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sf: fix support for automatic recvlist buffers

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This commit is contained in:
Michael Scire 2019-12-31 00:19:58 -08:00
parent 5a15d62b8b
commit 0b0fdc5c58
1 changed files with 2 additions and 1 deletions
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libraries/libstratosphere/source/sf/hipc/sf_hipc_server_session_manager.cpp
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@ -277,7 +277,8 @@ namespace ams::sf::hipc {
/* Note: Nintendo does not validate this size before subtracting 0x10 from it. This is not exploitable. */
R_UNLESS(in_raw_size >= 0x10, sf::hipc::ResultInvalidRequestSize());
R_UNLESS(in_raw_addr + in_raw_size <= in_message_buffer_end, sf::hipc::ResultInvalidRequestSize());
const uintptr_t recv_list_end = reinterpret_cast<uintptr_t>(dispatch_ctx.request.data.recv_list + dispatch_ctx.request.meta.num_recv_statics);
const size_t recv_list_size = dispatch_ctx.request.meta.num_recv_statics == HIPC_AUTO_RECV_STATIC ? 1 : dispatch_ctx.request.meta.num_recv_statics;
const uintptr_t recv_list_end = reinterpret_cast<uintptr_t>(dispatch_ctx.request.data.recv_list + recv_list_size);
R_UNLESS(recv_list_end <= in_message_buffer_end, sf::hipc::ResultInvalidRequestSize());
/* CMIF has 0x10 of padding in raw data, and requires 0x10 alignment. */