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authorThomas Mangin <thomas.mangin@exa.net.uk>2020-04-14 09:49:08 +0100
committerThomas Mangin <thomas.mangin@exa.net.uk>2020-04-14 12:04:43 +0100
commit9eb979664c29a6e34b765df3e38cdf6d4c718be1 (patch)
treedd09fc7e8bc6627539e25d365e2d093a1bd94af2 /src
parente0aa8aa20b835f17a74e0cf2a0dc2ca6e7823a3c (diff)
downloadvyos-1x-9eb979664c29a6e34b765df3e38cdf6d4c718be1.tar.gz
vyos-1x-9eb979664c29a6e34b765df3e38cdf6d4c718be1.zip
op_mode: T2223 python version of show_interfaces
Diffstat (limited to 'src')
-rwxr-xr-xsrc/op_mode/show_interfaces.py266
1 files changed, 266 insertions, 0 deletions
diff --git a/src/op_mode/show_interfaces.py b/src/op_mode/show_interfaces.py
new file mode 100755
index 000000000..c5d4c8ac6
--- /dev/null
+++ b/src/op_mode/show_interfaces.py
@@ -0,0 +1,266 @@
+#!/usr/bin/env python3
+
+# Copyright 2017, 2019 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 re
+import sys
+import datetime
+import argparse
+from subprocess import Popen, PIPE, STDOUT
+import netifaces
+
+from vyos.ifconfig import Section
+from vyos.ifconfig import Interface
+from vyos.ifconfig import VRRP
+from vyos.util import cmd
+
+
+# interfaces = Sections.reserved()
+interfaces = ['eno', 'ens', 'enp', 'enx', 'eth', 'vmnet', 'lo', 'tun', 'wan', 'pppoe', 'pppoa', 'adsl']
+glob_ifnames = '/sys/class/net/({})*'.format('|'.join(interfaces))
+
+
+actions = {}
+def register (name):
+ """
+ decorator to register a function into actions with a name
+ it allows to use actions[name] to call the registered function
+ """
+ def _register(function):
+ actions[name] = function
+ return function
+ return _register
+
+
+def filtered_interfaces(ifnames, iftypes, vif, vrrp):
+ """
+ get all the interfaces from the OS and returns them
+ ifnames can be used to filter which interfaces should be considered
+
+ ifnames: a list of interfaces names to consider, empty do not filter
+ return an instance of the interface class
+ """
+ allnames = Section.interfaces()
+ allnames.sort()
+
+ vrrp_interfaces = VRRP.active_interfaces() if vrrp else []
+
+ for ifname in allnames:
+ if ifnames and ifname not in ifnames:
+ continue
+
+ # return the class which can handle this interface name
+ klass = Section.klass(ifname)
+ # connect to the interface
+ interface = klass(ifname, create=False, debug=False)
+
+ if iftypes and interface.definition['section'] not in iftypes:
+ continue
+
+ if vif and not '.' in ifname:
+ continue
+
+ if vrrp and ifname not in vrrp_interfaces:
+ continue
+
+ yield interface
+
+
+def split_text(text, used=0):
+ """
+ take a string and attempt to split it to fit with the width of the screen
+
+ text: the string to split
+ used: number of characted already used in the screen
+ """
+ returned = Popen('stty size', stdout=PIPE, stderr=STDOUT, shell=True).communicate()[0].strip().split()
+ if len(returned) == 2:
+ rows, columns = [int(_) for _ in returned]
+ else:
+ rows, columns = (40, 80)
+
+ desc_len = columns - used
+
+ line = ''
+ for word in text.split():
+ if len(line) + len(word) >= desc_len:
+ yield f'{line} {word}'[1:]
+ line = ''
+ line = f'{line} {word}'
+ yield line[1:]
+
+
+def get_vrrp_intf():
+ return [intf for intf in Section.interfaces() if intf.is_vrrp()]
+
+
+def get_counter_val(clear, now):
+ """
+ attempt to correct a counter if it wrapped, copied from perl
+
+ clear: previous counter
+ now: the current counter
+ """
+ # This function has to deal with both 32 and 64 bit counters
+ if clear == 0:
+ return now
+
+ # device is using 64 bit values assume they never wrap
+ value = now - clear
+ if (now >> 32) != 0:
+ return value
+
+ # The counter has rolled. If the counter has rolled
+ # multiple times since the clear value, then this math
+ # is meaningless.
+ if (value < 0):
+ value = (4294967296 - clear) + now
+
+ return value
+
+
+@register('help')
+def usage(*args):
+ print(f"Usage: {sys.argv[0]} [intf=NAME|intf-type=TYPE|vif|vrrp] action=ACTION")
+ print(f" NAME = " + ' | '.join(Section.interfaces()))
+ print(f" TYPE = " + ' | '.join(Section.sections()))
+ print(f" ACTION = " + ' | '.join(actions))
+ sys.exit(1)
+
+
+@register('allowed')
+def run_allowed(**kwarg):
+ sys.stdout.write(' '.join(Section.interfaces()))
+
+
+@register('show')
+def run_show_intf(ifnames, iftypes, vif, vrrp):
+ for interface in filtered_interfaces(ifnames, iftypes, vif, vrrp):
+ cache = interface.operational.load_counters()
+
+ out = cmd(f'ip addr show {interface.ifname}')
+ out = re.sub(f'^\d+:\s+','',out)
+ if re.search("link/tunnel6", out):
+ tunnel = cmd(f'ip -6 tun show {interface.ifname}')
+ # tun0: ip/ipv6 remote ::2 local ::1 encaplimit 4 hoplimit 64 tclass inherit flowlabel inherit (flowinfo 0x00000000)
+ tunnel = re.sub('.*encap', 'encap', tunnel)
+ out = re.sub('(\n\s+)(link/tunnel6)', f'\g<1>{tunnel}\g<1>\g<2>', out)
+
+ print(out)
+
+ timestamp = int(cache.get('timestamp', 0))
+ if timestamp:
+ when = interface.operational.strtime(timestamp)
+ print(f' Last clear: {when}')
+
+ description = interface.get_alias()
+ if description:
+ print(f' Description: {description}')
+
+ print()
+ print(interface.operational.formated_stats())
+
+
+@register('show-brief')
+def run_show_intf_brief(ifnames, iftypes, vif, vrrp):
+ format1 = '%-16s %-33s %-4s %s'
+ format2 = '%-16s %s'
+
+ print('Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down')
+ print(format1 % ("Interface", "IP Address", "S/L", "Description"))
+ print(format1 % ("---------", "----------", "---", "-----------"))
+
+ for interface in filtered_interfaces(ifnames, iftypes, vif, vrrp):
+ oper_state = interface.operational.get_state()
+ admin_state = interface.get_admin_state()
+
+ intf = [interface.ifname,]
+ oper = ['u', ] if oper_state in ('up', 'unknown') else ['A', ]
+ admin = ['u', ] if oper_state in ('up', 'unknown') else ['D', ]
+ addrs = [_ for _ in interface.get_addr() if not _.startswith('fe80::')] or ['-', ]
+ # do not ask me why 56, it was the number in the perl code ...
+ descs = list(split_text(interface.get_alias(),56))
+
+ while intf or oper or admin or addrs or descs:
+ i = intf.pop(0) if intf else ''
+ a = addrs.pop(0) if addrs else ''
+ d = descs.pop(0) if descs else ''
+ s = [oper.pop(0)] if oper else []
+ l = [admin.pop(0)] if admin else []
+ if len(a) < 33:
+ print(format1 % (i, a, '/'.join(s+l), d))
+ else:
+ print(format2 % (i, a))
+ print(format1 % ('', '', '/'.join(s+l), d))
+
+
+@register('show-count')
+def run_show_counters(ifnames, iftypes, vif, vrrp):
+ formating = '%-12s %10s %10s %10s %10s'
+ print(formating % ('Interface', 'Rx Packets', 'Rx Bytes', 'Tx Packets', 'Tx Bytes'))
+
+ for interface in filtered_interfaces(ifnames, iftypes, vif, vrrp):
+ oper = interface.operational.get_state()
+
+ if oper not in ('up','unknown'):
+ continue
+
+ stats = interface.operational.get_stats()
+ cache = interface.operational.load_counters()
+ print(formating % (
+ interface.ifname,
+ get_counter_val(cache['rx_packets'], stats['rx_packets']),
+ get_counter_val(cache['rx_bytes'], stats['rx_bytes']),
+ get_counter_val(cache['tx_packets'], stats['tx_packets']),
+ get_counter_val(cache['tx_bytes'], stats['tx_bytes']),
+ ))
+
+
+@register('clear')
+def run_clear_intf(intf, iftypes, vif, vrrp):
+ for interface in filtered_interfaces(ifnames, iftypes, vif, vrrp):
+ print(f'Clearing {interface.ifname}')
+ interface = Interface(ifname, create=False, debug=False)
+ interface.operational.clear_counters()
+
+
+@register('reset')
+def run_reset_intf(intf, iftypes, vif, vrrp):
+ os.remove()
+
+
+if __name__ == '__main__':
+ parser = argparse.ArgumentParser(add_help=False, description='Show interface information')
+ parser.add_argument('--intf', action="store", type=str, default='', help='only show the specified interface(s)')
+ parser.add_argument('--intf-type', action="store", type=str, default='', help='only show the specified interface type')
+ parser.add_argument('--action', action="store", type=str, default='show', help='action to perform')
+ parser.add_argument('--vif', action='store_true', default=False, help="only show vif interfaces")
+ parser.add_argument('--vrrp', action='store_true', default=False, help="only show vrrp interfaces")
+ parser.add_argument('--help', action='store_true', default=False, help="show help")
+
+ args = parser.parse_args()
+
+ def missing(*args):
+ print('Invalid action [{args.action}]')
+ usage()
+
+ actions.get(args.action, missing)(
+ [_ for _ in args.intf.split(' ') if _],
+ [_ for _ in args.intf_type.split(' ') if _],
+ args.vif,
+ args.vrrp
+ )