|
| 1 | +import sys |
| 2 | +import socket |
| 3 | + |
| 4 | +def resolve_host(ip): |
| 5 | + try: |
| 6 | + return socket.gethostbyaddr(ip)[0] |
| 7 | + except: |
| 8 | + return None |
| 9 | + |
| 10 | +def convert_numbers(obj): |
| 11 | + if isinstance(obj, dict): |
| 12 | + for k, v in obj.iteritems(): |
| 13 | + obj[k] = convert_numbers(v) |
| 14 | + elif isinstance(obj, list): |
| 15 | + new = [convert_numbers(v) for v in obj] |
| 16 | + del obj[:] |
| 17 | + obj.extend(new) |
| 18 | + elif hasattr(obj, '__iter__'): |
| 19 | + for v in obj: |
| 20 | + convert_numbers(v) |
| 21 | + elif isinstance(obj, basestring): |
| 22 | + if obj.isdigit(): |
| 23 | + return int(obj) |
| 24 | + return obj |
| 25 | + |
| 26 | + |
| 27 | +class MSNT_SystemTraceDecoder: |
| 28 | + def __init__(self, parser, args, callbacks): |
| 29 | + self.parser, self.args, self.callbacks = parser, args, callbacks |
| 30 | + self.tcpip = {} |
| 31 | + |
| 32 | + @staticmethod |
| 33 | + def resolve_host(data, field): |
| 34 | + host = resolve_host(data[field]) |
| 35 | + if host: |
| 36 | + data['%s_resolved' % field] = host |
| 37 | + |
| 38 | + def handle_record(self, system, data, info): |
| 39 | + if info['EventName'] in ['TcpIp', 'UdpIp']: |
| 40 | + if info['Opcode'] in ['Fail']: |
| 41 | + return |
| 42 | + pid = data['PID'] |
| 43 | + now = self.parser.convert_time(system['time']) |
| 44 | + if info['Opcode'] in ['ConnectIPV4', 'ReconnectIPV4', 'DisconnectIPV4', 'AcceptIPV4', 'TCPCopyIPV4']: |
| 45 | + target_thread = self.callbacks.process(pid).thread(0, 'TcpIp/UDP') |
| 46 | + self.resolve_host(data, 'daddr') |
| 47 | + self.resolve_host(data, 'saddr') |
| 48 | + target_thread.object(id(data), info['Opcode']).snapshot(now, args=data) |
| 49 | + return |
| 50 | + target = data['daddr'] + ':' + data['dport'] |
| 51 | + source = data['saddr'] + ':' + data['sport'] |
| 52 | + if info['Opcode'] in ['SendIPV4', 'SendIPV6']: # gather all sends by target |
| 53 | + receiver = self.tcpip.setdefault(target, {'packets':[], 'started': None}) |
| 54 | + receiver['packets'].append({'pid': pid, 'size': data['size'], 'source': source, 'time': system['time'], 'type': info['EventName']}) |
| 55 | + self.end_receiver(receiver) |
| 56 | + self.callbacks.process(pid).thread(0, 'TcpIp/UDP').marker('thread', 'SendIPV4').set(now, args=data) |
| 57 | + elif info['Opcode'] in ['RecvIPV4', 'RecvIPV6']: # on each receive take all ready packets for this 'source' |
| 58 | + self.callbacks.process(pid).thread(0, 'TcpIp/UDP').marker('thread', 'RecvIPV4').set(now, args=data) |
| 59 | + self.on_receive(data['size'], now, pid, source, target) |
| 60 | + elif info['EventName'] == 'SystemConfig': |
| 61 | + if info['Opcode'] in ['Video', 'NIC', 'PhyDisk', 'LogDisk', 'CPU', 'Platform']: |
| 62 | + self.callbacks.add_metadata(info['Opcode'], convert_numbers(data)) |
| 63 | + elif sys.gettrace(): |
| 64 | + print 'EventName:', info['EventName'], 'Opcode:', info['Opcode'] |
| 65 | + |
| 66 | + def on_receive(self, size, now, pid, source, target): |
| 67 | + receiver = self.tcpip.setdefault(source, {'packets': [], 'started': None}) |
| 68 | + if receiver['packets']: |
| 69 | + if 'pid' in receiver: |
| 70 | + assert (receiver['pid'] == pid) |
| 71 | + else: |
| 72 | + receiver['pid'] = pid |
| 73 | + start_time = min(packet['time'] for packet in receiver['packets']) |
| 74 | + end_time = max(packet['time'] for packet in receiver['packets']) + 1000 |
| 75 | + sent = [int(packet['size']) for packet in receiver['packets']] |
| 76 | + target_thread = self.callbacks.process(pid).thread(0, 'TcpIp/UDP') |
| 77 | + packet = receiver['packets'][0] # all packets to this target are considered to be from the same source |
| 78 | + target_task = target_thread.task('Recv').begin(now, args={'from': target, 'own': source}) |
| 79 | + source_thread = self.callbacks.process(packet['pid']).thread(0, 'TcpIp/UDP') |
| 80 | + source_task = source_thread.task(packet['type']).begin( |
| 81 | + self.parser.convert_time(start_time), |
| 82 | + args={'sent': sent, 'to': packet['source'], 'own': target} |
| 83 | + ) |
| 84 | + source_task.relate(target_task) |
| 85 | + source_task.end(end_time) |
| 86 | + assert (not receiver['started']) |
| 87 | + target_task.sizes = [] |
| 88 | + receiver['started'] = target_task |
| 89 | + receiver['packets'] = [] |
| 90 | + if receiver['started']: |
| 91 | + receiver['started'].sizes.append(int(size)) |
| 92 | + receiver['started'].end_time = now + 1000 |
| 93 | + |
| 94 | + @classmethod |
| 95 | + def get_providers(cls): |
| 96 | + return ['MSNT_SYSTEMTRACE'] |
| 97 | + |
| 98 | + @staticmethod |
| 99 | + def end_receiver(receiver): |
| 100 | + if receiver['started']: |
| 101 | + target_task = receiver['started'] |
| 102 | + target_task.add_args({'received': target_task.sizes}) |
| 103 | + target_task.end(target_task.end_time) |
| 104 | + receiver['started'] = None |
| 105 | + |
| 106 | + def finalize(self): |
| 107 | + for target, receiver in self.tcpip.iteritems(): |
| 108 | + self.end_receiver(receiver) |
| 109 | + packets = receiver['packets'] |
| 110 | + if packets: |
| 111 | + if 'pid' in receiver: |
| 112 | + pid = receiver['pid'] |
| 113 | + now = self.parser.convert_time(max(packet['time'] for packet in packets)) + 1000 |
| 114 | + packet = receiver['packets'][0] # all packets to this target are considered to be from the same source |
| 115 | + self.on_receive(0, now, pid, target, packet['source']) |
| 116 | + self.end_receiver(receiver) |
| 117 | + else: |
| 118 | + pass # not sure what to do with these remnants yet... |
| 119 | + |
| 120 | + |
| 121 | +DECODER_DESCRIPTORS = [{ |
| 122 | + 'format': 'etw', |
| 123 | + 'available': True, |
| 124 | + 'decoder': MSNT_SystemTraceDecoder |
| 125 | +}] |
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