fix: address the automated review round on PR #6154

- Replace parseGeodataFile's full proto.Unmarshal with a protowire-based
  scan that reads only each entry's Code, skipping every Domain/CIDR
  payload without allocating it -- the actual bulk of a real
  geoip.dat/geosite.dat. Also caps the file read at 256 MiB.
- Hold geodataMu across the full scan-and-maybe-parse in
  GetGeodataCategories instead of releasing it around the parse, so
  concurrent cache misses (e.g. several browser tabs) can't all
  independently re-parse every file; clone the cached slices before
  returning them so a caller mutating its result can't corrupt the cache.
- Gate useGeodataCategories on the rule editor's own `open` state instead
  of firing on every visit to the Routing tab.
- formatGeodataSuggestion now compares filenames with strings.EqualFold,
  matching scanGeodataFiles' own case-insensitive match -- a file that IS
  the default one on a case-insensitive filesystem (e.g. Windows) no
  longer gets the long ext: form.
- Fix a real bug the review's hypothesis led to: Select mode="tags" only
  commits the search text on Enter/comma, so clicking Save right after
  typing (a blur, not an Enter) silently dropped the value entirely, with
  no domain/ip key at all in the saved rule. Wrap it in a small
  TagsAutocomplete that also commits on blur. Same autocomplete now
  applies to sourceIP, which accepts geoip:/ext: too.
- Guard useGeodataCategories' fetch per-field with Array.isArray instead
  of a single top-level `?? EMPTY_CATEGORIES`, since parseMsg returns the
  original unvalidated obj (not null) on a schema mismatch.
- Test fixes: exact slices.Equal instead of slices.Contains-only
  assertions, t.Run subtests, a cache-hit-skips-reparse test (via a
  test-only parse counter), a returns-independent-slices test, a
  file-size-cap test, and four new frontend tests covering the tags
  round-trip including the blur-commit regression above.
- GeodataCategories now goes through the same generated-example path as
  every other response type (StructAllow + example: tags + responseSchema
  in endpoints.ts) instead of a hand-written response string. The
  existing hand-written GeodataCategoriesSchema in schemas/routing.ts is
  unrelated to this and is left alone -- CLAUDE.md is explicit that Zod
  schemas under src/schemas/ are the source of truth and only the
  generated example/openapi path comes from Go example: tags.
- Drop the two PR-illustration screenshots from media/ -- nothing in the
  repo referenced them; they only ever needed to exist in the PR
  description itself.

Not changed: leaving geodataFileKind's leak into generated/{types,zod}.ts
as-is. internal/web/service's openapigen request has no AliasAllow at
all, so every non-struct type in the package already leaks this way
(e.g. staticEgressResolver, transportBits predate this PR) -- scoping an
AliasAllow for the whole package is a real cleanup but a separate, wider
change than this PR's own footprint, and needs checking nothing already
depends on those existing generated aliases first.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/public/openapi.json

@@ -1378,6 +1378,36 @@
         ],
         "type": "object"
       },
+      "GeodataCategories": {
+        "description": "GeodataCategories lists every geosite/geoip category found in the .dat\nfiles currently present in the Xray bin folder, already formatted as\nready-to-use xray-core routing-rule values (see formatGeodataSuggestion).\nReturned by XraySettingService.GetGeodataCategories and served as\nGET /panel/api/xray/getGeodataCategories for the routing rule editor's\nDomain/IP autocomplete.",
+        "properties": {
+          "domain": {
+            "example": [
+              "geosite:cn",
+              "geosite:youtube"
+            ],
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "ip": {
+            "example": [
+              "geoip:cn",
+              "geoip:private"
+            ],
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          }
+        },
+        "required": [
+          "domain",
+          "ip"
+        ],
+        "type": "object"
+      },
       "HistoryOfSeeders": {
         "description": "HistoryOfSeeders tracks which database seeders have been executed to prevent re-running.",
         "properties": {
@@ -10473,7 +10503,9 @@
                     "msg": {
                       "type": "string"
                     },
-                    "obj": {}
+                    "obj": {
+                      "$ref": "#/components/schemas/GeodataCategories"
+                    }
                   }
                 },
                 "example": {

frontend/src/api/queries/useGeodataCategories.ts

@@ -11,7 +11,15 @@ async function fetchGeodataCategories(): Promise<GeodataCategories> {
   const msg = await HttpUtil.get('/panel/api/xray/getGeodataCategories', undefined, { silent: true });
   if (!msg?.success) throw new Error(msg?.msg || 'Failed to fetch geodata categories');
   const validated = parseMsg(msg, GeodataCategoriesSchema, 'xray/getGeodataCategories');
-  return validated.obj ?? EMPTY_CATEGORIES;
+  // parseMsg falls back to the original, unvalidated obj on a schema mismatch
+  // (see zodValidate.ts) rather than clearing it, so each field is guarded
+  // independently here -- same reasoning as useInboundOptions's Array.isArray
+  // check, just applied per-field since this response is an object of two
+  // arrays rather than one top-level array.
+  return {
+    domain: Array.isArray(validated.obj?.domain) ? validated.obj.domain : EMPTY_CATEGORIES.domain,
+    ip: Array.isArray(validated.obj?.ip) ? validated.obj.ip : EMPTY_CATEGORIES.ip,
+  };
 }
 
 // Deliberately not staleTime: Infinity like useInboundOptions: geodata .dat
@@ -20,9 +28,16 @@ async function fetchGeodataCategories(): Promise<GeodataCategories> {
 // global default staleTime lets a long-open tab pick up newly downloaded
 // categories on refocus, at near-zero backend cost thanks to the
 // mtime/size cache in GetGeodataCategories.
-export function useGeodataCategories() {
+//
+// enabled defaults to true but is meant to be passed as `open` from the rule
+// editor modal: the underlying scan/parse is the expensive part of this
+// feature (see GetGeodataCategories), so it should run when the editor is
+// actually opened, not on every visit to the Routing tab that merely mounts
+// this modal closed.
+export function useGeodataCategories(enabled = true) {
   return useQuery({
     queryKey: keys.xray.geodataCategories(),
     queryFn: fetchGeodataCategories,
+    enabled,
   });
 }

frontend/src/generated/examples.ts

@@ -315,6 +315,16 @@ export const EXAMPLES: Record<string, unknown> = {
     "masterId": 0,
     "path": ""
   },
+  "GeodataCategories": {
+    "domain": [
+      "geosite:cn",
+      "geosite:youtube"
+    ],
+    "ip": [
+      "geoip:cn",
+      "geoip:private"
+    ]
+  },
   "HistoryOfSeeders": {
     "id": 0,
     "seederName": ""

frontend/src/generated/schemas.ts

@@ -1352,6 +1352,36 @@ export const SCHEMAS: Record<string, unknown> = {
     ],
     "type": "object"
   },
+  "GeodataCategories": {
+    "description": "GeodataCategories lists every geosite/geoip category found in the .dat\nfiles currently present in the Xray bin folder, already formatted as\nready-to-use xray-core routing-rule values (see formatGeodataSuggestion).\nReturned by XraySettingService.GetGeodataCategories and served as\nGET /panel/api/xray/getGeodataCategories for the routing rule editor's\nDomain/IP autocomplete.",
+    "properties": {
+      "domain": {
+        "example": [
+          "geosite:cn",
+          "geosite:youtube"
+        ],
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "ip": {
+        "example": [
+          "geoip:cn",
+          "geoip:private"
+        ],
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      }
+    },
+    "required": [
+      "domain",
+      "ip"
+    ],
+    "type": "object"
+  },
   "HistoryOfSeeders": {
     "description": "HistoryOfSeeders tracks which database seeders have been executed to prevent re-running.",
     "properties": {

frontend/src/generated/types.ts

@@ -331,6 +331,11 @@ export interface FallbackParentInfo {
   path?: string;
 }
 
+export interface GeodataCategories {
+  domain: string[];
+  ip: string[];
+}
+
 export interface HistoryOfSeeders {
   id: number;
   seederName: string;

frontend/src/generated/zod.ts

@@ -357,6 +357,12 @@ export const FallbackParentInfoSchema = z.object({
 });
 export type FallbackParentInfo = z.infer<typeof FallbackParentInfoSchema>;
 
+export const GeodataCategoriesSchema = z.object({
+  domain: z.array(z.string()),
+  ip: z.array(z.string()),
+});
+export type GeodataCategories = z.infer<typeof GeodataCategoriesSchema>;
+
 export const HistoryOfSeedersSchema = z.object({
   id: z.number().int(),
   seederName: z.string(),

frontend/src/pages/api-docs/endpoints.ts

@@ -1281,7 +1281,7 @@ export const sections: readonly Section[] = [
         method: 'GET',
         path: '/panel/api/xray/getGeodataCategories',
         summary: 'Return every geosite/geoip category found in the .dat files currently present in the Xray bin folder (including custom files added via the Geodata auto-update feature), formatted as ready-to-use routing rule values, e.g. "geosite:youtube" or "ext:geosite_roscom.dat:some-code".',
-        response: '{\n  "success": true,\n  "obj": {\n    "domain": ["geosite:cn", "geosite:youtube"],\n    "ip": ["geoip:cn", "geoip:private"]\n  }\n}',
+        responseSchema: 'GeodataCategories',
       },
       {
         method: 'POST',

frontend/src/pages/xray/routing/RuleFormModal.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo } from 'react';
+import { useEffect, useMemo, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Button, Form, Input, Modal, Select, Space, Switch, Tooltip } from 'antd';
 import { PlusOutlined, MinusOutlined, QuestionCircleOutlined } from '@ant-design/icons';
@@ -82,6 +82,51 @@ function filterBySubstring(input: string, option?: { value?: string }): boolean
   return typeof option?.value === 'string' && option.value.toLowerCase().includes(input.toLowerCase());
 }
 
+interface TagsAutocompleteProps {
+  id?: string;
+  value?: string[];
+  onChange?: (value: string[]) => void;
+  onBlur?: () => void;
+  options: { value: string; label: string }[];
+  placeholder?: string;
+}
+
+// A plain Select mode="tags" only commits the text being typed into a tag on
+// Enter or a tokenSeparator character -- clicking Save directly (a blur, not
+// an Enter) silently drops it, with no `domain`/`ip` key at all ending up in
+// the saved rule. This wraps it with a controlled searchValue that also gets
+// committed as a tag on blur, so free-text entry behaves like the old Input
+// it replaced.
+function TagsAutocomplete({ id, value, onChange, onBlur, options, placeholder }: TagsAutocompleteProps) {
+  const [searchValue, setSearchValue] = useState('');
+
+  function commitSearchValue(next: string[]) {
+    const trimmed = searchValue.trim();
+    setSearchValue('');
+    if (!trimmed || next.includes(trimmed)) return next;
+    return [...next, trimmed];
+  }
+
+  return (
+    <Select
+      id={id}
+      mode="tags"
+      value={value}
+      searchValue={searchValue}
+      onSearch={setSearchValue}
+      onChange={(next) => onChange?.(next as string[])}
+      onBlur={() => {
+        onChange?.(commitSearchValue(value ?? []));
+        onBlur?.();
+      }}
+      options={options}
+      tokenSeparators={[',']}
+      filterOption={filterBySubstring}
+      placeholder={placeholder}
+    />
+  );
+}
+
 export default function RuleFormModal({
   open,
   rule,
@@ -98,7 +143,7 @@ export default function RuleFormModal({
   const { data: inboundOptions } = useInboundOptions();
   const remarkByTag = useMemo(() => buildRemarkByTag(inboundOptions || []), [inboundOptions]);
 
-  const { data: geodataCategories } = useGeodataCategories();
+  const { data: geodataCategories } = useGeodataCategories(open);
   const domainOptions = useMemo(
     () => (geodataCategories?.domain ?? []).map((value) => ({ value, label: value })),
     [geodataCategories],
@@ -201,8 +246,9 @@ export default function RuleFormModal({
                 {t('pages.xray.ruleForm.sourceIps')} <QuestionCircleOutlined aria-hidden="true" />
               </Tooltip>
             }
+            transform={{ input: toTagsArray, output: fromTagsArray }}
           >
-            <Input placeholder="0.0.0.0/8, fc00::/7, geoip:ir" />
+            <TagsAutocomplete id="sourceIP" options={ipOptions} placeholder="0.0.0.0/8, fc00::/7, geoip:ir" />
           </FormField>
 
           <FormField
@@ -283,13 +329,7 @@ export default function RuleFormModal({
             }
             transform={{ input: toTagsArray, output: fromTagsArray }}
           >
-            <Select
-              mode="tags"
-              options={ipOptions}
-              tokenSeparators={[',']}
-              filterOption={filterBySubstring}
-              placeholder="0.0.0.0/8, fc00::/7, geoip:ir"
-            />
+            <TagsAutocomplete id="ip" options={ipOptions} placeholder="0.0.0.0/8, fc00::/7, geoip:ir" />
           </FormField>
 
           <FormField
@@ -301,13 +341,7 @@ export default function RuleFormModal({
             }
             transform={{ input: toTagsArray, output: fromTagsArray }}
           >
-            <Select
-              mode="tags"
-              options={domainOptions}
-              tokenSeparators={[',']}
-              filterOption={filterBySubstring}
-              placeholder="google.com, geosite:cn"
-            />
+            <TagsAutocomplete id="domain" options={domainOptions} placeholder="google.com, geosite:cn" />
           </FormField>
 
           <FormField

frontend/src/test/rule-form-geodata-tags.test.tsx

@@ -0,0 +1,117 @@
+import { describe, it, expect, vi } from 'vitest';
+import { fireEvent, screen } from '@testing-library/react';
+
+import RuleFormModal from '@/pages/xray/routing/RuleFormModal';
+
+import { renderWithProviders } from './test-utils';
+
+function domainInput(): HTMLInputElement {
+  const control = document.getElementById('domain');
+  const select = control?.closest('.ant-select') as HTMLElement;
+  return select.querySelector('input') as HTMLInputElement;
+}
+
+function selectedTags(fieldId: string): string[] {
+  const control = document.getElementById(fieldId);
+  const select = control?.closest('.ant-select') as HTMLElement;
+  return Array.from(select.querySelectorAll('.ant-select-selection-item')).map(
+    (el) => el.getAttribute('title') ?? el.textContent ?? '',
+  );
+}
+
+describe('RuleFormModal domain/ip tags autocomplete', () => {
+  it('renders a comma-separated existing value as tags and preserves it unchanged on save', () => {
+    const onConfirm = vi.fn();
+    renderWithProviders(
+      <RuleFormModal
+        open
+        rule={{ type: 'field', domain: 'google.com,geosite:cn', enabled: true }}
+        inboundTags={[]}
+        outboundTags={['block']}
+        balancerTags={[]}
+        onClose={vi.fn()}
+        onConfirm={onConfirm}
+      />,
+    );
+
+    expect(selectedTags('domain')).toEqual(['google.com', 'geosite:cn']);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Save Changes' }));
+
+    expect(onConfirm).toHaveBeenCalledTimes(1);
+    expect(onConfirm.mock.calls[0][0]).toMatchObject({ domain: ['google.com', 'geosite:cn'] });
+  });
+
+  it('adds a typed value to the tag list on Enter and includes it on save', () => {
+    const onConfirm = vi.fn();
+    renderWithProviders(
+      <RuleFormModal
+        open
+        rule={null}
+        inboundTags={[]}
+        outboundTags={['block']}
+        balancerTags={[]}
+        onClose={vi.fn()}
+        onConfirm={onConfirm}
+      />,
+    );
+
+    const input = domainInput();
+    fireEvent.change(input, { target: { value: 'example.com' } });
+    fireEvent.keyDown(input, { key: 'Enter', code: 'Enter', keyCode: 13, which: 13 });
+
+    fireEvent.click(screen.getByRole('button', { name: 'Create' }));
+    expect(onConfirm.mock.calls[0][0]).toMatchObject({ domain: ['example.com'] });
+  });
+
+  it('commits a typed value on blur even without pressing Enter or a comma', () => {
+    // Regression test: a plain Select mode="tags" only commits the search
+    // text on Enter/tokenSeparator. Clicking Save directly is a blur, not an
+    // Enter -- without TagsAutocomplete's onBlur commit, the typed value was
+    // silently dropped and the rule saved with no `domain` key at all.
+    const onConfirm = vi.fn();
+    renderWithProviders(
+      <RuleFormModal
+        open
+        rule={null}
+        inboundTags={[]}
+        outboundTags={['block']}
+        balancerTags={[]}
+        onClose={vi.fn()}
+        onConfirm={onConfirm}
+      />,
+    );
+
+    const input = domainInput();
+    fireEvent.change(input, { target: { value: 'blurred.com' } });
+    // A real click on Save blurs the still-focused input first (native
+    // browser focus handling); jsdom's fireEvent.click doesn't replicate
+    // that side effect, so blur is fired explicitly to match what a real
+    // click does immediately before Save's own handler runs.
+    fireEvent.blur(input);
+    fireEvent.click(screen.getByRole('button', { name: 'Create' }));
+
+    expect(onConfirm).toHaveBeenCalledTimes(1);
+    expect(onConfirm.mock.calls[0][0]).toMatchObject({ domain: ['blurred.com'] });
+  });
+
+  it('omits domain entirely when left empty', () => {
+    const onConfirm = vi.fn();
+    renderWithProviders(
+      <RuleFormModal
+        open
+        rule={null}
+        inboundTags={[]}
+        outboundTags={['block']}
+        balancerTags={[]}
+        onClose={vi.fn()}
+        onConfirm={onConfirm}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('button', { name: 'Create' }));
+
+    expect(onConfirm).toHaveBeenCalledTimes(1);
+    expect(onConfirm.mock.calls[0][0]).not.toHaveProperty('domain');
+  });
+});

internal/web/service/xray_setting_geodata.go

@@ -1,20 +1,35 @@
 package service
 
 import (
+	"fmt"
+	"io"
 	"os"
 	"path/filepath"
 	"slices"
 	"sort"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/mhsanaei/3x-ui/v3/internal/config"
 	"github.com/mhsanaei/3x-ui/v3/internal/logger"
 
 	"github.com/xtls/xray-core/common/geodata"
-	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protowire"
 )
 
+// maxGeodataFileSize bounds how much of one .dat file parseGeodataFile will
+// read from disk. Real Loyalsoldier-published geoip.dat/geosite.dat files
+// are a few MB to a few tens of MB; this leaves generous headroom while
+// still refusing an unbounded/corrupt file instead of reading it whole.
+const maxGeodataFileSize = 256 << 20 // 256 MiB
+
+// geodataParseCalls counts parseGeodataFile invocations. Not read by any
+// non-test code; exists so tests can assert that GetGeodataCategories'
+// cache actually skips re-parsing on an unchanged fingerprint, rather than
+// only checking the (identical either way) returned value.
+var geodataParseCalls atomic.Int64
+
 // GeodataCategories lists every geosite/geoip category found in the .dat
 // files currently present in the Xray bin folder, already formatted as
 // ready-to-use xray-core routing-rule values (see formatGeodataSuggestion).
@@ -22,8 +37,8 @@ import (
 // GET /panel/api/xray/getGeodataCategories for the routing rule editor's
 // Domain/IP autocomplete.
 type GeodataCategories struct {
-	Domain []string `json:"domain"`
-	IP     []string `json:"ip"`
+	Domain []string `json:"domain" example:"[\"geosite:cn\",\"geosite:youtube\"]"`
+	IP     []string `json:"ip" example:"[\"geoip:cn\",\"geoip:private\"]"`
 }
 
 // geodataFileKind distinguishes a geosite-shaped .dat file (parsed as a
@@ -73,26 +88,36 @@ type geodataCategoryCache struct {
 // file actually changes -- e.g. because xray-core's own geodata auto-update
 // downloaded a new one. A file that fails to parse (e.g. an interrupted
 // download) is skipped with a logged warning; it never fails the request.
+//
+// The mutex is held for the full scan-and-maybe-parse instead of being
+// released around buildGeodataCategories: the work is bounded and
+// idempotent (a full-file parse, not an unbounded/blocking operation), so
+// serializing it is simpler and cheaper than the alternative of N
+// concurrent cache misses (e.g. several browser tabs open at once) each
+// independently re-parsing every .dat file before any of them get to store
+// a result.
 func (s *XraySettingService) GetGeodataCategories() GeodataCategories {
 	dir := config.GetBinFolderPath()
 	entries := scanGeodataFiles(dir)
 	fingerprint := geodataFingerprintOf(entries)
 
 	s.geodataMu.Lock()
+	defer s.geodataMu.Unlock()
+
 	if s.geodataCache != nil && slices.Equal(s.geodataCache.fingerprint, fingerprint) {
-		result := s.geodataCache.result
-		s.geodataMu.Unlock()
-		return result
+		return cloneGeodataCategories(s.geodataCache.result)
 	}
-	s.geodataMu.Unlock()
 
 	result := buildGeodataCategories(entries)
-
-	s.geodataMu.Lock()
 	s.geodataCache = &geodataCategoryCache{fingerprint: fingerprint, result: result}
-	s.geodataMu.Unlock()
+	return cloneGeodataCategories(result)
+}
 
-	return result
+// cloneGeodataCategories returns a copy whose slices don't alias the
+// cache's own, so a caller mutating (e.g. sorting, appending to) its result
+// can never corrupt what other goroutines read from the shared cache.
+func cloneGeodataCategories(c GeodataCategories) GeodataCategories {
+	return GeodataCategories{Domain: slices.Clone(c.Domain), IP: slices.Clone(c.IP)}
 }
 
 // scanGeodataFiles lists dir for files matched by name: geosite*.dat parses
@@ -195,47 +220,101 @@ func buildGeodataCategories(entries []geodataFileEntry) GeodataCategories {
 	return result
 }
 
-// parseGeodataFile fully unmarshals one geosite*/geoip*.dat file and returns
-// every category Code it contains. xray-core's own loaders (loadSite/loadIP
-// in common/geodata/geodat_loader.go) stream a single named category out of
-// a file via an unexported, custom varint-prefixed scanner; enumerating
-// *every* category instead needs a full-file proto.Unmarshal into the
-// package's exported GeoSiteList/GeoIPList message types.
+// parseGeodataFile returns every category Code found in one geosite*/geoip*.dat
+// file. xray-core's own loaders (loadSite/loadIP in
+// common/geodata/geodat_loader.go) stream a single named category out of a
+// file via an unexported, custom varint-prefixed scanner; enumerating
+// *every* category here instead walks the raw protobuf wire format directly
+// via codesFromGeodataList rather than a full proto.Unmarshal, since the
+// only field ever read is each entry's Code -- a full unmarshal would also
+// materialize every Domain/CIDR message the file contains (the bulk of a
+// real geoip.dat/geosite.dat's size) just to throw it away unused.
 func parseGeodataFile(entry geodataFileEntry) ([]string, error) {
-	data, err := os.ReadFile(entry.path)
+	geodataParseCalls.Add(1)
+
+	f, err := os.Open(entry.path)
 	if err != nil {
 		return nil, err
 	}
+	defer f.Close()
+
+	data, err := io.ReadAll(io.LimitReader(f, maxGeodataFileSize+1))
+	if err != nil {
+		return nil, err
+	}
+	if len(data) > maxGeodataFileSize {
+		return nil, fmt.Errorf("file exceeds %d byte limit", maxGeodataFileSize)
+	}
 
 	switch entry.kind {
-	case geositeFile:
-		var list geodata.GeoSiteList
-		if err := proto.Unmarshal(data, &list); err != nil {
-			return nil, err
-		}
-		codes := make([]string, 0, len(list.GetEntry()))
-		for _, site := range list.GetEntry() {
-			if code := site.GetCode(); code != "" {
-				codes = append(codes, code)
-			}
-		}
-		return codes, nil
-	case geoipFile:
-		var list geodata.GeoIPList
-		if err := proto.Unmarshal(data, &list); err != nil {
-			return nil, err
-		}
-		codes := make([]string, 0, len(list.GetEntry()))
-		for _, ip := range list.GetEntry() {
-			if code := ip.GetCode(); code != "" {
-				codes = append(codes, code)
-			}
-		}
-		return codes, nil
+	case geositeFile, geoipFile:
+		return codesFromGeodataList(data)
 	}
 	return nil, nil
 }
 
+// codesFromGeodataList extracts every entry's Code from a serialized
+// GeoSiteList or GeoIPList without unmarshaling into either message type.
+// Both list messages put their repeated "entry" on field 1, and both
+// GeoSite and GeoIP put "code" on field 1 of that entry (see
+// common/geodata/geodat.proto) -- so every other field, including the
+// repeated Domain/CIDR payloads that make up nearly all of a real file's
+// size, is skipped via protowire.ConsumeFieldValue without ever being
+// decoded into an allocated message.
+func codesFromGeodataList(data []byte) ([]string, error) {
+	var codes []string
+	for len(data) > 0 {
+		num, typ, n := protowire.ConsumeTag(data)
+		if n < 0 {
+			return nil, protowire.ParseError(n)
+		}
+		data = data[n:]
+		if num != 1 || typ != protowire.BytesType {
+			m := protowire.ConsumeFieldValue(num, typ, data)
+			if m < 0 {
+				return nil, protowire.ParseError(m)
+			}
+			data = data[m:]
+			continue
+		}
+		entry, m := protowire.ConsumeBytes(data)
+		if m < 0 {
+			return nil, protowire.ParseError(m)
+		}
+		data = data[m:]
+		if code, ok := geodataEntryCode(entry); ok && code != "" {
+			codes = append(codes, code)
+		}
+	}
+	return codes, nil
+}
+
+// geodataEntryCode returns field 1 (GeoSite.code / GeoIP.code, both plain
+// proto3 strings) of one serialized entry submessage.
+func geodataEntryCode(data []byte) (string, bool) {
+	for len(data) > 0 {
+		num, typ, n := protowire.ConsumeTag(data)
+		if n < 0 {
+			return "", false
+		}
+		data = data[n:]
+		if num != 1 || typ != protowire.BytesType {
+			m := protowire.ConsumeFieldValue(num, typ, data)
+			if m < 0 {
+				return "", false
+			}
+			data = data[m:]
+			continue
+		}
+		value, m := protowire.ConsumeBytes(data)
+		if m < 0 {
+			return "", false
+		}
+		return string(value), true
+	}
+	return "", false
+}
+
 // formatGeodataSuggestion builds the exact rule value xray-core's rule
 // parser (common/geodata/rule_parser.go) accepts for one category code from
 // one file. The default file gets the short "geosite:"/"geoip:" form; every
@@ -248,11 +327,11 @@ func formatGeodataSuggestion(entry geodataFileEntry, code string) string {
 	lowerCode := strings.ToLower(code)
 	switch entry.kind {
 	case geositeFile:
-		if entry.name == geodata.DefaultGeoSiteDat {
+		if strings.EqualFold(entry.name, geodata.DefaultGeoSiteDat) {
 			return "geosite:" + lowerCode
 		}
 	case geoipFile:
-		if entry.name == geodata.DefaultGeoIPDat {
+		if strings.EqualFold(entry.name, geodata.DefaultGeoIPDat) {
 			return "geoip:" + lowerCode
 		}
 	}

internal/web/service/xray_setting_geodata_test.go

@@ -119,6 +119,28 @@ func TestParseGeodataFile(t *testing.T) {
 	}
 }
 
+func TestParseGeodataFileRejectsOversizedFile(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "geosite.dat")
+	// Sparse-write a file one byte past the cap without actually holding
+	// maxGeodataFileSize+1 bytes of valid protobuf in memory for the test.
+	f, err := os.Create(path)
+	if err != nil {
+		t.Fatalf("create fixture: %v", err)
+	}
+	if err := f.Truncate(maxGeodataFileSize + 1); err != nil {
+		t.Fatalf("truncate fixture to %d bytes: %v", maxGeodataFileSize+1, err)
+	}
+	if err := f.Close(); err != nil {
+		t.Fatalf("close fixture: %v", err)
+	}
+
+	_, err = parseGeodataFile(geodataFileEntry{name: "geosite.dat", path: path, kind: geositeFile})
+	if err == nil {
+		t.Fatal("expected parseGeodataFile to reject a file over the size limit, got nil error")
+	}
+}
+
 func TestFormatGeodataSuggestion(t *testing.T) {
 	tests := []struct {
 		name string
@@ -130,12 +152,20 @@ func TestFormatGeodataSuggestion(t *testing.T) {
 		{name: "geoip.dat", kind: geoipFile, code: "PRIVATE", want: "geoip:private"},
 		{name: "geosite_roscom.dat", kind: geositeFile, code: "SOME-CODE", want: "ext:geosite_roscom.dat:some-code"},
 		{name: "geoip_rosip.dat", kind: geoipFile, code: "RU", want: "ext:geoip_rosip.dat:ru"},
+		// Default filenames are matched case-insensitively, same as
+		// scanGeodataFiles -- a file that IS the default one on a
+		// case-insensitive filesystem (e.g. Windows) must still get the
+		// short geosite:/geoip: form, not ext:.
+		{name: "GEOSITE.DAT", kind: geositeFile, code: "CN", want: "geosite:cn"},
+		{name: "GeoIP.dat", kind: geoipFile, code: "PRIVATE", want: "geoip:private"},
 	}
 	for _, tt := range tests {
-		entry := geodataFileEntry{name: tt.name, kind: tt.kind}
-		if got := formatGeodataSuggestion(entry, tt.code); got != tt.want {
-			t.Errorf("formatGeodataSuggestion(%q, %q) = %q, want %q", tt.name, tt.code, got, tt.want)
-		}
+		t.Run(tt.name, func(t *testing.T) {
+			entry := geodataFileEntry{name: tt.name, kind: tt.kind}
+			if got := formatGeodataSuggestion(entry, tt.code); got != tt.want {
+				t.Errorf("formatGeodataSuggestion(%q, %q) = %q, want %q", tt.name, tt.code, got, tt.want)
+			}
+		})
 	}
 }
 
@@ -144,29 +174,34 @@ func TestGeodataFingerprintOf(t *testing.T) {
 		{name: "geoip.dat", size: 100, modTime: time.Unix(1, 0)},
 		{name: "geosite.dat", size: 200, modTime: time.Unix(2, 0)},
 	}
-	b := []geodataFileEntry{ // same content, different order
-		{name: "geosite.dat", size: 200, modTime: time.Unix(2, 0)},
-		{name: "geoip.dat", size: 100, modTime: time.Unix(1, 0)},
-	}
-	if !slices.Equal(geodataFingerprintOf(a), geodataFingerprintOf(b)) {
-		t.Fatal("fingerprints should be equal regardless of input order")
-	}
 
-	c := []geodataFileEntry{
-		{name: "geoip.dat", size: 999, modTime: time.Unix(1, 0)}, // size changed
-		{name: "geosite.dat", size: 200, modTime: time.Unix(2, 0)},
-	}
-	if slices.Equal(geodataFingerprintOf(a), geodataFingerprintOf(c)) {
-		t.Fatal("fingerprints should differ when a file's size changes")
-	}
+	t.Run("order independent", func(t *testing.T) {
+		b := []geodataFileEntry{ // same content, different order
+			{name: "geosite.dat", size: 200, modTime: time.Unix(2, 0)},
+			{name: "geoip.dat", size: 100, modTime: time.Unix(1, 0)},
+		}
+		if !slices.Equal(geodataFingerprintOf(a), geodataFingerprintOf(b)) {
+			t.Fatal("fingerprints should be equal regardless of input order")
+		}
+	})
+
+	t.Run("size change invalidates", func(t *testing.T) {
+		c := []geodataFileEntry{
+			{name: "geoip.dat", size: 999, modTime: time.Unix(1, 0)}, // size changed
+			{name: "geosite.dat", size: 200, modTime: time.Unix(2, 0)},
+		}
+		if slices.Equal(geodataFingerprintOf(a), geodataFingerprintOf(c)) {
+			t.Fatal("fingerprints should differ when a file's size changes")
+		}
+	})
 }
 
 func TestGetGeodataCategories_SkipsMalformedFile(t *testing.T) {
 	dir := t.TempDir()
 	writeGeoSiteFixture(t, dir, "geosite.dat", "CN")
 	// An unterminated varint (continuation bit set on every byte) is
-	// guaranteed to fail proto.Unmarshal, unlike an arbitrary text string
-	// which might accidentally parse as protobuf garbage.
+	// guaranteed to fail parsing, unlike an arbitrary text string which
+	// might accidentally parse as protobuf garbage.
 	if err := os.WriteFile(filepath.Join(dir, "geosite_broken.dat"), []byte{0xFF, 0xFF, 0xFF}, 0o644); err != nil {
 		t.Fatalf("write broken fixture: %v", err)
 	}
@@ -174,8 +209,13 @@ func TestGetGeodataCategories_SkipsMalformedFile(t *testing.T) {
 	entries := scanGeodataFiles(dir)
 	result := buildGeodataCategories(entries)
 
-	if !slices.Contains(result.Domain, "geosite:cn") {
-		t.Fatalf("expected the valid file's category to survive, got %v", result.Domain)
+	// Exact equality, not just Contains: a regression that made the broken
+	// file emit junk suggestions alongside the good one must fail this.
+	if !slices.Equal(result.Domain, []string{"geosite:cn"}) {
+		t.Fatalf("result.Domain = %v, want [geosite:cn]", result.Domain)
+	}
+	if len(result.IP) != 0 {
+		t.Fatalf("result.IP = %v, want empty", result.IP)
 	}
 }
 
@@ -193,20 +233,62 @@ func TestGetGeodataCategories_EndToEnd(t *testing.T) {
 	svc := &XraySettingService{}
 	result := svc.GetGeodataCategories()
 
-	if !slices.Contains(result.Domain, "geosite:cn") {
-		t.Errorf("Domain = %v, want to contain geosite:cn", result.Domain)
+	wantDomain := []string{"ext:geosite_roscom.dat:some-code", "geosite:cn"}
+	if !slices.Equal(result.Domain, wantDomain) {
+		t.Errorf("Domain = %v, want %v", result.Domain, wantDomain)
 	}
-	if !slices.Contains(result.Domain, "ext:geosite_roscom.dat:some-code") {
-		t.Errorf("Domain = %v, want to contain ext:geosite_roscom.dat:some-code", result.Domain)
-	}
-	if !slices.Contains(result.IP, "geoip:private") {
-		t.Errorf("IP = %v, want to contain geoip:private", result.IP)
+	if !slices.Equal(result.IP, []string{"geoip:private"}) {
+		t.Errorf("IP = %v, want [geoip:private]", result.IP)
 	}
 
 	// Cache must reflect a file that appears after the first call.
 	writeGeoIPFixture(t, dir, "geoip_rosip.dat", "RU")
 	result = svc.GetGeodataCategories()
-	if !slices.Contains(result.IP, "ext:geoip_rosip.dat:ru") {
-		t.Errorf("IP after adding a new file = %v, want to contain ext:geoip_rosip.dat:ru", result.IP)
+	wantIP := []string{"ext:geoip_rosip.dat:ru", "geoip:private"}
+	if !slices.Equal(result.IP, wantIP) {
+		t.Errorf("IP after adding a new file = %v, want %v", result.IP, wantIP)
+	}
+}
+
+func TestGetGeodataCategories_CacheHitSkipsReparse(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("XUI_BIN_FOLDER", dir)
+	writeGeoSiteFixture(t, dir, "geosite.dat", "CN")
+	writeGeoIPFixture(t, dir, "geoip.dat", "PRIVATE")
+
+	svc := &XraySettingService{}
+
+	before := geodataParseCalls.Load()
+	first := svc.GetGeodataCategories()
+	afterFirst := geodataParseCalls.Load()
+	if afterFirst == before {
+		t.Fatal("expected the first call (a cache miss) to parse at least one file")
+	}
+
+	second := svc.GetGeodataCategories()
+	afterSecond := geodataParseCalls.Load()
+	if afterSecond != afterFirst {
+		t.Fatalf("expected a second call with an unchanged fingerprint to skip re-parsing entirely, but the parse count went from %d to %d", afterFirst, afterSecond)
+	}
+	if !slices.Equal(first.Domain, second.Domain) || !slices.Equal(first.IP, second.IP) {
+		t.Fatalf("cached result differs from the original: first=%+v second=%+v", first, second)
+	}
+}
+
+func TestGetGeodataCategories_ReturnsIndependentSlices(t *testing.T) {
+	// The cache must never hand out its own backing array: a caller that
+	// mutates its result (e.g. sorts or appends to it) must not corrupt what
+	// other callers read from the shared cache on their next call.
+	dir := t.TempDir()
+	t.Setenv("XUI_BIN_FOLDER", dir)
+	writeGeoSiteFixture(t, dir, "geosite.dat", "CN", "YOUTUBE")
+
+	svc := &XraySettingService{}
+	first := svc.GetGeodataCategories()
+	first.Domain[0] = "tampered"
+
+	second := svc.GetGeodataCategories()
+	if slices.Contains(second.Domain, "tampered") {
+		t.Fatalf("mutating one caller's result leaked into the cache: %v", second.Domain)
 	}
 }

tools/openapigen/main.go

@@ -82,6 +82,7 @@ func run(root, outDir string) error {
 				"NodeView",
 				"ProbeResultUI",
 				"RealityScanResult",
+				"GeodataCategories",
 			),
 		},
 		{