initial version of a command line invocation

Author: pes10k

js/Cargo.lock

@@ -0,0 +1,140 @@
+#!/usr/bin/env node
+
+const { text } = require('node:stream/consumers')
+
+const { ArgumentDefaultsHelpFormatter, ArgumentParser, FileType } = require('argparse')
+
+const adblockRust = require('./index.js')
+const adblockRustPackage = require('../package.json')
+
+// These are defined by different content filter projects (AdBlock Plus,
+// uBlockOrigin, AdGuard, etc.).
+// For example, https://github.com/gorhill/uBlock/wiki/Static-filter-syntax
+const filterListRequestTypes = [
+  'beacon',
+  'csp_report',
+  'document',
+  'font',
+  'image',
+  'media',
+  'object',
+  'ping',
+  'script',
+  'stylesheet',
+  'sub_frame',
+  'websocket',
+  'xhr',
+  'other',
+  'speculative',
+  'web_manifest',
+  'xbl',
+  'xml_dtd',
+  'xslt'
+]
+
+// These values are defined by Blink, in `Resource::ResourceTypeToString`.
+// See third_party/blink/renderer/platform/loader/fetch/resource.h.
+// The OTHER catch all case covers the additional types
+// defined in `blink::Resource::InitiatorTypeNameToString`.
+//
+// See https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/platform/loader/fetch/resource.cc
+/* eslint-disable quote-props */
+const chromiumRequestTypeMapping = {
+  'Attribution resource': 'other',
+  'Audio': 'media',
+  'CSS resource': 'stylesheet',
+  'CSS stylesheet': 'stylesheet',
+  'Dictionary': 'other',
+  'Document': 'document',
+  'Fetch': 'xhr',
+  'Font': 'font',
+  'Icon': 'other',
+  'Image': 'image',
+  'Internal resource': 'other',
+  'Link element resource': 'other',
+  'Link prefetch resource': 'speculative',
+  'Manifest': 'web_manifest',
+  'Mock': 'other',
+  'Other resource': 'other',
+  'Processing instruction': 'other',
+  'Script': 'script',
+  'SpeculationRule': 'speculative',
+  'SVG document': 'media',
+  'SVG Use element resource': 'media',
+  'Text track': 'other',
+  'Track': 'other',
+  'User Agent CSS resource': 'stylesheet',
+  'Video': 'media',
+  'XML resource': 'document',
+  'XMLHttpRequest': 'xhr',
+  'XSL stylesheet': 'xslt'
+}
+/* eslint-enable quote-props */
+
+const parser = new ArgumentParser({
+  add_help: true,
+  formatter_class: ArgumentDefaultsHelpFormatter,
+  description: 'Check whether a URL would be blocked by given filter list rules'
+})
+parser.add_argument('-v', '--version', {
+  action: 'version',
+  version: adblockRustPackage.version
+})
+
+parser.add_argument('--url', {
+  required: true,
+  type: URL,
+  help: 'The full URL to check against the provided filter lists.'
+})
+
+const requestTypeGroup = parser.add_mutually_exclusive_group(true)
+requestTypeGroup.add_argument('--type', {
+  help: 'The type of the request, using the types defined by ' +
+        'filter list projects',
+  choices: filterListRequestTypes
+})
+requestTypeGroup.add_argument('--chromium-type', {
+  help: 'The type of the request, using the types defined by chromium',
+  choices: Object.keys(chromiumRequestTypeMapping)
+})
+
+parser.add_argument('--context-url', {
+  required: true,
+  type: URL,
+  help: 'The security context the request occurred in, as a full URL'
+})
+parser.add_argument('--rule-files', {
+  required: true,
+  type: FileType('r'),
+  nargs: '*',
+  help: 'One or more paths to files of filter list rules to check the ' +
+        'request against'
+})
+parser.add_argument('--verbose', {
+  default: false,
+  action: 'store_true',
+  help: 'Print information about what rule(s) the request matched.'
+})
+
+;(async () => {
+  const args = parser.parse_args()
+
+  const filterSet = new adblockRust.FilterSet(true)
+  for (const aRuleFile of args.rule_files) {
+    const rulesText = await text(aRuleFile)
+    filterSet.addFilters(rulesText.split('\n'))
+  }
+
+  const engine = new adblockRust.Engine(filterSet, true)
+  const result = engine.check(
+    args.url.toString(),
+    args.context_url.toString(),
+    args.type || chromiumRequestTypeMapping[args.chromium_type],
+    true
+  )
+
+  if (args.verbose) {
+    console.log(result)
+  }
+  process.exit(result.matched ? 0 : 1)
+})()

js/check.js

@@ -28,12 +28,14 @@
     "url": "git+https://github.com/brave/adblock-rust.git"
   },
   "dependencies": {
+    "argparse": "^2.0.1",
     "cargo-cp-artifact": "^0.1"
   },
   "scripts": {
     "build": "cd js && cargo-cp-artifact -nc index.node -- cargo build --message-format=json-render-diagnostics",
     "build-debug": "npm run build --",
     "build-release": "npm run build -- --release",
+    "check": "node ./js/check.js",
     "update-lists": "node data/update-lists.js",
     "postinstall": "npm run build-release",
     "test": "cargo test"