mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-11 07:26:08 +01:00
4059dc6187
Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).
103 lines
4.0 KiB
C++
103 lines
4.0 KiB
C++
/*
|
|
* Copyright (c) 2018-2019 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stratosphere/map.hpp>
|
|
|
|
#include "ro_nrr_utils.hpp"
|
|
#include "ro_service_impl.hpp"
|
|
|
|
namespace sts::ro::impl {
|
|
|
|
namespace {
|
|
|
|
/* Helper functions. */
|
|
Result ValidateNrrSignature(const NrrHeader *header) {
|
|
/* TODO: Implement RSA-2048 PSS..... */
|
|
|
|
/* TODO: Check PSS fixed-key signature. */
|
|
R_UNLESS(true, ResultNotAuthorized());
|
|
|
|
/* Check TitleID pattern is valid. */
|
|
R_UNLESS(header->IsTitleIdValid(), ResultNotAuthorized());
|
|
|
|
/* TODO: Check PSS signature over hashes. */
|
|
R_UNLESS(true, ResultNotAuthorized());
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ValidateNrr(const NrrHeader *header, u64 size, ncm::TitleId title_id, ModuleType expected_type, bool enforce_type) {
|
|
/* Check magic. */
|
|
R_UNLESS(header->IsMagicValid(), ResultInvalidNrr());
|
|
|
|
/* Check size. */
|
|
R_UNLESS(header->GetSize() == size, ResultInvalidSize());
|
|
|
|
/* Only perform checks if we must. */
|
|
const bool ease_nro_restriction = ShouldEaseNroRestriction();
|
|
if (!ease_nro_restriction) {
|
|
/* Check signature. */
|
|
R_TRY(ValidateNrrSignature(header));
|
|
|
|
/* Check title id. */
|
|
R_UNLESS(header->GetTitleId() == title_id, ResultInvalidNrr());
|
|
|
|
/* Check type. */
|
|
if (hos::GetVersion() >= hos::Version_700 && enforce_type) {
|
|
R_UNLESS(header->GetType() == expected_type, ResultInvalidNrrType());
|
|
}
|
|
}
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
}
|
|
|
|
/* Utilities for working with NRRs. */
|
|
Result MapAndValidateNrr(NrrHeader **out_header, u64 *out_mapped_code_address, Handle process_handle, ncm::TitleId title_id, u64 nrr_heap_address, u64 nrr_heap_size, ModuleType expected_type, bool enforce_type) {
|
|
map::MappedCodeMemory nrr_mcm(ResultInternalError{});
|
|
|
|
/* First, map the NRR. */
|
|
R_TRY(map::MapCodeMemoryInProcess(nrr_mcm, process_handle, nrr_heap_address, nrr_heap_size));
|
|
|
|
const u64 code_address = nrr_mcm.GetDstAddress();
|
|
uintptr_t map_address;
|
|
R_UNLESS(R_SUCCEEDED(map::LocateMappableSpace(&map_address, nrr_heap_size)), ResultOutOfAddressSpace());
|
|
|
|
/* Nintendo...does not check the return value of this map. We will check, instead of aborting if it fails. */
|
|
map::AutoCloseMap nrr_map(map_address, process_handle, code_address, nrr_heap_size);
|
|
R_TRY(nrr_map.GetResult());
|
|
|
|
NrrHeader *nrr_header = reinterpret_cast<NrrHeader *>(map_address);
|
|
R_TRY(ValidateNrr(nrr_header, nrr_heap_size, title_id, expected_type, enforce_type));
|
|
|
|
/* Invalidation here actually prevents them from unmapping at scope exit. */
|
|
nrr_map.Invalidate();
|
|
nrr_mcm.Invalidate();
|
|
|
|
*out_header = nrr_header;
|
|
*out_mapped_code_address = code_address;
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result UnmapNrr(Handle process_handle, const NrrHeader *header, u64 nrr_heap_address, u64 nrr_heap_size, u64 mapped_code_address) {
|
|
R_TRY(svcUnmapProcessMemory(reinterpret_cast<void *>(const_cast<NrrHeader *>(header)), process_handle, mapped_code_address, nrr_heap_size));
|
|
R_TRY(svcUnmapProcessCodeMemory(process_handle, mapped_code_address, nrr_heap_address, nrr_heap_size));
|
|
return ResultSuccess();
|
|
}
|
|
|
|
}
|