From c47ee6e121ba154adf35b5d02f24180d4ff0ce79 Mon Sep 17 00:00:00 2001
From: Ian Wienand <iwienand@redhat.com>
Date: Mon, 15 Oct 2018 16:00:18 +1100
Subject: [PATCH] ubuntu: Add options to ignore mirror components and use
 insecure repos

When using the upstream cloud images with the "ubuntu" element, they
have universe and multiverse enabled which we don't mirror.

To use the infra mirrors as a DIB_DISTRIBUTION_MIRROR with this
element, we need to be able to skip redirecting to universe and
multiverse, and additionally enable insecure repos (as we don't gpg
sign our mirrors).

Add and document two new variables with the ubuntu element to do this.
This is then setup by the openstack-ci-mirrors element so that we use
local mirrors duing dib functional testing for the "ubuntu" element.

Change-Id: I6ffbde07fa0e103641ee5c5f9d9e854e5b2168dc
---
 .../11-dib-distribution-mirror.bash           |  8 +++++--
 diskimage_builder/elements/ubuntu/README.rst  | 10 +++++++++
 .../ubuntu/pre-install.d/01-set-ubuntu-mirror | 22 ++++++++++++++++---
 3 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/diskimage_builder/elements/openstack-ci-mirrors/environment.d/11-dib-distribution-mirror.bash b/diskimage_builder/elements/openstack-ci-mirrors/environment.d/11-dib-distribution-mirror.bash
index d0b37611..1d94de7b 100644
--- a/diskimage_builder/elements/openstack-ci-mirrors/environment.d/11-dib-distribution-mirror.bash
+++ b/diskimage_builder/elements/openstack-ci-mirrors/environment.d/11-dib-distribution-mirror.bash
@@ -27,8 +27,12 @@ if [ -f /etc/ci/mirror_info.sh ]; then
 
 fi
 
-# This is repo files pre-created for the fedora/centos-minimal jobs in
-# the gate
+# Infra doesn't mirror non-free repos, so instruct to ignore these
+export DIB_DISTRIBUTION_MIRROR_UBUNTU_IGNORE="(universe|multiverse)"
+export DIB_DISTRIBUTION_MIRROR_UBUNTU_INSECURE=1
+
+# These repo files are pre-created for the fedora/centos-minimal jobs
+# in the gate.  Not relevant inside the chroot.
 if [[ -d ${WORKSPACE:-/not/a/path/}/dib-mirror ]]; then
 
     if [[ "${DISTRO_NAME}" == "fedora" ]]; then
diff --git a/diskimage_builder/elements/ubuntu/README.rst b/diskimage_builder/elements/ubuntu/README.rst
index 9422273f..ad8af102 100644
--- a/diskimage_builder/elements/ubuntu/README.rst
+++ b/diskimage_builder/elements/ubuntu/README.rst
@@ -11,5 +11,15 @@ Overrides:
  * To download a non-default release of Ubuntu cloud images, use the
    environment variable ``DIB_RELEASE``. This element will export the
    ``DIB_RELEASE`` variable.
+ * Use ``DIB_DISTRIBUTION_MIRROR`` to override the ``sources.list``
+   with an alternative mirror
+ * Setting ``DIB_DISTRIBUTION_MIRROR_UBUNTU_IGNORE`` to an
+   extended-regexp (i.e. the argument to the ``=~`` bash comparitor)
+   which, when matched, will *not* set that line to the
+   ``DIB_DISTRIBUTION_MIRROR``.  For example, if your local mirror
+   does not mirror the universe and multiverse components, set this to
+   ``(universe|multiverse)``
+ * Setting ``DIB_DISTRIBUTION_MIRROR_UBUNTU_INSECURE`` updates apt
+   settings to allow insecure/unuthenticated repositories.
 
 .. element_deps::
diff --git a/diskimage_builder/elements/ubuntu/pre-install.d/01-set-ubuntu-mirror b/diskimage_builder/elements/ubuntu/pre-install.d/01-set-ubuntu-mirror
index cc07297b..71be18f9 100755
--- a/diskimage_builder/elements/ubuntu/pre-install.d/01-set-ubuntu-mirror
+++ b/diskimage_builder/elements/ubuntu/pre-install.d/01-set-ubuntu-mirror
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
+if [ ${DIB_DEBUG_TRACE:-0} -gt 1 ]; then
     set -x
 fi
 set -eu
@@ -10,5 +10,21 @@ DIB_DISTRIBUTION_MIRROR=${DIB_DISTRIBUTION_MIRROR:-}
 
 [ -n "$DIB_DISTRIBUTION_MIRROR" ] || exit 0
 
-sudo sed -ie "s&http://\(archive\|security\).ubuntu.com/ubuntu&$DIB_DISTRIBUTION_MIRROR&" \
-    /etc/apt/sources.list
+while IFS= read line
+do
+    if [[ "$line" =~ "${DIB_DISTRIBUTION_MIRROR_UBUNTU_IGNORE:-}" ]]; then
+        # append line unmodified
+        echo "$line" | tee --append /etc/apt/sources.list.new
+    else
+        echo "$line" | \
+            sed -e "s&http://\(archive\|security\).ubuntu.com/ubuntu&$DIB_DISTRIBUTION_MIRROR&" | \
+            tee --append /etc/apt/sources.list.new
+    fi
+done < /etc/apt/sources.list
+
+if [[ -n "${DIB_DISTRIBUTION_MIRROR_UBUNTU_INSECURE:-}" ]]; then
+    echo "APT::Get::AllowUnauthenticated \"true\";" | tee /etc/apt/apt.conf.d/95allow-unauthenticated
+    echo "Acquire::AllowInsecureRepositories \"true\";" | tee -a /etc/apt/apt.conf.d/95allow-unauthenticated
+fi
+
+mv /etc/apt/sources.list.new /etc/apt/sources.list