mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-10-30 15:31:46 +00:00
251 lines
8.2 KiB
C
251 lines
8.2 KiB
C
/*
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* bfttf.c
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*
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* Copyright (c) 2018, simontime.
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* Copyright (c) 2020-2022, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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*
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* nxdumptool is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nxdumptool is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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 <https://www.gnu.org/licenses/>.
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*/
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#include "nxdt_utils.h"
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#include "bfttf.h"
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#include "romfs.h"
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#include "title.h"
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/* Type definitions. */
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typedef struct {
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u64 title_id; ///< System title ID.
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char path[64]; ///< Path to BFTTF file inside the RomFS section from the system title.
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u32 size;
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u8 *data;
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} BfttfFontInfo;
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/* Global variables. */
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static Mutex g_bfttfMutex = 0;
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static bool g_bfttfInterfaceInit = false;
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static BfttfFontInfo g_fontInfo[] = {
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{ 0x0100000000000811, "/nintendo_udsg-r_std_003.bfttf", 0, NULL }, /* FontStandard. */
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{ 0x0100000000000810, "/nintendo_ext_003.bfttf", 0, NULL }, /* FontNintendoExtension. There's a secondary entry at "/nintendo_ext2_003.bfttf", but it's identical to this one. */
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{ 0x0100000000000812, "/nintendo_udsg-r_ko_003.bfttf", 0, NULL }, /* FontKorean. */
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{ 0x0100000000000814, "/nintendo_udsg-r_org_zh-cn_003.bfttf", 0, NULL }, /* FontChineseSimplified (1). */
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{ 0x0100000000000814, "/nintendo_udsg-r_ext_zh-cn_003.bfttf", 0, NULL }, /* FontChineseSimplified (2). */
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{ 0x0100000000000813, "/nintendo_udjxh-db_zh-tw_003.bfttf", 0, NULL } /* FontChineseTraditional. */
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};
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static const u32 g_fontInfoCount = MAX_ELEMENTS(g_fontInfo);
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static const u32 g_bfttfKey = 0x06186249;
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/* Function prototypes. */
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static bool bfttfDecodeFont(BfttfFontInfo *font_info);
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bool bfttfInitialize(void)
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{
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NcaContext *nca_ctx = NULL;
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RomFileSystemContext romfs_ctx = {0};
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bool ret = false;
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SCOPED_LOCK(&g_bfttfMutex)
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{
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ret = g_bfttfInterfaceInit;
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if (ret) break;
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u32 count = 0;
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u64 prev_title_id = 0;
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/* Allocate memory for a temporary NCA context. */
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nca_ctx = calloc(1, sizeof(NcaContext));
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if (!nca_ctx)
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{
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LOG_MSG("Failed to allocate memory for temporary NCA context!");
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break;
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}
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/* Retrieve BFTTF data. */
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for(u32 i = 0; i < g_fontInfoCount; i++)
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{
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BfttfFontInfo *font_info = &(g_fontInfo[i]);
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TitleInfo *title_info = NULL;
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RomFileSystemFileEntry *romfs_file_entry = NULL;
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/* Check if the title ID for the current font container matches the one from the previous font container. */
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/* We won't have to reinitialize both NCA and RomFS contexts if that's the case. */
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if (font_info->title_id != prev_title_id)
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{
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/* Get title info. */
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if (!(title_info = titleGetInfoFromStorageByTitleId(NcmStorageId_BuiltInSystem, font_info->title_id)))
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{
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LOG_MSG("Failed to get title info for %016lX!", font_info->title_id);
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continue;
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}
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/* Initialize NCA context. */
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/* NCA contexts don't need to be freed beforehand. */
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bool nca_ctx_init = ncaInitializeContext(nca_ctx, NcmStorageId_BuiltInSystem, 0, titleGetContentInfoByTypeAndIdOffset(title_info, NcmContentType_Data, 0), \
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title_info->version.value, NULL);
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/* Free title info. */
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titleFreeTitleInfo(&title_info);
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/* Check if NCA context initialization succeeded. */
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if (!nca_ctx_init)
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{
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LOG_MSG("Failed to initialize Data NCA context for %016lX!", font_info->title_id);
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continue;
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}
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/* Initialize RomFS context. */
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/* This will also free a previous RomFS context, if available. */
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if (!romfsInitializeContext(&romfs_ctx, &(nca_ctx->fs_ctx[0]), NULL))
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{
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LOG_MSG("Failed to initialize RomFS context for Data NCA from %016lX!", font_info->title_id);
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continue;
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}
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/* Update previous title ID. */
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prev_title_id = font_info->title_id;
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}
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/* Get RomFS file entry. */
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if (!(romfs_file_entry = romfsGetFileEntryByPath(&romfs_ctx, font_info->path)))
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{
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LOG_MSG("Failed to retrieve RomFS file entry in %016lX!", font_info->title_id);
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continue;
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}
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/* Check file size. */
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if (!romfs_file_entry->size)
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{
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LOG_MSG("File size for \"%s\" in %016lX is zero!", font_info->path, font_info->title_id);
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continue;
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}
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/* Allocate memory for BFTTF data. */
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if (!(font_info->data = malloc(romfs_file_entry->size)))
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{
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LOG_MSG("Failed to allocate 0x%lX bytes for \"%s\" in %016lX!", romfs_file_entry->size, font_info->path, font_info->title_id);
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continue;
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}
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/* Read BFTFF data. */
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if (!romfsReadFileEntryData(&romfs_ctx, romfs_file_entry, font_info->data, romfs_file_entry->size, 0))
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{
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LOG_MSG("Failed to read 0x%lX bytes long \"%s\" in %016lX!", romfs_file_entry->size, font_info->path, font_info->title_id);
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free(font_info->data);
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font_info->data = NULL;
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continue;
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}
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/* Update BFTTF size. */
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font_info->size = (u32)romfs_file_entry->size;
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/* Decode BFTTF data. */
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if (!bfttfDecodeFont(font_info))
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{
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LOG_MSG("Failed to decode 0x%lX bytes long \"%s\" in %016lX!", romfs_file_entry->size, font_info->path, font_info->title_id);
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free(font_info->data);
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font_info->data = NULL;
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font_info->size = 0;
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continue;
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}
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/* Increase retrieved BFTTF count. */
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count++;
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}
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/* Update flags. */
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ret = g_bfttfInterfaceInit = (count > 0);
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if (!ret) LOG_MSG("No BFTTF fonts retrieved!");
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}
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romfsFreeContext(&romfs_ctx);
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if (nca_ctx) free(nca_ctx);
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return ret;
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}
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void bfttfExit(void)
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{
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SCOPED_LOCK(&g_bfttfMutex)
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{
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/* Free BFTTF data. */
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for(u32 i = 0; i < g_fontInfoCount; i++)
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{
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BfttfFontInfo *font_info = &(g_fontInfo[i]);
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font_info->size = 0;
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if (font_info->data)
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{
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free(font_info->data);
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font_info->data = NULL;
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}
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}
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g_bfttfInterfaceInit = false;
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}
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}
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bool bfttfGetFontByType(BfttfFontData *font_data, u8 font_type)
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{
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if (!font_data || font_type >= BfttfFontType_Total)
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{
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LOG_MSG("Invalid parameters!");
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return false;
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}
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bool ret = false;
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SCOPED_LOCK(&g_bfttfMutex)
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{
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BfttfFontInfo *font_info = &(g_fontInfo[font_type]);
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if (font_info->size <= 8 || !font_info->data)
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{
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LOG_MSG("BFTTF font data unavailable for type 0x%02X!", font_type);
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break;
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}
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font_data->type = font_type;
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font_data->size = (font_info->size - 8);
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font_data->address = (font_info->data + 8);
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ret = true;
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}
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return ret;
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}
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static bool bfttfDecodeFont(BfttfFontInfo *font_info)
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{
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if (!font_info || font_info->size <= 8 || !IS_ALIGNED(font_info->size, 4) || !font_info->data)
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{
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LOG_MSG("Invalid parameters!");
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return false;
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}
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for(u32 i = 8; i < font_info->size; i += 4)
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{
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u32 *ptr = (u32*)(font_info->data + i);
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*ptr = (*ptr ^ g_bfttfKey);
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}
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return true;
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}
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