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wireshark/epan/wslua/wslua_pinfo.c

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/*
* wslua_pinfo.c
*
* Wireshark's interface to the Lua Programming Language
*
* (c) 2006, Luis E. Garcia Ontanon <luis@ontanon.org>
* (c) 2008, Balint Reczey <balint.reczey@ericsson.com>
* (c) 2011, Stig Bjorlykke <stig@bjorlykke.org>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
/* WSLUA_MODULE Pinfo Obtaining packet information */
#include "wslua.h"
#include <epan/addr_resolv.h>
#include <string.h>
/*
* Track pointers to wireshark's structures.
* see comment on wslua_tvb.c
*/
static GPtrArray* outstanding_Pinfo = NULL;
static GPtrArray* outstanding_Column = NULL;
static GPtrArray* outstanding_Columns = NULL;
static GPtrArray* outstanding_PrivateTable = NULL;
CLEAR_OUTSTANDING(Pinfo,expired, TRUE)
CLEAR_OUTSTANDING(Column,expired, TRUE)
CLEAR_OUTSTANDING(Columns,expired, TRUE)
CLEAR_OUTSTANDING(PrivateTable,expired, TRUE)
Pinfo* push_Pinfo(lua_State* L, packet_info* ws_pinfo) {
Pinfo pinfo = NULL;
if (ws_pinfo) {
pinfo = g_malloc(sizeof(struct _wslua_pinfo));
pinfo->ws_pinfo = ws_pinfo;
pinfo->expired = FALSE;
g_ptr_array_add(outstanding_Pinfo,pinfo);
}
return pushPinfo(L,pinfo);
}
#define PUSH_COLUMN(L,c) {g_ptr_array_add(outstanding_Column,c);pushColumn(L,c);}
#define PUSH_COLUMNS(L,c) {g_ptr_array_add(outstanding_Columns,c);pushColumns(L,c);}
#define PUSH_PRIVATE_TABLE(L,c) {g_ptr_array_add(outstanding_PrivateTable,c);pushPrivateTable(L,c);}
WSLUA_CLASS_DEFINE(NSTime,NOP,NOP);
/* NSTime represents a nstime_t. This is an object with seconds and nano seconds. */
WSLUA_CONSTRUCTOR NSTime_new(lua_State *L) {
/* Creates a new NSTime object */
#define WSLUA_OPTARG_NSTime_new_SECONDS 1 /* Seconds */
#define WSLUA_OPTARG_NSTime_new_NSECONDS 2 /* Nano seconds */
NSTime nstime = g_malloc(sizeof(nstime_t));
if (!nstime) return 0;
nstime->secs = (time_t) luaL_optint(L,WSLUA_OPTARG_NSTime_new_SECONDS,0);
nstime->nsecs = luaL_optint(L,WSLUA_OPTARG_NSTime_new_NSECONDS,0);
pushNSTime(L,nstime);
WSLUA_RETURN(1); /* The new NSTime object. */
}
WSLUA_METAMETHOD NSTime__tostring(lua_State* L) {
NSTime nstime = checkNSTime(L,1);
if (!nstime) return 0;
lua_pushstring(L,ep_strdup_printf("%ld.%09d", (long)nstime->secs, nstime->nsecs));
WSLUA_RETURN(1); /* The string representing the nstime. */
}
WSLUA_METAMETHOD NSTime__add(lua_State* L) { /* Calculates the sum of two NSTimes */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = checkNSTime(L,2);
NSTime time3 = g_malloc (sizeof (nstime_t));
nstime_sum (time3, time1, time2);
pushNSTime (L, time3);
return 1;
}
WSLUA_METAMETHOD NSTime__sub(lua_State* L) { /* Calculates the diff of two NSTimes */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = checkNSTime(L,2);
NSTime time3 = g_malloc (sizeof (nstime_t));
nstime_delta (time3, time1, time2);
pushNSTime (L, time3);
return 1;
}
WSLUA_METAMETHOD NSTime__unm(lua_State* L) { /* Calculates the negative NSTime */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = g_malloc (sizeof (nstime_t));
nstime_set_zero (time2);
nstime_subtract (time2, time1);
pushNSTime (L, time2);
return 1;
}
WSLUA_METAMETHOD NSTime__eq(lua_State* L) { /* Compares two NSTimes */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = checkNSTime(L,2);
gboolean result = FALSE;
if (!time1 || !time2)
WSLUA_ERROR(FieldInfo__eq,"Data source must be the same for both fields");
if (nstime_cmp(time1, time2) == 0)
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
WSLUA_METAMETHOD NSTime__le(lua_State* L) { /* Compares two NSTimes */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = checkNSTime(L,2);
gboolean result = FALSE;
if (!time1 || !time2)
WSLUA_ERROR(FieldInfo__eq,"Data source must be the same for both fields");
if (nstime_cmp(time1, time2) <= 0)
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
WSLUA_METAMETHOD NSTime__lt(lua_State* L) { /* Compares two NSTimes */
NSTime time1 = checkNSTime(L,1);
NSTime time2 = checkNSTime(L,2);
gboolean result = FALSE;
if (!time1 || !time2)
WSLUA_ERROR(FieldInfo__eq,"Data source must be the same for both fields");
if (nstime_cmp(time1, time2) < 0)
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
typedef struct {
const gchar* name;
lua_CFunction get;
lua_CFunction set;
} nstime_actions_t;
static int NSTime_get_secs(lua_State* L) {
NSTime nstime = toNSTime(L,1);
lua_pushnumber (L,(lua_Number)(nstime->secs));
return 1;
}
static int NSTime_set_secs(lua_State* L)
{
NSTime nstime = toNSTime(L,1);
time_t secs = luaL_checkint(L,3);
nstime->secs = secs;
return 0;
}
static int NSTime_get_nsecs(lua_State* L) {
NSTime nstime = toNSTime(L,1);
lua_pushnumber (L,(lua_Number)(nstime->nsecs));
return 1;
}
static int NSTime_set_nsecs(lua_State* L) {
NSTime nstime = toNSTime(L,1);
int nsecs = luaL_checkint(L,3);
nstime->nsecs = nsecs;
return 0;
}
static const nstime_actions_t nstime_actions[] = {
/* WSLUA_ATTRIBUTE NSTime_secs RW The NSTime seconds */
{"secs", NSTime_get_secs, NSTime_set_secs},
/* WSLUA_ATTRIBUTE NSTime_nsecs RW The NSTime nano seconds */
{"nsecs", NSTime_get_nsecs, NSTime_set_nsecs},
{NULL,NULL,NULL}
};
static int NSTime__index(lua_State* L) {
NSTime nstime = checkNSTime(L,1);
const gchar* name = luaL_checkstring(L,2);
const nstime_actions_t* pa;
if (! (nstime && name) ) return 0;
for (pa = nstime_actions; pa->name; pa++) {
if ( g_str_equal(name,pa->name) ) {
if (pa->get) {
return pa->get(L);
} else {
luaL_error(L,"You cannot get the `%s' attribute of a nstime",name);
return 0;
}
}
}
luaL_error(L,"A protocol doesn't have a `%s' nstime",name);
return 0;
}
static int NSTime__newindex(lua_State* L) {
NSTime nstime = checkNSTime(L,1);
const gchar* name = luaL_checkstring(L,2);
const nstime_actions_t* pa;
if (! (nstime && name) ) return 0;
for (pa = nstime_actions; pa->name; pa++) {
if ( g_str_equal(name,pa->name) ) {
if (pa->set) {
return pa->set(L);
} else {
luaL_error(L,"You cannot set the `%s' attribute of a nstime",name);
return 0;
}
}
}
luaL_error(L,"A protocol doesn't have a `%s' nstime",name);
return 0;
}
static int NSTime__gc(lua_State* L) {
NSTime nstime = checkNSTime(L,1);
if (!nstime) return 0;
g_free (nstime);
return 0;
}
WSLUA_META NSTime_meta[] = {
{"__index", NSTime__index},
{"__newindex", NSTime__newindex},
{"__tostring", NSTime__tostring},
{"__add", NSTime__add},
{"__sub", NSTime__sub},
{"__unm", NSTime__unm},
{"__eq", NSTime__eq},
{"__le", NSTime__le},
{"__lt", NSTime__lt},
{"__gc", NSTime__gc},
{ NULL, NULL}
};
int NSTime_register(lua_State* L) {
WSLUA_REGISTER_META(NSTime);
lua_pushcfunction(L, NSTime_new);
lua_setglobal(L, "NSTime");
return 1;
}
WSLUA_CLASS_DEFINE(Address,NOP,NOP); /* Represents an address */
WSLUA_CONSTRUCTOR Address_ip(lua_State* L) {
/* Creates an Address Object representing an IP address. */
#define WSLUA_ARG_Address_ip_HOSTNAME 1 /* The address or name of the IP host. */
Address addr = g_malloc(sizeof(address));
guint32* ip_addr = g_malloc(sizeof(guint32));
const gchar* name = luaL_checkstring(L,WSLUA_ARG_Address_ip_HOSTNAME);
if (! get_host_ipaddr(name, (guint32*)ip_addr)) {
*ip_addr = 0;
}
SET_ADDRESS(addr, AT_IPv4, 4, ip_addr);
pushAddress(L,addr);
WSLUA_RETURN(1); /* The Address object */
}
#if 0
/* TODO */
static int Address_ipv6(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_ss7(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_eth(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_sna(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_atalk(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_vines(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_osi(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_arcnet(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_fc(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_string(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_eui64(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_uri(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
static int Address_tipc(lua_State* L) {
Address addr = g_malloc(sizeof(address));
SET_ADDRESS(addr, AT_NONE, 4, g_malloc(4));
pushAddress(L,addr);
return 1;
}
#endif
WSLUA_METHODS Address_methods[] = {
WSLUA_CLASS_FNREG(Address,ip),
WSLUA_CLASS_FNREG_ALIAS(Address,ipv4,ip),
#if 0
WSLUA_CLASS_FNREG(Address,ipv6),
WSLUA_CLASS_FNREG_ALIAS(Address,ss7pc,ss7),
WSLUA_CLASS_FNREG(Address,eth),
WSLUA_CLASS_FNREG(Address,sna},
WSLUA_CLASS_FNREG(Address,atalk),
WSLUA_CLASS_FNREG(Address,vines),
WSLUA_CLASS_FNREG(Address,osi),
WSLUA_CLASS_FNREG(Address,arcnet),
WSLUA_CLASS_FNREG(Address,fc),
WSLUA_CLASS_FNREG(Address,string),
WSLUA_CLASS_FNREG(Address,eui64),
WSLUA_CLASS_FNREG(Address,uri),
WSLUA_CLASS_FNREG(Address,tipc),
#endif
{0,0}
};
WSLUA_METAMETHOD Address__tostring(lua_State* L) {
Address addr = checkAddress(L,1);
lua_pushstring(L,get_addr_name(addr));
WSLUA_RETURN(1); /* The string representing the address. */
}
static int Address__gc(lua_State* L) {
Address addr = checkAddress(L,1);
if (addr) {
g_free((void*)addr->data);
g_free((void*)addr);
}
return 0;
}
WSLUA_METAMETHOD Address__eq(lua_State* L) { /* Compares two Addresses */
Address addr1 = checkAddress(L,1);
Address addr2 = checkAddress(L,2);
gboolean result = FALSE;
if (ADDRESSES_EQUAL(addr1, addr2))
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
WSLUA_METAMETHOD Address__le(lua_State* L) { /* Compares two Addresses */
Address addr1 = checkAddress(L,1);
Address addr2 = checkAddress(L,2);
gboolean result = FALSE;
if (CMP_ADDRESS(addr1, addr2) <= 0)
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
WSLUA_METAMETHOD Address__lt(lua_State* L) { /* Compares two Addresses */
Address addr1 = checkAddress(L,1);
Address addr2 = checkAddress(L,2);
gboolean result = FALSE;
if (CMP_ADDRESS(addr1, addr2) < 0)
result = TRUE;
lua_pushboolean(L,result);
return 1;
}
WSLUA_META Address_meta[] = {
{"__gc", Address__gc },
{"__tostring", Address__tostring },
{"__eq",Address__eq},
{"__le",Address__le},
{"__lt",Address__lt},
{0,0}
};
int Address_register(lua_State *L) {
WSLUA_REGISTER_CLASS(Address);
return 1;
}
WSLUA_CLASS_DEFINE(Column,FAIL_ON_NULL("expired column"),NOP); /* A Column in the packet list */
struct col_names_t {
const gchar* name;
int id;
};
static const struct col_names_t colnames[] = {
{"number",COL_NUMBER},
{"abs_time",COL_ABS_TIME},
{"utc_time",COL_UTC_TIME},
{"cls_time",COL_CLS_TIME},
{"rel_time",COL_REL_TIME},
{"date",COL_ABS_DATE_TIME},
{"utc_date",COL_UTC_DATE_TIME},
{"delta_time",COL_DELTA_TIME},
{"delta_time_displayed",COL_DELTA_TIME_DIS},
{"src",COL_DEF_SRC},
{"src_res",COL_RES_SRC},
{"src_unres",COL_UNRES_SRC},
{"dl_src",COL_DEF_DL_SRC},
{"dl_src_res",COL_RES_DL_SRC},
{"dl_src_unres",COL_UNRES_DL_SRC},
{"net_src",COL_DEF_NET_SRC},
{"net_src_res",COL_RES_NET_SRC},
{"net_src_unres",COL_UNRES_NET_SRC},
{"dst",COL_DEF_DST},
{"dst_res",COL_RES_DST},
{"dst_unres",COL_UNRES_DST},
{"dl_dst",COL_DEF_DL_DST},
{"dl_dst_res",COL_RES_DL_DST},
{"dl_dst_unres",COL_UNRES_DL_DST},
{"net_dst",COL_DEF_NET_DST},
{"net_dst_res",COL_RES_NET_DST},
{"net_dst_unres",COL_UNRES_NET_DST},
{"src_port",COL_DEF_SRC_PORT},
{"src_port_res",COL_RES_SRC_PORT},
{"src_port_unres",COL_UNRES_SRC_PORT},
{"dst_port",COL_DEF_DST_PORT},
{"dst_port_res",COL_RES_DST_PORT},
{"dst_port_unres",COL_UNRES_DST_PORT},
{"protocol",COL_PROTOCOL},
{"info",COL_INFO},
{"packet_len",COL_PACKET_LENGTH},
{"cumulative_bytes",COL_CUMULATIVE_BYTES},
{"direction",COL_IF_DIR},
{"vsan",COL_VSAN},
{"tx_rate",COL_TX_RATE},
{"rssi",COL_RSSI},
{"dce_call",COL_DCE_CALL},
{NULL,0}
};
static gint col_name_to_id(const gchar* name) {
const struct col_names_t* cn;
for(cn = colnames; cn->name; cn++) {
if (g_str_equal(cn->name,name)) {
return cn->id;
}
}
return 0;
}
static const gchar* col_id_to_name(gint id) {
const struct col_names_t* cn;
for(cn = colnames; cn->name; cn++) {
if ( cn->id == id ) {
return cn->name;
}
}
return NULL;
}
WSLUA_METAMETHOD Column__tostring(lua_State *L) {
Column c = checkColumn(L,1);
const gchar* text;
if (!c) {
lua_pushstring(L,"(nil)");
}
else if (!c->cinfo) {
text = col_id_to_name(c->col);
lua_pushfstring(L, "(%s)", text ? text : "unknown");
}
else {
text = col_get_text(c->cinfo, c->col);
lua_pushstring(L, text ? text : "(nil)");
}
WSLUA_RETURN(1); /* The column's string text (in parenthesis if not available) */
}
static int Column__gc(lua_State* L) {
Column col = checkColumn(L,1);
if (!col) return 0;
if (!col->expired)
col->expired = TRUE;
else
g_free(col);
return 0;
}
WSLUA_METHOD Column_clear(lua_State *L) {
/* Clears a Column */
Column c = checkColumn(L,1);
if (!(c && c->cinfo)) return 0;
col_clear(c->cinfo, c->col);
return 0;
}
WSLUA_METHOD Column_set(lua_State *L) {
/* Sets the text of a Column */
#define WSLUA_ARG_Column_set_TEXT 2 /* The text to which to set the Column */
Column c = checkColumn(L,1);
const gchar* s = luaL_checkstring(L,WSLUA_ARG_Column_set_TEXT);
if (!(c && c->cinfo))
return 0;
if (!s) WSLUA_ARG_ERROR(Column_set,TEXT,"must be a string");
col_add_str(c->cinfo, c->col, s);
return 0;
}
WSLUA_METHOD Column_append(lua_State *L) {
/* Appends text to a Column */
#define WSLUA_ARG_Column_append_TEXT 2 /* The text to append to the Column */
Column c = checkColumn(L,1);
const gchar* s = luaL_checkstring(L,WSLUA_ARG_Column_append_TEXT);
if (!(c && c->cinfo))
return 0;
if (!s) WSLUA_ARG_ERROR(Column_append,TEXT,"must be a string");
col_append_str(c->cinfo, c->col, s);
return 0;
}
WSLUA_METHOD Column_prepend(lua_State *L) {
/* Prepends text to a Column */
#define WSLUA_ARG_Column_prepend_TEXT 2 /* The text to prepend to the Column */
Column c = checkColumn(L,1);
const gchar* s = luaL_checkstring(L,WSLUA_ARG_Column_prepend_TEXT);
if (!(c && c->cinfo))
return 0;
if (!s) WSLUA_ARG_ERROR(Column_prepend,TEXT,"must be a string");
if (check_col(c->cinfo, c->col))
col_prepend_fstr(c->cinfo, c->col, "%s",s);
return 0;
}
WSLUA_METHOD Column_fence(lua_State *L) {
/* Sets Column text fence, to prevent overwriting */
Column c = checkColumn(L,1);
if (c && c->cinfo)
col_set_fence(c->cinfo, c->col);
return 0;
}
WSLUA_METHODS Column_methods[] = {
WSLUA_CLASS_FNREG(Column,clear),
WSLUA_CLASS_FNREG(Column,set),
WSLUA_CLASS_FNREG(Column,append),
WSLUA_CLASS_FNREG(Column,prepend),
WSLUA_CLASS_FNREG_ALIAS(Column,preppend,prepend),
WSLUA_CLASS_FNREG(Column,fence),
{0,0}
};
WSLUA_META Column_meta[] = {
{"__tostring", Column__tostring },
{"__gc", Column__gc },
{0,0}
};
int Column_register(lua_State *L) {
WSLUA_REGISTER_CLASS(Column);
return 1;
}
WSLUA_CLASS_DEFINE(Columns,NOP,NOP);
/* The Columns of the packet list. */
WSLUA_METAMETHOD Columns__tostring(lua_State *L) {
lua_pushstring(L,"Columns");
WSLUA_RETURN(1);
/* The string "Columns", no real use, just for debugging purposes. */
}
WSLUA_METAMETHOD Columns__newindex(lua_State *L) {
/* Sets the text of a specific column */
#define WSLUA_ARG_Columns__newindex_COLUMN 2 /* The name of the column to set */
#define WSLUA_ARG_Columns__newindex_TEXT 3 /* The text for the column */
Columns cols = checkColumns(L,1);
const struct col_names_t* cn;
const char* colname;
const char* text;
if (!cols) return 0;
if (cols->expired) {
luaL_error(L,"expired column");
return 0;
}
colname = luaL_checkstring(L,WSLUA_ARG_Columns__newindex_COLUMN);
text = luaL_checkstring(L,WSLUA_ARG_Columns__newindex_TEXT);
for(cn = colnames; cn->name; cn++) {
if( g_str_equal(cn->name,colname) ) {
col_add_str(cols->cinfo, cn->id, text);
return 0;
}
}
WSLUA_ARG_ERROR(Columns__newindex,COLUMN,"the column name must be a valid column");
}
WSLUA_METAMETHOD Columns_index(lua_State *L) {
Columns cols = checkColumns(L,1);
const struct col_names_t* cn;
const char* colname = luaL_checkstring(L,2);
if (!cols) {
Column c = g_malloc(sizeof(struct _wslua_col_info));
c->cinfo = NULL;
c->col = col_name_to_id(colname);
c->expired = FALSE;
PUSH_COLUMN(L,c);
return 1;
}
if (cols->expired) {
luaL_error(L,"expired column");
return 0;
}
if (!colname) return 0;
for(cn = colnames; cn->name; cn++) {
if( g_str_equal(cn->name,colname) ) {
Column c = g_malloc(sizeof(struct _wslua_col_info));
c->cinfo = cols->cinfo;
c->col = col_name_to_id(colname);
c->expired = FALSE;
PUSH_COLUMN(L,c);
return 1;
}
}
return 0;
}
static int Columns_gc(lua_State* L) {
Columns cols = checkColumns(L,1);
if (!cols) return 0;
if (!cols->expired)
cols->expired = TRUE;
else
g_free(cols);
return 0;
}
static const luaL_Reg Columns_meta[] = {
{"__tostring", Columns__tostring },
{"__newindex", Columns__newindex },
{"__index", Columns_index},
{"__gc", Columns_gc},
{ NULL, NULL }
};
int Columns_register(lua_State *L) {
WSLUA_REGISTER_META(Columns);
return 1;
}
WSLUA_CLASS_DEFINE(PrivateTable,NOP,NOP);
/* PrivateTable represents the pinfo->private_table. */
WSLUA_METAMETHOD PrivateTable__tostring(lua_State* L) {
PrivateTable priv = checkPrivateTable(L,1);
GString *key_string;
GList *keys, *key;
if (!priv) return 0;
key_string = g_string_new ("");
keys = g_hash_table_get_keys (priv->table);
key = g_list_first (keys);
while (key) {
key_string = g_string_append (key_string, key->data);
key = g_list_next (key);
if (key) {
key_string = g_string_append_c (key_string, ',');
}
}
lua_pushstring(L,key_string->str);
g_string_free (key_string, TRUE);
g_list_free (keys);
WSLUA_RETURN(1); /* A string with all keys in the table, mostly for debugging. */
}
static int PrivateTable__index(lua_State* L) {
/* Gets the text of a specific entry */
PrivateTable priv = checkPrivateTable(L,1);
const gchar* name = luaL_checkstring(L,2);
const gchar* string;
if (! (priv && name) ) return 0;
if (priv->expired) {
luaL_error(L,"expired private_table");
return 0;
}
string = g_hash_table_lookup (priv->table, (gpointer) name);
if (string) {
lua_pushstring(L, string);
} else {
lua_pushnil(L);
}
return 1;
}
static int PrivateTable__newindex(lua_State* L) {
/* Sets the text of a specific entry */
PrivateTable priv = checkPrivateTable(L,1);
const gchar* name = luaL_checkstring(L,2);
const gchar* string = NULL;
if (! (priv && name) ) return 0;
if (priv->expired) {
luaL_error(L,"expired private_table");
return 0;
}
if (lua_isstring(L,3)) {
/* This also catches numbers, which is converted to string */
string = luaL_checkstring(L,3);
} else if (lua_isboolean(L,3)) {
/* We support boolean by setting a empty string if true and NULL if false */
string = lua_toboolean(L,3) ? "" : NULL;
} else if (!lua_isnil(L,3)) {
luaL_error(L,"unsupported type: %s", lua_typename(L,3));
return 0;
}
if (string) {
g_hash_table_replace (priv->table, (gpointer) ep_strdup(name), (gpointer) ep_strdup(string));
} else {
g_hash_table_remove (priv->table, (gpointer) name);
}
return 1;
}
static int PrivateTable__gc(lua_State* L) {
PrivateTable priv = checkPrivateTable(L,1);
if (!priv) return 0;
if (!priv->expired) {
priv->expired = TRUE;
} else {
if (priv->is_allocated) {
g_hash_table_destroy (priv->table);
}
g_free(priv);
}
return 0;
}
WSLUA_META PrivateTable_meta[] = {
{"__index", PrivateTable__index},
{"__newindex", PrivateTable__newindex},
{"__tostring", PrivateTable__tostring},
{"__gc", PrivateTable__gc},
{ NULL, NULL}
};
int PrivateTable_register(lua_State* L) {
WSLUA_REGISTER_META(PrivateTable);
return 1;
}
WSLUA_CLASS_DEFINE(Pinfo,FAIL_ON_NULL("expired pinfo"),NOP);
/* Packet information */
static int Pinfo_tostring(lua_State *L) { lua_pushstring(L,"a Pinfo"); return 1; }
#define PINFO_GET(name,block) static int name(lua_State *L) { \
Pinfo pinfo = checkPinfo(L,1); \
if (!pinfo) return 0;\
if (pinfo->expired) { \
luaL_error(L,"expired_pinfo"); \
return 0; \
} \
block \
return 1;\
}
#define PINFO_GET_BOOLEAN(name,val) \
PINFO_GET(name,{lua_pushboolean(L,val);})
#define PINFO_GET_NUMBER(name,val) \
PINFO_GET(name,{lua_pushnumber(L,(lua_Number)(val));})
#define PINFO_GET_STRING(name,val) \
PINFO_GET(name, { \
const gchar* value; \
value = val; \
if (value) lua_pushstring(L,(const char*)(value)); else lua_pushnil(L); \
})
#define PINFO_GET_ADDRESS(name,role) \
PINFO_GET(name, { \
Address addr; \
addr = g_new(address,1); \
COPY_ADDRESS(addr, &(pinfo->ws_pinfo->role)); \
pushAddress(L,addr); \
})
#define PINFO_GET_LIGHTUSERDATA(name, val) \
PINFO_GET(name,{lua_pushlightuserdata(L, (void *) (val));})
static double
lua_nstime_to_sec(const nstime_t *nstime)
{
return (((double)nstime->secs) + (((double)nstime->nsecs) / 1000000000.0));
}
static double
lua_delta_nstime_to_sec(const frame_data *fd, const frame_data *prev)
{
nstime_t del;
frame_delta_abs_time(fd, prev, &del);
return lua_nstime_to_sec(&del);
}
PINFO_GET_BOOLEAN(Pinfo_fragmented,pinfo->ws_pinfo->fragmented)
PINFO_GET_BOOLEAN(Pinfo_in_error_pkt,pinfo->ws_pinfo->flags.in_error_pkt)
PINFO_GET_BOOLEAN(Pinfo_visited,pinfo->ws_pinfo->fd->flags.visited)
PINFO_GET_NUMBER(Pinfo_number,pinfo->ws_pinfo->fd->num)
PINFO_GET_NUMBER(Pinfo_len,pinfo->ws_pinfo->fd->pkt_len)
PINFO_GET_NUMBER(Pinfo_caplen,pinfo->ws_pinfo->fd->cap_len)
PINFO_GET_NUMBER(Pinfo_abs_ts,lua_nstime_to_sec(&pinfo->ws_pinfo->fd->abs_ts))
PINFO_GET_NUMBER(Pinfo_rel_ts,lua_nstime_to_sec(&pinfo->ws_pinfo->fd->rel_ts))
PINFO_GET_NUMBER(Pinfo_delta_ts,lua_delta_nstime_to_sec(pinfo->ws_pinfo->fd, pinfo->ws_pinfo->fd->prev_cap))
PINFO_GET_NUMBER(Pinfo_delta_dis_ts,lua_delta_nstime_to_sec(pinfo->ws_pinfo->fd, pinfo->ws_pinfo->fd->prev_dis))
PINFO_GET_NUMBER(Pinfo_ipproto,pinfo->ws_pinfo->ipproto)
PINFO_GET_NUMBER(Pinfo_circuit_id,pinfo->ws_pinfo->circuit_id)
PINFO_GET_NUMBER(Pinfo_desegment_len,pinfo->ws_pinfo->desegment_len)
PINFO_GET_NUMBER(Pinfo_desegment_offset,pinfo->ws_pinfo->desegment_offset)
PINFO_GET_NUMBER(Pinfo_ptype,pinfo->ws_pinfo->ptype)
PINFO_GET_NUMBER(Pinfo_src_port,pinfo->ws_pinfo->srcport)
PINFO_GET_NUMBER(Pinfo_dst_port,pinfo->ws_pinfo->destport)
PINFO_GET_NUMBER(Pinfo_ethertype,pinfo->ws_pinfo->ethertype)
PINFO_GET_NUMBER(Pinfo_match_uint,pinfo->ws_pinfo->match_uint)
PINFO_GET_STRING(Pinfo_curr_proto,pinfo->ws_pinfo->current_proto)
PINFO_GET_STRING(Pinfo_match_string,pinfo->ws_pinfo->match_string)
PINFO_GET_ADDRESS(Pinfo_net_src,net_src)
PINFO_GET_ADDRESS(Pinfo_net_dst,net_dst)
PINFO_GET_ADDRESS(Pinfo_dl_src,dl_src)
PINFO_GET_ADDRESS(Pinfo_dl_dst,dl_dst)
PINFO_GET_ADDRESS(Pinfo_src,src)
PINFO_GET_ADDRESS(Pinfo_dst,dst)
PINFO_GET_LIGHTUSERDATA(Pinfo_private_data, pinfo->ws_pinfo->private_data)
static int Pinfo_match(lua_State *L) {
Pinfo pinfo = checkPinfo(L,1);
if (!pinfo) return 0;
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
if (pinfo->ws_pinfo->match_string) {
lua_pushstring(L,pinfo->ws_pinfo->match_string);
} else {
lua_pushnumber(L,(lua_Number)(pinfo->ws_pinfo->match_uint));
}
return 1;
}
static int Pinfo_columns(lua_State *L) {
Columns cols = NULL;
Pinfo pinfo = checkPinfo(L,1);
const gchar* colname = luaL_optstring(L,2,NULL);
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
cols = g_malloc(sizeof(struct _wslua_cols));
cols->cinfo = pinfo->ws_pinfo->cinfo;
cols->expired = FALSE;
if (!colname) {
PUSH_COLUMNS(L,cols);
} else {
lua_settop(L,0);
PUSH_COLUMNS(L,cols);
lua_pushstring(L,colname);
return Columns_index(L);
}
return 1;
}
static int Pinfo_private(lua_State *L) {
PrivateTable priv = NULL;
Pinfo pinfo = checkPinfo(L,1);
const gchar* privname = luaL_optstring(L,2,NULL);
gboolean is_allocated = FALSE;
if (!pinfo) return 0;
if (pinfo->expired) {
luaL_error(L,"expired private_table");
return 0;
}
if (!pinfo->ws_pinfo->private_table) {
pinfo->ws_pinfo->private_table = g_hash_table_new(g_str_hash,g_str_equal);
is_allocated = TRUE;
}
priv = g_malloc(sizeof(struct _wslua_private_table));
priv->table = pinfo->ws_pinfo->private_table;
priv->is_allocated = is_allocated;
priv->expired = FALSE;
if (!privname) {
PUSH_PRIVATE_TABLE(L,priv);
} else {
lua_settop(L,0);
PUSH_PRIVATE_TABLE(L,priv);
lua_pushstring(L,privname);
return PrivateTable__index(L);
}
return 1;
}
typedef enum {
PARAM_NONE,
PARAM_ADDR_SRC,
PARAM_ADDR_DST,
PARAM_ADDR_DL_SRC,
PARAM_ADDR_DL_DST,
PARAM_ADDR_NET_SRC,
PARAM_ADDR_NET_DST,
PARAM_PORT_SRC,
PARAM_PORT_DST,
PARAM_CIRCUIT_ID,
PARAM_DESEGMENT_LEN,
PARAM_DESEGMENT_OFFSET,
PARAM_PORT_TYPE,
PARAM_ETHERTYPE
} pinfo_param_type_t;
static int pushnil_param(lua_State* L, packet_info* pinfo _U_, pinfo_param_type_t pt _U_ ) {
lua_pushnil(L);
return 1;
}
static int Pinfo_set_addr(lua_State* L, packet_info* pinfo, pinfo_param_type_t pt) {
const address* from = checkAddress(L,1);
address* to;
if (! from ) {
luaL_error(L,"Not an OK address");
return 0;
}
if (!pinfo) {
luaL_error(L,"expired_pinfo");
return 0;
}
switch(pt) {
case PARAM_ADDR_SRC:
to = &(pinfo->src);
break;
case PARAM_ADDR_DST:
to = &(pinfo->dst);
break;
case PARAM_ADDR_DL_SRC:
to = &(pinfo->dl_src);
break;
case PARAM_ADDR_DL_DST:
to = &(pinfo->dl_dst);
break;
case PARAM_ADDR_NET_SRC:
to = &(pinfo->net_src);
break;
case PARAM_ADDR_NET_DST:
to = &(pinfo->net_dst);
break;
default:
g_assert(!"BUG: A bad parameter");
return 0;
}
COPY_ADDRESS(to,from);
return 0;
}
static int Pinfo_set_int(lua_State* L, packet_info* pinfo, pinfo_param_type_t pt) {
gint64 v = luaL_checkint(L,1);
if (!pinfo) {
luaL_error(L,"expired_pinfo");
return 0;
}
switch(pt) {
case PARAM_PORT_SRC:
pinfo->srcport = (guint32)v;
return 0;
case PARAM_PORT_DST:
pinfo->destport = (guint32)v;
return 0;
case PARAM_CIRCUIT_ID:
pinfo->circuit_id = (guint32)v;
return 0;
case PARAM_DESEGMENT_LEN:
pinfo->desegment_len = (guint32)v;
return 0;
case PARAM_DESEGMENT_OFFSET:
pinfo->desegment_offset = (int)v;
return 0;
case PARAM_ETHERTYPE:
pinfo->ethertype = (guint32)v;
return 0;
default:
g_assert(!"BUG: A bad parameter");
}
return 0;
}
typedef struct _pinfo_method_t {
const gchar* name;
lua_CFunction get;
int (*set)(lua_State*, packet_info*, pinfo_param_type_t);
pinfo_param_type_t param;
} pinfo_method_t;
static int Pinfo_hi(lua_State *L) {
Pinfo pinfo = checkPinfo(L,1);
Address addr;
if (!pinfo) return 0;
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
addr = g_malloc(sizeof(address));
if (CMP_ADDRESS(&(pinfo->ws_pinfo->src), &(pinfo->ws_pinfo->dst) ) >= 0) {
COPY_ADDRESS(addr, &(pinfo->ws_pinfo->src));
} else {
COPY_ADDRESS(addr, &(pinfo->ws_pinfo->dst));
}
pushAddress(L,addr);
return 1;
}
static int Pinfo_lo(lua_State *L) {
Pinfo pinfo = checkPinfo(L,1);
Address addr;
if (!pinfo) return 0;
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
addr = g_malloc(sizeof(address));
if (CMP_ADDRESS(&(pinfo->ws_pinfo->src), &(pinfo->ws_pinfo->dst) ) < 0) {
COPY_ADDRESS(addr, &(pinfo->ws_pinfo->src));
} else {
COPY_ADDRESS(addr, &(pinfo->ws_pinfo->dst));
}
pushAddress(L,addr);
return 1;
}
static const pinfo_method_t Pinfo_methods[] = {
/* WSLUA_ATTRIBUTE Pinfo_number RO The number of this packet in the current file */
{"number", Pinfo_number, pushnil_param, PARAM_NONE},
/* WSLUA_ATTRIBUTE Pinfo_len RO The length of the frame */
{"len", Pinfo_len, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_caplen RO The captured length of the frame */
{"caplen", Pinfo_caplen, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_abs_ts RO When the packet was captured */
{"abs_ts",Pinfo_abs_ts, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_rel_ts RO Number of seconds passed since beginning of capture */
{"rel_ts",Pinfo_rel_ts, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_delta_ts RO Number of seconds passed since the last captured packet */
{"delta_ts",Pinfo_delta_ts, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_delta_dis_ts RO Number of seconds passed since the last displayed packet */
{"delta_dis_ts",Pinfo_delta_dis_ts, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_visited RO Whether this packet hass been already visited */
{"visited",Pinfo_visited, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_src RW Source Address of this Packet */
{"src", Pinfo_src, Pinfo_set_addr, PARAM_ADDR_SRC },
/* WSLUA_ATTRIBUTE Pinfo_dst RW Destination Address of this Packet */
{"dst", Pinfo_dst, Pinfo_set_addr, PARAM_ADDR_DST },
/* WSLUA_ATTRIBUTE Pinfo_lo RO lower Address of this Packet */
{"lo", Pinfo_lo, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_hi RW higher Address of this Packet */
{"hi", Pinfo_hi, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_dl_src RW Data Link Source Address of this Packet */
{"dl_src", Pinfo_dl_src, Pinfo_set_addr, PARAM_ADDR_DL_SRC },
/* WSLUA_ATTRIBUTE Pinfo_dl_dst RW Data Link Destination Address of this Packet */
{"dl_dst", Pinfo_dl_dst, Pinfo_set_addr, PARAM_ADDR_DL_DST },
/* WSLUA_ATTRIBUTE Pinfo_net_src RW Network Layer Source Address of this Packet */
{"net_src", Pinfo_net_src, Pinfo_set_addr, PARAM_ADDR_NET_SRC },
/* WSLUA_ATTRIBUTE Pinfo_net_dst RW Network Layer Destination Address of this Packet */
{"net_dst", Pinfo_net_dst, Pinfo_set_addr, PARAM_ADDR_NET_DST },
/* WSLUA_ATTRIBUTE Pinfo_ptype RW Type of Port of .src_port and .dst_port */
{"port_type", Pinfo_ptype, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_src_port RW Source Port of this Packet */
{"src_port", Pinfo_src_port, Pinfo_set_int, PARAM_PORT_SRC },
/* WSLUA_ATTRIBUTE Pinfo_dst_port RW Source Address of this Packet */
{"dst_port", Pinfo_dst_port, Pinfo_set_int, PARAM_PORT_SRC },
/* WSLUA_ATTRIBUTE Pinfo_ipproto RO IP Protocol id */
{"ipproto", Pinfo_ipproto, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_circuit_id RO For circuit based protocols */
{"circuit_id", Pinfo_circuit_id, Pinfo_set_int, PARAM_CIRCUIT_ID },
/* WSLUA_ATTRIBUTE Pinfo_match RO Port/Data we are matching */
{"match", Pinfo_match, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_curr_proto RO Which Protocol are we dissecting */
{"curr_proto", Pinfo_curr_proto, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_columns RO Accesss to the packet list columns */
{"columns", Pinfo_columns, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_cols RO Accesss to the packet list columns (equivalent to pinfo.columns) */
{"cols", Pinfo_columns, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_desegment_len RW Estimated number of additional bytes required for completing the PDU */
{"desegment_len", Pinfo_desegment_len, Pinfo_set_int, PARAM_DESEGMENT_LEN },
/* WSLUA_ATTRIBUTE Pinfo_desegment_offset RW Offset in the tvbuff at which the dissector will continue processing when next called*/
{"desegment_offset", Pinfo_desegment_offset, Pinfo_set_int, PARAM_DESEGMENT_OFFSET },
/* WSLUA_ATTRIBUTE Pinfo_private_data RO Access to private data */
{"private_data", Pinfo_private_data, pushnil_param, PARAM_NONE},
/* WSLUA_ATTRIBUTE Pinfo_private RW Access to the private table entries */
{"private", Pinfo_private, pushnil_param, PARAM_NONE},
/* WSLUA_ATTRIBUTE Pinfo_ethertype RW Ethernet Type Code, if this is an Ethernet packet */
{"ethertype", Pinfo_ethertype, Pinfo_set_int, PARAM_ETHERTYPE},
/* WSLUA_ATTRIBUTE Pinfo_fragmented RO If the protocol is only a fragment */
{"fragmented", Pinfo_fragmented, pushnil_param, PARAM_NONE},
/* WSLUA_ATTRIBUTE Pinfo_in_error_pkt RO If we're inside an error packet */
{"in_error_pkt", Pinfo_in_error_pkt, pushnil_param, PARAM_NONE},
/* WSLUA_ATTRIBUTE Pinfo_match_uint RO Matched uint for calling subdissector from table */
{"match_uint", Pinfo_match_uint, pushnil_param, PARAM_NONE },
/* WSLUA_ATTRIBUTE Pinfo_match_string RO Matched string for calling subdissector from table */
{"match_string", Pinfo_match_string, pushnil_param, PARAM_NONE },
{NULL,NULL,NULL,PARAM_NONE}
};
static int pushnil(lua_State* L) {
lua_pushnil(L);
return 1;
}
static int Pinfo_index(lua_State* L) {
Pinfo pinfo = checkPinfo(L,1);
const gchar* name = luaL_checkstring(L,2);
lua_CFunction method = pushnil;
const pinfo_method_t* curr;
if (! (pinfo && name) ) {
lua_pushnil(L);
return 1;
}
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
for (curr = Pinfo_methods ; curr->name ; curr++) {
if (g_str_equal(curr->name,name)) {
method = curr->get;
break;
}
}
lua_settop(L,1);
return method(L);
}
static int Pinfo_setindex(lua_State* L) {
Pinfo pinfo = checkPinfo(L,1);
const gchar* name = luaL_checkstring(L,2);
int (*method)(lua_State*, packet_info* pinfo, pinfo_param_type_t) = pushnil_param;
const pinfo_method_t* curr;
pinfo_param_type_t param_type = PARAM_NONE;
if (! (pinfo && name) ) {
return 0;
}
if (pinfo->expired) {
luaL_error(L,"expired_pinfo");
return 0;
}
for (curr = Pinfo_methods ; curr->name ; curr++) {
if (g_str_equal(curr->name,name)) {
method = curr->set;
param_type = curr->param;
break;
}
}
lua_remove(L,1);
lua_remove(L,1);
return method(L,pinfo->ws_pinfo,param_type);
}
static int Pinfo_gc(lua_State* L) {
Pinfo pinfo = checkPinfo(L,1);
if (!pinfo) return 0;
if (!pinfo->expired)
pinfo->expired = TRUE;
else
g_free(pinfo);
return 0;
}
static const luaL_Reg Pinfo_meta[] = {
{"__index", Pinfo_index},
{"__newindex",Pinfo_setindex},
{"__tostring", Pinfo_tostring},
{"__gc", Pinfo_gc},
{ NULL, NULL }
};
int Pinfo_register(lua_State* L) {
WSLUA_REGISTER_META(Pinfo);
outstanding_Pinfo = g_ptr_array_new();
outstanding_Column = g_ptr_array_new();
outstanding_Columns = g_ptr_array_new();
outstanding_PrivateTable = g_ptr_array_new();
return 1;
}
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