From 92be962c748d5a45da4bf207a7b17c2b25ca31cd Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 15 Aug 2020 14:59:51 +0200
Subject: Added lua state to requests

---
 plop.c    |  5 ++---
 request.c | 16 ++++++++++++----
 request.h | 10 +++++++---
 3 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/plop.c b/plop.c
index 8665ec9..45d913f 100644
--- a/plop.c
+++ b/plop.c
@@ -13,7 +13,6 @@
 
 #include <lauxlib.h>
 #include <lua.h>
-#include <lualib.h>
 
 #include "http.h"
 #include "request.h"
@@ -104,7 +103,7 @@ int handle_client(lua_State * L, struct pollfd * pfd, struct request ** request,
 		return -1; // TODO: Handle errors properly
 	}
 
-	if (-1 == parse_request(pfd->fd, request))
+	if (-1 == parse_request(L, pfd->fd, request))
 	{
 		respond_only_status(pfd->fd, STATUS_BAD_REQUEST);
 		return -1; // TODO: Handle errors properly
@@ -150,7 +149,7 @@ int handle_client(lua_State * L, struct pollfd * pfd, struct request ** request,
 
 	if (NULL != *request)
 	{
-		free_request(*request);
+		free_request(L, *request);
 		*request = NULL;
 	}
 
diff --git a/request.c b/request.c
index f6f8a78..e8f47b0 100644
--- a/request.c
+++ b/request.c
@@ -7,6 +7,9 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <lauxlib.h>
+#include <lua.h>
+
 #include "http.h"
 
 static const int REQUEST_DATA_SIZE = 4096;
@@ -15,7 +18,7 @@ static const int MAX_HEADERS = 30;
 /// Allocates and initializes request structure.
 /// \return Pointer to initialized request or NULL in case of an error
 /// \see /free_request
-struct request * new_request(void)
+struct request * new_request(lua_State * L)
 {
 	struct request * request = malloc(sizeof(struct request));
 
@@ -35,13 +38,16 @@ struct request * new_request(void)
 		return NULL;
 	}
 
+	request->lua = lua_newthread(L);
+	request->reference = luaL_ref(L, LUA_REGISTRYINDEX);
+
 	return request;
 }
 
 /// Releases memory used by the request and the request itself.
 /// \param request Request to free
 /// \see /new_request
-void free_request(struct request * request)
+void free_request(lua_State * L, struct request * request)
 {
 	if (NULL != request->data)
 	{
@@ -53,6 +59,8 @@ void free_request(struct request * request)
 		free(request->headerv);
 	}
 
+	luaL_unref(L, LUA_REGISTRYINDEX, request->reference);
+
 	free(request);
 }
 
@@ -60,11 +68,11 @@ void free_request(struct request * request)
 /// \param fd Client socket
 /// \param request Pointer to current request context of handled client
 /// \return Number of bytes parsed, -1 if an error occured or 0 if expects more data
-int parse_request(const int fd, struct request ** request)
+int parse_request(lua_State * L, const int fd, struct request ** request)
 {
 	if (NULL == *request)
 	{
-		*request = new_request();
+		*request = new_request(L);
 		if (NULL == *request)
 		{
 			return -1;
diff --git a/request.h b/request.h
index a302d61..79aca75 100644
--- a/request.h
+++ b/request.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <lua.h>
+
 struct span
 {
 	int start;
@@ -18,6 +20,8 @@ struct request
 	char * data;
 	int length;
 	int position;
+	lua_State * lua;
+	int reference;
 	struct span method;
 	struct span path;
 	struct span version;
@@ -26,10 +30,10 @@ struct request
 	struct span body;
 };
 
-struct request * new_request(void);
-void free_request(struct request *);
+struct request * new_request(lua_State *);
+void free_request(lua_State *, struct request *);
 
-int parse_request(int, struct request **);
+int parse_request(lua_State *, int, struct request **);
 
 int parse_step_method(struct request *);
 int parse_step_path(struct request *);
-- 
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