Import of the watch repository from Pebble

src/libbtutil/include/btutil/bt_device.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <bluetooth/bluetooth_types.h>
+
+#include <stdbool.h>
+
+//! Creates a BTDevice given its address.
+//! @param address The address to use
+//! @param is_random Specify true if the address is a random address, or false
+//! if it is the real BD_ADDR of the device.
+//! @return The created BTDevice
+BTDevice bt_device_init_with_address(BTDeviceAddress address, bool is_random);
+
+//! Gets the address of the device.
+//! @param device The device for which to get the address.
+//! @return The address of the device.
+BTDeviceAddress bt_device_get_address(BTDevice device);
+
+//! Compares two Bluetooth device addresses.
+//! @return true if the addresses are equal, false if they are not or if one
+//! or both addresses were NULL.
+bool bt_device_address_equal(const BTDeviceAddress *addr1,
+                             const BTDeviceAddress *addr2);
+
+//! Compares the address with an all-zero (invalid) address.
+//! @return true if the address is NULL or all-zeroes.
+bool bt_device_address_is_invalid(const BTDeviceAddress *addr);
+
+//! Compares two BTDeviceInternal structs.
+//! @return true if the devices refer to the same device, false if they refer
+//! to different devices or if one or both devices were NULL.
+bool bt_device_internal_equal(const BTDeviceInternal *device1_int,
+                              const BTDeviceInternal *device2_int);
+
+//! Compares two Bluetooth devices.
+//! @return true if the devices refer to the same device, false if they refer
+//! to different devices or if one or both devices were NULL.
+bool bt_device_equal(const BTDevice *device1, const BTDevice *device2);
+
+//! Tests whether the device is a valid device.
+//! This function is meant to be used together with APIs that return a BTDevice,
+//! for example ble_service_get_device().
+//! @return true if the device appears to be invalid, false if it does not.
+bool bt_device_is_invalid(const BTDevice *device);

src/libbtutil/include/btutil/bt_uuid.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <util/uuid.h>
+
+#include <stdint.h>
+
+//! Expands a 16-bit UUID to its 128-bit equivalent, using the Bluetooth base
+//! UUID (0000xxxx-0000-1000-8000-00805F9B34FB).
+//! @param uuid16 The 16-bit value from which to derive the 128-bit UUID.
+//! @return Uuid structure containing the final UUID.
+Uuid bt_uuid_expand_16bit(uint16_t uuid16);
+
+//! Expands a 32-bit UUID to its 128-bit equivalent, using the Bluetooth base
+//! UUID (xxxxxxxx-0000-1000-8000-00805F9B34FB).
+//! @param uuid32 The 32-bit value from which to derive the 128-bit UUID.
+//! @return Uuid structure containing the final UUID.
+Uuid bt_uuid_expand_32bit(uint32_t uuid32);

src/libbtutil/include/btutil/sm_util.h

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdbool.h>
+
+typedef struct SMPairingInfo SMPairingInfo;
+typedef struct SM128BitKey SM128BitKey;
+
+bool sm_is_pairing_info_equal_identity(const SMPairingInfo *a, const SMPairingInfo *b);
+
+bool sm_is_pairing_info_empty(const SMPairingInfo *p);
+
+bool sm_is_pairing_info_irk_not_used(const SM128BitKey *irk_key);