android_device_allwinner-full/tulip-common/0002-support-setmacaddr-by-lcm.patch

From 6552e769a6f23b867e828ce875932cba5fb66fa6 Mon Sep 17 00:00:00 2001
From: ldj <ludajunjunjun@126.com>
Date: Wed, 2 Dec 2015 14:35:30 +0800
Subject: [PATCH 2/2] support setmacaddr by lcm

---
 setmacaddr/Android.mk   |  13 +++++
 setmacaddr/setmacaddr.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++
 tulip-common.mk         |   6 +-
 3 files changed, 166 insertions(+), 1 deletion(-)
 create mode 100755 setmacaddr/Android.mk
 create mode 100755 setmacaddr/setmacaddr.c

diff --git a/setmacaddr/Android.mk b/setmacaddr/Android.mk
new file mode 100755
index 0000000..0d05569
--- /dev/null
+++ b/setmacaddr/Android.mk
@@ -0,0 +1,13 @@
+LOCAL_PATH:= $(call my-dir)
+# RTK mac
+include $(CLEAR_VARS)
+LOCAL_PRELINK_MODULE    := false
+LOCAL_SHARED_LIBRARIES  := libcutils
+LOCAL_LDLIBS        += -Idl
+
+LOCAL_SRC_FILES     := setmacaddr.c
+
+LOCAL_MODULE := setmacaddr
+
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)
diff --git a/setmacaddr/setmacaddr.c b/setmacaddr/setmacaddr.c
new file mode 100755
index 0000000..142ca5a
--- /dev/null
+++ b/setmacaddr/setmacaddr.c
@@ -0,0 +1,148 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <fcntl.h>
+
+#define LOG_TAG "setmacaddr"
+#include <utils/Log.h>
+
+#include <cutils/properties.h>
+
+#define PROPERTY_BT_BDADDR_PATH "ro.bt.bdaddr_path"
+
+#define MAC_PATH "/data/wifimac.txt"
+#define BTA_PATH "/data/btaddr.txt"
+#define STATIC_MAC_PATH "/mnt/private/ULI/factory/mac.txt"
+#define STATIC_BTA_PATH "/mnt/private/ULI/factory/btaddr.txt"
+
+#define MAC_LEN 20
+
+static int gen_randseed()
+{
+	int fd;
+	int rc;
+	unsigned int randseed;
+	size_t len;
+	struct timeval tval;
+
+	len =  sizeof(randseed);
+	fd = open("/dev/urandom", O_RDONLY);
+	if (fd < 0)
+	{
+		ALOGD("%s: Open /dev/urandom fail\n", __FUNCTION__);
+		return -1;
+	}
+	rc = read(fd, &randseed, len);
+	close(fd);
+	if(rc <0)
+	{
+		if (gettimeofday(&tval, (struct timezone *)0) > 0)
+			randseed = (unsigned int) tval.tv_usec;
+		else
+			randseed = (unsigned int) time(NULL);
+
+		ALOGD("open /dev/urandom fail, using system time for randseed\n");
+	}
+	return randseed;
+}
+
+/*
+ * Get a Randon MAC addr, save to macaddr
+ *
+ */
+static int get_randon_mac(char *macaddr)
+{
+	int randseed;
+	int randvar1,randvar2;
+
+	randseed = gen_randseed();
+	if(randseed == -1)
+		return -1;
+	srand((unsigned int)randseed);
+
+	randvar1 = rand();
+	randvar2 = rand();
+	ALOGD("%s:  randvar1 =0x%x, randvar2=0x%x",__FUNCTION__, randvar1,randvar2);
+
+	//sprintf(macaddr, "00:e0:4c:%02x:%02x:%02x",
+	//changed by tingle for 6 bytes random
+	//Byte1,bit0,bit1 can't be 1.
+	sprintf(macaddr, "%02x:%02x:%02x:%02x:%02x:%02x", \
+			(unsigned char)((randvar2)&0xFC), \
+			(unsigned char)((randvar2>>8)&0xFF), \
+			(unsigned char)((randvar2>>16)&0xFF), \
+			(unsigned char)((randvar1)&0xFF), \
+			(unsigned char)((randvar1>>8)&0xFF), \
+			(unsigned char)((randvar1>>16)&0xFF));
+
+    ALOGD("generate a new MAC address: %s", macaddr);
+
+    return 0;
+}
+
+/*
+ * Generate randon MAC addr, save in file, backup in bakfile
+ * if bakfile exist, use it
+ * if bakfile not exist, generate a new randon addr
+ */
+static void generate_mac(char* file, char* bakfile)
+{
+    char macaddr[MAC_LEN];
+	char cmd[128];
+
+	ALOGD("%s: file= %s bakfile= %s",__FUNCTION__, file, bakfile);
+
+    if (access(file, F_OK) == 0 && access(bakfile, F_OK) == 0) {
+        ALOGD("both file and bakfile exist, it is ok.");
+        return;
+    } else if (access(bakfile, F_OK) == 0) {
+        ALOGD("only bakfile exist, copy to file.");
+        sprintf(cmd, "cp %s %s && chmod 644 %s", bakfile, file, file);
+        ALOGD("cmd=%s", cmd);
+        system(cmd);
+        return;
+    } else if (access(file, F_OK) == 0) {
+        ALOGD("only file exist, copy to bakfile.");
+        sprintf(cmd, "cp %s %s && chmod 644 %s", file, bakfile, bakfile);
+        ALOGD("cmd=%s", cmd);
+        system(cmd);
+        return;
+    }
+
+    //or, should generate a new mac addr
+    if(get_randon_mac(macaddr) != 0) {
+        ALOGD("Generate a randon mac addr failed!!!");
+        return;
+    }
+    //save mac addr to file
+    sprintf(cmd, "echo %s > %s && chmod 644 %s", macaddr, file, file);
+    ALOGD("cmd=%s", cmd);
+    system(cmd);
+    //backup to bakfile
+    sprintf(cmd, "cp %s %s && chmod 644 %s", file, bakfile, bakfile);
+    ALOGD("cmd=%s", cmd);
+    system(cmd);
+}
+
+int main(int argc, char ** argv)
+{
+    char val[256];
+    char cmd[128];
+
+    if (access(STATIC_BTA_PATH, F_OK) != 0 && access(STATIC_MAC_PATH, F_OK) != 0) {
+        sprintf(cmd, "mkdir -p /mnt/private/ULI/factory");
+        ALOGD("cmd=%s", cmd);
+        system(cmd);
+    }
+
+
+    if(property_get(PROPERTY_BT_BDADDR_PATH, val, NULL)) {
+	    generate_mac(val, STATIC_BTA_PATH);
+    } else {
+	    generate_mac(BTA_PATH, STATIC_BTA_PATH);
+    }
+
+	generate_mac(MAC_PATH, STATIC_MAC_PATH);
+
+	return 0;
+}
diff --git a/tulip-common.mk b/tulip-common.mk
index 748f204..cdf3a3b 100755
--- a/tulip-common.mk
+++ b/tulip-common.mk
@@ -11,7 +11,11 @@ PRODUCT_PACKAGES += \
     camera.tulip
 
 PRODUCT_PACKAGES += \
-    libion
+    libion \
+    setmacaddr
+# add for bluetooth addr
+PRODUCT_PROPERTY_OVERRIDES += \
+       ro.bt.bdaddr_path=/data/btaddr.txt        
 
 # audio
 PRODUCT_PACKAGES += \
-- 
1.9.1