/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018 * Jonathan Schleifer * * 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 /* For memalign() */ #endif #include #import "OFArray.h" #import "OFCharacterSet.h" #import "OFLocale.h" #import "OFString.h" #import "OFException.h" /* For some E* -> WSAE* defines */ #import "OFInvalidArgumentException.h" #import "OFInvalidFormatException.h" #import "OFLockFailedException.h" #import "OFUnlockFailedException.h" #import "socket.h" #import "socket_helpers.h" #ifdef OF_HAVE_THREADS # include "threading.h" #endif #ifdef OF_NINTENDO_3DS # include <3ds/types.h> # include <3ds/services/soc.h> #endif #ifdef OF_HAVE_THREADS static of_mutex_t mutex; #endif static bool initSuccessful = false; static void init(void) { #if defined(OF_WINDOWS) WSADATA wsa; if (WSAStartup(MAKEWORD(2, 0), &wsa)) return; #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 #ifdef OF_HAVE_THREADS if (!of_mutex_new(&mutex)) return; # ifdef OF_WII if (!of_spinlock_new(&spinlock)) return; # endif #endif initSuccessful = true; } bool of_socket_init() { #ifdef OF_HAVE_THREADS static of_once_t onceControl = OF_ONCE_INIT; of_once(&onceControl, init); #else static bool initialized = false; if (!initialized) { init(); initialized = true; } #endif return initSuccessful; } int of_socket_errno() { #ifndef OF_WINDOWS return errno; #else 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; #endif } #ifndef OF_WII int of_getsockname(of_socket_t sock, struct sockaddr *restrict addr, socklen_t *restrict addrLen) { int ret; # ifdef OF_HAVE_THREADS if (!of_mutex_lock(&mutex)) @throw [OFLockFailedException exception]; # endif ret = getsockname(sock, addr, addrLen); # ifdef OF_HAVE_THREADS if (!of_mutex_unlock(&mutex)) @throw [OFUnlockFailedException exception]; # endif return ret; } #endif of_socket_address_t of_socket_address_parse_ipv4(OFString *IPv4, uint16_t port) { /* TODO: Support IPs that are not in the a.b.c.d format? */ void *pool = objc_autoreleasePoolPush(); OFCharacterSet *whitespaceCharacterSet = [OFCharacterSet whitespaceCharacterSet]; of_socket_address_t ret; struct sockaddr_in *addrIn = (struct sockaddr_in *)&ret.address; OFArray OF_GENERIC(OFString *) *components; uint32_t addr; memset(&ret, '\0', sizeof(ret)); ret.length = sizeof(struct sockaddr_in); addrIn->sin_family = AF_INET; addrIn->sin_port = OF_BSWAP16_IF_LE(port); components = [IPv4 componentsSeparatedByString: @"."]; if ([components count] != 4) @throw [OFInvalidFormatException exception]; addr = 0; for (OFString *component in components) { intmax_t number; if ([component length] == 0) @throw [OFInvalidFormatException exception]; if ([component indexOfCharacterFromSet: whitespaceCharacterSet] != OF_NOT_FOUND) @throw [OFInvalidFormatException exception]; number = [component decimalValue]; if (number < 0 || number > UINT8_MAX) @throw [OFInvalidFormatException exception]; addr = (addr << 8) | (number & 0xFF); } addrIn->sin_addr.s_addr = OF_BSWAP32_IF_LE(addr); objc_autoreleasePoolPop(pool); return ret; } #ifdef OF_HAVE_IPV6 static uint16_t parseIPv6Component(OFString *component) { uintmax_t number; if ([component indexOfCharacterFromSet: [OFCharacterSet whitespaceCharacterSet]] != OF_NOT_FOUND) @throw [OFInvalidFormatException exception]; number = [component hexadecimalValue]; 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 = (struct sockaddr_in6 *)&ret.address; size_t doubleColon; memset(&ret, '\0', sizeof(ret)); ret.length = sizeof(struct sockaddr_in6); addrIn6->sin6_family = AF_INET6; addrIn6->sin6_port = OF_BSWAP16_IF_LE(port); doubleColon = [IPv6 rangeOfString: @"::"].location; if (doubleColon != OF_NOT_FOUND) { OFString *left = [IPv6 substringWithRange: of_range(0, doubleColon)]; OFString *right = [IPv6 substringWithRange: of_range(doubleColon + 2, [IPv6 length] - 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 >> 8; addrIn6->sin6_addr.s6_addr[--i] = number; } } 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; } #endif of_socket_address_t of_socket_address_parse_ip(OFString *IP, uint16_t port) { #ifdef OF_HAVE_IPV6 @try { return of_socket_address_parse_ipv6(IP, port); } @catch (OFInvalidFormatException *e) { #endif return of_socket_address_parse_ipv4(IP, port); #ifdef OF_HAVE_IPV6 } #endif } bool of_socket_address_equal(of_socket_address_t *address1, of_socket_address_t *address2) { struct sockaddr_in *addrIn1, *addrIn2; #ifdef OF_HAVE_IPV6 struct sockaddr_in6 *addrIn6_1, *addrIn6_2; #endif if (address1->address.ss_family != address2->address.ss_family) return false; switch (address1->address.ss_family) { case AF_INET: #if !defined(OF_WII) && !defined(OF_NINTENDO_3DS) if (address1->length < (socklen_t)sizeof(struct sockaddr_in) || address2->length < (socklen_t)sizeof(struct sockaddr_in)) @throw [OFInvalidArgumentException exception]; #else if (address1->length < 8 || address2->length < 8) @throw [OFInvalidArgumentException exception]; #endif addrIn1 = (struct sockaddr_in *)&address1->address; addrIn2 = (struct sockaddr_in *)&address2->address; if (addrIn1->sin_port != addrIn2->sin_port) return false; if (addrIn1->sin_addr.s_addr != addrIn2->sin_addr.s_addr) return false; break; #ifdef OF_HAVE_IPV6 case AF_INET6: if (address1->length < (socklen_t)sizeof(struct sockaddr_in6) || address2->length < (socklen_t)sizeof(struct sockaddr_in6)) @throw [OFInvalidArgumentException exception]; addrIn6_1 = (struct sockaddr_in6 *)&address1->address; addrIn6_2 = (struct sockaddr_in6 *)&address2->address; 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; #endif default: @throw [OFInvalidArgumentException exception]; } return true; } uint32_t of_socket_address_hash(of_socket_address_t *address) { uint32_t hash = of_hash_seed; struct sockaddr_in *addrIn; #ifdef OF_HAVE_IPV6 struct sockaddr_in6 *addrIn6; uint32_t subhash; #endif hash += address->address.ss_family; switch (address->address.ss_family) { case AF_INET: #if !defined(OF_WII) && !defined(OF_NINTENDO_3DS) if (address->length < (socklen_t)sizeof(struct sockaddr_in)) @throw [OFInvalidArgumentException exception]; #else if (address->length < 8) @throw [OFInvalidArgumentException exception]; #endif addrIn = (struct sockaddr_in *)&address->address; hash += (addrIn->sin_port << 1); hash ^= addrIn->sin_addr.s_addr; break; #ifdef OF_HAVE_IPV6 case AF_INET6: if (address->length < (socklen_t)sizeof(struct sockaddr_in6)) @throw [OFInvalidArgumentException exception]; addrIn6 = (struct sockaddr_in6 *)&address->address; hash += (addrIn6->sin6_port << 1); OF_HASH_INIT(subhash); for (size_t i = 0; i < sizeof(addrIn6->sin6_addr.s6_addr); i++) OF_HASH_ADD(subhash, addrIn6->sin6_addr.s6_addr[i]); OF_HASH_FINALIZE(subhash); hash ^= subhash; break; #endif default: @throw [OFInvalidArgumentException exception]; } return hash; } static OFString * IPv4String(const of_socket_address_t *address, uint16_t *port) { const struct sockaddr_in *addrIn = (const struct sockaddr_in *)&address->address; 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; } #ifdef OF_HAVE_IPV6 static OFString * IPv6String(const of_socket_address_t *address, uint16_t *port) { OFMutableString *string = [OFMutableString string]; const struct sockaddr_in6 *addrIn6 = (const struct sockaddr_in6 *)&address->address; 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 (uint_fast8_t i = 0; i < maxZerosStart; i += 2) { [string appendFormat: (first ? @"%x" : @":%x"), (addrIn6->sin6_addr.s6_addr[i] << 8) | addrIn6->sin6_addr.s6_addr[i + 1]]; first = false; } [string appendString: @"::"]; first = true; for (uint_fast8_t i = maxZerosStart + (maxZerosCount * 2); 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; } } 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; } #endif OFString * of_socket_address_ip_string(const of_socket_address_t *address, uint16_t *port) { switch (address->address.ss_family) { case AF_INET: return IPv4String(address, port); #ifdef OF_HAVE_IPV6 case AF_INET6: return IPv6String(address, port); #endif default: @throw [OFInvalidArgumentException exception]; } }