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/*
* Copyright (c) 2008-2022 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 <assert.h>
#import "OFConnectionFailedException.h"
enum {
stateSendAuthentication = 1,
stateReadVersion,
stateSendRequest,
stateReadResponse,
stateReadAddress,
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/*
* Copyright (c) 2008-2023 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 "OFTCPSocketSOCKS5Connector.h"
#import "OFData.h"
#import "OFRunLoop.h"
#import "OFString.h"
#import "OFConnectIPSocketFailedException.h"
enum {
stateSendAuthentication = 1,
stateReadVersion,
stateSendRequest,
stateReadResponse,
stateReadAddress,
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runLoopMode = [OFRunLoop currentRunLoop].currentMode;
switch (_SOCKS5State) {
case stateReadVersion:
SOCKSVersion = buffer;
if (SOCKSVersion[0] != 5 || SOCKSVersion[1] != 0) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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runLoopMode = [OFRunLoop currentRunLoop].currentMode;
switch (_SOCKS5State) {
case stateReadVersion:
SOCKSVersion = buffer;
if (SOCKSVersion[0] != 5 || SOCKSVersion[1] != 0) {
_exception = [[OFConnectIPSocketFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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_SOCKS5State = stateSendRequest;
[_socket asyncWriteData: _request runLoopMode: runLoopMode];
return false;
case stateReadResponse:
response = buffer;
if (response[0] != 5 || response[2] != 0) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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_SOCKS5State = stateSendRequest;
[_socket asyncWriteData: _request runLoopMode: runLoopMode];
return false;
case stateReadResponse:
response = buffer;
if (response[0] != 5 || response[2] != 0) {
_exception = [[OFConnectIPSocketFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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errNo = EPROTO;
#else
errNo = 0;
#endif
break;
}
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: _socket
errNo: errNo];
[self didConnect];
return false;
}
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errNo = EPROTO;
#else
errNo = 0;
#endif
break;
}
_exception = [[OFConnectIPSocketFailedException alloc]
initWithHost: _host
port: _port
socket: _socket
errNo: errNo];
[self didConnect];
return false;
}
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case 4: /* IPv6 */
_SOCKS5State = stateReadAddress;
[_socket asyncReadIntoBuffer: _buffer
exactLength: 16 + 2
runLoopMode: runLoopMode];
return false;
default:
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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case 4: /* IPv6 */
_SOCKS5State = stateReadAddress;
[_socket asyncReadIntoBuffer: _buffer
exactLength: 16 + 2
runLoopMode: runLoopMode];
return false;
default:
_exception = [[OFConnectIPSocketFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
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_SOCKS5State = stateReadAddress;
[_socket asyncReadIntoBuffer: _buffer
exactLength: addressLength[0] + 2
runLoopMode: runLoopMode];
return false;
default:
assert(0);
return false;
}
}
- (OFData *)stream: (OFStream *)sock
didWriteData: (OFData *)data
bytesWritten: (size_t)bytesWritten
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_SOCKS5State = stateReadAddress;
[_socket asyncReadIntoBuffer: _buffer
exactLength: addressLength[0] + 2
runLoopMode: runLoopMode];
return false;
default:
OFAssert(0);
return false;
}
}
- (OFData *)stream: (OFStream *)sock
didWriteData: (OFData *)data
bytesWritten: (size_t)bytesWritten
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_SOCKS5State = stateReadResponse;
[_socket asyncReadIntoBuffer: _buffer
exactLength: 4
runLoopMode: runLoopMode];
return nil;
default:
assert(0);
return nil;
}
}
@end
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_SOCKS5State = stateReadResponse;
[_socket asyncReadIntoBuffer: _buffer
exactLength: 4
runLoopMode: runLoopMode];
return nil;
default:
OFAssert(0);
return nil;
}
}
@end
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