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// Copyright 2016 Google LLC. All Rights Reserved.
//
// 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 fixchain
import (
"sync"
"github.com/google/certificate-transparency-go/x509"
)
type dedupedChain struct {
certs []*x509.Certificate
}
func (d *dedupedChain) addCert(cert *x509.Certificate) {
// Check that the certificate isn't being added twice.
for _, c := range d.certs {
if c.Equal(cert) {
return
}
}
d.certs = append(d.certs, cert)
}
func (d *dedupedChain) addCertToFront(cert *x509.Certificate) {
// Check that the certificate isn't being added twice.
for _, c := range d.certs {
if c.Equal(cert) {
return
}
}
d.certs = append([]*x509.Certificate{cert}, d.certs...)
}
func newDedupedChain(chain []*x509.Certificate) *dedupedChain {
d := &dedupedChain{}
for _, cert := range chain {
d.addCert(cert)
}
return d
}
type lockedMap struct {
m map[[hashSize]byte]bool
sync.RWMutex
}
func newLockedMap() *lockedMap {
return &lockedMap{m: make(map[[hashSize]byte]bool)}
}
func (m *lockedMap) get(hash [hashSize]byte) bool {
m.RLock()
defer m.RUnlock()
return m.m[hash]
}
func (m *lockedMap) set(hash [hashSize]byte, b bool) {
m.Lock()
defer m.Unlock()
m.m[hash] = b
}
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