最近的项目中需要获取wifi的相关信息, 包括SSID, BSSID, IP, 以及手机是否开始蜂窝网络, 是否开启个人热点等, 所以这里做一个汇总, 记录一下.
注意: 以下所有代码均为swift 4.0, 如果需要低版本语言的写法, 介于篇幅, 就不一一列举了, 有需要的小伙伴可以私信留言.
检查是否有网络(false 没有网络，true 有网络)
class func isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) { (unSafePointer) in
SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer.init(OpaquePointer.init(unSafePointer))!)
}
var flags: SCNetworkReachabilityFlags = []
if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false {
return false
}
let isReachable = flags.contains(.reachable)
let needsConnection = flags.contains(.connectionRequired)
return isReachable && !needsConnection
}
获取当前wifi的ssid
func getSSidInfo() -> String {
if let cfas: NSArray = CNCopySupportedInterfaces() {
for cfa in cfas {
if let dict = CFBridgingRetain(CNCopyCurrentNetworkInfo(cfa as! CFString)) {
let dic = dict as! NSDictionary
if let ssid = dic["SSID"] as? String {
return ssid
}
}
}
}
return "未连接"
}
获取当前wifi的IP地址
func getIPAddress() -> String {
var address = ""
// 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 {
let interface = ptr?.pointee
// Check for IPv4 or IPv6 interface:
let addrFamily = interface?.ifa_addr.pointee.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
// Check interface name:
let name = String(cString: (interface?.ifa_name)!)
if name == "en0" {
// Convert interface address to a human readable string:
var addr = interface?.ifa_addr.pointee
var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))
getnameinfo(&addr!, socklen_t(interface!.ifa_addr.pointee.sa_len),
&hostname, socklen_t(hostname.count),
nil, socklen_t(0), NI_NUMERICHOST)
address = String.init(cString: hostname)
}
}
ptr = ptr?.pointee.ifa_next
}
freeifaddrs(ifaddr)
}
return (address == "") ? "255.255.255.255" : address
}
检测系统此时正在使用的wifi情况(SSID,BSSID(mac))
func getWifiInfo() -> (ssid: String, mac: String) {
if let cfas: NSArray = CNCopySupportedInterfaces() {
for cfa in cfas {
if let dict = CFBridgingRetain(CNCopyCurrentNetworkInfo(cfa as! CFString)) {
let dic = dict as! NSDictionary
if let ssid = dic["SSID"] as? String, let bssid = dic["BSSID"] as? String {
return (ssid, bssid)
}
}
}
}
return ("未连接", "未知")
}
获取手机当前所有的网络信息(便于蜂窝网络&个人热点的判断)
func getAllIfaName() -> [String] {
var ifaNames = [String]()
var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil
if getifaddrs(&ifaddr) == 0 {
var temp_addr = ifaddr
while temp_addr != nil {
let interface = temp_addr?.pointee
let addrFamily = interface?.ifa_addr.pointee.sa_family
if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) {
let ifaName = String.init(utf8String: (interface?.ifa_name)!)
if ifaName != nil {
ifaNames.append(ifaName!)
}
}
temp_addr = temp_addr?.pointee.ifa_next
}
}
return ifaNames
}
判断手机是否连接蜂窝网络
func judgeCellularNetworkLinkStatus() -> Bool {
let ifaNames = getAllIfaName()
for item in ifaNames {
if item.contains("pdp_ip") {
return true
}
}
return false
}
判断手机是否开启个人热点(此方法通过遍历所有ipv4网卡，查询网卡名称是否包含“bridge”即可判断当前热点是否启动,但是并不能准确的判断出,因为只有两种情况下才会出现以上情况,1.当前有设备连上此热点, 2.曾经连过,但是后来断开,但是个人热点在这个过程中未重新启动过)
func judgeHotPointIsOpen() -> Bool {
let ifaNames = getAllIfaName()
for item in ifaNames {
if item.contains("bridge") {
return true
}
}
return false
}
处理wifi的BSSID转换为常用的mac地址
func getMacInAPStyle() -> String {
let bssid = getWifiInfo().mac
return bssidToDeviceMac(bssid: bssid).uppercased() // 转换为大写
}
fileprivate func bssidToDeviceMac(bssid: String) -> String {
let charAry = bssid.components(separatedBy: ":")
// 补足数据中只有一位的问题, 便于后面的数据拼接
var newCharAry = [String]()
for item in charAry {
var newItem = ""
if item.length == 1 {
newItem = "0" + item
} else {
newItem = item
}
newCharAry.append(newItem)
}
var newBssid = ""
for item in newCharAry {
newBssid += item
}
let decimal = newBssid.hexToDecimal()
let mac = (decimal - 1).decimalToHex()
return mac
}
