feat(falco): Provide a parameter for loading lua files from an altern…

…ate path This will be used by the static build to load lua files from alternate directories that are not tied to the compile flags Signed-off-by: Radu Andries <[email protected]>
falcosecurity · Sep 29, 2020 · ac84e3e · ac84e3e
1 parent 271e23c
commit ac84e3e
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/userspace/falco/falco.cpp b/userspace/falco/falco.cpp
@@ -86,6 +86,7 @@ static void usage()
 	   " -h, --help                    Print this page\n"
 	   " -c                            Configuration file (default " FALCO_SOURCE_CONF_FILE ", " FALCO_INSTALL_CONF_FILE ")\n"
 	   " -A                            Monitor all events, including those with EF_DROP_SIMPLE_CONS flag.\n"
+	   " --alternate-lua-dir <path>    Specify an alternate path for loading falco lua files\n"
 	   " -b, --print-base64            Print data buffers in base64.\n"
 	   "                               This is useful for encoding binary data that needs to be used over media designed to.\n"
 	   " --cri <path>                  Path to CRI socket for container metadata.\n"
@@ -479,7 +480,8 @@ int falco_init(int argc, char **argv)
 
 	static struct option long_options[] =
 	{
-		{"cri", required_argument, 0},
+		{"alternate-lua-dir", required_argument, 0},
+        {"cri", required_argument, 0},
         {"daemon", no_argument, 0, 'd'},
         {"disable-cri-async", no_argument, 0, 0},
         {"disable-source", required_argument, 0},
@@ -509,6 +511,7 @@ int falco_init(int argc, char **argv)
 		set<string> disabled_rule_substrings;
 		string substring;
 		string all_rules = "";
+		string alternate_lua_dir = FALCO_ENGINE_SOURCE_LUA_DIR;
 		set<string> disabled_rule_tags;
 		set<string> enabled_rule_tags;
 
@@ -686,6 +689,13 @@ int falco_init(int argc, char **argv)
 						disable_sources.insert(optarg);
 					}
 				}
+				else if (string(long_options[long_index].name)== "alternate-lua-dir")
+				{
+					if(optarg != NULL)
+					{
+						alternate_lua_dir = optarg;
+					}
+				}
 				break;
 
 			default:
@@ -721,7 +731,7 @@ int falco_init(int argc, char **argv)
 			return EXIT_SUCCESS;
 		}
 
-		engine = new falco_engine();
+		engine = new falco_engine(true, alternate_lua_dir);
 		engine->set_inspector(inspector);
 		engine->set_extra(output_format, replace_container_info);