feat(config): publicSiteUrl for same-origin media refs; copy uses it

Made-with: Cursor

app/composables/useGlobalConfig.ts

@@ -3,6 +3,8 @@ import { request, unwrapApiBody, type ApiResponse } from '../utils/http/factory'
 export type GlobalConfig = {
   siteName: string
   allowRegister: boolean
+  /** 与后台「站点对外地址」一致；空表示未配置 */
+  publicSiteUrl: string
 }
 
 type GlobalConfigResult = {
@@ -12,6 +14,7 @@ type GlobalConfigResult = {
 const DEFAULT_GLOBAL_CONFIG: GlobalConfig = {
   siteName: 'Person Panel',
   allowRegister: true,
+  publicSiteUrl: '',
 }
 
 export function useGlobalConfig() {

app/pages/me/admin/config/index.vue

@@ -7,6 +7,7 @@ type GlobalConfigPayload = {
   config: {
     siteName: string
     allowRegister: boolean
+    publicSiteUrl: string
     mediaOrphanAutoSweepEnabled: boolean
     mediaOrphanAutoSweepIntervalMinutes: number
   }
@@ -21,6 +22,7 @@ const loading = ref(true)
 const saving = ref(false)
 const siteName = ref('')
 const allowRegister = ref(true)
+const publicSiteUrl = ref('')
 const mediaOrphanAutoSweepEnabled = ref(false)
 const mediaOrphanAutoSweepIntervalMinutes = ref(60)
 
@@ -37,6 +39,7 @@ async function load() {
     const { config: cfg } = await fetchData<GlobalConfigPayload>('/api/config/global')
     siteName.value = cfg.siteName
     allowRegister.value = cfg.allowRegister
+    publicSiteUrl.value = typeof cfg.publicSiteUrl === 'string' ? cfg.publicSiteUrl : ''
     mediaOrphanAutoSweepEnabled.value = cfg.mediaOrphanAutoSweepEnabled
     mediaOrphanAutoSweepIntervalMinutes.value = cfg.mediaOrphanAutoSweepIntervalMinutes
   } finally {
@@ -61,6 +64,7 @@ async function save() {
   try {
     await putKey('siteName', siteName.value.trim())
     await putKey('allowRegister', allowRegister.value)
+    await putKey('publicSiteUrl', publicSiteUrl.value.trim())
     await putKey('mediaOrphanAutoSweepEnabled', mediaOrphanAutoSweepEnabled.value)
     await putKey('mediaOrphanAutoSweepIntervalMinutes', mediaOrphanAutoSweepIntervalMinutes.value)
     await load()
@@ -78,7 +82,7 @@ async function save() {
       应用配置
     </h1>
     <p class="text-sm text-muted">
-      全局设置：站点名称、开放注册与媒体孤儿自动清扫。
+      全局设置：站点名称、对外访问地址、开放注册与媒体孤儿自动清扫。
     </p>
 
     <UCard>
@@ -99,6 +103,12 @@ async function save() {
           <UCheckbox v-model="allowRegister" label="开启" />
         </UFormField>
         <UFormField
+          label="站点对外地址"
+          description="含协议的站点根 URL（如 https://blog.example.com）。用于识别文章/资料里以绝对地址引用的本站 /public/assets/ 图片并计入媒体引用；留空则仅识别相对路径 /public/assets/...。"
+        >
+          <UInput v-model="publicSiteUrl" maxlength="256" placeholder="https://…" />
+        </UFormField>
+        <UFormField
           label="媒体孤儿自动清扫"
           description="全站生效、仅删除已过宽限期且无引用的图片、建议先在「图片孤儿审查」确认。"
         >

app/pages/me/media/index.vue

@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { useAuthSession } from '../../../composables/useAuthSession'
+import { useGlobalConfig } from '../../../composables/useGlobalConfig'
 
 definePageMeta({ title: '媒体库' })
 
@@ -15,8 +16,22 @@ type MediaAssetRow = {
 
 const toast = useToast()
 const { refresh: refreshAuth } = useAuthSession()
+const { config, refresh: refreshGlobalConfig } = useGlobalConfig()
 const { fetchData, getApiErrorMessage } = useClientApi()
 
+/** 与全局「站点对外地址」一致时复制出的绝对链接才会被服务端计入引用；未配置则退回当前页 origin。 */
+function resolveCopyOrigin(): string {
+  const raw = config.value.publicSiteUrl?.trim() ?? ''
+  if (raw) {
+    try {
+      return new URL(raw).origin
+    } catch {
+      /* 使用 window */
+    }
+  }
+  return typeof window !== 'undefined' ? window.location.origin : ''
+}
+
 const page = ref(1)
 const pageSize = ref(20)
 const items = ref<MediaAssetRow[]>([])
@@ -77,9 +92,10 @@ watch([page, pageSize], () => {
   void load()
 })
 
-onMounted(() => {
-  void refreshAuth(true)
-  void load()
+onMounted(async () => {
+  await refreshAuth(true)
+  await refreshGlobalConfig()
+  await load()
 })
 
 function openFilePicker() {
@@ -121,7 +137,7 @@ async function copyUrl(item: MediaAssetRow) {
   if (!import.meta.client) {
     return
   }
-  const absoluteUrl = `${window.location.origin}${item.publicPath}`
+  const absoluteUrl = `${resolveCopyOrigin()}${item.publicPath}`
   try {
     await navigator.clipboard.writeText(absoluteUrl)
     toast.add({ title: '已复制 URL', color: 'success' })
@@ -134,7 +150,7 @@ async function copyMarkdown(item: MediaAssetRow) {
   if (!import.meta.client) {
     return
   }
-  const absoluteUrl = `${window.location.origin}${item.publicPath}`
+  const absoluteUrl = `${resolveCopyOrigin()}${item.publicPath}`
   const md = `![](${absoluteUrl})`
   try {
     await navigator.clipboard.writeText(md)

server/service/config/registry.ts

@@ -31,6 +31,32 @@ const CONFIG_REGISTRY = {
     defaultValue: true,
     userOverridable: false,
   }),
+  /**
+   * 站点对外访问根地址（含协议与域名，可带端口），用于识别 Markdown/封面中的绝对图片链接是否为本站资源。
+   * 留空则仅接受以 `/public/assets/` 开头的相对路径。
+   */
+  publicSiteUrl: defineConfig<string>({
+    key: "publicSiteUrl",
+    scope: "global",
+    valueType: "string",
+    defaultValue: "",
+    userOverridable: false,
+    validate: (value: string) => {
+      const t = value.trim();
+      if (!t) {
+        return true;
+      }
+      if (t.length > 256) {
+        return false;
+      }
+      try {
+        const u = new URL(t);
+        return (u.protocol === "http:" || u.protocol === "https:") && Boolean(u.host);
+      } catch {
+        return false;
+      }
+    },
+  }),
   mediaOrphanAutoSweepEnabled: defineConfig<boolean>({
     key: "mediaOrphanAutoSweepEnabled",
     scope: "global",

server/service/media/index.ts

@@ -10,6 +10,7 @@ import {
   RELATIVE_ASSETS_DIR,
 } from "#server/constants/media";
 import { MEDIA_REF_OWNER_POST, MEDIA_REF_OWNER_PROFILE } from "#server/constants/media-refs";
+import { getGlobalConfigValue } from "#server/service/config";
 import { mergePostMediaUrls, mergeProfileMediaUrls, publicAssetUrlToStorageKey } from "#server/utils/post-media-urls";
 import { nextIntegerId } from "#server/utils/sqlite-id";
 
@@ -183,6 +184,22 @@ export async function reconcileAssetTimestampsAfterRefChange(assetIds: number[])
   }
 }
 
+async function allowedAssetOriginsForRefs(): Promise<string[]> {
+  const raw = String(await getGlobalConfigValue("publicSiteUrl")).trim();
+  if (!raw) {
+    return [];
+  }
+  try {
+    const u = new URL(raw);
+    if (u.protocol !== "http:" && u.protocol !== "https:") {
+      return [];
+    }
+    return [u.origin];
+  } catch {
+    return [];
+  }
+}
+
 export async function syncPostMediaRefs(
   userId: number,
   postId: number,
@@ -195,7 +212,8 @@ export async function syncPostMediaRefs(
 
   await dbGlobal.delete(mediaRefs).where(postRef);
 
-  const urls = mergePostMediaUrls(bodyMarkdown, coverUrl);
+  const allowedOrigins = await allowedAssetOriginsForRefs();
+  const urls = mergePostMediaUrls(bodyMarkdown, coverUrl, { allowedAssetOrigins: allowedOrigins });
   const keys = [...new Set(urls.map((u) => publicAssetUrlToStorageKey(u)).filter((k): k is string => k != null))];
 
   let afterIds: number[] = [];
@@ -233,7 +251,8 @@ export async function syncProfileMediaRefs(
 
   await dbGlobal.delete(mediaRefs).where(profileRef);
 
-  const urls = mergeProfileMediaUrls(bioMarkdown, avatar);
+  const allowedOrigins = await allowedAssetOriginsForRefs();
+  const urls = mergeProfileMediaUrls(bioMarkdown, avatar, { allowedAssetOrigins: allowedOrigins });
   const keys = [...new Set(urls.map((u) => publicAssetUrlToStorageKey(u)).filter((k): k is string => k != null))];
 
   let afterIds: number[] = [];

server/utils/post-media-urls.test.ts

@@ -2,28 +2,48 @@ import { describe, expect, test } from "bun:test";
 import { extractMediaUrlsFromMarkdown, publicAssetUrlToStorageKey } from "./post-media-urls";
 
 describe("extractMediaUrlsFromMarkdown", () => {
-  test("accepts site-relative /public/assets/ URL", () => {
+  test("accepts site-relative /public/assets/ URL without allowed origins", () => {
     expect(extractMediaUrlsFromMarkdown("![](/public/assets/a.webp)")).toEqual(["/public/assets/a.webp"]);
   });
 
-  test("accepts absolute URL with same path and normalizes to relative", () => {
+  test("rejects absolute URL when no allowed origins", () => {
+    expect(extractMediaUrlsFromMarkdown("![](https://blog.example.com/public/assets/b.webp)")).toEqual([]);
+  });
+
+  test("accepts absolute URL when origin matches allowed list", () => {
     expect(
-      extractMediaUrlsFromMarkdown("![](https://blog.example.com/public/assets/b.webp)"),
+      extractMediaUrlsFromMarkdown("![](https://blog.example.com/public/assets/b.webp)", {
+        allowedAssetOrigins: ["https://blog.example.com"],
+      }),
     ).toEqual(["/public/assets/b.webp"]);
   });
 
+  test("rejects absolute URL when origin does not match", () => {
+    expect(
+      extractMediaUrlsFromMarkdown("![](https://evil.example/public/assets/b.webp)", {
+        allowedAssetOrigins: ["https://blog.example.com"],
+      }),
+    ).toEqual([]);
+  });
+
   test("strips query on relative asset URL", () => {
     expect(extractMediaUrlsFromMarkdown("![](/public/assets/c.webp?v=1)")).toEqual(["/public/assets/c.webp"]);
   });
 
   test("strips query on absolute asset URL via pathname", () => {
     expect(
-      extractMediaUrlsFromMarkdown("![](https://x.example/public/assets/d.webp?cache=1)"),
+      extractMediaUrlsFromMarkdown("![](https://x.example/public/assets/d.webp?cache=1)", {
+        allowedAssetOrigins: ["https://x.example"],
+      }),
     ).toEqual(["/public/assets/d.webp"]);
   });
 
   test("ignores non-asset absolute URLs", () => {
-    expect(extractMediaUrlsFromMarkdown("![](https://evil.com/other.png)")).toEqual([]);
+    expect(
+      extractMediaUrlsFromMarkdown("![](https://evil.com/other.png)", {
+        allowedAssetOrigins: ["https://evil.com"],
+      }),
+    ).toEqual([]);
   });
 });
 

server/utils/post-media-urls.ts

@@ -2,18 +2,51 @@ import { POST_MEDIA_PUBLIC_PREFIX } from "../constants/media";
 
 const MD_IMG_RE = /!\[[^\]]*]\(([^)]+)\)/g;
 
+export type MergePostMediaUrlsOptions = {
+  /**
+   * 允许识别为「本站绝对地址」的 origin 列表（每项可为完整 URL，仅取其 `origin` 参与匹配）。
+   * 为空时：不将含域名的绝对 URL 计为本站资源（仅 `/public/assets/...` 相对路径有效）。
+   */
+  allowedAssetOrigins?: readonly string[];
+};
+
 function stripQueryHash(path: string): string {
   return path.split("?")[0]?.split("#")[0] ?? path;
 }
 
+function buildAllowedOriginSet(entries: readonly string[] | undefined): Set<string> {
+  const s = new Set<string>();
+  if (!entries?.length) {
+    return s;
+  }
+  for (const e of entries) {
+    const t = e.trim();
+    if (!t) {
+      continue;
+    }
+    try {
+      s.add(new URL(t).origin);
+    } catch {
+      /* skip */
+    }
+  }
+  return s;
+}
+
 /** 统一为 `/public/assets/<key>`，供 `publicAssetUrlToStorageKey` 与引用同步使用。 */
-function normalizeUrl(raw: string): string {
+function normalizeUrl(raw: string, allowedOrigins: Set<string>): string {
   const t = raw.trim().replace(/^<|>$/g, "").split(/\s+/)[0] ?? "";
   if (t.startsWith(POST_MEDIA_PUBLIC_PREFIX)) {
     return stripQueryHash(t);
   }
+  if (allowedOrigins.size === 0) {
+    return "";
+  }
   try {
     const u = new URL(t);
+    if (!allowedOrigins.has(u.origin)) {
+      return "";
+    }
     const path = stripQueryHash(u.pathname);
     if (path.startsWith(POST_MEDIA_PUBLIC_PREFIX)) {
       return path;
@@ -25,13 +58,14 @@ function normalizeUrl(raw: string): string {
 }
 
 /** 从 markdown 中提取本站图片 URL（去重，顺序稳定） */
-export function extractMediaUrlsFromMarkdown(markdown: string): string[] {
+export function extractMediaUrlsFromMarkdown(markdown: string, options?: MergePostMediaUrlsOptions): string[] {
+  const allowed = buildAllowedOriginSet(options?.allowedAssetOrigins);
   const out: string[] = [];
   const seen = new Set<string>();
   let m: RegExpExecArray | null;
   const re = new RegExp(MD_IMG_RE.source, MD_IMG_RE.flags);
   while ((m = re.exec(markdown)) !== null) {
-    const u = normalizeUrl(m[1] ?? "");
+    const u = normalizeUrl(m[1] ?? "", allowed);
     if (u && !seen.has(u)) {
       seen.add(u);
       out.push(u);
@@ -40,17 +74,25 @@ export function extractMediaUrlsFromMarkdown(markdown: string): string[] {
   return out;
 }
 
-export function extractMediaUrlsFromCover(coverUrl: string | null | undefined): string[] {
+export function extractMediaUrlsFromCover(
+  coverUrl: string | null | undefined,
+  options?: MergePostMediaUrlsOptions,
+): string[] {
   if (!coverUrl) {
     return [];
   }
-  const u = normalizeUrl(coverUrl);
+  const allowed = buildAllowedOriginSet(options?.allowedAssetOrigins);
+  const u = normalizeUrl(coverUrl, allowed);
   return u ? [u] : [];
 }
 
-export function mergePostMediaUrls(bodyMarkdown: string, coverUrl: string | null | undefined): string[] {
-  const a = extractMediaUrlsFromMarkdown(bodyMarkdown);
-  const b = extractMediaUrlsFromCover(coverUrl);
+export function mergePostMediaUrls(
+  bodyMarkdown: string,
+  coverUrl: string | null | undefined,
+  options?: MergePostMediaUrlsOptions,
+): string[] {
+  const a = extractMediaUrlsFromMarkdown(bodyMarkdown, options);
+  const b = extractMediaUrlsFromCover(coverUrl, options);
   const seen = new Set<string>(a);
   for (const u of b) {
     if (!seen.has(u)) {
@@ -61,8 +103,12 @@ export function mergePostMediaUrls(bodyMarkdown: string, coverUrl: string | null
   return a;
 }
 
-export function mergeProfileMediaUrls(bioMarkdown: string | null | undefined, avatar: string | null | undefined): string[] {
-  return mergePostMediaUrls(bioMarkdown ?? "", avatar ?? null);
+export function mergeProfileMediaUrls(
+  bioMarkdown: string | null | undefined,
+  avatar: string | null | undefined,
+  options?: MergePostMediaUrlsOptions,
+): string[] {
+  return mergePostMediaUrls(bioMarkdown ?? "", avatar ?? null, options);
 }
 
 /** `/public/assets/foo.webp` → `foo.webp` */