80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package ssh
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import (
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"context"
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"errors"
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"net"
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"github.com/go-gost/gost/pkg/connector"
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ssh_util "github.com/go-gost/gost/pkg/internal/util/ssh"
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"github.com/go-gost/gost/pkg/logger"
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md "github.com/go-gost/gost/pkg/metadata"
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"github.com/go-gost/gost/pkg/registry"
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)
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func init() {
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registry.RegiserConnector("sshd", NewConnector)
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}
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type forwardConnector struct {
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logger logger.Logger
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}
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func NewConnector(opts ...connector.Option) connector.Connector {
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options := &connector.Options{}
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for _, opt := range opts {
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opt(options)
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}
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return &forwardConnector{
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logger: options.Logger,
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}
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}
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func (c *forwardConnector) Init(md md.Metadata) (err error) {
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return nil
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}
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func (c *forwardConnector) Connect(ctx context.Context, conn net.Conn, network, address string, opts ...connector.ConnectOption) (net.Conn, error) {
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c.logger = c.logger.WithFields(map[string]interface{}{
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"remote": conn.RemoteAddr().String(),
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"local": conn.LocalAddr().String(),
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"network": network,
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"address": address,
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})
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c.logger.Infof("connect %s/%s", address, network)
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cc, ok := conn.(*ssh_util.ClientConn)
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if !ok {
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return nil, errors.New("ssh: invalid connection")
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}
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conn, err := cc.Client().Dial(network, address)
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if err != nil {
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c.logger.Error(err)
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return nil, err
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}
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return conn, nil
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}
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// Bind implements connector.Binder.
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func (c *forwardConnector) Bind(ctx context.Context, conn net.Conn, network, address string, opts ...connector.BindOption) (net.Listener, error) {
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c.logger = c.logger.WithFields(map[string]interface{}{
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"network": network,
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"address": address,
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})
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c.logger.Infof("bind on %s/%s", address, network)
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cc, ok := conn.(*ssh_util.ClientConn)
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if !ok {
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return nil, errors.New("ssh: invalid connection")
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}
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if host, port, _ := net.SplitHostPort(address); host == "" {
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address = net.JoinHostPort("0.0.0.0", port)
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}
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return cc.Client().Listen(network, address)
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}
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