mirror of
https://github.com/Atmosphere-NX/Atmosphere
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73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cstring>
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#include <switch.h>
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#include "fs_path_utils.hpp"
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#include "fs_results.hpp"
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Result FsPathUtils::VerifyPath(const char *path, size_t max_path_len, size_t max_name_len) {
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const char *cur = path;
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size_t name_len = 0;
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for (size_t path_len = 0; path_len <= max_path_len && name_len <= max_name_len; path_len++) {
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const char c = *cur;
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/* If terminated, we're done. */
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if (c == 0) {
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return 0;
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}
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/* TODO: Nintendo converts the path from utf-8 to utf-32, one character at a time. */
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/* We should do this. */
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/* Banned characters: :*?<>| */
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if (c == ':' || c == '*' || c == '?' || c == '<' || c == '>' || c == '|') {
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return ResultFsInvalidCharacter;
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}
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name_len++;
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/* Check for separator. */
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if (c == '/' || c == '\\') {
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name_len = 0;
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}
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}
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return ResultFsTooLongPath;
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}
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Result FsPathUtils::ConvertPathForServiceObject(FsPath *out, const char *path) {
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/* Check for nullptr. */
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if (out == nullptr || path == nullptr) {
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return ResultFsInvalidPath;
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}
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/* Copy string, NULL terminate. */
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/* NOTE: Nintendo adds an extra char at 0x301 for NULL terminator */
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/* But then forces 0x300 to NULL anyway... */
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std::strncpy(out->str, path, sizeof(out->str) - 1);
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out->str[sizeof(out->str)-1] = 0;
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/* Replace any instances of \ with / */
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for (size_t i = 0; i < sizeof(out->str); i++) {
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if (out->str[i] == '\\') {
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out->str[i] = '/';
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}
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}
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/* Nintendo allows some liberties if the path is a windows path. Who knows why... */
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const auto prefix_len = FsPathUtils::IsWindowsAbsolutePath(path) ? 2 : 0;
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const size_t max_len = (FS_MAX_PATH-1) - prefix_len;
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return FsPathUtils::VerifyPath(out->str + prefix_len, max_len, max_len);
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}
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