/* * Copyright (C) 2004, 2005, 2007-2009 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 1.30.82.2 2009/02/16 23:47:15 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_net_in6addrany #define in6addr_loopback isc_net_in6addrloop #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 int isc_net_aton(const char *cp, struct in_addr *addr); #define inet_aton isc_net_aton ISC_LANG_ENDDECLS #endif /* ISC_NET_H */