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author | Narr the Reg <juangerman-13@hotmail.com> | 2022-09-03 20:30:29 +0200 |
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committer | Liam <byteslice@airmail.cc> | 2022-09-03 23:32:12 +0200 |
commit | c7a814f10fd927dfcc3591fada7d6732213892b2 (patch) | |
tree | cb904fbfe1badf3df1257239a8455e23f544742f /src/core/hle/service/ns/iplatform_service_manager.cpp | |
parent | Merge pull request #8843 from Kelebek1/SILENCE_WENCH (diff) | |
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Diffstat (limited to 'src/core/hle/service/ns/iplatform_service_manager.cpp')
-rw-r--r-- | src/core/hle/service/ns/iplatform_service_manager.cpp | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/src/core/hle/service/ns/iplatform_service_manager.cpp b/src/core/hle/service/ns/iplatform_service_manager.cpp new file mode 100644 index 000000000..fd047ff26 --- /dev/null +++ b/src/core/hle/service/ns/iplatform_service_manager.cpp @@ -0,0 +1,299 @@ +// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <algorithm> +#include <cstring> +#include <vector> + +#include "common/assert.h" +#include "common/common_types.h" +#include "common/logging/log.h" +#include "common/swap.h" +#include "core/core.h" +#include "core/file_sys/content_archive.h" +#include "core/file_sys/nca_metadata.h" +#include "core/file_sys/registered_cache.h" +#include "core/file_sys/romfs.h" +#include "core/file_sys/system_archive/system_archive.h" +#include "core/hle/ipc_helpers.h" +#include "core/hle/kernel/k_shared_memory.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/physical_memory.h" +#include "core/hle/service/filesystem/filesystem.h" +#include "core/hle/service/ns/iplatform_service_manager.h" + +namespace Service::NS { + +struct FontRegion { + u32 offset; + u32 size; +}; + +// The below data is specific to shared font data dumped from Switch on f/w 2.2 +// Virtual address and offsets/sizes likely will vary by dump +[[maybe_unused]] constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL}; +constexpr u32 EXPECTED_RESULT{0x7f9a0218}; // What we expect the decrypted bfttf first 4 bytes to be +constexpr u32 EXPECTED_MAGIC{0x36f81a1e}; // What we expect the encrypted bfttf first 4 bytes to be +constexpr u64 SHARED_FONT_MEM_SIZE{0x1100000}; +constexpr FontRegion EMPTY_REGION{0, 0}; + +enum class LoadState : u32 { + Loading = 0, + Done = 1, +}; + +static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMemory& output, + std::size_t& offset) { + ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE, + "Shared fonts exceeds 17mb!"); + ASSERT_MSG(input[0] == EXPECTED_MAGIC, "Failed to derive key, unexpected magic number"); + + const u32 KEY = input[0] ^ EXPECTED_RESULT; // Derive key using an inverse xor + std::vector<u32> transformed_font(input.size()); + // TODO(ogniK): Figure out a better way to do this + std::transform(input.begin(), input.end(), transformed_font.begin(), + [&KEY](u32 font_data) { return Common::swap32(font_data ^ KEY); }); + transformed_font[1] = Common::swap32(transformed_font[1]) ^ KEY; // "re-encrypt" the size + std::memcpy(output.data() + offset, transformed_font.data(), + transformed_font.size() * sizeof(u32)); + offset += transformed_font.size() * sizeof(u32); +} + +void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output) { + ASSERT_MSG(input[0] == EXPECTED_MAGIC, "Failed to derive key, unexpected magic number"); + + if (input.size() < 2) { + LOG_ERROR(Service_NS, "Input font is empty"); + return; + } + + const u32 KEY = input[0] ^ EXPECTED_RESULT; // Derive key using an inverse xor + std::vector<u32> transformed_font(input.size()); + // TODO(ogniK): Figure out a better way to do this + std::transform(input.begin(), input.end(), transformed_font.begin(), + [&KEY](u32 font_data) { return Common::swap32(font_data ^ KEY); }); + std::memcpy(output.data(), transformed_font.data() + 2, + (transformed_font.size() - 2) * sizeof(u32)); +} + +void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, + std::size_t& offset) { + ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE, + "Shared fonts exceeds 17mb!"); + + const auto key = Common::swap32(EXPECTED_RESULT ^ EXPECTED_MAGIC); + std::vector<u32> transformed_font(input.size() + 2); + transformed_font[0] = Common::swap32(EXPECTED_MAGIC); + transformed_font[1] = Common::swap32(static_cast<u32>(input.size() * sizeof(u32))) ^ key; + std::transform(input.begin(), input.end(), transformed_font.begin() + 2, + [key](u32 in) { return in ^ key; }); + std::memcpy(output.data() + offset, transformed_font.data(), + transformed_font.size() * sizeof(u32)); + offset += transformed_font.size() * sizeof(u32); +} + +// Helper function to make BuildSharedFontsRawRegions a bit nicer +static u32 GetU32Swapped(const u8* data) { + u32 value; + std::memcpy(&value, data, sizeof(value)); + return Common::swap32(value); +} + +struct IPlatformServiceManager::Impl { + const FontRegion& GetSharedFontRegion(std::size_t index) const { + if (index >= shared_font_regions.size() || shared_font_regions.empty()) { + // No font fallback + return EMPTY_REGION; + } + return shared_font_regions.at(index); + } + + void BuildSharedFontsRawRegions(const Kernel::PhysicalMemory& input) { + // As we can derive the xor key we can just populate the offsets + // based on the shared memory dump + unsigned cur_offset = 0; + + for (std::size_t i = 0; i < SHARED_FONTS.size(); i++) { + // Out of shared fonts/invalid font + if (GetU32Swapped(input.data() + cur_offset) != EXPECTED_RESULT) { + break; + } + + // Derive key withing inverse xor + const u32 KEY = GetU32Swapped(input.data() + cur_offset) ^ EXPECTED_MAGIC; + const u32 SIZE = GetU32Swapped(input.data() + cur_offset + 4) ^ KEY; + shared_font_regions.push_back(FontRegion{cur_offset + 8, SIZE}); + cur_offset += SIZE + 8; + } + } + + /// Backing memory for the shared font data + std::shared_ptr<Kernel::PhysicalMemory> shared_font; + + // Automatically populated based on shared_fonts dump or system archives. + std::vector<FontRegion> shared_font_regions; +}; + +IPlatformServiceManager::IPlatformServiceManager(Core::System& system_, const char* service_name_) + : ServiceFramework{system_, service_name_}, impl{std::make_unique<Impl>()} { + // clang-format off + static const FunctionInfo functions[] = { + {0, &IPlatformServiceManager::RequestLoad, "RequestLoad"}, + {1, &IPlatformServiceManager::GetLoadState, "GetLoadState"}, + {2, &IPlatformServiceManager::GetSize, "GetSize"}, + {3, &IPlatformServiceManager::GetSharedMemoryAddressOffset, "GetSharedMemoryAddressOffset"}, + {4, &IPlatformServiceManager::GetSharedMemoryNativeHandle, "GetSharedMemoryNativeHandle"}, + {5, &IPlatformServiceManager::GetSharedFontInOrderOfPriority, "GetSharedFontInOrderOfPriority"}, + {6, nullptr, "GetSharedFontInOrderOfPriorityForSystem"}, + {100, nullptr, "RequestApplicationFunctionAuthorization"}, + {101, nullptr, "RequestApplicationFunctionAuthorizationByProcessId"}, + {102, nullptr, "RequestApplicationFunctionAuthorizationByApplicationId"}, + {103, nullptr, "RefreshApplicationFunctionBlackListDebugRecord"}, + {104, nullptr, "RequestApplicationFunctionAuthorizationByProgramId"}, + {105, nullptr, "GetFunctionBlackListSystemVersionToAuthorize"}, + {106, nullptr, "GetFunctionBlackListVersion"}, + {1000, nullptr, "LoadNgWordDataForPlatformRegionChina"}, + {1001, nullptr, "GetNgWordDataSizeForPlatformRegionChina"}, + }; + // clang-format on + RegisterHandlers(functions); + + auto& fsc = system.GetFileSystemController(); + + // Attempt to load shared font data from disk + const auto* nand = fsc.GetSystemNANDContents(); + std::size_t offset = 0; + // Rebuild shared fonts from data ncas or synthesize + + impl->shared_font = std::make_shared<Kernel::PhysicalMemory>(SHARED_FONT_MEM_SIZE); + for (auto font : SHARED_FONTS) { + FileSys::VirtualFile romfs; + const auto nca = + nand->GetEntry(static_cast<u64>(font.first), FileSys::ContentRecordType::Data); + if (nca) { + romfs = nca->GetRomFS(); + } + + if (!romfs) { + romfs = FileSys::SystemArchive::SynthesizeSystemArchive(static_cast<u64>(font.first)); + } + + if (!romfs) { + LOG_ERROR(Service_NS, "Failed to find or synthesize {:016X}! Skipping", font.first); + continue; + } + + const auto extracted_romfs = FileSys::ExtractRomFS(romfs); + if (!extracted_romfs) { + LOG_ERROR(Service_NS, "Failed to extract RomFS for {:016X}! Skipping", font.first); + continue; + } + const auto font_fp = extracted_romfs->GetFile(font.second); + if (!font_fp) { + LOG_ERROR(Service_NS, "{:016X} has no file \"{}\"! Skipping", font.first, font.second); + continue; + } + std::vector<u32> font_data_u32(font_fp->GetSize() / sizeof(u32)); + font_fp->ReadBytes<u32>(font_data_u32.data(), font_fp->GetSize()); + // We need to be BigEndian as u32s for the xor encryption + std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(), + Common::swap32); + // Font offset and size do not account for the header + const FontRegion region{static_cast<u32>(offset + 8), + static_cast<u32>((font_data_u32.size() * sizeof(u32)) - 8)}; + DecryptSharedFont(font_data_u32, *impl->shared_font, offset); + impl->shared_font_regions.push_back(region); + } +} + +IPlatformServiceManager::~IPlatformServiceManager() = default; + +void IPlatformServiceManager::RequestLoad(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u32 shared_font_type{rp.Pop<u32>()}; + // Games don't call this so all fonts should be loaded + LOG_DEBUG(Service_NS, "called, shared_font_type={}", shared_font_type); + + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultSuccess); +} + +void IPlatformServiceManager::GetLoadState(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u32 font_id{rp.Pop<u32>()}; + LOG_DEBUG(Service_NS, "called, font_id={}", font_id); + + IPC::ResponseBuilder rb{ctx, 3}; + rb.Push(ResultSuccess); + rb.Push<u32>(static_cast<u32>(LoadState::Done)); +} + +void IPlatformServiceManager::GetSize(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u32 font_id{rp.Pop<u32>()}; + LOG_DEBUG(Service_NS, "called, font_id={}", font_id); + + IPC::ResponseBuilder rb{ctx, 3}; + rb.Push(ResultSuccess); + rb.Push<u32>(impl->GetSharedFontRegion(font_id).size); +} + +void IPlatformServiceManager::GetSharedMemoryAddressOffset(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u32 font_id{rp.Pop<u32>()}; + LOG_DEBUG(Service_NS, "called, font_id={}", font_id); + + IPC::ResponseBuilder rb{ctx, 3}; + rb.Push(ResultSuccess); + rb.Push<u32>(impl->GetSharedFontRegion(font_id).offset); +} + +void IPlatformServiceManager::GetSharedMemoryNativeHandle(Kernel::HLERequestContext& ctx) { + // Map backing memory for the font data + LOG_DEBUG(Service_NS, "called"); + + // Create shared font memory object + std::memcpy(kernel.GetFontSharedMem().GetPointer(), impl->shared_font->data(), + impl->shared_font->size()); + + IPC::ResponseBuilder rb{ctx, 2, 1}; + rb.Push(ResultSuccess); + rb.PushCopyObjects(&kernel.GetFontSharedMem()); +} + +void IPlatformServiceManager::GetSharedFontInOrderOfPriority(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u64 language_code{rp.Pop<u64>()}; // TODO(ogniK): Find out what this is used for + LOG_DEBUG(Service_NS, "called, language_code={:X}", language_code); + + IPC::ResponseBuilder rb{ctx, 4}; + std::vector<u32> font_codes; + std::vector<u32> font_offsets; + std::vector<u32> font_sizes; + + // TODO(ogniK): Have actual priority order + for (std::size_t i = 0; i < impl->shared_font_regions.size(); i++) { + font_codes.push_back(static_cast<u32>(i)); + auto region = impl->GetSharedFontRegion(i); + font_offsets.push_back(region.offset); + font_sizes.push_back(region.size); + } + + // Resize buffers if game requests smaller size output. + font_codes.resize( + std::min<std::size_t>(font_codes.size(), ctx.GetWriteBufferSize(0) / sizeof(u32))); + font_offsets.resize( + std::min<std::size_t>(font_offsets.size(), ctx.GetWriteBufferSize(1) / sizeof(u32))); + font_sizes.resize( + std::min<std::size_t>(font_sizes.size(), ctx.GetWriteBufferSize(2) / sizeof(u32))); + + ctx.WriteBuffer(font_codes, 0); + ctx.WriteBuffer(font_offsets, 1); + ctx.WriteBuffer(font_sizes, 2); + + rb.Push(ResultSuccess); + rb.Push<u8>(static_cast<u8>(LoadState::Done)); // Fonts Loaded + rb.Push<u32>(static_cast<u32>(font_codes.size())); +} + +} // namespace Service::NS |