www.pudn.com > TcpIpOn8051.rar > telnet.C

/*------------------------------------------------------------------------------ 
main.C 
 
Copyright 1995-1999 Keil Software, Inc. 
------------------------------------------------------------------------------*/ 
#include "public.h" 
#include "ether.h" 
#include "arp.h" 
#include "ip.h" 
#include "tcp.h" 
#include  
 
static WORD III; 
 
char clientcmd[30];                    // Pointer to command-line command  
BYTE telopts[] = 
{ 
    TEL_IAC, TEL_DO,    TEL_SGA,    // Do suppress go-ahead  
    TEL_IAC, TEL_WONT,  TEL_ECHO,   // Won't echo  
    TEL_IAC, TEL_WONT,  TEL_AUTH    // Won't authenticate  
}; 
 
extern mycomp xdata mypara; 
extern TCP_SOCK xdata tsock[nsocks]; 
extern get_current(); 
extern delay_ms(BYTE sec); 
extern initcpu(); 
 
//WORD server_action(TCP_SOCK *ts, CONN_STATE conn); 
WORD client_action(TCP_SOCK *ts, CONN_STATE conn); 
 
extern void Task_attemper(void); 
extern void ip_arpreq(ip destip); 
extern void icmp_send(netcard *netbuf,ip destip,BYTE type,BYTE icode,WORD ident,WORD seq,WORD len); 
extern void print(char str[]); 
extern BYTE tcp_open(TCP_SOCK *ts,ip destip, WORD destport); 
//extern WORD (*server_upcall)(TCP_SOCK *ts, CONN_STATE conn);// TCP server action  
//extern WORD (*client_upcall)(TCP_SOCK *ts, CONN_STATE conn);// TCP client action  
extern WORD buff_in(CBUFF *bp, BYTE *tdata, WORD len); 
extern WORD buff_out(CBUFF *bp, BYTE *tdata, WORD maxlen); 
//extern WORD buff_instr(CBUFF *bp, char *str); 
//extern WORD tcp_check(tcppacket *tcp,DWORD srcip,DWORD destip,WORD tlen); 
 
 
void ping(ip destip) 
{ 
  	netcard xdata netbuf;//缓冲区，注意：可能需要修改 
	print("pinging 202.118.19.174!\n\r"); 
	icmp_send(&netbuf,destip,8,0x00,0x0200,III,60); 
  	III++; 
} 
 
void main() 
{ 
//ip xdata destip,srcip; 
//WORD destport,tlen; 
//tcppacket tcp; 
WORD numnum; 
 
initcpu(); 
numnum=0; 
print("start!\n\r"); 
ip_arpreq(mypara.mygate); 
//server_upcall = server_action; 
//client_upcall = client_action; 
/* 
srcip=0xca7613ae; 
destip=0xca7613ad; 
tlen=0x0028-sizeof(ipheader); 
 
tcp.t.sport=1848;            // Source port  
tcp.t.dport=1024;            // Destination port  
tcp.t.seq=0x99d9f4bd;              // Sequence number  
tcp.t.ack=0x00f80400;              // Ack number  
tcp.t.hlen=0x05;             // TCP header len (num of bytes << 2)  
tcp.t.flags=0x18;            // Option flags  
tcp.t.window=0x4000;           // Flow control credit (num of bytes)  
tcp.t.check=0;            // Checksum  
tcp.t.urgent=0;           // Urgent data pointer  
 
tcp.t.sport=0x0740;            // Source port  
tcp.t.dport=0x4000;            // Destination port  
tcp.t.seq=0xf9d4fa4b;              // Sequence number  
tcp.t.ack=0x00000000;              // Ack number  
tcp.t.hlen=0x70;             // TCP header len (num of bytes << 2)  
tcp.t.flags=0x02;            // Option flags  
tcp.t.window=0x4000;           // Flow control credit (num of bytes)  
tcp.t.check=0x8776;            // Checksum  
tcp.t.urgent=0;           // Urgent data pointer  
tcp.tcpdata[0]=2; 
tcp.tcpdata[1]=4; 
tcp.tcpdata[2]=0x05; 
tcp.tcpdata[3]=0xb4; 
 
tlen=0x1c; 
numnum=tcp_check(&tcp,srcip,destip,tlen); 
 
destip=0xca7613ae; 
destport=1024; 
*/ 
//ping(destip); 
//delay_ms(10); 
//tcp_open(&tsock[0],destip,destport); 
 
while(1) 
	{ 
	numnum++; 
    Task_attemper(); 
 
	} 
} 
 
/* 
//server upcall 
WORD server_action(TCP_SOCK *ts, CONN_STATE conn) 
{ 
 
    WORD ok=1; 
    WORD port, len; 
    BYTE temps[30]; 
//    time_t t; 
//	temps[1]='\0'; 
    port = ts->locport;                    // Connection being opened  
    if (conn == TCP_OPEN) 
    { 
        ok = port==echoport || port==httpport || port==1024; 
        //if (port == echoport || port==1024)              // Echo server?  
            //ts->connflags = TPUSH;              // ..use PUSH flag  
//        else if (port == HTTPORT)               // HTTP server ?  
//        {                                       // ..load my page  
//            buff_in(&ts->txb, (BYTE *)MYPAGE, sizeof(MYPAGE)); 
//        } 
    } 
    else if (conn == TCP_CONN)              // Connected  
    { 
        //if (port==DAYPORT || port==HTTPORT)     // If daytime or HTTP  
        //    ok = 0;                             // ..close straight away  
    } 
    else if (conn == TCP_DATA)              // Received data  
    { 
        if (port == echoport || port==1024)                   // If Echo  
        {                                       // ..echo it back!  
            len=buff_out(&ts->rxbuf, temps, sizeof(temps)); 
			temps[1]='\0'; 
			if(len!=0) 
				print(&temps[0]); 
			//temps[0]=0x41; 
            buff_in(&ts->txbuf, &temps[0], 1); 
        } 
    } 
    return(ok); 
} 
*/ 
//client upcall 
 
WORD client_action(TCP_SOCK *ts, CONN_STATE conn) 
{ 
	char ret[]="\r\n"; 
    if (conn == TCP_OPEN) 
    { 
        if (ts->remport == telport || ts->remport == 1024)        // If login, send Telnet opts  
            buff_in(&ts->txbuf, telopts, sizeof(telopts)); 
        if (clientcmd) 
        { 
            buff_in(&ts->txbuf, clientcmd,sizeof(clientcmd));// Send command-line string  
            buff_in(&ts->txbuf, ret,sizeof(ret)); 
        } 
    } 
	 
    return(1); 
} 
 
/*EOF*/