[Minor] Add logging variable for forced actions

src/libserver/cfg_file.h

@@ -236,6 +236,7 @@ enum rspamd_log_format_type {
 	RSPAMD_LOG_LUA,
 	RSPAMD_LOG_DIGEST,
 	RSPAMD_LOG_FILENAME,
+	RSPAMD_LOG_FORCED_ACTION,
 };
 
 enum rspamd_log_format_flags {

src/libserver/cfg_utils.c

@@ -446,6 +446,9 @@ rspamd_config_process_var (struct rspamd_config *cfg, const rspamd_ftok_t *var,
 	else if (rspamd_ftok_cstr_equal (&tok, "filename", TRUE)) {
 		type = RSPAMD_LOG_FILENAME;
 	}
+	else if (rspamd_ftok_cstr_equal (&tok, "forced_action", TRUE)) {
+		type = RSPAMD_LOG_FORCED_ACTION;
+	}
 	else {
 		msg_err_config ("unknown log variable: %T", &tok);
 		return FALSE;

src/libserver/task.c

@@ -1010,6 +1010,11 @@ rspamd_task_log_check_condition (struct rspamd_task *task,
 			ret = TRUE;
 		}
 		break;
+	case RSPAMD_LOG_FORCED_ACTION:
+		if (task->result->passthrough_result) {
+			ret = TRUE;
+		}
+		break;
 	default:
 		ret = TRUE;
 		break;
@@ -1292,7 +1297,7 @@ rspamd_task_log_variable (struct rspamd_task *task,
 {
 	rspamd_fstring_t *res = logbuf;
 	rspamd_ftok_t var = {.begin = NULL, .len = 0};
-	static gchar numbuf[64];
+	static gchar numbuf[128];
 	static const gchar undef[] = "undef";
 
 	switch (lf->type) {
@@ -1412,6 +1417,29 @@ rspamd_task_log_variable (struct rspamd_task *task,
 			var.len = sizeof (undef) - 1;
 		}
 		break;
+	case RSPAMD_LOG_FORCED_ACTION:
+		if (task->result->passthrough_result) {
+			struct rspamd_passthrough_result *pr = task->result->passthrough_result;
+
+			if (!isnan (pr->target_score)) {
+				var.len = rspamd_snprintf (numbuf, sizeof (numbuf),
+						"%s \"%s\"; score=%.2f (set by %s)",
+						rspamd_action_to_str (pr->action),
+						pr->message, pr->target_score, pr->module);
+			}
+			else {
+				var.len = rspamd_snprintf (numbuf, sizeof (numbuf),
+						"%s \"%s\"; score=nan (set by %s)",
+						rspamd_action_to_str (pr->action),
+						pr->message, pr->module);
+			}
+			var.begin = numbuf;
+		}
+		else {
+			var.begin = undef;
+			var.len = sizeof (undef) - 1;
+		}
+		break;
 	default:
 		var = rspamd_task_log_metric_res (task, lf);
 		break;