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#!/usr/bin/env python
'''automated testing library for testing Samba against windows'''
import pexpect, subprocess
import sys, os, time, re
class wintest():
'''testing of Samba against windows VMs'''
def __init__(self):
self.vars = {}
self.list_mode = False
os.putenv('PYTHONUNBUFFERED', '1')
def setvar(self, varname, value):
'''set a substitution variable'''
self.vars[varname] = value
def setwinvars(self, vm, prefix='WIN'):
'''setup WIN_XX vars based on a vm name'''
for v in ['VM', 'HOSTNAME', 'USER', 'PASS', 'SNAPSHOT', 'BASEDN', 'REALM', 'DOMAIN']:
vname = '%s_%s' % (vm, v)
if vname in self.vars:
self.setvar("%s_%s" % (prefix,v), self.substitute("${%s}" % vname))
else:
self.vars.pop("%s_%s" % (prefix,v), None)
def info(self, msg):
'''print some information'''
if not self.list_mode:
print(self.substitute(msg))
def load_config(self, fname):
'''load the config file'''
f = open(fname)
for line in f:
line = line.strip()
if len(line) == 0 or line[0] == '#':
continue
colon = line.find(':')
if colon == -1:
raise RuntimeError("Invalid config line '%s'" % line)
varname = line[0:colon].strip()
value = line[colon+1:].strip()
self.setvar(varname, value)
def list_steps_mode(self):
'''put wintest in step listing mode'''
self.list_mode = True
def set_skip(self, skiplist):
'''set a list of tests to skip'''
self.skiplist = skiplist.split(',')
def skip(self, step):
'''return True if we should skip a step'''
if self.list_mode:
print("\t%s" % step)
return True
return step in self.skiplist
def substitute(self, text):
"""Substitute strings of the form ${NAME} in text, replacing
with substitutions from vars.
"""
if isinstance(text, list):
ret = text[:]
for i in range(len(ret)):
ret[i] = self.substitute(ret[i])
return ret
while True:
var_start = text.find("${")
if var_start == -1:
return text
var_end = text.find("}", var_start)
if var_end == -1:
return text
var_name = text[var_start+2:var_end]
if not var_name in self.vars:
raise RuntimeError("Unknown substitution variable ${%s}" % var_name)
text = text.replace("${%s}" % var_name, self.vars[var_name])
return text
def have_var(self, varname):
'''see if a variable has been set'''
return varname in self.vars
def putenv(self, key, value):
'''putenv with substitution'''
os.putenv(key, self.substitute(value))
def chdir(self, dir):
'''chdir with substitution'''
os.chdir(self.substitute(dir))
def run_cmd(self, cmd, dir=".", show=None, output=False, checkfail=True):
cmd = self.substitute(cmd)
if isinstance(cmd, list):
self.info('$ ' + " ".join(cmd))
else:
self.info('$ ' + cmd)
if output:
return subprocess.Popen([cmd], shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=dir).communicate()[0]
if isinstance(cmd, list):
shell=False
else:
shell=True
if checkfail:
return subprocess.check_call(cmd, shell=shell, cwd=dir)
else:
return subprocess.call(cmd, shell=shell, cwd=dir)
def cmd_output(self, cmd):
'''return output from and command'''
cmd = self.substitute(cmd)
return self.run_cmd(cmd, output=True)
def cmd_contains(self, cmd, contains, nomatch=False, ordered=False, regex=False):
'''check that command output contains the listed strings'''
out = self.cmd_output(cmd)
self.info(out)
for c in self.substitute(contains):
if regex:
m = re.search(c, out)
if m is None:
start = -1
end = -1
else:
start = m.start()
end = m.end()
else:
start = out.find(c)
end = start + len(c)
if nomatch:
if start != -1:
raise RuntimeError("Expected to not see %s in %s" % (c, cmd))
else:
if start == -1:
raise RuntimeError("Expected to see %s in %s" % (c, cmd))
if ordered and start != -1:
out = out[end:]
def retry_cmd(self, cmd, contains, retries=30, delay=2, wait_for_fail=False,
ordered=False, regex=False):
'''retry a command a number of times'''
while retries > 0:
try:
self.cmd_contains(cmd, contains, nomatch=wait_for_fail,
ordered=ordered, regex=regex)
return
except:
time.sleep(delay)
retries = retries - 1
raise RuntimeError("Failed to find %s" % contains)
def pexpect_spawn(self, cmd, timeout=60):
'''wrapper around pexpect spawn'''
cmd = self.substitute(cmd)
self.info("$ " + cmd)
ret = pexpect.spawn(cmd, logfile=sys.stdout, timeout=timeout)
def sendline_sub(line):
line = self.substitute(line).replace('\n', '\r\n')
return ret.old_sendline(line + '\r')
def expect_sub(line, timeout=ret.timeout):
line = self.substitute(line)
return ret.old_expect(line, timeout=timeout)
ret.old_sendline = ret.sendline
ret.sendline = sendline_sub
ret.old_expect = ret.expect
ret.expect = expect_sub
return ret
def vm_poweroff(self, vmname, checkfail=True):
'''power off a VM'''
self.setvar('VMNAME', vmname)
self.run_cmd("${VM_POWEROFF}", checkfail=checkfail)
def vm_restore(self, vmname, snapshot):
'''restore a VM'''
self.setvar('VMNAME', vmname)
self.setvar('SNAPSHOT', snapshot)
self.run_cmd("${VM_RESTORE}")
def ping_wait(self, hostname):
'''wait for a hostname to come up on the network'''
hostname = self.substitute(hostname)
loops=10
while loops > 0:
try:
self.run_cmd("ping -c 1 -w 10 %s" % hostname)
break
except:
loops = loops - 1
if loops == 0:
raise RuntimeError("Failed to ping %s" % hostname)
self.info("Host %s is up" % hostname)
def port_wait(self, hostname, port, retries=200, delay=3, wait_for_fail=False):
'''wait for a host to come up on the network'''
self.retry_cmd("nc -v -z -w 1 %s %u" % (hostname, port), ['succeeded'],
retries=retries, delay=delay, wait_for_fail=wait_for_fail)
def run_net_time(self, child):
'''run net time on windows'''
child.sendline("net time \\\\${HOSTNAME} /set")
child.expect("Do you want to set the local computer")
child.sendline("Y")
child.expect("The command completed successfully")
def run_date_time(self, child, time_tuple=None):
'''run date and time on windows'''
if time_tuple is None:
time_tuple = time.localtime()
child.sendline("date")
child.expect("Enter the new date:")
child.sendline(time.strftime("%m-%d-%y", time_tuple))
child.expect("C:")
child.sendline("time")
child.expect("Enter the new time:")
child.sendline(time.strftime("%H:%M:%S", time_tuple))
child.expect("C:")
def open_telnet(self, hostname, username, password, retries=60, delay=5, set_time=False):
'''open a telnet connection to a windows server, return the pexpect child'''
while retries > 0:
child = self.pexpect_spawn("telnet " + hostname + " -l '" + username + "'")
i = child.expect(["Welcome to Microsoft Telnet Service",
"No more connections are allowed to telnet server",
"Unable to connect to remote host",
"No route to host"])
if i != 0:
child.close()
time.sleep(delay)
retries -= 1
continue
child.expect("password:")
child.sendline(password)
child.expect("C:")
if set_time:
self.run_date_time(child, None)
return child
raise RuntimeError("Failed to connect with telnet")
def kinit(self, username, password):
'''use kinit to setup a credentials cache'''
self.run_cmd("kdestroy")
self.putenv('KRB5CCNAME', "${PREFIX}/ccache.test")
username = self.substitute(username)
s = username.split('@')
if len(s) > 0:
s[1] = s[1].upper()
username = '@'.join(s)
child = self.pexpect_spawn('kinit -V ' + username)
child.expect("Password for")
child.sendline(password)
child.expect("Authenticated to Kerberos")
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