127 lines
3.4 KiB
Go
127 lines
3.4 KiB
Go
/*
|
|
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 muthual autentication
|
|
// and the configured ValidationDepth
|
|
type Config struct {
|
|
resolver.AuthSSLCert
|
|
VerifyClient string `json:"verify_client"`
|
|
ValidationDepth int `json:"validationDepth"`
|
|
ErrorPage string `json:"errorPage"`
|
|
}
|
|
|
|
// 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
|
|
}
|
|
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) {
|
|
|
|
tlsauthsecret, err := parser.GetStringAnnotation(a.r.GetAnnotationWithPrefix("auth-tls-secret"), ing, a.r)
|
|
if err != nil {
|
|
return &Config{}, err
|
|
}
|
|
|
|
if tlsauthsecret == "" {
|
|
return &Config{}, ing_errors.NewLocationDenied("an empty string is not a valid secret name")
|
|
}
|
|
|
|
_, _, err = k8s.ParseNameNS(tlsauthsecret)
|
|
if err != nil {
|
|
return &Config{}, ing_errors.NewLocationDenied(err.Error())
|
|
}
|
|
|
|
tlsVerifyClient, err := parser.GetStringAnnotation("auth-tls-verify-client", ing, a.r)
|
|
if err != nil || !authVerifyClientRegex.MatchString(tlsVerifyClient) {
|
|
tlsVerifyClient = defaultAuthVerifyClient
|
|
}
|
|
|
|
tlsdepth, err := parser.GetIntAnnotation("auth-tls-verify-depth", ing, a.r)
|
|
if err != nil || tlsdepth == 0 {
|
|
tlsdepth = defaultAuthTLSDepth
|
|
}
|
|
|
|
authCert, err := a.r.GetAuthCertificate(tlsauthsecret)
|
|
if err != nil {
|
|
return &Config{}, ing_errors.LocationDenied{
|
|
Reason: errors.Wrap(err, "error obtaining certificate"),
|
|
}
|
|
}
|
|
|
|
errorpage, err := parser.GetStringAnnotation("auth-tls-error-page", ing, a.r)
|
|
if err != nil || errorpage == "" {
|
|
errorpage = ""
|
|
}
|
|
|
|
return &Config{
|
|
AuthSSLCert: *authCert,
|
|
VerifyClient: tlsVerifyClient,
|
|
ValidationDepth: tlsdepth,
|
|
ErrorPage: errorpage,
|
|
}, nil
|
|
}
|