457 lines
16 KiB
Python
457 lines
16 KiB
Python
#!/usr/bin/python
|
|
# -*- coding: utf-8 -*-
|
|
|
|
# (c) 2013, James Cammarata <jcammarata@ansibleworks.com>
|
|
#
|
|
# This file is part of Ansible
|
|
#
|
|
# Ansible is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Ansible is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
DOCUMENTATION = '''
|
|
---
|
|
module: accelerate
|
|
short_description: Enable accelerated mode on remote node
|
|
description:
|
|
- This modules launches an ephemeral I(accelerate) daemon on the remote node which
|
|
Ansible can use to communicate with nodes at high speed.
|
|
- The daemon listens on a configurable port for a configurable amount of time.
|
|
- Fireball mode is AES encrypted
|
|
version_added: "1.3"
|
|
options:
|
|
port:
|
|
description:
|
|
- TCP port for the socket connection
|
|
required: false
|
|
default: 5099
|
|
aliases: []
|
|
timeout:
|
|
description:
|
|
- The number of seconds the socket will wait for data. If none is received when the timeout value is reached, the connection will be closed.
|
|
required: false
|
|
default: 300
|
|
aliases: []
|
|
minutes:
|
|
description:
|
|
- The I(accelerate) listener daemon is started on nodes and will stay around for
|
|
this number of minutes before turning itself off.
|
|
required: false
|
|
default: 30
|
|
ipv6:
|
|
description:
|
|
- The listener daemon on the remote host will bind to the ipv6 localhost socket
|
|
if this parameter is set to true.
|
|
required: false
|
|
default: false
|
|
notes:
|
|
- See the advanced playbooks chapter for more about using accelerated mode.
|
|
requirements: [ "python-keyczar" ]
|
|
author: James Cammarata
|
|
'''
|
|
|
|
EXAMPLES = '''
|
|
# To use accelerate mode, simply add "accelerate: true" to your play. The initial
|
|
# key exchange and starting up of the daemon will occur over SSH, but all commands and
|
|
# subsequent actions will be conducted over the raw socket connection using AES encryption
|
|
|
|
- hosts: devservers
|
|
accelerate: true
|
|
tasks:
|
|
- command: /usr/bin/anything
|
|
'''
|
|
|
|
import base64
|
|
import getpass
|
|
import os
|
|
import os.path
|
|
import shutil
|
|
import signal
|
|
import socket
|
|
import struct
|
|
import sys
|
|
import syslog
|
|
import tempfile
|
|
import time
|
|
import traceback
|
|
|
|
import SocketServer
|
|
|
|
from datetime import datetime
|
|
from threading import Thread
|
|
|
|
syslog.openlog('ansible-%s' % os.path.basename(__file__))
|
|
PIDFILE = os.path.expanduser("~/.accelerate.pid")
|
|
|
|
# the chunk size to read and send, assuming mtu 1500 and
|
|
# leaving room for base64 (+33%) encoding and header (100 bytes)
|
|
# 4 * (975/3) + 100 = 1400
|
|
# which leaves room for the TCP/IP header
|
|
CHUNK_SIZE=10240
|
|
|
|
# FIXME: this all should be moved to module_common, as it's
|
|
# pretty much a copy from the callbacks/util code
|
|
DEBUG_LEVEL=0
|
|
def log(msg, cap=0):
|
|
global DEBUG_LEVEL
|
|
if DEBUG_LEVEL >= cap:
|
|
syslog.syslog(syslog.LOG_NOTICE|syslog.LOG_DAEMON, msg)
|
|
|
|
def vv(msg):
|
|
log(msg, cap=2)
|
|
|
|
def vvv(msg):
|
|
log(msg, cap=3)
|
|
|
|
def vvvv(msg):
|
|
log(msg, cap=4)
|
|
|
|
if os.path.exists(PIDFILE):
|
|
try:
|
|
data = int(open(PIDFILE).read())
|
|
try:
|
|
os.kill(data, signal.SIGKILL)
|
|
except OSError:
|
|
pass
|
|
except ValueError:
|
|
pass
|
|
os.unlink(PIDFILE)
|
|
|
|
HAS_KEYCZAR = False
|
|
try:
|
|
from keyczar.keys import AesKey
|
|
HAS_KEYCZAR = True
|
|
except ImportError:
|
|
pass
|
|
|
|
# NOTE: this shares a fair amount of code in common with async_wrapper, if async_wrapper were a new module we could move
|
|
# this into utils.module_common and probably should anyway
|
|
|
|
def daemonize_self(module, password, port, minutes):
|
|
# daemonizing code: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012
|
|
try:
|
|
pid = os.fork()
|
|
if pid > 0:
|
|
vvv("exiting pid %s" % pid)
|
|
# exit first parent
|
|
module.exit_json(msg="daemonized accelerate on port %s for %s minutes with pid %s" % (port, minutes, str(pid)))
|
|
except OSError, e:
|
|
log("fork #1 failed: %d (%s)" % (e.errno, e.strerror))
|
|
sys.exit(1)
|
|
|
|
# decouple from parent environment
|
|
os.chdir("/")
|
|
os.setsid()
|
|
os.umask(022)
|
|
|
|
# do second fork
|
|
try:
|
|
pid = os.fork()
|
|
if pid > 0:
|
|
log("daemon pid %s, writing %s" % (pid, PIDFILE))
|
|
pid_file = open(PIDFILE, "w")
|
|
pid_file.write("%s" % pid)
|
|
pid_file.close()
|
|
vvv("pidfile written")
|
|
sys.exit(0)
|
|
except OSError, e:
|
|
log("fork #2 failed: %d (%s)" % (e.errno, e.strerror))
|
|
sys.exit(1)
|
|
|
|
dev_null = file('/dev/null','rw')
|
|
os.dup2(dev_null.fileno(), sys.stdin.fileno())
|
|
os.dup2(dev_null.fileno(), sys.stdout.fileno())
|
|
os.dup2(dev_null.fileno(), sys.stderr.fileno())
|
|
log("daemonizing successful")
|
|
|
|
class ThreadWithReturnValue(Thread):
|
|
|
|
def __init__(self, group=None, target=None, name=None, args=(), kwargs={}, Verbose=None):
|
|
Thread.__init__(self, group, target, name, args, kwargs, Verbose)
|
|
self._return = None
|
|
|
|
def run(self):
|
|
if self._Thread__target is not None:
|
|
self._return = self._Thread__target(*self._Thread__args,
|
|
**self._Thread__kwargs)
|
|
|
|
def join(self,timeout=None):
|
|
Thread.join(self, timeout=timeout)
|
|
return self._return
|
|
|
|
class ThreadedTCPServer(SocketServer.ThreadingTCPServer):
|
|
def __init__(self, server_address, RequestHandlerClass, module, password, timeout):
|
|
self.module = module
|
|
self.key = AesKey.Read(password)
|
|
self.allow_reuse_address = True
|
|
self.timeout = timeout
|
|
SocketServer.ThreadingTCPServer.__init__(self, server_address, RequestHandlerClass)
|
|
|
|
class ThreadedTCPV6Server(SocketServer.ThreadingTCPServer):
|
|
def __init__(self, server_address, RequestHandlerClass, module, password, timeout):
|
|
self.module = module
|
|
self.address_family = socket.AF_INET6
|
|
self.key = AesKey.Read(password)
|
|
self.allow_reuse_address = True
|
|
self.timeout = timeout
|
|
SocketServer.ThreadingTCPServer.__init__(self, server_address, RequestHandlerClass)
|
|
|
|
class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
|
|
def send_data(self, data):
|
|
packed_len = struct.pack('!Q', len(data))
|
|
return self.request.sendall(packed_len + data)
|
|
|
|
def recv_data(self):
|
|
header_len = 8 # size of a packed unsigned long long
|
|
data = ""
|
|
vvvv("in recv_data(), waiting for the header")
|
|
while len(data) < header_len:
|
|
d = self.request.recv(header_len - len(data))
|
|
if not d:
|
|
vvv("received nothing, bailing out")
|
|
return None
|
|
data += d
|
|
vvvv("in recv_data(), got the header, unpacking")
|
|
data_len = struct.unpack('!Q',data[:header_len])[0]
|
|
data = data[header_len:]
|
|
vvvv("data received so far (expecting %d): %d" % (data_len,len(data)))
|
|
while len(data) < data_len:
|
|
d = self.request.recv(data_len - len(data))
|
|
if not d:
|
|
vvv("received nothing, bailing out")
|
|
return None
|
|
data += d
|
|
vvvv("data received so far (expecting %d): %d" % (data_len,len(data)))
|
|
vvvv("received all of the data, returning")
|
|
return data
|
|
|
|
def handle(self):
|
|
try:
|
|
while True:
|
|
vvvv("waiting for data")
|
|
data = self.recv_data()
|
|
if not data:
|
|
vvvv("received nothing back from recv_data(), breaking out")
|
|
break
|
|
try:
|
|
vvvv("got data, decrypting")
|
|
data = self.server.key.Decrypt(data)
|
|
vvvv("decryption done")
|
|
except:
|
|
vv("bad decrypt, skipping...")
|
|
data2 = json.dumps(dict(rc=1))
|
|
data2 = self.server.key.Encrypt(data2)
|
|
send_data(client, data2)
|
|
return
|
|
|
|
vvvv("loading json from the data")
|
|
data = json.loads(data)
|
|
|
|
mode = data['mode']
|
|
response = {}
|
|
last_pong = datetime.now()
|
|
if mode == 'command':
|
|
vvvv("received a command request, running it")
|
|
twrv = ThreadWithReturnValue(target=self.command, args=(data,))
|
|
twrv.start()
|
|
response = None
|
|
while twrv.is_alive():
|
|
if (datetime.now() - last_pong).seconds >= 15:
|
|
last_pong = datetime.now()
|
|
vvvv("command still running, sending keepalive packet")
|
|
data2 = json.dumps(dict(pong=True))
|
|
data2 = self.server.key.Encrypt(data2)
|
|
self.send_data(data2)
|
|
time.sleep(0.1)
|
|
response = twrv._return
|
|
vvvv("thread is done, response from join was %s" % response)
|
|
elif mode == 'put':
|
|
vvvv("received a put request, putting it")
|
|
response = self.put(data)
|
|
elif mode == 'fetch':
|
|
vvvv("received a fetch request, getting it")
|
|
response = self.fetch(data)
|
|
|
|
vvvv("response result is %s" % str(response))
|
|
data2 = json.dumps(response)
|
|
data2 = self.server.key.Encrypt(data2)
|
|
vvvv("sending the response back to the controller")
|
|
self.send_data(data2)
|
|
vvvv("done sending the response")
|
|
except:
|
|
tb = traceback.format_exc()
|
|
log("encountered an unhandled exception in the handle() function")
|
|
log("error was:\n%s" % tb)
|
|
data2 = json.dumps(dict(rc=1, failed=True, msg="unhandled error in the handle() function"))
|
|
data2 = self.server.key.Encrypt(data2)
|
|
self.send_data(data2)
|
|
|
|
def command(self, data):
|
|
if 'cmd' not in data:
|
|
return dict(failed=True, msg='internal error: cmd is required')
|
|
if 'tmp_path' not in data:
|
|
return dict(failed=True, msg='internal error: tmp_path is required')
|
|
if 'executable' not in data:
|
|
return dict(failed=True, msg='internal error: executable is required')
|
|
|
|
vvvv("executing: %s" % data['cmd'])
|
|
rc, stdout, stderr = self.server.module.run_command(data['cmd'], executable=data['executable'], close_fds=True)
|
|
if stdout is None:
|
|
stdout = ''
|
|
if stderr is None:
|
|
stderr = ''
|
|
vvvv("got stdout: %s" % stdout)
|
|
vvvv("got stderr: %s" % stderr)
|
|
|
|
return dict(rc=rc, stdout=stdout, stderr=stderr)
|
|
|
|
def fetch(self, data):
|
|
if 'in_path' not in data:
|
|
return dict(failed=True, msg='internal error: in_path is required')
|
|
|
|
try:
|
|
fd = file(data['in_path'], 'rb')
|
|
fstat = os.stat(data['in_path'])
|
|
vvv("FETCH file is %d bytes" % fstat.st_size)
|
|
while fd.tell() < fstat.st_size:
|
|
data = fd.read(CHUNK_SIZE)
|
|
last = False
|
|
if fd.tell() >= fstat.st_size:
|
|
last = True
|
|
data = dict(data=base64.b64encode(data), last=last)
|
|
data = json.dumps(data)
|
|
data = self.server.key.Encrypt(data)
|
|
|
|
if self.send_data(data):
|
|
return dict(failed=True, stderr="failed to send data")
|
|
|
|
response = self.recv_data()
|
|
if not response:
|
|
log("failed to get a response, aborting")
|
|
return dict(failed=True, stderr="Failed to get a response from %s" % self.host)
|
|
response = self.server.key.Decrypt(response)
|
|
response = json.loads(response)
|
|
|
|
if response.get('failed',False):
|
|
log("got a failed response from the master")
|
|
return dict(failed=True, stderr="Master reported failure, aborting transfer")
|
|
except Exception, e:
|
|
fd.close()
|
|
tb = traceback.format_exc()
|
|
log("failed to fetch the file: %s" % tb)
|
|
return dict(failed=True, stderr="Could not fetch the file: %s" % str(e))
|
|
|
|
fd.close()
|
|
return dict()
|
|
|
|
def put(self, data):
|
|
if 'data' not in data:
|
|
return dict(failed=True, msg='internal error: data is required')
|
|
if 'out_path' not in data:
|
|
return dict(failed=True, msg='internal error: out_path is required')
|
|
|
|
final_path = None
|
|
final_user = None
|
|
if 'user' in data and data.get('user') != getpass.getuser():
|
|
vv("the target user doesn't match this user, we'll move the file into place via sudo")
|
|
(fd,out_path) = tempfile.mkstemp(prefix='ansible.', dir=os.path.expanduser('~/.ansible/tmp/'))
|
|
out_fd = os.fdopen(fd, 'w', 0)
|
|
final_path = data['out_path']
|
|
final_user = data['user']
|
|
else:
|
|
out_path = data['out_path']
|
|
out_fd = open(out_path, 'w')
|
|
|
|
try:
|
|
bytes=0
|
|
while True:
|
|
out = base64.b64decode(data['data'])
|
|
bytes += len(out)
|
|
out_fd.write(out)
|
|
response = json.dumps(dict())
|
|
response = self.server.key.Encrypt(response)
|
|
self.send_data(response)
|
|
if data['last']:
|
|
break
|
|
data = self.recv_data()
|
|
if not data:
|
|
raise ""
|
|
data = self.server.key.Decrypt(data)
|
|
data = json.loads(data)
|
|
except:
|
|
out_fd.close()
|
|
tb = traceback.format_exc()
|
|
log("failed to put the file: %s" % tb)
|
|
return dict(failed=True, stdout="Could not write the file")
|
|
|
|
vvvv("wrote %d bytes" % bytes)
|
|
out_fd.close()
|
|
|
|
if final_path:
|
|
vvv("moving %s to %s" % (out_path, final_path))
|
|
self.server.module.atomic_move(out_path, final_path)
|
|
return dict()
|
|
|
|
def daemonize(module, password, port, timeout, minutes, ipv6):
|
|
try:
|
|
daemonize_self(module, password, port, minutes)
|
|
|
|
def catcher(signum, _):
|
|
module.exit_json(msg='timer expired')
|
|
|
|
signal.signal(signal.SIGALRM, catcher)
|
|
signal.setitimer(signal.ITIMER_REAL, 60 * minutes)
|
|
|
|
if ipv6:
|
|
server = ThreadedTCPV6Server(("::", port), ThreadedTCPRequestHandler, module, password, timeout)
|
|
else:
|
|
server = ThreadedTCPServer(("0.0.0.0", port), ThreadedTCPRequestHandler, module, password, timeout)
|
|
server.allow_reuse_address = True
|
|
|
|
vv("serving!")
|
|
server.serve_forever(poll_interval=1.0)
|
|
except Exception, e:
|
|
tb = traceback.format_exc()
|
|
log("exception caught, exiting accelerated mode: %s\n%s" % (e, tb))
|
|
sys.exit(0)
|
|
|
|
def main():
|
|
global DEBUG_LEVEL
|
|
module = AnsibleModule(
|
|
argument_spec = dict(
|
|
port=dict(required=False, default=5099),
|
|
ipv6=dict(required=False, default=False),
|
|
timeout=dict(required=False, default=300),
|
|
password=dict(required=True),
|
|
minutes=dict(required=False, default=30),
|
|
debug=dict(required=False, default=0, type='int')
|
|
),
|
|
supports_check_mode=True
|
|
)
|
|
|
|
password = base64.b64decode(module.params['password'])
|
|
port = int(module.params['port'])
|
|
timeout = int(module.params['timeout'])
|
|
minutes = int(module.params['minutes'])
|
|
debug = int(module.params['debug'])
|
|
ipv6 = bool(module.params['ipv6'])
|
|
|
|
if not HAS_KEYCZAR:
|
|
module.fail_json(msg="keyczar is not installed (on the remote side)")
|
|
|
|
DEBUG_LEVEL=debug
|
|
|
|
daemonize(module, password, port, timeout, minutes, ipv6)
|
|
|
|
# this is magic, see lib/ansible/module_common.py
|
|
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
|
|
main()
|