/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <errno.h>
#import "OFSPXSocket.h"
#import "OFRunLoop.h"
#import "OFRunLoop+Private.h"
#import "OFSocket.h"
#import "OFSocket+Private.h"
#import "OFAlreadyOpenException.h"
#import "OFBindIPXSocketFailedException.h"
#import "OFConnectSPXSocketFailedException.h"
#import "OFNotOpenException.h"
#ifndef NSPROTO_SPX
# define NSPROTO_SPX 0
#endif
static const uint8_t SPXPacketType = 5;
@interface OFSPXSocket ()
- (int)of_createSocketForAddress: (const OFSocketAddress *)address
errNo: (int *)errNo;
- (bool)of_connectSocketToAddress: (const OFSocketAddress *)address
errNo: (int *)errNo;
- (void)of_closeSocket;
@end
OF_DIRECT_MEMBERS
@interface OFSPXSocketAsyncConnectDelegate: OFObject <OFRunLoopConnectDelegate>
{
OFSPXSocket *_socket;
uint32_t _network;
unsigned char _node[IPX_NODE_LEN];
uint16_t _port;
#ifdef OF_HAVE_BLOCKS
OFSPXSocketConnectedHandler _handler;
#endif
}
- (instancetype)initWithSocket: (OFSPXSocket *)socket
network: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
#ifdef OF_HAVE_BLOCKS
handler: (OFSPXSocketConnectedHandler)handler
#endif
;
- (void)startWithRunLoopMode: (OFRunLoopMode)runLoopMode;
@end
@implementation OFSPXSocketAsyncConnectDelegate
- (instancetype)initWithSocket: (OFSPXSocket *)sock
network: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
#ifdef OF_HAVE_BLOCKS
handler: (OFSPXSocketConnectedHandler)handler
#endif
{
self = [super init];
@try {
_socket = [sock retain];
_network = network;
memcpy(_node, node, IPX_NODE_LEN);
_port = port;
#ifdef OF_HAVE_BLOCKS
_handler = [handler copy];
#endif
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_socket release];
#ifdef OF_HAVE_BLOCKS
[_handler release];
#endif
[super dealloc];
}
- (void)startWithRunLoopMode: (OFRunLoopMode)runLoopMode
{
OFSocketAddress address =
OFSocketAddressMakeIPX(_network, _node, _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]) {
#ifdef OF_WINDOWS
if (errNo == EINPROGRESS || errNo == EWOULDBLOCK) {
#else
if (errNo == EINPROGRESS) {
#endif
[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 (_handler != NULL)
_handler(_socket, _network, _node, _port, exception);
else {
#endif
if ([delegate respondsToSelector:
@selector(socket:didConnectToNetwork:node:port:exception:)])
[delegate socket: _socket
didConnectToNetwork: _network
node: _node
port: _port
exception: exception];
#ifdef OF_HAVE_BLOCKS
}
#endif
}
- (id)of_connectionFailedExceptionForErrNo: (int)errNo
{
return [OFConnectSPXSocketFailedException exceptionWithNetwork: _network
node: _node
port: _port
socket: _socket
errNo: errNo];
}
@end
@implementation OFSPXSocket
@dynamic delegate;
- (int)of_createSocketForAddress: (const OFSocketAddress *)address
errNo: (int *)errNo
{
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL) && defined(FD_CLOEXEC)
int flags;
#endif
if (_socket != OFInvalidSocketHandle)
@throw [OFAlreadyOpenException exceptionWithObject: self];
if ((_socket = socket(address->sockaddr.ipx.sipx_family,
SOCK_SEQPACKET | SOCK_CLOEXEC, NSPROTO_SPX)) ==
OFInvalidSocketHandle) {
*errNo = _OFSocketErrNo();
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 OFSocketAddress *)address
errNo: (int *)errNo
{
if (_socket == OFInvalidSocketHandle)
@throw [OFNotOpenException exceptionWithObject: self];
if (connect(_socket, (struct sockaddr *)&address->sockaddr,
address->length) != 0) {
*errNo = _OFSocketErrNo();
return false;
}
return true;
}
- (void)of_closeSocket
{
closesocket(_socket);
_socket = OFInvalidSocketHandle;
}
- (void)connectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
{
OFSocketAddress address = OFSocketAddressMakeIPX(network, node, port);
int errNo;
if (![self of_createSocketForAddress: &address errNo: &errNo])
@throw [OFConnectSPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
socket: self
errNo: errNo];
if (![self of_connectSocketToAddress: &address errNo: &errNo]) {
[self of_closeSocket];
@throw [OFConnectSPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
socket: self
errNo: errNo];
}
}
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
{
[self asyncConnectToNetwork: network
node: node
port: port
runLoopMode: OFDefaultRunLoopMode];
}
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
runLoopMode: (OFRunLoopMode)runLoopMode
{
void *pool = objc_autoreleasePoolPush();
[[[[OFSPXSocketAsyncConnectDelegate alloc]
initWithSocket: self
network: network
node: node
port: port
#ifdef OF_HAVE_BLOCKS
handler: NULL
#endif
] autorelease] startWithRunLoopMode: runLoopMode];
objc_autoreleasePoolPop(pool);
}
#ifdef OF_HAVE_BLOCKS
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
block: (OFSPXSocketAsyncConnectBlock)block
{
OFSPXSocketConnectedHandler handler = ^ (OFSPXSocket *socket,
uint32_t network_, const unsigned char node_[IPX_NODE_LEN],
uint16_t port_, id exception) {
block(exception);
};
[self asyncConnectToNetwork: network
node: node
port: port
runLoopMode: OFDefaultRunLoopMode
handler: handler];
}
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
handler: (OFSPXSocketConnectedHandler)handler
{
[self asyncConnectToNetwork: network
node: node
port: port
runLoopMode: OFDefaultRunLoopMode
handler: handler];
}
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
runLoopMode: (OFRunLoopMode)runLoopMode
block: (OFSPXSocketAsyncConnectBlock)block
{
OFSPXSocketConnectedHandler handler = ^ (OFSPXSocket *socket,
uint32_t network_, const unsigned char node_[IPX_NODE_LEN],
uint16_t port_, id exception) {
block(exception);
};
[self asyncConnectToNetwork: network
node: node
port: port
runLoopMode: runLoopMode
handler: handler];
}
- (void)asyncConnectToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
runLoopMode: (OFRunLoopMode)runLoopMode
handler: (OFSPXSocketConnectedHandler)handler
{
void *pool = objc_autoreleasePoolPush();
[[[[OFSPXSocketAsyncConnectDelegate alloc]
initWithSocket: self
network: network
node: node
port: port
handler: handler
] autorelease] startWithRunLoopMode: runLoopMode];
objc_autoreleasePoolPop(pool);
}
#endif
- (OFSocketAddress)bindToNetwork: (uint32_t)network
node: (const unsigned char [IPX_NODE_LEN])node
port: (uint16_t)port
{
OFSocketAddress address;
#if SOCK_CLOEXEC == 0 && defined(HAVE_FCNTL_H) && defined(FD_CLOEXEC)
int flags;
#endif
if (_socket != OFInvalidSocketHandle)
@throw [OFAlreadyOpenException exceptionWithObject: self];
address = OFSocketAddressMakeIPX(network, node, port);
if ((_socket = socket(address.sockaddr.ipx.sipx_family,
SOCK_SEQPACKET | SOCK_CLOEXEC, NSPROTO_SPX)) ==
OFInvalidSocketHandle)
@throw [OFBindIPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
packetType: SPXPacketType
socket: self
errNo: _OFSocketErrNo()];
_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, (struct sockaddr *)&address.sockaddr,
address.length) != 0) {
int errNo = _OFSocketErrNo();
closesocket(_socket);
_socket = OFInvalidSocketHandle;
@throw [OFBindIPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
packetType: SPXPacketType
socket: self
errNo: errNo];
}
memset(&address, 0, sizeof(address));
address.family = OFSocketAddressFamilyIPX;
address.length = (socklen_t)sizeof(address.sockaddr);
if (_OFGetSockName(_socket, (struct sockaddr *)&address.sockaddr,
&address.length) != 0) {
int errNo = _OFSocketErrNo();
closesocket(_socket);
_socket = OFInvalidSocketHandle;
@throw [OFBindIPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
packetType: SPXPacketType
socket: self
errNo: errNo];
}
if (address.sockaddr.ipx.sipx_family != AF_IPX) {
closesocket(_socket);
_socket = OFInvalidSocketHandle;
@throw [OFBindIPXSocketFailedException
exceptionWithNetwork: network
node: node
port: port
packetType: SPXPacketType
socket: self
errNo: EAFNOSUPPORT];
}
return address;
}
@end