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https://github.com/Atmosphere-NX/Atmosphere.git
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81 lines
No EOL
2.3 KiB
C++
81 lines
No EOL
2.3 KiB
C++
/*
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* Copyright (c) 2018-2019 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 <switch.h>
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#include <cstdio>
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#include <algorithm>
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#include <stratosphere.hpp>
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#include "ro_nrr.hpp"
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#include "ro_registration.hpp"
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Result NrrUtils::ValidateNrrSignature(const NrrHeader *header) {
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/* TODO: Implement RSA-2048 PSS..... */
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/* TODO: Check PSS fixed-key signature. */
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if (false) {
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return ResultRoNotAuthorized;
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}
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/* Check TitleID pattern is valid. */
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if ((header->title_id & header->title_id_mask) != header->title_id_pattern) {
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return ResultRoNotAuthorized;
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}
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/* TODO: Check PSS signature over hashes. */
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if (false) {
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return ResultRoNotAuthorized;
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}
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return ResultSuccess;
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}
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Result NrrUtils::ValidateNrr(const NrrHeader *header, u64 size, u64 title_id, RoModuleType expected_type, bool enforce_type) {
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if (header->magic != MagicNrr0) {
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return ResultRoInvalidNrr;
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}
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if (header->nrr_size != size) {
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return ResultRoInvalidSize;
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}
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bool ease_nro_restriction = Registration::ShouldEaseNroRestriction();
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/* Check signature. */
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Result rc = ValidateNrrSignature(header);
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if (R_FAILED(rc)) {
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if (!ease_nro_restriction) {
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return rc;
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}
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}
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/* Check title id. */
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if (title_id != header->title_id) {
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if (!ease_nro_restriction) {
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return ResultRoInvalidNrr;
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}
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}
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/* Check type. */
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if (GetRuntimeFirmwareVersion() >= FirmwareVersion_700) {
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if (!enforce_type || expected_type != static_cast<RoModuleType>(header->nrr_type)) {
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if (!ease_nro_restriction) {
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return ResultRoInvalidNrrType;
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}
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}
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}
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return ResultSuccess;
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} |