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fix(userspace/falco): pop output fields lua table and correctly check parameters on the stack

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Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>
This commit is contained in:
Leonardo Di Donato
2019-09-23 18:48:13 +00:00
committed by Leo Di Donato
parent 54b3aa9129
commit b19cb3678f
3 changed files with 26 additions and 40 deletions
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30
userspace/engine/formats.cpp
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@@ -265,17 +265,15 @@ int falco_formats::format_event (lua_State *ls)
return 1;
}
#include <iostream>
int falco_formats::resolve_tokens(lua_State *ls)
{
// if(!lua_isstring(ls, -1) ||
// !lua_isstring(ls, -2) ||
// !lua_islightuserdata(ls, -3))
// {
// lua_pushstring(ls, "Invalid arguments passed to resolve_tokens()");
// lua_error(ls);
// }
if(!lua_isstring(ls, -1) ||
!lua_isstring(ls, -2) ||
!lua_islightuserdata(ls, -3))
{
lua_pushstring(ls, "Invalid arguments passed to resolve_tokens()");
lua_error(ls);
}
gen_event *evt = (gen_event *)lua_topointer(ls, 1);
string source = luaL_checkstring(ls, 2);
const char *format = (char *)lua_tostring(ls, 3);
@@ -292,19 +290,15 @@ int falco_formats::resolve_tokens(lua_State *ls)
json_event_formatter json_formatter(s_engine->json_factory(), sformat);
values = json_formatter.tomap((json_event*) evt);
}
// todo(leodido, fntlnz) > check explicitly for k8s_audit, otherwise throw exception
lua_newtable(ls);
int top = lua_gettop(ls);
for(map<string, string>::iterator it = values.begin(); it != values.end(); ++it)
for(auto const& v : values)
{
std::cout << it->first << ":"<< it->second << ", ";
const char *key = it->first.c_str();
const char *value = it->second.c_str();
lua_pushlstring(ls, key, it->first.size());
lua_pushlstring(ls, value, it->second.size());
lua_settable(ls, top);
lua_pushstring(ls, v.first.c_str());
lua_pushstring(ls, v.second.c_str());
lua_settable(ls, -3);
}
std::cout << std::endl;
return 1;
}