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https://github.com/ansible-collections/community.general.git
synced 2025-04-24 11:21:25 -07:00
4ed88512e4
We couldn't copy to_unicode, to_bytes, to_str into module_utils because of licensing. So once created it we had two sets of functions that did the same things but had different implementations. To remedy that, this change removes the ansible.utils.unicode versions of those functions.
217 lines
7.8 KiB
Python
217 lines
7.8 KiB
Python
# (c) 2015, Joerg Thalheim <joerg@higgsboson.tk>
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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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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import shutil
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import traceback
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import select
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import fcntl
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import errno
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HAS_LIBLXC = False
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try:
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import lxc as _lxc
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HAS_LIBLXC = True
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except ImportError:
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pass
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from ansible import constants as C
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from ansible import errors
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from ansible.module_utils._text import to_bytes
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from ansible.plugins.connection import ConnectionBase
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class Connection(ConnectionBase):
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''' Local lxc based connections '''
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transport = 'lxc'
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has_pipelining = True
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become_methods = frozenset(C.BECOME_METHODS)
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def __init__(self, play_context, new_stdin, *args, **kwargs):
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super(Connection, self).__init__(play_context, new_stdin, *args, **kwargs)
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self.container_name = self._play_context.remote_addr
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self.container = None
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def _connect(self):
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''' connect to the lxc; nothing to do here '''
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super(Connection, self)._connect()
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if not HAS_LIBLXC:
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msg = "lxc bindings for python2 are not installed"
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raise errors.AnsibleError(msg)
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if self.container:
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return
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self._display.vvv("THIS IS A LOCAL LXC DIR", host=self.container_name)
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self.container = _lxc.Container(self.container_name)
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if self.container.state == "STOPPED":
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raise errors.AnsibleError("%s is not running" % self.container_name)
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def _communicate(self, pid, in_data, stdin, stdout, stderr):
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buf = { stdout: [], stderr: [] }
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read_fds = [stdout, stderr]
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if in_data:
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write_fds = [stdin]
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else:
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write_fds = []
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while len(read_fds) > 0 or len(write_fds) > 0:
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try:
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ready_reads, ready_writes, _ = select.select(read_fds, write_fds, [])
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except select.error as e:
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if e.args[0] == errno.EINTR:
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continue
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raise
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for fd in ready_writes:
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in_data = in_data[os.write(fd, in_data):]
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if len(in_data) == 0:
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write_fds.remove(fd)
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for fd in ready_reads:
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data = os.read(fd, 32768)
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if not data:
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read_fds.remove(fd)
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buf[fd].append(data)
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(pid, returncode) = os.waitpid(pid, 0)
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return returncode, b"".join(buf[stdout]), b"".join(buf[stderr])
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def _set_nonblocking(self, fd):
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flags = fcntl.fcntl(fd, fcntl.F_GETFL) | os.O_NONBLOCK
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fcntl.fcntl(fd, fcntl.F_SETFL, flags)
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return fd
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def exec_command(self, cmd, in_data=None, sudoable=False):
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''' run a command on the chroot '''
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super(Connection, self).exec_command(cmd, in_data=in_data, sudoable=sudoable)
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executable = to_bytes(self._play_context.executable, errors='surrogate_or_strict')
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local_cmd = [executable, '-c', to_bytes(cmd, errors='surrogate_or_strict')]
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read_stdout, write_stdout = None, None
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read_stderr, write_stderr = None, None
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read_stdin, write_stdin = None, None
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try:
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read_stdout, write_stdout = os.pipe()
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read_stderr, write_stderr = os.pipe()
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kwargs = {
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'stdout': self._set_nonblocking(write_stdout),
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'stderr': self._set_nonblocking(write_stderr),
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'env_policy': _lxc.LXC_ATTACH_CLEAR_ENV
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}
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if in_data:
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read_stdin, write_stdin = os.pipe()
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kwargs['stdin'] = self._set_nonblocking(read_stdin)
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self._display.vvv("EXEC %s" % (local_cmd), host=self.container_name)
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pid = self.container.attach(_lxc.attach_run_command, local_cmd, **kwargs)
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if pid == -1:
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msg = "failed to attach to container %s" % self.container_name
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raise errors.AnsibleError(msg)
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write_stdout = os.close(write_stdout)
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write_stderr = os.close(write_stderr)
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if read_stdin:
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read_stdin = os.close(read_stdin)
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return self._communicate(pid,
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in_data,
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write_stdin,
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read_stdout,
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read_stderr)
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finally:
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fds = [read_stdout,
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write_stdout,
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read_stderr,
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write_stderr,
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read_stdin,
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write_stdin]
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for fd in fds:
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if fd:
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os.close(fd)
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def put_file(self, in_path, out_path):
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''' transfer a file from local to lxc '''
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super(Connection, self).put_file(in_path, out_path)
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self._display.vvv("PUT %s TO %s" % (in_path, out_path), host=self.container_name)
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in_path = to_bytes(in_path, errors='surrogate_or_strict')
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out_path = to_bytes(out_path, errors='surrogate_or_strict')
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if not os.path.exists(in_path):
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msg = "file or module does not exist: %s" % in_path
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raise errors.AnsibleFileNotFound(msg)
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try:
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src_file = open(in_path, "rb")
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except IOError:
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traceback.print_exc()
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raise errors.AnsibleError("failed to open input file to %s" % in_path)
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try:
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def write_file(args):
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with open(out_path, 'wb+') as dst_file:
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shutil.copyfileobj(src_file, dst_file)
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try:
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self.container.attach_wait(write_file, None)
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except IOError:
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traceback.print_exc()
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msg = "failed to transfer file to %s" % out_path
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raise errors.AnsibleError(msg)
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finally:
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src_file.close()
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def fetch_file(self, in_path, out_path):
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''' fetch a file from lxc to local '''
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super(Connection, self).fetch_file(in_path, out_path)
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self._display.vvv("FETCH %s TO %s" % (in_path, out_path), host=self.container_name)
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in_path = to_bytes(in_path, errors='surrogate_or_strict')
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out_path = to_bytes(out_path, errors='surrogate_or_strict')
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try:
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dst_file = open(out_path, "wb")
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except IOError:
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traceback.print_exc()
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msg = "failed to open output file %s" % out_path
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raise errors.AnsibleError(msg)
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try:
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def write_file(args):
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try:
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with open(in_path, 'rb') as src_file:
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shutil.copyfileobj(src_file, dst_file)
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finally:
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# this is needed in the lxc child process
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# to flush internal python buffers
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dst_file.close()
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try:
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self.container.attach_wait(write_file, None)
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except IOError:
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traceback.print_exc()
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msg = "failed to transfer file from %s to %s" % (in_path, out_path)
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raise errors.AnsibleError(msg)
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finally:
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dst_file.close()
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def close(self):
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''' terminate the connection; nothing to do here '''
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super(Connection, self).close()
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self._connected = False
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