CVS log for loncom/interface/lonexttool.pm

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- For 2.11.4 (modified)
  Include changes in 1.29

- Destination URL which differs from launch URL can be specified for an LTI
  Provider which does not support specifying this in another way (e.g., via
  custom parameter in launch payload, or as string appended to launch URL).

- For 2.11.4 (modified)
  Include changes in rev. 1.28

- When encrypturl is in effect extra effort may be needed to get the symb.
  Also try to avoid sending an empty string in the signed LTI launch payload
  for resource_link_title and resource_link_id, because for some reason, the
  ProctorU LTI 1.1 Provider requires something other than no value for them.

- For 2.11.4 (modified)
  Include changes in 1.27

- Bug 6754. Wrap URI in launch_presentation_return_url when not in iframe.

- For 2.11.4 (modified)
  Include changes in 1.26

- Bug 6754. LON-CAPA as LTI Consumer.
  External Tool definition can include: "Return URL sent on launch", and
  if Y, value sent can be set in each tool instance in a course.

- For 2.11.4 (modified)
  Reverse changes in rev. 1.22.2.1. Include changes in 1.24, 1.25.

- Bugs 6754 and 6907
  - Return of grades to launcher CMS supported for resources or folders
    accessed via LTI-mediated deep link.
  - Support option: "Encrypt stored consumer secrets defined in domain"
  - Signing of LTI payloads for roster retrieval, passback of grades,
    and callback to logput launcher CMS session all now occur on
    primary library server for course's domain.

- Bug 6754
  - Can select from tool definitions set in course's domain or in course
    itself when using External > "External Tool" in Course Editor.
  - DC's configuration for allowed use of esternal tools within course types
    (can be overridden for specific course(s)) determines which External Tool
    types (if any) may be added to a course.
  - Signing of LTI payload used to launch an external tool now carried out
    on course's home server.

- For 2.11.4 (modified)
  Include changes in 1.23

- Bug 6754
  Documentation says to use Encode::decode('UTF-8',$string) instead of
  Encode::decode_utf8($string) for data exchange.

- For 2.11.4 (modified)
  Remove passback and roster options, and related routines.

- Make args order in call to ltiutils::sign_params() consistent with change
  in ltiutils rev. 1.17

- Bug 6914.
  Replace hostname with alias when creating absolute URLs, if alias in use.

- For 2.11.2 (modified)
  Remove passback and roster options, and related routines.

- Remove trailing whitespace.
- End lines with semi-colons.

- Bug 6754 LON-CAPA as LTI Consumer
  Domain configuration for information sent to Tool Provider on launch
  includes choice of: username, or username:domain in LON-CAPA,
  when "User" is included in the data to be sent (as lis_person_sourcedid).

- For gradable external tools which are using slot control, need to store
  self check-in result for slots without proctor check-in.

- Bug 6754 LON-CAPA as LTI Consumer
  - lis_result_sourcedid and ext_ims_lis_memberships_id do not need to be
    stored in exttools.db, as LTI Provider will store them.
  - Check if digest_symb and digest_user have previously been stored in
    exttools.db.

- Bug 6754 LON-CAPA as LTI Consumer
  Domain configuration for information sent to Tool Provider on launch
  includes choice of: username, or username:domain in LON-CAPA,
  when "User" is included in the data to be sent (as lis_person_sourcedid).

- Bug 6754 LON-CAPA as LTI Consumer: External Tools in printouts.
  - Show name of tool instance in course (with points earned,
    if gradable and status is SHOW_ANSWER).

- Bug 6754 LON-CAPA as LTI Consumer
  - Signature method can be HMAC-SHA1 (default), or HMAC-SHA256, if LTI
    Provider supports it.

- Done button can be used with a gradable external tool to terminate
  access.

- Bug 6754 LON-CAPA as LTI Consumer
  Support for access control using slots, and also for time interval
  for external tools set to be "gradable".

- Option to suppress menu when displaying loncommon::simple_error_page()
  within a wrapped page.

- Bug 6754 LON-CAPA as LTI Consumer
  - Use correct subroutine name to fetch signature for unique identifier.

Bug 6754 LTI Integration
- ltiutils.pm contains common LTI routines (to facilitate re-use).
  - &check_nonce() moved from ltiauth.pm to ltiutils.pm.
  - &set_callback_secret() moved from lonexttool.pm to ltiutils.pm, and
    renamed &set_service_secret().
  - &sign_params(), &get_tool_lock(), and &release_tool_lock() moved from
    lonexttool.pm to ltiutils.pm
- ltiroster.pm will service requests for course membership information
  from an LTI Provider, where domain configuration for Tool permits this
  service, and launch (by Instructor( included ext_ims_lis_memberships_id.

- Bug 6754 LON-CAPA as LTI Consumer
  - Missing : in URLs for retrieval of roster from LTI Consumer, and
    passback of grades to LTI Consumer.
  - Correct secret used to make signature for ext_ims_lis_memberships_id

- Bug 6754 LTI Integration.
  Rename get_domain_ltitools() routine in lonnet.pm as get_domain_lti(),
  and require second argument -- $context -- either: consumer or provider).

- LON-CAPA as LTI Consumer.
  - Unique lis_result_sourcedid item created on tool launch for passback
    of grades from tool provider to LTI Consumer.
  - Unique 'ext_ims_lis_memberships_id created on tool launch for tool
    provider to use to obtain course roster from LTI Consumer.
  - Domain configuration to specify how long after launch the two items can
    be used -- days for passback of grades; seconds for retrieval of roster.
- LONCAPA-prerequistes requires perl-UUID-Tiny to be added.

- LON-CAPA as LTI Consumer.
  - Value in custom field passed to Tool Provider on launch can be the value
    of an item in %env. (Include LONCAPA::env{<var name>} when adding the
    custom field in the domain configuration, where <var name> is the
    env var for which the value is to be sent).
  - Course Coordinator can set a path to append to the standard URL to
    which the signed POSTed data are sent. (Path can be different for
    each tool instance).

- Bug 6754. Make LON-CAPA an LTI Tool Consumer (LTI 1.1).
  - Domain cofiguration to determine whether context_label, context_title,
    and launch_presentation_document_target LTI parameters can be configured
    for each instance of use of LTI Tool in a course.

- Bug 6754. Make LON-CAPA an LTI Tool Consumer (LTI 1.1). Work in progress.

- Fix typo and call to subroutine.

- Start work on LON-CAPA LTI Consumer framework -- work in progress.
  - requires Net::OAuth and Digest::SHA