The signal agent notifications were changed which breaks this test.
Specifically commit ce227e7b94 sends a notification when connected
which breaks the 'agent.calls' check. Since this check is done both
after connecting and once already connected the initial value may
be 1 or 0. Because of this that check was removed entirely.
This test was just piping the PSK files into /tmp/iwd/ssidCCMP.psk
which is a bit fragile if the storage dir was ever to change. Instead
use copy_to_storage and the 'name' keyword to copy the file.
If the user specifies the same parent directory for several outfiles
skip mounting since it already exists. For example:
--monitor /outfiles/monitor.txt --result /outfiles/result.txt
Inside the virtual environments /tmp is mounted as its own FS and not
taken from the host. This poses issues if any output files are directly
under /tmp since test-runner tries to mount the parent directory (/tmp).
The can be fixed by ensuring these output files are either not under
/tmp or at least one folder down the tree (e.g. /tmp/outputs/outfile.txt).
Now this requirement is enforced and test-runner will not start if any
output files parent directory is /tmp.
Usually the test home directory is a git repo somewhere e.g. under
/home. But if the home directory is located under /tmp this poses
a problem since UML remounts /tmp. To handle both cases mount
the home directory explicity.
Certain aspects of QEMU like mounting host directories may still require
root access but for UML this is not the case. To handle both cases first
check if SUDO_UID/GID are set and use those to obtain the actual users
ID's. Otherwise if running as non-root use the UID/GID of the user
directly.
A user reported that IWD was failing to FT in some cases and this was
due to the AP setting the Retry bit in the frame type. This was
unexpected by IWD since it directly checks the frame type against
0x00b0 which does not account for any B8-B15 bits being set.
IWD doesn't need to verify the frame type field for a few reasons:
First mpdu_validate checks the management frame type, Second the kernel
checks prior to forwarding the event. Because of this the check was
removed completely.
Reported-By: Michael Johnson <mjohnson459@gmail.com>
station_signal_agent_notify() has been refactored so that its usage is
simpler. station_rssi_level_changed() has been replaced by an inlined
call to station_signal_agent_notify().
The call to netdev_rssi_level_init() in netdev_connect_common() is
currently a no-op, because netdev->connected has not yet been set at
this stage of the connection attempt. Because netdev_rssi_level_init()
is only used twice, it's been replaced by two inlined calls to
netdev_set_rssi_level_idx().
The SignalLevelAgent API is currently broken by the system bus's
security policy, which blocks iwd's outgoing method call messages. This
patch punches a hole for method calls on the
net.connman.iwd.SignalLevelAgent interface.
There may be situations where DNS information should not be set (for
example in auto-tests where the resolver daemon is not running) or if a
user wishes to ignore DNS information obtained.
Allows granularly specifying the DHCP logging level. This allows the
user to tailor the output to what they need. By default, always display
info, errors and warnings to match the rest of iwd.
Setting `IWD_DHCP_DEBUG` to "debug", "info", "warn", "error" will limit
the logging to that level or higher allowing the default logging
verbosity to be reduced.
Setting `IWD_DHCP_DEBUG` to "1" as per the current behavior will
continue to enable debug level logging.
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
After the initial handshake, once the TK has been installed, all frames
coming to the AP should be encrypted. However, it seems that some
kernel/driver combinations allow unencrypted EAPoL frames to be received
and forwarded to userspace. This can lead to various attacks.
Some drivers can report whether the EAPoL frame has been received
unencrypted. Use this information to drop unencrypted EAPoL frames
received after the initial handshake has been completed.
After the initial handshake, once the TK has been installed, all frames
coming from the AP should be encrypted. However, it seems that some
kernel/driver combinations allow unencrypted EAPoL frames to be received
and forwarded to userspace. This can lead to a denial-of-service attack
where receipt of an invalid, unencrypted EAP-Failure frame generated by
an adversary results in iwd terminating an ongoing connection.
Some drivers can report whether the EAPoL frame has been received
unencrypted. Use this information to drop unencrypted EAP frames
received after the initial handshake has been completed.
Reported-by: Domien Schepers <schepers.d@northeastern.edu>
After the initial handshake, once the TK has been installed, all frames
coming from the AP should be encrypted. However, it seems that some
kernel/driver combinations allow unencrypted EAPoL frames to be received
and forwarded to userspace. This can lead to a denial-of-service attack
where receipt of an invalid, unencrypted EAPoL 1/4 frame generated by an
adversary results in iwd terminating an ongoing connection.
Some drivers can report whether the EAPoL frame has been received
unencrypted. Use this information to drop unencrypted PTK 1/4 frames
received after the initial handshake has been completed.
Reported-by: Domien Schepers <schepers.d@northeastern.edu>
Do not fail an ongoing handshake when an invalid EAPoL frame is
received. Instead, follow the intent of 802.11-2020 section 12.7.2:
"EAPOL-Key frames containing invalid field values shall be silently
discarded."
This prevents a denial-of-service attack where receipt of an invalid,
unencrypted EAPoL 1/4 frame generated by an adversary results in iwd
terminating an ongoing connection.
Reported-by: Domien Schepers <schepers.d@northeastern.edu>
Periodic scan requests are meant to be performed with a lower priority
than normal scan requests. They're thus given a different priority when
inserting them into the wiphy work queue. Unfortunately, the priority
is not taken into account when they are inserted into the
sr->requests queue. This can result in the scanning code being confused
since it assumes the top of the queue is always the next scheduled or
currently ongoing scan. As a result any further wiphy_work might never be
started properly.
Apr 27 16:34:40 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_insert() Inserting work item 3
Apr 27 16:34:40 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_next() Starting work item 3
Apr 27 16:34:40 iwd[5117]: ../iwd-1.26/src/scan.c:scan_periodic_timeout() 1
Apr 27 16:34:40 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_insert() Inserting work item 4
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_insert() Inserting work item 5
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_done() Work item 3 done
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/wiphy.c:wiphy_radio_work_next() Starting work item 5
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/scan.c:scan_notify() Scan notification Trigger Scan(33)
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/scan.c:scan_request_triggered() Passive scan triggered for wdev 1
Apr 27 16:34:43 iwd[5117]: ../iwd-1.26/src/scan.c:scan_periodic_triggered() Periodic scan triggered for wdev 1
In the above log, scan request 5 (triggered by dbus) is started before
scan request 4 (periodic scan). Yet the scanning code thinks scan
request 4 was triggered.
Fix this by using the wiphy_work priority to sort the sr->requests queue
so that the scans are ordered in the same manner.
Reported-by: Alvin Šipraga <ALSI@bang-olufsen.dk>
update_config=1 lets wpa_supplicant write config changes
to the config file. In the real world this is what you want
so your DPP credentials are persistant. But for testing this
is not correct since multiple tests use the same config file
and expect it to be pristine.
Occationally wpa_supplicant was connecting to the AP without
running DPP because the config already had the network
credentials.
The upstream code immediately retransmitted any no-ACK frames.
This would work in cases where the peer wasn't actively switching
channels (e.g. the ACK was simply lost) but caused unintended
behavior in the case of a channel switch when the peer was not
listening.
If either IWD or the peer needed to switch channels based on the
authenticate request the response may end up not getting ACKed
because the peer is idle, or in the middle of the hardware changing
channels. IWD would get no-ACK and immediately send the frame again
and most likely the same behavior would result. This would very
quickly increment frame_retry past the maximum and DPP would fail.
Instead when no ACK is received wait 1 second before sending out
the next frame. This can re-use the existing frame_pending buffer
and the same logic for re-transmitting.
There is a potential corner case of an offchannel frame callback
being called after ROC has ended.
This could happen in theory if a received frame is queued right as
the ROC session expires. If the ROC cancel event makes it to user
space before the frame IWD will schedule another ROC then receive
the frame. This doesn't prevent IWD from sending out another
frame since OFFCHANNEL_TX_OK is used, but it will prevent IWD from
receiving a response frame since no dwell duration is used with DPP.
To handle this an roc_started bool was added to the dpp_sm which
tracks the ROC state. If dpp_send_frame is called when roc_started
is false the frame will be saved and sent out once the ROC session
is started again.
ConnectHiddenNetwork creates a temporary network object and initiates a
connection with it. If the connection fails (due to an incorrect
passphrase or other reasons), then this temporary object is destroyed.
Delay its destruction until network_disconnected() since
network_connect_failed is called too early. Also, re-order the sequence
in station_reset_connection_state() in order to avoid using the network
object after it has been freed by network_disconnected().
Fixes: 85d9d6461f ("network: Hide hidden networks on connection error")
station_hide_network will remove and free the network object, so calling
network_close_settings will result in a crash. Make sure this is done
prior to network object's destruction.
Fixes: 85d9d6461f ("network: Hide hidden networks on connection error")
This only posed a problem oddly if the kernel binary was in the same
directory as test-runner. Resolving the absolute path with the
argument parser resolves the issue.
The TIOCSTTY ioctl was not shared between UML and QEMU which prevented
any console input from making it into UML. This fixes that, and now
ctrl-c can be used to stop UML test execution.
The MountInfo tuple was changed to explicitly take a source string. This
is redundant for UML and system mounts since the fstype/source are the same,
but it allows QEMU to specify the '9p' fstype and use MountInfo rather than
calling mount() explicitly.
This also moves logging cleanup into _prepare_mounts so both UML and QEMU
can use it.
Many processes are not long running (e.g. hostapd_cli, ip, iw, etc)
and the separators written to log files don't show up for these which
makes debugging difficult. This is even true for IWD/Hostapd for tests
with start_iwd=0.
After writing separators for long running processes write them out for
any additional log files too.
Way too many classes have a dependency on the TestContext class, in
most cases only for is_verbose. This patch removes the dependency from
Process and Namespace classes.
For Process, the test arguments can be parsed in the class itself which
will allow for this class to be completely isolated into its own file.
The Namespace class was already relatively isolated. Both were moved
into utils.py which makes 'run-tests' quite a bit nicer to look at and
more fitting to its name.
