1 files changed, 91 insertions, 0 deletions
diff --git a/app-emulation/vmware-workstation/files/helpers/unbundler.sh b/app-emulation/vmware-workstation/files/helpers/unbundler.sh
new file mode 100755
index 000000000000..b19b587c2af5
--- /dev/null
+++ b/app-emulation/vmware-workstation/files/helpers/unbundler.sh
@@ -0,0 +1,91 @@
+#!/bin/bash
+
+ORIGFILE="$1"
+
+is_relative() {
+    local path="$1"
+    shift
+
+    [ "${path:0:1}" != "/" ]
+    return
+}
+
+set_offsets() {
+	# This won't work with non-GNU stat.
+	FILE_SIZE=`stat -L --format "%s" "$1"`
+	local offset=$(($FILE_SIZE - 4))
+	
+	MAGIC_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	CHECKSUM_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	VERSION_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	PREPAYLOAD_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	PREPAYLOAD_SIZE_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	LAUNCHER_SIZE_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	PAYLOAD_OFFSET=$offset
+	offset=$(($offset - 4))
+	
+	PAYLOAD_SIZE_OFFSET=$offset
+	offset=$(($offset - 4))
+}
+
+set_lengths() {
+   local file="$1"
+   if [ ! -s "$file" ]; then
+      echo "$file does not exist"
+      exit 1
+   fi
+
+   # XXX: put extraction in its own function
+   MAGIC_NUMBER=`od -An -t u4 -N 4 -j $MAGIC_OFFSET "$file" | tr -d ' '`
+
+   if [ "$MAGIC_NUMBER" != "907380241" ]; then
+      echo "magic number does not match"
+      exit 1
+   fi
+
+   LAUNCHER_SIZE=`od -An -t u4 -N 4 -j $LAUNCHER_SIZE_OFFSET "$file" | tr -d ' '`
+   PAYLOAD_SIZE=`od -An -t u4 -N 4 -j $PAYLOAD_SIZE_OFFSET "$file" | tr -d ' '`
+   PREPAYLOAD_SIZE=`od -An -t u4 -N 4 -j $PREPAYLOAD_SIZE_OFFSET "$file" | tr -d ' '`
+
+   SKIP_BYTES=$(($PREPAYLOAD_SIZE + $LAUNCHER_SIZE))
+
+   return 0
+}
+
+if is_relative "${ORIGFILE}"; then
+	ORIGFILE="`pwd`/${ORIGFILE}"
+fi
+
+
+set_offsets ${ORIGFILE}
+set_lengths ${ORIGFILE}
+
+echo "Unbundling" ${ORIGFILE}
+
+PREPAYLOAD="prepayload"
+PAYLOAD="payload"
+
+# Unpack the pre-payload file
+mkdir ${PREPAYLOAD}
+cd ${PREPAYLOAD}
+dd if="${ORIGFILE}" ibs=$LAUNCHER_SIZE obs=1024 skip=1 | tar -xzf - 2> /dev/null
+cd ..
+
+# Unpack the main file
+mkdir ${PAYLOAD}
+cd ${PAYLOAD}
+dd if="${ORIGFILE}" ibs=$SKIP_BYTES obs=1024 skip=1 | tar -xzf - 2> /dev/null
+cd ..
+