307 lines
11 KiB
Python
307 lines
11 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
|
|
# 2011-2015 Nico Schottelius (nico-cdist at schottelius.org)
|
|
# 2016 Darko Poljak (darko.poljak at gmail.com)
|
|
#
|
|
# This file is part of cdist.
|
|
#
|
|
# cdist 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.
|
|
#
|
|
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
#
|
|
|
|
import io
|
|
import os
|
|
import sys
|
|
import re
|
|
import subprocess
|
|
import shutil
|
|
import logging
|
|
import tempfile
|
|
import hashlib
|
|
|
|
import cdist
|
|
import cdist.message
|
|
from cdist import core
|
|
import cdist.exec.util as exec_util
|
|
|
|
CONF_SUBDIRS_LINKED = ["explorer", "files", "manifest", "type", ]
|
|
|
|
|
|
class Local(object):
|
|
"""Execute commands locally.
|
|
|
|
All interaction with the local side should be done through this class.
|
|
Directly accessing the local side from python code is a bug.
|
|
|
|
"""
|
|
def __init__(self,
|
|
target_host,
|
|
exec_path=sys.argv[0],
|
|
initial_manifest=None,
|
|
base_path=None,
|
|
add_conf_dirs=None):
|
|
|
|
self.target_host = target_host
|
|
self._init_log()
|
|
|
|
# FIXME: stopped: create base that does not require moving later
|
|
if base_path:
|
|
base_path_parent = base_path
|
|
else:
|
|
base_path_parent = tempfile.mkdtemp()
|
|
# TODO: the below atexit hook nukes any debug info we would have
|
|
# if cdist exits with error.
|
|
# import atexit
|
|
# atexit.register(lambda: shutil.rmtree(base_path_parent))
|
|
self.hostdir = self._hostdir()
|
|
self.log.info("Calculated temp dir for target \"{}\" is "
|
|
"\"{}\"".format(self.target_host, self.hostdir))
|
|
self.base_path = os.path.join(base_path_parent, self.hostdir)
|
|
|
|
self._init_permissions()
|
|
|
|
self.mkdir(self.base_path)
|
|
|
|
# FIXME: as well
|
|
self._init_cache_dir(None)
|
|
|
|
self.exec_path = exec_path
|
|
self.custom_initial_manifest = initial_manifest
|
|
|
|
self._add_conf_dirs = add_conf_dirs
|
|
|
|
self._init_paths()
|
|
self._init_object_marker()
|
|
self._init_conf_dirs()
|
|
|
|
@property
|
|
def dist_conf_dir(self):
|
|
return os.path.abspath(os.path.join(os.path.dirname(cdist.__file__),
|
|
"conf"))
|
|
|
|
@property
|
|
def home_dir(self):
|
|
if 'HOME' in os.environ:
|
|
return os.path.join(os.environ['HOME'], ".cdist")
|
|
else:
|
|
return None
|
|
|
|
def _hostdir(self):
|
|
# Do not assume target_host is anything that can be used as a
|
|
# directory name.
|
|
# Instead use a hash, which is known to work as directory name.
|
|
return hashlib.md5(self.target_host.encode('utf-8')).hexdigest()
|
|
|
|
def _init_log(self):
|
|
self.log = logging.getLogger(self.target_host)
|
|
|
|
def _init_permissions(self):
|
|
# Setup file permissions using umask
|
|
os.umask(0o077)
|
|
|
|
def _init_paths(self):
|
|
# Depending on out_path
|
|
self.bin_path = os.path.join(self.base_path, "bin")
|
|
self.conf_path = os.path.join(self.base_path, "conf")
|
|
self.global_explorer_out_path = os.path.join(self.base_path,
|
|
"explorer")
|
|
self.object_path = os.path.join(self.base_path, "object")
|
|
self.messages_path = os.path.join(self.base_path, "messages")
|
|
self.files_path = os.path.join(self.conf_path, "files")
|
|
|
|
# Depending on conf_path
|
|
self.global_explorer_path = os.path.join(self.conf_path, "explorer")
|
|
self.manifest_path = os.path.join(self.conf_path, "manifest")
|
|
self.initial_manifest = (self.custom_initial_manifest or
|
|
os.path.join(self.manifest_path, "init"))
|
|
|
|
self.type_path = os.path.join(self.conf_path, "type")
|
|
|
|
def _init_object_marker(self):
|
|
self.object_marker_file = os.path.join(self.base_path, "object_marker")
|
|
|
|
# Does not need to be secure - just randomly different from .cdist
|
|
self.object_marker_name = tempfile.mktemp(prefix='.cdist-', dir='')
|
|
|
|
def _init_conf_dirs(self):
|
|
self.conf_dirs = []
|
|
|
|
self.conf_dirs.append(self.dist_conf_dir)
|
|
|
|
# Is the default place for user created explorer, type and manifest
|
|
if self.home_dir:
|
|
self.conf_dirs.append(self.home_dir)
|
|
|
|
# Add directories defined in the CDIST_PATH environment variable
|
|
if 'CDIST_PATH' in os.environ:
|
|
cdist_path_dirs = re.split(r'(?<!\\):', os.environ['CDIST_PATH'])
|
|
cdist_path_dirs.reverse()
|
|
self.conf_dirs.extend(cdist_path_dirs)
|
|
|
|
# Add command line supplied directories
|
|
if self._add_conf_dirs:
|
|
self.conf_dirs.extend(self._add_conf_dirs)
|
|
|
|
def _init_directories(self):
|
|
self.mkdir(self.conf_path)
|
|
self.mkdir(self.global_explorer_out_path)
|
|
self.mkdir(self.object_path)
|
|
self.mkdir(self.bin_path)
|
|
|
|
def create_files_dirs(self):
|
|
self._init_directories()
|
|
self._create_conf_path_and_link_conf_dirs()
|
|
self._create_messages()
|
|
self._link_types_for_emulator()
|
|
self._setup_object_marker_file()
|
|
|
|
def _setup_object_marker_file(self):
|
|
with open(self.object_marker_file, 'w') as fd:
|
|
fd.write("%s\n" % self.object_marker_name)
|
|
|
|
self.log.debug("Object marker %s saved in %s" % (
|
|
self.object_marker_name, self.object_marker_file))
|
|
|
|
def _init_cache_dir(self, cache_dir):
|
|
if cache_dir:
|
|
self.cache_path = cache_dir
|
|
else:
|
|
if self.home_dir:
|
|
self.cache_path = os.path.join(self.home_dir, "cache")
|
|
else:
|
|
raise cdist.Error(
|
|
"No homedir setup and no cache dir location given")
|
|
|
|
def rmdir(self, path):
|
|
"""Remove directory on the local side."""
|
|
self.log.debug("Local rmdir: %s", path)
|
|
shutil.rmtree(path)
|
|
|
|
def mkdir(self, path):
|
|
"""Create directory on the local side."""
|
|
self.log.debug("Local mkdir: %s", path)
|
|
os.makedirs(path, exist_ok=True)
|
|
|
|
def run(self, command, env=None, return_output=False, message_prefix=None):
|
|
"""Run the given command with the given environment.
|
|
Return the output as a string.
|
|
|
|
"""
|
|
self.log.debug("Local run: %s", command)
|
|
assert isinstance(command, (list, tuple)), (
|
|
"list or tuple argument expected, got: %s" % command)
|
|
|
|
if env is None:
|
|
env = os.environ.copy()
|
|
# Export __target_host for use in __remote_{copy,exec} scripts
|
|
env['__target_host'] = self.target_host
|
|
|
|
# Export for emulator
|
|
env['__cdist_object_marker'] = self.object_marker_name
|
|
|
|
if message_prefix:
|
|
message = cdist.message.Message(message_prefix, self.messages_path)
|
|
env.update(message.env)
|
|
|
|
try:
|
|
output, errout = exec_util.call_get_output(command, env=env)
|
|
self.log.debug("Local stdout: {}".format(output))
|
|
self.log.debug("Local stderr: {}".format(errout))
|
|
if return_output:
|
|
return output.decode()
|
|
except subprocess.CalledProcessError as e:
|
|
exec_util.handle_called_process_error(e, command)
|
|
except OSError as error:
|
|
raise cdist.Error(" ".join(command) + ": " + error.args[1])
|
|
finally:
|
|
if message_prefix:
|
|
message.merge_messages()
|
|
|
|
def run_script(self, script, env=None, return_output=False,
|
|
message_prefix=None):
|
|
"""Run the given script with the given environment.
|
|
Return the output as a string.
|
|
|
|
"""
|
|
command = [os.environ.get('CDIST_LOCAL_SHELL', "/bin/sh"), "-e"]
|
|
command.append(script)
|
|
|
|
return self.run(command=command, env=env, return_output=return_output,
|
|
message_prefix=message_prefix)
|
|
|
|
def save_cache(self):
|
|
destination = os.path.join(self.cache_path, self.hostdir)
|
|
self.log.debug("Saving " + self.base_path + " to " + destination)
|
|
|
|
try:
|
|
if os.path.exists(destination):
|
|
shutil.rmtree(destination)
|
|
except PermissionError as e:
|
|
raise cdist.Error(
|
|
"Cannot delete old cache %s: %s" % (destination, e))
|
|
|
|
shutil.move(self.base_path, destination)
|
|
|
|
def _create_messages(self):
|
|
"""Create empty messages"""
|
|
with open(self.messages_path, "w"):
|
|
pass
|
|
|
|
def _create_conf_path_and_link_conf_dirs(self):
|
|
# Create destination directories
|
|
for sub_dir in CONF_SUBDIRS_LINKED:
|
|
self.mkdir(os.path.join(self.conf_path, sub_dir))
|
|
|
|
# Iterate over all directories and link the to the output dir
|
|
for conf_dir in self.conf_dirs:
|
|
self.log.debug("Checking conf_dir %s ..." % (conf_dir))
|
|
for sub_dir in CONF_SUBDIRS_LINKED:
|
|
current_dir = os.path.join(conf_dir, sub_dir)
|
|
|
|
# Allow conf dirs to contain only partial content
|
|
if not os.path.exists(current_dir):
|
|
continue
|
|
|
|
for entry in os.listdir(current_dir):
|
|
rel_entry_path = os.path.join(sub_dir, entry)
|
|
src = os.path.abspath(os.path.join(conf_dir,
|
|
sub_dir,
|
|
entry))
|
|
dst = os.path.join(self.conf_path, sub_dir, entry)
|
|
|
|
# Already exists? remove and link
|
|
if os.path.exists(dst):
|
|
os.unlink(dst)
|
|
|
|
self.log.debug("Linking %s to %s ..." % (src, dst))
|
|
try:
|
|
os.symlink(src, dst)
|
|
except OSError as e:
|
|
raise cdist.Error("Linking %s %s to %s failed: %s" % (
|
|
sub_dir, src, dst, e.__str__()))
|
|
|
|
def _link_types_for_emulator(self):
|
|
"""Link emulator to types"""
|
|
src = os.path.abspath(self.exec_path)
|
|
for cdist_type in core.CdistType.list_types(self.type_path):
|
|
dst = os.path.join(self.bin_path, cdist_type.name)
|
|
self.log.debug("Linking emulator: %s to %s", src, dst)
|
|
|
|
try:
|
|
os.symlink(src, dst)
|
|
except OSError as e:
|
|
raise cdist.Error(
|
|
"Linking emulator from %s to %s failed: %s" % (
|
|
src, dst, e.__str__()))
|