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ssh2/include/libssh2_sftp.h
James Housley 2dc313d365 Non-blocking work 
* The following low level packet routines now fully support non-blocking:
    libssh2_sftp_packet_read()
    libssh2_sftp_packet_ask()
    libssh2_sftp_packet_require()
    libssh2_sftp_packet_requirev()

* libssh2_sftp_readdirnb() functions completely in non-blocking mode

* The rest of the routines which call the libssh2_sftp_packet_* routine
  loop on a return code of PACKET_EAGAIN.  This maintains the current
  functionality until they fully support non-blocking

* The state of all function are labeled with either NB-SAFE or NB-UNSAFE,
  for those that are know.  NB-UNSAFE?? for those that haven't been
  examined.
2007-04-21 18:16:23 +00:00

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/* Copyright (c) 2004-2007, Sara Golemon <sarag@libssh2.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the copyright holder nor the names
* of any other contributors may be used to endorse or
* promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#ifndef LIBSSH2_SFTP_H
#define LIBSSH2_SFTP_H 1
#ifndef WIN32
#include <unistd.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Note: Version 6 was documented at the time of writing
* However it was marked as "DO NOT IMPLEMENT" due to pending changes
*
* Let's start with Version 3 (The version found in OpenSSH) and go from there
*/
#define LIBSSH2_SFTP_VERSION 3
#define LIBSSH2_SFTP_PACKET_MAXLEN 40000
typedef struct _LIBSSH2_SFTP LIBSSH2_SFTP;
typedef struct _LIBSSH2_SFTP_HANDLE LIBSSH2_SFTP_HANDLE;
typedef struct _LIBSSH2_SFTP_ATTRIBUTES LIBSSH2_SFTP_ATTRIBUTES;
/* Flags for open_ex() */
#define LIBSSH2_SFTP_OPENFILE 0
#define LIBSSH2_SFTP_OPENDIR 1
/* Flags for rename_ex() */
#define LIBSSH2_SFTP_RENAME_OVERWRITE 0x00000001
#define LIBSSH2_SFTP_RENAME_ATOMIC 0x00000002
#define LIBSSH2_SFTP_RENAME_NATIVE 0x00000004
/* Flags for stat_ex() */
#define LIBSSH2_SFTP_STAT 0
#define LIBSSH2_SFTP_LSTAT 1
#define LIBSSH2_SFTP_SETSTAT 2
/* Flags for symlink_ex() */
#define LIBSSH2_SFTP_SYMLINK 0
#define LIBSSH2_SFTP_READLINK 1
#define LIBSSH2_SFTP_REALPATH 2
/* SFTP attribute flag bits */
#define LIBSSH2_SFTP_ATTR_SIZE 0x00000001
#define LIBSSH2_SFTP_ATTR_UIDGID 0x00000002
#define LIBSSH2_SFTP_ATTR_PERMISSIONS 0x00000004
#define LIBSSH2_SFTP_ATTR_ACMODTIME 0x00000008
#define LIBSSH2_SFTP_ATTR_EXTENDED 0x80000000
struct _LIBSSH2_SFTP_ATTRIBUTES {
/* If flags & ATTR_* bit is set, then the value in this struct will be meaningful
* Otherwise it should be ignored
*/
unsigned long flags;
libssh2_uint64_t filesize;
unsigned long uid, gid;
unsigned long permissions;
unsigned long atime, mtime;
};
/* SFTP filetypes */
#define LIBSSH2_SFTP_TYPE_REGULAR 1
#define LIBSSH2_SFTP_TYPE_DIRECTORY 2
#define LIBSSH2_SFTP_TYPE_SYMLINK 3
#define LIBSSH2_SFTP_TYPE_SPECIAL 4
#define LIBSSH2_SFTP_TYPE_UNKNOWN 5
#define LIBSSH2_SFTP_TYPE_SOCKET 6
#define LIBSSH2_SFTP_TYPE_CHAR_DEVICE 7
#define LIBSSH2_SFTP_TYPE_BLOCK_DEVICE 8
#define LIBSSH2_SFTP_TYPE_FIFO 9
/*
* Reproduce the POSIX file modes here for systems that are not
* POSIX compliant.
*
* These is used in "permissions" of "struct _LIBSSH2_SFTP_ATTRIBUTES"
*/
/* File type */
#define LIBSSH2_SFTP_S_IFMT 0170000 /* type of file mask */
#define LIBSSH2_SFTP_S_IFIFO 0010000 /* named pipe (fifo) */
#define LIBSSH2_SFTP_S_IFCHR 0020000 /* character special */
#define LIBSSH2_SFTP_S_IFDIR 0040000 /* directory */
#define LIBSSH2_SFTP_S_IFBLK 0060000 /* block special */
#define LIBSSH2_SFTP_S_IFREG 0100000 /* regular */
#define LIBSSH2_SFTP_S_IFLNK 0120000 /* symbolic link */
#define LIBSSH2_SFTP_S_IFSOCK 0140000 /* socket */
/* File mode */
/* Read, write, execute/search by owner */
#define LIBSSH2_SFTP_S_IRWXU 0000700 /* RWX mask for owner */
#define LIBSSH2_SFTP_S_IRUSR 0000400 /* R for owner */
#define LIBSSH2_SFTP_S_IWUSR 0000200 /* W for owner */
#define LIBSSH2_SFTP_S_IXUSR 0000100 /* X for owner */
/* Read, write, execute/search by group */
#define LIBSSH2_SFTP_S_IRWXG 0000070 /* RWX mask for group */
#define LIBSSH2_SFTP_S_IRGRP 0000040 /* R for group */
#define LIBSSH2_SFTP_S_IWGRP 0000020 /* W for group */
#define LIBSSH2_SFTP_S_IXGRP 0000010 /* X for group */
/* Read, write, execute/search by others */
#define LIBSSH2_SFTP_S_IRWXO 0000007 /* RWX mask for other */
#define LIBSSH2_SFTP_S_IROTH 0000004 /* R for other */
#define LIBSSH2_SFTP_S_IWOTH 0000002 /* W for other */
#define LIBSSH2_SFTP_S_IXOTH 0000001 /* X for other */
/* SFTP File Transfer Flags -- (e.g. flags parameter to sftp_open())
* Danger will robinson... APPEND doesn't have any effect on OpenSSH servers */
#define LIBSSH2_FXF_READ 0x00000001
#define LIBSSH2_FXF_WRITE 0x00000002
#define LIBSSH2_FXF_APPEND 0x00000004
#define LIBSSH2_FXF_CREAT 0x00000008
#define LIBSSH2_FXF_TRUNC 0x00000010
#define LIBSSH2_FXF_EXCL 0x00000020
/* SFTP Status Codes (returned by libssh2_sftp_last_error() ) */
#define LIBSSH2_FX_OK 0
#define LIBSSH2_FX_EOF 1
#define LIBSSH2_FX_NO_SUCH_FILE 2
#define LIBSSH2_FX_PERMISSION_DENIED 3
#define LIBSSH2_FX_FAILURE 4
#define LIBSSH2_FX_BAD_MESSAGE 5
#define LIBSSH2_FX_NO_CONNECTION 6
#define LIBSSH2_FX_CONNECTION_LOST 7
#define LIBSSH2_FX_OP_UNSUPPORTED 8
#define LIBSSH2_FX_INVALID_HANDLE 9
#define LIBSSH2_FX_NO_SUCH_PATH 10
#define LIBSSH2_FX_FILE_ALREADY_EXISTS 11
#define LIBSSH2_FX_WRITE_PROTECT 12
#define LIBSSH2_FX_NO_MEDIA 13
#define LIBSSH2_FX_NO_SPACE_ON_FILESYSTEM 14
#define LIBSSH2_FX_QUOTA_EXCEEDED 15
#define LIBSSH2_FX_UNKNOWN_PRINCIPLE 16
#define LIBSSH2_FX_LOCK_CONFlICT 17
#define LIBSSH2_FX_DIR_NOT_EMPTY 18
#define LIBSSH2_FX_NOT_A_DIRECTORY 19
#define LIBSSH2_FX_INVALID_FILENAME 20
#define LIBSSH2_FX_LINK_LOOP 21
/* SFTP API */
LIBSSH2_API LIBSSH2_SFTP *libssh2_sftp_init(LIBSSH2_SESSION *session);
LIBSSH2_API int libssh2_sftp_shutdown(LIBSSH2_SFTP *sftp);
LIBSSH2_API unsigned long libssh2_sftp_last_error(LIBSSH2_SFTP *sftp);
/* File / Directory Ops */
LIBSSH2_API LIBSSH2_SFTP_HANDLE *libssh2_sftp_open_ex(LIBSSH2_SFTP *sftp, const char *filename, unsigned int filename_len, unsigned long flags, long mode, int open_type);
#define libssh2_sftp_open(sftp, filename, flags, mode) libssh2_sftp_open_ex((sftp), (filename), strlen(filename), (flags), (mode), LIBSSH2_SFTP_OPENFILE)
#define libssh2_sftp_opendir(sftp, path) libssh2_sftp_open_ex((sftp), (path), strlen(path), 0, 0, LIBSSH2_SFTP_OPENDIR)
/* This is a public error code from libssh2_sftp_read() that is returned
when it would otherwise block. */
#define LIBSSH2SFTP_EAGAIN -2
LIBSSH2_API ssize_t libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle,
char *buffer, size_t buffer_maxlen);
LIBSSH2_API ssize_t libssh2_sftp_readnb(LIBSSH2_SFTP_HANDLE *handle,
char *buffer, size_t buffer_maxlen);
LIBSSH2_API int libssh2_sftp_readdir(LIBSSH2_SFTP_HANDLE *handle, char *buffer,
size_t buffer_maxlen, LIBSSH2_SFTP_ATTRIBUTES *attrs);
LIBSSH2_API int libssh2_sftp_readdirnb(LIBSSH2_SFTP_HANDLE *handle, char *buffer,
size_t buffer_maxlen, LIBSSH2_SFTP_ATTRIBUTES *attrs);
LIBSSH2_API ssize_t libssh2_sftp_write(LIBSSH2_SFTP_HANDLE *handle,
const char *buffer, size_t count);
LIBSSH2_API ssize_t libssh2_sftp_writenb(LIBSSH2_SFTP_HANDLE *handle,
const char *buffer, size_t count);
LIBSSH2_API int libssh2_sftp_close_handle(LIBSSH2_SFTP_HANDLE *handle);
#define libssh2_sftp_close(handle) libssh2_sftp_close_handle(handle)
#define libssh2_sftp_closedir(handle) libssh2_sftp_close_handle(handle)
LIBSSH2_API void libssh2_sftp_seek(LIBSSH2_SFTP_HANDLE *handle, size_t offset);
#define libssh2_sftp_rewind(handle) libssh2_sftp_seek((handle), 0)
LIBSSH2_API size_t libssh2_sftp_tell(LIBSSH2_SFTP_HANDLE *handle);
LIBSSH2_API int libssh2_sftp_fstat_ex(LIBSSH2_SFTP_HANDLE *handle, LIBSSH2_SFTP_ATTRIBUTES *attrs, int setstat);
#define libssh2_sftp_fstat(handle, attrs) libssh2_sftp_fstat_ex((handle), (attrs), 0)
#define libssh2_sftp_fsetstat(handle, attrs) libssh2_sftp_fstat_ex((handle), (attrs), 1)
/* Miscellaneous Ops */
LIBSSH2_API int libssh2_sftp_rename_ex(LIBSSH2_SFTP *sftp, const char *source_filename, unsigned int srouce_filename_len,
const char *dest_filename, unsigned int dest_filename_len,
long flags);
#define libssh2_sftp_rename(sftp, sourcefile, destfile) libssh2_sftp_rename_ex((sftp), (sourcefile), strlen(sourcefile), (destfile), strlen(destfile), \
LIBSSH2_SFTP_RENAME_OVERWRITE | LIBSSH2_SFTP_RENAME_ATOMIC | LIBSSH2_SFTP_RENAME_NATIVE)
LIBSSH2_API int libssh2_sftp_unlink_ex(LIBSSH2_SFTP *sftp, const char *filename, unsigned int filename_len);
#define libssh2_sftp_unlink(sftp, filename) libssh2_sftp_unlink_ex((sftp), (filename), strlen(filename))
LIBSSH2_API int libssh2_sftp_mkdir_ex(LIBSSH2_SFTP *sftp, const char *path, unsigned int path_len, long mode);
#define libssh2_sftp_mkdir(sftp, path, mode) libssh2_sftp_mkdir_ex((sftp), (path), strlen(path), (mode))
LIBSSH2_API int libssh2_sftp_rmdir_ex(LIBSSH2_SFTP *sftp, const char *path, unsigned int path_len);
#define libssh2_sftp_rmdir(sftp, path) libssh2_sftp_rmdir_ex((sftp), (path), strlen(path))
LIBSSH2_API int libssh2_sftp_stat_ex(LIBSSH2_SFTP *sftp, const char *path, unsigned int path_len, int stat_type, LIBSSH2_SFTP_ATTRIBUTES *attrs);
#define libssh2_sftp_stat(sftp, path, attrs) libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_STAT, (attrs))
#define libssh2_sftp_lstat(sftp, path, attrs) libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_LSTAT, (attrs))
#define libssh2_sftp_setstat(sftp, path, attrs) libssh2_sftp_stat_ex((sftp), (path), strlen(path), LIBSSH2_SFTP_SETSTAT, (attrs))
LIBSSH2_API int libssh2_sftp_symlink_ex(LIBSSH2_SFTP *sftp, const char *path, unsigned int path_len, char *target, unsigned int target_len, int link_type);
#define libssh2_sftp_symlink(sftp, orig, linkpath) libssh2_sftp_symlink_ex((sftp), (orig), strlen(orig), (linkpath), strlen(linkpath), LIBSSH2_SFTP_SYMLINK)
#define libssh2_sftp_readlink(sftp, path, target, maxlen) libssh2_sftp_symlink_ex((sftp), (path), strlen(path), (target), (maxlen), LIBSSH2_SFTP_READLINK)
#define libssh2_sftp_realpath(sftp, path, target, maxlen) libssh2_sftp_symlink_ex((sftp), (path), strlen(path), (target), (maxlen), LIBSSH2_SFTP_REALPATH)
LIBSSH2_API void libssh2_sftp_set_blocking(LIBSSH2_SFTP *session, int blocking);
LIBSSH2_API int libssh2_sftp_get_blocking(LIBSSH2_SFTP *session);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LIBSSH2_SFTP_H */
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