def ssh_execute(ssh, cmd, process_input=None,
addl_env=None, check_exit_code=True):
sanitized_cmd = strutils.mask_password(cmd)
LOG.debug('Running cmd (SSH): %s', sanitized_cmd)
if addl_env:
raise InvalidArgumentError(_('Environment not supported over SSH'))
if process_input:
# This is (probably) fixable if we need it...
raise InvalidArgumentError(_('process_input not supported over SSH'))
stdin_stream, stdout_stream, stderr_stream = ssh.exec_command(cmd)
channel = stdout_stream.channel
# NOTE(justinsb): This seems suspicious...
# ...other SSH clients have buffering issues with this approach
stdout = stdout_stream.read()
sanitized_stdout = strutils.mask_password(stdout)
stderr = stderr_stream.read()
sanitized_stderr = strutils.mask_password(stderr)
stdin_stream.close()
exit_status = channel.recv_exit_status()
# exit_status == -1 if no exit code was returned
if exit_status != -1:
LOG.debug('Result was %s' % exit_status)
if check_exit_code and exit_status != 0:
raise ProcessExecutionError(exit_code=exit_status,
stdout=sanitized_stdout,
stderr=sanitized_stderr,
cmd=sanitized_cmd)
return (sanitized_stdout, sanitized_stderr)
def __init__(self,
stdout=None,
stderr=None,
exit_code=None,
cmd=None,
description=None):
self.exit_code = exit_code
self.stderr = stderr
self.stdout = stdout
self.cmd = cmd
self.description = description
if description is None:
description = _("Unexpected error while running command.")
if exit_code is None:
exit_code = '-'
message = _('%(description)s\n'
'Command: %(cmd)s\n'
'Exit code: %(exit_code)s\n'
'Stdout: %(stdout)r\n'
'Stderr: %(stderr)r') % {
'description': description,
'cmd': cmd,
'exit_code': exit_code,
'stdout': stdout,
'stderr': stderr
}
super(ProcessExecutionError, self).__init__(message)
def acquire(self):
basedir = os.path.dirname(self.fname)
if not os.path.exists(basedir):
fileutils.ensure_tree(basedir)
LOG.info(_LI('Created lock path: %s'), basedir)
self.lockfile = open(self.fname, 'w')
while True:
try:
# Using non-blocking locks since green threads are not
# patched to deal with blocking locking calls.
# Also upon reading the MSDN docs for locking(), it seems
# to have a laughable 10 attempts "blocking" mechanism.
self.trylock()
LOG.debug('Got file lock "%s"', self.fname)
return True
except IOError as e:
if e.errno in (errno.EACCES, errno.EAGAIN):
# external locks synchronise things like iptables
# updates - give it some time to prevent busy spinning
time.sleep(0.01)
else:
raise threading.ThreadError(_("Unable to acquire lock on"
" `%(filename)s` due to"
" %(exception)s") %
{'filename': self.fname,
'exception': e})
def deprecated(self, msg, *args, **kwargs):
"""Call this method when a deprecated feature is used.
If the system is configured for fatal deprecations then the message
is logged at the 'critical' level and :class:`DeprecatedConfig` will
be raised.
Otherwise, the message will be logged (once) at the 'warn' level.
:raises: :class:`DeprecatedConfig` if the system is configured for
fatal deprecations.
"""
stdmsg = _("Deprecated: %s") % msg
if CONF.fatal_deprecations:
self.critical(stdmsg, *args, **kwargs)
raise DeprecatedConfig(msg=stdmsg)
# Using a list because a tuple with dict can't be stored in a set.
sent_args = self._deprecated_messages_sent.setdefault(msg, list())
if args in sent_args:
# Already logged this message, so don't log it again.
return
sent_args.append(args)
self.warn(stdmsg, *args, **kwargs)
def deprecated(self, msg, *args, **kwargs):
"""Call this method when a deprecated feature is used.
If the system is configured for fatal deprecations then the message
is logged at the 'critical' level and :class:`DeprecatedConfig` will
be raised.
Otherwise, the message will be logged (once) at the 'warn' level.
:raises: :class:`DeprecatedConfig` if the system is configured for
fatal deprecations.
"""
stdmsg = _("Deprecated: %s") % msg
if CONF.fatal_deprecations:
self.critical(stdmsg, *args, **kwargs)
raise DeprecatedConfig(msg=stdmsg)
# Using a list because a tuple with dict can't be stored in a set.
sent_args = self._deprecated_messages_sent.setdefault(msg, list())
if args in sent_args:
# Already logged this message, so don't log it again.
return
sent_args.append(args)
self.warn(stdmsg, *args, **kwargs)
def _wrap(*args, **kw):
try:
return f(*args, **kw)
except Exception as e:
if not isinstance(e, Error):
logging.exception(_('Uncaught exception'))
raise Error(str(e))
raise
class LogConfigError(Exception):
message = _('Error loading logging config %(log_config)s: %(err_msg)s')
def __init__(self, log_config, err_msg):
self.log_config = log_config
self.err_msg = err_msg
def __str__(self):
return self.message % dict(log_config=self.log_config,
err_msg=self.err_msg)
def is_enabled():
cert_file = CONF.ssl.cert_file
key_file = CONF.ssl.key_file
ca_file = CONF.ssl.ca_file
use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if use_ssl and (not cert_file or not key_file):
raise RuntimeError(_("When running server in SSL mode, you must "
"specify both a cert_file and key_file "
"option value in your configuration file"))
return use_ssl
def is_enabled():
cert_file = CONF.ssl.cert_file
key_file = CONF.ssl.key_file
ca_file = CONF.ssl.ca_file
use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if use_ssl and (not cert_file or not key_file):
raise RuntimeError(
_("When running server in SSL mode, you must "
"specify both a cert_file and key_file "
"option value in your configuration file"))
return use_ssl
def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
description=None):
self.exit_code = exit_code
self.stderr = stderr
self.stdout = stdout
self.cmd = cmd
self.description = description
if description is None:
description = _("Unexpected error while running command.")
if exit_code is None:
exit_code = '-'
message = _('%(description)s\n'
'Command: %(cmd)s\n'
'Exit code: %(exit_code)s\n'
'Stdout: %(stdout)r\n'
'Stderr: %(stderr)r') % {'description': description,
'cmd': cmd,
'exit_code': exit_code,
'stdout': stdout,
'stderr': stderr}
super(ProcessExecutionError, self).__init__(message)
def ssh_execute(ssh,
cmd,
process_input=None,
addl_env=None,
check_exit_code=True):
sanitized_cmd = strutils.mask_password(cmd)
LOG.debug('Running cmd (SSH): %s', sanitized_cmd)
if addl_env:
raise InvalidArgumentError(_('Environment not supported over SSH'))
if process_input:
# This is (probably) fixable if we need it...
raise InvalidArgumentError(_('process_input not supported over SSH'))
stdin_stream, stdout_stream, stderr_stream = ssh.exec_command(cmd)
channel = stdout_stream.channel
# NOTE(justinsb): This seems suspicious...
# ...other SSH clients have buffering issues with this approach
stdout = stdout_stream.read()
sanitized_stdout = strutils.mask_password(stdout)
stderr = stderr_stream.read()
sanitized_stderr = strutils.mask_password(stderr)
stdin_stream.close()
exit_status = channel.recv_exit_status()
# exit_status == -1 if no exit code was returned
if exit_status != -1:
LOG.debug('Result was %s' % exit_status)
if check_exit_code and exit_status != 0:
raise ProcessExecutionError(exit_code=exit_status,
stdout=sanitized_stdout,
stderr=sanitized_stderr,
cmd=sanitized_cmd)
return (sanitized_stdout, sanitized_stderr)
def set_rules(self, rules, overwrite=True, use_conf=False):
"""Create a new Rules object based on the provided dict of rules.
:param rules: New rules to use. It should be an instance of dict.
:param overwrite: Whether to overwrite current rules or update them
with the new rules.
:param use_conf: Whether to reload rules from cache or config file.
"""
if not isinstance(rules, dict):
raise TypeError(
_("Rules must be an instance of dict or Rules, "
"got %s instead") % type(rules))
self.use_conf = use_conf
if overwrite:
self.rules = Rules(rules, self.default_rule)
else:
self.rules.update(rules)
def _find_facility_from_conf():
facility_names = logging.handlers.SysLogHandler.facility_names
facility = getattr(logging.handlers.SysLogHandler,
CONF.syslog_log_facility,
None)
if facility is None and CONF.syslog_log_facility in facility_names:
facility = facility_names.get(CONF.syslog_log_facility)
if facility is None:
valid_facilities = facility_names.keys()
consts = ['LOG_AUTH', 'LOG_AUTHPRIV', 'LOG_CRON', 'LOG_DAEMON',
'LOG_FTP', 'LOG_KERN', 'LOG_LPR', 'LOG_MAIL', 'LOG_NEWS',
'LOG_AUTH', 'LOG_SYSLOG', 'LOG_USER', 'LOG_UUCP',
'LOG_LOCAL0', 'LOG_LOCAL1', 'LOG_LOCAL2', 'LOG_LOCAL3',
'LOG_LOCAL4', 'LOG_LOCAL5', 'LOG_LOCAL6', 'LOG_LOCAL7']
valid_facilities.extend(consts)
raise TypeError(_('syslog facility must be one of: %s') %
', '.join("'%s'" % fac
for fac in valid_facilities))
return facility
def _find_facility_from_conf():
facility_names = logging.handlers.SysLogHandler.facility_names
facility = getattr(logging.handlers.SysLogHandler,
CONF.syslog_log_facility, None)
if facility is None and CONF.syslog_log_facility in facility_names:
facility = facility_names.get(CONF.syslog_log_facility)
if facility is None:
valid_facilities = facility_names.keys()
consts = [
'LOG_AUTH', 'LOG_AUTHPRIV', 'LOG_CRON', 'LOG_DAEMON', 'LOG_FTP',
'LOG_KERN', 'LOG_LPR', 'LOG_MAIL', 'LOG_NEWS', 'LOG_AUTH',
'LOG_SYSLOG', 'LOG_USER', 'LOG_UUCP', 'LOG_LOCAL0', 'LOG_LOCAL1',
'LOG_LOCAL2', 'LOG_LOCAL3', 'LOG_LOCAL4', 'LOG_LOCAL5',
'LOG_LOCAL6', 'LOG_LOCAL7'
]
valid_facilities.extend(consts)
raise TypeError(
_('syslog facility must be one of: %s') %
', '.join("'%s'" % fac for fac in valid_facilities))
return facility
def execute(*cmd, **kwargs):
"""Helper method to shell out and execute a command through subprocess.
Allows optional retry.
:param cmd: Passed to subprocess.Popen.
:type cmd: string
:param process_input: Send to opened process.
:type process_input: string
:param env_variables: Environment variables and their values that
will be set for the process.
:type env_variables: dict
:param check_exit_code: Single bool, int, or list of allowed exit
codes. Defaults to [0]. Raise
:class:`ProcessExecutionError` unless
program exits with one of these code.
:type check_exit_code: boolean, int, or [int]
:param delay_on_retry: True | False. Defaults to True. If set to True,
wait a short amount of time before retrying.
:type delay_on_retry: boolean
:param attempts: How many times to retry cmd.
:type attempts: int
:param run_as_root: True | False. Defaults to False. If set to True,
the command is prefixed by the command specified
in the root_helper kwarg.
:type run_as_root: boolean
:param root_helper: command to prefix to commands called with
run_as_root=True
:type root_helper: string
:param shell: whether or not there should be a shell used to
execute this command. Defaults to false.
:type shell: boolean
:param loglevel: log level for execute commands.
:type loglevel: int. (Should be logging.DEBUG or logging.INFO)
:returns: (stdout, stderr) from process execution
:raises: :class:`UnknownArgumentError` on
receiving unknown arguments
:raises: :class:`ProcessExecutionError`
"""
process_input = kwargs.pop('process_input', None)
env_variables = kwargs.pop('env_variables', None)
check_exit_code = kwargs.pop('check_exit_code', [0])
ignore_exit_code = False
delay_on_retry = kwargs.pop('delay_on_retry', True)
attempts = kwargs.pop('attempts', 1)
run_as_root = kwargs.pop('run_as_root', False)
root_helper = kwargs.pop('root_helper', '')
shell = kwargs.pop('shell', False)
loglevel = kwargs.pop('loglevel', logging.DEBUG)
if isinstance(check_exit_code, bool):
ignore_exit_code = not check_exit_code
check_exit_code = [0]
elif isinstance(check_exit_code, int):
check_exit_code = [check_exit_code]
if kwargs:
raise UnknownArgumentError(_('Got unknown keyword args: %r') % kwargs)
if run_as_root and hasattr(os, 'geteuid') and os.geteuid() != 0:
if not root_helper:
raise NoRootWrapSpecified(
message=_('Command requested root, but did not '
'specify a root helper.'))
cmd = shlex.split(root_helper) + list(cmd)
cmd = map(str, cmd)
sanitized_cmd = strutils.mask_password(' '.join(cmd))
while attempts > 0:
attempts -= 1
try:
LOG.log(loglevel, _('Running cmd (subprocess): %s'), sanitized_cmd)
_PIPE = subprocess.PIPE # pylint: disable=E1101
if os.name == 'nt':
preexec_fn = None
close_fds = False
else:
preexec_fn = _subprocess_setup
close_fds = True
obj = subprocess.Popen(cmd,
stdin=_PIPE,
stdout=_PIPE,
stderr=_PIPE,
close_fds=close_fds,
preexec_fn=preexec_fn,
shell=shell,
env=env_variables)
result = None
for _i in six.moves.range(20):
# NOTE(russellb) 20 is an arbitrary number of retries to
# prevent any chance of looping forever here.
try:
if process_input is not None:
result = obj.communicate(process_input)
else:
result = obj.communicate()
except OSError as e:
if e.errno in (errno.EAGAIN, errno.EINTR):
continue
raise
break
obj.stdin.close() # pylint: disable=E1101
_returncode = obj.returncode # pylint: disable=E1101
LOG.log(loglevel, _('Result was %s'), _returncode)
if not ignore_exit_code and _returncode not in check_exit_code:
(stdout, stderr) = result
sanitized_stdout = strutils.mask_password(stdout)
sanitized_stderr = strutils.mask_password(stderr)
raise ProcessExecutionError(exit_code=_returncode,
stdout=sanitized_stdout,
stderr=sanitized_stderr,
cmd=sanitized_cmd)
return result
except ProcessExecutionError:
if not attempts:
raise
else:
LOG.log(loglevel, _('%r failed. Retrying.'), sanitized_cmd)
if delay_on_retry:
greenthread.sleep(random.randint(20, 200) / 100.0)
finally:
# NOTE(termie): this appears to be necessary to let the subprocess
# call clean something up in between calls, without
# it two execute calls in a row hangs the second one
greenthread.sleep(0)
def validate_ssl_version(version):
key = version.lower()
try:
return _SSL_PROTOCOLS[key]
except KeyError:
raise RuntimeError(_("Invalid SSL version : %s") % version)
def validate_ssl_version(version):
key = version.lower()
try:
return _SSL_PROTOCOLS[key]
except KeyError:
raise RuntimeError(_("Invalid SSL version : %s") % version)
class DeprecatedConfig(Exception):
message = _("Fatal call to deprecated config: %(msg)s")
def __init__(self, msg):
super(Exception, self).__init__(self.message % dict(msg=msg))
def execute(*cmd, **kwargs):
"""Helper method to shell out and execute a command through subprocess.
Allows optional retry.
:param cmd: Passed to subprocess.Popen.
:type cmd: string
:param process_input: Send to opened process.
:type process_input: string
:param env_variables: Environment variables and their values that
will be set for the process.
:type env_variables: dict
:param check_exit_code: Single bool, int, or list of allowed exit
codes. Defaults to [0]. Raise
:class:`ProcessExecutionError` unless
program exits with one of these code.
:type check_exit_code: boolean, int, or [int]
:param delay_on_retry: True | False. Defaults to True. If set to True,
wait a short amount of time before retrying.
:type delay_on_retry: boolean
:param attempts: How many times to retry cmd.
:type attempts: int
:param run_as_root: True | False. Defaults to False. If set to True,
the command is prefixed by the command specified
in the root_helper kwarg.
:type run_as_root: boolean
:param root_helper: command to prefix to commands called with
run_as_root=True
:type root_helper: string
:param shell: whether or not there should be a shell used to
execute this command. Defaults to false.
:type shell: boolean
:param loglevel: log level for execute commands.
:type loglevel: int. (Should be logging.DEBUG or logging.INFO)
:returns: (stdout, stderr) from process execution
:raises: :class:`UnknownArgumentError` on
receiving unknown arguments
:raises: :class:`ProcessExecutionError`
"""
process_input = kwargs.pop('process_input', None)
env_variables = kwargs.pop('env_variables', None)
check_exit_code = kwargs.pop('check_exit_code', [0])
ignore_exit_code = False
delay_on_retry = kwargs.pop('delay_on_retry', True)
attempts = kwargs.pop('attempts', 1)
run_as_root = kwargs.pop('run_as_root', False)
root_helper = kwargs.pop('root_helper', '')
shell = kwargs.pop('shell', False)
loglevel = kwargs.pop('loglevel', logging.DEBUG)
if isinstance(check_exit_code, bool):
ignore_exit_code = not check_exit_code
check_exit_code = [0]
elif isinstance(check_exit_code, int):
check_exit_code = [check_exit_code]
if kwargs:
raise UnknownArgumentError(_('Got unknown keyword args: %r') % kwargs)
if run_as_root and hasattr(os, 'geteuid') and os.geteuid() != 0:
if not root_helper:
raise NoRootWrapSpecified(
message=_('Command requested root, but did not '
'specify a root helper.'))
cmd = shlex.split(root_helper) + list(cmd)
cmd = map(str, cmd)
sanitized_cmd = strutils.mask_password(' '.join(cmd))
while attempts > 0:
attempts -= 1
try:
LOG.log(loglevel, _('Running cmd (subprocess): %s'), sanitized_cmd)
_PIPE = subprocess.PIPE # pylint: disable=E1101
if os.name == 'nt':
preexec_fn = None
close_fds = False
else:
preexec_fn = _subprocess_setup
close_fds = True
obj = subprocess.Popen(cmd,
stdin=_PIPE,
stdout=_PIPE,
stderr=_PIPE,
close_fds=close_fds,
preexec_fn=preexec_fn,
shell=shell,
env=env_variables)
result = None
for _i in six.moves.range(20):
# NOTE(russellb) 20 is an arbitrary number of retries to
# prevent any chance of looping forever here.
try:
if process_input is not None:
result = obj.communicate(process_input)
else:
result = obj.communicate()
except OSError as e:
if e.errno in (errno.EAGAIN, errno.EINTR):
continue
raise
break
obj.stdin.close() # pylint: disable=E1101
_returncode = obj.returncode # pylint: disable=E1101
LOG.log(loglevel, 'Result was %s' % _returncode)
if not ignore_exit_code and _returncode not in check_exit_code:
(stdout, stderr) = result
sanitized_stdout = strutils.mask_password(stdout)
sanitized_stderr = strutils.mask_password(stderr)
raise ProcessExecutionError(exit_code=_returncode,
stdout=sanitized_stdout,
stderr=sanitized_stderr,
cmd=sanitized_cmd)
return result
except ProcessExecutionError:
if not attempts:
raise
else:
LOG.log(loglevel, _('%r failed. Retrying.'), sanitized_cmd)
if delay_on_retry:
greenthread.sleep(random.randint(20, 200) / 100.0)
finally:
# NOTE(termie): this appears to be necessary to let the subprocess
# call clean something up in between calls, without
# it two execute calls in a row hangs the second one
greenthread.sleep(0)
import re
from oslo.config import cfg
from oslo.serialization import jsonutils
import six
import six.moves.urllib.parse as urlparse
import six.moves.urllib.request as urlrequest
from murano.openstack.common import fileutils
from murano.openstack.common._i18n import _, _LE, _LI
from murano.openstack.common import log as logging
policy_opts = [
cfg.StrOpt('policy_file',
default='policy.json',
help=_('The JSON file that defines policies.')),
cfg.StrOpt('policy_default_rule',
default='default',
help=_('Default rule. Enforced when a requested rule is not '
'found.')),
cfg.MultiStrOpt('policy_dirs',
default=['policy.d'],
help=_('Directories where policy configuration files are '
'stored. They can be relative to any directory '
'in the search path defined by the config_dir '
'option, or absolute paths. The file defined by '
'policy_file must exist for these directories to '
'be searched.')),
]
CONF = cfg.CONF
def __init__(self, rule):
msg = _("Policy doesn't allow %s to be performed.") % rule
super(PolicyNotAuthorized, self).__init__(msg)
