refactor: publish local client from Gitea release

Dockerfile

@@ -6,23 +6,11 @@ COPY *.go ./
 COPY web ./web
 RUN go test ./... \
  && go vet ./... \
- && mkdir -p /out/download \
+ && CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o /out/lrc-local .
- && CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o /out/download/lrc-local-windows-amd64.exe . \
- && CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o /out/download/lrc-local-linux-amd64 . \
- && cp /out/download/lrc-local-linux-amd64 /out/lrc-local-server \
- && CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o /out/download/lrc-local-darwin-arm64 . \
- && CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o /out/download/lrc-local-darwin-amd64 . \
- && cd /out/download \
- && tar -czf lrc-local-linux-amd64.tar.gz lrc-local-linux-amd64 \
- && tar -czf lrc-local-darwin-arm64.tar.gz lrc-local-darwin-arm64 \
- && tar -czf lrc-local-darwin-amd64.tar.gz lrc-local-darwin-amd64 \
- && rm lrc-local-linux-amd64 lrc-local-darwin-arm64 lrc-local-darwin-amd64 \
- && sha256sum lrc-local-* > SHA256SUMS
 
 FROM scratch
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY --from=builder /out/lrc-local-server /lrc-local
+COPY --from=builder /out/lrc-local /lrc-local
-COPY --from=builder /out/download /srv/download
 USER 65534:65534
 EXPOSE 8080
-ENTRYPOINT ["/lrc-local", "--public", "--listen", "0.0.0.0:8080", "--origin", "https://lrc.flechazo.xin", "--downloads", "/srv/download"]
+ENTRYPOINT ["/lrc-local", "--public", "--listen", "0.0.0.0:8080", "--origin", "https://lrc.flechazo.xin"]

README.md

@@ -1,6 +1,6 @@
 # LRC Local
 
-一个可直接在网页使用、也提供可选本机版的 QQ 音乐歌词搜索与导出工具，使用 Go 编写。
+`lrc.flechazo.xin` 的 Go 网页服务。
 
 网页：<https://lrc.flechazo.xin>
 
@@ -11,7 +11,8 @@
 - 导出原文 LRC/TXT；有真实翻译时才提供翻译 LRC/TXT，有罗马音、韩语音译或方言注音时才提供“音” LRC/TXT。
 - 歌词来自 QQ 音乐 `GetPlayLyricInfo` 返回的原文、翻译与 `roma` 字段；本站不进行机器翻译，也不自行生成注音。
 - 网页版只转发到源码中固定的 QQ 音乐接口，不保存搜索词、歌词或历史。
-- 可选本机版只监听随机的 `127.0.0.1` 端口。
+- 可选本机版已迁移到独立的 Windows C 仓库：<https://git.sighs.cc/Flechazo/lrc-local-win>。
+- 主站下载入口直接指向该仓库的 Gitea Release；本仓库不再构建或携带本机版程序。
 
 ## 构建
 

docker-compose.yml

@@ -5,7 +5,7 @@ services:
     build:
       context: .
       args:
-        VERSION: v2026.08.26-r6
+        VERSION: v2026.08.27-r8
     restart: unless-stopped
     ports:
       - "127.0.0.1:8083:8080"

main.go

@@ -26,7 +26,6 @@ func main() {
 	publicMode := flag.Bool("public", false, "run the public web service")
 	listenAddress := flag.String("listen", "0.0.0.0:8080", "public web service listen address")
 	publicOrigin := flag.String("origin", "https://lrc.flechazo.xin", "allowed public browser origin")
-	downloadDirectory := flag.String("downloads", "", "directory containing optional local-app downloads")
 	healthcheckURL := flag.String("healthcheck", "", "check a running service and exit")
 	showVersion := flag.Bool("version", false, "print version and exit")
 	flag.Parse()
@@ -47,7 +46,7 @@ func main() {
 		return
 	}
 	if *publicMode {
-		runPublic(*listenAddress, *publicOrigin, *downloadDirectory)
+		runPublic(*listenAddress, *publicOrigin)
 		return
 	}
 	runLocal(*noOpen)
@@ -96,7 +95,7 @@ func runLocal(noOpen bool) {
 	}
 }
 
-func runPublic(listenAddress, origin, downloadDirectory string) {
+func runPublic(listenAddress, origin string) {
 	listener, err := net.Listen("tcp4", listenAddress)
 	if err != nil {
 		log.Fatal(err)
@@ -105,7 +104,7 @@ func runPublic(listenAddress, origin, downloadDirectory string) {
 	if err != nil {
 		log.Fatal(err)
 	}
-	app, err := newPublicApp(origin, downloadDirectory, webFS, newQQClient())
+	app, err := newPublicApp(origin, webFS, newQQClient())
 	if err != nil {
 		log.Fatal(err)
 	}

public_server.go

@@ -7,8 +7,6 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"os"
-	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -19,14 +17,6 @@ const (
 	publicGlobalLimit = 300
 )
 
-var publicDownloadNames = map[string]struct{}{
-	"SHA256SUMS":                    {},
-	"lrc-local-windows-amd64.exe":   {},
-	"lrc-local-linux-amd64.tar.gz":  {},
-	"lrc-local-darwin-arm64.tar.gz": {},
-	"lrc-local-darwin-amd64.tar.gz": {},
-}
-
 type rateWindow struct {
 	started time.Time
 	seen    time.Time
@@ -34,25 +24,24 @@ type rateWindow struct {
 }
 
 type publicApp struct {
-	origin      string
+	origin  string
-	host        string
+	host    string
-	downloadDir string
+	web     fs.FS
-	web         fs.FS
+	core    *localApp
-	core        *localApp
+	sem     chan struct{}
-	sem         chan struct{}
+	mu      sync.Mutex
-	mu          sync.Mutex
+	global  rateWindow
-	global      rateWindow
+	clients map[string]rateWindow
-	clients     map[string]rateWindow
 }
 
-func newPublicApp(origin, downloadDir string, web fs.FS, qq qqAPI) (*publicApp, error) {
+func newPublicApp(origin string, web fs.FS, qq qqAPI) (*publicApp, error) {
 	parsed, err := url.Parse(origin)
 	if err != nil || parsed.Scheme != "https" || parsed.Host == "" || parsed.Path != "" {
 		return nil, errors.New("public origin must be an HTTPS origin without a path")
 	}
 	now := time.Now()
 	return &publicApp{
-		origin: origin, host: parsed.Host, downloadDir: downloadDir, web: web,
+		origin: origin, host: parsed.Host, web: web,
 		core: newApp(origin, "", web, qq), sem: make(chan struct{}, 12),
 		global: rateWindow{started: now, seen: now}, clients: make(map[string]rateWindow),
 	}, nil
@@ -68,7 +57,6 @@ func (a *publicApp) routes() http.Handler {
 	})
 	mux.HandleFunc("POST /api/search", a.withAPI(a.core.search))
 	mux.HandleFunc("POST /api/lyrics", a.withAPI(a.core.lyrics))
-	mux.HandleFunc("GET /download/{name}", a.download)
 	mux.HandleFunc("GET /health", func(w http.ResponseWriter, _ *http.Request) {
 		writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
 	})
@@ -106,28 +94,6 @@ func (a *publicApp) serveFile(w http.ResponseWriter, r *http.Request, name, cont
 	_, _ = w.Write(data)
 }
 
-func (a *publicApp) download(w http.ResponseWriter, r *http.Request) {
-	name := r.PathValue("name")
-	if _, allowed := publicDownloadNames[name]; !allowed || a.downloadDir == "" {
-		http.NotFound(w, r)
-		return
-	}
-	path := filepath.Join(a.downloadDir, name)
-	file, err := os.Open(path)
-	if err != nil {
-		http.NotFound(w, r)
-		return
-	}
-	defer file.Close()
-	info, err := file.Stat()
-	if err != nil || !info.Mode().IsRegular() {
-		http.NotFound(w, r)
-		return
-	}
-	w.Header().Set("Content-Disposition", `attachment; filename="`+name+`"`)
-	http.ServeContent(w, r, name, info.ModTime(), file)
-}
-
 func (a *publicApp) withAPI(next http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		mediaType, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))

public_server_test.go

@@ -3,21 +3,19 @@ package main
 import (
 	"net/http"
 	"net/http/httptest"
-	"os"
-	"path/filepath"
 	"strings"
 	"testing"
 	"testing/fstest"
 )
 
-func newTestPublicApp(t *testing.T, downloads string) (*publicApp, http.Handler) {
+func newTestPublicApp(t *testing.T) (*publicApp, http.Handler) {
 	t.Helper()
 	web := fstest.MapFS{
 		"app.html":   &fstest.MapFile{Data: []byte("public app")},
 		"app.js":     &fstest.MapFile{Data: []byte("js")},
 		"styles.css": &fstest.MapFile{Data: []byte("css")},
 	}
-	app, err := newPublicApp("https://lrc.flechazo.xin", downloads, web, fakeQQ{})
+	app, err := newPublicApp("https://lrc.flechazo.xin", web, fakeQQ{})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -33,7 +31,7 @@ func publicRequest(method, path, body string) *http.Request {
 }
 
 func TestPublicPageNeedsNoSession(t *testing.T) {
-	_, handler := newTestPublicApp(t, "")
+	_, handler := newTestPublicApp(t)
 	w := httptest.NewRecorder()
 	handler.ServeHTTP(w, publicRequest(http.MethodGet, "/", ""))
 	if w.Code != http.StatusOK || w.Body.String() != "public app" {
@@ -45,7 +43,7 @@ func TestPublicPageNeedsNoSession(t *testing.T) {
 }
 
 func TestPublicAPIRejectsWrongOrigin(t *testing.T) {
-	_, handler := newTestPublicApp(t, "")
+	_, handler := newTestPublicApp(t)
 	request := publicRequest(http.MethodPost, "/api/search", `{"keyword":"test","limit":2}`)
 	request.Header.Set("Origin", "https://attacker.example")
 	w := httptest.NewRecorder()
@@ -56,7 +54,7 @@ func TestPublicAPIRejectsWrongOrigin(t *testing.T) {
 }
 
 func TestPublicSearchWorksWithoutCookie(t *testing.T) {
-	_, handler := newTestPublicApp(t, "")
+	_, handler := newTestPublicApp(t)
 	w := httptest.NewRecorder()
 	handler.ServeHTTP(w, publicRequest(http.MethodPost, "/api/search", `{"keyword":"测试","limit":2}`))
 	if w.Code != http.StatusOK || !strings.Contains(w.Body.String(), "测试") {
@@ -65,7 +63,7 @@ func TestPublicSearchWorksWithoutCookie(t *testing.T) {
 }
 
 func TestPublicPerClientRateLimit(t *testing.T) {
-	_, handler := newTestPublicApp(t, "")
+	_, handler := newTestPublicApp(t)
 	for attempt := 1; attempt <= publicClientLimit+1; attempt++ {
 		w := httptest.NewRecorder()
 		handler.ServeHTTP(w, publicRequest(http.MethodPost, "/api/search", `{"keyword":"test","limit":1}`))
@@ -78,33 +76,17 @@ func TestPublicPerClientRateLimit(t *testing.T) {
 	}
 }
 
-func TestPublicDownloadWhitelistAndRange(t *testing.T) {
+func TestPublicDoesNotServeLocalBinaries(t *testing.T) {
-	directory := t.TempDir()
+	_, handler := newTestPublicApp(t)
-	name := "lrc-local-windows-amd64.exe"
-	if err := os.WriteFile(filepath.Join(directory, name), []byte("0123456789"), 0o600); err != nil {
-		t.Fatal(err)
-	}
-	_, handler := newTestPublicApp(t, directory)
-	request := publicRequest(http.MethodGet, "/download/"+name, "")
-	request.Header.Set("Range", "bytes=2-5")
 	w := httptest.NewRecorder()
-	handler.ServeHTTP(w, request)
+	handler.ServeHTTP(w, publicRequest(http.MethodGet, "/download/lrc-local-windows-amd64.exe", ""))
-	if w.Code != http.StatusPartialContent || w.Body.String() != "2345" {
-		t.Fatalf("status=%d body=%q", w.Code, w.Body.String())
-	}
-	if !strings.Contains(w.Header().Get("Content-Disposition"), name) {
-		t.Fatal("download disposition is missing")
-	}
-
-	w = httptest.NewRecorder()
-	handler.ServeHTTP(w, publicRequest(http.MethodGet, "/download/not-allowed", ""))
 	if w.Code != http.StatusNotFound {
-		t.Fatalf("unexpected non-whitelist status %d", w.Code)
+		t.Fatalf("expected removed local download route to return 404, got %d", w.Code)
 	}
 }
 
 func TestPublicOriginConfigurationMustUseHTTPS(t *testing.T) {
-	_, err := newPublicApp("http://lrc.flechazo.xin", "", fstest.MapFS{}, fakeQQ{})
+	_, err := newPublicApp("http://lrc.flechazo.xin", fstest.MapFS{}, fakeQQ{})
 	if err == nil {
 		t.Fatal("expected insecure public origin to be rejected")
 	}

web/app.html

@@ -1,46 +1,67 @@
 <!doctype html>
 <html lang="zh-CN">
-<head>
+  <head>
-  <meta charset="utf-8">
+    <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width,initial-scale=1">
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
-  <meta name="description" content="搜索、预览并下载原文、翻译与音歌词。">
+    <meta name="description" content="搜索、预览并下载原文、翻译与音歌词。" />
-  <title>LRC Local</title>
+    <title>LRC Local</title>
-  <link rel="stylesheet" href="/styles.css">
+    <link rel="stylesheet" href="/styles.css" />
-</head>
+  </head>
-<body>
+  <body>
-  <main>
+    <main>
-    <header>
+      <header>
-      <h1>LRC Local</h1>
+        <h1>LRC Local</h1>
-      <a href="https://git.sighs.cc/Flechazo/lrc-local">源码</a>
+        <a href="https://git.sighs.cc/Flechazo/lrc-local">源码</a>
-    </header>
+      </header>
 
-    <p>搜索、完整预览并下载原文、翻译或“音”歌词。翻译与音歌词只在 QQ 音乐提供对应内容时出现。</p>
+      <p>
-    <p id="mode-note" class="note">正在确认运行模式…</p>
+        搜索、完整预览并下载原文、翻译或“音”歌词。翻译与音歌词只在 QQ
+        音乐提供对应内容时出现。
+      </p>
+      <p id="mode-note" class="note">正在确认运行模式…</p>
 
-    <form id="search-form">
+      <form id="search-form">
-      <label for="keyword">歌曲、歌手或专辑</label>
+        <label for="keyword">歌曲、歌手或专辑</label>
-      <div class="search-row">
+        <div class="search-row">
-        <input id="keyword" name="keyword" maxlength="100" autocomplete="off" placeholder="例如：起风了" required autofocus>
+          <input
-        <button type="submit">搜索</button>
+            id="keyword"
-      </div>
+            name="keyword"
-    </form>
+            maxlength="100"
-    <div id="notice" class="notice" role="status" aria-live="polite"></div>
+            autocomplete="off"
-    <section id="results" class="results" aria-label="搜索结果"></section>
+            placeholder="例如：起风了"
+            required
+            autofocus
+          />
+          <button type="submit">搜索</button>
+        </div>
+      </form>
+      <div id="notice" class="notice" role="status" aria-live="polite"></div>
+      <section id="results" class="results" aria-label="搜索结果"></section>
 
-    <section id="local-downloads" class="downloads" hidden>
+      <section id="local-downloads" class="downloads" hidden>
-      <h2>可选：本机版</h2>
+        <h2>可选：本机版</h2>
-      <p>如果不希望查询经过本站，可以下载本机版。它只监听 <code>127.0.0.1</code>，关闭窗口即停止。</p>
+        <p>
-      <div class="download-links">
+          如果不希望查询经过本站，可以下载本机版。它只监听
-        <a href="/download/lrc-local-windows-amd64.exe">Windows 64 位</a>
+          <code>127.0.0.1</code>，关闭窗口即停止。
-        <a href="/download/lrc-local-linux-amd64.tar.gz">Linux x64</a>
+        </p>
-        <a href="/download/lrc-local-darwin-arm64.tar.gz">macOS Apple 芯片</a>
+        <div class="download-links">
-        <a href="/download/lrc-local-darwin-amd64.tar.gz">macOS Intel</a>
+          <a
-        <a href="/download/SHA256SUMS">SHA-256</a>
+            href="https://git.sighs.cc/Flechazo/lrc-local-win/releases/download/v2026.08.27-r1/lrc-local-win-x64.exe"
-      </div>
+            >Windows 64 位</a
-    </section>
+          >
+          <a
+            href="https://git.sighs.cc/Flechazo/lrc-local-win/releases/download/v2026.08.27-r1/SHA256SUMS"
+            >SHA-256</a
+          >
+          <a href="https://git.sighs.cc/Flechazo/lrc-local-win">本机版源码</a>
+        </div>
+      </section>
 
-    <footer>网页版请求由本站转发到固定的 QQ 音乐接口，不保存搜索词、歌词或历史。非 QQ 音乐官方工具，请仅使用你有权访问的内容。</footer>
+      <footer>
-  </main>
+        网页版请求由本站转发到固定的 QQ 音乐接口，不保存搜索词、歌词或历史。非
-  <script src="/app.js" defer></script>
+        QQ 音乐官方工具，请仅使用你有权访问的内容。
-</body>
+      </footer>
+    </main>
+    <script src="/app.js" defer></script>
+  </body>
 </html>

web/app.js

@@ -5,6 +5,16 @@ const results = document.querySelector('#results');
 const modeNote = document.querySelector('#mode-note');
 const localDownloads = document.querySelector('#local-downloads');
 const lyricCache = new Map();
+let publicMode = false;
+
+const downloadEvents = {
+  lrc: 'original-lrc',
+  txt: 'original-txt',
+  transLRC: 'translation-lrc',
+  transTXT: 'translation-txt',
+  romaLRC: 'sound-lrc',
+  romaTXT: 'sound-txt'
+};
 
 function text(value) { return document.createTextNode(value ?? ''); }
 function hasText(value) { return typeof value === 'string' && value.trim().length > 0; }
@@ -26,6 +36,7 @@ async function loadInfo() {
     if (info.mode === 'local') {
       modeNote.textContent = '本机模式：查询从这台电脑直接发出，不经过 lrc.flechazo.xin。';
     } else {
+      publicMode = true;
       modeNote.textContent = '网页模式：查询由本站后端转发，但不会写入数据库或日志正文。下载文件在浏览器中生成。';
       localDownloads.hidden = false;
     }
@@ -46,6 +57,12 @@ function download(name, body, type = 'text/plain;charset=utf-8') {
   setTimeout(() => URL.revokeObjectURL(url), 1500);
 }
 
+function recordDownload(kind) {
+  const event = downloadEvents[kind];
+  if (!publicMode || !event) return;
+  fetch(`/api/events/download/${event}`, {method: 'POST', keepalive: true}).catch(() => {});
+}
+
 function parseLRC(lrc) {
   const lines = [];
   for (const raw of (lrc || '').split(/\r?\n/)) {
@@ -129,6 +146,7 @@ function saveLyrics(song, data, kind) {
   const selected = variants[kind];
   if (!selected || !hasText(selected[1])) throw new Error('这首歌没有对应歌词');
   download(selected[0], selected[1]);
+  recordDownload(kind);
 }
 
 function populatePreview(select, output, data) {