64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package handler
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"gitserver.in/patialtech/rano/util/uid"
|
|
)
|
|
|
|
const RequestIDKey = "RequestID"
|
|
const RequestIPKey = "RequestIP"
|
|
const RequestUserAgentKey = "RequestUA"
|
|
|
|
var defaultHeaders = []string{
|
|
"True-Client-IP", // Cloudflare Enterprise plan
|
|
"X-Real-IP",
|
|
"X-Forwarded-For",
|
|
}
|
|
|
|
// Request middleware that will do the following:
|
|
// - pull session user
|
|
// - set requestID
|
|
// - set ctx RealIP and client userAgent info
|
|
func Request() func(http.Handler) http.Handler {
|
|
return func(h http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
ctx := r.Context()
|
|
|
|
// ID
|
|
requestID := r.Header.Get("X-Request-Id")
|
|
if requestID == "" {
|
|
requestID = uid.ULID()
|
|
}
|
|
ctx = context.WithValue(ctx, RequestIDKey, requestID)
|
|
|
|
// IP
|
|
if ip := getRealIP(r, defaultHeaders); ip != "" {
|
|
r.RemoteAddr = ip
|
|
}
|
|
ctx = context.WithValue(ctx, RequestIPKey, requestID)
|
|
|
|
// User Agent
|
|
ctx = context.WithValue(ctx, RequestUserAgentKey, r.UserAgent())
|
|
|
|
h.ServeHTTP(w, r)
|
|
})
|
|
}
|
|
}
|
|
|
|
func getRealIP(r *http.Request, headers []string) string {
|
|
for _, header := range headers {
|
|
if ip := r.Header.Get(header); ip != "" {
|
|
ips := strings.Split(ip, ",")
|
|
if ips[0] == "" || net.ParseIP(ips[0]) == nil {
|
|
continue
|
|
}
|
|
return ips[0]
|
|
}
|
|
}
|
|
return ""
|
|
}
|