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pl_u: Fix mismatched rebase size error in font encryption

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This commit is contained in:
Zach Hilman
2019-09-23 09:52:49 -04:00
parent 36d829c27b
commit 1911f85391
3 changed files with 17 additions and 19 deletions
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18
src/core/hle/service/ns/pl_u.cpp
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@@ -6,13 +6,6 @@
#include <cstring>
#include <vector>
#include <FontChineseSimplified.h>
#include <FontChineseTraditional.h>
#include <FontExtendedChineseSimplified.h>
#include <FontKorean.h>
#include <FontNintendoExtended.h>
#include <FontStandard.h>
#include "common/assert.h"
#include "common/common_paths.h"
#include "common/common_types.h"
@@ -26,6 +19,7 @@
#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/physical_memory.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/ns/pl_u.h"
@@ -95,8 +89,10 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem
offset += transformed_font.size() * sizeof(u32);
}
void EncryptSharedFont(const std::vector<u8>& input, Kernel::PhysicalMemory& output) {
ASSERT_MSG(input.size() * sizeof(u32) < SHARED_FONT_MEM_SIZE, "Shared fonts exceeds 17mb!");
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);
@@ -104,7 +100,9 @@ void EncryptSharedFont(const std::vector<u8>& input, Kernel::PhysicalMemory& out
transformed_font[1] = Common::swap32(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(), transformed_font.data(), transformed_font.size() * sizeof(u32));
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

4
src/core/hle/service/ns/pl_u.h
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@@ -5,7 +5,7 @@
#pragma once
#include <memory>
#include "core/hle/kernel/physical_memory.h"
#include <vector>
#include "core/hle/service/service.h"
namespace Service {
@@ -16,6 +16,8 @@ class FileSystemController;
namespace NS {
void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset);
class PL_U final : public ServiceFramework<PL_U> {
public:
explicit PL_U(Core::System& system);