25 lines
684 B
Go
25 lines
684 B
Go
package handler
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import (
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"net/http"
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)
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// AuthMiddleware returns a middleware that validates the Bearer token.
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func AuthMiddleware(token string) func(http.Handler) http.Handler {
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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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const prefix = "Bearer "
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auth := r.Header.Get("Authorization")
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if len(auth) < len(prefix) || auth[:len(prefix)] != prefix {
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writeError(w, http.StatusUnauthorized, "missing or malformed Authorization header")
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return
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}
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if auth[len(prefix):] != token {
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writeError(w, http.StatusUnauthorized, "invalid token")
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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}
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