mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-09-20 05:53:25 +01:00
3bc14696ec
* Ported the logfile handler from libusbhsfs, with some slight modifications. * Rewrote hash file system handling from scratch. I had been wanting to do this for some months now, it's a lot better now. * Code cleanup.
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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* hfs.c
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*
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* Copyright (c) 2020-2021, 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 "gamecard.h"
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bool hfsReadPartitionData(HashFileSystemContext *ctx, void *out, u64 read_size, u64 offset)
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{
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if (!ctx || !ctx->size || !out || !read_size || (offset + read_size) > ctx->size)
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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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/* Read partition data. */
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if (!gamecardReadStorage(out, read_size, ctx->offset + offset))
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{
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LOG_MSG("Failed to read Hash FS partition data!");
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return false;
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}
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return true;
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}
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bool hfsReadEntryData(HashFileSystemContext *ctx, HashFileSystemEntry *fs_entry, void *out, u64 read_size, u64 offset)
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{
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if (!ctx || !fs_entry || !fs_entry->size || (fs_entry->offset + fs_entry->size) > ctx->size || !out || !read_size || (offset + read_size) > fs_entry->size)
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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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/* Read entry data. */
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if (!hfsReadPartitionData(ctx, out, read_size, ctx->header_size + fs_entry->offset + offset))
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{
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LOG_MSG("Failed to read Partition FS entry data!");
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return false;
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}
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return true;
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}
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bool hfsGetTotalDataSize(HashFileSystemContext *ctx, u64 *out_size)
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{
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u64 total_size = 0;
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u32 entry_count = hfsGetEntryCount(ctx);
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HashFileSystemEntry *fs_entry = NULL;
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if (!entry_count || !out_size)
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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 = 0; i < entry_count; i++)
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{
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if (!(fs_entry = hfsGetEntryByIndex(ctx, i)))
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{
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LOG_MSG("Failed to retrieve Hash FS entry #%u!", i);
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return false;
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}
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total_size += fs_entry->size;
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}
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*out_size = total_size;
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return true;
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}
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bool hfsGetEntryIndexByName(HashFileSystemContext *ctx, const char *name, u32 *out_idx)
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{
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HashFileSystemEntry *fs_entry = NULL;
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u32 entry_count = hfsGetEntryCount(ctx), name_table_size = 0;
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char *name_table = hfsGetNameTable(ctx);
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if (!entry_count || !name_table || !name || !*name || !out_idx)
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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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name_table_size = ((HashFileSystemHeader*)ctx->header)->name_table_size;
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for(u32 i = 0; i < entry_count; i++)
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{
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if (!(fs_entry = hfsGetEntryByIndex(ctx, i)))
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{
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LOG_MSG("Failed to retrieve Hash FS entry #%u!", i);
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break;
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}
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if (fs_entry->name_offset >= name_table_size)
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{
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LOG_MSG("Name offset from Hash FS entry #%u exceeds name table size!", i);
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break;
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}
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if (!strcmp(name_table + fs_entry->name_offset, name))
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{
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*out_idx = i;
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return true;
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}
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}
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return false;
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}
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