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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Common/NandPaths.h"
#include <algorithm>
#include <string>
#include <vector>
#include <fmt/format.h>
#include <fmt/ranges.h>
#include "Common/CommonTypes.h"
#include "Common/Contains.h"
#include "Common/FileUtil.h"
#include "Common/StringUtil.h"
namespace Common
{
std::string RootUserPath(FromWhichRoot from)
{
int idx{};
switch (from)
{
case FromWhichRoot::Configured:
idx = D_WIIROOT_IDX;
break;
case FromWhichRoot::Session:
idx = D_SESSION_WIIROOT_IDX;
break;
case FromWhichRoot::Banners:
idx = D_BANNERS_WIIROOT_IDX;
break;
}
std::string dir = File::GetUserPath(idx);
dir.pop_back(); // remove trailing path separator
return dir;
}
static std::string RootUserPath(std::optional<FromWhichRoot> from)
{
return from ? RootUserPath(*from) : "";
}
std::string GetImportTitlePath(u64 title_id, std::optional<FromWhichRoot> from)
{
return RootUserPath(from) + fmt::format("/import/{:08x}/{:08x}", static_cast<u32>(title_id >> 32),
static_cast<u32>(title_id));
}
std::string GetTicketFileName(u64 title_id, std::optional<FromWhichRoot> from)
{
return fmt::format("{}/ticket/{:08x}/{:08x}.tik", RootUserPath(from),
static_cast<u32>(title_id >> 32), static_cast<u32>(title_id));
}
std::string GetV1TicketFileName(u64 title_id, std::optional<FromWhichRoot> from)
{
return fmt::format("{}/ticket/{:08x}/{:08x}.tv1", RootUserPath(from),
static_cast<u32>(title_id >> 32), static_cast<u32>(title_id));
}
std::string GetTitlePath(u64 title_id, std::optional<FromWhichRoot> from)
{
return fmt::format("{}/title/{:08x}/{:08x}", RootUserPath(from), static_cast<u32>(title_id >> 32),
static_cast<u32>(title_id));
}
std::string GetTitleDataPath(u64 title_id, std::optional<FromWhichRoot> from)
{
return GetTitlePath(title_id, from) + "/data";
}
std::string GetTitleContentPath(u64 title_id, std::optional<FromWhichRoot> from)
{
return GetTitlePath(title_id, from) + "/content";
}
std::string GetTMDFileName(u64 title_id, std::optional<FromWhichRoot> from)
{
return GetTitleContentPath(title_id, from) + "/title.tmd";
}
std::string GetMiiDatabasePath(std::optional<FromWhichRoot> from)
{
return fmt::format("{}/shared2/menu/FaceLib/RFL_DB.dat", RootUserPath(from));
}
bool IsTitlePath(const std::string& path, std::optional<FromWhichRoot> from, u64* title_id)
{
std::string expected_prefix = RootUserPath(from) + "/title/";
if (!path.starts_with(expected_prefix))
{
return false;
}
// Try to find a title ID in the remaining path.
std::string subdirectory = path.substr(expected_prefix.size());
std::vector<std::string> components = SplitString(subdirectory, '/');
if (components.size() < 2)
{
return false;
}
u32 title_id_high, title_id_low;
if (Common::FromChars(components[0], title_id_high, 16).ec != std::errc{} ||
Common::FromChars(components[1], title_id_low, 16).ec != std::errc{})
{
return false;
}
if (title_id != nullptr)
{
*title_id = (static_cast<u64>(title_id_high) << 32) | title_id_low;
}
return true;
}
static bool IsIllegalCharacter(char c)
{
static constexpr char illegal_chars[] = {'\"', '*', '/', ':', '<', '>', '?', '\\', '|', '\x7f'};
return static_cast<unsigned char>(c) <= 0x1F || Common::Contains(illegal_chars, c);
}
std::string EscapeFileName(const std::string& filename)
{
// Prevent paths from containing special names like ., .., ..., ...., and so on
if (std::ranges::all_of(filename, [](char c) { return c == '.'; }))
return ReplaceAll(filename, ".", "__2e__");
// Escape all double underscores since we will use double underscores for our escape sequences
std::string filename_with_escaped_double_underscores = ReplaceAll(filename, "__", "__5f____5f__");
// Escape all other characters that need to be escaped
std::string result;
result.reserve(filename_with_escaped_double_underscores.size());
for (char c : filename_with_escaped_double_underscores)
{
if (IsIllegalCharacter(c))
result.append(fmt::format("__{:02x}__", c));
else
result.push_back(c);
}
return result;
}
std::string EscapePath(const std::string& path)
{
const std::vector<std::string> split_strings = SplitString(path, '/');
std::vector<std::string> escaped_split_strings;
escaped_split_strings.reserve(split_strings.size());
for (const std::string& split_string : split_strings)
escaped_split_strings.push_back(EscapeFileName(split_string));
return fmt::to_string(fmt::join(escaped_split_strings, "/"));
}
std::string UnescapeFileName(const std::string& filename)
{
std::string result = filename;
size_t pos = 0;
// Replace escape sequences of the format "__3f__" with the ASCII
// character defined by the escape sequence's two hex digits.
while ((pos = result.find("__", pos)) != std::string::npos)
{
u32 character;
if (pos + 6 <= result.size() && result[pos + 4] == '_' && result[pos + 5] == '_')
if (Common::FromChars(std::string_view{result}.substr(pos + 2, 2), character, 16).ec ==
std::errc{})
{
result.replace(pos, 6, {static_cast<char>(character)});
}
++pos;
}
return result;
}
bool IsFileNameSafe(const std::string_view filename)
{
return !filename.empty() && !std::ranges::all_of(filename, [](char c) { return c == '.'; }) &&
std::ranges::none_of(filename, IsIllegalCharacter);
}
} // namespace Common
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