polemos/main.go

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package main
import (
"fmt"
"net/netip"
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"time"
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"github.com/google/uuid"
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"github.com/thefeli73/polemos/mtdaws"
"github.com/thefeli73/polemos/pcsdk"
"github.com/thefeli73/polemos/state"
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)
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// ConfigPath is a string of the location for the configfile
var ConfigPath string
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func main() {
fmt.Println("Starting Polemos")
ConfigPath = "config.yaml"
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// 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)
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config = indexAllInstances(config)
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state.SaveConf(ConfigPath, config)
// CREATE TUNNELS
createTunnels(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)
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fmt.Println("Sleeping for 1 minute")
time.Sleep(1*time.Minute)
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//TODO: proxy commands
}
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}
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func movingTargetDefense(config state.Config) state.Config{
mtdaws.AWSMoveInstance(config)
return config
}
func indexAllInstances(config state.Config) state.Config {
fmt.Println("Indexing instances")
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t := time.Now()
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for _, service := range config.MTD.Services {
service.Active = false
}
//index AWS instances
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awsNewInstanceCounter := 0
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awsInactiveInstanceCounter := len(config.MTD.Services)
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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
}
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var found bool
config, found = indexInstance(config, cloudID, ip)
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if !found {
awsNewInstanceCounter++
} else {
awsInactiveInstanceCounter--
}
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awsInstanceCounter++
}
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// TODO: Purge instances in config that are not found in the cloud
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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())
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return config
}
func createTunnels(config state.Config) {
for serviceUUID, service := range config.MTD.Services {
if service.AdminEnabled && service.Active {
proxy := pcsdk.BuildProxy(netip.AddrPortFrom(service.EntryIP, config.MTD.ManagementPort))
err := proxy.Status()
if err != nil {
continue
}
// Reconfigure Proxy to new instance
err = proxy.Create(service.EntryPort, service.ServicePort, service.ServiceIP, serviceUUID)
if err != nil {
continue
}
}
}
}
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func indexInstance(config state.Config, cloudID string, serviceIP netip.Addr) (state.Config, bool) {
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found := false
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var foundUUID state.CustomUUID
for u, service := range config.MTD.Services {
if service.CloudID == cloudID {
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found = true
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foundUUID = u
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break;
}
}
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if !found {
fmt.Println("New instance found:\t", cloudID)
u := uuid.New()
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config.MTD.Services[state.CustomUUID(u)] = state.Service{CloudID: cloudID, ServiceIP: serviceIP, Active: true, AdminEnabled: true}
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state.SaveConf(ConfigPath, config)
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} else {
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s := config.MTD.Services[foundUUID]
s.Active = true
config.MTD.Services[foundUUID] = s
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state.SaveConf(ConfigPath, config)
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}
return config, found
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}