[prosEO CLI] Null user and commands which require login

[dlr-tangosierra]

Testing parameters:
User Login: no user login
Mission : no mission

Context:
When the user tries a command which requires login, [mission show] in this case, the error messages show that the user is not logged in which is a normal output message but as a second message the system shows to the user that it tries to revert to a null user for privileges. From the system design point of view, this could be a security concern, in case by mistake the null user gains such privileges. The nature of this error message causes confusion as well and is a security concern by itself.

Example output:
prosEO> mission show
(E2802) User not logged in
(E2803) User null not authorized to manage missions for mission null

Examples with other commands:
example for the command [product show]
prosEO> product show abc
(E2802) User not logged in
(E2803) User null not authorized to manage products for mission null

example for the command [productclass show]
prosEO> productclass show
(E2802) User not logged in
(E2803) User null not authorized to manage product classes for mission null

example for the command [productclass delete]
prosEO> productclass delete abc
(E2802) User not logged in
(E2803) User null not authorized to manage product classes for mission null

example for the command [productclass update]
prosEO> productclass update abc
(E2802) User not logged in
(E2803) User null not authorized to manage product classes for mission null

Similar issues occur with the commands [orbit], [order] and [configuration]

[tangobravo62]

Fixed. "mission show" is allowed without login, and all other commands require prior login:

prosEO> mission show
---
- id: 59
  version: 1
  code: "ABC"
  name: null
  fileClasses:
  - "OPER"
  processingModes:
  - "OFFL"
  productFileTemplate: null
  spacecrafts:
[...]

prosEO> product show abc
(E2802) User not logged in
prosEO> productclass show
(E2802) User not logged in
prosEO> productclass delete abc
(E2802) User not logged in
prosEO> productclass update abc
(E2802) User not logged in
prosEO>