forked from osmocom/wireshark
315 lines
8.4 KiB
C
315 lines
8.4 KiB
C
/*
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* packet-lua.h
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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@gmail.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _PACKET_LUA_H
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#define _PACKET_LUA_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <errno.h>
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#include <lua.h>
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#include <lualib.h>
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#include <lauxlib.h>
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#include <wiretap/wtap.h>
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#include <epan/packet.h>
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#include <epan/strutil.h>
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#include <epan/prefs.h>
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#include <epan/proto.h>
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#include <epan/epan_dissect.h>
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#include <epan/tap.h>
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#include <epan/filesystem.h>
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#include <epan/report_err.h>
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#include <epan/emem.h>
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#include <epan/funnel.h>
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#include "elua_register.h"
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#define ELUA_INIT_ROUTINES "init_routines"
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#define LOG_DOMAIN_LUA "eLua"
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struct _eth_tvbrange {
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tvbuff_t* tvb;
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int offset;
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int len;
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};
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typedef struct _eth_field_t {
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int hfid;
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int ett;
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char* name;
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char* abbr;
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char* blob;
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enum ftenum type;
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base_display_e base;
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value_string* vs;
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guint32 mask;
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} eth_field_t;
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typedef enum {PREF_NONE,PREF_BOOL,PREF_UINT,PREF_STRING} pref_type_t;
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typedef struct _eth_pref_t {
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gchar* name;
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gchar* label;
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gchar* desc;
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pref_type_t type;
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union {
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gboolean b;
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guint u;
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const gchar* s;
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void* p;
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} value;
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struct _eth_pref_t* next;
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struct _eth_proto_t* proto;
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} eth_pref_t;
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typedef struct _eth_proto_t {
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gchar* name;
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gchar* desc;
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int hfid;
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int ett;
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eth_pref_t prefs;
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int fields;
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module_t *prefs_module;
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dissector_handle_t handle;
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gboolean is_postdissector;
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} eth_proto_t;
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struct _eth_distbl_t {
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dissector_table_t table;
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gchar* name;
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};
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struct _eth_col_info {
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column_info* cinfo;
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gint col;
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};
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struct _eth_treeitem {
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proto_item* item;
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proto_tree* tree;
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};
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typedef struct {const gchar* str; enum ftenum id; } eth_ft_types_t;
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typedef eth_pref_t* Pref;
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typedef eth_pref_t* Prefs;
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typedef struct _eth_field_t* ProtoField;
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typedef struct _eth_proto_t* Proto;
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typedef struct _eth_distbl_t* DissectorTable;
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typedef dissector_handle_t Dissector;
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typedef GByteArray* ByteArray;
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typedef tvbuff_t* Tvb;
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typedef struct _eth_tvbrange* TvbRange;
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typedef struct _eth_col_info* Column;
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typedef column_info* Columns;
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typedef packet_info* Pinfo;
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typedef struct _eth_treeitem* TreeItem;
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typedef address* Address;
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typedef header_field_info** Field;
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typedef field_info* FieldInfo;
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typedef struct _eth_tap* Tap;
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typedef funnel_text_window_t* TextWindow;
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typedef wtap_dumper* Dumper;
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typedef struct lua_pseudo_header* PseudoHeader;
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/*
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* toXxx(L,idx) gets a Xxx from an index (Lua Error if fails)
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* checkXxx(L,idx) gets a Xxx from an index after calling check_code (No Lua Error if it fails)
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* pushXxx(L,xxx) pushes an Xxx into the stack
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* isXxx(L,idx) tests whether we have an Xxx at idx
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*
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* LUA_CLASS_DEFINE must be used without trailing ';'
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*/
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#define ELUA_CLASS_DEFINE(C,check_code) \
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C to##C(lua_State* L, int index) { \
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C* v = (C*)lua_touserdata (L, index); \
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if (!v) luaL_typerror(L,index,#C); \
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return *v; \
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} \
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C check##C(lua_State* L, int index) { \
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C* p; \
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luaL_checktype(L,index,LUA_TUSERDATA); \
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p = (C*)luaL_checkudata(L, index, #C); \
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check_code; \
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return p ? *p : NULL; \
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} \
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C* push##C(lua_State* L, C v) { \
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C* p = lua_newuserdata(L,sizeof(C)); *p = v; \
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luaL_getmetatable(L, #C); lua_setmetatable(L, -2); \
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return p; \
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}\
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gboolean is##C(lua_State* L,int i) { \
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void *p; \
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if(!lua_isuserdata(L,i)) return FALSE; \
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p = lua_touserdata(L, i); \
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lua_getfield(L, LUA_REGISTRYINDEX, #C); \
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if (p == NULL || !lua_getmetatable(L, i) || !lua_rawequal(L, -1, -2)) p=NULL; \
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lua_pop(L, 2); \
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return p ? TRUE : FALSE; \
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} \
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C shift##C(lua_State* L,int i) { \
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C* p; \
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if(!lua_isuserdata(L,i)) return NULL; \
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p = lua_touserdata(L, i); \
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lua_getfield(L, LUA_REGISTRYINDEX, #C); \
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if (p == NULL || !lua_getmetatable(L, i) || !lua_rawequal(L, -1, -2)) p=NULL; \
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lua_pop(L, 2); \
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if (p) { lua_remove(L,i); return *p; }\
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else return NULL;\
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}
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#ifdef HAVE_LUA_5_1
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#define ELUA_REGISTER_CLASS(C) { \
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luaL_register (L, #C, C ## _methods); \
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luaL_newmetatable (L, #C); \
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luaL_register (L, NULL, C ## _meta); \
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lua_pushliteral(L, "__index"); \
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lua_pushvalue(L, -3); \
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lua_rawset(L, -3); \
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lua_pushliteral(L, "__metatable"); \
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lua_pushvalue(L, -3); \
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lua_rawset(L, -3); \
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lua_pop(L, 1); \
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}
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#define ELUA_REGISTER_META(C) luaL_newmetatable (L, #C); luaL_register (L, NULL, C ## _meta);
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#define ELUA_INIT(L) \
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L = luaL_newstate(); \
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luaL_openlibs(L); \
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ELUA_REGISTER_CLASSES(); \
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ELUA_REGISTER_FUNCTIONS();
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#else /* Lua 5.0 */
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#define ELUA_REGISTER_CLASS(C) { \
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luaL_openlib(L, #C, C ## _methods, 0); \
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luaL_newmetatable(L, #C); \
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luaL_openlib(L, 0, C ## _meta, 0); \
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lua_pushliteral(L, "__index"); \
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lua_pushvalue(L, -3); \
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lua_rawset(L, -3); \
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lua_pushliteral(L, "__metatable"); \
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lua_pushvalue(L, -3); \
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lua_rawset(L, -3); \
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lua_pop(L, 1); \
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}
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#define ELUA_REGISTER_META(C) luaL_newmetatable (L, #C); luaL_openlib (L, NULL, C ## _meta, 0);
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#define ELUA_INIT(L) \
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L = lua_open(); \
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luaopen_base(L); \
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luaopen_table(L); \
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luaopen_io(L); \
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luaopen_string(L); \
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ELUA_REGISTER_CLASSES(); \
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ELUA_REGISTER_FUNCTIONS();
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#endif
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#define ELUA_FUNCTION extern int
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#define ELUA_REGISTER_FUNCTION(name) { lua_pushstring(L, #name); lua_pushcfunction(L, elua_## name); lua_settable(L, LUA_GLOBALSINDEX); }
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#define ELUA_REGISTER extern int
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#define ELUA_METHOD static int
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#define ELUA_CONSTRUCTOR static int
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#define ELUA_ATTR_SET static int
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#define ELUA_ATTR_GET static int
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#define ELUA_METAMETHOD static int
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#define ELUA_METHODS static const luaL_reg
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#define ELUA_META static const luaL_reg
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#define ELUA_CLASS_FNREG(class,name) { #name, class##_##name }
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#define ELUA_ERROR(name,error) { luaL_error(L, #name ": " error); return 0; }
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#define ELUA_ARG_ERROR(name,attr,error) { luaL_argerror(L,ELUA_ARG_ ## name ## _ ## attr, #name ": " error); return 0; }
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#define ELUA_OPTARG_ERROR(name,attr,error) { luaL_argerror(L,ELUA_OPTARG_##name##_ ##attr, #name ": " error); return 0; }
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#define ELUA_REG_GLOBAL_BOOL(L,n,v) { lua_pushstring(L,n); lua_pushboolean(L,v); lua_settable(L, LUA_GLOBALSINDEX); }
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#define ELUA_REG_GLOBAL_STRING(n,v) { lua_pushstring(L,n); lua_pushstring(L,v); lua_settable(L, LUA_GLOBALSINDEX); }
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#define ELUA_REG_GLOBAL_NUMBER(n,v) { lua_pushstring(L,n); lua_pushnumber(L,v); lua_settable(L, LUA_GLOBALSINDEX); }
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#define ELUA_RETURN(i) return (i);
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#define ELUA_API extern
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#define NOP
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#define FAIL_ON_NULL(s) if (! *p) luaL_argerror(L,index,s)
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#define ELUA_CLASS_DECLARE(C) \
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extern C to##C(lua_State* L, int index); \
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extern C check##C(lua_State* L, int index); \
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extern C* push##C(lua_State* L, C v); \
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extern int C##_register(lua_State* L); \
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extern gboolean is##C(lua_State* L,int i); \
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extern C shift##C(lua_State* L,int i)
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extern packet_info* lua_pinfo;
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extern TreeItem lua_tree;
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extern tvbuff_t* lua_tvb;
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extern int lua_malformed;
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extern dissector_handle_t lua_data_handle;
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extern gboolean lua_initialized;
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extern int lua_dissectors_table_ref;
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ELUA_DECLARE_CLASSES()
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ELUA_DECLARE_FUNCTIONS()
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extern const gchar* lua_shiftstring(lua_State* L,int idx);
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extern void dissect_lua(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree);
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extern void proto_register_lua(void);
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extern GString* lua_register_all_taps(void);
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extern void lua_prime_all_fields(proto_tree* tree);
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extern int Proto_commit(lua_State* L);
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extern void* push_Tvb(lua_State* L, Tvb tvb);
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extern void clear_outstanding_tvbs(void);
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extern void* push_Pinfo(lua_State* L, Pinfo p);
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extern void clear_outstanding_pinfos(void);
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extern void* push_TreeItem(lua_State* L, TreeItem ti);
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extern void clear_outstanding_trees(void);
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extern void elua_print_stack(char* s, lua_State* L);
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#endif
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