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px4-firmware/apps/netutils/ftpc/ftpc_internal.h

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/****************************************************************************
* apps/netutils/ftpc/ftpc_internal.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name NuttX nor the names of its 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 __APPS_NETUTILS_FTPC_FTPC_INTERNAL_H
#define __APPS_NETUTILS_FTPC_FTPC_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include "ftpc_config.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
#include <wdog.h>
#include <apps/ftpc.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* MISC definitions *********************************************************/
#define ISO_nl 0x0a
#define ISO_cr 0x0d
/* Telnet-related definitions */
#define TELNET_DM 242
#define TELNET_IP 244
#define TELNET_IAC 255
#define TELNET_WILL 251
#define TELNET_WONT 252
#define TELNET_DO 253
#define TELNET_DONT 254
/* Session flag bits ********************************************************/
#define FTPC_FLAG_PASSIVE (1 << 0) /* Passive mode requested */
#define FTPC_SESSION_FLAGS (0x0001) /* Persist throughout the session */
#define FTPC_FLAG_CONNECTED (1 << 1) /* Connected to host */
#define FTPC_FLAG_LOGGEDIN (1 << 2) /* Logged in to host */
#define FTPC_STATE_FLAGS (0x0006) /* State of connection */
#define FTPC_FLAG_MDTM (1 << 3) /* Host supports MDTM command */
#define FTPC_FLAG_SIZE (1 << 4) /* Host supports SIZE command */
#define FTPC_FLAG_PASV (1 << 5) /* Host supports PASV command */
#define FTPC_FLAG_STOU (1 << 6) /* Host supports STOU command */
#define FTPC_FLAG_CHMOD (1 << 7) /* Host supports SITE CHMOD command */
#define FTPC_FLAG_IDLE (1 << 8) /* Host supports SITE IDLE command */
#define FTPC_HOSTCAP_FLAGS (0x01f8) /* Host capabilities */
#define FTPC_FLAG_INTERRUPT (1 << 9) /* Transfer interrupted */
#define FTPC_FLAG_PUT (1 << 10) /* Transfer is a PUT operation (upload) */
#define FTPC_XFER_FLAGS (0x0600) /* Transfer related */
/* These are the bits to be set/cleared when the flags are reset */
#define FTPC_FLAGS_CLEAR (FTPC_STATE_FLAGS | FTPC_XFER_FLAGS)
#define FTPC_FLAGS_SET FTPC_HOSTCAP_FLAGS
/* Macros to set bits */
#define FTPC_SET_CONNECTED(s) do { (s)->flags |= FTPC_FLAG_CONNECTED; } while (0)
#define FTPC_SET_LOGGEDIN(s) do { (s)->flags |= FTPC_FLAG_LOGGEDIN; } while (0)
#define FTPC_SET_MDTM(s) do { (s)->flags |= FTPC_FLAG_MDTM; } while (0)
#define FTPC_SET_SIZE(s) do { (s)->flags |= FTPC_FLAG_SIZE; } while (0)
#define FTPC_SET_PASV(s) do { (s)->flags |= FTPC_FLAG_PASV; } while (0)
#define FTPC_SET_STOU(s) do { (s)->flags |= FTPC_FLAG_STOU; } while (0)
#define FTPC_SET_CHMOD(s) do { (s)->flags |= FTPC_FLAG_CHMOD; } while (0)
#define FTPC_SET_IDLE(s) do { (s)->flags |= FTPC_FLAG_IDLE; } while (0)
#define FTPC_SET_INTERRUPT(s) do { (s)->flags |= FTPC_FLAG_INTERRUPT; } while (0)
#define FTPC_SET_PUT(s) do { (s)->flags |= FTPC_FLAG_PUT; } while (0)
#define FTPC_SET_PASSIVE(s) do { (s)->flags |= FTPC_FLAG_PASSIVE; } while (0)
/* Macros to clear bits */
#define FTPC_CLR_CONNECTED(s) do { (s)->flags &= ~FTPC_FLAG_CONNECTED; } while (0)
#define FTPC_CLR_LOGGEDIN(s) do { (s)->flags &= ~FTPC_FLAG_LOGGEDIN; } while (0)
#define FTPC_CLR_MDTM(s) do { (s)->flags &= ~FTPC_FLAG_MDTM; } while (0)
#define FTPC_CLR_SIZE(s) do { (s)->flags &= ~FTPC_FLAG_SIZE; } while (0)
#define FTPC_CLR_PASV(s) do { (s)->flags &= ~FTPC_FLAG_PASV; } while (0)
#define FTPC_CLR_STOU(s) do { (s)->flags &= ~FTPC_FLAG_STOU; } while (0)
#define FTPC_CLR_CHMOD(s) do { (s)->flags &= ~FTPC_FLAG_CHMOD; } while (0)
#define FTPC_CLR_IDLE(s) do { (s)->flags &= ~FTPC_FLAG_IDLE; } while (0)
#define FTPC_CLR_INTERRUPT(s) do { (s)->flags &= ~FTPC_FLAG_INTERRUPT; } while (0)
#define FTPC_CLR_PUT(s) do { (s)->flags &= ~FTPC_FLAG_PUT; } while (0)
#define FTPC_CLR_PASSIVE(s) do { (s)->flags &= ~FTPC_FLAG_PASSIVE; } while (0)
/* Macros to test bits */
#define FTPC_IS_CONNECTED(s) (((s)->flags & FTPC_FLAG_CONNECTED) != 0)
#define FTPC_IS_LOGGEDIN(s) (((s)->flags & FTPC_FLAG_LOGGEDIN) != 0)
#define FTPC_HAS_MDTM(s) (((s)->flags & FTPC_FLAG_MDTM) != 0)
#define FTPC_HAS_SIZE(s) (((s)->flags & FTPC_FLAG_SIZE) != 0)
#define FTPC_HAS_PASV(s) (((s)->flags & FTPC_FLAG_PASV) != 0)
#define FTPC_HAS_STOU(s) (((s)->flags & FTPC_FLAG_STOU) != 0)
#define FTPC_HAS_CHMOD(s) (((s)->flags & FTPC_FLAG_CHMOD) != 0)
#define FTPC_HAS_IDLE(s) (((s)->flags & FTPC_FLAG_IDLE) != 0)
#define FTPC_INTERRUPTED(s) (((s)->flags & FTPC_FLAG_INTERRUPT) != 0)
#define FTPC_IS_PUT(s) (((s)->flags & FTPC_FLAG_PUT) != 0)
#define FTPC_IS_PASSIVE(s) (((s)->flags & FTPC_FLAG_PASSIVE) != 0)
/****************************************************************************
* Public Types
****************************************************************************/
/* This structure represents the state of one socket connection */
struct ftpc_socket_s
{
int sd; /* Socket descriptor */
FILE *instream; /* Incoming stream */
FILE *outstream; /* Outgoing stream */
struct sockaddr_in laddr; /* Local address */
bool connected; /* True: socket is connected */
};
/* This structure represents the state of an FTP connection */
struct ftpc_session_s
{
struct in_addr addr; /* Server/proxy IP address */
struct ftpc_socket_s cmd; /* FTP command channel */
struct ftpc_socket_s data; /* FTP data channel */
WDOG_ID wdog; /* Timer */
FAR char *uname; /* Login uname */
FAR char *pwd; /* Login pwd */
FAR char *initrdir; /* Initial remote directory */
FAR char *homerdir; /* Remote home directory (currdir on startup) */
FAR char *currdir; /* Remote current directory */
FAR char *homeldir; /* Local home directory (PWD on startup) */
pid_t pid; /* Task ID of FTP client */
uint8_t xfrmode; /* Previous data transfer type (See FTPC_XFRMODE_* defines) */
uint16_t port; /* Server/proxy port number (probably 21) */
uint16_t flags; /* Connection flags (see FTPC_FLAGS_* defines) */
uint16_t code; /* Last 3-digit reply code */
uint32_t replytimeo; /* Server reply timeout (ticks) */
uint32_t conntimeo; /* Connection timeout (ticks) */
off_t offset; /* Transfer file offset */
off_t size; /* Number of bytes transferred */
char reply[CONFIG_FTP_MAXREPLY+1]; /* Last reply string from server */
char buffer[CONFIG_FTP_BUFSIZE]; /* Used to buffer file data during transfers */
};
/* There is not yet any want to change the local working directly (an lcd
* command), but the following definition is provided to reserve the name
* for the storage location for the local current working directory.
*/
#define curldir homeldir
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Inline Functions/Function-like Macros
****************************************************************************/
#define ftpc_sockconnected(s) \
((s) && (s)->connected)
#define ftpc_connected(s) \
(FTPC_IS_CONNECTED(session) && ftpc_sockconnected(&session->cmd))
#define ftpc_loggedin(s) \
(ftpc_connected(s) && FTPC_IS_LOGGEDIN(s))
#define ftpc_sockgetc(s) \
fgetc((s)->instream)
#define ftpc_sockflush(s) \
fflush((s)->outstream)
#define ftpc_sockvprintf(s,f,ap) \
vfprintf((s)->outstream,f,ap)
/****************************************************************************
* Public Functions
****************************************************************************/
/* Low-level string management */
EXTERN void ftpc_stripcrlf(FAR char *str);
EXTERN void ftpc_stripslash(FAR char *str);
EXTERN FAR char *ftpc_dequote(FAR const char *hostname);
/* Connection helpers */
EXTERN int ftpc_reconnect(FAR struct ftpc_session_s *session);
EXTERN int ftpc_relogin(FAR struct ftpc_session_s *session);
/* FTP helpers */
EXTERN void ftpc_reset(struct ftpc_session_s *session);
EXTERN int ftpc_cmd(struct ftpc_session_s *session, const char *cmd, ...);
EXTERN int fptc_getreply(struct ftpc_session_s *session);
EXTERN FAR const char *ftpc_lpwd(void);
EXTERN int ftpc_xfrmode(struct ftpc_session_s *session, uint8_t xfrmode);
EXTERN FAR char *ftpc_absrpath(FAR struct ftpc_session_s *session,
FAR const char *relpath);
EXTERN FAR char *ftpc_abslpath(FAR struct ftpc_session_s *session,
FAR const char *relpath);
/* Socket helpers */
EXTERN int ftpc_sockinit(FAR struct ftpc_socket_s *sock);
EXTERN void ftpc_sockclose(FAR struct ftpc_socket_s *sock);
EXTERN int ftpc_sockconnect(FAR struct ftpc_socket_s *sock,
FAR struct sockaddr_in *addr);
EXTERN int ftpc_sockgetsockname(FAR struct ftpc_socket_s *sock,
FAR struct sockaddr_in *sa);
EXTERN int ftpc_sockaccept(FAR struct ftpc_socket_s *sock);
EXTERN int ftpc_socklisten(FAR struct ftpc_socket_s *sock);
EXTERN void ftpc_sockcopy(FAR struct ftpc_socket_s *dest,
FAR const struct ftpc_socket_s *src);
/* Socket I/O helpers */
EXTERN int ftpc_sockprintf(FAR struct ftpc_socket_s *sock, const char *fmt, ...);
EXTERN void ftpc_timeout(int argc, uint32_t arg1, ...);
/* Transfer helpers */
EXTERN int ftpc_xfrinit(FAR struct ftpc_session_s *session);
EXTERN int ftpc_recvtext(FAR struct ftpc_session_s *session,
FAR FILE *rinstream, FAR FILE *loutstream);
EXTERN int ftpc_waitdata(FAR struct ftpc_session_s *session,
FAR FILE *stream, bool rdwait);
EXTERN void ftpc_xfrreset(struct ftpc_session_s *session);
EXTERN int ftpc_xfrabort(FAR struct ftpc_session_s *session,
FAR FILE *stream);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __APPS_NETUTILS_FTPC_FTPC_INTERNAL_H */
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