mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package control
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/rancher/remotedialer"
|
|
"github.com/rancher/wrangler/pkg/kv"
|
|
utilnet "k8s.io/apimachinery/pkg/util/net"
|
|
"k8s.io/apiserver/pkg/endpoints/request"
|
|
"k8s.io/kubernetes/cmd/kube-apiserver/app"
|
|
)
|
|
|
|
func setupTunnel() http.Handler {
|
|
tunnelServer := remotedialer.New(authorizer, remotedialer.DefaultErrorWriter)
|
|
setupProxyDialer(tunnelServer)
|
|
return tunnelServer
|
|
}
|
|
|
|
func setupProxyDialer(tunnelServer *remotedialer.Server) {
|
|
app.DefaultProxyDialerFn = utilnet.DialFunc(func(_ context.Context, network, address string) (net.Conn, error) {
|
|
_, port, _ := net.SplitHostPort(address)
|
|
addr := "127.0.0.1"
|
|
if port != "" {
|
|
addr += ":" + port
|
|
}
|
|
nodeName, _ := kv.Split(address, ":")
|
|
return tunnelServer.Dial(nodeName, 15*time.Second, "tcp", addr)
|
|
})
|
|
}
|
|
|
|
func authorizer(req *http.Request) (clientKey string, authed bool, err error) {
|
|
user, ok := request.UserFrom(req.Context())
|
|
if !ok {
|
|
return "", false, nil
|
|
}
|
|
|
|
if user.GetName() != "node" {
|
|
return "", false, nil
|
|
}
|
|
|
|
nodeName := req.Header.Get("X-K3s-NodeName")
|
|
if nodeName == "" {
|
|
return "", false, nil
|
|
}
|
|
|
|
return nodeName, true, nil
|
|
}
|