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# -*- coding: utf-8 -*- |
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# |
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# This file is part of Glances. |
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# |
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# Copyright (C) 2016 Nicolargo <[email protected]> |
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# |
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# Glances is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU Lesser General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Glances is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Lesser General Public License for more details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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"""IP plugin.""" |
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import threading |
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from json import loads |
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from glances.compat import iterkeys, urlopen, URLError, queue |
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from glances.globals import BSD |
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from glances.logger import logger |
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from glances.timer import Timer |
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from glances.plugins.glances_plugin import GlancesPlugin |
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# XXX *BSDs: Segmentation fault (core dumped) |
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# -- https://bitbucket.org/al45tair/netifaces/issues/15 |
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# Also used in the ports_list script |
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if not BSD: |
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try: |
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import netifaces |
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netifaces_tag = True |
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except ImportError: |
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netifaces_tag = False |
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else: |
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netifaces_tag = False |
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# List of online services to retreive public IP address |
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# List of tuple (url, json, key) |
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# - url: URL of the Web site |
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# - json: service return a JSON (True) or string (False) |
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# - key: key of the IP addresse in the JSON structure |
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urls = [('http://ip.42.pl/raw', False, None), |
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('http://httpbin.org/ip', True, 'origin'), |
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('http://jsonip.com', True, 'ip'), |
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('https://api.ipify.org/?format=json', True, 'ip')] |
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class Plugin(GlancesPlugin): |
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"""Glances IP Plugin. |
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stats is a dict |
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""" |
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def __init__(self, args=None): |
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"""Init the plugin.""" |
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super(Plugin, self).__init__(args=args) |
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# We want to display the stat in the curse interface |
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self.display_curse = True |
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# Get the public IP address once |
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self.public_address = PublicIpAddress().get() |
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# Init the stats |
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self.reset() |
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def reset(self): |
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"""Reset/init the stats.""" |
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self.stats = {} |
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@GlancesPlugin._log_result_decorator |
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def update(self): |
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"""Update IP stats using the input method. |
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Stats is dict |
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""" |
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# Reset stats |
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self.reset() |
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if self.input_method == 'local' and netifaces_tag: |
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# Update stats using the netifaces lib |
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try: |
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default_gw = netifaces.gateways()['default'][netifaces.AF_INET] |
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except (KeyError, AttributeError) as e: |
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logger.debug("Cannot grab the default gateway ({})".format(e)) |
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else: |
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try: |
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self.stats['address'] = netifaces.ifaddresses(default_gw[1])[netifaces.AF_INET][0]['addr'] |
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self.stats['mask'] = netifaces.ifaddresses(default_gw[1])[netifaces.AF_INET][0]['netmask'] |
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self.stats['mask_cidr'] = self.ip_to_cidr(self.stats['mask']) |
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self.stats['gateway'] = netifaces.gateways()['default'][netifaces.AF_INET][0] |
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# !!! SHOULD be done once, not on each refresh |
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self.stats['public_address'] = self.public_address |
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except (KeyError, AttributeError) as e: |
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logger.debug("Cannot grab IP information: {}".format(e)) |
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elif self.input_method == 'snmp': |
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# Not implemented yet |
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pass |
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# Update the view |
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self.update_views() |
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return self.stats |
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def update_views(self): |
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"""Update stats views.""" |
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# Call the father's method |
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super(Plugin, self).update_views() |
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# Add specifics informations |
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# Optional |
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for key in iterkeys(self.stats): |
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self.views[key]['optional'] = True |
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def msg_curse(self, args=None): |
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"""Return the dict to display in the curse interface.""" |
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# Init the return message |
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ret = [] |
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# Only process if stats exist and display plugin enable... |
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if not self.stats or args.disable_ip: |
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return ret |
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# Build the string message |
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msg = ' - ' |
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ret.append(self.curse_add_line(msg)) |
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msg = 'IP ' |
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ret.append(self.curse_add_line(msg, 'TITLE')) |
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msg = '{}'.format(self.stats['address']) |
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ret.append(self.curse_add_line(msg)) |
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if 'mask_cidr' in self.stats: |
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# VPN with no internet access (issue #842) |
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msg = '/{}'.format(self.stats['mask_cidr']) |
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ret.append(self.curse_add_line(msg)) |
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try: |
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msg_pub = '{}'.format(self.stats['public_address']) |
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except UnicodeEncodeError: |
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pass |
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else: |
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if self.stats['public_address'] is not None: |
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msg = ' Pub ' |
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ret.append(self.curse_add_line(msg, 'TITLE')) |
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ret.append(self.curse_add_line(msg_pub)) |
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return ret |
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@staticmethod |
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def ip_to_cidr(ip): |
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"""Convert IP address to CIDR. |
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Example: '255.255.255.0' will return 24 |
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""" |
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return sum([int(x) << 8 for x in ip.split('.')]) // 8128 |
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class PublicIpAddress(object): |
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"""Get public IP address from online services""" |
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def __init__(self, timeout=2): |
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self.timeout = timeout |
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def get(self): |
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"""Get the first public IP address returned by one of the online services""" |
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q = queue.Queue() |
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for u, j, k in urls: |
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t = threading.Thread(target=self._get_ip_public, args=(q, u, j, k)) |
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t.daemon = True |
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t.start() |
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t = Timer(self.timeout) |
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ip = None |
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while not t.finished() and ip is None: |
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if q.qsize() > 0: |
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ip = q.get() |
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return ip |
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def _get_ip_public(self, queue_target, url, json=False, key=None): |
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"""Request the url service and put the result in the queue_target""" |
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try: |
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response = urlopen(url, timeout=self.timeout).read().decode('utf-8') |
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except Exception as e: |
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logger.debug("IP plugin - Can not open URL {0} ({1})".format(url, e)) |
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queue_target.put(None) |
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else: |
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# Request depend on service |
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try: |
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if not json: |
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queue_target.put(response) |
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else: |
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queue_target.put(loads(response)[key]) |
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except ValueError: |
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queue_target.put(None) |
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nicolargo /
glances
