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#
# This code is part of Ansible, but is an independent component.
# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# (c) 2017 Red Hat Inc.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import os
import socket
import struct
import traceback
import uuid
from functools import partial
from ansible.module_utils._text import to_bytes, to_native, to_text
def send_data(s, data):
packed_len = struct.pack('!Q', len(data))
return s.sendall(packed_len + data)
def recv_data(s):
header_len = 8 # size of a packed unsigned long long
data = to_bytes("")
while len(data) < header_len:
d = s.recv(header_len - len(data))
if not d:
return None
data += d
data_len = struct.unpack('!Q', data[:header_len])[0]
data = data[header_len:]
while len(data) < data_len:
d = s.recv(data_len - len(data))
if not d:
return None
data += d
return data
def exec_command(module, command):
try:
sf = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
sf.connect(module._socket_path)
data = "EXEC: %s" % command
send_data(sf, to_bytes(data.strip()))
rc = int(recv_data(sf), 10)
stdout = recv_data(sf)
stderr = recv_data(sf)
except socket.error as e:
sf.close()
module.fail_json(msg='unable to connect to socket', err=to_native(e), exception=traceback.format_exc())
sf.close()
return rc, to_native(stdout, errors='surrogate_or_strict'), to_native(stderr, errors='surrogate_or_strict')
def request_builder(method, *args, **kwargs):
reqid = str(uuid.uuid4())
req = {'jsonrpc': '2.0', 'method': method, 'id': reqid}
params = list(args) or kwargs or None
if params:
req['params'] = params
return req
class Connection:
def __init__(self, module):
self._module = module
def __getattr__(self, name):
try:
return self.__dict__[name]
except KeyError:
if name.startswith('_'):
raise AttributeError("'%s' object has no attribute '%s'" % (self.__class__.__name__, name))
return partial(self.__rpc__, name)
def __rpc__(self, name, *args, **kwargs):
"""Executes the json-rpc and returns the output received
from remote device.
:name: rpc method to be executed over connection plugin that implements jsonrpc 2.0
:args: Ordered list of params passed as arguments to rpc method
:kwargs: Dict of valid key, value pairs passed as arguments to rpc method
For usage refer the respective connection plugin docs.
"""
req = request_builder(name, *args, **kwargs)
reqid = req['id']
if not self._module._socket_path:
self._module.fail_json(msg='provider support not available for this host')
if not os.path.exists(self._module._socket_path):
self._module.fail_json(msg='provider socket does not exist, is the provider running?')
try:
data = self._module.jsonify(req)
rc, out, err = exec_command(self._module, data)
except socket.error as e:
self._module.fail_json(msg='unable to connect to socket', err=to_native(e),
exception=traceback.format_exc())
try:
response = self._module.from_json(to_text(out, errors='surrogate_then_replace'))
except ValueError as exc:
self._module.fail_json(msg=to_text(exc, errors='surrogate_then_replace'))
if response['id'] != reqid:
self._module.fail_json(msg='invalid id received')
if 'error' in response:
msg = response['error'].get('data') or response['error']['message']
self._module.fail_json(msg=to_text(msg, errors='surrogate_then_replace'))
return response['result']
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