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Testing tbb pipeline
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main.cc
/*
This file is part of ANHServer. For more information, visit http://swganh.com
Copyright (c) 2010 - 2011 ANH Studios
ANHServer is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ANHServer 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ANHServer. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstddef>
#include <functional>
#include <iostream>
#include <memory>
#include <boost/asio.hpp>
#include "zlib.h"
#include "anh/byte_buffer.h"
#include "anh/crc.h"
#include "anh/utilities.h"
using anh::ByteBuffer;
namespace asio = boost::asio;
using asio::ip::udp;
using boost::system::error_code;
using std::bind;
using std::function;
using std::make_pair;
using std::make_shared;
using std::shared_ptr;
const uint32_t CRC_TABLE[256] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
typedef function<void (
const udp::endpoint& /*remote_endpoint*/,
ByteBuffer /*message*/)> NetworkCallback;
uint32_t swgcrc(const char* source_string, uint32_t length, uint32_t seed) {
uint32_t crc = CRC_TABLE[(~seed) & 0xFF];
crc ^= 0x00FFFFFF;
uint32_t index = (seed >> 8) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
index = (seed >> 16) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
index = (seed >> 24) ^ crc;
crc = (crc >> 8) &0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
for (uint16_t i = 0; i < length; i++) {
index = (source_string[i]) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
}
return ~crc;
}
class UdpCallbackSocket {
public:
UdpCallbackSocket(
asio::io_service& io_service,
uint16_t listen_port,
NetworkCallback callback)
: callback_(callback)
, socket_(io_service, udp::endpoint(udp::v4(), listen_port))
, receive_buffer_(50000)
, bytes_received_(0)
, bytes_sent_(0)
{
startReceive();
}
void send(
shared_ptr<ByteBuffer> buffer,
const udp::endpoint& remote_endpoint)
{
socket_.async_send_to(
asio::buffer(buffer->data(), buffer->size()),
remote_endpoint,
[this, buffer] (const error_code& error, size_t bytes_transferred)
{
bytes_sent_ += bytes_transferred;
});
}
private:
void startReceive() {
socket_.async_receive_from(
asio::buffer(receive_buffer_),
remote_endpoint_,
[this] (const error_code& error, size_t bytes_transferred)
{
bytes_received_ += bytes_transferred;
ByteBuffer buffer(&receive_buffer_[0], bytes_transferred);
callback_(remote_endpoint_, std::move(buffer));
startReceive();
});
}
NetworkCallback callback_;
udp::socket socket_;
udp::endpoint remote_endpoint_;
std::vector<uint8_t> receive_buffer_;
uint64_t bytes_received_;
uint64_t bytes_sent_;
};
class LoginClient {
public:
LoginClient(udp::endpoint remote_endpoint)
: remote_endpoint_(remote_endpoint)
, connection_id_(0)
, crc_length_(0)
, max_udp_size_(0)
{}
const udp::endpoint& remote_endpoint() const { return remote_endpoint_; }
void remote_endpoint(const udp::endpoint& remote_endpoint) {
remote_endpoint_ = remote_endpoint;
}
uint32_t crc_length() const { return crc_length_; }
void crc_length(uint32_t crc_length) { crc_length_ = crc_length; }
uint32_t connection_id() const { return connection_id_; }
void connection_id(uint32_t connection_id) { connection_id_ = connection_id; }
uint32_t max_udp_size() const { return max_udp_size_; }
void max_udp_size(uint32_t max_udp_size) { max_udp_size_ = max_udp_size; }
private:
udp::endpoint remote_endpoint_;
uint32_t connection_id_;
uint32_t crc_length_;
uint32_t max_udp_size_;
};
class LoginServer {
public:
LoginServer()
: io_service_()
, socket_(nullptr)
, decompression_buffer_(496)
, server_seed_(0xDEADBABE)
, max_udp_size_(496)
, encryption_method_(1)
, seed_length_(4)
{}
void startup() {
socket_ = make_shared<UdpCallbackSocket>(
io_service_,
44990,
bind(
&LoginServer::handleMessage,
this,
std::placeholders::_1,
std::placeholders::_2));
}
void run() {
io_service_.run();
}
shared_ptr<LoginClient> findClient(const udp::endpoint& endpoint) const {
auto find_it = client_map_.find(endpoint);
if (find_it == client_map_.end()) {
return nullptr;
}
return find_it->second;
}
private:
void handleMessage(const udp::endpoint& address, ByteBuffer message) {
auto client = findClient(address);
if (client) {
handleClientMessage(client, message);
} else {
handleUnknownSource(address, message);
}
}
void handleClientMessage(
shared_ptr<LoginClient> client,
ByteBuffer message)
{
if (! validateCrc(client, message)) {
return;
}
uint16_t opcode_header = 0;
if (message.peek<uint8_t>() == 0) {
opcode_header = anh::bigToHost(message.read<uint16_t>());
}
decrypt(client, message);
uint8_t compression_bit = message.peekAt<uint8_t>(message.size() + 1);
message.resize(message.size() - 1);
if (compression_bit != 0) {
decompress(&zstream_, message);
}
}
void handleUnknownSource(
const udp::endpoint& address,
ByteBuffer message)
{
std::cout << "Received message from unknown source: \n\n" << message << "\n";
if (anh::bigToHost(message.read<uint16_t>()) == 0x0001) {
auto new_client = make_shared<LoginClient>(address);
client_map_.insert(make_pair(address, new_client));
new_client->crc_length(anh::bigToHost(message.read<uint32_t>()));
new_client->connection_id(anh::bigToHost(message.read<uint32_t>()));
new_client->max_udp_size(anh::bigToHost(message.read<uint32_t>()));
auto session_response = make_shared<ByteBuffer>();
session_response->write<uint16_t>(anh::hostToBig<uint16_t>(2));
session_response->write<uint32_t>(anh::hostToBig(new_client->connection_id()));
session_response->write<uint32_t>(anh::hostToBig(server_seed_));
session_response->write<uint8_t>(new_client->crc_length());
session_response->write<uint8_t>(encryption_method_);
session_response->write<uint8_t>(seed_length_);
session_response->write<uint32_t>(anh::hostToBig(max_udp_size_));
std::cout << "Sending response: \n\n" << *session_response << "\n";
socket_->send(session_response, address);
}
}
bool validateCrc(shared_ptr<LoginClient> client, ByteBuffer& message) {
uint32_t crc_length = client->crc_length();
if (crc_length > 0) {
uint32_t packetCrc = swgcrc(reinterpret_cast<const char*>(message.data()), message.size() - crc_length, server_seed_);
std::cout << std::hex << packetCrc << "\n";
uint32_t testCrc = 0;
uint32_t mask = 0;
uint32_t pullbyte = 0;
const unsigned char* data = message.data();
data += (message.size() - crc_length);
for (uint32_t i = 0; i < crc_length; ++i) {
pullbyte = data[i];
testCrc |= (pullbyte << (((crc_length - 1) - i) * 8));
mask <<= 8;
mask |= 0xFF;
}
packetCrc &= mask;
if (packetCrc != testCrc) {
return false;
}
message.resize(message.size() - crc_length);
return true;
}
return false;
}
void decrypt(shared_ptr<LoginClient> client, ByteBuffer& message) {
uint32_t tmp_seed = 0;
uint32_t seed = server_seed_;
uint32_t block_count = (message.size() / 4);
uint32_t byte_count = (message.size() % 4);
unsigned char* data = message.raw();
for (uint32_t i = 0; i < block_count; ++i) {
tmp_seed = (reinterpret_cast<uint32_t*>(data))[i];
(reinterpret_cast<uint32_t*>(data))[i] ^= seed;
seed = tmp_seed;
}
for (uint32_t i = block_count * 4; i < message.size(); ++i) {
data[i] ^= seed;
}
}
void decompress(z_stream* stream, ByteBuffer& message) {
stream->zalloc = Z_NULL;
stream->zfree = Z_NULL;
stream->opaque = Z_NULL;
stream->avail_in = Z_NULL;
stream->next_in = Z_NULL;
inflateInit(stream);
stream->next_in = reinterpret_cast<Bytef*>(message.raw());
stream->avail_in = message.size();
stream->next_out = reinterpret_cast<Bytef*>(&decompression_buffer_[0]);
stream->avail_out = decompression_buffer_.capacity();
inflate(stream, Z_FINISH);
message.swap(ByteBuffer(decompression_buffer_.data(), stream->total_out));
inflateEnd(stream);
}
typedef std::map<udp::endpoint, shared_ptr<LoginClient>> LoginClientMap;
LoginClientMap client_map_;
asio::io_service io_service_;
z_stream zstream_;
shared_ptr<UdpCallbackSocket> socket_;
std::vector<uint8_t> decompression_buffer_;
uint32_t server_seed_;
uint32_t max_udp_size_;
uint8_t encryption_method_;
uint8_t seed_length_;
};
int main() {
try {
LoginServer server;
server.startup();
server.run();
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 0;
}
Raw
packet.h
/*
This file is part of ANHServer. For more information, visit http://swganh.com
Copyright (c) 2010 - 2011 ANH Studios
ANHServer is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ANHServer 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ANHServer. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LOGIN_DUMMY_PACKET_H_
#define LOGIN_DUMMY_PACKET_H_
#include <boost/asio.hpp>
#include "anh/byte_buffer.h"
class Packet {
public:
private:
boost::asio::ip::udp::endpoint endpoint;
};
#endif // LOGIN_DUMMY_PACKET_H_
Raw
soe_pipeline.cc
/*
This file is part of ANHServer. For more information, visit http://swganh.com
Copyright (c) 2010 - 2011 ANH Studios
ANHServer is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ANHServer 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ANHServer. If not, see <http://www.gnu.org/licenses/>.
*/
#include "soe_pipeline.h"
#include <iostream>
using std::cout;
const uint32_t CRC_TABLE[256] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
void* IncomingMessageFilter::operator()(void* item) {
}
void* CrcFilter::operator()(void* item) {
anh::ByteBuffer& message = *static_cast<anh::ByteBuffer*>(item);
uint32_t packetCrc = crc_(reinterpret_cast<const char*>(message.data()), message.size() - crc_length_, crc_seed_);
uint32_t testCrc = 0;
uint32_t mask = 0;
uint32_t pullbyte = 0;
const unsigned char* data = message.data();
data += (message.size() - crc_length_);
for (uint32_t i = 0; i < crc_length_; ++i) {
pullbyte = data[i];
testCrc |= (pullbyte << (((crc_length_ - 1) - i) * 8));
mask <<= 8;
mask |= 0xFF;
}
packetCrc &= mask;
if (packetCrc != testCrc) {
return NULL;
}
message.resize(message.size() - crc_length_);
return &message;
}
uint32_t CrcFilter::crc_(
const char* source_string,
uint32_t length,
uint32_t seed) const
{
uint32_t crc = CRC_TABLE[(~seed) & 0xFF];
crc ^= 0x00FFFFFF;
uint32_t index = (seed >> 8) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
index = (seed >> 16) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
index = (seed >> 24) ^ crc;
crc = (crc >> 8) &0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
for (uint16_t i = 0; i < length; i++) {
index = (source_string[i]) ^ crc;
crc = (crc >> 8) & 0x00FFFFFF;
crc ^= CRC_TABLE[index & 0xFF];
}
return ~crc;
}
void* DecryptionFilter::operator()(void* item) {
anh::ByteBuffer& message = *static_cast<anh::ByteBuffer*>(item);
uint32_t tmp_seed = 0;
uint32_t seed = crc_seed_;
uint32_t block_count = (message.size() / 4);
uint32_t byte_count = (message.size() % 4);
unsigned char* data = message.raw();
for (uint32_t i = 0; i < block_count; ++i) {
tmp_seed = (reinterpret_cast<uint32_t*>(data))[i];
(reinterpret_cast<uint32_t*>(data))[i] ^= seed;
seed = tmp_seed;
}
for (uint32_t i = block_count * 4; i < message.size(); ++i) {
data[i] ^= seed;
}
return &message;
}
void* DecompressionFilter::operator()(void* item) {
anh::ByteBuffer& message = *static_cast<anh::ByteBuffer*>(item);
zstream_.zalloc = Z_NULL;
zstream_.zfree = Z_NULL;
zstream_.opaque = Z_NULL;
zstream_.avail_in = Z_NULL;
zstream_.next_in = Z_NULL;
inflateInit(&zstream_);
zstream_.next_in = reinterpret_cast<Bytef*>(message.raw());
zstream_.avail_in = message.size();
zstream_.next_out = reinterpret_cast<Bytef*>(&decompression_buffer_[0]);
zstream_.avail_out = decompression_buffer_.capacity();
inflate(&zstream_, Z_FINISH);
message.swap(anh::ByteBuffer(decompression_buffer_.data(), zstream_.total_out));
inflateEnd(&zstream_);
cout << "Processed message \n\n" << message << "\n";
return &message;
}
void* OutputFilter::operator()(void* item) {
anh::ByteBuffer& message = *static_cast<anh::ByteBuffer*>(item);
cout << "Processed message \n\n" << message << "\n";
return nullptr;
}
Raw
soe_pipeline.h
/*
This file is part of ANHServer. For more information, visit http://swganh.com
Copyright (c) 2010 - 2011 ANH Studios
ANHServer is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ANHServer 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with ANHServer. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LOGIN_DUMMY_SOE_PIPELINE_H_
#define LOGIN_DUMMY_SOE_PIPELINE_H_
#include <cstdint>
#include <memory>
#include <tbb/pipeline.h>
#include <zlib.h>
#include "anh/byte_buffer.h"
class IncomingMessageFilter : public tbb::filter {
public:
IncomingMessageFilter()
: tbb::filter(true)
{}
~IncomingMessageFilter() {}
void* operator()(void* item);
};
class CrcFilter : public tbb::filter {
public:
CrcFilter(uint32_t crc_seed, uint32_t crc_length)
: tbb::filter(false)
, crc_seed_(crc_seed)
, crc_length_(crc_length_)
{}
~CrcFilter() {}
void* operator()(void* item);
private:
uint32_t crc_(
const char* source_string,
uint32_t length,
uint32_t seed) const;
uint32_t crc_seed_;
uint32_t crc_length_;
};
class DecryptionFilter : public tbb::filter {
public:
DecryptionFilter(uint32_t crc_seed)
: tbb::filter(false)
, crc_seed_(crc_seed)
{}
~DecryptionFilter() {}
void* operator()(void* item);
private:
uint32_t crc_seed_;
};
class DecompressionFilter : public tbb::filter {
public:
DecompressionFilter(uint32_t max_packet_size)
: tbb::filter(true)
, max_packet_size_(max_packet_size)
{
decompression_buffer_.reserve(max_packet_size);
}
~DecompressionFilter() {}
void* operator()(void* item);
private:
z_stream zstream_;
std::vector<uint8_t> decompression_buffer_;
uint32_t max_packet_size_;
};
class OutputFilter : public tbb::filter {
public:
OutputFilter(uint32_t max_packet_size)
: tbb::filter(true)
{}
~OutputFilter() {}
void* operator()(void* item);
};
#endif // LOGIN_DUMMY_SOE_PIPELINE_H_
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