mirror of https://github.com/ansible/ansible.git
Bulk spelling improvement to modules-core (#5225)
* Correct spelling mistakes * Correct more spelling issues * merge conflict * Revert typo in parmspull/18777/head
John R Barker
8 years ago
committed by
Matt Clay
parent
a4077537e0
commit
25b6492d37
@ -0,0 +1,741 @@
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2013, James Cammarata <jcammarata@ansible.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: accelerate
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short_description: Enable accelerated mode on remote node
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deprecated: "in favor of SSH with ControlPersist"
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description:
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- This modules launches an ephemeral I(accelerate) daemon on the remote node which
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Ansible can use to communicate with nodes at high speed.
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- The daemon listens on a configurable port for a configurable amount of time.
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- Fireball mode is AES encrypted
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version_added: "1.3"
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options:
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port:
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description:
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- TCP port for the socket connection
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required: false
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default: 5099
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aliases: []
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timeout:
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description:
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- 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.
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required: false
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default: 300
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aliases: []
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minutes:
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description:
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- The I(accelerate) listener daemon is started on nodes and will stay around for
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this number of minutes before turning itself off.
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required: false
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default: 30
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ipv6:
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description:
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- The listener daemon on the remote host will bind to the ipv6 localhost socket
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if this parameter is set to true.
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required: false
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default: false
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multi_key:
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description:
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- When enabled, the daemon will open a local socket file which can be used by future daemon executions to
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upload a new key to the already running daemon, so that multiple users can connect using different keys.
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This access still requires an ssh connection as the uid for which the daemon is currently running.
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required: false
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default: no
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version_added: "1.6"
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notes:
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- See the advanced playbooks chapter for more about using accelerated mode.
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requirements:
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- "python >= 2.4"
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- "python-keyczar"
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author: "James Cammarata (@jimi-c)"
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'''
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EXAMPLES = '''
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# To use accelerate mode, simply add "accelerate: true" to your play. The initial
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# key exchange and starting up of the daemon will occur over SSH, but all commands and
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# subsequent actions will be conducted over the raw socket connection using AES encryption
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- hosts: devservers
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accelerate: true
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tasks:
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- command: /usr/bin/anything
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'''
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import base64
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import errno
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import getpass
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import json
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import os
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import os.path
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import pwd
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import signal
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import socket
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import struct
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import sys
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import syslog
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import tempfile
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import time
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import traceback
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import SocketServer
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import datetime
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from threading import Thread, Lock
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# import module snippets
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# we must import this here at the top so we can use get_module_path()
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from ansible.module_utils.basic import *
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# the chunk size to read and send, assuming mtu 1500 and
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# leaving room for base64 (+33%) encoding and header (100 bytes)
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# 4 * (975/3) + 100 = 1400
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# which leaves room for the TCP/IP header
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CHUNK_SIZE=10240
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# FIXME: this all should be moved to module_common, as it's
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# pretty much a copy from the callbacks/util code
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DEBUG_LEVEL=0
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def log(msg, cap=0):
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global DEBUG_LEVEL
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if DEBUG_LEVEL >= cap:
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syslog.syslog(syslog.LOG_NOTICE|syslog.LOG_DAEMON, msg)
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def v(msg):
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log(msg, cap=1)
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def vv(msg):
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log(msg, cap=2)
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def vvv(msg):
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log(msg, cap=3)
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def vvvv(msg):
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log(msg, cap=4)
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HAS_KEYCZAR = False
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try:
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from keyczar.keys import AesKey
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HAS_KEYCZAR = True
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except ImportError:
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pass
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SOCKET_FILE = os.path.join(get_module_path(), '.ansible-accelerate', ".local.socket")
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def get_pid_location(module):
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"""
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Try to find a pid directory in the common locations, falling
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back to the user's home directory if no others exist
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"""
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for dir in ['/var/run', '/var/lib/run', '/run', os.path.expanduser("~/")]:
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try:
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if os.path.isdir(dir) and os.access(dir, os.R_OK|os.W_OK):
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return os.path.join(dir, '.accelerate.pid')
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except:
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pass
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module.fail_json(msg="couldn't find any valid directory to use for the accelerate pid file")
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# NOTE: this shares a fair amount of code in common with async_wrapper, if async_wrapper were a new module we could move
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# this into utils.module_common and probably should anyway
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def daemonize_self(module, password, port, minutes, pid_file):
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# daemonizing code: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66012
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try:
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pid = os.fork()
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if pid > 0:
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vvv("exiting pid %s" % pid)
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# exit first parent
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module.exit_json(msg="daemonized accelerate on port %s for %s minutes with pid %s" % (port, minutes, str(pid)))
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except OSError:
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e = get_exception()
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message = "fork #1 failed: %d (%s)" % (e.errno, e.strerror)
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module.fail_json(msg=message)
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# decouple from parent environment
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os.chdir("/")
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os.setsid()
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os.umask(int('O22', 8))
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# do second fork
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try:
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pid = os.fork()
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if pid > 0:
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log("daemon pid %s, writing %s" % (pid, pid_file))
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pid_file = open(pid_file, "w")
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pid_file.write("%s" % pid)
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pid_file.close()
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vvv("pid file written")
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sys.exit(0)
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except OSError:
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e = get_exception()
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log('fork #2 failed: %d (%s)' % (e.errno, e.strerror))
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sys.exit(1)
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dev_null = file('/dev/null','rw')
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os.dup2(dev_null.fileno(), sys.stdin.fileno())
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os.dup2(dev_null.fileno(), sys.stdout.fileno())
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os.dup2(dev_null.fileno(), sys.stderr.fileno())
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log("daemonizing successful")
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class LocalSocketThread(Thread):
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server = None
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terminated = False
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def __init__(self, group=None, target=None, name=None, args=(), kwargs={}, Verbose=None):
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self.server = kwargs.get('server')
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Thread.__init__(self, group, target, name, args, kwargs, Verbose)
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def run(self):
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try:
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if os.path.exists(SOCKET_FILE):
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os.remove(SOCKET_FILE)
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else:
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dir = os.path.dirname(SOCKET_FILE)
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if os.path.exists(dir):
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if not os.path.isdir(dir):
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log("The socket file path (%s) exists, but is not a directory. No local connections will be available" % dir)
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return
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else:
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# make sure the directory is accessible only to this
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# user, as socket files derive their permissions from
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# the directory that contains them
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os.chmod(dir, int('0700', 8))
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elif not os.path.exists(dir):
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os.makedirs(dir, int('O700', 8))
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except OSError:
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pass
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self.s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self.s.bind(SOCKET_FILE)
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self.s.listen(5)
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while not self.terminated:
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try:
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conn, addr = self.s.accept()
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vv("received local connection")
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data = ""
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while "\n" not in data:
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data += conn.recv(2048)
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try:
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try:
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new_key = AesKey.Read(data.strip())
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found = False
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for key in self.server.key_list:
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try:
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new_key.Decrypt(key.Encrypt("foo"))
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found = True
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break
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except:
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pass
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if not found:
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vv("adding new key to the key list")
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self.server.key_list.append(new_key)
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conn.sendall("OK\n")
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else:
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vv("key already exists in the key list, ignoring")
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conn.sendall("EXISTS\n")
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# update the last event time so the server doesn't
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# shutdown sooner than expected for new clients
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try:
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self.server.last_event_lock.acquire()
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self.server.last_event = datetime.datetime.now()
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finally:
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self.server.last_event_lock.release()
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except Exception:
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e = get_exception()
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vv("key loaded locally was invalid, ignoring (%s)" % e)
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conn.sendall("BADKEY\n")
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finally:
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try:
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conn.close()
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except:
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pass
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except:
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pass
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def terminate(self):
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super(LocalSocketThread, self).terminate()
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self.terminated = True
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self.s.shutdown(socket.SHUT_RDWR)
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self.s.close()
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class ThreadWithReturnValue(Thread):
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def __init__(self, group=None, target=None, name=None, args=(), kwargs={}, Verbose=None):
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Thread.__init__(self, group, target, name, args, kwargs, Verbose)
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self._return = None
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def run(self):
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if self._Thread__target is not None:
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self._return = self._Thread__target(*self._Thread__args,
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**self._Thread__kwargs)
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def join(self,timeout=None):
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Thread.join(self, timeout=timeout)
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return self._return
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class ThreadedTCPServer(SocketServer.ThreadingTCPServer):
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key_list = []
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last_event = datetime.datetime.now()
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last_event_lock = Lock()
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def __init__(self, server_address, RequestHandlerClass, module, password, timeout, use_ipv6=False):
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self.module = module
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self.key_list.append(AesKey.Read(password))
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self.allow_reuse_address = True
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self.timeout = timeout
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if use_ipv6:
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self.address_family = socket.AF_INET6
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if self.module.params.get('multi_key', False):
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vv("starting thread to handle local connections for multiple keys")
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self.local_thread = LocalSocketThread(kwargs=dict(server=self))
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self.local_thread.start()
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SocketServer.ThreadingTCPServer.__init__(self, server_address, RequestHandlerClass)
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def shutdown(self):
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self.running = False
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SocketServer.ThreadingTCPServer.shutdown(self)
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class ThreadedTCPRequestHandler(SocketServer.BaseRequestHandler):
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# the key to use for this connection
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active_key = None
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def send_data(self, data):
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try:
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self.server.last_event_lock.acquire()
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self.server.last_event = datetime.datetime.now()
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finally:
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self.server.last_event_lock.release()
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packed_len = struct.pack('!Q', len(data))
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return self.request.sendall(packed_len + data)
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def recv_data(self):
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header_len = 8 # size of a packed unsigned long long
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data = ""
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vvvv("in recv_data(), waiting for the header")
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while len(data) < header_len:
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try:
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d = self.request.recv(header_len - len(data))
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if not d:
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vvv("received nothing, bailing out")
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return None
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data += d
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except:
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# probably got a connection reset
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vvvv("exception received while waiting for recv(), returning None")
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return None
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vvvv("in recv_data(), got the header, unpacking")
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data_len = struct.unpack('!Q',data[:header_len])[0]
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data = data[header_len:]
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vvvv("data received so far (expecting %d): %d" % (data_len,len(data)))
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while len(data) < data_len:
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try:
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d = self.request.recv(data_len - len(data))
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if not d:
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vvv("received nothing, bailing out")
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return None
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data += d
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vvvv("data received so far (expecting %d): %d" % (data_len,len(data)))
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except:
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# probably got a connection reset
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vvvv("exception received while waiting for recv(), returning None")
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return None
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vvvv("received all of the data, returning")
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try:
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self.server.last_event_lock.acquire()
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self.server.last_event = datetime.datetime.now()
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finally:
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self.server.last_event_lock.release()
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return data
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def handle(self):
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try:
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while True:
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vvvv("waiting for data")
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data = self.recv_data()
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if not data:
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vvvv("received nothing back from recv_data(), breaking out")
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break
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vvvv("got data, decrypting")
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if not self.active_key:
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for key in self.server.key_list:
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try:
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data = key.Decrypt(data)
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self.active_key = key
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break
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except:
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pass
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else:
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vv("bad decrypt, exiting the connection handler")
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return
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else:
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try:
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data = self.active_key.Decrypt(data)
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except:
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vv("bad decrypt, exiting the connection handler")
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return
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vvvv("decryption done, loading json from the data")
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data = json.loads(data)
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mode = data['mode']
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response = {}
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last_pong = datetime.datetime.now()
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if mode == 'command':
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vvvv("received a command request, running it")
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twrv = ThreadWithReturnValue(target=self.command, args=(data,))
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twrv.start()
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response = None
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while twrv.is_alive():
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if (datetime.datetime.now() - last_pong).seconds >= 15:
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last_pong = datetime.datetime.now()
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vvvv("command still running, sending keepalive packet")
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data2 = json.dumps(dict(pong=True))
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data2 = self.active_key.Encrypt(data2)
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self.send_data(data2)
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time.sleep(0.1)
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response = twrv._return
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vvvv("thread is done, response from join was %s" % response)
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elif mode == 'put':
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vvvv("received a put request, putting it")
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response = self.put(data)
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elif mode == 'fetch':
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vvvv("received a fetch request, getting it")
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response = self.fetch(data)
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||||
elif mode == 'validate_user':
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vvvv("received a request to validate the user id")
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response = self.validate_user(data)
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||||
|
||||
vvvv("response result is %s" % str(response))
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||||
json_response = json.dumps(response)
|
||||
vvvv("dumped json is %s" % json_response)
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data2 = self.active_key.Encrypt(json_response)
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||||
vvvv("sending the response back to the controller")
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self.send_data(data2)
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vvvv("done sending the response")
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||||
|
||||
if mode == 'validate_user' and response.get('rc') == 1:
|
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vvvv("detected a uid mismatch, shutting down")
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self.server.shutdown()
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||||
except:
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tb = traceback.format_exc()
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||||
log("encountered an unhandled exception in the handle() function")
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||||
log("error was:\n%s" % tb)
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||||
if self.active_key:
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||||
data2 = json.dumps(dict(rc=1, failed=True, msg="unhandled error in the handle() function"))
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||||
data2 = self.active_key.Encrypt(data2)
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self.send_data(data2)
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||||
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||||
def validate_user(self, data):
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if 'username' not in data:
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return dict(failed=True, msg='No username specified')
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||||
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||||
vvvv("validating we're running as %s" % data['username'])
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||||
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||||
# get the current uid
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||||
c_uid = os.getuid()
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try:
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||||
# the target uid
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||||
t_uid = pwd.getpwnam(data['username']).pw_uid
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||||
except:
|
||||
vvvv("could not find user %s" % data['username'])
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||||
return dict(failed=True, msg='could not find user %s' % data['username'])
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||||
|
||||
# and return rc=0 for success, rc=1 for failure
|
||||
if c_uid == t_uid:
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||||
return dict(rc=0)
|
||||
else:
|
||||
return dict(rc=1)
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||||
|
||||
def command(self, data):
|
||||
if 'cmd' not in data:
|
||||
return dict(failed=True, msg='internal error: cmd is required')
|
||||
|
||||
vvvv("executing: %s" % data['cmd'])
|
||||
|
||||
use_unsafe_shell = False
|
||||
executable = data.get('executable')
|
||||
if executable:
|
||||
use_unsafe_shell = True
|
||||
|
||||
rc, stdout, stderr = self.server.module.run_command(data['cmd'], executable=executable, use_unsafe_shell=use_unsafe_shell, 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.active_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.active_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 = get_exception()
|
||||
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
|
||||
if 'user' in data and data.get('user') != getpass.getuser():
|
||||
vvv("the target user doesn't match this user, we'll move the file into place via sudo")
|
||||
tmp_path = os.path.expanduser('~/.ansible/tmp/')
|
||||
if not os.path.exists(tmp_path):
|
||||
try:
|
||||
os.makedirs(tmp_path, int('O700', 8))
|
||||
except:
|
||||
return dict(failed=True, msg='could not create a temporary directory at %s' % tmp_path)
|
||||
(fd,out_path) = tempfile.mkstemp(prefix='ansible.', dir=tmp_path)
|
||||
out_fd = os.fdopen(fd, 'w', 0)
|
||||
final_path = data['out_path']
|
||||
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.active_key.Encrypt(response)
|
||||
self.send_data(response)
|
||||
if data['last']:
|
||||
break
|
||||
data = self.recv_data()
|
||||
if not data:
|
||||
raise ""
|
||||
data = self.active_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, use_ipv6, pid_file):
|
||||
try:
|
||||
daemonize_self(module, password, port, minutes, pid_file)
|
||||
|
||||
def timer_handler(signum, _):
|
||||
try:
|
||||
try:
|
||||
server.last_event_lock.acquire()
|
||||
td = datetime.datetime.now() - server.last_event
|
||||
# older python timedelta objects don't have total_seconds(),
|
||||
# so we use the formula from the docs to calculate it
|
||||
total_seconds = (td.microseconds + (td.seconds + td.days * 24 * 3600) * 10**6) / 10**6
|
||||
if total_seconds >= minutes * 60:
|
||||
log("server has been idle longer than the timeout, shutting down")
|
||||
server.running = False
|
||||
server.shutdown()
|
||||
else:
|
||||
# reschedule the check
|
||||
signal.alarm(1)
|
||||
except:
|
||||
pass
|
||||
finally:
|
||||
server.last_event_lock.release()
|
||||
|
||||
signal.signal(signal.SIGALRM, timer_handler)
|
||||
signal.alarm(1)
|
||||
|
||||
tries = 5
|
||||
while tries > 0:
|
||||
try:
|
||||
if use_ipv6:
|
||||
address = ("::", port)
|
||||
else:
|
||||
address = ("0.0.0.0", port)
|
||||
server = ThreadedTCPServer(address, ThreadedTCPRequestHandler, module, password, timeout, use_ipv6=use_ipv6)
|
||||
server.allow_reuse_address = True
|
||||
break
|
||||
except Exception:
|
||||
e = get_exception()
|
||||
vv("Failed to create the TCP server (tries left = %d) (error: %s) " % (tries,e))
|
||||
tries -= 1
|
||||
time.sleep(0.2)
|
||||
|
||||
if tries == 0:
|
||||
vv("Maximum number of attempts to create the TCP server reached, bailing out")
|
||||
raise Exception("max # of attempts to serve reached")
|
||||
|
||||
# run the server in a separate thread to make signal handling work
|
||||
server_thread = Thread(target=server.serve_forever, kwargs=dict(poll_interval=0.1))
|
||||
server_thread.start()
|
||||
server.running = True
|
||||
|
||||
v("serving!")
|
||||
while server.running:
|
||||
time.sleep(1)
|
||||
|
||||
# wait for the thread to exit fully
|
||||
server_thread.join()
|
||||
|
||||
v("server thread terminated, exiting!")
|
||||
sys.exit(0)
|
||||
except Exception:
|
||||
e = get_exception()
|
||||
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, type='bool'),
|
||||
multi_key=dict(required=False, default=False, type='bool'),
|
||||
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
|
||||
)
|
||||
|
||||
syslog.openlog('ansible-%s' % module._name)
|
||||
|
||||
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 = module.params['ipv6']
|
||||
multi_key = module.params['multi_key']
|
||||
|
||||
if not HAS_KEYCZAR:
|
||||
module.fail_json(msg="keyczar is not installed (on the remote side)")
|
||||
|
||||
DEBUG_LEVEL=debug
|
||||
pid_file = get_pid_location(module)
|
||||
|
||||
daemon_pid = None
|
||||
daemon_running = False
|
||||
if os.path.exists(pid_file):
|
||||
try:
|
||||
daemon_pid = int(open(pid_file).read())
|
||||
try:
|
||||
# sending signal 0 doesn't do anything to the
|
||||
# process, other than tell the calling program
|
||||
# whether other signals can be sent
|
||||
os.kill(daemon_pid, 0)
|
||||
except OSError:
|
||||
e = get_exception()
|
||||
message = 'the accelerate daemon appears to be running'
|
||||
message += 'as a different user that this user cannot access'
|
||||
message += 'pid=%s' % daemon_pid
|
||||
|
||||
if e.errno == errno.EPERM:
|
||||
# no permissions means the pid is probably
|
||||
# running, but as a different user, so fail
|
||||
module.fail_json(msg=message)
|
||||
else:
|
||||
daemon_running = True
|
||||
except ValueError:
|
||||
# invalid pid file, unlink it - otherwise we don't care
|
||||
try:
|
||||
os.unlink(pid_file)
|
||||
except:
|
||||
pass
|
||||
|
||||
if daemon_running and multi_key:
|
||||
# try to connect to the file socket for the daemon if it exists
|
||||
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
||||
try:
|
||||
try:
|
||||
s.connect(SOCKET_FILE)
|
||||
s.sendall(password + '\n')
|
||||
data = ""
|
||||
while '\n' not in data:
|
||||
data += s.recv(2048)
|
||||
res = data.strip()
|
||||
except:
|
||||
module.fail_json(msg="failed to connect to the local socket file")
|
||||
finally:
|
||||
try:
|
||||
s.close()
|
||||
except:
|
||||
pass
|
||||
|
||||
if res in ("OK", "EXISTS"):
|
||||
module.exit_json(msg="transferred new key to the existing daemon")
|
||||
else:
|
||||
module.fail_json(msg="could not transfer new key: %s" % data.strip())
|
||||
else:
|
||||
# try to start up the daemon
|
||||
daemonize(module, password, port, timeout, minutes, ipv6, pid_file)
|
||||
|
||||
main()
|
||||
Loading…
Reference in New Issue