mirror of
https://github.com/isc-projects/bind9.git
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344 lines
8.4 KiB
C
344 lines
8.4 KiB
C
/*
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* Copyright (C) 2004, 2005, 2007, 2008, 2012 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2003 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id$ */
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#ifndef ISC_NET_H
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#define ISC_NET_H 1
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/*
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* Also define LWRES_IPV6_H to keep it from being included if liblwres is
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* being used, or redefinition errors will occur.
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*/
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#define LWRES_IPV6_H 1
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/*****
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***** Module Info
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*****/
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/*
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* Basic Networking Types
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*
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* This module is responsible for defining the following basic networking
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* types:
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*
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* struct in_addr
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* struct in6_addr
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* struct in6_pktinfo
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* struct sockaddr
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* struct sockaddr_in
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* struct sockaddr_in6
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* in_port_t
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*
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* It ensures that the AF_ and PF_ macros are defined.
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*
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* It declares ntoh[sl]() and hton[sl]().
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*
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* It declares inet_aton(), inet_ntop(), and inet_pton().
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*
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* It ensures that INADDR_ANY, IN6ADDR_ANY_INIT, in6addr_any, and
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* in6addr_loopback are available.
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*
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* It ensures that IN_MULTICAST() is available to check for multicast
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* addresses.
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*
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* MP:
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* No impact.
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*
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* Reliability:
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* No anticipated impact.
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*
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* Resources:
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* N/A.
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*
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* Security:
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* No anticipated impact.
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*
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* Standards:
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* BSD Socket API
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* RFC2553
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*/
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/***
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*** Imports.
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***/
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#include <isc/platform.h>
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/*
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* Because of some sort of problem in the MS header files, this cannot
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* be simple "#include <winsock2.h>", because winsock2.h tries to include
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* windows.h, which then generates an error out of mswsock.h. _You_
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* figure it out.
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*/
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#ifndef _WINSOCKAPI_
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#define _WINSOCKAPI_ /* Prevent inclusion of winsock.h in windows.h */
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#endif
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#include <winsock2.h>
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#include <sys/types.h>
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#include <isc/lang.h>
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#include <isc/types.h>
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#include <ws2tcpip.h>
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#include <isc/ipv6.h>
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/*
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* This is here because named client, interfacemgr.c, etc. use the name as
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* a variable
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*/
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#undef interface
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#ifndef INADDR_LOOPBACK
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#define INADDR_LOOPBACK 0x7f000001UL
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#endif
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#ifndef ISC_PLATFORM_HAVEIN6PKTINFO
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struct in6_pktinfo {
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struct in6_addr ipi6_addr; /* src/dst IPv6 address */
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unsigned int ipi6_ifindex; /* send/recv interface index */
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};
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#endif
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#if _MSC_VER < 1300
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#define in6addr_any isc_in6addr_any
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#define in6addr_loopback isc_in6addr_loopback
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#endif
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/*
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* Ensure type in_port_t is defined.
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*/
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#ifdef ISC_PLATFORM_NEEDPORTT
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typedef isc_uint16_t in_port_t;
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#endif
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/*
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* If this system does not have MSG_TRUNC (as returned from recvmsg())
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* ISC_PLATFORM_RECVOVERFLOW will be defined. This will enable the MSG_TRUNC
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* faking code in socket.c.
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*/
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#ifndef MSG_TRUNC
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#define ISC_PLATFORM_RECVOVERFLOW
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#endif
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#define ISC__IPADDR(x) ((isc_uint32_t)htonl((isc_uint32_t)(x)))
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#define ISC_IPADDR_ISMULTICAST(i) \
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(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
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== ISC__IPADDR(0xe0000000))
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#define ISC_IPADDR_ISEXPERIMENTAL(i) \
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(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
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== ISC__IPADDR(0xf0000000))
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/*
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* Fix the FD_SET and FD_CLR Macros to properly cast
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*/
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#undef FD_CLR
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#define FD_CLR(fd, set) do { \
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u_int __i; \
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for (__i = 0; __i < ((fd_set FAR *)(set))->fd_count; __i++) { \
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if (((fd_set FAR *)(set))->fd_array[__i] == (SOCKET) fd) { \
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while (__i < ((fd_set FAR *)(set))->fd_count-1) { \
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((fd_set FAR *)(set))->fd_array[__i] = \
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((fd_set FAR *)(set))->fd_array[__i+1]; \
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__i++; \
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} \
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((fd_set FAR *)(set))->fd_count--; \
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break; \
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} \
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} \
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} while (0)
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#undef FD_SET
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#define FD_SET(fd, set) do { \
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u_int __i; \
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for (__i = 0; __i < ((fd_set FAR *)(set))->fd_count; __i++) { \
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if (((fd_set FAR *)(set))->fd_array[__i] == (SOCKET)(fd)) { \
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break; \
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} \
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} \
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if (__i == ((fd_set FAR *)(set))->fd_count) { \
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if (((fd_set FAR *)(set))->fd_count < FD_SETSIZE) { \
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((fd_set FAR *)(set))->fd_array[__i] = (SOCKET)(fd); \
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((fd_set FAR *)(set))->fd_count++; \
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} \
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} \
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} while (0)
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/*
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* Windows Sockets errors redefined as regular Berkeley error constants.
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* These are usually commented out in Windows NT to avoid conflicts with errno.h.
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* Use the WSA constants instead.
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*/
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#define EWOULDBLOCK WSAEWOULDBLOCK
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#define EINPROGRESS WSAEINPROGRESS
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#define EALREADY WSAEALREADY
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#define ENOTSOCK WSAENOTSOCK
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#define EDESTADDRREQ WSAEDESTADDRREQ
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#define EMSGSIZE WSAEMSGSIZE
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#define EPROTOTYPE WSAEPROTOTYPE
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#define ENOPROTOOPT WSAENOPROTOOPT
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#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
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#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
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#define EOPNOTSUPP WSAEOPNOTSUPP
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#define EPFNOSUPPORT WSAEPFNOSUPPORT
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#define EAFNOSUPPORT WSAEAFNOSUPPORT
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#define EADDRINUSE WSAEADDRINUSE
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#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
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#define ENETDOWN WSAENETDOWN
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#define ENETUNREACH WSAENETUNREACH
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#define ENETRESET WSAENETRESET
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#define ECONNABORTED WSAECONNABORTED
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#define ECONNRESET WSAECONNRESET
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#define ENOBUFS WSAENOBUFS
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#define EISCONN WSAEISCONN
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#define ENOTCONN WSAENOTCONN
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#define ESHUTDOWN WSAESHUTDOWN
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#define ETOOMANYREFS WSAETOOMANYREFS
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#define ETIMEDOUT WSAETIMEDOUT
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#define ECONNREFUSED WSAECONNREFUSED
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#define ELOOP WSAELOOP
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#define EHOSTDOWN WSAEHOSTDOWN
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#define EHOSTUNREACH WSAEHOSTUNREACH
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#define EPROCLIM WSAEPROCLIM
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#define EUSERS WSAEUSERS
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#define EDQUOT WSAEDQUOT
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#define ESTALE WSAESTALE
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#define EREMOTE WSAEREMOTE
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/***
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*** Functions.
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***/
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ISC_LANG_BEGINDECLS
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isc_result_t
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isc_net_probeipv4(void);
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/*
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* Check if the system's kernel supports IPv4.
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*
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* Returns:
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*
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* ISC_R_SUCCESS IPv4 is supported.
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* ISC_R_NOTFOUND IPv4 is not supported.
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* ISC_R_DISABLED IPv4 is disabled.
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* ISC_R_UNEXPECTED
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*/
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isc_result_t
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isc_net_probeipv6(void);
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/*
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* Check if the system's kernel supports IPv6.
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*
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* Returns:
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*
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* ISC_R_SUCCESS IPv6 is supported.
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* ISC_R_NOTFOUND IPv6 is not supported.
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* ISC_R_DISABLED IPv6 is disabled.
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* ISC_R_UNEXPECTED
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*/
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isc_result_t
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isc_net_probeunix(void);
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/*
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* Check if UNIX domain sockets are supported.
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*
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* Returns:
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*
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* ISC_R_SUCCESS
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* ISC_R_NOTFOUND
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*/
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isc_result_t
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isc_net_probe_ipv6only(void);
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/*
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* Check if the system's kernel supports the IPV6_V6ONLY socket option.
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*
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* Returns:
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*
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* ISC_R_SUCCESS the option is supported for both TCP and UDP.
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* ISC_R_NOTFOUND IPv6 itself or the option is not supported.
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* ISC_R_UNEXPECTED
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*/
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isc_result_t
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isc_net_probe_ipv6pktinfo(void);
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/*
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* Check if the system's kernel supports the IPV6_(RECV)PKTINFO socket option
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* for UDP sockets.
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*
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* Returns:
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*
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* ISC_R_SUCCESS the option is supported.
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* ISC_R_NOTFOUND IPv6 itself or the option is not supported.
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* ISC_R_UNEXPECTED
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*/
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void
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isc_net_disableipv4(void);
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void
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isc_net_disableipv6(void);
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void
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isc_net_enableipv4(void);
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void
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isc_net_enableipv6(void);
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isc_result_t
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isc_net_getudpportrange(int af, in_port_t *low, in_port_t *high);
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/*%<
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* Returns system's default range of ephemeral UDP ports, if defined.
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* If the range is not available or unknown, ISC_NET_PORTRANGELOW and
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* ISC_NET_PORTRANGEHIGH will be returned.
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*
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* Requires:
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*
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*\li 'low' and 'high' must be non NULL.
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*
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* Returns:
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*
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*\li *low and *high will be the ports specifying the low and high ends of
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* the range.
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*/
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#ifdef ISC_PLATFORM_NEEDNTOP
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const char *
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isc_net_ntop(int af, const void *src, char *dst, size_t size);
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#define inet_ntop isc_net_ntop
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#endif
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#ifdef ISC_PLATFORM_NEEDPTON
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int
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isc_net_pton(int af, const char *src, void *dst);
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#define inet_pton isc_net_pton
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#endif
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int
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isc_net_aton(const char *cp, struct in_addr *addr);
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#define inet_aton isc_net_aton
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ISC_LANG_ENDDECLS
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#endif /* ISC_NET_H */
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