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/*
* Copyright (c) 2002-2010 BalaBit IT Ltd, Budapest, Hungary
* Copyright (c) 1998-2010 Balázs Scheidler
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef AFSOCKET_H_INCLUDED
#define AFSOCKET_H_INCLUDED
#include "driver.h"
#include "logreader.h"
#include "logwriter.h"
#if ENABLE_SSL
#include "tlscontext.h"
#endif
#include <iv.h>
#define AFSOCKET_DGRAM 0x0001
#define AFSOCKET_STREAM 0x0002
#define AFSOCKET_LOCAL 0x0004
#define AFSOCKET_SYSLOG_PROTOCOL 0x0008
#define AFSOCKET_KEEP_ALIVE 0x0100
#define AFSOCKET_REQUIRE_TLS 0x0200
#define AFSOCKET_WNDSIZE_INITED 0x10000
typedef enum
{
AFSOCKET_DIR_RECV = 0x01,
AFSOCKET_DIR_SEND = 0x02,
} AFSocketDirection;
typedef struct _AFSocketSourceDriver AFSocketSourceDriver;
typedef struct _AFSocketDestDriver AFSocketDestDriver;
typedef struct _SocketOptions
{
gint sndbuf;
gint rcvbuf;
gint broadcast;
gint keepalive;
} SocketOptions;
gboolean afsocket_setup_socket(gint fd, SocketOptions *sock_options, AFSocketDirection dir);
struct _AFSocketSourceDriver
{
LogSrcDriver super;
guint32 flags;
struct iv_fd listen_fd;
gint fd;
LogReaderOptions reader_options;
#if ENABLE_SSL
TLSContext *tls_context;
#endif
gint address_family;
GSockAddr *bind_addr;
gchar *transport;
gint max_connections;
gint num_connections;
gint listen_backlog;
GList *connections;
SocketOptions *sock_options_ptr;
/*
* Apply transport options, set up bind_addr based on the
* information processed during parse time. This used to be
* constructed during the parser, however that made the ordering of
* various options matter and behave incorrectly when the port() was
* specified _after_ transport(). Now, it collects the information,
* and then applies them with a separate call to apply_transport()
* during init().
*/
gboolean (*apply_transport)(AFSocketSourceDriver *s);
/* optionally acquire a socket from the runtime environment (e.g. systemd) */
gboolean (*acquire_socket)(AFSocketSourceDriver *s, gint *fd);
/* once the socket is opened, set up socket related options (IP_TTL,
IP_TOS, SO_RCVBUF etc) */
gboolean (*setup_socket)(AFSocketSourceDriver *s, gint fd);
};
void afsocket_sd_set_transport(LogDriver *s, const gchar *transport);
void afsocket_sd_set_keep_alive(LogDriver *self, gint enable);
void afsocket_sd_set_max_connections(LogDriver *self, gint max_connections);
#if ENABLE_SSL
void afsocket_sd_set_tls_context(LogDriver *s, TLSContext *tls_context);
#else
#define afsocket_sd_set_tls_context(s, t)
#endif
static inline gboolean
afsocket_sd_acquire_socket(AFSocketSourceDriver *s, gint *fd)
{
if (s->acquire_socket)
return s->acquire_socket(s, fd);
*fd = -1;
return TRUE;
}
static inline gboolean
afsocket_sd_apply_transport(AFSocketSourceDriver *s)
{
return s->apply_transport(s);
}
gboolean afsocket_sd_init(LogPipe *s);
gboolean afsocket_sd_deinit(LogPipe *s);
void afsocket_sd_init_instance(AFSocketSourceDriver *self, SocketOptions *sock_options, gint family, guint32 flags);
void afsocket_sd_free(LogPipe *self);
struct _AFSocketDestDriver
{
LogDestDriver super;
guint32 flags;
gint fd;
LogPipe *writer;
LogWriterOptions writer_options;
#if ENABLE_SSL
TLSContext *tls_context;
#endif
gint address_family;
gchar *hostname;
gchar *transport;
GSockAddr *bind_addr;
GSockAddr *dest_addr;
gchar *dest_name;
gint time_reopen;
struct iv_fd connect_fd;
struct iv_timer reconnect_timer;
SocketOptions *sock_options_ptr;
/*
* Apply transport options, set up bind_addr/dest_addr based on the
* information processed during parse time. This used to be
* constructed during the parser, however that made the ordering of
* various options matter and behave incorrectly when the port() was
* specified _after_ transport(). Now, it collects the information,
* and then applies them with a separate call to apply_transport()
* during init().
*/
gboolean (*apply_transport)(AFSocketDestDriver *s);
/* once the socket is opened, set up socket related options (IP_TTL,
IP_TOS, SO_RCVBUF etc) */
gboolean (*setup_socket)(AFSocketDestDriver *s, gint fd);
};
#if ENABLE_SSL
void afsocket_dd_set_tls_context(LogDriver *s, TLSContext *tls_context);
#else
#define afsocket_dd_set_tls_context(s, t)
#endif
static inline gboolean
afsocket_dd_apply_transport(AFSocketDestDriver *s)
{
return s->apply_transport(s);
}
void afsocket_dd_set_transport(LogDriver *s, const gchar *transport);
void afsocket_dd_set_keep_alive(LogDriver *self, gint enable);
void afsocket_dd_init_instance(AFSocketDestDriver *self, SocketOptions *sock_options, gint family, const gchar *hostname, guint32 flags);
gboolean afsocket_dd_init(LogPipe *s);
void afsocket_dd_free(LogPipe *s);
#endif
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