polemos/main.go
2023-04-19 11:39:11 +02:00

117 lines
2.7 KiB
Go

package main
import (
"fmt"
"net/netip"
"time"
"github.com/google/uuid"
"github.com/thefeli73/polemos/mtdaws"
"github.com/thefeli73/polemos/state"
)
// ConfigPath is a string of the location for the configfile
var ConfigPath string
func main() {
fmt.Println("Starting Polemos")
ConfigPath = "config.yaml"
// Initialize the config.Services map
var config state.Config
config.MTD.Services = make(map[state.CustomUUID]state.Service)
config = state.LoadConf(ConfigPath)
state.SaveConf(ConfigPath, config)
config = indexAllInstances(config)
state.SaveConf(ConfigPath, config)
// START DOING MTD
mtdLoop(config)
}
func mtdLoop(config state.Config) {
for true {
//TODO: figure out migration (MTD)
config = movingTargetDefense(config)
state.SaveConf(ConfigPath, config)
fmt.Println("Sleeping for 5 seconds")
time.Sleep(5*time.Second)
//TODO: proxy commands
}
}
func movingTargetDefense(config state.Config) state.Config{
mtdaws.AWSMoveInstance(config)
return config
}
func indexAllInstances(config state.Config) state.Config {
fmt.Println("Indexing instances")
t := time.Now()
for _, service := range config.MTD.Services {
service.Active = false
}
//index AWS instances
awsNewInstanceCounter := 0
awsInactiveInstanceCounter := len(config.MTD.Services)
awsInstanceCounter := 0
awsInstances := mtdaws.GetInstances(config)
for _, instance := range awsInstances {
cloudID := mtdaws.GetCloudID(instance)
ip, err := netip.ParseAddr(instance.PublicIP)
if err != nil {
fmt.Println("Error converting ip:\t", err)
continue
}
var found bool
config, found = indexInstance(config, cloudID, ip)
if !found {
awsNewInstanceCounter++
} else {
awsInactiveInstanceCounter--
}
awsInstanceCounter++
}
// TODO: Purge instances in config that are not found in the cloud
fmt.Printf("Found %d active AWS instances (%d newly added, %d inactive) (took %s)\n",
awsInstanceCounter, awsNewInstanceCounter, awsInactiveInstanceCounter, time.Since(t).Round(100*time.Millisecond).String())
return config
}
func indexInstance(config state.Config, cloudID string, serviceIP netip.Addr) (state.Config, bool) {
found := false
var foundUUID state.CustomUUID
for u, service := range config.MTD.Services {
if service.CloudID == cloudID {
found = true
foundUUID = u
break;
}
}
if !found {
fmt.Println("New instance found:\t", cloudID)
u := uuid.New()
config.MTD.Services[state.CustomUUID(u)] = state.Service{CloudID: cloudID, ServiceIP: serviceIP, Active: true, AdminEnabled: true}
state.SaveConf(ConfigPath, config)
} else {
s := config.MTD.Services[foundUUID]
s.Active = true
config.MTD.Services[foundUUID] = s
state.SaveConf(ConfigPath, config)
}
return config, found
}