wifi,网关相关标识的获取

获取WIFI的相关信息

 - (void)getWifiInfo
 {
     NSArray *ifs = (__bridge_transfer NSArray *)CNCopySupportedInterfaces();
     if (!ifs) {
         return ;
     }
     NSDictionary *info = nil;
     for (NSString *ifnam in ifs) {
         info = (__bridge_transfer NSDictionary *)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
         if (info && [info count]) {
             break;
         }
     }
     NSLog(@"WIFI名称 %@    MAC地址 %@",info[@"SSID"],info[@"BSSID"]);
 }

获取WIFI网关以及子网掩码，端口等信息

 - (NSMutableDictionary *)getLocalInfoForCurrentWiFi {
     NSMutableDictionary *dict = [NSMutableDictionary dictionary];
     struct ifaddrs *interfaces = NULL;
     struct ifaddrs *temp_addr = NULL;
     int success = ;
     // retrieve the current interfaces - returns 0 on success
     success = getifaddrs(&interfaces);
     if (success == ) {
         // Loop through linked list of interfaces
         temp_addr = interfaces;
         //*/
         while(temp_addr != NULL) {
             if(temp_addr->ifa_addr->sa_family == AF_INET) {
                 // Check if interface is en0 which is the wifi connection on the iPhone
                 if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {
                     //----192.168.1.255 广播地址
                     NSString *broadcast = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_dstaddr)->sin_addr)];
                     if (broadcast) {
                         [dict setObject:broadcast forKey:@"broadcast"];
                     }
                     NSLog(@"broadcast address--%@",broadcast);
                     //--192.168.1.106 本机地址
                     NSString *localIp = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
                     if (localIp) {
                         [dict setObject:localIp forKey:@"localIp"];
                     }
                     NSLog(@"local device ip--%@",localIp);
                     //--255.255.255.0 子网掩码地址
                     NSString *netmask = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_netmask)->sin_addr)];
                     if (netmask) {
                         [dict setObject:netmask forKey:@"netmask"];
                     }
                     NSLog(@"netmask--%@",netmask);
                     //--en0 端口地址
                     NSString *interface = [NSString stringWithUTF8String:temp_addr->ifa_name];
                     if (interface) {
                         [dict setObject:interface forKey:@"interface"];
                     }
                     NSLog(@"interface--%@",interface);
                     return dict;
                 }
             }
             temp_addr = temp_addr->ifa_next;
         }
     }
     // Free memory
     freeifaddrs(interfaces);
     return dict;
 }