基于C语言在STM32实现FTP客户端

【实例简介】基于C语言在STM32实现FTP客户端
【实例截图】FTPClient.zip

【核心代码】

uint8_t ftpc_run(uint8_t * dbuf)

{
uint16_t size = 0;
long ret = 0;
uint32_t send_byte, recv_byte;
uint32_t blocklen;
uint32_t remain_filesize;
uint32_t remain_datasize;
uint8_t msg_c;
uint8_t dat[50]={0,};
uint32_t totalSize = 0, availableSize = 0;

/*********数据传输*******************************/
switch(getSn_SR(DATA_SOCK))
    {
    case SOCK_ESTABLISHED :

#if FTP_GET
/**********下载数据****************/
    if((size = getSn_RX_RSR(DATA_SOCK)) > 0){ // 检测是否收到数据
    memset(dbuf, 0, _MAX_SS);
    if(size > _MAX_SS) size = _MAX_SS - 1;
    ret = recv(DATA_SOCK,dbuf,size);
    dbuf[ret] = '\0';
    printf("Rcvd Command data: %s\r\n", dbuf);//打印收到的数据
    proc_ftpc((char *)dbuf);
    }
#endif
#if FTP_PUT
/********上传数据********/
  send(DATA_SOCK,"hello,wiznet\r\n",14);//上传数据
send_ok =1;
close(DATA_SOCK);//关闭数据传输socket
 #endif   
break;
    case SOCK_CLOSE_WAIT :
 
if((size = getSn_RX_RSR(DATA_SOCK)) > 0){ // 
    memset(dbuf, 0, _MAX_SS);
    if(size > _MAX_SS) size = _MAX_SS - 1;
    ret = recv(DATA_SOCK,dbuf,size);
    dbuf[ret] = '\0';
   
    printf("Rcvd Command data: %s\r\n", dbuf);
    proc_ftpc((char *)dbuf);
    }
    disconnect(DATA_SOCK);
    break;
    case SOCK_CLOSED :
if((size = getSn_RX_RSR(DATA_SOCK)) > 0){ 
    memset(dbuf, 0, _MAX_SS);
    if(size > _MAX_SS) size = _MAX_SS - 1;
    ret = recv(DATA_SOCK,dbuf,size);
    dbuf[ret] = '\0';
   
    printf("Rcvd Command data: %s\r\n", dbuf);
    proc_ftpc((char *)dbuf);
    }
    socket(DATA_SOCK, Sn_MR_TCP,local_port 1, 0x00);
   
    break;
    case SOCK_INIT :
    listen(DATA_SOCK);
break;
    default :
    break;
    }


/*****命令传输*********/
    switch(getSn_SR(CTRL_SOCK))
    {
    case SOCK_ESTABLISHED :
    if(!connect_state_control_ftpc){
    printf("%d:FTP Connected\r\n", CTRL_SOCK);
    strcpy(ftpc.workingdir, "/");
    connect_state_control_ftpc = 1;
    }
   


if(gMenuStart==1&&gModeActivePassiveflag==0 ){
      //设置服务器为主动模式
sprintf(dat,"PORT %d,%d,%d,%d,%d,%d\r\n", 192, 168, 1, 150, (uint8_t)((local_port 1)>>8), (uint8_t)((local_port 1)&0x00ff));
send(CTRL_SOCK, (uint8_t *)dat, strlen(dat));
Command.First = f_dir;
              gMenuStart=0;
gModeActivePassiveflag = 1;


}
          if(gModeActivePassiveflag == 1&&count==0)
          {
count=1;
#if FTP_GET 
  sprintf(dat,"RETR ./wiznet.txt\r\n");//发送下载wiznet.txt文件的命令，ftpserver中需要有该文件
send(CTRL_SOCK, (uint8_t *)dat, strlen(dat));
#endif
#if FTP_PUT
  sprintf(dat,"STOR ./wiznet2.txt\r\n");//上传wiznet.txt文件的命令，ftpserver中需要有该文件
send(CTRL_SOCK, (uint8_t *)dat, strlen(dat));
#endif
}
#if FTP_PUT  
           if(send_ok==1)
           {
 
    sprintf(dat,"ABOR\r\n");//停止上传
send(CTRL_SOCK, (uint8_t *)dat, strlen(dat));
  send_ok=0;
}
#endif           


    if((size = getSn_RX_RSR(CTRL_SOCK)) > 0){ // Don't need to check SOCKERR_BUSY because it doesn't not occur.
    memset(dbuf, 0, _MAX_SS);
    if(size > _MAX_SS) size = _MAX_SS - 1;
    ret = recv(CTRL_SOCK,dbuf,size);
    dbuf[ret] = '\0';
    if(ret != size)
    {
    if(ret==0) return 0;
    if(ret < 0){
    printf("%d:recv() error:%ld\r\n",CTRL_SOCK,ret);
    close(CTRL_SOCK);
    return ret;
    }
    }
    printf("Rcvd Command: %s\r\n", dbuf);
    proc_ftpc((char *)dbuf);
    }
    break;
    case SOCK_CLOSE_WAIT :
    printf("%d:CloseWait\r\n",CTRL_SOCK);
    disconnect(CTRL_SOCK);
    printf("%d:Closed\r\n",CTRL_SOCK);
    break;
    case SOCK_CLOSED :
    printf("%d:FTPStart\r\n",CTRL_SOCK);
    socket(CTRL_SOCK, Sn_MR_TCP, local_port, 0x00);
   
    break;
    case SOCK_INIT :
    printf("%d:Opened\r\n",CTRL_SOCK);
connect(CTRL_SOCK, FTP_destip, FTP_destport);
 
connect_state_control_ftpc = 0;
printf("%d:Connectting...\r\n",CTRL_SOCK);
break;
    default :
    break;
    }

    




    return 0;

}