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Add initial support for embedded CycloneDX VEX documents
Signed-off-by: Sambhav Kothari <skothari44@bloomberg.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| package cyclonedxvex | ||
|
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| import ( | ||
| "time" | ||
|
|
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| "github.com/CycloneDX/cyclonedx-go" | ||
|
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| "github.com/anchore/syft/syft/source" | ||
| ) | ||
|
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| // NewBomMetadata returns a new BomDescriptor tailored for the current time and "syft" tool details. | ||
| func NewBomMetadata(name, version string, srcMetadata *source.Metadata) *cyclonedx.Metadata { | ||
| metadata := cyclonedx.Metadata{ | ||
| Timestamp: time.Now().Format(time.RFC3339), | ||
| Tools: &[]cyclonedx.Tool{ | ||
| { | ||
| Vendor: "anchore", | ||
| Name: name, | ||
| Version: version, | ||
| }, | ||
| }, | ||
| } | ||
| if srcMetadata != nil { | ||
| switch srcMetadata.Scheme { | ||
| case source.ImageScheme: | ||
| metadata.Component = &cyclonedx.Component{ | ||
| Type: "container", | ||
| Name: srcMetadata.ImageMetadata.UserInput, | ||
| Version: srcMetadata.ImageMetadata.ManifestDigest, | ||
| } | ||
| case source.DirectoryScheme: | ||
| metadata.Component = &cyclonedx.Component{ | ||
| Type: "file", | ||
| Name: srcMetadata.Path, | ||
| } | ||
| } | ||
| } | ||
| return &metadata | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package cyclonedxvex | ||
|
|
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| import ( | ||
| "github.com/CycloneDX/cyclonedx-go" | ||
| "github.com/google/uuid" | ||
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| "github.com/anchore/grype/grype/match" | ||
| "github.com/anchore/grype/grype/pkg" | ||
| "github.com/anchore/grype/grype/vulnerability" | ||
| "github.com/anchore/grype/internal" | ||
| "github.com/anchore/grype/internal/version" | ||
| "github.com/anchore/packageurl-go" | ||
| "github.com/anchore/syft/syft/source" | ||
| ) | ||
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| // NewDocument returns a CycloneDX Document object populated with the SBOM and vulnerability findings. | ||
| func NewDocument(packages []pkg.Package, matches match.Matches, srcMetadata *source.Metadata, provider vulnerability.MetadataProvider) (*cyclonedx.BOM, error) { | ||
| versionInfo := version.FromBuild() | ||
| doc := cyclonedx.NewBOM() | ||
| doc.SerialNumber = uuid.New().URN() | ||
| if srcMetadata != nil { | ||
| doc.Metadata = NewBomMetadata(internal.ApplicationName, versionInfo.Version, srcMetadata) | ||
| } | ||
|
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| // attach matches | ||
| components := []cyclonedx.Component{} | ||
| vulnerabilities := []cyclonedx.Vulnerability{} | ||
|
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| for _, p := range packages { | ||
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| component := getComponent(p) | ||
| pkgMatches := matches.GetByPkgID(p.ID) | ||
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| if len(pkgMatches) > 0 { | ||
| for _, m := range pkgMatches { | ||
| v, err := NewVulnerability(m, provider) | ||
| if err != nil { | ||
| return &cyclonedx.BOM{}, err | ||
| } | ||
| v.Affects = &[]cyclonedx.Affects{ | ||
| { | ||
| Ref: component.BOMRef, | ||
| }, | ||
| } | ||
| vulnerabilities = append(vulnerabilities, v) | ||
| } | ||
| } | ||
| // add a *copy* of the Component to the bom document | ||
| components = append(components, component) | ||
| } | ||
| doc.Components = &components | ||
| doc.Vulnerabilities = &vulnerabilities | ||
|
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| return doc, nil | ||
| } | ||
|
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| func getComponent(p pkg.Package) cyclonedx.Component { | ||
| bomRef := string(p.ID) | ||
| // try and parse the PURL if possible and append syft id to it, to make | ||
| // the purl unique in the BOM. | ||
| // TODO: In the future we may want to dedupe by PURL and combine components with | ||
| // the same PURL while preserving their unique metadata. | ||
| if parsedPURL, err := packageurl.FromString(p.PURL); err == nil { | ||
| parsedPURL.Qualifiers = append(parsedPURL.Qualifiers, packageurl.Qualifier{Key: "syft-id", Value: string(p.ID)}) | ||
| bomRef = parsedPURL.ToString() | ||
| } | ||
| // make a new Component (by value) | ||
| component := cyclonedx.Component{ | ||
| Type: "library", // TODO: this is not accurate, syft does the same thing | ||
| Name: p.Name, | ||
| Version: p.Version, | ||
| PackageURL: p.PURL, | ||
| BOMRef: bomRef, | ||
| } | ||
|
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| var licenses cyclonedx.Licenses | ||
| for _, licenseName := range p.Licenses { | ||
| licenses = append(licenses, cyclonedx.LicenseChoice{ | ||
| License: &cyclonedx.License{ | ||
| Name: licenseName, | ||
| }, | ||
| }) | ||
| } | ||
| if len(licenses) > 0 { | ||
| // adding licenses to the Component | ||
| component.Licenses = &licenses | ||
| } | ||
| return component | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package cyclonedxvex | ||
|
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| import ( | ||
| "io" | ||
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| "github.com/CycloneDX/cyclonedx-go" | ||
|
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| "github.com/anchore/grype/grype/match" | ||
| "github.com/anchore/grype/grype/pkg" | ||
| "github.com/anchore/grype/grype/vulnerability" | ||
| "github.com/anchore/syft/syft/source" | ||
| ) | ||
|
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| // Presenter writes a CycloneDX report from the given Matches and Scope contents | ||
| type Presenter struct { | ||
| results match.Matches | ||
| packages []pkg.Package | ||
| srcMetadata *source.Metadata | ||
| metadataProvider vulnerability.MetadataProvider | ||
| embedded bool | ||
| format cyclonedx.BOMFileFormat | ||
| } | ||
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| // NewPresenter is a *Presenter constructor | ||
| func NewPresenter(results match.Matches, packages []pkg.Package, srcMetadata *source.Metadata, metadataProvider vulnerability.MetadataProvider, embedded bool, format cyclonedx.BOMFileFormat) *Presenter { | ||
| return &Presenter{ | ||
| results: results, | ||
| packages: packages, | ||
| metadataProvider: metadataProvider, | ||
| srcMetadata: srcMetadata, | ||
| embedded: embedded, | ||
| format: format, | ||
| } | ||
| } | ||
|
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| // Present creates a CycloneDX-based reporting | ||
| func (pres *Presenter) Present(output io.Writer) error { | ||
| bom, err := NewDocument(pres.packages, pres.results, pres.srcMetadata, pres.metadataProvider) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| encoder := cyclonedx.NewBOMEncoder(output, pres.format) | ||
| encoder.SetPretty(true) | ||
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| err = encoder.Encode(bom) | ||
|
|
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| if err != nil { | ||
| return err | ||
| } | ||
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| return err | ||
| } |
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