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const crypto = require('node:crypto') const normalizeData = require('normalize-package-data') const npa = require('npm-package-arg') const ssri = require('ssri') const SPDX_SCHEMA_VERSION = 'SPDX-2.3' const SPDX_DATA_LICENSE = 'CC0-1.0' const SPDX_IDENTIFER = 'SPDXRef-DOCUMENT' const NO_ASSERTION = 'NOASSERTION' const REL_DESCRIBES = 'DESCRIBES' const REL_PREREQ = 'PREREQUISITE_FOR' const REL_OPTIONAL = 'OPTIONAL_DEPENDENCY_OF' const REL_DEV = 'DEV_DEPENDENCY_OF' const REL_DEP = 'DEPENDENCY_OF' const REF_CAT_PACKAGE_MANAGER = 'PACKAGE-MANAGER' const REF_TYPE_PURL = 'purl' const spdxOutput = ({ npm, nodes, packageType }) => { const rootNode = nodes.find(node => node.isRoot) const childNodes = nodes.filter(node => !node.isRoot && !node.isLink) const rootID = rootNode.pkgid const uuid = crypto.randomUUID() const ns = `http://spdx.org/spdxdocs/${npa(rootID).escapedName}-${rootNode.version}-${uuid}` const relationships = [] const seen = new Set() for (let node of nodes) { if (node.isLink) { node = node.target } if (seen.has(node)) { continue } seen.add(node) const rels = [...node.edgesOut.values()] // Filter out edges that are linking to nodes not in the list .filter(edge => nodes.find(n => n === edge.to)) .map(edge => toSpdxRelationship(node, edge)) .filter(rel => rel) relationships.push(...rels) } const extraRelationships = nodes.filter(node => node.extraneous) .map(node => toSpdxRelationship(rootNode, { to: node, type: 'optional' })) relationships.push(...extraRelationships) const bom = { spdxVersion: SPDX_SCHEMA_VERSION, dataLicense: SPDX_DATA_LICENSE, SPDXID: SPDX_IDENTIFER, name: rootID, documentNamespace: ns, creationInfo: { created: new Date().toISOString(), creators: [ `Tool: npm/cli-${npm.version}`, ], }, documentDescribes: [toSpdxID(rootNode)], packages: [toSpdxItem(rootNode, { packageType }), ...childNodes.map(toSpdxItem)], relationships: [ { spdxElementId: SPDX_IDENTIFER, relatedSpdxElement: toSpdxID(rootNode), relationshipType: REL_DESCRIBES, }, ...relationships, ], } return bom } const toSpdxItem = (node, { packageType }) => { normalizeData(node.package) // Calculate purl from package spec let spec = npa(node.pkgid) spec = (spec.type === 'alias') ? spec.subSpec : spec const purl = npa.toPurl(spec) + (isGitNode(node) ? `?vcs_url=${node.resolved}` : '') /* For workspace nodes, use the location from their linkNode */ let location = node.location if (node.isWorkspace && node.linksIn.size > 0) { location = node.linksIn.values().next().value.location } let license = node.package?.license if (license) { if (typeof license === 'object') { license = license.type } } const pkg = { name: node.packageName, SPDXID: toSpdxID(node), versionInfo: node.version, packageFileName: location, description: node.package?.description || undefined, primaryPackagePurpose: packageType ? packageType.toUpperCase() : undefined, downloadLocation: (node.isLink ? undefined : node.resolved) || NO_ASSERTION, filesAnalyzed: false, homepage: node.package?.homepage || NO_ASSERTION, licenseDeclared: license || NO_ASSERTION, externalRefs: [ { referenceCategory: REF_CAT_PACKAGE_MANAGER, referenceType: REF_TYPE_PURL, referenceLocator: purl, }, ], } if (node.integrity) { const integrity = ssri.parse(node.integrity, { single: true }) pkg.checksums = [{ algorithm: integrity.algorithm.toUpperCase(), checksumValue: integrity.hexDigest(), }] } return pkg } const toSpdxRelationship = (node, edge) => { let type switch (edge.type) { case 'peer': type = REL_PREREQ break case 'optional': type = REL_OPTIONAL break case 'dev': type = REL_DEV break default: type = REL_DEP } return { spdxElementId: toSpdxID(edge.to), relatedSpdxElement: toSpdxID(node), relationshipType: type, } } const toSpdxID = (node) => { let name = node.packageName // Strip leading @ for scoped packages name = name.replace(/^@/, '') // Replace slashes with dots name = name.replace(/\//g, '.') return `SPDXRef-Package-${name}-${node.version}` } const isGitNode = (node) => { if (!node.resolved) { return } try { const { type } = npa(node.resolved) return type === 'git' || type === 'hosted' } catch (err) { /* istanbul ignore next */ return false } } module.exports = { spdxOutput }