From 078c056e6d114a36c13e2d341242886f9ab6ea61 Mon Sep 17 00:00:00 2001
From: Christian Rößler
Date: Mon, 5 Aug 2013 17:32:58 +0200
Subject: [openslx-update] Added update for scripts openslx-install,
 openslx-update, new version detection by md5, incl. check for md5 after
 download to detect transport errors, disk full etc.

---
 data/openslx-update | 53 +++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 8 deletions(-)

(limited to 'data')

diff --git a/data/openslx-update b/data/openslx-update
index c7e24d30..9eecf749 100755
--- a/data/openslx-update
+++ b/data/openslx-update
@@ -17,7 +17,7 @@ function warning ()
 {
 	echo -e "\033[01;33m$@\033[00m"
 }
-
+ 
 ### Variablen ###################################
 # Web
 MIRROR="http://mltk.boot.openslx.org"
@@ -28,12 +28,16 @@ PXECONFIG="$PXEDIR/default"
 PXETEMPLATE="/opt/openslx/templates/pxemenu-header"
 FILEPRAEFIX="openslx-"
 WWWDIR="/srv/openslx/www"
+SLXSCRIPTS="openslx-install openslx-update"
+SCRIPTPATH=$(dirname "$0")
+SCRIPTBACKUPDIR=/root/backup
 # Konfigurationsdateien
 SERVERDEFAULTS="/opt/openslx/server-defaults"
 # Temporäres
 REMOTEINDEX="/tmp/mlversion"
 LOCALINDEX="/opt/openslx/local_version"
 WWWTEMP="/srv/openslx/www-temp"
+DLFLAG=0		# if something was downloaded
 # Vars zum Überladen
 LOCAL_STABLE=0
 LOCAL_TESTING=0
@@ -42,6 +46,8 @@ CRCCOMMAND=md5sum
 CRCEXTENSION=md5
 # Mindestens freier Plattenplatz in Kilobytes
 MINSPACE=409600		# 400MB
+# Allgemein
+DATUM=$(date +%Y%m%d)
 
 trap "{ rm -f $REMOTEINDEX $WWWTEMP/* $WWWDIR/*.$CRCEXTENSION; }" SIGINT SIGTERM EXIT
 
@@ -67,6 +73,7 @@ cp "$PXETEMPLATE" "$PXECONFIG"
 ERR=$?; [ $ERR -ne 0 ] && error "Kann PXE-Vorlage nicht umkopieren!"
 
 mkdir -p "$WWWTEMP"
+print "Kopiere bestehende Dateien sicherheitshalber um..."
 cp -p "$WWWDIR/$FILEPRAEFIX"* "$WWWTEMP/"
 ERR=$?; [ $ERR -ne 0 ] && error "Kann bestehende Dateien nicht nach $WWWTEMP kopieren!"
 
@@ -92,7 +99,7 @@ for REL in ${!AVAILABLE_*}; do
 			continue
 		fi
 		# Download
-		wget -O "$WWWTEMP/$FILEPRAEFIX$FILE" "$MIRROR/$MIRRORDIR/$FILE" || { warning "Could not download $FILE"; continue; }
+		wget -O "$WWWTEMP/$FILEPRAEFIX$FILE" "$MIRROR/$MIRRORDIR/$FILE" && DLFLAG=1 || { warning "Could not download $FILE"; continue; }
 		# Download md5 value
 		wget -O "$WWWTEMP/$FILEPRAEFIX$FILE.$CRCEXTENSION" "$MIRROR/$MIRRORDIR/$FILE.$CRCEXTENSION" \
 			|| { warning "Could not download $FILE.$CRCEXTENSION!"; continue; }
@@ -133,10 +140,40 @@ done
 # If we are here, then we can assume everything went either right, or at least no fatal error happened.
 # So, we will move the stuff in $WWWTEMP to $WWWDIR.
 
-print "Alles scheint ok - Bewege neue Abbilder zum Webserver."
-mv "$WWWTEMP/"* "$WWWDIR/"
-print "Done."
-# print "Old files left over:"
-# ls -alh "$WWWTEMP"
+if [ "$DLFLAG" -ne 0 ]; then
+	print "Alles scheint ok - Bewege neue Abbilder zum Webserver."
+	mv "$WWWTEMP/"* "$WWWDIR/"
+	print "Neue Abbilder bewegt."
+else
+	print "Keine Abbilder heruntergeladen - leere temporäres Verzeichnis $WWWTEMP."
+	rm -f "$WWWTEMP/"*
+fi
 
-exit 0
+# Update Scripts openslx-install and openslx-update, if possible.
+if [ ! -d "$SCRIPTBACKUPDIR" ]; then
+	print "Erzeuge Sicherungsverzeichnis für Skripte $SCRIPTBACKUPDIR"
+	mkdir -p "$SCRIPTBACKUPDIR" || error "Kann Sicherungsverzeichnis für Skripte nicht erstellen!"
+fi
+ 
+for FILE in openslx-update openslx-install; do
+	wget -O "$WWWTEMP/$FILE.$CRCEXTENSION" "$MIRROR/$MIRRORDIR/$FILE.$CRCEXTENSION"
+	CRCVALNEW=$(cat "$WWWTEMP/$FILE.$CRCEXTENSION"|cut -f 1 -d " ")
+	CRCVALOLD=$($CRCCOMMAND "$SCRIPTPATH/$FILE"|cut -f 1 -d " ")
+	if [ "$CRCVALNEW" == "$CRCVALOLD" ]; then
+		print "$SCRIPTPATH/$FILE  - kein Update notwendig."
+		continue
+	else
+		wget -O "$WWWTEMP/$FILE" "$MIRROR/$MIRRORDIR/$FILE"
+		if [ $($CRCCOMMAND "$WWWTEMP/$FILE"|cut -f 1 -d " ") != "$CRCVALNEW" ]; then
+			warning "$SCRIPTPATH/$FILE konnte nicht upgedatet werden ($CRCEXTENSION-Fehler)!"
+			continue
+		else
+			print "$SCRIPTPATH/$FILE wird upgedatet - $CRCEXTENSION ok."
+			print "Alte Version $SCRIPTPATH/$FILE gesichert nach: $SCRIPTBACKUPDIR/$FILE.$DATUM."			
+			mv "$SCRIPTPATH/$FILE" "$SCRIPTBACKUPDIR/$FILE.$DATUM"
+			chmod u+x "$WWWTEMP/$FILE"		# sonst wg. wget keine exec-bit
+			mv "$WWWTEMP/$FILE" "$SCRIPTPATH"
+		fi
+	fi
+done
+exit 0 
-- 
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