diff options
| -rw-r--r-- | src/core/crypto/partition_data_manager.cpp | 131 |
1 files changed, 13 insertions, 118 deletions
diff --git a/src/core/crypto/partition_data_manager.cpp b/src/core/crypto/partition_data_manager.cpp index ed0775444..01a969be9 100644 --- a/src/core/crypto/partition_data_manager.cpp +++ b/src/core/crypto/partition_data_manager.cpp @@ -22,8 +22,10 @@ #include "core/crypto/key_manager.h" #include "core/crypto/partition_data_manager.h" #include "core/crypto/xts_encryption_layer.h" +#include "core/file_sys/kernel_executable.h" #include "core/file_sys/vfs.h" #include "core/file_sys/vfs_offset.h" +#include "core/file_sys/vfs_vector.h" using namespace Common; @@ -45,36 +47,6 @@ struct Package2Header { }; static_assert(sizeof(Package2Header) == 0x200, "Package2Header has incorrect size."); -struct INIHeader { - u32_le magic; - u32_le size; - u32_le process_count; - INSERT_PADDING_BYTES(4); -}; -static_assert(sizeof(INIHeader) == 0x10, "INIHeader has incorrect size."); - -struct SectionHeader { - u32_le offset; - u32_le size_decompressed; - u32_le size_compressed; - u32_le attribute; -}; -static_assert(sizeof(SectionHeader) == 0x10, "SectionHeader has incorrect size."); - -struct KIPHeader { - u32_le magic; - std::array<char, 12> name; - u64_le title_id; - u32_le category; - u8 priority; - u8 core; - INSERT_PADDING_BYTES(1); - u8 flags; - std::array<SectionHeader, 6> sections; - std::array<u32, 0x20> capabilities; -}; -static_assert(sizeof(KIPHeader) == 0x100, "KIPHeader has incorrect size."); - const std::array<SHA256Hash, 0x10> source_hashes{ "B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"_array32, // keyblob_mac_key_source "7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"_array32, // master_key_source @@ -170,65 +142,6 @@ const std::array<SHA256Hash, 0x20> master_key_hashes{ "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1F }; -static std::vector<u8> DecompressBLZ(const std::vector<u8>& in) { - const auto data_size = in.size() - 0xC; - - u32 compressed_size{}; - u32 init_index{}; - u32 additional_size{}; - std::memcpy(&compressed_size, in.data() + data_size, sizeof(u32)); - std::memcpy(&init_index, in.data() + data_size + 0x4, sizeof(u32)); - std::memcpy(&additional_size, in.data() + data_size + 0x8, sizeof(u32)); - - std::vector<u8> out(in.size() + additional_size); - - if (compressed_size == in.size()) - std::memcpy(out.data(), in.data() + in.size() - compressed_size, compressed_size); - else - std::memcpy(out.data(), in.data(), compressed_size); - - auto index = in.size() - init_index; - auto out_index = out.size(); - - while (out_index > 0) { - --index; - auto control = in[index]; - for (size_t i = 0; i < 8; ++i) { - if ((control & 0x80) > 0) { - ASSERT(index >= 2); - index -= 2; - u64 segment_offset = in[index] | in[index + 1] << 8; - u64 segment_size = ((segment_offset >> 12) & 0xF) + 3; - segment_offset &= 0xFFF; - segment_offset += 3; - - if (out_index < segment_size) - segment_size = out_index; - - ASSERT(out_index >= segment_size); - - out_index -= segment_size; - - for (size_t j = 0; j < segment_size; ++j) { - ASSERT(out_index + j + segment_offset < out.size()); - out[out_index + j] = out[out_index + j + segment_offset]; - } - } else { - ASSERT(out_index >= 1); - --out_index; - --index; - out[out_index] = in[index]; - } - - control <<= 1; - if (out_index == 0) - return out; - } - } - - return out; -} - static u8 CalculateMaxKeyblobSourceHash() { for (s8 i = 0x1F; i >= 0; --i) { if (keyblob_source_hashes[i] != SHA256Hash{}) @@ -478,37 +391,22 @@ void PartitionDataManager::DecryptPackage2(const std::array<Key128, 0x20>& packa cipher.SetIV({header.section_ctr[1].begin(), header.section_ctr[1].end()}); cipher.Transcode(c.data(), c.size(), c.data(), Op::Decrypt); - INIHeader ini; - std::memcpy(&ini, c.data(), sizeof(INIHeader)); - if (ini.magic != Common::MakeMagic('I', 'N', 'I', '1')) + const auto ini_file = std::make_shared<FileSys::VectorVfsFile>(c); + const FileSys::INI ini{ini_file}; + if (ini.GetStatus() != Loader::ResultStatus::Success) return; - u64 offset = sizeof(INIHeader); - for (size_t i = 0; i < ini.process_count; ++i) { - KIPHeader kip; - std::memcpy(&kip, c.data() + offset, sizeof(KIPHeader)); - if (kip.magic != Common::MakeMagic('K', 'I', 'P', '1')) + for (const auto& kip : ini.GetKIPs()) { + if (kip.GetStatus() != Loader::ResultStatus::Success) return; - const auto name = - Common::StringFromFixedZeroTerminatedBuffer(kip.name.data(), kip.name.size()); - - if (name != "FS" && name != "spl") { - offset += sizeof(KIPHeader) + kip.sections[0].size_compressed + - kip.sections[1].size_compressed + kip.sections[2].size_compressed; + if (kip.GetName() != "FS" && kip.GetName() != "spl") { continue; } - const u64 initial_offset = sizeof(KIPHeader) + offset; - const auto text_begin = c.cbegin() + initial_offset; - const auto text_end = text_begin + kip.sections[0].size_compressed; - const std::vector<u8> text = DecompressBLZ({text_begin, text_end}); - - const auto rodata_end = text_end + kip.sections[1].size_compressed; - const std::vector<u8> rodata = DecompressBLZ({text_end, rodata_end}); - - const auto data_end = rodata_end + kip.sections[2].size_compressed; - const std::vector<u8> data = DecompressBLZ({rodata_end, data_end}); + const auto& text = kip.GetTextSection(); + const auto& rodata = kip.GetRODataSection(); + const auto& data = kip.GetDataSection(); std::vector<u8> out; out.reserve(text.size() + rodata.size() + data.size()); @@ -516,12 +414,9 @@ void PartitionDataManager::DecryptPackage2(const std::array<Key128, 0x20>& packa out.insert(out.end(), rodata.begin(), rodata.end()); out.insert(out.end(), data.begin(), data.end()); - offset += sizeof(KIPHeader) + kip.sections[0].size_compressed + - kip.sections[1].size_compressed + kip.sections[2].size_compressed; - - if (name == "FS") + if (kip.GetName() == "FS") package2_fs[static_cast<size_t>(type)] = std::move(out); - else if (name == "spl") + else if (kip.GetName() == "spl") package2_spl[static_cast<size_t>(type)] = std::move(out); } } |