iOS - 获取 ARP 表-移动开发问题

iOS - Get ARP table(iOS - 获取 ARP 表)

本文介绍了iOS - 获取 ARP 表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试构建网络扫描仪.我知道这个过程，所以我想 ping 网络中所有可用的主机，然后获取 ARP 表，这样我就可以映射每个 IP 的 MAC 地址.我在 Google 上搜索了 ARP 表，但没有找到如何实现此功能的任何指南.我还在 Stack Overflow 上发现了这些类似的问题:

I am trying to build a network scanner. I know the procedure so I want to ping all available hosts in the network and then get the ARP table so I can map the MAC address for each IP. I Googled for ARP table but I didn't find any guide how to implement this feature. I also found these similar questions on Stack overflow:

Link1

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?

The answer are unclear on how to implement the ARP feature. Is there any official guide for this one? Is Apple approving the ARP table feature?

推荐答案

10.2后更新

检查库这里

我终于搞定了，所以我将详细发布该过程以节省其他人的时间:

I finally got it working so I will post the procedure in detail to save some time for other guys:

转到 Applications 并右键单击 Xcode -> Show package contents 并浏览到:Developer ▸ Platforms ▸ MacOSX.platform ▸ Developer ▸ SDKs ▸ MacOSX10.10.sdk ▸ usr ▸ include.从net"文件夹复制 route.h 和 if_types.h 并从netinet"文件夹复制 if_ether.h 到您的 Xcode项目.
然后导入以下.m和.h文件:

Go to Applications and right click on Xcode -> Show package contents and browse to: Developer ▸ Platforms ▸ MacOSX.platform ▸ Developer ▸ SDKs ▸ MacOSX10.10.sdk ▸ usr ▸ include. From "net" folder copy the route.h and if_types.h and from the "netinet" folder copy the if_ether.h into your Xcode project.
Then import the following .m and .h files:

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