Sender SK

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <nb30.h>
#define LANA 4

int tryb, nazwa;

NCB block;
int NCBNUM;
int LSN;
int err;
UCHAR callname[16];
UCHAR name[16];
UCHAR receive_buffer[512];
UCHAR send_buffer[512];


int Reset(){
memset(&block,0,sizeof(block));
block.ncb_command = NCBRESET;
block.ncb_lana_num = 4;
Netbios(&block);
return block.ncb_retcode;
}

int AddName(UCHAR *name){
memset(&block,0,sizeof(block));
block.ncb_command = NCBADDNAME;
block.ncb_lana_num = LANA;
strncpy(block.ncb_name,name,strlen(name));
Netbios(&block);
NCBNUM = block.ncb_num;
return block.ncb_retcode;
}

int DelName(UCHAR *name){
memset(&block,0,sizeof(block));
block.ncb_command = NCBDELNAME;
block.ncb_lana_num = LANA;
strncpy(block.ncb_name, name, strlen(name));
Netbios(&block);
return block.ncb_retcode;
}

int Receive(){
memset(&block,0,sizeof(block));
block.ncb_command = NCBRECV;
block.ncb_lsn = LSN;
block.ncb_lana_num = LANA;
block.ncb_num = NCBNUM;
block.ncb_post = 0;
block.ncb_buffer = receive_buffer;
block.ncb_length = sizeof(receive_buffer);
Netbios(&block);
printf("Odebrany tekst od %d: %s\n", block.ncb_lsn, receive_buffer );
return block.ncb_retcode;
}

int Send(UCHAR *send_buffer){
memset(&block,0,sizeof(block));
block.ncb_command = NCBSEND;
block.ncb_lsn = LSN;
block.ncb_lana_num = LANA;
block.ncb_post = NULL;
block.ncb_buffer = send_buffer;
block.ncb_length = strlen(send_buffer);
Netbios(&block);
return block.ncb_retcode;
}

int Call(UCHAR callname[16]){
memset(&block,0,sizeof(block));
block.ncb_command = NCBCALL;
block.ncb_lana_num = LANA;
strncpy(block.ncb_callname,callname,strlen(callname));
block.ncb_sto = 10;
block.ncb_rto = 10;
strncpy(block.ncb_name,name,strlen(name));
Netbios(&block);
LSN = block.ncb_lsn;
return block.ncb_retcode;
}


int Listen(UCHAR callname[16]){
memset(&block,0,sizeof(block));
block.ncb_command = NCBLISTEN;
block.ncb_lana_num = LANA;
strncpy(block.ncb_callname,callname,strlen(callname));
strncpy(block.ncb_name,name,strlen(name));
block.ncb_sto = 0;
block.ncb_rto = 0;
Netbios(&block);
LSN = block.ncb_lsn;
return block.ncb_retcode;
}

int HangUp(){
memset(&block,0,sizeof(block));
block.ncb_command = NCBHANGUP;
block.ncb_lana_num = LANA;
block.ncb_lsn = LSN;
Netbios(&block);
return block.ncb_retcode;
}

int main(void){
err = Reset();
if(err != NRC_GOODRET){
    printf("Wystapil blad %x\n",err);
    system("pause");
    exit(err);
}
printf("Podaj nazwe dla wezla: ");
scanf("%s",name);

err = AddName(name);
if(err != NRC_GOODRET){
    printf("Wystapil blad %x\n",err);
    system("pause");
    exit(err);
}
printf("Podaj nazwe dla wezla, z ktorym chcesz sie polaczyc: ");
scanf("%s",callname);

err = Call(callname);
if(err != NRC_GOODRET){
    printf("Wystapil blad %x\n",err);
    system("pause");
    exit(err);
}

printf("\nNawiazano polaczenie\n");

printf("Podaj wiadomosc do wyslania: ");
scanf("%s",send_buffer);
err = Send(send_buffer);
if(err != NRC_GOODRET){
    printf("Wystapil blad %x\n",err);
    system("pause");
    exit(err);
}
system("pause");
err = DelName(name);
if(err != NRC_GOODRET){
    printf("Wystapil blad %x\n",err);
    system("pause");
    exit(err);
}
}