From 3534880f64e3c47e22eee2ca3e0022c95ea389b9 Mon Sep 17 00:00:00 2001
From: casey langen <casey.langen@gmail.com>
Date: Thu, 17 Feb 2022 19:41:07 -0800
Subject: [PATCH] Rough version of standalone dependency scanner. Hardcoded and
 Linux only now, but will be easy to port to macOS.

---
 script/.prettierrc        |  5 +++
 script/scan-standalone.js | 69 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 script/.prettierrc
 create mode 100644 script/scan-standalone.js

diff --git a/script/.prettierrc b/script/.prettierrc
new file mode 100644
index 000000000..e97ea1bfa
--- /dev/null
+++ b/script/.prettierrc
@@ -0,0 +1,5 @@
+{
+  "tabWidth": 2,
+  "useTabs": false,
+  "singleQuote": true
+}
diff --git a/script/scan-standalone.js b/script/scan-standalone.js
new file mode 100644
index 000000000..0c2692a36
--- /dev/null
+++ b/script/scan-standalone.js
@@ -0,0 +1,69 @@
+const { promisify } = require('util');
+const exec = promisify(require('child_process').exec);
+const readdir = promisify(require('fs').readdir);
+
+const validLibraries = new Set([
+  'linux-vdso.so.1',
+  'libstdc++.so.6',
+  'libm.so.6',
+  'libgcc_s.so.1',
+  'libc.so.6',
+  'libz.so.1',
+  'libdl.so.2',
+  '/lib64/ld-linux-x86-64.so.2',
+]);
+
+let errors = 0;
+const path = 'dist/0.96.14/musikcube_standalone_linux_x86_64_0.96.14';
+
+async function ls(leaf) {
+  const output = await readdir(`${path}/${leaf}`);
+  const files = output.filter((fn) => fn.indexOf('.so') !== -1);
+  return files;
+}
+
+async function ldd(fn) {
+  const output = await exec(`ldd ${path}/${fn}`);
+  const problems = output.stdout
+    .split('\n')
+    .map((line) => line.trim())
+    /* libraries resolved properly will exist in the current path; exclude */
+    .filter((line) => !!line && line.indexOf(path) === -1)
+    .filter((line) => line !== 'statically linked')
+    /* libraries are formatted as "<name> [=> <path>] <(offset)>". if there's
+      a fat arrow, just grab everything to the left of it. then, if there's
+      still an offset, strip that as well */
+    .map((line) => line.split(' => ')[0].split(' ')[0].trim())
+    .filter((line) => !validLibraries.has(line));
+  if (!problems.length) {
+    console.log(`${fn}: ok`);
+  } else {
+    console.log(`${fn}: potential problems found`);
+    problems.forEach((line) => console.log(`  * ${line}`));
+    ++errors;
+  }
+}
+
+async function lddDir(leaf) {
+  const files = await ls(leaf);
+  await Promise.allSettled(files.map((fn) => ldd(`${leaf}/${fn}`)));
+}
+
+const main = async () => {
+  await ldd('musikcube');
+  await ldd('musikcubed');
+  await ldd('libmusikcore.so');
+  await lddDir('plugins');
+  await lddDir('lib');
+
+  if (errors) {
+    console.log(
+      `\n\n\n    ***** ${errors} problematic files detected! ***** \n\n\n`
+    );
+    process.exit(1);
+  }
+
+  console.log('\neverything looks good!\n');
+};
+
+main();