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225 lines
8.2 KiB
225 lines
8.2 KiB
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# 2010-2013 Nico Schottelius (nico-cdist at schottelius.org)
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# 2016 Darko Poljak (darko.poljak at gmail.com)
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#
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# This file is part of cdist.
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#
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# cdist 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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# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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def inspect_ssh_mux_opts(control_path_dir="~/.ssh/"):
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"""Inspect whether or not ssh supports multiplexing options"""
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import subprocess
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import os
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# socket is always local to each cdist run, it is created in
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# temp directory that is created at starting cdist, so
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# control_path file name can be static, it will always be
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# unique due to unique temp directory name
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control_path = os.path.join(control_path_dir, "ssh-control-path")
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wanted_mux_opts = {
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"ControlPath": control_path,
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"ControlMaster": "auto",
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"ControlPersist": "125",
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}
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mux_opts = " ".join([" -o {}={}".format(x,
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wanted_mux_opts[x]) for x in wanted_mux_opts])
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try:
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subprocess.check_output("ssh {}".format(mux_opts),
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stderr=subprocess.STDOUT, shell=True)
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except subprocess.CalledProcessError as e:
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subproc_output = e.output.decode().lower()
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if "bad configuration option" in subproc_output:
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return ""
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return mux_opts
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def commandline():
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"""Parse command line"""
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import argparse
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import cdist.banner
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import cdist.config
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import cdist.shell
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import tempfile
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import shutil
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import os
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# Construct parser others can reuse
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parser = {}
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# Options _all_ parsers have in common
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parser['loglevel'] = argparse.ArgumentParser(add_help=False)
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parser['loglevel'].add_argument('-d', '--debug',
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help='Set log level to debug', action='store_true',
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default=False)
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parser['loglevel'].add_argument('-v', '--verbose',
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help='Set log level to info, be more verbose',
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action='store_true', default=False)
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# Main subcommand parser
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parser['main'] = argparse.ArgumentParser(description='cdist '
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+ cdist.VERSION,
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parents=[parser['loglevel']])
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parser['main'].add_argument('-V', '--version',
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help='Show version', action='version',
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version='%(prog)s ' + cdist.VERSION)
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parser['sub'] = parser['main'].add_subparsers(title="Commands",
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dest="command")
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# Banner
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parser['banner'] = parser['sub'].add_parser('banner',
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parents=[parser['loglevel']])
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parser['banner'].set_defaults(func=cdist.banner.banner)
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# Config
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parser['config'] = parser['sub'].add_parser('config',
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parents=[parser['loglevel']])
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parser['config'].add_argument('host', nargs='*',
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help='host(s) to operate on')
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parser['config'].add_argument('-c', '--conf-dir',
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help=('Add configuration directory (can be repeated, '
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'last one wins)'), action='append')
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parser['config'].add_argument('-f', '--file',
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help=('Read additional hosts to operate on from specified file '
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'or from stdin if \'-\' (each host on separate line). '
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'If no host or host file is specified then, by default, '
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'read hosts from stdin.'),
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dest='hostfile', required=False)
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parser['config'].add_argument('-i', '--initial-manifest',
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help='Path to a cdist manifest or \'-\' to read from stdin.',
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dest='manifest', required=False)
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parser['config'].add_argument('-n', '--dry-run',
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help='Do not execute code', action='store_true')
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parser['config'].add_argument('-o', '--out-dir',
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help='Directory to save cdist output in', dest="out_path")
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parser['config'].add_argument('-p', '--parallel',
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help='Operate on multiple hosts in parallel',
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action='store_true', dest='parallel')
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parser['config'].add_argument('-s', '--sequential',
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help='Operate on multiple hosts sequentially (default)',
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action='store_false', dest='parallel')
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# remote-copy and remote-exec defaults are environment variables
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# if set; if not then None - these will be futher handled after
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# parsing to determine implementation default
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parser['config'].add_argument('--remote-copy',
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help='Command to use for remote copy (should behave like scp)',
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action='store', dest='remote_copy',
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default=os.environ.get('CDIST_REMOTE_COPY'))
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parser['config'].add_argument('--remote-exec',
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help=('Command to use for remote execution '
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'(should behave like ssh)'),
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action='store', dest='remote_exec',
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default=os.environ.get('CDIST_REMOTE_EXEC'))
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parser['config'].set_defaults(func=cdist.config.Config.commandline)
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# Shell
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parser['shell'] = parser['sub'].add_parser('shell',
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parents=[parser['loglevel']])
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parser['shell'].add_argument('-s', '--shell',
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help='Select shell to use, defaults to current shell')
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parser['shell'].set_defaults(func=cdist.shell.Shell.commandline)
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for p in parser:
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parser[p].epilog = "Get cdist at http://www.nico.schottelius.org/software/cdist/"
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args = parser['main'].parse_args(sys.argv[1:])
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# Loglevels are handled globally in here and debug wins over verbose
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if args.verbose:
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logging.root.setLevel(logging.INFO)
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if args.debug:
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logging.root.setLevel(logging.DEBUG)
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args_dict = vars(args)
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# if command with remote_copy and remote_exec params
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if 'remote_copy' in args_dict and 'remote_exec' in args_dict:
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# if remote-exec and/or remote-copy args are None then user
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# didn't specify command line options nor env vars:
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# inspect multiplexing options for default cdist.REMOTE_COPY/EXEC
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if args_dict['remote_copy'] is None or args_dict['remote_exec'] is None:
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control_path_dir = tempfile.mkdtemp(prefix="cdist")
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import atexit
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atexit.register(lambda: shutil.rmtree(control_path_dir))
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mux_opts = inspect_ssh_mux_opts(control_path_dir)
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if args_dict['remote_exec'] is None:
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args.remote_exec = cdist.REMOTE_EXEC + mux_opts
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if args_dict['remote_copy'] is None:
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args.remote_copy = cdist.REMOTE_COPY + mux_opts
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if args.command == 'config':
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if args.manifest == '-' and args.hostfile == '-':
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print('cdist config: error: cannot read both, manifest and host file, from stdin')
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sys.exit(1)
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log.debug(args)
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log.info("version %s" % cdist.VERSION)
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# Work around python 3.3 bug:
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# http://bugs.python.org/issue16308
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# http://bugs.python.org/issue9253
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# FIXME: catching AttributeError also hides
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# real problems.. try a different way
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# FIXME: we always print main help, not
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# the help of the actual parser being used!
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try:
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getattr(args, "func")
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except AttributeError:
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parser['main'].print_help()
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sys.exit(0)
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args.func(args)
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if __name__ == "__main__":
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# Sys is needed for sys.exit()
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import sys
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cdistpythonversion = '3.2'
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if sys.version < cdistpythonversion:
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print('Python >= ' + cdistpythonversion +
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' is required on the source host.', file=sys.stderr)
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sys.exit(1)
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exit_code = 0
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try:
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import logging
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import os
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import re
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import cdist
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import cdist.log
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logging.setLoggerClass(cdist.log.Log)
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logging.basicConfig(format='%(levelname)s: %(message)s')
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log = logging.getLogger("cdist")
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if re.match("__", os.path.basename(sys.argv[0])):
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import cdist.emulator
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emulator = cdist.emulator.Emulator(sys.argv)
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emulator.run()
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else:
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commandline()
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except KeyboardInterrupt:
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exit_code = 2
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except cdist.Error as e:
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log.error(e)
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exit_code = 1
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sys.exit(exit_code)
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