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Diffstat (limited to 'lib/ansible/plugins/connections/chroot.py')
-rw-r--r-- | lib/ansible/plugins/connections/chroot.py | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/lib/ansible/plugins/connections/chroot.py b/lib/ansible/plugins/connections/chroot.py new file mode 100644 index 0000000000..3ecc0f7030 --- /dev/null +++ b/lib/ansible/plugins/connections/chroot.py @@ -0,0 +1,134 @@ +# Based on local.py (c) 2012, Michael DeHaan <michael.dehaan@gmail.com> +# (c) 2013, Maykel Moya <mmoya@speedyrails.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/>. +from __future__ import (absolute_import, division, print_function) +__metaclass__ = type + +import distutils.spawn +import traceback +import os +import shutil +import subprocess +from ansible import errors +from ansible import utils +from ansible.callbacks import vvv +import ansible.constants as C + +class Connection(object): + ''' Local chroot based connections ''' + + def __init__(self, runner, host, port, *args, **kwargs): + self.chroot = host + self.has_pipelining = False + self.become_methods_supported=C.BECOME_METHODS + + if os.geteuid() != 0: + raise errors.AnsibleError("chroot connection requires running as root") + + # we're running as root on the local system so do some + # trivial checks for ensuring 'host' is actually a chroot'able dir + if not os.path.isdir(self.chroot): + raise errors.AnsibleError("%s is not a directory" % self.chroot) + + chrootsh = os.path.join(self.chroot, 'bin/sh') + if not utils.is_executable(chrootsh): + raise errors.AnsibleError("%s does not look like a chrootable dir (/bin/sh missing)" % self.chroot) + + self.chroot_cmd = distutils.spawn.find_executable('chroot') + if not self.chroot_cmd: + raise errors.AnsibleError("chroot command not found in PATH") + + self.runner = runner + self.host = host + # port is unused, since this is local + self.port = port + + def connect(self, port=None): + ''' connect to the chroot; nothing to do here ''' + + vvv("THIS IS A LOCAL CHROOT DIR", host=self.chroot) + + return self + + def exec_command(self, cmd, tmp_path, become_user=None, sudoable=False, executable='/bin/sh', in_data=None): + ''' run a command on the chroot ''' + + if sudoable and self.runner.become and self.runner.become_method not in self.become_methods_supported: + raise errors.AnsibleError("Internal Error: this module does not support running commands via %s" % self.runner.become_method) + + if in_data: + raise errors.AnsibleError("Internal Error: this module does not support optimized module pipelining") + + # We enter chroot as root so we ignore privlege escalation? + + if executable: + local_cmd = [self.chroot_cmd, self.chroot, executable, '-c', cmd] + else: + local_cmd = '%s "%s" %s' % (self.chroot_cmd, self.chroot, cmd) + + vvv("EXEC %s" % (local_cmd), host=self.chroot) + p = subprocess.Popen(local_cmd, shell=isinstance(local_cmd, basestring), + cwd=self.runner.basedir, + stdin=subprocess.PIPE, + stdout=subprocess.PIPE, stderr=subprocess.PIPE) + + stdout, stderr = p.communicate() + return (p.returncode, '', stdout, stderr) + + def put_file(self, in_path, out_path): + ''' transfer a file from local to chroot ''' + + if not out_path.startswith(os.path.sep): + out_path = os.path.join(os.path.sep, out_path) + normpath = os.path.normpath(out_path) + out_path = os.path.join(self.chroot, normpath[1:]) + + vvv("PUT %s TO %s" % (in_path, out_path), host=self.chroot) + if not os.path.exists(in_path): + raise errors.AnsibleFileNotFound("file or module does not exist: %s" % in_path) + try: + shutil.copyfile(in_path, out_path) + except shutil.Error: + traceback.print_exc() + raise errors.AnsibleError("failed to copy: %s and %s are the same" % (in_path, out_path)) + except IOError: + traceback.print_exc() + raise errors.AnsibleError("failed to transfer file to %s" % out_path) + + def fetch_file(self, in_path, out_path): + ''' fetch a file from chroot to local ''' + + if not in_path.startswith(os.path.sep): + in_path = os.path.join(os.path.sep, in_path) + normpath = os.path.normpath(in_path) + in_path = os.path.join(self.chroot, normpath[1:]) + + vvv("FETCH %s TO %s" % (in_path, out_path), host=self.chroot) + if not os.path.exists(in_path): + raise errors.AnsibleFileNotFound("file or module does not exist: %s" % in_path) + try: + shutil.copyfile(in_path, out_path) + except shutil.Error: + traceback.print_exc() + raise errors.AnsibleError("failed to copy: %s and %s are the same" % (in_path, out_path)) + except IOError: + traceback.print_exc() + raise errors.AnsibleError("failed to transfer file to %s" % out_path) + + def close(self): + ''' terminate the connection; nothing to do here ''' + pass |