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/*
* Copyright (C) 2004, 2005, 2007, 2008 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: net.h,v 1.30 2008/07/01 23:47:17 tbox Exp $ */
#ifndef ISC_NET_H
#define ISC_NET_H 1
/*
* Also define LWRES_IPV6_H to keep it from being included if liblwres is
* being used, or redefinition errors will occur.
*/
#define LWRES_IPV6_H 1
/*****
***** Module Info
*****/
/*
* Basic Networking Types
*
* This module is responsible for defining the following basic networking
* types:
*
* struct in_addr
* struct in6_addr
* struct in6_pktinfo
* struct sockaddr
* struct sockaddr_in
* struct sockaddr_in6
* in_port_t
*
* It ensures that the AF_ and PF_ macros are defined.
*
* It declares ntoh[sl]() and hton[sl]().
*
* It declares inet_aton(), inet_ntop(), and inet_pton().
*
* It ensures that INADDR_ANY, IN6ADDR_ANY_INIT, in6addr_any, and
* in6addr_loopback are available.
*
* It ensures that IN_MULTICAST() is available to check for multicast
* addresses.
*
* MP:
* No impact.
*
* Reliability:
* No anticipated impact.
*
* Resources:
* N/A.
*
* Security:
* No anticipated impact.
*
* Standards:
* BSD Socket API
* RFC2553
*/
/***
*** Imports.
***/
#include <isc/platform.h>
/*
* Because of some sort of problem in the MS header files, this cannot
* be simple "#include <winsock2.h>", because winsock2.h tries to include
* windows.h, which then generates an error out of mswsock.h. _You_
* figure it out.
*/
#ifndef _WINSOCKAPI_
#define _WINSOCKAPI_ /* Prevent inclusion of winsock.h in windows.h */
#endif
#include <winsock2.h>
#include <sys/types.h>
#include <isc/lang.h>
#include <isc/types.h>
#include <ws2tcpip.h>
#include <isc/ipv6.h>
/*
* This is here because named client, interfacemgr.c, etc. use the name as
* a variable
*/
#undef interface
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK 0x7f000001UL
#endif
#ifndef ISC_PLATFORM_HAVEIN6PKTINFO
struct in6_pktinfo {
struct in6_addr ipi6_addr; /* src/dst IPv6 address */
unsigned int ipi6_ifindex; /* send/recv interface index */
};
#endif
#if _MSC_VER < 1300
#define in6addr_any isc_in6addr_any
#define in6addr_loopback isc_in6addr_loopback
#endif
/*
* Ensure type in_port_t is defined.
*/
#ifdef ISC_PLATFORM_NEEDPORTT
typedef isc_uint16_t in_port_t;
#endif
/*
* If this system does not have MSG_TRUNC (as returned from recvmsg())
* ISC_PLATFORM_RECVOVERFLOW will be defined. This will enable the MSG_TRUNC
* faking code in socket.c.
*/
#ifndef MSG_TRUNC
#define ISC_PLATFORM_RECVOVERFLOW
#endif
#define ISC__IPADDR(x) ((isc_uint32_t)htonl((isc_uint32_t)(x)))
#define ISC_IPADDR_ISMULTICAST(i) \
(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
== ISC__IPADDR(0xe0000000))
#define ISC_IPADDR_ISEXPERIMENTAL(i) \
(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
== ISC__IPADDR(0xf0000000))
/*
* Fix the FD_SET and FD_CLR Macros to properly cast
*/
#undef FD_CLR
#define FD_CLR(fd, set) do { \
u_int __i; \
for (__i = 0; __i < ((fd_set FAR *)(set))->fd_count; __i++) { \
if (((fd_set FAR *)(set))->fd_array[__i] == (SOCKET) fd) { \
while (__i < ((fd_set FAR *)(set))->fd_count-1) { \
((fd_set FAR *)(set))->fd_array[__i] = \
((fd_set FAR *)(set))->fd_array[__i+1]; \
__i++; \
} \
((fd_set FAR *)(set))->fd_count--; \
break; \
} \
} \
} while (0)
#undef FD_SET
#define FD_SET(fd, set) do { \
u_int __i; \
for (__i = 0; __i < ((fd_set FAR *)(set))->fd_count; __i++) { \
if (((fd_set FAR *)(set))->fd_array[__i] == (SOCKET)(fd)) { \
break; \
} \
} \
if (__i == ((fd_set FAR *)(set))->fd_count) { \
if (((fd_set FAR *)(set))->fd_count < FD_SETSIZE) { \
((fd_set FAR *)(set))->fd_array[__i] = (SOCKET)(fd); \
((fd_set FAR *)(set))->fd_count++; \
} \
} \
} while (0)
/*
* Windows Sockets errors redefined as regular Berkeley error constants.
* These are usually commented out in Windows NT to avoid conflicts with errno.h.
* Use the WSA constants instead.
*/
#define EWOULDBLOCK WSAEWOULDBLOCK
#define EINPROGRESS WSAEINPROGRESS
#define EALREADY WSAEALREADY
#define ENOTSOCK WSAENOTSOCK
#define EDESTADDRREQ WSAEDESTADDRREQ
#define EMSGSIZE WSAEMSGSIZE
#define EPROTOTYPE WSAEPROTOTYPE
#define ENOPROTOOPT WSAENOPROTOOPT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
#define EOPNOTSUPP WSAEOPNOTSUPP
#define EPFNOSUPPORT WSAEPFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#define EADDRINUSE WSAEADDRINUSE
#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
#define ENETDOWN WSAENETDOWN
#define ENETUNREACH WSAENETUNREACH
#define ENETRESET WSAENETRESET
#define ECONNABORTED WSAECONNABORTED
#define ECONNRESET WSAECONNRESET
#define ENOBUFS WSAENOBUFS
#define EISCONN WSAEISCONN
#define ENOTCONN WSAENOTCONN
#define ESHUTDOWN WSAESHUTDOWN
#define ETOOMANYREFS WSAETOOMANYREFS
#define ETIMEDOUT WSAETIMEDOUT
#define ECONNREFUSED WSAECONNREFUSED
#define ELOOP WSAELOOP
#define EHOSTDOWN WSAEHOSTDOWN
#define EHOSTUNREACH WSAEHOSTUNREACH
#define EPROCLIM WSAEPROCLIM
#define EUSERS WSAEUSERS
#define EDQUOT WSAEDQUOT
#define ESTALE WSAESTALE
#define EREMOTE WSAEREMOTE
/***
*** Functions.
***/
ISC_LANG_BEGINDECLS
isc_result_t
isc_net_probeipv4(void);
/*
* Check if the system's kernel supports IPv4.
*
* Returns:
*
* ISC_R_SUCCESS IPv4 is supported.
* ISC_R_NOTFOUND IPv4 is not supported.
* ISC_R_DISABLED IPv4 is disabled.
* ISC_R_UNEXPECTED
*/
isc_result_t
isc_net_probeipv6(void);
/*
* Check if the system's kernel supports IPv6.
*
* Returns:
*
* ISC_R_SUCCESS IPv6 is supported.
* ISC_R_NOTFOUND IPv6 is not supported.
* ISC_R_DISABLED IPv6 is disabled.
* ISC_R_UNEXPECTED
*/
isc_result_t
isc_net_probeunix(void);
/*
* Check if UNIX domain sockets are supported.
*
* Returns:
*
* ISC_R_SUCCESS
* ISC_R_NOTFOUND
*/
isc_result_t
isc_net_probe_ipv6only(void);
/*
* Check if the system's kernel supports the IPV6_V6ONLY socket option.
*
* Returns:
*
* ISC_R_SUCCESS the option is supported for both TCP and UDP.
* ISC_R_NOTFOUND IPv6 itself or the option is not supported.
* ISC_R_UNEXPECTED
*/
isc_result_t
isc_net_probe_ipv6pktinfo(void);
/*
* Check if the system's kernel supports the IPV6_(RECV)PKTINFO socket option
* for UDP sockets.
*
* Returns:
*
* ISC_R_SUCCESS the option is supported.
* ISC_R_NOTFOUND IPv6 itself or the option is not supported.
* ISC_R_UNEXPECTED
*/
void
isc_net_disableipv4(void);
void
isc_net_disableipv6(void);
void
isc_net_enableipv4(void);
void
isc_net_enableipv6(void);
isc_result_t
isc_net_getudpportrange(int af, in_port_t *low, in_port_t *high);
/*%<
* Returns system's default range of ephemeral UDP ports, if defined.
* If the range is not available or unknown, ISC_NET_PORTRANGELOW and
* ISC_NET_PORTRANGEHIGH will be returned.
*
* Requires:
*
*\li 'low' and 'high' must be non NULL.
*
* Returns:
*
*\li *low and *high will be the ports specifying the low and high ends of
* the range.
*/
#ifdef ISC_PLATFORM_NEEDNTOP
const char *
isc_net_ntop(int af, const void *src, char *dst, size_t size);
#define inet_ntop isc_net_ntop
#endif
#ifdef ISC_PLATFORM_NEEDPTON
int
isc_net_pton(int af, const char *src, void *dst);
#define inet_pton isc_net_pton
#endif
#ifdef ISC_PLATFORM_NEEDATON
int
isc_net_aton(const char *cp, struct in_addr *addr);
#define inet_aton isc_net_aton
#endif
ISC_LANG_ENDDECLS
#endif /* ISC_NET_H */
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