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
| | #! /usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
"""
Test A Simple Socket Transport
transfer.py - Helpers for testing data transfers
"""
import contextlib
from ipaddress import IPv4Address, IPv6Address
import time
import exeter
from . import nstool, snh
# HACK: how long to wait for the server to be ready and listening (s)
SERVER_READY_DELAY = 0.1 # 1/10th of a second
# socat needs IPv6 addresses in square brackets
def socat_ip(ip):
if isinstance(ip, IPv6Address):
return f'[{ip}]'
if isinstance(ip, IPv4Address):
return f'{ip}'
raise TypeError
def socat_upload(datafile, csnh, ssnh, connect, listen):
srcdata = csnh.output('cat', f'{datafile}')
with ssnh.bg('socat', '-u', f'{listen}', 'STDOUT',
capture=snh.STDOUT) as server:
time.sleep(SERVER_READY_DELAY)
# Can't use csnh.fg() here, because while we wait for the
# client to complete we won't be reading from the output pipe
# of the server, meaning it will freeze once the buffers fill
with csnh.bg('socat', '-u', f'OPEN:{datafile}', f'{connect}') \
as client:
res = server.run()
client.run()
exeter.assert_eq(srcdata, res.stdout)
def socat_download(datafile, csnh, ssnh, connect, listen):
srcdata = ssnh.output('cat', f'{datafile}')
with ssnh.bg('socat', '-u', f'OPEN:{datafile}', f'{listen}'):
time.sleep(SERVER_READY_DELAY)
dstdata = csnh.output('socat', '-u', f'{connect}', 'STDOUT')
exeter.assert_eq(srcdata, dstdata)
def _tcp_socat(connectip, connectport, listenip, listenport, fromip):
v6 = isinstance(connectip, IPv6Address)
if listenport is None:
listenport = connectport
if v6:
connect = f'TCP6:[{connectip}]:{connectport},ipv6only'
listen = f'TCP6-LISTEN:{listenport},ipv6only'
else:
connect = f'TCP4:{connectip}:{connectport}'
listen = f'TCP4-LISTEN:{listenport}'
if listenip is not None:
listen += f',bind={socat_ip(listenip)}'
if fromip is not None:
connect += f',bind={socat_ip(fromip)}'
return (connect, listen)
def tcp_upload(datafile, cs, ss, connectip, connectport,
listenip=None, listenport=None, fromip=None):
connect, listen = _tcp_socat(connectip, connectport, listenip, listenport,
fromip)
socat_upload(datafile, cs, ss, connect, listen)
def tcp_download(datafile, cs, ss, connectip, connectport,
listenip=None, listenport=None, fromip=None):
connect, listen = _tcp_socat(connectip, connectport, listenip, listenport,
fromip)
socat_download(datafile, cs, ss, connect, listen)
def udp_transfer(datafile, cs, ss, connectip, connectport,
listenip=None, listenport=None, fromip=None):
v6 = isinstance(connectip, IPv6Address)
if listenport is None:
listenport = connectport
if v6:
connect = f'UDP6:[{connectip}]:{connectport},ipv6only,shut-null'
listen = f'UDP6-LISTEN:{listenport},ipv6only,null-eof'
else:
connect = f'UDP4:{connectip}:{connectport},shut-null'
listen = f'UDP4-LISTEN:{listenport},null-eof'
if listenip is not None:
listen += f',bind={socat_ip(listenip)}'
if fromip is not None:
connect += f',bind={socat_ip(fromip)}'
socat_upload(datafile, cs, ss, connect, listen)
SMALL_DATA = 'test/small.bin'
BIG_DATA = 'test/big.bin'
UDP_DATA = 'test/medium.bin'
class TransferTestScenario:
def __init__(self, *, client, server, connect_ip, connect_port,
listen_ip=None, listen_port=None, from_ip=None):
self.client = client
self.server = server
if isinstance(connect_ip, IPv4Address):
self.ip = connect_ip
self.listen_ip = listen_ip
self.from_ip = from_ip
elif isinstance(connect_ip, IPv6Address):
self.ip = connect_ip
self.listen_ip = listen_ip
self.from_ip = from_ip
self.port = connect_port
self.listen_port = listen_port
def test_tcp_upload(setup, datafile=SMALL_DATA):
with setup as scn:
tcp_upload(datafile, scn.client, scn.server, scn.ip, scn.port,
listenip=scn.listen_ip, listenport=scn.listen_port,
fromip=scn.from_ip)
def test_tcp_big_upload(setup):
return test_tcp_upload(setup, datafile=BIG_DATA)
def test_tcp_download(setup, datafile=SMALL_DATA):
with setup as scn:
tcp_download(datafile, scn.client, scn.server, scn.ip, scn.port,
listenip=scn.listen_ip, listenport=scn.listen_port,
fromip=scn.from_ip)
def test_tcp_big_download(setup):
return test_tcp_download(setup, datafile=BIG_DATA)
def test_udp_transfer(setup, datafile=UDP_DATA):
with setup as scn:
udp_transfer(datafile, scn.client, scn.server,
scn.ip, scn.port,
listenip=scn.listen_ip, listenport=scn.listen_port,
fromip=scn.from_ip)
TRANSFER_TESTS = [test_tcp_upload, test_tcp_big_upload,
test_tcp_download, test_tcp_big_download,
test_udp_transfer]
def transfer_tests(setup):
for t in TRANSFER_TESTS:
testid = f'{setup.__qualname__}|{t.__qualname__}'
exeter.register_pipe(testid, setup, t)
@contextlib.contextmanager
def local_transfer4():
with nstool.unshare_snh('ns', '-Un') as ns:
ns.ifup('lo')
yield TransferTestScenario(client=ns, server=ns,
connect_ip=IPv4Address('127.0.0.1'),
connect_port=10000)
transfer_tests(local_transfer4)
@contextlib.contextmanager
def local_transfer6():
with nstool.unshare_snh('ns', '-Un') as ns:
ns.ifup('lo')
yield TransferTestScenario(client=ns, server=ns,
connect_ip=IPv6Address('::1'),
connect_port=10000)
transfer_tests(local_transfer6)
|