Introduce setbtmac

dazjo · Jan 26, 2013 · bb15783 · bb15783
1 parent 9fc42cb
commit bb15783
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diff --git a/setbtmac/Android.mk b/setbtmac/Android.mk
@@ -0,0 +1,27 @@
+# Copyright (C) 2013 The CyanogenMod 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.
+
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := setbtmac.c
+
+LOCAL_PRELINK_MODULE := true
+LOCAL_SHARED_LIBRARIES := libcutils
+LOCAL_MODULE := setbtmac
+
+include $(BUILD_EXECUTABLE)
diff --git a/setbtmac/setbtmac.c b/setbtmac/setbtmac.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod 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 <fcntl.h>
+#include <string.h>
+#include <cutils/log.h>
+#include <cutils/properties.h>
+
+static const char PROP_SERIALNO[] = "ro.serialno";
+static const char PROP_BDADDR[] = "ro.bt.bdaddr_path";
+static const char FILE_BDADDR[] = "/data/misc/bluetooth/.bdaddr";
+
+void SetMAC(void);
+
+int main()
+{
+	SetMAC();
+	return 0;
+}
+
+void SetMAC(void)
+{
+	char serialno[PROPERTY_VALUE_MAX];
+	char bdaddr[PROPERTY_VALUE_MAX];
+	int file;
+
+	/* The Bluetooth MAC address is the same as the device's serialno.
+	   Use this as the Bluetooth stack introduced in 4.2 cannot get our
+	   MAC address due to Huawei weirdness. */
+
+	property_get(PROP_SERIALNO, serialno, NULL);
+
+	sprintf(bdaddr, "%2.2s:%2.2s:%2.2s:%2.2s:%2.2s:%2.2s",
+		serialno, serialno+2, serialno+4,
+		serialno+6, serialno+8, serialno+10);
+	printf("%s\n", bdaddr);
+
+	file = open(FILE_BDADDR, O_WRONLY|O_CREAT|O_TRUNC, 00600|00060|00006);
+	if (file < 0)
+	{
+		ALOGE("Can't open %s\n", FILE_BDADDR);
+	}
+	write(file, bdaddr, strlen(bdaddr));
+	close(file);
+
+	property_set(PROP_BDADDR, FILE_BDADDR);
+}