In case the P2PS PD Response includes the P2P Channel List attribute,
update the peer device supported channels and verify that the local
device has common channels with the peer (only a sanity check).
If the Operating Channel attribute is included in the response, check
that it is included in the intersection and store it as the peer's
operating frequency (so it could later be used in the join flow, etc.).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
In case the P2PS PD Request includes the P2P Channel List attribute,
update the peer device supported channels and check if we have common
channels with the peer that can be used for the connection establishment
based on the connection capabilities:
1. In case of P2PS PD Request with no common channels, defer
the flow unless auto accept equals true and the connection
capabilities equals NEW (in which case the channels would be
negotiated in the GO Negotiation).
2. In case of Follow up P2PS PD Request with no common channels,
reject the request unless the connection capability is NEW.
In addition, in case of a successful P2PS PD, save the device
operating frequency (so it can be later used for join flow, etc.).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Add operating channel selection and channel list processing similar to
that done when building GO Negotiation Request, i.e., consider the
currently used channels, configured channels, etc.
P2PS introduces a flow where a responder needs to provide channel data
without being previously aware of the current constraints, i.e., the
channels currently in use by other interfaces. To handle this, extend
the get_group_capability() callback to also handle channel selection
aspects of group capabilities.
In case there is an active P2P GO that is going to be used for the P2PS
PD, force its current operating frequency in the PD attributes.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
If a Provision Discovery Request is received for an unknown peer, a new
device entry is being added, but the flow continues without updating the
local p2p_device pointer, requiring to check the pointer value before
every access.
1. Change this, so once a device is added, the flow updates the local
p2p_device pointer and avoids the checks later in the flow.
2. If the device is not known even after adding it, skip the processing,
send the PD Response, and return.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
It is possible that p2p_build_prov_disc_resp() is called with a NULL
device entry, which might be dereferenced when calling
p2p->cfg->get_persistent_group() for the P2PS with persistent group
case. Fix this by checking the device pointer before accessing it.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Validate that all the required attributes appear in a P2PS PD Request,
and in addition, in the case of follow-on PD Request, check that the
given values match those of the original PD Request.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
When a follow-on PD request is received, peer should not send a
follow-on PD response except the case when the PD request status value
is 12 (Success: accepted by user). Previously, the wpa_supplicant
implementation behaved differently sending the follow-on PD Response on
any follow-on PD Request.
Fix the issue by adding the following changes:
1. Don't send PD Response if the follow-on PD Request status is
different than 12 (seeker side).
2. Don't wait for the follow-on PD Response if the follow-on PD
Request was sent with the status different than 12 (advertiser
side).
3. If the follow-on PD Request was sent with the status different
than 12 use the follow-on PD Request ACK as PD completion event
(advertiser side).
4. Notify ASP about the PD completion by sending P2PS-PROV-DONE with
the PD Request status (advertiser side).
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
It is expected that p2p_flush() should stop any ongoing p2p operation.
However, this was not the case with extended listen which was not
cancelled on p2p_flush() flows. Fix this, by cancelling the extended
listen in p2p_flush().
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
When using P2P invitation to re-invoke a persistent P2P group without
specifying the operating channel, query the driver for the preferred
frequency list, and use it to select the operating channel of the group.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Use NULL to indicate if the address is not available instead of fixed
00:00:00:00:00:00. wpas_p2ps_prov_complete() already had code for
converting NULL to that all zeros address for event messages.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Change P2PS P2P-PROV-SHOW-PIN/P2P-PROV-ENTER-PIN event notifications
on PD Request/Response handling to meet required P2PS behavior.
The new implemented scheme:
1. For a legacy P2P provision discovery the event behavior remains
without changes
2. P2PS PD, advertiser method: DISPLAY, autoaccept: TRUE:
Advertiser: SHOW-PIN on PD request replied with a status SUCCESS
Seeker: ENTER-PIN on PD response received with a status SUCCESS
3. P2PS PD, advertiser method: DISPLAY, autoaccept: FALSE:
Advertiser: SHOW-PIN on PD request replied with a status
INFO_CURRENTLY_UNAVAILABLE
Seeker: ENTER-PIN on Follow-on PD request with a status
SUCCESS_DEFERRED
4. P2PS PD, advertiser method: KEYPAD, autoaccept: TRUE/FALSE:
Advertiser: ENTER-PIN on PD request replied with a status
INFO_CURRENTLY_UNAVAILABLE
Seeker: SHOW-PIN on PD response received with a status
INFO_CURRENTLY_UNAVAILABLE
This change in behavior breaks the existing test cases
p2ps_connect_keypad_method_nonautoaccept and
p2ps_connect_display_method_nonautoaccept. Those will be fixed in a
followup commit.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add a function to compute the group common frequencies, and
use it to update the group_common_frequencies as part of the
channel switch flows.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Add ieee80211_freq_to_channel_ext() conversion function into
ieee802_11_common.c. This function converts freq to channel and
additionally computes operating class, based on provided HT and VHT
parameters.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
It looks like the compiler version used in Android 5.0 warns about
potentially uninitialized oper_freq variable in these debug messages.
That is not really valid since this code path can be reached only if
found != 0 and in such a case, oper_freq is set. Anyway, it seems better
to avoid compiler warnings, so add an unnecessary initialization for
oper_freq for now.
Signed-off-by: Jouni Malinen <j@w1.fi>
When processing a GO Negotiation Request and Response, if local driver
supports the preferred channel list extension, then:
- Check if peer's preference for operating channel is already included
in our preferred channel list and if so, take the oper_channel as is.
- If peer's preference for operating channel is not in local device's
preferred channel list and peer device has provided its preferred
frequency list in the GO Negotiation Request/Response, then find a
channel that is common for both preferred channel lists and use it
for oper_channel.
- If peer's preference for operating channel is not in local device's
preferred channel list and peer device doesn't use preferred channel
list extension, i.e., no preferred channel list in GO Negotiation
Request/Response, then look for a channel that is common for local
device's preferred channel list and peer's list of supported channels
and use it for oper_channel.
- In case no common channel is found, use the peer's preference for
oper_channel as is.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds a callback function that can be used from the P2P module to
request the current preferred list of operating channels from the
driver.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add an extra condition to omit operating channel preference when
building GO Negotiation Response. If the local device supports the
preferred frequency list extension, then when sending a GO Negotiation
Response frame, advertise the preferred operating channel unless local
device is assuming the P2P Client role and has an empty preferred
frequency list, in which case local device can omit its preference for
the operating channel.
This change helps make use of the preferred frequency list and the
calculated best channel for both negotiating parties of the P2P
connection.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When sending a GO Negotiation Request, advertise the preferred frequency
list in a new vendor specific IE. This can be used to extend the
standard P2P behavior where a single preferred channel can be advertised
by allowing a priority list of channels to be indicated.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If the driver supports the preferred frequency list extension, use this
information from the driver when no explicitly configured preference
list (p2p_pref_chan) is present for P2P operating channel selection.
This commit adds this for GO Negotiation and Invitation use cases.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Report the feature capability on P2PS-PROV-START and P2PS-PROV-DONE
ctrl-iface events. A feature capability value is specified as
'feature_cap=<hex>' event parameter, where <val> is a hexadecimal
string of feature capability bytes in a PD Response frame.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
On PD Request/follow-on PD Request preparation set a feature capability
CPT value of PD context.
On PD Request processing use a request CPT and service advertisement
CPT priority list to select a feature capability CPT of PD Response.
On follow-on PD Request processing use a request CPT and a CPT priority
list in PD context to select a CPT value of follow on PD Response.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add a parameter allowing to specify a value of Coordination
Protocol Transport to P2PS_PROVISION and P2PS_PROVISION_RESP commands.
Extend the p2ps_provision structure to contain cpt_priority and
cpt_mask properties and initialize them on a P2PS PD request command.
The format of the parameter:
cpt=<cpt>[:cpt]
where <cpt> is CPT name e.g. UDP or MAC. The CPT names are listed
according to their preferences to be used for a specific P2PS session.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add Coordination Transport Protocol parameter to P2P_SERVICE_ADD
asp command.
Extend p2ps_advertisement structure to contain CPT priorities
and a supported CPT bitmask.
The format of the new parameter:
cpt=<cpt>[:<cpt>]
where <cpt> is a name of the Coordination Protocol Transport.
This implementation supports two CPT names: UDP and MAC.
The order of specified CPTs defines their priorities where
the first one has the highest priority.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Previously, one timeout per process (by default every 30 seconds) was
used P2P peer expiration and another per-interface timeout (every 10
seconds) was used to expire BSS entries. Merge these to a single
per-process timeout that triggers every 10 seconds to minimize number of
process wakeups due to periodic operations.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible for the previously set SSID to remain in place between
test cases (e.g., in sequence "p2ps_connect_adv_go_persistent
p2p_set_ssid_postfix") and the P2P SSID postfix not getting used
properly. Make this less likely to occur by clearing the old SSID in
p2p_flush().
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
One possible outcome of the P2PS PD is P2P GO/P2P Client. In this case,
one peer becomes a P2P GO and the P2P Client joins it. Since multiple
GOs may run simultaneously on the same P2P Device, the P2P Client should
join using the intended interface address.
To be able to find the device by the intended interface address, save it
during the PD.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
If a device may be an explicit GO, it adds the GO details in the PD
Request. First, we try to reuse an active GO. If it is not present, we
try to reuse a non-active persistent group. In the latter case, if a
dedicated P2P interface is needed, the intended address should be that
of the pending interface. However, the wpas_get_go_info() provided the
ssid->bssid address, which is the address of the P2P device. This might
result in an incorrect intended interface attribute in the PD Request in
case a separate group interface is used.
Fix this by setting group_iface variable to true only if a dedicated
interface should be used and set the attribute accordingly.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Validate the PD Response frame contents more thoroughly when it is used
for P2PS.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When persistent group is used and the peer is GO in this group,
intended interface attribute should be added to PD request/response.
Not doing so violates the spec.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When device A sends PD response to device B, device A should save
wps_prov_info for device B. Not doing so would result in a redundant and
incorrect PD flow, e.g., when upon PROV-DISC-DONE event device B starts
a GO and device A should join it.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
In case of a P2PS PD, allow keypad, display, and P2PS WPS config
methods. For a legacy PD, allow keypad, display, and pushbutton methods.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add 'else if' to P2PS status verification to prevent a redundant
condition checking. The first 'if' condition is true only if
status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED.
while the second condition checks:
status != P2P_SC_SUCCESS &&
status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
status != P2P_SC_SUCCESS_DEFERRED
Thus, the two conditions are mutually exclusive and 'else if' can be
used if this case.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Delete redundant comparison of msg.wps_config_methods with
dev->req_config_methods in p2p_process_prov_disc_resp() since it's
already done early in this function. Also, the second comparison
doesn't make too much sense: it can happen after a possible
p2p_reset_pending_pd() call setting dev->req_config_methods to 0.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When wpa_supplicant receives a PD Response with reject status it
generated P2P-PROV-DISC-FAILURE event without adv_id and adv_mac
parameters. Fix this by adding these parameters to the
wpas_prov_disc_fail() function call.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Fix a condition when Advertised Service Info Attribute is added to
a probe response in p2p_buf_add_service_instance(). The issue is
that a 'found' value is increased even if 'test' and 'adv->hash' hashes
are different. As result 'found' may have a non-zero value when an
attribute data length is 0. In this cause an empty attribute is about to
be added. Fixing it by eliminating 'found' and checking 'total_len'
containing a real number of bytes added to Advertised Service Info
Attribute.
This fixes an issue from commit 50a9efe713
('P2PS: Fix Probe Response frame building in error cases').
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
It was possible for the P2PS Probe Response frame to go out on the
channel on which a Probe Request frame was reported even when we are
just about to start Listen mode on another channel. This could result in
the peer device using incorrect channel for us. Fix this by skipping the
response in this special case while waiting for Listen mode to start.
This showed up as a hwsim test failure with test sequence "gas_fragment
p2ps_connect_display_method_nonautoaccept" in cases where the dev[0]
Listen channel was not same as the AP operating frequency in the GAS
test.
Signed-off-by: Jouni Malinen <j@w1.fi>
The construction used here to figure out the offset of variable length
IEs in Probe Request frames was a bit odd looking and resulted in a
warning from a static analyzer, so replace it with more standard use of
offsetof().
Signed-off-by: Jouni Malinen <j@w1.fi>
p2p_process_nfc_connection_handover() allocates msg memory in the parser
and might return before memory is released if the received message is
not valid.
Signed-off-by: Ben Rosenfeld <ben.rosenfeld@intel.com>
org.wi-fi.wfds service is not a replacement for non-WFA service matches.
Do not try to replace the results with that if there is not sufficient
room for the response. Instead, reply with all the matching services
that fit into the message. org.wi-fi.wfds is the first entry in the list
(if matching request/service is present), so it won't get overridden by
other services.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The service hash for org.wi-fi.wfds is supposed to match only if the
device has a WFA defined org.wi-fi.wfds.* service. Verify that before
adding org.wi-fi.wfds to the response.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Probe Response building is already doing service matching and there is
no need to do this in both places, so simplify the p2p_reply_probe()
implementation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When doing initial processing of Probe Request frame service hashes, the
previous implementation dropped all other hash values if a hash for
org.wi-fi.wfds was included. This is not correct, since that is not a
full wildcard of all services (it only matches WFA defined
org.wi-fi.wfds.* services).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This "wildcard" match is for WFA specified org.wi-fi.wfds.* services,
not for all services. Verify that there is a really matching service
being advertised instead of assuming this "wildcard" matches if any
services are advertised.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The org.wi-fi.wfds "wildcard" is not a full wildcard of all service
names and as such, it must not remove other service name hash values
from the Probe Request frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
p2ps_gen_hash() has a limit on service names based on the temporary
buffer from stack. Verify that the service name from the local P2P_FIND
command is short enough to fix into that buffer.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Quoting P2PS specification: "If multiple Service Hash values are
included in the Probe Request frame, then the ASP shall find a match for
each Service Hash, and it shall send a Probe Response frame with the
information listed in this section for all matched Service Hashes." This
commit changes handling of wildcard hash matching by adding a
wildcard 'org.wi-fi.wfds' info together with the other hash matches.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add auxiliary functions to write a single advertised service info record
into a wpabuf and to find P2PS wildcard hash in a received hash
attribute. Re-factor p2p_buf_add_service_instance() function to allow
adding new wildcard types in future commits.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Avoid using p2p_data::query_hash for both Probe Request frame processing
and for hashes specified by p2p_find. It's resolved by use of local
query_hash and query_count variables in p2p_reply_probe().
Since p2p_data::query_hash is used only for seek hash values rename
p2p_data::query_hash to p2ps_seek_hash.
Delete p2p_data::query_count since it's not needed anymore.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Commit 86bd36f0d5 ('Add generic mechanism
for adding vendor elements into frames') introduced a mechanism to add
vendor elements into various frames, but missed the addition to the
Invitation Response frame. This commit addresses the same.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This variable is used locally only in the p2p_reply_probe() function.
The value of this variable is valid only in the context of the single
Probe Request message handling and doesn't make much sense in p2p
context.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Free a PD context with a function encapsulating both os_free() call and
setting a PD context pointer to NULL.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
A P2P Client may be discoverable and reply to Probe Request frames,
while at the same time the P2P GO would also be discoverable and include
the P2P Client information in the P2P Group Info attribute of the Probe
Response frames.
If a seeker constantly hears the Probe Response frames from a P2P Client
and then from the GO, but handles them in the opposite order (due to
scan results ordering), the more valuable Probe Response frame from the
P2P Client will be ignored. Fix this by defining a threshold (1 second)
during which the direct Probe Response frame will be preferred over the
information acquired from the GO and will not be considered as old.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When adding group clients to the P2P peer list, use the driver provided
BSS entry timestamp instead of the current time. Otherwise, the time
comparison which is made in p2p_add_device() doesn't make sense.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
If the RX frequency of the Probe Request frame is known, specify it when
sending the Probe Response frame. This is needed when the Probe Request
frame is received on another virtual interface, for example, when a GO
or P2PS client are discoverable on the group operating channel.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Return P2P_PREQ_PROCESSED instead of P2P_PREQ_NOT_PROCESSED on
a successful Probe Request frame handling in p2p_reply_probe().
Verify a return value of p2p_reply_probe() in p2p_probe_req_rx()
and continue a pending invitation/connection flow only if the
Probe Request frame is from an expected P2P peer.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
In some cases, Probe Request frames can be received by a peer not only
on a listen channel. In this case an additional rx_freq parameter
explitly contains a Probe Request frame RX frequency. In case rx_freq is
set to 0, a Probe Request frame RX channel is assumed to be our own
listen channel (p2p->cfg->channel).
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Add operating class 125 (channels 149..169) to the list of P2P supported
channels. This allows the 5 GHz channels 161 and 169 to be used for P2P
GO when those channels are allowed for AP mode in the current regulatory
domain.
Signed-off-by: Amr BEN ABDESSALEM <amrx.ben.abdessalem@intel.com>
Add GO Intent information of connecting device in GO Negotiation Request
event which will help applications to decide its own GO intent value in
advance and can avoid failure cases when both devices use GO Intent 15
depending on application requirement.
Signed-off-by: Mayank Haarit <mayank.h@samsung.com>
Do not add a P2P IE when a station interface is trying to associate
to an AP or P2P GO that publishes a P2P IE but does not include
a P2P manageability attribute.
This addresses an interoperability issue that was reported in
https://bugzilla.kernel.org/show_bug.cgi?id=96471, where a P2P GO
rejects association from a station interface without a specified
reason.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This enforces variable length strings Manufacturer, Model Name, Model
Number, and Serial Number to be within the maximum length defined in the
WSC specification. While none of the existing users for these within
hostapd/wpa_supplicant had problems with longer strings, it is good to
ensure the strings are not longer to avoid potential issues at higher
layer components.
Signed-off-by: Jouni Malinen <j@w1.fi>
Check the element length in the parser and remove the length field from
struct ieee802_11_elems since the only allowed element length is one.
Signed-off-by: Jouni Malinen <j@w1.fi>
This program can be used to run fuzzing tests for areas related to P2P
message parsing and processing. p2p-fuzzer allows data files to be used
to inject Probe Response and Action frames for processing by the P2P
module.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes it more obvious that the wps_parse_msg() bounds checking is
used to verify that there is sufficient space in the P2P buffer for the
secondary device types.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This modifies couple of code segments that replaced control characters
in strings with '_' to use a common helper function.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
While none of the current users of msg.persistent_ssid{,_len} would have
issues with too long SSID value, it is safer to enforce bounds checking
on the SSID while parsing the attribute to avoid any potential issues in
the future.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This fixes a possible memcpy overflow for P2P dev->oper_ssid in
p2p_add_device(). The length provided by the peer device (0..255 bytes)
was used without proper bounds checking and that could have resulted in
arbitrary data of up to 223 bytes being written beyond the end of the
dev->oper_ssid[] array (of which about 150 bytes would be beyond the
heap allocation) when processing a corrupted management frame for P2P
peer discovery purposes.
This could result in corrupted state in heap, unexpected program
behavior due to corrupted P2P peer device information, denial of service
due to process crash, exposure of memory contents during GO Negotiation,
and potentially arbitrary code execution.
Thanks to Google security team for reporting this issue and smart
hardware research group of Alibaba security team for discovering it.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Delete all ASP serice advertisement on wpas_p2p_service_flush similarly
to Bonjour and UPnP services.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
It was possible for the GO Negotiation Response (failure) TX status to
be processed at a point where there is no P2P timeout to continue
search. Avoid stopping the ongoing search operation by explicitly
restarting it from this callback.
Signed-off-by: Jouni Malinen <j@w1.fi>
The optional freq=<MHz> can now be used with the P2P_FIND command to
specify a single channel to scan during the first round of P2P search.
For example, this can be used to replace the full initial scan with a
single channel scan of a known operation channel.
Signed-off-by: Daichi Ueura <daichi.ueura@sonymobile.com>
This reverts commit 3df2f4fe99 ('P2P:
Remove unused P2P_SCAN_SPECIFIC') with a modification to fit the current
code base.
Signed-off-by: Daichi Ueura <daichi.ueura@sonymobile.com>
It is possible for an Action frame TX operation to be stopped in a way
that results in the TX status callback function not being called. This
could happen, e.g., when P2P_STOP_FIND was issued while waiting for PD
Response TX status. This specific case ended in leaving
p2p->send_action_in_progress set to 1 and that ending up stopping a
future TX operation when p2p_send_action_cb() gets called with
p2p->pending_action_state == P2P_NO_PENDING_ACTION.
This could result in reception of a fragmented service discovery
response failing due to the GAS sequence getting stopped when receiving
TX callback for the first GAS comeback request. That sequence could be
hit in mac80211_hwsim tests when p2p_listen_and_offchannel_tx was
followed by p2p_service_discovery_fragmentation (even after a long time
since this was on dev1 and there could be even 10 minutes between these
test cases).
Fix this issue by clearing send_action_in_progress whenever stopping
pending P2P operation with p2p_stop_find (or P2P_FLUSH for that matter).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If p2p_find_timeout triggers after starting SD but before getting TX
status for send action, unwanted search could get triggered again when
TX status arrives though p2p_find_timeout moved the state to P2P_IDLE by
then. p2p_continue_find() would then move the state to P2P_SEARCH again.
Do not trigger the find operation from this context if state is
P2P_IDLE to avoid this.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Do not claim to change the Listen channel in a debug message when
previously configured channel prevents this. In addition, fix a typo in
another related debug print.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
p2p_timeout_prov_disc_req is getting triggered in P2P_IDLE,
P2P_SEARCH and P2P_LISTEN_ONLY states. Retry logic should not be
limited to only P2P_IDLE state.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
During service discovery if P2P_FIND times out, P2P_FIND_STOPPED event
is sent to upper layers to allow follow up P2P_FIND commands. This needs
to be done also in case an SD was in progress during the find operation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This introduces a P2P module callback function that will be used to
create the pending P2PS group after sending PD Response and receiving
ACK status for it.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When the peer device is trying to form a new group despite having
old persistent group with same roles, remove the stale persistent
group.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This extends wpas_p2p_prov_disc() implementation to accept P2PS
parameters. None of the callers are yet using this functionality; the
following commit introduces a user.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds a data structure for storing P2PS PD information and code to
add the related attributes into PD Request. The actual operation to
trigger this behavior will be added in a separate commit.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add support to parse received GAS requests for ASP services and
prepare GAS responses accordingly.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
In addition, add a new P2P_SERVICE_REP command that can be used to
replace existing ASP advertisements.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This make it easier to use wpa_s->p2p_group without having to check
whether there is a group initialized on this wpa_s instance.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This provides additional WPS definitions and rules for negotiating use
of P2PS default PIN configuration method.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
P2PS seek strings can now be specified in the P2P_FIND control interface
command with one or more optional "seek=<str>" parameters.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
