Better share the same function for initializing control interface from
the two possible paths that can add a new interface to hostapd.
Signed-hostap: Jouni Malinen <j@w1.fi>
This is a per-BSS configuration parameter and as such, needs to be
configured to the driver from hostapd_setup_bss() instead of
hostapd_driver_init().
Signed-hostap: Jouni Malinen <j@w1.fi>
DFS operations are specific to the interface (radio/wiphy), not BSS
(netdev/vif), so hostapd_iface is the appropriate element to use in
them.
Signed-hostap: Jouni Malinen <j@w1.fi>
If per-BSS configuration enabling did not provide a phy name, iface->phy
was left empty. It can be helpful to set this up automatically, so fill
that when initializing the interface.
Signed-hostap: Jouni Malinen <j@w1.fi>
Only scan the affected channels instead of all enabled channels when
determining whether the primary and secondary channel for HT40 needs to
be swapped. This speed up HT40 setup considerably on 5 GHz band.
Signed-hostap: Jouni Malinen <j@w1.fi>
If hostapd is requested to set the country code and the previous country
code differs from the new one, the channel list information from the
driver may change. This change may not be instant, so wait for an
EVENT_CHANNEL_LIST_CHANGED event before continuing interface setup with
fetching of the channel list information. This fixes issues where the
selected channel is not available based on the previous regulatory data
and update through CRDA takes some time.
Signed-hostap: Jouni Malinen <j@w1.fi>
Channel determination may take considerable time when ACS or DFS is
used, so it is useful to be able to observe this process through the
control interface. Move the initialization of the control interfaces to
happen before channel determination so that this can be achieved.
Signed-hostap: Jouni Malinen <j@w1.fi>
Use hostapd_interface_init2() for all interfaces instead of the
previously used different paths for per-interface-config and
per-BSS-config cases. This moves the calls to hostapd_driver_init() and
hostapd_setup_interface() to happen after all configuration files have
been read.
Signed-hostap: Jouni Malinen <j@w1.fi>
Previously, ENABLE command ended up freeing the hostapd_iface context on
initialization failures, but did not even remove the interface from the
list of available interfaces. This resulted in use of freed memory with
any following operation on the same interface. In addition, removing the
interface on initialization failure does not seem like the best
approach. Fix both of these issues by leaving the interface instance in
memory, but in disabled state so that the configuration can be fixed and
ENABLE used again to enable the interface or REMOVE used to remove the
interface.
Signed-hostap: Jouni Malinen <j@w1.fi>
When removing and re-adding the first wlan# netdev to hostapd
dynamically, the netdev is already present and should not be removed and
re-added to maintain its state as not-added-by-hostapd so that it does
not get removed automatically.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The global control interface command "REMOVE <ifname>" can now be used
to remove a single virtual interface (BSS) without affecting other
virtual interfaces on the same radio.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The global control interface command "ADD
bss_config=<phyname>:<config file>" can now be used to add a single
virtual interface (BSS) to an interface.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This moves the vif added check from core hostapd to the driver wrapper
(only driver_nl80211.c uses this) and reorders operations a bit to allow
the first BSS (vif) to be removed from a multi-BSS setup.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Return control flow to hostapd by calling hostapd_acs_completed()
if requesting a scan from the underlying device fails.
Signed-hostapd: Helmut Schaa <helmut.schaa@googlemail.com>
If radar was detected single BSS is notified about it. This caused only
that single BSS to be stopped and restarted. However, due to nl80211
interface combinations the BSS was not started on a new channel and
other BSSes remained operating on the old channel.
The downside is that hostapd_disable_iface() causes deauth frames to be
sent. This is undesired but on the other hand it doesn't make sense to
create workarounds that imitate CSA's 'block tx'. For proper Tx
quiescing CSA should be properly implemented.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Decouple HT/VHT offset/center-freq calculations from channel lookup.
This will be necessary for further improvements on the DFS codebase.
Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
Reject RELOAD control interface command if the dynamic configuration
changes have resulted into a state where the configuration is invalid.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This allows the configuration validation routines to be called from
src/ap/*.c for runtime updates of configuration without reprocessing the
full configuration file.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This provides a new option for configuring multiple virtual interfaces
(BSS) that share a single radio. The new command line parameter
-b<phyname>:<config file name> is used to define one or more virtual
interfaces for each PHY. The first such entry for a new PHY is used to
initialize the interface structure and all consecutive parameters that
have the same PHY name will be added as virtual BSS entries to that
interface. The radio parameters in the configuration files have to be
identical.
This can be used as an alternative for the bss=<ifname> separator and
multiple BSSes in a single configuration file design while still
allowing hostapd to control the PHY (struct hostapd_iface) as a group of
virtual interfaces (struct hostapd_data) so that common radio operations
like OLBC detection and HT40 co-ex scans can be done only once per real
radio.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This makes it more convenient to move BSS configuration entries between
struct hostapd_config instances to clean up per-BSS configuration file
design.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This may be needed if the wpa_psk information for previously derived
from passphrase and either the SSID or the passphrase has changed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Instead of duplicating the functionality and missing changes (like the
hostapd_broadcast_wep_clear() call), use the hostapd_clear_old()
function that was already used for the similar case with configuration
file reload.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Mask the remote VHT capabilities with our own capabilities, similarly
to what is done for HT capabilities.
Signed-hostap: Eliad Peller <eliadx.peller@intel.com>
Make sure the driver supports 160/80+80 MHz VHT capabilities
before trying to configure these channels.
Signed-hostap: Eliad Peller <eliadx.peller@intel.com>
When we have CAC active and receive a radar event, we should ignore
CAC_ABORT event and handle channel switch in the radar event handler.
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
This fixes a problem when operating on non-DFS channel and receiving a
radar event for that channel. Previously, we would have decided to
switch channels.
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Add a table of available VHT80 channels. This table contains the first
available channel. We will also choose this first channel as the control
one.
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Some driver wrappers may implement this by writing eight octets even
though IPN is only six octets. Use a separate WPA_KEY_RSC_LEN (8) octet
buffer in the call to make sure there is enough buffer room available
for the full returned value and then copy it to IPN field.
The previous implementation used the following igtk field as the extra
buffer and then initialized that field afterwards, so this change does
not fix any real issue in behavior, but it is cleaner to use an explicit
buffer of the maximum length for get_seqnum().
Signed-hostap: Jouni Malinen <j@w1.fi>
The VHT_CHANWIDTH_160MHZ case fell through to the default case and
printed out a debug message that was not supposed to be shown here.
Signed-hostap: Jouni Malinen <j@w1.fi>
Previously ACS required valid survey data on all available channels.
This can however not be guaranteed. Instead of just failing, fall back
to the subset of channels that have valid ACS data.
Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
Otherwise hostapd might hang doing nothing anymore. Propagate ACS
errors so we can fail gracefully.
Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
If ACS fails we still need to call hostapd_setup_interface_complete.
Otherwise hostapd will just hang doing nothing anymore. However, pass
an error to hostapd_setup_interface_complete to allow a graceful fail.
Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
The new bss_load_test parameter can be used to configure hostapd to
advertise a fixed BSS Load element in Beacon and Probe Response frames
for testing purposes. This functionality is disabled in the build by
default and can be enabled with CONFIG_TESTING_OPTIONS=y.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This allows QoS Map Set element to be added to (Re)Association Response
frames and in QoS Map Configure frame. The QoS Mapping parameters are
also made available for the driver interface.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Add DFS structures/events handlers, CAC handling, and radar detection.
By default, after radar is detected or the channel became unavailable, a
random channel will be chosen.
This patches are based on the original work by Boris Presman and
Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h
files.
Cc: Boris Presman <boris.presman@ti.com>
Cc: Victor Goldenshtein <victorg@ti.com>
Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
When hostapd receives an auth frame during ACS the transmission of
the according auth response will always fail:
ACS: Automatic channel selection started, this may take a bit
[..]
send_auth_reply: send: Resource temporarily unavailable
[..]
However, a station info entry was created. Once ACS is finished
it will flush all stations even though hapd was not yet fully
initialized. This results in a segfault when trying to access
hapd->radius:
0 0x0042c1c0 in radius_client_flush_auth ()
1 0x00416a94 in ap_free_sta ()
2 0x00416cc0 in hostapd_free_stas ()
3 0x0040bce8 in hostapd_flush_old_stations ()
4 0x0040c790 in hostapd_setup_interface_complete ()
5 0x0046347c in acs_scan_complete ()
6 0x0040f834 in hostapd_wpa_event ()
7 0x0043af08 in send_scan_event.part.46 ()
8 0x00443a64 in send_scan_event ()
9 0x00443c24 in do_process_drv_event ()
10 0x004449e8 in process_global_event ()
11 0x7767d7d0 in ?? ()
Fix this by not presuming anything about the initialization state of
hapd and checking ->radius before accessing.
Signed-off-hostapd: Helmut Schaa <helmut.schaa@googlemail.com>
There is no need to use the bss variable which is used only within a
wpa_printf() call that can be conditionally removed from the build.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This extends hostapd global control interface command "ADD" to use a
configuration file instead of requiring configuration to be built using
SET command.
The command format is now following:
ADD <ifname> <control path|config=<path to config>>
For example:
ADD wlan0 /var/run/hostapd
ADD wlan0 config=/tmp/hostapd.conf
When using the configuration file option, ctrl_interface parameter in
the file needs to be set to allow ENABLE command to be issued on the new
interface.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There was a comment about the the cleanup steps being from
hostapd_cleanup_iface(). However, the operations that cleared some
security parameters do not seem to exist elsewhere and do not make sense
here. Remove them to avoid changing configuration with DISABLE followed
by ENABLE.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This fixes some issues where dynamic interface enable/disable cycles
could end up trying to free resources twice and crash the process while
doing so.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new control interface command P2P_REMOVE_CLIENT <P2P Device
Address|iface=Address> can now be used to remove the specified client
from all groups (ongoing and persistent) in which the local device is a
GO. This will remove any per-client PSK entries and deauthenticate the
device.
Signed-hostap: Jouni Malinen <j@w1.fi>
Record all generated per-client PSKs in the persistent group network
block and configure these for the GO Authenticator whenever re-starting
the persistent group. This completes per-client PSK support for
persistent groups.
Signed-hostap: Jouni Malinen <j@w1.fi>
When using per-device PSKs, select the PSK based on the P2P Device
Address of the connecting client if that client is a P2P Device. This
allows the P2P Interface Address to be changed between P2P group
connections which may happen especially when using persistent groups.
Signed-hostap: Jouni Malinen <j@w1.fi>
This can be used to implement per-device PSK selection based on the
peer's P2P Device Address instead of P2P Interface Address.
Signed-hostap: Jouni Malinen <j@w1.fi>
This makes the P2P Device Address of the Enrollee available with the PSK
records to allow P2P Device Address instead of P2P Interface Address to
be used for finding the correct PSK.
Signed-hostap: Jouni Malinen <j@w1.fi>
"wpa_cli p2p_set per_sta_psk <0/1>" can now be used to disable/enable
use of per-device PSKs in P2P groups. This is disabled by default.
When enabled, a default passphrase is still generated by the GO for
legacy stations, but all P2P and non-P2P devices using WPS will get
a unique PSK.
This gives more protection for the P2P group by preventing clients from
being able to derive the unicast keys used by other clients. This is
also a step towards allowing specific clients to be removed from a group
reliably without having to tear down the full group to do so.
Signed-hostap: Jouni Malinen <j@w1.fi>
This adds ACS support to hostapd. Currently only survey-based
algorithm is available.
To use ACS you need to enable CONFIG_ACS=y in .config and use
channel=0 (or channel=acs_survey) in hostapd.conf.
For more details see wiki page [1] or comments in src/ap/acs.c.
[1]: http://wireless.kernel.org/en/users/Documentation/acs
Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
This adds survey dump support for all frequencies
and for specific desired frequencies. This will later
be used by ACS code for spectrum heuristics.
Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
This splits up the channel checking upon initialization into a few
helpers. This should make this a bit easier to follow. This also paves
the way for some initial ACS entry code.
Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
According to WSC specification (Ver 2.0.2, section 8.3), RF Bands
attribute should be set to the specific RF band used for the current
message. Add an option to set wanted band in wps_build_rf_bands() and
add a callback to get the current band from wpa_supplicant and hostapd.
Signed-hostap: David Spinadel <david.spinadel@intel.com>
The pad field in the RRB messages is unused, but it should be
initialized to avoid sending out arbitrary data from stack. This was
also generating number of valgrind complaints about uninitialized memory
accesses in local FT tests.
Signed-hostap: Jouni Malinen <j@w1.fi>
The static WEP keys have to be configured for the new VLAN
interface that is created for a 4addr WDS peer, not doing so
breaks WEP functionality in nl80211/4addr based WDS links.
Signed-hostap: Sujith Manoharan <c_manoha@qca.qualcomm.com>
In a AP/STA concurrent setup, if the STA interface is continually
scanning, trying to connect to a network, the AP interface
is basically broken since beaconing would be erratic.
This option can be used in a WDS setup where one AP acts as a
Client/AP-Repeater. The Repeater AP interface has to start beaconing
only after the Client interface has established a WDS link with the
"Root AP".
Signed-hostap: Sujith Manoharan <c_manoha@qca.qualcomm.com>
The new server_id parameter in hostapd.conf can now be used to specify
which identity is delivered to the EAP peer with EAP methods that
support authenticated server identity.
Signed-hostap: Jouni Malinen <j@w1.fi>
When using OpenSSL with TLS-based EAP methods, wpa_supplicant can now be
configured to use OCSP stapling (TLS certificate status request) with
ocsp=1 network block parameter. ocsp=2 can be used to require valid OCSP
response before connection is allowed to continue.
hostapd as EAP server can be configured to return cached OCSP response
using the new ocsp_stapling_response parameter and an external mechanism
for updating the response data (e.g., "openssl ocsp ..." command).
This allows wpa_supplicant to verify that the server certificate has not
been revoked as part of the EAP-TLS/PEAP/TTLS/FAST handshake before
actual data connection has been established (i.e., when a CRL could not
be fetched even if a distribution point were specified).
Signed-hostap: Jouni Malinen <j@w1.fi>
Currently, hostapd_get_vlan_id_ifname() is used to determine if a given
vlan is valid *and* to actually determine the interface. This leads to
wpa_set_keys() sometimes setting the key on the wildcard interface name,
which does not make sense.
This patch therefore adds hostapd_vlan_id_valid() and makes
hostapd_get_vlan_id_ifname() not return a wildcard interface.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
Currently, struct hostapd_vlan is a per-BSS data structure which
also contains informations about whether to remove the bridge
or clear wlan / tagged-vlan interface from the bridge.
In a multi-interface multi-BSS setup, this can lead to the following
race condition:
1. wlan0 creates VLAN A, sets DVLAN_CLEAN_BR and DVLAN_CLEAN_VLAN_PORT
2. wlan1 creates VLAN A, does not set DVLAN_CLEAN_BR and
DVLAN_CLEAN_VLAN_PORT as already there
3. wlan0 removes VLAN A, removes tagged-interface from the bridge
but not the bridge.
Now wlan1 VLAN A is unusable due to the missing uplink.
4. wlan1 removes VLAN A, does not cleanup
Solution:
This requires an inter-BSS inter-interface data structure to track the
bridge / bridge port usage within hostapd. This data structure could
also be used to track any other device-has-been-created-by-hostapd
information or when regarding interface freeing.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
Currently by default, all BSS share the bridge brvlan%d.
While this is sane when no tagged-interface is given, this
is insane when different tagged interfaces are given, as
it would result in bridging those tagged interfaces.
This patch therefore uses br%s%d with %s=tagged_interface
and %d=VLAN ID as bridge name when a tagged-interface is given.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
Currently, when different BSS using different tagged vlan
interfaces, they are forced to share the bridge brvlan#,
which is not desirable.
This patch fixes this by making the bridge name configurable.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
If AP mode SME/MLME within wpa_supplicant is used for processing Probe
Request frames in GO mode, drop Probe Request frames that include only
802.11b rates per P2P spec section 2.4.1.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Upon association, disable the timer that removes the dummy STA. This
timer caused the STA that associates within 5 seconds of doing an ANQP
query to disassociate, thinking it's a dummy STA. Similar call was
already there for the SME/MLME-in-hostapd case in handle_auth(), but the
SME-in-driver case was not previously addressed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This cleans up debug log by not including comments about failed
operations in case the operation is known to fail due to not being
supported by the driver.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Enable MAC address based ACL for the drivers which advertise
this capabilty with NL80211_ATTR_MAC_ACL_MAX. Either of blacklist
or whitelist is supported, though, not simultaneously.
Signed-hostap: Vivek Natarajan <nataraja@qca.qualcomm.com>
This is needed to avoid allowing the STA to reconnect using a cached
PMKSA. ESS disassoc imminent notification is normally used to indicate
that the STA session will be terminated and as such, requiring full
authentication through the authentication server after this is needed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The hostapd_cli ess_disassoc command now takes three arguments (STA MAC
address, timeout in ms, URL) and the STA is disconnected after the
specified timeout.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
These events are sent as a special case to both the group interface and
"parent interface" (i.e., the interface that was used for managing P2P
negotiation). The latter is not really correct event, so get rid of it
with the new global control interface design where there is no need to
support legacy upper layer implementations.
Signed-hostap: Jouni Malinen <j@w1.fi>
This patch is based on the original work by Boris Presman and
Victor Goldenshtein. Channel Switch Announcement support has been
removed and event handling as well as channel set handling was
changed, among various other changes.
Cc: Boris Presman <boris.presman@ti.com>
Cc: Victor Goldenshtein <victorg@ti.com>
Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Since "pairwise" is defined as an integer, the current assignment leads
to it having the value 0 or 8, which is a bit strange in debug output:
WPA: Send EAPOL(version=2 secure=1 mic=1 ack=1 install=1 pairwise=8
kde_len=46 keyidx=2 encr=1)
Use !!(...) to normalize it to 0 or 1.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
For some testing it can be useful to force the Key MIC in group
EAPOL-Key frames to be corrupt. Add an option to allow setting a
probability for corrupting the Key MIC and use it in the WPA code,
increasing the first byte of the MIC by one to corrupt it if desired.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
There are quite a few places in the current implementation where a nul
terminated string is generated from binary data. Add a helper function
to simplify the code a bit.
Signed-hostap: Jouni Malinen <j@w1.fi>
My APs generate their configuration on their own using a different
number of (vlan-enabled) bss. Currently, all my vlan_file files consist
of a single line: the wildcard line. Configuration file generation would
be easier, if the hostapd configuration file would not depend on those
simple vlan_file files.
This patch removes the need for those one-line files by using the
<device>.<vlan> naming scheme if no vlan_file is given (or that file is
empty). This should not break any existing setup, as using dynamic_vlan
with no vlan configured does not make sense anyway.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
In order to test clients in scenarios where APs may (randomly)
drop certain management frames, introduce some testing options
into the hostapd configuration that can make it ignore certain
frames. For now, these are probe requests, authentication and
(re)association frames.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
Some extended capabilities (I'm currently interested in "Operating Mode
Notification" for VHT) are implemented by the kernel driver and exported
in nl80211. Use these in hostapd/wpa_supplicant.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
The new wps_independent=1 configuration parameter can be used to remove
interfaces from the shared hostapd process WPS control (i.e., to apply
WPS operations only to a subset of interfaces instead of all).
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows WPS to update AP configuration in the case no hostapd
configuration file is used (i.e., dynamic configuration through the
control interface).
Signed-hostap: Jouni Malinen <j@w1.fi>
When the OS is out of random bytes in SM_STATE(WPA_PTK, AUTHENTICATION2)
in ap/wpa_auth.c, hostapd sends the sm to state DISCONNECT without
clearing ReAuthenticationRequest, resulting in an infinite loop.
Clearing sm->ReAuthenticationRequest using gdb fixes the running hostapd
instance for me. Also sm->Disconnect = TRUE should be used instead of
wpa_sta_disconnect() to make sure that the incomplete ANonce does not
get used.
Fix this issue by resetting sm->ReAuthenticationRequest even if the STA
gets disconnected and use sm->Disconnect instead of
wpa_sta_disconnect().
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
A non-HT capable AP on any channel could have triggered us to enable
protection regardless of own operating channel if the driver delivered
Beacon frames from other channels. The channel detection in ap_list is
not exactly ideal, but most cases can be handled by checking ap->channel
against the currently configured channel (or secondary channel in case
of HT40).
Signed-hostap: Jouni Malinen <j@w1.fi>
This iter_next/iter_prev pointers were not really used for anything, so
get rid of the unnecessary complexity in the AP list maintenance.
Signed-hostap: Jouni Malinen <j@w1.fi>
The new -G<group> command line argument can now be used to set the group
for the control interfaces to enable cases where hostapd is used without
a configuration file and the controlling program is not running with
root user privileges.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit b52f084cfa introduced a mechanism
for adding arbitrary vendor-specific elements into the Beacon and Probe
Response frames. However, this information was not added to the separate
buffers used for specifying Beacon and Probe Response IEs for drivers
that build the frames internally. Add vendor_elements to these values,
too, to support such drivers in addition to drivers that use the full
Beacon tail/head buffers.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Clear WLAN_STA_ASSOC_REQ_OK, otherwise no Class 3 frame will be sent to
the disconnected STA in response to data frames.
Signed-hostap: Felix Fietkau <nbd@openwrt.org>
The VHT IE struct just has an opaque 8-byte array for the MCS
set, make it more expressive by explicitly naming the pieces.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
WSC specification 2.0 section 7.4 describes OOB password to be expressed
in ASCII format (upper case hexdump) instead of raw binary.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 2d9ffe1e85 broke GAS server
callback for receiving Public Action frames. The incorrect context
pointer was used in the public_action_cb2 case. Fix this to use the
correct context pointer.
Signed-hostap: Jouni Malinen <j@w1.fi>
"WPS_NFC_TOKEN <WPS/NDEF>" used to generate a new NFC password token
regardless of whether there was a pre-configured token in the
configuration. Change this to use the pre-configured value, if
available, instead. This allows the same command to be used to write the
password token to an NFC tag more conveniently.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Control interface command "NFC_GET_HANDOVER_SEL NDEF WPS-CR" can now be
used to fetch WPS carrier record from hostapd.
Signed-hostap: Jouni Malinen <j@w1.fi>
The capability itself isn't really affected by an OBSS
scan, only the HT operation must then be restricted to
20 MHz. Change this, and therefore use the secondary
channel configuration to determine the setting of the
OP_MODE_20MHZ_HT_STA_ASSOCED flag.
This shouldn't really change anything functionally,
it just makes the code a little less confusing and
is also needed to implement more dynamic bandwidth
changes if ever desired.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
When AP mode operation reject the client, nl80211 layer advertises the
connect failed event with the reason for failures (for example, max
client reached, etc.) using NL80211_CMD_CONN_FAILED.
This patch adds some debug messages whenever such an event is received
from the nl80211 layer and also the same event is posted to the upper
layer via wpa_msg().
Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
GAS server used the same public_action_cb mechanism as P2P to process
Action frames. This ended up overriding P2P processing of Action frames
while running an AP/GO interface with a build that enables Interworking
(e.g., for Hotspot 2.0) and a driver that uses hostapd for AP mode
SME/MLME. Fix this by adding a separate callback registration for the
GAS server. This should really be cleaned up by supporting arbitrary
number of callback handlers, but for now, this addresses the regression
with a minimal change.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Most of the variables are not needed anymore once the SAE instance
has entered Accepted state. Free these to save memory.
Signed-hostap: Jouni Malinen <j@w1.fi>
The optional "reason=<reason code>" parameter to the ctrl_iface
deauthenticate and disassociate commands can now be used to change the
reason code used in the disconnection frame. This can be used, e.g., by
P2P GO to disconnect a single P2P client from the group by sending it an
indication of the group getting terminated (Deauthentication frame with
reason code 3). It needs to be noted that the peer device is still in
possession on the PSK, so it can still reconnect to the group after this
if it does not follow the group termination indication.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Use of two variables to track bounds checking seems to be a bit too much
for some static analyzers, so add an extra condition for buffer padding
to avoid incorrect warnings.
Signed-hostap: Jouni Malinen <j@w1.fi>
The code initializing GMK Counter uses the group pointer value as extra
entropy and to distinguish different group instances. Some static
analyzers complain about the sizeof(pointer) with memcpy, so use a more
explicit type casting to make it more obvious what the code is doing.
Signed-hostap: Jouni Malinen <j@w1.fi>
hostapd.conf sae_groups parameter can now be used to limit the set of
groups that the AP allows for SAE. Similarly, sae_groups parameter is
wpa_supplicant.conf can be used to set the preferred order of groups. By
default, all implemented groups are enabled.
Signed-hostap: Jouni Malinen <j@w1.fi>
hostapd can now be configured to use anti-clogging mechanism based on
the new sae_anti_clogging_threshold parameter (which is
dot11RSNASAEAntiCloggingThreshold in the standard). The token is
generated using a temporary key and the peer station's MAC address.
wpa_supplicant will re-try SAE authentication with the token included if
commit message is rejected with a token request.
Signed-hostap: Jouni Malinen <j@w1.fi>
The enum values for struct sae_data::state now match the protocol
instance states as defined in IEEE Std 802.11-2012, 11.3.8.2.2
Signed-hostap: Jouni Malinen <j@w1.fi>
The PMKSA cache expiration timer was not actually ever initialized since
the only place for registering the timeout was in the timeout handler.
Fix this by initializing the timer whenever a new PMKSA cache entry is
added to the beginning of the list (i.e., when it was the first entry or
expires before the entry that was previously going to expire first).
[Bug 393]
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 4378fc14eb started using QoS Data
frames for QoS STAs. It used the correct flags value for WPA/RSN
EAPOL-Key frames, but wrong flags for IEEE 802.1X EAPOL frames. The
WPA_STA_WMM value used in driver_nl80211.c happens to be identical to
WLAN_STA_ASSOC in sta->flags and this makes driver_nl80211.c try to use
QoS header for all STAs. Fix this by properly converting the flags from
WLAN_STA_* to WPA_STA_*. [Bug 426]
Signed-hostap: Jouni Malinen <j@w1.fi>
Add some more functionality for BSS Transition Management:
- advertise support for BSS Transition Management in extended
capabilities element
- add hostapd.conf parameter bss_transition=1 for enabling support
for BSS Transition Management
- add "hostapd_cli disassoc_imminent <STA> <num TBTTs>" for sending
disassociation imminent notifications for testing purposes
- wpa_supplicant: trigger a new scan to find another BSS if the
current AP indicates disassociation imminent (TODO: the old AP needs
to be marked to use lower priority to avoid re-selecting it)
Signed-hostap: Jouni Malinen <j@w1.fi>
This optional attribute may make it easier to bind together the
Access-Request and Accounting-Request messages. The accounting session
identifier is now generated when the STA associates instead of waiting
for the actual session to start after successfull authentication.
Signed-hostap: Jouni Malinen <j@w1.fi>
Basic support for the 60 GHz band. Neither P2P nor WPS are yet taken
care off. Allows to start AP with very simple config:
network={
ssid="test"
mode=2
frequency=60480
key_mgmt=NONE
}
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The config says that the default for ap_table_max_size is 255 and the
default for ap_table_expiration_time is 60. But the code doesn't reflect
the default values mentioned in the sample config file.
These variables completely disable the code for Overlapping Legacy BSS
Condition by default when they are not correctly initialized. WFA
certification requires this feature and therefore an AP would have
failed the certification process unless they were initialized manually
using the configuration file.
Signed-hostap: Sven Eckelmann <sven@open-mesh.com>
Signed-hostap: Simon Wunderlich <simon@open-mesh.com>
If separate hostapd processes are used for different RF bands, the
dualband parameter for WPS was not set correctly. Allow dualband
indication (mainly, addition of RF bands attribute for PBC session
overlap detection) also based on wps_rf_bands value (if set to "ag").
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows Probe Request frame processing to compare the configured
SSID to the SSID List element in addition to the SSID element.
Signed-hostap: Jouni Malinen <j@w1.fi>
Replace CONFIG_IEEE80211V with CONFIG_WNM to get more consistent build
options for WNM-Sleep Mode operations. Previously it was possible to
define CONFIG_IEEE80211V without CONFIG_WNM which would break the build.
In addition, IEEE 802.11v has been merged into IEEE Std 802.11-2012 and
WNM is a better term to use for this new functionality anyway.
Signed-hostap: Jouni Malinen <j@w1.fi>
pmksa_cache_free_entry() takes care of updated the list head pointer
(pmksa->pmksa), so no need to do this change in the caller.
Signed-hostap: Jouni Malinen <j@w1.fi>
Use the shared_secret pointer from RADIUS client implementation instead
of getting this from hostapd configuration data.
Signed-hostap: Jouni Malinen <j@w1.fi>
This adds support for multiple PSKs per station when using a RADIUS
authentication server to fetch the PSKs during MAC address
authentication step. This can be useful if multiple users share a
device but each user has his or her own private passphrase.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
Add the configuration option vht_oper_centr_freq_seg1_idx
for the second segment of an 80+80 MHz channel and use it
when building the VHT operation IE.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
This allows the AP to figure out whether a station is a HS 2.0 STA
during the association and access any information that the STA may have
included in this element.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
CONFIG_SQLITE=y option can now be used to allow the eap_user_file text
file to be replaced with a SQLite database
(eap_user_file=sqlite:/path/to/sqlite.db). hostapd.eap_user_sqlite
shows an example of how the database tables can be created for this
purpose. This commit does not yet include full functionality of the
text file format, but at least basic EAP-TTLS/MSCHAPv2 style
authentication mechanisms with plaintext passwords can be used for
tests.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 296a34f0c1 changed hostapd to
remove the internal STA entry at the beginning of TKIP countermeasures.
However, this did not take into account the case where this is triggered
by an EAPOL-Key error report from a station. In such a case, WPA
authenticator state machine may continue processing after having
processed the error report. This could result in use of freed memory.
Fix this by stopping WPA processing if the STA entry got removed.
Signed-hostap: Jouni Malinen <j@w1.fi>
There is no point in the hapd_iface == NULL validate after this pointer
has been dereferences, so move the code dereferencing hapd_iface after
the check.
Signed-hostap: Jouni Malinen <j@w1.fi>
The UFD (USB flash drive) configuration method was deprecated in WSC
2.0. Since this is not known to be used, remove the UFD implementation
from hostapd and wpa_supplicant to allow the WPS implementation to be
cleaned up. This removes the now unused OOB operations and ctrl_iface
commands that had already been deprecated by the new NFC operations.
Signed-hostap: Jouni Malinen <j@w1.fi>
The old WPS interface for using NFC has no known deployments and even
the binary libraries referenced here are not easily available anymore.
Since the new interface for using NFC with WPS covers the same
functionality, remove the old implementation to clean up WPS
implementation.
Signed-hostap: Jouni Malinen <j@w1.fi>
There was an issue with EAPOL frame exchanges in a multi-BSS
configuration when a station switches between the BSSes controlled by
the same hostapd process. When processing the EAPOL packet, the array of
virtual APs (iface->bss) is searched looking for the station that sent
the packet in order to identify which signal context should be used
during processing. The first match of the station in its list gets used
in the ieee802_1x_receive() function. However, even after a station has
disassociated, it remains in the list of stations pending an inactivity
timeout. This leads to the wrong hapd context (one where the station had
already disassociated) being used in some cases (if the current/active
bss entry appears in the list after one where the station has just
disassociated from) for EAPOL processing.
Fix this by checking the WLAN_STA_ASSOC flag before assuming the right
hapd context was found for the given station.
Signed-hostap: David Bird <dbird@powercloudsystems.com>
intended-for: hostap-1
This replaces the previously used bogus test data in SAE messages with
the first real field. The actual SAE authentication mechanism is still
missing and the Scaler, Element, and Confirm fields are not included.
Signed-hostap: Jouni Malinen <j@w1.fi>
This introduces new AKM for SAE and FT-SAE and adds the initial parts
for going through the SAE Authentication frame exchange. The actual SAE
algorithm and new fields in Authentication frames are not yet included
in this commit and will be added separately. This version is able to
complete a dummy authentication with the correct authentication
algorithm and transaction values to allow cfg80211/mac80211 drivers to
be tested (all the missing parts can be handled with
hostapd/wpa_supplicant changes).
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows hostapd_cli and wpa_cli all_sta command to be used to
display connected time (in seconds) of each station in AP mode.
Signed-hostap: Raja Mani <rmani@qca.qualcomm.com>
As long as WLAN_STA_ASSOC_REQ_OK is set in sta->flags, Class 3 frames do
not trigger a disassoc/deauth. If it is still set even after the assoc
response tx has already failed, it may take somewhat longer for clients
to realize that the connection wasn't fully established.
Signed-hostap: Felix Fietkau <nbd@openwrt.org>
The conf doesn't contain any basic rates in some cases. Most notably,
when starting a P2P GO in 5 GHz. Use the iface rates which are
initialized in hostapd_prepare_rates() to the conf rates or set to
default values if no conf values exist. This fixes a bug introduced in
commit e5693c4775.
Signed-hostap: Arik Nemtsov <arik@wizery.com>
Commit e5693c4775 added a copy of the
determined basic rate set into struct hostapd_iface, but did not
actually copy the terminating -1 value. This could be problematic if
something were to actually try to use this list since would be no way to
know what is the last entry in the list. Fix this by copying the
terminating value.
Signed-hostap: Jouni Malinen <j@w1.fi>
Try to share most of the cipher information like key and RSC lengths and
suite selector conversions, etc. in wpa_common.c to avoid having similar
code throughout the WPA implementation for handling cipher specific
behavior.
Signed-hostap: Jouni Malinen <j@w1.fi>
This commit adds control interface commands and internal storage of
Wi-Fi Display related configuration. In addition, WFD IE is now added
to various P2P frames, Probe Request/Response, and (Re)Association
Request/Response frames. WFD subelements from peers are stored in the
P2P peer table.
Following control interface commands are now available:
SET wifi_display <0/1>
GET wifi_display
WFD_SUBELEM_SET <subelem> [hexdump of length+body]
WFD_SUBELEM_GET <subelem>
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This allows both hostapd and wpa_supplicant to be used to derive and
configure keys for GCMP. This is quite similar to CCMP key
configuration, but a different cipher suite and somewhat different rules
are used in cipher selection. It should be noted that GCMP is not
included in default parameters at least for now, so explicit
pairwise/group configuration is needed to enable it. This may change in
the future to allow GCMP to be selected automatically in cases where
CCMP could have been used.
This commit does not included changes to WPS or P2P to allow GCMP to be
used.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new vendor_elements parameter in hostapd.conf can be used to add new
vendor specific element(s) into Beacon and Probe Response frames.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Replace the Venue Name specific data structure and parser with a
generic mechanism that can be used with other fields that use the
same format.
Signed-hostap: Jouni Malinen <j@w1.fi>
The anqp_3gpp_cell_net parameter can be used to configure hostapd
to advertise 3GPP Cellular Network ANQP information.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
These function pointers are going to be the same for each interface so
there is no need to keep them in struct hostapd_iface. Moving them to
struct hapd_interfaces makes it easier to add interfaces at run time.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit bfc62fe133 moved the code that
using crypto/random.h, but forgot to remove the inclusion of that header
file.
Signed-hostap: Jouni Malinen <j@w1.fi>
All the other places processing EVENT_RX_MGMT events assume that the
event data is included, so not much point in verifying that here.
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows User-Name and Chargeable-User-Identity attributes to be
passed from Access-Accept into Accounting messages even when IEEE 802.1X
is not used.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
There is no need to mandate admission control (ACM=1) by default, so
clear that flag in the case the configuration file does not specify
wmm_ac_{vo,vi}_acm value. This gets closer to the values mentioned
in the sample hostapd.conf file and reduces the need to specify WMM
parameters in the configuration file for most common use cases.
Signed-hostap: Jouni Malinen <j@w1.fi>
The commit b5fd8b1833
"VHT: Do not allow use of TKIP with VHT" introduced
an off-by-one regression: a WPA/RSN 11n AP would no
longer accept stations to connect, instead it would
produce a bogus error message:
... Station tried to use TKIP with HT association.
Signed-hostapd: Christian Lamparter <chunkeey@googlemail.com>
When using multiple VLANs, GKeyDoneStations counter is not updated
properly since wpa_auth_for_each_sta() call in wpa_group_setkeys() ends
up iterating through all STAs and not just the STAs of a specific
wpa_group (VLAN). Consequently, GTK rekeying gets initialized multiple
times if more than a single group state machine exists. Fix this by
iterating only through the STAs in the specific wpa_group.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
intended-for: hostap-1
CONFIG_VLAN_NETLINK=y build option can now be used to replace the
ioctl()-based interface for creating and removing VLAN interfaces
with netlink-based interface.
Signed-hostap: M. Braun <michael-dev@fami-braun.de>
This simplifies the implementation by using the buffer type to which the
returned data will be converted anyway. This avoids one memory
allocation for each processed RADIUS message.
Signed-hostap: Jouni Malinen <j@w1.fi>
The new ssid2 parameter can be used as an alternative mechanism for
configuring SSID for hostapd. It uses the same formats that
wpa_supplicant uses in the configuration file for strings.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 05ab9712b9 added support for
fetching WPA PSK from an external RADIUS server and changed
hostapd_wpa_auth_get_psk() to always return the RADIUS supplied PSK (if
set) and ignore the prev_psk parameter for iteration. Fix this by
appending the RADIUS supplied PSK to the list iterated by
hostapd_get_psk and thus returning NULL when prev_psk == sta->psk
(RADIUS).
Signed-hostap: M. Braun <michael-dev@fami-braun.de>
This allows the SA Query mechanism in hostapd to be used with drivers
that implement authentication and association MLME/SME.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
disable_dgaf=1 in hostapd.conf can now be used to disable downstream
group-addressed forwarding (DGAF). In this configuration, a unique
GTK (and IGTK) is provided to each STA in the BSS to make sure the
keys do not match and no STA can forge group-addressed frames.
An additional mechanism in the AP needs to be provided to handle some
group-addressed frames, e.g., by converting DHCP packets to unicast
IEEE 802.11 frames regardless of their destination IP address and by
providing Proxy ARP functionality.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 1b487b8b1e added CH_SWITCH
event for nl80211, but ended up using hostapd_hw_get_channel()
regardless of build configuration for driver interfaces. This
function is not always available, so make its use conditional
on NEED_AP_MLME.
Signed-hostap: Jouni Malinen <j@w1.fi>
os_random() may not be seeded properly, so use stronger mechanism for
generating the password id for NFC password tokens.
Signed-hostap: Jouni Malinen <j@w1.fi>
The new hostapd ctrl_iface command WPS_NFC_TOKEN can now be used to
manage AP-as-Enrollee operations with NFC password token. WPS/NDEF
parameters to this command can be used to generate a new NFC password
token. enable/disable parameters can be used to enable/disable use of
NFC password token (instead of AP PIN) for external Registrars.
A preconfigured NFS password token can be used by providing its
parameters with new hostapd.conf fields wps_nfc_dev_pw_id,
wps_nfc_dh_pubkey, wps_nfc_dh_privkey, and wps_nfc_dev_pw. This use
will also depend on WPS_NFC_TOKEN enable/disable commands, i.e., the
configured NFS password token is disabled by default.
Signed-hostap: Jouni Malinen <j@w1.fi>
The new hostapd ctrl_iface command WPS_NFC_CONFIG_TOKEN can now be used
to fetch payload for an NFC configuration token so that an external
program can be used to write this on an NFC tag.
Signed-hostap: Jouni Malinen <j@w1.fi>
hostapd ctrl_iface can now be used to deliver payload from read
operation of an NFC tag. This allows operations without having to have
low-level NFC code within hostapd. For now, the new wps_nfc_tag_read
command can be used with NFC password tokens for the case where the AP
has an NFC device that is used to read an NFC tag from the station
Enrollee.
Signed-hostap: Jouni Malinen <j@w1.fi>
Some drivers may independently decide to switch channels. Handle this by
updating the hostapd and wpa_supplicant AP and GO configuration.
Signed-hostap: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Previously, the STA entry was removed only from the driver and the STA
entry within hostapd was just marked disassociated. However, this left
the WPA authenticator state machine with an entry and the session was
not terminated properly. In addition, the STA entry could have remaining
indefinitely if the STA did not reconnect after TKIP countermeasures.
Fix this by removing the STA entry from hostapd instead of just leaving
it disassociated.
Signed-hostap: Jouni Malinen <j@w1.fi>
Maintain a copy of Chargeable-User-Identity in the PMKSA cache to allow
it to be included in accounting messages even if full authentication was
not completed.
Signed-hostap: Jouni Malinen <j@w1.fi>
Calling-Station-Id, Acct-Session-Id, and User-Name attributes in a
Disconnect-Request message can now be used to indicate which station is
to be disconnected.
Signed-hostap: Jouni Malinen <j@w1.fi>
DAS will now validate Event-Timestamp value to be within an acceptable
time window (300 seconds by default; can be set using
radius_das_time_window parameter). In addition, Event-Timestamp can be
required in Disconnect-Request and CoA-Request messages with
radius_das_require_event_timestamp=1.
Signed-hostap: Jouni Malinen <j@w1.fi>
Currently, FullMAC Persistent GO can't use p2p_client_list because its
own hapd->p2p_group is NULL at ap_sta_set_authorized(). This patch
changes the processing to use sta->p2p_ie instead of
p2p_group_get_dev_addr() on FullMAC GO.
Signed-hostap: Masashi Honma <masashi.honma@gmail.com>
When hostapd (or wpa_supplicant AP mode) limits the maximum number
of STA entries with a driver that implements SME, the driver needs
to be notified of the failed STA addition. Disassociate the STA if
the driver notifies of an association that would go beyond the
maximum number of STAs.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If WNM is enabled for the build (CONFIG_WNM=y), add BSS max idle period
information to the (Re)Association Response frame from the AP and parse
this information on the station. For SME-in-wpa_supplicant case, add a
timer to handle periodic transmission of the keep-alive frame. The
actual request for the driver to transmit a frame is not yet
implemented.
Signed-hostap: Jouni Malinen <j@w1.fi>
This adds the basic DAS mechanism to enable hostapd to be configured
to request dynamic authorization requests (Disconnect-Request and
CoA-Request). This commit does not add actual processing of the
requests, i.e., this will only receive and authenticate the requests
and NAK them regardless of what operation is requested.
Signed-hostap: Jouni Malinen <j@w1.fi>
New configuration parameters radius_auth_req_attr and
radius_acct_req_attr can now be used to add (or override) RADIUS
attributes in Access-Request and Accounting-Request packets.
Signed-hostap: Jouni Malinen <j@w1.fi>
radius_request_cui=1 configuration parameter can now be used to
configure hostapd to request CUI from the RADIUS server by including
Chargeable-User-Identity attribute into Access-Request packets.
Signed-hostap: Jouni Malinen <j@w1.fi>
If Access-Accept packet includes the Chargeable-User-Identity attribute,
copy this attribute as-is into accounting messages.
Signed-hostap: Jouni Malinen <j@w1.fi>
Previously, the timeout scheduled during the previous association was
used after reassociation if the STA entry had not yet been removed. The
next timeout does not need to happen that quickly, so reschedule it
during reassociation.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This makes it easier to figure out what exactly was done with the
ap_handle_timer registration/cancellation based on a debug log.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The next ap_handle_timer action was already cleared when association
is handled with user space -based SME. However, this step was missing
from the driver callback for indicating new association. This could
result in the first ap_handle_timer timeout on the new association
removing the station unexpectedly. Fix this by resetting the timeout_next
in hostapd_notif_assoc().
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
intended-for: hostap-1
A station may move from EAP/WPS key_mgmt to PSK using re-association. In
practice, this can happen most likely with WPS when the station runs
through the provisioning step (EAP/WPS) followed by PSK authentication.
If a deauthentication event is missed from the station for whatever
reason, the EAPOL authenticator state machine could have been left
running.
This can result in various issues, including unexpected disconnection of
the station while both the 4-way handshake and EAPOL authenticator state
machines (EAP) are running at the same time when the supplicant is
trying to use PSK. Fix this by explicitly clearing EAPOL authenticator
state machine on (re)association if the new association does not use it.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
intended-for: hostap-1
When starting an AP with HT40 on 2.4 GHz, limit the set of channels
to scan for based on the affected frequency range to speed up the
AP setup.
Signed-hostap: Jouni Malinen <j@w1.fi>
This should keep us from getting into a state where we bounce large
numbers of stations all at once. Spreading out the bounce should cause
less stress on the network as the idle stations won't all be trying to
reconnect at once.
Signed-hostap: Ben Greear <greearb@candelatech.com>
Use reason code 3 (Deauthenticated because sending STA is leaving)
instead of reason code 2 (Previous authentication ot valid) in the
Deauthentication frame sent at the time a BSS is terminated. This is
more accurate reason for the message and allows the stations to get
better understand on why they were disconnected. This can be useful
especially for P2P clients that can use this as a signal that the
P2P group session was ended per P2P specification section 3.2.9.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The signal strength is currently never used as the only driver reporting
it is nl80211 which uses IEEE80211_RADIOTAP_DB_ANTSIGNAL which is never
populated by the kernel. The kernel will (soon) populate
IEEE80211_RADIOTAP_DBM_ANTSIGNAL instead though, so use that.
Also, since it was never really populated, we can redefine the signal
field to be in dBm units only.
My next patch will also require knowing the signal strength of probe
requests throughout the code (where available), so add it to the
necessary APIs.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
When hostapd is about to start an AP using HT40, it starts a scan to
check whether it is allowed or not. If OLBC is detected before the
scan has completed, it sets the beacons prematurely.
To fix this, instead of setting all beacons when OLBC is detected,
only update the ones that have already been started.
Signed-off-by: Luciano Coelho <coelho@ti.com>
Implement wps_cancel for hostapd similarly to how it was already
supported in wpa_supplicant AP mode.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When drivers advertise their capability to free up inactive
stations based on ap_max_inactivity, send the inactivity period
timeout to driver in NL80211_ATTR_INACTIVITY_TIMEOUT. This
introduces a WPA_DRIVER_FLAGS (WPA_DRIVER_FLAGS_INACTIVITY_TIMER)
so that the inactivity period will be sent only when this capability
bit is set.
Signed-hostap: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
If a wildcard PIN is used on any of the radios that hostapd is
controlling, invalidate the matching PIN on all the other radios
to avoid multiple uses of the same PIN.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new venue_name configuration parameter can now be used to configure
the ANQP Venue Name values that stations can request through GAS.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This adds GAS/ANQP implementation into hostapd. This commit brings in
the basic GAS/ANQP functionality, but only the ANQP Capability List
element is supported.
For testing purposes, hostapd control interface SET command can be used
to set the gas_frag_limit parameter dynamically.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Definition of ANonce selection in IEEE Std 802.11i-2004 is somewhat
ambiguous. The Authenticator state machine uses a counter that is
incremented by one for each 4-way handshake. However, the security
analysis of 4-way handshake points out that unpredictable nonces help in
preventing precomputation attacks. Instead of the state machine
definition, use an unpredictable nonce value here to provide stronger
protection against potential precomputation attacks.
Signed-hostap: Jouni Malinen <j@w1.fi>
Move disassociate and deauthenticate commands to ctrl_iface_ap.c, so
that they ares accessible for wpa_supplicant AP mode and wpa_cli (with
CONFIG_AP option enabled).
Signed-hostap: Jithu Jance <jithu@broadcom.com>
Commit d9a38716cc did this for
hostapd_eapol_tx_status() but missed the older hostapd_tx_status()
path. Address that case, too.
The TX status event may be received after a station has been
disassociated in cases where the disassociation is following a
transmission of a Data frame. Ignore such events if the STA is not
associated at the moment the event is being processed. This avoids
confusing debug entries and rescheduling of the EAPOL TX timeouts for
STAs that are still in the STA table, but are not really in active EAPOL
session.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
Remove the GPL notification text from files that were initially
contributed by Atheros Communications or Qualcomm Atheros.
Signed-hostap: Jouni Malinen <j@w1.fi>
This fixes a corner case where a STA that has PMKSA cache entry (or
valid FT keys) could try to use full EAPOL/EAP authentication and fail.
If the STA will then try to use the still valid PMKSA cache entry (or
FT) before the STA entry has been cleared, authFail could have been left
to TRUE. That will make EAPOL authenticator PAE state machine enter HELD
state even though authSuccess was already forced to TRUE. This results
in the STA getting disconnected even though it should be allowed to
continue with 4-way handshake. While this is unlikely to happen in
practice, it is better to get this fixed by clearing authFail when
setting authSuccess.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
The TX status event may be received after a stations has been
disassociated in cases where the disassociation is following a
transmission of a Data frame. Ignore such events if the STA is not
associated at the moment the event is being processed. This avoids
confusing debug entries and rescheduling of the EAPOL TX timeouts for
STAs that are still in the STA table, but are not really in active EAPOL
session.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
While the exponential increase in the lockout period provides an
efficient mitigation mechanism against brute force attacks, this
additional trigger to enter indefinite lockout period (cleared by
restarting hostapd) will limit attacks even further by giving maximum of
10 attempts (without authorized user action) even in a very long term
attack.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When there is not enough entropy and there are two station associating
at the same time, one of the stations will be rejected, but during
that rejection, the "reject_4way_hs_for_entropy" flag gets cleared. This
may allow the second station to avoid rejection and complete a 4-Way
Handshake with a GTK that will be cleared as soon as more entropy is
available and another station connects.
This reworks the logic to ban all 4-way handshakes until enough entropy
is available.
Signed-hostap: Nicolas Cavallari <cavallar@lri.fr>
Number of places in hostapd use ap_sta_disconnect() instead of
ap_sta_disassociate() or ap_sta_deauthenticate(). There are some
differences between these functions, e.g., in the area how quickly
the EAPOL state machines get deinitialized. This can result in
somewhat unexpected events since the EAPOL/WPA authenticator
state machines could remain running after deauthentication.
Address this by forcing EAPOL/WPA authenticator state machines
to disabled state whenever ap_sta_disconnect() is called instead
of waiting for the deauthentication callback or other timeout
to clear the STA.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Some deployed station implementations seem to send msg 4/4 with
incorrect type value in WPA2 mode. Add a workaround to ignore that issue
so that such stations can interoperate with hostapd authenticator. The
validation checks were added in commit
f8e96eb6fd.
Signed-hostap: Jouni Malinen <j@w1.fi>
The Device ID attribute was already used in Listen state, but it was
ignored in GO role. Verify that there is a match with Device ID in
GO rule, too, before replying to the Probe Request frame.
Signed-hostap: Jouni Malinen <j@w1.fi>
Some supplicant implementations (e.g., Windows XP WZC) update SNonce for
each EAPOL-Key 2/4. This breaks the workaround on accepting any of the
pending requests, so allow the SNonce to be updated even if we have
already sent out EAPOL-Key 3/4.
While the issue was made less likely to occur when the retransmit
timeout for the initial EAPOL-Key msg 1/4 was increased to 1000 ms,
this fixes the problem even if that timeout is not long enough.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Now that we can use driver_nl80211.c with non-mac80211 drivers that
implement SME/MLME internally, we may not get inactivity time from the
driver. If that is the case, we need to skip disconnection based on
maximum inactivity timeout. This fixes some unexpected disconnection
cases with ath6kl in AP mode.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
hostapd uses the poll method to check if the station is alive
after the station has been inactive for ap_max_inactivity seconds.
Make the poll mechanism configurable so that user can choose to
disconnect idle clients.
This can be especially useful when some devices/firmwares have
restrictions on the number of clients that can connect to the AP
and that limit is smaller than the total number of stations trying
to use the AP.
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
The 100 ms timeout on retransmitting group key message can be too short
for stations that are in power save mode or if there is a large number
of association stations. While the retransmission of the EAPOL-Key frame
should allow this to be recovered from, it is useful to avoid
unnecessary frames to save soem CPU and power.
Signed-hostap: Jouni Malinen <j@w1.fi>
Add a new persistent group network block field, p2p_client_list, to
maintain a list of P2P Clients that have connected to a persistent
group. This allows GO of a persistent group to figure out more easily
whether re-invocation of a persistent group can be used with a specific
peer device.
Signed-hostap: Jouni Malinen <j@w1.fi>
This event can be very frequent in AP mode when Beacon frames from
neighboring BSSes are delivered to user space. Drop the debug
message priority from DEBUG to EXCESSIVE for Beacon frames.
Signed-hostap: Jouni Malinen <j@w1.fi>
Return 1/0 instead 0/-1 to indicate valid/invalid element so that
the if statement makes more sense with !wmm_valid().
Signed-hostap: Jouni Malinen <j@w1.fi>
This updates a previous patch did more or less the same thing by
providing the qosinfo as a single variable to the driver wrappers.
Signed-hostap: Jason Young <jason.young@dspg.com>
Add uapsd_queues and max_sp fields to sta_info struct,
and pass them to the sta_add callback.
These values are determined by the WMM IE in the (Re)Association Request.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Check whether the driver advertises support for U-APSD
in AP mode, and evaluate wmm_uapsd only in this case.
Signed-off-by: Eliad Peller <eliad@wizery.com>
This allows per-device PSK to be configured for WPA-Personal using a
RADIUS authentication server. This uses RADIUS-based MAC address ACL
(macaddr_acl=2), i.e., Access-Request uses the MAC address of the
station as the User-Name and User-Password. The WPA passphrase is
returned in Tunnel-Password attribute in Access-Accept. This
functionality can be enabled with the new hostapd.conf parameter,
wpa_psk_radius.
Signed-hostap: Michael Braun <michael-dev@fami-braun.de>
Configure a Probe Response template for drivers that support it. The
template is updated when the Beacon template is updated.
The Probe Response template is propagated to the driver via the set_ap()
callback.
Signed-hostap: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
This is needed for Probe Response template, so move the code into a
separate function that can be shared.
Signed-hostap: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
This previously helped when debugging some auth issues when hitting the
AP with 128 association attempts all at once.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Append "p2p_dev_addr" parameter to AP-STA-DISCONNECTED event for P2P
connections. In addition, for AP-STA-CONNECTED event during P2P
connection, the "dev_addr=" print is replaced with "p2p_dev_addr=" to
be more consistent with other events.
Signed-hostap: Jithu Jance <jithu@broadcom.com>
Testing code can now be enabled in the hostapd RADIUS server to dump
each derived MSK into a text file (e.g., to be used as an input to
wlantest). This functionality is not included in the default build
and can be enabled by adding the following line to hostapd/.config:
CFLAGS += -DCONFIG_RADIUS_TEST
The MSK dump file is specified with dump_msk_file parameter in
hostapd.conf (path to the dump file). If this variable is not set,
MSK dump mechanism is not enabled at run time.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 34445d12ee forgot to convert
the hostapd_prepare_rates() inline wrapper for builds that do not
define NEED_AP_MLME.
Signed-hostap: Jouni Malinen <j@w1.fi>
P2P invitation responses are transmitted with the BSSID set to the peer
address. Pass these action frames up to allow the GO to receive the
Invitation Response (and avoid sending the Invitation Request multiple
times).
Signed-off-by: Arik Nemtsov <arik@wizery.com>
A new hostapd.conf parameter, wps_rf_bands, can now be used to fix the
RF Bands value in cases where hw_mode is not set or when operating a
dual band dual concurrent AP.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When hostapd controls multiple radios, WPS operations are started on
all interfaces. However, when the provisioning run had been completed
successfully, actiove WPS mode was stopped only a single interface. Fix
this to iterate through all interfaces so that this is handled
consistently with the starting of WPS operation.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 628d54639a introduced number
of new WPS related ctrl_iface messages to hostapd. Some of these
were for ER events which do not make any sense to hostapd that
cannot operate as an ER. The WPS_EV_ER_SET_SELECTED_REGISTRAR one
from wps_registrar_sel_registrar_changed_event() was especially
problematic since it can cause wpa_supplicant ER code segfault due
to missing event data.
Revert all the ER specific changes from commit
628d54639a to get rid of the segfault
and undesired extra code in hostapd.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Send the connection events from P2P group to both the group interface
and parent interface ctrl_ifaces to make it easier for external monitor
programs to see these events without having to listen to all group
interfaces when virtual group interfaces are used.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This cleans up the source code and makes it less likely that new AKM
addition misses some needed changes in the future.
Signed-hostap: Jouni Malinen <j@w1.fi>
If the station is indicating use of WPS, WSC IE should be added into the
(Re)Association Response frame. This is clear for the case when WSC IE
was included in the (Re)Association Request frame. However, even the
WLAN_STA_MAYBE_WPS case may actually indicate use of WPS. Assume that to
be the case when WPA/WPA2 is enabled (i.e., when the STA does not
include WPA/RSN/WSC IE while AP has WPA/RSN enabled).
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 940a0ce970 moved the STA associated
check from driver_*.c into ieee802_1x_receive(), but failed to take into
account that wired networks and driver_wired.c do not mark the STA entry
associated. Fix this by skipping the check if the driver wrapper is
using a wired network.
Signed-hostap: Jouni Malinen <j@w1.fi>
Some client implementations only wait a few ms after sending a probe
request while scanning. Since probe responses are always sent at a low
rate this can eat quite some airtime and it might be impossible to get
the frame out before the client leaves the channel again. If the client
leaves before all probe reponses where acked this can cause the probe
reponse to be retried quite often consuming even more airtime.
Hence, add a new noack flag to the driver's send_mlme callback that
allows hostapd to request whether the driver should expect an ACK for
this frame or not.
Use the new noack-policy only for broadcast probe requests that contain
a wildcard SSID.
Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
In some situations it might be benefical to send a unicast frame without
the need for getting it ACKed (probe responses for example). In order to
achieve this add a new noack parameter to the drivers send_mlme callback
that can be used to advise the driver to not wait for an ACK for this
frame.
Signed-hostap: Helmut Schaa <helmut.schaa@googlemail.com>
The new event can be used when EAPOL TX status can't be reported as a
complete 802.11 frame but is instead reported as just the EAPOL data as
originally passed to hapd_send_eapol().
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
This is a workaround for Windows 7 supplicant rejecting WPA msg 3/4
in case it used Secure=1 in msg 2/4. This can happen, e.g., when
rekeying PTK after EAPOL-Key Error Request (Michael MIC failure)
from the supplicant.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This cleans up the code a bit by not having to deal with theoretical
possibility of maximum number of EAP methods to be different between
various components in hostapd.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit c2ff13c533 broke this with a
copy-paste typo that ended up adding the Probe Request P2P IE into the
Beacon frame (i.e., Beacon frame had two P2P IEs while Probe Response
had none).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
hapd->time_adv cannot really be NULL if hostapd_update_time_adv()
returns success, but this construction seems to be too difficult
for some static analyzers. While this change is not really needed
in practice, it makes it easier to go through warnings from such
analyzers.
Signed-hostap: Jouni Malinen <j@w1.fi>
Instead of trying to remember to add wpa_msg() calls for every possible
path where a STA becomes authorized or unauthorized, use
ap_sta_set_authorized() to send these events more consistently.
Signed-hostap: Jouni Malinen <j@w1.fi>
wpa_msg() has to use hapd->msg_ctx instead of hapd as the context
pointer to work properly in wpa_supplicant AP mode.
Signed-hostap: Jouni Malinen <j@w1.fi>
Currently, there is no events over the control interface
when a AP disconnects a station due to inactivity. With
this patch, an "AP-STA-DISCONNECTED" event will be sent.
Signed-hostap: Nicolas Cavallari <nicolas.cavallari@lri.fr>
The GTK is renewed in the hostapd after a MIC attack dissassociation
without informing the driver, causing decryption failures. This patch
sends the new GTK/IGTK to the driver after it is updated by the hostapd.
Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Some stations have been reported to send EAPOL-Key Error Reports
indicating Michael MIC failures even when the cipher is not TKIP
(e.g., when the network is using only CCMP). Ignore such reports
to avoid starting TKIP countermeasures unnecessarily. This can
prevent certaint types of denial of service attacks by insiders,
but mostly this is to work around invalid station implementations.
Signed-hostap: Jouni Malinen <j@w1.fi>
The eloop timeout to stop TKIP countermeasures has to be canceled
on deinit path to avoid leaving bogus timeouts behind.
Signed-hostap: Jouni Malinen <j@w1.fi>
This was included in the AP configuration parameters, but there has
been no way to set it to anything else than the default automatic
mode. Remove this parameter and just hardcode ERP determination to
follow the automatic mode.
hostapd_wpa_auth_conf() is called on uninitialized memory and the
conditional blocks in this function may leave some fields into
uninitialized state. This can result in unexpected behavior elsewhere
since some of the variables may be used without matching #ifdef
blocks. Fix this by zeroing the memory.
The Query Response Length Limit is not allowed to be zero when
this is sent by the AP. Use 0x7F to indicate that the limit is
based on maximum number of GAS fragments.
For P2P, the p2p_connect takes in device address argument to make a
connection. However the connected event AP-STA-CONNECTED comes with
interface address. The application listening on events would find it
difficult to map interface address to the p2p device address which is
provided for connection.
Append P2P Device Address to AP-STA-CONNECTED event for P2P Client
connection. This will help applications to easily map the P2P Interface
Address to P2P Device Address on CONNECTED event. For non-P2P case, it
will just print the usual STA MAC address alone.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
This offloads the station polling to driver wrappers, which may offload
it again to the driver. The hostap driver wrapper uses "real" data
frames while nl80211 uses null data frames.
Also add a specific event to indicate that a poll was successful for
future use with the nl80211 driver.
Remove the separate driver_ops functions set_cts_protect(),
set_preamble(), set_short_slot_time(), and set_ht_params(). These
belong into same set of operations as set_ap(), so there is no need
to maintain separate functions that just make the driver wrapper
more complex.
Since these have only been used with driver_nl80211.c, the driver_ops
can be removed immediately instead of maintaining backwards
compatibility period with the old functions.
The AP client isolation parameter is now available through set_ap().
driver_nl80211.c was the only driver wrapper using the set_intra_bss()
call in hostap.git, but some external trees may have used this. Once
those are cleared, the set_infra_bss() driver_ops can be removed
completely. The only remaining use case for it currently is in P2P
GO mode with wpa_supplicant.
AP mode operations were used for P2P device discovery Listen state
only during early experiments. This has now been cleaned up and
ieee802_11_set_beacon() is not called for P2P device discovery.
As such, this hack to skip Beacon configuration can be removed.
This is the first step in allowing SA Query mechanism in hostapd to be
used with drivers that implement authentication and association MLME/SME
(i.e., do not use ieee802_11.c).
Commit 17f6b90056 moved the concatenation
of WPS IEs, but did not include the validation that the IE buffer is not
NULL. In addition, the concatenation needs to be done based on the full
IE buffer instead of the parsed pointer that includes only a single
WPS IE.
Data path for stations that get successfully associated to the
hostapd but fail to get added in the driver/firmware, will not
work. In such cases, hostapd should deauth and disconnect such
stations. In such scenario, hostapd should disconnect the STAs.
Sample output with following patch
wlan0: STA 0c:74:c2:9a:4c:59 IEEE 802.11: authenticated
wlan0: STA 0c:74:c2:9a:4c:59 IEEE 802.11: associated (aid 1)
wlan0: AP-STA-CONNECTED 0c:74:c2:9a:4c:59
wlan0: STA 0c:74:c2:9a:4c:59 IEEE 802.11: Could not add STA to kernel driver
wlan0: STA 0c:74:c2:9a:4c:59 IEEE 802.11: deauthenticated due to local deauth request
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
The password_hash parameter was not copied in case of the integrated
authentication server (but was for RADIUS server). This broke EAP
authentication when the user entry used NT-hash.
The EAPOL authenticator was previously forcing disconnection in the WPS
use case. However, this can be benefitial operation with any IEEE 802.1X
authentication mechanism and need not be limited to WPS. This helps some
use cases like EAP-FAST where provisioning may require two
authentication runs if the authentication server does not allow the PAC
provisioning step to be used for normal data connection. While the
station would be free to decide to re-associate in such a case, not all
stations do and as such, it helps if the AP does that instead of leaving
the association up with EAPOL state machine in HELD state for 60
seconds.
When polling a station that has been inactive for a while, hostapd currently
always uses a null data frame. This is a bit strange with uAPSD clients
(though it seems to mostly work) since the EOSP bit can never be set in a
non-QoS frame. Make hostapd use QoS null data frames for probing when the
station is a QoS STA.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Wrap self-generated WPS credential for new AP settings and send that to
control interface to provide the needed information in
WPS-NEW-AP-SETTINGS for external processing.
Make the WPS processing of (Re)Association Request frame IEs conditional
on WPS support. This fixes a build issue with wps_is_20() not being
defined and makes the non-WPS build a bit smaller.
The Deauth/Disassoc TX status callbacks were ending up kicking the
station entry from kernel driver when test functionality was used to
inject Deauth/Disassoc frames from the AP with the purpose of leaving
the local association in place. Fix this by using STA flags to figure
out whether there was a pending callback for the frame that we need
to act on.
In addition, add forgotten functionality for the Disassoc TX status
callback to match the behavior with Deauth.
This allows the driver to use PS buffering of Deauthentication and
Disassociation frames when the STA is in power save sleep. The STA
entry (and PTK) will be removed from the kernel only after the
Deauth/Disassoc has been transmitted (e.g., when the STA wakes up).
A hardcoded two second timeout is used to limit the length of this
window should the driver fail to deliver the frame (e.g., the STA
is out of range and does not wake up). The kernel STA entry is
marked unauthorized during the wait to avoid accepting Data
frames from the STA that we have decided to disconnect.
This behavior is available only with drivers that provide TX status
events for Deauth/Disassoc frames (nl80211 at this point). Other
drivers continue to use the previous behavior where the STA entry
is removed immediately.
Extend the code that waits for the station to send EAPOL-Start before
initiating EAPOL authenticator operations to cover the case where the
station includes WPS IE in (Re)Association Request frame if that IE
does not include support for WPS 2.0. While this should not really
be needed, this may help with some deployed WPS 1.0 stations that do
not support EAPOL operations correctly and may get confused of the
EAP-Request/Identity packets that would show up twice if EAPOL-Start
is transmitted.
If an ER tries to send a message to a STA that is not in the middle
of WPS protocol, do not try to deliver that. This can help with issues
where an ER takes long time to reply to M1 and another Registrar has
already completed negotiation.
This change is a first step in better supporting different driver
architectures for AP mode operations with nl80211. This commit in
itself does not add new functionality, but it makes it easier to add
new AP mode parameters to address needs of drivers that have more of
the MLME/SME in firmware or kernel.
Split WPA initialization into two parts so that the Beacon frames can be
configured fully before the initial keys (GTK/IGTK) are configured. This
makes it easier for drivers that depend on the AP security mode being
fully set before the keys are configured.
This avoids a request to the driver to first start beaconing before
the WPA/RSN IE has been generated and then immediately changing the
beacon IEs once the WPA/RSN IE is ready.
Reassociation Request/Response frame validation need to count all IEs in
the RIC. In addition, TIE is not protected, so it should not be included
in the count.
Signed-off-by: Hong Wu <hong.wu@dspg.com>
Only accept Probe Request frames that have a Wildcard BSSID and a
destination address that matches with our P2P Device Address or is the
broadcast address per P2P specification 3.1.2.1.1.
When adding a new station, set the STA flags as part of the sta_add()
command. This ensures the flags are up to date when the station is added
by lower level drivers.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
A new hostapd configuration parameter, disable_pmksa_caching=1, can now
be used to disable PMKSA caching on the Authenticator. This forces the
stations to complete EAP authentication on every association when WPA2
is being used.
Data path is broken when hostapd reloads its configuration
disabling the security which was previously enabled (WEP/WPA),
using kill -1, as old keys were not cleared.
The patch clears the keys configured when hostapd reloads
its configuration.
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Previously hostapd just masked the STAs HT caps with its own. However,
some HT caps are not symmetric and as such need to be handled
different.
hostapd shouldn't overwrite the STAs SMPS mode as otherwise the driver
cannot know it has to use RTS/CTS to wake the receiver from dynamic
SMPS for MCS rates > 7.
hostapd shouldn't mask the RX and TX STBC caps with it's own. They are
already handled in a special case below.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
This fixes an issue with SA Query Response frames not being processed
anymore after wpa_supplicant started registering a handler for those.
This handler registration is in generic driver_nl80211.c code, so
hostapd uses it, too.
If the driver wrapper is setting up the interface up only at commit(),
UPnP initialization fails. Fix that by moving UPnP setup to happen after
the driver commit() call.
Windows 7 uses incorrect way of figuring out AP's WPS capabilities by
acting as a Registrar and using M1 from the AP. The config methods
attribute in that message is supposed to indicate only the configuration
method supported by the AP in Enrollee role, i.e., to add an external
Registrar. For that case, PBC shall not be used and as such, the
PushButton config method is removed from M1 by default. If pbc_in_m1=1
is included in the configuration file, the PushButton config method is
left in M1 (if included in config_methods parameter) to allow Windows 7
to use PBC instead of PIN (e.g., from a label in the AP).
It may take some time for the TX status to be delivered for a
(Re)Association Response frame and if any Data frames are received
during that time, they may end up getting dropped as Class 3 frames in
not-associated state. This results in a Disassociation frame being sent
to the station and it assuming that the association has been lost.
Work around the issue by remembering that the (Re)Association Request
has already been accepted and skip the Deauth/Disassoc sending because
of the possible Class 3 frames before the TX status callback is
received.
Both the SA and IEs from the received Probe Request frames must be
included and the Probe Request RX callback functions may assume that
these are not NULL.
Commit 03d3f28a69 broke initialization of
EAPOL authenticator state machines since an error value from
wpa_auth_sta_key_mgmt() (-1) was not handled properly and the fixed
wpa_key_mgmt_wpa_psk() identified the value as a PSK-based AKM because
of all bits being set to 1. The special error value needs to handled
separately to avoid skipping EAPOL state machine initialization.
This should fix EAPOL reauthentication and rekeying timeout issues
with Intel clients when using WMM (e.g., with IEEE 802.11n). These
stations do not seem to be able to handle EAPOL data frames as
non-QoS Data frames after the initial setup.
This adds STA flags to hapd_send_eapol() driver op to allow
driver_nl80211.c to mark the EAPOL frames as QoS Data frame
when injecting it through the monitor interface.
Some deployed supplicants update their SNonce for every receive
EAPOL-Key message 1/4 even when these messages happen during the
same 4-way handshake. Furthermore, some of these supplicants fail
to use the first SNonce that they sent and derive an incorrect PTK
using another SNonce that does not match with what the authenticator
is using from the first received message 2/4. This results in
failed 4-way handshake whenever the EAPOL-Key 1/4 retransmission
timeout is reached. The timeout for the first retry is fixed to
100 ms in the IEEE 802.11 standard and that seems to be short
enough to make it difficult for some stations to get the response
out before retransmission.
Work around this issue by increasing the initial EAPOL-Key 1/4
timeout by 1000 ms (i.e., total timeout of 1100 ms) if the station
acknowledges reception of the EAPOL-Key frame. If the driver does
not indicate TX status for EAPOL frames, use longer initial
timeout (1000 ms) unconditionally.
Previously, a bug in GKeyDoneStations count would remain in effect
until the authenticator is restarted. Make this more robust by
clearing the station count before each rekeying setup. While this
is not really supposed to be needed, there has been bugs in this
area in the past and it is safer to make the implementation recover
from such an issue automatically.
If the STA to be freed is still included in GKeyDoneStations count,
decrement the count when the STA is freed. This does not happen in
AP mode since there is enough time to go through the authenticator
state machine to clear the STA. However, in the current RSN IBSS
implementation, the authenticator state for the STA is freed in a
way that does not allow the state machine to go through the clearing.
To address this, make sure that wpa_free_sta_sm() decrements the
GKeyDoneStations count if the STA happened to be in the process of
GTK rekeying.
CFLAGS += -DCONFIG_RSN_TESTING in .config and rsn_testing=1 in
hostapd.conf can now be used to enable a testing mode that adds
extensions to RSN element. This can be used to check whether
station implementations are incompatible with future extensions
to the RSN element.
The AP code might, currently only in the case of HT40, defer actual
enabling to after a scan. In this case, the wpa_s AP code gets confused.
Add a callback for it to use and make it use it to finish only when the
setup has actually completed.
With appropriate hacks in place this allows using HT40 in P2P mode.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds the ability to add WPS vendor extensions to an AP (or GO).
They will be added to the WSC IE(s) in Beacon and Probe Response frames.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of converting back and forth from the string representation,
always use the binary representation internally.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently hostapd will force HT Mixed Mode if at least one non-GF STA is
associated. This will force _all_ HT transmissions to be protected.
802.11n-2009 doesn't require HT Mixed Mode to be used in case of non-GF
STAs but instead the HT information element contains a flag if non-GF
STAs are present. All STAs are required to protect GF transmissions in
that case. Hence, setting HT Mixed mode if non-GF STAs are present is
superfluous.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
This allows driver wrappers to indicate whether the association was
done using Association Request/Response or with Reassociation
Request/Response frames.
os_snprintf() can be a preprocessor macro and according to
C99 (6.10.3 clause 11) the results of having preprocessor directives
inside the macro arguments is undefined.
When using multiple vifs and dynamic vlan tagging is enabled on any
interface, the created AP VLAN interfaces get the BSSID of the first
AP mode interface instead of the BSSID of the corresponding AP mode
interface.
Example:
wlan0 - xx:xx:xx:xx:x0
wlan1 - xx:xx:xx:xx:x1
Assume a STA connects to the AP interface wlan1 and gets a dynamic
VLAN tag 100 assigned by the RADIUS server. Hostapd will create an AP
VLAN interface wlan1.100 but doesn't set an address for this interface
which results in wlan1.100 getting the same address as wlan0:
wlan1.100 - xx:xx:xx:xx:x0
As a result the STA that was moved to wlan1.100 isn't able to finish its
4-way handshake since mac80211 won't pass its frames to wlan1.100 due to
the different address.
To fix this issue make use of the address of the AP interface when
creating an AP VLAN interface.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Add MAC addresses for stations and use wpa_msg instead of printf
methods to make it easier to grep logs and find messages for the
station in question.
Signed-off-by: Ben Greear <greearb@candelatech.com>
In multi BSS setups it wasn't possible to set up an HT BSS in
conjunction with a WEP/TKIP BSS. HT needed to be turned off entirely
to allow WEP/TKIP BSSes to be used.
In order to allow HT BSSes to coexist with non-HT WEP/TKIP BSSes add a
new BSS conf attribute "disable_11n" which disables HT capabilities on a
single BSS by suppressing HT IEs in the beacon and probe response
frames. Furthermore, mark all STAs associated to a WEP/TKIP BSS as
non-HT STAs. The disable_11n parameter is used internally; no new entry
is parsed from hostapd.conf.
This allows a non-HT WEP/TKIP BSS to coexist with a HT BSS without
having to disable HT mode entirely. Nevertheless, all STAs associated to
the WEP/TKIP BSS will only be served as if they were non-HT STAs.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Use l2_packet with Ethernet header included so that the source
address for RRB packets can be forced to be the local BSSID. This
fixes problems where unexpected bridge interface address may end
up getting used and the recipient of the frame dropping it as
unknown R0KH/R1KH.
This is needed to keep kernel and hostapd in sync. In addition,
the obsolete entry in hostapd prevented use of Deauthentication
or Disassociation frame with reason code 6/7 mechanism to indicate
to the STA that there is no association if the STA missed the
broadcast Deauthentication frame for any reason.
The internal pointer to RADIUS client configuration needs to be
updated whenever a new hostapd configuration is loaded. Without
this, freed memory may be dereferenced and this can result in
segmentation faults.
This is needed to allows WPS PBC session overlap detection to work
with drivers that process Probe Request frames internally. This
code is is run in hostapd, but the wpa_supplicant AP mode did not
have call to the hostapd_probe_req_rx() function even though it
registered handlers for hostapd Probe Request RX callbacks.
An optional parameter, p2p_dev_addr, can now be given to WPS_PBC
command on P2P GO to indicate that only the P2P device with the
specified P2P Device Address is allowed to connect using PBC. If
any other device tries to use PBC, a session overlap is indicated
and the negotiation is rejected with M2D. The command format for
specifying the address is "WPS_PBC p2p_dev_addr=<address>", e.g.,
WPS_PBC p2p_dev_addr=02:03:04:05:06:07
In addition, show the PBC session overlap indication as a WPS failure
event on an AP/GO interface. This particular new case shows up as
"WPS-FAIL msg=4 config_error=12".
Add a callback for station's authorized transitions
to allow wpa_supplicant to emit events in DBus.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To enable making state change notifications on the WLAN_STA_AUTHORIZED
flag, introduce ap_sta_set_authorized(), and to reduce use of the flag
itself also add a wrapper for testing the flag: ap_sta_is_authorized().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to call this function after having completed the neighboring
channel scan to figure out whether HT40 can be used and if so, which
channel is the secondary channel.
ieee80211n_supported_ht_capab is called after ieee80211n_check_40mhz in
function hostapd_check_ht_capab. ieee80211n_check_40mhz can return 1 in
a valid scenario where the initialization is completed in a callback. In
this case ieee80211n_supported_ht_capab is skipped and hostapd does not
check the ht capabilities reported by the driver. Fix this issue making
sure ieee80211n_supported_ht_capab gets called.
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
If WMM is not disabled explicitly (wmm_enabled=0 in hostapd.conf),
enable WMM automatically whenever HT (ieee80211n) is enabled. Use
the default WMM parameters for AP TX queues and the EDCA parameters
advertised for stations in WMM IE if no overriding values are
included in the configuration.
tdls_prohibit=1 and tdls_prohibit_chan_switch=1 and now be used to
disable use of TDLS or TDLS channel switching in the BSS using
extended cabilities IE as defined in IEEE 802.11z.
Make sure that received management frames are long enough before
processing them. This avoids a potential segmentation fault if a
driver delivers an invalid frame all the way to hostapd.
Previously, only the Configuration Error values were indicated in
WPS-FAIL events. Since those values are defined in the specification
it is not feasible to extend them for indicating other errors. Add
a new error indication value that is internal to wpa_supplicant and
hostapd to allow other errors to be indicated.
Use the new mechanism to indicate if negotiation fails because of
WEP or TKIP-only configurations being disallows by WPS 2.0.
Previously, both NULL and ff:ff:ff:ff:ff:ff addr were used in various
places to indicate default/broadcast keys. Make this more consistent
and useful by defining NULL to mean default key (i.e., used both for
unicast and broadcast) and ff:ff:ff:ff:ff:ff to indicate broadcast
key (i.e., used only with broadcast).
The nl80211 driver can report low ACK condition (in fact it reports
complete loss right now only). Use that, along with a config option, to
disconnect stations when the data connection is not working properly,
e.g., due to the STA having went outside the range of the AP. This is
disabled by default and can be enabled with disassoc_low_ack=1 in
hostapd or wpa_supplicant configuration file.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The frame needs to be sent from an individual (non-group) address,
so drop invalid frames before sending Deauth/Disassoc frames to
not associated STAs.
Getting rid of these inline functions seems to reduce the code size
quite a bit, so convert the most commonly used hostapd driver ops to
function calls.
This is not needed anymore and just makes things more difficult
to understand, so move the remaining function pointers to direct
function calls and get rid of the struct hostapd_driver_ops.
send_eapol, set_key, read_sta_data, sta_clear_stats,
set_radius_acl_auth, set_radius_acl_expire, and set_beacon
to use inline functions instead of extra abstraction.
Commit bf65bc638f started the path to
add this new abstraction for driver operations in AP mode to allow
wpa_supplicant to control AP mode operations. At that point, the
extra abstraction was needed, but it is not needed anymore since
hostapd and wpa_supplicant share the same struct wpa_driver_ops.
Start removing the unneeded abstraction by converting
send_mgmt_frame() to an inline function, hostapd_drv_send_mlme().
This is similar to the design that is used in wpa_supplicant and
that was used in hostapd in the past (hostapd_send_mgmt_frame()
inline function).
On Linux, verify that the kernel entropy pool is capable of providing
strong random data before allowing WPA/WPA2 connection to be
established. If 20 bytes of data cannot be read from /dev/random,
force first two 4-way handshakes to fail while collecting entropy
into the internal pool in hostapd. After that, give up on /dev/random
and allow the AP to function based on the combination of /dev/urandom
and whatever data has been collected into the internal entropy pool.
wlan0: RADIUS No authentication server configured
MEMLEAK[0x999feb8]: len 1040
WPA_TRACE: memleak - START
[3]: ./hostapd(radius_msg_new+0x33) [0x8074f43]
radius_msg_new() ../src/radius/radius.c:117
[4]: ./hostapd() [0x806095e]
ieee802_1x_encapsulate_radius() ../src/ap/ieee802_1x.c:439
ieee802_1x_aaa_send() ../src/ap/ieee802_1x.c:1496
For example, this error occured when I used WPS hostapd without
"eap_server=1" definition in configuration file.
By default, make hostapd and wpa_supplicant maintain an internal
entropy pool that is fed with following information:
hostapd:
- Probe Request frames (timing, RSSI)
- Association events (timing)
- SNonce from Supplicants
wpa_supplicant:
- Scan results (timing, signal/noise)
- Association events (timing)
The internal pool is used to augment the random numbers generated
with the OS mechanism (os_get_random()). While the internal
implementation is not expected to be very strong due to limited
amount of generic (non-platform specific) information to feed the
pool, this may strengthen key derivation on some devices that are
not configured to provide strong random numbers through
os_get_random() (e.g., /dev/urandom on Linux/BSD).
This new mechanism is not supposed to replace proper OS provided
random number generation mechanism. The OS mechanism needs to be
initialized properly (e.g., hw random number generator,
maintaining entropy pool over reboots, etc.) for any of the
security assumptions to hold.
If the os_get_random() is known to provide strong ramdom data (e.g., on
Linux/BSD, the board in question is known to have reliable source of
random data from /dev/urandom), the internal hostapd random pool can be
disabled. This will save some in binary size and CPU use. However, this
should only be considered for builds that are known to be used on
devices that meet the requirements described above. The internal pool
is disabled by adding CONFIG_NO_RANDOM_POOL=y to the .config file.
This commit adds a new wrapper, random_get_bytes(), that is currently
defined to use os_get_random() as is. The places using
random_get_bytes() depend on the returned value being strong random
number, i.e., something that is infeasible for external device to
figure out. These values are used either directly as a key or as
nonces/challenges that are used as input for key derivation or
authentication.
The remaining direct uses of os_get_random() do not need as strong
random numbers to function correctly.
This adds more time for the system entropy pool to be filled before
requesting random data for generating the WPA/WPA2 encryption keys.
This can be helpful especially on embedded devices that do not have
hardware random number generator and may lack good sources of
randomness especially early in the bootup sequence when hostapd is
likely to be started.
GMK and Key Counter are still initialized once in the beginning to
match the RSN Authenticator state machine behavior and to make sure
that the driver does not transmit broadcast frames unencrypted.
However, both GMK (and GTK derived from it) and Key Counter will be
re-initialized when the first station connects and is about to
enter 4-way handshake.
The example GMK-to-GTK derivation described in the IEEE 802.11 standard
is marked informative and there is no protocol reason for following it
since this derivation is done only on the AP/Authenticator and does not
need to match with the Supplicant. Mix in more data into the derivation
process to get more separation from GMK.
There is no point in maintaining two almost identical versions
of this parser. Move WPA IE parser into wpa_common.c similarly
to what was already the case with RSN IE parse.
WPS external Registrars can get confused about multiple UPnP
instances (one per radio) on a dual-concurrent APs. Simplify the
design by sharing a single UPnP state machine for all wireless
interfaces controlled by hostapd. This matches with the previous
changes that made a single command enable WPS functionality on
all interfaces.
This is relatively minimal change to address the sharing of the
state among multiple struct hostapd_data instances. More cleanup
can be done separately to remove unnecessary copies of information.
Commit c3fc47ea8e fixed EAP passthrough
server to allow Logoff/Re-authentication to be used. However, it
broke EAP standalone server while doing that. Fix this by reverting
the earlier fix and by clearing the EAP Identity information in the
EAP server code whenever an EAPOL-Start or EAPOL-Logoff packet is
received.
These are not used by any driver wrapper, i.e., only the four
data queues (BK, BE, VI, VO) are configurable. Better remove these
so that there is no confusion about being able to configure
something additional.
This is needed to avoid problems with other applications setting and
leaving the interface to IF_OPER_DORMANT state. In AP mode, the interface
is ready immediately after the keys are set, so we better make sure the
DORMANT state does not prevent normal operations after that.
Some driver wrappers may end up indicating a disassociation or
deauthentication event without the address of the station, e.g.,
based on a previous non-AP mode event. Avoid crashing hostapd
by verifying that the require address parameter is available in
the event before processing it.
This test command is supposed to change the WPS version number in all
places immediately, so make sure that the IEs used in management
frames get updated immediately.
The P2P group component is now tracking of associated stations
in the group and the Group Limit bit in the Group Capabilities
is updated based on whether there is room for new clients in
the group.
The AP operation with wpa_supplicant requires an additional callback
to get the needed event information from hostapd side so that
wpa_msg() can be called for wpa_s->parent if needed.
When a single hostapd process is controlling multiple interfaces,
apply the received or auto-generated configuration changes to all
interfaces that have enabled WPS.
When the same hostapd process is controlling multiple interfaces,
apply WPS commands (push button, add PIN, change AP PIN) to all
interfaces that are configured to use WPS.
Commit 3379a3a795 added a direct
iface->for_each_interface use without verification whether the
function is available. This works with hostapd, but not
wpa_supplicant (which crashes on segfault).
The previous implementation ended up incorrectly assuming that all
40 MHz use cases have secondary channel above the primary one. Fix this
by properly masking the secondary channel offset field and checking its
value.
This is needed to update the pointers maintained within WPS code
to use the new configuration data instead of maintaining pointers
to the old configuration which will be freed. This fixes strings in
UPnP discovery after reconfig (they used to be random freed memory..).
This seems to be the easiest way of making sure the Config Methods
value is compliant with the WSC 2.0 specification without having
to modify the configuration file. However, this will only add the
virtual flag, so the configuration files should really be updated
to specify values that match the AP design.
WPS 2.0 mandates the AP to include WPS IE in (Re)Association Response
if the matching (Re)Association Request included WPS IE. Provide the
needed WPS IE information to the driver_ops API for drivers that
process association frames internally.
Note: This modifies the driver_ops API by adding a new argument to
set_ap_wps_ie().
The Beacon frame must include UUID-E and RF Bands attributes when
in active PBC mode to allow stations to figure out that two BSSes in
PBC mode is not a PBC session overlap.
When generating the UUID based on MAC address, share the same UUID
with all interfaces. This fixes a potential issue with concurrent
dualband APs where the UUID needs to be same for PBC to work properly.
This can happen, e.g., when a P2P client connects to a P2P group
using the infrastructure WLAN interface instead of P2P group
interface. In that case, the P2P client may behave as if the GO
would be a P2P Manager WLAN AP.
For now, this applies to the test command that can be used to set
periodic NoA (p2p_set noa). The value are stored and periodic NoA
is enabled whenever there are no non-P2P STAs connected to the GO.
If CONFIG_WPS_STRICT is set, validate WPS IE(s) in management frames and
reject the frames if any of the mandatory attributes is missing or if an
included attribute uses an invalid value. In addition, verify that all
mandatory attributes are included and have valid values in the WSC
messages.
Advertize list of authorized enrollee MAC addresses in Beacon and
Probe Response frames and use these when selecting the AP. In order
to provide the list, the enrollee MAC address should be specified
whenever adding a new PIN. In addition, add UUID-R into
SetSelectedRegistrar action to make it potentially easier for an AP
to figure out which ER sent the action should there be multiple ERs
using the same IP address.
While this is not strictly speaking required based on dynamic
configuration (i.e., dot11ShortPreambleOptionImplemented is static
value based on implementation, not runtime configuration), it is better
to follow local configuration parameter for short preamble in addition
to the associated station capabilities.
This function is not really needed in case of drivers that build the
HT IEs internally. However, since this can get called if ieee80211n=1
is set in hostapd.conf, we better not segfault even if the driver
does not provide hw info (hapd->iface->current_mode == NULL).
Commit 5a1cc30f1a added code that was
assuming CONFIG_WPS_UPNP is enabled whenever CONFIG_WPS is. Fix this
by making the UPnP calls conditional on CONFIG_WPS_UPNP define.
hostapd simply used its own STBC configuration in the STA's HT caps. This
resulted in TX STBC being used for STAs not supporting RX STBC, which in
turn resulted in the STA not receiving anything.
Fix this by handling the STBC flags in the same way mac80211 does. Mask
out RX STBC if we don't support TX STBC and vice versa.
Tested only with the nl80211 driver and a STBC incapable STA.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
A new hostapd_cli command, wps_ap_pin, can now be used to manage
AP PIN at runtime. This can be used to generate a random AP PIN and
to only enable the AP PIN for short period (e.g., based on user
action on the AP device). Use of random AP PIN that is only enabled
for short duration is highly recommended to avoid security issues
with a static AP PIN.
As a compromise between usability and security, do not disable
AP PIN permanently based on failed PIN validations. Instead, go to
AP Setup Locked state for increasing amount of time between each
failure to slow down brute force attacks against the AP PIN.
This avoids problems with some external Registrars that may try
to use the same PIN multiple times without user input. Now, the
user will still be able to fix the PIN and try again later while
a real attack is delayed enough to make it impractical.
In theory, this should not really be needed, but Windows 7 uses
Registrar mode to probe AP's WPS capabilities before trying to use
Enrollee and fails if the AP does not allow that probing to happen.
This allows the AP to start as an Enrollee and send M1, but refuse
to continue beyond that (M3 will not be sent if AP PIN is not known).
