From 67d628b22a37274cdee0342690aff56bfd3d44a9 Mon Sep 17 00:00:00 2001
From: Daniel J Walsh <dwalsh@redhat.com>
Date: Fri, 12 Jul 2019 14:44:41 -0400
Subject: [PATCH] Initial Version

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
---
 BuildSourceImage.sh | 70 +++++++++++++++++++++++++++++++++++++++++++++
 README.md           |  7 +++++
 2 files changed, 77 insertions(+)
 create mode 100755 BuildSourceImage.sh

diff --git a/BuildSourceImage.sh b/BuildSourceImage.sh
new file mode 100755
index 0000000..4d026cf
--- /dev/null
+++ b/BuildSourceImage.sh
@@ -0,0 +1,70 @@
+#!/bin/sh
+# This script requires an OCI IMAGE Name to pull.
+# The script generates a SOURCE Image based on the OCI Image
+# Script must be executed on the same OS or newer as the image.
+IMAGE=$1
+SRC_RPM_DIR=SRCRPMS
+SRC_IMAGE=$1-src
+CONTEXT_DIR=$2
+EXTRA_SRC_DIR=$3
+IMAGE_CTR=$(buildah from ${IMAGE})
+IMAGE_MNT=$(buildah mount ${IMAGE_CTR})
+SRC_CTR=$(buildah from scratch)
+SRC_MNT=$(buildah mount ${SRC_CTR})
+#
+# From the executable image, get the RELEASEVER of the image
+# 
+RELEASE=$(rpm -q --queryformat "%{VERSION}\n" --root $IMAGE_MNT -f /etc/os-release)
+#
+# From the executable image, list the SRC RPMS used to build the image
+# 
+SRC_RPMS=$(rpm -qa --root ${IMAGE_MNT} --queryformat '%{SOURCERPM}\n' | grep -v '(none)' | sort -u)
+
+#
+# Create directory in source container image for RPMS
+#
+mkdir -p ${SRC_RPM_DIR} ${SRC_MNT}/RPMS
+#
+# For each SRC_RPMS used to build the executable image, download the SRC RPM
+# and generate a layer in the SRC RPM.
+# 
+(cd ${SRC_RPM_DIR};
+set -x
+for i in ${SRC_RPMS}; do
+    if [ ! -f $i ]; then
+         RPM=$(echo $i | sed 's/.src.rpm$//g')
+         dnf download --release $RELEASE --source $RPM || continue
+    fi
+    cp $i $SRC_MNT/RPMS
+    buildah commit $SRC_CTR $i
+done
+)
+#
+# If the caller specified a context directory,
+# add it to the CONTEXT DIR in SRC IMAGE
+#
+if [ ! -z "${CONTEXT_DIR}" ]; then
+    cp -R ${CONTEXT_DIR} ${SRC_MNT}/CONTEXT
+    buildah commit $SRC_CTR $1_$(echo $(CONTEXT_DIR) | sed 's|/|_|g')
+fi
+
+#
+# If the caller specified a extra directory,
+# add it to the CONTEXT DIR in SRC IMAGE
+#
+if [ ! -z "${EXTRA_SRC_DIR}" ]; then
+    cp -R ${EXTRA_SRC_DIR} ${SRC_MNT}/EXTRA
+    buildah commit $SRC_CTR $1_$(echo $(EXTRA_SRC_DIR) | sed 's|/|_|g')
+fi
+
+#
+# Commit the SRC_CTR TO a SRC_IMAGE
+#
+buildah commit $SRC_CTR $SRC_IMAGE
+
+# Push SRC_IMAGE to Registry
+# buildah push $SRC_IMAGE REGISTRY_NAME/$SRC_IMAGE
+
+# Cleanup and remove containers
+buildah umount ${SRC_CTR} ${IMAGE_CTR}
+buildah rm ${SRC_CTR} ${IMAGE_CTR}
diff --git a/README.md b/README.md
index 86080ca..14d0dbd 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,9 @@
 # BuildSourceImage
 Tool to build a source image based on an existing OCI image
+
+
+This script uses BUILDAH to build source code container images based on
+existing OCI images.
+
+The goal is to make retrieving the source code used to make a container image
+easier for users to obtain, using the standard OCI protocols and image formats.