mirror of
https://github.com/fatedier/frp.git
synced 2025-05-07 14:58:28 +00:00
93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
// Copyright 2025 The frp Authors
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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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//go:build !frps
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package client
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import (
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"context"
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"io"
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"sync"
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v1 "github.com/fatedier/frp/pkg/config/v1"
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)
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func init() {
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Register(v1.PluginVirtualNet, NewVirtualNetPlugin)
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}
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type VirtualNetPlugin struct {
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pluginCtx PluginContext
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opts *v1.VirtualNetPluginOptions
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mu sync.Mutex
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conns map[io.ReadWriteCloser]struct{}
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}
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func NewVirtualNetPlugin(pluginCtx PluginContext, options v1.ClientPluginOptions) (Plugin, error) {
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opts := options.(*v1.VirtualNetPluginOptions)
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p := &VirtualNetPlugin{
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pluginCtx: pluginCtx,
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opts: opts,
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}
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return p, nil
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}
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func (p *VirtualNetPlugin) Handle(ctx context.Context, connInfo *ConnectionInfo) {
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// Verify if virtual network controller is available
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if p.pluginCtx.VnetController == nil {
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return
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}
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// Add the connection before starting the read loop to avoid race condition
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// where RemoveConn might be called before the connection is added.
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p.mu.Lock()
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if p.conns == nil {
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p.conns = make(map[io.ReadWriteCloser]struct{})
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}
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p.conns[connInfo.Conn] = struct{}{}
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p.mu.Unlock()
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// Register the connection with the controller and pass the cleanup function
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p.pluginCtx.VnetController.StartServerConnReadLoop(ctx, connInfo.Conn, func() {
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p.RemoveConn(connInfo.Conn)
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})
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}
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func (p *VirtualNetPlugin) RemoveConn(conn io.ReadWriteCloser) {
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p.mu.Lock()
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defer p.mu.Unlock()
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// Check if the map exists, as Close might have set it to nil concurrently
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if p.conns != nil {
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delete(p.conns, conn)
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}
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}
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func (p *VirtualNetPlugin) Name() string {
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return v1.PluginVirtualNet
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}
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func (p *VirtualNetPlugin) Close() error {
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p.mu.Lock()
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defer p.mu.Unlock()
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// Close any remaining connections
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for conn := range p.conns {
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_ = conn.Close()
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}
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p.conns = nil
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return nil
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}
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