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index.js
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index.js
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import { Buffer } from "node:buffer";
import { spawnSync } from "node:child_process";
import {
constants,
accessSync,
existsSync,
lstatSync,
mkdirSync,
mkdtempSync,
readFileSync,
rmSync,
statSync,
unlinkSync,
writeFileSync,
} from "node:fs";
import { platform as _platform, homedir, tmpdir } from "node:os";
import { basename, dirname, join, resolve, sep } from "node:path";
import process from "node:process";
import { URL, fileURLToPath } from "node:url";
import got from "got";
import { PackageURL } from "packageurl-js";
import { parse } from "ssri";
import { v4 as uuidv4 } from "uuid";
import {
collectEnvInfo,
getBranch,
getOriginUrl,
gitTreeHashes,
listFiles,
} from "./envcontext.js";
import {
CLJ_CMD,
DEBUG_MODE,
FETCH_LICENSE,
LEIN_CMD,
MAX_BUFFER,
SWIFT_CMD,
TIMEOUT_MS,
addEvidenceForDotnet,
addEvidenceForImports,
addPlugin,
checksumFile,
cleanupPlugin,
collectGradleDependencies,
collectJarNS,
collectMvnDependencies,
convertJarNSToPackages,
convertOSQueryResults,
determineSbtVersion,
encodeForPurl,
executeGradleProperties,
executeParallelGradleProperties,
extractJarArchive,
frameworksList,
getAllFiles,
getCppModules,
getGradleCommand,
getLicenses,
getMavenCommand,
getMvnMetadata,
getNugetMetadata,
getPipFrozenTree,
getPyMetadata,
getPyModules,
getSwiftPackageMetadata,
getTimestamp,
includeMavenTestScope,
parseBazelActionGraph,
parseBazelSkyframe,
parseBdistMetadata,
parseBitbucketPipelinesFile,
parseBowerJson,
parseCabalData,
parseCargoAuditableData,
parseCargoData,
parseCargoDependencyData,
parseCargoTomlData,
parseCljDep,
parseCloudBuildData,
parseCmakeLikeFile,
parseComposerLock,
parseConanData,
parseConanLockData,
parseContainerFile,
parseContainerSpecData,
parseCsPkgData,
parseCsPkgLockData,
parseCsProjAssetsData,
parseCsProjData,
parseEdnData,
parseGemfileLockData,
parseGitHubWorkflowData,
parseGoListDep,
parseGoModData,
parseGoModGraph,
parseGoModWhy,
parseGopkgData,
parseGosumData,
parseGradleDep,
parseGradleProperties,
parseHelmYamlData,
parseLeinDep,
parseLeiningenData,
parseMavenTree,
parseMinJs,
parseMixLockData,
parseNodeShrinkwrap,
parseNupkg,
parseOpenapiSpecData,
parsePackageJsonName,
parsePaketLockData,
parsePiplockData,
parsePkgJson,
parsePkgLock,
parsePnpmLock,
parsePoetrylockData,
parsePom,
parsePrivadoFile,
parsePubLockData,
parsePubYamlData,
parsePyProjectToml,
parseReqFile,
parseSbtLock,
parseSbtTree,
parseSetupPyFile,
parseSwiftJsonTree,
parseSwiftResolved,
parseYarnLock,
readZipEntry,
splitOutputByGradleProjects,
} from "./utils.js";
let url = import.meta.url;
if (!url.startsWith("file://")) {
url = new URL(`file://${import.meta.url}`).toString();
}
const dirName = import.meta ? dirname(fileURLToPath(url)) : __dirname;
const selfPJson = JSON.parse(
readFileSync(join(dirName, "package.json"), "utf-8"),
);
const _version = selfPJson.version;
import { gte, lte } from "semver";
import { findJSImportsExports } from "./analyzer.js";
import {
executeOsQuery,
getBinaryBom,
getCargoAuditableInfo,
getDotnetSlices,
getOSPackages,
} from "./binary.js";
import { collectOSCryptoLibs } from "./cbomutils.js";
import {
addSkippedSrcFiles,
exportArchive,
exportImage,
getPkgPathList,
parseImageName,
} from "./docker.js";
const isWin = _platform() === "win32";
let osQueries = {};
switch (_platform()) {
case "win32":
osQueries = JSON.parse(
readFileSync(join(dirName, "data", "queries-win.json"), "utf-8"),
);
break;
case "darwin":
osQueries = JSON.parse(
readFileSync(join(dirName, "data", "queries-darwin.json"), "utf-8"),
);
break;
default:
osQueries = JSON.parse(
readFileSync(join(dirName, "data", "queries.json"), "utf-8"),
);
break;
}
const cosDbQueries = JSON.parse(
readFileSync(join(dirName, "data", "cosdb-queries.json"), "utf-8"),
);
import { table } from "table";
// Construct gradle cache directory
let GRADLE_CACHE_DIR =
process.env.GRADLE_CACHE_DIR ||
join(homedir(), ".gradle", "caches", "modules-2", "files-2.1");
if (process.env.GRADLE_USER_HOME) {
GRADLE_CACHE_DIR = join(
process.env.GRADLE_USER_HOME,
"caches",
"modules-2",
"files-2.1",
);
}
// Construct sbt cache directory
const SBT_CACHE_DIR =
process.env.SBT_CACHE_DIR || join(homedir(), ".ivy2", "cache");
// CycloneDX Hash pattern
const HASH_PATTERN =
"^([a-fA-F0-9]{32}|[a-fA-F0-9]{40}|[a-fA-F0-9]{64}|[a-fA-F0-9]{96}|[a-fA-F0-9]{128})$";
/**
* Creates a default parent component based on the directory name.
*
* @param {string} path Directory or file name
* @param {string} type Package type
* @returns component object
*/
const createDefaultParentComponent = (
path,
type = "application",
options = {},
) => {
// Expands any relative path such as dot
path = resolve(path);
// Create a parent component based on the directory name
let dirNameStr =
existsSync(path) && lstatSync(path).isDirectory()
? basename(path)
: dirname(path);
const tmpA = dirNameStr.split(sep);
dirNameStr = tmpA[tmpA.length - 1];
const parentComponent = {
group: options.projectGroup || "",
name: options.projectName || dirNameStr,
version: `${options.projectVersion}` || "latest",
type: "application",
};
const ppurl = new PackageURL(
type,
parentComponent.group,
parentComponent.name,
parentComponent.version,
null,
null,
).toString();
parentComponent["bom-ref"] = decodeURIComponent(ppurl);
parentComponent["purl"] = ppurl;
return parentComponent;
};
const determineParentComponent = (options) => {
let parentComponent = undefined;
if (options.parentComponent && Object.keys(options.parentComponent).length) {
return options.parentComponent;
}
if (options.projectName && options.projectVersion) {
parentComponent = {
group: options.projectGroup || "",
name: options.projectName,
version: `${options.projectVersion}` || "",
type: "application",
};
const ppurl = new PackageURL(
parentComponent.type,
parentComponent.group,
parentComponent.name,
parentComponent.version,
null,
null,
).toString();
parentComponent["bom-ref"] = decodeURIComponent(ppurl);
parentComponent["purl"] = ppurl;
}
return parentComponent;
};
const addToolsSection = (options, context = {}) => {
if (options.specVersion === 1.4) {
return [
{
vendor: "cyclonedx",
name: "cdxgen",
version: _version,
},
];
}
let components = [];
const tools = options.tools || context.tools || [];
// tools can be an object or array
if (Array.isArray(tools) && tools.length) {
// cyclonedx-maven-plugin has the legacy tools metadata which needs to be patched
for (const tool of tools) {
if (!tool.type) {
tool.type = "application";
if (tool.vendor) {
tool.publisher = tool.vendor;
delete tool.vendor;
}
}
}
components = components.concat(tools);
} else if (tools && Object.keys(tools).length && tools.components) {
components = components.concat(tools.components);
}
components.push({
group: "@cyclonedx",
name: "cdxgen",
version: _version,
purl: `pkg:npm/%40cyclonedx/cdxgen@${_version}`,
type: "application",
"bom-ref": `pkg:npm/@cyclonedx/cdxgen@${_version}`,
author: "OWASP Foundation",
publisher: "OWASP Foundation",
});
return { components };
};
const componentToSimpleFullName = (comp) => {
let fullName = comp.group?.length ? `${comp.group}/${comp.name}` : comp.name;
if (comp.version?.length) {
fullName = `${fullName}@${comp.version}`;
}
return fullName;
};
// Remove unwanted properties from parent component
const cleanParentComponent = (comp) => {
delete comp.evidence;
delete comp._integrity;
delete comp.license;
delete comp.qualifiers;
delete comp.repository;
delete comp.homepage;
return comp;
};
const addAuthorsSection = (options) => {
const authors = [];
if (options.author) {
const oauthors = Array.isArray(options.author)
? options.author
: [options.author];
for (const aauthor of oauthors) {
if (aauthor.trim().length < 2) {
continue;
}
authors.push({ name: aauthor });
}
}
return authors;
};
/**
* Method to generate metadata.lifecycles section. We assume that we operate during "build"
* most of the time and under "post-build" for containers.
*
* @param {Object} options
* @returns {Array} Lifecycles array
*/
const addLifecyclesSection = (options) => {
// If lifecycle was set via CLI arguments, reuse the value
if (options.lifecycle) {
return [{ phase: options.lifecycle }];
}
const lifecycles = [{ phase: options.installDeps ? "build" : "pre-build" }];
if (options.exportData) {
const inspectData = options.exportData.inspectData;
if (inspectData) {
lifecycles.push({ phase: "post-build" });
}
} else if (options.deep) {
lifecycles.push({ phase: "post-build" });
}
if (options.projectType === "os") {
lifecycles.push({ phase: "operations" });
}
return lifecycles;
};
/**
* Method to generate the formulation section based on git metadata
*
* @param {Object} options
* @returns {Array} formulation array
*/
const addFormulationSection = (options) => {
const formulation = [];
const provides = [];
const gitBranch = getBranch();
const originUrl = getOriginUrl();
const gitFiles = listFiles();
const treeHashes = gitTreeHashes();
let parentOmniborId;
let treeOmniborId;
let components = [];
if (options.specVersion >= 1.6 && Object.keys(treeHashes).length === 2) {
parentOmniborId = `gitoid:blob:sha1:${treeHashes.parent}`;
treeOmniborId = `gitoid:blob:sha1:${treeHashes.tree}`;
components.push({
type: "file",
name: "git-parent",
description: "Git Parent Node.",
"bom-ref": parentOmniborId,
omniborId: [parentOmniborId],
swhid: [`swh:1:rev:${treeHashes.parent}`],
});
components.push({
type: "file",
name: "git-tree",
description: "Git Tree Node.",
"bom-ref": treeOmniborId,
omniborId: [treeOmniborId],
swhid: [`swh:1:rev:${treeHashes.tree}`],
});
provides.push({
ref: parentOmniborId,
provides: [treeOmniborId],
});
}
if (gitBranch && originUrl && gitFiles) {
const aformulation = {};
const gitFileComponents = gitFiles.map((f) =>
options.specVersion >= 1.6
? {
type: "file",
name: f.name,
version: f.hash,
omniborId: [f.omniborId],
swhid: [f.swhid],
}
: {
type: "file",
name: f.name,
version: f.hash,
},
);
components = components.concat(gitFileComponents);
// Complete the Artifact Dependency Graph
if (options.specVersion >= 1.6 && treeOmniborId) {
provides.push({
ref: treeOmniborId,
provides: gitFiles.map((f) => f.ref),
});
}
// Collect build environment details
const infoComponents = collectEnvInfo(options.path);
if (infoComponents?.length) {
components = components.concat(infoComponents);
}
// Should we include the OS crypto libraries
if (options.includeCrypto) {
const cryptoLibs = collectOSCryptoLibs(options);
if (cryptoLibs?.length) {
components = components.concat(cryptoLibs);
}
}
aformulation["bom-ref"] = uuidv4();
aformulation.components = components;
let environmentVars = [{ name: "GIT_BRANCH", value: gitBranch }];
for (const aevar of Object.keys(process.env)) {
if (
(aevar.startsWith("GIT") || aevar.startsWith("CI_")) &&
!aevar.toLowerCase().includes("key") &&
!aevar.toLowerCase().includes("token") &&
!aevar.toLowerCase().includes("pass") &&
process.env[aevar] &&
process.env[aevar].length
) {
environmentVars.push({
name: aevar,
value: process.env[aevar],
});
}
}
if (!environmentVars.length) {
environmentVars = undefined;
}
aformulation.workflows = [
{
"bom-ref": uuidv4(),
uid: uuidv4(),
inputs: [
{
source: { ref: originUrl },
environmentVars,
},
],
taskTypes: ["build", "clone"],
},
];
formulation.push(aformulation);
}
return { formulation, provides };
};
/**
* Function to create metadata block
*
*/
function addMetadata(parentComponent = {}, options = {}, context = {}) {
// DO NOT fork this project to just change the vendor or author's name
// Try to contribute to this project by sending PR or filing issues
const tools = addToolsSection(options, context);
const authors = addAuthorsSection(options);
const lifecycles =
options.specVersion >= 1.5 ? addLifecyclesSection(options) : undefined;
const metadata = {
timestamp: getTimestamp(),
tools,
authors,
supplier: undefined,
};
if (lifecycles) {
metadata.lifecycles = lifecycles;
}
if (parentComponent && Object.keys(parentComponent).length) {
if (parentComponent) {
cleanParentComponent(parentComponent);
if (!parentComponent["purl"] && parentComponent["bom-ref"]) {
parentComponent["purl"] = encodeForPurl(parentComponent["bom-ref"]);
}
}
if (parentComponent?.components) {
const parentFullName = componentToSimpleFullName(parentComponent);
const subComponents = [];
const addedSubComponents = {};
for (const comp of parentComponent.components) {
cleanParentComponent(comp);
if (comp.name && comp.type) {
const fullName = componentToSimpleFullName(comp);
// Fixes #479
// Prevent the parent component from also appearing as a sub-component
// We cannot use purl or bom-ref here since they would not match
// purl - could have application on one side and a different type
// bom-ref could have qualifiers on one side
// Ignore components that have the same name as the parent component but with latest as the version.
// These are default components created based on directory names
if (
fullName !== parentFullName &&
!(
(comp.name === parentComponent.name ||
comp.name === `${parentComponent.name}:latest`) &&
comp.version === "latest"
)
) {
if (!comp["bom-ref"]) {
comp["bom-ref"] = `pkg:${comp.type}/${decodeURIComponent(
fullName,
)}`;
}
if (!addedSubComponents[comp["bom-ref"]]) {
subComponents.push(comp);
addedSubComponents[comp["bom-ref"]] = true;
}
}
}
} // for
parentComponent.components = subComponents;
}
metadata.component = parentComponent;
}
if (options) {
const mproperties = [];
if (options.exportData) {
const inspectData = options.exportData.inspectData;
if (inspectData) {
if (inspectData.Id) {
mproperties.push({
name: "oci:image:Id",
value: inspectData.Id,
});
}
if (
inspectData.RepoTags &&
Array.isArray(inspectData.RepoTags) &&
inspectData.RepoTags.length
) {
mproperties.push({
name: "oci:image:RepoTag",
value: inspectData.RepoTags[0],
});
}
if (
inspectData.RepoDigests &&
Array.isArray(inspectData.RepoDigests) &&
inspectData.RepoDigests.length
) {
mproperties.push({
name: "oci:image:RepoDigest",
value: inspectData.RepoDigests[0],
});
}
if (inspectData.Created) {
mproperties.push({
name: "oci:image:Created",
value: inspectData.Created,
});
}
if (inspectData.Architecture) {
mproperties.push({
name: "oci:image:Architecture",
value: inspectData.Architecture,
});
}
if (inspectData.Os) {
mproperties.push({
name: "oci:image:Os",
value: inspectData.Os,
});
}
}
const manifestList = options.exportData.manifest;
if (manifestList && Array.isArray(manifestList) && manifestList.length) {
const manifest = manifestList[0] || {};
if (manifest.Config) {
mproperties.push({
name: "oci:image:manifest:Config",
value: manifest.Config,
});
}
if (
manifest.Layers &&
Array.isArray(manifest.Layers) &&
manifest.Layers.length
) {
mproperties.push({
name: "oci:image:manifest:Layers",
value: manifest.Layers.join("\\n"),
});
}
}
const lastLayerConfig = options.exportData.lastLayerConfig;
if (lastLayerConfig) {
if (lastLayerConfig.id) {
mproperties.push({
name: "oci:image:lastLayer:Id",
value: lastLayerConfig.id,
});
}
if (lastLayerConfig.parent) {
mproperties.push({
name: "oci:image:lastLayer:ParentId",
value: lastLayerConfig.parent,
});
}
if (lastLayerConfig.created) {
mproperties.push({
name: "oci:image:lastLayer:Created",
value: lastLayerConfig.created,
});
}
if (lastLayerConfig.config) {
const env = lastLayerConfig.config.Env;
if (env && Array.isArray(env) && env.length) {
mproperties.push({
name: "oci:image:lastLayer:Env",
value: env.join("\\n"),
});
}
const ccmd = lastLayerConfig.config.Cmd;
if (ccmd && Array.isArray(ccmd) && ccmd.length) {
mproperties.push({
name: "oci:image:lastLayer:Cmd",
value: ccmd.join(" "),
});
}
}
}
}
if (options.allOSComponentTypes?.length) {
mproperties.push({
name: "oci:image:componentTypes",
value: options.allOSComponentTypes.join("\\n"),
});
}
if (mproperties.length) {
metadata.properties = mproperties;
}
}
return metadata;
}
/**
* Method to create external references
*
* @param {Array | Object} opkg
* @returns {Array}
*/
function addExternalReferences(opkg) {
let externalReferences = [];
let pkgList = [];
if (Array.isArray(opkg)) {
pkgList = opkg;
} else {
pkgList = [opkg];
}
for (const pkg of pkgList) {
if (pkg.externalReferences) {
externalReferences = externalReferences.concat(pkg.externalReferences);
} else {
if (pkg.homepage?.url) {
externalReferences.push({
type: pkg.homepage.url.includes("git") ? "vcs" : "website",
url: pkg.homepage.url,
});
}
if (pkg.bugs?.url) {
externalReferences.push({
type: "issue-tracker",
url: pkg.bugs.url,
});
}
if (pkg.repository?.url) {
externalReferences.push({
type: "vcs",
url: pkg.repository.url,
});
}
}
}
return externalReferences;
}
/**
* For all modules in the specified package, creates a list of
* component objects from each one.
*
* @param {Object} options CLI options
* @param {Object} allImports All imports
* @param {Object} pkg Package object
* @param {string} ptype Package type
*/
export function listComponents(options, allImports, pkg, ptype = "npm") {
const compMap = {};
const isRootPkg = ptype === "npm";
if (Array.isArray(pkg)) {
pkg.forEach((p) => {
addComponent(options, allImports, p, ptype, compMap, false);
});
} else {
addComponent(options, allImports, pkg, ptype, compMap, isRootPkg);
}
return Object.keys(compMap).map((k) => compMap[k]);
}
/**
* Given the specified package, create a CycloneDX component and add it to the list.
*/
function addComponent(
options,
allImports,
pkg,
ptype,
compMap,
isRootPkg = false,
) {
if (!pkg || pkg.extraneous) {
return;
}
if (!isRootPkg) {
const pkgIdentifier = parsePackageJsonName(pkg.name);
const author = pkg.author || undefined;
const publisher = pkg.publisher || undefined;
let group = pkg.group || pkgIdentifier.scope;
// Create empty group
group = group || "";
const name = pkgIdentifier.fullName || pkg.name || "";
// name is mandatory
if (!name) {
return;
}
if (!ptype && pkg.qualifiers && pkg.qualifiers.type === "jar") {
ptype = "maven";
}
const version = pkg.version || "";
const licenses = pkg.licenses || getLicenses(pkg);
let purl =
pkg.purl ||
new PackageURL(
ptype,
encodeForPurl(group),
encodeForPurl(name),
version,
pkg.qualifiers,
encodeForPurl(pkg.subpath),
);
// There is no purl for cryptographic-asset
if (ptype === "cryptographic-asset") {
purl = undefined;
}
const purlString = purl.toString();
const description = pkg.description || undefined;
let compScope = pkg.scope;
if (allImports) {
const impPkgs = Object.keys(allImports);
if (
impPkgs.includes(name) ||
impPkgs.includes(`${group}/${name}`) ||
impPkgs.includes(`@${group}/${name}`) ||
impPkgs.includes(group) ||
impPkgs.includes(`@${group}`)
) {
compScope = "required";
} else if (impPkgs.length) {
compScope = "optional";
}
}
const component = {
author,
publisher,
group,
name,
version,
description,
scope: compScope,
hashes: [],
licenses,
purl: purlString,
externalReferences: addExternalReferences(pkg),
};
component["type"] = determinePackageType(pkg);
component["bom-ref"] = decodeURIComponent(purlString);
if (
component.externalReferences === undefined ||
component.externalReferences.length === 0
) {
delete component.externalReferences;
}
if (options.specVersion < 1.6) {
delete component.omniborId;
delete component.swhid;
}
processHashes(pkg, component);
// Retain evidence
if (
options.specVersion >= 1.5 &&
pkg.evidence &&
Object.keys(pkg.evidence).length
) {
component.evidence = pkg.evidence;
// Convert evidence.identity section to an array for 1.6 and above
if (
options.specVersion >= 1.6 &&
pkg.evidence &&
pkg.evidence.identity &&
!Array.isArray(pkg.evidence.identity)
) {
component.evidence.identity = [pkg.evidence.identity];
}
}
// Retain any tags
if (
options.specVersion >= 1.6 &&
pkg.tags &&
Object.keys(pkg.tags).length
) {
component.tags = pkg.tags;
}
// Retain any component properties and crypto properties
if (pkg.properties?.length) {
component.properties = pkg.properties;
}
if (pkg.cryptoProperties?.length) {
component.cryptoProperties = pkg.cryptoProperties;
}
if (compMap[component.purl]) return; //remove cycles
compMap[component.purl] = component;
}
if (pkg.dependencies) {
Object.keys(pkg.dependencies)
.map((x) => pkg.dependencies[x])
.filter((x) => typeof x !== "string") //remove cycles
.map((x) => addComponent(options, allImports, x, ptype, compMap, false));
}
}
/**
* If the author has described the module as a 'framework', the take their
* word for it, otherwise, identify the module as a 'library'.
*/
function determinePackageType(pkg) {
// Retain the exact component type in certain cases.
if (
[
"application",
"container",
"platform",
"operating-system",
"device",
"device-driver",
"firmware",
"file",
"machine-learning-model",
"data",
"cryptographic-asset",
].includes(pkg.type)
) {
return pkg.type;
}
if (pkg.purl) {
try {
const purl = PackageURL.fromString(pkg.purl);
if (purl.type) {
if (["docker", "oci", "container"].includes(purl.type)) {
return "container";
}
if (["github"].includes(purl.type)) {
return "application";
}
}
for (const cf of frameworksList.all) {
if (
pkg.purl.startsWith(cf) ||
purl.namespace?.includes(cf) ||
purl.name.toLowerCase().includes(cf)
) {
return "framework";
}
}
} catch (e) {
// continue regardless of error
}
} else if (pkg.group) {
if (["actions"].includes(pkg.group)) {
return "application";
}
}
if (Object.prototype.hasOwnProperty.call(pkg, "description")) {
if (pkg.description?.toLowerCase().includes("framework")) {
return "framework";
}
}
if (Object.prototype.hasOwnProperty.call(pkg, "keywords")) {
for (const keyword of pkg.keywords) {
if (keyword && keyword.toLowerCase() === "framework") {
return "framework";
}
}
}
return "library";
}
/**
* Uses the SHA1 shasum (if present) otherwise utilizes Subresource Integrity
* of the package with support for multiple hashing algorithms.
*/
function processHashes(pkg, component) {
if (pkg.hashes) {
// This attribute would be available when we read a bom json directly
// Eg: cyclonedx-maven-plugin. See: Bugs: #172, #175
for (const ahash of pkg.hashes) {
addComponentHash(ahash.alg, ahash.content, component);
}
} else if (pkg._shasum) {
let ahash = { "@alg": "SHA-1", "#text": pkg._shasum };
ahash = { alg: "SHA-1", content: pkg._shasum };
component.hashes.push(ahash);
} else if (pkg._integrity) {
const integrity = parse(pkg._integrity) || {};
// Components may have multiple hashes with various lengths. Check each one
// that is supported by the CycloneDX specification.
if (Object.prototype.hasOwnProperty.call(integrity, "sha512")) {
addComponentHash("SHA-512", integrity.sha512[0].digest, component);
}
if (Object.prototype.hasOwnProperty.call(integrity, "sha384")) {
addComponentHash("SHA-384", integrity.sha384[0].digest, component);
}
if (Object.prototype.hasOwnProperty.call(integrity, "sha256")) {
addComponentHash("SHA-256", integrity.sha256[0].digest, component);
}
if (Object.prototype.hasOwnProperty.call(integrity, "sha1")) {
addComponentHash("SHA-1", integrity.sha1[0].digest, component);
}
}
if (component.hashes.length === 0) {
delete component.hashes; // If no hashes exist, delete the hashes node (it's optional)
}
}
/**
* Adds a hash to component.
*/
function addComponentHash(alg, digest, component) {
let hash = "";
// If it is a valid hash simply use it
if (new RegExp(HASH_PATTERN).test(digest)) {
hash = digest;
} else {
// Check if base64 encoded
const isBase64Encoded =
Buffer.from(digest, "base64").toString("base64") === digest;
hash = isBase64Encoded
? Buffer.from(digest, "base64").toString("hex")
: digest;
}
const ahash = { alg: alg, content: hash };
component.hashes.push(ahash);
}
/**
* Return the BOM in json format including any namespace mapping