WSLUA_METAMETHOD FieldInfo__eq(lua_State* L) {
/* Checks whether lhs is within rhs */
FieldInfo l = checkFieldInfo(L,1);
FieldInfo r = checkFieldInfo(L,2);
if (l->ds_tvb != r->ds_tvb)
WSLUA_ERROR(FieldInfo__eq,"Data source must be the same for both fields");
if (l->start <= r->start && r->start + r->length <= l->start + r->length) {
lua_pushboolean(L,1);
return 1;
} else {
return 0;
}
}
WSLUA_METAMETHOD FieldInfo__eq(lua_State* L) {
/* Checks whether lhs is within rhs. */
FieldInfo l = checkFieldInfo(L,1);
FieldInfo r = checkFieldInfo(L,2);
/* it is not an error if their ds_tvb are different... they're just not equal */
if (l->ws_fi->ds_tvb == r->ws_fi->ds_tvb &&
l->ws_fi->start == r->ws_fi->start &&
r->ws_fi->length == l->ws_fi->length) {
lua_pushboolean(L,1);
} else {
lua_pushboolean(L,0);
}
return 1;
}
WSLUA_METAMETHOD FieldInfo__le(lua_State* L) {
/* Checks whether the end byte of lhs is before the end of rhs */
FieldInfo l = checkFieldInfo(L,1);
FieldInfo r = checkFieldInfo(L,2);
if (l->ds_tvb != r->ds_tvb)
return 0;
if (r->start + r->length <= l->start + r->length) {
lua_pushboolean(L,1);
return 1;
} else {
return 0;
}
}
WSLUA_METAMETHOD FieldInfo__le(lua_State* L) {
/* Checks whether the end byte of lhs is before the end of rhs. */
FieldInfo l = checkFieldInfo(L,1);
FieldInfo r = checkFieldInfo(L,2);
if (l->ws_fi->ds_tvb != r->ws_fi->ds_tvb)
WSLUA_ERROR(FieldInfo__le,"Data source must be the same for both fields");
if (r->ws_fi->start + r->ws_fi->length <= l->ws_fi->start + l->ws_fi->length) {
lua_pushboolean(L,1);
} else {
lua_pushboolean(L,0);
}
return 1;
}
WSLUA_METAMETHOD FieldInfo__lt(lua_State* L) {
/* Checks whether the end byte of rhs is before the beginning of rhs */
FieldInfo l = checkFieldInfo(L,1);
FieldInfo r = checkFieldInfo(L,2);
if (l->ds_tvb != r->ds_tvb)
WSLUA_ERROR(FieldInfo__lt,"Data source must be the same for both fields");
if ( r->start + r->length < l->start ) {
lua_pushboolean(L,1);
return 1;
} else {
return 0;
}
}
WSLUA_METAMETHOD FieldInfo__tostring(lua_State* L) {
/* The string representation of the field */
FieldInfo fi = checkFieldInfo(L,1);
if (!fi) {
return luaL_error(L,"Missing FieldInfo object");
}
if (fi->value.ftype->val_to_string_repr) {
gchar* repr = fvalue_to_string_repr(&fi->value,FTREPR_DISPLAY,NULL);
if (repr) {
lua_pushstring(L,repr);
}
else {
lua_pushstring(L,"(unknown)");
}
}
else if (fi->hfinfo->type == FT_NONE) {
lua_pushstring(L, "(none)");
}
else {
lua_pushstring(L,"(n/a)");
}
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_name RO The name of this field */
static int FieldInfo_get_name(lua_State* L) {
/* The filter name of this field. */
FieldInfo fi = checkFieldInfo(L,1);
lua_pushstring(L,fi->ws_fi->hfinfo->abbrev);
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_generated RO Whether this field was marked as generated (boolean) */
static int FieldInfo_get_generated(lua_State* L) {
/* Whether this field was marked as generated. */
FieldInfo fi = checkFieldInfo(L,1);
lua_pushboolean(L,FI_GET_FLAG(fi->ws_fi, FI_GENERATED));
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_label RO The string representing this field */
WSLUA_METAMETHOD FieldInfo__tostring(lua_State* L) {
/* The string representation of the field. */
FieldInfo fi = checkFieldInfo(L,1);
if (fi->ws_fi->value.ftype->val_to_string_repr) {
gchar* repr = NULL;
if (fi->ws_fi->hfinfo->type == FT_PROTOCOL || fi->ws_fi->hfinfo->type == FT_PCRE) {
repr = fvalue_to_string_repr(&fi->ws_fi->value,FTREPR_DFILTER,BASE_NONE,NULL);
}
else {
repr = fvalue_to_string_repr(&fi->ws_fi->value,FTREPR_DISPLAY,fi->ws_fi->hfinfo->display,NULL);
}
if (repr) {
lua_pushstring(L,repr);
/* fvalue_to_string_repr() g_malloc's the string's buffer */
g_free(repr);
}
else {
lua_pushstring(L,"(unknown)");
}
}
else if (fi->ws_fi->hfinfo->type == FT_NONE) {
lua_pushstring(L, "(none)");
}
else {
lua_pushstring(L,"(n/a)");
}
return 1;
}
static int FieldInfo_display(lua_State* L) {
/* The display string of this field as seen in GUI */
FieldInfo fi = checkFieldInfo(L,1);
gchar label_str[ITEM_LABEL_LENGTH+1];
gchar *label_ptr;
gchar *value_ptr;
if (!fi) return 0;
if (!fi->rep) {
label_ptr = label_str;
proto_item_fill_label(fi, label_str);
} else
label_ptr = fi->rep->representation;
if (!label_ptr) return 0;
value_ptr = strstr(label_ptr, ": ");
if (!value_ptr) {
/* just use whatever's there */
lua_pushstring(L, label_ptr);
} else {
value_ptr += 2; /* get past the ': ' */
lua_pushstring(L, value_ptr);
}
return 1;
}
WSLUA_METAMETHOD FieldInfo__len(lua_State* L) {
/*
Obtain the Length of the field
*/
FieldInfo fi = checkFieldInfo(L,1);
lua_pushnumber(L,fi->length);
return 1;
}
WSLUA_METAMETHOD FieldInfo__unm(lua_State* L) {
/*
Obtain the Offset of the field
*/
FieldInfo fi = checkFieldInfo(L,1);
lua_pushnumber(L,fi->start);
return 1;
}
static int FieldInfo_get_range(lua_State* L) {
/* The TvbRange covering this field */
FieldInfo fi = checkFieldInfo(L,1);
if (push_TvbRange (L, fi->ds_tvb, fi->start, fi->length)) {
return 1;
}
return 0;
}
/* WSLUA_ATTRIBUTE FieldInfo_range RO The `TvbRange` covering the bytes of this field in a Tvb. */
static int FieldInfo_get_range(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
if (push_TvbRange (L, fi->ws_fi->ds_tvb, fi->ws_fi->start, fi->ws_fi->length)) {
return 1;
}
return 0;
}
/* WSLUA_ATTRIBUTE FieldInfo_type RO The internal field type, a number which
matches one of the `ftype` values in `init.lua`.
@since 1.99.8
*/
static int FieldInfo_get_type(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
if (fi->ws_fi->hfinfo) {
lua_pushnumber(L, fi->ws_fi->hfinfo->type);
}
else {
lua_pushnil(L);
}
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_source RO The source `Tvb` object the `FieldInfo` is derived
from, or nil if there is none.
@since 1.99.8
*/
static int FieldInfo_get_source(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
if (fi->ws_fi->ds_tvb) {
push_Tvb(L, fi->ws_fi->ds_tvb);
}
else {
lua_pushnil(L);
}
return 1;
}
static int FieldInfo_get_range(lua_State* L) {
/* The TvbRange covering this field */
FieldInfo fi = checkFieldInfo(L,1);
TvbRange r = ep_new(struct _wslua_tvbrange);
r->tvb = ep_new(struct _wslua_tvb);
r->tvb->ws_tvb = fi->ds_tvb;
r->offset = fi->start;
r->len = fi->length;
pushTvbRange(L,r);
return 1;
}
WSLUA_METAMETHOD FieldInfo__tostring(lua_State* L) {
/* The string representation of the field */
FieldInfo fi = checkFieldInfo(L,1);
if (fi) {
if (fi->value.ftype->val_to_string_repr) {
gchar* repr = fvalue_to_string_repr(&fi->value,FTREPR_DISPLAY,NULL);
if (repr)
lua_pushstring(L,repr);
else
luaL_error(L,"field cannot be represented as string because it may contain invalid characters");
} else
luaL_error(L,"field has no string representation");
}
return 1;
}
static int FieldInfo__index(lua_State* L) {
/*
Other attributes:
*/
const gchar* idx = luaL_checkstring(L,2);
const luaL_Reg* r;
checkFieldInfo(L,1);
for (r = FieldInfo_get; r->name; r++) {
if (g_str_equal(r->name, idx)) {
return r->func(L);
}
}
return 0;
}
WSLUA_METAMETHOD FieldInfo__call(lua_State* L) {
/*
Obtain the Value of the field
*/
FieldInfo fi = checkFieldInfo(L,1);
switch(fi->hfinfo->type) {
case FT_BOOLEAN:
lua_pushboolean(L,(int)fvalue_get_uinteger(&(fi->value)));
return 1;
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
case FT_FRAMENUM:
lua_pushnumber(L,(lua_Number)fvalue_get_uinteger(&(fi->value)));
return 1;
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
lua_pushnumber(L,(lua_Number)fvalue_get_sinteger(&(fi->value)));
return 1;
case FT_FLOAT:
case FT_DOUBLE:
lua_pushnumber(L,(lua_Number)fvalue_get_floating(&(fi->value)));
return 1;
case FT_INT64: {
Int64 num = (Int64)g_malloc(sizeof(gint64));
*num = fvalue_get_integer64(&(fi->value));
pushInt64(L,num);
return 1;
}
case FT_UINT64: {
UInt64 num = (UInt64)g_malloc(sizeof(guint64));
*num = fvalue_get_integer64(&(fi->value));
pushUInt64(L,num);
return 1;
}
case FT_ETHER: {
Address eth = (Address)g_malloc(sizeof(address));
eth->type = AT_ETHER;
eth->len = fi->length;
eth->data = tvb_memdup(NULL,fi->ds_tvb,fi->start,fi->length);
pushAddress(L,eth);
return 1;
}
case FT_IPv4:{
Address ipv4 = (Address)g_malloc(sizeof(address));
ipv4->type = AT_IPv4;
ipv4->len = fi->length;
ipv4->data = tvb_memdup(NULL,fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipv4);
return 1;
}
case FT_IPv6: {
Address ipv6 = (Address)g_malloc(sizeof(address));
ipv6->type = AT_IPv6;
ipv6->len = fi->length;
ipv6->data = tvb_memdup(NULL,fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipv6);
return 1;
}
case FT_IPXNET:{
Address ipx = (Address)g_malloc(sizeof(address));
ipx->type = AT_IPX;
ipx->len = fi->length;
ipx->data = tvb_memdup(NULL,fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipx);
return 1;
}
case FT_ABSOLUTE_TIME:
case FT_RELATIVE_TIME: {
NSTime nstime = (NSTime)g_malloc(sizeof(nstime_t));
*nstime = *(NSTime)fvalue_get(&(fi->value));
pushNSTime(L,nstime);
return 1;
}
case FT_STRING:
case FT_STRINGZ: {
gchar* repr = fvalue_to_string_repr(&fi->value,FTREPR_DISPLAY,NULL);
if (repr)
lua_pushstring(L,repr);
else
luaL_error(L,"field cannot be represented as string because it may contain invalid characters");
return 1;
}
case FT_NONE:
if (fi->length == 0) {
lua_pushnil(L);
return 1;
}
/* FALLTHROUGH */
case FT_BYTES:
case FT_UINT_BYTES:
case FT_GUID:
case FT_PROTOCOL:
case FT_REL_OID:
case FT_SYSTEM_ID:
case FT_OID: {
ByteArray ba = g_byte_array_new();
g_byte_array_append(ba, (const guint8 *)tvb_memdup(wmem_packet_scope(),fi->ds_tvb,fi->start,fi->length),fi->length);
pushByteArray(L,ba);
return 1;
}
default:
luaL_error(L,"FT_ not yet supported");
return 1;
}
}
/* WSLUA_ATTRIBUTE FieldInfo_hidden RO Whether this field was marked as hidden (boolean).
@since 1.99.8
*/
static int FieldInfo_get_hidden(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
lua_pushboolean(L,FI_GET_FLAG(fi->ws_fi, FI_HIDDEN));
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_is_url RO Whether this field was marked as being a URL (boolean).
@since 1.99.8
*/
static int FieldInfo_get_is_url(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
lua_pushboolean(L,FI_GET_FLAG(fi->ws_fi, FI_URL));
return 1;
}
/* WSLUA_ATTRIBUTE FieldInfo_big_endian RO Whether this field is big-endian encoded (boolean).
@since 1.99.8
*/
static int FieldInfo_get_big_endian(lua_State* L) {
FieldInfo fi = checkFieldInfo(L,1);
lua_pushboolean(L,FI_GET_FLAG(fi->ws_fi, FI_BIG_ENDIAN));
return 1;
}
WSLUA_METAMETHOD FieldInfo__call(lua_State* L) {
/*
Obtain the Value of the field
*/
FieldInfo fi = checkFieldInfo(L,1);
switch(fi->hfinfo->type) {
case FT_NONE:
lua_pushnil(L);
return 1;
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
case FT_FRAMENUM:
lua_pushnumber(L,(lua_Number)fvalue_get_uinteger(&(fi->value)));
return 1;
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
lua_pushnumber(L,(lua_Number)fvalue_get_sinteger(&(fi->value)));
return 1;
case FT_FLOAT:
case FT_DOUBLE:
lua_pushnumber(L,(lua_Number)fvalue_get_floating(&(fi->value)));
return 1;
case FT_INT64: {
Int64 num = g_malloc(sizeof(gint64));
*num = fvalue_get_integer64(&(fi->value));
pushInt64(L,num);
return 1;
}
case FT_UINT64: {
UInt64 num = g_malloc(sizeof(guint64));
*num = fvalue_get_integer64(&(fi->value));
pushUInt64(L,num);
return 1;
}
case FT_ETHER: {
Address eth = g_malloc(sizeof(address));
eth->type = AT_ETHER;
eth->len = fi->length;
eth->data = tvb_memdup(fi->ds_tvb,fi->start,fi->length);
pushAddress(L,eth);
return 1;
}
case FT_IPv4:{
Address ipv4 = g_malloc(sizeof(address));
ipv4->type = AT_IPv4;
ipv4->len = fi->length;
ipv4->data = tvb_memdup(fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipv4);
return 1;
}
case FT_IPv6: {
Address ipv6 = g_malloc(sizeof(address));
ipv6->type = AT_IPv6;
ipv6->len = fi->length;
ipv6->data = tvb_memdup(fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipv6);
return 1;
}
case FT_IPXNET:{
Address ipx = g_malloc(sizeof(address));
ipx->type = AT_IPX;
ipx->len = fi->length;
ipx->data = tvb_memdup(fi->ds_tvb,fi->start,fi->length);
pushAddress(L,ipx);
return 1;
}
case FT_STRING:
case FT_STRINGZ: {
gchar* repr = fvalue_to_string_repr(&fi->value,FTREPR_DISPLAY,NULL);
if (repr)
lua_pushstring(L,repr);
else
luaL_error(L,"field cannot be represented as string because it may contain invalid characters");
return 1;
}
case FT_BYTES:
case FT_UINT_BYTES:
case FT_GUID:
case FT_OID: {
ByteArray ba = g_byte_array_new();
g_byte_array_append(ba, ep_tvb_memdup(fi->ds_tvb,fi->start,fi->length),fi->length);
pushByteArray(L,ba);
return 1;
}
default:
luaL_error(L,"FT_ not yet supported");
return 1;
}
}
/* WSLUA_ATTRIBUTE FieldInfo_value RO The value of this field. */
WSLUA_METAMETHOD FieldInfo__call(lua_State* L) {
/*
Obtain the Value of the field.
Previous to 1.11.4, this function retrieved the value for most field types,
but for `ftypes.UINT_BYTES` it retrieved the `ByteArray` of the field's entire `TvbRange`.
In other words, it returned a `ByteArray` that included the leading length byte(s),
instead of just the *value* bytes. That was a bug, and has been changed in 1.11.4.
Furthermore, it retrieved an `ftypes.GUID` as a `ByteArray`, which is also incorrect.
If you wish to still get a `ByteArray` of the `TvbRange`, use `FieldInfo:get_range()`
to get the `TvbRange`, and then use `Tvb:bytes()` to convert it to a `ByteArray`.
*/
FieldInfo fi = checkFieldInfo(L,1);
switch(fi->ws_fi->hfinfo->type) {
case FT_BOOLEAN:
lua_pushboolean(L,(int)fvalue_get_uinteger(&(fi->ws_fi->value)));
return 1;
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
case FT_FRAMENUM:
lua_pushnumber(L,(lua_Number)(fvalue_get_uinteger(&(fi->ws_fi->value))));
return 1;
case FT_INT8:
case FT_INT16:
case FT_INT24:
case FT_INT32:
lua_pushnumber(L,(lua_Number)(fvalue_get_sinteger(&(fi->ws_fi->value))));
return 1;
case FT_FLOAT:
case FT_DOUBLE:
lua_pushnumber(L,(lua_Number)(fvalue_get_floating(&(fi->ws_fi->value))));
return 1;
case FT_INT64: {
pushInt64(L,(Int64)(fvalue_get_sinteger64(&(fi->ws_fi->value))));
return 1;
}
case FT_UINT64: {
pushUInt64(L,fvalue_get_uinteger64(&(fi->ws_fi->value)));
return 1;
}
case FT_ETHER: {
Address eth = (Address)g_malloc(sizeof(address));
eth->type = AT_ETHER;
eth->len = fi->ws_fi->length;
eth->data = tvb_memdup(NULL,fi->ws_fi->ds_tvb,fi->ws_fi->start,fi->ws_fi->length);
pushAddress(L,eth);
return 1;
}
case FT_IPv4:{
Address ipv4 = (Address)g_malloc(sizeof(address));
ipv4->type = AT_IPv4;
ipv4->len = fi->ws_fi->length;
ipv4->data = tvb_memdup(NULL,fi->ws_fi->ds_tvb,fi->ws_fi->start,fi->ws_fi->length);
pushAddress(L,ipv4);
return 1;
}
case FT_IPv6: {
Address ipv6 = (Address)g_malloc(sizeof(address));
ipv6->type = AT_IPv6;
ipv6->len = fi->ws_fi->length;
ipv6->data = tvb_memdup(NULL,fi->ws_fi->ds_tvb,fi->ws_fi->start,fi->ws_fi->length);
pushAddress(L,ipv6);
return 1;
}
case FT_FCWWN: {
Address fcwwn = (Address)g_malloc(sizeof(address));
fcwwn->type = AT_FCWWN;
fcwwn->len = fi->ws_fi->length;
fcwwn->data = tvb_memdup(NULL,fi->ws_fi->ds_tvb,fi->ws_fi->start,fi->ws_fi->length);
pushAddress(L,fcwwn);
return 1;
}
case FT_IPXNET:{
Address ipx = (Address)g_malloc(sizeof(address));
ipx->type = AT_IPX;
ipx->len = fi->ws_fi->length;
ipx->data = tvb_memdup(NULL,fi->ws_fi->ds_tvb,fi->ws_fi->start,fi->ws_fi->length);
pushAddress(L,ipx);
return 1;
}
case FT_ABSOLUTE_TIME:
case FT_RELATIVE_TIME: {
NSTime nstime = (NSTime)g_malloc(sizeof(nstime_t));
*nstime = *(NSTime)fvalue_get(&(fi->ws_fi->value));
pushNSTime(L,nstime);
return 1;
}
case FT_STRING:
case FT_STRINGZ: {
gchar* repr = fvalue_to_string_repr(&fi->ws_fi->value,FTREPR_DISPLAY,BASE_NONE,NULL);
if (repr)
lua_pushstring(L,repr);
else
luaL_error(L,"field cannot be represented as string because it may contain invalid characters");
return 1;
}
case FT_NONE:
if (fi->ws_fi->length > 0 && fi->ws_fi->rep) {
/* it has a length, but calling fvalue_get() on an FT_NONE asserts,
so get the label instead (it's a FT_NONE, so a label is what it basically is) */
lua_pushstring(L, fi->ws_fi->rep->representation);
return 1;
}
return 0;
case FT_BYTES:
case FT_UINT_BYTES:
case FT_REL_OID:
case FT_SYSTEM_ID:
case FT_OID:
{
ByteArray ba = g_byte_array_new();
g_byte_array_append(ba, (const guint8 *) fvalue_get(&fi->ws_fi->value),
fvalue_length(&fi->ws_fi->value));
pushByteArray(L,ba);
return 1;
}
case FT_PROTOCOL:
{
ByteArray ba = g_byte_array_new();
tvbuff_t* tvb = (tvbuff_t *) fvalue_get(&fi->ws_fi->value);
g_byte_array_append(ba, (const guint8 *)tvb_memdup(wmem_packet_scope(), tvb, 0,
tvb_captured_length(tvb)), tvb_captured_length(tvb));
pushByteArray(L,ba);
return 1;
}
case FT_GUID:
default:
luaL_error(L,"FT_ not yet supported");
return 1;
}
}
