From 1c497aef76affd8d2b37f7341b0f33dd6e5aab3f Mon Sep 17 00:00:00 2001
From: Christian Rößler
Date: Thu, 25 Jul 2013 16:35:23 +0200
Subject: [demo-server] Added hash check (md5) for downloaded files (not for
 unused STABLE_EXTRA so far). Added two internal vars for CRCCOMMAND (md5sum)
 and CRCEXTENSION (md5) for easy hash algorithm change. If no hash file
 available script will continue; hash mismatch terminates script.

---
 data/openslx-update | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'data')

diff --git a/data/openslx-update b/data/openslx-update
index 06d05554..e4d271f5 100755
--- a/data/openslx-update
+++ b/data/openslx-update
@@ -21,6 +21,8 @@ REMOTEINDEX="/tmp/mlversion"
 LOCALINDEX="/opt/openslx/local_version"
 WWWTEMP="/srv/openslx/www-temp"
 PXECONFIG="/srv/openslx/tftp/pxelinux.cfg/default"
+CRCCOMMAND=md5sum
+CRCEXTENSION=md5
 
 . "/opt/openslx/server-defaults" || error "Konnte Serverkonfiguration nicht laden. Wurde openslx-install ausgeführt?"
 
@@ -65,7 +67,18 @@ for REL in ${!AVAILABLE_*}; do
 			continue
 		fi
 		# Download
-		wget -O "/srv/openslx/www/openslx-$FILE" "$MIRROR/files/$FILE" || warning "Could not download $FILE"
+		wget -O "/srv/openslx/www/openslx-$FILE" "$MIRROR/files/$FILE" || { warning "Could not download $FILE"; continue; }
+		# Download md5 value
+		wget -O "/srv/openslx/www/openslx-$FILE.$CRCEXTENSION" "$MIRROR/files/$FILE.$CRCEXTENSION" \
+			|| { warning "Could not download $FILE.$CRCEXTENSION!"; continue; }
+		# check file checksums
+		if [ $($CRCCOMMAND "/srv/openslx/www/openslx-$FILE"|cut -f 1 -d " ") != "$(cat /srv/openslx/www/openslx-$FILE.$CRCEXTENSION)" ]; then
+			warning "$CRCCOMMAND: $FILE: checksum mismatch! Transmission error or disk full."
+			warning "$CRCCOMMAND: $FILE: Prüfsummendiskrepanz! Übertragungsfehler oder Laufwerk voll."
+			error "Beende Skript aufgrund Prüfsummendiskrepanz!"
+		else
+			print "Prüsummencheck Datei $FILE ok."
+		fi
 	done
 	if [ -z "$PXELINE" -o -z "$KERNEL" ]; then
 		warning "Incomplete entry. KERNEL or INITRD missing."
-- 
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