firewall: T6257: Show member information for dynamic groups in op-mode (backport #3369)

src/op_mode/firewall.py

@@ -16,6 +16,7 @@
 
 import argparse
 import ipaddress
+import json
 import re
 import tabulate
 import textwrap
@@ -89,10 +90,38 @@ def get_nftables_details(family, hook, priority):
         out[rule_id] = rule
     return out
 
-def output_firewall_vertical(rules, headers):
+def get_nftables_group_members(family, table, name):
+    prefix = 'ip6' if family == 'ipv6' else 'ip'
+    out = []
+
+    try:
+        results_str = cmd(f'sudo nft -j list set {prefix} {table} {name}')
+        results = json.loads(results_str)
+    except:
+        return out
+
+    if 'nftables' not in results:
+        return out
+
+    for obj in results['nftables']:
+        if 'set' not in obj:
+            continue
+
+        set_obj = obj['set']
+
+        if 'elem' in set_obj:
+            for elem in set_obj['elem']:
+                if isinstance(elem, str):
+                    out.append(elem)
+                elif isinstance(elem, dict) and 'elem' in elem:
+                    out.append(elem['elem'])
+
+    return out
+
+def output_firewall_vertical(rules, headers, adjust=True):
     for rule in rules:
-        adjusted_rule = rule + [""] * (len(headers) - len(rule)) # account for different header length, like default-action
-        transformed_rule = [[header, textwrap.fill(adjusted_rule[i].replace('\n', ' '), 65)] for i, header in enumerate(headers)] # create key-pair list from headers and rules lists; wrap at 100 char
+        adjusted_rule = rule + [""] * (len(headers) - len(rule)) if adjust else rule # account for different header length, like default-action
+        transformed_rule = [[header, textwrap.fill(adjusted_rule[i].replace('\n', ' '), 65)] for i, header in enumerate(headers) if i < len(adjusted_rule)] # create key-pair list from headers and rules lists; wrap at 100 char
 
         print(tabulate.tabulate(transformed_rule, tablefmt="presto"))
         print()
@@ -453,6 +482,7 @@ def find_references(group_type, group_name):
         return out
 
     rows = []
+    header_tail = []
 
     for group_type, group_type_conf in firewall['group'].items():
         ##
@@ -479,21 +509,53 @@ def find_references(group_type, group_name):
                 rows.append(row)
 
         else:
+            if not args.detail:
+                header_tail = ['Timeout', 'Expires']
+
             for dynamic_type in ['address_group', 'ipv6_address_group']:
+                family = 'ipv4' if dynamic_type == 'address_group' else 'ipv6'
+                prefix = 'DA_' if dynamic_type == 'address_group' else 'DA6_'
                 if dynamic_type in firewall['group']['dynamic_group']:
                     for dynamic_name, dynamic_conf in firewall['group']['dynamic_group'][dynamic_type].items():
                         references = find_references(dynamic_type, dynamic_name)
                         row = [dynamic_name, textwrap.fill(dynamic_conf.get('description') or '', 50), dynamic_type + '(dynamic)', '\n'.join(references) or 'N/D']
-                        row.append('N/D')
-                        rows.append(row)
+
+                        members = get_nftables_group_members(family, 'vyos_filter', f'{prefix}{dynamic_name}')
+
+                        if not members:
+                            if args.detail:
+                                row.append('N/D')
+                            else:
+                                row += ["N/D"] * 3
+                            rows.append(row)
+                            continue
+
+                        for idx, member in enumerate(members):
+                            val = member.get('val', 'N/D')
+                            timeout = str(member.get('timeout', 'N/D'))
+                            expires = str(member.get('expires', 'N/D'))
+
+                            if args.detail:
+                                row.append(f'{val} (timeout: {timeout}, expires: {expires})')
+                                continue
+
+                            if idx > 0:
+                                row = [""] * 4
+
+                            row += [val, timeout, expires]
+                            rows.append(row)
+
+                        if args.detail:
+                            header_tail += [""] * (len(members) - 1)
+                            rows.append(row)
 
     if rows:
         print('Firewall Groups\n')
         if args.detail:
-            header = ['Name', 'Description','Type', 'References', 'Members']
-            output_firewall_vertical(rows, header)
+            header = ['Name', 'Description', 'Type', 'References', 'Members'] + header_tail
+            output_firewall_vertical(rows, header, adjust=False)
         else:
-            header = ['Name', 'Type', 'References', 'Members']
+            header = ['Name', 'Type', 'References', 'Members'] + header_tail
             for i in rows:
                 rows[rows.index(i)].pop(1)
             print(tabulate.tabulate(rows, header))