diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/file_sys/patch_manager.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/core/file_sys/patch_manager.cpp b/src/core/file_sys/patch_manager.cpp index 10b4acc92..044e01ae9 100644 --- a/src/core/file_sys/patch_manager.cpp +++ b/src/core/file_sys/patch_manager.cpp @@ -6,13 +6,16 @@ #include <array> #include <cstddef> +#include "common/hex_util.h" #include "common/logging/log.h" #include "core/file_sys/content_archive.h" #include "core/file_sys/control_metadata.h" +#include "core/file_sys/ips_layer.h" #include "core/file_sys/patch_manager.h" #include "core/file_sys/registered_cache.h" #include "core/file_sys/romfs.h" #include "core/file_sys/vfs_layered.h" +#include "core/file_sys/vfs_vector.h" #include "core/hle/service/filesystem/filesystem.h" #include "core/loader/loader.h" @@ -21,6 +24,14 @@ namespace FileSys { constexpr u64 SINGLE_BYTE_MODULUS = 0x100; constexpr u64 DLC_BASE_TITLE_ID_MASK = 0xFFFFFFFFFFFFE000; +struct NSOBuildHeader { + u32_le magic; + INSERT_PADDING_BYTES(0x3C); + std::array<u8, 0x20> build_id; + INSERT_PADDING_BYTES(0xA0); +}; +static_assert(sizeof(NSOBuildHeader) == 0x100, "NSOBuildHeader has incorrect size."); + std::string FormatTitleVersion(u32 version, TitleVersionFormat format) { std::array<u8, sizeof(u32)> bytes{}; bytes[0] = version % SINGLE_BYTE_MODULUS; @@ -61,6 +72,89 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const { return exefs; } +std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso) const { + if (nso.size() < 0x100) + return nso; + + NSOBuildHeader header{}; + std::memcpy(&header, nso.data(), sizeof(NSOBuildHeader)); + + if (header.magic != Common::MakeMagic('N', 'S', 'O', '0')) + return nso; + + const auto build_id_raw = Common::HexArrayToString(header.build_id); + const auto build_id = build_id_raw.substr(0, build_id_raw.find_last_not_of('0') + 1); + + LOG_INFO(Loader, "Patching NSO for build_id={}", build_id); + + const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); + auto patch_dirs = load_dir->GetSubdirectories(); + std::sort(patch_dirs.begin(), patch_dirs.end(), + [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); }); + + std::vector<VirtualFile> ips; + ips.reserve(patch_dirs.size() - 1); + for (const auto& subdir : patch_dirs) { + auto exefs_dir = subdir->GetSubdirectory("exefs"); + if (exefs_dir != nullptr) { + for (const auto& file : exefs_dir->GetFiles()) { + if (file->GetExtension() != "ips") + continue; + auto name = file->GetName(); + const auto p1 = name.substr(0, name.find_first_of('.')); + const auto this_build_id = p1.substr(0, p1.find_last_not_of('0') + 1); + + if (build_id == this_build_id) + ips.push_back(file); + } + } + } + + auto out = nso; + for (const auto& ips_file : ips) { + LOG_INFO(Loader, " - Appling IPS patch from mod \"{}\"", + ips_file->GetContainingDirectory()->GetParentDirectory()->GetName()); + const auto patched = PatchIPS(std::make_shared<VectorVfsFile>(out), ips_file); + if (patched != nullptr) + out = patched->ReadAllBytes(); + } + + if (out.size() < 0x100) + return nso; + std::memcpy(out.data(), &header, sizeof(NSOBuildHeader)); + return out; +} + +bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const { + const auto build_id_raw = Common::HexArrayToString(build_id_); + const auto build_id = build_id_raw.substr(0, build_id_raw.find_last_not_of('0') + 1); + + LOG_INFO(Loader, "Querying NSO patch existence for build_id={}", build_id); + + const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); + auto patch_dirs = load_dir->GetSubdirectories(); + std::sort(patch_dirs.begin(), patch_dirs.end(), + [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); }); + + for (const auto& subdir : patch_dirs) { + auto exefs_dir = subdir->GetSubdirectory("exefs"); + if (exefs_dir != nullptr) { + for (const auto& file : exefs_dir->GetFiles()) { + if (file->GetExtension() != "ips") + continue; + auto name = file->GetName(); + const auto p1 = name.substr(0, name.find_first_of('.')); + const auto this_build_id = p1.substr(0, p1.find_last_not_of('0') + 1); + + if (build_id == this_build_id) + return true; + } + } + } + + return false; +} + static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) { const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id); if (type != ContentRecordType::Program || load_dir == nullptr || load_dir->GetSize() <= 0) { |