ObjFW  Check-in [f7abfde081]

Overview
Comment:OFTCPSocketSOCKS5Connector: Move state enum to .m
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SHA3-256: f7abfde0811fcb30bb34e8406400f54942c584bb493593a2edabffe8d27f53bf
User & Date: js on 2021-04-30 21:15:25
Other Links: manifest | tags
Context
2021-04-30
21:23
Make OFHashSeed private check-in: 39863b3503 user: js tags: trunk
21:15
OFTCPSocketSOCKS5Connector: Move state enum to .m check-in: f7abfde081 user: js tags: trunk
21:11
OFPlugin: Document how to create a plugin check-in: eaea08f31d user: js tags: trunk
Changes
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Modified src/OFTCPSocketSOCKS5Connector.h from [444395c847] to [a3decd0834].

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	OFString *_host;
	uint16_t _port;
	id <OFTCPSocketDelegate> _Nullable _delegate;
#ifdef OF_HAVE_BLOCKS
	OFTCPSocketAsyncConnectBlock _Nullable _block;
#endif
	id _Nullable _exception;
	enum {
		OFSOCKS5StateSendAuthentication = 1,
		OFSOCKS5StateReadVersion,
		OFSOCKS5StateSendRequest,
		OFSOCKS5StateReadResponse,
		OFSOCKS5StateReadAddress,
		OFSOCKS5StateReadAddressLength,
	} _SOCKS5State;
	uint_least8_t _SOCKS5State;
	/* Longest read is domain name (max 255 bytes) + port */
	unsigned char _buffer[257];
	OFMutableData *_Nullable _request;
}

- (instancetype)initWithSocket: (OFTCPSocket *)sock
			  host: (OFString *)host
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Modified src/OFTCPSocketSOCKS5Connector.m from [e52c5629f6] to [cef61681e6].

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#import "OFTCPSocketSOCKS5Connector.h"
#import "OFData.h"
#import "OFRunLoop.h"
#import "OFString.h"

#import "OFConnectionFailedException.h"

enum {
	stateSendAuthentication = 1,
	stateReadVersion,
	stateSendRequest,
	stateReadResponse,
	stateReadAddress,
	stateReadAddressLength,
};

@implementation OFTCPSocketSOCKS5Connector
- (instancetype)initWithSocket: (OFTCPSocket *)sock
			  host: (OFString *)host
			  port: (uint16_t)port
		      delegate: (id <OFTCPSocketDelegate>)delegate
#ifdef OF_HAVE_BLOCKS
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		_exception = [exception retain];
		[self didConnect];
		return;
	}

	data = [OFData dataWithItems: "\x05\x01\x00" count: 3];

	_SOCKS5State = OFSOCKS5StateSendAuthentication;
	_SOCKS5State = stateSendAuthentication;
	[_socket asyncWriteData: data
		    runLoopMode: [OFRunLoop currentRunLoop].currentMode];
}

-      (bool)stream: (OFStream *)sock
  didReadIntoBuffer: (void *)buffer
	     length: (size_t)length
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		[self didConnect];
		return false;
	}

	runLoopMode = [OFRunLoop currentRunLoop].currentMode;

	switch (_SOCKS5State) {
	case OFSOCKS5StateReadVersion:
	case stateReadVersion:
		SOCKSVersion = buffer;

		if (SOCKSVersion[0] != 5 || SOCKSVersion[1] != 0) {
			_exception = [[OFConnectionFailedException alloc]
			    initWithHost: _host
				    port: _port
				  socket: self
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		[_request addItem: &hostLength];
		[_request addItems: _host.UTF8String count: hostLength];

		port[0] = _port >> 8;
		port[1] = _port & 0xFF;
		[_request addItems: port count: 2];

		_SOCKS5State = OFSOCKS5StateSendRequest;
		_SOCKS5State = stateSendRequest;
		[_socket asyncWriteData: _request runLoopMode: runLoopMode];
		return false;
	case OFSOCKS5StateReadResponse:
	case stateReadResponse:
		response = buffer;

		if (response[0] != 5 || response[2] != 0) {
			_exception = [[OFConnectionFailedException alloc]
			    initWithHost: _host
				    port: _port
				  socket: self
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			[self didConnect];
			return false;
		}

		/* Skip the rest of the response */
		switch (response[3]) {
		case 1: /* IPv4 */
			_SOCKS5State = OFSOCKS5StateReadAddress;
			_SOCKS5State = stateReadAddress;
			[_socket asyncReadIntoBuffer: _buffer
					 exactLength: 4 + 2
					 runLoopMode: runLoopMode];
			return false;
		case 3: /* Domain name */
			_SOCKS5State = OFSOCKS5StateReadAddressLength;
			_SOCKS5State = stateReadAddressLength;
			[_socket asyncReadIntoBuffer: _buffer
					 exactLength: 1
					 runLoopMode: runLoopMode];
			return false;
		case 4: /* IPv6 */
			_SOCKS5State = OFSOCKS5StateReadAddress;
			_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;
		}

		return false;
	case OFSOCKS5StateReadAddress:
	case stateReadAddress:
		[self didConnect];
		return false;
	case OFSOCKS5StateReadAddressLength:
	case stateReadAddressLength:
		addressLength = buffer;

		_SOCKS5State = OFSOCKS5StateReadAddress;
		_SOCKS5State = stateReadAddress;
		[_socket asyncReadIntoBuffer: _buffer
				 exactLength: addressLength[0] + 2
				 runLoopMode: runLoopMode];
		return false;
	default:
		assert(0);
		return false;
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		[self didConnect];
		return nil;
	}

	runLoopMode = [OFRunLoop currentRunLoop].currentMode;

	switch (_SOCKS5State) {
	case OFSOCKS5StateSendAuthentication:
		_SOCKS5State = OFSOCKS5StateReadVersion;
	case stateSendAuthentication:
		_SOCKS5State = stateReadVersion;
		[_socket asyncReadIntoBuffer: _buffer
				 exactLength: 2
				 runLoopMode: runLoopMode];
		return nil;
	case OFSOCKS5StateSendRequest:
	case stateSendRequest:
		[_request release];
		_request = nil;

		_SOCKS5State = OFSOCKS5StateReadResponse;
		_SOCKS5State = stateReadResponse;
		[_socket asyncReadIntoBuffer: _buffer
				 exactLength: 4
				 runLoopMode: runLoopMode];
		return nil;
	default:
		assert(0);
		return nil;
	}
}
@end

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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