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https://github.com/gogrlx/nats-server.git
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840c264f45
One should not access s.opts directly but instead use s.getOpts(). Also, server lock needs to be released when performing an account lookup (since this may result in server lock being acquired). A function was calling s.LookupAccount under the client lock, which technically creates a lock inversion situation. Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
// Copyright 2018 The NATS 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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package server
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import (
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"crypto/rand"
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"encoding/base64"
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)
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// Raw length of the nonce challenge
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const (
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nonceRawLen = 11
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nonceLen = 15 // base64.RawURLEncoding.EncodedLen(nonceRawLen)
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)
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// NonceRequired tells us if we should send a nonce.
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func (s *Server) NonceRequired() bool {
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s.mu.Lock()
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defer s.mu.Unlock()
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return s.nonceRequired()
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}
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// nonceRequired tells us if we should send a nonce.
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// Lock should be held on entry.
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func (s *Server) nonceRequired() bool {
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return s.getOpts().AlwaysEnableNonce || len(s.nkeys) > 0 || s.trustedKeys != nil
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}
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// Generate a nonce for INFO challenge.
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// Assumes server lock is held
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func (s *Server) generateNonce(n []byte) {
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var raw [nonceRawLen]byte
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data := raw[:]
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rand.Read(data)
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base64.RawURLEncoding.Encode(n, data)
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}
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