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| // Copyright 2020 The Operator-SDK 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 collector | ||
|
|
||
| import ( | ||
| rbacv1 "k8s.io/api/rbac/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| ) | ||
|
|
||
| // TODO(estroz): there's a significant amount of code dupliation here, a byproduct of Go's type system. | ||
| // However at least a few bits can be refactored so each method is smaller. | ||
|
|
||
| const ( | ||
| // This service account exists in every namespace as the default. | ||
| defaultServiceAccountName = "default" | ||
|
|
||
| serviceAccountKind = "ServiceAccount" | ||
| ) | ||
|
|
||
| // SplitCSVPermissionsObjects splits roles that should be written to a CSV as permissions (in) | ||
| // from roles and role bindings that should be written directly to the bundle (out). | ||
| func (c *Manifests) SplitCSVPermissionsObjects() (in, out []runtime.Object) { //nolint:dupl | ||
| roleMap := make(map[string]*rbacv1.Role) | ||
| for i := range c.Roles { | ||
| roleMap[c.Roles[i].GetName()] = &c.Roles[i] | ||
| } | ||
| roleBindingMap := make(map[string]*rbacv1.RoleBinding) | ||
| for i := range c.RoleBindings { | ||
| roleBindingMap[c.RoleBindings[i].GetName()] = &c.RoleBindings[i] | ||
| } | ||
|
|
||
| // Check for unbound roles. | ||
| for roleName, role := range roleMap { | ||
| hasRef := false | ||
| for _, roleBinding := range roleBindingMap { | ||
| roleRef := roleBinding.RoleRef | ||
| if roleRef.Kind == "Role" && (roleRef.APIGroup == "" || roleRef.APIGroup == rbacv1.SchemeGroupVersion.Group) { | ||
| if roleRef.Name == roleName { | ||
| hasRef = true | ||
| break | ||
| } | ||
| } | ||
| } | ||
| if !hasRef { | ||
| out = append(out, role) | ||
| delete(roleMap, roleName) | ||
| } | ||
| } | ||
|
|
||
| // If a role is bound and: | ||
| // 1. the binding only has one subject and it is a service account that maps to a deployment service account, | ||
| // add the role to in. | ||
| // 2. the binding only has one subject and it does not map to a deployment service account or is not a service account, | ||
| // add both role and binding to out. | ||
| // 3. the binding has more than one subject and: | ||
| // a. one of those subjects is a deployment's service account, add both role and binding to out and role to in. | ||
| // b. none of those subjects is a service account or maps to a deployment's service account, add both role and binding to out. | ||
| deploymentSANames := make(map[string]struct{}) | ||
| for _, dep := range c.Deployments { | ||
| saName := dep.Spec.Template.Spec.ServiceAccountName | ||
| if saName == "" { | ||
| saName = defaultServiceAccountName | ||
| } | ||
| deploymentSANames[saName] = struct{}{} | ||
| } | ||
|
|
||
| inRoleNames := make(map[string]struct{}) | ||
| outRoleNames := make(map[string]struct{}) | ||
| outRoleBindingNames := make(map[string]struct{}) | ||
| for _, binding := range c.RoleBindings { | ||
| roleRef := binding.RoleRef | ||
| if roleRef.Kind == "Role" && (roleRef.APIGroup == "" || roleRef.APIGroup == rbacv1.SchemeGroupVersion.Group) { | ||
| numSubjects := len(binding.Subjects) | ||
| if numSubjects == 1 { | ||
| // cases (1) and (2). | ||
| if _, hasSA := deploymentSANames[binding.Subjects[0].Name]; hasSA && binding.Subjects[0].Kind == serviceAccountKind { | ||
| inRoleNames[roleRef.Name] = struct{}{} | ||
| } else { | ||
| outRoleNames[roleRef.Name] = struct{}{} | ||
| outRoleBindingNames[binding.GetName()] = struct{}{} | ||
| } | ||
| } else { | ||
| // case (3). | ||
| for _, subject := range binding.Subjects { | ||
| if _, hasSA := deploymentSANames[subject.Name]; hasSA && subject.Kind == serviceAccountKind { | ||
| // case (3a). | ||
| inRoleNames[roleRef.Name] = struct{}{} | ||
| } | ||
| } | ||
| // case (3b). | ||
| outRoleNames[roleRef.Name] = struct{}{} | ||
| outRoleBindingNames[binding.GetName()] = struct{}{} | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for roleName := range inRoleNames { | ||
| if role, hasRoleName := roleMap[roleName]; hasRoleName { | ||
| in = append(in, role) | ||
| } | ||
| } | ||
| for roleName := range outRoleNames { | ||
| if role, hasRoleName := roleMap[roleName]; hasRoleName { | ||
| out = append(out, role) | ||
| } | ||
| } | ||
| for roleBindingName := range outRoleBindingNames { | ||
| if roleBinding, hasRoleBindingName := roleBindingMap[roleBindingName]; hasRoleBindingName { | ||
| out = append(out, roleBinding) | ||
| } | ||
| } | ||
|
|
||
| return in, out | ||
| } | ||
|
|
||
| // SplitCSVClusterPermissionsObjects splits cluster roles that should be written to a CSV as clusterPermissions (in) | ||
| // from cluster roles and cluster role bindings that should be written directly to the bundle (out). | ||
| func (c *Manifests) SplitCSVClusterPermissionsObjects() (in, out []runtime.Object) { //nolint:dupl | ||
| roleMap := make(map[string]*rbacv1.ClusterRole) | ||
| for i := range c.ClusterRoles { | ||
| roleMap[c.ClusterRoles[i].GetName()] = &c.ClusterRoles[i] | ||
| } | ||
| roleBindingMap := make(map[string]*rbacv1.ClusterRoleBinding) | ||
| for i := range c.ClusterRoleBindings { | ||
| roleBindingMap[c.ClusterRoleBindings[i].GetName()] = &c.ClusterRoleBindings[i] | ||
| } | ||
|
|
||
| // Check for unbound roles. | ||
| for roleName, role := range roleMap { | ||
| hasRef := false | ||
| for _, roleBinding := range roleBindingMap { | ||
| roleRef := roleBinding.RoleRef | ||
| if roleRef.Kind == "ClusterRole" && (roleRef.APIGroup == "" || roleRef.APIGroup == rbacv1.SchemeGroupVersion.Group) { | ||
| if roleRef.Name == roleName { | ||
| hasRef = true | ||
| break | ||
| } | ||
| } | ||
| } | ||
| if !hasRef { | ||
| out = append(out, role) | ||
| delete(roleMap, roleName) | ||
| } | ||
| } | ||
|
|
||
| // If a role is bound and: | ||
| // 1. the binding only has one subject and it is a service account that maps to a deployment service account, | ||
| // add the role to in. | ||
| // 2. the binding only has one subject and it does not map to a deployment service account or is not a service account, | ||
| // add both role and binding to out. | ||
| // 3. the binding has more than one subject and: | ||
| // a. one of those subjects is a deployment's service account, add both role and binding to out and role to in. | ||
| // b. none of those subjects is a service account or maps to a deployment's service account, add both role and binding to out. | ||
| deploymentSANames := make(map[string]struct{}) | ||
| for _, dep := range c.Deployments { | ||
| saName := dep.Spec.Template.Spec.ServiceAccountName | ||
| if saName == "" { | ||
| saName = defaultServiceAccountName | ||
| } | ||
| deploymentSANames[saName] = struct{}{} | ||
| } | ||
|
|
||
| inRoleNames := make(map[string]struct{}) | ||
| outRoleNames := make(map[string]struct{}) | ||
| outRoleBindingNames := make(map[string]struct{}) | ||
| for _, binding := range c.ClusterRoleBindings { | ||
| roleRef := binding.RoleRef | ||
| if roleRef.Kind == "ClusterRole" && (roleRef.APIGroup == "" || roleRef.APIGroup == rbacv1.SchemeGroupVersion.Group) { | ||
| numSubjects := len(binding.Subjects) | ||
| if numSubjects == 1 { | ||
| // cases (1) and (2). | ||
| if _, hasSA := deploymentSANames[binding.Subjects[0].Name]; hasSA && binding.Subjects[0].Kind == serviceAccountKind { | ||
| inRoleNames[roleRef.Name] = struct{}{} | ||
| } else { | ||
| outRoleNames[roleRef.Name] = struct{}{} | ||
| outRoleBindingNames[binding.GetName()] = struct{}{} | ||
| } | ||
| } else { | ||
| // case (3). | ||
| for _, subject := range binding.Subjects { | ||
| if _, hasSA := deploymentSANames[subject.Name]; hasSA && subject.Kind == serviceAccountKind { | ||
| // case (3a). | ||
| inRoleNames[roleRef.Name] = struct{}{} | ||
| } | ||
| } | ||
| // case (3b). | ||
| outRoleNames[roleRef.Name] = struct{}{} | ||
| outRoleBindingNames[binding.GetName()] = struct{}{} | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for roleName := range inRoleNames { | ||
| if role, hasRoleName := roleMap[roleName]; hasRoleName { | ||
| in = append(in, role) | ||
| } | ||
| } | ||
| for roleName := range outRoleNames { | ||
| if role, hasRoleName := roleMap[roleName]; hasRoleName { | ||
| out = append(out, role) | ||
| } | ||
| } | ||
| for roleBindingName := range outRoleBindingNames { | ||
| if roleBinding, hasRoleBindingName := roleBindingMap[roleBindingName]; hasRoleBindingName { | ||
| out = append(out, roleBinding) | ||
| } | ||
| } | ||
|
|
||
| return in, out | ||
| } |
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