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authorJohn Estabrook <jestabro@vyos.io>2022-12-22 09:31:40 -0600
committerGitHub <noreply@github.com>2022-12-22 09:31:40 -0600
commit54a1b3552eb294c192850c74d04f8769b0b92bc0 (patch)
treef44481f6bd36bcf4f4acfe9a76c43a4ef2718dde /src
parent65b104d6e0608e229aa36d948fabddaf3f4a0a8b (diff)
parente4bf3d409d1a8721186810a2dc1871d58501ec8e (diff)
downloadvyos-1x-54a1b3552eb294c192850c74d04f8769b0b92bc0.tar.gz
vyos-1x-54a1b3552eb294c192850c74d04f8769b0b92bc0.zip
Merge pull request #1720 from jestabro/op-mode-interfaces
T4866: rewrite show_interfaces.py show* functions to standardized op-mode
Diffstat (limited to 'src')
-rwxr-xr-xsrc/op_mode/interfaces.py412
1 files changed, 412 insertions, 0 deletions
diff --git a/src/op_mode/interfaces.py b/src/op_mode/interfaces.py
new file mode 100755
index 000000000..678c74980
--- /dev/null
+++ b/src/op_mode/interfaces.py
@@ -0,0 +1,412 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import re
+import sys
+import glob
+import json
+import typing
+from datetime import datetime
+from tabulate import tabulate
+
+import vyos.opmode
+from vyos.ifconfig import Section
+from vyos.ifconfig import Interface
+from vyos.ifconfig import VRRP
+from vyos.util import cmd, rc_cmd, call
+
+def catch_broken_pipe(func):
+ def wrapped(*args, **kwargs):
+ try:
+ func(*args, **kwargs)
+ except (BrokenPipeError, KeyboardInterrupt):
+ # Flush output to /dev/null and bail out.
+ os.dup2(os.open(os.devnull, os.O_WRONLY), sys.stdout.fileno())
+ return wrapped
+
+# The original implementation of filtered_interfaces has signature:
+# (ifnames: list, iftypes: typing.Union[str, list], vif: bool, vrrp: bool) -> intf: Interface:
+# Arg types allowed in CLI (ifnames: str, iftypes: str) were manually
+# re-typed from argparse args.
+# We include the function in a general form, however op-mode standard
+# functions will restrict to the CLI-allowed arg types, wrapped in Optional.
+def filtered_interfaces(ifnames: typing.Union[str, list],
+ iftypes: typing.Union[str, list],
+ vif: bool, vrrp: bool) -> Interface:
+ """
+ get all interfaces from the OS and return them; ifnames can be used to
+ filter which interfaces should be considered
+
+ ifnames: a list of interface names to consider, empty do not filter
+
+ return an instance of the Interface class
+ """
+ if isinstance(ifnames, str):
+ ifnames = [ifnames] if ifnames else []
+ if isinstance(iftypes, list):
+ for iftype in iftypes:
+ yield from filtered_interfaces(ifnames, iftype, vif, vrrp)
+
+ for ifname in Section.interfaces(iftypes):
+ # Bail out early if interface name not part of our search list
+ if ifnames and ifname not in ifnames:
+ continue
+
+ # As we are only "reading" from the interface - we must use the
+ # generic base class which exposes all the data via a common API
+ interface = Interface(ifname, create=False, debug=False)
+
+ # VLAN interfaces have a '.' in their name by convention
+ if vif and not '.' in ifname:
+ continue
+
+ if vrrp:
+ vrrp_interfaces = VRRP.active_interfaces()
+ if 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
+ """
+ no_tty = call('tty -s')
+
+ returned = cmd('stty size') if not no_tty else ''
+ returned = returned.split()
+ if len(returned) == 2:
+ _, columns = tuple(int(_) for _ in returned)
+ else:
+ _, columns = (40, 80)
+
+ desc_len = columns - used
+
+ line = ''
+ for word in text.split():
+ if len(line) + len(word) < desc_len:
+ line = f'{line} {word}'
+ continue
+ if line:
+ yield line[1:]
+ else:
+ line = f'{line} {word}'
+
+ yield line[1:]
+
+def _get_counter_val(prev, now):
+ """
+ attempt to correct a counter if it wrapped, copied from perl
+
+ prev: previous counter
+ now: the current counter
+ """
+ # This function has to deal with both 32 and 64 bit counters
+ if prev == 0:
+ return now
+
+ # device is using 64 bit values assume they never wrap
+ value = now - prev
+ if (now >> 32) != 0:
+ return value
+
+ # The counter has rolled. If the counter has rolled
+ # multiple times since the prev value, then this math
+ # is meaningless.
+ if value < 0:
+ value = (4294967296 - prev) + now
+
+ return value
+
+def _pppoe(ifname):
+ out = cmd('ps -C pppd -f')
+ if ifname in out:
+ return 'C'
+ if ifname in [_.split('/')[-1] for _ in glob.glob('/etc/ppp/peers/pppoe*')]:
+ return 'D'
+ return ''
+
+def _find_intf_by_ifname(intf_l: list, name: str):
+ for d in intf_l:
+ if d['ifname'] == name:
+ return d
+ return {}
+
+# lifted out of operational.py to separate formatting from data
+def _format_stats(stats, indent=4):
+ stat_names = {
+ 'rx': ['bytes', 'packets', 'errors', 'dropped', 'overrun', 'mcast'],
+ 'tx': ['bytes', 'packets', 'errors', 'dropped', 'carrier', 'collisions'],
+ }
+
+ stats_dir = {
+ 'rx': ['rx_bytes', 'rx_packets', 'rx_errors', 'rx_dropped', 'rx_over_errors', 'multicast'],
+ 'tx': ['tx_bytes', 'tx_packets', 'tx_errors', 'tx_dropped', 'tx_carrier_errors', 'collisions'],
+ }
+ tabs = []
+ for rtx in list(stats_dir):
+ tabs.append([f'{rtx.upper()}:', ] + stat_names[rtx])
+ tabs.append(['', ] + [stats[_] for _ in stats_dir[rtx]])
+
+ s = tabulate(
+ tabs,
+ stralign="right",
+ numalign="right",
+ tablefmt="plain"
+ )
+
+ p = ' '*indent
+ return f'{p}' + s.replace('\n', f'\n{p}')
+
+def _get_raw_data(ifname: typing.Optional[str],
+ iftype: typing.Optional[str],
+ vif: bool, vrrp: bool) -> list:
+ if ifname is None:
+ ifname = ''
+ if iftype is None:
+ iftype = ''
+ ret =[]
+ for interface in filtered_interfaces(ifname, iftype, vif, vrrp):
+ res_intf = {}
+ cache = interface.operational.load_counters()
+
+ out = cmd(f'ip -json addr show {interface.ifname}')
+ res_intf_l = json.loads(out)
+ res_intf = res_intf_l[0]
+
+ if res_intf['link_type'] == 'tunnel6':
+ # Note that 'ip -6 tun show {interface.ifname}' is not json
+ # aware, so find in list
+ out = cmd('ip -json -6 tun show')
+ tunnel = json.loads(out)
+ res_intf['tunnel6'] = _find_intf_by_ifname(tunnel,
+ interface.ifname)
+ if 'ip6_tnl_f_use_orig_tclass' in res_intf['tunnel6']:
+ res_intf['tunnel6']['tclass'] = 'inherit'
+ del res_intf['tunnel6']['ip6_tnl_f_use_orig_tclass']
+
+ res_intf['counters_last_clear'] = int(cache.get('timestamp', 0))
+
+ res_intf['description'] = interface.get_alias()
+
+ res_intf['stats'] = interface.operational.get_stats()
+
+ ret.append(res_intf)
+
+ # find pppoe interfaces that are in a transitional/dead state
+ if ifname.startswith('pppoe') and not _find_intf_by_ifname(ret, ifname):
+ pppoe_intf = {}
+ pppoe_intf['unhandled'] = None
+ pppoe_intf['ifname'] = ifname
+ pppoe_intf['state'] = _pppoe(ifname)
+ ret.append(pppoe_intf)
+
+ return ret
+
+def _get_summary_data(ifname: typing.Optional[str],
+ iftype: typing.Optional[str],
+ vif: bool, vrrp: bool) -> list:
+ if ifname is None:
+ ifname = ''
+ if iftype is None:
+ iftype = ''
+ ret = []
+ for interface in filtered_interfaces(ifname, iftype, vif, vrrp):
+ res_intf = {}
+
+ res_intf['ifname'] = interface.ifname
+ res_intf['oper_state'] = interface.operational.get_state()
+ res_intf['admin_state'] = interface.get_admin_state()
+ res_intf['addr'] = [_ for _ in interface.get_addr() if not _.startswith('fe80::')]
+ res_intf['description'] = interface.get_alias()
+
+ ret.append(res_intf)
+
+ # find pppoe interfaces that are in a transitional/dead state
+ if ifname.startswith('pppoe') and not _find_intf_by_ifname(ret, ifname):
+ pppoe_intf = {}
+ pppoe_intf['unhandled'] = None
+ pppoe_intf['ifname'] = ifname
+ pppoe_intf['state'] = _pppoe(ifname)
+ ret.append(pppoe_intf)
+
+ return ret
+
+def _get_counter_data(ifname: typing.Optional[str],
+ iftype: typing.Optional[str],
+ vif: bool, vrrp: bool) -> list:
+ if ifname is None:
+ ifname = ''
+ if iftype is None:
+ iftype = ''
+ ret = []
+ for interface in filtered_interfaces(ifname, iftype, vif, vrrp):
+ res_intf = {}
+
+ oper = interface.operational.get_state()
+
+ if oper not in ('up','unknown'):
+ continue
+
+ stats = interface.operational.get_stats()
+ cache = interface.operational.load_counters()
+ res_intf['ifname'] = interface.ifname
+ res_intf['rx_packets'] = _get_counter_val(cache['rx_packets'], stats['rx_packets'])
+ res_intf['rx_bytes'] = _get_counter_val(cache['rx_bytes'], stats['rx_bytes'])
+ res_intf['tx_packets'] = _get_counter_val(cache['tx_packets'], stats['tx_packets'])
+ res_intf['tx_bytes'] = _get_counter_val(cache['tx_bytes'], stats['tx_bytes'])
+
+ ret.append(res_intf)
+
+ return ret
+
+@catch_broken_pipe
+def _format_show_data(data: list):
+ unhandled = []
+ for intf in data:
+ if 'unhandled' in intf:
+ unhandled.append(intf)
+ continue
+ # instead of reformatting data, call non-json output:
+ rc, out = rc_cmd(f"ip addr show {intf['ifname']}")
+ if rc != 0:
+ continue
+ out = re.sub('^\d+:\s+','',out)
+ # add additional data already collected
+ if 'tunnel6' in intf:
+ t6_d = intf['tunnel6']
+ t6_str = 'encaplimit %s hoplimit %s tclass %s flowlabel %s (flowinfo %s)' % (
+ t6_d.get('encap_limit', ''), t6_d.get('hoplimit', ''),
+ t6_d.get('tclass', ''), t6_d.get('flowlabel', ''),
+ t6_d.get('flowinfo', ''))
+ out = re.sub('(\n\s+)(link/tunnel6)', f'\g<1>{t6_str}\g<1>\g<2>', out)
+ print(out)
+ ts = intf.get('counters_last_clear', 0)
+ if ts:
+ when = datetime.fromtimestamp(ts).strftime("%a %b %d %R:%S %Z %Y")
+ print(f' Last clear: {when}')
+ description = intf.get('description', '')
+ if description:
+ print(f' Description: {description}')
+
+ stats = intf.get('stats', {})
+ if stats:
+ print()
+ print(_format_stats(stats))
+
+ for intf in unhandled:
+ string = {
+ 'C': 'Coming up',
+ 'D': 'Link down'
+ }[intf['state']]
+ print(f"{intf['ifname']}: {string}")
+
+ return 0
+
+@catch_broken_pipe
+def _format_show_summary(data):
+ 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 % ("---------", "----------", "---", "-----------"))
+
+ unhandled = []
+ for intf in data:
+ if 'unhandled' in intf:
+ unhandled.append(intf)
+ continue
+ ifname = [intf['ifname'],]
+ oper = ['u',] if intf['oper_state'] in ('up', 'unknown') else ['D',]
+ admin = ['u',] if intf['admin_state'] in ('up', 'unknown') else ['A',]
+ addrs = intf['addr'] or ['-',]
+ descs = list(_split_text(intf['description'], 0))
+
+ while ifname or oper or admin or addrs or descs:
+ i = ifname.pop(0) if ifname else ''
+ a = addrs.pop(0) if addrs else ''
+ d = descs.pop(0) if descs else ''
+ s = [admin.pop(0)] if admin else []
+ l = [oper.pop(0)] if oper else []
+ if len(a) < 33:
+ print(format1 % (i, a, '/'.join(s+l), d))
+ else:
+ print(format2 % (i, a))
+ print(format1 % ('', '', '/'.join(s+l), d))
+
+ for intf in unhandled:
+ string = {
+ 'C': 'u/D',
+ 'D': 'A/D'
+ }[intf['state']]
+ print(format1 % (ifname, '', string, ''))
+
+ return 0
+
+@catch_broken_pipe
+def _format_show_counters(data: list):
+ formatting = '%-12s %10s %10s %10s %10s'
+ print(formatting % ('Interface', 'Rx Packets', 'Rx Bytes', 'Tx Packets', 'Tx Bytes'))
+
+ for intf in data:
+ print(formatting % (
+ intf['ifname'],
+ intf['rx_packets'],
+ intf['rx_bytes'],
+ intf['tx_packets'],
+ intf['tx_bytes']
+ ))
+
+ return 0
+
+def show(raw: bool, intf_name: typing.Optional[str],
+ intf_type: typing.Optional[str],
+ vif: bool, vrrp: bool):
+ data = _get_raw_data(intf_name, intf_type, vif, vrrp)
+ if raw:
+ return data
+ return _format_show_data(data)
+
+def show_summary(raw: bool, intf_name: typing.Optional[str],
+ intf_type: typing.Optional[str],
+ vif: bool, vrrp: bool):
+ data = _get_summary_data(intf_name, intf_type, vif, vrrp)
+ if raw:
+ return data
+ return _format_show_summary(data)
+
+def show_counters(raw: bool, intf_name: typing.Optional[str],
+ intf_type: typing.Optional[str],
+ vif: bool, vrrp: bool):
+ data = _get_counter_data(intf_name, intf_type, vif, vrrp)
+ if raw:
+ return data
+ return _format_show_counters(data)
+
+if __name__ == '__main__':
+ try:
+ res = vyos.opmode.run(sys.modules[__name__])
+ if res:
+ print(res)
+ except (ValueError, vyos.opmode.Error) as e:
+ print(e)
+ sys.exit(1)