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Copy pathluasocket.cpp
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349 lines (337 loc) · 9.54 KB
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Copy pathluasocket.cpp
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349 lines (337 loc) · 9.54 KB
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#include "Console.h"
#include "Export.h"
#include "PluginManager.h"
#include "PluginLua.h"
#include "DataDefs.h"
#include <vector>
#include <string>
#include <map>
#include <memory>
#include <PassiveSocket.h>
#include <ActiveSocket.h>
#include "MiscUtils.h"
#include "LuaTools.h"
#include "DataFuncs.h"
#include <stdexcept> //todo convert errors to lua-errors and co. Then remove this
using namespace DFHack;
using namespace df::enums;
struct server
{
CPassiveSocket *socket;
std::map<int,CActiveSocket*> clients;
int last_client_id;
void close();
};
std::map<int,server> servers;
typedef std::map<int,CActiveSocket*> clients_map;
clients_map clients; //free clients, i.e. non-server spawned clients
DFHACK_PLUGIN("luasocket");
void server::close()
{
for(auto it=clients.begin();it!=clients.end();it++)
{
CActiveSocket* sock=it->second;
sock->Close();
delete sock;
}
clients.clear();
socket->Close();
delete socket;
}
std::pair<CActiveSocket*,clients_map*> get_client(int server_id,int client_id)
{
std::map<int,CActiveSocket*>* target=&clients;
if(server_id>0)
{
if(servers.count(server_id)==0)
{
throw std::runtime_error("Server with this id does not exist");
}
server &cur_server=servers[server_id];
target=&cur_server.clients;
}
if(target->count(client_id)==0)
{
throw std::runtime_error("Client does with this id not exist");
}
CActiveSocket *sock=(*target)[client_id];
return std::make_pair(sock,target);
}
void handle_error(CSimpleSocket::CSocketError err,bool skip_timeout=true)
{
if (err == CSimpleSocket::SocketSuccess)
return;
if (err == CSimpleSocket::SocketTimedout && skip_timeout)
return;
if (err == CSimpleSocket::SocketEwouldblock && skip_timeout)
return;
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
static int lua_socket_bind(std::string ip,int port)
{
static int server_id=0;
CPassiveSocket* sock=new CPassiveSocket;
if(!sock->Initialize())
{
CSimpleSocket::CSocketError err=sock->GetSocketError();
delete sock;
handle_error(err,false);
}
sock->SetBlocking();
if(!sock->Listen(ip.c_str(),port))
{
handle_error(sock->GetSocketError(),false);
}
server_id++;
server& cur_server=servers[server_id];
cur_server.socket=sock;
cur_server.last_client_id=0;
return server_id;
}
static int lua_server_accept(int id,bool fail_on_timeout)
{
if(servers.count(id)==0)
{
throw std::runtime_error("Server not bound");
}
server &cur_server=servers[id];
CActiveSocket* sock=cur_server.socket->Accept();
if(!sock)
{
handle_error(cur_server.socket->GetSocketError(),!fail_on_timeout);
return 0;
}
else
{
cur_server.last_client_id++;
cur_server.clients[cur_server.last_client_id]=sock;
return cur_server.last_client_id;
}
}
static void lua_client_close(int server_id,int client_id)
{
auto info=get_client(server_id,client_id);
CActiveSocket *sock=info.first;
std::map<int,CActiveSocket*>* target=info.second;
target->erase(client_id);
CSimpleSocket::CSocketError err=CSimpleSocket::SocketSuccess;
if(!sock->Close())
err=sock->GetSocketError();
delete sock;
if(err!=CSimpleSocket::SocketSuccess)
{
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
}
static void lua_server_close(int server_id)
{
if(servers.count(server_id)==0)
{
throw std::runtime_error("Server with this id does not exist");
}
server &cur_server=servers[server_id];
try{
cur_server.close();
}
catch(...)
{
servers.erase(server_id);
throw;
}
}
static std::string lua_client_receive(int server_id,int client_id,int bytes,std::string pattern,bool fail_on_timeout)
{
auto info=get_client(server_id,client_id);
CActiveSocket *sock=info.first;
if(bytes>0)
{
if(sock->Receive(bytes)<=0)
{
throw std::runtime_error(sock->DescribeError());
}
return std::string((char*)sock->GetData(),bytes);
}
else
{
std::string ret;
if(pattern=="*a") //??
{
while(true)
{
int received=sock->Receive(1);
if(received<0)
{
handle_error(sock->GetSocketError(),!fail_on_timeout);
return "";//maybe return partial string?
}
else if(received==0)
{
break;
}
ret+=(char)*sock->GetData();
}
return ret;
}
else if (pattern=="" || pattern=="*l")
{
while(true)
{
if(sock->Receive(1)<=0)
{
handle_error(sock->GetSocketError(),!fail_on_timeout);
return "";//maybe return partial string?
}
char rec=(char)*sock->GetData();
if(rec=='\n')
break;
ret+=rec;
}
return ret;
}
else
{
throw std::runtime_error("Unsupported receive pattern");
}
}
}
static void lua_client_send(int server_id,int client_id,std::string data)
{
if(data.size()==0)
return;
std::map<int,CActiveSocket*>* target=&clients;
if(server_id>0)
{
if(servers.count(server_id)==0)
{
throw std::runtime_error("Server with this id does not exist");
}
server &cur_server=servers[server_id];
target=&cur_server.clients;
}
if(target->count(client_id)==0)
{
throw std::runtime_error("Client does with this id not exist");
}
CActiveSocket *sock=(*target)[client_id];
if(size_t(sock->Send((const uint8_t*)data.c_str(),data.size()))!=data.size())
{
throw std::runtime_error(sock->DescribeError());
}
}
static int lua_socket_connect(std::string ip,int port)
{
static int last_client_id=0;
CActiveSocket* sock=new CActiveSocket;
if(!sock->Initialize())
{
CSimpleSocket::CSocketError err=sock->GetSocketError();
delete sock;
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
if(!sock->Open(ip.c_str(),port))
{
CSimpleSocket::CSocketError err=sock->GetSocketError();
delete sock;
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
sock->SetNonblocking();
last_client_id++;
clients[last_client_id]=sock;
return last_client_id;
}
CSimpleSocket* get_socket(int server_id, int client_id)
{
std::map<int, CActiveSocket*>* target = &clients;
if (server_id>0)
{
if (servers.count(server_id) == 0)
{
throw std::runtime_error("Server with this id does not exist");
}
server &cur_server = servers[server_id];
if (client_id == -1)
{
return cur_server.socket;
}
target = &cur_server.clients;
}
if (target->count(client_id) == 0)
{
throw std::runtime_error("Client does with this id not exist");
}
CActiveSocket *sock = (*target)[client_id];
return sock;
}
static void lua_socket_set_timeout(int server_id,int client_id,int32_t sec,int32_t msec)
{
CSimpleSocket *sock = get_socket(server_id, client_id);
sock->SetConnectTimeout(sec,msec);
if (!sock->SetReceiveTimeout(sec, msec) ||
!sock->SetSendTimeout(sec, msec))
{
CSimpleSocket::CSocketError err = sock->GetSocketError();
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
}
static bool lua_socket_select(int server_id, int client_id, int32_t sec, int32_t msec)
{
CSimpleSocket *sock = get_socket(server_id, client_id);
return sock->Select(sec, msec);
}
static void lua_socket_set_blocking(int server_id, int client_id, bool value)
{
CSimpleSocket *sock = get_socket(server_id, client_id);
bool ok;
if (value)
{
ok = sock->SetBlocking();
}
else
{
ok = sock->SetNonblocking();
}
if (!ok)
{
CSimpleSocket::CSocketError err = sock->GetSocketError();
throw std::runtime_error(CSimpleSocket::DescribeError(err));
}
}
static bool lua_socket_is_blocking(int server_id, int client_id)
{
CSimpleSocket *sock = get_socket(server_id, client_id);
return !sock->IsNonblocking();
}
DFHACK_PLUGIN_LUA_FUNCTIONS {
DFHACK_LUA_FUNCTION(lua_socket_bind), //spawn a server
DFHACK_LUA_FUNCTION(lua_socket_connect),//spawn a client (i.e. connection)
DFHACK_LUA_FUNCTION(lua_socket_select),
DFHACK_LUA_FUNCTION(lua_socket_set_blocking),
DFHACK_LUA_FUNCTION(lua_socket_is_blocking),
DFHACK_LUA_FUNCTION(lua_socket_set_timeout),
DFHACK_LUA_FUNCTION(lua_server_accept),
DFHACK_LUA_FUNCTION(lua_server_close),
DFHACK_LUA_FUNCTION(lua_client_close),
DFHACK_LUA_FUNCTION(lua_client_send),
DFHACK_LUA_FUNCTION(lua_client_receive),
DFHACK_LUA_END
};
DFhackCExport command_result plugin_init ( color_ostream &out, std::vector <PluginCommand> &commands)
{
return CR_OK;
}
DFhackCExport command_result plugin_shutdown ( color_ostream &out )
{
for(auto it=clients.begin();it!=clients.end();it++)
{
CActiveSocket* sock=it->second;
sock->Close();
delete sock;
}
clients.clear();
for(auto it=servers.begin();it!=servers.end();it++)
{
it->second.close();
}
servers.clear();
return CR_OK;
}
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