From 09300234fcbc40d147aa5ee4bae666a911b6a039 Mon Sep 17 00:00:00 2001
From: Martin Winkler <efelon@winklerfamilie.eu>
Date: Mon, 21 Dec 2020 12:24:47 +0100
Subject: [PATCH] Added step to downgrade xmpp dependencies to avoid
 "callbackIQ crash"

---
 seqs/fhem.sh | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/seqs/fhem.sh b/seqs/fhem.sh
index f49a870..0b9ef79 100755
--- a/seqs/fhem.sh
+++ b/seqs/fhem.sh
@@ -78,6 +78,63 @@ step_32() {
 }
 systemdConfigLoc="/etc/systemd/system"
 
+step_34_info() { echo "Downgrade $toolName jabber dependencies (callbackIQ -> FHEM crash)"; }
+step_34_alias() { ALIAS="downgrade_xmpp"; }
+step_34() {
+  if [ ! -f $libnetDown ]; then
+    exe wget "$libnetUrl" -O "$libnetDown"
+    endReturn -o $? "Download of $libnetUrl failed"
+  fi
+  if [ ! -f $libxmlDown ]; then
+    exe wget "$libxmlUrl" -O "$libxmlDown"
+    endReturn -o $? "Download of $libxmlUrl failed"
+  fi
+
+  local aptOption=
+  if [ $QUIET -ne 0 ] ; then
+    aptOption="-y"
+  else
+    aptOption=""
+  fi
+
+  exe apt remove libnet-jabber-perl $aptOption
+  saveReturn $?
+  exe apt remove libnet-xmpp-perl $aptOption
+  saveReturn $?
+  exe apt remove libxml-stream-perl $aptOption
+  saveReturn $?
+  endReturn "Failed removing packages; Manual fix required"
+
+  exe dpkg -i "$libxmlDown"
+  saveReturn $?
+  exe dpkg -i "$libnetDown"
+  saveReturn $?
+  exe apt install libnet-jabber-perl $aptOption 
+  saveReturn $?
+  endReturn "Failed removing packages; Manual fix required"
+
+  exe rm "$libxmlDown" "$libnetDown"
+}
+libnetName="libnet-xmpp-perl_1.02-3_all.deb"
+libnetDown="/tmp/$libnetName"
+libnetUrl="http://ftp.de.debian.org/debian-archive/debian/pool/main/libn/libnet-xmpp-perl/$libnetName"
+libxmlName="libxml-stream-perl_1.23-2_all.deb"
+libxmlDown="/tmp/$libxmlName"
+libxmlUrl="http://ftp.de.debian.org/debian/pool/main/libx/libxml-stream-perl/$libxmlName"
+
+step_35_info() { echo "Pin downgraded $toolName jabber dependencies"; }
+step_35() {
+  addConf -s "$aptPinXmpp" "$aptPinFile"
+}
+aptPinFile="/etc/apt/preferences.d/00_FhemJabber"
+aptPinXmpp="Package: libnet-xmpp-perl
+Pin: version 1.02-3*
+Pin-Priority: 1000 
+
+Package: libxml-stream-perl
+Pin: version 1.23-2
+Pin-Priority: 1000"
+
 step_40_info() { echo "Execute fhem [COMMAND]"; }
 step_40_alias() { ALIAS="exe"; }
 step_40() {