snyk-docker-plugin
Version:
Snyk CLI docker plugin
70 lines • 3.21 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getUserInstructionLayersFromConfig = exports.getDetectedLayersInfoFromConfig = exports.getPlatformFromConfig = exports.getRootFsLayersFromConfig = exports.getImageIdFromManifest = exports.getManifestLayers = exports.extractArchive = void 0;
const path_1 = require("path");
const instruction_parser_1 = require("../../dockerfile/instruction-parser");
const types_1 = require("../../types");
var layer_1 = require("./layer");
Object.defineProperty(exports, "extractArchive", { enumerable: true, get: function () { return layer_1.extractArchive; } });
function getManifestLayers(manifest) {
return manifest.Layers.map((layer) => (0, path_1.normalize)(layer));
}
exports.getManifestLayers = getManifestLayers;
function getImageIdFromManifest(manifest) {
try {
const imageId = manifest.Config.split(".")[0];
if (imageId.includes(":")) {
// imageId includes the algorithm prefix
return imageId;
}
return `${types_1.HashAlgorithm.Sha256}:${imageId}`;
}
catch (err) {
throw new Error("Failed to extract image ID from archive manifest");
}
}
exports.getImageIdFromManifest = getImageIdFromManifest;
function getRootFsLayersFromConfig(imageConfig) {
try {
return imageConfig.rootfs.diff_ids;
}
catch (err) {
throw new Error("Failed to extract rootfs array from image config");
}
}
exports.getRootFsLayersFromConfig = getRootFsLayersFromConfig;
function getPlatformFromConfig(imageConfig) {
return imageConfig.os && imageConfig.architecture
? `${imageConfig.os}/${imageConfig.architecture}`
: undefined;
}
exports.getPlatformFromConfig = getPlatformFromConfig;
function getDetectedLayersInfoFromConfig(imageConfig) {
const runInstructions = getUserInstructionLayersFromConfig(imageConfig)
.filter((instruction) => !instruction.empty_layer && instruction.created_by)
.map((instruction) => instruction.created_by.replace("# buildkit", ""));
const dockerfilePackages = (0, instruction_parser_1.getPackagesFromRunInstructions)(runInstructions);
const dockerfileLayers = (0, instruction_parser_1.getLayersFromPackages)(dockerfilePackages);
return { dockerfilePackages, dockerfileLayers };
}
exports.getDetectedLayersInfoFromConfig = getDetectedLayersInfoFromConfig;
function getUserInstructionLayersFromConfig(imageConfig) {
const diffInHours = (d1, d2) => Math.abs(d1 - d2) / 1000 / (60 * 60);
const maxDiffInHours = 5;
const history = imageConfig.history;
if (!history) {
return [];
}
const lastInstructionTime = new Date(history.slice(-1)[0].created);
const userInstructionLayers = history.filter((layer) => {
return (diffInHours(new Date(layer.created), lastInstructionTime) <=
maxDiffInHours);
});
// should only happen if there are no layers created by user instructions
if (userInstructionLayers.length === history.length) {
return [];
}
return userInstructionLayers;
}
exports.getUserInstructionLayersFromConfig = getUserInstructionLayersFromConfig;
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