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  2. 首頁 > 編程 > Java > 正文

    網絡上的數據報偵聽

    2019-09-06 23:33:16
    字體:
    來源:轉載
    供稿:網友

                        #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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    1. <dd id="kkln5"><pre id="kkln5"></pre></dd>