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96 lines
2.4 KiB
96 lines
2.4 KiB
// Copyright 2019 fatedier, fatedier@gmail.com |
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// |
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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 visitor |
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import ( |
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"fmt" |
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"io" |
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"net" |
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"sync" |
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libio "github.com/fatedier/golib/io" |
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utilnet "github.com/fatedier/frp/pkg/util/net" |
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"github.com/fatedier/frp/pkg/util/util" |
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) |
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// Manager for visitor listeners. |
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type Manager struct { |
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visitorListeners map[string]*utilnet.InternalListener |
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skMap map[string]string |
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mu sync.RWMutex |
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} |
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func NewManager() *Manager { |
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return &Manager{ |
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visitorListeners: make(map[string]*utilnet.InternalListener), |
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skMap: make(map[string]string), |
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} |
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} |
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func (vm *Manager) Listen(name string, sk string) (l *utilnet.InternalListener, err error) { |
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vm.mu.Lock() |
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defer vm.mu.Unlock() |
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if _, ok := vm.visitorListeners[name]; ok { |
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err = fmt.Errorf("custom listener for [%s] is repeated", name) |
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return |
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} |
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l = utilnet.NewInternalListener() |
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vm.visitorListeners[name] = l |
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vm.skMap[name] = sk |
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return |
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} |
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func (vm *Manager) NewConn(name string, conn net.Conn, timestamp int64, signKey string, |
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useEncryption bool, useCompression bool, |
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) (err error) { |
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vm.mu.RLock() |
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defer vm.mu.RUnlock() |
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if l, ok := vm.visitorListeners[name]; ok { |
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var sk string |
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if sk = vm.skMap[name]; util.GetAuthKey(sk, timestamp) != signKey { |
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err = fmt.Errorf("visitor connection of [%s] auth failed", name) |
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return |
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} |
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var rwc io.ReadWriteCloser = conn |
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if useEncryption { |
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if rwc, err = libio.WithEncryption(rwc, []byte(sk)); err != nil { |
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err = fmt.Errorf("create encryption connection failed: %v", err) |
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return |
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} |
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} |
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if useCompression { |
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rwc = libio.WithCompression(rwc) |
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} |
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err = l.PutConn(utilnet.WrapReadWriteCloserToConn(rwc, conn)) |
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} else { |
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err = fmt.Errorf("custom listener for [%s] doesn't exist", name) |
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return |
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} |
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return |
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} |
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func (vm *Manager) CloseListener(name string) { |
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vm.mu.Lock() |
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defer vm.mu.Unlock() |
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delete(vm.visitorListeners, name) |
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delete(vm.skMap, name) |
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}
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