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state.go
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state.go
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package state
import (
"encoding/json"
"github.com/datadog/stratus-red-team/v2/internal/utils"
"github.com/datadog/stratus-red-team/v2/pkg/stratus"
"log"
"os"
"path/filepath"
)
const StratusStateDirectoryName = ".stratus-red-team"
const StratusStateTerraformOutputsFileName = ".terraform-outputs"
const StratusStateTechniqueStateFileName = ".state"
const StratusStateTerraformFileName = "main.tf"
type FileSystemStateManager struct {
RootDirectory string
Technique *stratus.AttackTechnique
FileSystem FileSystem
}
type FileSystem interface {
FileExists(string) bool
CreateDirectory(string, os.FileMode) error
RemoveDirectory(string) error
WriteFile(string, []byte, os.FileMode) error
ReadFile(string) ([]byte, error)
}
type LocalFileSystem struct{}
func (m *LocalFileSystem) FileExists(fileName string) bool {
return utils.FileExists(fileName)
}
func (m *LocalFileSystem) CreateDirectory(dir string, mode os.FileMode) error {
return os.Mkdir(dir, mode)
}
func (m *LocalFileSystem) RemoveDirectory(dir string) error {
return os.RemoveAll(dir)
}
func (m *LocalFileSystem) WriteFile(file string, content []byte, mode os.FileMode) error {
return os.WriteFile(file, content, mode)
}
func (m *LocalFileSystem) ReadFile(file string) ([]byte, error) {
return os.ReadFile(file)
}
type StateManager interface {
Initialize()
GetRootDirectory() string
ExtractTechnique() error
CleanupTechnique() error
GetTerraformOutputs() (map[string]string, error)
WriteTerraformOutputs(outputs map[string]string) error
GetTechniqueState() stratus.AttackTechniqueState
SetTechniqueState(state stratus.AttackTechniqueState) error
}
func NewFileSystemStateManager(technique *stratus.AttackTechnique) *FileSystemStateManager {
homeDirectory, _ := os.UserHomeDir()
stateManager := FileSystemStateManager{
RootDirectory: filepath.Join(homeDirectory, StratusStateDirectoryName),
Technique: technique,
FileSystem: &LocalFileSystem{},
}
stateManager.Initialize()
return &stateManager
}
func (m *FileSystemStateManager) Initialize() {
if !m.FileSystem.FileExists(m.RootDirectory) {
log.Println("Creating " + m.RootDirectory + " as it doesn't exist yet")
err := m.FileSystem.CreateDirectory(m.RootDirectory, 0744)
if err != nil {
panic("Unable to create persistent directory: " + err.Error())
}
}
if !m.FileSystem.FileExists(m.getTechniqueStateDirectory()) {
err := m.FileSystem.CreateDirectory(m.getTechniqueStateDirectory(), 0744)
if err != nil {
panic("Unable to create persistent directory: " + err.Error())
}
}
}
func (m *FileSystemStateManager) ExtractTechnique() error {
terraformDirectory := m.getTechniqueStateDirectory()
terraformFile := filepath.Join(terraformDirectory, StratusStateTerraformFileName)
return m.FileSystem.WriteFile(terraformFile, m.Technique.PrerequisitesTerraformCode, 0644)
}
func (m *FileSystemStateManager) CleanupTechnique() error {
return m.FileSystem.RemoveDirectory(m.getTechniqueStateDirectory())
}
func (m *FileSystemStateManager) GetTerraformOutputs() (map[string]string, error) {
outputPath := m.getOutputsStateFile()
outputs := make(map[string]string)
// If we have persisted Terraform outputs on disk, read them
if m.FileSystem.FileExists(outputPath) {
outputString, err := m.FileSystem.ReadFile(outputPath)
if err != nil {
return nil, err
}
err = json.Unmarshal(outputString, &outputs)
if err != nil {
return nil, err
}
}
return outputs, nil
}
func (m *FileSystemStateManager) WriteTerraformOutputs(outputs map[string]string) error {
outputString, err := json.Marshal(outputs)
if err != nil {
return err
}
return m.FileSystem.WriteFile(m.getOutputsStateFile(), outputString, 0744)
}
func (m *FileSystemStateManager) GetTechniqueState() stratus.AttackTechniqueState {
rawState, _ := m.FileSystem.ReadFile(m.getTechniqueStateFile())
return stratus.AttackTechniqueState(rawState)
}
func (m *FileSystemStateManager) SetTechniqueState(state stratus.AttackTechniqueState) error {
return m.FileSystem.WriteFile(m.getTechniqueStateFile(), []byte(state), 0744)
}
func (m *FileSystemStateManager) getTechniqueStateDirectory() string {
return filepath.Join(m.RootDirectory, m.Technique.ID)
}
func (m *FileSystemStateManager) getTechniqueStateFile() string {
return filepath.Join(m.RootDirectory, m.Technique.ID, StratusStateTechniqueStateFileName)
}
func (m *FileSystemStateManager) getOutputsStateFile() string {
return filepath.Join(m.RootDirectory, m.Technique.ID, StratusStateTerraformOutputsFileName)
}
func (m *FileSystemStateManager) GetRootDirectory() string {
return m.RootDirectory
}