forked from kubernetes/ingress-nginx
-
Notifications
You must be signed in to change notification settings - Fork 8
/
main.go
131 lines (108 loc) · 3.5 KB
/
main.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
/*
Copyright 2015 The Kubernetes 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 authtls
import (
"github.com/pkg/errors"
extensions "k8s.io/api/extensions/v1beta1"
"regexp"
"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
ing_errors "k8s.io/ingress-nginx/internal/ingress/errors"
"k8s.io/ingress-nginx/internal/ingress/resolver"
"k8s.io/ingress-nginx/internal/k8s"
)
const (
defaultAuthTLSDepth = 1
defaultAuthVerifyClient = "on"
)
var (
authVerifyClientRegex = regexp.MustCompile(`on|off|optional|optional_no_ca`)
)
// Config contains the AuthSSLCert used for mutual authentication
// and the configured ValidationDepth
type Config struct {
resolver.AuthSSLCert
VerifyClient string `json:"verify_client"`
ValidationDepth int `json:"validationDepth"`
ErrorPage string `json:"errorPage"`
PassCertToUpstream bool `json:"passCertToUpstream"`
AuthTLSError string
}
// Equal tests for equality between two Config types
func (assl1 *Config) Equal(assl2 *Config) bool {
if assl1 == assl2 {
return true
}
if assl1 == nil || assl2 == nil {
return false
}
if !(&assl1.AuthSSLCert).Equal(&assl2.AuthSSLCert) {
return false
}
if assl1.VerifyClient != assl2.VerifyClient {
return false
}
if assl1.ValidationDepth != assl2.ValidationDepth {
return false
}
if assl1.ErrorPage != assl2.ErrorPage {
return false
}
if assl1.PassCertToUpstream != assl2.PassCertToUpstream {
return false
}
return true
}
// NewParser creates a new TLS authentication annotation parser
func NewParser(resolver resolver.Resolver) parser.IngressAnnotation {
return authTLS{resolver}
}
type authTLS struct {
r resolver.Resolver
}
// Parse parses the annotations contained in the ingress
// rule used to use a Certificate as authentication method
func (a authTLS) Parse(ing *extensions.Ingress) (interface{}, error) {
var err error
config := &Config{}
tlsauthsecret, err := parser.GetStringAnnotation("auth-tls-secret", ing)
if err != nil {
return &Config{}, err
}
_, _, err = k8s.ParseNameNS(tlsauthsecret)
if err != nil {
return &Config{}, ing_errors.NewLocationDenied(err.Error())
}
authCert, err := a.r.GetAuthCertificate(tlsauthsecret)
if err != nil {
e := errors.Wrap(err, "error obtaining certificate")
return &Config{}, ing_errors.LocationDenied{Reason: e}
}
config.AuthSSLCert = *authCert
config.VerifyClient, err = parser.GetStringAnnotation("auth-tls-verify-client", ing)
if err != nil || !authVerifyClientRegex.MatchString(config.VerifyClient) {
config.VerifyClient = defaultAuthVerifyClient
}
config.ValidationDepth, err = parser.GetIntAnnotation("auth-tls-verify-depth", ing)
if err != nil || config.ValidationDepth == 0 {
config.ValidationDepth = defaultAuthTLSDepth
}
config.ErrorPage, err = parser.GetStringAnnotation("auth-tls-error-page", ing)
if err != nil {
config.ErrorPage = ""
}
config.PassCertToUpstream, err = parser.GetBoolAnnotation("auth-tls-pass-certificate-to-upstream", ing)
if err != nil {
config.PassCertToUpstream = false
}
return config, nil
}