While we request a scan, we are not yet actually scanning. That means, the supplicant's
"scanning" property will only change to TRUE a while after we initiate the scan. It may
even never happen.
We thus need to handle that the request is currently pending and react when the
request completes.
Add nm_utils_invoke_on_timeout() beside nm_utils_invoke_on_idle().
They are fundamentally similar, except one schedules an idle handler
and the other a timeout.
Also, use the current g_main_context_get_thread_default() as context
instead of the singleton instance. That is a change in behavior, but
the only caller of nm_utils_invoke_on_idle() is the daemon, which
doesn't use different main contexts. Anyway, to avoid anybody being
tripped up by this also change the order of arguments. It anyway
seems nicer to first pass the cancellable, and the callback and user
data as last arguments. It's more in line with glib's asynchronous
methods.
Also, in the unlikely case that the cancellable is already cancelled
from the start, always schedule an idle action to complete fast.
The comment isn't right. The fixed array size is in the header file,
because other parts of the code need to know how many elements are in
the array. The alternative would be a define for the size, but that
is only redundant information. Also, even with a define the user who
adds an entry needs to adjust the code in the header. Explicitly stating
the array size in the header makes it almost impossible to accidentally
choosing the wrong size, because the compiler (and unit tests) ensure
the consistency.
We have this as a GObject property, so that it can be set at construct
time (to be never modified afterwards). We don't need a readable
GObject property, because there is a getter function that should be
used instead.
- avoid g_assert(). Either we want to gracefully assert (g_return_*()) or we
want to use assertions that are disabled in production builds (nm_assert());
- rename variable s_connection to s_con. This is how variables for this
purpose are commonly called.
The profile's "ipv4.gateway" and "ipv6.gateway" has only one real
purpose: to define the next hop of a static default route.
Usually, when specifying a gateway in this way, the default route from
other addressing methods (like DHCPv4 or IPv6 autoconf) gets ignored.
If you have a WireGuard peer with "AllowedIPs=0.0.0.0/0" and
"wireguard.peer-routes" enabled, NetworkManager would automatically add
a route to the peer. Previously, if the user also set a gateway, that
route was suppressed.
That doesn't feel right. Note that configuring a gateway on a WireGuard
profile is likely to be wrong to begin with. At least, unless you take
otherwise care to avoid routing loops. If you take care, setting a
gateway may work, but it would feel clearer to instead just add an
explicit /0 manual route instead.
Also, note that usually you don't need a gateway anyway. WireGuard is a
Layer 3 (IP) tunnel, where the next hop is alway just the other side of
the tunnel. The next hop has little effect on the routes that you
configure on a WireGuard interface. What however matters is whether a
default route is present or not.
Also, an explicit gateway probably works badly with "ipv[46].ip4-auto-default-route",
because in that case the automatism should add a /0 peer-route route in a
separate routing table. The explicit gateway interferes with that too.
Nonetheless, without this patch it's not obvious why the /0 peer
route gets suppressed when a gateway is set. Don't allow for that, and
always add the peer-route.
Probably the profile's gateway setting is still wrong and causes the
profile not to work. But at least, you see all routes configured, and
it's clearer where the (wrong) default route to the gateway comes from.
This will be useful to set future options on the NMIPConfig.
Yes, the code duplication of NMIP[46]Config is horrible. Needs
to be unified in the future.
We shall emit a changed signal when PolicyKit changes. That implies also
emitting the signal when PolicyKit starts. Watch the name owner for
that.
Note that I don't manage to actually receive the "Changed" signal from
PolicyKit. That seems to be due to wrong D-Bus configuration which
prevents the "Changed" signal from PolicyKit to reach NetworkManager.
That is independent from this patch.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/469
Fix the following error when invoking the Connect() p2p method:
call-p2p-connect: failed with Method “fi.w1.wpa_supplicant1.Interface.P2PDevice.Connect” returned type “(s)”, but expected “()”
Fixes: b83f07916a ('supplicant: large rework of wpa_supplicant handling')
- indent by 4 spaces, not 8. We do that for the other 2 D-Bus
configuration files. Also, since our lines here are rather long,
save a bit in this regard.
- don't wrap lines for the XML elements. It makes it easier to visually
parse.
- sort some lines asciibetically.
No changes otherwise.
When the server is restarted the write to unix socket fails with
EPIPE. In such case, don't fail all the calls in queue; instead, after
a sync of the ovsdb state (through a monitor call), start processing
the queue again, including the call that previously failed.
Add a retry counter to avoid that calls are stuck in the queue forever
in a hypothetical scenario in which the write always fails.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/459
This was previously tracked via a signal "scanning-prohibited".
However, I think it was buggy, because the signal didn't specify
a GSignalAccumulator, so when a NMDeviceOlpcMesh registered a handler,
NMDeviceWifi.scanning_prohibited() was ignored.
In theory, a GObject signal decouples the target and source of the
signal and is more abstract. But more abstraction is worse, if there
is exactly one target who cares about this signal: the OLPC mesh.
And that target is well known at compile time. So, don't pretend that
NMDeviceWifi or NMDeviceOlpcMesh aren't aware that they are together in
this.
Another downside of the signal is that you don't know when scanning gets
unblocked. You can only poll and asked whether it is blocked, but there
was no mechanism how NMDeviceWifi would be notified when scanning is
no longer blocked.
Rework this. Instead, the OLPC mesh explicitly registers and unregisters
its blocking state with nm_device_wifi_scanning_prohibited_track().
It feels better to first parse input arguments before authenticating.
One argument for otherwise would be that we shouldn't reveal any
information about the request before authenticating it. Meaning: every
request (even with invalid arguments) should fail with
permission-denied.
However, I prefer this for minor reasons:
- what makes a valid request is no secret. And if somebody makes an
invalid request, it should fail with invalid-arguments first.
- we possibly can short cut the expensive authentication process, where
we ask PolicyKit.
- by extracting the options variant early and only pass on the SSIDs
array, we handle the encoding of the options array earlier and where
it belongs: closer to the D-Bus request that defines the meaning of
the argument.
Also, change the failure reason to return invalid-argument.
This was first introduced by commit 4ed4b491fa ('2005-12-31 Dan
Williams <dcbw@redhat.com>'), a very long time ago.
It got reworked several times, but I don't think this code makes sense
anymore. So, if nm_platform_wifi_get_quality() returns an error, we
would ignore it for three times, until we would set the strength to the
error code (presumably -1). Why? If we cannot read the strength via
nl80211/WEXT, then we should just keep whatever we got from supplicant.
Drop this.
Also, only accept the percentage if it is in a valid range from 0 to
100%. If the driver (or platform code) gives us numbers out of that
range, we have no idea what their meaning is. In that case, the value
must be fixed in the lower layers, that knows how to convert the value
from the actual meaning to the requested percentage.
