GitLab

By connecting to the "notify::country-code" signal of our origins.

This helps to unbreak country code lookup (see 5fd39121).

The test suite can be further expanded later. For now this suffices to
have some basic regression testing for multiple provider support in place.

A g_debug() will suffice which will let us get rid of g_test_expect_message() to
as we don't need to guard against the warning anymore.

This avoids confusion when only the SIP plugin is loaded, but no account
is being used.

For this we introduce two new functions in the abstract CallsProvider class:
`is_modem()` to indicate whether the the provider deals with PTSN telephony and
`is_operational()` which by default simply checks if there any avalaible origins

If we initially invoked `gnome-calls -p sip` and later invoke
`gnome-calls sip:user@host` we don't expect to have the default MM provider
added.

This makes it easy to access application wide settings.

This includes the following changes:
- Introduce a `providers` hash table to keep track of multiple CallProvider's
  and remove the `provider` member
- Remove `calls_manager_get_provider()` and `calls_manager_set_provider()`
  in favour of `calls_manager_add_provider()`, `calls_manager_remove_provider()`
  and `calls_manager_has_provider()`
- Introduce a `origins` GListStore to keep track of available origins.
  `origins` is updated in `items_changed_cb()` when the origins of any
  CallsProvider are updated.
- Adapt to changes with respect to `calls_manager_get_origins()`.
- Introduce `origins_by_protocol` hash table to keep track of available origins
  per protocol.
- Adjust tests
- We temporarily break country code lookup which was handled previously
  with the "default-origin" mechanism. We will add it back to the CallsSettings
  class which will provide a better application-wide mechanism.

This will allow selecting a suitable origin when placing outgoing calls.

These are the protocols that the provider plugin may support. The origins
must be queried independently whether or not they support any given protocol.

Example: A SIP origin/account may or may not support the "tel" protocol.

This is in preparation for supporting multiple providers (which are handling
different protocols/URI schemes).

This commit also changes the underlying database schema.

Unit test the `get_protocol_from_address()` function family.

Otherwise we run into trouble when using `g_list_store_find()`

This will make it easier to select an origin for outgoing calls. Without this
change the name might be "0" which is not very expressive.

Document calls_origin_get_name() correctly as transfer-full.
Additionaly fix related memory leaks.

There is no need to redo it for every added plugin.

We don't have to build each source for every test, instead we could
create a static library link it with every test, which will be a lot
faster.

This interface should by implemented by providers for which the user can add
or remove accounts.

This interface should be implemented by origins which represent an online
account. This means they must have a implement a property representing the
credentials and another representing the account state (online, offline, etc).

All parts not related to credentials are now being set when creating the nua
handles and then updated with nua_set_params() when the credentials get updated.

CallsCredentials is a dumb container to store account credentials.
This is done in preparation for the account management in the UI.

The old one is giving a 403 Forbidden semi regularly.

nua_* calls need TAG_END or TAG_NULL as the final parameter.

instead of relying so much on g_timeout_add()