First cut

Signed-off-by: Paul Merlin <paul@gradle.com>

.gitignore

@@ -97,3 +97,5 @@ Thumbs.db
 # Ignore built ts files
 __tests__/runner/*
 lib/**/*
+
+.idea

__tests__/checksums.test.ts

@@ -0,0 +1,6 @@
+import * as checksums from '../src/checksums'
+
+test('fetches wrapper jars checksums', async () => {
+    let validChecksums = await checksums.fetchValidChecksums(false)
+    expect(validChecksums.length).toBeGreaterThan(10)
+})

__tests__/find.test.ts

@@ -0,0 +1,10 @@
+import * as path from "path";
+import * as find from '../src/find'
+
+test('finds test data wrapper jars', async () => {
+    let repoRoot = path.resolve('.')
+    let wrapperJars = await find.findWrapperJars(repoRoot)
+    expect(wrapperJars.length).toBe(2)
+    expect(wrapperJars).toContain("__tests__/data/valid/gradle-wrapper.jar")
+    expect(wrapperJars).toContain("__tests__/data/invalid/gradle-wrapper.jar")
+})

__tests__/hash.test.ts

@@ -0,0 +1,7 @@
+import * as path from "path";
+import * as hash from '../src/hash'
+
+test('can sha256 files', async () => {
+    let sha = await hash.sha256File(path.resolve('__tests__/data/invalid/gradle-wrapper.jar'))
+    expect(sha).toEqual("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
+})

__tests__/main.test.ts

@@ -1,27 +0,0 @@
-import {wait} from '../src/wait'
-import * as process from 'process'
-import * as cp from 'child_process'
-import * as path from 'path'
-
-test('throws invalid number', async () => {
-  const input = parseInt('foo', 10)
-  await expect(wait(input)).rejects.toThrow('milliseconds not a number')
-})
-
-test('wait 500 ms', async () => {
-  const start = new Date()
-  await wait(500)
-  const end = new Date()
-  var delta = Math.abs(end.getTime() - start.getTime())
-  expect(delta).toBeGreaterThan(450)
-})
-
-// shows how the runner will run a javascript action with env / stdout protocol
-test('test runs', () => {
-  process.env['INPUT_MILLISECONDS'] = '500'
-  const ip = path.join(__dirname, '..', 'lib', 'main.js')
-  const options: cp.ExecSyncOptions = {
-    env: process.env
-  }
-  console.log(cp.execSync(`node ${ip}`, options).toString())
-})

__tests__/validate.test.ts

@@ -0,0 +1,8 @@
+import * as path from "path";
+import * as validate from '../src/validate'
+
+test('validates wrapper jars', async () => {
+    let invalidWrapperJars = await validate.findInvalidWrapperJars(path.resolve('.'), false)
+    expect(invalidWrapperJars.length).toBe(1)
+    expect(invalidWrapperJars[0]).toEqual("__tests__/data/invalid/gradle-wrapper.jar")
+})

action.yml

@@ -1,10 +1,11 @@
-name: 'Your name here'
-description: 'Provide a description here'
-author: 'Your name or organization here'
+name: 'Gradle Wrapper Check'
+description: 'Check Gradle Wrapper Files'
+author: 'Gradle'
 inputs:
-  myInput:              # change this
-    description: 'input description here'
-    default: 'default value if applicable'
+  allow-snapshots:
+    description: 'Allow snapshot Gradle versions'
+    required: false
+    default: 'false'
 runs:
   using: 'node12'
   main: 'dist/index.js'

jest.config.js

@@ -1,6 +1,6 @@
 module.exports = {
   clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
+  moduleFileExtensions: ['js', 'ts', 'json'],
   testEnvironment: 'node',
   testMatch: ['**/*.test.ts'],
   testRunner: 'jest-circus/runner',

package.json

@@ -25,11 +25,14 @@
   "author": "YourNameOrOrganization",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.0"
+    "@actions/core": "^1.2.0",
+    "@types/nodegit": "^0.26.0",
+    "nodegit": "^0.26.3",
+    "typed-rest-client": "^1.7.1"
   },
   "devDependencies": {
     "@types/jest": "^24.0.23",
-    "@types/node": "^12.7.12",
+    "@types/node": "^12.12.24",
     "@typescript-eslint/parser": "^2.8.0",
     "@zeit/ncc": "^0.20.5",
     "eslint": "^5.16.0",

src/checksums.ts

@@ -0,0 +1,21 @@
+import * as httpm from 'typed-rest-client/HttpClient'
+
+const httpc = new httpm.HttpClient("eskatos/gradle-wrapper-check");
+
+export async function fetchValidChecksums(allowSnapshots: boolean): Promise<string[]> {
+    let all: any[] = await httpGetJson('https://services.gradle.org/versions/all')
+    let withChecksum = all.filter(entry => entry.hasOwnProperty('wrapperChecksumUrl'))
+    let allowed = withChecksum.filter(entry => allowSnapshots || !entry.snapshot)
+    let checksumUrls: string[] = allowed.map(entry => entry.wrapperChecksumUrl)
+    let checksums = await Promise.all(checksumUrls.map((url: string) => httpGetText(url)))
+    return [...new Set(checksums)]
+}
+
+async function httpGetJson(url: string): Promise<any> {
+    return JSON.parse(await httpGetText(url));
+}
+
+async function httpGetText(url: string): Promise<string> {
+    const response = await httpc.get(url);
+    return await response.readBody();
+}

src/find.ts

@@ -0,0 +1,31 @@
+import {Repository, Commit, Tree, TreeEntry} from 'nodegit'
+
+
+export async function findWrapperJars(gitRepoPath: string): Promise<string[]> {
+
+    let repo: Repository = await Repository.open(gitRepoPath)
+    let commit: Commit = await repo.getMasterCommit()
+    let tree: Tree = await commit.getTree()
+    let walker = tree.walk()
+
+    let prom: Promise<string[]> = new Promise(((resolve, reject) => {
+
+        let wrapperJars: string[] = []
+
+        walker.on("entry", (entry: TreeEntry) => {
+            let path = entry.path()
+            if (path.endsWith('gradle-wrapper.jar')) {
+                wrapperJars.push(path)
+            }
+        })
+        walker.on("error", (error) => {
+            reject(error)
+        })
+        walker.on("end", (trees) => {
+            resolve(wrapperJars)
+        })
+
+    }))
+    walker.start()
+    return prom
+}

src/hash.ts

@@ -0,0 +1,12 @@
+import * as crypto from "crypto"
+import * as fs from "fs"
+
+export async function sha256File(path: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const hash = crypto.createHash("sha256")
+        fs.createReadStream(path)
+            .on("data", data => hash.update(data))
+            .on("end", () => resolve(hash.digest("hex")))
+            .on("error", error => reject(error))
+    })
+}

src/main.ts

@@ -1,16 +1,16 @@
+import * as path from "path";
 import * as core from '@actions/core'
-import {wait} from './wait'
 
-async function run(): Promise<void> {
+import * as validate from "./validate"
+
+
+export async function run(): Promise<void> {
     try {
-    const ms: string = core.getInput('milliseconds')
-    core.debug(`Waiting ${ms} milliseconds ...`)
-
-    core.debug(new Date().toTimeString())
-    await wait(parseInt(ms, 10))
-    core.debug(new Date().toTimeString())
-
-    core.setOutput('time', new Date().toTimeString())
+        const allowSnapshots = core.getInput("allow-snapshots") == "true"
+        const invalidWrapperJars = await validate.findInvalidWrapperJars(path.resolve('.'), allowSnapshots)
+        if (invalidWrapperJars.length > 0) {
+            core.setFailed("Invalid wrapper jars " + invalidWrapperJars)
+        }
     } catch (error) {
         core.setFailed(error.message)
     }

src/validate.ts

@@ -0,0 +1,21 @@
+import * as find from "./find"
+import * as checksums from "./checksums"
+import * as hash from "./hash"
+
+
+export async function findInvalidWrapperJars(gitRepoRoot: string, allowSnapshots: boolean): Promise<string[]> {
+
+    const wrapperJars = await find.findWrapperJars(gitRepoRoot)
+    if (wrapperJars.length > 0) {
+        const validChecksums = await checksums.fetchValidChecksums(allowSnapshots)
+        const invalidWrapperJars: string[] = []
+        for (let wrapperJar of wrapperJars) {
+            const sha = await hash.sha256File(wrapperJar)
+            if (validChecksums.indexOf(sha) < 0) {
+                invalidWrapperJars.push(wrapperJar)
+            }
+        }
+        return invalidWrapperJars
+    }
+    return []
+}

src/wait.ts

@@ -1,9 +0,0 @@
-export async function wait(milliseconds: number): Promise<string> {
-  return new Promise(resolve => {
-    if (isNaN(milliseconds)) {
-      throw new Error('milliseconds not a number')
-    }
-
-    setTimeout(() => resolve('done!'), milliseconds)
-  })
-}