#1062 Support tiptorrent image transfer mode

Add support for tiptorrent image transfer mode to client's bash scripts
(aka cloning engine). If desired, clients receive images to restore with
the new unicast transfer mode tiptorrent.

See also: http://git.soleta.eu/tiptorrent/

#1062 Add tiptorrent support to WebConsole

Add tiptorrent option to WebConsole restore image form.

#1062 Launch tiptorrent on oglive init

This commit adds tiptorrent launch to oglive init process. Clients
launch tiptorrent daemon if they have cache partition.

#1062 Fix minor tiptorrent integration bugs

* Fix md5sum pipe typo
* Use correct variable for checksum download

#1062 Calculate checksum on image creation

Otherwise, OpenGnsys depends on cron and bittorrent specific scripts to
obtain images checksums.

Support cache cleaning for tiptorrent image parts

Tiptorrent downloads and saves images to the cache in parts. With this
commit, WebConsole shows and deletes all parts as one.

#1062 Rename TIPTORRENT-CACHE in restore image form

This commit changes TIPTORRENT for TIPTORRENT-CACHE to keep naming
consistency.

#1062 tiptorrent stores whole file instead of chunks

Tiptorrent now stores the whole file instead of the split chunks.
Removes any chunk related code from cloning engine scripts.

Requires newer version of tiptorrent installed
(tiptorrent-static >= 1.0.0-6).

Always compute MD5 of cached image

Do not rely on MD5 checksum file from the cache on tiptorrent transfers.
Otherwise, cloning engine could restore a corrupted image.

#1062 Check tiptorrent exit code

Otherwise, the image restoration continues in failed downloads.

1 files changed, 84 insertions, 8 deletions

diff --git a/client/engine/Image.lib b/client/engine/Image.lib
index 941deb91..728eb24a 100755
--- a/client/engine/Image.lib
+++ b/client/engine/Image.lib
@@ -102,6 +102,48 @@ esac
 [ -n "$PARAM1" ] && echo "$PARAM1 $PARAM2 $PARAM3 $IMGFILE"
 }
 
+function ogTiptorrentGet ()
+{
+local MAXTRIES err
+i=0
+MAXTRIES=3
+while [ "$i" -lt $MAXTRIES ]
+do
+    wget --spider -q "$ogrepo:9999/$1" && break
+    i=$(( i + 1 ))
+done
+if [ $i -eq 3 ]; then
+    ogRaiseError "$OG_ERR_NOTFOUND" "Error checking $1"
+    return $?
+fi
+pushd /opt/opengnsys/cache/opt/opengnsys/images > /dev/null || return 1
+/opt/opengnsys/bin/tiptorrent-client "$ogrepo" "$1" > /dev/null
+err=$?
+popd > /dev/null || return 1
+if [ $err -ne 0 ]; then
+    ogRaiseError "$OG_ERR_NOTFOUND" "Error downloading $1 image, tiptorrent-client failed. See /var/log/syslog on the client for details."
+fi
+return $err
+}
+
+function ogTiptorrentGetToCache ()
+{
+local MAXTRIES MD5FILE MD5IMG
+if ! wget -qO "$1".full.sum "$ogrepo:9999/$2.full.sum"; then
+    ogRaiseError "$OG_ERR_NOTFOUND" "Error downloading $2 checksum"
+    return $?
+fi
+MD5FILE=$(cat "$1".full.sum)
+if ! ogTiptorrentGet "$2"; then
+    return 1;
+fi
+MD5IMG=$(md5sum "$IMGPATH" | cut -f1 -d " ")
+if [ "$MD5IMG" != "$MD5FILE" ]; then
+    ogRaiseError "$OG_ERR_NOTFOUND" "Error downloading $2, checksum mismatch"
+    return $?
+fi
+return 0
+}
 
 #/**
 #         ogRestoreImageSyntax path_filename path_device [str_tools] [str_compressionlevel]
@@ -121,7 +163,8 @@ esac
 #*/ ##
 function ogRestoreImageSyntax ()
 {
-local TOOL COMPRESSOR LEVEL PART IMGFILE FILEHEAD INFOIMG
+local TOOL COMPRESSOR LEVEL PART IMGFILE FILEHEAD INFOIMG IMGPATH IMGCACHEDIR
+local MD5FILE MD5WGET
 
 
 # Si se solicita, mostrar ayuda.
@@ -131,8 +174,8 @@ if [ "$*" == "help" ]; then
     return
 fi
 
-# Error si no se reciben entre 2 y 4 parámetros.
-[ $# -ge 2 -a $# -le 4 ] || ogRaiseError $OG_ERR_FORMAT "$*" || return $?
+# Error si no se reciben entre 2 y 5 parámetros.
+[ $# -ge 2 -a $# -le 5 ] || ogRaiseError $OG_ERR_FORMAT "$*" || return $?
 
 # controlamos que el parametro 1 (imagen) es tipo file.
 [ -f $1 ] || ogRaiseError $OG_ERR_NOTFOUND "$1" || return $?
@@ -147,9 +190,8 @@ if [ "$#" -eq 2 ]; then
 	ogRestoreImageSyntax $IMGFILE $PART $TOOL $COMPRESSOR
 fi
 
-
 # Si cuatro parametros genera sintaxis
-if [ "$#" -eq 4 ]; then
+if [ "$#" -eq 4 ] || [ "$#" -eq 5 ]; then
 	IMGFILE=$1
 	PART=$2 
 	# comprobamos parametro herramienta compresion.
@@ -198,7 +240,35 @@ if [ "$#" -eq 4 ]; then
     	;;
 	esac
 
-	echo "$COMPRESSOR $IMGFILE $MBUFFER $TOOL"
+    if [ "$5" == "true" ]; then
+        IMGFILE=${1/\/opt\/opengnsys\/images\//}
+        if ogFindCache &>/dev/null; then
+            IMGCACHEDIR=$(ogGetMountPoint $(ogFindCache))/opt/opengnsys/images
+            IMGPATH="$IMGCACHEDIR/$IMGFILE"
+            if [ -f "$IMGPATH" ]; then
+                MD5FILE=$(md5sum "$IMGPATH" | cut -f1 -d " ")
+                MD5WGET=$(wget -qO - "$ogrepo:9999/$IMGFILE.full.sum")
+                if [ "$MD5FILE" != "$MD5WGET" ]; then
+                    ogTiptorrentGetToCache "$IMGPATH" "$IMGFILE"
+                fi
+            else
+                mkdir -p "$IMGCACHEDIR"
+                ogTiptorrentGetToCache "$IMGPATH" "$IMGFILE"
+            fi
+            if [ $? -ne 0 ]; then
+                ogRaiseError "$OG_ERR_NOTFOUND" "Failed tiptorrent to cache $TOOL"
+                return $?
+            fi
+            CAT="cat $IMGPATH |"
+            COMPRESSOR="$COMPRESSOR -"
+            echo "$CAT $COMPRESSOR $MBUFFER $TOOL"
+        else
+            ogRaiseError "$OG_ERR_NOTFOUND" "Tiptorrent needs cache $TOOL"
+            return $?
+        fi
+    else
+        echo "$COMPRESSOR $IMGFILE $MBUFFER $TOOL"
+    fi
 fi
 
 }
@@ -363,6 +433,7 @@ ERRCODE=$?
 if [ $ERRCODE == 0 ]; then
     echo "$(ogGetImageInfo $IMGFILE):$(ogGetHostname)" > $IMGFILE.info
     cp -f $IMGFILE.info /tmp/image.info
+    md5sum "$IMGFILE" | cut -f1 -d " " > "$IMGFILE".full.sum
 else
     ogRaiseError $OG_ERR_IMAGE "$1 $2 $IMGFILE"
     rm -f "$IMGFILE"
@@ -746,7 +817,7 @@ if [ "$*" == "help" ]; then
     return
 fi
 # Error si no se reciben 4 parámetros.
-[ $# == 4 ] || ogRaiseError $OG_ERR_FORMAT || return $?
+[ $# == 4 ] || [ $# == 5 ] || ogRaiseError $OG_ERR_FORMAT || return $?
 # Procesar parámetros.
 PART="$(ogDiskToDev $3 $4)" || return $(ogRaiseError $OG_ERR_NOTFOUND " $3 $4"; echo $?)
 #IMGTYPE=$(ogGetImageType "$1" "$2")
@@ -779,7 +850,12 @@ fi
 # Solicitamos la generación de la instruccion a ejecutar
 # Atención: no se comprueba el tipo de sistema de archivos.
 # Atención: no se comprueba incongruencia entre partición e imagen.
-PROGRAM=`ogRestoreImageSyntax  $IMGFILE $PART`
+INFOIMG=$(ogGetImageInfo $IMGFILE) || ogRaiseError $OG_ERR_NOTFOUND "No Image $1" || return $?
+TOOL=`echo $INFOIMG | cut -f1 -d:`
+COMPRESSOR=`echo $INFOIMG | cut -f2 -d:`
+PROGRAM=`ogRestoreImageSyntax $IMGFILE $PART $TOOL $COMPRESSOR $5`
+echo PROGRAMA
+echo "$PROGRAM"
 
 # Desmontar y bloquear partición.
 ogUnmount $3 $4 2>/dev/null || return $(ogRaiseError $OG_ERR_PARTITION " $3 $4"; echo $?)