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docker/routlin-dash/app/pages/dnsblocking/content.json

@@ -207,6 +207,18 @@
               "value": "%GENERAL_LOG_ERRORS_ONLY%",
               "hint": "Only write error-level messages to the log."
             },
+            {
+              "type": "hr"
+            },
+            {
+              "type": "pre_block",
+              "text": "%DNS_LOG_TAIL%",
+              "scroll_to_bottom": true
+            },
+            {
+              "type": "raw_html",
+              "html": "%DNS_LOG_SUMMARY%"
+            },
             {
               "type": "button_row",
               "items": [

docker/routlin-dash/app/pages/dnsblocking/view.py

@@ -1,9 +1,38 @@
 import json
 import os
 from datetime import datetime, timezone
-from config_utils import collect_layout_tokens, load_datasource, fmt_bytes, relative_time, BLOCKLISTS_DIR
+from config_utils import collect_layout_tokens, load_datasource, fmt_bytes, relative_time, BLOCKLISTS_DIR, CONFIGS_DIR
 from factory import e, load_json, build_table, table_token_key, iter_table_items, PAGES_DIR
 
+DNS_LOG_FILE = f'{CONFIGS_DIR}/dns-blocklists.log'
+DNS_LOG_MAX  = 50
+
+
+def _dnsblocking_log_tail(cfg):
+    try:
+        log_max_kb = cfg.get('dns_blocking', {}).get('general', {}).get('log_max_kb', 1024)
+        size_kb = os.path.getsize(DNS_LOG_FILE) / 1024
+        with open(DNS_LOG_FILE) as f:
+            lines = f.readlines()
+        if not lines:
+            return '(log is empty)', ''
+        total  = len(lines)
+        tail   = lines[-DNS_LOG_MAX:]
+        shown  = len(tail)
+        hidden = total - shown
+        pct    = min(100, round(size_kb / log_max_kb * 100)) if log_max_kb else 0
+        left   = f'Showing {shown} of {total} lines ({hidden} not shown)' if hidden > 0 else f'Showing {shown} of {total} lines'
+        right  = f'Log file size: {size_kb:.1f} KB ({pct}% of max)'
+        summary = (
+            '<div class="text-muted" style="display:flex;justify-content:space-between;margin-top:0.5em;">'
+            f'<span>{left}</span><span>{right}</span></div>'
+        )
+        return ''.join(tail).strip(), summary
+    except FileNotFoundError:
+        return '(log file not found)', ''
+    except Exception:
+        return '(error reading log)', ''
+
 
 def blocklist_stats_html(cfg):
     rows = ''
@@ -50,6 +79,7 @@ def collect_tokens(cfg):
     tokens['GENERAL_LOG_ERRORS_ONLY']    = 'true' if dns_blk_gen.get('log_errors_only') else 'false'
     tokens['GENERAL_DAILY_EXECUTE_TIME'] = str(dns_blk_gen.get('daily_execute_time_24hr_local', '-'))
     tokens['BLOCKLIST_STATS_HTML']       = blocklist_stats_html(cfg)
+    tokens['DNS_LOG_TAIL'], tokens['DNS_LOG_SUMMARY'] = _dnsblocking_log_tail(cfg)
     tokens['BLOCKLIST_FORMAT_OPTIONS']   = json.dumps([
         {'value': 'hosts',   'label': 'hosts (hosts file format)'},
         {'value': 'dnsmasq', 'label': 'dnsmasq (local=/ syntax)'},