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Cleanup some of the fragmented levin handling

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This commit is contained in:
Lee *!* Clagett
2026-03-31 14:50:35 -04:00
parent ee1bbe7663
commit 017c9022d7
2 changed files with 33 additions and 5 deletions
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contrib/epee/include/net/levin_protocol_handler_async.h
+12 -4
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@@ -481,18 +481,26 @@ public:
return false;
}
temp = std::move(m_fragment_buffer);
m_fragment_buffer.clear();
temp.swap(m_fragment_buffer);
std::memcpy(std::addressof(m_current_head), std::addressof(temp[0]), sizeof(bucket_head2));
const std::uint64_t inner_size = SWAP64LE(m_current_head.m_cb);
buff_to_invoke = {reinterpret_cast<const uint8_t*>(temp.data()) + sizeof(bucket_head2), temp.size() - sizeof(bucket_head2)};
if (buff_to_invoke.size() < inner_size)
{
MERROR(m_connection_context << "Invalid fragmented buffer size: " << buff_to_invoke.size() << " vs " << inner_size);
return false;
}
buff_to_invoke = {buff_to_invoke.data(), std::size_t(inner_size)};
const size_t max_bytes = m_connection_context.get_max_bytes(m_current_head.m_command);
if(m_current_head.m_cb > std::min<size_t>(max_packet_size, max_bytes))
if(buff_to_invoke.size() > std::min<size_t>(max_packet_size, max_bytes))
{
MERROR(m_connection_context << "Maximum packet size exceed!, m_max_packet_size = " << std::min<size_t>(max_packet_size, max_bytes)
<< ", packet header received " << m_current_head.m_cb << ", command " << m_current_head.m_command
<< ", connection will be closed.");
return false;
}
buff_to_invoke = {reinterpret_cast<const uint8_t*>(temp.data()) + sizeof(bucket_head2), temp.size() - sizeof(bucket_head2)};
}
bool is_response = (m_oponent_protocol_ver == LEVIN_PROTOCOL_VER_1 && m_current_head.m_flags&LEVIN_PACKET_RESPONSE);