forked from henkpls/SIPPing
-
Notifications
You must be signed in to change notification settings - Fork 0
/
sipping.py
executable file
·434 lines (365 loc) · 16 KB
/
sipping.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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# -*- Mode: Python -*-
#
# Copyright (C) 2013 snom technology <[email protected]>
#
# This program is available under the Lesser General Public Licence (LGPL) Version 3
# This software is released for didactical and debugging purposes. You're free to use it at your own risk.
import socket
import time
import sys
import optparse
import select
import cStringIO
import re
from string import Template
def_request = """OPTIONS sip:%(dest_ip)s:%(dest_port)s SIP/2.0
Via: SIP/2.0/UDP %(source_ip)s:%(source_port)s
Max-Forwards: 70
From: "fake" <sip:fake@%(source_ip)s>
To: <sip:%(dest_ip)s:%(dest_port)s>
Contact: <sip:fake@%(source_ip)s:%(source_port)s>
Call-ID: fake-id@%(source_ip)s
User-Agent: SIPPing
Date: Wed, 24 Apr 2013 20:35:23 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer"""
def_out = ""
class CustomTemplate(Template):
idpattern = r'[a-z][\.\-_a-z0-9]*'
class SipError(Exception):
pass
class SipUnpackError(SipError):
pass
class SipNeedData(SipUnpackError):
pass
class SipPackError(SipError):
pass
def canon_header(s):
exception = {
'call-id': 'Call-ID',
'cseq': 'CSeq',
'www-authenticate': 'WWW-Authenticate'
}
short = ['allow-events', 'u', 'call-id', 'i', 'contact', 'm', 'content-encoding', 'e',
'content-length', 'l', 'content-type', 'c', 'event', 'o', 'from', 'f', 'subject', 's', 'supported', 'k', 'to', 't', 'via', 'v']
s = s.lower()
return ((len(s) == 1) and s in short and canon_header(short[short.index(s) - 1])) \
or (s in exception and exception[s]) or '-'.join([x.capitalize() for x in s.split('-')])
def parse_headers(f):
"""Return dict of HTTP headers parsed from a file object."""
d = {}
while 1:
line = f.readline().strip()
if not line:
break
l = line.split(None, 1)
if not l[0].endswith(':'):
raise SipUnpackError('invalid header: %r' % line)
k = l[0][:-1].lower()
d[k] = len(l) != 1 and l[1] or ''
return d
def parse_body(f, headers):
"""Return SIP body parsed from a file object, given HTTP header dict."""
if 'content-length' in headers:
n = int(headers['content-length'])
body = f.read(n)
if len(body) != n:
raise SipNeedData('short body (missing %d bytes)' % (n - len(body)))
elif 'content-type' in headers:
body = f.read()
else:
body = ''
return body
class Message:
"""SIP Protocol headers + body."""
__metaclass__ = type
__hdr_defaults__ = {}
headers = None
body = None
def __init__(self, *args, **kwargs):
if args:
self.unpack(args[0])
else:
self.headers = {}
self.body = ''
for k, v in self.__hdr_defaults__.iteritems():
setattr(self, k, v)
for k, v in kwargs.iteritems():
setattr(self, k, v)
def unpack(self, buf):
f = cStringIO.StringIO(buf)
# Parse headers
self.headers = parse_headers(f)
# Parse body
self.body = parse_body(f, self.headers)
# Save the rest
self.data = f.read()
def pack_hdr(self):
return ''.join(['%s: %s\r\n' % (canon_header(k), v) for k, v in self.headers.iteritems()])
def __len__(self):
return len(str(self))
def __str__(self):
return '%s\r\n%s' % (self.pack_hdr(), self.body)
class Request(Message):
"""SIP request."""
__hdr_defaults__ = {
'method': 'INVITE',
'uri': 'sip:[email protected]',
'version': '2.0',
'headers': {'to': '', 'from': '', 'call-id': '', 'cseq': '', 'contact': ''}
}
__methods = dict.fromkeys((
'ACK', 'BYE', 'CANCEL', 'INFO', 'INVITE', 'MESSAGE', 'NOTIFY',
'OPTIONS', 'PRACK', 'PUBLISH', 'REFER', 'REGISTER', 'SUBSCRIBE',
'UPDATE'
))
__proto = 'SIP'
def unpack(self, buf):
f = cStringIO.StringIO(buf)
line = f.readline()
l = line.strip().split()
if len(l) != 3 or l[0] not in self.__methods or not l[2].startswith(self.__proto):
raise SipUnpackError('invalid request: %r' % line)
self.method = l[0]
self.uri = l[1]
self.version = l[2][len(self.__proto) + 1:]
Message.unpack(self, f.read())
def __str__(self):
return '%s %s %s/%s\r\n' % (self.method, self.uri, self.__proto,
self.version) + Message.__str__(self)
class Response(Message):
"""SIP response."""
__hdr_defaults__ = {
'version': '2.0',
'status': '200',
'reason': 'OK',
'headers': {'to': '', 'from': '', 'call-id': '', 'cseq': '', 'contact': ''}
}
__proto = 'SIP'
def unpack(self, buf):
f = cStringIO.StringIO(buf)
line = f.readline()
l = line.strip().split(None, 2)
if len(l) < 2 or not l[0].startswith(self.__proto) or not l[1].isdigit():
raise SipUnpackError('invalid response: %r' % line)
self.version = l[0][len(self.__proto) + 1:]
self.status = l[1]
self.reason = l[2]
Message.unpack(self, f.read())
def __str__(self):
return '%s/%s %s %s\r\n' % (self.__proto, self.version, self.status,
self.reason) + Message.__str__(self)
def render_template(template, template_vars):
for k in template_vars.keys():
if k.startswith("."):
template_vars[k[1:]] = eval(template_vars[k])
try:
ret = template % template_vars
except KeyError, e:
sys.stderr.write("ERROR: missing template variable. %s\n" % e)
sys.exit(-1)
except Exception, e:
sys.stderr.write("ERROR: error in template processing. %s\n" % e)
sys.exit(-1)
return ret
def gen_request(template_vars, options):
for i in xrange(options.count):
template_vars["seq"] = i
for k in template_vars.keys():
if k.startswith("."):
template_vars[k[1:]] = eval(template_vars[k])
if options.request_template is None:
request = render_template(def_request, template_vars)
else:
try:
f = open(options.request_template)
file_request = f.read()
f.close()
request = render_template(file_request, template_vars)
except Exception, e:
sys.stderr.write("ERROR: cannot open file %s. %s\n" % (options.request_template, e))
sys.exit(-1)
try:
req = Request(request)
except SipUnpackError, e:
sys.stderr.write("ERROR: malformed SIP Request. %s\n" % e)
sys.exit(-1)
if "cseq" not in req.headers:
req.headers["cseq"] = "%d %s" % (i, req.method)
yield str(req)
def open_sock(options):
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
sock.setblocking(0)
except Exception, e:
sys.stderr.write("ERROR: cannot create socket. %s\n" % e)
sys.exit(-1)
try:
sock.seckopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.seckopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
except AttributeError:
pass
if options.source_port:
sock.bind((options.source_ip, options.source_port))
sock.settimeout(options.wait)
return sock
def print_reply(buf, template_vars=None, out_regex=None, out_replace=None, err=None, verbose=False, quiet=False):
src_ip = buf[1][0]
src_port = buf[1][1]
template_vars['sock_src_ip'] = src_ip
template_vars['sock_src_port'] = src_port
try:
resp = Response(buf[0])
except SipUnpackError, e:
resp = Request(buf[0])
if resp.__class__.__name__ == "Response":
template_vars['status'] = resp.status
template_vars['reason'] = resp.reason
if not out_regex:
out_regex = '(.*\n)*'
if not out_replace:
out_replace = "received Response %(status)s %(reason)s from %(sock_src_ip)s:%(sock_src_port)s cseq=%(seq)s\n" % template_vars
elif resp.__class__.__name__ == "Request":
template_vars['method'] = resp.method
template_vars['uri'] = resp.uri
if not out_replace:
out_regex = '(.*\n)*'
if not out_replace:
out_replace = "received Request %(method)s %(uri)s from %(sock_src_ip)s:%(sock_src_port)s cseq=%(seq)s\n" % template_vars
if verbose:
sys.stderr.write("%s\n" % resp)
if True:
try:
out = re.sub(out_regex, out_replace, "%s" % resp)
# replaced_out = CustomTemplate(out).safe_substitute(template_vars)
replaced_out = out % template_vars
print replaced_out
except Exception, e:
sys.stderr.write("ERROR: an issue is occoured applying regex substitution:\n")
sys.stderr.write("\t-----------------------------------\n")
sys.stderr.write("\t%s\n" % e)
sys.stderr.write("\t-----------------------------------\n")
sys.stderr.write("\tTemplate vars:\n")
for k in template_vars:
sys.stderr.write("\t\t%s:'%s'\n" % (k, template_vars[k]))
sys.stderr.write("\tRegex: '%s'\n" % out_regex)
sys.stderr.write("\tSubstitution string: '%s'\n" % out_replace)
sys.stderr.write("\tSubstitution text: '%s'\n" % replaced_out)
sys.stderr.write("\tResponse: \n")
sys.stderr.write("\t-----------------------------------\n\t")
sys.stderr.write("\n\t".join(resp.__str__().split("\n")))
sys.stderr.write("-----------------------------------\n")
sys.stderr.write("%s\n" % resp)
return True
def main():
usage = """%prog [OPTIONS]"""
opt = optparse.OptionParser(usage=usage)
opt.add_option('-c', dest='count', type='int', default=sys.maxint,
help='Total number of queries to send')
opt.add_option('-i', dest='wait', type='float', default=1,
help='Specify packet send interval time in seconds')
opt.add_option('-T', dest='timeout', type='float', default=1,
help='Specify receiving timeout in seconds')
opt.add_option('-v', dest='var', type='string', default=[""], action='append',
help='add a template variable in format varname:value')
opt.add_option('-V', dest='verbose', default=False, action='store_true',
help='be verbose dumping full requests / responses')
opt.add_option('-q', dest='quiet', default=False, action='store_true',
help='be quiet and never print any report')
opt.add_option('-a', dest='aggressive', default=False, action='store_true',
help='aggressive mode: ignore any response')
opt.add_option('-S', dest='source_ip', type='string', default="0.0.0.0",
help='Specify ip address to bind for sending and receiving UDP datagrams')
opt.add_option('-P', dest='source_port', type='int', default=5060,
help='Specify the port number to use as a source port in UDP datagrams')
opt.add_option('-d', dest='dest_ip', type='string', default=None,
help='*mandatory* Specify the destination ip address')
opt.add_option('-p', dest='dest_port', type='int', default=5060,
help='*mandatory* Specify the destination port number')
opt.add_option('-r', dest='request_template', type='string', default=None,
help='Specify the request template file')
opt.add_option('-t', dest='print_template', action="store_true", default=False,
help='print the default request template')
opt.add_option('-m', dest='modules', type='string', default=[], action='append',
help='load additionals Python modules used in Python interpreted template variables')
opt.add_option('-O', dest='out_regex', type='string', default="",
help='regex to apply to response received, (default \'(.*\n)*\')')
opt.add_option('-R', dest='out_replace', type='string', default="",
help='print this replace string applied to the response')
options, args = opt.parse_args(sys.argv[1:])
if options.print_template:
sys.stderr.write("%s\n" % def_request)
sys.exit()
for m in options.modules:
globals()[m] = __import__(m)
if not options.dest_ip:
sys.stderr.write("ERROR: destination ip not defined\n")
opt.print_help()
sys.exit(-1)
template_vars = {
"source_ip": options.source_ip,
"source_port": options.source_port,
"dest_ip": options.dest_ip,
"dest_port": options.dest_port
}
# first var is empty by default
for v in options.var[1:]:
try:
key = v.split(":")[0]
val = ":".join(v.split(":")[1:])
template_vars.update({key: val})
except IndexError:
sys.stderr.write("ERROR: variables must be in format name:value. %s\n" % v)
opt.print_help()
sys.exit()
if options.verbose:
sys.stderr.write("=======================================\n")
sys.stderr.write("I'm using these variables in templates: \n")
sys.stderr.write("=======================================\n")
for k in template_vars:
sys.stderr.write("%s: %s\n" % (k, template_vars[k]))
sys.stderr.write("=======================================\n\n")
try:
sock = open_sock(options)
except Exception, e:
sys.stderr.write("ERROR: cannot open socket. %s\n" % e)
sys.exit(-1)
sent = rcvd = 0
try:
for req in gen_request(template_vars, options):
try:
sip_req = Request(req)
# Add Content-Lenght if missing
if "content-length" not in sip_req.headers:
sip_req.headers["content-length"] = len(sip_req.body)
try:
sock.sendto(str(sip_req), (options.dest_ip, options.dest_port))
except Exception, e:
sys.stderr.write("ERROR: cannot send packet to %s:%d. %s\n" % (options.dest_ip, options.dest_port, e))
if not options.quiet:
sys.stderr.write("sent Request %s to %s:%d cseq=%s len=%d\n" % (sip_req.method, options.dest_ip, options.dest_port, sip_req.headers['cseq'].split()[0], len(str(sip_req))))
if options.verbose:
sys.stderr.write("\n=== Full Request sent ===\n\n")
sys.stderr.write("%s\n" % sip_req)
sent += 1
if not options.aggressive:
read = [sock]
inputready, outputready, exceptready = select.select(read, [], [], options.timeout)
for s in inputready:
if s == sock:
buf = None
buf = sock.recvfrom(0xffff)
print_reply(buf, template_vars, options.out_regex, options.out_replace, verbose=options.verbose, quiet=options.quiet)
rcvd += 1
except socket.timeout:
pass
time.sleep(options.wait)
except KeyboardInterrupt:
pass
if not options.quiet:
sys.stderr.write('\n--- statistics ---\n')
sys.stderr.write('%d packets transmitted, %d packets received, %.1f%% packet loss\n' % (sent, rcvd, (float(sent - rcvd) / sent) * 100))
if __name__ == '__main__':
main()