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Use unique static path for auth assets to avoid collision with routes

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This commit is contained in:
Viktor Liu
2026-02-09 01:10:50 +08:00
parent 2f390e1794
commit 3b43c00d12
6 changed files with 70 additions and 36 deletions
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2
proxy/web/dist/assets/index.js vendored
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2
proxy/web/dist/assets/style.css vendored
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6
proxy/web/dist/index.html vendored
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@@ -2,12 +2,12 @@
<html lang="en" class="dark">
<head>
<meta charset="UTF-8" />
<link rel="icon" type="image/x-icon" href="/assets/favicon.ico" />
<link rel="icon" type="image/x-icon" href="/__netbird__/assets/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>NetBird Service</title>
<meta name="robots" content="noindex, nofollow" />
<script type="module" crossorigin src="/assets/index.js"></script>
<link rel="stylesheet" crossorigin href="/assets/style.css">
<script type="module" crossorigin src="/__netbird__/assets/index.js"></script>
<link rel="stylesheet" crossorigin href="/__netbird__/assets/style.css">
</head>
<body>
<!-- Go template variables injected here -->

1
proxy/web/vite.config.ts
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@@ -5,6 +5,7 @@ import path from 'path'
export default defineConfig({
plugins: [react(), tailwindcss()],
base: '/__netbird__/',
resolve: {
alias: {
'@': path.resolve(__dirname, './src'),

92
proxy/web/web.go
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@@ -11,6 +11,10 @@ import (
"strings"
)
// PathPrefix is the unique URL prefix for serving the proxy's own web assets.
// Using a distinctive prefix prevents collisions with backend application routes.
const PathPrefix = "/__netbird__"
//go:embed dist/*
var files embed.FS
@@ -35,6 +39,38 @@ func init() {
tmpl, initErr = template.New("index").Parse(string(indexHTML))
}
// AssetHandler returns middleware that intercepts requests for the proxy's
// own web assets (under PathPrefix) and serves them from the embedded
// filesystem, preventing them from being forwarded to backend services.
func AssetHandler(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if strings.HasPrefix(r.URL.Path, PathPrefix+"/") {
serveAsset(w, r)
return
}
next.ServeHTTP(w, r)
})
}
// serveAsset serves a static file from the embedded filesystem.
func serveAsset(w http.ResponseWriter, r *http.Request) {
if initErr != nil {
http.Error(w, initErr.Error(), http.StatusInternalServerError)
return
}
// Strip the prefix to get the embedded FS path (e.g. "assets/index.js").
filePath := strings.TrimPrefix(r.URL.Path, PathPrefix+"/")
content, err := fs.ReadFile(webFS, filePath)
if err != nil {
http.Error(w, "not found", http.StatusNotFound)
return
}
setContentType(w, filePath)
w.Write(content) //nolint:errcheck
}
// ServeHTTP serves the web UI. For static assets it serves them directly,
// for other paths it renders the page with the provided data.
// Optional statusCode can be passed to set a custom HTTP status code (default 200).
@@ -54,42 +90,19 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, data any, statusCode ...i
return
}
w.Header().Set("Content-Type", "text/plain")
w.Write(content)
w.Write(content) //nolint:errcheck
return
}
// Serve static assets directly
if strings.HasPrefix(path, "/assets/") {
filePath := strings.TrimPrefix(path, "/")
content, err := fs.ReadFile(webFS, filePath)
if err != nil {
http.Error(w, "not found", http.StatusNotFound)
return
}
switch filepath.Ext(filePath) {
case ".js":
w.Header().Set("Content-Type", "application/javascript")
case ".css":
w.Header().Set("Content-Type", "text/css")
case ".svg":
w.Header().Set("Content-Type", "image/svg+xml")
case ".ttf":
w.Header().Set("Content-Type", "font/ttf")
case ".woff":
w.Header().Set("Content-Type", "font/woff")
case ".woff2":
w.Header().Set("Content-Type", "font/woff2")
case ".ico":
w.Header().Set("Content-Type", "image/x-icon")
}
w.Write(content)
// Serve static assets directly (handles requests that reach here
// via auth middleware calling ServeHTTP for unauthenticated requests).
if strings.HasPrefix(path, PathPrefix+"/") {
serveAsset(w, r)
return
}
// Render the page with data
dataJSON, _ := json.Marshal(data)
dataJSON, _ := json.Marshal(data) //nolint:errcheck
var buf bytes.Buffer
if err := tmpl.Execute(&buf, struct {
@@ -105,7 +118,26 @@ func ServeHTTP(w http.ResponseWriter, r *http.Request, data any, statusCode ...i
if len(statusCode) > 0 {
w.WriteHeader(statusCode[0])
}
w.Write(buf.Bytes())
w.Write(buf.Bytes()) //nolint:errcheck
}
func setContentType(w http.ResponseWriter, filePath string) {
switch filepath.Ext(filePath) {
case ".js":
w.Header().Set("Content-Type", "application/javascript")
case ".css":
w.Header().Set("Content-Type", "text/css")
case ".svg":
w.Header().Set("Content-Type", "image/svg+xml")
case ".ttf":
w.Header().Set("Content-Type", "font/ttf")
case ".woff":
w.Header().Set("Content-Type", "font/woff")
case ".woff2":
w.Header().Set("Content-Type", "font/woff2")
case ".ico":
w.Header().Set("Content-Type", "image/x-icon")
}
}
// ErrorStatus represents the connection status for each component in the error page.