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Only use Host header from reverse proxy (#32060)

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X-Forwarded-Host has many problems: non-standard, not well-defined
(X-Forwarded-Port or not), conflicts with Host header, it already caused
problems like #31907. So do not use X-Forwarded-Host, just use Host
header directly.

Official document also only uses `Host` header and never mentioned
others.
This commit is contained in:
wxiaoguang 2024-09-20 22:57:55 +08:00 • committed by GitHub
parent 55d5a74bb3
commit 3b10fd9b34
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3 changed files with 8 additions and 13 deletions
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13
modules/httplib/url.go
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@ -52,11 +52,6 @@ func getRequestScheme(req *http.Request) string {
return ""
}
func getForwardedHost(req *http.Request) string {
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host
return req.Header.Get("X-Forwarded-Host")
}
// GuessCurrentAppURL tries to guess the current full app URL (with sub-path) by http headers. It always has a '/' suffix, exactly the same as setting.AppURL
func GuessCurrentAppURL(ctx context.Context) string {
return GuessCurrentHostURL(ctx) + setting.AppSubURL + "/"
@ -81,11 +76,9 @@ func GuessCurrentHostURL(ctx context.Context) string {
if reqScheme == "" {
return strings.TrimSuffix(setting.AppURL, setting.AppSubURL+"/")
}
reqHost := getForwardedHost(req)
if reqHost == "" {
reqHost = req.Host
}
return reqScheme + "://" + reqHost
// X-Forwarded-Host has many problems: non-standard, not well-defined (X-Forwarded-Port or not), conflicts with Host header.
// So do not use X-Forwarded-Host, just use Host header directly.
return reqScheme + "://" + req.Host
}
// MakeAbsoluteURL tries to make a link to an absolute URL: