[Minor] Add is_attachment method

diff --git a/src/lua/lua_mimepart.c b/src/lua/lua_mimepart.c
index 5a1bd0860dcc66aaa826f7847e6b2fb553ac6c2d..c672591bfbf20470b3294e5718590a8c346441f7 100644 (file)
--- a/src/lua/lua_mimepart.c
+++ b/src/lua/lua_mimepart.c
@@ -363,6 +363,12 @@ LUA_FUNCTION_DEF (mimepart, get_image);
  * @return {bool} true if a part is an archive
  */
 LUA_FUNCTION_DEF (mimepart, is_archive);
+/***
+ * @method mime_part:is_attachment()
+ * Returns true if mime part looks like an attachment
+ * @return {bool} true if a part looks like an attachment
+ */
+LUA_FUNCTION_DEF (mimepart, is_attachment);
 
 /***
  * @method mime_part:get_archive()
@@ -457,6 +463,7 @@ static const struct luaL_reg mimepartlib_m[] = {
        LUA_INTERFACE_DEF (mimepart, get_children),
        LUA_INTERFACE_DEF (mimepart, is_text),
        LUA_INTERFACE_DEF (mimepart, is_broken),
+       LUA_INTERFACE_DEF (mimepart, is_attachment),
        LUA_INTERFACE_DEF (mimepart, get_text),
        LUA_INTERFACE_DEF (mimepart, get_digest),
        LUA_INTERFACE_DEF (mimepart, get_id),
@@ -1355,6 +1362,37 @@ lua_mimepart_is_multipart (lua_State * L)
        return 1;
 }
 
+static gint
+lua_mimepart_is_attachment (lua_State * L)
+{
+       LUA_TRACE_POINT;
+       struct rspamd_mime_part *part = lua_check_mimepart (L);
+
+       if (part == NULL) {
+               return luaL_error (L, "invalid arguments");
+       }
+
+       if (!(part->flags & (RSPAMD_MIME_PART_IMAGE|RSPAMD_MIME_PART_TEXT))) {
+               if (part->cd && part->cd->type == RSPAMD_CT_ATTACHMENT) {
+                       lua_pushboolean (L, true);
+               }
+               else {
+                       if (part->cd->filename.len > 0) {
+                               /* We still have filename and it is not an image */
+                               lua_pushboolean (L, true);
+                       }
+                       else {
+                               lua_pushboolean (L, false);
+                       }
+               }
+       }
+       else {
+               lua_pushboolean (L, false);
+       }
+
+       return 1;
+}
+
 static gint
 lua_mimepart_is_text (lua_State * L)
 {