1791533e0e
Reviewed-on: https://git.mills.io/prologic/tube/pulls/23 Co-authored-by: gabek <gabek@noreply@mills.io> Co-committed-by: gabek <gabek@noreply@mills.io>
50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
package middleware
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import (
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"crypto/subtle"
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"net/http"
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log "github.com/sirupsen/logrus"
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)
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// OptionallyRequireAdminAuth wraps a handler requiring HTTP basic auth
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// using "uploader" as the username.
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// If a password isn't set then auth is skipped.
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func OptionallyRequireAdminAuth(handler http.HandlerFunc, password string) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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// Empty password means auth is not required.
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if password == "" {
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handler(w, r)
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return
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}
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username := "uploader"
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realm := "Tube uploader"
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// The following line is kind of a work around.
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// If you want HTTP Basic Auth + Cors it requires _explicit_ origins to be provided in the
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// Access-Control-Allow-Origin header. So we just pull out the origin header and specify it.
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// If we want to lock down admin APIs to not be CORS accessible for anywhere, this is where we would do that.
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w.Header().Set("Access-Control-Allow-Origin", r.Header.Get("Origin"))
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w.Header().Set("Access-Control-Allow-Credentials", "true")
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w.Header().Set("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization")
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// For request needing CORS, send a 204.
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if r.Method == "OPTIONS" {
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w.WriteHeader(http.StatusNoContent)
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return
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}
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user, pass, ok := r.BasicAuth()
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// Failed
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if !ok || subtle.ConstantTimeCompare([]byte(user), []byte(username)) != 1 || subtle.ConstantTimeCompare([]byte(pass), []byte(password)) != 1 {
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w.Header().Set("WWW-Authenticate", `Basic realm="`+realm+`"`)
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http.Error(w, "Unauthorized", http.StatusUnauthorized)
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log.Debugln("Failed uploader authentication")
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return
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}
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handler(w, r)
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}
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}
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