This bug was fixed in the package cloud-init -
0.7.8-1-g3705bb5-0ubuntu1~16.04.1

---------------
cloud-init (0.7.8-1-g3705bb5-0ubuntu1~16.04.1) xenial-proposed; urgency=medium

  * New upstream release 0.7.8.
  * New upstream snapshot.
    - systemd: put cloud-init.target After multi-user.target (LP: #1623868)

cloud-init (0.7.7-31-g65ace7b-0ubuntu1~16.04.2) xenial-proposed;
urgency=medium

  * debian/control: add Breaks of older versions of walinuxagent (LP:
#1623570)

cloud-init (0.7.7-31-g65ace7b-0ubuntu1~16.04.1) xenial-proposed;
urgency=medium

  * debian/control: fix missing dependency on python3-serial,
    and make SmartOS datasource work.
  * debian/cloud-init.templates fix capitalisation in template so
    dpkg-reconfigure works to select OpenStack. (LP: #1575727)
  * d/README.source, d/control, d/new-upstream-snapshot, d/rules: sync
    with yakkety for changes due to move to git.
  * d/rules: change PYVER=python3 to PYVER=3 to adjust to upstream change.
  * debian/rules, debian/cloud-init.install: remove install file
    to ensure expected files are collected into cloud-init deb.
    (LP: #1615745)
  * debian/dirs: remove obsolete / unused file.
  * upstream move from bzr to git.
  * New upstream snapshot.
    - Allow link type of null in network_data.json [Jon Grimm] (LP: #1621968)
    - DataSourceOVF: fix user-data as base64 with python3 (LP: #1619394)
    - remove obsolete .bzrignore
    - systemd: Better support package and upgrade. (LP: #1576692, #1621336)
    - tests: cleanup tempdirs in apt_source tests
    - apt config conversion: treat empty string as not provided. (LP: #1621180)
    - Fix typo in default keys for phone_home [Roland Sommer] (LP: #1607810)
    - salt minion: update default pki directory for newer salt minion.
      (LP: #1609899)
    - bddeb: add --release flag to specify the release in changelog.
    - apt-config: allow both old and new format to be present.
      [Christian Ehrhardt] (LP: #1616831)
    - python2.6: fix dict comprehension usage in _lsb_release. [Joshua Harlow]
    - Add a module that can configure spacewalk. [Joshua Harlow]
    - add install option for openrc [Matthew Thode]
    - Generate a dummy bond name for OpenStack (LP: #1605749)
    - network: fix get_interface_mac for bond slave, read_sys_net for ENOTDIR
    - azure dhclient-hook cleanups
    - Minor cleanups to atomic_helper and add unit tests.
    - Fix Gentoo net config generation [Matthew Thode]
    - distros: fix get_primary_arch method use of os.uname [Andrew Jorgensen]
    - Apt: add new apt configuration format [Christian Ehrhardt]
    - Get Azure endpoint server from DHCP client [Brent Baude]
    - DigitalOcean: use the v1.json endpoint [Ben Howard]
    - MAAS: add vendor-data support (LP: #1612313)
    - Upgrade to a configobj package new enough to work [Joshua Harlow]
    - ConfigDrive: recognize 'tap' as a link type. (LP: #1610784)
    - NoCloud: fix bug providing network-interfaces via meta-data.
      (LP: 1577982)
    - Add distro tags on config modules that should have it [Joshua Harlow]
    - ChangeLog: update changelog for previous commit.
    - add ntp config module [Ryan Harper]
    - SmartOS: more improvements for network configuration
    - tools/read-version: update to address change in version
    - make-tarball: older versions of git with --format=tar.
    - read-version: do not attempt git-describe if no git.
    - Newer requests have strong type validation [Joshua Harlow]
    - For upstream snapshot versions do not modify git-describe output.
    - adjust signal_handler for version changes.
    - revert unintended change to ubuntu sources list
    - drop modification of version during make-tarball, tools changes.
    - adjust tools and version information.
    - Update build tools to work with git [Lars Kellogg-Stedman]
    - fix pep8 errors in mcollective unit tests
    - mcollective: add tests, cleanups and bug fix when no config in /etc.

 -- Scott Moser <smo...@ubuntu.com>  Thu, 15 Sep 2016 09:57:27 -0400

** Changed in: cloud-init (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1619394

Title:
  base64 user-data broken in OVF datasource

Status in cloud-init:
  Fix Released
Status in cloud-init package in Ubuntu:
  Fix Released
Status in cloud-init source package in Xenial:
  Fix Released

Bug description:
  ==== Begin SRU Template ====
  [Impact] 
  Users of the OVF datasource can not provide user-data that is base64 encoded.

  [Test Case]
  $ rel=xenial
  $ burl="http://cloud-images.ubuntu.com/daily/server/$rel/current/";
  $ disk="$rel-server-cloudimg-amd64-disk1.img"
  $ wget "$burl/$disk" -O "$disk"

  # prepare the ovftransport.iso
  $ git clone http://git.launchpad.net/cloud-init
  $ ( cd cloud-init/doc/sources/ovf && ./make-iso ovf-env.xml.tmpl user-data 
--output - ) > ovftransport.iso

  # create a temp disk for patching and patch in -proposed
  $ qemu-img create -f qcow2 -b "$disk" disk.img
  $ sudo mount-image-callback --system-resolvconf disk.img -- chroot 
_MOUNTPOINT_ \
      sh -c 'l=/etc/apt/sources.list.d/proposed.list;
         echo deb http://archive.ubuntu.com/ubuntu/ xenial-proposed main > "$l" 
&&
         apt-get -q update && apt-get install -qy cloud-init'

  $ qemu-system-x86_64 -enable-kvm \
     -device virtio-net-pci,netdev=net00 -netdev type=user,id=net00  \
     -hda disk.img -cdrom ovftransport.iso -m 512 -curses -snapshot

  # you will see an 'ovfdemo' login prompt, log in as root:passw0rd
  # verify it worked by cat /var/lib/cloud/instance/user-data.txt

  [Regression Potential] 
  very low chance for regression, a guest with user-data would be broken 
previously.

  ==== End SRU Template ====

  
  I am using cloudint 0.7.7~bzr1256-0ubuntu1~16.04.1 on Ubuntu 16.04.1 LTS.

  When I pass yaml-formatted user-data  over the OVF datasource over the
  ISO transport the yaml string fails to be parsed.

  I tracked this to minidom's inability to handle newlines in an
  attribute. The xml bellow works for coreos but breaks under cloud-
  init:

  <PropertySection>
           <Property oe:key="user-data" oe:value="#cloud-config
  ---
  users:
    - name: "test"
      passwd: "$1$NVdKo9MI$PlHasfYsufCHbP1Hh9TMz/"
      groups:
        - "sudo"
  "/>
  </PropertySection>

  If I use base64-encoded user-data I get this error:

    Sep 01 12:07:43 sof2-lab3-dhcp371 cloud-init[3248]: 2016-09-01 12:07:43,854 
- __init__.py[WARNING]: Unhandled non-multipart (text/x-not-multipart) 
userdata: 'b'I2Nsb3VkLWNvbmZpZwotLS0K'...'
    Sep 01 12:07:43 sof2-lab3-dhcp371 cloud-init[3248]: [CLOUDINIT] 
__init__.py[WARNING]: Unhandled non-multipart (text/x-not-multipart) userdata: 
'b'I2Nsb3VkLWNvbmZpZwotLS0K'...'

  Is there a way to pass user-data as a single-line string that doesn't
  confuse minidom?

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