fix: ClusterFuzzLite batch fuzzing linter fixes

pkg/agent/bakerapi.go

@@ -25,6 +25,9 @@ type agentBakerImpl struct{}
 func (agentBaker *agentBakerImpl) GetNodeBootstrapping(ctx context.Context,
 	config *datamodel.NodeBootstrappingConfiguration) (*datamodel.NodeBootstrapping, error) {
 	// validate and fix input before passing config to the template generator.
+	if config.AgentPoolProfile == nil {
+		return nil, fmt.Errorf("config.AgentPoolProfile is nil")
+	}
 	if config.AgentPoolProfile.IsWindows() {
 		validateAndSetWindowsNodeBootstrappingConfiguration(config)
 	} else {
@@ -42,6 +45,9 @@ func (agentBaker *agentBakerImpl) GetNodeBootstrapping(ctx context.Context,
 		return nodeBootstrapping, nil
 	}
 
+	if config.CloudSpecConfig == nil {
+		return nil, fmt.Errorf("config.CloudSpecConfig is nil")
+	}
 	osImageConfigMap, hasCloud := datamodel.AzureCloudToOSImageMap[config.CloudSpecConfig.CloudName]
 	if !hasCloud {
 		return nil, fmt.Errorf("don't have settings for cloud %s", config.CloudSpecConfig.CloudName)

pkg/agent/utils.go

@@ -258,6 +258,9 @@ func IsKubernetesVersionGe(actualVersion, version string) bool {
 
 func getCustomDataFromJSON(jsonStr string) string {
 	var customDataObj map[string]string
+	jsonStr = strings.ReplaceAll(jsonStr, "\r", "\r\n")
+	jsonStr = strings.ReplaceAll(jsonStr, "\n", "\\n")
+	jsonStr = strings.ReplaceAll(jsonStr, "\t", "\\t")
 	err := json.Unmarshal([]byte(jsonStr), &customDataObj)
 	if err != nil {
 		panic(err)

pkg/agent/variables.go

@@ -171,10 +171,21 @@ func isVHD(profile *datamodel.AgentPoolProfile) string {
 }
 
 func getOutBoundCmd(nbc *datamodel.NodeBootstrappingConfiguration, cloudSpecConfig *datamodel.AzureEnvironmentSpecConfig) string {
+	if nbc.ContainerService == nil {
+		return "nbc.ContainerService is nil"
+	}
 	cs := nbc.ContainerService
+
+	if cs.Properties == nil {
+		return "cs.Properties is nil"
+	}
 	if cs.Properties.FeatureFlags.IsFeatureEnabled("BlockOutboundInternet") {
 		return ""
 	}
+
+	if cloudSpecConfig == nil {
+		return "cloudSpecConfig is nil"
+	}
 	registry := ""
 	if cloudSpecConfig.CloudName == datamodel.AzureChinaCloud {
 		registry = `gcr.azk8s.cn`
@@ -190,8 +201,18 @@ func getOutBoundCmd(nbc *datamodel.NodeBootstrappingConfiguration, cloudSpecConf
 
 	// curl on Ubuntu 16.04 (shipped prior to AKS 1.18) doesn't support proxy TLS.
 	// so we need to use nc for the connectivity check.
-	clusterVersion, _ := semver.Make(cs.Properties.OrchestratorProfile.OrchestratorVersion)
-	minVersion, _ := semver.Make("1.18.0")
+	clusterVersion, err := semver.Make(cs.Properties.OrchestratorProfile.OrchestratorVersion)
+	if err != nil {
+		if err != nil {
+			return err.Error()
+		}
+	}
+	minVersion, err := semver.Make("1.18.0")
+	if err != nil {
+		if err != nil {
+			return err.Error()
+		}
+	}
 
 	connectivityCheckCommand := ""
 	if clusterVersion.GTE(minVersion) {