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/*
* Parsers of SOCKS protocol messages
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* Written by Marat Ibadinov <ibadinov@me.com>
* Date: 2013
*
* This file is part of the GNUstep Base Library.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 31 Milk Street #960789 Boston, MA 02196 USA.
*
* $Date$ $Revision$
*/
#import "GSSocksParser.h"
#import "GSSocks4Parser.h"
#import "GSSocks5Parser.h"
#import "Foundation/NSException.h"
@interface NSObject (SubclassResponsibility)
- (id) subclassResponsibility: (SEL)aSelector;
@end
@implementation GSSocksParser
- (id) init
{
if (nil != (self = [super init]))
{
configuration = nil;
address = nil;
delegate = nil;
port = 0;
}
return self;
}
- (id) initWithConfiguration: (NSDictionary *)aConfiguration
address: (NSString *)anAddress
port: (NSUInteger)aPort
{
NSString *version;
Class concreteClass;
version = [aConfiguration objectForKey: NSStreamSOCKSProxyVersionKey];
version = version ? version : NSStreamSOCKSProxyVersion5;
[self release];
if ([version isEqualToString: NSStreamSOCKSProxyVersion5])
{
concreteClass = [GSSocks5Parser class];
}
else if ([version isEqualToString: NSStreamSOCKSProxyVersion4])
{
concreteClass = [GSSocks4Parser class];
}
else
{
[NSException raise: NSInternalInconsistencyException
format: @"Unsupported socks version: %@", version];
return nil; // Avoid spurious compiler warning
}
return [[concreteClass alloc] initWithConfiguration: aConfiguration
address: anAddress
port: aPort];
}
- (void) dealloc
{
[delegate release];
[address release];
[configuration release];
[super dealloc];
}
- (id<GSSocksParserDelegate>) delegate
{
return delegate;
}
- (void) setDelegate: (id<GSSocksParserDelegate>)aDelegate
{
id previous = delegate;
delegate = [aDelegate retain];
[previous release];
}
- (NSString *) address
{
return address;
}
- (NSUInteger) port
{
return port;
}
- (void) start
{
[self subclassResponsibility:_cmd];
}
- (void) parseNextChunk: (NSData *)aChunk
{
[self subclassResponsibility: _cmd];
}
@end
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