Add function rspamd_config:replace_regexp

diff --git a/src/lua/lua_config.c b/src/lua/lua_config.c
index 5717e5588df25378211652ebce514dd13c6c27a4..5743a5ad155afeba332d8e9a78d63488c0bcf96e 100644 (file)
--- a/src/lua/lua_config.c
+++ b/src/lua/lua_config.c
@@ -365,6 +365,22 @@ LUA_FUNCTION_DEF (config, newindex);
  */
 LUA_FUNCTION_DEF (config, register_regexp);
 
+/***
+ * @method rspamd_config:replace_regexp(params)
+ * Replaces regexp with a new one
+ * Params is the table with the follwoing fields (mandatory fields are marked with `*`):
+ * - `old_re`* : old regular expression object
+ * - `new_re`* : old regular expression object
+ * - `type`*: type of regular expression:
+ *   + `mime`: mime regexp
+ *   + `header`: header regexp
+ *   + `rawheader`: raw header expression
+ *   + `body`: raw body regexp
+ *   + `url`: url regexp
+ * - `header`: for header and rawheader regexp means the name of header
+ */
+LUA_FUNCTION_DEF (config, replace_regexp);
+
 static const struct luaL_reg configlib_m[] = {
        LUA_INTERFACE_DEF (config, get_module_opt),
        LUA_INTERFACE_DEF (config, get_mempool),
@@ -390,6 +406,7 @@ static const struct luaL_reg configlib_m[] = {
        LUA_INTERFACE_DEF (config, get_key),
        LUA_INTERFACE_DEF (config, add_condition),
        LUA_INTERFACE_DEF (config, register_regexp),
+       LUA_INTERFACE_DEF (config, replace_regexp),
        {"__tostring", rspamd_lua_class_tostring},
        {"__newindex", lua_config_newindex},
        {NULL, NULL}
@@ -1609,6 +1626,58 @@ lua_config_register_regexp (lua_State *L)
        return 0;
 }
 
+static gint
+lua_config_replace_regexp (lua_State *L)
+{
+       struct rspamd_config *cfg = lua_check_config (L, 1);
+       struct rspamd_lua_regexp *old_re = NULL, *new_re = NULL;
+       const gchar *type_str = NULL, *header_str = NULL;
+       gsize header_len = 0;
+       GError *err = NULL;
+       enum rspamd_re_type type = RSPAMD_RE_BODY;
+
+       if (cfg != NULL) {
+               if (!rspamd_lua_parse_table_arguments (L, 2, &err,
+                               "*old_re=U{regexp};*new_re=U{regexp};*type=S;header=V",
+                               &old_re, &new_re, &type_str, &header_len, &header_str)) {
+                       msg_err_config ("cannot get parameters list: %e", err);
+
+                       if (err) {
+                               g_error_free (err);
+                       }
+               }
+               else {
+                       if (strcmp (type_str, "header") == 0) {
+                               type = RSPAMD_RE_HEADER;
+                       }
+                       else if (strcmp (type_str, "rawheader") == 0) {
+                               type = RSPAMD_RE_RAWHEADER;
+                       }
+                       else if (strcmp (type_str, "mime") == 0) {
+                               type = RSPAMD_RE_MIME;
+                       }
+                       else if (strcmp (type_str, "body") == 0) {
+                               type = RSPAMD_RE_BODY;
+                       }
+                       else if (strcmp (type_str, "url") == 0) {
+                               type = RSPAMD_RE_URL;
+                       }
+
+                       if ((type == RSPAMD_RE_HEADER || type == RSPAMD_RE_RAWHEADER)
+                                       && header_str == NULL) {
+                               msg_err_config (
+                                               "header argument is mandatory for header/rawheader regexps");
+                       }
+                       else {
+                               rspamd_re_cache_replace (cfg->re_cache, old_re->re,
+                                               type, (gpointer) header_str, header_len, new_re->re);
+                       }
+               }
+       }
+
+       return 0;
+}
+
 struct lua_map_callback_data {
        lua_State *L;
        gint ref;