sendpacket.c

linux中的港湾客户段源程序

/*
这个部分是联创认证的特色所在,不论数据包的格式还是加密算法,与其他公司的标准都有很大不同
这也是编写此软件的难点所在,幸好我有很好的汇编语言基础，对破解技术有所了解。哈哈，我可不是什么 
linux高手，接触Linux只还不到一年，使用linux才一个学期,可不是，现在还为debian安装中文输入法而犯愁:(
24-09-2005 10:51
*/

#include "sendpacket.h"
//#include "global.h"
#include "md5.h"

/*void show(unsigned char *p,int n)
{
	int i = 0;
	for(i = 0;i<n;i++)
	{
		printf("%-2x ",*p);
		++p;
		if((i+1)%16==0) printf("\n");
	}
}*/

unsigned char StandardAddr[] = {'\x01','\x80','\xC2','\x00','\x00','\x03'};
	

int SendFindServerPacket(libnet_t *l)
{
   unsigned char broadPackage[0x40] = {        //港湾广播包，用于寻找服务器
           '\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x88','\x8e','\x01','\x01',
           '\x00','\x0e','\x20','\x14','\x01','\x00','\x04','\x04','\x00','\x01','\x07','\x06','\x00','\x00','\x00','\x00',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5'};
           
   extern unsigned char  m_localMAC[6];
   extern unsigned char m_ip[4];

   memcpy( broadPackage, StandardAddr, 6 );
   memcpy( broadPackage+6, m_localMAC, 6 );   //填充MAC地址
   memcpy( broadPackage+0x1c,m_ip,4);
   fputs(">> Searching for server...\n",stdout);

   //show(broadPackage,64);
   return (libnet_write_link(l,broadPackage, 0x40)==0x40)?0:-1;
}

int SendNamePacket(libnet_t *l, const u_char *pkt_data)
{
   static unsigned char ackPackage[0x40] = {        //港湾应答包，用户名
           '\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x88','\x8e','\x01','\x00',
           '\x00','\x0e','\x02','\x01','\x00','\x00','\x01','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5'};


   extern char *m_name;
   extern unsigned char  m_localMAC[6];
   int nameLen;
   nameLen=strlen(m_name);
   memcpy(ackPackage,StandardAddr,6);  //仍将组播的MAC地址填入组织回复的包
   memcpy(ackPackage+6,m_localMAC,6);  //将本机MAC地址填入组织回复的包
   ackPackage[0x12]=0x02;            //code,2代表应答
   ackPackage[0x13]=pkt_data[0x13];  //ID = 1

   *(short *)(ackPackage+0x10) = htons((short)(5+nameLen));//len
   *(short *)(ackPackage+0x14) = *(short *)(ackPackage+0x10);//len
   memcpy(ackPackage+0x17,m_name,nameLen); //填入用户名

   fputs(">> Sending user name...\n",stdout);
   //show(ackPackage,64);
   return (libnet_write_link(l,ackPackage, 0x40)==0x40)?0:-1;
}

int SendPasswordPacket(libnet_t *l,const u_char *pkt_data)
{
   static unsigned char ackPackage[0x40] = {        //港湾应答包，MD5
           '\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x88','\x8e','\x01','\x00',
           '\x00','\x0e','\x00','\x00','\x0e','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5'};

   extern char *m_password;
   extern unsigned char  m_localMAC[6];
   int passwordLen;

   passwordLen=strlen(m_password);

   memcpy(ackPackage,StandardAddr,6);
   memcpy(ackPackage+6,m_localMAC,6); //将本机MAC地址填入组织回复的包

   ackPackage[0x12] = 0x02;                //code,2代表应答
   ackPackage[0x13] = 0x01;                //pkt_data[\x13];        //id
   ackPackage[0x16] = 0x04; //type，即应答方式,HERE should alway be 4
   *(short *)(ackPackage+0x10) = htons((short)(6+passwordLen)); //len
   *(short *)(ackPackage+0x14) = *(short *)( ackPackage+0x10 );
   ackPackage[0x17] = 0x08;
   memcpy(ackPackage+0x18,m_password,passwordLen);

   fputs(">> Sending password... \n",stdout);
   //show(ackPackage,64);
   return (libnet_write_link(l,ackPackage, 0x40)==0x40)?0:-1;
}

int SendEchoPacket(libnet_t *l)
{	
	extern unsigned char m_localMAC[6];
	unsigned char MidPacket[0x40]={
           '\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x00','\x88','\x8e','\x01','\x0b',
           '\x00','\x00','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5',
           '\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5','\xa5'};
	memcpy(MidPacket,StandardAddr,6);
	memcpy(MidPacket+6,m_localMAC,6);
/*	memcpy(MidPacket+0x0c,"0x888e",2);
	memcpy(MidPacket+0x0e,"0x01",1);
	memcpy(MidPacket+0x0f,"0x0b",1);
	memcpy(MidPacket+0xa0,"0x0000",2);*/
	return (libnet_write_link(l,MidPacket,0x40)==0x40)?0:-1;
}
int  SendEndCertPacket(libnet_t *l)
{
   extern unsigned char  m_destMAC[6];
   extern unsigned char  m_localMAC[6];

   static unsigned char ExitPacket[0x40]={
	'\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x88', '\x8e', '\x01', '\x02',
	'\x00', '\x00', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5',
	'\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5',
	'\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5', '\xa5'};
   memcpy( ExitPacket, m_destMAC, 6 );
   memcpy( ExitPacket+6,m_localMAC, 6 );
   fputs(">> Logouting... \n",stdout);
   return (libnet_write_link(l,ExitPacket,0x40)==0x40)?0:-1;
}