From bfbacdd5c066ee7eac3166341a3a167d3919fdfd Mon Sep 17 00:00:00 2001
From: fengmk2 <fengmk2@gmail.com>
Date: Sat, 19 Mar 2022 23:54:53 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=93=A6=20NEW:=20Support=20libc=20field=20?=
 =?UTF-8?q?on=20conditions=20install?=
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closes https://github.com/cnpm/npminstall/issues/386
---
 lib/download/npm.js | 11 +++++++++++
 lib/utils.js        | 21 ++++++++++++++++++++-
 test/utils.test.js  | 23 +++++++++++++++++++++++
 3 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/lib/download/npm.js b/lib/download/npm.js
index f86dbc7a..ee9f0161 100644
--- a/lib/download/npm.js
+++ b/lib/download/npm.js
@@ -246,6 +246,17 @@ async function download(pkg, options) {
     err.name = 'UnSupportedPlatformError';
     throw err;
   }
+  // dont download pkg in not matched libc
+  if (Array.isArray(pkg.libc)) {
+    const currentLibc = utils.getLibc();
+    debug('currentLibc', currentLibc, pkg.libc)
+    if (!utils.matchPlatform(currentLibc, pkg.libc)) {
+      const errMsg = `[${pkg.name}@${pkg.version}] skip download for reason ${pkg.libc.join(', ')} dont includes your libc ${currentLibc}`;
+      const err = new Error(errMsg);
+      err.name = 'UnSupportedPlatformError';
+      throw err;
+    }
+  }
 
   const ungzipDir = options.ungzipDir || utils.getPackageStorePath(options.storeDir, pkg);
 
diff --git a/lib/utils.js b/lib/utils.js
index 9c1f4789..226a10ee 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -463,7 +463,26 @@ exports.getBugVersions = async (registry, globalOptions) => {
   return pkg.config['bug-versions'];
 };
 
-// match platform or arch
+// detect libc
+// follow yarn impl: https://github.com/yarnpkg/berry/pull/3981/files#diff-f9ba955128e960171ac97ce06b0b0a940bb074af2794429a9f03c75f2a3bd459R10
+exports.getLibc = () => {
+  if (process.platform === 'win32') return null;
+  const report = process.report && process.report.getReport() || {};
+  const sharedObjects = report.sharedObjects || [];
+
+  // Matches the first group if libc, second group if musl
+  const libcRE = /\/(?:(ld-linux-|[^/]+-linux-gnu\/)|(libc.musl-|ld-musl-))/i;
+  for (const sharedObject of sharedObjects) {
+    const m = sharedObject.match(libcRE);
+    if (m) {
+      if (m[1]) return 'libc';
+      if (m[2]) return 'musl';
+    }
+  }
+  return null;
+}
+
+// match platform, arch or libc
 // see https://docs.npmjs.com/cli/v7/configuring-npm/package-json#os
 exports.matchPlatform = (current, osNames) => {
   if (!Array.isArray(osNames) || osNames.length === 0) {
diff --git a/test/utils.test.js b/test/utils.test.js
index a90dc519..3655fe48 100644
--- a/test/utils.test.js
+++ b/test/utils.test.js
@@ -31,6 +31,20 @@ describe('test/utils.test.js', () => {
       assert(utils.matchPlatform('x64', [ 'x64', '!x64' ]));
     });
 
+    it('should match libc names', () => {
+      assert(utils.matchPlatform('glibc', []));
+      assert(utils.matchPlatform('musl', []));
+      assert(utils.matchPlatform(null, []));
+      assert(utils.matchPlatform('glibc', [ 'glibc' ]));
+      assert(utils.matchPlatform('glibc', [ 'glibc', 'musl' ]));
+      assert(utils.matchPlatform('musl', [ 'glibc', 'musl' ]));
+      assert(utils.matchPlatform('musl', [ 'musl' ]));
+      assert(utils.matchPlatform('glibc', [ '!glibc' ]));
+      assert(utils.matchPlatform('musl', [ '!musl' ]));
+      assert(utils.matchPlatform('glibc', [ '!musl', 'glibc' ]));
+      assert(utils.matchPlatform('glibc', [ 'glibc', '!glibc' ]));
+    });
+
     it('should not match os names', () => {
       assert(!utils.matchPlatform('darwin', [ 'linux' ]));
       assert(!utils.matchPlatform('darwin', [ 'win32' ]));
@@ -53,6 +67,15 @@ describe('test/utils.test.js', () => {
       assert(!utils.matchPlatform('mips', [ '!x64', '!mips' ]));
       assert(!utils.matchPlatform('x64', [ '!x64' ]));
     });
+
+    it('should not match libc names', () => {
+      assert(!utils.matchPlatform(null, [ 'musl' ]));
+      assert(!utils.matchPlatform(null, [ 'glibc' ]));
+      assert(!utils.matchPlatform('glibc', [ 'musl' ]));
+      assert(!utils.matchPlatform('musl', [ 'glibc' ]));
+      assert(!utils.matchPlatform('glibc', [ '!glibc' ]));
+      assert(!utils.matchPlatform('musl', [ '!musl' ]));
+    });
   });
 
   describe('findMaxSatisfyingVersion()', () => {