fix(shutdown): Fix shutdown command

magicpacket/magicpacket.go

@@ -60,25 +60,52 @@ func ExtractAuthFromPacket(data []byte) (string, string, []byte, bool) {
 		return "", "", nil, false
 	}
 
-	// Extract authentication part
-	authEnd := strings.Index(dataStr[len(AuthPrefix):], ":")
-	if authEnd == -1 {
+	// Find the first colon after "AUTH:" (end of username)
+	searchStart := len(AuthPrefix)
+	firstColon := strings.Index(dataStr[searchStart:], ":")
+	if firstColon == -1 {
 		return "", "", nil, false
 	}
-	authEnd += len(AuthPrefix)
+	firstColon += searchStart
+
+	// Find the second colon after the first one (end of password)
+	secondColon := strings.Index(dataStr[firstColon+1:], ":")
+	if secondColon == -1 {
+		// If no second colon, the password might be followed directly by binary data
+		// In this case, we need to find where the magic packet starts (6 bytes of 0xFF)
+		// Look for the magic packet header starting after the password
+		passwordEnd := len(dataStr)
+		for i := firstColon + 1; i < len(data) && i < firstColon+100; i++ {
+			// Check if we found the magic packet header (6 consecutive 0xFF bytes)
+			if i+5 < len(data) {
+				allFF := true
+				for j := 0; j < 6; j++ {
+					if data[i+j] != 0xFF {
+						allFF = false
+						break
+					}
+				}
+				if allFF {
+					passwordEnd = i
+					break
+				}
+			}
+		}
+
+		username := dataStr[searchStart:firstColon]
+		password := dataStr[firstColon+1 : passwordEnd]
+		magicPacketData := data[passwordEnd:]
+
+		return username, password, magicPacketData, true
+	}
+	secondColon += firstColon + 1
 
 	// Extract username and password
-	authPart := dataStr[len(AuthPrefix):authEnd]
-	parts := strings.Split(authPart, ":")
-	if len(parts) != 2 {
-		return "", "", nil, false
-	}
-
-	username := parts[0]
-	password := parts[1]
+	username := dataStr[searchStart:firstColon]
+	password := dataStr[firstColon+1 : secondColon]
 
 	// Extract magic packet part (after "AUTH:username:password:")
-	magicPacketStart := authEnd + 1
+	magicPacketStart := secondColon + 1
 	if magicPacketStart >= len(data) {
 		return "", "", nil, false
 	}

server/udp.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"encoding/hex"
 	"fmt"
 	"net"
 	"time"
@@ -69,13 +70,30 @@ func (s *UDPServer) Start(done chan bool) {
 				continue
 			}
 
+			packetData := buffer[:n]
+
+			// Debug: Display packet content
+			hexDump := hex.EncodeToString(packetData)
+			// Also try to show as string (for auth part)
+			stringPreview := ""
+			if len(packetData) > 0 && packetData[0] < 128 {
+				// Only show string preview if it looks like printable ASCII
+				maxLen := len(packetData)
+				if maxLen > 100 {
+					maxLen = 100
+				}
+				stringPreview = string(packetData[:maxLen])
+			}
+
 			masterlog.Info("Received UDP packet", map[string]interface{}{
-				"bytes":   n,
-				"address": clientAddr,
+				"bytes":          n,
+				"address":        clientAddr,
+				"hex":            hexDump,
+				"string_preview": stringPreview,
 			})
 
 			// Check authentication and magic packet
-			if s.isValidAuthenticatedMagicPacket(buffer[:n]) {
+			if s.isValidAuthenticatedMagicPacket(packetData) {
 				masterlog.Info("Authenticated Magic Packet detected! Shutting down system...", map[string]interface{}{
 					"address": clientAddr,
 				})
@@ -94,14 +112,38 @@ func (s *UDPServer) Start(done chan bool) {
 func (s *UDPServer) isValidAuthenticatedMagicPacket(data []byte) bool {
 	username, password, magicPacketData, ok := magicpacket.ExtractAuthFromPacket(data)
 	if !ok {
+		masterlog.Info("Packet does not contain valid auth format", map[string]interface{}{
+			"packet_size": len(data),
+		})
 		return false
 	}
 
+	masterlog.Info("Extracted authentication from packet", map[string]interface{}{
+		"username":          username,
+		"password_length":   len(password),
+		"magic_packet_size": len(magicPacketData),
+	})
+
 	// Verify authentication
 	if !s.authenticator.Verify(username, password) {
+		masterlog.Info("Authentication failed", map[string]interface{}{
+			"username": username,
+		})
 		return false
 	}
 
+	masterlog.Info("Authentication successful", map[string]interface{}{
+		"username": username,
+	})
+
 	// Check if it's a valid magic packet
-	return magicpacket.IsMagicPacket(magicPacketData)
+	isValid := magicpacket.IsMagicPacket(magicPacketData)
+	if !isValid {
+		masterlog.Info("Magic packet validation failed", map[string]interface{}{
+			"magic_packet_size": len(magicPacketData),
+			"magic_packet_hex":  hex.EncodeToString(magicPacketData),
+		})
+	}
+
+	return isValid
 }

system/shutdown.go

@@ -4,15 +4,33 @@
 package system
 
 import (
-	"log"
 	"os/exec"
+
+	"git.secnex.io/secnex/masterlog"
 )
 
 // Shutdown shuts down the system (Unix/Linux/macOS)
 func Shutdown() {
+	// Try shutdown command first
 	cmd := exec.Command("shutdown", "-h", "now")
 
 	if err := cmd.Run(); err != nil {
-		log.Fatalf("Failed to shutdown system: %v", err)
+		masterlog.Error("Failed to shutdown system (trying with sudo)", map[string]interface{}{
+			"error": err,
+		})
+
+		// Try with sudo if the first attempt failed
+		cmd = exec.Command("sudo", "shutdown", "-h", "now")
+		if err := cmd.Run(); err != nil {
+			masterlog.Error("Failed to shutdown system even with sudo", map[string]interface{}{
+				"error": err,
+				"note":  "The application may need to be run with sudo privileges",
+			})
+			// Don't use log.Fatalf here, just log the error
+			// The system might still shutdown or the user can manually shutdown
+			return
+		}
 	}
+
+	masterlog.Info("Shutdown command executed successfully")
 }

system/shutdown_windows.go

@@ -4,8 +4,9 @@
 package system
 
 import (
-	"log"
 	"os/exec"
+
+	"git.secnex.io/secnex/masterlog"
 )
 
 // Shutdown shuts down the system (Windows)
@@ -13,6 +14,12 @@ func Shutdown() {
 	cmd := exec.Command("shutdown", "/s", "/t", "0")
 
 	if err := cmd.Run(); err != nil {
-		log.Fatalf("Failed to shutdown system: %v", err)
+		masterlog.Error("Failed to shutdown system", map[string]interface{}{
+			"error": err,
+			"note":  "The application may need administrator privileges",
+		})
+		return
 	}
+
+	masterlog.Info("Shutdown command executed successfully")
 }