////  IPAddressInfo.h//  YXNETWORK////  http://www.cnblogs.com/YouXianMing/////  Copyright (c) 2014年 Y.X. All rights reserved.//#import <Foundation/Foundation.h>@interface IPAddressInfo : NSObject+ (NSDictionary *)net4Info;@end

////  IPAddressInfo.m//  YXNETWORK////  http://www.cnblogs.com/YouXianMing/////  Copyright (c) 2014年 Y.X. All rights reserved.//#import "IPAddressInfo.h"#import <sys/types.h>#import <sys/socket.h>#import <netdb.h>#import <arpa/inet.h>#include <ifaddrs.h>#include <arpa/inet.h>static NSMutableDictionary *net4 = nil;static NSMutableDictionary *net6 = nil;@implementation IPAddressInfo+ (void)initialize{    if (self == [IPAddressInfo class])    {        net4 = [NSMutableDictionary new];        net6 = [NSMutableDictionary new];    }}+ (NSDictionary *)net4Info{    [self updataInfo];        return net4;}+ (void)updataInfo{    struct ifaddrs *interfaces = NULL;    struct ifaddrs *temp_addr  = NULL;    int success = 0;        // 从当前接口中获取信息    success = getifaddrs(&interfaces);    if (success == 0)    {        // 遍历接口        temp_addr = interfaces;        for (temp_addr = interfaces; temp_addr != NULL; temp_addr = temp_addr->ifa_next)        {            if(temp_addr->ifa_addr->sa_family == AF_INET)            {                NSMutableDictionary *tmp = [NSMutableDictionary new];                                // INET4                char naddr[INET_ADDRSTRLEN];                char nmask[INET_ADDRSTRLEN];                char ngate[INET_ADDRSTRLEN];                                inet_ntop(AF_INET,&((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr,naddr,INET_ADDRSTRLEN);                inet_ntop(AF_INET,&((struct sockaddr_in *)temp_addr->ifa_netmask)->sin_addr,nmask,INET_ADDRSTRLEN);                inet_ntop(AF_INET,&((struct sockaddr_in *)temp_addr->ifa_dstaddr)->sin_addr,ngate,INET_ADDRSTRLEN);                                NSString *interfaceName = [NSString stringWithUTF8String:temp_addr->ifa_name];                NSString *address       = [NSString stringWithUTF8String:naddr];                NSString *netmask       = [NSString stringWithUTF8String:nmask];                NSString *gateway       = [NSString stringWithUTF8String:ngate];                                [tmp setObject:address forKey:@"address"];                [tmp setObject:netmask forKey:@"netmask"];                [tmp setObject:gateway forKey:@"gateway"];                                [net4 setObject:tmp forKey:interfaceName];                            }            else if(temp_addr->ifa_addr->sa_family == AF_INET6)            {                // INET6                char naddr[INET6_ADDRSTRLEN];                char ngate[INET6_ADDRSTRLEN];                                inet_ntop(AF_INET6,&((struct sockaddr_in6 *)temp_addr->ifa_addr)->sin6_addr,naddr,INET6_ADDRSTRLEN);                                NSString *tmpGateway = nil;                if ((struct sockaddr_in6 *)temp_addr->ifa_dstaddr != NULL)                {                    inet_ntop(AF_INET6,&((struct sockaddr_in6 *)temp_addr->ifa_dstaddr)->sin6_addr,ngate,INET6_ADDRSTRLEN);                    tmpGateway = [NSString stringWithUTF8String:ngate];                }                else                {                    tmpGateway = @" ";                }                //                NSString *interfaceName = [NSString stringWithUTF8String:temp_addr->ifa_name];//                NSString *address = [NSString stringWithUTF8String:naddr];//                NSString *netmask = @" ";//                NSString *gateway = tmpGateway;//                //                NSLog(@"%@", interfaceName);//                NSLog(@"%@", address);//                NSLog(@"%@", netmask);//                NSLog(@"%@", gateway);            }            else            {                continue;            }        }    }        // 释放资源    freeifaddrs(interfaces);}@end