Mya Pitzeruse
02d115f682
This change refactors a handful of components to make them reusable across pageview and session tracking endpoints. Resolves https://github.com/mjpitz/pages/issues/2
71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
// Copyright (C) 2022 The pages authors
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
|
|
package geoip
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
"net/http"
|
|
|
|
"github.com/gorilla/mux"
|
|
|
|
"github.com/mjpitz/myago"
|
|
)
|
|
|
|
var key = myago.ContextKey("geoip.info")
|
|
|
|
type Info struct {
|
|
CountryCode string
|
|
}
|
|
|
|
func Extract(ctx context.Context) Info {
|
|
val := ctx.Value(key)
|
|
v, ok := val.(Info)
|
|
|
|
if val == nil || !ok {
|
|
return Info{}
|
|
}
|
|
|
|
return v
|
|
}
|
|
|
|
type Interface interface {
|
|
Lookup(ip string) Info
|
|
}
|
|
|
|
type Empty struct{}
|
|
|
|
func (e Empty) Lookup(ip string) Info {
|
|
return Info{}
|
|
}
|
|
|
|
func Middleware(geoip Interface) mux.MiddlewareFunc {
|
|
return func(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
clientIP, _, err := net.SplitHostPort(r.RemoteAddr)
|
|
if err != nil {
|
|
http.Error(w, "", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
ctx := context.WithValue(r.Context(), key, geoip.Lookup(clientIP))
|
|
|
|
next.ServeHTTP(w, r.WithContext(ctx))
|
|
})
|
|
}
|
|
}
|