mirror of https://github.com/harness/drone.git
118 lines
3.6 KiB
Go
118 lines
3.6 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 auth
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import (
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"context"
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"fmt"
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"github.com/harness/gitness/app/auth"
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"github.com/harness/gitness/app/auth/authz"
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"github.com/harness/gitness/app/paths"
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"github.com/harness/gitness/app/store"
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"github.com/harness/gitness/types"
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"github.com/harness/gitness/types/enum"
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"github.com/pkg/errors"
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"github.com/rs/zerolog/log"
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)
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var (
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ErrNotAuthenticated = errors.New("not authenticated")
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ErrNotAuthorized = errors.New("not authorized")
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ErrParentResourceTypeUnknown = errors.New("Unknown parent resource type")
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ErrPrincipalTypeUnknown = errors.New("Unknown principal type")
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)
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// Check checks if a resource specific permission is granted for the current auth session in the scope.
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// Returns nil if the permission is granted, otherwise returns an error.
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// NotAuthenticated, NotAuthorized, or any underlying error.
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func Check(ctx context.Context, authorizer authz.Authorizer, session *auth.Session,
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scope *types.Scope, resource *types.Resource, permission enum.Permission,
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) error {
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if session == nil {
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return ErrNotAuthenticated
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}
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authorized, err := authorizer.Check(
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ctx,
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session,
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scope,
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resource,
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permission)
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if err != nil {
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return err
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}
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if !authorized {
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return ErrNotAuthorized
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}
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return nil
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}
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// CheckChild checks if a resource specific permission is granted for the current auth session
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// in the scope of a parent.
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// Returns nil if the permission is granted, otherwise returns an error.
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// NotAuthenticated, NotAuthorized, or any underlying error.
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func CheckChild(ctx context.Context, authorizer authz.Authorizer, session *auth.Session,
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spaceStore store.SpaceStore, repoStore store.RepoStore, parentType enum.ParentResourceType, parentID int64,
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resourceType enum.ResourceType, resourceName string, permission enum.Permission) error {
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scope, err := getScopeForParent(ctx, spaceStore, repoStore, parentType, parentID)
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if err != nil {
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return err
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}
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resource := &types.Resource{
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Type: resourceType,
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Name: resourceName,
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}
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return Check(ctx, authorizer, session, scope, resource, permission)
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}
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// getScopeForParent Returns the scope for a given resource parent (space or repo).
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func getScopeForParent(ctx context.Context, spaceStore store.SpaceStore, repoStore store.RepoStore,
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parentType enum.ParentResourceType, parentID int64) (*types.Scope, error) {
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// TODO: Can this be done cleaner?
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switch parentType {
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case enum.ParentResourceTypeSpace:
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space, err := spaceStore.Find(ctx, parentID)
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if err != nil {
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return nil, fmt.Errorf("parent space not found: %w", err)
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}
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return &types.Scope{SpacePath: space.Path}, nil
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case enum.ParentResourceTypeRepo:
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repo, err := repoStore.Find(ctx, parentID)
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if err != nil {
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return nil, fmt.Errorf("parent repo not found: %w", err)
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}
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spacePath, repoName, err := paths.DisectLeaf(repo.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "Failed to disect path '%s'", repo.Path)
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}
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return &types.Scope{SpacePath: spacePath, Repo: repoName}, nil
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default:
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log.Ctx(ctx).Debug().Msgf("Unsupported parent type encountered: '%s'", parentType)
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return nil, ErrParentResourceTypeUnknown
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}
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}
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