[passage-dev] resending: License Agreements support

[Elena Parovyshnaya <elena.parovyshnaya@xxxxxxxxx>]

Dear Passage,

we've just bumped into strong necessity for licensing agreements support in Passage.

Currently, if a Passage client desires to cover a product with EULA or other terms of use (which they most probably do), they must implement the coverage themselves, somewhere jolting with Passage protection.

We found, that
 - general notion of licensing agreement nicely fits contemporary licensing meta model, and
 - Passage runtime can also be naturally extended
       - to convey the agreements to an end user,
       - to take the agreements' acceptance state into consideration on Access Cycle functioning.

The implementation idea is
    - to keep license agreements data embedded in an issued license itself
    - to make 'license import' the only legal way to apply a license to product installation
    -     by extending 'license import' with all the assigned agreements exposure, demanding `accept` and failing the whole import on a denial
    -     and checking agreements' consistency on Access Cycle

Root task for the story is https://bugs.eclipse.org/bugs/show_bug.cgi?id=575137

If you have any thoughts or wishes in the field, do not hesitate to let us know.


With best and warmest regards,

-- 
P