forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 1
/
helpers.go
283 lines (237 loc) · 8.14 KB
/
helpers.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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
package authorization
import (
"fmt"
"strings"
"k8s.io/apimachinery/pkg/api/validation/path"
"k8s.io/apimachinery/pkg/util/sets"
kapi "k8s.io/kubernetes/pkg/apis/core"
"github.com/openshift/origin/pkg/authorization/apis/authorization/internal/serviceaccount"
)
func (r PolicyRule) String() string {
return "PolicyRule" + r.CompactString()
}
// CompactString exposes a compact string representation for use in escalation error messages
func (r PolicyRule) CompactString() string {
formatStringParts := []string{}
formatArgs := []interface{}{}
if len(r.Verbs) > 0 {
formatStringParts = append(formatStringParts, "Verbs:%q")
formatArgs = append(formatArgs, r.Verbs.List())
}
if len(r.APIGroups) > 0 {
formatStringParts = append(formatStringParts, "APIGroups:%q")
formatArgs = append(formatArgs, r.APIGroups)
}
if len(r.Resources) > 0 {
formatStringParts = append(formatStringParts, "Resources:%q")
formatArgs = append(formatArgs, r.Resources.List())
}
if len(r.ResourceNames) > 0 {
formatStringParts = append(formatStringParts, "ResourceNames:%q")
formatArgs = append(formatArgs, r.ResourceNames.List())
}
if r.AttributeRestrictions != nil {
formatStringParts = append(formatStringParts, "Restrictions:%q")
formatArgs = append(formatArgs, r.AttributeRestrictions)
}
if len(r.NonResourceURLs) > 0 {
formatStringParts = append(formatStringParts, "NonResourceURLs:%q")
formatArgs = append(formatArgs, r.NonResourceURLs.List())
}
formatString := "{" + strings.Join(formatStringParts, ", ") + "}"
return fmt.Sprintf(formatString, formatArgs...)
}
type PolicyBindingSorter []PolicyBinding
func (s PolicyBindingSorter) Len() int {
return len(s)
}
func (s PolicyBindingSorter) Less(i, j int) bool {
return s[i].Name < s[j].Name
}
func (s PolicyBindingSorter) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
type RoleBindingSorter []RoleBinding
func (s RoleBindingSorter) Len() int {
return len(s)
}
func (s RoleBindingSorter) Less(i, j int) bool {
return s[i].Name < s[j].Name
}
func (s RoleBindingSorter) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
func GetPolicyBindingName(policyRefNamespace string) string {
return fmt.Sprintf("%s:%s", policyRefNamespace, PolicyName)
}
var ClusterPolicyBindingName = GetPolicyBindingName("")
func BuildSubjects(users, groups []string) []kapi.ObjectReference {
subjects := []kapi.ObjectReference{}
for _, user := range users {
saNamespace, saName, err := serviceaccount.SplitUsername(user)
if err == nil {
subjects = append(subjects, kapi.ObjectReference{Kind: ServiceAccountKind, Namespace: saNamespace, Name: saName})
continue
}
kind := determineUserKind(user)
subjects = append(subjects, kapi.ObjectReference{Kind: kind, Name: user})
}
for _, group := range groups {
kind := determineGroupKind(group)
subjects = append(subjects, kapi.ObjectReference{Kind: kind, Name: group})
}
return subjects
}
// duplicated from the user/validation package. We need to avoid api dependencies on validation from our types.
// These validators are stable and realistically can't change.
func validateUserName(name string, _ bool) []string {
if reasons := path.ValidatePathSegmentName(name, false); len(reasons) != 0 {
return reasons
}
if strings.Contains(name, ":") {
return []string{`may not contain ":"`}
}
if name == "~" {
return []string{`may not equal "~"`}
}
return nil
}
// duplicated from the user/validation package. We need to avoid api dependencies on validation from our types.
// These validators are stable and realistically can't change.
func validateGroupName(name string, _ bool) []string {
if reasons := path.ValidatePathSegmentName(name, false); len(reasons) != 0 {
return reasons
}
if strings.Contains(name, ":") {
return []string{`may not contain ":"`}
}
if name == "~" {
return []string{`may not equal "~"`}
}
return nil
}
func determineUserKind(user string) string {
kind := UserKind
if len(validateUserName(user, false)) != 0 {
kind = SystemUserKind
}
return kind
}
func determineGroupKind(group string) string {
kind := GroupKind
if len(validateGroupName(group, false)) != 0 {
kind = SystemGroupKind
}
return kind
}
// StringSubjectsFor returns users and groups for comparison against user.Info. currentNamespace is used to
// to create usernames for service accounts where namespace=="".
func StringSubjectsFor(currentNamespace string, subjects []kapi.ObjectReference) ([]string, []string) {
// these MUST be nil to indicate empty
var users, groups []string
for _, subject := range subjects {
switch subject.Kind {
case ServiceAccountKind:
namespace := currentNamespace
if len(subject.Namespace) > 0 {
namespace = subject.Namespace
}
if len(namespace) > 0 {
users = append(users, serviceaccount.MakeUsername(namespace, subject.Name))
}
case UserKind, SystemUserKind:
users = append(users, subject.Name)
case GroupKind, SystemGroupKind:
groups = append(groups, subject.Name)
}
}
return users, groups
}
// SubjectsStrings returns users, groups, serviceaccounts, unknown for display purposes. currentNamespace is used to
// hide the subject.Namespace for ServiceAccounts in the currentNamespace
func SubjectsStrings(currentNamespace string, subjects []kapi.ObjectReference) ([]string, []string, []string, []string) {
users := []string{}
groups := []string{}
sas := []string{}
others := []string{}
for _, subject := range subjects {
switch subject.Kind {
case ServiceAccountKind:
if len(subject.Namespace) > 0 && currentNamespace != subject.Namespace {
sas = append(sas, subject.Namespace+"/"+subject.Name)
} else {
sas = append(sas, subject.Name)
}
case UserKind, SystemUserKind:
users = append(users, subject.Name)
case GroupKind, SystemGroupKind:
groups = append(groups, subject.Name)
default:
others = append(others, fmt.Sprintf("%s/%s/%s", subject.Kind, subject.Namespace, subject.Name))
}
}
return users, groups, sas, others
}
// +gencopy=false
// PolicyRuleBuilder let's us attach methods. A no-no for API types
type PolicyRuleBuilder struct {
PolicyRule PolicyRule
}
func NewRule(verbs ...string) *PolicyRuleBuilder {
return &PolicyRuleBuilder{
PolicyRule: PolicyRule{
Verbs: sets.NewString(verbs...),
Resources: sets.String{},
ResourceNames: sets.String{},
},
}
}
func (r *PolicyRuleBuilder) Groups(groups ...string) *PolicyRuleBuilder {
r.PolicyRule.APIGroups = append(r.PolicyRule.APIGroups, groups...)
return r
}
func (r *PolicyRuleBuilder) Resources(resources ...string) *PolicyRuleBuilder {
r.PolicyRule.Resources.Insert(resources...)
return r
}
func (r *PolicyRuleBuilder) Names(names ...string) *PolicyRuleBuilder {
r.PolicyRule.ResourceNames.Insert(names...)
return r
}
func (r *PolicyRuleBuilder) RuleOrDie() PolicyRule {
ret, err := r.Rule()
if err != nil {
panic(err)
}
return ret
}
func (r *PolicyRuleBuilder) Rule() (PolicyRule, error) {
if r.PolicyRule.AttributeRestrictions != nil {
return PolicyRule{}, fmt.Errorf("rule may not have attributeRestrictions because they are deprecated and ignored: %#v", r.PolicyRule)
}
if len(r.PolicyRule.Verbs) == 0 {
return PolicyRule{}, fmt.Errorf("verbs are required: %#v", r.PolicyRule)
}
switch {
case len(r.PolicyRule.NonResourceURLs) > 0:
if len(r.PolicyRule.APIGroups) != 0 || len(r.PolicyRule.Resources) != 0 || len(r.PolicyRule.ResourceNames) != 0 {
return PolicyRule{}, fmt.Errorf("non-resource rule may not have apiGroups, resources, or resourceNames: %#v", r.PolicyRule)
}
case len(r.PolicyRule.Resources) > 0:
if len(r.PolicyRule.NonResourceURLs) != 0 {
return PolicyRule{}, fmt.Errorf("resource rule may not have nonResourceURLs: %#v", r.PolicyRule)
}
if len(r.PolicyRule.APIGroups) == 0 {
return PolicyRule{}, fmt.Errorf("resource rule must have apiGroups: %#v", r.PolicyRule)
}
default:
return PolicyRule{}, fmt.Errorf("a rule must have either nonResourceURLs or resources: %#v", r.PolicyRule)
}
return r.PolicyRule, nil
}
type SortableRuleSlice []PolicyRule
func (s SortableRuleSlice) Len() int { return len(s) }
func (s SortableRuleSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s SortableRuleSlice) Less(i, j int) bool {
return strings.Compare(s[i].String(), s[j].String()) < 0
}