diff options
| -rw-r--r-- | python/vyos/airbag.py | 170 | ||||
| -rw-r--r-- | python/vyos/util.py | 6 |
2 files changed, 176 insertions, 0 deletions
diff --git a/python/vyos/airbag.py b/python/vyos/airbag.py new file mode 100644 index 000000000..47d3dcb43 --- /dev/null +++ b/python/vyos/airbag.py @@ -0,0 +1,170 @@ +# Copyright 2019-2020 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library 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 +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library. If not, see <http://www.gnu.org/licenses/>. + +import os +import sys +import logging +import logging.handlers +from datetime import datetime + +from vyos.config import Config +from vyos.version import get_version +from vyos.util import run +from vyos.util import debug + + +# during the session, system-versions-foot is called to generate +# the config footer, the code currently use stdout, so to do not +# get a copy of that, we allow to disable the extra logging +DISABLE = False + + +# emulate a file object +class _IO(object): + def __init__(self, std, log): + self.std = std + self.log = log + + def write(self, message): + self.std.write(message) + if DISABLE: + return + for line in message.split('\n'): + s = line.rstrip() + if s: + self.log(s) + + def flush(self): + self.std.flush() + + def close(self): + pass + + +# The function which will be used to report information +# to users when an exception is unhandled +def bug_report(dtype, value, trace): + from traceback import format_exception + + sys.stdout.flush() + sys.stderr.flush() + + information = { + 'date': datetime.now().strftime('%Y-%m-%d %H:%M:%S'), + 'version': get_version(), + 'trace': format_exception(dtype, value, trace), + 'instructions': COMMUNITY if 'rolling' in get_version() else SUPPORTED, + } + + sys.stdout.write(INTRO.format(**information)) + sys.stdout.flush() + + sys.stderr.write(FAULT.format(**information)) + sys.stderr.flush() + + +# define an exception handler to be run when an exception +# reach the end of __main__ and was not intercepted +def intercepter(dtype, value, trace): + bug_report(dtype, value, trace) + if debug('developer') not in [None, '0', '']: + import pdb + pdb.pm() + + +def InterceptingLogger(address, _singleton=[False]): + skip = _singleton.pop() + _singleton.append(True) + if skip: + return + + logger = logging.getLogger('VyOS') + logger.setLevel(logging.DEBUG) + handler = logging.handlers.SysLogHandler(address='/dev/log', facility='syslog') + logger.addHandler(handler) + + # log to syslog any message sent to stderr + sys.stderr = _IO(sys.stderr, logger.critical) + + +# lists as default arguments in function is normally dangerous +# as they will keep any modification performed, unless this is +# what you want to do (in that case to only run the code once) +def InterceptingException(excepthook,_singleton=[False]): + skip = _singleton.pop() + _singleton.append(True) + if skip: + return + + # install the handler to replace the default behaviour + # which just prints the exception trace on screen + sys.excepthook = excepthook + + +# Do not attempt the extra logging for operational commands +try: + # This fails during boot + insession = Config().in_session() +except: + # we save info on boot to help debugging + insession = True + + +# Installing the interception, it currently does not work when +# running testing so we are checking that we are on the router +# as otherwise it prevents dpkg-buildpackage to work +if get_version() and insession: + InterceptingLogger('/run/systemd/journal/dev-log') + InterceptingException(intercepter) + + +# Messages to print + +FAULT = """\ +Date: {date} +VyOS image: {version} + +{trace} +""" + +INTRO = """\ +VyOS had an issue completing a command. + +We are sorry that you encountered a problem with VyOS. +There are a few things you can do to help us (and yourself): +{instructions} + +PLEASE, when reporting, do include as much information as you can: +- do not obfuscate any data (feel free to send us a private communication with + the extra information if your business policy is strict on information sharing) +- and include all the information presented below + +""" + +COMMUNITY = """\ +- Make sure you are running the latest version of the code available at + https://downloads.vyos.io/rolling/current/amd64/vyos-rolling-latest.iso +- Consult the forum to see how to handle this issue + https://forum.vyos.io +- Join our community on slack where our users exchange help and advice + https://vyos.slack.com +""".strip() + +SUPPORTED = """\ +- Make sure you are running the latest stable version of VyOS + the code is available at https://downloads.vyos.io/?dir=release/current +- Contact us on our online help desk + https://support.vyos.io/ +""".strip() diff --git a/python/vyos/util.py b/python/vyos/util.py index 16cfae92d..e61de52bd 100644 --- a/python/vyos/util.py +++ b/python/vyos/util.py @@ -19,6 +19,12 @@ import sys from subprocess import Popen, PIPE, STDOUT, DEVNULL def debug(flag): + # this is to force all new flags to be registered here so that + # they can be documented: + # - developer: the code will drop into PBD on un-handled exception + # - ifconfig: prints command and sysfs access on stdout for interface + if flag not in ['developer', 'ifconfig']: + return False return flag if os.path.isfile(f'/tmp/vyos.{flag}.debug') else '' |