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<td width="68%" background="DDl_back2.jpg" height="44"><big><big><font face="黑体"><p align="center">               ● UNIX网络编程                       (BM: clown)                </font></big></big></td></tr>
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<tr><td width="100%" colspan="2" height="100" align="center" valign="top"><br><p align="center">[<a href="index.htm">回到开始</a>][<a href="320.htm">上一层</a>][<a href="454.htm">下一篇</a>]
<hr><p align="left"><small>发信人: guru ( Darkness), 信区: UNP <br>

标  题: 查看本机是否为混杂模式 <br>

发信站: UNIX编程 (2001年07月12日09:48:38 星期四), 站内信件 <br>

  <br>

>转贴者注：相关内容请看UNP16章 ioctl部分。 <br>

>自己刚看了这本分，可惜没环境编译。：（以后了。：） <br>

/* <br>

  察看本机interface是否被设为混杂模式的小程序 <br>

  在redhat6.2,freebsd4.3均通过测试。 <br>

  solaris下这样编译： <br>

  gcc -o checkpromiscuous checkpromiscuous -lsocket <br>

  by e4gle<e4gle@hackermail.com> from e4gle.org <br>

*/ <br>

#include <stdio.h> <br>

#include <sys/types.h> <br>

#include <sys/uio.h> <br>

#include <sys/ioctl.h> <br>

#include <sys/socket.h> <br>

#include <net/if.h> <br>

#define MAXINTERFACES   16 <br>

#ifndef MLEN <br>

#define MLEN 128                        /* needed for slcompress.h */ <br>

#endif <br>

#endif <br>

#ifndef _SYS_MAP_H <br>

#define _SYS_MAP_H <br>

#pragma ident   "@(#)map.h      1.26    99/09/13 SMI" <br>

#ifdef  __cplusplus <br>

extern "C" { <br>

#endif <br>

struct map; <br>

#ifdef _KERNEL <br>

extern  void    rmfree(void *, size_t, ulong_t); <br>

extern  ulong_t rmalloc(void *, size_t); <br>

extern  ulong_t rmalloc_wait(void *, size_t); <br>

extern  ulong_t rmalloc_locked(void *, size_t); <br>

extern  void    *rmallocmap(size_t); <br>

extern  void    *rmallocmap_wait(size_t); <br>

extern  void    rmfreemap(void *); <br>

#endif /* KERNEL */ <br>

#ifdef  __cplusplus <br>

} <br>

#endif <br>

#endif /* _SYS_MAP_H */ <br>

#define SIOCGIFCONF 0x8912 <br>

#define SIOCGIFFLAGS    0x8913 <br>



main (argc, argv) <br>

register int argc; <br>

register char *argv[]; <br>

{ <br>

   register int fd, intrface, nr_promiscuous_devices = 0; <br>

   struct ifreq buf[MAXINTERFACES]; <br>

   struct ifconf ifc; <br>

   printf("***************************************************************** <br>

**************\n"); <br>

   printf("*The program is which to see the interface have being promiscuous <br>

 mode or not.*\n"); <br>

   printf("*                                  code&upgrade by e4gle<e4gle@ha <br>

ckermail.com>*\n"); <br>

   printf("***************************************************************** <br>

**************\n"); <br>

   printf("\n"); <br>

    if ((fd = socket (AF_INET, SOCK_DGRAM, 0)) >= 0) { <br>

        ifc.ifc_len = sizeof buf; <br>

        ifc.ifc_buf = (caddr_t) buf; <br>

        if (!(ioctl (fd, SIOCGIFCONF, (char *) &ifc))) { <br>

        intrface = ifc.ifc_len / sizeof (struct ifreq); <br>

        if (!intrface) { <br>



            (void)fprintf(stderr, "checkpromiscuous: Not found the network inter <br>

fa <br>

ces.\n"); <br>

            (void)exit(0); <br>

        } <br>

        (void)fprintf(stderr, "%d network interfaces found:\n", intrface); <br>

        while (intrface-- > 0) { <br>

            (void)fprintf (stderr, "  %s: ", buf[intrface].ifr_name); <br>

            if (!(ioctl(fd, SIOCGIFFLAGS, (char *) &buf[intrface]))) { <br>

            if (buf[intrface].ifr_flags & IFF_PROMISC) { <br>

                (void)fprintf (stderr, "*** IN PROMISCUOUS MODE ***\n"); <br>

                nr_promiscuous_devices++; <br>

            } else { <br>

                (void)fprintf (stderr, "Normal\n"); <br>

            } <br>

            } else { <br>

            char str[256]; <br>

            (void)sprintf (str, "checkpromiscuous: ioctl device %s", buf[intrfac <br>

e].if <br>

r_name); <br>

            perror(str); <br>

            } <br>



        } <br>

    } else <br>

        perror ("checkpromiscuous: ioctl"); <br>

    } else <br>

    perror ("checkpromiscuous: socket"); <br>

    (void)close (fd); <br>

    (void)fprintf (stderr, "%d of them %s in promiscuous mode.\n", <br>

    nr_promiscuous_devices, nr_promiscuous_devices==1 ? "is" : "are"); <br>

        return nr_promiscuous_devices; <br>

} <br>

  <br>

  <br>

-- <br>

telnet apue.dhs.org 2323 or http://apue.dhs.org <br>

APUE:UNIX环境编程 <br>

UNP:UNIX网络编程 <br>

UKP:UNIX内核编程 <br>

BIBLE:高手传经 <br>

FTPDOC:资源共享 <br>

※ 来源:·UNIX编程 www.tiaozhan.com/unixbbs/·[FROM: 202.114.36.177] <br>

</small><hr>
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