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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) 2001-2016 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.
*/
/* BSD socket manipulation tools. */
#ifndef PR_INET_H
#define PR_INET_H
#include "conf.h"
#ifndef AF_INET6
# define AF_INET6 AF_UNSPEC
#endif /* AF_INET6 */
#ifndef INADDR_ANY
# define INADDR_ANY ((unsigned long int) 0x00000000)
#endif /* INADDR_ANY */
#ifndef INADDR_LOOPBACK
# define INADDR_LOOPBACK ((unsigned long int) 0x7f000001)
#endif /* INADDR_LOOPBACK */
#ifndef INADDR_NONE
# define INADDR_NONE 0xffffffff
#endif /* INADDR_NONE */
#ifndef INPORT_ANY
# define INPORT_ANY 0
#endif
#ifndef IN6_IS_ADDR_UNSPECIFIED
# define IN6_IS_ADDR_UNSPECIFIED(a) 0
#endif
#ifndef IN6_IS_ADDR_LOOPBACK
# define IN6_IS_ADDR_LOOPBACK(a) 0
#endif
#ifndef IN6_IS_ADDR_MULTICAST
# define IN6_IS_ADDR_MULTICAST(a) 0
#endif
#ifndef IN6_IS_ADDR_LINKLOCAL
# define IN6_IS_ADDR_LINKLOCAL(a) 0
#endif
#ifndef IN6_IS_ADDR_SITELOCAL
# define IN6_IS_ADDR_SITELOCAL(a) 0
#endif
#ifndef IN6_IS_ADDR_V4MAPPED
# define IN6_IS_ADDR_V4MAPPED(a) 0
#endif
#ifndef IN6_IS_ADDR_V4COMPAT
# define IN6_IS_ADDR_V4COMPAT(a) 0
#endif
#ifndef IN6_ARE_ADDR_EQUAL
# define IN6_ARE_ADDR_EQUAL(a, b) 0
#endif
#ifndef U32BITS
# define U32BITS 0xffffffff
#endif
/* Connection modes */
#define CM_NONE 0
#define CM_LISTEN 1
#define CM_OPEN 2
#define CM_ACCEPT 3
#define CM_CONNECT 4
#define CM_CLOSED 5
#define CM_ERROR 6
/* connection structure */
typedef struct conn_struc {
struct conn_struc *next;
struct pool_rec *pool;
int mode; /* Current connection mode */
int listen_fd; /* Listening file descriptor */
int rcvbuf, sndbuf; /* Socket recv and send sizes */
int xerrno; /* Set to error if mode == CM_ERROR */
int rfd,wfd; /* Read and write fds */
pr_netio_stream_t *instrm, *outstrm; /* Input/Output streams */
/* Remote address of the connection. */
const pr_netaddr_t *remote_addr;
/* Remote port of the connection. */
int remote_port;
/* Remote FQDN of the connection. */
const char *remote_name;
/* Local address of the connection. */
const pr_netaddr_t *local_addr;
/* Local port of the connection. */
int local_port;
} conn_t;
/* Used for event data for events related to opening of sockets */
struct socket_ctx {
server_rec *server;
const pr_netaddr_t *addr;
int sockfd;
};
/* Prototypes */
void pr_inet_clear(void);
int pr_inet_reverse_dns(pool *, int);
int pr_inet_getservport(pool *, const char *, const char *);
pr_netaddr_t *pr_inet_getaddr(pool *, const char *, array_header **);
conn_t *pr_inet_copy_conn(pool *, conn_t *);
conn_t *pr_inet_create_conn(pool *, int, const pr_netaddr_t *, int, int);
conn_t *pr_inet_create_conn_portrange(pool *, const pr_netaddr_t *, int, int);
void pr_inet_close(pool *, conn_t *);
void pr_inet_lingering_abort(pool *, conn_t *, long);
void pr_inet_lingering_close(pool *, conn_t *, long);
int pr_inet_set_default_family(pool *, int);
int pr_inet_set_async(pool *, conn_t *);
int pr_inet_set_block(pool *, conn_t *);
int pr_inet_set_nonblock(pool *, conn_t *);
int pr_inet_set_proto_cork(int, int);
int pr_inet_set_proto_nodelay(pool *, conn_t *, int);
int pr_inet_set_proto_opts(pool *, conn_t *, int, int, int, int);
int pr_inet_set_socket_opts(pool *, conn_t *, int, int, struct tcp_keepalive *);
int pr_inet_listen(pool *p, conn_t *conn, int backlog, int flags);
#define PR_INET_LISTEN_FL_FATAL_ON_ERROR 0x0001
int pr_inet_resetlisten(pool *, conn_t *);
int pr_inet_accept_nowait(pool *, conn_t *);
int pr_inet_connect(pool *, conn_t *, const pr_netaddr_t *, int);
int pr_inet_connect_nowait(pool *, conn_t *, const pr_netaddr_t *, int);
int pr_inet_get_conn_info(conn_t *, int);
conn_t *pr_inet_accept(pool *, conn_t *, conn_t *, int, int, unsigned char);
conn_t *pr_inet_openrw(pool *, conn_t *, const pr_netaddr_t *, int, int, int,
int, int);
int pr_inet_generate_socket_event(const char *, server_rec *,
const pr_netaddr_t *, int);
void init_inet(void);
#endif /* PR_INET_H */
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