我有以下代码可以成功检索连接到路由器的所有IP。但是我需要获取每个IP的MAC地址。
因此[ips],与其将地址作为数组返回,而不是将其作为字典返回[ips:0000000, mac: 000000]
[ips]
[ips:0000000, mac: 000000]
是否可以通过更改以下代码来实现从如何快速获取Ip地址?
func getIFAddresses() -> [String] { print("GET IF ADDRESSSE") var addresses = [String]() // Get list of all interfaces on the local machine: var ifaddr : UnsafeMutablePointer<ifaddrs> = nil if getifaddrs(&ifaddr) == 0 { print("getifaddrs\(getifaddrs)") // For each interface ... for (var ptr = ifaddr; ptr != nil; ptr = ptr.memory.ifa_next) { let flags = Int32(ptr.memory.ifa_flags) var addr = ptr.memory.ifa_addr.memory print("flags\(flags)") print("addr\(addr)") // Check for running IPv4, IPv6 interfaces. Skip the loopback interface. 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) { print("addr.sa_family\(addr.sa_family)") // Convert interface address to a human readable string: var hostname = [CChar](count: Int(NI_MAXHOST), repeatedValue: 0) print("hostname\(hostname)") if (getnameinfo( &addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) == 0) { if let address = String.fromCString(hostname) { addresses.append(address) } } } } } freeifaddrs(ifaddr) print("freeifaddrs\(freeifaddrs)") } print("ADDRESSES \(addresses)") return addresses
}
( 备注/说明: 这是对 “管理ifaddrs在Swift中也返回MAC地址” 和 “是否可以修改 如何快速获取Ip地址中的代码 以也返回MAC地址” 的问题的答案 。 这不是 “检索连接到我的路由器的所有IP” 的解决方案, 问题正文中也提到了该解决方案。)
这是参考代码的扩展,该代码以 (接口名称,ip地址,MAC地址) 元组的数组形式返回本地(正在运行的接口 ) 。从类型的接口检索MAC地址,这些接口AF_LINK 作为sockaddr_dl结构存储在接口列表中。这是一个可变长度的结构,Swift的严格类型系统使指针变乱成为必要。
AF_LINK
sockaddr_dl
重要说明: 该代码旨在在Mac计算机上运行。在iOS设备上获取MAC地址不起作用。为了保护隐私,iOS 故意 为所有接口的硬件地址返回“02:00:00:00:00:00”作为硬件地址,
func getInterfaces() -> [(name : String, addr: String, mac : String)] { var addresses = [(name : String, addr: String, mac : String)]() var nameToMac = [ String : String ]() // Get list of all interfaces on the local machine: var ifaddr : UnsafeMutablePointer<ifaddrs> = nil if getifaddrs(&ifaddr) == 0 { // For each interface ... var ptr = ifaddr while ptr != nil { defer { ptr = ptr.memory.ifa_next } let flags = Int32(ptr.memory.ifa_flags) let addr = ptr.memory.ifa_addr if let name = String.fromCString(ptr.memory.ifa_name) { // Check for running IPv4, IPv6 interfaces. Skip the loopback interface. if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) { if addr.memory.sa_family == UInt8(AF_LINK) { // Get MAC address from sockaddr_dl structure and store in nameToMac dictionary: let dl = UnsafePointer<sockaddr_dl>(ptr.memory.ifa_addr) let lladdr = UnsafeBufferPointer(start: UnsafePointer<Int8>(dl) + 8 + Int(dl.memory.sdl_nlen), count: Int(dl.memory.sdl_alen)) if lladdr.count == 6 { nameToMac[name] = lladdr.map { String(format:"%02hhx", $0)}.joinWithSeparator(":") } } if addr.memory.sa_family == UInt8(AF_INET) || addr.memory.sa_family == UInt8(AF_INET6) { // Convert interface address to a human readable string: var hostname = [CChar](count: Int(NI_MAXHOST), repeatedValue: 0) if (getnameinfo(addr, socklen_t(addr.memory.sa_len), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) == 0) { if let address = String.fromCString(hostname) { addresses.append( (name: name, addr: address, mac : "") ) } } } } } } freeifaddrs(ifaddr) } // Now add the mac address to the tuples: for (i, addr) in addresses.enumerate() { if let mac = nameToMac[addr.name] { addresses[i] = (name: addr.name, addr: addr.addr, mac : mac) } } return addresses }
您必须添加
#include <ifaddrs.h> #include <net/if_dl.h>
到桥接头文件进行编译。
用法示例:
for addr in getInterfaces() { print(addr) } // ("en0", "fe80::1234:7fff:fe2e:8765%en0", "a9:55:6f:2e:57:78") // ("en0", "192.168.2.108", "a9:55:6f:2e:57:78") // ...
Swift 3(Xcode 8)更新:
func getInterfaces() -> [(name : String, addr: String, mac : String)] { var addresses = [(name : String, addr: String, mac : String)]() var nameToMac = [ String: String ]() // Get list of all interfaces on the local machine: var ifaddr : UnsafeMutablePointer<ifaddrs>? guard getifaddrs(&ifaddr) == 0 else { return [] } guard let firstAddr = ifaddr else { return [] } // For each interface ... for ptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) { let flags = Int32(ptr.pointee.ifa_flags) if let addr = ptr.pointee.ifa_addr { let name = String(cString: ptr.pointee.ifa_name) // Check for running IPv4, IPv6 interfaces. Skip the loopback interface. if (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) { switch Int32(addr.pointee.sa_family) { case AF_LINK: // Get MAC address from sockaddr_dl structure and store in nameToMac dictionary: addr.withMemoryRebound(to: sockaddr_dl.self, capacity: 1) { dl in dl.withMemoryRebound(to: Int8.self, capacity: 8 + Int(dl.pointee.sdl_nlen + dl.pointee.sdl_alen)) { let lladdr = UnsafeBufferPointer(start: $0 + 8 + Int(dl.pointee.sdl_nlen), count: Int(dl.pointee.sdl_alen)) if lladdr.count == 6 { nameToMac[name] = lladdr.map { String(format:"%02hhx", $0)}.joined(separator: ":") } } } case AF_INET, AF_INET6: // Convert interface address to a human readable string: var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST)) if (getnameinfo(addr, socklen_t(addr.pointee.sa_len), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) == 0) { let address = String(cString: hostname) addresses.append( (name: name, addr: address, mac : "") ) } default: break } } } } freeifaddrs(ifaddr) // Now add the mac address to the tuples: for (i, addr) in addresses.enumerated() { if let mac = nameToMac[addr.name] { addresses[i] = (name: addr.name, addr: addr.addr, mac : mac) } } return addresses }