godoc/dl: add meta tags for go get golang.org/dl/go1.N
Updates golang/go#23223
Change-Id: I628cea181d3a0e6bb25fdd98e098581aa222e049
Reviewed-on: https://go-review.googlesource.com/123679
Reviewed-by: Andrew Bonventre <andybons@golang.org>
diff --git a/godoc/dl/dl.go b/godoc/dl/dl.go
index 6555940..629b6ca 100644
--- a/godoc/dl/dl.go
+++ b/godoc/dl/dl.go
@@ -16,6 +16,7 @@
"crypto/md5"
"encoding/json"
"fmt"
+ "html"
"html/template"
"io"
"net/http"
@@ -432,11 +433,31 @@
listHandler(w, r)
return
}
- if !fileRe.MatchString(name) {
- http.NotFound(w, r)
+ if fileRe.MatchString(name) {
+ http.Redirect(w, r, downloadBaseURL+name, http.StatusFound)
return
}
- http.Redirect(w, r, downloadBaseURL+name, http.StatusFound)
+ if goGetRe.MatchString(name) {
+ if r.Method == "GET" || r.Method == "HEAD" {
+ w.Header().Set("Content-Type", "text/html; charset=utf-8")
+ }
+ w.Header().Set("Location", "https://golang.org/dl/#"+name)
+ w.WriteHeader(http.StatusFound)
+ fmt.Fprintf(w, `<!DOCTYPE html>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<meta name="go-import" content="golang.org/dl git https://go.googlesource.com/dl">
+<meta http-equiv="refresh" content="0; url=https://golang.org/dl/#%s">
+</head>
+<body>
+Nothing to see here; <a href="https://golang.org/dl/#%s">move along</a>.
+</body>
+</html>
+`, html.EscapeString(name), html.EscapeString(name))
+ return
+ }
+ http.NotFound(w, r)
}
func validUser(user string) bool {
@@ -453,7 +474,10 @@
return fmt.Sprintf("%x", h.Sum(nil))
}
-var fileRe = regexp.MustCompile(`^go[0-9a-z.]+\.[0-9a-z.-]+\.(tar\.gz|pkg|msi|zip)$`)
+var (
+ fileRe = regexp.MustCompile(`^go[0-9a-z.]+\.[0-9a-z.-]+\.(tar\.gz|pkg|msi|zip)$`)
+ goGetRe = regexp.MustCompile(`^go[0-9a-z.]+\.[0-9a-z.-]+$`)
+)
func initHandler(w http.ResponseWriter, r *http.Request) {
var fileRoot struct {
