test,doc,sea: run SEA tests on ppc64

The recent Postject upgrade, nodejs#48072,
included a performance improvement for the injection operation
(see nodejs/postject#86), so now it might be
possible to run the SEA tests on the ppc64 architecture runners on
Jenkins, which was previously getting timed out.

Signed-off-by: Darshan Sen <raisinten@gmail.com>
PR-URL: nodejs#48111
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: RaisinTen

test/common/sea.js

@@ -0,0 +1,88 @@
+'use strict';
+
+const common = require('../common');
+const fixtures = require('../common/fixtures');
+
+const { readFileSync } = require('fs');
+const { execFileSync } = require('child_process');
+
+function skipIfSingleExecutableIsNotSupported() {
+  if (!process.config.variables.single_executable_application)
+    common.skip('Single Executable Application support has been disabled.');
+
+  if (!['darwin', 'win32', 'linux'].includes(process.platform))
+    common.skip(`Unsupported platform ${process.platform}.`);
+
+  if (process.platform === 'linux' && process.config.variables.is_debug === 1)
+    common.skip('Running the resultant binary fails with `Couldn\'t read target executable"`.');
+
+  if (process.config.variables.node_shared)
+    common.skip('Running the resultant binary fails with ' +
+      '`/home/iojs/node-tmp/.tmp.2366/sea: error while loading shared libraries: ' +
+      'libnode.so.112: cannot open shared object file: No such file or directory`.');
+
+  if (process.config.variables.icu_gyp_path === 'tools/icu/icu-system.gyp')
+    common.skip('Running the resultant binary fails with ' +
+      '`/home/iojs/node-tmp/.tmp.2379/sea: error while loading shared libraries: ' +
+      'libicui18n.so.71: cannot open shared object file: No such file or directory`.');
+
+  if (!process.config.variables.node_use_openssl || process.config.variables.node_shared_openssl)
+    common.skip('Running the resultant binary fails with `Node.js is not compiled with OpenSSL crypto support`.');
+
+  if (process.config.variables.want_separate_host_toolset !== 0)
+    common.skip('Running the resultant binary fails with `Segmentation fault (core dumped)`.');
+
+  if (process.platform === 'linux') {
+    const osReleaseText = readFileSync('/etc/os-release', { encoding: 'utf-8' });
+    const isAlpine = /^NAME="Alpine Linux"/m.test(osReleaseText);
+    if (isAlpine) common.skip('Alpine Linux is not supported.');
+
+    if (process.arch === 's390x') {
+      common.skip('On s390x, postject fails with `memory access out of bounds`.');
+    }
+  }
+}
+
+function injectAndCodeSign(targetExecutable, resource) {
+  const postjectFile = fixtures.path('postject-copy', 'node_modules', 'postject', 'dist', 'cli.js');
+  execFileSync(process.execPath, [
+    postjectFile,
+    targetExecutable,
+    'NODE_SEA_BLOB',
+    resource,
+    '--sentinel-fuse', 'NODE_SEA_FUSE_fce680ab2cc467b6e072b8b5df1996b2',
+    ...process.platform === 'darwin' ? [ '--macho-segment-name', 'NODE_SEA' ] : [],
+  ]);
+
+  if (process.platform === 'darwin') {
+    execFileSync('codesign', [ '--sign', '-', targetExecutable ]);
+    execFileSync('codesign', [ '--verify', targetExecutable ]);
+  } else if (process.platform === 'win32') {
+    let signtoolFound = false;
+    try {
+      execFileSync('where', [ 'signtool' ]);
+      signtoolFound = true;
+    } catch (err) {
+      console.log(err.message);
+    }
+    if (signtoolFound) {
+      let certificatesFound = false;
+      try {
+        execFileSync('signtool', [ 'sign', '/fd', 'SHA256', targetExecutable ]);
+        certificatesFound = true;
+      } catch (err) {
+        if (!/SignTool Error: No certificates were found that met all the given criteria/.test(err)) {
+          throw err;
+        }
+      }
+      if (certificatesFound) {
+        execFileSync('signtool', 'verify', '/pa', 'SHA256', targetExecutable);
+      }
+    }
+  }
+}
+
+module.exports = {
+  skipIfSingleExecutableIsNotSupported,
+  injectAndCodeSign,
+};