snyk-docker-plugin/lib/extractor/docker-archive/index.ts

Snyk CLI docker plugin

import { normalize as normalizePath } from "path";
import { HashAlgorithm } from "../../types";

import { DockerArchiveManifest } from "../types";
export { extractArchive } from "./layer";

export function getManifestLayers(manifest: DockerArchiveManifest) {
  return manifest.Layers.map((layer) => normalizePath(layer));
}

export function getImageIdFromManifest(
  manifest: DockerArchiveManifest,
): string {
  try {
    const imageId = manifest.Config.split(".")[0];
    if (imageId.includes(":")) {
      // imageId includes the algorithm prefix
      return imageId;
    }
    return `${HashAlgorithm.Sha256}:${imageId}`;
  } catch (err) {
    throw new Error("Failed to extract image ID from archive manifest");
  }
}