The read() callback of attributes returns ssize_t and not size_t. Fix
this, which also fixes a Coverity warning.
Fixes Coverity CID 197457
Fixes#14958
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This adds BT_GATT_DISCOVER_ATTRIBUTE which can be used to discover any
type of attribute in a given range.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Those are not considered Descriptors and shall be discovered with
use of BT_GATT_DISCOVER_CHARACTERISTIC.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
When discovering descriptor Find Information procedure is used which
does not allow any filtering by the server so it will return all
attributes in the given range including services and characteristics.
Fixes#14265
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
CCC cfg value was not being cleared on disconnection of a non bonded
peer if another peer was connected, had non zero value and occurred
earlier in the ccc cfg array.
Signed-off-by: Nick Ward <nick.ward@setec.com.au>
This consolidates code for finding a CCC config in a helper function
thus reducing the amount of duplicated code.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This adds another helper macro called BT_GATT_CCC_MANAGED which can be
used to set 2 new callbacks:
- cfg_write: Which application can set if it wants to manage writes to
CCC configuration.
- cfg_match: Which application can set if it wants to manage matching
CCC configuration when notifying/indicating.
BT_GATT_CCC_MANAGED retains the ability of saving peer configuration
on storage making it useful for clients which are only interrested in
managing the CCC configuration but not the storage itself.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Prevent temporary strings from being printed incorrectly if they go out
of scope before being processed by logger.
Signed-off-by: Filip Kubicz <filip.kubicz@nordicsemi.no>
There are issues using lowercase min and max macros when compiling a C++
application with a third-party toolchain such as GNU ARM Embedded when
using some STL headers i.e. <chrono>.
This is because there are actual C++ functions called min and max
defined in some of the STL headers and these macros interfere with them.
By changing the macros to UPPERCASE, which is consistent with almost all
other pre-processor macros this naming conflict is avoided.
All files that use these macros have been updated.
Signed-off-by: Carlos Stuart <carlosstuart1970@gmail.com>
This adds BT_GATT_ENFORCE_CHANGE_UNAWARE option which when enable
returns -EAGAIN when notifying or indicating if the client is
change-unware to conform with following statement on the spec:
'BLUETOOTH CORE SPECIFICATION Version 5.1 | Vol 3, Part G page 2350:
Except for the Handle Value indication, the server shall not send
notifications and indications to such a client until it becomes
change-aware.'
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
BLUETOOTH CORE SPECIFICATION Version 5.1 | Vol 3, Part G page 2405:
'For clients with a trusted relationship, the characteristic value
shall be persistent across connections. For clients without a
trusted relationship the characteristic value shall be set to the
default value at each connection.'
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This implement Robust Caching which is mandatory when Database Hash and
Service changed Characteristics are supported.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This implements the Database Hash characteristic which generates a hash
with the contents of certain attributes. The generation of hash is
usually offloaded to the systemwq using a delayed work so that when
application register multiple services only one hash needs to be
calculated.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The Client Supported Features characteristic is used by the client to
inform the server which features are supported by the client.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This adds bt_gatt_write_response_cb works similarly to
bt_gatt_notify_cb which can take a callback to be called when the PDU
is considered transmitted over the air.
Note: This can also be used to disable the ATT flow control which would
blocks sending multiple commands without wainting their transmissions.
Fixes#11558
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
When using bt_gatt_discover with BT_GATT_DISCOVER_CHARACTERISTIC the
read callback would be set to bt_gatt_attr_read_chrc which would attempt
to access the next attribute which in this case would not be set since
the value attribute is no fetched by the discovery, the spec actually
omit the value handle saying it should always be the first attribute to
appear after the characteristic thus we can assume it to be handle + 1.
Fixes#12159
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The Code need to be align after introduction of stream codec to
setting serialization subsystem.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
There is not an easy way to relate an application's user_data to a
connection. One way is to save a pointer to bt_conn in the
application's user_data array upon connection establishment.
Each connection related callback function will have to loop for all
user_data and compare the saved pointer to the passed bt_conn
pointer. This is inefficient if there are many callback activations
during the connection.
This change makes the internal bt_conn mapping function accessible to
applications in conn.h. The function name is changed to
bt_conn_index() to clearly indicate that the function returns an
index of an array.
Add an ASSERT to catch illegal parameter.
Signed-off-by: Kim Sekkelund <ksek@oticon.com>
When removing a peer from a CCC, it also needs to be removed from
the attribute `cfg`.
Not removing it would create a shortage of `cfg` that could
prevent new host to pair to the BLE device.
Signed-off-by: Olivier Martin <olivier.martin@proglove.de>
Accourding to Bluetooth specification the Service Changed
Characteristic shall not have its handle changed once it has been
bonded, so this moves the GATT service to be the very first service
registered that way it is guaranteed that it won't change even if
device is flashed with a different configuration which end up changing
the handles after it.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Some backends may actually contain the same key multiple times so the
code needs to check if there is already a ccc_cfg for an address before
attempting to use one that is unallocated.
Fixes#11409
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
If there are no CCC to be stored the value should be set to NULL so it
is properly cleared otherwise calling settings_str_from_bytes will leave
str uninitialized which may cause a crash when attempting to load the
value.
Fixes#11564
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
By default, CCC value is only stored to persistent memory during
BT disconnection. This commit adds an optional storing of CCC right
after it has been updated. This results in better robustness of
peripheral but increases system workqueue stack usage.
Signed-off-by: Filip Kubicz <filip.kubicz@nordicsemi.no>
Under GNU C, sizeof(void) = 1. This commit merely makes it explicit u8.
Pointer arithmetics over void types is:
* A GNU C extension
* Not supported by Clang
* Illegal across all ISO C standards
See also: https://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html
Signed-off-by: Mark Ruvald Pedersen <mped@oticon.com>
This allows to configure desired parameters for peripheral. When set
PPCP characteristic is also added to GAP service. If disabled it is
up to application to controll connection parameters and stack will
only enforce 5 seconds delay before update.
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
This fix ensures that the handle range used for next GATT discovery is
always inclusive. Previously, the discovery procedure could not be
started with equal value of start and end handle.
Signed-off-by: Kamil Piszczek <Kamil.Piszczek@nordicsemi.no>
This makes bt_gatt_discover perform discover all proceduce if no UUID
is given in the parameters.
Fixes#9713
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
None of the data for the CEP, CUD and CPF descriptors needs to be
modified by the stack at runtime. Make it possible to pass constant
data to the descriptor macros, and make sure the descriptor handlers
cast the data back to be a constant.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The return of memset is never checked. This patch explicitly ignore
the return to avoid MISRA-C violations.
The only directory excluded directory was ext/* since it contains
only imported code.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This changed added notification complete callback which
gives information if a given notification has been sent.
Signed-off-by: Kamil Gawor <Kamil.Gawor@nordicsemi.no>
This adds Central Address Resolution characteristic that is required
to check by peer if it's about to send directed advertisements where
initiator address is set to RPA.
Zephyr supports the Address Resolution, so the characteristic value
is hard-coded.
Please check Core 5.0 Vol 3 Part C 12.4 CENTRAL ADDRESS RESOLUTION
Related PTS test case: GAP/CONN/ACEP/BV-03-C
Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
This ensures the core services are always registered first and the
gatt_sc work is initialized.
Fixes#9785
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
If cfg_changed has not been set consider that the application don't
care and just skip it.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Make it possible to have multiple identity addresses as an LE
peripheral. For central role only the default identity is supported
for now. This also extends the flash storage in a backward compatible
way.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This makes GAP name writable if CONFIG_BT_DEVICE_NAME_STORAGE is > 0
which means the name can be persisted.
Fixes#8357
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This adds an Kconfig option to disable GATT Multiple Read support.
This GATT sub-procedure is optional and does not have to be supported.
Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
This fixes invalid assert condition.
As stated in Bluetooth Core v5.0 Vol 3 Part F
3.4.4.1 Read By Type Request &&
3.4.4.9 Read by Group Type Request
"The starting handle shall be less than or equal to the
ending handle."
3.4.3.1 Find Information Request &&
3.4.3.3 Find By Type Value Request
"Only attributes with attribute handles between and
including the Starting Handle parameter and the Ending
Handle parameter that match the requested attribute type
and the attribute value that have sufficient permissions
to allow reading will be returned."
Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>
Recent commits which made the choice of attribute to pass to
bt_gatt_notify() more flexible contained some unfortunate bugs in
handling the attributes and their values. In particular, both calls to
gatt_notify() would in certain circumstances pass the wrong handle
value. This should now be fixed.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Since BT_GATT_CHARACTERISTIC now expands to 2 attributes it may be
confusing to use bt_gatt_indicate as that expects the Value attribute to
be given which is no longer visible, so this enables the user to use
the Characteristic attribute in addition to its value.
Fixes#8231
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Since BT_GATT_CHARACTERISTIC now expands to 2 attributes it may be
confusing to use bt_gatt_notify as that expects the Value attribute to
be given which is no longer visible, so this enables the user to use
the Characteristic attribute in addition to its value.
Fixes#8231
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This ensures the every characteristic has a value attribute declared
with the same UUID since the old macro did not declare the value the
application would normally have to declare one itself using a different
UUID which is not allowed.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The 'valid' member of struct bt_gatt_ccc_cfg was redundant, since
setting 'peer' to BT_ADDR_LE_ANY does the same job. What's worse, the
handling of 'valid' was also buggy in that some places looking for
valid CCC structs only matched the address, meaning it might yield a
positive match for invalid entries.
Fix these issues by removing the 'valid' struct member, and solely
using the 'peer' member to identify valid entries. Also simplify the
code by acknowledging that no CCC entry is essentially the same as the
value '0' written to CCC.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
