@eurekadevsecops/radar/src/util/sarif/transforms/merge.js

Radar is an open-source orchestrator of security scanners.

/*
const util = require('node:util')
const exec = util.promisify(require('node:child_process').exec)
const multitoolPath = require('@microsoft/sarif-multitool')
const path = require('node:path')
module.exports = {
  merge: async (outdir) => {
    const cmd = `${multitoolPath} merge ${path.join(outdir, '*.sarif')} --recurse false --output-directory=${outdir} --output-file=scan.sarif`
    const { stdout, stderr } = await exec(cmd)
  }
}
*/

const fs = require('node:fs')
const path = require('node:path')
module.exports = async (outfile, files) => {
  const sarif = {
    version: '2.1.0',
    $schema: 'https://json.schemastore.org/sarif-2.1.0.json',
    runs: []
  }

  for (const file of files) {
    const content = fs.readFileSync(file, 'utf8')
    const scan = JSON.parse(content)
    for (const run of scan.runs) {
      const tool = {
        driver: {
          name: path.parse(file).name,
          semanticVersion: run.tool.driver.semanticVersion,
          informationUri: run.tool.driver.informationUri,
          properties: run.tool.driver.properties ?? {},
          rules: []
        }
      }

      tool.driver.properties.officialName = run.tool.driver.name

      const rules = new Map()
      for (const result of run.results) {
        rules.set(result.ruleId, true)
      }

      if (Array.isArray(run?.tool?.driver?.rules)) {
        for (const rule of run.tool.driver.rules) {
          if (rules.has(rule.id)) {
            tool.driver.rules.push(rule)
          }
        }
      }

      sarif.runs.push({ tool, invocations: run.invocations, results: run.results })
    }
  }

  // Clean up the SARIF object, to conform to the SARIF schema.
  for (const run of sarif.runs) {
    for (const result of run.results) {
      const partialFingerprints = result.partialFingerprints
      if (partialFingerprints) {
        if (!partialFingerprints.commitSha) delete partialFingerprints.commitSha
        if (!partialFingerprints.email) delete partialFingerprints.email
        if (!partialFingerprints.author) delete partialFingerprints.author
        if (!partialFingerprints.date) delete partialFingerprints.date
        if (!partialFingerprints.commitMessage) delete partialFingerprints.commitMessage
        if (Object.keys(partialFingerprints).length === 0) delete result.partialFingerprints
      }
    }
  }

  fs.writeFileSync(outfile, JSON.stringify(sarif))
}