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/* Definitions for network-related stuff.
*
* Copyright 2007, 2008 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of the rsyslog runtime library.
*
* The rsyslog runtime library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The rsyslog runtime 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 the rsyslog runtime library. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
* A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
*/
#ifndef INCLUDED_NET_H
#define INCLUDED_NET_H
#include <netinet/in.h>
#include <sys/socket.h> /* this is needed on HP UX -- rgerhards, 2008-03-04 */
typedef enum _TCPFRAMINGMODE {
TCP_FRAMING_OCTET_STUFFING = 0, /* traditional LF-delimited */
TCP_FRAMING_OCTET_COUNTING = 1 /* -transport-tls like octet count */
} TCPFRAMINGMODE;
#define F_SET(where, flag) (where)|=(flag)
#define F_ISSET(where, flag) ((where)&(flag))==(flag)
#define F_UNSET(where, flag) (where)&=~(flag)
#define ADDR_NAME 0x01 /* address is hostname wildcard) */
#define ADDR_PRI6 0x02 /* use IPv6 address prior to IPv4 when resolving */
#ifdef OS_BSD
# ifndef _KERNEL
# define s6_addr32 __u6_addr.__u6_addr32
# endif
#endif
struct NetAddr {
uint8_t flags;
union {
struct sockaddr *NetAddr;
char *HostWildcard;
} addr;
};
#ifndef SO_BSDCOMPAT
/* this shall prevent compiler errors due to undefined name */
# define SO_BSDCOMPAT 0
#endif
/* IPv6 compatibility layer for older platforms
* We need to handle a few things different if we are running
* on an older platform which does not support all the glory
* of IPv6. We try to limit toll on features and reliability,
* but obviously it is better to run rsyslog on a platform that
* supports everything...
* rgerhards, 2007-06-22
*/
#ifndef AI_NUMERICSERV
# define AI_NUMERICSERV 0
#endif
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
#define SALEN(sa) ((sa)->sa_len)
#else
static inline size_t SALEN(struct sockaddr *sa) {
switch (sa->sa_family) {
case AF_INET: return (sizeof (struct sockaddr_in));
case AF_INET6: return (sizeof (struct sockaddr_in6));
default: return 0;
}
}
#endif
struct AllowedSenders {
struct NetAddr allowedSender; /* ip address allowed */
uint8_t SignificantBits; /* defines how many bits should be discarded (eqiv to mask) */
struct AllowedSenders *pNext;
};
/* for fingerprints and hostnames, we need to have a temporary linked list of
* permitted values. Unforutnately, we must also duplicate this in the netstream
* drivers. However, this is the best interim solution (with the least effort).
* A clean implementation requires that we have more capable variables and the
* full-fledged scripting engine available. So we have opted to do the interim
* solution so that our users can begin to enjoy authenticated TLS. The next step
* (hopefully) is to enhance RainerScript. -- rgerhards, 2008-05-19
*/
struct permittedPeers_s {
uchar *pszID;
permittedPeers_t *pNext;
};
/* interfaces */
BEGINinterface(net) /* name must also be changed in ENDinterface macro! */
rsRetVal (*cvthname)(struct sockaddr_storage *f, uchar *pszHost, uchar *pszHostFQDN, uchar *pszIP);
/* things to go away after proper modularization */
rsRetVal (*addAllowedSenderLine)(char* pName, uchar** ppRestOfConfLine);
void (*PrintAllowedSenders)(int iListToPrint);
void (*clearAllowedSenders) ();
void (*debugListenInfo)(int fd, char *type);
int *(*create_udp_socket)(uchar *hostname, uchar *LogPort, int bIsServer);
void (*closeUDPListenSockets)(int *finet);
int (*isAllowedSender)(struct AllowedSenders *pAllowRoot, struct sockaddr *pFrom, const char *pszFromHost);
rsRetVal (*getLocalHostname)(uchar**);
int (*should_use_so_bsdcompat)(void);
/* permitted peer handling should be replaced by something better (see comments above) */
rsRetVal (*AddPermittedPeer)(permittedPeers_t **ppRootPeer, uchar *pszID);
rsRetVal (*DestructPermittedPeers)(permittedPeers_t **ppRootPeer);
/* data members - these should go away over time... TODO */
int *pACLAddHostnameOnFail; /* add hostname to acl when DNS resolving has failed */
int *pACLDontResolve; /* add hostname to acl instead of resolving it to IP(s) */
struct AllowedSenders *pAllowedSenders_UDP;
struct AllowedSenders *pAllowedSenders_TCP;
struct AllowedSenders *pAllowedSenders_GSS;
ENDinterface(net)
#define netCURR_IF_VERSION 3 /* increment whenever you change the interface structure! */
/* prototypes */
PROTOTYPEObj(net);
/* the name of our library binary */
#define LM_NET_FILENAME "lmnet"
#endif /* #ifndef INCLUDED_NET_H */
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