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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2015 Nicolargo <nicolas@nicolargo.com>
#
# Glances 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 3 of the License, or
# (at your option) any later version.
#
# Glances 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 program. If not, see <http://www.gnu.org/licenses/>.
"""IP plugin."""
from glances.compat import iterkeys
from glances.globals import is_bsd
from glances.logger import logger
from glances.plugins.glances_plugin import GlancesPlugin
# XXX *BSDs: Segmentation fault (core dumped)
# -- https://bitbucket.org/al45tair/netifaces/issues/15
if not is_bsd:
try:
import netifaces
netifaces_tag = True
except ImportError:
netifaces_tag = False
else:
netifaces_tag = False
class Plugin(GlancesPlugin):
"""Glances IP Plugin.
stats is a dict
"""
def __init__(self, args=None):
"""Init the plugin."""
super(Plugin, self).__init__(args=args)
# We want to display the stat in the curse interface
self.display_curse = True
# Init the stats
self.reset()
def reset(self):
"""Reset/init the stats."""
self.stats = {}
@GlancesPlugin._log_result_decorator
def update(self):
"""Update IP stats using the input method.
Stats is dict
"""
# Reset stats
self.reset()
if self.input_method == 'local' and netifaces_tag:
# Update stats using the netifaces lib
try:
default_gw = netifaces.gateways()['default'][netifaces.AF_INET]
except (KeyError, AttributeError) as e:
logger.debug("Cannot grab the default gateway ({0})".format(e))
else:
try:
self.stats['address'] = netifaces.ifaddresses(default_gw[1])[netifaces.AF_INET][0]['addr']
self.stats['mask'] = netifaces.ifaddresses(default_gw[1])[netifaces.AF_INET][0]['netmask']
self.stats['mask_cidr'] = self.ip_to_cidr(self.stats['mask'])
self.stats['gateway'] = netifaces.gateways()['default'][netifaces.AF_INET][0]
except (KeyError, AttributeError) as e:
logger.debug("Cannot grab IP information: {0}".format(e))
elif self.input_method == 'snmp':
# Not implemented yet
pass
# Update the view
self.update_views()
return self.stats
def update_views(self):
"""Update stats views."""
# Call the father's method
super(Plugin, self).update_views()
# Add specifics informations
# Optional
for key in iterkeys(self.stats):
self.views[key]['optional'] = True
def msg_curse(self, args=None):
"""Return the dict to display in the curse interface."""
# Init the return message
ret = []
# Only process if stats exist and display plugin enable...
if not self.stats or args.disable_ip:
return ret
# Build the string message
msg = ' - '
ret.append(self.curse_add_line(msg))
msg = 'IP '
ret.append(self.curse_add_line(msg, 'TITLE'))
msg = '{0:}/{1}'.format(self.stats['address'], self.stats['mask_cidr'])
ret.append(self.curse_add_line(msg))
return ret
@staticmethod
def ip_to_cidr(ip):
"""Convert IP address to CIDR.
Example: '255.255.255.0' will return 24
"""
return sum([int(x) << 8 for x in ip.split('.')]) // 8128
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