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godoc/dl: also serve go-import meta tags at golang.org/dl for cmd/go

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Updates golang/go#23223

Change-Id: Iacecbb5e095fd3d6acb3f8e1fb238db63d1e0b6d
Reviewed-on: https://go-review.googlesource.com/125195
Reviewed-by: Andrew Bonventre <andybons@golang.org>
This commit is contained in:
Brad Fitzpatrick 2018-07-20 04:14:21 +00:00
parent 827f47db85
commit 99195f4d4f
1 changed files with 21 additions and 3 deletions
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20
godoc/dl/dl.go
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@ -41,7 +41,7 @@ const (
)
func RegisterHandlers(mux *http.ServeMux) {
mux.Handle("/dl", http.RedirectHandler("/dl/", http.StatusFound))
mux.HandleFunc("/dl", getHandler)
mux.HandleFunc("/dl/", getHandler) // also serves listHandler
mux.HandleFunc("/dl/upload", uploadHandler)
mux.HandleFunc("/dl/init", initHandler)
@ -428,6 +428,20 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
}
func getHandler(w http.ResponseWriter, r *http.Request) {
// For go get golang.org/dl/go1.x.y, we need to serve the
// same meta tags at /dl for cmd/go to validate against /dl/go1.x.y:
if r.URL.Path == "/dl" && (r.Method == "GET" || r.Method == "HEAD") && r.FormValue("go-get") == "1" {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
fmt.Fprintf(w, `<!DOCTYPE html><html><head>
<meta name="go-import" content="golang.org/dl git https://go.googlesource.com/dl">
</head></html>`)
return
}
if r.URL.Path == "/dl" {
http.Redirect(w, r, "/dl/", http.StatusFound)
return
}
name := strings.TrimPrefix(r.URL.Path, "/dl/")
if name == "" {
listHandler(w, r)
@ -438,11 +452,15 @@ func getHandler(w http.ResponseWriter, r *http.Request) {
return
}
if goGetRe.MatchString(name) {
var isGoGet bool
if r.Method == "GET" || r.Method == "HEAD" {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
isGoGet = r.FormValue("go-get") == "1"
}
if !isGoGet {
w.Header().Set("Location", "https://golang.org/dl/#"+name)
w.WriteHeader(http.StatusFound)
}
fmt.Fprintf(w, `<!DOCTYPE html>
<html>
<head>