[Feature] Add `one_param` flag for metric symbols

5 files changed, 40 insertions, 5 deletions

diff --git a/src/libmime/filter.c b/src/libmime/filter.c
index 5b998406f..a1dae9f5c 100644
--- a/src/libmime/filter.c
+++ b/src/libmime/filter.c
@@ -142,7 +142,8 @@ insert_metric_result (struct rspamd_task *task,
 			 */
 			single = TRUE;
 		}
-		if (s->options && opts && opts != s->options) {
+		if (s->options && opts && opts != s->options &&
+				!(sdef->flags & RSPAMD_SYMBOL_FLAG_ONEPARAM)) {
 			/* Append new options */
 			s->options = g_list_concat (s->options, g_list_copy (opts));
 			/*
diff --git a/src/libserver/cfg_file.h b/src/libserver/cfg_file.h
index d10ce235d..1ca6118a5 100644
--- a/src/libserver/cfg_file.h
+++ b/src/libserver/cfg_file.h
@@ -96,6 +96,7 @@ struct rspamd_symbols_group {
 
 #define RSPAMD_SYMBOL_FLAG_ONESHOT (1 << 0)
 #define RSPAMD_SYMBOL_FLAG_IGNORE (1 << 1)
+#define RSPAMD_SYMBOL_FLAG_ONEPARAM (1 << 2)
 
 /**
  * Symbol definition
diff --git a/src/libserver/cfg_rcl.c b/src/libserver/cfg_rcl.c
index 5cfd73ee3..a260ca99a 100644
--- a/src/libserver/cfg_rcl.c
+++ b/src/libserver/cfg_rcl.c
@@ -349,6 +349,12 @@ rspamd_rcl_symbol_handler (rspamd_mempool_t *pool, const ucl_object_t *obj,
 		}
 	}
 
+	if ((elt = ucl_object_lookup (obj, "one_param")) != NULL) {
+		if (ucl_object_toboolean (elt)) {
+			flags |= RSPAMD_SYMBOL_FLAG_ONEPARAM;
+		}
+	}
+
 	if ((elt = ucl_object_lookup (obj, "ignore")) != NULL) {
 		if (ucl_object_toboolean (elt)) {
 			flags |= RSPAMD_SYMBOL_FLAG_IGNORE;
diff --git a/src/lua/lua_config.c b/src/lua/lua_config.c
index 915666a7d..b9a727efa 100644
--- a/src/lua/lua_config.c
+++ b/src/lua/lua_config.c
@@ -242,9 +242,11 @@ LUA_FUNCTION_DEF (config, register_dependency);
  * - `description`: description of symbol (string, optional)
  * - `group`: name of group for symbol (string, optional)
  * - `one_shot`: turn off multiple hits for a symbol (boolean, optional)
+ * - `one_param`: turn off multiple options for a symbol (boolean, optional)
  * - `flags`: comma separated string of flags:
  *    + `ignore`: do not strictly check validity of symbol and corresponding rule
  *    + `one_shot`: turn off multiple hits for a symbol
+ *    + `one_param`: allow only one parameter for a symbol
  * - `priority`: priority of symbol's definition
  */
 LUA_FUNCTION_DEF (config, set_metric_symbol);
@@ -1376,7 +1378,7 @@ lua_config_set_metric_symbol (lua_State * L)
 			*group = NULL, *name = NULL, *flags_str = NULL;
 	double weight;
 	struct metric *metric;
-	gboolean one_shot = FALSE;
+	gboolean one_shot = FALSE, one_param = FALSE;
 	GError *err = NULL;
 	gdouble priority = 0.0;
 	guint flags = 0;
@@ -1386,9 +1388,10 @@ lua_config_set_metric_symbol (lua_State * L)
 		if (lua_type (L, 2) == LUA_TTABLE) {
 			if (!rspamd_lua_parse_table_arguments (L, 2, &err,
 					"*name=S;score=N;description=S;"
-					"group=S;one_shot=B;metric=S;priority=N;flags=S",
+					"group=S;one_shot=B;one_param=B;metric=S;priority=N;flags=S",
 					&name, &weight, &description,
-					&group, &one_shot, &metric_name, &priority, &flags_str)) {
+					&group, &one_shot, &one_param,
+					&metric_name, &priority, &flags_str)) {
 				msg_err_config ("bad arguments: %e", err);
 				g_error_free (err);
 
@@ -1421,14 +1424,20 @@ lua_config_set_metric_symbol (lua_State * L)
 		if (one_shot) {
 			flags |= RSPAMD_SYMBOL_FLAG_ONESHOT;
 		}
+		if (one_param) {
+			flags |= RSPAMD_SYMBOL_FLAG_ONEPARAM;
+		}
 
 		if (flags_str) {
 			if (strstr (flags_str, "one_shot") != NULL) {
 				flags |= RSPAMD_SYMBOL_FLAG_ONESHOT;
 			}
-			else if (strstr (flags_str, "ignore") != NULL) {
+			if (strstr (flags_str, "ignore") != NULL) {
 				flags |= RSPAMD_SYMBOL_FLAG_IGNORE;
 			}
+			if (strstr (flags_str, "one_param") != NULL) {
+				flags |= RSPAMD_SYMBOL_FLAG_ONEPARAM;
+			}
 		}
 
 		if (metric == NULL) {
@@ -1787,6 +1796,16 @@ lua_config_newindex (lua_State *L)
 					}
 					lua_pop (L, 1);
 
+					lua_pushstring (L, "one_param");
+					lua_gettable (L, -2);
+
+					if (lua_type (L, -1) == LUA_TBOOLEAN) {
+						if (lua_toboolean (L, -1)) {
+							flags |= RSPAMD_SYMBOL_FLAG_ONEPARAM;
+						}
+					}
+					lua_pop (L, 1);
+
 					/*
 					 * Do not override the existing symbols (using zero priority),
 					 * since we are defining default values here
diff --git a/src/plugins/regexp.c b/src/plugins/regexp.c
index deb5adab5..a88bde21b 100644
--- a/src/plugins/regexp.c
+++ b/src/plugins/regexp.c
@@ -285,6 +285,14 @@ regexp_module_config (struct rspamd_config *cfg)
 					}
 				}
 
+				elt = ucl_object_lookup (value, "one_param");
+
+				if (elt) {
+					if (ucl_object_toboolean (elt)) {
+						flags |= RSPAMD_SYMBOL_FLAG_ONEPARAM;
+					}
+				}
+
 				elt = ucl_object_lookup (value, "priority");
 
 				if (elt) {