Forum Ubuntu-it

Codice: Seleziona tutto

/* scrive il file al path f, nella scoket sockfd  */
int f_transfert_sock(char *f, int sockfd)
{
  FILE *fs;
  int szf, rszf, wr;
  char len[125];
  int buffer[SIZE_BUF];
  struct stat b;

  fs = fopen(f,"rb");
  if(fs==NULL) return 0;
  
  if(stat(f,&b)==-1) return 0;
  szf=b.st_size;

  snprintf(len,125,"%d",szf);
  wr = write(sockfd,len,125);
  if(wr<0) error("write");

  while(szf)
    {
      if(szf<SIZE_BUF)
	{
	  szf = fread(buffer,1,szf,fs);
	  wr = write(sockfd,buffer,szf);
	  if(wr!=szf) return 0;
	  szf = 0;
	}
      else
	{
	  rszf = fread(buffer,1,SIZE_BUF,fs);
	  wr = write(sockfd,buffer,rszf);
	  if(wr!=rszf) return 0;
	  szf-=rszf;
	}
    }
	fclose(fs);
        return 0; 
}

Codice: Seleziona tutto

/* legge dalla socket sockfd un file di grandezza sz e lo copia nel path del nuovo file f */
int f_recv_sock(char *f, int sockfd, long sz)
{
  FILE *fd;
  int szf, rszf, wr , w, ret, i;
  int buffer[SIZE_BUF];

  fd = fopen(f,"wb");
  if(fd==NULL) return -1;
 
  while(sz)
    {

	if(sz<SIZE_BUF)
	{
		w = read(sockfd, buffer, sz);
		ret = fwrite(buffer,1,w,fd);
		if(ret!=w) error("copia inconsistente");
		sz=0;
	}
	else{
      		wr = read(sockfd, buffer, SIZE_BUF);
		ret = fwrite(buffer, 1, wr, fd);
		if(ret!=wr) error("copia inconsistente");
		sz-=ret;
	}      
    }
	fclose(fd);
	printf("FILE RICEVUTO\n");
	return 0;
}