首先获取MAC地址:(来自
developertips)
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
...
- (NSString *)getMacAddress
{
int mgmtInfoBase[6];
char *msgBuffer = NULL;
size_t length;
unsigned char macAddress[6];
struct if_msghdr *interfaceMsgStruct;
struct sockaddr_dl *socketStruct;
NSString *errorFlag = NULL;
mgmtInfoBase[0] = CTL_NET;
mgmtInfoBase[1] = AF_ROUTE;
mgmtInfoBase[2] = 0;
mgmtInfoBase[3] = AF_LINK;
mgmtInfoBase[4] = NET_RT_IFLIST;
if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0)
errorFlag = @"if_nametoindex failure";
else
{
if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)
errorFlag = @"sysctl mgmtInfoBase failure";
else
{
if ((msgBuffer = malloc(length)) == NULL)
errorFlag = @"buffer allocation failure";
else
{
if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
errorFlag = @"sysctl msgBuffer failure";
}
}
}
if (errorFlag != NULL)
{
NSLog(@"Error: %@", errorFlag);
return errorFlag;
}
interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
NSString *macAddressString = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
macAddress[0], macAddress[1], macAddress[2],
macAddress[3], macAddress[4], macAddress[5]];
NSLog(@"Mac Address: %@", macAddressString);
free(msgBuffer);
return macAddressString;
}
接下来使用rfc4122规范生成UUIDv1,如果规范太长无法阅读,您可以从其他语言移植代码,这里有一个我找到的: https://github.com/fredriklindberg/class.uuid.php/blob/master/class.uuid.php