使用以下方法並且適用於99.5%的情況,但在AppStore報告中他們無法獲取mac地址(我們使用標識符來驗證每個服務器調用)的用戶非常少。iPhone的情況下無法獲得MAC地址成功?
失敗的案例是基於iPhone 4S與IOS版本5.0.1。
嗨,
你知道這種情況下,(除了低內存),它會失敗?任何想法或討論將不勝感激。謝謝。
/* Original source code courtesy John from iOSDeveloperTips.com */
#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;
NSString *errorFlag = NULL;
size_t length;
// Setup the management Information Base (mib)
mgmtInfoBase[0] = CTL_NET; // Request network subsystem
mgmtInfoBase[1] = AF_ROUTE; // Routing table info
mgmtInfoBase[2] = 0;
mgmtInfoBase[3] = AF_LINK; // Request link layer information
mgmtInfoBase[4] = NET_RT_IFLIST; // Request all configured interfaces
// With all configured interfaces requested, get handle index
if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0)
errorFlag = @"if_nametoindex failure";
// Get the size of the data available (store in len)
else if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)
errorFlag = @"sysctl mgmtInfoBase failure";
// Alloc memory based on above call
else if ((msgBuffer = malloc(length)) == NULL)
errorFlag = @"buffer allocation failure";
// Get system information, store in buffer
else if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
{
free(msgBuffer);
errorFlag = @"sysctl msgBuffer failure";
}
else
{
// Map msgbuffer to interface message structure
struct if_msghdr *interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
// Map to link-level socket structure
struct sockaddr_dl *socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
// Copy link layer address data in socket structure to an array
unsigned char macAddress[6];
memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
// Read from char array into a string object, into traditional Mac address format
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);
// Release the buffer memory
free(msgBuffer);
return macAddressString;
}
// Error...
NSLog(@"Error: %@", errorFlag);
return errorFlag;
}
任何幫助,非常感謝。
在這個問題上的任何經驗? – jianhua
你能重新創建這個錯誤嗎?我只是在iPhone 4s 5.1.1上測試了你的代碼(我只需要交代),而且它的工作原理很簡單。我可以推薦我個人使用的方法,但它與您擁有的方法非常相似... –
en0只是wifi接口不是嗎? 如果該接口在設備上關閉,會發生什麼情況? – jaseelder