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-rwxr-xr-xsrc/helpers/system-versions-foot.py21
-rwxr-xr-xsrc/helpers/vyos-domain-group-resolve.py60
-rwxr-xr-xsrc/helpers/vyos-domain-resolver.py183
-rwxr-xr-xsrc/helpers/vyos-failover.py184
4 files changed, 372 insertions, 76 deletions
diff --git a/src/helpers/system-versions-foot.py b/src/helpers/system-versions-foot.py
index 2aa687221..9614f0d28 100755
--- a/src/helpers/system-versions-foot.py
+++ b/src/helpers/system-versions-foot.py
@@ -1,6 +1,6 @@
#!/usr/bin/python3
-# Copyright 2019 VyOS maintainers and contributors <maintainers@vyos.io>
+# Copyright 2019, 2022 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
@@ -16,24 +16,13 @@
# along with this library. If not, see <http://www.gnu.org/licenses/>.
import sys
-import vyos.formatversions as formatversions
-import vyos.systemversions as systemversions
import vyos.defaults
-import vyos.version
-
-sys_versions = systemversions.get_system_component_version()
-
-component_string = formatversions.format_versions_string(sys_versions)
-
-os_version_string = vyos.version.get_version()
+from vyos.component_version import write_system_footer
sys.stdout.write("\n\n")
if vyos.defaults.cfg_vintage == 'vyos':
- formatversions.write_vyos_versions_foot(None, component_string,
- os_version_string)
+ write_system_footer(None, vintage='vyos')
elif vyos.defaults.cfg_vintage == 'vyatta':
- formatversions.write_vyatta_versions_foot(None, component_string,
- os_version_string)
+ write_system_footer(None, vintage='vyatta')
else:
- formatversions.write_vyatta_versions_foot(None, component_string,
- os_version_string)
+ write_system_footer(None, vintage='vyos')
diff --git a/src/helpers/vyos-domain-group-resolve.py b/src/helpers/vyos-domain-group-resolve.py
deleted file mode 100755
index 6b677670b..000000000
--- a/src/helpers/vyos-domain-group-resolve.py
+++ /dev/null
@@ -1,60 +0,0 @@
-#!/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 time
-
-from vyos.configquery import ConfigTreeQuery
-from vyos.firewall import get_ips_domains_dict
-from vyos.firewall import nft_add_set_elements
-from vyos.firewall import nft_flush_set
-from vyos.firewall import nft_init_set
-from vyos.firewall import nft_update_set_elements
-from vyos.util import call
-
-
-base = ['firewall', 'group', 'domain-group']
-check_required = True
-# count_failed = 0
-# Timeout in sec between checks
-timeout = 300
-
-domain_state = {}
-
-if __name__ == '__main__':
-
- while check_required:
- config = ConfigTreeQuery()
- if config.exists(base):
- domain_groups = config.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
- for set_name, domain_config in domain_groups.items():
- list_domains = domain_config['address']
- elements = []
- ip_dict = get_ips_domains_dict(list_domains)
-
- for domain in list_domains:
- # Resolution succeeded, update domain state
- if domain in ip_dict:
- domain_state[domain] = ip_dict[domain]
- elements += ip_dict[domain]
- # Resolution failed, use previous domain state
- elif domain in domain_state:
- elements += domain_state[domain]
-
- # Resolve successful
- if elements:
- nft_update_set_elements(f'D_{set_name}', elements)
- time.sleep(timeout)
diff --git a/src/helpers/vyos-domain-resolver.py b/src/helpers/vyos-domain-resolver.py
new file mode 100755
index 000000000..e31d9238e
--- /dev/null
+++ b/src/helpers/vyos-domain-resolver.py
@@ -0,0 +1,183 @@
+#!/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 json
+import os
+import time
+
+from vyos.configdict import dict_merge
+from vyos.configquery import ConfigTreeQuery
+from vyos.firewall import fqdn_config_parse
+from vyos.firewall import fqdn_resolve
+from vyos.util import cmd
+from vyos.util import commit_in_progress
+from vyos.util import dict_search_args
+from vyos.util import run
+from vyos.xml import defaults
+
+base = ['firewall']
+timeout = 300
+cache = False
+
+domain_state = {}
+
+ipv4_tables = {
+ 'ip vyos_mangle',
+ 'ip vyos_filter',
+ 'ip vyos_nat'
+}
+
+ipv6_tables = {
+ 'ip6 vyos_mangle',
+ 'ip6 vyos_filter'
+}
+
+def get_config(conf):
+ firewall = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True,
+ no_tag_node_value_mangle=True)
+
+ default_values = defaults(base)
+ for tmp in ['name', 'ipv6_name']:
+ if tmp in default_values:
+ del default_values[tmp]
+
+ if 'zone' in default_values:
+ del default_values['zone']
+
+ firewall = dict_merge(default_values, firewall)
+
+ global timeout, cache
+
+ if 'resolver_interval' in firewall:
+ timeout = int(firewall['resolver_interval'])
+
+ if 'resolver_cache' in firewall:
+ cache = True
+
+ fqdn_config_parse(firewall)
+
+ return firewall
+
+def resolve(domains, ipv6=False):
+ global domain_state
+
+ ip_list = set()
+
+ for domain in domains:
+ resolved = fqdn_resolve(domain, ipv6=ipv6)
+
+ if resolved and cache:
+ domain_state[domain] = resolved
+ elif not resolved:
+ if domain not in domain_state:
+ continue
+ resolved = domain_state[domain]
+
+ ip_list = ip_list | resolved
+ return ip_list
+
+def nft_output(table, set_name, ip_list):
+ output = [f'flush set {table} {set_name}']
+ if ip_list:
+ ip_str = ','.join(ip_list)
+ output.append(f'add element {table} {set_name} {{ {ip_str} }}')
+ return output
+
+def nft_valid_sets():
+ try:
+ valid_sets = []
+ sets_json = cmd('nft -j list sets')
+ sets_obj = json.loads(sets_json)
+
+ for obj in sets_obj['nftables']:
+ if 'set' in obj:
+ family = obj['set']['family']
+ table = obj['set']['table']
+ name = obj['set']['name']
+ valid_sets.append((f'{family} {table}', name))
+
+ return valid_sets
+ except:
+ return []
+
+def update(firewall):
+ conf_lines = []
+ count = 0
+
+ valid_sets = nft_valid_sets()
+
+ domain_groups = dict_search_args(firewall, 'group', 'domain_group')
+ if domain_groups:
+ for set_name, domain_config in domain_groups.items():
+ if 'address' not in domain_config:
+ continue
+
+ nft_set_name = f'D_{set_name}'
+ domains = domain_config['address']
+
+ ip_list = resolve(domains, ipv6=False)
+ for table in ipv4_tables:
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+
+ ip6_list = resolve(domains, ipv6=True)
+ for table in ipv6_tables:
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip6_list)
+ count += 1
+
+ for set_name, domain in firewall['ip_fqdn'].items():
+ table = 'ip vyos_filter'
+ nft_set_name = f'FQDN_{set_name}'
+
+ ip_list = resolve([domain], ipv6=False)
+
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+ count += 1
+
+ for set_name, domain in firewall['ip6_fqdn'].items():
+ table = 'ip6 vyos_filter'
+ nft_set_name = f'FQDN_{set_name}'
+
+ ip_list = resolve([domain], ipv6=True)
+ if (table, nft_set_name) in valid_sets:
+ conf_lines += nft_output(table, nft_set_name, ip_list)
+ count += 1
+
+ nft_conf_str = "\n".join(conf_lines) + "\n"
+ code = run(f'nft -f -', input=nft_conf_str)
+
+ print(f'Updated {count} sets - result: {code}')
+
+if __name__ == '__main__':
+ print(f'VyOS domain resolver')
+
+ count = 1
+ while commit_in_progress():
+ if ( count % 60 == 0 ):
+ print(f'Commit still in progress after {count}s - waiting')
+ count += 1
+ time.sleep(1)
+
+ conf = ConfigTreeQuery()
+ firewall = get_config(conf)
+
+ print(f'interval: {timeout}s - cache: {cache}')
+
+ while True:
+ update(firewall)
+ time.sleep(timeout)
diff --git a/src/helpers/vyos-failover.py b/src/helpers/vyos-failover.py
new file mode 100755
index 000000000..1ac193423
--- /dev/null
+++ b/src/helpers/vyos-failover.py
@@ -0,0 +1,184 @@
+#!/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 argparse
+import json
+import subprocess
+import socket
+import time
+
+from vyos.util import rc_cmd
+from pathlib import Path
+from systemd import journal
+
+
+my_name = Path(__file__).stem
+
+
+def get_best_route_options(route, debug=False):
+ """
+ Return current best route ('gateway, interface, metric)
+
+ % get_best_route_options('203.0.113.1')
+ ('192.168.0.1', 'eth1', 1)
+
+ % get_best_route_options('203.0.113.254')
+ (None, None, None)
+ """
+ rc, data = rc_cmd(f'ip --detail --json route show protocol failover {route}')
+ if rc == 0:
+ data = json.loads(data)
+ if len(data) == 0:
+ print(f'\nRoute {route} for protocol failover was not found')
+ return None, None, None
+ # Fake metric 999 by default
+ # Search route with the lowest metric
+ best_metric = 999
+ for entry in data:
+ if debug: print('\n', entry)
+ metric = entry.get('metric')
+ gateway = entry.get('gateway')
+ iface = entry.get('dev')
+ if metric < best_metric:
+ best_metric = metric
+ best_gateway = gateway
+ best_interface = iface
+ if debug:
+ print(f'### Best_route exists: {route}, best_gateway: {best_gateway}, '
+ f'best_metric: {best_metric}, best_iface: {best_interface}')
+ return best_gateway, best_interface, best_metric
+
+def is_port_open(ip, port):
+ """
+ Check connection to remote host and port
+ Return True if host alive
+
+ % is_port_open('example.com', 8080)
+ True
+ """
+ s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
+ s.settimeout(2)
+ try:
+ s.connect((ip, int(port)))
+ s.shutdown(socket.SHUT_RDWR)
+ return True
+ except:
+ return False
+ finally:
+ s.close()
+
+def is_target_alive(target=None, iface='', proto='icmp', port=None, debug=False):
+ """
+ Host availability check by ICMP, ARP, TCP
+ Return True if target checks is successful
+
+ % is_target_alive('192.0.2.1', 'eth1', proto='arp')
+ True
+ """
+ if iface != '':
+ iface = f'-I {iface}'
+ if proto == 'icmp':
+ command = f'/usr/bin/ping -q {target} {iface} -n -c 2 -W 1'
+ rc, response = rc_cmd(command)
+ if debug: print(f' [ CHECK-TARGET ]: [{command}] -- return-code [RC: {rc}]')
+ if rc == 0:
+ return True
+ elif proto == 'arp':
+ command = f'/usr/bin/arping -b -c 2 -f -w 1 -i 1 {iface} {target}'
+ rc, response = rc_cmd(command)
+ if debug: print(f' [ CHECK-TARGET ]: [{command}] -- return-code [RC: {rc}]')
+ if rc == 0:
+ return True
+ elif proto == 'tcp' and port is not None:
+ return True if is_port_open(target, port) else False
+ else:
+ return False
+
+
+if __name__ == '__main__':
+ # Parse command arguments and get config
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-c',
+ '--config',
+ action='store',
+ help='Path to protocols failover configuration',
+ required=True,
+ type=Path)
+
+ args = parser.parse_args()
+ try:
+ config_path = Path(args.config)
+ config = json.loads(config_path.read_text())
+ except Exception as err:
+ print(
+ f'Configuration file "{config_path}" does not exist or malformed: {err}'
+ )
+ exit(1)
+
+ # Useful debug info to console, use debug = True
+ # sudo systemctl stop vyos-failover.service
+ # sudo /usr/libexec/vyos/vyos-failover.py --config /run/vyos-failover.conf
+ debug = False
+
+ while(True):
+
+ for route, route_config in config.get('route').items():
+
+ exists_route = exists_gateway, exists_iface, exists_metric = get_best_route_options(route, debug=debug)
+
+ for next_hop, nexthop_config in route_config.get('next_hop').items():
+ conf_iface = nexthop_config.get('interface')
+ conf_metric = int(nexthop_config.get('metric'))
+ port = nexthop_config.get('check').get('port')
+ port_opt = f'port {port}' if port else ''
+ proto = nexthop_config.get('check').get('type')
+ target = nexthop_config.get('check').get('target')
+ timeout = nexthop_config.get('check').get('timeout')
+
+ # Best route not fonund in the current routing table
+ if exists_route == (None, None, None):
+ if debug: print(f" [NEW_ROUTE_DETECTED] route: [{route}]")
+ # Add route if check-target alive
+ if is_target_alive(target, conf_iface, proto, port, debug=debug):
+ if debug: print(f' [ ADD ] -- ip route add {route} via {next_hop} dev {conf_iface} '
+ f'metric {conf_metric} proto failover\n###')
+ rc, command = rc_cmd(f'ip route add {route} via {next_hop} dev {conf_iface} '
+ f'metric {conf_metric} proto failover')
+ # If something is wrong and gateway not added
+ # Example: Error: Next-hop has invalid gateway.
+ if rc !=0:
+ if debug: print(f'{command} -- return-code [RC: {rc}] {next_hop} dev {conf_iface}')
+ else:
+ journal.send(f'ip route add {route} via {next_hop} dev {conf_iface} '
+ f'metric {conf_metric} proto failover', SYSLOG_IDENTIFIER=my_name)
+ else:
+ if debug: print(f' [ TARGET_FAIL ] target checks fails for [{target}], do nothing')
+ journal.send(f'Check fail for route {route} target {target} proto {proto} '
+ f'{port_opt}', SYSLOG_IDENTIFIER=my_name)
+
+ # Route was added, check if the target is alive
+ # We should delete route if check fails only if route exists in the routing table
+ if not is_target_alive(target, conf_iface, proto, port, debug=debug) and \
+ exists_route != (None, None, None):
+ if debug:
+ print(f'Nexh_hop {next_hop} fail, target not response')
+ print(f' [ DEL ] -- ip route del {route} via {next_hop} dev {conf_iface} '
+ f'metric {conf_metric} proto failover [DELETE]')
+ rc_cmd(f'ip route del {route} via {next_hop} dev {conf_iface} metric {conf_metric} proto failover')
+ journal.send(f'ip route del {route} via {next_hop} dev {conf_iface} '
+ f'metric {conf_metric} proto failover', SYSLOG_IDENTIFIER=my_name)
+
+ time.sleep(int(timeout))
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 08:07:08 +0000