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extern "C" {
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
}
#include <string.h>
#include <string>
#include <map>
//nanomsg things
#include <nn.h>
#include <tcp.h>
#include <pair.h>
#include <ipc.h>
#include <pipeline.h>
#include <pubsub.h>
#include <survey.h>
#include <bus.h>
#include "load_net.hpp"
#include "../util/hashmap.h"
#include "stream.hpp"
std::map<int,std::map<std::string,int>> netfuncs;
// stream:readInt()
int lstream_readInt(lua_State* L){//self
lua_getfield(L,-1,"data");//self,lightuserdata
if(!lua_islightuserdata(L,-1)){
lua_pushstring(L,"data field was not light userdata");
lua_error(L);
}
struct stream* s = (struct stream*)lua_touserdata(L,-1);//self,lightuserdata
printf("Stream in readint was %p\n",s);
stream_print(s);
int i = stream_readInt(s);
printf("In readint, int read from stream was %d\n",i);
lua_pop(L,2);//
lua_pushinteger(L,i);//int
return 1;
}
// stream:writeInt(number)
int lstream_writeInt(lua_State* L){//self,number
lua_getfield(L,-2,"data");//self,number,lightuserdata
struct stream* s = (struct stream*)lua_touserdata(L,-1);//self,number,lightuserdata
printf("Stream in writeInt was %p\n",s);
stream_print(s);
int num = lua_tointeger(L,-2);//self,number,lightuserdata
printf("Integer was %d\n",num);
stream_writeInt(s,num);
lua_pop(L,3);//
return 0;
}
void gameloop_net(lua_State* L){
//printf("Doing net of gameloop\n");
for(std::map<int,std::map<std::string,int>>::iterator it = netfuncs.begin(); it != netfuncs.end(); ++it){
char* buf = NULL;
int bytes = nn_recv(it->first, &buf, NN_MSG,NN_DONTWAIT);
if(bytes < 0 && nn_errno() != EAGAIN){
lua_pushstring(L,"Failed to receive");
lua_error(L);
}else if( bytes < 0 && nn_errno() == EAGAIN){
//do nothing
}else{
//find how long until the first null character
struct stream* stream = stream_create();
stream->length = bytes;
stream->data = buf;
stream_print(stream);
char* msg = stream_readString(stream);
std::map<std::string,int> themap = it->second;
std::string s = std::string(msg);
std::map<std::string,int>::iterator in = themap.find(s);
if(in != themap.end()){
lua_rawgeti(L,LUA_REGISTRYINDEX,(*in).second);
lua_newtable(L);
lua_pushlightuserdata(L,stream);
lua_setfield(L,-2,"data");
luaL_getmetatable(L,"net.stream");
lua_setmetatable(L,-2);
lua_call(L,1,0);
}
nn_freemsg(buf);
free(stream);//We manually set stream->data so free_stream would crash here
}
}
}
int bindsocket(lua_State*L){
const char* s = lua_tostring(L,-1);
lua_pushstring(L,"fd");
lua_gettable(L,-2);
lua_pop(L,2);
int fd = lua_tonumber(L,-1);
int id = nn_bind(fd,s);
if(id < 0){
const char* errstr = nn_strerror(nn_errno());
char* failmsg = (char*)"Failed to bind socket: ";
int faillen = strlen(failmsg + 2);
char buf[faillen + strlen(errstr)];
sprintf(buf,"%s%s\n",failmsg,errstr);
lua_pushstring(L,buf);
lua_error(L);
}
lua_pushstring(L,"endpoint");
lua_pushinteger(L,id);
lua_settable(L,-3);
netfuncs[fd] = std::map<std::string,int>();
return 0;
}
int connectsocket(lua_State* L){
const char* s = lua_tostring(L,-1);
lua_pushstring(L,"fd");
lua_gettable(L,-2);
int fd = lua_tonumber(L,-1);
lua_pop(L,2);
int id = nn_connect(fd,s);
lua_pushstring(L,"endpoint");
lua_pushinteger(L,id);
lua_settable(L,-3);
netfuncs[fd] = std::map<std::string,int>();
return 0;
}
//socket:send("name",function(stream))
int send(lua_State* L){
const char* data = lua_tostring(L,-2);//socket,"name",function(stream)
lua_pushstring(L,"fd");//socket,"name",function(stream),"fd"
lua_gettable(L,-4);//socket,"name",function(stream),int_socketdescriptor
int fd = lua_tonumber(L,-1);//socket,"name",function(stream),int_socketdescriptor
lua_pop(L,1);//socket,"name",function(stream)
int dlen = strlen(data);
struct stream* s = stream_create();
stream_writeString(s,data,dlen);
lua_newtable(L);//socket,"name",function(stream),streamtable
luaL_getmetatable(L,"net.stream");//socket,"name",function(stream),streamtable,net.stream
lua_setmetatable(L,-2);//socket,"name",function(stream),streamtable
lua_pushlightuserdata(L,s);//socket,"name",function(stream),streamtable,lightudata
lua_setfield(L,-2,"data");//socket,"name",function(stream),streamtable
lua_call(L,1,0);//socket,"name"
lua_pop(L,2);//
int err = nn_send(fd,s->data,s->length,0);
stream_free(s);
if(err < 0){
const char* errstr = nn_strerror(nn_errno());
char* failmsg = (char*)"Failed to bind socket: ";
int faillen = strlen(failmsg + 2);
char buf[faillen + strlen(errstr)];
sprintf(buf,"%s%s\n",failmsg,errstr);
lua_pushstring(L,buf);
lua_error(L);
}
return 0;
}
//LUA:
//socket:receive(s_name,function(stream))
int netreceive(lua_State* L){
const char* name = lua_tostring(L,-2);
int slen = strlen(name);
std::string s = std::string(name);
int func = luaL_ref(L,LUA_REGISTRYINDEX);
lua_pushstring(L,"fd");
lua_gettable(L,-2);
int fd = lua_tonumber(L,-1);
lua_pop(L,1);
netfuncs[fd].insert(std::pair<std::string, int>(s,func));
return 0;
}
int socketFactory(lua_State*L){
int domain = luaL_optint(L,-1,0);
int type = luaL_optint(L,-2,0);
int c = nn_socket(AF_SP,NN_PAIR);
if(c < 0){
lua_pushstring(L,"Failed to create socket");
lua_error(L);
}
luaL_getmetatable(L,"net.socket");
lua_setmetatable(L,-2);
lua_newtable(L);
lua_pushstring(L,"fd");
lua_pushinteger(L,c);
lua_settable(L,-3);
lua_pushstring(L,"bind");
lua_pushcfunction(L,bindsocket);
lua_settable(L,-3);
lua_pushstring(L,"connect");
lua_pushcfunction(L,connectsocket);
lua_settable(L,-3);
lua_pushstring(L,"send");
lua_pushcfunction(L,send);
lua_settable(L,-3);
lua_pushstring(L,"receive");
lua_pushcfunction(L,netreceive);
lua_settable(L,-3);
return 1;
}
static const struct luaL_Reg socket_m[] = {
{"bind", bindsocket},
{NULL,NULL}
};
#define set_const(l,x) lua_pushstring(l,#x);lua_pushinteger(l,x);lua_settable(l,-3);
void loadNetLibs(lua_State* L){
//A table to hold all our net funcs
lua_newtable(L);
//Push some enums
set_const(L,AF_SP);
set_const(L,AF_SP_RAW);
set_const(L,NN_PROTO_PAIR);
set_const(L,NN_PAIR);
set_const(L,NN_SUB);
set_const(L,NN_SUB_SUBSCRIBE);
set_const(L,NN_PUB);
set_const(L,NN_SUB_UNSUBSCRIBE);
set_const(L,NN_PUSH);
set_const(L,NN_PULL);
set_const(L,NN_PROTO_PIPELINE);
set_const(L,NN_PROTO_SURVEY);
set_const(L,NN_SURVEYOR);
set_const(L,NN_RESPONDENT);
set_const(L,NN_SURVEYOR_DEADLINE);
set_const(L,NN_TCP_NODELAY);
set_const(L,NN_TCP);
set_const(L,NN_PROTO_BUS);
set_const(L,NN_BUS);
set_const(L,NN_DONTWAIT);
set_const(L,PROTO_SP);
set_const(L,SP_HDR);
lua_pushstring(L,"create_socket");
lua_pushcfunction(L,socketFactory);
lua_settable(L,-3);
//Set the table to gobal "net"
lua_setglobal(L,"net");
//Create the metatable for streams
luaL_newmetatable(L,"net.stream"); //net.stream
lua_newtable(L);
lua_pushcfunction(L,lstream_readInt);//net.stream,{},readInt()
lua_setfield(L,-2,"readInt");//net.stream,{}
lua_pushcfunction(L,lstream_writeInt);//net.stream,{},writeInt()
lua_setfield(L,-2,"writeInt");//net.stream,{}
lua_setfield(L,-2,"__index");
//Create the metatable for sockets
luaL_newmetatable(L,"net.socket");
lua_pushvalue(L,-1);
lua_setfield(L,-2,"__index");
luaL_register(L,NULL,socket_m);
}
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