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fix asserts in old merkle code

This commit is contained in:
arvidn 2019-03-17 17:21:28 +01:00 committed by Arvid Norberg
parent 55d549d582
commit bb10385e6c
1 changed files with 10 additions and 1 deletions
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11
src/bt_peer_connection.cpp
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@ -1019,14 +1019,16 @@ namespace {
char const* ptr = recv_buffer.data() + 9;
int const list_size = detail::read_int32(ptr);
if (list_size > m_recv_buffer.packet_size() - 13)
if (list_size > m_recv_buffer.packet_size() - 13 || list_size < 0)
{
received_bytes(0, received);
disconnect(errors::invalid_hash_list, operation_t::bittorrent, peer_error);
return;
}
if (m_recv_buffer.packet_size() - 13 - list_size > t->block_size())
{
received_bytes(0, received);
disconnect(errors::packet_too_large, operation_t::bittorrent, peer_error);
return;
}
@ -1037,6 +1039,7 @@ namespace {
{
if (m_recv_buffer.packet_size() - 9 > t->block_size())
{
received_bytes(0, received);
disconnect(errors::packet_too_large, operation_t::bittorrent, peer_error);
return;
}
@ -1060,6 +1063,12 @@ namespace {
if (merkle)
{
list_size = detail::read_int32(ptr);
if (list_size < 0)
{
received_bytes(0, received);
disconnect(errors::invalid_hash_list, operation_t::bittorrent, peer_error);
return;
}
p.length = m_recv_buffer.packet_size() - list_size - header_size;
header_size += list_size;
}