/*
* 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"
#include <errno.h>
#import "OFSPXSocket.h"
#import "OFRunLoop.h"
#import "OFRunLoop+Private.h"
#import "OFAlreadyConnectedException.h"
#import "OFBindFailedException.h"
#import "OFConnectionFailedException.h"
#import "OFNotOpenException.h"
#import "socket.h"
#import "socket_helpers.h"
#ifndef NSPROTO_SPX
# define NSPROTO_SPX 0
#endif
#define SPX_PACKET_TYPE 5
@interface OFSPXSocket ()
- (int)of_createSocketForAddress: (const of_socket_address_t *)address
errNo: (int *)errNo;
- (bool)of_connectSocketToAddress: (const of_socket_address_t *)address
errNo: (int *)errNo;
- (void)of_closeSocket;
@end
OF_DIRECT_MEMBERS
@interface OFSPXSocketAsyncConnectDelegate: OFObject <OFRunLoopConnectDelegate>
{
OFSPXSocket *_socket;
unsigned char _node[IPX_NODE_LEN];
uint32_t _network;
uint16_t _port;
#ifdef OF_HAVE_BLOCKS
of_spx_socket_async_connect_block_t _block;
#endif
}
- (instancetype)initWithSocket: (OFSPXSocket *)socket
node: (unsigned char [IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
#ifdef OF_HAVE_BLOCKS
block: (of_spx_socket_async_connect_block_t)block
#endif
;
- (void)startWithRunLoopMode: (of_run_loop_mode_t)runLoopMode;
@end
@implementation OFSPXSocketAsyncConnectDelegate
- (instancetype)initWithSocket: (OFSPXSocket *)sock
node: (unsigned char [IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
#ifdef OF_HAVE_BLOCKS
block: (of_spx_socket_async_connect_block_t)block
#endif
{
self = [super init];
@try {
_socket = [sock retain];
memcpy(_node, node, IPX_NODE_LEN);
_network = network;
_port = port;
#ifdef OF_HAVE_BLOCKS
_block = [block copy];
#endif
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_socket release];
#ifdef OF_HAVE_BLOCKS
[_block release];
#endif
[super dealloc];
}
- (void)startWithRunLoopMode: (of_run_loop_mode_t)runLoopMode
{
of_socket_address_t address =
of_socket_address_ipx(_node, _network, _port);
id exception = nil;
int errNo;
if (![_socket of_createSocketForAddress: &address
errNo: &errNo]) {
exception = [self of_connectionFailedExceptionForErrNo: errNo];
goto inform_delegate;
}
_socket.canBlock = false;
if (![_socket of_connectSocketToAddress: &address
errNo: &errNo]) {
if (errNo == EINPROGRESS) {
[OFRunLoop of_addAsyncConnectForSocket: _socket
mode: runLoopMode
delegate: self];
return;
}
[_socket of_closeSocket];
exception = [self of_connectionFailedExceptionForErrNo: errNo];
}
inform_delegate:
[self performSelector: @selector(of_socketDidConnect:exception:)
withObject: _socket
withObject: exception
afterDelay: 0];
}
- (void)of_socketDidConnect: (id)sock
exception: (id)exception
{
id <OFSPXSocketDelegate> delegate = ((OFSPXSocket *)sock).delegate;
if (exception == nil)
((OFSPXSocket *)sock).canBlock = true;
#ifdef OF_HAVE_BLOCKS
if (_block != NULL)
_block(exception);
else {
#endif
if ([delegate respondsToSelector:
@selector(socket:didConnectToNode:network:port:exception:)])
[delegate socket: _socket
didConnectToNode: _node
network: _network
port: _port
exception: exception];
#ifdef OF_HAVE_BLOCKS
}
#endif
}
- (id)of_connectionFailedExceptionForErrNo: (int)errNo
{
return [OFConnectionFailedException exceptionWithNode: _node
network: _network
port: _port
socket: _socket
errNo: errNo];
}
@end
@implementation OFSPXSocket
@dynamic delegate;
- (int)of_createSocketForAddress: (const of_socket_address_t *)address
errNo: (int *)errNo
{
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL) && defined(FD_CLOEXEC)
int flags;
#endif
if (_socket != INVALID_SOCKET)
@throw [OFAlreadyConnectedException exceptionWithSocket: self];
if ((_socket = socket(address->sockaddr.ipx.sipx_family,
SOCK_SEQPACKET | SOCK_CLOEXEC, NSPROTO_SPX)) == INVALID_SOCKET) {
*errNo = of_socket_errno();
return false;
}
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL) && defined(FD_CLOEXEC)
if ((flags = fcntl(_socket, F_GETFD, 0)) != -1)
fcntl(_socket, F_SETFD, flags | FD_CLOEXEC);
#endif
return true;
}
- (bool)of_connectSocketToAddress: (const of_socket_address_t *)address
errNo: (int *)errNo
{
if (_socket == INVALID_SOCKET)
@throw [OFNotOpenException exceptionWithObject: self];
if (connect(_socket, &address->sockaddr.sockaddr,
address->length) != 0) {
*errNo = of_socket_errno();
return false;
}
return true;
}
- (void)of_closeSocket
{
closesocket(_socket);
_socket = INVALID_SOCKET;
}
- (void)connectToNode: (unsigned char [_Nonnull IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
{
of_socket_address_t address =
of_socket_address_ipx(node, network, port);
int errNo;
if (![self of_createSocketForAddress: &address
errNo: &errNo])
@throw [OFConnectionFailedException
exceptionWithNode: node
network: network
port: port
socket: self
errNo: errNo];
if (![self of_connectSocketToAddress: &address
errNo: &errNo]) {
[self of_closeSocket];
@throw [OFConnectionFailedException
exceptionWithNode: node
network: network
port: port
socket: self
errNo: errNo];
}
}
- (void)asyncConnectToNode: (unsigned char [_Nonnull IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
{
[self asyncConnectToNode: node
network: network
port: port
runLoopMode: of_run_loop_mode_default];
}
- (void)asyncConnectToNode: (unsigned char [_Nonnull IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
runLoopMode: (of_run_loop_mode_t)runLoopMode
{
void *pool = objc_autoreleasePoolPush();
[[[[OFSPXSocketAsyncConnectDelegate alloc]
initWithSocket: self
node: node
network: network
port: port
#ifdef OF_HAVE_BLOCKS
block: NULL
#endif
] autorelease] startWithRunLoopMode: runLoopMode];
objc_autoreleasePoolPop(pool);
}
#ifdef OF_HAVE_BLOCKS
- (void)asyncConnectToNode: (unsigned char [_Nonnull IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
block: (of_spx_socket_async_connect_block_t)block
{
[self asyncConnectToNode: node
network: network
port: port
runLoopMode: of_run_loop_mode_default
block: block];
}
- (void)asyncConnectToNode: (unsigned char [_Nonnull IPX_NODE_LEN])node
network: (uint32_t)network
port: (uint16_t)port
runLoopMode: (of_run_loop_mode_t)runLoopMode
block: (of_spx_socket_async_connect_block_t)block
{
void *pool = objc_autoreleasePoolPush();
[[[[OFSPXSocketAsyncConnectDelegate alloc]
initWithSocket: self
node: node
network: network
port: port
block: block
] autorelease] startWithRunLoopMode: runLoopMode];
objc_autoreleasePoolPop(pool);
}
#endif
- (of_socket_address_t)bindToPort: (uint16_t)port
{
const unsigned char zeroNode[IPX_NODE_LEN] = { 0 };
of_socket_address_t address;
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL_H) && defined(FD_CLOEXEC)
int flags;
#endif
if (_socket != INVALID_SOCKET)
@throw [OFAlreadyConnectedException exceptionWithSocket: self];
address = of_socket_address_ipx(zeroNode, 0, port);
if ((_socket = socket(address.sockaddr.sockaddr.sa_family,
SOCK_SEQPACKET | SOCK_CLOEXEC, NSPROTO_SPX)) == INVALID_SOCKET)
@throw [OFBindFailedException
exceptionWithPort: port
packetType: SPX_PACKET_TYPE
socket: self
errNo: of_socket_errno()];
_canBlock = true;
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL_H) && defined(FD_CLOEXEC)
if ((flags = fcntl(_socket, F_GETFD, 0)) != -1)
fcntl(_socket, F_SETFD, flags | FD_CLOEXEC);
#endif
if (bind(_socket, &address.sockaddr.sockaddr, address.length) != 0) {
int errNo = of_socket_errno();
closesocket(_socket);
_socket = INVALID_SOCKET;
@throw [OFBindFailedException exceptionWithPort: port
packetType: SPX_PACKET_TYPE
socket: self
errNo: errNo];
}
memset(&address, 0, sizeof(address));
address.family = OF_SOCKET_ADDRESS_FAMILY_IPX;
address.length = (socklen_t)sizeof(address.sockaddr);
if (of_getsockname(_socket, &address.sockaddr.sockaddr,
&address.length) != 0) {
int errNo = of_socket_errno();
closesocket(_socket);
_socket = INVALID_SOCKET;
@throw [OFBindFailedException exceptionWithPort: port
packetType: SPX_PACKET_TYPE
socket: self
errNo: errNo];
}
if (address.sockaddr.sockaddr.sa_family != AF_IPX) {
closesocket(_socket);
_socket = INVALID_SOCKET;
@throw [OFBindFailedException exceptionWithPort: port
packetType: SPX_PACKET_TYPE
socket: self
errNo: EAFNOSUPPORT];
}
return address;
}
@end