added proper index function for lm_process_t in lua

Author: rdbo

bindings/lua/src/types.c

@@ -26,15 +26,36 @@
 #include <lualib.h>
 #include "types.h"
 
+#define STREQUAL(a, b) (!strcmp(a, b))
+#define LM_PROCESS_META "lm_process_t"
+
 int lua_lm_process_index(lua_State *L)
 {
-	lua_pushinteger(L, 1337);
+	lm_process_t *udata = (lm_process_t *)luaL_checkudata(L, 1, LM_PROCESS_META);
+	const char *entry = luaL_checkstring(L, 2);
+
+	if (STREQUAL(entry, "pid")) {
+		lua_pushinteger(L, (lua_Integer)udata->pid);
+	} else if (STREQUAL(entry, "ppid")) {
+		lua_pushinteger(L, (lua_Integer)udata->ppid);
+	} else if (STREQUAL(entry, "bits")) {
+		lua_pushinteger(L, (lua_Integer)udata->bits);
+	} else if (STREQUAL(entry, "start_time")) {
+		lua_pushinteger(L, (lua_Integer)udata->start_time);
+	} else if (STREQUAL(entry, "path")) {
+		lua_pushstring(L, udata->path);
+	} else if (STREQUAL(entry, "name")) {
+		lua_pushstring(L, udata->name);
+	} else {
+		lua_pushnil(L);
+	}
+
 	return 1;
 }
 
 int lua_lm_process_tostring(lua_State *L)
 {
-	lm_process_t *udata = (lm_process_t *)luaL_checkudata(L, 1, "lm_process_t");
+	lm_process_t *udata = (lm_process_t *)luaL_checkudata(L, 1, LM_PROCESS_META);
 
 	lua_pushfstring(L, "lm_process_t(pid: %d, ppid: %d, bits: %d, name: \"%s\", path: \"%s\", start_time: %p)", udata->pid, udata->ppid, udata->bits, udata->name, udata->path, udata->start_time);
 
@@ -44,13 +65,13 @@ int lua_lm_process_tostring(lua_State *L)
 void lua_create_lm_process(lua_State *L)
 {
 	lm_process_t *udata = lua_newuserdata(L, sizeof(lm_process_t));
-	luaL_getmetatable(L, "lm_process_t");
+	luaL_getmetatable(L, LM_PROCESS_META);
 	lua_setmetatable(L, lua_gettop(L) - 1);
 }
 
 void lua_define_lm_process(lua_State *L)
 {
-	luaL_newmetatable(L, "lm_process_t");
+	luaL_newmetatable(L, LM_PROCESS_META);
 	lua_pushcfunction(L, lua_lm_process_index);
 	lua_setfield(L, lua_gettop(L) - 1, "__index");
 	lua_pushcfunction(L, lua_lm_process_tostring);

bindings/lua/tests/test.lua

@@ -3,4 +3,13 @@ print("Lua Tests")
 local libmem = require("libmem_lua")
 print("libmem_lua loaded")
 
-print(libmem.LM_FindProcess("target"))
+target_proc = libmem.LM_FindProcess("target")
+print("[*] Target Process")
+print("PID: " .. target_proc.pid)
+print("PPID: " .. target_proc.ppid)
+print("Bits: " .. target_proc.bits)
+print("Start Time: " .. target_proc.start_time)
+print("Path: " .. target_proc.path)
+print("Name: " .. target_proc.name)
+print("(invalid): " .. (target_proc.invalid or "nil"))
+print(target_proc)