mirror of
https://github.com/gravitl/netmaker.git
synced 2025-11-01 00:49:04 +08:00
104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
package mq
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/gravitl/netmaker/logic"
|
|
"github.com/gravitl/netmaker/models"
|
|
"github.com/gravitl/netmaker/netclient/ncutils"
|
|
)
|
|
|
|
func decryptMsgWithHost(host *models.Host, msg []byte) ([]byte, error) {
|
|
if host.OS == models.OS_Types.IoT { // just pass along IoT messages
|
|
return msg, nil
|
|
}
|
|
|
|
trafficKey, trafficErr := logic.RetrievePrivateTrafficKey() // get server private key
|
|
if trafficErr != nil {
|
|
return nil, trafficErr
|
|
}
|
|
serverPrivTKey, err := ncutils.ConvertBytesToKey(trafficKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
nodePubTKey, err := ncutils.ConvertBytesToKey(host.TrafficKeyPublic)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return ncutils.DeChunk(msg, nodePubTKey, serverPrivTKey)
|
|
}
|
|
|
|
func decryptMsg(node *models.Node, msg []byte) ([]byte, error) {
|
|
if len(msg) <= 24 { // make sure message is of appropriate length
|
|
return nil, fmt.Errorf("recieved invalid message from broker %v", msg)
|
|
}
|
|
host, err := logic.GetHost(node.HostID.String())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return decryptMsgWithHost(host, msg)
|
|
}
|
|
|
|
func encryptMsg(host *models.Host, msg []byte) ([]byte, error) {
|
|
if host.OS == models.OS_Types.IoT {
|
|
return msg, nil
|
|
}
|
|
|
|
// fetch server public key to be certain hasn't changed in transit
|
|
trafficKey, trafficErr := logic.RetrievePrivateTrafficKey()
|
|
if trafficErr != nil {
|
|
return nil, trafficErr
|
|
}
|
|
|
|
serverPrivKey, err := ncutils.ConvertBytesToKey(trafficKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
nodePubKey, err := ncutils.ConvertBytesToKey(host.TrafficKeyPublic)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if strings.Contains(host.Version, "0.10.0") {
|
|
return ncutils.BoxEncrypt(msg, nodePubKey, serverPrivKey)
|
|
}
|
|
|
|
return ncutils.Chunk(msg, nodePubKey, serverPrivKey)
|
|
}
|
|
|
|
func publish(host *models.Host, dest string, msg []byte) error {
|
|
encrypted, encryptErr := encryptMsg(host, msg)
|
|
if encryptErr != nil {
|
|
return encryptErr
|
|
}
|
|
if mqclient == nil {
|
|
return errors.New("cannot publish ... mqclient not connected")
|
|
}
|
|
if token := mqclient.Publish(dest, 0, true, encrypted); !token.WaitTimeout(MQ_TIMEOUT*time.Second) || token.Error() != nil {
|
|
var err error
|
|
if token.Error() == nil {
|
|
err = errors.New("connection timeout")
|
|
} else {
|
|
err = token.Error()
|
|
}
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// decodes a message queue topic and returns the embedded node.ID
|
|
func getID(topic string) (string, error) {
|
|
parts := strings.Split(topic, "/")
|
|
count := len(parts)
|
|
if count == 1 {
|
|
return "", fmt.Errorf("invalid topic")
|
|
}
|
|
//the last part of the topic will be the node.ID
|
|
return parts[count-1], nil
|
|
}
|