main.c

用c写的ftp客户端源代码,可以在UNIX,Windows下编译通过,学习的好代码!

/* dftp: FTP client example
 * Copyright (c) 1996 by Donald C. Asonye
 * Email: [e-mail]
 *
 * main.c.
 *
 * This and other files are hereby released	to the public for 
 * educational purposes.  You may redistribute this and other files
 * or routines as long as you are not compensated for it, and as 
 * long as this notice is included with it.  You may not use the 
 * released source codes in anyway commercial without permission.
 *
 * It'd be nice if you share your modifications with me and everyone
 * else.  I encourage you to make the code better as I am very busy.
 *
 * Share your knowledge :)
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include "enums.h"
#include "extfuncs.h"
#if ( defined(_WIN32) || defined(WIN32) )
#include <windows.h>
#include <wincon.h>
#include <conio.h> 
#endif


extern int ReadCommand, 
	   Connected;


/*
 * interact
 * this is the main loop of the program.  it checks on keyboard and socket
 * for input.
 */
void Interact()
{
int done=0;

char command[1024];
printf("\nftp>");
while(!done) {
 if( ReadCommand ) {
     printf("ftp>");
     fflush(stdout);
 }
 if( !CheckFds(command) )
   continue;
 switch(CheckCommand(command) ) {

 case PWD:
		DoPWD();
      break;
 case RHELP:
      DoRhelp(command);
      break;
 case HELP:
      help(command);
      break;
 case GET:
      DoGet(command);
      break;
 case PUT:
      DoPut(command);
      break;
 case BINARY:
      DoBinary();
      break;
 case ASCII:
      DoAscii();
      break;
 case CLOSE:
	 DoClose();
	 break;
 case OPEN:
	 DoOpen(command);
	 break;
 case CD:
	DoCD(command);
  break;
 case LS:
	DoList(command);
	break;
 case LLS:
	DoLLS(command);
	break;
 case LCD:
	DoLCD(command);
	break;
 case USER:
	DoLogin(command);
	break;
 case SHELL:
	DoShellCommand(command);
	break;
 case QUIT:
	 done = 1;
	 if( Connected )
	     DoClose();
	 break;
 default:
	if(command[0] == 0 ) ;
	else
	    printf("Invalid command: %s\n",command);

  }

 }
}

/*
 * main 
 * program's main function
 */
void main(int argc, char *argv[])
{
	void (*OldSig)(int);

   /*
    * ignore ctrl-c
    */
   OldSig=signal(SIGINT,SIG_IGN);

   printf("dftp: ftp client example\r\n");
   printf("Copyright 1996 (c) Donald C. Asonye\r\n");
   printf("Email: [e-mail]\r\n");

#if (defined(WIN32) || defined(_WIN32) )
   /*
    * initialize winsock. 
    */
   if( InitWinsock() ) {
	   if(argc > 1)
		   DoOpen(argv[1]);
	   Interact();
   }
   else {
	   printf("Press any key to exit");
	   if( !getch() )
		   getch();
	   printf("\r\n");
   }
   
   /*
    * cleanup winsock
    */
   CleanUp();
#else
   if(argc > 1)
     DoOpen(argv[1]);
   Interact(); 
#endif
	(void)signal(SIGINT,OldSig);
}