[Minor] Add ID to mime parts

src/libmime/message.h

@@ -51,11 +51,16 @@ struct rspamd_mime_part {
 	rspamd_ftok_t raw_data;
 	rspamd_ftok_t parsed_data;
 	struct rspamd_mime_part *parent_part;
-	GHashTable *raw_headers;
+
 	GQueue *headers_order;
+	GHashTable *raw_headers;
+
 	gchar *raw_headers_str;
 	gsize raw_headers_len;
+
 	enum rspamd_cte cte;
+	enum rspamd_mime_part_flags flags;
+	guint id;
 
 	union {
 		struct rspamd_mime_multipart mp;
@@ -64,7 +69,6 @@ struct rspamd_mime_part {
 		struct rspamd_archive *arch;
 	} specific;
 
-	enum rspamd_mime_part_flags flags;
 	guchar digest[rspamd_cryptobox_HASHBYTES];
 };
 

src/libmime/mime_parser.c

@@ -510,6 +510,7 @@ rspamd_mime_parse_normal_part (struct rspamd_task *task,
 		g_assert_not_reached ();
 	}
 
+	part->id = task->parts->len;
 	g_ptr_array_add (task->parts, part);
 	msg_debug_mime ("parsed data part %T/%T of length %z (%z orig), %s cte",
 			&part->ct->type, &part->ct->subtype, part->parsed_data.len,
@@ -815,6 +816,7 @@ rspamd_mime_parse_multipart_part (struct rspamd_task *task,
 		return RSPAMD_MIME_PARSE_NESTING;
 	}
 
+	part->id = task->parts->len;
 	g_ptr_array_add (task->parts, part);
 	st->nesting ++;
 	rspamd_mime_part_get_cte (task, part->raw_headers, part, FALSE);

src/lua/lua_mimepart.c

@@ -402,6 +402,13 @@ LUA_FUNCTION_DEF (mimepart, get_text);
  * @return {string} 128 characters hex string with digest of the part
  */
 LUA_FUNCTION_DEF (mimepart, get_digest);
+
+/***
+ * @method mime_part:get_id()
+ * Returns the order of the part in parts list
+ * @return {number} index of the part (starting from 1 as it is Lua API)
+ */
+LUA_FUNCTION_DEF (mimepart, get_id);
 /***
  * @method mime_part:is_broken()
  * Returns true if mime part has incorrectly specified content type
@@ -444,6 +451,7 @@ static const struct luaL_reg mimepartlib_m[] = {
 	LUA_INTERFACE_DEF (mimepart, is_broken),
 	LUA_INTERFACE_DEF (mimepart, get_text),
 	LUA_INTERFACE_DEF (mimepart, get_digest),
+	LUA_INTERFACE_DEF (mimepart, get_id),
 	LUA_INTERFACE_DEF (mimepart, headers_foreach),
 	{"__tostring", rspamd_lua_class_tostring},
 	{NULL, NULL}
@@ -1471,6 +1479,21 @@ lua_mimepart_get_digest (lua_State * L)
 	return 1;
 }
 
+static gint
+lua_mimepart_get_id (lua_State * L)
+{
+	LUA_TRACE_POINT;
+	struct rspamd_mime_part *part = lua_check_mimepart (L);
+
+	if (part == NULL) {
+		return luaL_error (L, "invalid arguments");
+	}
+
+	lua_pushnumber (L, part->id);
+
+	return 1;
+}
+
 static gint
 lua_mimepart_headers_foreach (lua_State *L)
 {