Current File : //usr/share/doc/sudo/examples/example_debugging.py
import sudo
import logging
class DebugDemoPlugin(sudo.Plugin):
"""
An example sudo plugin demonstrating the debugging capabilities.
You can install it as an extra IO plugin for example by adding the
following line to sudo.conf:
Plugin python_io python_plugin.so \
ModulePath=<path>/example_debugging.py \
ClassName=DebugDemoPlugin
To see the plugin's debug output, use the following line in sudo.conf:
Debug python_plugin.so \
/var/log/sudo_python_debug plugin@trace,c_calls@trace
^ ^-- the options for the logging
^----- the output will be placed here
The options for the logging is in format of multiple "subsystem@level"
separated by commas (",").
The most interesting subsystems are:
plugin Shows each call of sudo.debug API in the log
- py_calls Logs whenever a C function calls into the python module.
(For example calling this __init__ function.)
c_calls Logs whenever python calls into a C sudo API function
You can also specify "all" as subsystem name to get the debug messages of
all subsystems.
Other subsystems available:
internal logs internal functions of the python language wrapper
sudo_cb logs when sudo calls into its plugin API
load logs python plugin loading / unloading
Log levels
crit sudo.DEBUG.CRIT --> only critical messages
err sudo.DEBUG.ERROR
warn sudo.DEBUG.WARN
notice sudo.DEBUG.NOTICE
diag sudo.DEBUG.DIAG
info sudo.DEBUG.INFO
trace sudo.DEBUG.TRACE
debug sudo.DEBUG.DEBUG --> very extreme verbose debugging
See the sudo.conf manual for more details ("man sudo.conf").
"""
def __init__(self, plugin_options, **kwargs):
# Specify: "py_calls@info" debug option to show the call to this
# constructor and the arguments passed in
# Specifying "plugin@err" debug option will show this message
# (or any more verbose level)
sudo.debug(sudo.DEBUG.ERROR, "My demo purpose plugin shows "
"this ERROR level debug message")
# Specifying "plugin@info" debug option will show this message
# (or any more verbose level)
sudo.debug(sudo.DEBUG.INFO, "My demo purpose plugin shows "
"this INFO level debug message")
# You can also use python log system, because sudo sets its log handler
# on the root logger.
# Note that the level of python logging is separate than the one set in
# sudo.conf. If using the python logger, each will have effect.
logger = logging.getLogger()
logger.setLevel(logging.INFO)
logger.error("Python log system shows this ERROR level debug message")
logger.info("Python log system shows this INFO level debug message")
# If you raise the level to info or below, the call of the debug
# will also be logged.
# An example output you will see in the debug log file:
# Dec 5 15:19:19 sudo[123040] __init__ @ /.../example_debugging.py:54 debugs:
# Dec 5 15:19:19 sudo[123040] My demo purpose plugin shows this ERROR level debug message
# Specify: "c_calls@diag" debug option to show this call and its
# arguments. If you specify info debug level instead ("c_calls@info"),
# you will also see the python function and line from which you called
# the 'options_as_dict' function.
self.plugin_options = sudo.options_as_dict(plugin_options)
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