Handling invalid UTF-8 character in sys info (#2360)

In some operation systems, the sys info contains invalid characters.
In this patch try to keep the original fallback logic but filter out the cases when the character is invalid.

client/system/info_darwin_test.go

@@ -1,11 +1,12 @@
 package system
 
 import (
-	log "github.com/sirupsen/logrus"
 	"testing"
+
+	log "github.com/sirupsen/logrus"
 )
 
-func Test_sysInfo(t *testing.T) {
+func Test_sysInfoMac(t *testing.T) {
 	t.Skip("skipping darwin test")
 	serialNum, prodName, manufacturer := sysInfo()
 	if serialNum == "" {

client/system/info_linux.go

@@ -21,6 +21,26 @@ import (
 	"github.com/netbirdio/netbird/version"
 )
 
+type SysInfoGetter interface {
+	GetSysInfo() SysInfo
+}
+
+type SysInfoWrapper struct {
+	si sysinfo.SysInfo
+}
+
+func (s SysInfoWrapper) GetSysInfo() SysInfo {
+	s.si.GetSysInfo()
+	return SysInfo{
+		ChassisSerial: s.si.Chassis.Serial,
+		ProductSerial: s.si.Product.Serial,
+		BoardSerial:   s.si.Board.Serial,
+		ProductName:   s.si.Product.Name,
+		BoardName:     s.si.Board.Name,
+		ProductVendor: s.si.Product.Vendor,
+	}
+}
+
 // GetInfo retrieves and parses the system information
 func GetInfo(ctx context.Context) *Info {
 	info := _getInfo()
@@ -45,7 +65,8 @@ func GetInfo(ctx context.Context) *Info {
 		log.Warnf("failed to discover network addresses: %s", err)
 	}
 
-	serialNum, prodName, manufacturer := sysInfo()
+	si := SysInfoWrapper{}
+	serialNum, prodName, manufacturer := sysInfo(si.GetSysInfo())
 
 	env := Environment{
 		Cloud:    detect_cloud.Detect(ctx),
@@ -87,20 +108,36 @@ func _getInfo() string {
 	return out.String()
 }
 
-func sysInfo() (serialNumber string, productName string, manufacturer string) {
+func sysInfo(si SysInfo) (string, string, string) {
-	var si sysinfo.SysInfo
-	si.GetSysInfo()
 	isascii := regexp.MustCompile("^[[:ascii:]]+$")
-	serial := si.Chassis.Serial
+
-	if (serial == "Default string" || serial == "") && si.Product.Serial != "" {
+	serials := []string{si.ChassisSerial, si.ProductSerial}
-		serial = si.Product.Serial
+	serial := ""
+
+	for _, s := range serials {
+		if isascii.MatchString(s) {
+			serial = s
+			if s != "Default string" {
+				break
 			}
-	if (!isascii.MatchString(serial)) && si.Board.Serial != "" {
-		serial = si.Board.Serial
 		}
-	name := si.Product.Name
-	if (!isascii.MatchString(name)) && si.Board.Name != "" {
-		name = si.Board.Name
 	}
-	return serial, name, si.Product.Vendor
+
+	if serial == "" && isascii.MatchString(si.BoardSerial) {
+		serial = si.BoardSerial
+	}
+
+	var name string
+	for _, n := range []string{si.ProductName, si.BoardName} {
+		if isascii.MatchString(n) {
+			name = n
+			break
+		}
+	}
+
+	var manufacturer string
+	if isascii.MatchString(si.ProductVendor) {
+		manufacturer = si.ProductVendor
+	}
+	return serial, name, manufacturer
 }

client/system/sysinfo_linux.go

@@ -0,0 +1,12 @@
+package system
+
+// SysInfo used to moc out the sysinfo getter
+type SysInfo struct {
+	ChassisSerial string
+	ProductSerial string
+	BoardSerial   string
+
+	ProductName   string
+	BoardName     string
+	ProductVendor string
+}

client/system/sysinfo_linux_test.go

@@ -0,0 +1,198 @@
+package system
+
+import "testing"
+
+func Test_sysInfo(t *testing.T) {
+	tests := []struct {
+		name             string
+		sysInfo          SysInfo
+		wantSerialNum    string
+		wantProdName     string
+		wantManufacturer string
+	}{
+		{
+			name: "Test Case 1",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Empty Chassis Serial",
+			sysInfo: SysInfo{
+				ChassisSerial: "",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Empty Chassis Serial",
+			sysInfo: SysInfo{
+				ChassisSerial: "",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Fallback to Product Serial",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Product serial",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Product serial",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Fallback to Product Serial with default string",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Non UTF-8 in Chassis Serial",
+			sysInfo: SysInfo{
+				ChassisSerial: "\x80",
+				ProductSerial: "Product serial",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Product serial",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Non UTF-8 in Chassis Serial and Product Serial",
+			sysInfo: SysInfo{
+				ChassisSerial: "\x80",
+				ProductSerial: "\x80",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "M80-G8013200245",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Non UTF-8 in Chassis Serial and Product Serial and BoardSerial",
+			sysInfo: SysInfo{
+				ChassisSerial: "\x80",
+				ProductSerial: "\x80",
+				BoardSerial:   "\x80",
+				ProductName:   "B650M-HDV/M.2",
+				BoardName:     "B650M-HDV/M.2",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "",
+			wantProdName:     "B650M-HDV/M.2",
+			wantManufacturer: "ASRock",
+		},
+
+		{
+			name: "Empty Product Name",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "",
+				BoardName:     "boardname",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "boardname",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Invalid Product Name",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "\x80",
+				BoardName:     "boardname",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "boardname",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Invalid BoardName Name",
+			sysInfo: SysInfo{
+				ChassisSerial: "Default string",
+				ProductSerial: "Default string",
+				BoardSerial:   "M80-G8013200245",
+				ProductName:   "\x80",
+				BoardName:     "\x80",
+				ProductVendor: "ASRock",
+			},
+			wantSerialNum:    "Default string",
+			wantProdName:     "",
+			wantManufacturer: "ASRock",
+		},
+		{
+			name: "Invalid chars",
+			sysInfo: SysInfo{
+				ChassisSerial: "\x80",
+				ProductSerial: "\x80",
+				BoardSerial:   "\x80",
+				ProductName:   "\x80",
+				BoardName:     "\x80",
+				ProductVendor: "\x80",
+			},
+			wantSerialNum:    "",
+			wantProdName:     "",
+			wantManufacturer: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotSerialNum, gotProdName, gotManufacturer := sysInfo(tt.sysInfo)
+			if gotSerialNum != tt.wantSerialNum {
+				t.Errorf("sysInfo() gotSerialNum = %v, want %v", gotSerialNum, tt.wantSerialNum)
+			}
+			if gotProdName != tt.wantProdName {
+				t.Errorf("sysInfo() gotProdName = %v, want %v", gotProdName, tt.wantProdName)
+			}
+			if gotManufacturer != tt.wantManufacturer {
+				t.Errorf("sysInfo() gotManufacturer = %v, want %v", gotManufacturer, tt.wantManufacturer)
+			}
+		})
+	}
+}

encryption/message.go

@@ -10,7 +10,7 @@ import (
 func EncryptMessage(remotePubKey wgtypes.Key, ourPrivateKey wgtypes.Key, message pb.Message) ([]byte, error) {
 	byteResp, err := pb.Marshal(message)
 	if err != nil {
-		log.Errorf("failed marshalling message %v", err)
+		log.Errorf("failed marshalling message %v, %+v", err, message.String())
 		return nil, err
 	}