Add initial version of cyclonedx format

Signed-off-by: Mateusz Dymiński <dyminski@gmail.com>

README.md

@@ -37,8 +37,9 @@ kbom generate [flags]
 Optional flags include:
 
 ```plain
-  -f, --format string     Format (json, yaml) (default "json")
-  -h, --help              Help for generate
+Flags:
+  -f, --format string     Format (json, yaml, cyclonedx-json, cyclonedx-xml) (default "json")
+  -h, --help              help for generate
   -p, --out-path string   Path to write KBOM file to. Works only with --output=file (default ".")
   -o, --output string     Output (stdout, file) (default "stdout")
       --short             Short - only include metadata, nodes, images and resources counters

cmd/cyclonexdx.go

@@ -0,0 +1,271 @@
+package cmd
+
+import (
+	"fmt"
+	"hash/fnv"
+	"time"
+
+	"github.com/CycloneDX/cyclonedx-go"
+	"github.com/google/uuid"
+	"github.com/ksoclabs/kbom/internal/model"
+	"github.com/mitchellh/hashstructure/v2"
+)
+
+const (
+	CdxPrefix  = "cdx:"
+	KSOCPrefix = "ksoc:kbom:"
+
+	ClusterType   = "cluster"
+	NodeType      = "node"
+	ContainerType = "container"
+)
+
+func transformToCycloneDXBOM(kbom *model.KBOM) *cyclonedx.BOM { //nolint:funlen
+	cdxBOM := cyclonedx.NewBOM()
+
+	cdxBOM.SerialNumber = uuid.New().URN()
+	cdxBOM.Metadata = &cyclonedx.Metadata{
+		Timestamp: time.Now().Format(time.RFC3339),
+		Tools: &[]cyclonedx.Tool{
+			{
+				Vendor:  kbom.GeneratedBy.Vendor,
+				Name:    kbom.GeneratedBy.Name,
+				Version: kbom.GeneratedBy.Version,
+			},
+		},
+		Component: &cyclonedx.Component{
+			BOMRef: id(kbom.GeneratedBy),
+			Type:   cyclonedx.ComponentTypeApplication,
+			Name:   kbom.GeneratedBy.Name,
+			Hashes: &[]cyclonedx.Hash{
+				{
+					Algorithm: cyclonedx.HashAlgoSHA256,
+					Value:     kbom.GeneratedBy.Commit,
+				},
+			},
+			Version: kbom.GeneratedBy.Version,
+		},
+	}
+
+	components := []cyclonedx.Component{}
+	clusterProperties := []cyclonedx.Property{
+		{
+			Name:  CdxPrefix + "k8s:component:type",
+			Value: ClusterType,
+		},
+		{
+			Name:  CdxPrefix + "k8s:component:name",
+			Value: kbom.Cluster.Name,
+		},
+		{
+			Name:  KSOCPrefix + "k8s:cluster:nodes",
+			Value: fmt.Sprintf("%d", kbom.Cluster.NodesCount),
+		},
+	}
+
+	if kbom.Cluster.Location.Location != "" && kbom.Cluster.Location.Location != "unknown" {
+		clusterProperties = append(clusterProperties, cyclonedx.Property{
+			Name:  KSOCPrefix + "k8s:cluster:location:location",
+			Value: kbom.Cluster.Location.Location,
+		})
+	}
+
+	if kbom.Cluster.Location.Region != "" {
+		clusterProperties = append(clusterProperties, cyclonedx.Property{
+			Name:  KSOCPrefix + "k8s:cluster:location:region",
+			Value: kbom.Cluster.Location.Region,
+		})
+	}
+
+	if kbom.Cluster.Location.Zone != "" {
+		clusterProperties = append(clusterProperties, cyclonedx.Property{
+			Name:  KSOCPrefix + "k8s:cluster:location:zone",
+			Value: kbom.Cluster.Location.Zone,
+		})
+	}
+
+	clusterComponent := cyclonedx.Component{
+		BOMRef:     id(kbom.Cluster),
+		Type:       cyclonedx.ComponentTypePlatform,
+		Name:       "cluster",
+		Version:    kbom.Cluster.K8sVersion,
+		Properties: &clusterProperties,
+	}
+
+	components = append(components, clusterComponent)
+
+	for i := range kbom.Cluster.Nodes {
+		n := kbom.Cluster.Nodes[i]
+		components = append(components, cyclonedx.Component{
+			BOMRef: id(n),
+			Type:   cyclonedx.ComponentTypePlatform,
+			Name:   n.Name,
+			Properties: &[]cyclonedx.Property{
+				{
+					Name:  CdxPrefix + "k8s:component:type",
+					Value: NodeType,
+				},
+				{
+					Name:  CdxPrefix + "k8s:component:name",
+					Value: n.Name,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:osimage",
+					Value: n.OsImage,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:arch",
+					Value: n.Architecture,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:kernel",
+					Value: n.KernelVersion,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:bootid",
+					Value: n.BootID,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:type",
+					Value: n.Type,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:operatingsystem",
+					Value: n.OperatingSystem,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:machineid",
+					Value: n.MachineID,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:hostname",
+					Value: n.Hostname,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:containerruntimeversion",
+					Value: n.ContainerRuntimeVersion,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:kubeletversion",
+					Value: n.KubeletVersion,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:kubeproxyversion",
+					Value: n.KubeProxyVersion,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:capacity:cpu",
+					Value: n.Capacity.CPU,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:capacity:memory",
+					Value: n.Capacity.Memory,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:capacity:pods",
+					Value: n.Capacity.Pods,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:node:capacity:ephemeralstorage",
+					Value: n.Capacity.EphemeralStorage,
+				},
+			},
+		})
+	}
+
+	for _, img := range kbom.Cluster.Resources.Images {
+		container := cyclonedx.Component{
+			BOMRef:     img.PkgID(),
+			Type:       cyclonedx.ComponentTypeContainer,
+			Name:       img.Name,
+			Version:    img.Digest,
+			PackageURL: img.PkgID(),
+			Properties: &[]cyclonedx.Property{
+				{
+					Name:  CdxPrefix + "k8s:component:type",
+					Value: ContainerType,
+				},
+				{
+					Name:  CdxPrefix + "k8s:component:name",
+					Value: img.Name,
+				},
+				{
+					Name:  KSOCPrefix + "pkg:type",
+					Value: "oci",
+				},
+				{
+					Name:  KSOCPrefix + "pkg:name",
+					Value: img.Name,
+				},
+				{
+					Name:  KSOCPrefix + "pkg:version",
+					Value: img.Version,
+				},
+				{
+					Name:  KSOCPrefix + "pkg:digest",
+					Value: img.Digest,
+				},
+			},
+		}
+
+		components = append(components, container)
+	}
+
+	for _, resList := range kbom.Cluster.Resources.Resources {
+		for _, res := range resList.Resources {
+			properties := []cyclonedx.Property{
+				{
+					Name:  CdxPrefix + "k8s:component:type",
+					Value: resList.Kind,
+				},
+				{
+					Name:  CdxPrefix + "k8s:component:name",
+					Value: res.Name,
+				},
+				{
+					Name:  KSOCPrefix + "k8s:component:apiversion",
+					Value: resList.APIVersion,
+				},
+			}
+
+			if resList.Namespaced {
+				properties = append(properties, cyclonedx.Property{
+					Name:  KSOCPrefix + "k8s:component:namespace",
+					Value: res.Namespace,
+				})
+			}
+
+			resource := cyclonedx.Component{
+				BOMRef:     id(res),
+				Type:       cyclonedx.ComponentTypeApplication, // TODO: this is not perfect but we don't have a better option
+				Name:       res.Name,
+				Version:    res.APIVersion,
+				Properties: &properties,
+			}
+
+			components = append(components, resource)
+		}
+	}
+
+	cdxBOM.Components = &components
+
+	// TODO: add relationships and dependencies
+
+	return cdxBOM
+}
+
+func id(obj interface{}) string {
+	f, err := hashstructure.Hash(obj, hashstructure.FormatV2, &hashstructure.HashOptions{
+		ZeroNil:      true,
+		SlicesAsSets: true,
+		Hasher:       fnv.New64(),
+	})
+
+	// this should never happen, but if it does, we don't want to crash - use empty string
+	if err != nil {
+		fmt.Printf("failed to hash object: %v", err)
+		return ""
+	}
+
+	return fmt.Sprintf("%016x", f)
+}

cmd/format.go

@@ -0,0 +1,52 @@
+package cmd
+
+import "fmt"
+
+type Format struct {
+	Name          string
+	FileExtension string
+}
+
+var JSONFormat = Format{
+	Name:          "json",
+	FileExtension: "json",
+}
+
+var YAMLFormat = Format{
+	Name:          "yaml",
+	FileExtension: "yaml",
+}
+
+var CycloneDXJsonFormat = Format{
+	Name:          "cyclonedx-json",
+	FileExtension: "json",
+}
+
+var CycloneDXXMLFormat = Format{
+	Name:          "cyclonedx-xml",
+	FileExtension: "xml",
+}
+
+func formatNames() []string {
+	return []string{
+		JSONFormat.Name,
+		YAMLFormat.Name,
+		CycloneDXJsonFormat.Name,
+		CycloneDXXMLFormat.Name,
+	}
+}
+
+func formatFromName(name string) (Format, error) {
+	switch name {
+	case JSONFormat.Name:
+		return JSONFormat, nil
+	case YAMLFormat.Name:
+		return YAMLFormat, nil
+	case CycloneDXJsonFormat.Name:
+		return CycloneDXJsonFormat, nil
+	case CycloneDXXMLFormat.Name:
+		return CycloneDXXMLFormat, nil
+	default:
+		return Format{}, fmt.Errorf("format %q is not supported", name)
+	}
+}