2020-10-01 07:17:59 +01:00
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/*
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* cnmt.c
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*
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* Copyright (c) 2020, 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 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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* nxdumptool 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 "utils.h"
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#include "cnmt.h"
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#include "title.h"
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#define CNMT_MINIMUM_FILENAME_LENGTH 23 /* Content Meta Type + "_" + Title ID + ".cnmt". */
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2020-10-14 01:15:21 +01:00
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/* Global variables. */
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static const char *g_cnmtAttributeStrings[ContentMetaAttribute_Count] = {
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"IncludesExFatDriver",
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"Rebootless",
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"Compacted"
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};
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2020-10-01 07:17:59 +01:00
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/* Function prototypes. */
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static bool cnmtGetContentMetaTypeAndTitleIdFromFileName(const char *cnmt_filename, size_t cnmt_filename_len, u8 *out_content_meta_type, u64 *out_title_id);
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2020-10-02 10:53:58 +01:00
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static const char *cnmtGetRequiredTitleVersionString(u8 content_meta_type);
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static const char *cnmtGetRequiredTitleTypeString(u8 content_meta_type);
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2020-10-01 07:17:59 +01:00
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bool cnmtInitializeContext(ContentMetaContext *out, NcaContext *nca_ctx)
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{
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if (!out || !nca_ctx || !strlen(nca_ctx->content_id_str) || nca_ctx->content_type != NcmContentType_Meta || nca_ctx->content_size < NCA_FULL_HEADER_LENGTH || \
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(nca_ctx->storage_id != NcmStorageId_GameCard && !nca_ctx->ncm_storage) || (nca_ctx->storage_id == NcmStorageId_GameCard && !nca_ctx->gamecard_offset) || \
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nca_ctx->header.content_type != NcaContentType_Meta || !out)
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{
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LOGFILE("Invalid parameters!");
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return false;
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}
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u32 i = 0, pfs_entry_count = 0;
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size_t cnmt_filename_len = 0;
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u8 content_meta_type = 0;
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u64 title_id = 0, cur_offset = 0;
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bool success = false, invalid_ext_header_size = false, invalid_ext_data_size = false;
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/* Free output context beforehand. */
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cnmtFreeContext(out);
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/* Initialize Partition FS context. */
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2020-10-13 15:00:03 +01:00
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if (!pfsInitializeContext(&(out->pfs_ctx), &(nca_ctx->fs_ctx[0])))
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2020-10-01 07:17:59 +01:00
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{
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LOGFILE("Failed to initialize Partition FS context!");
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goto end;
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}
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2020-10-09 10:58:53 +01:00
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/* Get Partition FS entry count. Edge case, we should never trigger this. */
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2020-10-01 07:17:59 +01:00
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if (!(pfs_entry_count = pfsGetEntryCount(&(out->pfs_ctx))))
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{
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LOGFILE("Partition FS has no file entries!");
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goto end;
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}
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/* Look for the '.cnmt' file entry index. */
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for(i = 0; i < pfs_entry_count; i++)
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{
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if ((out->cnmt_filename = pfsGetEntryNameByIndex(&(out->pfs_ctx), i)) && (cnmt_filename_len = strlen(out->cnmt_filename)) >= CNMT_MINIMUM_FILENAME_LENGTH && \
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!strncasecmp(out->cnmt_filename + cnmt_filename_len - 5, ".cnmt", 5)) break;
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}
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if (i >= pfs_entry_count)
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{
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LOGFILE("'.cnmt' entry unavailable in Partition FS!");
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goto end;
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}
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//LOGFILE("Found '.cnmt' entry \"%s\" in Meta NCA \"%s\".", out->cnmt_filename, nca_ctx->content_id_str);
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/* Retrieve content meta type and title ID from the '.cnmt' filename. */
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if (!cnmtGetContentMetaTypeAndTitleIdFromFileName(out->cnmt_filename, cnmt_filename_len, &content_meta_type, &title_id)) goto end;
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/* Get '.cnmt' file entry. */
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if (!(out->pfs_entry = pfsGetEntryByIndex(&(out->pfs_ctx), i)))
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{
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LOGFILE("Failed to get '.cnmt' entry from Partition FS!");
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goto end;
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}
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/* Check raw CNMT size. */
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if (!out->pfs_entry->size)
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{
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LOGFILE("Invalid raw CNMT size!");
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goto end;
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}
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/* Allocate memory for the raw CNMT data. */
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out->raw_data_size = out->pfs_entry->size;
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2020-10-09 10:58:53 +01:00
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if (!(out->raw_data = malloc(out->raw_data_size)))
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2020-10-01 07:17:59 +01:00
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{
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LOGFILE("Failed to allocate memory for the raw CNMT data!");
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goto end;
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}
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/* Read raw CNMT data into memory buffer. */
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if (!pfsReadEntryData(&(out->pfs_ctx), out->pfs_entry, out->raw_data, out->raw_data_size, 0))
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{
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LOGFILE("Failed to read raw CNMT data!");
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goto end;
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}
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2020-10-02 10:53:58 +01:00
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/* Calculate SHA-256 checksum for the whole raw CNMT. */
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sha256CalculateHash(out->raw_data_hash, out->raw_data, out->raw_data_size);
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2020-10-01 07:17:59 +01:00
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/* Save pointer to NCA context to the output CNMT context. */
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out->nca_ctx = nca_ctx;
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/* Verify packaged header. */
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2020-10-02 11:28:41 +01:00
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out->packaged_header = (ContentMetaPackagedContentMetaHeader*)out->raw_data;
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cur_offset += sizeof(ContentMetaPackagedContentMetaHeader);
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2020-10-01 07:17:59 +01:00
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if (out->packaged_header->title_id != title_id)
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{
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LOGFILE("CNMT title ID mismatch! (%016lX != %016lX).", out->packaged_header->title_id, title_id);
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goto end;
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}
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if (out->packaged_header->content_meta_type != content_meta_type)
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{
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LOGFILE("CNMT content meta type mismatch! (0x%02X != 0x%02X).", out->packaged_header->content_meta_type, content_meta_type);
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goto end;
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}
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2020-10-13 03:46:59 +01:00
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if (!out->packaged_header->content_count && out->packaged_header->content_meta_type != NcmContentMetaType_SystemUpdate)
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2020-10-01 07:17:59 +01:00
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{
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LOGFILE("Invalid content count!");
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goto end;
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}
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if ((out->packaged_header->content_meta_type == NcmContentMetaType_SystemUpdate && !out->packaged_header->content_meta_count) || \
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(out->packaged_header->content_meta_type != NcmContentMetaType_SystemUpdate && out->packaged_header->content_meta_count))
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{
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LOGFILE("Invalid content meta count!");
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goto end;
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}
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2020-10-02 10:53:58 +01:00
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/* Save pointer to extended header. */
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2020-10-01 07:17:59 +01:00
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if (out->packaged_header->extended_header_size)
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{
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out->extended_header = (out->raw_data + cur_offset);
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cur_offset += out->packaged_header->extended_header_size;
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switch(out->packaged_header->content_meta_type)
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{
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case NcmContentMetaType_SystemUpdate:
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invalid_ext_header_size = (out->packaged_header->extended_header_size != (u16)sizeof(ContentMetaSystemUpdateMetaExtendedHeader));
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out->extended_data_size = (!invalid_ext_header_size ? ((ContentMetaSystemUpdateMetaExtendedHeader*)out->extended_header)->extended_data_size : 0);
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invalid_ext_data_size = (out->extended_data_size <= sizeof(ContentMetaSystemUpdateMetaExtendedDataHeader));
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break;
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case NcmContentMetaType_Application:
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invalid_ext_header_size = (out->packaged_header->extended_header_size != (u16)sizeof(ContentMetaApplicationMetaExtendedHeader));
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break;
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case NcmContentMetaType_Patch:
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invalid_ext_header_size = (out->packaged_header->extended_header_size != (u16)sizeof(ContentMetaPatchMetaExtendedHeader));
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out->extended_data_size = (!invalid_ext_header_size ? ((ContentMetaPatchMetaExtendedHeader*)out->extended_header)->extended_data_size : 0);
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invalid_ext_data_size = (out->extended_data_size <= sizeof(ContentMetaPatchMetaExtendedDataHeader));
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break;
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case NcmContentMetaType_AddOnContent:
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invalid_ext_header_size = (out->packaged_header->extended_header_size != (u16)sizeof(ContentMetaAddOnContentMetaExtendedHeader));
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break;
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case NcmContentMetaType_Delta:
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invalid_ext_header_size = (out->packaged_header->extended_header_size != (u16)sizeof(ContentMetaDeltaMetaExtendedHeader));
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out->extended_data_size = (!invalid_ext_header_size ? ((ContentMetaDeltaMetaExtendedHeader*)out->extended_header)->extended_data_size : 0);
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invalid_ext_data_size = (out->extended_data_size <= sizeof(ContentMetaDeltaMetaExtendedDataHeader));
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break;
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default:
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invalid_ext_header_size = (out->packaged_header->extended_header_size > 0);
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break;
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}
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if (invalid_ext_header_size)
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{
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LOGFILE("Invalid extended header size!");
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goto end;
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}
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if (invalid_ext_data_size)
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{
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LOGFILE("Invalid extended data size!");
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goto end;
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}
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}
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/* Save pointer to packaged content infos. */
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2020-10-13 03:46:59 +01:00
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if (out->packaged_header->content_count)
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{
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out->packaged_content_info = (NcmPackagedContentInfo*)(out->raw_data + cur_offset);
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cur_offset += (out->packaged_header->content_count * sizeof(NcmPackagedContentInfo));
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}
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2020-10-01 07:17:59 +01:00
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/* Save pointer to content meta infos. */
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if (out->packaged_header->content_meta_count)
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{
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out->content_meta_info = (NcmContentMetaInfo*)(out->raw_data + cur_offset);
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cur_offset += (out->packaged_header->content_meta_count * sizeof(NcmContentMetaInfo));
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}
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/* Save pointer to the extended data block. */
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if (out->extended_data_size)
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{
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out->extended_data = (out->raw_data + cur_offset);
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cur_offset += out->extended_data_size;
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}
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/* Save pointer to digest. */
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out->digest = (out->raw_data + cur_offset);
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cur_offset += CNMT_DIGEST_SIZE;
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/* Safety check: verify raw CNMT size. */
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if (cur_offset != out->raw_data_size)
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{
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2020-10-10 20:29:14 +01:00
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LOGFILE("Raw CNMT size mismatch! (0x%lX != 0x%lX).", cur_offset, out->raw_data_size);
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2020-10-01 07:17:59 +01:00
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goto end;
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}
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success = true;
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end:
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if (!success) cnmtFreeContext(out);
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return success;
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}
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2020-10-02 10:53:58 +01:00
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bool cnmtGenerateAuthoringToolXml(ContentMetaContext *cnmt_ctx, NcaContext *nca_ctx, u32 nca_ctx_count)
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{
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if (!cnmtIsValidContext(cnmt_ctx) || !nca_ctx || nca_ctx_count != ((u32)cnmt_ctx->packaged_header->content_count + 1))
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{
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LOGFILE("Invalid parameters!");
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return false;
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}
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2020-10-03 18:09:29 +01:00
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u32 i, j;
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2020-10-02 10:53:58 +01:00
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char *xml_buf = NULL;
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u64 xml_buf_size = 0;
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char digest_str[0x41] = {0};
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2020-10-14 01:15:21 +01:00
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u8 count = 0;
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2020-10-02 10:53:58 +01:00
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bool success = false, invalid_nca = false;
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/* Free AuthoringTool-like XML data if needed. */
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if (cnmt_ctx->authoring_tool_xml) free(cnmt_ctx->authoring_tool_xml);
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cnmt_ctx->authoring_tool_xml = NULL;
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cnmt_ctx->authoring_tool_xml_size = 0;
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if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, \
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"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" \
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"<ContentMeta>\n" \
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" <Type>%s</Type>\n" \
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" <Id>0x%016lx</Id>\n" \
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" <Version>%u</Version>\n" \
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2020-10-14 01:15:21 +01:00
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" <ReleaseVersion />\n" \
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" <PrivateVersion />\n",
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2020-10-02 10:53:58 +01:00
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titleGetNcmContentMetaTypeName(cnmt_ctx->packaged_header->content_meta_type), \
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cnmt_ctx->packaged_header->title_id, \
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2020-10-14 01:15:21 +01:00
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cnmt_ctx->packaged_header->version.value)) goto end;
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/* ContentMetaAttribute. */
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for(i = 0; i < ContentMetaAttribute_Count; i++)
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{
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if (!(cnmt_ctx->packaged_header->content_meta_attribute & (u8)BIT(i))) continue;
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if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, " <ContentMetaAttribute>%s</ContentMetaAttribute>\n", g_cnmtAttributeStrings[i])) goto end;
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count++;
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}
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if (!count && !utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, " <ContentMetaAttribute />\n")) goto end;
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if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, " <RequiredDownloadSystemVersion>%u</RequiredDownloadSystemVersion>\n", \
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2020-10-08 19:31:09 +01:00
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cnmt_ctx->packaged_header->required_download_system_version.value)) goto end;
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2020-10-02 10:53:58 +01:00
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for(i = 0; i < nca_ctx_count; i++)
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{
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2020-10-14 19:58:33 +01:00
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NcaContext *cur_nca_ctx = &(nca_ctx[i]);
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2020-10-02 10:53:58 +01:00
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/* Check if this NCA is really referenced by our CNMT. */
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2020-10-14 19:58:33 +01:00
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if (cur_nca_ctx->content_type != NcmContentType_Meta)
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2020-10-02 10:53:58 +01:00
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{
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/* Non-Meta NCAs: check if their content IDs are part of the packaged content info entries from the CNMT. */
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for(j = 0; j < cnmt_ctx->packaged_header->content_count; j++)
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{
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2020-10-14 19:58:33 +01:00
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if (!memcmp(cnmt_ctx->packaged_content_info[j].info.content_id.c, cur_nca_ctx->content_id.c, 0x10)) break;
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2020-10-02 10:53:58 +01:00
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}
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invalid_nca = (j >= cnmt_ctx->packaged_header->content_count);
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} else {
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/* Meta NCAs: quick and dirty pointer comparison because why not. */
|
2020-10-14 19:58:33 +01:00
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|
|
invalid_nca = (cnmt_ctx->nca_ctx != cur_nca_ctx);
|
2020-10-02 10:53:58 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (invalid_nca)
|
|
|
|
{
|
2020-10-14 19:58:33 +01:00
|
|
|
LOGFILE("NCA \"%s\" isn't referenced by this CNMT!", cur_nca_ctx->content_id_str);
|
2020-10-02 10:53:58 +01:00
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, \
|
|
|
|
" <Content>\n" \
|
|
|
|
" <Type>%s</Type>\n" \
|
|
|
|
" <Id>%s</Id>\n" \
|
|
|
|
" <Size>%lu</Size>\n" \
|
|
|
|
" <Hash>%s</Hash>\n" \
|
|
|
|
" <KeyGeneration>%u</KeyGeneration>\n" \
|
|
|
|
" <IdOffset>%u</IdOffset>\n" \
|
|
|
|
" </Content>\n", \
|
2020-10-14 19:58:33 +01:00
|
|
|
titleGetNcmContentTypeName(cur_nca_ctx->content_type), \
|
|
|
|
cur_nca_ctx->content_id_str, \
|
|
|
|
cur_nca_ctx->content_size, \
|
|
|
|
cur_nca_ctx->hash_str, \
|
|
|
|
cur_nca_ctx->key_generation, \
|
|
|
|
cur_nca_ctx->id_offset)) goto end;
|
2020-10-02 10:53:58 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
utilsGenerateHexStringFromData(digest_str, sizeof(digest_str), cnmt_ctx->digest, CNMT_DIGEST_SIZE);
|
|
|
|
|
|
|
|
if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, \
|
2020-10-14 01:15:21 +01:00
|
|
|
" <ContentMeta />\n" \
|
2020-10-02 10:53:58 +01:00
|
|
|
" <Digest>%s</Digest>\n" \
|
2020-10-14 01:15:21 +01:00
|
|
|
" <KeyGenerationMin>%u</KeyGenerationMin>\n" \
|
|
|
|
" <KeepGeneration />\n" \
|
|
|
|
" <KeepGenerationSpecified />\n", \
|
2020-10-02 10:53:58 +01:00
|
|
|
digest_str, \
|
|
|
|
cnmt_ctx->nca_ctx->key_generation)) goto end;
|
|
|
|
|
|
|
|
if (cnmt_ctx->packaged_header->content_meta_type == NcmContentMetaType_Application || cnmt_ctx->packaged_header->content_meta_type == NcmContentMetaType_Patch || \
|
|
|
|
cnmt_ctx->packaged_header->content_meta_type == NcmContentMetaType_AddOnContent)
|
|
|
|
{
|
2020-10-06 16:41:26 +01:00
|
|
|
u32 required_title_version = cnmtGetRequiredTitleVersion(cnmt_ctx);
|
2020-10-02 10:53:58 +01:00
|
|
|
const char *required_title_version_str = cnmtGetRequiredTitleVersionString(cnmt_ctx->packaged_header->content_meta_type);
|
|
|
|
|
2020-10-06 16:41:26 +01:00
|
|
|
u64 required_title_id = cnmtGetRequiredTitleId(cnmt_ctx);
|
2020-10-02 10:53:58 +01:00
|
|
|
const char *required_title_type_str = cnmtGetRequiredTitleTypeString(cnmt_ctx->packaged_header->content_meta_type);
|
|
|
|
|
|
|
|
if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, \
|
|
|
|
" <%s>%u</%s>\n" \
|
|
|
|
" <%s>0x%016lx</%s>\n", \
|
2020-10-14 01:15:21 +01:00
|
|
|
required_title_version_str, required_title_version, required_title_version_str, \
|
|
|
|
required_title_type_str, required_title_id, required_title_type_str)) goto end;
|
2020-10-02 10:53:58 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (cnmt_ctx->packaged_header->content_meta_type == NcmContentMetaType_Application)
|
|
|
|
{
|
|
|
|
if (!utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, \
|
|
|
|
" <RequiredApplicationVersion>%u</RequiredApplicationVersion>\n", \
|
2020-10-08 19:31:09 +01:00
|
|
|
((VersionType1*)(cnmt_ctx->extended_header + sizeof(u64) + sizeof(u32)))->value)) goto end;
|
2020-10-02 10:53:58 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!(success = utilsAppendFormattedStringToBuffer(&xml_buf, &xml_buf_size, "</ContentMeta>"))) goto end;
|
|
|
|
|
|
|
|
/* Update CNMT context. */
|
|
|
|
cnmt_ctx->authoring_tool_xml = xml_buf;
|
|
|
|
cnmt_ctx->authoring_tool_xml_size = strlen(xml_buf);
|
|
|
|
|
|
|
|
end:
|
|
|
|
if (!success)
|
|
|
|
{
|
|
|
|
if (xml_buf) free(xml_buf);
|
|
|
|
LOGFILE("Failed to generate CNMT AuthoringTool XML!");
|
|
|
|
}
|
|
|
|
|
|
|
|
return success;
|
|
|
|
}
|
|
|
|
|
2020-10-01 07:17:59 +01:00
|
|
|
static bool cnmtGetContentMetaTypeAndTitleIdFromFileName(const char *cnmt_filename, size_t cnmt_filename_len, u8 *out_content_meta_type, u64 *out_title_id)
|
|
|
|
{
|
|
|
|
if (!cnmt_filename || cnmt_filename_len < CNMT_MINIMUM_FILENAME_LENGTH || !out_content_meta_type || !out_title_id)
|
|
|
|
{
|
|
|
|
LOGFILE("Invalid parameters!");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
u8 i = 0;
|
|
|
|
const char *pch1 = NULL, *pch2 = NULL;
|
|
|
|
size_t content_meta_type_str_len = 0;
|
|
|
|
|
|
|
|
pch1 = (const char*)strstr(cnmt_filename, "_");
|
|
|
|
pch2 = (cnmt_filename + cnmt_filename_len - 5);
|
|
|
|
|
|
|
|
if (!pch1 || !(content_meta_type_str_len = (pch1 - cnmt_filename)) || (pch2 - ++pch1) != 16)
|
|
|
|
{
|
|
|
|
LOGFILE("Invalid '.cnmt' filename in Partition FS!");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
for(i = NcmContentMetaType_SystemProgram; i <= NcmContentMetaType_Delta; i++)
|
|
|
|
{
|
|
|
|
if (i > NcmContentMetaType_BootImagePackageSafe && i < NcmContentMetaType_Application)
|
|
|
|
{
|
|
|
|
i = (NcmContentMetaType_Application - 1);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!strncasecmp(cnmt_filename, titleGetNcmContentMetaTypeName(i), content_meta_type_str_len))
|
|
|
|
{
|
|
|
|
*out_content_meta_type = i;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i > NcmContentMetaType_Delta)
|
|
|
|
{
|
|
|
|
LOGFILE("Invalid content meta type \"%.*s\" in '.cnmt' filename!", (int)content_meta_type_str_len, cnmt_filename);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(*out_title_id = strtoull(pch1, NULL, 16)))
|
|
|
|
{
|
|
|
|
LOGFILE("Invalid title ID in '.cnmt' filename!");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
2020-10-02 10:53:58 +01:00
|
|
|
|
|
|
|
static const char *cnmtGetRequiredTitleVersionString(u8 content_meta_type)
|
|
|
|
{
|
|
|
|
const char *str = NULL;
|
|
|
|
|
|
|
|
switch(content_meta_type)
|
|
|
|
{
|
|
|
|
case NcmContentMetaType_Application:
|
|
|
|
case NcmContentMetaType_Patch:
|
|
|
|
str = "RequiredSystemVersion";
|
|
|
|
break;
|
|
|
|
case NcmContentMetaType_AddOnContent:
|
|
|
|
str = "RequiredApplicationVersion";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
str = "Unknown";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return str;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const char *cnmtGetRequiredTitleTypeString(u8 content_meta_type)
|
|
|
|
{
|
|
|
|
const char *str = NULL;
|
|
|
|
|
|
|
|
switch(content_meta_type)
|
|
|
|
{
|
|
|
|
case NcmContentMetaType_Application:
|
|
|
|
str = "PatchId";
|
|
|
|
break;
|
|
|
|
case NcmContentMetaType_Patch:
|
|
|
|
case NcmContentMetaType_AddOnContent:
|
|
|
|
str = "ApplicationId";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
str = "Unknown";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return str;
|
|
|
|
}
|