iOS - 获取ARP表

Question

我正在尝试构建网络扫描程序.我知道程序,所以我想ping网络中的所有可用主机,然后获取ARP表,以便我可以映射每个IP的MAC地址.我用Google搜索了ARP表,但我没有找到任何指南如何实现此功能.我还在Stack溢出时发现了类似的问题:

链接1

LINK2

关于如何实现ARP功能的答案尚不清楚.这个有官方指南吗？Apple是否批准ARP表功能？

Answer 1

10.2之后的更新

在这里查看图书馆

我终于搞定了,所以我会详细发布这个程序,为其他人节省一些时间:

1. 转到应用程序并右键单击Xco​​de - >显示包装内容并浏览至:开发人员▸平台▸MacOSX.platform▸开发人员▸SDKs▸MacOSX10.10.sdk▸使用▸包含.从"网络"文件夹中复制route.h,并if_types.h从"netinet"文件夹中复制if_ether.h到您的Xcode项目.
2. 然后导入以下.m和.h文件:

MacFinder.h

#import <Foundation/Foundation.h>
#include <sys/param.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/sysctl.h>

#include <net/if.h>
#include <net/if_dl.h>
#include "if_types.h"

#if TARGET_IPHONE_SIMULATOR
#include <net/route.h>
#else
#include "route.h"
#endif

#include "if_ether.h"
#include <netinet/in.h>


#include <arpa/inet.h>

#include <err.h>
#include <errno.h>
#include <netdb.h>

#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

@interface MacFinder : NSObject{

    int nflag;
}

-(NSString*) ip2mac: (char*)ip;

@end

MacFinder.m

#import "MacFinder.h"

@implementation MacFinder
-(NSString*) ip2mac: (char*)ip
{
    int  found_entry = 0;



    NSString *mAddr = nil;
    u_long addr = inet_addr(ip);
    int mib[6];
    size_t needed;
    char *host, *lim, *buf, *next;
    struct rt_msghdr *rtm;
    struct sockaddr_inarp *sin;
    struct sockaddr_dl *sdl;
    extern int h_errno;
    struct hostent *hp;

    mib[0] = CTL_NET;
    mib[1] = PF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_INET;
    mib[4] = NET_RT_FLAGS;
    mib[5] = RTF_LLINFO;
    if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
        err(1, "route-sysctl-estimate");
    if ((buf = malloc(needed)) == NULL)
        err(1, "malloc");
    if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
        err(1, "actual retrieval of routing table");


    lim = buf + needed;
    for (next = buf; next < lim; next += rtm->rtm_msglen) {
        rtm = (struct rt_msghdr *)next;
        sin = (struct sockaddr_inarp *)(rtm + 1);
        sdl = (struct sockaddr_dl *)(sin + 1);
        if (addr) {
            if (addr != sin->sin_addr.s_addr)
                continue;
            found_entry = 1;
        }
        if (nflag == 0)
            hp = gethostbyaddr((caddr_t)&(sin->sin_addr),
                               sizeof sin->sin_addr, AF_INET);
        else
            hp = 0;
        if (hp)
            host = hp->h_name;
        else {
            host = "?";
            if (h_errno == TRY_AGAIN)
                nflag = 1;
        }



        if (sdl->sdl_alen) {

            u_char *cp = LLADDR(sdl);

            mAddr = [NSString stringWithFormat:@"%x:%x:%x:%x:%x:%x", cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]];


            //  ether_print((u_char *)LLADDR(sdl));
        }
        else

            mAddr = nil;



    }


    if (found_entry == 0) {
        return nil;
    } else {
        return mAddr;
    }




}
@end

3. 然后导入您的MacFinder.h文件ViewController
4. 示例如何将其用于要查找MAC地址的每个主机:

MacFinder *mc = [[MacFinder alloc]init]; NSString *mac = [mc ip2mac:"192.168.10.24"]; NSLog(@"Mac:%@",mac);

如果您仍然有问题这里是教程,并在这里完整的工作项目(包括必要的文件)