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Fix authentication when using a reverse proxy with subpath prefix (#1818)

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* Fix authentication when using a reverse proxy with subpath prefix
This commit is contained in:
InfiniteTF
2021-10-09 08:32:43 +02:00
committed by GitHub
parent 47ae1be53c
commit fb5f9162d0
4 changed files with 29 additions and 17 deletions
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26
pkg/api/server.go
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@@ -147,7 +147,11 @@ func Start(uiBox embed.FS, loginUIBox embed.FS) {
r.HandleFunc("/login*", func(w http.ResponseWriter, r *http.Request) {
ext := path.Ext(r.URL.Path)
if ext == ".html" || ext == "" {
_, _ = w.Write(getLoginPage(loginUIBox))
prefix := getProxyPrefix(r.Header)
data := getLoginPage(loginUIBox)
baseURLIndex := strings.Replace(string(data), "%BASE_URL%", prefix+"/", 2)
_, _ = w.Write([]byte(baseURLIndex))
} else {
r.URL.Path = strings.Replace(r.URL.Path, loginEndPoint, "", 1)
loginRoot, err := fs.Sub(loginUIBox, loginRootDir)
@@ -198,11 +202,7 @@ func Start(uiBox embed.FS, loginUIBox embed.FS) {
panic(err)
}
prefix := ""
if r.Header.Get("X-Forwarded-Prefix") != "" {
prefix = strings.TrimRight(r.Header.Get("X-Forwarded-Prefix"), "/")
}
prefix := getProxyPrefix(r.Header)
baseURLIndex := strings.Replace(string(data), "%BASE_URL%", prefix+"/", 2)
baseURLIndex = strings.Replace(baseURLIndex, "base href=\"/\"", fmt.Sprintf("base href=\"%s\"", prefix+"/"), 2)
_, _ = w.Write([]byte(baseURLIndex))
@@ -323,10 +323,7 @@ func BaseURLMiddleware(next http.Handler) http.Handler {
} else {
scheme = "http"
}
prefix := ""
if r.Header.Get("X-Forwarded-Prefix") != "" {
prefix = strings.TrimRight(r.Header.Get("X-Forwarded-Prefix"), "/")
}
prefix := getProxyPrefix(r.Header)
port := ""
forwardedPort := r.Header.Get("X-Forwarded-Port")
@@ -347,3 +344,12 @@ func BaseURLMiddleware(next http.Handler) http.Handler {
}
return http.HandlerFunc(fn)
}
func getProxyPrefix(headers http.Header) string {
prefix := ""
if headers.Get("X-Forwarded-Prefix") != "" {
prefix = strings.TrimRight(headers.Get("X-Forwarded-Prefix"), "/")
}
return prefix
}