Use scapy library which allows one to easily construct and fudge various
network packets. This makes constructing spoofed packets much easier
and more readable compared to hex-encoded, hand-crafted frames.
The TA/BSSID addresses of spoofed disassociate frames were set
incorrectly. They should be using the 02:00:00:XX:XX:XX address, but
instead were being converted over to 42:00:00:XX:XX:XX address
There is really no reason to have hwsim create interfaces automatically
for test-runner. test-runner already does this for wpa_supplicant and
hostapd, and IWD can create the interface itself.
Similarly to hostapd.wait_for_event, IWD's variant needed to act on
an IO watch because events were being received prior to even calling
wait_for_event.
With how fast UML is hostapd events were being sent out prior to
ever calling wait_for_event. Instead set an IO watch on the control
socket and cache all events as they come. Then, when wait_for_event
is called, it can reference this list. If the event is found any
older events are purged from the list.
The AP-ENABLED event needed a special case because hostapd gets
started before the IO watch can be registered. To fix this an
enabled property was added which queries the state directly. This
is checked first, and if not enabled wait_for_event continues normally.
This was not being properly honored when existing networks were
already populated. This poses an issue for any test which uses
full_scan after setting radio values such as signal strength.
If an event is in response to some command which is returning an
unexpected value (unexpected with respect to wpas.py) handle_eow
would raise an exception.
Specifically with DPP this was being hit when the URI was being
returned.
Adds a new wait argument which, if false, will call the DBus method
and return immediately. This allows the caller to create multiple
radios very quickly, simulating (as close as we can) a wifi card
with dual phy's which appear in the kernel simultaneously.
The name argument was also changed to be mandatory, which is now
required by hwsim.
Controlling wpa_supplicant/hostapd from a text based interface is
problematic in that there is no way of knowing if an event corresponds
to a request. In certain cases if wpa_s/hostapd is sending out multiple
events and we make a request, a random event may come back after the
request, but before the actual result.
To fix this, at least for this specific case, we can continue to read
from the socket until the result is numeric.
Some wpa_cli utilities return some result which isn't possible to
get with wait_for_event unless you know what the result will be.
This adds wait_for_result which just returns the first event that
comes in.
wait_for_event was checking the event string presence in the rx_data
array which meant the event string had to match perfectly to any
received events. This poses problems with events that include additional
information which the caller may not be able to know or does not care
about. For example:
DPP-RX src=02:00:00:00:02:00 freq=2437 type=11
Waiting for this event previously would require the caller know src, freq,
and type. If the caller only wants to wait for DPP-RX, it can now do that.
Since a Device class can represent multiple modes (AP, AdHoc, station)
move StationDebug out of the init and only create this class when it
is used (presumably only when the device is in station mode).
The StationDebug class is now created in a property method consistent
with 'station_if'. If Device is not in station mode it is automatically
switched if the test tries any StationDebug methods.
If the Device mode is changed from 'station' the StationDebug class
instance is destroyed.
Passing the full argument list to StationDebug was removed
because any existing properties (for Device) were being
included and causing incorrect behavior.
This neglected to handle namespaces which should also be
passed to StationDebug. Unfortunately the arguments are not
named when Device() is initialized so they cannot easily be
sorted. Instead just define Device() arguments to match the
DBus abstraction and pass only the path and namespace to
StationDebug
Passing *args, **kwargs into StationDebug ended up initializing the
class with Station properties since devices can be initialized from
existing property dictionaries. Since the object path is all
StationDebug needs, pass args[0] instead.
Certain scenarios coupled with lost beacons could result in OrderedNetwork
being initialized many times until the dbus library reached its maximum
signal registrations. This could happen where there are two networks,
IWD finds one in a scan but continues to scan for the other and the beacons
are lost. The way get_ordered_networks was written it returns early if any
networks are found. Since get_ordered_network (not plural) uses
get_ordered_networks() in a loop this caused OrderedNetwork's to be created
rapidly until python raises an exception.
To fix this, pass an optional list of networks being looked for to
get_ordered_networks. Only if all the networks in the list are found will
it return early, otherwise it will continue to scan.
REKEY_GTK kicks off the GTK only handshake where REKEY_PTK does
both (via the 4-way). The way this utility was written was causing
hostapd some major issues since both REKEY_GTK and REKEY_PTK was
used.
Instead if address is set only do REKEY_PTK. This will also rekey
the GTK via the 4-way handshake.
If no address is set do REKEY_GTK which will only rekey the GTK.
This was a placeholder at one point but modules grew to depend on it
being a string. Fix these dependencies and set the root namespace
name to None so there is no more special case needed to handle both
a named namespace and the original 'root' namespace.
mac80211_hwsim has a funny quirk with multiple addresses in
radios. Some operations require address index zero, some index
one. And these addresses (possibly a result of how test-runner
initializes radios) sometimes get mixed up. For example scan
results may show a BSS address as 02:00:00:00:00:00, while the
next test run shows 42:00:00:00:00:00.
Ultimately, sending out frames requires the first nibble of the
address to be 0x4 so to handle both variants of addresses described
above hwsim.py was updated to always bitwise OR the first byte
with 0x40.
There are really no cases where a test wants to remove a single
rule. Most loop through and remove rules individually so this
is being added as a convenience.
