-
Notifications
You must be signed in to change notification settings - Fork 1
/
traceroute.py
226 lines (181 loc) · 6.29 KB
/
traceroute.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
import errno
import functools
import socket
import datetime
import os
import signal
import gifplugin as GifImagePlugin
from images2gif import GifWriter
from io import BytesIO
from tornado import ioloop, iostream, process
from PIL import Image, ImageFont, ImageDraw
BASE_PATH = os.path.dirname(os.path.realpath(__file__))
HEADER_DATA = None
CLOSE_ON_TIMEOUT = True
BIND_ADDR = "0.0.0.0"
BIND_PORT = 80
TIME_STEP = 1
MAX_TIME = 40
NUM_LINES_DISPLAY = 7
LINE_SPACING = 14
MARGIN = 2
FONT = ImageFont.truetype(os.path.join(BASE_PATH, "anony.ttf"), 12)
streams = []
gifWriter = GifWriter()
gifWriter.transparency = False
def _get_init_img_frame():
img = Image.new("RGB", (600,100))
draw = ImageDraw.Draw(img)
for i,line in enumerate(["", "", " -- LOADING TRACEROUTE -- ", "", "", ""]):
draw.text((MARGIN,MARGIN+(i*LINE_SPACING)), line, (0,255,0), font=FONT)
img = img.convert("P")
palette = img.im.getpalette("RGB")[:768]
rio = BytesIO()
data = GifImagePlugin.getdata(img)
imdes, data = data[0], data[1:]
graphext = gifWriter.getGraphicsControlExt(duration=TIME_STEP)
rio.write(graphext)
rio.write(imdes)
for d in data:
rio.write(d)
return rio.getvalue()
INITIAL_FRAME = _get_init_img_frame()
def get_header_data():
rio = BytesIO()
img = Image.new("RGB", (600,100))
img = img.convert("P")
palette = img.im.getpalette("RGB")[:768]
header = gifWriter.getheaderAnim(img)
appext = gifWriter.getAppExt(1) #num loops
rio.write(header)
rio.write(palette)
rio.write(appext)
return rio.getvalue()
def connection_ready(sock, fd, events):
while True:
try:
connection, address = sock.accept()
except socket.error, e:
if e[0] not in (errno.EWOULDBLOCK, errno.EAGAIN):
raise
return
connection.setblocking(0)
handle_connection(connection, address)
def _handle_headers(stream, data):
lines = data.split("\r\n")
request,headers = lines[0],lines[1:-2]
for header in headers:
try:
param,val = map(str.strip, header.split(":"))
except ValueError:
continue
if param == "User-Agent":
ua = val.lower()
is_mobile = bool(sum([x in ua for x in ['android', 'webos', 'iphone', 'ipad', 'ipod', 'blackberry', 'windows phone']]))
if is_mobile:
stream.close()
def closestream(stream, traceroute_proc):
_kill_traceroute(traceroute_proc)
if not stream.closed():
stream.write(";")
stream.close()
def _kill_traceroute(traceroute_proc):
try:
os.killpg(traceroute_proc.pid, signal.SIGTERM)
except OSError:
pass
def _handleResult(output_buffer, result):
output_buffer.extend(result.split("\n"))
def handle_connection(connection, address):
stream = iostream.IOStream(connection)
callback = functools.partial(_handle_headers, stream)
stream.read_until("\r\n\r\n", callback)
stream.write("HTTP/1.0 200 OK\r\n")
stream.write("Content-Type: image/gif\r\n")
stream.write("\r\n")
stream.write(HEADER_DATA)
stream.write(INITIAL_FRAME)
#exec traceroute against host ip
remote_ip = address[0]
traceroute_proc = process.Subprocess(['mtr', '-c', '3', '-r', '-o', 'LSD BAW', remote_ip], stdout=process.Subprocess.STREAM)
traceroute_proc.initialize()
output_buffer = []
_cb = functools.partial(_handleResult, output_buffer)
result = traceroute_proc.stdout.read_until_close(callback=_cb, streaming_callback=_cb)
if CLOSE_ON_TIMEOUT:
callback = functools.partial(closestream, stream, traceroute_proc)
ioloop.IOLoop.instance().add_timeout(datetime.timedelta(seconds=MAX_TIME), callback)
streams.append((stream, traceroute_proc, output_buffer, 0))
def send_latest():
global streams
new_streams = []
for stream, traceroute_proc, output_buffer, frame_number in streams:
if stream.closed():
_kill_traceroute(traceroute_proc)
else:
latest_gif,new_frame_number,done = get_img_frame(output_buffer, frame_number)
stream.write(latest_gif)
if done:
closestream(stream, traceroute_proc)
else:
new_streams.append((stream, traceroute_proc, output_buffer, new_frame_number))
del streams
streams = new_streams
def gen_img(output_buffer, frame_number):
img = Image.new("RGB", (600,100))
draw = ImageDraw.Draw(img)
done = False
bufferlen = len(output_buffer)
if bufferlen > 0:
new_frame_number = frame_number+1
else:
new_frame_number = 0
if (frame_number * TIME_STEP) > 5:
if new_frame_number > bufferlen:
done = True
c = 0
i = frame_number
underrun = False
if bufferlen < NUM_LINES_DISPLAY:
underrun = True
i = 0
while bufferlen > 0 and c < NUM_LINES_DISPLAY:
i = i % bufferlen
line = output_buffer[i]
if underrun and c >= bufferlen:
line = ""
draw.text((MARGIN,MARGIN+(c*LINE_SPACING)), line, (0,255,0), font=FONT)
c += 1
i += 1
img = img.convert("P")
palette = img.im.getpalette("RGB")[:768]
return img, palette, new_frame_number, done
def get_img_frame(output_buffer, frame_number):
img, palette, new_frame_number, done = gen_img(output_buffer, frame_number)
rio = BytesIO()
data = GifImagePlugin.getdata(img)
imdes, data = data[0], data[1:]
graphext = gifWriter.getGraphicsControlExt(duration=TIME_STEP)
rio.write(graphext)
rio.write(imdes)
for d in data:
rio.write(d)
return rio.getvalue(), new_frame_number, done
if __name__ == '__main__':
HEADER_DATA = get_header_data()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.setblocking(0)
sock.bind((BIND_ADDR, BIND_PORT))
sock.listen(5000)
io_loop = ioloop.IOLoop.instance()
callback = functools.partial(connection_ready, sock)
io_loop.add_handler(sock.fileno(), callback, io_loop.READ)
send_loop = ioloop.PeriodicCallback(send_latest, TIME_STEP*1000)
send_loop.start()
try:
io_loop.start()
except KeyboardInterrupt:
send_loop.stop()
io_loop.stop()
print "exited cleanly"