mirror of
https://github.com/golang/go
synced 2024-10-01 09:38:36 -06:00
25101aadb9
Change-Id: Idd003c76edbf9d3ecf3354036e734386c55ed1f2 Reviewed-on: https://go-review.googlesource.com/89695 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Command server serves get.golang.org, redirecting users to the appropriate
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// getgo installer based on the request path.
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package server
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import (
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"fmt"
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"net/http"
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"strings"
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"time"
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)
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const (
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base = "https://dl.google.com/go/getgo/"
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windowsInstaller = base + "installer.exe"
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linuxInstaller = base + "installer_linux"
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macInstaller = base + "installer_darwin"
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)
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// substring-based redirects.
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var stringMatch = map[string]string{
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// via uname, from bash
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"MINGW": windowsInstaller, // Reported as MINGW64_NT-10.0 in git bash
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"Linux": linuxInstaller,
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"Darwin": macInstaller,
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}
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func init() {
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http.HandleFunc("/", handler)
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}
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func handler(w http.ResponseWriter, r *http.Request) {
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if containsIgnoreCase(r.URL.Path, "installer.exe") {
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// cache bust
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http.Redirect(w, r, windowsInstaller+cacheBust(), http.StatusFound)
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return
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}
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for match, redirect := range stringMatch {
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if containsIgnoreCase(r.URL.Path, match) {
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http.Redirect(w, r, redirect, http.StatusFound)
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return
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}
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}
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http.NotFound(w, r)
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}
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func containsIgnoreCase(s, substr string) bool {
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return strings.Contains(
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strings.ToLower(s),
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strings.ToLower(substr),
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)
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}
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func cacheBust() string {
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return fmt.Sprintf("?%d", time.Now().Nanosecond())
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}
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