From 9bad51196bd3b1cb65c3beda39da231c4f172029 Mon Sep 17 00:00:00 2001
From: Bryan Roe <git.bryan.roe@techsavvydude.com>
Date: Thu, 28 Jan 2021 21:32:59 -0800
Subject: [PATCH] Fixed selfupdate for Alpine

---
 agents/meshcore.js     | 29 +++++++++++++++++++++++++----
 agents/recoverycore.js | 23 +++++++++++++++++++++--
 2 files changed, 46 insertions(+), 6 deletions(-)

diff --git a/agents/meshcore.js b/agents/meshcore.js
index c554f3f1..50f40117 100644
--- a/agents/meshcore.js
+++ b/agents/meshcore.js
@@ -3841,16 +3841,37 @@ function closeDescriptors(libc, descriptors)
         }
     }
 }
-function linux_execv(name, agentfilename, sessionid) {
+function linux_execv(name, agentfilename, sessionid)
+{
     var libs = require('monitor-info').getLibInfo('libc');
     var libc = null;
 
-    while (libs.length > 0) {
-        try {
+    if ((libs.length == 0 || libs.length == null) && require('MeshAgent').ARCHID == 33)
+    {
+        var child = require('child_process').execFile('/bin/sh', ['sh']);
+        child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
+        child.stderr.str = ''; child.stderr.on('data', function (c) { this.str += c.toString(); });
+        child.stdin.write("ls /lib/libc.* | tr '\\n' '`' | awk -F'`' '{ " + ' printf "["; DEL=""; for(i=1;i<NF;++i) { printf "%s{\\"path\\":\\"%s\\"}",DEL,$i; DEL=""; } printf "]"; }\'\nexit\n');
+        child.waitExit();
+
+        try
+        {
+            libs = JSON.parse(child.stdout.str.trim());
+        }
+        catch(e)
+        {
+        }
+    }
+
+    while (libs.length > 0)
+    {
+        try
+        {
             libc = require('_GenericMarshal').CreateNativeProxy(libs.pop().path);
             break;
         }
-        catch (e) {
+        catch (e)
+        {
             libc = null;
             continue;
         }
diff --git a/agents/recoverycore.js b/agents/recoverycore.js
index 9462fcf9..e8c2a7bd 100644
--- a/agents/recoverycore.js
+++ b/agents/recoverycore.js
@@ -174,11 +174,30 @@ function closeDescriptors(libc, descriptors)
     }
 }
 
-function linux_execv(name, agentfilename, sessionid) {
+function linux_execv(name, agentfilename, sessionid)
+{
     var libs = require('monitor-info').getLibInfo('libc');
     var libc = null;
 
-    while (libs.length > 0) {
+    if ((libs.length == 0 || libs.length == null) && require('MeshAgent').ARCHID == 33)
+    {
+        var child = require('child_process').execFile('/bin/sh', ['sh']);
+        child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
+        child.stderr.str = ''; child.stderr.on('data', function (c) { this.str += c.toString(); });
+        child.stdin.write("ls /lib/libc.* | tr '\\n' '`' | awk -F'`' '{ " + ' printf "["; DEL=""; for(i=1;i<NF;++i) { printf "%s{\\"path\\":\\"%s\\"}",DEL,$i; DEL=""; } printf "]"; }\'\nexit\n');
+        child.waitExit();
+
+        try
+        {
+            libs = JSON.parse(child.stdout.str.trim());
+        }
+        catch(e)
+        {
+        }
+    }
+
+    while (libs.length > 0)
+    {
         try {
             libc = require('_GenericMarshal').CreateNativeProxy(libs.pop().path);
             break;