forked from osmocom/wireshark
448 lines
14 KiB
C
448 lines
14 KiB
C
/*
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* wslua_tree.c
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*
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* Wireshark's interface to the Lua Programming Language
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*
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* (c) 2006, Luis E. Garcia Ontanon <luis@ontanon.org>
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* (c) 2008, Balint Reczey <balint.reczey@ericsson.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/emem.h>
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/* WSLUA_MODULE Tree Adding information to the dissection tree */
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#include "wslua.h"
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#include <epan/expert.h>
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static gint wslua_ett = -1;
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static GPtrArray* outstanding_TreeItem = NULL;
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#define PUSH_TREEITEM(L,i) {g_ptr_array_add(outstanding_TreeItem,i);pushTreeItem(L,i);}
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TreeItem* push_TreeItem(lua_State*L, TreeItem t) {
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g_ptr_array_add(outstanding_TreeItem,t);
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return pushTreeItem(L,t);
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}
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CLEAR_OUTSTANDING(TreeItem, expired, TRUE)
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WSLUA_CLASS_DEFINE(TreeItem,NOP,NOP);
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/* TreeItems represent information in the packet-details pane.
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A root TreeItem is passed to dissectors as the third argument. */
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WSLUA_METHOD TreeItem_add_packet_field(lua_State *L) {
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/*
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Adds an child item to a given item, returning the child.
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tree_item:add_packet_field([proto_field], [tvbrange], [encoding], ...)
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*/
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TvbRange tvbr;
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ProtoField field;
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int hfid;
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int ett;
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ftenum_t type;
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TreeItem tree_item = shiftTreeItem(L,1);
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guint encoding;
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proto_item* item = NULL;
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if (!tree_item) {
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return luaL_error(L,"not a TreeItem!");
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}
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if (tree_item->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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if (! ( field = shiftProtoField(L,1) ) ) {
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luaL_error(L,"TreeField:add_packet_field not passed a ProtoField");
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return 0;
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}
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hfid = field->hfid;
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type = field->type;
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ett = field->ett;
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tvbr = shiftTvbRange(L,1);
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if (!tvbr) {
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/* No TvbRange specified */
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tvbr = ep_new(struct _wslua_tvbrange);
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tvbr->tvb = ep_new(struct _wslua_tvb);
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tvbr->tvb->ws_tvb = lua_tvb;
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tvbr->offset = 0;
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tvbr->len = 0;
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}
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encoding = (guint)luaL_checknumber(L,1);
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lua_remove(L,1);
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if (type == FT_STRINGZ) {
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switch (encoding & ENC_CHARENCODING_MASK) {
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case ENC_UTF_16:
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case ENC_UCS_2:
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tvbr->len = tvb_unicode_strsize (tvbr->tvb->ws_tvb, tvbr->offset);
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break;
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default:
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tvbr->len = tvb_strsize (tvbr->tvb->ws_tvb, tvbr->offset);
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break;
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}
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}
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item = proto_tree_add_item(tree_item->tree, hfid, tvbr->tvb->ws_tvb, tvbr->offset, tvbr->len, encoding);
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while(lua_gettop(L)) {
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const gchar* s;
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s = lua_tostring(L,1);
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if (s) proto_item_append_text(item, " %s", s);
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lua_remove(L,1);
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}
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tree_item = (TreeItem)g_malloc(sizeof(struct _wslua_treeitem));
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tree_item->item = item;
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tree_item->tree = proto_item_add_subtree(item,ett > 0 ? ett : wslua_ett);
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tree_item->expired = FALSE;
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PUSH_TREEITEM(L,tree_item);
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return 1;
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}
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static int TreeItem_add_item_any(lua_State *L, gboolean little_endian) {
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TvbRange tvbr;
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Proto proto;
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ProtoField field;
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int hfid = -1;
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int ett = -1;
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ftenum_t type = FT_NONE;
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TreeItem tree_item = shiftTreeItem(L,1);
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proto_item* item = NULL;
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if (!tree_item) {
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return luaL_error(L,"not a TreeItem!");
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}
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if (tree_item->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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if (! ( field = shiftProtoField(L,1) ) ) {
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if (( proto = shiftProto(L,1) )) {
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hfid = proto->hfid;
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type = FT_PROTOCOL;
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ett = proto->ett;
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}
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} else {
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hfid = field->hfid;
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type = field->type;
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ett = field->ett;
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}
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tvbr = shiftTvbRange(L,1);
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if (!tvbr) {
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tvbr = ep_new(struct _wslua_tvbrange);
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tvbr->tvb = ep_new(struct _wslua_tvb);
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tvbr->tvb->ws_tvb = lua_tvb;
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tvbr->offset = 0;
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tvbr->len = 0;
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}
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if (hfid > 0 ) {
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if (lua_gettop(L)) {
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switch(type) {
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case FT_PROTOCOL:
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item = proto_tree_add_item(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,ENC_NA);
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lua_pushnumber(L,0);
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lua_insert(L,1);
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break;
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case FT_BOOLEAN:
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item = proto_tree_add_boolean(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(guint32)luaL_checknumber(L,1));
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break;
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case FT_UINT8:
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case FT_UINT16:
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case FT_UINT24:
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case FT_UINT32:
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case FT_FRAMENUM:
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item = proto_tree_add_uint(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(guint32)luaL_checknumber(L,1));
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break;
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case FT_INT8:
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case FT_INT16:
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case FT_INT24:
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case FT_INT32:
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item = proto_tree_add_int(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(gint32)luaL_checknumber(L,1));
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break;
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case FT_FLOAT:
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item = proto_tree_add_float(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(float)luaL_checknumber(L,1));
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break;
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case FT_DOUBLE:
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item = proto_tree_add_double(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,(double)luaL_checknumber(L,1));
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break;
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case FT_ABSOLUTE_TIME:
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case FT_RELATIVE_TIME:
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item = proto_tree_add_time(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,checkNSTime(L,1));
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break;
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case FT_STRING:
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item = proto_tree_add_string(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,luaL_checkstring(L,1));
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break;
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case FT_STRINGZ:
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item = proto_tree_add_string(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvb_strsize (tvbr->tvb->ws_tvb, tvbr->offset),luaL_checkstring(L,1));
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break;
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case FT_BYTES:
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item = proto_tree_add_bytes(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len, (const guint8*) luaL_checkstring(L,1));
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break;
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case FT_UINT64:
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item = proto_tree_add_uint64(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,*(UInt64)checkUInt64(L,1));
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break;
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case FT_INT64:
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item = proto_tree_add_int64(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,*(Int64)checkInt64(L,1));
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break;
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case FT_IPv4:
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item = proto_tree_add_ipv4(tree_item->tree,hfid,tvbr->tvb->ws_tvb,tvbr->offset,tvbr->len,*((guint32*)(checkAddress(L,1)->data)));
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break;
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case FT_ETHER:
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case FT_UINT_BYTES:
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case FT_IPv6:
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case FT_IPXNET:
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case FT_GUID:
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case FT_OID:
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case FT_REL_OID:
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default:
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luaL_error(L,"FT_ not yet supported");
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return 0;
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}
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lua_remove(L,1);
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} else {
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if (type == FT_STRINGZ) tvbr->len = tvb_strsize (tvbr->tvb->ws_tvb, tvbr->offset);
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item = proto_tree_add_item(tree_item->tree, hfid, tvbr->tvb->ws_tvb, tvbr->offset, tvbr->len, little_endian ? ENC_LITTLE_ENDIAN : ENC_BIG_ENDIAN);
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}
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if ( lua_gettop(L) ) {
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const gchar* s = lua_tostring(L,1);
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if (s) proto_item_set_text(item,"%s",s);
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lua_remove(L,1);
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}
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} else {
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if (lua_gettop(L)) {
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const gchar* s = lua_tostring(L,1);
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item = proto_tree_add_text(tree_item->tree, tvbr->tvb->ws_tvb, tvbr->offset, tvbr->len,"%s",s);
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lua_remove(L,1);
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}
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}
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while(lua_gettop(L)) {
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const gchar* s = lua_tostring(L,1);
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if (s) proto_item_append_text(item, " %s", s);
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lua_remove(L,1);
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}
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tree_item = (TreeItem)g_malloc(sizeof(struct _wslua_treeitem));
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tree_item->item = item;
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tree_item->tree = proto_item_add_subtree(item,ett > 0 ? ett : wslua_ett);
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tree_item->expired = FALSE;
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PUSH_TREEITEM(L,tree_item);
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return 1;
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}
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WSLUA_METHOD TreeItem_add(lua_State *L) {
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/*
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Adds an child item to a given item, returning the child.
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tree_item:add([proto_field | proto], [tvbrange], [label], ...)
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if the proto_field represents a numeric value (int, uint or float) is to be treated as a Big Endian (network order) Value.
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*/
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WSLUA_RETURN(TreeItem_add_item_any(L,FALSE)); /* The child item */
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}
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WSLUA_METHOD TreeItem_add_le(lua_State *L) {
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/*
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Adds (and returns) an child item to a given item, returning the child.
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tree_item:add([proto_field | proto], [tvbrange], [label], ...)
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if the proto_field represents a numeric value (int, uint or float) is to be treated as a Little Endian Value.
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*/
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WSLUA_RETURN(TreeItem_add_item_any(L,TRUE)); /* The child item */
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}
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WSLUA_METHOD TreeItem_set_text(lua_State *L) {
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/* Sets the text of the label */
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#define WSLUA_ARG_TreeItem_set_text_TEXT 2 /* The text to be used. */
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TreeItem ti = checkTreeItem(L,1);
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const gchar* s;
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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s = luaL_checkstring(L,WSLUA_ARG_TreeItem_set_text_TEXT);
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proto_item_set_text(ti->item,"%s",s);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_append_text(lua_State *L) {
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/* Appends text to the label */
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#define WSLUA_ARG_TreeItem_append_text_TEXT 2 /* The text to be appended. */
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TreeItem ti = checkTreeItem(L,1);
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const gchar* s;
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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s = luaL_checkstring(L,WSLUA_ARG_TreeItem_append_text_TEXT);
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proto_item_append_text(ti->item,"%s",s);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_prepend_text(lua_State *L) {
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/* Prepends text to the label */
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#define WSLUA_ARG_TreeItem_prepend_text_TEXT 2 /* The text to be prepended */
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TreeItem ti = checkTreeItem(L,1);
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const gchar* s;
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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s = luaL_checkstring(L,WSLUA_ARG_TreeItem_prepend_text_TEXT);
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proto_item_prepend_text(ti->item,"%s",s);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_add_expert_info(lua_State *L) {
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/* Sets the expert flags of the item and adds expert info to the packet. */
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#define WSLUA_OPTARG_TreeItem_add_expert_info_GROUP 2 /* One of PI_CHECKSUM, PI_SEQUENCE, PI_RESPONSE_CODE, PI_REQUEST_CODE, PI_UNDECODED, PI_REASSEMBLE, PI_MALFORMED or PI_DEBUG */
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#define WSLUA_OPTARG_TreeItem_add_expert_info_SEVERITY 3 /* One of PI_CHAT, PI_NOTE, PI_WARN, PI_ERROR */
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#define WSLUA_OPTARG_TreeItem_add_expert_info_TEXT 4 /* The text for the expert info */
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TreeItem ti = checkTreeItem(L,1);
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int group = luaL_optint(L,WSLUA_OPTARG_TreeItem_add_expert_info_GROUP,PI_DEBUG);
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int severity = luaL_optint(L,WSLUA_OPTARG_TreeItem_add_expert_info_SEVERITY,PI_CHAT);
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const gchar* str = luaL_optstring(L,WSLUA_OPTARG_TreeItem_add_expert_info_TEXT,"Expert Info");
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if ( ti && ti->item ) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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expert_add_info_format_internal(lua_pinfo, ti->item, group, severity, "%s", str);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_set_generated(lua_State *L) {
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/* Marks the TreeItem as a generated field (with data infered but not contained in the packet). */
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TreeItem ti = checkTreeItem(L,1);
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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PROTO_ITEM_SET_GENERATED(ti->item);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_set_hidden(lua_State *L) {
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/* Should not be used */
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TreeItem ti = checkTreeItem(L,1);
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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PROTO_ITEM_SET_HIDDEN(ti->item);
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}
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return 0;
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}
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WSLUA_METHOD TreeItem_set_len(lua_State *L) {
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/* Set TreeItem's length inside tvb, after it has already been created. */
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#define WSLUA_ARG_TreeItem_set_len_LEN 2 /* The length to be used. */
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TreeItem ti = checkTreeItem(L,1);
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gint len;
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if (ti) {
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if (ti->expired) {
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luaL_error(L,"expired TreeItem");
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return 0;
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}
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len = luaL_checkint(L,WSLUA_ARG_TreeItem_set_len_LEN);
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proto_item_set_len(ti->item, len);
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}
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return 0;
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}
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/* Gets registered as metamethod automatically by WSLUA_REGISTER_CLASS/META */
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static int TreeItem__gc(lua_State* L) {
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TreeItem ti = checkTreeItem(L,1);
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if (!ti) return 0;
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if (!ti->expired)
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ti->expired = TRUE;
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else
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g_free(ti);
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return 0;
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}
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static const luaL_Reg TreeItem_methods[] = {
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{"add_packet_field", TreeItem_add_packet_field},
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{"add", TreeItem_add},
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{"add_le", TreeItem_add_le},
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{"set_text", TreeItem_set_text},
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{"append_text", TreeItem_append_text},
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{"prepend_text", TreeItem_prepend_text},
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{"add_expert_info", TreeItem_add_expert_info},
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{"set_generated", TreeItem_set_generated},
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{"set_hidden", TreeItem_set_hidden},
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{"set_len", TreeItem_set_len},
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{ NULL, NULL }
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};
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static const luaL_Reg TreeItem_meta[] = {
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{ NULL, NULL }
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};
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int TreeItem_register(lua_State *L) {
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gint* etts[] = { &wslua_ett };
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WSLUA_REGISTER_CLASS(TreeItem);
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outstanding_TreeItem = g_ptr_array_new();
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proto_register_subtree_array(etts,1);
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return 1;
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}
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