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