From db9f71beb75b04a89584a3ce10ee2c7045269ff5 Mon Sep 17 00:00:00 2001
From: Christopher Davies <github@christophilus.com>
Date: Fri, 31 Aug 2018 08:15:38 -0400
Subject: [PATCH] Fix #22579

---
 .../server/browsers/chromium/paths.js         |  3 +++
 .../reporting/server/browsers/install.js      | 20 +++++++++----------
 .../server/browsers/phantom/paths.js          |  3 +++
 3 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/x-pack/plugins/reporting/server/browsers/chromium/paths.js b/x-pack/plugins/reporting/server/browsers/chromium/paths.js
index edfb6ed1f7332..9da1451440235 100644
--- a/x-pack/plugins/reporting/server/browsers/chromium/paths.js
+++ b/x-pack/plugins/reporting/server/browsers/chromium/paths.js
@@ -13,16 +13,19 @@ export const paths = {
     platforms: ['darwin', 'freebsd', 'openbsd'],
     archiveFilename: 'chromium-4747cc2-darwin.zip',
     archiveChecksum: '3f509e2fa994da3a1399d18d03b6eef7',
+    rawChecksum: 'c657bdde14f10b555b9d7ecb644ef695',
     binaryRelativePath: 'headless_shell-darwin/headless_shell',
   }, {
     platforms: ['linux'],
     archiveFilename: 'chromium-4747cc2-linux.zip',
     archiveChecksum: '8f361042d0fc8a84d60cd01777ec260f',
+    rawChecksum: '8dfa6f823c663aa860ccdfa11de6713f',
     binaryRelativePath: 'headless_shell-linux/headless_shell'
   }, {
     platforms: ['win32'],
     archiveFilename: 'chromium-4747cc2-windows.zip',
     archiveChecksum: 'fac0967cd54bb2492a5a858fbefdf983',
+    rawChecksum: 'b46de931336a341503d740ec692acbbd',
     binaryRelativePath: 'headless_shell-windows\\headless_shell.exe'
   }]
 };
diff --git a/x-pack/plugins/reporting/server/browsers/install.js b/x-pack/plugins/reporting/server/browsers/install.js
index 239fa5bad77ab..7b3e36c8b7f30 100644
--- a/x-pack/plugins/reporting/server/browsers/install.js
+++ b/x-pack/plugins/reporting/server/browsers/install.js
@@ -6,14 +6,12 @@
 
 import fs from 'fs';
 import path from 'path';
-import { promisify } from 'bluebird';
-import { extract } from './extract';
+import { promisify } from 'util';
 import { BROWSERS_BY_TYPE } from './browsers';
+import { extract } from './extract';
+import { md5 } from './download/checksum';
 
-const fsp = {
-  access: promisify(fs.access, fs),
-  chmod: promisify(fs.chmod, fs),
-};
+const chmod = promisify(fs.chmod);
 
 /**
  * "install" a browser by type into installs path by extracting the downloaded
@@ -33,13 +31,13 @@ export async function installBrowser(logger, browserConfig, browserType, install
   }
 
   const binaryPath = path.join(installsPath, pkg.binaryRelativePath);
-  try {
-    await fsp.access(binaryPath, fs.X_OK);
-  } catch (accessErr) {
-    // error here means the binary does not exist, so install it
+  const rawChecksum = await md5(binaryPath).catch(() => '');
+
+  if (rawChecksum !== pkg.rawChecksum) {
+    logger.debug(`Extracting ${browserType} to ${binaryPath}`);
     const archive = path.join(browser.paths.archivesPath, pkg.archiveFilename);
     await extract(archive, installsPath);
-    await fsp.chmod(binaryPath, '755');
+    await chmod(binaryPath, '755');
   }
 
   return browser.createDriverFactory(binaryPath, logger, browserConfig);
diff --git a/x-pack/plugins/reporting/server/browsers/phantom/paths.js b/x-pack/plugins/reporting/server/browsers/phantom/paths.js
index e24114ab96ab8..9af8f0c4f9f2d 100644
--- a/x-pack/plugins/reporting/server/browsers/phantom/paths.js
+++ b/x-pack/plugins/reporting/server/browsers/phantom/paths.js
@@ -13,16 +13,19 @@ export const paths = {
     platforms: ['darwin', 'freebsd', 'openbsd'],
     archiveFilename: 'phantomjs-2.1.1-macosx.zip',
     archiveChecksum: 'b0c038bd139b9ecaad8fd321070c1651',
+    rawChecksum: 'bbebe2381435309431c9d4e989aefdeb',
     binaryRelativePath: 'phantomjs-2.1.1-macosx/bin/phantomjs',
   }, {
     platforms: ['linux'],
     archiveFilename: 'phantomjs-2.1.1-linux-x86_64.tar.bz2',
     archiveChecksum: '1c947d57fce2f21ce0b43fe2ed7cd361',
+    rawChecksum: '3f4bbbe5acd45494d8e52941936235f2',
     binaryRelativePath: 'phantomjs-2.1.1-linux-x86_64/bin/phantomjs'
   }, {
     platforms: ['win32'],
     archiveFilename: 'phantomjs-2.1.1-windows.zip',
     archiveChecksum: '4104470d43ddf2a195e8869deef0aa69',
+    rawChecksum: '339f74c735e683502c43512a508e53d6',
     binaryRelativePath: 'phantomjs-2.1.1-windows\\bin\\phantomjs.exe'
   }]
 };