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static uint16_t defaultSOCKS5Port = 1080;
@interface OFTCPSocket_ConnectContext: OFObject
{
OFTCPSocket *_socket;
OFString *_host;
uint16_t _port;
id _target;
SEL _selector;
id _context;
#ifdef OF_HAVE_BLOCKS
of_tcp_socket_async_connect_block_t _block;
#endif
id _exception;
OFData *_socketAddresses;
size_t _socketAddressesIndex;
}
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
target: (id)target
selector: (SEL)selector
context: (id)context;
#ifdef OF_HAVE_BLOCKS
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
block: (of_tcp_socket_async_connect_block_t)block;
#endif
- (void)didConnect;
- (void)socketDidConnect: (OFTCPSocket *)sock
context: (id)context
exception: (id)exception;
- (void)tryNextAddress;
- (void)resolver: (OFDNSResolver *)resolver
didResolveDomainName: (OFString *)domainName
socketAddresses: (OFData *)socketAddresses
context: (id)context
exception: (id)exception;
- (void)start;
@end
@implementation OFTCPSocket_ConnectContext
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
target: (id)target
selector: (SEL)selector
context: (id)context
{
self = [super init];
@try {
_socket = [sock retain];
_host = [host copy];
_port = port;
_target = [target retain];
_selector = selector;
_context = [context retain];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#ifdef OF_HAVE_BLOCKS
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
block: (of_tcp_socket_async_connect_block_t)block
{
self = [super init];
@try {
_socket = [sock retain];
_host = [host copy];
_port = port;
_block = [block copy];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#endif
- (void)dealloc
{
[_socket release];
[_host release];
[_target release];
[_context release];
#ifdef OF_HAVE_BLOCKS
[_block release];
#endif
[_exception release];
[_socketAddresses release];
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static uint16_t defaultSOCKS5Port = 1080;
@interface OFTCPSocket_ConnectContext: OFObject
{
OFTCPSocket *_socket;
OFString *_host;
uint16_t _port;
OFString *_SOCKS5Host;
uint16_t _SOCKS5Port;
id _target;
SEL _selector;
id _context;
#ifdef OF_HAVE_BLOCKS
of_tcp_socket_async_connect_block_t _block;
#endif
id _exception;
OFData *_socketAddresses;
size_t _socketAddressesIndex;
/* Longest read is domain name (max 255 bytes) + port */
unsigned char _buffer[257];
}
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
SOCKS5Host: (OFString *)SOCKS5Host
SOCKS5Port: (uint16_t)SOCKS5Port
target: (id)target
selector: (SEL)selector
context: (id)context;
#ifdef OF_HAVE_BLOCKS
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
SOCKS5Host: (OFString *)SOCKS5Host
SOCKS5Port: (uint16_t)SOCKS5Port
block: (of_tcp_socket_async_connect_block_t)block;
#endif
- (void)didConnect;
- (void)socketDidConnect: (OFTCPSocket *)sock
context: (id)context
exception: (id)exception;
- (void)tryNextAddress;
- (void)resolver: (OFDNSResolver *)resolver
didResolveDomainName: (OFString *)domainName
socketAddresses: (OFData *)socketAddresses
context: (id)context
exception: (id)exception;
- (void)start;
- (void)sendSOCKS5Request;
- (size_t)socket: (OFTCPSocket *)sock
didSendSOCKS5Authentication: (const void *)request
bytesWritten: (size_t)bytesWritten
context: (id)context
exception: (id)exception;
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKSVersion: (unsigned char *)SOCKSVersion
length: (size_t)length
context: (id)context
exception: (id)exception;
- (size_t)socket: (OFTCPSocket *)sock
didSendSOCKS5Request: (const void *)request
bytesWritten: (size_t)bytesWritten
context: (id)context
exception: (id)exception;
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5Response: (unsigned char *)response
length: (size_t)length
context: (id)context
exception: (id)exception;
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5Address: (unsigned char *)address
length: (size_t)length
context: (id)context
exception: (id)exception;
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5AddressLength: (unsigned char *)addressLength
length: (size_t)length
context: (id)context
exception: (id)exception;
@end
@implementation OFTCPSocket_ConnectContext
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
SOCKS5Host: (OFString *)SOCKS5Host
SOCKS5Port: (uint16_t)SOCKS5Port
target: (id)target
selector: (SEL)selector
context: (id)context
{
self = [super init];
@try {
_socket = [sock retain];
_host = [host copy];
_port = port;
_SOCKS5Host = [SOCKS5Host copy];
_SOCKS5Port = SOCKS5Port;
_target = [target retain];
_selector = selector;
_context = [context retain];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#ifdef OF_HAVE_BLOCKS
- (instancetype)initWithSocket: (OFTCPSocket *)sock
host: (OFString *)host
port: (uint16_t)port
SOCKS5Host: (OFString *)SOCKS5Host
SOCKS5Port: (uint16_t)SOCKS5Port
block: (of_tcp_socket_async_connect_block_t)block
{
self = [super init];
@try {
_socket = [sock retain];
_host = [host copy];
_port = port;
_SOCKS5Host = [SOCKS5Host copy];
_SOCKS5Port = SOCKS5Port;
_block = [block copy];
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#endif
- (void)dealloc
{
[_socket release];
[_host release];
[_SOCKS5Host release];
[_target release];
[_context release];
#ifdef OF_HAVE_BLOCKS
[_block release];
#endif
[_exception release];
[_socketAddresses release];
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}
- (void)socketDidConnect: (OFTCPSocket *)sock
context: (id)context
exception: (id)exception
{
if (exception != nil) {
if (_socketAddressesIndex >= [_socketAddresses count])
_exception = [exception retain];
else {
[self tryNextAddress];
return;
}
}
[self didConnect];
}
- (void)tryNextAddress
{
of_socket_address_t address = *(const of_socket_address_t *)
[_socketAddresses itemAtIndex: _socketAddressesIndex++];
int errNo;
of_socket_address_set_port(&address, _port);
if (![_socket of_createSocketForAddress: &address
errNo: &errNo]) {
if (_socketAddressesIndex >= [_socketAddresses count]) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
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}
- (void)socketDidConnect: (OFTCPSocket *)sock
context: (id)context
exception: (id)exception
{
if (exception != nil) {
if (_socketAddressesIndex >= [_socketAddresses count]) {
_exception = [exception retain];
[self didConnect];
} else {
[self tryNextAddress];
}
return;
}
if (_SOCKS5Host != nil)
[self sendSOCKS5Request];
else
[self didConnect];
}
- (void)tryNextAddress
{
of_socket_address_t address = *(const of_socket_address_t *)
[_socketAddresses itemAtIndex: _socketAddressesIndex++];
int errNo;
if (_SOCKS5Host != nil)
of_socket_address_set_port(&address, _SOCKS5Port);
else
of_socket_address_set_port(&address, _port);
if (![_socket of_createSocketForAddress: &address
errNo: &errNo]) {
if (_socketAddressesIndex >= [_socketAddresses count]) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
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_socketAddresses = [socketAddresses copy];
[self tryNextAddress];
}
- (void)start
{
@try {
of_socket_address_t address =
of_socket_address_parse_ip(_host, _port);
_socketAddresses = [[OFData alloc]
initWithItems: &address
itemSize: sizeof(address)
count: 1];
[self tryNextAddress];
return;
} @catch (OFInvalidFormatException *e) {
}
[[OFThread DNSResolver]
asyncResolveSocketAddressesForHost: _host
target: self
selector: @selector(resolver:
didResolveDomainName:
socketAddresses:context:
exception:)
context: nil];
}
@end
@implementation OFTCPSocket
@synthesize SOCKS5Host = _SOCKS5Host, SOCKS5Port = _SOCKS5Port;
+ (void)setSOCKS5Host: (OFString *)host
{
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_socketAddresses = [socketAddresses copy];
[self tryNextAddress];
}
- (void)start
{
OFString *host;
uint16_t port;
if (_SOCKS5Host != nil) {
if ([_host UTF8StringLength] > 255)
@throw [OFOutOfRangeException exception];
host = _SOCKS5Host;
port = _SOCKS5Port;
} else {
host = _host;
port = _port;
}
@try {
of_socket_address_t address =
of_socket_address_parse_ip(host, port);
_socketAddresses = [[OFData alloc]
initWithItems: &address
itemSize: sizeof(address)
count: 1];
[self tryNextAddress];
return;
} @catch (OFInvalidFormatException *e) {
}
[[OFThread DNSResolver]
asyncResolveSocketAddressesForHost: host
target: self
selector: @selector(resolver:
didResolveDomainName:
socketAddresses:context:
exception:)
context: nil];
}
- (void)sendSOCKS5Request
{
[_socket asyncWriteBuffer: "\x05\x01\x00"
length: 3
target: self
selector: @selector(socket:didSendSOCKS5Authentication:
bytesWritten:context:exception:)
context: nil];
}
- (size_t)socket: (OFTCPSocket *)sock
didSendSOCKS5Authentication: (const void *)request
bytesWritten: (size_t)bytesWritten
context: (id)context
exception: (id)exception
{
if (exception != nil) {
_exception = [exception retain];
[self didConnect];
return 0;
}
[_socket asyncReadIntoBuffer: _buffer
exactLength: 2
target: self
selector: @selector(socket:didReadSOCKSVersion:
length:context:exception:)
context: nil];
return 0;
}
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKSVersion: (unsigned char *)SOCKSVersion
length: (size_t)length
context: (id)context
exception: (id)exception
{
OFMutableData *request;
uint8_t hostLength;
unsigned char port[2];
if (exception != nil) {
_exception = [exception retain];
[self didConnect];
return false;
}
if (SOCKSVersion[0] != 5 || SOCKSVersion[1] != 0) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
request = [OFMutableData data];
[request addItems: "\x05\x01\x00\x03"
count: 4];
hostLength = (uint8_t)[_host UTF8StringLength];
[request addItem: &hostLength];
[request addItems: [_host UTF8String]
count: hostLength];
port[0] = _port >> 8;
port[1] = _port & 0xFF;
[request addItems: port
count: 2];
/* Use request as context to retain it */
[_socket asyncWriteBuffer: [request items]
length: [request count]
target: self
selector: @selector(socket:didSendSOCKS5Request:
bytesWritten:context:exception:)
context: request];
return false;
}
- (size_t)socket: (OFTCPSocket *)sock
didSendSOCKS5Request: (const void *)request
bytesWritten: (size_t)bytesWritten
context: (id)context
exception: (id)exception
{
if (exception != nil) {
_exception = [exception retain];
[self didConnect];
return 0;
}
[_socket asyncReadIntoBuffer: _buffer
exactLength: 4
target: self
selector: @selector(socket:didReadSOCKS5Response:
length:context:exception:)
context: nil];
return 0;
}
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5Response: (unsigned char *)response
length: (size_t)length
context: (id)context
exception: (id)exception
{
if (exception != nil) {
_exception = [exception retain];
[self didConnect];
return false;
}
if (response[0] != 5 || response[2] != 0) {
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
if (response[1] != 0) {
int errNo;
switch (response[1]) {
case 0x02:
errNo = EACCES;
break;
case 0x03:
errNo = ENETUNREACH;
break;
case 0x04:
errNo = EHOSTUNREACH;
break;
case 0x05:
errNo = ECONNREFUSED;
break;
case 0x06:
errNo = ETIMEDOUT;
break;
case 0x07:
errNo = EPROTONOSUPPORT;
break;
case 0x08:
errNo = EAFNOSUPPORT;
break;
default:
errNo = EPROTO;
break;
}
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: _socket
errNo: errNo];
[self didConnect];
return false;
}
/* Skip the rest of the response */
switch (response[3]) {
case 1: /* IPv4 */
[_socket asyncReadIntoBuffer: _buffer
exactLength: 4 + 2
target: self
selector: @selector(socket:
didReadSOCKS5Address:length:
context:exception:)
context: nil];
return false;
case 3: /* Domain name */
[_socket asyncReadIntoBuffer: _buffer
exactLength: 1
target: self
selector: @selector(socket:
didReadSOCKS5AddressLength:
length:context:exception:)
context: nil];
return false;
case 4: /* IPv6 */
[_socket asyncReadIntoBuffer: _buffer
exactLength: 16 + 2
target: self
selector: @selector(socket:
didReadSOCKS5Address:length:
context:exception:)
context: nil];
return false;
default:
_exception = [[OFConnectionFailedException alloc]
initWithHost: _host
port: _port
socket: self
errNo: EPROTONOSUPPORT];
[self didConnect];
return false;
}
return false;
}
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5Address: (unsigned char *)address
length: (size_t)length
context: (id)context
exception: (id)exception
{
_exception = [exception retain];
[self didConnect];
return false;
}
- (bool)socket: (OFTCPSocket *)sock
didReadSOCKS5AddressLength: (unsigned char *)addressLength
length: (size_t)length
context: (id)context
exception: (id)exception
{
if (exception != nil) {
_exception = [exception retain];
[self didConnect];
return false;
}
[_socket asyncReadIntoBuffer: _buffer
exactLength: addressLength[0] + 2
target: self
selector: @selector(socket:didReadSOCKS5Address:
length:context:exception:)
context: nil];
return false;
}
@end
@implementation OFTCPSocket
@synthesize SOCKS5Host = _SOCKS5Host, SOCKS5Port = _SOCKS5Port;
+ (void)setSOCKS5Host: (OFString *)host
{
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- (void)asyncConnectToHost: (OFString *)host
port: (uint16_t)port
target: (id)target
selector: (SEL)selector
context: (id)context
{
/* TODO: Support SOCKS5 */
/* TODO: Support SOCKS5 */
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- (void)asyncConnectToHost: (OFString *)host
port: (uint16_t)port
target: (id)target
selector: (SEL)selector
context: (id)context
{
void *pool = objc_autoreleasePoolPush();
[[[[OFTCPSocket_ConnectContext alloc]
initWithSocket: self
host: host
port: port
SOCKS5Host: _SOCKS5Host
SOCKS5Port: _SOCKS5Port
target: target
selector: selector
context: context] autorelease] start];
objc_autoreleasePoolPop(pool);
}
#ifdef OF_HAVE_BLOCKS
- (void)asyncConnectToHost: (OFString *)host
port: (uint16_t)port
block: (of_tcp_socket_async_connect_block_t)block
{
void *pool = objc_autoreleasePoolPush();
[[[[OFTCPSocket_ConnectContext alloc]
initWithSocket: self
host: host
port: port
SOCKS5Host: _SOCKS5Host
SOCKS5Port: _SOCKS5Port
block: block] autorelease] start];
objc_autoreleasePoolPop(pool);
}
#endif
- (uint16_t)bindToHost: (OFString *)host
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