3 files changed, 12 insertions, 3 deletions
diff --git a/src/config.c b/src/config.c
index 37f2908..60d4079 100644
--- a/src/config.c
+++ b/src/config.c
@@ -27,7 +27,8 @@ int m_config_index(lua_State* L){
       lua_pushinteger(L, *cc.value.c_int);
       break;
     case c_string:
-      lua_pushlstring(L, *cc.value.c_string, *cc.value.len);
+      if(*cc.value.c_string == NULL) lua_pushnil(L);
+      else lua_pushlstring(L, *cc.value.c_string, *cc.value.len);
       break;
     case c_number:
       lua_pushnumber(L, *cc.value.c_number);
@@ -63,7 +64,12 @@ int m_config_newindex(lua_State* L){
       *cc.value.c_int = lua_tointeger(L, 3);
       break;
     case c_string:
-      *cc.value.c_string = (char*)luaL_tolstring(L, 3, cc.value.len);
+      if(lua_isnil(L, 3)){
+        *cc.value.c_string = NULL;
+        *cc.value.len = 0;
+      } else {
+        *cc.value.c_string = (char*)luaL_tolstring(L, 3, cc.value.len);
+      }
       break;
     case c_number:
       *cc.value.c_number = lua_tonumber(L, 3);
diff --git a/src/net.h b/src/net.h
index 8c36057..f7e5d64 100644
--- a/src/net.h
+++ b/src/net.h
@@ -53,8 +53,9 @@ static const luaL_Reg net_function_list [] = {
 };
 
 extern char* _mimetypes;
+extern uint64_t _mimetypes_len;
 
 static struct config net_config[] = {
-  {.name = "mimetypes", .type = c_string, .value = {.c_string = &_mimetypes}},
+  {.name = "mimetypes", .type = c_string, .value = {.c_string = &_mimetypes, .len = &_mimetypes_len}},
   {.type = c_none}
 };
diff --git a/src/net/util.c b/src/net/util.c
index e8e54d0..efdbe75 100644
--- a/src/net/util.c
+++ b/src/net/util.c
@@ -408,8 +408,10 @@ parray_t* route_match(parray_t* paths, char* request, larray_t** _params){
 
 map_t* mime_type = NULL;
 char* _mimetypes = "/etc/mime.types";
+uint64_t _mimetypes_len = 15;
 
 void parse_mimetypes(){
+  if(_mimetypes == NULL || _mimetypes_len == 0) return;
   mime_type = map_init();
 
   FILE* fp = fopen(_mimetypes, "r");