From 4eda8b70db67079e85a5978f7f4585a0f6a61f10 Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Mon, 17 Dec 2018 14:36:22 +0000
Subject: [PATCH] [Minor] Lua_mimepart: Add method to get part boundary

---
 src/lua/lua_common.h   |  1 +
 src/lua/lua_mimepart.c | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/src/lua/lua_common.h b/src/lua/lua_common.h
index 31d7f852b..4c82be640 100644
--- a/src/lua/lua_common.h
+++ b/src/lua/lua_common.h
@@ -7,6 +7,7 @@
 #include <lua.h>
 #include <lauxlib.h>
 #include <lualib.h>
+#include <stdbool.h>
 
 #include "rspamd.h"
 #include "ucl.h"
diff --git a/src/lua/lua_mimepart.c b/src/lua/lua_mimepart.c
index 340da7aa2..c45030791 100644
--- a/src/lua/lua_mimepart.c
+++ b/src/lua/lua_mimepart.c
@@ -421,6 +421,15 @@ LUA_FUNCTION_DEF (mimepart, get_archive);
  * @return {bool} true if a part is is a multipart part
  */
 LUA_FUNCTION_DEF (mimepart, is_multipart);
+
+/***
+ * @method mime_part:get_boundary()
+ * Returns boundary for a part (extracted from parent multipart for normal parts and
+ * from the part itself for multipart)
+ * @return {string} boundary value or nil
+ */
+LUA_FUNCTION_DEF (mimepart, get_boundary);
+
 /***
  * @method mime_part:get_children()
  * Returns rspamd_mimepart table of part's childer. Returns nil if mime part is not multipart
@@ -484,6 +493,7 @@ static const struct luaL_reg mimepartlib_m[] = {
 	LUA_INTERFACE_DEF (mimepart, get_detected_type_full),
 	LUA_INTERFACE_DEF (mimepart, get_cte),
 	LUA_INTERFACE_DEF (mimepart, get_filename),
+	LUA_INTERFACE_DEF (mimepart, get_boundary),
 	LUA_INTERFACE_DEF (mimepart, get_header),
 	LUA_INTERFACE_DEF (mimepart, get_header_raw),
 	LUA_INTERFACE_DEF (mimepart, get_header_full),
@@ -1353,6 +1363,35 @@ lua_mimepart_get_filename (lua_State * L)
 	return 1;
 }
 
+static gint
+lua_mimepart_get_boundary (lua_State * L)
+{
+	LUA_TRACE_POINT;
+	struct rspamd_mime_part *part = lua_check_mimepart (L), *parent;
+
+	if (part == NULL) {
+		return luaL_error (L, "invalid arguments");
+	}
+
+	if (IS_CT_MULTIPART (part->ct)) {
+		lua_pushlstring (L, part->specific.mp->boundary.begin,
+				part->specific.mp->boundary.len);
+	}
+	else {
+		parent = part->parent_part;
+
+		if (!parent || !IS_CT_MULTIPART (parent->ct)) {
+			lua_pushnil (L);
+		}
+		else {
+			lua_pushlstring (L, parent->specific.mp->boundary.begin,
+					parent->specific.mp->boundary.len);
+		}
+	}
+
+	return 1;
+}
+
 static gint
 lua_mimepart_get_header_common (lua_State *L, enum rspamd_lua_task_header_type how)
 {
-- 
2.39.5