def proc_run(self, command, stdin_str="", timeout=10, outputfun=None):
# Timeout is only used with outputfun
self.debug("run '" + str(" ".join(command)) + "', input len=" +
str(len(stdin_str)))
try:
if outputfun:
return self.proc_run_outputfun(command, timeout, outputfun)
else:
proc = subprocess.Popen(command,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True)
(stdoutdata, stderrdata) = proc.communicate(input=stdin_str)
self.debug("run finished, output len=" + str(len(stdoutdata)) +
", err len=" + str(len(stderrdata)))
return (stdoutdata, stderrdata)
except OSError as oserr:
if oserr.errno == 2: # File not found
raise ActionError({
'error':
"Dependent application not found, please install: " +
str(command[0])
})
raise ActionError(
{'error': "OSError when executing " + str(command[0])})
except:
self.debug("run failed:\n" +
repr(traceback.format_exception(*sys.exc_info())))
raise ActionError(
{'error': "Failed to execute " + str(command[0])})
def get_conn_details(self):
def safe_ncs_decrypt(value):
if value is None:
return None
try:
return _ncs.decrypt(len=255, ciphertext=value)
except:
return _ncs.decrypt(ciphertext=value)
with single_trans(_ncs.READ_WRITE) as t:
device_path = '/ncs:devices/device{"' + self.dev_name + '"}'
address = str(t.get_elem(device_path + '/address'))
device_type_netconf = t.exists(device_path +
'/device-type/netconf')
try:
port = int(t.get_elem(device_path + '/port'))
except:
port = 830
self.debug("Device addr={0}, port={1}, netconf={2}".format(
address, port, device_type_netconf))
if device_type_netconf != True:
raise ActionError(
{'error': "pioneer only works with NETCONF devices"})
authgroup_name = str(t.get_elem(device_path + '/authgroup'))
## FIXME default-map only, add umap support -- or at least an error message
authgroup_path = '/ncs:devices/authgroups/group{"' + authgroup_name + '"}/default-map'
missing = []
try:
remote_name = str(t.get_elem(authgroup_path + '/remote-name'))
except:
missing.append('remote-name')
try:
remote_password = str(
t.get_elem(authgroup_path +
'/remote-password')) # FIXME password only
except:
missing.append('remote-password')
if len(missing) > 0:
raise ActionError({
'error':
'required configuration in authentication group {0} default-map missing: {1}'
.format(authgroup_name, ', '.join(missing))
})
self.debug("Credentials user={0}, pass={1}".format(
remote_name, remote_password))
remote_password = safe_ncs_decrypt(remote_password)
return (address, port, remote_name, remote_password)
def _yang_sftp_read_settings(self):
def safe_get(sock, th, path, default=None):
try:
return maapi.get_elem(sock, th, path)
except _ncs.error.Error as e:
if e.confd_errno == _ncs.ERR_NOEXISTS:
if isinstance(default, Exception):
raise default
return default
else:
raise e
sock = socket.socket()
maapi.connect(sock, '127.0.0.1', _ncs.PORT)
try:
maapi.start_user_session2(sock, 'admin', 'system', [], '127.0.0.1',
0, _ncs.PROTO_TCP)
try:
th = maapi.start_trans(sock, _ncs.RUNNING, _ncs.READ)
sftp_prefix = '/{0}:{1}/{2}/'.format(ns.ns.prefix,
ns.ns.pioneer_pioneer_,
ns.ns.pioneer_sftp_)
host_path = sftp_prefix + ns.ns.pioneer_host_
host = safe_get(
sock, th, host_path,
ActionError({'error': host_path + ' is required'}))
port = safe_get(sock, th, sftp_prefix + ns.ns.pioneer_port_,
22)
username_path = sftp_prefix + ns.ns.pioneer_username_
username = safe_get(
sock, th, username_path,
ActionError({'error': username_path + ' is required'}))
password = safe_get(sock, th,
sftp_prefix + ns.ns.pioneer_password_,
None)
rsa_key_path = safe_get(
sock, th, sftp_prefix + ns.ns.pioneer_rsa_key_path_,
'~/id_rsa')
return (str(host), int(port), str(username),
password and str(password)
or None, os.path.expanduser(str(rsa_key_path)))
finally:
maapi.end_user_session(sock)
finally:
sock.close()
def cb_action(self, uinfo, op_name, kp, params):
self.debug("========== pioneer cb_action() ==========")
dev_name = str(kp[-3][0])
self.debug("thandle={0} usid={1}".format(uinfo.actx_thandle,
uinfo.usid))
try:
if op_name.tag not in self.handlers:
raise ActionError({
'error':
"Operation not implemented: {0}".format(op_name)
})
handler_cls = self.handlers[op_name.tag]
handler = handler_cls(self.msocket, uinfo, dev_name, params,
self.debug)
result = handler.perform()
return self.action_response(uinfo, result)
##----------------------------------------------------------------
except ActionError as ae:
self.debug("ActionError exception")
return self.action_response(uinfo, ae.get_info())
except:
self.debug("Other exception: " +
repr(traceback.format_exception(*sys.exc_info())))
msg = "Operation failed"
dp.action_reply_values(
uinfo, [TV(XT(ns.ns.hash, ns.ns.pioneer_error), V(msg))])
return _ncs.CONFD_OK
def fetch_model_list_netconf_monitoring(self, method):
if method == 'subtree':
self.debug(
"Fetching YANG model list with netconf-console --get --subtree from netconf-monitoring"
)
xml_get_result = self.nc_perform(
subtree=
"<netconf-state xmlns='urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring'/>"
)
else:
self.debug(
"Fetching YANG model list with netconf-console --get --xpath from netconf-monitoring"
)
xml_get_result = self.nc_perform(xpath="/netconf-state")
self.debug("Parsing model names")
(model_list_txt, stderr) = self.proc_run([
self.get_exe_path("xsltproc"), "--nonet", "--novalid",
self.pkg_root_dir + "/load-dir/ncs-extract-schemas.xsl", "-"
], xml_get_result)
self.debug("Parsed:\n" + model_list_txt + "\n" + stderr)
if stderr != "":
raise ActionError(
{'error': "Failed to parse model list:\n" + stderr})
model_list = []
lines = [line for line in model_list_txt.split("\n") if line != ""]
for line in lines:
tokens = line.split(":")
self.debug("tokens=" + str(tokens))
if tokens[0] == 'netconf':
model_list += [tokens[1]]
else:
model_list += [tokens[0]]
return model_list
def nc_perform(self,
op='get',
subtree='',
xpath='',
method_opts=None,
timeout=20):
if subtree != '':
method_opts = ["--subtree", subtree]
elif xpath != '':
method_opts = ["--xpath", xpath]
elif method_opts is None:
method_opts = []
(address, port, remote_name, remote_password) = self.get_conn_details()
args = ["--" + op] + method_opts + [
"--host=" + str(address), "--port=" + str(port),
"--user="******"--password="******"Calling netconf_console %s" % args)
netconf_console.main(args, iocb, self)
self.debug("Returned from netconf_console")
xml_get_result = iocb.out.getvalue().decode()
stderr = iocb.err.getvalue().decode()
self.debug("Fetched:\n" + xml_get_result + "\n\n" + stderr)
if stderr != "":
raise ActionError(
{'error': "Failed to execute " + op + ":\n" + stderr})
return xml_get_result
def transition_to_state(self, to_state_filename):
filename = os.path.join(self.states_dir, to_state_filename)
if not os.path.exists(filename):
state_name = self.state_filename_to_name(to_state_filename,
self.dev_name)
raise ActionError(
{'error': 'No such state: {0}'.format(state_name)})
try:
self.debug("Transition_to_state: #{0}\n".format(filename))
self.extend_timeout(
120
) # Max 120 seconds for executing the transaction and a compare-config
thandle = maapi.start_trans2(self.msocket, _ncs.RUNNING,
_ncs.READ_WRITE, self.uinfo.usid)
maapi.delete(self.msocket, thandle,
"/ncs:devices/device{" + self.dev_name + "}/config")
maapi.load_config(self.msocket, thandle,
maapi.CONFIG_J + maapi.CONFIG_MERGE, filename)
maapi.apply_trans(self.msocket, thandle, False)
self.debug("Committed\n")
result = maapi.request_action(
self.msocket, [], 0,
"/ncs:devices/device{" + self.dev_name + "}/compare-config")
if [] == result:
self.debug("In sync\n")
return True
else:
return "out-of-sync"
except:
self.debug("Exception: " +
repr(traceback.format_exception(*sys.exc_info())))
return "transaction-failed"
finally:
maapi.finish_trans(self.msocket, thandle)
def create_yang_dir(self):
try:
os.makedirs(self.yang_directory)
except:
pass
if not os.path.exists(self.yang_directory):
raise ActionError({
'error':
'Failed to create directory {0}'.format(self.yang_directory)
})
def get_exe_path(self, exe):
path = self.get_exe_path_from_PATH(exe)
if not os.path.exists(path):
raise ActionError({
'error':
'Unable to execute {0}, command no found in PATH {1}'.format(
exe, os.environ['PATH'])
})
return path
def extract_capas_from_hello(self, hello_str):
self.debug("Parsing capas")
(capas_list_txt, stderr) = self.proc_run([
self.get_exe_path("xsltproc"), "--nonet", "--novalid",
self.pkg_root_dir + "/load-dir/ncs-extract-capas.xsl", "-"
], hello_str)
self.debug("Parsed:\n" + capas_list_txt + "\n" + stderr)
if stderr != "":
raise ActionError(
{'error': "Failed to parse capas list:\n" + stderr})
capas_list = capas_list_txt.split("\n")
return capas_list
def perform(self):
self.debug("yang_sftp() with device {0}".format(self.dev_name))
self.create_yang_dir()
try:
import paramiko
except ImportError:
raise ActionError(
{'error': "SFTP support requires paramiko to be available"})
host, port, username, password, rsa_key_path = self._yang_sftp_read_settings(
)
model_list = self.parse_name_list(self.name)
match = lambda n: (len(model_list) == 0) or (n in model_list)
self.debug('connecting to {0}:{1} as {2}...'.format(
host, port, username))
message = 'connection failed'
try:
with paramiko.Transport((host, port)) as transport:
if password is None:
pkey = paramiko.RSAKey.from_private_key_file(rsa_key_path)
transport.connect(username=username, pkey=pkey)
else:
transport.connect(username=username, password=password)
with paramiko.SFTPClient.from_transport(transport) as sftp:
names = [
name for name in sftp.listdir(self.remote_path)
if name.endswith('.yang') and match(name)
]
self.progress_msg(
"Downloading {0} files using SFTP...\n".format(
len(names)))
for name in names:
remote_path = '{0}/{1}'.format(self.remote_path, name)
local_path = os.path.join(self.yang_directory, name)
sftp.get(remote_path, local_path)
message = 'transferred {0} files'.format(len(names))
except Exception as e:
message = 'error occured {0}'.format(e)
self.debug(message)
self.debug(traceback.format_exc())
return {'yang-directory': self.yang_directory, 'message': message}
def abort(self, msg):
raise ActionError({'error': msg})
