File_SDMC::File_SDMC(const Archive_SDMC* archive, const Path& path, const Mode mode) {
// TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
// the root directory we set while opening the archive.
// For example, opening /../../etc/passwd can give the emulated program your users list.
this->path = archive->GetMountPoint() + path.AsString();
this->mode.hex = mode.hex;
}
PathParser::PathParser(const Path& path) {
if (path.GetType() != LowPathType::Char && path.GetType() != LowPathType::Wchar) {
is_valid = false;
return;
}
auto path_string = path.AsString();
if (path_string.size() == 0 || path_string[0] != '/') {
is_valid = false;
return;
}
// Filter out invalid characters for the host system.
// Although some of these characters are valid on 3DS, they are unlikely to be used by games.
if (std::find_if(path_string.begin(), path_string.end(), [](char c) {
static const std::set<char> invalid_chars{'<', '>', '\\', '|', ':', '\"', '*', '?'};
return invalid_chars.find(c) != invalid_chars.end();
}) != path_string.end()) {
is_valid = false;
return;
}
Common::SplitString(path_string, '/', path_sequence);
auto begin = path_sequence.begin();
auto end = path_sequence.end();
end = std::remove_if(begin, end, [](std::string& str) { return str == "" || str == "."; });
path_sequence = std::vector<std::string>(begin, end);
// checks if the path is out of bounds.
int level = 0;
for (auto& node : path_sequence) {
if (node == "..") {
--level;
if (level < 0) {
is_valid = false;
return;
}
} else {
++level;
}
}
is_valid = true;
is_root = level == 0;
}
ResultCode SaveDataArchive::CreateDirectory(const Path& path) const {
const PathParser path_parser(path);
if (!path_parser.IsValid()) {
LOG_ERROR(Service_FS, "Invalid path {}", path.DebugStr());
return ERROR_INVALID_PATH;
}
const auto full_path = path_parser.BuildHostPath(mount_point);
switch (path_parser.GetHostStatus(mount_point)) {
case PathParser::InvalidMountPoint:
LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point {}", mount_point);
return ERROR_FILE_NOT_FOUND;
case PathParser::PathNotFound:
LOG_ERROR(Service_FS, "Path not found {}", full_path);
return ERROR_PATH_NOT_FOUND;
case PathParser::FileInPath:
LOG_ERROR(Service_FS, "Unexpected file in path {}", full_path);
return ERROR_UNEXPECTED_FILE_OR_DIRECTORY;
case PathParser::DirectoryFound:
case PathParser::FileFound:
LOG_ERROR(Service_FS, "{} already exists", full_path);
return ERROR_DIRECTORY_ALREADY_EXISTS;
case PathParser::NotFound:
break; // Expected 'success' case
}
if (FileUtil::CreateDir(mount_point + path.AsString())) {
return RESULT_SUCCESS;
}
LOG_CRITICAL(Service_FS, "(unreachable) Unknown error creating {}", mount_point);
return ResultCode(ErrorDescription::NoData, ErrorModule::FS, ErrorSummary::Canceled,
ErrorLevel::Status);
}
/**
* Create a directory specified by its path
* @param path Path relative to the archive
* @return Whether the directory could be created
*/
bool Archive_SDMC::CreateDirectory(const Path& path) const {
return FileUtil::CreateDir(GetMountPoint() + path.AsString());
}
bool DiskArchive::RenameDirectory(const Path& src_path, const Path& dest_path) const {
return FileUtil::Rename(mount_point + src_path.AsString(), mount_point + dest_path.AsString());
}
bool DiskArchive::CreateDirectory(const Path& path) const {
return FileUtil::CreateDir(mount_point + path.AsString());
}
bool DiskArchive::DeleteFile(const Path& path) const {
return FileUtil::Delete(mount_point + path.AsString());
}
DiskDirectory::DiskDirectory(const DiskArchive& archive, const Path& path) : directory() {
// TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
// the root directory we set while opening the archive.
// For example, opening /../../usr/bin can give the emulated program your installed programs.
this->path = archive.mount_point + path.AsString();
}