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let upstream middleware (e.g. fastcgi and cgi) know about authenticated user #96

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Dec 26, 2018
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let upstream middleware (e.g. fastcgi and cgi) know about authenticated user #96

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7 changes: 7 additions & 0 deletions caddy/handler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package caddy
import (
"github.com/mholt/caddy/caddyhttp/httpserver"
"github.com/tarent/loginsrv/login"
"context"
"net/http"
"strings"
)
Expand All @@ -28,6 +29,12 @@ func (h *CaddyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, e
//Fetch jwt token. If valid set a Caddy replacer for {user}
userInfo, valid := h.loginHandler.GetToken(r)
if valid {
// let upstream middleware (e.g. fastcgi and cgi) know about authenticated
// user; this replaces the request with a wrapped instance
r = r.WithContext(context.WithValue(r.Context(),
httpserver.RemoteUserCtxKey, userInfo.Sub))

// Provide username to be used in log by replacer
repl := httpserver.NewReplacer(r, nil, "-")
repl.Set("user", userInfo.Sub)
}
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