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[Brian Rosmaita <rosmaita.fossdev@xxxxxxxxx>]

** Also affects: glance/queens
   Importance: Undecided
       Status: New

** Changed in: glance/queens
    Milestone: None => queens-stable-2

** Changed in: glance/queens
   Importance: Undecided => High

** Changed in: glance/queens
       Status: New => Triaged

** Changed in: glance/queens
     Assignee: (unassigned) => Abhishek Kekane (abhishek-kekane)

** Tags removed: queens-backport-potential

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https://bugs.launchpad.net/bugs/1736336

Title:
  Image data stays in backend if image signature verification fails

Status in Glance:
  In Progress
Status in Glance queens series:
  Triaged

Bug description:
  If image signature verification is enabled then while creating the
  image if verfication fails then it returns vaild error, deletes image
  from the database but image data stays in the bakend forever.

  Ideally if image verfication fails then it should delete the data from
  the backend as well.

  Pre-requisites:
  1. Ensure Barbican is enabled
  2. Create Keys and Certificate (Reference  https://etherpad.openstack.org/p/mitaka-glance-image-signing-instructions#90)
  3. Create Signature (Reference https://etherpad.openstack.org/p/mitaka-glance-image-signing-instructions#184) and note down output of 'signature_64'
  4. Create context and upload certificate using context (Reference https://etherpad.openstack.org/p/glance-image-signing-create-context) and note down output of 'cert_uuid'

  
  Steps to reproduce:
  1. Upload Image to Glance, with Signature Metadata
     img_signature_certificate_uuid = 'fb67edd2-95ef-404b-9af2-910708c6d9b7'
     img_signature_hash_method = 'SHA-256'
     img_signature_key_type = 'RSA-PSS'
     img_signature = 'ezccBYtJEdj2gOrN09woioHwi2rDVvBsmRI0i+9EYAYdE7E6FV8jzJD9BImcq/m7Dm6yZZPkCUHz+y4HBKeYqK0+otcz921zaeqcKGBvU1t7J9AL0hEgJbWg0RY6RXqDXpsOQrrkrHuna4O+BUOp6sPwb3j2eFYbbsqW6d/obgM=' (different which is noted in Pre-requisites section Point 4 as 'signature_64')

     $ glance image-create --property
  name=cirrosSignedImage_goodSignature --property is-public=true
  --container-format bare --disk-format qcow2 --property
  img_signature='abcdBYtJEdj2gOrN09woioHwi2rDVvBsmRI0i+9EYAYdE7E6FV8jzJD9BImcq/m7Dm6yZZPkCUHz+y4HBKeYqK0+otcz921zaeqcKGBvU1t7J9AL0hEgJbWg0RY6RXqDXpsOQrrkrHuna4O+BUOp6sPwb3j2eFYbbsqW6d/obgM='
  --property img_signature_certificate_uuid='fb67edd2-95ef-404b-
  9af2-910708c6d9b7' --property img_signature_hash_method='SHA-256'
  --property img_signature_key_type='RSA-PSS' --file
  cirros-0.3.2-source.tar.gz

  Note:
  'img_signature' starts with 'ezcc...' but in create command I have passed as 'abcd..'

  Actual Output:
  +--------------------------------+----------------------------------------------------------------------------------+
  | Property                       | Value                                                                            |
  +--------------------------------+----------------------------------------------------------------------------------+
  | checksum                       | None                                                                             |
  | container_format               | bare                                                                             |
  | created_at                     | 2017-12-05T07:04:38Z                                                             |
  | disk_format                    | qcow2                                                                            |
  | id                             | 6e8bec71-2176-4bcc-a732-2f76c5ac589f                                             |
  | img_signature                  | abcdBYtJEdj2gOrN09woioHwi2rDVvBsmRI0i+9EYAYdE7E6FV8jzJD9BImcq/m7Dm6yZZPkCUHz+y4H |
  |                                | BKeYqK0+otcz921zaeqcKGBvU1t7J9AL0hEgJbWg0RY6RXqDXpsOQrrkrHuna4O+BUOp6sPwb3j2eFYb |
  |                                | bsqW6d/obgM=                                                                     |
  | img_signature_certificate_uuid | fb67edd2-95ef-404b-9af2-910708c6d9b7                                             |
  | img_signature_hash_method      | SHA-256                                                                          |
  | img_signature_key_type         | RSA-PSS                                                                          |
  | is-public                      | true                                                                             |
  | min_disk                       | 0                                                                                |
  | min_ram                        | 0                                                                                |
  | name                           | cirrosSignedImage_goodSignature                                                  |
  | owner                          | 4f186fe25c934eeb95186fd0c5afda49                                                 |
  | protected                      | False                                                                            |
  | size                           | None                                                                             |
  | status                         | queued                                                                           |
  | tags                           | []                                                                               |
  | updated_at                     | 2017-12-05T07:04:38Z                                                             |
  | virtual_size                   | None                                                                             |
  | visibility                     | shared                                                                           |
  +--------------------------------+----------------------------------------------------------------------------------+
  $ 400 Bad Request: Signature verification failed for image 6e8bec71-2176-4bcc-a732-2f76c5ac589f: Signature verification failed (HTTP 400)

  Expected Output:
  $ 400 Bad Request: Signature verification failed for image 6e8bec71-2176-4bcc-a732-2f76c5ac589f: Signature verification failed (HTTP 400)

  
  NOTE: Image data stays in backend
  $ ls -lah /opt/stack/data/glance/images/6e8bec71-2176-4bcc-a732-2f76c5ac589f

  total 15M
  drwxr-xr-x. 2 centos centos  270 Dec  5 07:04 .
  drwxr-xr-x. 5 centos centos   46 Dec  5 04:42 ..
  -rw-r--r--. 1 centos centos 420K Dec  5 07:04 6e8bec71-2176-4bcc-a732-2f76c5ac589f

  
  Glance-api logs:
  Dec 05 07:04:38 signature-test.rdocloud devstack@g-api.service[25628]: ERROR glance.api.v2.image_data [None req-b81d5e9c-8d5c-4b48-b7c8-efe546c3aa97 demo admin] Signature verification failed for image 6e8bec71-2176-4bcc-a732-2f76c5ac589f: Signature verification failed: SignatureVerificationError: Signature verification failed

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