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Co-authored-by: nrwiersma <nick@wiersma.co.za>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package dashboard | ||
|
|
||
| import ( | ||
| "io/fs" | ||
| "net/http" | ||
| "net/url" | ||
|
|
||
| "github.com/gorilla/mux" | ||
| "github.com/traefik/traefik/v2/webui" | ||
| ) | ||
|
|
||
| // Handler expose dashboard routes. | ||
| type Handler struct { | ||
| assets fs.FS // optional assets, to override the webui.FS default | ||
| } | ||
|
|
||
| // Append adds dashboard routes on the given router, optionally using the given | ||
| // assets (or webui.FS otherwise). | ||
| func Append(router *mux.Router, customAssets fs.FS) { | ||
| assets := customAssets | ||
| if assets == nil { | ||
| assets = webui.FS | ||
| } | ||
| // Expose dashboard | ||
| router.Methods(http.MethodGet). | ||
| Path("/"). | ||
| HandlerFunc(func(resp http.ResponseWriter, req *http.Request) { | ||
| http.Redirect(resp, req, safePrefix(req)+"/dashboard/", http.StatusFound) | ||
| }) | ||
|
|
||
| router.Methods(http.MethodGet). | ||
| PathPrefix("/dashboard/"). | ||
| HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| // allow iframes from our domains only | ||
| // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-src | ||
| w.Header().Set("Content-Security-Policy", "frame-src 'self' https://traefik.io https://*.traefik.io;") | ||
| http.StripPrefix("/dashboard/", http.FileServer(http.FS(assets))).ServeHTTP(w, r) | ||
| }) | ||
| } | ||
|
|
||
| func (g Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { | ||
| assets := g.assets | ||
| if assets == nil { | ||
| assets = webui.FS | ||
| } | ||
| // allow iframes from our domains only | ||
| // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-src | ||
| w.Header().Set("Content-Security-Policy", "frame-src 'self' https://traefik.io https://*.traefik.io;") | ||
| http.FileServer(http.FS(assets)).ServeHTTP(w, r) | ||
| } | ||
|
|
||
| func safePrefix(req *http.Request) string { | ||
| prefix := req.Header.Get("X-Forwarded-Prefix") | ||
| if prefix == "" { | ||
| return "" | ||
| } | ||
|
|
||
| parse, err := url.Parse(prefix) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
|
|
||
| if parse.Host != "" { | ||
| return "" | ||
| } | ||
|
|
||
| return parse.Path | ||
| } |
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