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83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// Copyright 2022 Harness Inc. All rights reserved.
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// Use of this source code is governed by the Polyform Free Trial License
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// that can be found in the LICENSE.md file for this repository.
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package authn
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import (
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"errors"
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"net/http"
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"github.com/harness/gitness/internal/api/render"
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"github.com/harness/gitness/internal/api/request"
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"github.com/harness/gitness/internal/auth/authn"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/hlog"
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)
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// Attempt returns an http.HandlerFunc middleware that authenticates
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// the http.Request if authentication payload is available.
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func Attempt(authenticator authn.Authenticator) func(http.Handler) http.Handler {
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return performAuthentication(authenticator, false)
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}
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// Required returns an http.HandlerFunc middleware that authenticates
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// the http.Request and fails the request if no auth data was available.
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func Required(authenticator authn.Authenticator) func(http.Handler) http.Handler {
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return performAuthentication(authenticator, true)
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}
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// performAuthentication returns an http.HandlerFunc middleware that authenticates
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// the http.Request if authentication payload is available.
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// Depending on whether it is required or not, the request will be failed.
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func performAuthentication(authenticator authn.Authenticator, required bool) 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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ctx := r.Context()
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log := hlog.FromRequest(r)
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session, err := authenticator.Authenticate(r)
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if errors.Is(err, authn.ErrNoAuthData) {
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if required {
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render.Unauthorized(w)
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return
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}
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// if there was no auth data in the request - continue as is
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next.ServeHTTP(w, r)
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return
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}
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if err != nil {
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log.Warn().Msgf("Failed to authenticate request: %s", err)
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// for any other error we fail
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render.Unauthorized(w)
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return
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}
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if session == nil {
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// when err == nil session should never be nil!
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log.Error().Msg("auth session is nil eventhough the authenticator didn't return any error!")
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render.InternalError(w)
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return
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}
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// Update the logging context and inject principal in context
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log.UpdateContext(func(c zerolog.Context) zerolog.Context {
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return c.
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Str("principal_uid", session.Principal.UID).
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Str("principal_type", string(session.Principal.Type)).
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Bool("principal_admin", session.Principal.Admin)
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})
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next.ServeHTTP(w, r.WithContext(
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request.WithAuthSession(ctx, session),
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))
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})
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}
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}
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