drone/app/api/middleware/principal/principal.go

86 lines
2.4 KiB
Go

// Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package principal
import (
"net/http"
"github.com/harness/gitness/app/api/render"
"github.com/harness/gitness/app/api/request"
"github.com/harness/gitness/types"
"github.com/harness/gitness/types/enum"
"github.com/rs/zerolog/log"
)
/*
* RestrictTo returns an http.HandlerFunc middleware that ensures the principal
* is of the provided type. In case there is no authenticated principal,
* or the principal type doesn't match, an error is rendered.
*/
func RestrictTo(pType enum.PrincipalType) func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
p, ok := request.PrincipalFrom(ctx)
if !ok {
log.Ctx(ctx).Debug().Msgf("Failed to get principal from session")
render.Forbidden(ctx, w)
return
}
if p.UID == types.AnonymousPrincipalUID {
log.Ctx(ctx).Debug().Msgf("Valid principal is required, received an Anonymous.")
render.Unauthorized(ctx, w)
return
}
if p.Type != pType {
log.Ctx(ctx).Debug().Msgf("Principal of type '%s' required.", pType)
render.Forbidden(ctx, w)
return
}
next.ServeHTTP(w, r)
})
}
}
/*
* RestrictToAdmin returns an http.HandlerFunc middleware that ensures the principal
* is an admin. In case there is no authenticated principal,
* or the principal isn't an admin, an error is rendered.
*/
func RestrictToAdmin() func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
p, ok := request.PrincipalFrom(ctx)
if !ok || !p.Admin {
log.Ctx(ctx).Debug().Msg("No principal found or the principal is no admin")
render.Forbidden(ctx, w)
return
}
next.ServeHTTP(w, r)
})
}
}