-
Notifications
You must be signed in to change notification settings - Fork 84
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Adding Authz support for Azure
- Loading branch information
Showing
64 changed files
with
4,655 additions
and
189 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| /* | ||
| Copyright The Guard Authors. | ||
| 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 azure | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| "github.com/Azure/go-autorest/autorest/azure" | ||
| auth "github.com/appscode/guard/auth/providers/azure" | ||
| "github.com/appscode/guard/authz" | ||
| "github.com/appscode/guard/authz/providers/azure/rbac" | ||
| "github.com/golang/glog" | ||
| "github.com/pkg/errors" | ||
| authzv1 "k8s.io/api/authorization/v1" | ||
| ) | ||
|
|
||
| const ( | ||
| OrgType = "azure" | ||
| ) | ||
|
|
||
| func init() { | ||
| authz.SupportedOrgs = append(authz.SupportedOrgs, OrgType) | ||
| } | ||
|
|
||
| type Authorizer struct { | ||
| rbacClient *rbac.AccessInfo | ||
| } | ||
|
|
||
| type authzInfo struct { | ||
| AADEndpoint string | ||
| ARMEndPoint string | ||
| } | ||
|
|
||
| func New(opts Options, authopts auth.Options, dataStore authz.Store) (authz.Interface, error) { | ||
| c := &Authorizer{} | ||
|
|
||
| authzInfoVal, err := getAuthzInfo(authopts.Environment) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "Error in getAuthzInfo %s") | ||
| } | ||
|
|
||
| switch opts.AuthzMode { | ||
| case ARCAuthzMode: | ||
| c.rbacClient, err = rbac.New(authopts.ClientID, authopts.ClientSecret, authopts.TenantID, authzInfoVal.AADEndpoint, authzInfoVal.ARMEndPoint, opts.AuthzMode, opts.ResourceId, opts.ARMCallLimit, dataStore, opts.SkipAuthzCheck, opts.AuthzResolveGroupMemberships, opts.SkipAuthzForNonAADUsers) | ||
| case AKSAuthzMode: | ||
| c.rbacClient, err = rbac.NewWithAKS(opts.AKSAuthzURL, authopts.TenantID, authzInfoVal.ARMEndPoint, opts.AuthzMode, opts.ResourceId, opts.ARMCallLimit, dataStore, opts.SkipAuthzCheck, opts.AuthzResolveGroupMemberships, opts.SkipAuthzForNonAADUsers) | ||
| } | ||
|
|
||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failed to create ms rbac client") | ||
| } | ||
| return c, nil | ||
| } | ||
|
|
||
| func (s Authorizer) Check(request *authzv1.SubjectAccessReviewSpec) (*authzv1.SubjectAccessReviewStatus, error) { | ||
| if request == nil { | ||
| return nil, errors.New("subject access review is nil") | ||
| } | ||
|
|
||
| // check if user is service account | ||
| if strings.HasPrefix(strings.ToLower(request.User), "system") { | ||
| glog.V(3).Infof("returning no op to service accounts") | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: false, Reason: rbac.NoOpinionVerdict}, nil | ||
| } | ||
|
|
||
| if _, ok := request.Extra["oid"]; !ok { | ||
| if s.rbacClient.ShouldSkipAuthzCheckForNonAADUsers() { | ||
| glog.V(3).Infof("Skip RBAC is set for non AAD users. Returning no opinion for user %s. You may observe this for AAD users for 'can-i' requests.", request.User) | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: false, Reason: rbac.NoOpinionVerdict}, nil | ||
| } else { | ||
| glog.V(3).Infof("Skip RBAC for non AAD user is not set. Returning deny access for non AAD user %s. You may observe this for AAD users for 'can-i' requests.", request.User) | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: false, Denied: true, Reason: rbac.NotAllowedForNonAADUsers}, nil | ||
| } | ||
| } | ||
|
|
||
| if s.rbacClient.SkipAuthzCheck(request) { | ||
| glog.V(3).Infof("user %s is part of skip authz list. returning no op.", request.User) | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: false, Reason: rbac.NoOpinionVerdict}, nil | ||
| } | ||
|
|
||
| exist, result := s.rbacClient.GetResultFromCache(request) | ||
| if exist { | ||
| if result { | ||
| glog.V(3).Infof("cache hit: returning allowed to user") | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: result, Reason: rbac.AccessAllowedVerdict}, nil | ||
| } else { | ||
| glog.V(3).Infof("cache hit: returning denied to user") | ||
| return &authzv1.SubjectAccessReviewStatus{Allowed: result, Denied: true, Reason: rbac.AccessNotAllowedVerdict}, nil | ||
| } | ||
| } | ||
|
|
||
| if s.rbacClient.IsTokenExpired() { | ||
| s.rbacClient.RefreshToken() | ||
| } | ||
| return s.rbacClient.CheckAccess(request) | ||
| } | ||
|
|
||
| func getAuthzInfo(environment string) (*authzInfo, error) { | ||
| var err error | ||
| env := azure.PublicCloud | ||
| if environment != "" { | ||
| env, err = azure.EnvironmentFromName(environment) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failed to parse environment for azure") | ||
| } | ||
| } | ||
|
|
||
| return &authzInfo{ | ||
| AADEndpoint: env.ActiveDirectoryEndpoint, | ||
| ARMEndPoint: env.ResourceManagerEndpoint, | ||
| }, nil | ||
| } |
Oops, something went wrong.