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partition_data_manager: Remove KIP processing and use FileSys 

Previously, this TU contained the necessary headers to parse KIP/INI but now it should just use the FileSys class.
This commit is contained in:
Zach Hilman 2019-06-05 00:19:29 -04:00
parent 421c3e831a
commit 0f37096820
1 changed files with 13 additions and 118 deletions
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131
src/core/crypto/partition_data_manager.cpp
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@ -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);
}
}