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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="155.htm">上一层</a>][<a href="181.htm">下一篇</a>]
<hr><p align="left"><small>发信人: digger (欧阳疯), 信区: Socket <br>
标 题: RAW sockets example code: ipicmp.c <br>
发信站: 华南网木棉站 (Wed Aug 5 19:59:56 1998), 转信 <br>
/* Attempt to send an ICMP packet, writing the ICMP and IP headers. <br>
* (Lacks adding the time to the end of the packet). <br>
* Thamer Al-Herbish shadows@whitefang.com <br>
*/ <br>
#include <stdlib.h> <br>
#include <stdio.h> <br>
#include <sys/types.h> <br>
#include <sys/socket.h> <br>
#include <netinet/in.h> <br>
#include <arpa/inet.h> <br>
#include <netinet/in_systm.h> <br>
#include <netinet/ip.h> <br>
#include <netinet/ip_icmp.h> <br>
#if defined(SOLARIS_CKSUM_BUG) <br>
#include <netinet/tcp.h> <br>
#endif <br>
#include <strings.h> <br>
#include <unistd.h> <br>
#if !defined(HAVE_INCKSUM) <br>
#include <checksum.h> <br>
#endif <br>
#if !defined(IPVERSION) <br>
#define IPVERSION 4 /* Incase some system does not have this definition. */ <br>
<br>
#endif /* We'll always be using 4 as the version anyway. */ <br>
#if !defined(LINUX) <br>
#define BUFFSIZE (sizeof(struct icmp) + sizeof(struct ip)) <br>
#else <br>
#define BUFFSIZE (sizeof(struct icmphdr) + sizeof(struct iphdr)) <br>
#endif <br>
int main(int argc,char *argv[]) <br>
{ <br>
#if !defined (LINUX) <br>
struct icmp *icmphdr; <br>
struct ip *iphdr; <br>
#else <br>
struct icmphdr *icmphdr; <br>
struct iphdr *iphdr; <br>
#endif <br>
unsigned char buff[BUFFSIZE]; <br>
int sockd; <br>
struct sockaddr_in mysocket; <br>
int on = 1; <br>
if(argc < 3) { <br>
fprintf(stderr,"usage: %s source-ip dest-ip\n",argv[0]); <br>
exit(-1); <br>
} <br>
if((sockd = socket(AF_INET,SOCK_RAW,IPPROTO_RAW)) < 0) { <br>
perror("socket"); <br>
exit(-1); <br>
} <br>
if(setsockopt(sockd,IPPROTO_IP,IP_HDRINCL,(char *)&on,sizeof(on)) < 0) { <br>
perror("setsockopt"); <br>
exit(-1); <br>
} <br>
#if !defined(LINUX) <br>
iphdr = (struct ip *)buff; <br>
bzero((char *)iphdr,sizeof(struct ip)); <br>
iphdr->ip_hl = 5; <br>
iphdr->ip_v = IPVERSION; <br>
#ifdef IP_LEN_HORDER <br>
iphdr->ip_len = (sizeof(struct ip) + sizeof(struct icmp)); <br>
#else <br>
iphdr->ip_len = htons(sizeof(struct ip) + sizeof(struct icmp)); <br>
#endif <br>
iphdr->ip_id = htons(getpid()); <br>
iphdr->ip_ttl = 60; <br>
iphdr->ip_p = IPPROTO_ICMP; <br>
iphdr->ip_src.s_addr = inet_addr(argv[1]); <br>
iphdr->ip_dst.s_addr = inet_addr(argv[2]); <br>
iphdr->ip_sum = in_cksum((unsigned short *)iphdr,sizeof(struct ip)); <br>
icmphdr = (struct icmp *)(buff + sizeof(struct ip)); <br>
bzero((char *)icmphdr,sizeof(struct icmp)); <br>
icmphdr->icmp_type = ICMP_ECHO; <br>
icmphdr->icmp_seq = getpid(); <br>
icmphdr->icmp_id = getpid(); <br>
icmphdr->icmp_cksum = in_cksum((unsigned short *)icmphdr,sizeof(struct icm <br>
p)); <br>
#else <br>
iphdr = (struct iphdr *)buff; <br>
bzero((char *)iphdr,sizeof(struct iphdr)); <br>
iphdr->ihl = 5; <br>
iphdr->version = IPVERSION; <br>
#ifdef IP_LEN_HORDER <br>
iphdr->tot_len = (sizeof(struct iphdr) + sizeof(struct icmphdr)); <br>
#else <br>
#else <br>
iphdr->tot_len = htons(sizeof(struct iphdr) + sizeof(struct icmphdr)); <br>
#endif <br>
iphdr->id = htons(getpid()); <br>
iphdr->ttl = 60; <br>
iphdr->protocol = IPPROTO_ICMP; <br>
iphdr->saddr = inet_addr(argv[1]); <br>
iphdr->daddr = inet_addr(argv[2]); <br>
iphdr->check = in_cksum((unsigned short *)iphdr,sizeof(struct iphdr)); <br>
icmphdr = (struct icmphdr *)(buff +sizeof(struct iphdr)); <br>
bzero((char *)icmphdr,sizeof(struct icmphdr)); <br>
icmphdr->type = ICMP_ECHO; <br>
icmphdr->un.echo.sequence = getpid(); <br>
icmphdr->un.echo.id = getpid(); <br>
icmphdr->checksum = in_cksum((unsigned short *)icmphdr, <br>
sizeof(struct icmphdr)); <br>
#endif /* LINUX */ <br>
bzero((char *)&mysocket,sizeof(mysocket)); <br>
mysocket.sin_family = AF_INET; <br>
mysocket.sin_addr.s_addr = inet_addr(argv[2]); <br>
if(sendto(sockd,(char *)buff,sizeof(buff),0x0, <br>
(struct sockaddr *)&mysocket,sizeof(mysocket)) < 0) { <br>
perror("sendto"); <br>
exit(-1); <br>
} <br>
exit(0); <br>
} <br>
-- <br>
#################### <br>
# 遥 眺 淑 女 # <br>
####################################### <br>
# 君 子 好 球 # <br>
#################### <br>
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