From 6806ae4a850fc7785a8c05304237cf53b5b8f951 Mon Sep 17 00:00:00 2001
From: Jonathan Bauer
Date: Fri, 23 Dec 2016 13:12:09 +0100
Subject: merge with latest dev version (tm-scripts commit
 f5a59daf8d70a9027118292cd40b18c221897408)

---
 .../data/opt/openslx/vmchooser/data/linux/LIESMICH |  24 ++++
 .../data/opt/openslx/vmchooser/data/linux/README   |  21 ++++
 .../vmchooser/data/linux/includes/00_vars.inc      |  29 +++++
 .../vmchooser/data/linux/includes/10_functions.inc |  51 ++++++++
 .../data/linux/includes/10_preliminaries.inc       |  20 +++
 .../data/linux/includes/15_set_trapping.inc        |  14 +++
 .../vmchooser/data/linux/includes/20_get_creds.inc |  27 ++++
 .../data/linux/includes/30_get_shares.inc          |  22 ++++
 .../data/linux/includes/30_mount_shares.inc        |  66 ++++++++++
 .../data/linux/includes/40_check_fallback.inc      |   8 ++
 .../data/linux/includes/50_postliminaries.inc      |  21 ++++
 .../vmchooser/data/linux/includes/50_umounter.inc  |  12 ++
 .../opt/openslx/vmchooser/data/linux/mnt_shares    |  62 +++++++++
 .../opt/openslx/vmchooser/data/linux/resolution    | 102 +++++++++++++++
 .../vmchooser/data/linux/resolution_standalone     | 138 +++++++++++++++++++++
 .../opt/openslx/vmchooser/data/linux/umnt_shares   |  40 ++++++
 .../opt/openslx/vmchooser/data/linux/vm_installer  |  87 +++++++++++++
 .../opt/openslx/vmchooser/data/linux/vm_runtime    |  97 +++++++++++++++
 18 files changed, 841 insertions(+)
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/LIESMICH
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/README
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/00_vars.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_functions.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_preliminaries.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/15_set_trapping.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/20_get_creds.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_get_shares.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_mount_shares.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/40_check_fallback.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_postliminaries.inc
 create mode 100644 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_umounter.inc
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/mnt_shares
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution_standalone
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/umnt_shares
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_installer
 create mode 100755 core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_runtime

(limited to 'core/modules/run-virt/data/opt/openslx/vmchooser/data/linux')

diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/LIESMICH b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/LIESMICH
new file mode 100644
index 00000000..326af2a4
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/LIESMICH
@@ -0,0 +1,24 @@
+Dieses Paket besteht aus folgenden Skripten:
+
+vm_installer:	Dieses Skript einmalig in einer lokalen, permanenten (also 
+		nicht innerhalb des Poolsystems) Virtuellen Maschine ausführen. 
+		Es schreibt eine systemd-Servicedatei und verlinkt diese, um 
+		beim Systemstart per vm_runtime die Skripte zu Auflösungsan- 
+		passung und Einhängung eventuell übergebener Netzlaufwerke 
+		nach Hochladung der VM in das Poolsystem automatisch zu starten. 
+		Das Skript kann von der gemounteten (Pseudo-)Diskette /dev/fd1 
+		aus oder einzelstehend 	gestartet werden.
+		Unterstützung für init-basierte Systeme folgt noch.
+vm_runtime:	Dieses Skript wird beim booten der VM aufgerufen und patcht 
+		Xsetup, um beim grafischen Start der VM die Skripte shares 
+		und resolution aufzurufen.
+mnt_shares: 	Liest die auf Pseudodiskette gegebene shares.dat aus und hängt 
+		ggf. darin angegebene Netzlaufwerke ein.
+resolution:	Stellt die Auflösung der VM anhand der übergebenen Auflösung 
+		des Grundsystems ein.
+
+resolution_standalone: Einzelstehende Version des resolution-Skriptes, die 
+		keine Vorarbeiten seitens systemd bzw. vm_runtime benötigt.
+		Für geeignete Einbindung innerhalb der VM muss daher selbst 
+		gesorgt werden.
+
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/README b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/README
new file mode 100644
index 00000000..12777c67
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/README
@@ -0,0 +1,21 @@
+This package consists of the following scripts:
+
+vm_installer: 	This script is to be started once in a local, permanent (so 
+		not within the pool system environment) virtual machine. It 
+		writes a systemd service file and links it, so the scripts 
+		for resolution setting and mounting network shares will be 
+		started at boot time at boot time via vm_runtime.
+		It may be run from the mounted (pseudo) disk drive /dev/fd1
+		or from elsewhere.
+		init will be supported at later time.
+vm_runtime:     Will be started at boot time and patches Xsetup, so the 
+		scripts mnt_shares and resolution will be started at graphical 
+		login.
+mnt_shares:     Reads the config file shares.dat from (pseudo) disk drive and 
+		mounts therein given network shares.
+resolution:     Sets resolution within the virtual machine according to base 
+		system resolution given via config file openslx.ini.
+
+resolution_standalone: Standalone version of resolution sctipt. Needs no 
+		preliminary work done by systemd or vm_runtime.
+		One has to embed/start it via adequate means by hand.
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/00_vars.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/00_vars.inc
new file mode 100644
index 00000000..bb7ae3a1
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/00_vars.inc
@@ -0,0 +1,29 @@
+### Variablen #####################################
+LOCALUSER=student
+USERHOME=/home/"$LOCALUSER"
+USERHOMEDIR=/home/"$LOCALUSER"/PERSISTENT
+DISKMOUNTDIR=/mnt/diskmount
+SLXCONFIGFILE="$DISKMOUNTDIR"/openslx.ini
+CONFIGFILE="$DISKMOUNTDIR"/shares.dat
+KEYTEMP=$(mktemp -t XXXXXXXXXX.dat)
+RAWKEYTEMP=$(mktemp -t XXXXXXXXXX.dat)
+BYTES=256
+declare -a ROHSHARES
+
+if [ ! $(mount 2>/dev/null | grep -q "$DISKMOUNTDIR") ]; then
+	[ ! -d "$DISKMOUNTDIR" ]        && mkdir -p "$DISKMOUNTDIR"
+	mount /dev/fd1 "$DISKMOUNTDIR" 2>/dev/null 1>&2		# Zu erl.: Fehlerfangen
+fi
+
+NATADDR=$(head -n 1 "$CONFIGFILE" | cut -f 1 -d$'\t')
+PORT=$(head -n 1 "$CONFIGFILE" | cut -f 2 -d$'\t')
+SCHLUESSEL=$(head -n 1 "$CONFIGFILE" | cut -f 4 -d$'\t')
+GLOBALDOMAINUSER=$(head -n 1 "$CONFIGFILE" | cut -f 5 -d$'\t')
+GLOBALUSER=$(echo "$GLOBALDOMAINUSER" | cut -d '\' -f 2)
+
+REMAPMODE=$(grep 'remapMode=' "$SLXCONFIGFILE" | cut -d '=' -f 2)
+CREATEMISSING=$(grep 'createMissingRemap=' "$SLXCONFIGFILE" | cut -d '=' -f 2)
+
+MOUNTOPTSCIFS="-v -t cifs -o uid=$(id --user "$LOCALUSER"),gid=$(id --group "$LOCALUSER"),forceuid,forcegid,file_mode=0700,dir_mode=0700,nobrl,noacl"
+MOUNTOPTSNFS="-v -t nfs4 -o rw,nosuid,nodev,nolock,intr,hard,sloppy"
+### Variablen Ende ################################
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_functions.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_functions.inc
new file mode 100644
index 00000000..97767c51
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_functions.inc
@@ -0,0 +1,51 @@
+### Funktionen ####################################
+
+function xor()
+{	local RES=($(echo "$1" | sed "s/../0x& /g"))
+	shift 1
+	while [[ "$1" ]]; do
+		local ONE=($(echo "$1" | sed "s/../0x& /g"))
+		local COUNT1=${#RES[@]}
+		if [ $COUNT1 -lt ${#ONE[@]} ]; then
+			COUNT1=${#ONE[@]}
+		fi
+		for (( i = 0; i < $COUNT1; i++ )); do
+			RES[$i]=$((${ONE[$i]:-0} ^ ${RES[$i]:-0}))
+		done
+		shift 1
+	done
+	printf "%02x" "${RES[@]}"
+}
+
+function already_mounted()
+{
+	# Ausgabe: gemountet = true = 0, nicht gemountet = false = 1
+	local AUSGANG
+	mount | grep -q " ${1} " && AUSGANG=0 || AUSGANG=1 
+	return $AUSGANG
+}
+
+function mounter()
+{
+	# Ausgabe: konnte mounten: 0, konnte nicht mounten: 1, schon gemountet 2
+	already_mounted "$3"
+	ERR=$?
+	if [ "$ERR" -eq 0 ]; then
+		logger "openslx sharemapper: $3 already mounted."
+		AUSGANG=2	
+	else	
+		mount $1 $2 $3 2>/dev/null 1>&2
+		ERR=$?
+		if [ "$ERR" -gt 0 ]; then
+			logger "openslx sharemapper: could not mount ${2} to ${3}."
+			AUSGANG=1
+		else
+			logger "openslx sharemapper: ${2} mounted to ${3}."
+			AUSGANG=0	
+		fi
+	fi
+	return $AUSGANG
+}
+
+### Funktionen Ende ###############################
+
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_preliminaries.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_preliminaries.inc
new file mode 100644
index 00000000..bcbd6ec1
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/10_preliminaries.inc
@@ -0,0 +1,20 @@
+preliminaries_native()
+{
+	# USERHOMEDIR=~/PERSISTENT, not ~! ################
+	[ -h "$USERHOMEDIR" ]		&& unlink "$USERHOMEDIR"
+	[ ! -d "$USERHOMEDIR" ]         && mkdir -p "$USERHOMEDIR"
+}
+
+preliminaries_vmware()
+{
+	# USERHOMEDIR=~/PERSISTENT, not ~! ################
+	if [ -d "$USERHOMEDIR" ]; then
+		logger "openslx sharemapper: vmware mode: USERHOMEDIR ${USERHOMEDIR} is a directory, moving to ${USERHOMEDIR}_mov."
+		mv "$USERHOMEDIR" "${USERHOMEDIR}"_mov
+	fi
+
+	[ -h "$USERHOMEDIR" ]		&& unlink "$USERHOMEDIR"
+	logger "openslx sharemapper: vmware mode: linking $USERHOMEDIR to /mnt/hgfs/home."
+	ln -s /mnt/hgfs/home "$USERHOMEDIR"	|| \
+		logger "openslx sharemapper: vmware mode: Could not link to vmware hgfs mount dir."
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/15_set_trapping.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/15_set_trapping.inc
new file mode 100644
index 00000000..c49b99ff
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/15_set_trapping.inc
@@ -0,0 +1,14 @@
+function ausgang()
+{	rm -f "$KEYTEMP"
+	rm -f "$RAWKEYTEMP"
+	# umount "$DISKMOUNTDIR"	# as mounted by systemd now.
+}
+
+function set_trapping()
+{
+	### Trap ##########################################
+	trap ausgang EXIT SIGHUP SIGINT SIGTERM
+	###################################################
+}
+
+set_trapping
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/20_get_creds.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/20_get_creds.inc
new file mode 100644
index 00000000..c6f6ffcb
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/20_get_creds.inc
@@ -0,0 +1,27 @@
+function get_creds()
+{
+	# udp-Socket erzeugen Kanal erzeugen::
+	exec 13<>/dev/udp/"$NATADDR"/"$PORT"
+	
+	# temp. Datei - wer hat Angst vor Nullbytes? Ich! Ich! Ich!
+	head -n 1 "$CONFIGFILE" |cut -f3 -d$'\t' | while read -n 2 CODE; do [ -n "$CODE" ] && printf "\x$CODE"; done >"$KEYTEMP"
+	# Auf Socket fuer Grundsystem schreiben:
+	cat "$KEYTEMP" >&13
+	
+	# Serverantwort pwdaemon in temp. Datei schreiben:
+	timeout 2s dd bs=$BYTES count=1 of="$RAWKEYTEMP" <&13 2>/dev/null
+	
+	# Kanal zu Socket schließen:
+	exec 13<&-
+	exec 13>&-
+	
+	# Wieviele Zeichen (Bytes 1 und 2 der Paketnutzlast)?
+	ANZAHL=$((16#$(dd if=$RAWKEYTEMP bs=1 count=2 2>/dev/null|hexdump -e '1/1 "%02x"')))
+	
+	# Und raus-xor-en:
+	PW=$( xor	$(dd if="$RAWKEYTEMP" bs=1 skip=2 2>/dev/null|hexdump -e '1/1 "%02x"') \
+			$(head -n 1 "$CONFIGFILE" | cut -f 4 -d$'\t') | sed 's/../\\x&/g')
+	
+	PW=$(echo -e "$PW")     # \x...-Ausdrücke zu ASCII
+	PW="${PW:0:${ANZAHL}}"  # ...und Rest nach ANZAHL abhacken.
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_get_shares.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_get_shares.inc
new file mode 100644
index 00000000..70b17236
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_get_shares.inc
@@ -0,0 +1,22 @@
+function get_shares()
+{
+	i=0
+	while read -r LINIE; do
+		ROHSHARES[i]="$LINIE"
+		((i++))
+	done < "$CONFIGFILE"
+	
+#	echo "${#ROHSHARES[@]} eingelesen:"
+#	for (( i = 0; i < ${#ROHSHARES[@]}; i++ )); do
+#		echo -n "$i "
+#		echo "${ROHSHARES[i]}"
+#	done
+	
+	let SHAREZAHL=${#ROHSHARES[@]}-1
+	if [ "$SHAREZAHL" -lt 1 ]; then
+		logger "openslx sharemapper: No shares to map/mount found in config file $CONFIGFILE."
+		exit 0
+	else
+		logger "openslx sharemapper: $SHAREZAHL share(s) found."
+	fi
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_mount_shares.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_mount_shares.inc
new file mode 100644
index 00000000..b1320d01
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/30_mount_shares.inc
@@ -0,0 +1,66 @@
+function mount_shares()
+{
+	for (( CONFIGROW = 1; CONFIGROW < ${#ROHSHARES[@]}; CONFIGROW++ )); do
+		SHAREPATH=$(echo "${ROHSHARES[CONFIGROW]}" | cut -f 1 -d$'\t')          # cifs- oder nfs-Share
+		SHARELETTER=$(echo "${ROHSHARES[CONFIGROW]}" | cut -f 2 -d$'\t' | \
+					sed 's/://g')					# Laufwerksbuchstabe ohne :
+		SHARENAME=$(echo "${ROHSHARES[CONFIGROW]}" | cut -f 3 -d$'\t' | sed 's/ /_/g')	# Leerzeichen raus.
+		SHAREUSER=$(echo "${ROHSHARES[CONFIGROW]}" | cut -f 4 -d$'\t')		# Username, bei Userhome nicht vorhanden
+		SHAREPASS=$(echo "${ROHSHARES[CONFIGROW]}" | cut -f 5 -d$'\t')		# User-PW, bei Userhome nicht vorhanden
+
+		# Sharetyp bestimmen:
+		if [ "${SHAREPATH:0:2}" == '\\' ]; then
+			USER=$(echo "$SHAREUSER"|cut -d '\' -f 2)
+			MOUNTOPTS="$MOUNTOPTSCIFS"
+		else
+			MOUNTOPTS="$MOUNTOPTSNFS"
+		fi
+
+		# User-Homeverzeichnis?
+		if [ "${SHARENAME:0:5}" == "Home-" ]; then
+			logger "openslx sharemapper: home share \"$SHARENAME\" found (for PERSISTENT)."
+			export USER="${GLOBALUSER}"
+			export PASSWD="${PW}"
+			mounter "${MOUNTOPTS}" ${SHAREPATH} ${USERHOMEDIR} 2>/dev/null 1>&2
+			unset USER
+			unset PASSWD
+		else
+			if [ -z "${SHARELETTER}" ]; then
+				logger "openslx sharemapper: $SHARELETTER not found. Do not know where to mount."
+				continue
+			else
+				USERSHAREDIR="${USERHOME}"/SHARE_"${CONFIGROW}"	# ROHSHARES: Zeilennummer; Shares >=1
+				if [ ! -d "$USERSHAREDIR" ]; then
+					mkdir -p "$USERSHAREDIR" 2>/dev/null
+					chown "$LOCALUSER":$(id --group "$LOCALUSER") "$USERSHAREDIR"
+					chmod 700 "$USERSHAREDIR"
+					logger "openslx sharemapper: share mount dir $USERSHAREDIR created."
+				fi
+			fi
+			# Wenn kein Homeverzeichnis, dann share zuerst mit den Credentials aus der share-Konfig
+			# versuchen zu mounten; wenn nicht, dann mit den Hauptcredentials nachversuchen.
+			logger "openslx sharemapper: non-home share \"$SHARENAME\" (${CONFIGROW}) found."
+			export USER="${SHAREUSER}"
+			export PASSWD="${SHAREPASS}"
+			mounter "${MOUNTOPTS}" ${SHAREPATH} ${USERSHAREDIR} 2>/dev/null 1>&2
+			ERR=$?
+			if [ "$ERR" -eq 1 ]; then
+				export USER="${GLOBALUSER}"
+				export PASSWD="${PW}"
+				logger "openslx sharemapper: Could not mount ${USERSHAREDIR}, now trying using user credentials."
+				mounter "${MOUNTOPTS}" ${SHAREPATH} ${USERSHAREDIR} 2>/dev/null 1>&2 \
+				ERR=$?				# ERR merken wg. Links aus USERSHAREDIR
+				if [ "$ERR" -eq 1 ]; then
+					logger "openslx sharemapper: Could not mount ${USERSHAREDIR} even using user credentials; giving up."
+				fi
+				unset USER
+				unset PASSWD
+			fi
+			if [ "$ERR" -eq 0 ]; then
+				logger "openslx sharemapper: Linking ${SHARELETTER} and $SHARENAME, if possible."
+				[ -n "${SHARELETTER}" ] && ln -s "$USERSHAREDIR" "${USERHOME}"/"$SHARELETTER"
+				[ -n "${SHARELETTER}" ] && ln -s "$USERSHAREDIR" "${USERHOME}"/"$SHARENAME"
+			fi
+		fi
+	done
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/40_check_fallback.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/40_check_fallback.inc
new file mode 100644
index 00000000..14a13f77
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/40_check_fallback.inc
@@ -0,0 +1,8 @@
+check_fallback() {
+	if [ $(mount | grep -c " $USERHOMEDIR type cifs \| $USERHOMEDIR type nfs") -lt 1 ]; then
+		logger "openslx sharemapper: fallback mode: home share check failed, doing fallback to vmware mode."
+		preliminaries_vmware
+	else
+		logger "openslx sharemapper: fallback mode: home share check passed, no fallback necessary."
+	fi
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_postliminaries.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_postliminaries.inc
new file mode 100644
index 00000000..f6f1cf7d
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_postliminaries.inc
@@ -0,0 +1,21 @@
+postliminaries_native()
+{
+	# USERHOMEDIR=~/PERSISTENT, not ~! ################
+	rmdir "$USERHOMEDIR"	&& logger "openslx unmounter: home directory entry (PERSISTENT) deleted." \
+				|| logger "openslx unmounter: could not delete home directory (PERSISTENT) entry - not empty / unmounted!"
+}
+
+postliminaries_vmware()
+{
+	unlink "$USERHOMEDIR"
+	ERR=$?
+	if [ "$ERR" -ne 0 ]; then
+		logger "openslx unmounter: vmware mode: could not unlink ${USERHOMEDIR}!"
+		logger "openslx unmounter: vmware mode: this is a severe problem; I do not know what to do - exiting!"
+		exit 1
+	else
+		logger "openslx unmounter: vmware mode: ${USERHOMEDIR} unlinked."
+		# checking whether there was a directory moved out earlier:
+		[ -d "${USERHOMEDIR}"_mov ] && mv "${USERHOMEDIR}"_mov "${USERHOMEDIR}"
+	fi
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_umounter.inc b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_umounter.inc
new file mode 100644
index 00000000..e161b961
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/includes/50_umounter.inc
@@ -0,0 +1,12 @@
+umount_home() {
+	umount /home/"${LOCALUSER}"/PERSISTENT	&& logger "openslx unmounter: umounted home (PERSISTENT)." \
+						|| logger "openslx unmounter: could not home (PERSISTENT)!"
+}
+
+umount_shares() {
+	index=0
+	for SHARE in $(	mount | grep SHARE | tr -s ' ' | cut -f 3 -d " " ); do
+		umount "${SHARE}"	&& logger "openslx unmounter: umounted ${SHARE}." \
+					|| logger "openslx unmounter: could not umount ${SHARE}!"
+	done
+}
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/mnt_shares b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/mnt_shares
new file mode 100755
index 00000000..0c94f0aa
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/mnt_shares
@@ -0,0 +1,62 @@
+#!/bin/bash
+
+# set -x
+
+logger "openslx sharemapper: Started."
+
+OWNDIR=$(dirname $0)
+for i in "$(dirname $0)"/includes/*.inc; do
+	source "$i"
+done
+
+# Wait for network connection to base system
+#!/bin/bash
+
+x=1
+while ! ping -w 1 -c 1 "${NATADDR}" 2>/dev/null 1>&2; do
+	[ "$x" -gt 20 ] && { logger "openslx sharemapper: could not reach base system. Giving up."; exit 1; } 
+	let x=x+1
+	sleep 2
+done
+
+logger "openslx sharemapper: base system reaching; commencing."
+
+# REMAPMODE (remapMode):		0: None, 1 Native, 2 Native Fallback, 3 vmware
+# CREATEMISSING (createMissingRemap):	0: Nichts tun, 1 xdg-Verzeichnisse
+
+case "$REMAPMODE" in
+	0)	logger "openslx sharemapper: remapMode 0 (do nothing) detected."
+		exit 0
+		;;
+	1)	logger "openslx sharemapper: remapMode 1 (native mode) detected."
+		preliminaries_native
+		get_creds		# fills global var PW with (currently) decrypted password
+		get_shares		# fills array ROHSHARES; row 0 global infos from (shares-)CONFIGFILE,
+					# following rows:	column 1 share path, col 2 drive letter, col 3 share name,
+					# 			column 4 username, col 5 password.
+		mount_shares		# mounts shares given in array ROHSHARES.
+		exit 0
+		;;
+	2)	logger "openslx sharemapper: remapMode 2 (fallback mode) detected."
+		preliminaries_native
+		get_creds		# fills global var PW with (currently) decrypted password
+		get_shares		# fills array ROHSHARES; row 0 global infos from (shares-)CONFIGFILE,
+					# following rows:	column 1 share path, col 2 drive letter, col 3 share name,
+					# 			column 4 username, col 5 password.
+		mount_shares		# mounts shares given in array ROHSHARES.
+		check_fallback		# checks for a mounted home and fallbacks to vmware share, if none found.
+		exit 0
+		;;
+	3)	logger "openslx sharemapper: remapMode 3 (vmware mode) detected."
+		preliminaries_vmware
+		mount_shares		# mounts shares given in array ROHSHARES - runvirt checks whether there's
+					# a home share given or not..
+		exit 0
+		;;
+	*)	logger "openslx sharemapper: unknown remapMode in $SLXCONFIGFILE; doing nothing end exiting with error."
+		exit 1.
+		;;
+esac
+
+exit 0
+
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution
new file mode 100755
index 00000000..24a0594f
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution
@@ -0,0 +1,102 @@
+#!/bin/bash
+
+# Dieses Skript liest die Auflösungsdate HOSTRES.TXT aus der Diskette 2 (/dev/fd1). In dieser 
+# Datei wird die native (maximale) Auflösung des Grundsystems bereitgestellt. fd1 wird vom 
+# openslx-Grundsystem geliefert. Es loggt nach SYSLOG (syslog oder messages).
+# 
+# Zu erledigen: Jede Menge, zB anständiges Trapping, Fehler abfangen usw...
+# set -x
+
+MOUNTDIR=/mnt/diskmount
+RESFILE="${MOUNTDIR}"/openslx.ini
+DISPLAY=:0.0
+
+check_resolution() {
+	# Now, let's wait even more seconds to see if another process re-changes res.:
+	ACTRES=$(xrandr|grep '*'|tr -s " "|cut -f 2 -d " ")
+	if [ "$ACTRES" != "$RESOLUTION" ]; then
+		logger "openslx resolution utility: resolution changed; re-changing."
+		xrandr --output ${AUSGABE} --mode ${RESOLUTION}
+	else
+		logger "openslx resolution utility: resolution unchanged."
+	fi
+}
+
+logger "openslx resolution utility started."
+
+# Da nun fremdgemountet wird, hier sicherheitshalber zur Kontrolle wg. Gross-/Kleinschreibung:
+RESFILE=$(find "${MOUNTDIR}" -iwholename "${RESFILE}")
+
+if [ -f "$RESFILE" ]; then
+	RESOLUTION=$(grep 'resolution=' "$RESFILE" | cut -d '=' -f 2)
+	if [ -z $RESOLUTION ]; then
+		logger "openslx resolution utility: resolution file $RESFILE seems to be empty!"
+		exit 1
+	fi
+	logger "openslx resolution utility: resolution file $RESFILE yields ${RESOLUTION}."
+else
+	logger "openslx resolution utility: resolution file $RESFILE not found!"
+	exit 1
+fi
+
+# Das ist mitunter ein Problem, da die richtige zu finden - Distroabhängig!
+# Hier ein Beispiel für openSuse 13.2, sollte auch für Debian, Ubuntu, Redhat usw. laufen:.
+XAUTHDATEI=$(ps aux | grep -o "X.* \-auth *[^ ]*" | awk '{print $NF}')
+if [ -n "$XAUTHDATEI" ]; then
+	logger "openslx resolution utility: XAUTHFILE found."
+	XAUTHORITY="${XAUTHDATEI}"
+else
+	logger "openslx resolution utility: XAUTHFILE not found. Exiting."
+	exit 1
+fi
+
+# Zu verbessern: Der Name des Verbundenen ist nicht immer bekannt. Daher nehmen wir das
+# erste 'connected' in der Ausgabe xrandrs:
+AUSGABE=$(xrandr -q|grep -m 1 " connected "|awk '{print $1}')
+if [ -z "$AUSGABE" ]; then
+	logger "openslx resolution utility: Could not detect output device. Exiting."
+	exit 1
+fi
+
+# Pruefen, ob xrand eine passende modeline ausgibt:
+if [ "$(xrandr | grep -c ${RESOLUTION})" -eq 0 ]; then
+	logger "openslx resolution utility: xrandr yields no fitting modeline; adding one."
+	MODELINE=$(cvt ${RESOLUTION//x/ } | grep -v "^#" | sed "s/Modeline //g" | sed 's/"//g')
+	xrandr --newmode $(echo ${MODELINE})
+	xrandr --addmode ${AUSGABE} $(echo ${MODELINE} | cut -d " " -f 1)
+	# Dann einzusteuernde Auflösung natürlich auf die neue ändern:
+	RESOLUTION=$(echo ${MODELINE} | cut -d " " -f 1)
+	logger "openslx resolution utility: (xrandr) modeline ${MODELINE} added (${RESOLUTION})."
+fi
+
+# Auflösung per xrandr setzen:
+xrandr --output ${AUSGABE} --mode ${RESOLUTION}
+ERR=$?
+if [ $ERR -ne 0 ]; then
+	logger "openslx resolution utility: xrandr error code ${ERR}."
+else
+	logger "openslx resolution utility: xrandr ok. Mode $RESOLUTION set."
+fi
+
+# Das hier ist ein wenig problematisch, da nach X-Start die gewünschte Desktopumgebung
+# diese gern zuvor gespeicherte Auflösungen wieder einspielt. Daher warten wir einfach,
+# und prüfen in gewissen Zeitabständen, ob sich die Auflösung geändert hat, und spielen
+# im Änderungsfalle die Grundsystemauflösung wieder ein. Schön ist das nicht.
+
+# Now, let's wait some seconds to see if another process re-changes res.:
+sleep 5
+check_resolution
+
+# Now, let's wait some more seconds to see if another process re-changes res.:
+sleep 15
+check_resolution
+
+# Now, let's wait even more seconds to see if another process re-changes res.:
+sleep 20
+check_resolution
+
+# Now, let's wait even more seconds to see if another process re-changes res.:
+sleep 40
+check_resolution
+
+exit 0
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution_standalone b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution_standalone
new file mode 100755
index 00000000..0dbbcf98
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/resolution_standalone
@@ -0,0 +1,138 @@
+#!/bin/bash
+
+# Dieses Skript liest die Auflösungsdate HOSTRES.TXT aus der Diskette 2 (/dev/fd1). In dieser 
+# Datei wird die native (maximale) Auflösung des Grundsystems bereitgestellt. fd1 wird vom 
+# openslx-Grundsystem geliefert. Es loggt nach SYSLOG (syslog oder messages).
+# 
+# Zu erledigen: Jede Menge, zB anständiges Trapping, Fehler abfangen usw...
+# set -x
+
+MOUNTDIR=/tmp/diskmount
+RESFILE="${MOUNTDIR}"/openslx.ini
+DISPLAY=:0.0
+
+function ausgang() {
+	umount "${MOUNTDIR}"
+	rmdir "${MOUNTDIR}"
+}
+
+check_resolution() {
+	# Now, let's wait even more seconds to see if another process re-changes res.:
+	ACTRES=$(xrandr|grep '*'|tr -s " "|cut -f 2 -d " ")
+	if [ "$ACTRES" != "$RESOLUTION" ]; then
+		logger "openslx resolution utility: resolution changed; re-changing."
+		xrandr --output ${AUSGABE} --mode ${RESOLUTION}
+	else
+		logger "openslx resolution utility: resolution unchanged."
+	fi
+}
+
+trap ausgang EXIT SIGHUP SIGINT SIGTERM
+
+logger "openslx resolution utility started."
+
+# Mountpunkt erzeugen:
+if [ ! -d "$MOUNTDIR" ]; then
+	mkdir "$MOUNTDIR"
+	logger "openslx resolution utility: mkdir'ed diskmount dir $MOUNTDIR."
+fi
+
+# Virtuelles Floppylaufwerk mounten
+mount /dev/fd1 "$MOUNTDIR" 2>/dev/null
+ERR=$?
+if [ $ERR -ne 0 ]; then
+	logger "openslx resolution utility: error code $ERR trying to mount /dev/fd1 to ${MOUNTDIR}. Remounting..."
+	mount -o remount /dev/fd1 "$MOUNTDIR" 2>/dev/null
+	ERR=$?
+	if [ $ERR -ne 0 ]; then
+		logger "openslx resolution utility: error code $ERR trying to remount /dev/fd1 to ${MOUNTDIR}. Giving up."
+		exit 1
+	else
+		logger "openslx resolution utility: remount of /dev/fd1 mounted to diskmount dir ${MOUNTDIR} succeeded."
+	fi
+else
+	logger "openslx resolution utility: /dev/fd1 mounted to diskmount dir ${MOUNTDIR}."
+fi
+
+# Das Mounten mit shortname=WIN95 erwies sich als nicht zuverlässig. Daher hier Kontrolle:
+RESFILE=$(find "${MOUNTDIR}" -iwholename "${RESFILE}")
+
+if [ -f "$RESFILE" ]; then
+	RESOLUTION=$(grep 'resolution=' "$RESFILE" | cut -d '=' -f 2)
+	if [ -z $RESOLUTION ]; then
+		logger "openslx resolution utility: resolution file $RESFILE seems to be empty!"
+		exit 1
+	fi
+	logger "openslx resolution utility: resolution file $RESFILE yields ${RESOLUTION}."
+else
+	logger "openslx resolution utility: resolution file $RESFILE not found!"
+	exit 1
+fi
+
+umount /dev/fd1
+ERR=$?
+if [ "$ERR" -ne 0 ]; then
+	logger "openslx resolution utility: error code $ERR trying to to unmount /dev/fd1. Please unmount by hand."
+fi
+
+# Das ist mitunter ein Problem, da die richtige zu finden - Distroabhängig!
+# Hier ein Beispiel für openSuse 13.2, sollte auch für Debian, Ubuntu, Redhat usw. laufen:.
+XAUTHDATEI=$(ps aux | grep -o "X.* \-auth *[^ ]*" | awk '{print $NF}')
+if [ -n "$XAUTHDATEI" ]; then
+	logger "openslx resolution utility: XAUTHFILE found."
+	XAUTHORITY="${XAUTHDATEI}"
+else
+	logger "openslx resolution utility: XAUTHFILE not found. Exiting."
+	exit 1
+fi
+
+# Zu verbessern: Der Name des Verbundenen ist nicht immer bekannt. Daher nehmen wir das
+# erste 'connected' in der Ausgabe xrandrs:
+AUSGABE=$(xrandr -q|grep -m 1 " connected "|awk '{print $1}')
+if [ -z "$AUSGABE" ]; then
+	logger "openslx resolution utility: Could not detect output device."
+	exit 1
+fi
+
+# Pruefen, ob xrand eine passende modeline ausgibt:
+if [ "$(xrandr | grep -c ${RESOLUTION})" -eq 0 ]; then
+	logger "openslx resolution utility: xrandr yields no fitting modeline; adding one."
+	MODELINE=$(cvt ${RESOLUTION//x/ } | grep -v "^#" | sed "s/Modeline //g" | sed 's/"//g')
+	xrandr --newmode $(echo ${MODELINE})
+	xrandr --addmode ${AUSGABE} $(echo ${MODELINE} | cut -d " " -f 1)
+	# Dann einzusteuernde Auflösung natürlich auf die neue ändern:
+	RESOLUTION=$(echo ${MODELINE} | cut -d " " -f 1)
+	logger "openslx resolution utility: (xrandr) modeline ${MODELINE} added (${RESOLUTION})."
+fi
+
+# Auflösung per xrandr setzen:
+xrandr --output ${AUSGABE} --mode ${RESOLUTION}
+ERR=$?
+if [ $ERR -ne 0 ]; then
+	logger "openslx resolution utility: xrandr error code ${ERR}."
+else
+	logger "openslx resolution utility: xrandr ok. Mode $RESOLUTION set."
+fi
+
+# Das hier ist ein wenig problematisch, da nach X-Start die gewünschte Desktopumgebung
+# diese gern zuvor gespeicherte Auflösungen wieder einspielt. Daher warten wir einfach,
+# und prüfen in gewissen Zeitabständen, ob sich die Auflösung geändert hat, und spielen
+# im Änderungsfalle die Grundsystemauflösung wieder ein. Schön ist das nicht.
+
+# Now, let's wait some seconds to see if another process re-changes res.:
+sleep 5
+check_resolution
+
+# Now, let's wait some more seconds to see if another process re-changes res.:
+sleep 15
+check_resolution
+
+# Now, let's wait even more seconds to see if another process re-changes res.:
+sleep 20
+check_resolution
+
+# Now, let's wait even more seconds to see if another process re-changes res.:
+sleep 40
+check_resolution
+
+exit 0
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/umnt_shares b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/umnt_shares
new file mode 100755
index 00000000..b028cf76
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/umnt_shares
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+# set -x
+
+logger "openslx sharemapper: umounter started."
+
+OWNDIR=$(dirname $0)
+for i in "$(dirname $0)"/includes/*.inc; do
+	source "$i"
+done
+
+# REMAPMODE (remapMode):		0: None, 1 Native, 2 Native Fallback, 3 vmware
+# CREATEMISSING (createMissingRemap):	0: Nichts tun, 1 xdg-Verzeichnisse
+
+case "$REMAPMODE" in
+	0)	logger "openslx sharemapper: umounter: remapMode 0 (do nothing) detected."
+		exit 0
+		;;
+	1)	logger "openslx sharemapper: umounter: remapMode 1 (native mode) detected."
+		umount_shares
+		umount_home
+		postliminaries_native
+		;;
+	2)	logger "openslx sharemapper: umounter: remapMode 2 (fallback mode) detected."
+		umount_shares
+		umount_home
+		postliminaries_native
+		exit 0
+		;;
+	3)	logger "openslx sharemapper: umounter: remapMode 3 (vmware mode) detected."
+		postliminaries_vmware
+		exit 0
+		;;
+	*)	logger "openslx sharemapper: umounter: unknown remapMode in $SLXCONFIGFILE; doing nothing end exiting with error."
+		exit 1.
+		;;
+esac
+
+exit 0
+
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_installer b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_installer
new file mode 100755
index 00000000..978cee20
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_installer
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+PS=$(which ps)
+GREP=$(which grep)
+LOGGER=$(which logger)
+MKDIR=$(which mkdir)
+MOUNT=$(which mount)
+MOUNTDIR=/mnt/diskmount/
+SERVICEFILE=openslx-scriptinstall.service
+
+# systemd erkennen
+case $(${PS} --pid 1 -o comm h) in
+	systemd) echo "openslx praeinstaller: systemd detected."
+		if [ -d /etc/systemd/system ]; then
+			SERVICEDIR=/etc/systemd/system/
+		else
+			SERVICEDIR=/usr/lib/systemd/system/
+		fi
+		echo "openslx praeinstaller: installing systemd service file to ${SERVICEDIR}/${SERVICEFILE}."
+
+		cat <<-HEREDOC > "$SERVICEDIR"/"$SERVICEFILE"
+			[Unit]
+			Description=openSLX script installer
+			Before=display-manager.service graphical.target
+			
+			[Service]
+			Type=oneshot
+			ExecStartPre=${MKDIR} -p /mnt/diskmount
+			ExecStartPre=-${MOUNT} /dev/fd1 /mnt/diskmount
+			ExecStart=${LOGGER} "openslx service file: started."
+			ExecStart=${MOUNTDIR}/linux/vm_runtime
+			ExecStart=${LOGGER} "openslx service file: done."
+			RemainAfterExit=no
+		HEREDOC
+
+		[ ! -d /etc/systemd/system/graphical.target.wants ]	&& mkdir /etc/systemd/system/graphical.target.wants 2>/dev/null
+		[ ! -d /etc/systemd/system/basic.target.wants ]		&& mkdir /etc/systemd/system/basic.target.wants 2>/dev/null
+
+		ln -s "${SERVICEDIR}"/"${SERVICEFILE}" /etc/systemd/system/graphical.target.wants/"${SERVICEFILE}"
+		ln -s "${SERVICEDIR}"/"${SERVICEFILE}" /etc/systemd/system/basic.target.wants/"${SERVICEFILE}"
+
+		echo "openslx praeinstaller: doing systemd reload."
+		systemctl daemon-reload
+		;;
+	init)	echo "openslx praeinstaller: init(V) detected."
+		SERVICEDIR=/etc/init.d/
+		[ ! -d "${SERVICEDIR}" ] && { echo "openslx praeinstaller: No init directory $SERVICEDIR found, exiting."; exit 1; }
+		SERVICEFILE=openslx-scriptinstall
+		echo "openslx praeinstaller: installing init service file to ${SERVICEDIR}/${SERVICEFILE}."
+		cat <<-THEREDOC > "${SERVICEDIR}"/"${SERVICEFILE}"
+			#!/bin/sh -e
+			### BEGIN INIT INFO
+			# Provides: openSLX_scriptinstaller
+			# Required-Start: 2 3 4 5
+			# Required-Stop: 0 1 6
+			# Default-Start: 2 3 4 5
+			# Default-Stop: 0 1 6
+			# X-Interactive: false
+			# Short-Description: openSLX script package starter.
+			### END INIT INFO
+			#
+			# Starts via Xsetup patching the openSLX script package
+			# to correct screen resolution and mount network shares
+			# when Xsetup is started.
+			
+			case "\$1" in
+				start)  ${LOGGER} "openslx init file: started."
+					${MKDIR} -p /mnt/diskmount
+				        ${MOUNT} | ${GREP} -q /mnt/diskmount || ${MOUNT} /dev/fd1 /mnt/diskmount
+				        ${MOUNTDIR}/linux/vm_runtime
+					${LOGGER} "openslx init file: done."
+				        ;;
+				stop|restart|force-reload) exit 0 ;;
+				*)      echo "Usage: $0 {start}" >&2; exit 1 ;;
+			esac
+		THEREDOC
+		chmod +x "${SERVICEDIR}"/"${SERVICEFILE}"
+		echo "openslx praeinstaller: enabling ${SERVICEFILE}."
+		update-rc.d "${SERVICEFILE}" defaults
+		;;
+	*)	echo "openslx praeinstaller: Could not determine mother-of-all-processes (not systemd, not init)."
+		echo "openslx praeinstaller: Giving up, exiting."
+		exit 1
+esac
+
+exit 0
+
diff --git a/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_runtime b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_runtime
new file mode 100755
index 00000000..0a81c38d
--- /dev/null
+++ b/core/modules/run-virt/data/opt/openslx/vmchooser/data/linux/vm_runtime
@@ -0,0 +1,97 @@
+#!/bin/bash
+
+# set -x
+
+# logger "openslx vm_runtime: Started."
+
+DISTRIBUTION=$(lsb_release -is | tr '[A-Z]' '[a-z]' | sed -r 's/[^a-z0-9]//g;s/project$//g;s/scientificsl$/scientific/g')
+VERSION=$(lsb_release -rs)
+SCRIPTDIR=/mnt/diskmount/linux/
+RESOLUTIONSCRIPT="${SCRIPTDIR}"/resolution
+SHARESCRIPT="${SCRIPTDIR}"/mnt_shares
+UMOUNTSCRIPT="${SCRIPTDIR}"/umnt_shares
+XSETUP=$(find /etc/X* -name "Xsetup" 2>/dev/null)
+XRESET=$(find /etc/X* -name "Xreset" 2>/dev/null)
+
+[ ! -f "${RESOLUTIONSCRIPT}" -o ! -f "${SHARESCRIPT}" ] && \
+	{ logger "openslx vm_runtime: could not find needed scripts on disk. Exiting." ; exit 1 ; }
+
+write_xsetup() {
+	logger "openslx vm_runtime: writing ${XSETUP}..."
+	cat<<-BISHIER > "${XSETUP}"
+		#!/bin/sh
+		${SHARESCRIPT} &
+		${RESOLUTIONSCRIPT} &
+	BISHIER
+}
+
+patch_xsetup_shebang() {
+	# Patching after first line, to be exact.
+	logger "openslx vm_runtime: patching ${XSETUP} after shebang line, if necessary."
+	grep -q "${RESOLUTIONSCRIPT}" "${XSETUP}"	|| sed "1 a ${RESOLUTIONSCRIPT} \&" -i "${XSETUP}"
+	grep -q "${SHARESCRIPT}" "${XSETUP}"		|| sed "1 a ${SHARESCRIPT} \&" -i "${XSETUP}"
+}
+
+write_xreset() {
+	logger "openslx vm_runtime: writing ${XRESET}..."
+	cat<<-BISHIER > "${XRESET}"
+		#!/bin/sh
+		${UMOUNTSCRIPT} &
+	BISHIER
+}
+
+patch_xreset_shebang() {
+	# Patching after first line, to be exact.
+	logger "openslx vm_runtime: patching ${XRESET} after shebang line, if necessary."
+	grep -q "${UMOUNTSCRIPT}" "${XRESET}"	|| sed "1 a ${UMOUNTSCRIPT} \&" -i "${XRESET}"
+}
+
+case "${DISTRIBUTION}" in
+	opensuse) logger "openslx vm_runtime: openSuse detected."
+		if [ ! -e "${XSETUP}" ]; then
+			XSETUP=/etc/X11/xdm/Xsetup
+			write_xsetup
+		else
+			logger "openslx vm_runtime: patching ${XSETUP}."
+			if ! [ grep -c /etc/sysconfig/displaymanager "$XSETUP" 2>/dev/null 1>&2 ]; then
+				logger "openslx vm_runtime: Xsetup: openSuse marker found, patching."
+				sed "s#/etc/sysconfig/displaymanager#/etc/sysconfig/displaymanager\n"${SHARESCRIPT}" \&\n${RESOLUTIONSCRIPT} \&#g" \
+					-i "${XSETUP}"
+			else
+				logger "openslx vm_runtime: Xsetup: openSuse marker not found, patching after shebang line."
+				xsetup_patch_shebang
+			fi
+			logger "openslx vm_runtime: patching ${RESET}."
+			patch_xreset_shebang
+		fi
+		;;
+	ubuntu)	logger "openslx vm_runtime: Ubuntu detected, version ${VERSION}."
+		# Ubuntu has at least in version 14.04 LTS a bug leading to missing Xsetup/Xreset entries:
+		grep -q "session-setup-script=/etc/X11/Xsetup" /etc/lightdm/lightdm.conf.d/50-myconfig.conf \
+			|| { 	sed "$ a session-setup-script=/etc/X11/Xsetup" -i /etc/lightdm/lightdm.conf.d/50-myconfig.conf
+				logger "openslx vm_runtime: session-setup-script patched into /etc/lightdm/lightdm.conf.d/50-myconfig.conf."; }
+		grep -q "session-reset-script=/etc/X11/Xreset" /etc/lightdm/lightdm.conf.d/50-myconfig.conf \
+			|| {	sed "$ a session-reset-script=/etc/X11/Xreset" -i /etc/lightdm/lightdm.conf.d/50-myconfig.conf
+				logger "openslx vm_runtime: session-reset-script patched into /etc/lightdm/lightdm.conf.d/50-myconfig.conf."; }
+		if [ ! -e "${XSETUP}" ]; then
+			XSETUP=/etc/X11/Xsetup
+			write_xsetup
+		else
+			patch_xsetup_shebang
+		fi
+		if [ ! -e "${XRESET}" ]; then
+			XRESETP=/etc/X11/Xreset
+			write_xreset
+		else
+			patch_xreset_shebang
+		fi
+		;;
+	debian)	logger "openslx vm_runtime: Debian detected."
+		;;
+	*)	logger "openslx vm_runtime: Unknown distribution, exiting."
+		exit 1
+		;;
+esac
+
+exit 0
+
-- 
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