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nxdumptool/source/bktr.c

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/*
* Copyright (c) 2020 DarkMatterCore
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "bktr.h"
#include "utils.h"
/* Function prototypes. */
bool bktrInitializeContext(BktrContext *out, NcaFsSectionContext *base_nca_fs_ctx, NcaFsSectionContext *update_nca_fs_ctx)
{
NcaContext *base_nca_ctx = NULL, *update_nca_ctx = NULL;
if (!out || !base_nca_fs_ctx || !(base_nca_ctx = (NcaContext*)base_nca_fs_ctx->nca_ctx) || base_nca_fs_ctx->section_type != NcaFsSectionType_RomFs || \
base_nca_fs_ctx->encryption_type == NcaEncryptionType_AesCtrEx || !update_nca_fs_ctx || !(update_nca_ctx = (NcaContext*)update_nca_fs_ctx->nca_ctx) || \
update_nca_fs_ctx->section_type != NcaFsSectionType_PatchRomFs || update_nca_fs_ctx->encryption_type != NcaEncryptionType_AesCtrEx ||
base_nca_ctx->header.program_id != update_nca_ctx->header.program_id)
{
LOGFILE("Invalid parameters!");
return false;
}
/* Initialize base NCA RomFS context */
if (!romfsInitializeContext(&(out->base_romfs_ctx), base_nca_fs_ctx))
{
LOGFILE("Failed to initialize base NCA RomFS context!");
return false;
}
/* Initialize update NCA RomFS context */
if (!romfsInitializeContext(&(out->patch_romfs_ctx), update_nca_fs_ctx))
{
LOGFILE("Failed to initialize update NCA RomFS context!");
romfsFreeContext(&(out->base_romfs_ctx));
return false;
}
/* Fill context */
bool success = false;
out->patch_info = &(update_nca_fs_ctx->header->patch_info);
out->size = out->patch_romfs_ctx.size;
out->virtual_seek = out->base_seek = out->patch_seek = 0;
success = true;
exit:
if (!success) bktrFreeContext(out);
return success;
}