mirror of
https://github.com/harness/drone.git
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92 lines
2.9 KiB
Go
92 lines
2.9 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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/app/api/render"
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"github.com/harness/gitness/app/api/request"
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"github.com/harness/gitness/app/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(
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authenticator authn.Authenticator,
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required bool,
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) 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 err != nil {
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if !errors.Is(err, authn.ErrNoAuthData) {
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// log error to help with investigating any auth related errors
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log.Warn().Err(err).Msg("authentication failed")
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}
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if required {
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render.Unauthorized(ctx, w)
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return
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}
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// if there was no (valid) auth data in the request, then continue without session
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next.ServeHTTP(w, r)
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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(ctx, 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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