This makes the implementation less likely to provide useful timing
information to potential attackers from comparisons of information
received from a remote device and private material known only by the
authorized devices.
Signed-off-by: Jouni Malinen <j@w1.fi>
This extends the earlier commit e6270129f6
('Clean up EAPOL-Key Key Data processing') design to be used with
PeerKey EAPOL-key processing as well. This avoids false warnings from
static analyzer (CID 62860, CID 62861, CID 62862).
Signed-off-by: Jouni Malinen <j@w1.fi>
Use a helper function to avoid multiple copies of the same long list of
argument parameters to wpa_sm_tdls_peer_addset() from the peer entry.
Signed-off-by: Jouni Malinen <j@w1.fi>
Update the peer STA with full info sending TDLS Setup Response/Confirm
frames instead of after the full setup exchange. This makes it easier
for some drivers to properly negotiate QoS and HT information on the
direct link.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
There is no need to keep the peer entry in memory after the link has
been removed.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Tested-by: Ilan Peer <ilan.peer@intel.com>
Some APs (Cisco) may tack on a weird IE to the end of a TDLS Discovery
Request packet. This needn't fail the response, since the required IEs
are verified separately.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Some APs (Cisco) may tack on a weird IE to the end of the TDLS confirm
packet, which can fail negotiation. As an interoperability workaround,
ignore IE parser failures and reject the frame only if any of the
mandatory IEs are not included.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Commit 342bce63cd introduced a possibility
of a NULL pointer dereference on the error path if a new peer entry
fails to get added (i.e., memory allocation failure). Fix that by
skipping the wpa_tdls_peer_free() call if necessary.
Signed-off-by: Jouni Malinen <j@w1.fi>
The driver might not be able to add the TDLS STA. Fail if this happens.
Also fix the error path to always reset the TDLS peer data.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
If a link is unreachable, the specification mandates we should send a
teardown packet via the AP with a specific teardown reason. Force this
by first disabling the link and only then sending the teardown packet
for the LOW_ACK event.
Rename the TDLS LOW_ACK event handler to better reflect its purpose.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Use a single location in wpa_sm_rx_eapol() for preparing the pointer to
the Key Data field and to its validated length instead of fetching that
information in number of processing functions separately.
Signed-off-by: Jouni Malinen <j@w1.fi>
Re-order wpa_sm_rx_eapol() to first go through all EAPOL (802.1X) header
validation steps using the original message buffer and re-allocate and
copy the frame only if this is a valid EAPOL frame that contains an
EAPOL-Key. This makes the implementation easier to understand and saves
unnecessary memory allocations and copying should other types of EAPOL
frames get here.
Signed-off-by: Jouni Malinen <j@w1.fi>
The additional eight octet field was removed from keydatalen without
proper validation of the Key Data Length field. It would have been
possible for an invalid EAPOL-Key frame to be processed in a way that
ends up reading beyond the buffer. In theory, this could have also
resulted in writing beyond the EAPOL-Key frame buffer, but that is
unlikely to be feasible due to the AES key wrap validation step on
arbitrary memory contents.
Signed-off-by: Jouni Malinen <j@w1.fi>
The following kde.rsn_ie_len != peer->rsnie_i_len was already taking
care of enforcing the length to be within the target buffer length.
Anyway, this explicit check makes this clearer and matches the design in
TPK M1 processing.
Signed-off-by: Jouni Malinen <j@w1.fi>
If PMF was enabled, the validation step for EAPOL-Key descriptor version
ended up rejecting the message if GCMP had been negotiated as the
pairwise cipher. Fix this by making the GCMP check skipped similarly to
the CCMP case if a SHA256-based AKM is used.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Disabling the link only clears the local state. The remote peer will
still think we are connected and disallow the setup.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
When de-authenticating from the AP, disable each TDLS link after
sending the teardown packet. Postpone the reset of the peer state
data until after the link disable request.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Commit 96ecea5eb1 did not consider
to pass the VHT/HT/WMM capabilities of the peer for BSS with
open mode.
Address this issue by passing the capabilities irrespective of
the security mode.
Signed-off-by: Pradeep Reddy POTTETI <c_ppotte@qti.qualcomm.com>
Some of the buffers used to keep a copy of PTK/TPTK/GTK in the
supplicant implementation maintained a copy of the keys longer than
necessary. Clear these buffers to zero when the key is not needed
anymore to minimize the amount of time key material is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
"SET tdls_testing 0x800" can be used to enable a special test mode that
forces the FTIE MIC in TDLS setup messages to be incorrect.
Signed-off-by: Jouni Malinen <j@w1.fi>
While framing the TDLS Setup Confirmation frame, the driver needs to
know if the TDLS peer is VHT/HT/WMM capable and thus shall construct the
VHT/HT operation / WMM parameter elements accordingly. Supplicant
determines if the TDLS peer is VHT/HT/WMM capable based on the presence
of the respective IEs in the received TDLS Setup Response frame.
The host driver should not need to parse the received TDLS Response
frame and thus, should be able to rely on the supplicant to indicate
the capability of the peer through additional flags while transmitting
the TDLS Setup Confirmation frame through tdls_mgmt operations.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This allows hostapd to set a different management group cipher than the
previously hardcoded default BIP (AES-128-CMAC). The new configuration
file parameter group_mgmt_cipher can be set to BIP-GMAC-128,
BIP-GMAC-256, or BIP-CMAC-256 to select one of the ciphers defined in
IEEE Std 802.11ac-2013.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
TDLS Setup Request/Response frames from the peers include the WMM IE,
hence parse the same and consider the QoS Info from the WMM IE. The
qos_info obtained in the WMM IE overwrites the one obtained through
WLAN_EID_QOS attribute.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Incorrect PTK length was used in PMK-to-PTK derivation and the Michael
MIC TX/RX key swapping code was incorrectly executed for these ciphers
on supplicant side.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It looks like some deployed devices may send an invalid supported
operating class element (length = 0) in TDLS Setup messages. With
cfg80211, this results in the NL80211_CMD_SET_STATION command failing
due to an invalid argument (cfg80211 mandates supported operating
classes information to have a length of 2..253 octets).
Work around this interop issue by ignoring the Supported Operating Class
element if it has invalid length.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This new mechanism allows P2P Client to request an IPv4 address from the
GO as part of the 4-way handshake to avoid use of DHCP exchange after
4-way handshake. If the new mechanism is used, the assigned IP address
is shown in the P2P-GROUP-STARTED event on the client side with
following new parameters: ip_addr, ip_mask, go_ip_addr. The assigned IP
address is included in the AP-STA-CONNECTED event on the GO side as a
new ip_addr parameter. The IP address is valid for the duration of the
association.
The IP address pool for this new mechanism is configured as global
wpa_supplicant configuration file parameters ip_addr_go, ip_addr_mask,
ip_addr_star, ip_addr_end. For example:
ip_addr_go=192.168.42.1
ip_addr_mask=255.255.255.0
ip_addr_start=192.168.42.2
ip_addr_end=192.168.42.100
DHCP mechanism is expected to be enabled at the same time to support P2P
Devices that do not use the new mechanism. The easiest way of managing
the IP addresses is by splitting the IP address range into two parts and
assign a separate range for wpa_supplicant and DHCP server.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The information of the peer's supported channel and operating class
is required for the driver to do TDLS off channel operations with a
compatible peer. Pass this information to the driver when the peer
station is getting added.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Some EAP methods can go through a step that is expected to fail and as
such, should not trigger temporary network disabling when processing
EAP-Failure or deauthentication. EAP-WSC for WPS was already handled as
a special case, but similar behavior is needed for EAP-FAST with
unauthenticated provisioning.
Signed-hostap: Jouni Malinen <j@w1.fi>
It was already possible to configure hostapd and wpa_supplicant to use
FT-SAE for the key management, but number of places were missing proper
AKM checks to allow FT to be used with the new AKM.
Signed-hostap: Jouni Malinen <j@w1.fi>
The earlier changes to buffer EAPOL frames when not associated to avoid
race conditions (especially commit
3ab35a6603 but maybe something even before
that) broke PeerKey 4-way handshake. Fix this by using a separate check
before the race condition workaround to process PeerKey 4-way handshake
EAPOL-Key messages differently.
Signed-hostap: Jouni Malinen <j@w1.fi>
PeerKey entries need to be removed on disassociation and this needs to
be done in a way that cancels the possibly pending eloop timeout.
Signed-hostap: Jouni Malinen <j@w1.fi>
This prepares wpa_supplicant for accepting cases where the AP does not
use group addressed frames.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The eloop already tracks the expiration/lifetime, and the expiration
isn't really used, so remove it. It should otherwise have used monotonic
time, but since it's not actually used, we can remove it instead.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
A reenable of the TDLS link while the host driver is already processing
the same (due to the retransmitted M2/M3 frames) might result in a
failed TDLS setup handshake due to some host driver's implementation.
Thus, issue enable link only when the peer's TDLS status signifies no
prior link (tpk_success=0).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Add DBus methods for TDLS operations similar to those available
for the control interface. This includes Discover, Setup, and
Teardown commands. While here, add a method to query the TDLS
link status and add a DBus method for it.
Tested with CONFIG_TDLS enabled, on a TDLS-enabled host and
peer capable of TDLS:
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSStatus string:<peer-mac-address>
yields: string "peer does not exist"
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSDiscover string:<peer-mac-address>
yields no error
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSSetup string:<peer-mac-address>
yields no error
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSStatus string:<peer-mac-address>
yields: string "connected" after TDLS completes
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSTeardown string:<peer-mac-address>
yields no error
dbus-send --system --dest=fi.w1.wpa_supplicant1 --print-reply \
/fi/w1/wpa_supplicant1/Interfaces/0 \
fi.w1.wpa_supplicant1.Interface.TDLSStatus string:<peer-mac-address>
yields: string "peer not connected"
Signed-hostap: Paul Stewart <pstew@chromium.org>
The GTK rekey offload information was sent to the driver immediately
after the 4-way handshake which ended up being before the initial group
key exchange in the case of WPA (v1). This could result in even that
initial GTK handshake being offloaded and wpa_supplicant being left in
WPA_GROUP_HANDSHAKE state. Fix this by postponing the operation to
happen only after the full set of initial EAPOL-Key exchanges have been
completed (i.e., in the existing location for WPA2 and a after the group
key handshake for WPA).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
A new TDLS request shall transmit TPK M1 frame with a unique INonce.
Thus a new explicit request would fail an ongoing TDLS negotiation with
the error "TDLS: FTIE SNonce in TPK M3 does not match with FTIE SNonce
used in TPK M1" if the peer happens to receive two M1 frames before an
M3 frame. Check for the ongoing negotiation with the peer and do not
start a new one if we are already in a setup negotiation with the peer.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need to go through the peer list when we already have a
pointer to the specific peer entry.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This is called from number of locations and it is more efficient to use
a new helper function instead of wpa_tdls_disable_link() that would do
peer address search from the list of peers.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Making this function be used only for external setup case simplifies the
implementation and makes core wpa_supplicant calls in ctrl_iface.c and
events.c consistent.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is no point in updating the RNonce for every obtained TPK M1 frame
(e.g., retransmission due to timeout) with the same INonce (SNonce in
FTIE). Update RNonce only if a TPK M1 is received with a different
INonce (new TDLS session) to avoid issues with two setup exchanges
getting mixed and exchange failing due to mismatching nonces ("TDLS:
FTIE ANonce in TPK M3 does not match with FTIE ANonce used in TPK M2").
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Clear the peer information and disable the created link on a
failed TDLS setup negotiation. This is needed to avoid leaving
TDLS setup pending and to return to the AP path in case anything
goes wrong during the setup attempt.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
A transmission failure of the TDLS Setup Request frame (TPK Handshake
M1) results in no further retries and the peer entry being left in state
where all TDLS Setup Request frames from the peer with higher address
would be rejected, thus always resulting in a failure to establish a
TDLS link. Handle the failures in transmission by disabling the link
immediately to ensure the traffic to the peer goes through the AP. This
commit also handles similar transmision failures for TPK Handshake M2
and M3 frames (TDLS Setup Response and Confirm).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The ext_supp_rates passed to merge_byte_arrays would be invalid if not
advertized by the TDLS peer. Thus, validate the argument to avoid
crashes in such cases.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is not much use for enabling WPA without WPA2 nowadays since most
networks have been upgraded to WPA2. Furthermore, the code size savings
from disabling just WPA2 are pretty small, so there is not much
justification for maintaining this build option. Remove it to get rid of
undesired complexity.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit ae8535b6e1 added a new function
wpa_sm_pmf_enabled() which is called from WNM code without ifdefs.
Define a dummy wrapper for this function to fix build if WPA2 is
disabled.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 4033935dd9 updated
pmksa_cache_flush() function arguments, but forgot to update the wrapper
function for cases where WPA2 or EAP has been disabled in the build.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The Michael MIC TX and RX keys needs to be swapped in the FT case just
like in all other TKIP key configuration cases. This fixes issues where
TKIP as group cipher resulted in Michael MIC failures being detected for
each received group-addressed frame after FT protocol use.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Define a proper event prefix and include additional information to allow
ESS Dissassociation Imminent event to be used in a wpa_cli action
script.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit c3fea27274 added a call to clear
all other PMKSA cache entries for the same network if the PMKSA cache
entry of the current AP changed. This was needed to fix OKC cases since
the other APs would likely use the new PMK in the future. However, this
ended up clearing entries in cases where that is not desired and this
resulted in needing additional full EAP authentication with networks
that did not support OKC if wpa_supplicant was configured to try to use
it.
Make PMKSA cache entry flushing more limited so that the other entries
are removed only if they used the old PMK that was replaced for the
current AP and only if that PMK had previously been used successfully
(i.e., opportunistic flag was already cleared back to 0 in
wpa_supplicant_key_neg_complete()). This is still enough to fix the
issue described in that older commit while not causing problems for
standard PMKSA caching operations even if OKC is enabled in
wpa_supplicant configuration.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
TDLS responder STA used to retransmit the TDLS Setup Response after 5
seconds if the TDLS Setup Confirm is not received. The initiator would
have enabled the TDLS link and started transmitting the data to the peer
on the TDLS link after transmitting the TDLS Setup Confirm frame. If the
TDLS Setup Confirm frame is not received by the receiver, the
transmissions from the initiator on the direct link would get failed for
the TDLS link not getting enabled on the receiver. This commit reduces
the data delivery failure duration by shortening the retry time of the
TDLS Setup Response frames. The retry limit of the TDLS Response frame
also is increased to ensure that the peer does not miss the frames in
the reduced time period.
Signed-hostap: Sunil Dutt <duttus@codeaurora.org>
The reason code for the teardown request is overwritten for open
mode. This commit removes the code that does so by reverting parts
of commit 0cb12963b6.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The information of the peer's AID is required for the driver to
construct partial AID in VHT PPDU's. Pass this information to the driver
during add/set station operations (well, as soon as the information is
available, i.e., with set station operation currently).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Reset ft_completed if STA receives deauthentication
between FT reassoc success and the subsequent initial
mobility authentication and association.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
A kernel commit ("mac80211: fix FT roaming") started validating that the
STA entry is marked associated when adding a key. While this is needed
to fix some FT use cases with hardware crypto, it has a side effect of
breaking TDLS key configuration. Work around this by trying to
re-configure the key for the direct link after the STA entry has been
set with all information. In addition, try to tear down the link if
anything goes wrong in key configuration (if both attempts fail) or
enabling the link in the driver.
Signed-hostap: Jouni Malinen <j@w1.fi>
Enhance TDLS Setup Request processing to support both external and
internal TDLS setup for the case where concurrent TDLS initialization
results in the TDLS Setup Request from the peer getting accepted.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
wpa_tdls_peer_free() ended up getting called after some of the
parameters from the TDLS Setup Request frame were copied into the struct
wpa_tdls_peer information. This could result in continuing with cleared
information in case the new exchange was the one that is used in
concurrent initialization case or if this is to re-negotiated an
existing TDLS link. The driver would not be provided with all the peer
capabilities correctly in such case.
Fix this by moving the existing_peer check to happen before the
information from the TDLS Setup Request frame is copied.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If we accept the peer TPK M1 after having sent our TPK M1, we need to
reject TPK M2 from the peer to avoid going through two TDLS setup
exchanges.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If the previously started setup is terminated in case both peers
initiate TDLS link at more or less the same time, disable the old link
to allow the dummy station entry to be deleted from cfg80211 so that a
new entry can be added for the setup direction that will be allowed to
proceed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Add NL80211_CMD_UPDATE_FT_IES to support update of FT IEs to the
WLAN driver. Add NL80211_CMD_FT_EVENT to send FT event from the
WLAN driver. This will carry the target AP's MAC address along
with the relevant Information Elements. This event is used to
report received FT IEs (MDIE, FTIE, RSN IE, TIE, RICIE).
Signed-off-by: Deepthi Gowri <deepthi@codeaurora.org>
The information of the peer's VHT capability is required for the
driver to establish a TDLS link in VHT mode with a compatible peer.
Pass this information to the driver when the peer station is
getting added.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The contents of the peer's capability and extended capability
information is required for the driver to perform TDLS P-UAPSD and Off
Channel operations. Pass this information to the driver when the peer
station is getting added.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The information of the peer's HT capability and the QOS information is
required for the driver to perform TDLS operations. Pass this
information to the driver when the peer station is getting added.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
A TDLS Teardown frame with Reason Code 3 (Deauthenticated because
sending STA is leaving (or has left) IBSS or ESS) shall be transmitted
to all TDLS peer STAs (via the AP or via the direct path) prior to
transmitting a Disassociation frame or a Deauthentication frame to the
AP.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The reason code used for calculating the MIC should correspond to the
reason code with which the teardown frame is sent, as the receiver shall
use the one obtained in the frame for validating the MIC.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If an implicit TDLS set up request is obtained on an existing link or an
to be established link, the previous link was not removed. This commit
disables the existing link on a new set up request. Also,
wpa_tdls_reneg() function was invoking wpa_tdls_start() on an already
existing peer for the case of internal setup, which is incorrect. Thus
the invocation of wpa_tdls_start() is removed in wpa_tdls_reneg() and
also this function is renamed to wps_tdls_remove() as it does not
renegotiation rather shall remove the link (if any) for the case of
external setup.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need to have this check copied to each caller since this
needs to be done for every case when a new peer is being added.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Peer entries were getting added on every discover request from the peer,
thus resulting in multiple entries with the same MAC address. Ensures
that a check is done for the presence of the peer entry and reuse the
existing entry instead of adding a new one.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 6aaac006af modified the
pmksa_cache_init() prototype, but forgot to update the empty wrapper
function which is used when PMKSA caching is not included in the build.
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>
These fields do not use AES keywrap. Instead, they are protected with
management frame protection (and not included if PMF is disabled).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Expiry can always trigger a deauthentication, but otherwise,
deauthentication should only happen when the *current* cache entry is
removed and not being replaced. It should not happen when the current
PMK just happens to match the PMK of the entry being removed, since
multiple entries can have the same PMK when OKC is used and these
entries are often removed at different times.
This fixes an issue where eviction of the oldest inactive entry due to
adding a newer entry to a full cache caused a deauthentication when the
entry being removed had the same PMK as the current entry.
Signed-hostap: Dan Williams <dcbw@redhat.com>
Add pmf=1/2 to wpa_supplicant STATUS command output to indicate that PMF
was negotiated for the connect (1 = optional in this BSS, 2 = required
in this BSS).
Signed-hostap: Jouni Malinen <j@w1.fi>
This function is now unused after the last couple of commits that
removed the last uses, so remove this to keep code simpler since all
places that disassociate, can use deauthentication instead.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Even though the standard currently describes disassociation to be used
for RSN element mismatch between Beacon/Probe Response frames and
EAPOL-Key msg 3/4, this is unnecessary difference from other cases that
deauthenticate. In addition, there is no point in leaving the 802.11
Authentication in place in this case. To keep things simpler, use
deauthentication here to get rid of the only use of
wpa_sm_disassociate().
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
These values are used with WAPI and CCX and reserving the definitions
here reduces the number of merge conflicts with repositories that
include these functions.
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>
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 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>
cur_pmksa was left to NULL during the initial association. This can
result in unexpected behavior, e.g., in expiring PMKSA cache entries
since the current entry is not locked in that case. Fix this by updated
cur_pmksa when adding the initial PMKSA entry during msg 1/4 processing.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
If the PMKSA cache is full (i.e., 32 candidates have been seen in scan
results and have not yet expired) then any additional entries can
potentially evict the current/active entry (if it is the oldest entry),
which triggers a pointless local deauthentication. The supplicant
shouldn't replace the current/active entry if it is still valid, but
instead the oldest entry that is *not* the current/active one.
Signed-hostap: Dan Williams <dcbw@redhat.com>
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>
In case of !defined(IEEE8021X_EAPOL) the definition of the stub
pmksa_cache_get() in rsn_supp/pmksa_cache.h is not correct. This patch
adds the missing argument to the function definition to fix a
regression from commit 96efeeb66b.
Signed-hostap: Antonio Quartulli <ordex@autistici.org>
When looking for PMKSA cache entries to use with a new association, only
accept entries created with the same network block that was used to
create the cache entry.
Signed-hostap: Jouni Malinen <j@w1.fi>
This makes it clearer that the PMKSA caching entry gets removed from
the driver regardless of how the internal entry from wpa_supplicant
gets cleared. In practice, this call was skipped only for the case
when the entry for the current AP was being updated, so the previous
version was likely to work with all drivers. Anyway, it is cleaner
to explicitly remove the old entry even in that case before the new
entry gets added.
Signed-hostap: Jouni Malinen <j@w1.fi>
TPK will be needed to be able to generate FTIE MIC for the
teardown message, so maintain peer data for a bit longer in
case the teardown FTIE request comes back from the driver.
Use the wpa_tdls_add_peer function to allocate TDLS peer structures.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Use capability information to decide whether to perform a given TDLS
operation internally or through mgmt-frame Tx.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Before commencing setup, add a new STA entry to the driver representing
the peer. Later during setup, update the STA entry using information
received from the peer.
Extend sta_add() callback for adding/modifying a TDLS peer entry and
connect it to the TDLS state machine. Implement this callback for the
nl80211 driver and send peer information to kernel.
Mark TDLS peer entries with a new flag and translate it to a
corresponding nl80211 flag in the nl80211 driver.
In addition, correct TDLS related documentation in the wpa_driver_ops
structure.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Record the capabilities and supported rates of the TDLS peer during
link setup. These are given in the IEs passed in Setup Request and
Setup Response frames.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Disable the direct connection when a TDLS peer stops responding
to packets, as indicated by the "LOW ACK" event coming from a driver.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Allow sending a TDLS discovery request as a frame through the driver.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
When a driver does not implement the TDLS_TEARDOWN operation internally,
send an explicit TDLS link teardown frame to the driver.
Change all teardown calls to use these calling semantics.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
When a discovery request is received, add the peer to the TDLS peer
cache and send a response containing minimal data. Mandatory IEs in
the discovery response frame will be filled out by the driver.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Put glue code in place to propagate TDLS related driver capabilities to
the TDLS state machine.
If the driver doesn't support capabilities, assume TDLS is supported
internally.
When TDLS is explicitly not supported, disable all user facing TDLS
operations.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
A zero dialog-token is considered invalid by IEEE Std 802.11z-2010.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
Whenever PMK gets changed (e.g., due to re-authentication), all PMKSA
caching entries that were created using the previous PMK needs to be
replaced. Previously, only the entry for the current AP was cleared.
Flush the other entries based on network_ctx matches to get rid of the
OKC entries. These entries can then be re-creating using OKC with the
new PMK.
If a network configuration block is removed or modified, flush
all PMKSA cache entries that were created using that network
configuration. Similarly, invalidate EAP state (fast re-auth).
The special case for OKC on wpa_supplicant reconfiguration
(network_ctx pointer change) is now addressed as part of the
PMKSA cache flushing, so it does not need a separate mechanism
for clearing the network_ctx values in the PMKSA cache.
If the driver maintains its own copy of the PMKSA cache, we need to
clear an entry from the driver whenever wpa_supplicant is dropping
an old PMKSA cache entry.
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>
Add support to wpa_supplicant for device-based GTK rekeying. In order to
support that, pass the KEK, KCK, and replay counter to the driver, and
handle rekey events that update the latter.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The change to use wpa_dbg() in wpa_sm_parse_own_wpa_ie() could result
in a NULL pointer dereference if the function were called when WPA
state machine has not been initialized. While this cannot really
happen in practice, it is better to be prepared for that since that
was the case before the wpa_dbg() change.
This avoids reading past the end of the IE buffer should the FTIE
be too short. In addition, one debug hexdump was using uninitialized
pointer to the FTIE buffer, so fixed it to use the pointer from the
parse data.
If there is already a link the requested peer, request start of
renegotiation instead of completely new link. This seems to be needed
to allow some driver to accept the trigger for a new negotiation.
tdls_testing 0x80 can now be used to request wpa_supplicant to send
a TDLS Setup Request frame (i.e., try to initiate TDLS setup)
whenever a TDLS Setup Request frame has been received from a peer.
Blindly clearing all struct wpa_tdls_peer members is a risky
operation since it could easily clear pointers to allocated
memory, etc. information that really should not be removed.
Instead of hoping that new code gets added here to restore
the important variables, reverse the approach and only clear
structure members one by one when needed.
This allows the same code path to be used for both protected and
unprotected configurations to limit need for duplicated code in
both the driver and wpa_supplicant.
This adds code for validating that the same Key Lifetime is used
throughout TPK handshake and enables TPK lifetime expiration and
renewal/teardown. These part seem to be working, but the actual
handling of TDLS Setup Confirm and renewal are not fully
functional yet.
tdls_testing bits:
bit 3 = use short TPK lifetime (301 seconds)
bit 4 = use wrong TPK lifetime in TDLS Setup Response
bit 5 = use wrong TPK lifetime in TDLS Setup Confirm
These special test cases can be configured at run time with "wpa_cli
tdls_testing <value>" where <value> is an integer (either as a decimal
or as a hex value with 0x prefix) bitmap of special features with
following bits available at this point:
bit 0 = long frame (add dummy subelement to make FTIE very long)
bit 1 = use alternative RSN IE (different RSN capab value and no extra
replay counters)
bit 2 = send incorrect BSSID in Link Identifier of TDLS Setup Request
(e.g., 1 = long FTIE, 2 = different RSN IE, 3 = both of those)
This is disabled by default and can be enabled for the build by
adding the following line to .config:
CFLAGS += -DCONFIG_TDLS_TESTING
This converts number of debugging messages to use wpa_msg() in order
to allow the interface name to be shown with the messages.
A new function, wpa_dbg(), is introduced to allow
CONFIG_NO_STDOUT_DEBUG=y builds to remove the debug strings. This is
otherwise identical with wpa_msg(), but it gets compiled out if stdout
debugging is disabled.
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).
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.
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.
Commit 83935317a7 added forced
disconnection in case of 4-way handshake failures. However, it should
not have changed the case where the supplicant is requesting fallback
to full EAP authentication if the PMKID in EAPOL-Key message 1/4 is
not know. This case needs to send an EAPOL-Start frame instead of
EAPOL-Key message 2/4.
This works around a problem with APs that try to force PMKSA caching
even when the client does not include PMKID in (re)association request
frame to request it. [Bug 355]
There are no subdirectories in any of these directories or plans
for adding ones. As such, there is no point in running the loop
that does not do anything and can cause problems with some shells.
Instead of parsing the IEs in the callers, use the already existing
parser in wpa_ft.c to handle MDIE and FTIE from initial MD association
response. In addition, this provides more complete access to association
response IEs to FT code which will be needed to fix FT 4-way handshake
message 2/4.
This sets the FT Capability and Policy field in the MDIE to the values
received from the target AP (if available). This fixes the MDIE contents
during FT Protocol, but the correct value may not yet be used in initial
mobility domain association.
IEEE Std 802.11r-2008, 11A.4.2 describes FT initial mobility domain
association in an RSN to include PMKR1Name in the PMKID-List field
in RSN IE in messages 2/4 and 3/4. This makes the RSN IE not be
bitwise identical with the values used in Beacon, Probe Response,
(Re)association Request frames.
The previous versions of wpa_supplicant and hostapd did not add the
PMKR1Name value in EAPOL-Key frame and did not accept it if added
(due to bitwise comparison of RSN IEs). This commit fixes the
implementation to be compliant with the standard by adding the
PMKR1Name value into EAPOL-Key messages during FT 4-Way Handshake and
by verifying that the received value matches with the value derived
locally.
This breaks interoperability with previous wpa_supplicant/hostapd
versions.
If the PTK configuration prior to association fails, allow reassociation
attempt to continue and configure PTK after association. This is a
workaround for drivers that do not allow PTK to be configured before
association (e.g., current cfg80211/mac80211).
This avoids potential use of uninitialized stack memory when printing
out peer address based on SMK error message that does not include the
MAC address.
In addition, start ordering header file includes to be in more
consistent order: system header files, src/utils, src/*, same
directory as the *.c file.
This makes it clearer which files are including header from src/common.
Some of these cases should probably be cleaned up in the future not to
do that.
In addition, src/common/nl80211_copy.h and wireless_copy.h were moved
into src/drivers since they are only used by driver wrappers and do not
need to live in src/common.
This avoids passing the raw scan results into the RSN code and by
doing so, removes the only dependency on src/drivers from the
src/rsn_supp code (or from any src subdirectory for that matter).
This removes need for local configuration to ignore *.o and *~
and allows the src/*/.gitignore files to be removed (subdirectories
will inherit the rules from the root .gitignore).
There is no point in trying to continue if a 4-way handshake frame is
discarded or if PTK/GTK/IGTK configuration fails. Force the client to
disconnect in such a case to avoid confusing user by claiming the
connection was successfully completed.
IEEE 802.11r KDF uses key length in the derivation and as such, the PTK
length must be specified correctly. The previous version was deriving
using 512-bit PTK regardless of the negotiated cipher suite; this works
for TKIP, but not for CCMP. Update the code to use proper PTK length
based on the pairwise cipher.
This fixed PTK derivation for both IEEE 802.11r and IEEE 802.11w (when
using AKMP that specifies SHA-256-based key derivation). The fixed
version does not interoperate with the previous versions. [Bug 307]
