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/* Virtual File System: SFTP file system.
The internal functions: dirs
Copyright (C) 2011-2022
Free Software Foundation, Inc.
Written by:
Ilia Maslakov <il.smind@gmail.com>, 2011
Slava Zanko <slavazanko@gmail.com>, 2011, 2012
This file is part of the Midnight Commander.
The Midnight Commander 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 3 of the License,
or (at your option) any later version.
The Midnight Commander 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, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <libssh2.h>
#include <libssh2_sftp.h>
#include "lib/global.h"
#include "lib/util.h"
#include "internal.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
typedef struct
{
LIBSSH2_SFTP_HANDLE *handle;
sftpfs_super_t *super;
} sftpfs_dir_data_t;
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
* Open a directory stream corresponding to the directory name.
*
* @param vpath path to directory
* @param mcerror pointer to the error handler
* @return directory data handler if success, NULL otherwise
*/
void *
sftpfs_opendir (const vfs_path_t * vpath, GError ** mcerror)
{
sftpfs_dir_data_t *sftpfs_dir;
struct vfs_s_super *super;
sftpfs_super_t *sftpfs_super;
const vfs_path_element_t *path_element;
LIBSSH2_SFTP_HANDLE *handle;
const GString *fixfname;
mc_return_val_if_error (mcerror, NULL);
path_element = vfs_path_get_by_index (vpath, -1);
if (vfs_s_get_path (vpath, &super, 0) == NULL)
return NULL;
sftpfs_super = SFTP_SUPER (super);
fixfname = sftpfs_fix_filename (path_element->path);
while (TRUE)
{
int libssh_errno;
handle =
libssh2_sftp_open_ex (sftpfs_super->sftp_session, fixfname->str, fixfname->len, 0, 0,
LIBSSH2_SFTP_OPENDIR);
if (handle != NULL)
break;
libssh_errno = libssh2_session_last_errno (sftpfs_super->session);
if (!sftpfs_waitsocket (sftpfs_super, libssh_errno, mcerror))
return NULL;
}
sftpfs_dir = g_new0 (sftpfs_dir_data_t, 1);
sftpfs_dir->handle = handle;
sftpfs_dir->super = sftpfs_super;
return (void *) sftpfs_dir;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Get a pointer to a structure representing the next directory entry.
*
* @param data directory data handler
* @param mcerror pointer to the error handler
* @return information about direntry if success, NULL otherwise
*/
struct vfs_dirent *
sftpfs_readdir (void *data, GError ** mcerror)
{
char mem[BUF_MEDIUM];
LIBSSH2_SFTP_ATTRIBUTES attrs;
sftpfs_dir_data_t *sftpfs_dir = (sftpfs_dir_data_t *) data;
int rc;
mc_return_val_if_error (mcerror, NULL);
do
{
rc = libssh2_sftp_readdir (sftpfs_dir->handle, mem, sizeof (mem), &attrs);
if (rc >= 0)
break;
if (!sftpfs_waitsocket (sftpfs_dir->super, rc, mcerror))
return NULL;
}
while (rc == LIBSSH2_ERROR_EAGAIN);
return (rc != 0 ? vfs_dirent_init (NULL, mem, 0) : NULL); /* FIXME: inode */
}
/* --------------------------------------------------------------------------------------------- */
/**
* Close the directory stream.
*
* @param data directory data handler
* @param mcerror pointer to the error handler
* @return 0 if success, negative value otherwise
*/
int
sftpfs_closedir (void *data, GError ** mcerror)
{
int rc;
sftpfs_dir_data_t *sftpfs_dir = (sftpfs_dir_data_t *) data;
mc_return_val_if_error (mcerror, -1);
rc = libssh2_sftp_closedir (sftpfs_dir->handle);
g_free (sftpfs_dir);
return rc;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Create a new directory.
*
* @param vpath path directory
* @param mode mode (see man 2 open)
* @param mcerror pointer to the error handler
* @return 0 if success, negative value otherwise
*/
int
sftpfs_mkdir (const vfs_path_t * vpath, mode_t mode, GError ** mcerror)
{
int res;
struct vfs_s_super *super;
sftpfs_super_t *sftpfs_super;
const vfs_path_element_t *path_element;
const GString *fixfname;
mc_return_val_if_error (mcerror, -1);
path_element = vfs_path_get_by_index (vpath, -1);
if (vfs_s_get_path (vpath, &super, 0) == NULL)
return -1;
if (super == NULL)
return -1;
sftpfs_super = SFTP_SUPER (super);
if (sftpfs_super->sftp_session == NULL)
return -1;
fixfname = sftpfs_fix_filename (path_element->path);
do
{
res =
libssh2_sftp_mkdir_ex (sftpfs_super->sftp_session, fixfname->str, fixfname->len, mode);
if (res >= 0)
break;
if (!sftpfs_waitsocket (sftpfs_super, res, mcerror))
return -1;
}
while (res == LIBSSH2_ERROR_EAGAIN);
return res;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Remove a directory.
*
* @param vpath path directory
* @param mcerror pointer to the error handler
* @return 0 if success, negative value otherwise
*/
int
sftpfs_rmdir (const vfs_path_t * vpath, GError ** mcerror)
{
int res;
struct vfs_s_super *super;
sftpfs_super_t *sftpfs_super;
const vfs_path_element_t *path_element;
const GString *fixfname;
mc_return_val_if_error (mcerror, -1);
path_element = vfs_path_get_by_index (vpath, -1);
if (vfs_s_get_path (vpath, &super, 0) == NULL)
return -1;
if (super == NULL)
return -1;
sftpfs_super = SFTP_SUPER (super);
if (sftpfs_super->sftp_session == NULL)
return -1;
fixfname = sftpfs_fix_filename (path_element->path);
do
{
res = libssh2_sftp_rmdir_ex (sftpfs_super->sftp_session, fixfname->str, fixfname->len);
if (res >= 0)
break;
if (!sftpfs_waitsocket (sftpfs_super, res, mcerror))
return -1;
}
while (res == LIBSSH2_ERROR_EAGAIN);
return res;
}
/* --------------------------------------------------------------------------------------------- */
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