setbtmac: get the bdaddr from the radio instead of cheating

Cheating worked unless you were on the Gingerbread bootloader, as the serialno was not set to the bdaddr but some other weird string. This is pretty much the same method that brcm_patchram_plus uses, without all of the fancy structs and enums... and error checking, but it's hard to do that without having the code for this stuff, and probably not really necessary anyway. :D Also clean up setwifimac
dazjo · Sep 28, 2013 · 1a23e55 · 1a23e55
1 parent 2bfe1dd
commit 1a23e55
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Showing 4 changed files with 41 additions and 37 deletions.
diff --git a/setbtmac/Android.mk b/setbtmac/Android.mk
@@ -12,16 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
+$(shell mkdir -p $(OUT)/obj/SHARED_LIBRARIES/libnv_intermediates/)
+$(shell touch $(OUT)/obj/SHARED_LIBRARIES/libnv_intermediates/export_includes)
+$(shell mkdir -p $(OUT)/obj/SHARED_LIBRARIES/liboncrpc_intermediates/)
+$(shell touch $(OUT)/obj/SHARED_LIBRARIES/liboncrpc_intermediates/export_includes)
+
 LOCAL_MODULE_TAGS := optional
 
 LOCAL_SRC_FILES := setbtmac.c
 
 LOCAL_PRELINK_MODULE := true
-LOCAL_SHARED_LIBRARIES := libcutils
+LOCAL_SHARED_LIBRARIES := libcutils libnv liboncrpc
 LOCAL_MODULE := setbtmac
 
 include $(BUILD_EXECUTABLE)
diff --git a/setbtmac/setbtmac.c b/setbtmac/setbtmac.c
@@ -20,43 +20,50 @@
 #include <cutils/properties.h>
 #include <sys/stat.h>
 
-static const char PROP_SERIALNO[] = "ro.serialno";
+#define NV_READ_F 0
+#define NV_BD_ADDR_I 0x1BF
+
+/* In libnv.so */
+extern void nv_cmd_remote(int func, int item, void *result);
+
+/* In liboncrpc.so */
+extern void oncrpc_init();
+extern void oncrpc_deinit();
+extern void oncrpc_task_start();
+extern void oncrpc_task_stop();
+
 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. */
+	int mac_bits[2] = { 0, };
 
-	property_get(PROP_SERIALNO, serialno, NULL);
+	/* Set Bluetooth MAC address by loading it from the radio. */
+	oncrpc_init();
+	oncrpc_task_start();
+	nv_cmd_remote(NV_READ_F, NV_BD_ADDR_I, &mac_bits);
+	oncrpc_task_stop();
+	oncrpc_deinit();
 
-	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);
+	sprintf(bdaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
+		(mac_bits[1]&0xFF00) >> 8, mac_bits[1]&0xFF, (mac_bits[0]&0xFF000000) >> 24,
+		(mac_bits[0]&0xFF0000) >> 16, (mac_bits[0]&0xFF00) >> 8, mac_bits[0]&0xFF);
 	printf("%s\n", bdaddr);
 
-	file = open(FILE_BDADDR, O_WRONLY|O_CREAT|O_TRUNC, 00600|00060|00006);
+	file = open(FILE_BDADDR, O_WRONLY|O_CREAT|O_TRUNC, 00666);
+
 	if (file < 0)
-	{
 		ALOGE("Can't open %s\n", FILE_BDADDR);
-	}
+
 	write(file, bdaddr, strlen(bdaddr));
 	close(file);
-	chmod(FILE_BDADDR, 00600|00060|00006);
+	chmod(FILE_BDADDR, 00666);
 
 	property_set(PROP_BDADDR, FILE_BDADDR);
+
+	return 0;
 }
diff --git a/setwifimac/Android.mk b/setwifimac/Android.mk
@@ -1,4 +1,4 @@
-# Copyright (C) 2012 The CyanogenMod project
+# 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.
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 

diff --git a/setwifimac/setwifimac.c b/setwifimac/setwifimac.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 The CyanogenMod Project
+ * 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.
@@ -21,19 +21,11 @@
 /* In libhwrpc.so */
 extern void huawei_oem_rapi_streaming_function(int n, int p1, int p2, int p3, int *v1, int *v2, char *v3);
 
-static const char DRIVER_PROP_MAC_PARAM[] = "wlan.module.mac_param";
-
-void SetMAC(void);
+static const char PROP_MAC_PARAM[] = "wlan.module.mac_param";
 
 int main()
 {
-	SetMAC();
-	return 0;
-}
-
-void SetMAC(void)
-{
-	char wlan_mac_arg[PROPERTY_VALUE_MAX] = "mac_param=00:90:4c:ce:43:30";
+	char wlan_mac_arg[PROPERTY_VALUE_MAX];
 	char mac_bits[8];
 	int y = 0;
 
@@ -47,5 +39,7 @@ void SetMAC(void)
 		mac_bits[2], mac_bits[1], mac_bits[0]);
 	printf("%s\n", wlan_mac_arg);
 
-	property_set(DRIVER_PROP_MAC_PARAM, wlan_mac_arg);
+	property_set(PROP_MAC_PARAM, wlan_mac_arg);
+
+	return 0;
 }