/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019, 2020 * Jonathan Schleifer <js@nil.im> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #ifdef OF_NINTENDO_3DS # include <malloc.h> /* For memalign() */ #endif #include <errno.h> #import "OFArray.h" #import "OFCharacterSet.h" #import "OFLocale.h" #import "OFString.h" #import "OFException.h" /* For some E* -> WSAE* defines */ #import "OFInitializationFailedException.h" #import "OFInvalidArgumentException.h" #import "OFInvalidFormatException.h" #import "OFLockFailedException.h" #import "OFUnlockFailedException.h" #import "socket.h" #import "socket_helpers.h" #ifdef OF_HAVE_THREADS # if !defined(OF_AMIGAOS) || defined(OF_MORPHOS) # import "mutex.h" # else # import "tlskey.h" # endif #endif #import "once.h" #ifdef OF_AMIGAOS # include <proto/exec.h> #endif #ifdef OF_NINTENDO_3DS # include <3ds/types.h> # include <3ds/services/soc.h> #endif #if defined(OF_HAVE_THREADS) && (!defined(OF_AMIGAOS) || defined(OF_MORPHOS)) static of_mutex_t mutex; #endif #if !defined(OF_AMIGAOS) || defined(OF_MORPHOS) || !defined(OF_HAVE_THREADS) static bool initSuccessful = false; #endif #ifdef OF_AMIGAOS # if defined(OF_HAVE_THREADS) && !defined(OF_MORPHOS) of_tlskey_t of_socket_base_key; # ifdef OF_AMIGAOS4 of_tlskey_t of_socket_interface_key; # endif # else struct Library *SocketBase; # ifdef OF_AMIGAOS4 struct SocketIFace *ISocket = NULL; # endif # endif #endif #if defined(OF_HAVE_THREADS) && defined(OF_AMIGAOS) && !defined(OF_MORPHOS) OF_CONSTRUCTOR() { if (of_tlskey_new(&of_socket_base_key) != 0) @throw [OFInitializationFailedException exception]; # ifdef OF_AMIGAOS4 if (of_tlskey_new(&of_socket_interface_key) != 0) @throw [OFInitializationFailedException exception]; # endif } #endif #if !defined(OF_AMIGAOS) || defined(OF_MORPHOS) || !defined(OF_HAVE_THREADS) static void init(void) { # if defined(OF_WINDOWS) WSADATA wsa; if (WSAStartup(MAKEWORD(2, 0), &wsa)) return; # elif defined(OF_AMIGAOS) if ((SocketBase = OpenLibrary("bsdsocket.library", 4)) == NULL) return; # ifdef OF_AMIGAOS4 if ((ISocket = (struct SocketIFace *) GetInterface(SocketBase, "main", 1, NULL)) == NULL) { CloseLibrary(SocketBase); return; } # endif # elif defined(OF_WII) if (net_init() < 0) return; # elif defined(OF_NINTENDO_3DS) void *ctx; if ((ctx = memalign(0x1000, 0x100000)) == NULL) return; if (socInit(ctx, 0x100000) != 0) return; atexit((void (*)(void))socExit); # endif # if defined(OF_HAVE_THREADS) && (!defined(OF_AMIGAOS) || defined(OF_MORPHOS)) if (of_mutex_new(&mutex) != 0) return; # ifdef OF_WII if (of_spinlock_new(&spinlock) != 0) return; # endif # endif initSuccessful = true; } # ifdef OF_AMIGAOS OF_DESTRUCTOR() { # ifdef OF_AMIGAOS4 if (ISocket != NULL) DropInterface((struct Interface *)ISocket); # endif if (SocketBase != NULL) CloseLibrary(SocketBase); } # endif #endif bool of_socket_init(void) { #if !defined(OF_AMIGAOS) || defined(OF_MORPHOS) || !defined(OF_HAVE_THREADS) static of_once_t onceControl = OF_ONCE_INIT; of_once(&onceControl, init); return initSuccessful; #else struct Library *socketBase; # ifdef OF_AMIGAOS4 struct SocketIFace *socketInterface; # endif # ifdef OF_AMIGAOS4 if ((socketInterface = of_tlskey_get(of_socket_interface_key)) != NULL) # else if ((socketBase = of_tlskey_get(of_socket_base_key)) != NULL) # endif return true; if ((socketBase = OpenLibrary("bsdsocket.library", 4)) == NULL) return false; # ifdef OF_AMIGAOS4 if ((socketInterface = (struct SocketIFace *) GetInterface(socketBase, "main", 1, NULL)) == NULL) { CloseLibrary(socketBase); return false; } # endif if (of_tlskey_set(of_socket_base_key, socketBase) != 0) { CloseLibrary(socketBase); # ifdef OF_AMIGAOS4 DropInterface((struct Interface *)socketInterface); # endif return false; } # ifdef OF_AMIGAOS4 if (of_tlskey_set(of_socket_interface_key, socketInterface) != 0) { CloseLibrary(socketBase); DropInterface((struct Interface *)socketInterface); return false; } # endif return true; #endif } #if defined(OF_HAVE_THREADS) && defined(OF_AMIGAOS) && !defined(OF_MORPHOS) void of_socket_deinit(void) { struct Library *socketBase = of_tlskey_get(of_socket_base_key); # ifdef OF_AMIGAOS4 struct SocketIFace *socketInterface = of_tlskey_get(of_socket_interface_key); if (socketInterface != NULL) DropInterface((struct Interface *)socketInterface); # endif if (socketBase != NULL) CloseLibrary(socketBase); } #endif int of_socket_errno() { #if defined(OF_WINDOWS) switch (WSAGetLastError()) { case WSAEACCES: return EACCES; case WSAEADDRINUSE: return EADDRINUSE; case WSAEADDRNOTAVAIL: return EADDRNOTAVAIL; case WSAEAFNOSUPPORT: return EAFNOSUPPORT; case WSAEALREADY: return EALREADY; case WSAEBADF: return EBADF; case WSAECONNABORTED: return ECONNABORTED; case WSAECONNREFUSED: return ECONNREFUSED; case WSAECONNRESET: return ECONNRESET; case WSAEDESTADDRREQ: return EDESTADDRREQ; case WSAEDISCON: return EPIPE; case WSAEDQUOT: return EDQUOT; case WSAEFAULT: return EFAULT; case WSAEHOSTDOWN: return EHOSTDOWN; case WSAEHOSTUNREACH: return EHOSTUNREACH; case WSAEINPROGRESS: return EINPROGRESS; case WSAEINTR: return EINTR; case WSAEINVAL: return EINVAL; case WSAEISCONN: return EISCONN; case WSAELOOP: return ELOOP; case WSAEMSGSIZE: return EMSGSIZE; case WSAENAMETOOLONG: return ENAMETOOLONG; case WSAENETDOWN: return ENETDOWN; case WSAENETRESET: return ENETRESET; case WSAENETUNREACH: return ENETUNREACH; case WSAENOBUFS: return ENOBUFS; case WSAENOPROTOOPT: return ENOPROTOOPT; case WSAENOTCONN: return ENOTCONN; case WSAENOTEMPTY: return ENOTEMPTY; case WSAENOTSOCK: return ENOTSOCK; case WSAEOPNOTSUPP: return EOPNOTSUPP; case WSAEPFNOSUPPORT: return EPFNOSUPPORT; case WSAEPROCLIM: return EPROCLIM; case WSAEPROTONOSUPPORT: return EPROTONOSUPPORT; case WSAEPROTOTYPE: return EPROTOTYPE; case WSAEREMOTE: return EREMOTE; case WSAESHUTDOWN: return ESHUTDOWN; case WSAESOCKTNOSUPPORT: return ESOCKTNOSUPPORT; case WSAESTALE: return ESTALE; case WSAETIMEDOUT: return ETIMEDOUT; case WSAETOOMANYREFS: return ETOOMANYREFS; case WSAEUSERS: return EUSERS; case WSAEWOULDBLOCK: return EWOULDBLOCK; } return 0; #elif defined(OF_AMIGAOS) return Errno(); #else return errno; #endif } #ifndef OF_WII int of_getsockname(of_socket_t sock, struct sockaddr *restrict addr, socklen_t *restrict addrLen) { int ret; # if defined(OF_HAVE_THREADS) && (!defined(OF_AMIGAOS) || defined(OF_MORPHOS)) if (of_mutex_lock(&mutex) != 0) @throw [OFLockFailedException exception]; # endif ret = getsockname(sock, addr, addrLen); # if defined(OF_HAVE_THREADS) && (!defined(OF_AMIGAOS) || defined(OF_MORPHOS)) if (of_mutex_unlock(&mutex) != 0) @throw [OFUnlockFailedException exception]; # endif return ret; } #endif of_socket_address_t of_socket_address_parse_ipv4(OFString *IPv4, uint16_t port) { void *pool = objc_autoreleasePoolPush(); OFCharacterSet *whitespaceCharacterSet = [OFCharacterSet whitespaceCharacterSet]; of_socket_address_t ret; struct sockaddr_in *addrIn = &ret.sockaddr.in; OFArray OF_GENERIC(OFString *) *components; uint32_t addr; memset(&ret, '\0', sizeof(ret)); ret.family = OF_SOCKET_ADDRESS_FAMILY_IPV4; #if defined(OF_WII) || defined(OF_NINTENDO_3DS) ret.length = 8; #else ret.length = sizeof(ret.sockaddr.in); #endif addrIn->sin_family = AF_INET; addrIn->sin_port = OF_BSWAP16_IF_LE(port); #ifdef OF_WII addrIn->sin_len = ret.length; #endif components = [IPv4 componentsSeparatedByString: @"."]; if (components.count != 4) @throw [OFInvalidFormatException exception]; addr = 0; for (OFString *component in components) { unsigned long long number; if (component.length == 0) @throw [OFInvalidFormatException exception]; if ([component indexOfCharacterFromSet: whitespaceCharacterSet] != OF_NOT_FOUND) @throw [OFInvalidFormatException exception]; number = component.unsignedLongLongValue; if (number > UINT8_MAX) @throw [OFInvalidFormatException exception]; addr = (addr << 8) | ((uint32_t)number & 0xFF); } addrIn->sin_addr.s_addr = OF_BSWAP32_IF_LE(addr); objc_autoreleasePoolPop(pool); return ret; } static uint16_t parseIPv6Component(OFString *component) { unsigned long long number; if ([component indexOfCharacterFromSet: [OFCharacterSet whitespaceCharacterSet]] != OF_NOT_FOUND) @throw [OFInvalidFormatException exception]; number = [component unsignedLongLongValueWithBase: 16]; if (number > UINT16_MAX) @throw [OFInvalidFormatException exception]; return (uint16_t)number; } of_socket_address_t of_socket_address_parse_ipv6(OFString *IPv6, uint16_t port) { void *pool = objc_autoreleasePoolPush(); of_socket_address_t ret; struct sockaddr_in6 *addrIn6 = &ret.sockaddr.in6; size_t doubleColon; memset(&ret, '\0', sizeof(ret)); ret.family = OF_SOCKET_ADDRESS_FAMILY_IPV6; ret.length = sizeof(ret.sockaddr.in6); #ifdef AF_INET6 addrIn6->sin6_family = AF_INET6; #else addrIn6->sin6_family = AF_UNSPEC; #endif addrIn6->sin6_port = OF_BSWAP16_IF_LE(port); doubleColon = [IPv6 rangeOfString: @"::"].location; if (doubleColon != OF_NOT_FOUND) { OFString *left = [IPv6 substringToIndex: doubleColon]; OFString *right = [IPv6 substringFromIndex: doubleColon + 2]; OFArray OF_GENERIC(OFString *) *leftComponents; OFArray OF_GENERIC(OFString *) *rightComponents; size_t i; if ([right hasPrefix: @":"] || [right containsString: @"::"]) @throw [OFInvalidFormatException exception]; leftComponents = [left componentsSeparatedByString: @":"]; rightComponents = [right componentsSeparatedByString: @":"]; if (leftComponents.count + rightComponents.count > 7) @throw [OFInvalidFormatException exception]; i = 0; for (OFString *component in leftComponents) { uint16_t number = parseIPv6Component(component); addrIn6->sin6_addr.s6_addr[i++] = number >> 8; addrIn6->sin6_addr.s6_addr[i++] = number; } i = 16; for (OFString *component in rightComponents.reversedArray) { uint16_t number = parseIPv6Component(component); addrIn6->sin6_addr.s6_addr[--i] = number; addrIn6->sin6_addr.s6_addr[--i] = number >> 8; } } else { OFArray OF_GENERIC(OFString *) *components = [IPv6 componentsSeparatedByString: @":"]; size_t i; if (components.count != 8) @throw [OFInvalidFormatException exception]; i = 0; for (OFString *component in components) { uint16_t number; if (component.length == 0) @throw [OFInvalidFormatException exception]; number = parseIPv6Component(component); addrIn6->sin6_addr.s6_addr[i++] = number >> 8; addrIn6->sin6_addr.s6_addr[i++] = number; } } objc_autoreleasePoolPop(pool); return ret; } of_socket_address_t of_socket_address_parse_ip(OFString *IP, uint16_t port) { of_socket_address_t ret; @try { ret = of_socket_address_parse_ipv6(IP, port); } @catch (OFInvalidFormatException *e) { ret = of_socket_address_parse_ipv4(IP, port); } return ret; } of_socket_address_t of_socket_address_ipx(const unsigned char node[IPX_NODE_LEN], uint32_t network, uint16_t port) { of_socket_address_t ret; memset(&ret, '\0', sizeof(ret)); ret.family = OF_SOCKET_ADDRESS_FAMILY_IPX; ret.length = sizeof(ret.sockaddr.ipx); #ifdef AF_IPX ret.sockaddr.ipx.sipx_family = AF_IPX; #else ret.sockaddr.ipx.sipx_family = AF_UNSPEC; #endif memcpy(ret.sockaddr.ipx.sipx_node, node, IPX_NODE_LEN); network = OF_BSWAP32_IF_LE(network); memcpy(&ret.sockaddr.ipx.sipx_network, &network, sizeof(ret.sockaddr.ipx.sipx_network)); ret.sockaddr.ipx.sipx_port = OF_BSWAP16_IF_LE(port); return ret; } bool of_socket_address_equal(const of_socket_address_t *address1, const of_socket_address_t *address2) { const struct sockaddr_in *addrIn1, *addrIn2; const struct sockaddr_in6 *addrIn6_1, *addrIn6_2; const struct sockaddr_ipx *addrIPX1, *addrIPX2; if (address1->family != address2->family) return false; switch (address1->family) { case OF_SOCKET_ADDRESS_FAMILY_IPV4: #if defined(OF_WII) || defined(OF_NINTENDO_3DS) if (address1->length < 8 || address2->length < 8) @throw [OFInvalidArgumentException exception]; #else if (address1->length < (socklen_t)sizeof(struct sockaddr_in) || address2->length < (socklen_t)sizeof(struct sockaddr_in)) @throw [OFInvalidArgumentException exception]; #endif addrIn1 = &address1->sockaddr.in; addrIn2 = &address2->sockaddr.in; if (addrIn1->sin_port != addrIn2->sin_port) return false; if (addrIn1->sin_addr.s_addr != addrIn2->sin_addr.s_addr) return false; break; case OF_SOCKET_ADDRESS_FAMILY_IPV6: if (address1->length < (socklen_t)sizeof(struct sockaddr_in6) || address2->length < (socklen_t)sizeof(struct sockaddr_in6)) @throw [OFInvalidArgumentException exception]; addrIn6_1 = &address1->sockaddr.in6; addrIn6_2 = &address2->sockaddr.in6; if (addrIn6_1->sin6_port != addrIn6_2->sin6_port) return false; if (memcmp(addrIn6_1->sin6_addr.s6_addr, addrIn6_2->sin6_addr.s6_addr, sizeof(addrIn6_1->sin6_addr.s6_addr)) != 0) return false; break; case OF_SOCKET_ADDRESS_FAMILY_IPX: if (address1->length < (socklen_t)sizeof(struct sockaddr_ipx) || address2->length < (socklen_t)sizeof(struct sockaddr_ipx)) @throw [OFInvalidArgumentException exception]; addrIPX1 = &address1->sockaddr.ipx; addrIPX2 = &address2->sockaddr.ipx; if (addrIPX1->sipx_port != addrIPX2->sipx_port) return false; if (memcmp(&addrIPX1->sipx_network, &addrIPX2->sipx_network, 4) != 0) return false; if (memcmp(addrIPX1->sipx_node, addrIPX2->sipx_node, IPX_NODE_LEN) != 0) return false; break; default: @throw [OFInvalidArgumentException exception]; } return true; } unsigned long of_socket_address_hash(const of_socket_address_t *address) { uint32_t hash; OF_HASH_INIT(hash); OF_HASH_ADD(hash, address->family); switch (address->family) { case OF_SOCKET_ADDRESS_FAMILY_IPV4: #if defined(OF_WII) || defined(OF_NINTENDO_3DS) if (address->length < 8) @throw [OFInvalidArgumentException exception]; #else if (address->length < (socklen_t)sizeof(struct sockaddr_in)) @throw [OFInvalidArgumentException exception]; #endif OF_HASH_ADD(hash, address->sockaddr.in.sin_port >> 8); OF_HASH_ADD(hash, address->sockaddr.in.sin_port); OF_HASH_ADD(hash, address->sockaddr.in.sin_addr.s_addr >> 24); OF_HASH_ADD(hash, address->sockaddr.in.sin_addr.s_addr >> 16); OF_HASH_ADD(hash, address->sockaddr.in.sin_addr.s_addr >> 8); OF_HASH_ADD(hash, address->sockaddr.in.sin_addr.s_addr); break; case OF_SOCKET_ADDRESS_FAMILY_IPV6: if (address->length < (socklen_t)sizeof(struct sockaddr_in6)) @throw [OFInvalidArgumentException exception]; OF_HASH_ADD(hash, address->sockaddr.in6.sin6_port >> 8); OF_HASH_ADD(hash, address->sockaddr.in6.sin6_port); for (size_t i = 0; i < sizeof(address->sockaddr.in6.sin6_addr.s6_addr); i++) OF_HASH_ADD(hash, address->sockaddr.in6.sin6_addr.s6_addr[i]); break; case OF_SOCKET_ADDRESS_FAMILY_IPX:; unsigned char network[ sizeof(address->sockaddr.ipx.sipx_network)]; if (address->length < (socklen_t)sizeof(struct sockaddr_ipx)) @throw [OFInvalidArgumentException exception]; OF_HASH_ADD(hash, address->sockaddr.ipx.sipx_port >> 8); OF_HASH_ADD(hash, address->sockaddr.ipx.sipx_port); memcpy(network, &address->sockaddr.ipx.sipx_network, sizeof(network)); for (size_t i = 0; i < sizeof(network); i++) OF_HASH_ADD(hash, network[i]); for (size_t i = 0; i < IPX_NODE_LEN; i++) OF_HASH_ADD(hash, address->sockaddr.ipx.sipx_node[i]); break; default: @throw [OFInvalidArgumentException exception]; } OF_HASH_FINALIZE(hash); return hash; } static OFString * IPv4String(const of_socket_address_t *address, uint16_t *port) { const struct sockaddr_in *addrIn = &address->sockaddr.in; uint32_t addr = OF_BSWAP32_IF_LE(addrIn->sin_addr.s_addr); OFString *string; string = [OFString stringWithFormat: @"%u.%u.%u.%u", (addr & 0xFF000000) >> 24, (addr & 0x00FF0000) >> 16, (addr & 0x0000FF00) >> 8, addr & 0x000000FF]; if (port != NULL) *port = OF_BSWAP16_IF_LE(addrIn->sin_port); return string; } static OFString * IPv6String(const of_socket_address_t *address, uint16_t *port) { OFMutableString *string = [OFMutableString string]; const struct sockaddr_in6 *addrIn6 = &address->sockaddr.in6; int_fast8_t zerosStart = -1, maxZerosStart = -1; uint_fast8_t zerosCount = 0, maxZerosCount = 0; bool first = true; for (uint_fast8_t i = 0; i < 16; i += 2) { if (addrIn6->sin6_addr.s6_addr[i] == 0 && addrIn6->sin6_addr.s6_addr[i + 1] == 0) { if (zerosStart >= 0) zerosCount++; else { zerosStart = i; zerosCount = 1; } } else { if (zerosCount > maxZerosCount) { maxZerosStart = zerosStart; maxZerosCount = zerosCount; } zerosStart = -1; } } if (zerosCount > maxZerosCount) { maxZerosStart = zerosStart; maxZerosCount = zerosCount; } if (maxZerosCount >= 2) { for (int_fast8_t i = 0; i < maxZerosStart; i += 2) { [string appendFormat: (first ? @"%x" : @":%x"), (addrIn6->sin6_addr.s6_addr[(uint_fast8_t)i] << 8) | addrIn6->sin6_addr.s6_addr[(uint_fast8_t)i + 1]]; first = false; } [string appendString: @"::"]; first = true; for (int_fast8_t i = maxZerosStart + (maxZerosCount * 2); i < 16; i += 2) { [string appendFormat: (first ? @"%x" : @":%x"), (addrIn6->sin6_addr.s6_addr[(uint_fast8_t)i] << 8) | addrIn6->sin6_addr.s6_addr[(uint_fast8_t)i + 1]]; first = false; } } else { for (uint_fast8_t i = 0; i < 16; i += 2) { [string appendFormat: (first ? @"%x" : @":%x"), (addrIn6->sin6_addr.s6_addr[i] << 8) | addrIn6->sin6_addr.s6_addr[i + 1]]; first = false; } } [string makeImmutable]; if (port != NULL) *port = OF_BSWAP16_IF_LE(addrIn6->sin6_port); return string; } OFString * of_socket_address_ip_string(const of_socket_address_t *address, uint16_t *port) { switch (address->family) { case OF_SOCKET_ADDRESS_FAMILY_IPV4: return IPv4String(address, port); case OF_SOCKET_ADDRESS_FAMILY_IPV6: return IPv6String(address, port); default: @throw [OFInvalidArgumentException exception]; } } void of_socket_address_set_port(of_socket_address_t *address, uint16_t port) { switch (address->family) { case OF_SOCKET_ADDRESS_FAMILY_IPV4: address->sockaddr.in.sin_port = OF_BSWAP16_IF_LE(port); break; case OF_SOCKET_ADDRESS_FAMILY_IPV6: address->sockaddr.in6.sin6_port = OF_BSWAP16_IF_LE(port); break; case OF_SOCKET_ADDRESS_FAMILY_IPX: address->sockaddr.ipx.sipx_port = OF_BSWAP16_IF_LE(port); break; default: @throw [OFInvalidArgumentException exception]; } } uint16_t of_socket_address_get_port(const of_socket_address_t *address) { switch (address->family) { case OF_SOCKET_ADDRESS_FAMILY_IPV4: return OF_BSWAP16_IF_LE(address->sockaddr.in.sin_port); case OF_SOCKET_ADDRESS_FAMILY_IPV6: return OF_BSWAP16_IF_LE(address->sockaddr.in6.sin6_port); case OF_SOCKET_ADDRESS_FAMILY_IPX: return OF_BSWAP16_IF_LE(address->sockaddr.ipx.sipx_port); default: @throw [OFInvalidArgumentException exception]; } } void of_socket_address_set_ipx_network(of_socket_address_t *address, uint32_t network) { if (address->family != OF_SOCKET_ADDRESS_FAMILY_IPX) @throw [OFInvalidArgumentException exception]; network = OF_BSWAP32_IF_LE(network); memcpy(&address->sockaddr.ipx.sipx_network, &network, sizeof(address->sockaddr.ipx.sipx_network)); } uint32_t of_socket_address_get_ipx_network(const of_socket_address_t *address) { uint32_t network; if (address->family != OF_SOCKET_ADDRESS_FAMILY_IPX) @throw [OFInvalidArgumentException exception]; memcpy(&network, &address->sockaddr.ipx.sipx_network, sizeof(network)); return OF_BSWAP32_IF_LE(network); } void of_socket_address_set_ipx_node(of_socket_address_t *address, const unsigned char node[IPX_NODE_LEN]) { if (address->family != OF_SOCKET_ADDRESS_FAMILY_IPX) @throw [OFInvalidArgumentException exception]; memcpy(address->sockaddr.ipx.sipx_node, node, IPX_NODE_LEN); } void of_socket_address_get_ipx_node(const of_socket_address_t *address, unsigned char node[IPX_NODE_LEN]) { if (address->family != OF_SOCKET_ADDRESS_FAMILY_IPX) @throw [OFInvalidArgumentException exception]; memcpy(node, address->sockaddr.ipx.sipx_node, IPX_NODE_LEN); }