Merge pull request #1424 from DarkLordZach/ips-witch
ips_layer: Add support for IPSwitch executable patches
This commit is contained in:
commit
6b48ba5271
6 changed files with 322 additions and 22 deletions
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@ -18,6 +18,25 @@ u8 ToHexNibble(char c1) {
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return 0;
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return 0;
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}
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}
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std::vector<u8> HexStringToVector(std::string_view str, bool little_endian) {
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std::vector<u8> out(str.size() / 2);
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if (little_endian) {
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for (std::size_t i = str.size() - 2; i <= str.size(); i -= 2)
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out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
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} else {
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for (std::size_t i = 0; i < str.size(); i += 2)
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out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
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}
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return out;
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}
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std::string HexVectorToString(const std::vector<u8>& vector, bool upper) {
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std::string out;
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for (u8 c : vector)
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out += fmt::format(upper ? "{:02X}" : "{:02x}", c);
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return out;
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}
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std::array<u8, 16> operator""_array16(const char* str, std::size_t len) {
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std::array<u8, 16> operator""_array16(const char* str, std::size_t len) {
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if (len != 32) {
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if (len != 32) {
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LOG_ERROR(Common,
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LOG_ERROR(Common,
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@ -7,6 +7,7 @@
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#include <array>
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#include <array>
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#include <cstddef>
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#include <cstddef>
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#include <string>
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#include <string>
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#include <vector>
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#include <fmt/format.h>
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#include <fmt/format.h>
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#include "common/common_types.h"
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#include "common/common_types.h"
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@ -14,6 +15,8 @@ namespace Common {
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u8 ToHexNibble(char c1);
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u8 ToHexNibble(char c1);
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std::vector<u8> HexStringToVector(std::string_view str, bool little_endian);
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template <std::size_t Size, bool le = false>
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template <std::size_t Size, bool le = false>
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std::array<u8, Size> HexStringToArray(std::string_view str) {
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std::array<u8, Size> HexStringToArray(std::string_view str) {
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std::array<u8, Size> out{};
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std::array<u8, Size> out{};
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@ -27,6 +30,8 @@ std::array<u8, Size> HexStringToArray(std::string_view str) {
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return out;
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return out;
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}
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}
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std::string HexVectorToString(const std::vector<u8>& vector, bool upper = true);
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template <std::size_t Size>
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template <std::size_t Size>
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std::string HexArrayToString(std::array<u8, Size> array, bool upper = true) {
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std::string HexArrayToString(std::array<u8, Size> array, bool upper = true) {
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std::string out;
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std::string out;
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@ -2,7 +2,9 @@
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// Licensed under GPLv2 or any later version
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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// Refer to the license.txt file included.
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#include <sstream>
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#include "common/assert.h"
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#include "common/assert.h"
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#include "common/hex_util.h"
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#include "common/swap.h"
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#include "common/swap.h"
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#include "core/file_sys/ips_layer.h"
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#include "core/file_sys/ips_layer.h"
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#include "core/file_sys/vfs_vector.h"
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#include "core/file_sys/vfs_vector.h"
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@ -15,6 +17,12 @@ enum class IPSFileType {
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Error,
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Error,
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};
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};
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constexpr std::array<std::pair<const char*, const char*>, 11> ESCAPE_CHARACTER_MAP{
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std::pair{"\\a", "\a"}, {"\\b", "\b"}, {"\\f", "\f"}, {"\\n", "\n"},
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{"\\r", "\r"}, {"\\t", "\t"}, {"\\v", "\v"}, {"\\\\", "\\"},
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{"\\\'", "\'"}, {"\\\"", "\""}, {"\\\?", "\?"},
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};
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static IPSFileType IdentifyMagic(const std::vector<u8>& magic) {
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static IPSFileType IdentifyMagic(const std::vector<u8>& magic) {
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if (magic.size() != 5)
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if (magic.size() != 5)
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return IPSFileType::Error;
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return IPSFileType::Error;
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@ -85,4 +93,205 @@ VirtualFile PatchIPS(const VirtualFile& in, const VirtualFile& ips) {
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return std::make_shared<VectorVfsFile>(in_data, in->GetName(), in->GetContainingDirectory());
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return std::make_shared<VectorVfsFile>(in_data, in->GetName(), in->GetContainingDirectory());
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}
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}
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IPSwitchCompiler::IPSwitchCompiler(VirtualFile patch_text_) : patch_text(std::move(patch_text_)) {
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Parse();
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}
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IPSwitchCompiler::~IPSwitchCompiler() = default;
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std::array<u8, 32> IPSwitchCompiler::GetBuildID() const {
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return nso_build_id;
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}
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bool IPSwitchCompiler::IsValid() const {
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return valid;
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}
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static bool StartsWith(std::string_view base, std::string_view check) {
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return base.size() >= check.size() && base.substr(0, check.size()) == check;
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}
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static std::string EscapeStringSequences(std::string in) {
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for (const auto& seq : ESCAPE_CHARACTER_MAP) {
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for (auto index = in.find(seq.first); index != std::string::npos;
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index = in.find(seq.first, index)) {
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in.replace(index, std::strlen(seq.first), seq.second);
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index += std::strlen(seq.second);
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}
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}
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return in;
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}
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void IPSwitchCompiler::ParseFlag(const std::string& line) {
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if (StartsWith(line, "@flag offset_shift ")) {
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// Offset Shift Flag
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offset_shift = std::stoll(line.substr(19), nullptr, 0);
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} else if (StartsWith(line, "@little-endian")) {
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// Set values to read as little endian
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is_little_endian = true;
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} else if (StartsWith(line, "@big-endian")) {
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// Set values to read as big endian
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is_little_endian = false;
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} else if (StartsWith(line, "@flag print_values")) {
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// Force printing of applied values
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print_values = true;
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}
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}
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void IPSwitchCompiler::Parse() {
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const auto bytes = patch_text->ReadAllBytes();
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std::stringstream s;
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s.write(reinterpret_cast<const char*>(bytes.data()), bytes.size());
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std::vector<std::string> lines;
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std::string stream_line;
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while (std::getline(s, stream_line)) {
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// Remove a trailing \r
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if (!stream_line.empty() && stream_line.back() == '\r')
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stream_line.pop_back();
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lines.push_back(std::move(stream_line));
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}
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for (std::size_t i = 0; i < lines.size(); ++i) {
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auto line = lines[i];
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// Remove midline comments
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std::size_t comment_index = std::string::npos;
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bool within_string = false;
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for (std::size_t k = 0; k < line.size(); ++k) {
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if (line[k] == '\"' && (k > 0 && line[k - 1] != '\\')) {
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within_string = !within_string;
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} else if (line[k] == '\\' && (k < line.size() - 1 && line[k + 1] == '\\')) {
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comment_index = k;
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break;
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}
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}
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if (!StartsWith(line, "//") && comment_index != std::string::npos) {
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last_comment = line.substr(comment_index + 2);
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line = line.substr(0, comment_index);
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}
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if (StartsWith(line, "@stop")) {
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// Force stop
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break;
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} else if (StartsWith(line, "@nsobid-")) {
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// NSO Build ID Specifier
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auto raw_build_id = line.substr(8);
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if (raw_build_id.size() != 0x40)
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raw_build_id.resize(0x40, '0');
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nso_build_id = Common::HexStringToArray<0x20>(raw_build_id);
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} else if (StartsWith(line, "#")) {
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// Mandatory Comment
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LOG_INFO(Loader, "[IPSwitchCompiler ('{}')] Forced output comment: {}",
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patch_text->GetName(), line.substr(1));
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} else if (StartsWith(line, "//")) {
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// Normal Comment
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last_comment = line.substr(2);
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if (last_comment.find_first_not_of(' ') == std::string::npos)
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continue;
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if (last_comment.find_first_not_of(' ') != 0)
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last_comment = last_comment.substr(last_comment.find_first_not_of(' '));
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} else if (StartsWith(line, "@enabled") || StartsWith(line, "@disabled")) {
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// Start of patch
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const auto enabled = StartsWith(line, "@enabled");
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if (i == 0)
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return;
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LOG_INFO(Loader, "[IPSwitchCompiler ('{}')] Parsing patch '{}' ({})",
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patch_text->GetName(), last_comment, line.substr(1));
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IPSwitchPatch patch{last_comment, enabled, {}};
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// Read rest of patch
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while (true) {
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if (i + 1 >= lines.size())
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break;
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const auto patch_line = lines[++i];
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// Start of new patch
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if (StartsWith(patch_line, "@enabled") || StartsWith(patch_line, "@disabled")) {
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--i;
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break;
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}
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// Check for a flag
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if (StartsWith(patch_line, "@")) {
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ParseFlag(patch_line);
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continue;
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}
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// 11 - 8 hex digit offset + space + minimum two digit overwrite val
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if (patch_line.length() < 11)
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break;
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auto offset = std::stoul(patch_line.substr(0, 8), nullptr, 16);
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offset += offset_shift;
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std::vector<u8> replace;
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// 9 - first char of replacement val
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if (patch_line[9] == '\"') {
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// string replacement
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auto end_index = patch_line.find('\"', 10);
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if (end_index == std::string::npos || end_index < 10)
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return;
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while (patch_line[end_index - 1] == '\\') {
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end_index = patch_line.find('\"', end_index + 1);
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if (end_index == std::string::npos || end_index < 10)
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return;
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}
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auto value = patch_line.substr(10, end_index - 10);
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value = EscapeStringSequences(value);
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replace.reserve(value.size());
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std::copy(value.begin(), value.end(), std::back_inserter(replace));
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} else {
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// hex replacement
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const auto value = patch_line.substr(9);
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replace.reserve(value.size() / 2);
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replace = Common::HexStringToVector(value, is_little_endian);
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}
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if (print_values) {
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LOG_INFO(Loader,
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"[IPSwitchCompiler ('{}')] - Patching value at offset 0x{:08X} "
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"with byte string '{}'",
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patch_text->GetName(), offset, Common::HexVectorToString(replace));
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}
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patch.records.insert_or_assign(offset, std::move(replace));
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}
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patches.push_back(std::move(patch));
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} else if (StartsWith(line, "@")) {
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ParseFlag(line);
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}
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}
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valid = true;
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}
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VirtualFile IPSwitchCompiler::Apply(const VirtualFile& in) const {
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if (in == nullptr || !valid)
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return nullptr;
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auto in_data = in->ReadAllBytes();
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for (const auto& patch : patches) {
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if (!patch.enabled)
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continue;
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for (const auto& record : patch.records) {
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if (record.first >= in_data.size())
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continue;
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auto replace_size = record.second.size();
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if (record.first + replace_size > in_data.size())
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replace_size = in_data.size() - record.first;
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for (std::size_t i = 0; i < replace_size; ++i)
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in_data[i + record.first] = record.second[i];
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}
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}
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return std::make_shared<VectorVfsFile>(in_data, in->GetName(), in->GetContainingDirectory());
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}
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} // namespace FileSys
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} // namespace FileSys
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@ -12,4 +12,34 @@ namespace FileSys {
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VirtualFile PatchIPS(const VirtualFile& in, const VirtualFile& ips);
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VirtualFile PatchIPS(const VirtualFile& in, const VirtualFile& ips);
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class IPSwitchCompiler {
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public:
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explicit IPSwitchCompiler(VirtualFile patch_text);
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~IPSwitchCompiler();
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std::array<u8, 0x20> GetBuildID() const;
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bool IsValid() const;
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VirtualFile Apply(const VirtualFile& in) const;
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private:
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void ParseFlag(const std::string& flag);
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void Parse();
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bool valid = false;
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struct IPSwitchPatch {
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std::string name;
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bool enabled;
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std::map<u32, std::vector<u8>> records;
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};
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VirtualFile patch_text;
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std::vector<IPSwitchPatch> patches;
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std::array<u8, 0x20> nso_build_id{};
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bool is_little_endian = false;
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s64 offset_shift = 0;
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bool print_values = false;
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std::string last_comment = "";
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};
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} // namespace FileSys
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} // namespace FileSys
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@ -73,27 +73,38 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
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return exefs;
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return exefs;
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}
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}
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static std::vector<VirtualFile> CollectIPSPatches(const std::vector<VirtualDir>& patch_dirs,
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static std::vector<VirtualFile> CollectPatches(const std::vector<VirtualDir>& patch_dirs,
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const std::string& build_id) {
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const std::string& build_id) {
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std::vector<VirtualFile> ips;
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std::vector<VirtualFile> out;
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ips.reserve(patch_dirs.size());
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out.reserve(patch_dirs.size());
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for (const auto& subdir : patch_dirs) {
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for (const auto& subdir : patch_dirs) {
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auto exefs_dir = subdir->GetSubdirectory("exefs");
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auto exefs_dir = subdir->GetSubdirectory("exefs");
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if (exefs_dir != nullptr) {
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if (exefs_dir != nullptr) {
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for (const auto& file : exefs_dir->GetFiles()) {
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for (const auto& file : exefs_dir->GetFiles()) {
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if (file->GetExtension() != "ips")
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if (file->GetExtension() == "ips") {
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continue;
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auto name = file->GetName();
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auto name = file->GetName();
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const auto p1 = name.substr(0, name.find('.'));
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const auto p1 = name.substr(0, name.find('.'));
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const auto this_build_id = p1.substr(0, p1.find_last_not_of('0') + 1);
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const auto this_build_id = p1.substr(0, p1.find_last_not_of('0') + 1);
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if (build_id == this_build_id)
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if (build_id == this_build_id)
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ips.push_back(file);
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out.push_back(file);
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} else if (file->GetExtension() == "pchtxt") {
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IPSwitchCompiler compiler{file};
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if (!compiler.IsValid())
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continue;
|
||||||
|
|
||||||
|
auto this_build_id = Common::HexArrayToString(compiler.GetBuildID());
|
||||||
|
this_build_id =
|
||||||
|
this_build_id.substr(0, this_build_id.find_last_not_of('0') + 1);
|
||||||
|
|
||||||
|
if (build_id == this_build_id)
|
||||||
|
out.push_back(file);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
return ips;
|
return out;
|
||||||
}
|
}
|
||||||
|
|
||||||
std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso) const {
|
std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso) const {
|
||||||
|
@ -115,15 +126,24 @@ std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso) const {
|
||||||
auto patch_dirs = load_dir->GetSubdirectories();
|
auto patch_dirs = load_dir->GetSubdirectories();
|
||||||
std::sort(patch_dirs.begin(), patch_dirs.end(),
|
std::sort(patch_dirs.begin(), patch_dirs.end(),
|
||||||
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
|
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
|
||||||
const auto ips = CollectIPSPatches(patch_dirs, build_id);
|
const auto patches = CollectPatches(patch_dirs, build_id);
|
||||||
|
|
||||||
auto out = nso;
|
auto out = nso;
|
||||||
for (const auto& ips_file : ips) {
|
for (const auto& patch_file : patches) {
|
||||||
LOG_INFO(Loader, " - Appling IPS patch from mod \"{}\"",
|
if (patch_file->GetExtension() == "ips") {
|
||||||
ips_file->GetContainingDirectory()->GetParentDirectory()->GetName());
|
LOG_INFO(Loader, " - Applying IPS patch from mod \"{}\"",
|
||||||
const auto patched = PatchIPS(std::make_shared<VectorVfsFile>(out), ips_file);
|
patch_file->GetContainingDirectory()->GetParentDirectory()->GetName());
|
||||||
|
const auto patched = PatchIPS(std::make_shared<VectorVfsFile>(out), patch_file);
|
||||||
if (patched != nullptr)
|
if (patched != nullptr)
|
||||||
out = patched->ReadAllBytes();
|
out = patched->ReadAllBytes();
|
||||||
|
} else if (patch_file->GetExtension() == "pchtxt") {
|
||||||
|
LOG_INFO(Loader, " - Applying IPSwitch patch from mod \"{}\"",
|
||||||
|
patch_file->GetContainingDirectory()->GetParentDirectory()->GetName());
|
||||||
|
const IPSwitchCompiler compiler{patch_file};
|
||||||
|
const auto patched = compiler.Apply(std::make_shared<VectorVfsFile>(out));
|
||||||
|
if (patched != nullptr)
|
||||||
|
out = patched->ReadAllBytes();
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if (out.size() < 0x100)
|
if (out.size() < 0x100)
|
||||||
|
@ -143,7 +163,7 @@ bool PatchManager::HasNSOPatch(const std::array<u8, 32>& build_id_) const {
|
||||||
std::sort(patch_dirs.begin(), patch_dirs.end(),
|
std::sort(patch_dirs.begin(), patch_dirs.end(),
|
||||||
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
|
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
|
||||||
|
|
||||||
return !CollectIPSPatches(patch_dirs, build_id).empty();
|
return !CollectPatches(patch_dirs, build_id).empty();
|
||||||
}
|
}
|
||||||
|
|
||||||
static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
|
static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
|
||||||
|
@ -263,8 +283,24 @@ std::map<std::string, std::string, std::less<>> PatchManager::GetPatchVersionNam
|
||||||
if (mod_dir != nullptr && mod_dir->GetSize() > 0) {
|
if (mod_dir != nullptr && mod_dir->GetSize() > 0) {
|
||||||
for (const auto& mod : mod_dir->GetSubdirectories()) {
|
for (const auto& mod : mod_dir->GetSubdirectories()) {
|
||||||
std::string types;
|
std::string types;
|
||||||
if (IsDirValidAndNonEmpty(mod->GetSubdirectory("exefs")))
|
|
||||||
|
const auto exefs_dir = mod->GetSubdirectory("exefs");
|
||||||
|
if (IsDirValidAndNonEmpty(exefs_dir)) {
|
||||||
|
bool ips = false;
|
||||||
|
bool ipswitch = false;
|
||||||
|
|
||||||
|
for (const auto& file : exefs_dir->GetFiles()) {
|
||||||
|
if (file->GetExtension() == "ips")
|
||||||
|
ips = true;
|
||||||
|
else if (file->GetExtension() == "pchtxt")
|
||||||
|
ipswitch = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ips)
|
||||||
AppendCommaIfNotEmpty(types, "IPS");
|
AppendCommaIfNotEmpty(types, "IPS");
|
||||||
|
if (ipswitch)
|
||||||
|
AppendCommaIfNotEmpty(types, "IPSwitch");
|
||||||
|
}
|
||||||
if (IsDirValidAndNonEmpty(mod->GetSubdirectory("romfs")))
|
if (IsDirValidAndNonEmpty(mod->GetSubdirectory("romfs")))
|
||||||
AppendCommaIfNotEmpty(types, "LayeredFS");
|
AppendCommaIfNotEmpty(types, "LayeredFS");
|
||||||
|
|
||||||
|
|
|
@ -36,6 +36,7 @@ public:
|
||||||
|
|
||||||
// Currently tracked NSO patches:
|
// Currently tracked NSO patches:
|
||||||
// - IPS
|
// - IPS
|
||||||
|
// - IPSwitch
|
||||||
std::vector<u8> PatchNSO(const std::vector<u8>& nso) const;
|
std::vector<u8> PatchNSO(const std::vector<u8>& nso) const;
|
||||||
|
|
||||||
// Checks to see if PatchNSO() will have any effect given the NSO's build ID.
|
// Checks to see if PatchNSO() will have any effect given the NSO's build ID.
|
||||||
|
|
Loading…
Reference in a new issue