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/*
* ProFTPD - FTP server daemon
* Copyright (c) 1997, 1998 Public Flood Software
* Copyright (c) 1999, 2000 MacGyver aka Habeeb J. Dihu <macgyver@tos.net>
* Copyright (c) 2001-2017 The ProFTPD Project team
*
* 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., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu
* and other respective copyright holders give permission to link this program
* with OpenSSL, and distribute the resulting executable, without including
* the source code for OpenSSL in the source distribution.
*/
/* Server, command and associated prototypes. */
#ifndef PR_DIRTREE_H
#define PR_DIRTREE_H
#include "pool.h"
#include "sets.h"
#include "table.h"
#include "configdb.h"
#include "netaddr.h"
struct conn_struc;
struct tcp_keepalive {
int keepalive_enabled;
int keepalive_idle;
int keepalive_count;
int keepalive_intvl;
};
typedef struct server_struc {
struct server_struc *next, *prev;
struct pool_rec *pool; /* Memory pool for this server */
xaset_t *set; /* Set holding all servers */
/* The label/name for this server configuration. */
const char *ServerName;
/* The address for this server configuration. */
const char *ServerAddress;
/* The fully qualified domain name for this server configuration. */
const char *ServerFQDN;
/* Port number to which to listen. A value of zero disables the server_rec.
*/
unsigned int ServerPort;
/* TCP settings: keepalive, max segment size, receive/send buffer sizes.
*/
struct tcp_keepalive *tcp_keepalive;
int tcp_mss_len;
/* If the tcp_rcvbuf_override/tcp_sndbuf_override flags are true, then
* the corresponding buffer lengths are to be configured as socket options
* via setsockopt(2).
*/
int tcp_rcvbuf_len;
unsigned char tcp_rcvbuf_override;
int tcp_sndbuf_len;
unsigned char tcp_sndbuf_override;
/* Administrator name */
const char *ServerAdmin;
/* Internal address of this server */
const pr_netaddr_t *addr;
/* The listener for this server. Note that this listener, and that
* pointed to by ipbind->ib_listener (where ipbind->ib_server points to
* this server_rec) are the same. Ideally, we'd only want one pointer to
* the listener around, and avoid the duplication. To do this would
* require further structural changes.
*/
struct conn_struc *listen;
/* Configuration details */
xaset_t *conf;
int config_type;
/* Internal server ID, automatically assigned */
unsigned int sid;
/* Private data for passing among modules for this vhost. */
pr_table_t *notes;
} server_rec;
typedef struct cmd_struc {
struct pool_rec *pool;
server_rec *server;
config_rec *config;
struct pool_rec *tmp_pool; /* Temporary pool which only exists
* while the cmd's handler is running
*/
unsigned int argc;
char *arg; /* entire argument (excluding command) */
void **argv;
char *group; /* Command grouping */
int cmd_class; /* The command class */
/* These are used to speed up symbol hashing/lookups in stash.c. */
int stash_index;
unsigned int stash_hash;
pr_table_t *notes; /* Private data for passing/retaining between handlers */
int cmd_id; /* Index into commands list, for faster comparisons */
/* If we detect that the client sent commands for a protocol OTHER than
* FTP, then this field will be FALSE; the protocol field will identify
* the detected protocol.
*/
int is_ftp;
const char *protocol;
} cmd_rec;
/* Operation codes for dir_* funcs */
#define OP_HIDE 1 /* Op for hiding dirs/files */
#define OP_COMMAND 2 /* Command operation */
/* For the Order directive */
#define ORDER_ALLOWDENY 0
#define ORDER_DENYALLOW 1
extern server_rec *main_server;
extern int tcpBackLog;
extern int SocketBindTight;
extern char ServerType;
extern unsigned long ServerMaxInstances;
extern int ServerUseReverseDNS;
/* These macros are used to help handle configuration in modules */
#define CONF_ERROR(x, s) return PR_ERROR_MSG((x),NULL,pstrcat((x)->tmp_pool, \
(x)->argv[0],": ",(s),NULL));
#define CHECK_ARGS(x, n) if ((n) > 0 && (x)->argc > 0 && (x)->argc-1 < (n)) \
CONF_ERROR(x,"missing parameters")
#define CHECK_VARARGS(x, n, m) if ((x)->argc - 1 < n || (x)->argc - 1 > m) \
CONF_ERROR(x,"missing parameters")
#define CHECK_HASARGS(x, n) ((x)->argc - 1) == (n)
#define CHECK_CONF(x,p) if (!check_context((x),(p))) \
CONF_ERROR((x), \
pstrcat((x)->tmp_pool,"directive not allowed in ", \
get_context_name((x)), \
" context",NULL))
#define CHECK_CMD_ARGS(x, n) \
if ((x)->argc != (n)) { \
pr_response_add_err(R_501, _("Invalid number of parameters")); \
return PR_ERROR((x)); \
}
#define CHECK_CMD_MIN_ARGS(x, n) \
if ((x)->argc < (n)) { \
pr_response_add_err(R_501, _("Invalid number of parameters")); \
return PR_ERROR((x)); \
}
/* Prototypes */
/* KLUDGE: disable umask() for not G_WRITE operations. Config/
* Directory walking code will be completely redesigned in 1.3,
* this is only necessary for performance reasons in 1.1/1.2
*/
void kludge_disable_umask(void);
void kludge_enable_umask(void);
int pr_define_add(const char *, int);
unsigned char pr_define_exists(const char *);
int fixup_servers(xaset_t *list);
xaset_t *get_dir_ctxt(pool *, char *);
/* Returns the buffer size to use for data transfers, regardless of IO
* direction.
*/
int pr_config_get_xfer_bufsz(void);
/* Returns the buffer size to use for data transfers given an IO direction
* (either PR_NETIO_IO_RD for reads/uploads, or PR_NETIO_IO_WR for
* writes/downloads).
*/
int pr_config_get_xfer_bufsz2(int);
/* Returns the buffer size to use for data transfers given an IO direction
* (either PR_NETIO_IO_RD for reads/uploads, or PR_NETIO_IO_WR for
* writes/downloads). This takes into account any server-specific buffer
* sizes, e.g. as configured via SocketOptions.
*/
int pr_config_get_server_xfer_bufsz(int);
config_rec *dir_match_path(pool *, char *);
void build_dyn_config(pool *, const char *, struct stat *, unsigned char);
unsigned char dir_hide_file(const char *);
int dir_check_full(pool *, cmd_rec *, const char *, const char *, int *);
int dir_check_limits(cmd_rec *, config_rec *, const char *, int);
int dir_check(pool *, cmd_rec *, const char *, const char *, int *);
int dir_check_canon(pool *, cmd_rec *, const char *, const char *, int *);
int is_dotdir(const char *);
int login_check_limits(xaset_t *, int, int, int *);
void resolve_anonymous_dirs(xaset_t *);
void resolve_deferred_dirs(server_rec *);
void fixup_dirs(server_rec *, int);
unsigned char check_context(cmd_rec *, int);
char *get_context_name(cmd_rec *);
int get_boolean(cmd_rec *, int);
const char *get_full_cmd(cmd_rec *);
/* Internal use only. */
void init_dirtree(void);
#ifdef PR_USE_DEVEL
void pr_dirs_dump(void (*)(const char *, ...), xaset_t *, char *);
#endif /* PR_USE_DEVEL */
#endif /* PR_DIRTREE_H */