Packet开发范例.doc

第一个程序：Testapp 这是一个非常简单的捕获程序，用来测试packet.dll。它是一个控制台应用程序，执行时，testapp给用户选择一个在本机器上安装好的适配器，然后它就可以从指定的网络适配器上面捕获包知道某个键按下，同时把每个包的内容打印在屏幕上。 00001 /*00002 * Copyright (c) 1999 - 200200003 * Politecnico di Torino. All rights reserved.00004 *00005 * Redistribution and use in source and binary forms, with or without00006 * modification, are permitted provided that: (1) source code distributions00007 * retain the above copyright notice and this paragraph in its entirety, (2)00008 * distributions including binary code include the above copyright notice and00009 * this paragraph in its entirety in the documentation or other materials00010 * provided with the distribution, and (3) all advertising materials mentioning00011 * features or use of this software display the following acknowledgement:00012 * This product includes software developed by the Politecnico00013 * di Torino, and its contributors. Neither the name of00014 * the University nor the names of its contributors may be used to endorse00015 * or promote products derived from this software without specific prior00016 * written permission.00017 * THIS SOFTWARE IS PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED00018 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF00019 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.00020 */00021 00022 #include 00023 #include 00024 00025 00026 #include .Includepacket32.h00027 #include .Includentddndis.h00028 00029 #define Max_Num_Adapter 1000030 00031 / Prototypes00032 00033 void PrintPackets(LPPACKET lpPacket);00034 00035 char AdapterListMax_Num_Adapter1024;00036 00037 int main()00038 00039 00040 /define a pointer to an ADAPTER structure00041 00042 LPADAPTER lpAdapter = 0;00043 00044 /define a pointer to a PACKET structure00045 00046 LPPACKET lpPacket;00047 00048 int i;00049 DWORD dwErrorCode;00050 00051 DWORD dwVersion;00052 DWORD dwWindowsMajorVersion;00053 00054 /unicode strings (winnt)00055 WCHAR AdapterName8192; / string that contains a list of the network adapters00056 WCHAR *temp,*temp1;00057 00058 /ascii strings (win95)00059 char AdapterNamea8192; / string that contains a list of the network adapters00060 char *tempa,*temp1a;00061 00062 00063 int AdapterNum=0,Open;00064 ULONG AdapterLength;00065 00066 char buffer256000; / buffer to hold the data coming from the driver00067 00068 struct bpf_stat stat;00069 00070 /00071 / Obtain the name of the adapters installed on this machine00072 /00073 printf(Packet.dll test application. Library version:%sn, PacketGetVersion();00074 00075 printf(Adapters installed:n);00076 i=0; 00077 00078 / the data returned by PacketGetAdapterNames is different in Win95 and in WinNT.00079 / We have to check the os on which we are running00080 dwVersion=GetVersion();00081 dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion);00082 if (!(dwVersion = 0x80000000 & dwWindowsMajorVersion = 4)00083 / Windows NT00084 AdapterLength = sizeof(AdapterName);00085 00086 if(PacketGetAdapterNames(AdapterName,&AdapterLength)=FALSE)00087 printf(Unable to retrieve the list of the adapters!n);00088 return -1;00089 00090 temp=AdapterName;00091 temp1=AdapterName;00092 while (*temp!=0)|(*(temp-1)!=0)00093 00094 if (*temp=0) 00095 00096 memcpy(AdapterListi,temp1,(temp-temp1)*2);00097 temp1=temp+1;00098 i+;00099 00100 00101 temp+;00102 00103 00104 AdapterNum=i;00105 for (i=0;iAdapterNum;i+)00106 wprintf(Ln%d- %sn,i+1,AdapterListi);00107 printf(n);00108 00109 00110 00111 else /windows 9500112 00113 AdapterLength = sizeof(AdapterNamea);00114 00115 if(PacketGetAdapterNames(AdapterNamea,&AdapterLength)=FALSE)00116 printf(Unable to retrieve the list of the adapters!n);00117 return -1;00118 00119 tempa=AdapterNamea;00120 temp1a=AdapterNamea;00121 00122 while (*tempa!=0)|(*(tempa-1)!=0)00123 00124 if (*tempa=0) 00125 00126 memcpy(AdapterListi,temp1a,tempa-temp1a);00127 temp1a=tempa+1;00128 i+;00129 00130 tempa+;00131 00132 00133 AdapterNum=i;00134 for (i=0;iAdapterNum) printf(nThe number must be smaller than %d,AdapterNum); 00145 while (OpenAdapterNum);00146 00147 00148 00149 00150 lpAdapter = PacketOpenAdapter(AdapterListOpen-1);00151 00152 if (!lpAdapter | (lpAdapter-hFile = INVALID_HANDLE_VALUE)00153 00154 dwErrorCode=GetLastError();00155 printf(Unable to open the adapter, Error Code : %lxn,dwErrorCode); 00156 00157 return -1;00158 00159 00160 / set the network adapter in promiscuous mode00161 00162 if(PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_PROMISCUOUS)=FALSE)00163 printf(Warning: unable to set promiscuous mode!n);00164 00165 00166 / set a 512K buffer in the driver00167 if(PacketSetBuff(lpAdapter,512000)=FALSE)00168 printf(Unable to set the kernel buffer!n);00169 return -1;00170 00171 00172 / set a 1 second read timeout00173 if(PacketSetReadTimeout(lpAdapter,1000)=FALSE)00174 printf(Warning: unable to set the read tiemout!n);00175 00176 00177 /allocate and initialize a packet structure that will be used to00178 /receive the packets.00179 if(lpPacket = PacketAllocatePacket()=NULL)00180 printf(nError: failed to allocate the LPPACKET structure.);00181 return (-1);00182 00183 PacketInitPacket(lpPacket,(char*)buffer,256000);00184 00185 /main capture loop00186 while(!kbhit()00187 00188 / capture the packets00189 if(PacketReceivePacket(lpAdapter,lpPacket,TRUE)=FALSE)00190 printf(Error: PacketReceivePacket failed);00191 return (-1);00192 00193 00194 PrintPackets(lpPacket);00195 00196 00197 00198 /print the capture statistics00199 if(PacketGetStats(lpAdapter,&stat)=FALSE)00200 printf(Warning: unable to get stats from the kernel!n);00201 00202 else00203 printf(nn%d packets received.n%d Packets lost,stat.bs_recv,stat.bs_drop);00204 00205 PacketFreePacket(lpPacket);00206 00207 / close the adapter and exit00208 00209 PacketCloseAdapter(lpAdapter);00210 return (0);00211 00212 00213 / this function prints the content of a block of packets received from the driver00214 00215 void PrintPackets(LPPACKET lpPacket)00216 00217 00218 ULONG i, j, ulLines, ulen, ulBytesReceived;00219 char *pChar, *pLine, *base;00220 char *buf;00221 u_int off=0;00222 u_int tlen,tlen1;00223 struct bpf_hdr *hdr;00224 00225 ulBytesReceived = lpPacket-ulBytesReceived;00226 00227 00228 buf = lpPacket-Buffer;0