transfer.c

一个linux下的ftp程序。它是使用文件传输协议的一系列程序的集合。

/*****************************************************************************/
/*  transfer.c - functions to handle transfering files                       */
/*  Copyright (C) 1998-2003 Brian Masney <[e-mail]>                  */
/*                                                                           */
/*  This program is free software; you can redistribute it and/or modify     */
/*  it under the terms of the GNU General Public License as published by     */
/*  the Free Software Foundation; either version 2 of the License, or        */
/*  (at your option) any later version.                                      */
/*                                                                           */
/*  This program is distributed in the hope that it will be useful,          */
/*  but WITHOUT ANY WARRANTY; without even the implied warranty of           */
/*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            */
/*  GNU General Public License for more details.                             */
/*                                                                           */
/*  You should have received a copy of the GNU General Public License        */
/*  along with this program; if not, write to the Free Software              */
/*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                */
/*****************************************************************************/

#include "gftp-gtk.h"
static const char cvsid[] = "$Id: transfer.c,v 1.76 2005/01/25 02:34:19 masneyb Exp $";

static int num_transfers_in_progress = 0;

int
ftp_list_files (gftp_window_data * wdata)
{
  gftpui_callback_data * cdata;

  gtk_label_set (GTK_LABEL (wdata->hoststxt), _("Receiving file names..."));

  cdata = g_malloc0 (sizeof (*cdata));
  cdata->request = wdata->request;
  cdata->uidata = wdata;
  cdata->run_function = gftpui_common_run_ls;
  cdata->dont_refresh = 1;

  gftpui_common_run_callback_function (cdata);

  wdata->files = cdata->files;
  g_free (cdata);
  
  if (wdata->files == NULL || !GFTP_IS_CONNECTED (wdata->request))
    {
      gftpui_disconnect (wdata);
      return (0);
    }

  wdata->sorted = 0;
  sortrows (GTK_CLIST (wdata->listbox), -1, (gpointer) wdata);

  if (IS_NONE_SELECTED (wdata))
    gtk_clist_select_row (GTK_CLIST (wdata->listbox), 0, 0);

  return (1);
}


int
ftp_connect (gftp_window_data * wdata, gftp_request * request, int getdir)
{
  if (wdata->request == request)
    gtk_label_set (GTK_LABEL (wdata->hoststxt), _("Connecting..."));

  return (gftpui_common_cmd_open (wdata, request, NULL, NULL, NULL));
}


void 
get_files (gpointer data)
{
  transfer_window_files (&window2, &window1);
}


void
put_files (gpointer data)
{
  transfer_window_files (&window1, &window2);
}


void
transfer_window_files (gftp_window_data * fromwdata, gftp_window_data * towdata)
{
  gftp_file * tempfle, * newfle;
  GList * templist, * filelist;
  gftp_transfer * transfer;
  int num, ret, disconnect;

  if (!check_status (_("Transfer Files"), fromwdata, 1, 0, 1,
       towdata->request->put_file != NULL && fromwdata->request->get_file != NULL))
    return;

  if (!GFTP_IS_CONNECTED (fromwdata->request) || 
      !GFTP_IS_CONNECTED (towdata->request))
    {
      ftp_log (gftp_logging_error, NULL,
               _("Retrieve Files: Not connected to a remote site\n"));
      return;
    }

  if (check_reconnect (fromwdata) < 0 || check_reconnect (towdata) < 0)
    return;

  transfer = g_malloc0 (sizeof (*transfer));
  transfer->fromreq = gftp_copy_request (fromwdata->request);
  transfer->toreq = gftp_copy_request (towdata->request);
  transfer->fromwdata = fromwdata;
  transfer->towdata = towdata;

  num = 0;
  templist = gftp_gtk_get_list_selection (fromwdata);
  filelist = fromwdata->files;
  while (templist != NULL)
    {
      templist = get_next_selection (templist, &filelist, &num);
      tempfle = filelist->data;
      if (strcmp (tempfle->file, "..") != 0)
        {
          newfle = copy_fdata (tempfle);
          transfer->files = g_list_append (transfer->files, newfle);
        }
    }

  if (transfer->files != NULL)
    {
      gftp_swap_socks (transfer->fromreq, fromwdata->request);
      gftp_swap_socks (transfer->toreq, towdata->request);

      ret = gftp_gtk_get_subdirs (transfer, &fromwdata->tid);
      if (ret < 0)
        disconnect = 1;
      else
        disconnect = 0;

      if (!GFTP_IS_CONNECTED (transfer->fromreq))
        {
          gftpui_disconnect (fromwdata);
          disconnect = 1;
        } 

      if (!GFTP_IS_CONNECTED (transfer->toreq))
        {
          gftpui_disconnect (towdata);
          disconnect = 1;
        } 

      if (disconnect)
        {
          free_tdata (transfer);
          return;
        }

      gftp_swap_socks (fromwdata->request, transfer->fromreq);
      gftp_swap_socks (towdata->request, transfer->toreq);
    }

  if (transfer->files != NULL)
    {
      gftpui_common_add_file_transfer (transfer->fromreq, transfer->toreq, 
                                       transfer->fromwdata, transfer->towdata, 
                                       transfer->files);
      g_free (transfer);
    }
  else
    free_tdata (transfer);
}


static int
gftpui_gtk_tdata_connect (gftpui_callback_data * cdata)
{
  gftp_transfer * tdata;
  int ret;

  tdata = cdata->user_data;

  if (tdata->fromreq != NULL)
    {
      ret = gftp_connect (tdata->fromreq);
      if (ret < 0)
        return (ret);
    }

  if (tdata->toreq != NULL)
    {
      ret = gftp_connect (tdata->toreq);
      if (ret < 0)
        return (ret);
    }

  return (0);
}


static void
gftpui_gtk_tdata_disconnect (gftpui_callback_data * cdata)
{
  gftp_transfer * tdata;

  tdata = cdata->user_data;

  if (tdata->fromreq != NULL)
    gftp_disconnect (tdata->fromreq);

  if (tdata->toreq != NULL)
    gftp_disconnect (tdata->toreq);

  cdata->request->datafd = -1;
}


static int
_gftp_getdir_thread (gftpui_callback_data * cdata)
{
  return (gftp_get_all_subdirs (cdata->user_data, NULL));
}


int
gftp_gtk_get_subdirs (gftp_transfer * transfer, pthread_t *tid)
{
  gftpui_callback_data * cdata; 
  long numfiles, numdirs;
  guint timeout_num;
  int ret;

  cdata = g_malloc0 (sizeof (*cdata));
  cdata->user_data = transfer;
  cdata->uidata = transfer->fromwdata;
  cdata->request = ((gftp_window_data *) transfer->fromwdata)->request;
  cdata->run_function = _gftp_getdir_thread;
  cdata->connect_function = gftpui_gtk_tdata_connect;
  cdata->disconnect_function = gftpui_gtk_tdata_disconnect;
  cdata->dont_check_connection = 1;
  cdata->dont_refresh = 1;

  timeout_num = gtk_timeout_add (100, progress_timeout, transfer);
  ret = gftpui_common_run_callback_function (cdata);
  gtk_timeout_remove (timeout_num);

  numfiles = transfer->numfiles;
  numdirs = transfer->numdirs;
  transfer->numfiles = transfer->numdirs = -1; 
  update_directory_download_progress (transfer);
  transfer->numfiles = numfiles;
  transfer->numdirs = numdirs;

  g_free (cdata);

  return (ret);
}


static void
remove_file (char *filename)
{
  if (unlink (filename) == 0)
    ftp_log (gftp_logging_misc, NULL, _("Successfully removed %s\n"),
             filename);
  else
    ftp_log (gftp_logging_error, NULL,
             _("Error: Could not remove file %s: %s\n"), filename,
             g_strerror (errno));
}


static void
free_edit_data (gftp_viewedit_data * ve_proc)
{
  int i;

  if (ve_proc->torequest)
    gftp_request_destroy (ve_proc->torequest, 1);
  if (ve_proc->filename)
    g_free (ve_proc->filename);
  if (ve_proc->remote_filename)
    g_free (ve_proc->remote_filename);
  for (i = 0; ve_proc->argv[i] != NULL; i++)
    g_free (ve_proc->argv[i]);
  g_free (ve_proc->argv);
  g_free (ve_proc);
}


static void
dont_upload (gftp_viewedit_data * ve_proc, gftp_dialog_data * ddata)
{
  remove_file (ve_proc->filename);
  free_edit_data (ve_proc);
}


static void
do_upload (gftp_viewedit_data * ve_proc, gftp_dialog_data * ddata)
{
  gftp_transfer * tdata;
  gftp_file * tempfle;
  GList * newfile;

  tempfle = g_malloc0 (sizeof (*tempfle));
  tempfle->destfile = gftp_build_path (ve_proc->torequest,
                                       ve_proc->torequest->directory,
                                       ve_proc->remote_filename, NULL);
  ve_proc->remote_filename = NULL;
  tempfle->file = ve_proc->filename;
  ve_proc->filename = NULL;
  tempfle->done_rm = 1;
  newfile = g_list_append (NULL, tempfle);
  tdata = gftpui_common_add_file_transfer (ve_proc->fromwdata->request,
                                           ve_proc->torequest,
                                           ve_proc->fromwdata,
                                           ve_proc->towdata, newfile);
  free_edit_data (ve_proc);

  if (tdata != NULL)
    tdata->conn_error_no_timeout = 1;
}


static void
check_done_process (void)
{
  gftp_viewedit_data * ve_proc;
  GList * curdata, *deldata;
  int ret, procret;
  struct stat st;
  char *str;
  pid_t pid;

  gftpui_common_child_process_done = 0;
  while ((pid = waitpid (-1, &ret, WNOHANG)) > 0)
    {
      curdata = viewedit_processes;
      while (curdata != NULL)
        {
	  ve_proc = curdata->data;
          deldata = curdata;
          curdata = curdata->next;
	  if (ve_proc->pid == pid)
	    {
	      viewedit_processes = g_list_remove_link (viewedit_processes, 
                                                       deldata);
              if (WIFEXITED (ret))
                {
                  procret = WEXITSTATUS (ret);
                  if (procret != 0)
                    {
                      ftp_log (gftp_logging_error, NULL,
                               _("Error: Child %d returned %d\n"), pid, procret);
                      remove_file (ve_proc->filename);
                      continue;
                    }
                  else
                    ftp_log (gftp_logging_misc, NULL,
                             _("Child %d returned successfully\n"), pid);
                }
              else
                ftp_log (gftp_logging_error, NULL,
                         _("Error: Child %d did not terminate properly\n"),
                         pid);

	      if (!ve_proc->view && !ve_proc->dontupload)
		{
		  /* We was editing the file. Upload it */
		  ret = stat (ve_proc->filename, &st);

                  if (ret == -1)
		    ftp_log (gftp_logging_error, NULL,
		         _("Error: Cannot get information about file %s: %s\n"),
			 ve_proc->filename, g_strerror (errno));
		  else if (st.st_mtime == ve_proc->st.st_mtime)
                    {
		      ftp_log (gftp_logging_misc, NULL,
		  	       _("File %s was not changed\n"),
			       ve_proc->filename);
                      remove_file (ve_proc->filename);
                    }
		  else
		    {