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
|
# -*- coding: utf-8 -*-
# Copyright (C) 2013 Intel Corporation
#
# Released under the MIT license (see COPYING.MIT)
# Provides a class for setting up ssh connections,
# running commands and copying files to/from a target.
# It's used by testimage.bbclass and tests in lib/oeqa/runtime.
import subprocess
import time
import os
import select
class SSHProcess(object):
def __init__(self, **options):
self.defaultopts = {
"stdout": subprocess.PIPE,
"stderr": subprocess.STDOUT,
"stdin": None,
"shell": False,
"bufsize": -1,
"preexec_fn": os.setsid,
}
self.options = dict(self.defaultopts)
self.options.update(options)
self.status = None
self.output = None
self.process = None
self.starttime = None
self.logfile = None
# Unset DISPLAY which means we won't trigger SSH_ASKPASS
env = os.environ.copy()
if "DISPLAY" in env:
del env['DISPLAY']
self.options['env'] = env
def log(self, msg):
if self.logfile:
with open(self.logfile, "a") as f:
f.write("%s" % msg)
def _run(self, command, timeout=None, logfile=None):
self.logfile = logfile
self.starttime = time.time()
output = ''
self.process = subprocess.Popen(command, **self.options)
if timeout:
endtime = self.starttime + timeout
eof = False
while time.time() < endtime and not eof:
if select.select([self.process.stdout], [], [], 5)[0] != []:
data = os.read(self.process.stdout.fileno(), 1024)
if not data:
self.process.stdout.close()
eof = True
else:
data = data.decode("utf-8")
output += data
self.log(data)
endtime = time.time() + timeout
# process hasn't returned yet
if not eof:
self.process.terminate()
time.sleep(5)
try:
self.process.kill()
except OSError:
pass
lastline = "\nProcess killed - no output for %d seconds. Total running time: %d seconds." % (timeout, time.time() - self.starttime)
self.log(lastline)
output += lastline
else:
output = self.process.communicate()[0]
self.log(output.rstrip())
self.status = self.process.wait()
self.output = output.rstrip()
def run(self, command, timeout=None, logfile=None):
try:
self._run(command, timeout, logfile)
except:
# Need to guard against a SystemExit or other exception occuring whilst running
# and ensure we don't leave a process behind.
if self.process.poll() is None:
self.process.kill()
self.status = self.process.wait()
raise
return (self.status, self.output)
class SSHControl(object):
def __init__(self, ip, logfile=None, timeout=300, user='root', port=None):
self.ip = ip
self.defaulttimeout = timeout
self.ignore_status = True
self.logfile = logfile
self.user = user
self.ssh_options = [
'-o', 'UserKnownHostsFile=/dev/null',
'-o', 'StrictHostKeyChecking=no',
'-o', 'LogLevel=ERROR'
]
self.ssh = ['ssh', '-l', self.user ] + self.ssh_options
self.scp = ['scp'] + self.ssh_options
if port:
self.ssh = self.ssh + [ '-p', port ]
self.scp = self.scp + [ '-P', port ]
def log(self, msg):
if self.logfile:
with open(self.logfile, "a") as f:
f.write("%s\n" % msg)
def _internal_run(self, command, timeout=None, ignore_status = True):
self.log("[Running]$ %s" % " ".join(command))
proc = SSHProcess()
status, output = proc.run(command, timeout, logfile=self.logfile)
self.log("[Command returned '%d' after %.2f seconds]" % (status, time.time() - proc.starttime))
if status and not ignore_status:
raise AssertionError("Command '%s' returned non-zero exit status %d:\n%s" % (command, status, output))
return (status, output)
def run(self, command, timeout=None):
"""
command - ssh command to run
timeout=<val> - kill command if there is no output after <val> seconds
timeout=None - kill command if there is no output after a default value seconds
timeout=0 - no timeout, let command run until it returns
"""
command = self.ssh + [self.ip, 'export PATH=/usr/sbin:/sbin:/usr/bin:/bin; ' + command]
if timeout is None:
return self._internal_run(command, self.defaulttimeout, self.ignore_status)
if timeout == 0:
return self._internal_run(command, None, self.ignore_status)
return self._internal_run(command, timeout, self.ignore_status)
def copy_to(self, localpath, remotepath):
if os.path.islink(localpath):
link = os.readlink(localpath)
dst_dir, dst_base = os.path.split(remotepath)
return self.run("cd %s; ln -s %s %s" % (dst_dir, link, dst_base))
else:
command = self.scp + [localpath, '%s@%s:%s' % (self.user, self.ip, remotepath)]
return self._internal_run(command, ignore_status=False)
def copy_from(self, remotepath, localpath):
command = self.scp + ['%s@%s:%s' % (self.user, self.ip, remotepath), localpath]
return self._internal_run(command, ignore_status=False)
def copy_dir_to(self, localpath, remotepath):
"""
Copy recursively localpath directory to remotepath in target.
"""
for root, dirs, files in os.walk(localpath):
# Create directories in the target as needed
for d in dirs:
tmp_dir = os.path.join(root, d).replace(localpath, "")
new_dir = os.path.join(remotepath, tmp_dir.lstrip("/"))
cmd = "mkdir -p %s" % new_dir
self.run(cmd)
# Copy files into the target
for f in files:
tmp_file = os.path.join(root, f).replace(localpath, "")
dst_file = os.path.join(remotepath, tmp_file.lstrip("/"))
src_file = os.path.join(root, f)
self.copy_to(src_file, dst_file)
def delete_files(self, remotepath, files):
"""
Delete files in target's remote path.
"""
cmd = "rm"
if not isinstance(files, list):
files = [files]
for f in files:
cmd = "%s %s" % (cmd, os.path.join(remotepath, f))
self.run(cmd)
def delete_dir(self, remotepath):
"""
Delete remotepath directory in target.
"""
cmd = "rmdir %s" % remotepath
self.run(cmd)
def delete_dir_structure(self, localpath, remotepath):
"""
Delete recursively localpath structure directory in target's remotepath.
This function is very usefult to delete a package that is installed in
the DUT and the host running the test has such package extracted in tmp
directory.
Example:
pwd: /home/user/tmp
tree: .
└── work
├── dir1
│ └── file1
└── dir2
localpath = "/home/user/tmp" and remotepath = "/home/user"
With the above variables this function will try to delete the
directory in the DUT in this order:
/home/user/work/dir1/file1
/home/user/work/dir1 (if dir is empty)
/home/user/work/dir2 (if dir is empty)
/home/user/work (if dir is empty)
"""
for root, dirs, files in os.walk(localpath, topdown=False):
# Delete files first
tmpdir = os.path.join(root).replace(localpath, "")
remotedir = os.path.join(remotepath, tmpdir.lstrip("/"))
self.delete_files(remotedir, files)
# Remove dirs if empty
for d in dirs:
tmpdir = os.path.join(root, d).replace(localpath, "")
remotedir = os.path.join(remotepath, tmpdir.lstrip("/"))
self.delete_dir(remotepath)
|
