converge/pkg/comms/events.go
Erik Brakkee 621bbd8ca6 GOB channel for easily and asynchronously using GOB on a single network connection, also dealing with timeouts and errors in a good way.
Protocol version is now checked when the agent connects to the converge server.

Next up: sending connection metadata and username password from server to agent and sending environment information back to the server. This means then that the side channel will only be used for expiry time messages and session type with the client id passed in so the converge server can than correlate the results back to the correct channel.
2024-07-27 11:21:35 +02:00

96 lines
1.6 KiB
Go

package comms
import (
"encoding/gob"
"os"
"os/user"
"runtime"
"time"
)
const PROTOCOL_VERSION = 1
func init() {
RegisterEventsWithGob()
}
// Client to server events
type AgentInfo struct {
Username string
Hostname string
Pwd string
OS string
}
type SessionInfo struct {
// "ssh", "sftp"
SessionType string
}
type ExpiryTimeUpdate struct {
ExpiryTime time.Time
}
type HeartBeat struct {
// Empty
}
// Message sent from converge server to agent
type ProtocolVersion struct {
Version int
}
type UserPassword struct {
Username string
Password string
}
type ConnectionInfo struct {
ConnectionId int
UserPassword UserPassword
}
// Generic wrapper message required to send messages of arbitrary type
type ConvergeMessage struct {
Value interface{}
}
func NewAgentInfo() AgentInfo {
username, _ := user.Current()
host, _ := os.Hostname()
pwd, _ := os.Getwd()
return AgentInfo{
Username: username.Username,
Hostname: host,
Pwd: pwd,
OS: runtime.GOOS,
}
}
func NewSessionInfo(sessionType string) SessionInfo {
return SessionInfo{SessionType: sessionType}
}
func NewExpiryTimeUpdate(expiryTime time.Time) ExpiryTimeUpdate {
return ExpiryTimeUpdate{ExpiryTime: expiryTime}
}
func RegisterEventsWithGob() {
// Agent to ConvergeServer
gob.Register(AgentInfo{})
gob.Register(SessionInfo{})
gob.Register(ExpiryTimeUpdate{})
gob.Register(HeartBeat{})
// ConvergeServer to Agent
gob.Register(ProtocolVersion{})
gob.Register(UserPassword{})
gob.Register(ConnectionInfo{})
// Wrapper event.
gob.Register(ConvergeMessage{})
}