If shell_exec()/exec() is not available allow using API methods to manage archives

[diosmosis]

On some systems it's not possible to use shell_exec()/exec() to start the import. We can provide an alternative by providing a way to initialize imports via API methods.

This would require:

• an API method to import entities
• an API method to start an import for a day and when finished invoke the next day if the daily API request limit hasn't been reached
  • we only do one day at a time to avoid any server side request timeouts
• if a setting is set or we can't run shell_exec/exec, use the API method in Tasks.php & Importer.php

[MatomoForumNotifications]

This issue has been mentioned on Matomo forums. There might be relevant details there:

https://forum.matomo.org/t/google-analytics-importer-disabled-for-security-reasons/45675/2

[herbdool]

I'd like to vote this up. Not just for security reasons but also for avoiding the use of nohup so it doesn't potentially consume all server resources and crash.

[AltamashShaikh]

@herbdool Added for prioritisation and our product team will have a look on this one