.setuid(uid)
if 0 in [os.getuid(), os.getgid()] + list(os.getgroups()):
print "error - drop root, please!"
sys.exit(1)
nids.register_tcp(handle_tcp)
while True:
try:
nids.next()
except nids.error, e:
print "nids/pcap error:", e
def main():
#nids.param("pcap_filter", "tcp") # bpf restrict to TCP only, note
# libnids caution about fragments
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
if len(sys.argv) == 2: # read a pcap file?
nids.param("filename", sys.argv[1])
nids.init()
nids.register_tcp(handleTcpStream)
nids.register_udp(handleUDP)
nids.register_ip(handleIp)
print "pid", os.getpid()
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
try:
nids.run()
except nids.error, e:
print "nids/pcap error:", e
def main():
"""
Initialise libnids and process the pcap. This is taken from the pynids
example code.
"""
nids.param("pcap_filter", "tcp") # bpf restrict to TCP only, note
# libnids caution about fragments
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
if len(sys.argv) == 2: # read a pcap file?
nids.param("filename", sys.argv[1])
nids.init()
nids.register_tcp(handleTcpStream)
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
try:
nids.run()
except nids.error, e:
print "nids/pcap error:", e
def nids_init(self):
nids.param("device", self.interface)
nids.param("pcap_filter", "port 80")
nids.param("san_num_hosts", 0)
#nids.param("dev_addon", ?) #might need this for monitor mode
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.init()
nids.register_tcp(self.handle_tcp)
self.nids = nids
def __init__(self):
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
# Default attribute values
self._filter = ''
self._device = ''
self._pcapfile = ''
self._callback = lambda x: x
def main():
nids.param("pcap_filter", "vlan and port 25")
nids.param("scan_num_hosts", 0)
nids.chksum_ctl([('0.0.0.0/0', False)])
nids.param("filename", sys.argv[1])
nids.init()
nids.register_tcp(tcp_callback)
nids.run()
def main():
# parse args
argparser = argparse.ArgumentParser()
argparser.add_argument('PCAP', help='Path to the .pcap file to parse')
argparser.add_argument('-H',
metavar='HOST',
default='127.0.0.1',
help='Address to listen on (DEFAULT: 127.0.0.1)')
argparser.add_argument('-p',
metavar='PORT',
type=int,
default=3128,
help='Port to listen on (DEFAULT: 3128)')
argparser.add_argument('-v',
action='append_const',
const=1,
default=[],
help='Increase the verbosity level')
args = argparser.parse_args()
HOST, PORT = args.H, args.p
verbosity = len(args.v)
# setup logger
if verbosity == 0:
log_level = logging.ERROR
elif verbosity == 1:
log_level = logging.INFO
else:
log_level = logging.DEBUG
logging.basicConfig(format='%(levelname)s:%(message)s', level=log_level)
# setup the reassembler
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl(
[('0.0.0.0/0', False)]
) # disable checksum verification: jsunpack says it may cause missed traffic
nids.param("filename", args.PCAP)
nids.init()
nids.register_tcp(reassembleTcpStream)
logging.info("Processing TCP streams...")
nids.run()
# process the open streams, which are not processed by pynids
logging.info("Processing open streams...")
for c, stream in openstreams.items():
processTcpStream(stream)
# run proxy server
server = ProxyServer((HOST, PORT), ProxyRequestHandler)
server.allow_reuse_address = True
try:
logging.info("Proxy listening on %s:%d" % (HOST, PORT))
server.serve_forever()
except KeyboardInterrupt:
return 0
def __init__(self,fname=None,iface='all'):
threading.Thread.__init__(self)
nids.param("scan_num_hosts", 0)
nids.chksum_ctl([('0.0.0.0/0', False)])
if fname:
nids.param("filename", fname)
else:
nids.param("device", iface)
nids.init()
nids.register_tcp(Nids.handler)
def __init__(self, fname=None, iface='all'):
threading.Thread.__init__(self)
nids.param("scan_num_hosts", 0)
nids.chksum_ctl([('0.0.0.0/0', False)])
if fname:
nids.param("filename", fname)
else:
nids.param("device", iface)
nids.init()
nids.register_tcp(Nids.handler)
def main(self):
#nids.param("filename", "bittorrent.pcap")
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
# nids.register_udp()
nids.init()
nids.register_tcp(self.handleTcpStream)
#nids.register_udp(self.handleUtp)
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
nids.run()
def run_parser(self, out_queue):
try:
nids.param("filename", self.pcap_path)
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.init()
nids.chksum_ctl([('0.0.0.0/0', False), ])
nids.register_tcp(self._handleTcpStream)
nids.run()
except Exception:
self.messages = []
out_queue.put(self.messages)
def main(self):
#nids.param("scan_num_hosts", 0)
nids.param("filename", "test1.pcap")
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
#nids.register_udp()
nids.init()
nids.register_tcp(self.handleTcpStream)
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
try:
nids.run()
except nids.error, e:
print "nids/pcap error:", e
def run(self, conf):
self.conf = conf
self.output = open(conf.output_file, 'a')
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param('scan_num_hosts', 0) # disable portscan detection
nids.param('filename', conf.filename)
nids.init()
nids.register_udp(self.udp_handler)
try:
nids.run()
except nids.error, e:
print >> sys.stderr, 'nids/pcap error:', e
sys.exit(1)
def run_parser(self, out_queue):
try:
nids.param("filename", self.pcap_path)
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.init()
nids.chksum_ctl([
('0.0.0.0/0', False),
])
nids.register_tcp(self._handleTcpStream)
nids.run()
except Exception:
self.messages = []
out_queue.put(self.messages)
def __init__(self, filename, protocol, port=None):
threading.Thread.__init__(self)
self.port = port
self.protocol = protocol
self.done = False
self.connection_list = deque()
self.lock = threading.Lock()
self.delete_read_connections = False
self.last_read_index = -1
nids.param("filename", filename)
nids.chksum_ctl([('0.0.0.0/0', False)])
if port is None:
nids.param("pcap_filter", "{}".format(self.protocol))
else:
nids.param("pcap_filter",
"{} port {}".format(self.protocol, self.port))
def main():
if len(sys.argv) == 2:
nids.param("filename", sys.argv[1])
nids.param("device", "all")
nids.param("tcp_workarounds", True)
nids.param("pcap_timeout", 128)
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.init()
tcpCapturer = TCPPacketCapturer()
try:
nids.run()
except nids.error, e:
print "[-] Error: %s" % (e)
def main():
if len(sys.argv) == 2:
nids.param("filename", sys.argv[1])
nids.param("device", "all")
nids.param("tcp_workarounds", True)
nids.param("pcap_timeout", 128)
nids.param("scan_num_hosts",0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.init()
tcpCapturer = TCPPacketCapturer()
try:
nids.run()
except nids.error, e:
print "[-] Error: %s" % (e)
def main():
# parse args
argparser = argparse.ArgumentParser()
argparser.add_argument('PCAP', help='Path to the .pcap file to parse')
argparser.add_argument('-H', metavar='HOST', default='127.0.0.1', help='Address to listen on (DEFAULT: 127.0.0.1)')
argparser.add_argument('-p', metavar='PORT', type=int, default=3128, help='Port to listen on (DEFAULT: 3128)')
argparser.add_argument('-v', action='append_const', const=1, default=[], help='Increase the verbosity level')
args = argparser.parse_args()
HOST, PORT = args.H, args.p
verbosity = len(args.v)
# setup logger
if verbosity == 0:
log_level = logging.ERROR
elif verbosity == 1:
log_level = logging.INFO
else:
log_level = logging.DEBUG
logging.basicConfig(format='%(levelname)s:%(message)s', level=log_level)
# setup the reassembler
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksum verification: jsunpack says it may cause missed traffic
nids.param("filename", args.PCAP)
nids.init()
nids.register_tcp(reassembleTcpStream)
logging.info("Processing TCP streams...")
nids.run()
# process the open streams, which are not processed by pynids
logging.info("Processing open streams...")
for c, stream in openstreams.items():
processTcpStream(stream)
# run proxy server
server = ProxyServer( (HOST,PORT), ProxyRequestHandler)
server.allow_reuse_address = True
try:
logging.info("Proxy listening on %s:%d" % (HOST,PORT))
server.serve_forever()
except KeyboardInterrupt:
return 0
def run(self, config):
self.config = config
self.config.output = open(self.config.output_file, 'a')
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param('scan_num_hosts', 0) # disable portscan detection
if self.config.filename:
nids.param('filename', self.config.filename)
else:
nids.param('filename', '-')
nids.init()
self.stream_handler = StreamHandler(self.config)
nids.register_tcp(self.stream_handler.handle)
try:
nids.run()
except nids.error, e:
print >> sys.stderr, 'nids/pcap error:', e
sys.exit(-1)
def process_pcap(filename, protocols=[], dports=[]):
global streams_, dports_
streams_ = []
dports_ = dports
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("filename", filename) # specify pcap file to parse
nids.init()
if not protocols or TCP in protocols:
nids.register_tcp(handleTcpStream)
# Loop forever (network device), or until EOF (pcap file)
# Note that an exception in the callback will break the loop!
try:
nids.run()
except nids.error, e:
print "nids/pcap error:", e
def extract(pcap_file):
global ip_to_domain
global ips
ips = {}
ip_to_domain = {}
nids.param("tcp_workarounds", 1)
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("filename", pcap_file)
nids.init()
nids.register_tcp(handle_tcp_stream)
nids.register_udp(udp_callback)
try:
nids.run()
except Exception, e:
print "Exception ", pcap_file + " ", e
return
def extract(pcap_file):
global ip_to_domain
global ips
ips = {}
ip_to_domain = {}
nids.param("tcp_workarounds", 1)
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("filename", pcap_file)
nids.init()
nids.register_tcp(handle_tcp_stream)
nids.register_udp(udp_callback)
try:
nids.run()
except Exception, e:
print "Exception ", pcap_file + " ", e
return
def extract_flows(pcap_file):
global ts, requestdata, responsedata, requestcounter, http_req
ts, requestdata, responsedata, requestcounter, http_req = \
dict([]), dict([]), dict([]), dict([]), dict([])
nids.param("tcp_workarounds", 1)
nids.param("pcap_filter", "tcp") # bpf restrict to TCP only, note
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("filename", pcap_file)
nids.init()
nids.register_tcp(handle_tcp_stream)
# print "pid", os.getpid()
if DEBUG: print "Reading from pcap file:", pcap_file
try:
nids.run()
except nids.error, e:
print "nids/pcap error: ", pcap_file + " ", e
def run(self, config):
self.config = config
self.stream_handler = StreamHandler(self.config)
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param('scan_num_hosts', 0) # disable portscan detection
if self.config.filename:
nids.param('filename', self.config.filename)
else:
nids.param('device', self.config.interface)
nids.init()
nids.register_tcp(self.stream_handler.tcp_callback)
#nids.register_udp(self.stream_handler.udp_callback)
try:
nids.run()
except nids.error, e:
print >> sys.stderr, 'nids/pcap error:', e
print >> sys.stderr, 'Error in %s' % self.filename
traceback.print_exc(file=sys.stderr)
def run(self, config):
self.config = config
self.stream_handler = StreamHandler(self.config)
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param('scan_num_hosts', 0) # disable portscan detection
if self.config.filename:
nids.param('filename', self.config.filename)
else:
nids.param('device', self.config.interface)
nids.init()
nids.register_tcp(self.stream_handler.tcp_callback)
#nids.register_udp(self.stream_handler.udp_callback)
try:
nids.run()
except nids.error, e:
print >> sys.stderr, 'nids/pcap error:', e
print >> sys.stderr, 'Error in %s' % self.filename
traceback.print_exc(file=sys.stderr)
def main():
logging.basicConfig(filename="mspCapturer.log",level=logging.DEBUG)
if (len(sys.argv) != 2):
logging.error( 'Invalid arguments. Usage: main.py <monitor port(s)>\n monitor ports should be specified in a comma seperated list ')
sys.exit(1)
logging.info( 'Set up Reassembler')
nids.param("scan_num_hosts",0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("pcap_timeout", 128)
nids.param("tcp_workarounds", True)
nids.param("sk_buff_size", 256) #default 168
nids.param("n_tcp_streams", 2048) #default 1024
nids.param("device", "all")
nids.init()
assm = Reassembler(ports=sys.argv[1])
try:
nids.run()
except KeyboardInterrupt:
logging.error( "Reassembler Terminated: Quitting")
sys.exit(2)
def __init__(
self,
protocol_uri,
protocol_opts,
pcap_filepath,
output_dir,
log_level,
log_to_stdout,
stats_file=None,
dst=None,
dest_port=None,
src=None,
src_port=None,
start_date=None,
):
self._log_to_stdout = log_to_stdout
self._log_level = log_level
self._proto_uri = protocol_uri
self._proto_opts = protocol_opts
self._dest_port = dest_port
self._src_port = src_port
self._src = src
self._dst = dst
self.output_dir = output_dir
self._pcap_filepath = pcap_filepath
self._start_date = start_date
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("filename", pcap_filepath)
self.stream_parsers = {}
self.stats = {}
if stats_file is None:
now = datetime.utcnow()
formatted_time = now.strftime("%Y-%m-%d--%H-%M-%S")
self.stats_file_path = os.path.join(
self.output_dir, "stats_{}.txt".format(formatted_time))
else:
self.stats_file_path = stats_file
def sniff():
if not _initialized:
raise NameError('Module vars were not initialized.')
nids.param('device', _device)
nids.param('multiproc', 1)
nids.param('scan_num_hosts', 0)
nids.chksum_ctl([('0.0.0.0/0', False)])
nids.init()
nids.register_tcp(_handle_tcp_stream)
nids.register_udp(_handle_udp_stream)
nids.register_ip(_handle_ip_packets)
arp_sniff = Process(target=scapy_sniff, kwargs=dict(store=0,
iface=_device, prn=_parse_arp))
dns_lookups = Process(target=_handle_dns_lookup)
traf_dict = Process(target=_handle_new_traf)
arp_sniff.start()
dns_lookups.start()
traf_dict.start()
nids.run()
return
nids.param("scan_num_hosts", 0)
nids.param("filename", options['filename'])
if options['bpf'] is not None:
nids.param("pcap_filter", options['bpf'])
try:
nids.init()
except Exception, e:
self.complete = True
chop.prnt("Error initting: ", e)
return
nids.chksum_ctl([
('0.0.0.0/0', False),
])
nids.register_tcp(handleTcpStreams)
nids.register_udp(handleUdpDatagrams)
nids.register_ip(handleIpPackets)
while (
not self.stopped
): #This overall while prevents exceptions from halting the long running reading
try:
if options[
'longrun']: #long running don't stop until the proces is killed externally
while not self.stopped:
if not nids.next():
if self.abort: #exit if sigabrt if no other data
break
def __init__(self,
pcap_file=None,
device=None,
bpf_filter="tcp",
dst_tcp_port_filter=None,
dst_tcp_ip_filter=None,
src_tcp_port_filter=None,
src_tcp_ip_filter=None,
udp_port_filter=None,
udp_ip_filter=None,
data_level=1,
data_stream_direct=2,
std_output_enable=1,
file_output_path=None,
protocol_parse_conf=None,
is_handle_tcp=1,
is_handle_udp=1,
is_handle_ip=1,
sqlite3_output_enable=1,
sqlite3_output_path=None,
sqlite3_output_schema=None,
sqlite3_renew=False):
"""
Args:
pcap_file:
device:
bpf_filter:
dst_port_filter:
dst_ip_filter:
src_port_filter:
src_ip_filter:
data_level:
data_stream_direct:
std_output_enable:
file_tcpsession_path:
protocol_parse_conf:
"""
self.is_handle_tcp = is_handle_tcp
self.is_handle_udp = is_handle_udp
self.is_handle_ip = is_handle_ip
self.bpf_filter = bpf_filter
self.dst_tcp_port_filter = dst_tcp_port_filter
self.dst_tcp_ip_filter = dst_tcp_ip_filter
self.src_tcp_port_filter = src_tcp_port_filter
self.src_tcp_ip_filter = src_tcp_ip_filter
self.udp_ip_filter = udp_ip_filter
self.udp_port_filter = udp_port_filter
self.device = device
self.pcap_file = pcap_file
if pcap_file:
nids.param("filename", pcap_file)
elif device:
nids.param("device", device)
if bpf_filter:
nids.param("pcap_filter",
bpf_filter) ## bpf restrict to TCP only, note
self.data_level = data_level
self.data_stream_direct = data_stream_direct
self.std_output_enable = std_output_enable
self.file_output_path = file_output_path
self.protocol_parse_conf = protocol_parse_conf
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("pcap_timeout", 64)
nids.param("multiproc", 1)
nids.param("tcp_workarounds", 1)
# sqlite3 conf which store ip_handle statistic info
self.sqlite3_output_enable = sqlite3_output_enable
self.sqlite3_output_path = sqlite3_output_path
self.sqlite3_output_schema = sqlite3_output_schema
self.sqlite3_renew = sqlite3_renew
# local ip
if self.is_handle_ip:
self.local_ip = networktools.get_local_ip(self.device)
# var
self.tcp_file_fh = None
self.udp_file_fh = None
self.ip_file_fh = None
self.app_proto_fhs = {}
if self.file_output_path:
# 设置文件输出
if os.path.exists(self.file_output_path) and os.path.isdir(
self.file_output_path):
# delete old data
mills.rm_dir(self.file_output_path)
os.mkdir(self.file_output_path)
tcp_file_path = mills.path(self.file_output_path, "tcp.txt")
self.tcp_file_fh = codecs.open(tcp_file_path,
mode='wb',
encoding='utf-8',
errors='ignore')
udp_file_path = mills.path(self.file_output_path, "udp.txt")
self.udp_file_fh = codecs.open(udp_file_path,
mode='wb',
encoding='utf-8',
errors='ignore')
ip_file_path = mills.path(self.file_output_path, "ip.txt")
self.ip_file_fh = codecs.open(ip_file_path,
mode='wb',
encoding='utf-8',
errors='ignore')
port_list = set()
proto_list = set()
for port_filter in [
self.dst_tcp_port_filter, self.src_tcp_port_filter,
self.udp_port_filter
]:
for port in port_filter:
port_list.add(port)
for port in port_list:
protocol = self.which_protocol_parse(port)
if protocol:
proto_list.add(protocol)
for protocol in proto_list:
protocol_file_path = mills.path(self.file_output_path,
"%s.txt" % protocol)
protocol_file_fh = codecs.open(protocol_file_path,
mode='wb',
encoding='utf-8',
errors='ignore')
self.app_proto_fhs[protocol] = protocol_file_fh
if options.filename is "":
chop.prnt("Empty Filename")
self.complete = True
return
nids.param("scan_num_hosts",0)
nids.param("filename",options.filename)
try:
nids.init()
except Exception, e:
self.complete = True
chop.prnt("Error initting: ", e)
return
nids.chksum_ctl([('0.0.0.0/0',False),])
nids.register_tcp(handleTcpStreams)
nids.register_udp(handleUdpDatagrams)
while(True): #This overall while prevents exceptions from halting the long running reading
if self.stopped:
break
try:
if options.longrun: #long running don't stop until the proces is killed externally
while not self.stopped:
if not nids.next():
time.sleep(.001)
else:
while not self.stopped and nids.next():
pass
self.stopped = True #Force it to true and exit
def TcpHandler(tcp):
if tcp.nids_state == nids.NIDS_JUST_EST:
tcp.server.collect = 1
tcp.client.collect = 1
elif tcp.nids_state == nids.NIDS_DATA:
tcp.discard(0) # keep data
elif tcp.nids_state in [nids.NIDS_CLOSE, nids.NIDS_TIMEOUT, nids.NIDS_RESET]:
((src, sport), (dst, dport)) = tcp.addr
print "==========================(%s:%d <--> %s:%d)==========================" % (src, sport, dst, dport)
print tcp.server.data[:tcp.server.count]
print tcp.client.data[:tcp.client.count]
if len(sys.argv) < 2:
print("usage : ./13_pynids_sample.py pcap_file")
print("")
exit(1)
# set libnids parameters
#nids.param("pcap_filter", "tcp")
nids.param("scan_num_hosts", 0)
nids.chksum_ctl([('0.0.0.0/0', False), ('::', False)])
nids.param("filename", sys.argv[1])
print "pcap_file=%s" % sys.argv[1]
nids.init()
nids.register_tcp(TcpHandler)
nids.run()
"src_port": sport,
"dst_ip": dst,
"dst_port": dport,
"time": start_time[tcp.addr],
"duration": (ts - start_time[tcp.addr]),
"contains_flag": contains_flag[tcp.addr],
"starred": 0,
"flow": current_data
}
flows_to_import.append(flow)
del data_flow[tcp.addr]
nids.param("pcap_filter", "tcp") # restrict to TCP only
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
if len(sys.argv) == 2:
filename = sys.argv[1]
if "./" in filename:
filename = filename[2:]
print("importing pcaps from " + filename)
nids.param("filename", filename)
else:
print("pcap file required")
exit()
nids.init()
nids.register_tcp(handleTcpStream)
nids.run()
def __init__(self,
pcap_file=None,
device=None,
bpf_filter="tcp",
dst_port_filter=None,
dst_ip_filter=None,
data_level=1,
data_stream_direct=2,
std_output_enable=1,
file_tcpsession_path=None,
protocol_parse_conf=None):
"""
:param pcap_file:
:param device:
:param bpf_filter:
:param dst_port_filter:
:param dst_ip_filter:
:param data_level:
:param data_stream_direct:
:param is_human_print:
:param file_output_file:
"""
self.dst_port_filter = dst_port_filter
self.dst_ip_filter = dst_ip_filter
self.device = device
self.pcap_file = pcap_file
if pcap_file:
nids.param("filename", pcap_file)
elif device:
nids.param("device", device)
if bpf_filter:
nids.param("pcap_filter",
bpf_filter) ## bpf restrict to TCP only, note
self.data_level = data_level
self.data_stream_direct = data_stream_direct
self.std_output_enable = std_output_enable
self.file_tcpsession_path = file_tcpsession_path
self.protocol_parse_conf = protocol_parse_conf
nids.param("scan_num_hosts", 0) # disable portscan detection
nids.chksum_ctl([('0.0.0.0/0', False)]) # disable checksumming
nids.param("pcap_timeout", 64)
nids.param("multiproc", 1)
nids.param("tcp_workarounds", 1)
self.file_hd_tcpsession = None
self.file_hd_tcpsession_parse = None
if self.file_tcpsession_path:
self.file_hd_tcpsession = codecs.open(self.file_tcpsession_path,
mode='wb',
encoding='utf-8',
errors='ignore')
if self.data_stream_direct == 2:
file_tcpsession_path_parse = "%s_parse" % self.file_tcpsession_path
self.file_hd_tcpsession_parse = codecs.open(
file_tcpsession_path_parse,
mode='wb',
encoding='utf-8',
errors='ignore')
class ChopCore(Thread):
def __init__(self, options, module_list, chp, chophelper):
Thread.__init__(self)
self.options = options
self.module_list = module_list
self.chophelper = chophelper
self.stopped = False
self.complete = False
self.abort = False
global chop
chop = chp
def stop(self):
self.complete = True
self.stopped = True
def iscomplete(self):
return self.complete
def getptime(self):
global ptimestamp
return ptimestamp
def getmeta(self):
global metadata
return metadata
def prep_modules(self):
self.chophelper.set_core(self)
modules = self.module_list
for module in modules:
code = module.code
code.chop = self.chophelper.setup_module(code.moduleName)
def run(self):
global chop
#Initialize modules to be run
options = self.options
modules = self.module_list #module_list
module_options = {}
chop.prettyprnt("RED", "Initializing Modules ...")
for module in modules:
name = module.name
arguments = module.arguments #shlex.split(module[1])
code = module.code #module[0]
#Create module_data for all modules
module.module_data = {'args': arguments}
module.streaminfo = {}
chop.prettyprnt("CYAN", "\tInitializing module '" + name + "'")
try:
module_options = code.init(module.module_data)
except Exception, e:
chop.prnt("Error Initializing Module", code.moduleName + ":",
e)
self.complete = True
return
if 'error' in module_options:
chop.prettyprnt(
"GREEN", "\t\t%s init failure: %s" %
(code.moduleName, module_options['error']))
continue
if module.legacy:
if module_options['proto'] == 'tcp':
tcp_modules.append(module)
all_modules.append(module)
module.streaminfo['tcp'] = {}
elif module_options['proto'] == 'ip':
ip_modules.append(module)
all_modules.append(module)
module.streaminfo['ip'] = {}
elif module_options['proto'] == 'udp':
udp_modules.append(module)
all_modules.append(module)
module.streaminfo['udp'] = {}
else:
chop.prnt("Undefined Module Type\n")
self.complete = True
return
else:
all_modules.append(module)
#Proto is an array of dictionaries
if not isinstance(module_options['proto'], list): #Malformed
chop.prnt("%s has malformed proto list" %
module.code.moduleName)
self.complete = True
return
for proto in module_options['proto']:
#Right now (4.0) each dictionary only has one key
#This might change in the future but should be easy
#since it's already a separate dictionary
if type(proto) is not dict:
chop.prnt("%s has malformed proto list" %
module.code.moduleName)
self.complete = True
return
for input in proto.keys():
if input not in module.inputs:
module.inputs[input] = []
if proto[input] != '':
module.inputs[input].append(proto[input])
module.outputs.append(proto[input])
#Initialize the streaminfo array by type
if input != 'any' and input != 'ip':
module.streaminfo[input] = {}
if input == 'tcp':
tcp_modules.append(module)
elif input == 'udp':
udp_modules.append(module)
elif input == 'ip':
ip_modules.append(module)
elif input == 'any': #Special input that catches all non-core types
#Initialize the streaminfo for all parents of the 'any' module
if not len(module.parents):
chop.prettyprnt(
"GREEN",
"WARNING: No Parent for %s to provide data"
% (module.code.moduleName))
else:
for parent in module.parents:
for output in parent.outputs:
module.streaminfo[output] = {}
else: # non-core types, e.g., 'http' or 'dns'
if len(module.parents
): #Make sure parents give it what it wants
for parent in module.parents:
if input not in parent.outputs:
chop.prettyprnt(
"GREEN",
"WARNING: Parent to %s not providing %s data"
% (module.code.moduleName, input))
else:
chop.prettyprnt(
"GREEN",
"WARNING: No Parent for %s providing %s data"
% (module.code.moduleName, input))
if not all_modules:
chop.prnt("No modules")
self.complete = True
return
chop.prettyprnt("RED", "Running Modules ...")
#Actually run the modules
if options['interface']:
nids.param("scan_num_hosts", 0)
nids.param("device", options['interface'])
if options['bpf'] is not None:
nids.param("pcap_filter", options['bpf'])
try:
nids.init()
except Exception, e:
chop.prnt("Error initting on interface: ", e)
self.complete = True
return
nids.chksum_ctl([
('0.0.0.0/0', False),
])
nids.register_tcp(handleTcpStreams)
nids.register_udp(handleUdpDatagrams)
nids.register_ip(handleIpPackets)
while (
True
): #This overall while prevents exceptions from halting the processing of packets
if self.stopped:
break
try:
while not self.stopped:
nids.next()
time.sleep(.001) #XXX is this enough or too much?
except Exception, e:
chop.prnt("Error processing packets", e)
class ChopCore(Thread):
def __init__(self,options, module_list, chp, chophelper):
Thread.__init__(self)
self.options = options
self.module_list = module_list
self.chophelper = chophelper
self.stopped = False
self.complete = False
global chop
chop = chp
def stop(self):
self.complete = True
self.stopped = True
def iscomplete(self):
return self.complete
def getptime(self):
global ptimestamp
return ptimestamp
def getmeta(self):
global metadata
return metadata
def prep_modules(self):
self.chophelper.set_core(self)
modules = self.module_list
for module in modules:
module = module[0]
module.chop = self.chophelper.setup_module(module.moduleName)
def run(self):
global chop
#Initialize modules to be run
options = self.options
modules = self.module_list#module_list
module_options = {}
chop.prettyprnt("RED", "Initializing Modules ...")
for module in modules:
name = module[2]
arguments = shlex.split(module[1])
module = module[0]
#Create module_data for all modules
module.module_data = {'args':arguments}
module.streaminfo = {}
chop.prettyprnt("CYAN", "\tInitializing module '" + name + "'")
try:
module_options = module.init(module.module_data)
except Exception, e:
chop.prnt("Error Initializing Module", module.moduleName + ":", e)
self.complete = True
return
if 'error' in module_options:
chop.prettyprnt("GREEN", "\t\t%s init failure: %s" % (module.moduleName, module_options['error']))
continue
if module_options['proto'] == 'tcp' :
tcp_modules.append(module)
all_modules.append(module)
elif module_options['proto'] == 'ip' :
ip_modules.append(module)
all_modules.append(module)
elif module_options['proto'] == 'udp' :
udp_modules.append(module)
all_modules.append(module)
else:
chop.prnt("Undefined Module Type\n")
self.complete = True
return
if not all_modules:
chop.prnt("No modules")
self.complete = True
return
chop.prettyprnt("RED", "Running Modules ...")
#Actually run the modules
if options['interface']:
nids.param("scan_num_hosts",0)
nids.param("device",options['interface'])
if options['bpf'] is not None:
nids.param("pcap_filter", options['bpf'])
try:
nids.init()
except Exception, e:
chop.prnt("Error initting: ", e)
self.complete = True
return
nids.chksum_ctl([('0.0.0.0/0',False),])
nids.register_tcp(handleTcpStreams)
nids.register_udp(handleUdpDatagrams)
while(True): #This overall while prevents exceptions from halting the processing of packets
if self.stopped:
break
try:
while not self.stopped:
nids.next()
time.sleep(.001) #XXX is this enough or too much?
except Exception, e:
chop.prnt("Error processing packets", e)
self.complete = True
return
nids.param("scan_num_hosts", 0)
nids.param("filename", options["filename"])
if options["bpf"] is not None:
nids.param("pcap_filter", options["bpf"])
try:
nids.init()
except Exception, e:
self.complete = True
chop.prnt("Error initting: ", e)
return
nids.chksum_ctl([("0.0.0.0/0", False)])
nids.register_tcp(handleTcpStreams)
nids.register_udp(handleUdpDatagrams)
while True: # This overall while prevents exceptions from halting the long running reading
if self.stopped:
break
try:
if options["longrun"]: # long running don't stop until the proces is killed externally
while not self.stopped:
if not nids.next():
time.sleep(0.001)
else:
while not self.stopped and nids.next():
pass
self.stopped = True # Force it to true and exit
