Commit graph

2216 commits

Author SHA1 Message Date
Jouni Malinen
31fa4c6d98 Remove unused ieee802_11_send_deauth() 2010-08-25 21:18:54 +03:00
Jouni Malinen
ef546700e2 WPS: Optimize M2 processing in AP Setup Locked case
There is no need to process the public key and generate keys if
the AP is going to reject this M2 anyway. This limits effect of
potential CPU DoS attacks in cases where AP PIN is disabled.
2010-08-24 16:42:26 +03:00
Jouni Malinen
5a1cc30f1a WPS: Add support for dynamic AP PIN management
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.
2010-08-24 16:35:37 +03:00
Jouni Malinen
944814106e WPS: Do not disable AP PIN permanently, only slow down attacks
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.
2010-08-24 15:24:05 +03:00
Jouni Malinen
035cc69d98 WPS: Use WSC_NACK if no device password is known on M2 RX
This can happen on the AP if the AP PIN is not configured and
the client tries to go through the protocol instead of just using
Registrar mode to receive M1 from the AP. It is cleaner to send
out the WSC_NACK instead of just stopping the protocol.
2010-08-24 12:56:11 +03:00
Masashi Honma
509a39727f WPS: Fix unused variable warning
The wpa_supplicant compilation without CONFIG_WPS option results in
messages below.

scan.c: In function 'wpa_supplicant_scan':
scan.c:246: warning: unused variable 'wps'

This trivial patch erases this warning.
2010-08-20 09:44:50 +03:00
Jouni Malinen
8cbd92ee29 EAP-FAST server: Add I-ID into PAC-Info
This indicates that the peer identity is associated with the
credential and will be required to match with the identity used
during authentication when the PAC is used (RFC 5422, 4.2.4).
2010-08-19 21:16:19 +03:00
Jouni Malinen
f9cd8587fb dbus: Deauthenticate instead of disassociate on disconnect command
This clears up authentication state in the driver and in case of
cfg80211, unlocks the BSS entry for the previously used AP. The
previous commit cf4783e35f changed
only the ctrl_iface DISCONNECT command behavior; this new commit
does the same for D-Bus commands.
2010-08-18 21:27:30 +03:00
Samuel Ortiz
7e26053a2c sme: Check for prev_bssid from sme_event_disassoc
wpa_s->bssid is already cleared by mark_disassoc() when we're getting the
disassociation event for the case where wpa_supplicant requested
disassociation. wpa_s->sme.prev_bssid holds the BSSID we need to check
for, so use that instead.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-08-18 21:23:26 +03:00
Jouni Malinen
2e75a2b3a6 Add more debug info on deauth/disassoc events and commands 2010-08-17 21:04:38 +03:00
Jouni Malinen
43dd46b3bc Fix memory leak in AP WEP key configuration 2010-08-17 21:04:07 +03:00
Samuel Ortiz
cb1583f64b sme: Try all authentication algorithms when the first one fails
When passing several authentication algorithms through auth_alg, we
should try all of them when the first one fails. The wext driver goes
through the connect nl80211 command and the retries are then handled by
the kernel. The nl80211 doesn't and we have to handle that from
userspace.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-08-17 16:39:33 +03:00
Paul Stewart
cb30b297bd nl80211: Ignore "DEAUTH" messages from APs we are not associated to
DEAUTH messages can come from a number of different sources. The one
that's hurting us currently is DEAUTH netlink messages coming to us
from compat-wireless in response to local_state_change DEAUTH messages
we sent as a part of cleaning up state in driver_nl80211's
clear_state_mismatch() function. However, DEAUTH messages can come
from a variety of unwanted sources, including directed denial-of-service
attacks (although MAC verification doesn't place that high a barrier),
so this validation is actually generically useful, I think.

The downside to this method is that without a kernel based approach
"iw dev wlan0 link" no longer works correctly after clear_state_mismatch()
is done.  This will be pursued with the kernel folks.
2010-08-16 21:27:26 +03:00
Daniel Gryniewicz
6c78ae1443 Fix RSN preauth candidate list clearing to avoid segfaults
Commit c5b26e33c1 broke the processing
of the candidate list entries when an old entry was either removed or
reused. The entry needs to be removed from the list to avoid leaving
pointers to freed memory.

http://bugs.gentoo.org/show_bug.cgi?id=330085
http://w1.fi/bugz/show_bug.cgi?id=372
2010-08-14 19:01:14 +03:00
Johannes Berg
ba2d0d7d68 nl80211: Don't pass ctx to wpa_driver_nl80211_init_nl
Currently, we don't use the sock_ctx that we get passed by eloop, so
don't assign it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2010-08-11 18:33:24 +03:00
Johannes Berg
f48ffe4364 nl80211: Remove unused pending_send_action
This variable is assigned only once and never tested, so basically
unused.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2010-08-11 18:33:02 +03:00
Jouni Malinen
77895cd937 Add a mechanism to insert notes to wpa_supplicant debug log
This can be used to insert information from external programs to the
wpa_supplicant debug log.
2010-08-11 18:07:22 +03:00
Jouni Malinen
92afbe9d63 WPS: Make DH debug prints easier to understand 2010-08-11 18:02:39 +03:00
Jouni Malinen
15ed5535ad nl80211: Show remain-on-channel duration in debug output 2010-08-11 18:02:19 +03:00
Jouni Malinen
26af9dcaef nl80211: Try mode changes multiple times to avoid some races
cfg80211/mac80211 seems to be unwilling to change interface mode in
some cases. Make these less likely to cause problems by trying the
changes up to 10 times with 100 msec intervals.
2010-08-11 18:01:37 +03:00
Jouni Malinen
f3f0f648d7 wpa_cli: Clean up redrawing and filter out BSS added/removed events 2010-08-11 17:58:04 +03:00
Jouni Malinen
6195adda9b WPS: Allow AP to start in Enrollee mode without AP PIN for probing
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).
2010-07-26 18:12:08 -07:00
Jouni Malinen
67ccef7e6c FT: Send RRB data directly when managed by same hostapd process
This makes it easier (and a bit faster) to handle multiple local
radios with FT. There is no need to depend on l2_packet in that
case since the frame can be delivered as a direct function call.
2010-07-25 20:30:12 -07:00
Jouni Malinen
08b19cb404 WPS: Limit WPS ER event_id < 2^31 bits to avoid issues with atoi()
Previously, large event_id values (> 2^31) resulted in integer
overflow that would make ER drop all events from the AP.
2010-07-20 22:56:58 -07:00
Jouni Malinen
7f6ec672ea EAP server: Add support for configuring fragment size 2010-07-20 22:56:10 -07:00
Jouni Malinen
f3a3e6987e WPS: Allow fragment size to be configured 2010-07-20 22:55:39 -07:00
Jouni Malinen
24f7694062 Remove get-first-scan-results-before-request optimization
This has already been disabled in most use cases and can result
in problems with some drivers, so better just remove it completely.
2010-07-18 16:11:03 -07:00
Jouni Malinen
4e22adb4d1 WPS: Move from WLAN_STA_MAYBE_WPS to WLAN_STA_WPS based on EAP messages
If the station does not include WSC IE in Association Request, it
is marked with WLAN_STA_MAYBE_WPS flag. We can update that to
WLAN_STA_WPS if the station uses either of the WPS identity strings.
This enables some workarounds for WPS stations.
2010-07-18 16:10:08 -07:00
Jouni Malinen
9301f6515e WPS: Reduce client timeout with EAP-WSC to avoid long wait
This works around issues with EAP-Failure getting lost for some reason.
Instead of waiting up to 60 seconds on a timeout, 30 second timeout is
now used and whenever the provisioning step has been completed (either
successfully or unsuccessfully), this timeout is reduced to 2 seconds.
2010-07-18 16:09:30 -07:00
Jouni Malinen
3239706303 WPS: Force disconnection after provisioning step
This works around some problems where the station is unable to disconnect
for some reason (e.g., if EAP-Failure gets dropped).
2010-07-18 16:08:52 -07:00
Jouni Malinen
9b7124b27f Add some more debug for driver events 2010-07-17 20:33:34 -07:00
Jouni Malinen
5bc0cdb721 Ignore scan results in wpa_supplicant AP mode
This is needed to avoid trying to reassociate based on new scan
results when using wpa_supplicant to control AP mode. This could
happen if something external triggered the driver to run a scan.
2010-07-17 20:32:25 -07:00
Jouni Malinen
979b988ed6 WPS: Do not allow Label and Display config methods to be enabled
It is unclear which PIN is used if both Label and Display config
methods are advertised. Avoid this by not allowing such configuration.
2010-07-17 20:30:49 -07:00
Jouni Malinen
4436274bef SME: Do not skip initial scan request
When SME is in wpa_supplicant (mac80211), we need to make sure that
the kernel code has valid BSS entry for the AP. In some cases it
seemed to be possible to end up not having current information in
cfg80211 or mac80211 which can result to association failures. Avoid
this by always running through the scan request before initial
connection attempt.
2010-07-17 20:28:22 -07:00
Jouni Malinen
6e3f7173f1 SME: Retry scan after authentication failure
This is needed to avoid getting stuck if driver fails authentication
request for some reason.
2010-07-17 20:27:19 -07:00
Jouni Malinen
3f967fe055 Verify that l2_packet is initialized before notification call
It is possible that l2_packet is not used with wpa_supplicant
in some cases, so better make sure we do not end up notifying
l2_packet code about authentications unless it was actually
initialized in the first place.
2010-07-17 20:26:47 -07:00
Jouni Malinen
69a6b47aa0 Fix wpa_supplicant AP mode to ignore EAPOL Supplicant port callback
This is needed to avoid setting EAPOL PAE port status incorrectly
when using wpa_supplicant to control AP mode operations.
2010-07-17 20:25:41 -07:00
Jouni Malinen
c01106f3e8 WPS: Add more debug info for DH keys 2010-07-17 20:23:55 -07:00
Jouni Malinen
a33c5f96b8 Fix a typo in Disassociation frame building
This did not really change any behavior since Deauthentication frame
uses the same format.
2010-07-17 20:23:20 -07:00
Jouni Malinen
b3b2da770e Define Public Action and Vendor-specific Public Action frames 2010-07-17 20:22:40 -07:00
Jouni Malinen
950388f745 IEEE 802.11u GAS defines 2010-07-17 20:21:39 -07:00
Jouni Malinen
4796272f5f nl80211: show TX status (ack) in debug log 2010-07-17 20:17:43 -07:00
Jouni Malinen
e9501a07c6 FT: Fix RRB messages to use correct endianness
The pairwise cipher field is supposed to be little endian, but the
message building functions did not swap the bytes on big endian
hosts while the message processing functions did. Fix this by using
little endian byte order in both places.
2010-07-17 17:48:32 -07:00
Jouni Malinen
79614ec55b bgscan learn: Remove forgotten debug printf 2010-07-10 19:59:31 -07:00
Jouni Malinen
3b7442e5fe bgscan learn: Mark BSSes that show up in the same scan as neighbors 2010-07-10 18:33:22 -07:00
Jouni Malinen
2e2a8d073d bgscan learn: Probe one new channel at a time to find APs
This allows APs to be found from channels that have not previously
been observed to contain APs for this ESS.
2010-07-10 18:09:41 -07:00
Jouni Malinen
fc480e88bf bgscan learn: Learn BSS information based on previous scans
Store list of all discovered BSSes in the ESS and on which frequencies
they have been seen. Use this information to dynamically generated the
list of channels for background scans.
2010-07-10 17:41:16 -07:00
Jouni Malinen
2e8d6ae32e bgscan learn: Add data file for storing learned network information 2010-07-10 16:05:31 -07:00
Jouni Malinen
c4d71c2505 bgscan: Add starting point for more advanced bgscan module: learn
This is based on the bgscan "simple" module and this initial commit
does not add any new functionality.
2010-07-10 15:55:48 -07:00
Jouni Malinen
c2594c3677 bgscan: Provide scan results to the notify_scan handler 2010-07-10 15:43:44 -07:00