Merge #2694

2694: fix #2693 r=mergify[bot] a=nextgens

## What type of PR?

bug-fix

## What does this PR do?

Tweak the snuffleupagus rules to make roundcube's caldav work. While at it I have also grepped for other similar cases/problems.

### Related issue(s)
- close #2693

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [ ] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>

towncrier/newsfragments/2693.bugfix

@@ -0,0 +1 @@
+Tweak the snuffleupagus rules to make roundcube's caldav work

webmails/snuffleupagus.rules

@@ -84,7 +84,9 @@ sp.disable_function.function("ini_set").param("option").value("include_path").dr
 sp.disable_function.function("ini_set").param("option").value("open_basedir").drop();
 
 # Detect some backdoors via environment recon
-sp.disable_function.function("ini_get").filename("/var/www/roundcube/vendor/guzzlehttp/guzzle/src/functions.php").param("option").value("allow_url_fopen").allow();
+sp.disable_function.function("ini_get").filename_r("^/var/www/snappymail/snappymail/v/[0-9]+\.[0-9]+\.[0-9]+/app/libraries/RainLoop/Utils\.php$").param("option").value("open_basedir").allow();
+sp.disable_function.function("ini_get").filename("/var/www/roundcube/vendor/guzzlehttp/guzzle/src/Utils.php").param("option").value("allow_url_fopen").allow();
+sp.disable_function.function("ini_get").filename("/var/www/roundcube/plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php").param("option").value_r("suhosin").allow();
 sp.disable_function.function("ini_get").param("option").value("allow_url_fopen").drop();
 sp.disable_function.function("ini_get").param("option").value("open_basedir").drop();
 sp.disable_function.function("ini_get").param("option").value_r("suhosin").drop();