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@@ -0,0 +1,648 @@
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//////////////////////////////////////////////////
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//Title : pub_inet_test.c
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//Auhtor : Liu Wei
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//Desc : public ipnet function test
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//Created : 2007-06-22
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//Revision :
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//
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//Revision :
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//
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//////////////////////////////////////////////////
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#include <stdio.h>
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#include <signal.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <netdb.h>
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#include <setjmp.h>
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#include <errno.h>
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#include <string.h>
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typedef unsigned char u8;
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typedef unsigned int u32;
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typedef unsigned short u16;
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typedef unsigned long long u64;
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#define MAXINTERFACES 16
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typedef struct EIF
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{
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u32 dIfIP;
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u8 uIfState;
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}
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EIF;
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typedef struct IF_ADDR
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{
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EIF tIfEntity[MAXINTERFACES];
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u8 uIfNum;
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}
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IfAddr;
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int GetNetIfInfo ( IfAddr * pIfAddr )
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{
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int fd;
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struct ifreq buf[MAXINTERFACES];
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struct arpreq arp;
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struct ifconf ifc;
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pIfAddr->uIfNum = 0;
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if( ( fd = socket ( AF_INET, SOCK_DGRAM, 0 ) ) >= 0 )
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{
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ifc.ifc_len = sizeof buf;
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ifc.ifc_buf = ( caddr_t ) buf;
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if( !ioctl ( fd, SIOCGIFCONF, ( char * ) &ifc ) )
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{
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int i;
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pIfAddr->uIfNum = ifc.ifc_len / sizeof ( struct ifreq );
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pIfAddr->uIfNum = pIfAddr->uIfNum % MAXINTERFACES;
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for ( i = 0; i < pIfAddr->uIfNum; i++ )
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{
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ioctl ( fd, SIOCGIFFLAGS, ( char * ) &buf[i] );
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pIfAddr->tIfEntity[i].uIfState = buf[i].ifr_flags & IFF_UP;
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if( !( ioctl ( fd, SIOCGIFADDR, ( char * ) &buf[i] ) ) )
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{
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pIfAddr->tIfEntity[i].dIfIP = ( ( struct sockaddr_in * )
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( &buf[i].ifr_addr ) )->sin_addr.s_addr;
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}
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}
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}
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}
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close ( fd );
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return pIfAddr->uIfNum;
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}
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#define PACKET_SIZE 4096
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#define MAX_NO_PACKETS 3
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struct sockaddr_in dest_addr;
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struct sockaddr_in from;
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struct timeval tvrecv;
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typedef void PingCallBack( int nPingResult );
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typedef struct ICMP_SERVICE
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{
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u8 uSrvState;
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u8 uPingResult;
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u8 uIcmpState;
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u8 uPackNo;
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u8 uDataLen;
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u8 nPackNumSend;
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u8 nPackNumRecv;
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u8 aSendBuff[PACKET_SIZE];
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u8 aRecvBuff[PACKET_SIZE];
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u32 wSockfd;
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pid_t tPid;
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struct protoent *pProtoent;
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PingCallBack *fCallBack;
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}
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IcmpSrv;
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IcmpSrv tIcmpSrvEntity;
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//校验和算法
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u16 IcmpCheckSum ( u16 *addr, int len )
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{
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int nleft = len;
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int sum = 0;
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u16 *w = addr;
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u16 answer = 0;
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//把ICMP报头二进制数据以2字节为单位累加起来
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while ( nleft > 1 )
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{
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sum += *w++;
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nleft -= 2;
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}
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//若ICMP报头为奇数个字节，会剩下最后一字节。
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//把最后一个字节视为一个2字节数据的高字节，这个2字节数据的低字节为0，继续累加
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if( nleft == 1 )
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{
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*( unsigned char * ) ( &answer ) = *( unsigned char * ) w;
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sum += answer;
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}
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sum = ( sum >> 16 ) + ( sum & 0xffff );
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sum += ( sum >> 16 );
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answer = ~sum;
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return answer;
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}
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//设置ICMP报头
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int IcmpPacking ( IcmpSrv *pIS )
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{
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int i, packsize;
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struct icmp *icmp;
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struct timeval *tval;
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icmp = ( struct icmp * ) pIS->aSendBuff;
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icmp->icmp_type = ICMP_ECHO;
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icmp->icmp_code = 0;
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icmp->icmp_cksum = 0;
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icmp->icmp_seq = pIS->nPackNumSend;
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icmp->icmp_id = pIS->tPid;
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packsize = 8 + pIS->uDataLen;
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//记录发送时间
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tval = ( struct timeval * ) icmp->icmp_data;
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gettimeofday ( tval, NULL );
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icmp->icmp_cksum = IcmpCheckSum ( (u16 *)icmp, packsize );
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return packsize;
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}
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//剥去ICMP报头
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int IcmpUnPack ( u8 *buf, int len , IcmpSrv *pIS )
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{
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int i, nIpHdrLen;
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struct ip *pIP;
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struct icmp *icmp;
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struct timeval *tvSend;
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struct timeval tvRecv;
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double rtt;
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gettimeofday ( &tvRecv, NULL );
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pIP = ( struct ip * ) buf;
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//求ip报头长度,即ip报头的长度标志乘4
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nIpHdrLen = pIP->ip_hl << 2;
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//越过ip报头,指向ICMP报头
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icmp = ( struct icmp * ) ( buf + nIpHdrLen );
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//ICMP报头及ICMP数据报的总长度
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len -= nIpHdrLen;
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if( len < 8 )
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//小于ICMP报头长度则不合理
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{
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printf ( "ICMP packets's length is less than 8 " );
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return 0;
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}
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//确保所接收的是我所发的的ICMP的回应
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if( ( icmp->icmp_type == ICMP_ECHOREPLY ) && ( icmp->icmp_id == pIS->tPid ) )
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{
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tvSend = ( struct timeval * ) icmp->icmp_data;
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rtt = ( tvRecv.tv_sec * 1000 + tvRecv.tv_usec / 1000 ) -
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( tvSend->tv_sec * 1000 + tvSend->tv_usec / 1000 );
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printf ( "%d byte from %s: icmp_seq=%u ttl=%d rtt=%.3f ms \n"
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, len, inet_ntoa ( from.sin_addr )
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, icmp->icmp_seq, pIP->ip_ttl, rtt
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);
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return 1;
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}
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return 0;
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}
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void IcmpStatis ( IcmpSrv *pIS )
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{
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int nSend , nRecv ;
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nSend = pIS->nPackNumSend;
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nRecv = pIS->nPackNumRecv;
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printf ( " --------------------PING statistics------------------- \n" );
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printf ( "%d packets transmitted, %d received , %%%d lost \n\n"
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, nSend, nRecv, ( nSend - nRecv ) / nSend * 100 );
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close ( pIS->wSockfd );
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pIS->uSrvState = 0;
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}
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//发送三个ICMP报文
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int IcmpSend ( IcmpSrv *pIS )
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{
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int nSize;
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if ( pIS->nPackNumSend < MAX_NO_PACKETS )
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{
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pIS->nPackNumSend++;
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nSize = IcmpPacking ( pIS );
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//设置ICMP报头
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if( sendto ( pIS->wSockfd, pIS->aSendBuff, nSize, 0,
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( struct sockaddr * ) &dest_addr, sizeof ( dest_addr ) ) < 0 )
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{
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perror ( "sendto error" );
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return 0;
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}
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printf("[IcmpSend] : Send icmp Pack %d \n" , pIS->nPackNumSend);
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return 1;
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}
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return 0;
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}
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//接收所有ICMP报文
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void IcmpRecv ( IcmpSrv *pIS )
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{
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int n, fromlen;
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extern int errno;
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fromlen = sizeof ( from );
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while ( pIS->nPackNumRecv < pIS->nPackNumSend )
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{
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if( ( n = recvfrom ( pIS->wSockfd, pIS->aRecvBuff, sizeof ( pIS->aRecvBuff ),
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0, ( struct sockaddr * ) &from, &fromlen ) ) < 0 )
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{
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if( errno == EINTR )
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continue;
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perror ( "recvfrom error" );
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continue;
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}
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if( IcmpUnPack ( pIS->aRecvBuff, n , pIS ) == -1 )
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continue;
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pIS->nPackNumRecv++;
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}
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}
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int PingInit ( IcmpSrv *pIS , int nDataLen )
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{
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memset( pIS , 0 , sizeof(IcmpSrv) );
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pIS->uSrvState = 0;
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pIS->uDataLen = 56;
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if( ( pIS->pProtoent = getprotobyname ( "icmp" ) ) == NULL )
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{
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perror ( "getprotobyname" );
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exit ( 1 );
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}
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// 回收root权限,设置当前用户权限
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setuid ( getuid ( ) );
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//获取main的进程id,用于设置ICMP的标志符
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pIS->tPid = getpid ( );
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}
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int PingTimer ( IcmpSrv *pIS )
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{
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if( pIS->uSrvState )
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{
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IcmpRecv( pIS );
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switch( pIS->uIcmpState )
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{
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case 1:
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case 2:
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case 3:
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IcmpSend( pIS );
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pIS->uIcmpState++;
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break;
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default:
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if( pIS->nPackNumRecv >= 3 )
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{
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IcmpStatis( pIS );
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pIS->fCallBack( 1 );
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}
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if( pIS->uIcmpState++ > 200 )
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{
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IcmpStatis( pIS );
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pIS->fCallBack( 0 );
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}
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break;
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}
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}
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}
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int PingStart( IcmpSrv *pIS , char *sIP , PingCallBack fCallBack )
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{
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int nSize;
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struct hostent *pHost;
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//struct in_addr *pInAddr;
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u32 nInetAddr;
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if( pIS->uSrvState )
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{
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return 0;
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}
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pIS->fCallBack = fCallBack;
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//生成使用ICMP的原始套接字,这种套接字只有root才能生成
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if( ( pIS->wSockfd = socket ( AF_INET, SOCK_RAW, pIS->pProtoent->p_proto ) ) < 0 )
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{
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perror ( "socket error" );
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exit ( 1 );
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}
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//扩大套接字接收缓冲区到50K这样做主要为了减小接收缓冲区溢出的
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//的可能性, 若无意中ping会引来大量应答
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setsockopt ( pIS->wSockfd, SOL_SOCKET, SO_RCVBUF, &nSize, sizeof ( nSize ) );
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bzero ( &dest_addr, sizeof ( dest_addr ) );
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dest_addr.sin_family = AF_INET;
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//判断是主机名还是ip地址
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nInetAddr = inet_addr ( sIP ) ;
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if( nInetAddr == INADDR_NONE )
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{
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if( ( pHost = gethostbyname ( sIP ) ) == NULL ) //是主机名
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{
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perror ( "gethostbyname error" );
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exit ( 1 );
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}
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memcpy ( ( char * ) &dest_addr.sin_addr, pHost->h_addr, pHost->h_length );
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}
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else //是ip地址
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{
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dest_addr.sin_addr.s_addr = nInetAddr;
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//memcpy( (char *)&dest_addr,(char *)&nInetAddr,host->h_length);
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}
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printf ( "PING %s(%s): %d bytes data in ICMP packets. \n", sIP
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, inet_ntoa ( dest_addr.sin_addr ) , pIS->uDataLen );
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pIS->uSrvState = 1 ;
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pIS->uIcmpState = 1;
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}
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//打印ip报文的信息
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void printIP ( char *packet, int len )
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{
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struct sockaddr_in addr_src, addr_dst;
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struct ip *pip = ( struct ip * ) packet;
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printf ( "ip head len:%d ", pip->ip_hl << 2 );
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printf ( "ip len:%d ", ntohs ( pip->ip_len ) );
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printf ( "ip pro id:%d ", pip->ip_p );
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printf ( "ip ttl:%d ", pip->ip_ttl );
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printf ( "ip offset:%d ", ntohs ( pip->ip_off ) & IP_OFFMASK );
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memset ( &addr_src, 0, sizeof ( struct sockaddr_in ) );
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memset ( &addr_dst, 0, sizeof ( struct sockaddr_in ) );
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memcpy ( &addr_src, &pip->ip_src, sizeof ( struct sockaddr_in ) );
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memcpy ( &addr_dst, &pip->ip_dst, sizeof ( struct sockaddr_in ) );
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printf ( "src ip:%x ", addr_src.sin_addr );
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printf ( "dst ip:%x ", addr_dst.sin_addr );
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}
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void NetCapPing( int nRet )
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{
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if( nRet )
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{
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printf("Host is rearchable\n");
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}
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else
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{
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printf("Host is not rearchable\n");
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}
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}
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static char *pStrEqTok = NULL;
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static u8 uStrEqState = 0;
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#define CNULL '\0'
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#define STR_CHECK_END(str,ch) ( str[strlen(str)-1] == ch )
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#define STR_CUT_LAST(str) ( str[strlen(str)-1] = CNULL )
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void StrTrimMoreSpace(char *pStr )
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{
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char *pSrc , *pDst , *pCh;
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pDst = pStr;
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pCh = pSrc = strdup( pStr );
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for( ; *pSrc ; pSrc++ )
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{
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if( !( isspace(*pSrc) && isspace( *(pSrc+1) ) ) )
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{
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*pDst++ = *pSrc;
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}
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}
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*pDst = CNULL;
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}
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char *StrEqTok( char *pStr )
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{
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char *p, *pCh;
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char *pDel = " ";
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pCh = NULL;
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if( pStr == NULL )
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{
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pStr = pStrEqTok;
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}
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else
|
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{
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pStr += strspn (pStr, pDel);
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if (*pStr == '\0')
|
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{
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pStrEqTok = NULL;
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return NULL;
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}
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StrTrimMoreSpace( pStr );
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}
|
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|
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if( pStr == NULL )
|
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{
|
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return NULL;
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}
|
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|
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uStrEqState = uStrEqState > 2 ? 0 : uStrEqState;
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pCh = strpbrk (pStr, pDel );
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if( pCh == NULL )
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{
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pStrEqTok = NULL;
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pCh = pStr;
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}
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else
|
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{
|
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pStrEqTok = pCh + 1;
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*pCh = CNULL;
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pCh = pStr;
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}
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p = strchr( pCh , '=');
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if( p == NULL )
|
||||
{
|
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if( pStrEqTok == NULL )
|
||||
{
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goto STREQTOK_CLEAN_UP;
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||||
}
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||||
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if( uStrEqState == 0 || uStrEqState == 2 )
|
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{ //expres left and right
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uStrEqState++;
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return pCh;
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}
|
||||
else
|
||||
{ //Miss '='
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goto STREQTOK_CLEAN_UP;
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}
|
||||
}
|
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else
|
||||
{
|
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if( uStrEqState == 0 && STR_CHECK_END( pCh , '=') )
|
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{ //expres left and '='
|
||||
uStrEqState+=2;
|
||||
STR_CUT_LAST(pCh);
|
||||
return pCh;
|
||||
}
|
||||
else if( uStrEqState == 1 && pCh[0] == '=')
|
||||
{ //'=' meet
|
||||
if( pCh[1] == CNULL )
|
||||
{
|
||||
if( pStrEqTok == NULL )
|
||||
{
|
||||
goto STREQTOK_CLEAN_UP;
|
||||
}
|
||||
pStr = pStrEqTok;
|
||||
pCh = strpbrk (pStr, pDel);
|
||||
if( pCh == NULL )
|
||||
{
|
||||
pStrEqTok = NULL;
|
||||
pCh = pStr;
|
||||
}
|
||||
else
|
||||
{
|
||||
pStrEqTok = pCh + 1;
|
||||
*pCh = CNULL;
|
||||
pCh = pStr;
|
||||
}
|
||||
uStrEqState = 3;
|
||||
return pCh;
|
||||
|
||||
}
|
||||
else
|
||||
{ //expres '=' and right
|
||||
uStrEqState = 3; //all meet
|
||||
return ++pCh;
|
||||
}
|
||||
}
|
||||
else if( uStrEqState == 0 )
|
||||
{ //expres left and '=' and right
|
||||
if( pStrEqTok != NULL )
|
||||
{
|
||||
*(pStrEqTok -1) = ' ';
|
||||
}
|
||||
pStrEqTok = p + 1;
|
||||
*p = CNULL;
|
||||
uStrEqState = 2;
|
||||
return pCh;
|
||||
}
|
||||
else
|
||||
{
|
||||
goto STREQTOK_CLEAN_UP;
|
||||
}
|
||||
}
|
||||
STREQTOK_CLEAN_UP:
|
||||
pStrEqTok = NULL;
|
||||
uStrEqState = 0;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
int main ( )
|
||||
{
|
||||
int i, ret = 0;
|
||||
IfAddr tIfAddr;
|
||||
IcmpSrv tIcmpSrv;
|
||||
char tmpStr[80];
|
||||
|
||||
ret = GetNetIfInfo ( &tIfAddr );
|
||||
|
||||
printf ( "Interface num :%d \n\n", ret );
|
||||
for ( i = 0; i < ret; i++ )
|
||||
{
|
||||
printf ( "If %d : state : %d ip : %s \n\n"
|
||||
, i, tIfAddr.tIfEntity[i].uIfState
|
||||
, inet_ntoa ( *((struct in_addr* )&tIfAddr.tIfEntity[i].dIfIP ))
|
||||
);
|
||||
}
|
||||
|
||||
#define STR(s) #s
|
||||
printf(STR(if(NOTSO(a)) return 0\n));
|
||||
|
||||
#define FPOS( type, field ) /*lint -e545 */ ( (u32) &(( type *) 0)-> field ) /*lint +e545 */
|
||||
|
||||
|
||||
#define FSIZ( type, field ) sizeof( ((type *) 0)->field )
|
||||
|
||||
printf("Pos : %ld \n" , FPOS(IfAddr ,uIfNum ) );
|
||||
printf("Size : %ld \n" , FSIZ(IfAddr ,uIfNum ) );
|
||||
printf("Pos : %ld \n" , FPOS(IfAddr ,tIfEntity ) );
|
||||
printf("Size : %ld \n" , FSIZ(IfAddr ,tIfEntity ) );
|
||||
printf("Pos : %ld \n" , FPOS(EIF ,dIfIP ) );
|
||||
printf("Size : %ld \n" , FSIZ(EIF ,dIfIP ) );
|
||||
printf("Pos : %ld \n" , FPOS(EIF ,uIfState ) );
|
||||
printf("Size : %ld \n" , FSIZ(EIF ,uIfState ) );
|
||||
printf("Pos : %ld \n" , FPOS(IcmpSrv ,nPackNumSend ) );
|
||||
printf("Size : %ld \n" , FSIZ(IcmpSrv ,nPackNumSend ) );
|
||||
printf("Pos : %ld \n" , FPOS(IcmpSrv ,aSendBuff ) );
|
||||
printf("Size : %ld \n" , FSIZ(IcmpSrv ,aSendBuff ) );
|
||||
|
||||
printf("Please input ip and port : ");
|
||||
|
||||
fgets( tmpStr, 80 ,stdin );
|
||||
|
||||
printf("%s\n", tmpStr);
|
||||
if( STR_CHECK_END(tmpStr , '\n' ) )
|
||||
{
|
||||
STR_CUT_LAST(tmpStr );
|
||||
}
|
||||
//StrTrimMoreSpace(tmpStr);
|
||||
//printf("trim space : \n%s\n" ,tmpStr );
|
||||
|
||||
{
|
||||
char *p = NULL;
|
||||
u8 uFlag = 0;
|
||||
|
||||
p = StrEqTok(tmpStr);
|
||||
printf( "Name: %-20s " , p);
|
||||
for( ; p = StrEqTok(NULL); )
|
||||
{
|
||||
uFlag = uFlag ? 0 : 1;
|
||||
if( uFlag )
|
||||
{
|
||||
printf( "Valu: %-20s \n" , p);
|
||||
}
|
||||
else
|
||||
{
|
||||
printf( "Name: %-20s " , p);
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("\n\n");
|
||||
PingInit( &tIcmpSrv , 56 );
|
||||
|
||||
ret = PingStart( &tIcmpSrv , "172.18.99.1" , NetCapPing );
|
||||
if( !ret )
|
||||
{
|
||||
printf("ping is processing\n");
|
||||
}
|
||||
|
||||
while(1)
|
||||
{
|
||||
PingTimer( &tIcmpSrv );
|
||||
sleep ( 1 );
|
||||
//每隔一秒发送一个ICMP报文
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
Reference in new issue
Block a user