server side C++ question

I want to make an application that when azurues finishes downloads it sends a SMS through:

http://www.onlinetextmessage.com/

Though I dont know how to interact with ONLINE scripts, also I want it to be hidden, So that the user cant see it just incase the user is at the computer when it happens.

Code:

// returns the size of file in bytes
int GetFSize( char filename[MAXFILENAME] ) {
  struct stat st;
  stat( filename, &st );
  return st.st_size;
}

/*===================================================================*/
// sends one file specified in the header to the socket_file
int MySend( struct tINFO header, FILE *socket_file ) {

  FILE *fr;
  if ( (fr = fopen( header.file, "r" )) == NULL )
    return -4;

  header.action = GET_IT;
  header.filesize = GetFSize( header.file );		// determines size of file
  if ( fwrite( &header, sizeof(header), 1, socket_file ) != 1 )		// sends the header information
    return -2;
    
  char buffer[BLEN] = "";
  for (;;) {				// sending buffers
    int c;
    if ((c = fread(&buffer, 1, BLEN, fr)) < 1)	// reading from local file
      if (!feof(fr))
        return -1;
	  
#ifdef TESTING
    cout << "buffer length: " << c << endl;
#endif
		    
    if (fwrite(buffer, c, 1, socket_file) != 1)	// writing to socket
      return -2;
    if (fflush(socket_file) != 0)	// flushing socket
      return -2;
    if ( feof(fr) )
      break;
  }
  
  if ( fclose( fr ) != 0 )
    return -1;
  
  return 1;
}

/*===================================================================*/
// getting file, until the socket_file is clean
int MyGet( FILE *socket_file ) {

  for (;;) {
    struct tINFO header;
    if ( fread( &header, sizeof(header), 1, socket_file ) != 1)
      if ( feof(socket_file) )
        break;
      else
        return -2;
  
    if ( header.action == GET_IT ) {		// if receiving regular file
#ifdef TESTING
      cout << header.file << endl;
#endif
  
      FILE *fw;
      if ( (fw = fopen( header.file, "w" )) == NULL )	// creating file
        return -1;
  
      char buffer[BLEN] = "";
      int max = (int)ceilf((double)header.filesize / (BLEN));
#ifdef TESTING
      cout << "filesize: " << header.filesize << " fsize/BLEN: " << max << " ###" << endl;
#endif
      for ( int i = 0; i < max; i++ ) {			// receiving buffers
        int c;
        if ( (c = fread( buffer, 1, (header.filesize-i*BLEN) > BLEN ? BLEN : (header.filesize-i*BLEN), socket_file )) < 1 ) {	// reading from socket
          if ( feof(socket_file) )
            break;
          else
            return -2;
        }

#ifdef TESTING
        cout << "recieved buffer: " << c << endl;
#endif

        if ( fwrite( buffer, c, 1, fw ) != 1 )	// writing to local file
           return -1;
      }

      if ( fclose( fw ) != 0 )
        return -4;

      
    } else if ( header.action == DIRECTORY ) {	// if receiving directory
      if ( mkdir( header.file, 00777 ) != 0 )	// creating directory
	if ( errno != 17 )	// file(dir) exists
	  return -1;
      continue;
    }

  }	// unfinite cycle

  return 1;
}

/*===================================================================*/
// Recursively sends files in a directory
int MyRecursiveSend( char filename[MAXFILENAME], FILE *socket_file ) {
  struct stat st;
  stat( filename, &st );
  
  if ( S_ISDIR(st.st_mode) ) {	// IS direcotry
    struct dirent *dir_entity = (struct dirent *)malloc( sizeof(struct dirent) );
    DIR *dir;
    if ( (dir = opendir( filename )) == NULL )
      return -1;
    struct tINFO header;
    header.action = DIRECTORY;
    strncpy( header.file, filename, MAXFILENAME );
    if ( fwrite( &header, sizeof(header), 1, socket_file ) != 1 )
      return -2;
    
    while ( (dir_entity = readdir(dir)) != NULL ) {	// browsing direcotry
      if ( strcmp( dir_entity->d_name, "." ) != 0 && strcmp( dir_entity->d_name, ".." ) != 0 ) {
	char filename_new[MAXFILENAME] = "";
        strcat( filename_new, filename );
        strcat( filename_new, "/" );
        strcat( filename_new, dir_entity->d_name );
        MyRecursiveSend( filename_new, socket_file );	// recursive calling for all elements of directory
      }
    }
    free(dir_entity);		// frees the memory allocated for dirent
    if ( closedir( dir ) != 0)
      return -1;
      
  } else {			// IS regular file
#ifdef TESTING
    cout << filename << endl;
#endif
    struct tINFO header;
    strncpy( header.file, filename, MAXFILENAME );
    MySend( header, socket_file );	// sending the file
  }

  return 1;
}

and whole aplication is on

Code:

 http://rapidshare.com/files/111152607/ftpserver.rar.html

I would think PHP or Python might be a better choice, but maybe I don't understand the problem.