/
rbac.go
184 lines (157 loc) 路 4.99 KB
/
rbac.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of K9s
package dao
import (
"context"
"fmt"
"github.com/derailed/k9s/internal"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/render"
"github.com/rs/zerolog/log"
rbacv1 "k8s.io/api/rbac/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
)
const (
crbGVR = "rbac.authorization.k8s.io/v1/clusterrolebindings"
crGVR = "rbac.authorization.k8s.io/v1/clusterroles"
rbGVR = "rbac.authorization.k8s.io/v1/rolebindings"
rGVR = "rbac.authorization.k8s.io/v1/roles"
)
var (
_ Accessor = (*Rbac)(nil)
_ Nuker = (*Rbac)(nil)
)
// Rbac represents a model for listing rbac resources.
type Rbac struct {
Resource
}
// List lists out rbac resources.
func (r *Rbac) List(ctx context.Context, ns string) ([]runtime.Object, error) {
gvr, ok := ctx.Value(internal.KeyGVR).(client.GVR)
if !ok {
return nil, fmt.Errorf("expecting a context gvr")
}
path, ok := ctx.Value(internal.KeyPath).(string)
if !ok || path == "" {
return r.Resource.List(ctx, ns)
}
switch gvr.R() {
case "clusterrolebindings":
return r.loadClusterRoleBinding(path)
case "rolebindings":
return r.loadRoleBinding(path)
case "clusterroles":
return r.loadClusterRole(path)
case "roles":
return r.loadRole(path)
default:
return nil, fmt.Errorf("expecting clusterrole/role but found %s", gvr.R())
}
}
func (r *Rbac) loadClusterRoleBinding(path string) ([]runtime.Object, error) {
o, err := r.getFactory().Get(crbGVR, path, true, labels.Everything())
if err != nil {
return nil, err
}
var crb rbacv1.ClusterRoleBinding
err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &crb)
if err != nil {
return nil, err
}
crbo, err := r.getFactory().Get(crGVR, client.FQN("-", crb.RoleRef.Name), true, labels.Everything())
if err != nil {
return nil, err
}
var cr rbacv1.ClusterRole
err = runtime.DefaultUnstructuredConverter.FromUnstructured(crbo.(*unstructured.Unstructured).Object, &cr)
if err != nil {
return nil, err
}
return asRuntimeObjects(parseRules(client.ClusterScope, "-", cr.Rules)), nil
}
func (r *Rbac) loadRoleBinding(path string) ([]runtime.Object, error) {
o, err := r.getFactory().Get(rbGVR, path, true, labels.Everything())
if err != nil {
return nil, err
}
var rb rbacv1.RoleBinding
if err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &rb); err != nil {
return nil, err
}
if rb.RoleRef.Kind == "ClusterRole" {
o, e := r.getFactory().Get(crGVR, client.FQN("-", rb.RoleRef.Name), true, labels.Everything())
if e != nil {
return nil, e
}
var cr rbacv1.ClusterRole
err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &cr)
if err != nil {
return nil, err
}
return asRuntimeObjects(parseRules(client.ClusterScope, "-", cr.Rules)), nil
}
ro, err := r.getFactory().Get(rGVR, client.FQN(rb.Namespace, rb.RoleRef.Name), true, labels.Everything())
if err != nil {
return nil, err
}
var role rbacv1.Role
err = runtime.DefaultUnstructuredConverter.FromUnstructured(ro.(*unstructured.Unstructured).Object, &role)
if err != nil {
return nil, err
}
return asRuntimeObjects(parseRules(client.ClusterScope, "-", role.Rules)), nil
}
func (r *Rbac) loadClusterRole(path string) ([]runtime.Object, error) {
log.Debug().Msgf("LOAD-CR %q", path)
o, err := r.getFactory().Get(crGVR, path, true, labels.Everything())
if err != nil {
return nil, err
}
var cr rbacv1.ClusterRole
err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &cr)
if err != nil {
return nil, err
}
return asRuntimeObjects(parseRules(client.ClusterScope, "-", cr.Rules)), nil
}
func (r *Rbac) loadRole(path string) ([]runtime.Object, error) {
o, err := r.getFactory().Get(rGVR, path, true, labels.Everything())
if err != nil {
return nil, err
}
var ro rbacv1.Role
err = runtime.DefaultUnstructuredConverter.FromUnstructured(o.(*unstructured.Unstructured).Object, &ro)
if err != nil {
return nil, err
}
return asRuntimeObjects(parseRules(client.ClusterScope, "-", ro.Rules)), nil
}
func asRuntimeObjects(rr render.Policies) []runtime.Object {
oo := make([]runtime.Object, len(rr))
for i, r := range rr {
oo[i] = r
}
return oo
}
func parseRules(ns, binding string, rules []rbacv1.PolicyRule) render.Policies {
pp := make(render.Policies, 0, len(rules))
for _, rule := range rules {
for _, grp := range rule.APIGroups {
for _, res := range rule.Resources {
for _, na := range rule.ResourceNames {
pp = pp.Upsert(render.NewPolicyRes(ns, binding, FQN(res, na), grp, rule.Verbs))
}
pp = pp.Upsert(render.NewPolicyRes(ns, binding, FQN(grp, res), grp, rule.Verbs))
}
}
for _, nres := range rule.NonResourceURLs {
if nres[0] != '/' {
nres = "/" + nres
}
pp = pp.Upsert(render.NewPolicyRes(ns, binding, nres, client.NA, rule.Verbs))
}
}
return pp
}