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Add support for K8s ingress-nginx "rd" URL parameter

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Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2023-07-28 20:39:03 +02:00
parent b515730dcf
commit 2986da43bc
Signed by: luzifer
GPG key ID: D91C3E91E4CAD6F5
1 changed files with 16 additions and 6 deletions
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22
redirect.go
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@ -10,9 +10,10 @@ import (
func getRedirectURL(r *http.Request, fallback string) (string, error) {
var (
params url.Values
redirURL string
sessURL string
params url.Values
redirURL string
removeParam string
sessURL string
)
if cookieStore != nil {
@ -23,9 +24,16 @@ func getRedirectURL(r *http.Request, fallback string) (string, error) {
}
switch {
case r.URL.Query().Get("rd") != "":
// We have a GET request with a "rd" query param (K8s ingress-nginx)
redirURL = r.URL.Query().Get("rd")
removeParam = "rd"
params = r.URL.Query()
case r.URL.Query().Get("go") != "":
// We have a GET request, use "go" query param
redirURL = r.URL.Query().Get("go")
removeParam = "go"
params = r.URL.Query()
case r.FormValue("go") != "":
@ -42,13 +50,15 @@ func getRedirectURL(r *http.Request, fallback string) (string, error) {
return fallback, nil
}
// Remove the "go" parameter as it is a parameter for nginx-sso
params.Del("go")
// Remove the redirect parameter as it is a parameter for nginx-sso
if removeParam != "" {
params.Del(removeParam)
}
// Parse given URL to extract attached parameters
pURL, err := url.Parse(redirURL)
if err != nil {
return "", errors.Wrap(err, "Unable to parse redirect URL")
return "", errors.Wrap(err, "parsing redirect URL")
}
// Transfer parameters from URL to params set