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ftpc_internal.h
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/****************************************************************************
* apps/netutils/ftpc/ftpc_internal.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#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 <nuttx/wdog.h>
#include <netinet/in.h>
#include "netutils/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 */
union ftpc_sockaddr_u laddr; /* Local Address */
bool connected; /* True: socket is connected */
};
/* This structure represents the state of an FTP connection */
struct ftpc_session_s
{
union ftpc_sockaddr_u server; /* Server/proxy socket address */
struct ftpc_socket_s cmd; /* FTP command channel */
struct ftpc_socket_s data; /* FTP data channel */
struct ftpc_socket_s dacceptor; /* FTP data listener (accepts data connection in active mode) */
struct wdog_s 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 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 Function Prototypes
****************************************************************************/
/* 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, ...)
printf_like(2, 3);
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, sa_family_t family);
EXTERN void ftpc_sockclose(FAR struct ftpc_socket_s *sock);
EXTERN int ftpc_sockconnect(FAR struct ftpc_socket_s *sock,
FAR struct sockaddr *addr);
EXTERN int ftpc_sockgetsockname(FAR struct ftpc_socket_s *sock,
FAR union ftpc_sockaddr_u *addr);
EXTERN int ftpc_sockaccept(FAR struct ftpc_socket_s *acceptor,
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, ...) printf_like(2, 3);
EXTERN void ftpc_timeout(wdparm_t arg);
/* 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 */