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)

---
 .../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 ++++
 10 files changed, 270 insertions(+)
 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

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

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
+}
-- 
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