78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package secureupstream
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import (
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"fmt"
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"github.com/pkg/errors"
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extensions "k8s.io/api/extensions/v1beta1"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/parser"
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"k8s.io/ingress-nginx/pkg/ingress/resolver"
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)
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const (
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secureUpstream = "ingress.kubernetes.io/secure-backends"
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secureVerifyCASecret = "ingress.kubernetes.io/secure-verify-ca-secret"
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)
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// Secure describes SSL backend configuration
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type Secure struct {
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Secure bool `json:"secure"`
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CACert resolver.AuthSSLCert `json:"caCert"`
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}
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type su struct {
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certResolver resolver.AuthCertificate
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}
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// NewParser creates a new secure upstream annotation parser
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func NewParser(resolver resolver.AuthCertificate) parser.IngressAnnotation {
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return su{
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certResolver: resolver,
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}
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}
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// Parse parses the annotations contained in the ingress
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// rule used to indicate if the upstream servers should use SSL
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func (a su) Parse(ing *extensions.Ingress) (interface{}, error) {
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s, _ := parser.GetBoolAnnotation(secureUpstream, ing)
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ca, _ := parser.GetStringAnnotation(secureVerifyCASecret, ing)
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secure := &Secure{
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Secure: s,
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CACert: resolver.AuthSSLCert{},
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}
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if !s && ca != "" {
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return secure,
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errors.Errorf("trying to use CA from secret %v/%v on a non secure backend", ing.Namespace, ca)
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}
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if ca == "" {
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return secure, nil
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}
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caCert, err := a.certResolver.GetAuthCertificate(fmt.Sprintf("%v/%v", ing.Namespace, ca))
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if err != nil {
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return secure, errors.Wrap(err, "error obtaining certificate")
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}
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if caCert == nil {
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return secure, nil
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}
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return &Secure{
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Secure: s,
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CACert: *caCert,
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}, nil
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}
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