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insecurewebsockethandler.go
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/
insecurewebsockethandler.go
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package handlers
import (
"encoding/json"
"encoding/pem"
"fmt"
"net/http"
"strings"
"github.com/sirupsen/logrus"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/ca"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/helpers"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/interfaces"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/models"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/store"
"github.com/stampzilla/stampzilla-go/v2/nodes/stampzilla-server/websocket"
)
type insecureWebsocketHandler struct {
Store *store.Store
Config *models.Config
WebsocketSender websocket.Sender
ca *ca.CA
}
func NewInSecureWebsockerHandler(store *store.Store, config *models.Config, ws websocket.Sender, ca *ca.CA) WebsocketHandler {
return &insecureWebsocketHandler{
Store: store,
Config: config,
WebsocketSender: ws,
ca: ca,
}
}
func (wsh *insecureWebsocketHandler) Message(s interfaces.MelodySession, msg *models.Message) (json.RawMessage, error) {
// client requested certificate. We must approve manually
if msg.Type == "certificate-signing-request" {
var body models.Request
err := json.Unmarshal(msg.Body, &body)
if err != nil {
logrus.Error(err)
return nil, nil
}
cert := &strings.Builder{}
id, _ := s.Get(websocket.KeyID.String())
go func() {
err := wsh.ca.CreateCertificateFromRequest(cert, id.(string), body)
if err != nil {
return
}
// send certificate to node
err = wsh.WebsocketSender.SendToID(msg.FromUUID, "approved-certificate-signing-request", cert.String())
if err != nil {
return
}
// send ca to node
ca := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: wsh.ca.CAX509.Raw})
err = wsh.WebsocketSender.SendToID(msg.FromUUID, "certificate-authority", string(ca))
if err != nil {
return
}
}()
return nil, nil
}
logrus.Warn("Unsecure ws sent data: ", msg)
return nil, fmt.Errorf("unknown request %s", msg.Type)
}
func (wsh *insecureWebsocketHandler) Connect(s interfaces.MelodySession, r *http.Request, keys map[string]interface{}) error {
logrus.Debug("ws handle insecure connect")
msg, err := models.NewMessage("server-info", models.ServerInfo{
Name: wsh.Config.Name,
UUID: wsh.Config.UUID,
TLSPort: wsh.Config.TLSPort,
Port: wsh.Config.Port,
Init: wsh.Store.CountAdmins() < 1,
AllowLogin: helpers.IsPrivateIP(r.RemoteAddr),
})
if err != nil {
return err
}
return msg.WriteTo(s)
}
func (wsh *insecureWebsocketHandler) Disconnect(s interfaces.MelodySession) error {
id, _ := s.Get(websocket.KeyID.String())
wsh.Store.RemoveRequest(id.(string), false)
return nil
}