From c8759381e90408a01dd842e837724b77f2d8c237 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 11 Feb 2025 19:14:42 +0100
Subject: [PATCH] global-functions: $WaitForFile: check that we can get
 properties
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Looks like RouterOS 7.18beta2 brings more breakage. Having a file
available in listing is just the first step now. We also need to make
sure that the file properties are accessible... 🤪

I have seen this taking several tens of seconds at least... 🤪🤪 So
let's just try until we have properties available, or the file vanishes.

Reported as SUP-179200. 🤞
---
 global-functions.rsc | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/global-functions.rsc b/global-functions.rsc
index 645ce3c..13dca64 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -1669,6 +1669,7 @@
 
   :global CleanFilePath;
   :global EitherOr;
+  :global LogPrintOnce;
   :global MAX;
 
   :set FileName [ $CleanFilePath $FileName ];
@@ -1682,7 +1683,20 @@
     :delay $Delay;
     :set I ($I + 1);
   }
-  :return true;
+
+  :while ([ :len [ /file/find where name=$FileName ] ] > 0) do={
+    :do {
+      /file/get $FileName;
+      :return true;
+    } on-error={
+      $LogPrintOnce warning $0 \
+          ("Hit the infamous file handling breakage (SUP-179200) introduced with RouterOS 7.18beta2...");
+    }
+    :delay $Delay;
+    :set Delay ($Delay * 3 / 2);
+  }
+
+  :return false;
 }
 
 # wait to be fully connected (default route is reachable, time is sync, DNS resolves)