Switch to rpcd based uci apply/rollback workflow which helps to avoid soft-
bricking devices by requiring an explicit confirmation call after config
apply.
When a user now clicks "Save & Apply", LuCI first issues a call to uci apply
which commits and reloads configuration, then goes into a polling countdown
mode where it repeatedly attempts to call uci confirm.
If the committed configuration is sane, the confirm call will go through and
cancel rpcd's pending rollback timer.
If the configuration change leads to a loss of connectivity (e.g. due to bad
firewall rules or similar), the rollback mechanism will kick in after the
timeout and revert configuration files and pending changes to the pre-apply
state.
In order to cover such rare cases where a lost of connectivity is expected
and desired, the user is offered an "unchecked" apply option after timing
out, which allows committing and applying the changes anyway, without the
extra safety checks.
As a consequence of this change, the luci-reload mechanism is now completely
unsused since rpcd uses ubus config reload signals to reload affected
services, which means that only procd-enabled services will receive proper
reload treatment with the new workflow.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Introduce luci.model.uci.set_session_id() and luci.model.uci.get_session_id()
to set and get the effective session ID respectively.
When a session ID is set, it is sent as `ubus_rpc_session` attribute to rpcd,
causing it to use per-session change directories, isolating LuCI changes from
the global system uci state.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Previously, get_list("fake", "non-existent", "notreal") would still
return a table, just empty. This is nice, as you can always iterate the
returned table, without having to check it first.
However, if you happened to pass a nil for any of the parameters, you
would actually get a nil in return. This was inconsistent.
The documentation is updated to clarify the behaviour of this function.
Signed-off-by: Karl Palsson <karlp@remake.is>
Allows lists fetched with get_list to be modified and simply passed back
to set_list. Explicitly calling set_list() with an empty list is clearly
requesting that there be zero list items, ie, deletion of the option
altogether.
Signed-off-by: Karl Palsson <karlp@remake.is>
