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This commit is contained in:
ahmed
2026-07-14 02:27:33 +03:00
parent 4f6d2d0801
commit 1ca9fc477b
19 changed files with 879 additions and 146 deletions
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Libraries/Esiur/Data/ParsedTdu.cs
+27 -6
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@@ -27,8 +27,6 @@ namespace Esiur.Data
public static async AsyncReply<ParsedTdu> ParseAsync(byte[] data, uint offset, uint ends, EpConnection connection)
{
// @TODO: add protection against memory allocation attacks by checking the length of the data before parsing it.
var h = data[offset++];
var cls = (TduClass)(h >> 6);
@@ -91,6 +89,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(ParserGuard.GetWarehouse(connection), cl);
if (ends - offset < cl)
return new ParsedTdu()
{
@@ -102,6 +102,10 @@ namespace Esiur.Data
//offset += data[offset] + (uint)1;
var metaDataTru = await Tru.ParseAsync(data, offset, connection, null);
if (metaDataTru.Size > cl)
throw new ParserLimitException("Typed TDU metadata exceeds its declared payload length.");
offset += metaDataTru.Size;
return new ParsedTdu()
@@ -133,6 +137,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(ParserGuard.GetWarehouse(connection), cl);
if (ends - offset < cl)
return new ParsedTdu()
{
@@ -158,8 +164,6 @@ namespace Esiur.Data
public static object Parse(byte[] data, uint offset, uint ends, EpConnection connection)
{
// @TODO: add protection against memory allocation attacks by checking the length of the data before parsing it.
var h = data[offset++];
var cls = (TduClass)(h >> 6);
@@ -222,6 +226,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(ParserGuard.GetWarehouse(connection), cl);
if (ends - offset < cl)
return new ParsedTdu()
{
@@ -235,6 +241,13 @@ namespace Esiur.Data
Tru.ParseAsync(data, offset, connection, null).Then(metaDataTru =>
{
if (metaDataTru.Size > cl)
{
rt.TriggerError(new ParserLimitException(
"Typed TDU metadata exceeds its declared payload length."));
return;
}
offset += metaDataTru.Size;
rt.Trigger(new ParsedTdu()
@@ -269,6 +282,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(ParserGuard.GetWarehouse(connection), cl);
if (ends - offset < cl)
return new ParsedTdu()
{
@@ -347,8 +362,6 @@ namespace Esiur.Data
public static ParsedTdu ParseSync(byte[] data, uint offset, uint ends, Warehouse warehouse)
{
// @TODO: add protection against memory allocation attacks by checking the length of the data before parsing it.
var h = data[offset++];
var cls = (TduClass)(h >> 6);
@@ -411,6 +424,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(warehouse, cl);
if (ends - offset < cl)
return new ParsedTdu()
{
@@ -422,6 +437,10 @@ namespace Esiur.Data
//offset += data[offset] + (uint)1;
var metaDataTru = Tru.Parse(data, offset, warehouse);
if (metaDataTru.Size > cl)
throw new ParserLimitException("Typed TDU metadata exceeds its declared payload length.");
offset += metaDataTru.Size;
return new ParsedTdu()
@@ -453,6 +472,8 @@ namespace Esiur.Data
for (uint i = 0; i < cll; i++)
cl = cl << 8 | data[offset++];
ParserGuard.EnsurePacketSize(warehouse, cl);
if (ends - offset < cl)
return new ParsedTdu()
{