From 0085573cf470dab1d7668c6ea44d395886b1e76f Mon Sep 17 00:00:00 2001
From: Mikael Magnusson <mikma@users.sourceforge.net>
Date: Sun, 25 Feb 2018 23:41:23 +0100
Subject: Download rootfs

---
 build.sh | 36 ++++++++++++++++++++++++++++++------
 1 file changed, 30 insertions(+), 6 deletions(-)

diff --git a/build.sh b/build.sh
index 43b9200..872d568 100755
--- a/build.sh
+++ b/build.sh
@@ -2,17 +2,39 @@
 
 set -e
 
-arch=x86_64
-arch_dash=`echo $arch | tr _ -`
+arch=x86
+subarch=64
+arch_lxd=${arch}_${subarch}
+arch_dash=${arch}-${subarch}
 ver=17.01.4
 image=openwrt
 name=openwrt
 dist=lede
 
-generic_rootfs=${dist}-${ver}-${arch_dash}-generic-rootfs.tar.gz
+generic_rootfs_url=https://downloads.openwrt.org/releases/${ver}/targets/${arch}/${subarch}/${dist}-${ver}-${arch_dash}-generic-rootfs.tar.gz
+generic_rootfs_sum=43886c6b4a555719603286ceb1733ea2386d43b095ab0da9be35816cd2ad8959
+generic_rootfs=dl/$(basename $generic_rootfs_url)
+
 lxc_tar=${dist}-${ver}-${arch_dash}-lxd.tar.gz
 metadata=metadata.yaml
 
+download_rootfs() {
+	test -e dl || mkdir dl
+
+	if ! test -e "$generic_rootfs" ; then
+		echo Downloading $generic_rootfs_url
+		wget -O $generic_rootfs "$generic_rootfs_url"
+	fi
+}
+
+check_rootfs() {
+	sum=$(sha256sum $generic_rootfs| cut -d ' ' -f1)
+	if test $generic_rootfs_sum != $sum; then
+		echo Bad checksum $sum of $generic_rootfs
+		exit 1
+	fi
+}
+
 build_tarball() {
 	fakeroot ./build_rootfs.sh $generic_rootfs $metadata $lxc_tar
 }
@@ -22,11 +44,11 @@ build_metadata() {
 	date=`date -R -d "@${stat}"`
 
 	cat > $metadata <<EOF
-architecture: "$arch"
+architecture: "$arch_lxd"
 creation_date: $(date +%s)
 properties:
- architecture: "$arch"
- description: "OpenWrt $ver $arch ($date)"
+ architecture: "$arch_lxd"
+ description: "OpenWrt $ver $arch_lxd ($date)"
  os: "OpenWrt"
  release: "$ver"
 templates:
@@ -45,6 +67,8 @@ build_image() {
 	lxc image import $lxc_tar --alias $image
 }
 
+download_rootfs
+check_rootfs
 build_metadata
 build_tarball
 build_image
-- 
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