Question

是否可以使用Swift获取MAC地址？

MAC地址是Wi-Fi或机场的主要地址。

我正在尝试制作OS X应用程序。

Answer 1

Apple的https://developer.apple.com/library/mac/samplecode/GetPrimaryMACAddress/Introduction/Intro.html示例代码可以检索以太网MAC地址被翻译成斯威夫特。我只保留了最重要的评论，更多解释可以在原始代码中找到。

// Returns an iterator containing the primary (built-in) Ethernet interface. The caller is responsible for
// releasing the iterator after the caller is done with it.
func FindEthernetInterfaces() -> io_iterator_t? {

    let matchingDictUM = IOServiceMatching("IOEthernetInterface");
    // Note that another option here would be:
    // matchingDict = IOBSDMatching("en0");
    // but en0: isn't necessarily the primary interface, especially on systems with multiple Ethernet ports.

    if matchingDictUM == nil {
        return nil
    }
    let matchingDict = matchingDictUM.takeUnretainedValue() as NSMutableDictionary
    matchingDict["IOPropertyMatch"] = [ "IOPrimaryInterface" : true]

    var matchingServices : io_iterator_t = 0
    if IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &matchingServices) != KERN_SUCCESS {
        return nil
    }

    return matchingServices
}

// Given an iterator across a set of Ethernet interfaces, return the MAC address of the last one.
// If no interfaces are found the MAC address is set to an empty string.
// In this sample the iterator should contain just the primary interface.
func GetMACAddress(intfIterator : io_iterator_t) -> [UInt8]? {

    var macAddress : [UInt8]?

    var intfService = IOIteratorNext(intfIterator)
    while intfService != 0 {

        var controllerService : io_object_t = 0
        if IORegistryEntryGetParentEntry(intfService, "IOService", &controllerService) == KERN_SUCCESS {

            let dataUM = IORegistryEntryCreateCFProperty(controllerService, "IOMACAddress", kCFAllocatorDefault, 0)
            if dataUM != nil {
                let data = dataUM.takeRetainedValue() as! NSData
                macAddress = [0, 0, 0, 0, 0, 0]
                data.getBytes(&macAddress!, length: macAddress!.count)
            }
            IOObjectRelease(controllerService)
        }

        IOObjectRelease(intfService)
        intfService = IOIteratorNext(intfIterator)
    }

    return macAddress
}


if let intfIterator = FindEthernetInterfaces() {
    if let macAddress = GetMACAddress(intfIterator) {
        let macAddressAsString = ":".join(macAddress.map( { String(format:"%02x", $0) } ))
        println(macAddressAsString)
    }

    IOObjectRelease(intfIterator)
}

唯一“棘手”的部分是如何使用Unmanaged个对象我的代码中有后缀UM。

函数返回一个可选项，而不是返回错误代码如果函数失败，则为nil。

Swift 3的更新：

func FindEthernetInterfaces() -> io_iterator_t? {

    let matchingDict = IOServiceMatching("IOEthernetInterface") as NSMutableDictionary
    matchingDict["IOPropertyMatch"] = [ "IOPrimaryInterface" : true]

    var matchingServices : io_iterator_t = 0
    if IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &matchingServices) != KERN_SUCCESS {
        return nil
    }

    return matchingServices
}

func GetMACAddress(_ intfIterator : io_iterator_t) -> [UInt8]? {

    var macAddress : [UInt8]?

    var intfService = IOIteratorNext(intfIterator)
    while intfService != 0 {

        var controllerService : io_object_t = 0
        if IORegistryEntryGetParentEntry(intfService, "IOService", &controllerService) == KERN_SUCCESS {

            let dataUM = IORegistryEntryCreateCFProperty(controllerService, "IOMACAddress" as CFString, kCFAllocatorDefault, 0)
            if let data = dataUM?.takeRetainedValue() as? NSData {
                macAddress = [0, 0, 0, 0, 0, 0]
                data.getBytes(&macAddress!, length: macAddress!.count)
            }
            IOObjectRelease(controllerService)
        }

        IOObjectRelease(intfService)
        intfService = IOIteratorNext(intfIterator)
    }

    return macAddress
}

if let intfIterator = FindEthernetInterfaces() {
    if let macAddress = GetMACAddress(intfIterator) {
        let macAddressAsString = macAddress.map( { String(format:"%02x", $0) } )
            .joined(separator: ":")
        print(macAddressAsString)
    }

    IOObjectRelease(intfIterator)
}

Answer 2

通过if_msghdr

的不同方法

func MACAddressForBSD(bsd : String) -> String?
{
  let MAC_ADDRESS_LENGTH = 6
  let separator = ":"

  var length : size_t = 0
  var buffer : [CChar]

  let BSDIndex = Int32(if_nametoindex(bsd))
  if BSDIndex == 0 {
    println("Error: could not find index for bsd name \(bsd)")
    return nil
  }
  let bsdData = bsd.dataUsingEncoding(NSUTF8StringEncoding)!

  var managementInfoBase = [CTL_NET, AF_ROUTE, 0, AF_LINK, NET_RT_IFLIST, BSDIndex]

  if sysctl(&managementInfoBase, 6, nil, &length, nil, 0) < 0 {
    println("Error: could not determine length of info data structure");
    return nil;
  }

  buffer = [CChar](count: length, repeatedValue: 0)

  if sysctl(&managementInfoBase, 6, &buffer, &length, nil, 0) < 0 {
    println("Error: could not read info data structure");
    return nil;
  }

  let infoData = NSData(bytes: buffer, length: length)
  var interfaceMsgStruct = if_msghdr()
  infoData.getBytes(&interfaceMsgStruct, length: sizeof(if_msghdr))
  let socketStructStart = sizeof(if_msghdr) + 1
  let socketStructData = infoData.subdataWithRange(NSMakeRange(socketStructStart, length - socketStructStart))
  let rangeOfToken = socketStructData.rangeOfData(bsdData, options: NSDataSearchOptions(0), range: NSMakeRange(0, socketStructData.length))
  let macAddressData = socketStructData.subdataWithRange(NSMakeRange(rangeOfToken.location + 3, MAC_ADDRESS_LENGTH))
  var macAddressDataBytes = [UInt8](count: MAC_ADDRESS_LENGTH, repeatedValue: 0)
  macAddressData.getBytes(&macAddressDataBytes, length: MAC_ADDRESS_LENGTH)
  let addressBytes = macAddressDataBytes.map({ String(format:"%02x", $0) })

  return join(separator, addressBytes)
}


MACAddressForBSD("en0")

Answer 3

更新Martin R的条目。有几行不能用Swift 2.1编译。

变化：

let matchingDict = matchingDictUM.takeUnretainedValue() as NSMutableDictionary

要：

let matchingDict = matchingDictUM as NSMutableDictionary

变化：

let macAddressAsString = ":".join(macAddress.map( { String(format:"%02x", $0) } ))

要：

let macAddressAsString = macAddress.map( { String(format:"%02x", $0) } ).joinWithSeparator(":")

Answer 4

针对Swift 4.2的更新

func FindEthernetInterfaces() -> io_iterator_t? {

    let matchingDictUM = IOServiceMatching("IOEthernetInterface");
    // Note that another option here would be:
    // matchingDict = IOBSDMatching("en0");
    // but en0: isn't necessarily the primary interface, especially on systems with multiple Ethernet ports.

    if matchingDictUM == nil {
        return nil
    }

    let matchingDict = matchingDictUM! as NSMutableDictionary
    matchingDict["IOPropertyMatch"] = [ "IOPrimaryInterface" : true]

    var matchingServices : io_iterator_t = 0
    if IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &matchingServices) != KERN_SUCCESS {
        return nil
    }

    return matchingServices
}

// Given an iterator across a set of Ethernet interfaces, return the MAC address of the last one.
// If no interfaces are found the MAC address is set to an empty string.
// In this sample the iterator should contain just the primary interface.
func GetMACAddress(_ intfIterator : io_iterator_t) -> [UInt8]? {

    var macAddress : [UInt8]?

    var intfService = IOIteratorNext(intfIterator)
    while intfService != 0 {

        var controllerService : io_object_t = 0
        if IORegistryEntryGetParentEntry(intfService, kIOServicePlane, &controllerService) == KERN_SUCCESS {

            let dataUM = IORegistryEntryCreateCFProperty(controllerService, "IOMACAddress" as CFString, kCFAllocatorDefault, 0)
            if dataUM != nil {
                let data = (dataUM!.takeRetainedValue() as! CFData) as Data
                macAddress = [0, 0, 0, 0, 0, 0]
                data.copyBytes(to: &macAddress!, count: macAddress!.count)
            }
            IOObjectRelease(controllerService)
        }

        IOObjectRelease(intfService)
        intfService = IOIteratorNext(intfIterator)
    }

    return macAddress
}


func getMacAddress() -> String? {
    var macAddressAsString : String?
    if let intfIterator = FindEthernetInterfaces() {
        if let macAddress = GetMACAddress(intfIterator) {
            macAddressAsString = macAddress.map( { String(format:"%02x", $0) } ).joined(separator: ":")
            print(macAddressAsString!)
        }

        IOObjectRelease(intfIterator)
    }
    return macAddressAsString
}

Answer 5

您也可以使用“系统配置”框架

import SystemConfiguration

func collectMACAddresses() -> [String] {
    guard let interfaces = SCNetworkInterfaceCopyAll() as? [SCNetworkInterface] else {
        return []
    }
    
    return interfaces
        .map(SCNetworkInterfaceGetHardwareAddressString)
        .compactMap { $0 as String? }
}

Answer 6

免责声明：这是不生产就绪。它可能会被App Store拒绝。如果ifconfig的输出在将来发生变化，它也会出错。 我之所以这样做是因为我缺乏翻译C代码的技能。链接。它不能取代完整的Swift解决方案。话虽如此，它有效......

获取ifconfig的输出并解析它以获取与接口关联的MAC地址（在此示例中为en0）：

let theTask = NSTask()
let taskOutput = NSPipe()
theTask.launchPath = "/sbin/ifconfig"
theTask.standardOutput = taskOutput
theTask.standardError = taskOutput
theTask.arguments = ["en0"]

theTask.launch()
theTask.waitUntilExit()

let taskData = taskOutput.fileHandleForReading.readDataToEndOfFile()

if let stringResult = NSString(data: taskData, encoding: NSUTF8StringEncoding) {
    if stringResult != "ifconfig: interface en0 does not exist" {
        let f = stringResult.rangeOfString("ether")
        if f.location != NSNotFound {
            let sub = stringResult.substringFromIndex(f.location + f.length)
            let range = Range(start: advance(sub.startIndex, 1), end: advance(sub.startIndex, 18))
            let result = sub.substringWithRange(range)
            println(result)
        }
    }
}

如何使用Swift从OSX获取MAC地址

6 个答案: