在某些需求下,可能会让我们采集用户手机的ip 或Wifi 信息

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//Swift 获取wifi的名字
import SystemConfiguration
private func getUsedSSID() -> String{
        let interfaces = CNCopySupportedInterfaces()
        var ssid = ""
        if interfaces != nil {
            let interfacesArray = CFBridgingRetain(interfaces) as! [AnyObject]
            if interfacesArray.count > 0 {
                let interfaceName = interfacesArray[0] as! CFString
                let ussafeInterfaceData = CNCopyCurrentNetworkInfo(interfaceName)
                if (ussafeInterfaceData != nil) {
                    let interfaceData = ussafeInterfaceData as! [String: Any]
                    ssid = interfaceData["SSID"]! as! String
//                    let data = interfaceData["SSIDDATA"] as! Data
//                    let str = String(data: data, encoding: String.Encoding.utf8)
//                    print(str ?? "无")
                }
            }
        }
        return ssid
    }
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//ip地址
class func GetIPAddresses() -> String? {
        var addresses = [String]()
        
        var ifaddr : UnsafeMutablePointer<ifaddrs>?
        if getifaddrs(&ifaddr) == 0 {
            var ptr = ifaddr
            while (ptr != nil) {
                let flags = Int32(ptr!.pointee.ifa_flags)
                var addr = ptr!.pointee.ifa_addr.pointee
                if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) {
                    if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
                        var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))
                        if (getnameinfo(&addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count),nil, socklen_t(0), NI_NUMERICHOST) == 0) {
                            if let address = String(validatingUTF8:hostname) {
                                addresses.append(address)
                            }
                        }
                    }
                }
                ptr = ptr!.pointee.ifa_next
            }
            freeifaddrs(ifaddr)
        }
        return addresses.first
    }