bluetooth: Find the device's Bluetooth address

Test: bluetooth_hidl_hal_test
Change-Id: I5353aaef3f8c5db75e424a8e1b242b08d5a96c6e
diff --git a/bluetooth/1.0/default/Android.bp b/bluetooth/1.0/default/Android.bp
index 4c7017c..32e5328 100644
--- a/bluetooth/1.0/default/Android.bp
+++ b/bluetooth/1.0/default/Android.bp
@@ -19,18 +19,34 @@
     srcs: [
         "async_fd_watcher.cc",
         "bluetooth_hci.cc",
+        "bluetooth_address.cc",
         "vendor_interface.cc",
     ],
     shared_libs: [
-        "liblog",
+        "android.hardware.bluetooth@1.0",
+        "libbase",
         "libcutils",
         "libhardware",
         "libhwbinder",
-        "libbase",
-        "libcutils",
-        "libutils",
         "libhidlbase",
         "libhidltransport",
-        "android.hardware.bluetooth@1.0",
+        "liblog",
+        "libutils",
+    ],
+}
+
+cc_test_host {
+    name: "bluetooth-vendor-interface-unit-tests",
+    srcs: [
+        "bluetooth_address.cc",
+        "test/bluetooth_address_test.cc",
+        "test/properties.cc",
+    ],
+    local_include_dirs: [
+        "test",
+    ],
+    shared_libs: [
+        "libbase",
+        "liblog",
     ],
 }
diff --git a/bluetooth/1.0/default/bluetooth_address.cc b/bluetooth/1.0/default/bluetooth_address.cc
new file mode 100644
index 0000000..b917de9
--- /dev/null
+++ b/bluetooth/1.0/default/bluetooth_address.cc
@@ -0,0 +1,93 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// 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 "bluetooth_address.h"
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+#include <fcntl.h>
+#include <utils/Log.h>
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+void BluetoothAddress::bytes_to_string(const uint8_t* addr, char* addr_str) {
+  sprintf(addr_str, "%02x:%02x:%02x:%02x:%02x:%02x", addr[0], addr[1], addr[2],
+          addr[3], addr[4], addr[5]);
+}
+
+bool BluetoothAddress::string_to_bytes(const char* addr_str, uint8_t* addr) {
+  if (addr_str == NULL) return false;
+  if (strnlen(addr_str, kStringLength) != kStringLength) return false;
+  unsigned char trailing_char = '\0';
+
+  return (sscanf(addr_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx%1c",
+                 &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5],
+                 &trailing_char) == kBytes);
+}
+
+bool BluetoothAddress::get_local_address(uint8_t* local_addr) {
+  char property[PROPERTY_VALUE_MAX] = {0};
+  bool valid_bda = false;
+
+  // Get local bdaddr storage path from a system property.
+  if (property_get(PROPERTY_BT_BDADDR_PATH, property, NULL)) {
+    int addr_fd;
+
+    ALOGD("%s: Trying %s", __func__, property);
+
+    addr_fd = open(property, O_RDONLY);
+    if (addr_fd != -1) {
+      int bytes_read = read(addr_fd, property, kStringLength);
+      CHECK(bytes_read == kStringLength);
+      close(addr_fd);
+
+      // Null terminate the string.
+      property[kStringLength] = '\0';
+
+      // If the address is not all zeros, then use it.
+      const uint8_t zero_bdaddr[kBytes] = {0, 0, 0, 0, 0, 0};
+      if ((string_to_bytes(property, local_addr)) &&
+          (memcmp(local_addr, zero_bdaddr, kBytes) != 0)) {
+        valid_bda = true;
+        ALOGD("%s: Got Factory BDA %s", __func__, property);
+      }
+    }
+  }
+
+  // No BDADDR found in the file. Look for BDA in a factory property.
+  if (!valid_bda && property_get(FACTORY_BDADDR_PROPERTY, property, NULL) &&
+      string_to_bytes(property, local_addr)) {
+    valid_bda = true;
+  }
+
+  // No factory BDADDR found. Look for a previously stored BDA.
+  if (!valid_bda && property_get(PERSIST_BDADDR_PROPERTY, property, NULL) &&
+      string_to_bytes(property, local_addr)) {
+    valid_bda = true;
+  }
+
+  return valid_bda;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
diff --git a/bluetooth/1.0/default/bluetooth_address.h b/bluetooth/1.0/default/bluetooth_address.h
new file mode 100644
index 0000000..94bf616
--- /dev/null
+++ b/bluetooth/1.0/default/bluetooth_address.h
@@ -0,0 +1,61 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// 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 <fcntl.h>
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+// The property key stores the storage location of Bluetooth Device Address
+static constexpr char PROPERTY_BT_BDADDR_PATH[] = "ro.bt.bdaddr_path";
+
+// Check for a legacy address stored as a property.
+static constexpr char PERSIST_BDADDR_PROPERTY[] =
+    "persist.service.bdroid.bdaddr";
+
+// If there is no valid bdaddr available from PROPERTY_BT_BDADDR_PATH and there
+// is no available persistent bdaddr available from PERSIST_BDADDR_PROPERTY,
+// use a factory set address.
+static constexpr char FACTORY_BDADDR_PROPERTY[] = "ro.boot.btmacaddr";
+
+// Encapsulate handling for Bluetooth Addresses:
+class BluetoothAddress {
+ public:
+  // Conversion constants
+  static constexpr size_t kStringLength = sizeof("XX:XX:XX:XX:XX:XX") - 1;
+  static constexpr size_t kBytes = (kStringLength + 1) / 3;
+
+  static void bytes_to_string(const uint8_t* addr, char* addr_str);
+
+  static bool string_to_bytes(const char* addr_str, uint8_t* addr);
+
+  static bool get_local_address(uint8_t* addr);
+};
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/1.0/default/test/bluetooth_address_test.cc b/bluetooth/1.0/default/test/bluetooth_address_test.cc
new file mode 100644
index 0000000..9f80ec2
--- /dev/null
+++ b/bluetooth/1.0/default/test/bluetooth_address_test.cc
@@ -0,0 +1,246 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// 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 <cutils/properties.h>
+#include <fcntl.h>
+#include <gtest/gtest.h>
+
+#include <string>
+#include <vector>
+using std::vector;
+
+#include "bluetooth_address.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+constexpr char kTestAddr1[BluetoothAddress::kStringLength + 1] =
+    "12:34:56:78:9a:bc";
+constexpr uint8_t kTestAddr1_bytes[BluetoothAddress::kBytes] = {
+    0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc};
+constexpr char kZeros[BluetoothAddress::kStringLength + 1] =
+    "00:00:00:00:00:00";
+constexpr uint8_t kZeros_bytes[BluetoothAddress::kBytes] = {0x00, 0x00, 0x00,
+                                                            0x00, 0x00, 0x00};
+constexpr char kTestAddrBad1[BluetoothAddress::kStringLength + 1] =
+    "bb:aa:dd:00:00:01";
+constexpr uint8_t kTestAddrBad1_bytes[BluetoothAddress::kBytes] = {
+    0xbb, 0xaa, 0xdd, 0x00, 0x00, 0x01};
+
+constexpr char kAddrPath[] = "/tmp/my_address_in_a_file.txt";
+
+class BluetoothAddressTest : public ::testing::Test {
+ public:
+  BluetoothAddressTest() {}
+  ~BluetoothAddressTest() {}
+
+  void FileWriteString(const char* path, const char* string);
+};
+
+void BluetoothAddressTest::FileWriteString(const char* path,
+                                           const char* string) {
+  int fd = open(path, O_CREAT | O_RDWR);
+  EXPECT_TRUE(fd > 0) << "err = " << strerror(errno);
+
+  size_t length = strlen(string);
+  size_t bytes_written = write(fd, string, length);
+
+  EXPECT_EQ(length, bytes_written) << strerror(errno);
+
+  close(fd);
+}
+
+TEST_F(BluetoothAddressTest, string_to_bytes) {
+  uint8_t addr[BluetoothAddress::kBytes];
+
+  // Malformed addresses
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("000000000000", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("00:00:00:00:0000", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("00:00:00:00:00:0", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("00:00:00:00:00:0;", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("aB:cD:eF:Gh:iJ:Kl", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("00:00:000:00:00:0;", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("12:34:56:78:90:12;", addr));
+  EXPECT_FALSE(BluetoothAddress::string_to_bytes("12:34:56:78:90:123", addr));
+
+  // Reasonable addresses
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes("00:00:00:00:00:00", addr));
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes("a5:a5:a5:a5:a5:a5", addr));
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes("5A:5A:5A:5A:5A:5A", addr));
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes("AA:BB:CC:DD:EE:FF", addr));
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes("aa:bb:cc:dd:ee:ff", addr));
+
+  // Compare the output to known bytes
+  uint8_t addrA[BluetoothAddress::kBytes];
+  uint8_t addrB[BluetoothAddress::kBytes];
+
+  // kTestAddr1
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes(kTestAddr1, addrA));
+  EXPECT_TRUE(memcmp(addrA, kTestAddr1_bytes, BluetoothAddress::kBytes) == 0);
+
+  // kZeros
+  EXPECT_TRUE(BluetoothAddress::string_to_bytes(kZeros, addrB));
+  EXPECT_TRUE(memcmp(addrB, kZeros_bytes, BluetoothAddress::kBytes) == 0);
+
+  // kTestAddr1 != kZeros
+  EXPECT_FALSE(memcmp(addrA, addrB, BluetoothAddress::kBytes) == 0);
+}
+
+TEST_F(BluetoothAddressTest, bytes_to_string) {
+  char addrA[BluetoothAddress::kStringLength + 1] = "";
+  char addrB[BluetoothAddress::kStringLength + 1] = "";
+
+  // kTestAddr1
+  BluetoothAddress::bytes_to_string(kTestAddr1_bytes, addrA);
+  EXPECT_TRUE(memcmp(addrA, kTestAddr1, BluetoothAddress::kStringLength) == 0);
+
+  // kZeros
+  BluetoothAddress::bytes_to_string(kZeros_bytes, addrB);
+  EXPECT_TRUE(memcmp(addrB, kZeros, BluetoothAddress::kStringLength) == 0);
+
+  // kTestAddr1 != kZeros
+  EXPECT_FALSE(memcmp(addrA, addrB, BluetoothAddress::kStringLength) == 0);
+}
+
+TEST_F(BluetoothAddressTest, property_set) {
+  // Set the properties to empty strings.
+  property_set(PERSIST_BDADDR_PROPERTY, "");
+  property_set(PROPERTY_BT_BDADDR_PATH, "");
+  property_set(FACTORY_BDADDR_PROPERTY, "");
+
+  // Get returns 0.
+  char prop[PROP_VALUE_MAX] = "";
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) == 0);
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) == 0);
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) == 0);
+
+  // Set the properties to known strings.
+  property_set(PERSIST_BDADDR_PROPERTY, "1");
+  property_set(PROPERTY_BT_BDADDR_PATH, "22");
+  property_set(FACTORY_BDADDR_PROPERTY, "333");
+
+  // Get returns the correct length.
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) == 1);
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) == 2);
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) == 3);
+
+  // Set the properties to empty strings again.
+  property_set(PERSIST_BDADDR_PROPERTY, "");
+  property_set(PROPERTY_BT_BDADDR_PATH, "");
+  property_set(FACTORY_BDADDR_PROPERTY, "");
+
+  // Get returns 0.
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) == 0);
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) == 0);
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) == 0);
+}
+
+TEST_F(BluetoothAddressTest, property_get) {
+  // Set the properties to known strings.
+  property_set(PERSIST_BDADDR_PROPERTY, PERSIST_BDADDR_PROPERTY);
+  property_set(PROPERTY_BT_BDADDR_PATH, PROPERTY_BT_BDADDR_PATH);
+  property_set(FACTORY_BDADDR_PROPERTY, FACTORY_BDADDR_PROPERTY);
+
+  // Get returns the same strings.
+  char prop[PROP_VALUE_MAX] = "";
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(PERSIST_BDADDR_PROPERTY, prop) == 0);
+
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(PROPERTY_BT_BDADDR_PATH, prop) == 0);
+
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(FACTORY_BDADDR_PROPERTY, prop) == 0);
+
+  // Set a property to a different known string.
+  char prop2[PROP_VALUE_MAX] = "Erased";
+  property_set(PERSIST_BDADDR_PROPERTY, prop2);
+
+  // Get returns the correct strings.
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(PROPERTY_BT_BDADDR_PATH, prop) == 0);
+
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(FACTORY_BDADDR_PROPERTY, prop) == 0);
+
+  // Set another property to prop2.
+  property_set(PROPERTY_BT_BDADDR_PATH, prop2);
+
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(FACTORY_BDADDR_PROPERTY, prop) == 0);
+
+  // Set the third property to prop2.
+  property_set(FACTORY_BDADDR_PROPERTY, prop2);
+
+  EXPECT_TRUE(property_get(PERSIST_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+
+  EXPECT_TRUE(property_get(PROPERTY_BT_BDADDR_PATH, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+
+  EXPECT_TRUE(property_get(FACTORY_BDADDR_PROPERTY, prop, NULL) > 0);
+  EXPECT_TRUE(strcmp(prop2, prop) == 0);
+}
+
+TEST_F(BluetoothAddressTest, get_local_address) {
+  EXPECT_TRUE(property_set(PERSIST_BDADDR_PROPERTY, "") == 0);
+  EXPECT_TRUE(property_set(FACTORY_BDADDR_PROPERTY, "") == 0);
+  uint8_t address[BluetoothAddress::kBytes];
+
+  // File contains a non-zero Address.
+  FileWriteString(kAddrPath, kTestAddr1);
+  EXPECT_TRUE(property_set(PROPERTY_BT_BDADDR_PATH, kAddrPath) == 0);
+  EXPECT_TRUE(BluetoothAddress::get_local_address(address));
+  EXPECT_TRUE(memcmp(address, kTestAddr1_bytes, BluetoothAddress::kBytes) == 0);
+
+  // File contains a zero address.
+  FileWriteString(kAddrPath, kZeros);
+  EXPECT_TRUE(property_set(PROPERTY_BT_BDADDR_PATH, kAddrPath) == 0);
+  EXPECT_FALSE(BluetoothAddress::get_local_address(address));
+
+  // Factory property contains an address.
+  EXPECT_TRUE(property_set(PERSIST_BDADDR_PROPERTY, kTestAddrBad1) == 0);
+  EXPECT_TRUE(property_set(FACTORY_BDADDR_PROPERTY, kTestAddr1) == 0);
+  EXPECT_TRUE(BluetoothAddress::get_local_address(address));
+  EXPECT_TRUE(memcmp(address, kTestAddr1_bytes, BluetoothAddress::kBytes) == 0);
+
+  // Persistent property contains an address.
+  memcpy(address, kTestAddrBad1_bytes, BluetoothAddress::kBytes);
+  EXPECT_TRUE(property_set(PERSIST_BDADDR_PROPERTY, kTestAddr1) == 0);
+  EXPECT_TRUE(property_set(FACTORY_BDADDR_PROPERTY, "") == 0);
+  EXPECT_TRUE(property_set(PROPERTY_BT_BDADDR_PATH, "") == 0);
+  EXPECT_TRUE(BluetoothAddress::get_local_address(address));
+  EXPECT_TRUE(memcmp(address, kTestAddr1_bytes, BluetoothAddress::kBytes) == 0);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
diff --git a/bluetooth/1.0/default/test/properties.cc b/bluetooth/1.0/default/test/properties.cc
new file mode 100644
index 0000000..ad5c194
--- /dev/null
+++ b/bluetooth/1.0/default/test/properties.cc
@@ -0,0 +1,79 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// 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.
+//
+
+#define LOG_TAG "properties"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <cutils/properties.h>
+#include <utils/Log.h>
+
+static const int MAX_PROPERTIES = 5;
+
+struct property {
+  char key[PROP_KEY_MAX + 2];
+  char value[PROP_VALUE_MAX + 2];
+};
+
+int num_properties = 0;
+struct property properties[MAX_PROPERTIES];
+
+// Find the correct entry.
+static int property_find(const char *key) {
+  for (int i = 0; i < num_properties; i++) {
+    if (strncmp(properties[i].key, key, PROP_KEY_MAX) == 0) {
+      return i;
+    }
+  }
+  return MAX_PROPERTIES;
+}
+
+int property_set(const char *key, const char *value) {
+  if (strnlen(value, PROP_VALUE_MAX) > PROP_VALUE_MAX) return -1;
+
+  // Check to see if the property exists.
+  int prop_index = property_find(key);
+
+  if (prop_index == MAX_PROPERTIES) {
+    if (num_properties >= MAX_PROPERTIES) return -1;
+    prop_index = num_properties;
+    num_properties += 1;
+  }
+
+  // This is test code.  Be nice and don't push the boundary cases!
+  strncpy(properties[prop_index].key, key, PROP_KEY_MAX + 1);
+  strncpy(properties[prop_index].value, value, PROP_VALUE_MAX + 1);
+  return 0;
+}
+
+int property_get(const char *key, char *value, const char *default_value) {
+  // This doesn't mock the behavior of default value
+  if (default_value != NULL) ALOGE("%s: default_value is ignored!", __func__);
+
+  // Check to see if the property exists.
+  int prop_index = property_find(key);
+
+  if (prop_index == MAX_PROPERTIES) return 0;
+
+  int len = strlen(properties[prop_index].value);
+  memcpy(value, properties[prop_index].value, len);
+  value[len] = '\0';
+  return len;
+}
diff --git a/bluetooth/1.0/default/test/sys/system_properties.h b/bluetooth/1.0/default/test/sys/system_properties.h
new file mode 100644
index 0000000..b477a6b
--- /dev/null
+++ b/bluetooth/1.0/default/test/sys/system_properties.h
@@ -0,0 +1,20 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// 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.
+//
+
+// Mock sys/system_properties.h for testing
+
+#define PROP_VALUE_MAX 50
+#define PROP_KEY_MAX 50
diff --git a/bluetooth/1.0/default/vendor_interface.cc b/bluetooth/1.0/default/vendor_interface.cc
index 7efd5bd..905e1a6 100644
--- a/bluetooth/1.0/default/vendor_interface.cc
+++ b/bluetooth/1.0/default/vendor_interface.cc
@@ -18,9 +18,13 @@
 
 #define LOG_TAG "android.hardware.bluetooth@1.0-impl"
 #include <android-base/logging.h>
+#include <cutils/properties.h>
 #include <utils/Log.h>
 
 #include <dlfcn.h>
+#include <fcntl.h>
+
+#include "bluetooth_address.h"
 
 static const char* VENDOR_LIBRARY_NAME = "libbt-vendor.so";
 static const char* VENDOR_LIBRARY_SYMBOL_NAME =
@@ -59,7 +63,7 @@
   packet->len = data.size();
   packet->layer_specific = 0;
   packet->event = event;
-  // TODO(eisenbach): Avoid copy here; if BT_HDR->data can be enusred to
+  // TODO(eisenbach): Avoid copy here; if BT_HDR->data can be ensured to
   // be the only way the data is accessed, a pointer could be passed here...
   memcpy(packet->data, data.data(), data.size());
   return packet;
@@ -143,9 +147,6 @@
 VendorInterface* VendorInterface::get() { return g_vendor_interface; }
 
 bool VendorInterface::Open(PacketReadCallback packet_read_cb) {
-  // TODO(eisenbach): P0 - get local BD address somehow
-  uint8_t local_bda[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
-
   firmware_configured_ = false;
   packet_read_cb_ = packet_read_cb;
 
@@ -166,6 +167,10 @@
     return false;
   }
 
+  // Get the local BD address
+
+  uint8_t local_bda[BluetoothAddress::kBytes];
+  CHECK(BluetoothAddress::get_local_address(local_bda));
   int status = lib_interface_->init(&lib_callbacks, (unsigned char*)local_bda);
   if (status) {
     ALOGE("%s unable to initialize vendor library: %d", __func__, status);
diff --git a/bluetooth/1.0/default/vendor_interface.h b/bluetooth/1.0/default/vendor_interface.h
index 133c51b..73ff2eb 100644
--- a/bluetooth/1.0/default/vendor_interface.h
+++ b/bluetooth/1.0/default/vendor_interface.h
@@ -29,7 +29,8 @@
 namespace implementation {
 
 using ::android::hardware::hidl_vec;
-using PacketReadCallback = std::function<void(HciPacketType, const hidl_vec<uint8_t>&)>;
+using PacketReadCallback =
+    std::function<void(HciPacketType, const hidl_vec<uint8_t> &)>;
 
 class VendorInterface {
  public: