Merge pull request #2432 from nicolas-fort/T5513-fwall-show-sagitta

T5513: firewall - op-mode command backport

1 files changed, 210 insertions, 74 deletions

diff --git a/src/op_mode/firewall.py b/src/op_mode/firewall.py
index c5d5848c2..d426b62e5 100755
--- a/src/op_mode/firewall.py
+++ b/src/op_mode/firewall.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021 VyOS maintainers and contributors
+# Copyright (C) 2023 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
@@ -24,27 +24,48 @@ from vyos.config import Config
 from vyos.utils.process import cmd
 from vyos.utils.dict import dict_search_args
 
-def get_config_firewall(conf, hook=None, priority=None, ipv6=False):
-    config_path = ['firewall']
-    if hook:
-        config_path += ['ipv6' if ipv6 else 'ipv4', hook]
-        if priority:
-            config_path += [priority]
+def get_config_node(conf, node=None, family=None, hook=None, priority=None):
+    if node == 'nat':
+        if family == 'ipv6':
+            config_path = ['nat66']
+        else:
+            config_path = ['nat']
 
-    firewall = conf.get_config_dict(config_path, key_mangling=('-', '_'),
+    elif node == 'policy':
+        config_path = ['policy']
+    else:
+        config_path = ['firewall']
+        if family:
+            config_path += [family]
+            if hook:
+                config_path += [hook]
+                if priority:
+                    config_path += [priority]
+
+    node_config = conf.get_config_dict(config_path, key_mangling=('-', '_'),
                                 get_first_key=True, no_tag_node_value_mangle=True)
 
-    return firewall
+    return node_config
+
+def get_nftables_details(family, hook, priority):
+    if family == 'ipv6':
+        suffix = 'ip6'
+        name_prefix = 'NAME6_'
+        aux='IPV6_'
+    elif family == 'ipv4':
+        suffix = 'ip'
+        name_prefix = 'NAME_'
+        aux=''
+    else:
+        suffix = 'bridge'
+        name_prefix = 'NAME_'
+        aux=''
 
-def get_nftables_details(hook, priority, ipv6=False):
-    suffix = '6' if ipv6 else ''
-    aux = 'IPV6_' if ipv6 else ''
-    name_prefix = 'NAME6_' if ipv6 else 'NAME_'
     if hook == 'name' or hook == 'ipv6-name':
-        command = f'sudo nft list chain ip{suffix} vyos_filter {name_prefix}{priority}'
+        command = f'sudo nft list chain {suffix} vyos_filter {name_prefix}{priority}'
     else:
         up_hook = hook.upper()
-        command = f'sudo nft list chain ip{suffix} vyos_filter VYOS_{aux}{up_hook}_{priority}'
+        command = f'sudo nft list chain {suffix} vyos_filter VYOS_{aux}{up_hook}_{priority}'
 
     try:
         results = cmd(command)
@@ -68,11 +89,10 @@ def get_nftables_details(hook, priority, ipv6=False):
         out[rule_id] = rule
     return out
 
-def output_firewall_name(hook, priority, firewall_conf, ipv6=False, single_rule_id=None):
-    ip_str = 'IPv6' if ipv6 else 'IPv4'
-    print(f'\n---------------------------------\n{ip_str} Firewall "{hook} {priority}"\n')
+def output_firewall_name(family, hook, priority, firewall_conf, single_rule_id=None):
+    print(f'\n---------------------------------\n{family} Firewall "{hook} {priority}"\n')
 
-    details = get_nftables_details(hook, priority, ipv6)
+    details = get_nftables_details(family, hook, priority)
     rows = []
 
     if 'rule' in firewall_conf:
@@ -91,7 +111,15 @@ def output_firewall_name(hook, priority, firewall_conf, ipv6=False, single_rule_
                 row.append(rule_details['conditions'])
             rows.append(row)
 
-    if 'default_action' in firewall_conf and not single_rule_id:
+    if hook in ['input', 'forward', 'output']:
+        def_action = firewall_conf['default_action'] if 'default_action' in firewall_conf else 'accept'
+        row = ['default', def_action, 'all']
+        rule_details = details['default-action']
+        row.append(rule_details.get('packets', 0))
+        row.append(rule_details.get('bytes', 0))
+        rows.append(row)
+
+    elif 'default_action' in firewall_conf and not single_rule_id:
         row = ['default', firewall_conf['default_action'], 'all']
         if 'default-action' in details:
             rule_details = details['default-action']
@@ -103,11 +131,10 @@ def output_firewall_name(hook, priority, firewall_conf, ipv6=False, single_rule_
         header = ['Rule', 'Action', 'Protocol', 'Packets', 'Bytes', 'Conditions']
         print(tabulate.tabulate(rows, header) + '\n')
 
-def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_rule_id=None):
-    ip_str = 'IPv6' if ipv6 else 'IPv4'
-    print(f'\n---------------------------------\n{ip_str} Firewall "{hook} {prior}"\n')
+def output_firewall_name_statistics(family, hook, prior, prior_conf, single_rule_id=None):
+    print(f'\n---------------------------------\n{family} Firewall "{hook} {prior}"\n')
 
-    details = get_nftables_details(hook, prior, ipv6)
+    details = get_nftables_details(family, hook, prior)
     rows = []
 
     if 'rule' in prior_conf:
@@ -127,7 +154,15 @@ def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_
                     if not source_addr:
                         source_addr = dict_search_args(rule_conf, 'source', 'group', 'domain_group')
                         if not source_addr:
-                            source_addr = '::/0' if ipv6 else '0.0.0.0/0'
+                            source_addr = dict_search_args(rule_conf, 'source', 'fqdn')
+                            if not source_addr:
+                                source_addr = dict_search_args(rule_conf, 'source', 'geoip', 'country_code')
+                                if source_addr:
+                                    source_addr = str(source_addr)[1:-1].replace('\'','')
+                                    if 'inverse_match' in dict_search_args(rule_conf, 'source', 'geoip'):
+                                        source_addr = 'NOT ' + str(source_addr)
+                                if not source_addr:
+                                    source_addr = 'any'
 
             # Get destination
             dest_addr = dict_search_args(rule_conf, 'destination', 'address')
@@ -138,19 +173,27 @@ def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_
                     if not dest_addr:
                         dest_addr = dict_search_args(rule_conf, 'destination', 'group', 'domain_group')
                         if not dest_addr:
-                            dest_addr = '::/0' if ipv6 else '0.0.0.0/0'
+                            dest_addr = dict_search_args(rule_conf, 'destination', 'fqdn')
+                            if not dest_addr:
+                                dest_addr = dict_search_args(rule_conf, 'destination', 'geoip', 'country_code')
+                                if dest_addr:
+                                    dest_addr = str(dest_addr)[1:-1].replace('\'','')
+                                    if 'inverse_match' in dict_search_args(rule_conf, 'destination', 'geoip'):
+                                        dest_addr = 'NOT ' + str(dest_addr)
+                                if not dest_addr:
+                                    dest_addr = 'any'
 
             # Get inbound interface
-            iiface = dict_search_args(rule_conf, 'inbound_interface', 'interface_name')
+            iiface = dict_search_args(rule_conf, 'inbound_interface', 'name')
             if not iiface:
-                iiface = dict_search_args(rule_conf, 'inbound_interface', 'interface_group')
+                iiface = dict_search_args(rule_conf, 'inbound_interface', 'group')
                 if not iiface:
                     iiface = 'any'
 
             # Get outbound interface
-            oiface = dict_search_args(rule_conf, 'outbound_interface', 'interface_name')
+            oiface = dict_search_args(rule_conf, 'outbound_interface', 'name')
             if not oiface:
-                oiface = dict_search_args(rule_conf, 'outbound_interface', 'interface_group')
+                oiface = dict_search_args(rule_conf, 'outbound_interface', 'group')
                 if not oiface:
                     oiface = 'any'
 
@@ -169,7 +212,23 @@ def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_
             row.append(oiface)
             rows.append(row)
 
-    if 'default_action' in prior_conf and not single_rule_id:
+
+    if hook in ['input', 'forward', 'output']:
+        row = ['default']
+        rule_details = details['default-action']
+        row.append(rule_details.get('packets', 0))
+        row.append(rule_details.get('bytes', 0))
+        if 'default_action' in prior_conf:
+            row.append(prior_conf['default_action'])
+        else:
+            row.append('accept')
+        row.append('any')
+        row.append('any')
+        row.append('any')
+        row.append('any')
+        rows.append(row)
+
+    elif 'default_action' in prior_conf and not single_rule_id:
         row = ['default']
         if 'default-action' in details:
             rule_details = details['default-action']
@@ -179,8 +238,10 @@ def output_firewall_name_statistics(hook, prior, prior_conf, ipv6=False, single_
             row.append('0')
             row.append('0')
         row.append(prior_conf['default_action'])
-        row.append('0.0.0.0/0') # Source
-        row.append('0.0.0.0/0') # Dest
+        row.append('any')   # Source
+        row.append('any')   # Dest
+        row.append('any')   # inbound-interface
+        row.append('any')   # outbound-interface
         rows.append(row)
 
     if rows:
@@ -191,60 +252,56 @@ def show_firewall():
     print('Rulesets Information')
 
     conf = Config()
-    firewall = get_config_firewall(conf)
+    firewall = get_config_node(conf)
 
     if not firewall:
         return
 
-    if 'ipv4' in firewall:
-        for hook, hook_conf in firewall['ipv4'].items():
-            for prior, prior_conf in firewall['ipv4'][hook].items():
-                output_firewall_name(hook, prior, prior_conf, ipv6=False)
-
-    if 'ipv6' in firewall:
-        for hook, hook_conf in firewall['ipv6'].items():
-            for prior, prior_conf in firewall['ipv6'][hook].items():
-                output_firewall_name(hook, prior, prior_conf, ipv6=True)
+    for family in ['ipv4', 'ipv6', 'bridge']:
+        if family in firewall:
+            for hook, hook_conf in firewall[family].items():
+                for prior, prior_conf in firewall[family][hook].items():
+                    output_firewall_name(family, hook, prior, prior_conf)
 
 def show_firewall_family(family):
     print(f'Rulesets {family} Information')
 
     conf = Config()
-    firewall = get_config_firewall(conf)
+    firewall = get_config_node(conf)
 
-    if not firewall:
+    if not firewall or family not in firewall:
         return
 
     for hook, hook_conf in firewall[family].items():
         for prior, prior_conf in firewall[family][hook].items():
-            if family == 'ipv6':
-                output_firewall_name(hook, prior, prior_conf, ipv6=True)
-            else:
-                output_firewall_name(hook, prior, prior_conf, ipv6=False)
+            output_firewall_name(family, hook, prior, prior_conf)
 
-def show_firewall_name(hook, priority, ipv6=False):
+def show_firewall_name(family, hook, priority):
     print('Ruleset Information')
 
     conf = Config()
-    firewall = get_config_firewall(conf, hook, priority, ipv6)
+    firewall = get_config_node(conf, 'firewall', family, hook, priority)
     if firewall:
-        output_firewall_name(hook, priority, firewall, ipv6)
+        output_firewall_name(family, hook, priority, firewall)
 
-def show_firewall_rule(hook, priority, rule_id, ipv6=False):
+def show_firewall_rule(family, hook, priority, rule_id):
     print('Rule Information')
 
     conf = Config()
-    firewall = get_config_firewall(conf, hook, priority, ipv6)
+    firewall = get_config_node(conf, 'firewall', family, hook, priority)
     if firewall:
-        output_firewall_name(hook, priority, firewall, ipv6, rule_id)
+        output_firewall_name(family, hook, priority, firewall, rule_id)
 
 def show_firewall_group(name=None):
     conf = Config()
-    firewall = get_config_firewall(conf)
+    firewall = get_config_node(conf, node='firewall')
 
     if 'group' not in firewall:
         return
 
+    nat = get_config_node(conf, node='nat')
+    policy = get_config_node(conf, node='policy')
+
     def find_references(group_type, group_name):
         out = []
         family = []
@@ -260,6 +317,7 @@ def show_firewall_group(name=None):
             family = ['ipv4', 'ipv6']
 
         for item in family:
+            # Look references in firewall
             for name_type in ['name', 'ipv6_name', 'forward', 'input', 'output']:
                 if item in firewall:
                     if name_type not in firewall[item]:
@@ -272,8 +330,8 @@ def show_firewall_group(name=None):
                         for rule_id, rule_conf in priority_conf['rule'].items():
                             source_group = dict_search_args(rule_conf, 'source', 'group', group_type)
                             dest_group = dict_search_args(rule_conf, 'destination', 'group', group_type)
-                            in_interface = dict_search_args(rule_conf, 'inbound_interface', 'interface_group')
-                            out_interface = dict_search_args(rule_conf, 'outbound_interface', 'interface_group')
+                            in_interface = dict_search_args(rule_conf, 'inbound_interface', 'group')
+                            out_interface = dict_search_args(rule_conf, 'outbound_interface', 'group')
                             if source_group:
                                 if source_group[0] == "!":
                                     source_group = source_group[1:]
@@ -294,6 +352,76 @@ def show_firewall_group(name=None):
                                     out_interface = out_interface[1:]
                                 if group_name == out_interface:
                                     out.append(f'{item}-{name_type}-{priority}-{rule_id}')
+
+            # Look references in route | route6
+            for name_type in ['route', 'route6']:
+                if name_type not in policy:
+                    continue
+                if name_type == 'route' and item == 'ipv6':
+                    continue
+                elif name_type == 'route6' and item == 'ipv4':
+                    continue
+                else:
+                    for policy_name, policy_conf in policy[name_type].items():
+                        if 'rule' not in policy_conf:
+                            continue
+                        for rule_id, rule_conf in policy_conf['rule'].items():
+                            source_group = dict_search_args(rule_conf, 'source', 'group', group_type)
+                            dest_group = dict_search_args(rule_conf, 'destination', 'group', group_type)
+                            in_interface = dict_search_args(rule_conf, 'inbound_interface', 'group')
+                            out_interface = dict_search_args(rule_conf, 'outbound_interface', 'group')
+                            if source_group:
+                                if source_group[0] == "!":
+                                    source_group = source_group[1:]
+                                if group_name == source_group:
+                                    out.append(f'{name_type}-{policy_name}-{rule_id}')
+                            if dest_group:
+                                if dest_group[0] == "!":
+                                    dest_group = dest_group[1:]
+                                if group_name == dest_group:
+                                    out.append(f'{name_type}-{policy_name}-{rule_id}')
+                            if in_interface:
+                                if in_interface[0] == "!":
+                                    in_interface = in_interface[1:]
+                                if group_name == in_interface:
+                                    out.append(f'{name_type}-{policy_name}-{rule_id}')
+                            if out_interface:
+                                if out_interface[0] == "!":
+                                    out_interface = out_interface[1:]
+                                if group_name == out_interface:
+                                    out.append(f'{name_type}-{policy_name}-{rule_id}')
+
+        ## Look references in nat table
+        for direction in ['source', 'destination']:
+            if direction in nat:
+                if 'rule' not in nat[direction]:
+                    continue
+                for rule_id, rule_conf in nat[direction]['rule'].items():
+                    source_group = dict_search_args(rule_conf, 'source', 'group', group_type)
+                    dest_group = dict_search_args(rule_conf, 'destination', 'group', group_type)
+                    in_interface = dict_search_args(rule_conf, 'inbound_interface', 'group')
+                    out_interface = dict_search_args(rule_conf, 'outbound_interface', 'group')
+                    if source_group:
+                        if source_group[0] == "!":
+                            source_group = source_group[1:]
+                        if group_name == source_group:
+                            out.append(f'nat-{direction}-{rule_id}')
+                    if dest_group:
+                        if dest_group[0] == "!":
+                            dest_group = dest_group[1:]
+                        if group_name == dest_group:
+                            out.append(f'nat-{direction}-{rule_id}')
+                    if in_interface:
+                        if in_interface[0] == "!":
+                            in_interface = in_interface[1:]
+                        if group_name == in_interface:
+                            out.append(f'nat-{direction}-{rule_id}')
+                    if out_interface:
+                        if out_interface[0] == "!":
+                            out_interface = out_interface[1:]
+                        if group_name == out_interface:
+                            out.append(f'nat-{direction}-{rule_id}')
+
         return out
 
     header = ['Name', 'Type', 'References', 'Members']
@@ -305,7 +433,7 @@ def show_firewall_group(name=None):
                 continue
 
             references = find_references(group_type, group_name)
-            row = [group_name, group_type, '\n'.join(references) or 'N/A']
+            row = [group_name, group_type, '\n'.join(references) or 'N/D']
             if 'address' in group_conf:
                 row.append("\n".join(sorted(group_conf['address'])))
             elif 'network' in group_conf:
@@ -317,9 +445,10 @@ def show_firewall_group(name=None):
             elif 'interface' in group_conf:
                 row.append("\n".join(sorted(group_conf['interface'])))
             else:
-                row.append('N/A')
+                row.append('N/D')
             rows.append(row)
 
+
     if rows:
         print('Firewall Groups\n')
         print(tabulate.tabulate(rows, header))
@@ -328,7 +457,7 @@ def show_summary():
     print('Ruleset Summary')
 
     conf = Config()
-    firewall = get_config_firewall(conf)
+    firewall = get_config_node(conf)
 
     if not firewall:
         return
@@ -336,6 +465,7 @@ def show_summary():
     header = ['Ruleset Hook', 'Ruleset Priority', 'Description', 'References']
     v4_out = []
     v6_out = []
+    br_out = []
 
     if 'ipv4' in firewall:
         for hook, hook_conf in firewall['ipv4'].items():
@@ -349,6 +479,12 @@ def show_summary():
                 description = prior_conf.get('description', '')
                 v6_out.append([hook, prior, description])
 
+    if 'bridge' in firewall:
+        for hook, hook_conf in firewall['bridge'].items():
+            for prior, prior_conf in firewall['bridge'][hook].items():
+                description = prior_conf.get('description', '')
+                br_out.append([hook, prior, description])
+
     if v6_out:
         print('\nIPv6 Ruleset:\n')
         print(tabulate.tabulate(v6_out, header) + '\n')
@@ -357,26 +493,26 @@ def show_summary():
         print('\nIPv4 Ruleset:\n')
         print(tabulate.tabulate(v4_out, header) + '\n')
 
+    if br_out:
+        print('\nBridge Ruleset:\n')
+        print(tabulate.tabulate(br_out, header) + '\n')
+
     show_firewall_group()
 
 def show_statistics():
     print('Rulesets Statistics')
 
     conf = Config()
-    firewall = get_config_firewall(conf)
+    firewall = get_config_node(conf)
 
     if not firewall:
         return
 
-    if 'ipv4' in firewall:
-        for hook, hook_conf in firewall['ipv4'].items():
-            for prior, prior_conf in firewall['ipv4'][hook].items():
-                output_firewall_name_statistics(hook,prior, prior_conf, ipv6=False)
-
-    if 'ipv6' in firewall:
-        for hook, hook_conf in firewall['ipv6'].items():
-            for prior, prior_conf in firewall['ipv6'][hook].items():
-                output_firewall_name_statistics(hook,prior, prior_conf, ipv6=True)
+    for family in ['ipv4', 'ipv6', 'bridge']:
+        if family in firewall:
+            for hook, hook_conf in firewall[family].items():
+                for prior, prior_conf in firewall[family][hook].items():
+                    output_firewall_name_statistics(family, hook,prior, prior_conf)
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
@@ -392,9 +528,9 @@ if __name__ == '__main__':
 
     if args.action == 'show':
         if not args.rule:
-            show_firewall_name(args.hook, args.priority, args.ipv6)
+            show_firewall_name(args.family, args.hook, args.priority)
         else:
-            show_firewall_rule(args.hook, args.priority, args.rule, args.ipv6)
+            show_firewall_rule(args.family, args.hook, args.priority, args.rule)
     elif args.action == 'show_all':
         show_firewall()
     elif args.action == 'show_family':
@@ -404,4 +540,4 @@ if __name__ == '__main__':
     elif args.action == 'show_statistics':
         show_statistics()
     elif args.action == 'show_summary':
-        show_summary()
+        show_summary()
\ No newline at end of file