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        首頁 > 編程 > Java > 正文

        網絡上的數據報偵聽

        2019-09-06 23:33:16
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        來源:轉載
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                            #include <math.h>
        #include <stdio.h>
        #include <string.h>
        #include <Winsock2.h>
        #include <mstcpip.h>

        #define STATUS_FAILED 0xFFFF //定義異常出錯代碼
        #define MAX_PACK_LEN 65535 //接收的最大IP報文
        #define MAX_ADDR_LEN 16 //點分十進制地址的最大長度
        #define MAX_PROTO_TEXT_LEN 16 //子協議名稱(如"TCP")最大長度
        #define MAX_PROTO_NUM 12 //子協議數量
        #define MAX_HOSTNAME_LAN 255 //最大主機名長度
        #define CMD_PARAM_HELP true

        typedef struct _iphdr
        {
        unsigned char h_lenver; //4位首部長度+4位IP版本號
        unsigned char tos; //8位服務類型TOS
        unsigned short total_len; //16位總長度(字節)
        unsigned short ident; //16位標識
        unsigned short frag_and_flags; //3位標志位
        unsigned char ttl; //8位生存時間 TTL
        unsigned char proto; //8位協議 (TCP, UDP 或其他)
        unsigned short checksum; //16位IP首部校驗和
        unsigned int sourceIP; //32位源IP地址
        unsigned int destIP; //32位目的IP地址
        }IP_HEADER;

        typedef struct _tcphdr //定義TCP首部
        {
        USHORT th_sport; //16位源端口
        USHORT th_dport; //16位目的端口
        unsigned int th_seq; //32位序列號
        unsigned int th_ack; //32位確認號
        unsigned char th_lenres; //4位首部長度/6位保留字
        unsigned char th_flag; //6位標志位
        USHORT th_win; //16位窗口大小
        USHORT th_sum; //16位校驗和
        USHORT th_urp; //16位緊急數據偏移量
        }TCP_HEADER;

        typedef struct _udphdr //定義UDP首部
        {
        unsigned short uh_sport; //16位源端口
        unsigned short uh_dport; //16位目的端口
        unsigned short uh_len; //16位長度
        unsigned short uh_sum; //16位校驗和
        } UDP_HEADER;

        typedef struct _icmphdr //定義ICMP首部
        {
        BYTE i_type; //8位類型
        BYTE i_code; //8位代碼
        USHORT i_cksum; //16位校驗和
        USHORT i_id; //識別號(一般用進程號作為識別號)
        USHORT i_seq; //報文序列號
        ULONG timestamp; //時間戳
        }ICMP_HEADER;

        typedef struct _protomap //定義子協議映射表
        {
        int ProtoNum;
        char ProtoText[MAX_PROTO_TEXT_LEN];
        }PROTOMAP;

        PROTOMAP ProtoMap[MAX_PROTO_NUM]={ //為子協議映射表賦值
        { IPPROTO_IP , "IP " },
        { IPPROTO_ICMP , "ICMP" },
        { IPPROTO_IGMP , "IGMP" },
        { IPPROTO_GGP , "GGP " },
        { IPPROTO_TCP , "TCP " },
        { IPPROTO_PUP , "PUP " },
        { IPPROTO_UDP , "UDP " },
        { IPPROTO_IDP , "IDP " },
        { IPPROTO_ND , "NP " },
        { IPPROTO_RAW , "RAW " },
        { IPPROTO_MAX , "MAX " },
        { NULL , "" } };

        SOCKET SockRaw;
        char TcpFlag[6]={'F','S','R','P','A','U'}; //定義TCP標志位
        bool ParamTcp =false; // -t關注TCP 報文
        bool ParamUdp =false; // -u關注UDP 報文
        bool ParamIcmp =false; // -i關注ICMP報文
        bool ParamDecode=false; // -d對協議進行解碼
        char *strFromIpFilter=NULL; // 源IP地址過濾
        char *strDestIpFilter=NULL; // 目的地址過濾
        char *strSensitive=NULL; // 敏感字符串
        int iPortFilter=0; // 端口過濾
        int iProtocol, iTTL;
        char szProtocol[MAX_PROTO_TEXT_LEN];
        char szSourceIP[MAX_ADDR_LEN], szDestIP[MAX_ADDR_LEN];

        int DecodeIpPack(char *, int); //IP解包函數
        int DecodeTcpPack(char *, int); //TCP解包函數
        int DecodeUdpPack(char *, int); //UDP解包函數
        int DecodeIcmpPack(char *, int); //ICMP解包函數
        void CheckSockError(int, char*); //出錯處理函數
        char * CheckProtocol(int); //協議檢查
        void usage(void); //使用說明
        bool GetCmdLine(int, char **); //命令行參數處理



        void main(int argc, char ** argv)
        {
        int iErrorCode;
        char RecvBuf[MAX_PACK_LEN] = {0};
        usage();
        if(GetCmdLine(argc, argv)==CMD_PARAM_HELP) exit(0);
        //初始化SOCKET
        WSADATA wsaData;
        iErrorCode = WSAStartup(MAKEWORD(2,1),&wsaData);
        CheckSockError(iErrorCode, "WSAStartup");
        SockRaw = socket(AF_INET , SOCK_RAW , IPPROTO_IP);
        CheckSockError(SockRaw, "socket");
        //獲取本機IP地址
        char FAR name[MAX_HOSTNAME_LAN];
        iErrorCode = gethostname(name, MAX_HOSTNAME_LAN);
        CheckSockError(iErrorCode, "gethostname");
        struct hostent FAR * pHostent;
        pHostent = (struct hostent * )malloc(sizeof(struct hostent));
        pHostent = gethostbyname(name);
        SOCKADDR_IN sa;
        sa.sin_family = AF_INET;
        sa.sin_port = htons(6000);
        memcpy(&sa.sin_addr.S_un.S_addr, pHostent->h_addr_list[0], pHostent->h_length);
        free(pHostent);
        iErrorCode = bind(SockRaw, (PSOCKADDR)&sa, sizeof(sa));
        CheckSockError(iErrorCode, "bind");
        //設置SOCK_RAW為SIO_RCVALL,以便接收所有的IP包
        DWORD dwBufferLen[10] ;
        DWORD dwBufferInLen = 1 ;
        DWORD dwBytesReturned = 0 ;
        iErrorCode=WSAIoctl(SockRaw, SIO_RCVALL,&dwBufferInLen, sizeof(dwBufferInLen),
        &dwBufferLen, sizeof(dwBufferLen),&dwBytesReturned , NULL , NULL );
        CheckSockError(iErrorCode, "Ioctl");
        //偵聽IP報文
        while(1)
        {
        memset(RecvBuf, 0, sizeof(RecvBuf));
        iErrorCode = recv(SockRaw, RecvBuf, sizeof(RecvBuf), 0);
        CheckSockError(iErrorCode, "recv");
        iErrorCode = DecodeIpPack(RecvBuf, iErrorCode);
        CheckSockError(iErrorCode, "Decode");
        }
        }

        //IP解包程序
        int DecodeIpPack(char *buf, int iBufSize)
        {
        IP_HEADER *pIpheader;
        SOCKADDR_IN saSource, saDest;
        pIpheader = (IP_HEADER *)buf;
        //協議甄別
        iProtocol = pIpheader->proto;
        strncpy(szProtocol, CheckProtocol(iProtocol), MAX_PROTO_TEXT_LEN);
        if((iProtocol==IPPROTO_TCP) && (!ParamTcp)) return true;
        if((iProtocol==IPPROTO_UDP) && (!ParamUdp)) return true;
        if((iProtocol==IPPROTO_ICMP) && (!ParamIcmp)) return true;
        //源地址
        saSource.sin_addr.s_addr = pIpheader->sourceIP;
        strncpy(szSourceIP, inet_ntoa(saSource.sin_addr), MAX_ADDR_LEN);
        if (strFromIpFilter)
        if (strcmp(strFromIpFilter,szSourceIP)) return true;
        //目的地址
        saDest.sin_addr.s_addr = pIpheader->destIP;
        strncpy(szDestIP, inet_ntoa(saDest.sin_addr), MAX_ADDR_LEN);
        if (strDestIpFilter)
        if (strcmp(strDestIpFilter,szDestIP)) return true;
        iTTL = pIpheader->ttl;
        //計算IP首部的長度
        int iIphLen = sizeof(unsigned long) * (pIpheader->h_lenver & 0xf);
        //根據協議類型分別調用相應的函數
        switch(iProtocol)
        {
        case IPPROTO_TCP :DecodeTcpPack(buf+iIphLen, iBufSize);break;
        case IPPROTO_UDP :DecodeUdpPack(buf+iIphLen, iBufSize);break;
        case IPPROTO_ICMP :DecodeIcmpPack(buf+iIphLen, iBufSize);break;
        default :break;
        }
        //printf("");
        return true;
        }

        //協議識別程序
        char * CheckProtocol(int iProtocol)
        {
        for(int i=0; i<MAX_PROTO_NUM; i++)
        if(ProtoMap.ProtoNum==iProtocol)
        return ProtoMap.ProtoText;
        return "";
        }

        //TCP解包程序
        int DecodeTcpPack(char * TcpBuf, int iBufSize)
        {
        TCP_HEADER * pTcpHeader;
        int i;
        int iSourcePort,iDestPort;

        pTcpHeader = (TCP_HEADER * )TcpBuf;
        //計算TCP首部長度
        int TcpHeaderLen = pTcpHeader->th_lenres>>4;
        TcpHeaderLen *= sizeof(unsigned long);
        char * TcpData=TcpBuf+TcpHeaderLen;
        //如果過濾敏感字符串則判斷是否包含
        if (strSensitive)
        if ((strstr(TcpData, strSensitive))==NULL) return true;
        //對端口進行過濾
        iSourcePort = ntohs(pTcpHeader->th_sport);
        iDestPort = ntohs(pTcpHeader->th_dport);
        if ((iPortFilter) && (iSourcePort!=iPortFilter) && (iDestPort!=iPortFilter))
        return true;
        //輸出
        printf("%s ", szProtocol);
        printf("%15s:%5d ->%15s:%5d ", szSourceIP, iSourcePort, szDestIP, iDestPort);
        printf("TTL=%3d ", iTTL);
        //判斷TCP標志位
        unsigned char FlagMask = 1;
        for( i=0; i<6; i++ )
        {
        if((pTcpHeader->th_flag) & FlagMask) printf("%c",TcpFlag);
        else printf("-");
        FlagMask=FlagMask<<1;
        }
        printf(" bytes=%4d", iBufSize);
        printf("");
        //對于長度大于40字節的包進行數據分析(IP_HEADER+TCP_HEADER=40)
        if ((ParamDecode) && (iBufSize>40))
        {
        //分析TCP數據段
        if ((!strSensitive) || (strstr(TcpData,strSensitive)))
        {
        printf(" [DATA]");
        printf("%s",TcpData);
        printf(" [DATA END]");
        }
        }
        return true;
        }


        //UDP解包程序
        int DecodeUdpPack(char * UdpBuf, int iBufSize)
        {
        UDP_HEADER *pUdpHeader;
        pUdpHeader = (UDP_HEADER * )UdpBuf;
        int iSourcePort = ntohs(pUdpHeader->uh_sport);
        int iDestPort = ntohs(pUdpHeader->uh_dport);
        //對端口進行過濾
        if(iPortFilter)
        if ((iSourcePort!=iPortFilter) && (iDestPort!=iPortFilter))
        return true;
        printf("%s ", szProtocol);
        printf("%15s:%5d ->%15s:%5d ", szSourceIP, iSourcePort, szDestIP, iDestPort);
        printf("TTL=%3d ", iTTL);
        printf("Len=%4d ", ntohs(pUdpHeader->uh_len));
        printf("bytes=%4d", iBufSize);
        printf("");
        //對于長度大于28字節的包進行數據分析(IP_HEADER+UDP_HEADER>28)
        if ((ParamDecode) && (iBufSize>28))
        {
        printf(" [DATA]");
        //UDP首部長度為8
        char * UdpData=UdpBuf+8;
        //分析UDP數據段
        for(unsigned int i=0;i<(iBufSize-sizeof(UDP_HEADER));i++)
        {
        if (!(i%8)) printf("");
        if ( (UdpData>33) && (UdpData<122) )
        printf("%3c [%3x]", UdpData, UdpData);
        else printf(" [%3x]", abs(UdpData));
        }
        printf(" [DATA END]");
        }
        return true;
        }

        //ICMP解包程序
        int DecodeIcmpPack(char * IcmpBuf, int iBufSize)
        {
        ICMP_HEADER * pIcmpHeader;
        pIcmpHeader = (ICMP_HEADER * )IcmpBuf;
        int iIcmpType = pIcmpHeader->i_type;
        int iIcmpCode = pIcmpHeader->i_code;
        //對類型進行過濾
        if ((iPortFilter) && (iIcmpType!=iPortFilter)) return true;
        printf("%s ", szProtocol);
        //printf("%15s Type%d ->%15s Code%d ", szSourceIP, iIcmpType, szDestIP, iIcmpCode);
        printf("%15s ->%15s ", szSourceIP, szDestIP);
        printf("TTL=%3d ", iTTL);
        printf("Type%2d,%d ",iIcmpType,iIcmpCode);
        printf("bytes=%4d", iBufSize);
        printf("");
        //對于包含數據段的包進行數據分析
        if ((ParamDecode) && (iBufSize>28))
        {
        char * IcmpData=IcmpBuf+4;
        //分析ICMP數據段
        printf(" [DATA]");
        for(unsigned int i=0;i<(iBufSize-sizeof(ICMP_HEADER));i++)
        {
        if (!(i%8)) printf("");
        if ( (IcmpData>33) && (IcmpData<122) )
        printf("%3c [%3x]", IcmpData, IcmpData);
        else printf(" [%3x]", abs(IcmpData));
        }
        printf(" [DATA END]");
        }
        return true;
        }

        //命令行參數處理
        bool GetCmdLine(int argc, char ** argv)
        {
        if (argc<2) return CMD_PARAM_HELP;
        for(int i=1;i<argc;i++)
        {
        if(argv[0]!='/') return CMD_PARAM_HELP;
        else switch (argv[1])
        {
        case 't':
        case 'T': ParamTcp=true; break;
        case 'u':
        case 'U': ParamUdp=true; break;
        case 'i':
        case 'I': ParamIcmp=true; break;
        case 'p':
        case 'P': ParamDecode=true; break;
        case 'f':
        case 'F':
        {
        strFromIpFilter=(char*)malloc(16*sizeof(char));
        memset(strFromIpFilter,0,16*sizeof(char));
        strcpy(strFromIpFilter,argv+3);
        break;
        }
        case 'd':
        case 'D':
        {
        strDestIpFilter=(char*)malloc(16*sizeof(char));
        memset(strDestIpFilter,0,16*sizeof(char));
        strcpy(strDestIpFilter,argv+3);
        break;
        }
        case 's':
        case 'S':
        {
        strSensitive=(char*)malloc(255*sizeof(char));
        memset(strSensitive,0,255*sizeof(char));
        strcpy(strSensitive,argv+3);
        break;
        }
        case 'o':
        case 'O':
        {
        iPortFilter=atoi(argv+3);
        break;
        }
        }
        }
        printf("Will Sniffer");
        if(ParamTcp) printf(" TCP");
        if(ParamUdp) printf(" UDP");
        if(ParamIcmp) printf(" ICMP");
        if(strFromIpFilter) printf(" FromIp:%s",strFromIpFilter);
        if(strDestIpFilter) printf(" DestIp:%s",strDestIpFilter);
        if(ParamDecode) printf(" DECODE ON");
        if(strSensitive) printf(" Sensitive String:'%s'",strSensitive);
        printf("CTRL+C to quitStart:");
        return (!CMD_PARAM_HELP);
        }

        //使用說明
        void usage(void)
        {
        printf("IPSpy");
        printf("USAGE:");
        printf("/t Output TCP Packets");
        printf("/u Output UDP Packets");
        printf("/i Output ICMP Packets");
        printf("/p Decode Packets (default OFF)");
        printf("/f: fromIP Output Packets FromIp=fromIP (default ALL)");
        printf("/d: destIP Output Packets DestIp=destIP (default ALL)");
        printf("/s: string Output Packets Include sensitive String(TCP only)");
        printf("/o: port Output Packets from or to the port(ICMP is TYPE)");
        printf("Example:");
        printf("GUNiffer.exe /d>GUNiffer.log");
        printf("GUNiffer.exe /t /u /f:192.168.15.231");
        printf("GUNiffer.exe /t /p /s:PASS");
        }

        //SOCK錯誤處理程序
        void CheckSockError(int iErrorCode, char *pErrorMsg)
        {
        if(iErrorCode==SOCKET_ERROR)
        {
        printf("%s Error:%d", pErrorMsg, GetLastError());
        closesocket(SockRaw);
        exit(0);
        }

        }
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