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
|
"""This is a utility class to make shell scripting easier in Python.
It combines Pexpect and wraps many Standard Python Library functions
to make them look more shell-like.
$Id$
"""
import pexpect, os, sys, re
from types import *
class ExceptionPsh(pexpect.ExceptionPexpect):
"""Raised for Psh exceptions.
"""
class ExceptionErrorCode(ExceptionPsh):
"""Raised when an program returns an error code.
"""
def __init__(self, string, err_code, cmd_output):
ExceptionPsh.__init__(self,string)
self.error = err_code
self.output = cmd_output
class psh (object):
def __init__ (self,exp):
self.exp = exp
self.default_timeout = 30 # Seconds
def ls (self, path=''):
fileStr = self.run("ls %s" % path)
return fileStr.split()
def cd (self, path='-'):
return self.run("cd %s" % path)
def rm (self, path=''):
return self.run("/bin/rm -f %s" % path)
def cp (self, path_from='', path_to=''):
return self.run("/bin/cp %s %s" % (path_from, path_to))
def mv (self, path_from='', path_to=''):
return self.run("/bin/mv %s %s" % (path_from, path_to))
def pwd (self):
return self.run("/bin/pwd")
def which (self, exe_name):
return self.run("/usr/bin/which %s" % exe_name)
def chown (self, path, user='', group=None, recurse=False):
xtra_flags = ""
if recurse: xtra_flags = "-R"
if group: group = ':' + group
else: group = ""
return self.run("/bin/chmod %s %s%s %s" % (recurse,user,group,path))
def chmod (self, path, perms='', recurse=False):
xtra_flags = ""
if recurse: xtra_flags = "-R"
return self.run("/usr/bin/chmod %s %s %s" % (xtra_flags, perms, path))
def chattr (self, path, attrs='', recurse=False):
xtra_flags = ""
if recurse: xtra_flags = "-R"
return self.run("/usr/bin/chattr %s %s %s" % (xtra_flags, attrs, path))
def cat (self, path):
return self.run("/bin/cat %s" % path)
def run (self, cmd, stim_resp_dict = {}, timeout=None):
(ret, output) = self.run_raw(cmd, stim_resp_dict, timeout)
if ret == 0: return output
raise ExceptionErrorCode("Running command [%s] returned error [%d]" % (cmd,ret), ret, output)
def run_raw(self, cmd, stim_resp_dict=None, timeout=None):
"""Someone contributed this, but now I've lost touch and I forget the motive of this.
It was sort of a sketch at the time which doesn't make this any easier to prioritize, but
it seemed important at the time.
"""
if not timeout: timeout = self.default_timeout
def cmd_exp_loop(param):
if type(param) is DictType:
param = (param,)
for item in param:
if type(item) is type(()) or type(item) is type([]):
cmd_exp_loop(item)
elif type(item) is type(""):
self.exp.send(item)
elif type(item) is type({}):
dict = item
while(1):
stimulus = dict.keys()
idx = self.exp.expect_exact(stimulus, timeout)
keys = dict.keys()
respond = dict[keys[idx]]
if type(respond) is type({}) or type(respond) is type(()) or type(item) is type([]):
cmd_exp_loop(respond)
if type(respond) is type(""):
self.exp.send(respond)
elif type(respond) is InstanceType and Exception in inspect.getmro(respond.__class__):
raise respond
elif type(respond) is type(0):
return (respond, self.exp.before)
elif respond is None:
break
else:
self.exp.send(str(respond))
if stim_resp_dict == None:
stim_resp_dict = {}
self.exp.sendline("")
if not self.exp.prompt(): raise SessionException("No prompt")
self.exp.sendline(cmd)
self.exp.expect_exact([cmd])
stim_resp_dict[re.compile(self.exp.PROMPT)] = None
cmd_exp_loop(stim_resp_dict)
output = self.exp.before
# Get the return code
self.exp.sendline("echo $?")
self.exp.expect_exact(["echo $?"])
if not self.exp.prompt(): raise SessionException("No prompt", 0, self.exp.before)
try:
reg = re.compile("^(\d+)")
s = self.exp.before.strip()
#print s
#pdb.set_trace()
s = reg.search(s).groups()[0]
error_code = int(s)
except ValueError:
log.error("Cannot parse %s into an int!" % self.exp.before)
raise
if not output[0:2] == '\r\n':
log.warning("Returned output lacks leading \\r\\n which may indicate a tae error")
log.debug2("Offending output string: [%s]" % output)
return (error_code, output)
else:
return(error_code, output[2:])
# def pipe (self, cmd, string_to_send):
|
