libaaruformat/src/open.c

/*
 * This file is part of the Aaru Data Preservation Suite.
 * Copyright (c) 2019-2025 Natalia Portillo.
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef __linux__
#include <sys/mman.h>
#endif

#include <aaruformat.h>

#include "internal.h"
#include "utarray.h"

void *aaruf_open(const char *filepath)
{
    aaruformatContext   *ctx       = NULL;
    int                  errorNo   = 0;
    size_t               readBytes = 0;
    long                 pos       = 0;
    uint8_t             *data      = NULL;
    uint64_t             crc64     = 0;
    int                  i = 0, j = 0, k = 0;
    uint16_t             e = 0;
    ChecksumHeader       checksum_header;
    ChecksumEntry const *checksum_entry = NULL;
    uint32_t             signature      = 0;
    UT_array            *index_entries  = NULL;

    ctx = (aaruformatContext *)malloc(sizeof(aaruformatContext));
    memset(ctx, 0, sizeof(aaruformatContext));

    if(ctx == NULL)
    {
        errno = AARUF_ERROR_NOT_ENOUGH_MEMORY;
        return NULL;
    }

    ctx->imageStream = fopen(filepath, "rb");

    if(ctx->imageStream == NULL)
    {
        errorNo = errno;
        free(ctx);
        errno = errorNo;

        return NULL;
    }

    fseek(ctx->imageStream, 0, SEEK_SET);
    readBytes = fread(&ctx->header, 1, sizeof(AaruHeader), ctx->imageStream);

    if(readBytes != sizeof(AaruHeader))
    {
        free(ctx);
        errno = AARUF_ERROR_FILE_TOO_SMALL;

        return NULL;
    }

    if(ctx->header.identifier != DIC_MAGIC && ctx->header.identifier != AARU_MAGIC)
    {
        free(ctx);
        errno = AARUF_ERROR_NOT_AARUFORMAT;

        return NULL;
    }

    if(ctx->header.imageMajorVersion > AARUF_VERSION)
    {
        free(ctx);
        errno = AARUF_ERROR_INCOMPATIBLE_VERSION;

        return NULL;
    }

    fprintf(stderr, "libaaruformat: Opening image version %d.%d\n", ctx->header.imageMajorVersion,
            ctx->header.imageMinorVersion);

    ctx->readableSectorTags = (bool *)malloc(sizeof(bool) * MaxSectorTag);

    if(ctx->readableSectorTags == NULL)
    {
        free(ctx);
        errno = AARUF_ERROR_NOT_ENOUGH_MEMORY;

        return NULL;
    }

    memset(ctx->readableSectorTags, 0, sizeof(bool) * MaxSectorTag);

    ctx->imageInfo.Application        = ctx->header.application;
    ctx->imageInfo.ApplicationVersion = (uint8_t *)malloc(32);
    if(ctx->imageInfo.ApplicationVersion != NULL)
    {
        memset(ctx->imageInfo.ApplicationVersion, 0, 32);
        sprintf((char *)ctx->imageInfo.ApplicationVersion, "%d.%d", ctx->header.applicationMajorVersion,
                ctx->header.applicationMinorVersion);
    }
    ctx->imageInfo.Version = (uint8_t *)malloc(32);
    if(ctx->imageInfo.Version != NULL)
    {
        memset(ctx->imageInfo.Version, 0, 32);
        sprintf((char *)ctx->imageInfo.Version, "%d.%d", ctx->header.imageMajorVersion, ctx->header.imageMinorVersion);
    }
    ctx->imageInfo.MediaType = ctx->header.mediaType;

    // Read the index header
    pos = fseek(ctx->imageStream, ctx->header.indexOffset, SEEK_SET);
    if(pos < 0)
    {
        free(ctx);
        errno = AARUF_ERROR_CANNOT_READ_INDEX;

        return NULL;
    }

    pos = ftell(ctx->imageStream);
    if(pos != ctx->header.indexOffset)
    {
        free(ctx);
        errno = AARUF_ERROR_CANNOT_READ_INDEX;

        return NULL;
    }

    readBytes = fread(&signature, 1, sizeof(uint32_t), ctx->imageStream);

    if(readBytes != sizeof(uint32_t) || (signature != IndexBlock && signature != IndexBlock2))
    {
        free(ctx);
        errno = AARUF_ERROR_CANNOT_READ_INDEX;

        return NULL;
    }

    if(signature == IndexBlock)
        index_entries = process_index_v1(ctx);
    else if(signature == IndexBlock2)
        index_entries = process_index_v2(ctx);

    if(index_entries == NULL)
    {
        fprintf(stderr, "Could not process index.\n");
        utarray_free(index_entries);
        free(ctx);
        errno = AARUF_ERROR_CANNOT_READ_INDEX;

        return NULL;
    }

    fprintf(stderr, "libaaruformat: Index at %" PRIu64 " contains %d entries\n", ctx->header.indexOffset,
            utarray_len(index_entries));

    for(i = 0; i < utarray_len(index_entries); i++)
    {
        IndexEntry *entry = (IndexEntry *)utarray_eltptr(index_entries, i);
        fprintf(stderr, "libaaruformat: Block type %4.4s with data type %d is indexed to be at %" PRIu64 "\n",
                (char *)&entry->blockType, entry->dataType, entry->offset);
    }

    bool foundUserDataDdt    = false;
    ctx->imageInfo.ImageSize = 0;
    for(i = 0; i < utarray_len(index_entries); i++)
    {
        IndexEntry *entry = (IndexEntry *)utarray_eltptr(index_entries, i);
        pos               = fseek(ctx->imageStream, entry->offset, SEEK_SET);

        if(pos < 0 || ftell(ctx->imageStream) != entry->offset)
        {
            fprintf(stderr,
                    "libaaruformat: Could not seek to %" PRIu64 " as indicated by index entry %d, continuing...\n",
                    entry->offset, i);

            continue;
        }

        switch(entry->blockType)
        {
            case DataBlock:
                errorNo = process_data_block(ctx, entry);

                if(errorNo != AARUF_STATUS_OK)
                {
                    utarray_free(index_entries);
                    free(ctx);
                    errno = errorNo;

                    return NULL;
                }

                break;

            case DeDuplicationTable:
                errorNo = process_ddt_v1(ctx, entry, &foundUserDataDdt);

                if(errorNo != AARUF_STATUS_OK)
                {
                    utarray_free(index_entries);
                    free(ctx);
                    errno = errorNo;

                    return NULL;
                }

                break;  // Logical geometry block. It doesn't have a CRC coz, well, it's not so important
            case GeometryBlock:
                readBytes = fread(&ctx->geometryBlock, 1, sizeof(GeometryBlockHeader), ctx->imageStream);

                if(readBytes != sizeof(GeometryBlockHeader))
                {
                    memset(&ctx->geometryBlock, 0, sizeof(GeometryBlockHeader));
                    fprintf(stderr, "libaaruformat: Could not read geometry block, continuing...\n");
                    break;
                }

                if(ctx->geometryBlock.identifier == GeometryBlock)
                {
                    fprintf(stderr, "libaaruformat: Geometry set to %d cylinders %d heads %d sectors per track\n",
                            ctx->geometryBlock.cylinders, ctx->geometryBlock.heads, ctx->geometryBlock.sectorsPerTrack);

                    ctx->imageInfo.Cylinders       = ctx->geometryBlock.cylinders;
                    ctx->imageInfo.Heads           = ctx->geometryBlock.heads;
                    ctx->imageInfo.SectorsPerTrack = ctx->geometryBlock.sectorsPerTrack;
                }
                else
                    memset(&ctx->geometryBlock, 0, sizeof(GeometryBlockHeader));

                break;
                // Metadata block
            case MetadataBlock:
                readBytes = fread(&ctx->metadataBlockHeader, 1, sizeof(MetadataBlockHeader), ctx->imageStream);

                if(readBytes != sizeof(MetadataBlockHeader))
                {
                    memset(&ctx->metadataBlockHeader, 0, sizeof(MetadataBlockHeader));
                    fprintf(stderr, "libaaruformat: Could not read metadata block header, continuing...\n");
                    break;
                }

                if(ctx->metadataBlockHeader.identifier != entry->blockType)
                {
                    memset(&ctx->metadataBlockHeader, 0, sizeof(MetadataBlockHeader));
                    fprintf(stderr, "libaaruformat: Incorrect identifier for data block at position %" PRIu64 "\n",
                            entry->offset);
                    break;
                }

                ctx->imageInfo.ImageSize += ctx->metadataBlockHeader.blockSize;

                ctx->metadataBlock = (uint8_t *)malloc(ctx->metadataBlockHeader.blockSize);

                if(ctx->metadataBlock == NULL)
                {
                    memset(&ctx->metadataBlockHeader, 0, sizeof(MetadataBlockHeader));
                    fprintf(stderr, "libaaruformat: Could not allocate memory for metadata block, continuing...\n");
                    break;
                }

                readBytes = fread(ctx->metadataBlock, 1, ctx->metadataBlockHeader.blockSize, ctx->imageStream);

                if(readBytes != ctx->metadataBlockHeader.blockSize)
                {
                    memset(&ctx->metadataBlockHeader, 0, sizeof(MetadataBlockHeader));
                    free(ctx->metadataBlock);
                    fprintf(stderr, "libaaruformat: Could not read metadata block, continuing...\n");
                }

                if(ctx->metadataBlockHeader.mediaSequence > 0 && ctx->metadataBlockHeader.lastMediaSequence > 0)
                {
                    ctx->imageInfo.MediaSequence     = ctx->metadataBlockHeader.mediaSequence;
                    ctx->imageInfo.LastMediaSequence = ctx->metadataBlockHeader.lastMediaSequence;
                    fprintf(stderr, "libaaruformat: Setting media sequence as %d of %d\n", ctx->imageInfo.MediaSequence,
                            ctx->imageInfo.LastMediaSequence);
                }

                if(ctx->metadataBlockHeader.creatorLength > 0 &&
                   ctx->metadataBlockHeader.creatorOffset + ctx->metadataBlockHeader.creatorLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.Creator = (uint8_t *)malloc(ctx->metadataBlockHeader.creatorLength);
                    if(ctx->imageInfo.Creator != NULL)
                    {
                        memcpy(ctx->imageInfo.Creator, ctx->metadataBlock + ctx->metadataBlockHeader.creatorOffset,
                               ctx->metadataBlockHeader.creatorLength);
                    }
                }

                if(ctx->metadataBlockHeader.commentsLength > 0 &&
                   ctx->metadataBlockHeader.commentsOffset + ctx->metadataBlockHeader.commentsLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.Comments = (uint8_t *)malloc(ctx->metadataBlockHeader.commentsLength);
                    if(ctx->imageInfo.Comments != NULL)
                    {
                        memcpy(ctx->imageInfo.Comments, ctx->metadataBlock + ctx->metadataBlockHeader.commentsOffset,
                               ctx->metadataBlockHeader.commentsLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaTitleLength > 0 &&
                   ctx->metadataBlockHeader.mediaTitleOffset + ctx->metadataBlockHeader.mediaTitleLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaTitle = (uint8_t *)malloc(ctx->metadataBlockHeader.mediaTitleLength);
                    if(ctx->imageInfo.MediaTitle != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaTitle,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaTitleOffset,
                               ctx->metadataBlockHeader.mediaTitleLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaManufacturerLength > 0 &&
                   ctx->metadataBlockHeader.mediaManufacturerOffset +
                           ctx->metadataBlockHeader.mediaManufacturerLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaManufacturer =
                        (uint8_t *)malloc(ctx->metadataBlockHeader.mediaManufacturerLength);
                    if(ctx->imageInfo.MediaManufacturer != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaManufacturer,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaManufacturerOffset,
                               ctx->metadataBlockHeader.mediaManufacturerLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaModelLength > 0 &&
                   ctx->metadataBlockHeader.mediaModelOffset + ctx->metadataBlockHeader.mediaModelLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaModel = (uint8_t *)malloc(ctx->metadataBlockHeader.mediaModelOffset);
                    if(ctx->imageInfo.MediaModel != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaModel,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaModelOffset,
                               ctx->metadataBlockHeader.mediaModelLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaSerialNumberLength > 0 &&
                   ctx->metadataBlockHeader.mediaSerialNumberOffset +
                           ctx->metadataBlockHeader.mediaSerialNumberLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaSerialNumber =
                        (uint8_t *)malloc(ctx->metadataBlockHeader.mediaSerialNumberLength);
                    if(ctx->imageInfo.MediaSerialNumber != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaSerialNumber,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaSerialNumberOffset,
                               ctx->metadataBlockHeader.mediaManufacturerLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaBarcodeLength > 0 &&
                   ctx->metadataBlockHeader.mediaBarcodeOffset + ctx->metadataBlockHeader.mediaBarcodeLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaBarcode = (uint8_t *)malloc(ctx->metadataBlockHeader.mediaBarcodeLength);
                    if(ctx->imageInfo.MediaBarcode != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaBarcode,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaBarcodeOffset,
                               ctx->metadataBlockHeader.mediaBarcodeLength);
                    }
                }

                if(ctx->metadataBlockHeader.mediaPartNumberLength > 0 &&
                   ctx->metadataBlockHeader.mediaPartNumberOffset + ctx->metadataBlockHeader.mediaPartNumberLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.MediaPartNumber = (uint8_t *)malloc(ctx->metadataBlockHeader.mediaPartNumberLength);
                    if(ctx->imageInfo.MediaPartNumber != NULL)
                    {
                        memcpy(ctx->imageInfo.MediaPartNumber,
                               ctx->metadataBlock + ctx->metadataBlockHeader.mediaPartNumberOffset,
                               ctx->metadataBlockHeader.mediaPartNumberLength);
                    }
                }

                if(ctx->metadataBlockHeader.driveManufacturerLength > 0 &&
                   ctx->metadataBlockHeader.driveManufacturerOffset +
                           ctx->metadataBlockHeader.driveManufacturerLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.DriveManufacturer =
                        (uint8_t *)malloc(ctx->metadataBlockHeader.driveManufacturerLength);
                    if(ctx->imageInfo.DriveManufacturer != NULL)
                    {
                        memcpy(ctx->imageInfo.DriveManufacturer,
                               ctx->metadataBlock + ctx->metadataBlockHeader.driveManufacturerOffset,
                               ctx->metadataBlockHeader.driveManufacturerLength);
                    }
                }

                if(ctx->metadataBlockHeader.driveModelLength > 0 &&
                   ctx->metadataBlockHeader.driveModelOffset + ctx->metadataBlockHeader.driveModelLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.DriveModel = (uint8_t *)malloc(ctx->metadataBlockHeader.driveModelLength);
                    if(ctx->imageInfo.DriveModel != NULL)
                    {
                        memcpy(ctx->imageInfo.DriveModel,
                               ctx->metadataBlock + ctx->metadataBlockHeader.driveModelOffset,
                               ctx->metadataBlockHeader.driveModelLength);
                    }
                }

                if(ctx->metadataBlockHeader.driveSerialNumberLength > 0 &&
                   ctx->metadataBlockHeader.driveSerialNumberOffset +
                           ctx->metadataBlockHeader.driveSerialNumberLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.DriveSerialNumber =
                        (uint8_t *)malloc(ctx->metadataBlockHeader.driveSerialNumberLength);
                    if(ctx->imageInfo.DriveSerialNumber != NULL)
                    {
                        memcpy(ctx->imageInfo.DriveSerialNumber,
                               ctx->metadataBlock + ctx->metadataBlockHeader.driveSerialNumberOffset,
                               ctx->metadataBlockHeader.driveSerialNumberLength);
                    }
                }

                if(ctx->metadataBlockHeader.driveManufacturerLength > 0 &&
                   ctx->metadataBlockHeader.driveFirmwareRevisionOffset +
                           ctx->metadataBlockHeader.driveManufacturerLength <=
                       ctx->metadataBlockHeader.blockSize)
                {
                    ctx->imageInfo.DriveFirmwareRevision =
                        (uint8_t *)malloc(ctx->metadataBlockHeader.driveFirmwareRevisionLength);
                    if(ctx->imageInfo.DriveFirmwareRevision != NULL)
                    {
                        memcpy(ctx->imageInfo.DriveFirmwareRevision,
                               ctx->metadataBlock + ctx->metadataBlockHeader.driveFirmwareRevisionLength,
                               ctx->metadataBlockHeader.driveFirmwareRevisionLength);
                    }
                }

                break;
            case TracksBlock:
                readBytes = fread(&ctx->tracksHeader, 1, sizeof(TracksHeader), ctx->imageStream);

                if(readBytes != sizeof(TracksHeader))
                {
                    memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
                    fprintf(stderr, "libaaruformat: Could not read tracks header, continuing...\n");
                    break;
                }

                if(ctx->tracksHeader.identifier != TracksBlock)
                {
                    memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
                    fprintf(stderr, "libaaruformat: Incorrect identifier for data block at position %" PRIu64 "\n",
                            entry->offset);
                }

                ctx->imageInfo.ImageSize += sizeof(TrackEntry) * ctx->tracksHeader.entries;

                ctx->trackEntries = (TrackEntry *)malloc(sizeof(TrackEntry) * ctx->tracksHeader.entries);

                if(ctx->trackEntries == NULL)
                {
                    memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
                    fprintf(stderr, "libaaruformat: Could not allocate memory for metadata block, continuing...\n");
                    break;
                }

                readBytes = fread(ctx->trackEntries, sizeof(TrackEntry), ctx->tracksHeader.entries, ctx->imageStream);

                if(readBytes != ctx->tracksHeader.entries)
                {
                    memset(&ctx->tracksHeader, 0, sizeof(TracksHeader));
                    free(ctx->trackEntries);
                    fprintf(stderr, "libaaruformat: Could not read metadata block, continuing...\n");
                }

                crc64 = aaruf_crc64_data((const uint8_t *)ctx->trackEntries,
                                         ctx->tracksHeader.entries * sizeof(TrackEntry));

                // Due to how C# wrote it, it is effectively reversed
                if(ctx->header.imageMajorVersion <= AARUF_VERSION) crc64 = bswap_64(crc64);

                if(crc64 != ctx->tracksHeader.crc64)
                {
                    fprintf(stderr,
                            "libaaruformat: Incorrect CRC found: 0x%" PRIx64 " found, expected 0x%" PRIx64
                            ", continuing...\n",
                            crc64, ctx->tracksHeader.crc64);
                    break;
                }

                fprintf(stderr, "libaaruformat: Found %d tracks at position %" PRIu64 ".\n", ctx->tracksHeader.entries,
                        entry->offset);

                ctx->imageInfo.HasPartitions = true;
                ctx->imageInfo.HasSessions   = true;

                ctx->numberOfDataTracks = 0;

                for(j = 0; j < ctx->tracksHeader.entries; j++)
                {
                    if(ctx->trackEntries[j].sequence > 0 && ctx->trackEntries[j].sequence <= 99)
                        ctx->numberOfDataTracks++;
                }

                ctx->dataTracks = malloc(sizeof(TrackEntry) * ctx->numberOfDataTracks);

                k = 0;
                for(j = 0; j < ctx->tracksHeader.entries; j++)
                {
                    if(ctx->trackEntries[j].sequence > 0 && ctx->trackEntries[j].sequence <= 99)
                        memcpy(&ctx->dataTracks[k++], &ctx->trackEntries[j], sizeof(TrackEntry));
                }

                break;
                // CICM XML metadata block
            case CicmBlock:
                readBytes = fread(&ctx->cicmBlockHeader, 1, sizeof(CicmMetadataBlock), ctx->imageStream);

                if(readBytes != sizeof(CicmMetadataBlock))
                {
                    memset(&ctx->cicmBlockHeader, 0, sizeof(CicmMetadataBlock));
                    fprintf(stderr, "libaaruformat: Could not read CICM XML metadata header, continuing...\n");
                    break;
                }

                if(ctx->cicmBlockHeader.identifier != CicmBlock)
                {
                    memset(&ctx->cicmBlockHeader, 0, sizeof(CicmMetadataBlock));
                    fprintf(stderr, "libaaruformat: Incorrect identifier for data block at position %" PRIu64 "\n",
                            entry->offset);
                }

                ctx->imageInfo.ImageSize += ctx->cicmBlockHeader.length;

                ctx->cicmBlock = (uint8_t *)malloc(ctx->cicmBlockHeader.length);

                if(ctx->cicmBlock == NULL)
                {
                    memset(&ctx->cicmBlockHeader, 0, sizeof(CicmMetadataBlock));
                    fprintf(stderr,
                            "libaaruformat: Could not allocate memory for CICM XML metadata block, continuing...\n");
                    break;
                }

                readBytes = fread(ctx->cicmBlock, 1, ctx->cicmBlockHeader.length, ctx->imageStream);

                if(readBytes != ctx->metadataBlockHeader.blockSize)
                {
                    memset(&ctx->cicmBlockHeader, 0, sizeof(CicmMetadataBlock));
                    free(ctx->cicmBlock);
                    fprintf(stderr, "libaaruformat: Could not read CICM XML metadata block, continuing...\n");
                }

                fprintf(stderr, "libaaruformat: Found CICM XML metadata block %" PRIu64 ".\n", entry->offset);
                break;
                // Dump hardware block
            case DumpHardwareBlock:
                readBytes = fread(&ctx->dumpHardwareHeader, 1, sizeof(DumpHardwareHeader), ctx->imageStream);

                if(readBytes != sizeof(DumpHardwareHeader))
                {
                    memset(&ctx->dumpHardwareHeader, 0, sizeof(DumpHardwareHeader));
                    fprintf(stderr, "libaaruformat: Could not read dump hardware block header, continuing...\n");
                    break;
                }

                if(ctx->dumpHardwareHeader.identifier != DumpHardwareBlock)
                {
                    memset(&ctx->dumpHardwareHeader, 0, sizeof(DumpHardwareHeader));
                    fprintf(stderr, "libaaruformat: Incorrect identifier for data block at position %" PRIu64 "\n",
                            entry->offset);
                }

                data = (uint8_t *)malloc(ctx->dumpHardwareHeader.length);

                if(data == NULL)
                {
                    memset(&ctx->dumpHardwareHeader, 0, sizeof(DumpHardwareHeader));
                    fprintf(stderr,
                            "libaaruformat: Could not allocate memory for dump hardware block, continuing...\n");
                    break;
                }

                readBytes = fread(data, 1, ctx->dumpHardwareHeader.length, ctx->imageStream);

                if(readBytes == ctx->dumpHardwareHeader.length)
                {
                    crc64 = aaruf_crc64_data(data, ctx->dumpHardwareHeader.length);

                    // Due to how C# wrote it, it is effectively reversed
                    if(ctx->header.imageMajorVersion <= AARUF_VERSION) crc64 = bswap_64(crc64);

                    if(crc64 != ctx->dumpHardwareHeader.crc64)
                    {
                        free(data);
                        fprintf(stderr,
                                "libaaruformat: Incorrect CRC found: 0x%" PRIx64 " found, expected 0x%" PRIx64
                                ", continuing...\n",
                                crc64, ctx->dumpHardwareHeader.crc64);
                        break;
                    }
                }

                free(data);
                fseek(ctx->imageStream, -(long)readBytes, SEEK_CUR);

                ctx->dumpHardwareEntriesWithData = (DumpHardwareEntriesWithData *)malloc(
                    sizeof(DumpHardwareEntriesWithData) * ctx->dumpHardwareHeader.entries);

                if(ctx->dumpHardwareEntriesWithData == NULL)
                {
                    memset(&ctx->dumpHardwareHeader, 0, sizeof(DumpHardwareHeader));
                    fprintf(stderr,
                            "libaaruformat: Could not allocate memory for dump hardware block, continuing...\n");
                    break;
                }

                memset(ctx->dumpHardwareEntriesWithData, 0,
                       sizeof(DumpHardwareEntriesWithData) * ctx->dumpHardwareHeader.entries);

                for(e = 0; e < ctx->dumpHardwareHeader.entries; e++)
                {
                    readBytes = fread(&ctx->dumpHardwareEntriesWithData[e].entry, 1, sizeof(DumpHardwareEntry),
                                      ctx->imageStream);

                    if(readBytes != sizeof(DumpHardwareEntry))
                    {
                        ctx->dumpHardwareHeader.entries = e;
                        fprintf(stderr, "libaaruformat: Could not read dump hardware block entry, continuing...\n");
                        break;
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].manufacturer =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].manufacturer != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .manufacturer[ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength] = 0;
                            readBytes =
                                fread(ctx->dumpHardwareEntriesWithData[e].manufacturer, 1,
                                      ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].manufacturer);
                                ctx->dumpHardwareEntriesWithData[e].entry.manufacturerLength = 0;
                                fprintf(stderr, "libaaruformat: Could not read dump hardware block entry manufacturer, "
                                                "continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.modelLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].model =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.modelLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].model != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .model[ctx->dumpHardwareEntriesWithData[e].entry.modelLength] = 0;
                            readBytes = fread(ctx->dumpHardwareEntriesWithData[e].model, 1,
                                              ctx->dumpHardwareEntriesWithData[e].entry.modelLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.modelLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].model);
                                ctx->dumpHardwareEntriesWithData[e].entry.modelLength = 0;
                                fprintf(
                                    stderr,
                                    "libaaruformat: Could not read dump hardware block entry model, continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.revisionLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].revision =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.revisionLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].revision != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .revision[ctx->dumpHardwareEntriesWithData[e].entry.revisionLength] = 0;
                            readBytes =
                                fread(ctx->dumpHardwareEntriesWithData[e].revision, 1,
                                      ctx->dumpHardwareEntriesWithData[e].entry.revisionLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.revisionLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].revision);
                                ctx->dumpHardwareEntriesWithData[e].entry.revisionLength = 0;
                                fprintf(stderr, "libaaruformat: Could not read dump hardware block entry revision, "
                                                "continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].firmware =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].firmware != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .firmware[ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength] = 0;
                            readBytes =
                                fread(ctx->dumpHardwareEntriesWithData[e].firmware, 1,
                                      ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].firmware);
                                ctx->dumpHardwareEntriesWithData[e].entry.firmwareLength = 0;
                                fprintf(stderr, "libaaruformat: Could not read dump hardware block entry firmware, "
                                                "continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.serialLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].serial =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.serialLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].serial != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .serial[ctx->dumpHardwareEntriesWithData[e].entry.serialLength] = 0;
                            readBytes = fread(ctx->dumpHardwareEntriesWithData[e].serial, 1,
                                              ctx->dumpHardwareEntriesWithData[e].entry.serialLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.serialLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].serial);
                                ctx->dumpHardwareEntriesWithData[e].entry.serialLength = 0;
                                fprintf(
                                    stderr,
                                    "libaaruformat: Could not read dump hardware block entry serial, continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].softwareName =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].softwareName != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .softwareName[ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength] = 0;
                            readBytes =
                                fread(ctx->dumpHardwareEntriesWithData[e].softwareName, 1,
                                      ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength, ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].softwareName);
                                ctx->dumpHardwareEntriesWithData[e].entry.softwareNameLength = 0;
                                fprintf(stderr,
                                        "libaaruformat: Could not read dump hardware block entry software name, "
                                        "continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].softwareVersion =
                            (uint8_t *)malloc(ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].softwareVersion != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e]
                                .softwareVersion[ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength] = 0;
                            readBytes = fread(ctx->dumpHardwareEntriesWithData[e].softwareVersion, 1,
                                              ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength,
                                              ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].softwareVersion);
                                ctx->dumpHardwareEntriesWithData[e].entry.softwareVersionLength = 0;
                                fprintf(stderr,
                                        "libaaruformat: Could not read dump hardware block entry software version, "
                                        "continuing...\n");
                            }
                        }
                    }

                    if(ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength > 0)
                    {
                        ctx->dumpHardwareEntriesWithData[e].softwareOperatingSystem = (uint8_t *)malloc(
                            ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength + 1);

                        if(ctx->dumpHardwareEntriesWithData[e].softwareOperatingSystem != NULL)
                        {
                            ctx->dumpHardwareEntriesWithData[e].softwareOperatingSystem
                                [ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength] = 0;
                            readBytes = fread(ctx->dumpHardwareEntriesWithData[e].softwareOperatingSystem, 1,
                                              ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength,
                                              ctx->imageStream);

                            if(readBytes != ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength)
                            {
                                free(ctx->dumpHardwareEntriesWithData[e].softwareOperatingSystem);
                                ctx->dumpHardwareEntriesWithData[e].entry.softwareOperatingSystemLength = 0;
                                fprintf(stderr, "libaaruformat: Could not read dump hardware block entry manufacturer, "
                                                "continuing...\n");
                            }
                        }
                    }

                    ctx->dumpHardwareEntriesWithData[e].extents =
                        (DumpExtent *)malloc(sizeof(DumpExtent) * ctx->dumpHardwareEntriesWithData->entry.extents);

                    if(ctx->dumpHardwareEntriesWithData[e].extents == NULL)
                    {
                        fprintf(stderr, "libaaruformat: Could not allocate memory for dump hardware block extents, "
                                        "continuing...\n");
                        continue;
                    }

                    readBytes = fread(ctx->dumpHardwareEntriesWithData[e].extents, sizeof(DumpExtent),
                                      ctx->dumpHardwareEntriesWithData[e].entry.extents, ctx->imageStream);

                    if(readBytes != ctx->dumpHardwareEntriesWithData->entry.extents)
                    {
                        free(ctx->dumpHardwareEntriesWithData[e].extents);
                        fprintf(stderr, "libaaruformat: Could not read dump hardware block extents, continuing...\n");
                        continue;
                    }

                    // TODO: qsort()
                }

                break;
            case ChecksumBlock:
                readBytes = fread(&checksum_header, 1, sizeof(ChecksumHeader), ctx->imageStream);

                if(readBytes != sizeof(ChecksumHeader))
                {
                    memset(&checksum_header, 0, sizeof(ChecksumHeader));
                    fprintf(stderr, "libaaruformat: Could not read checksums block header, continuing...\n");
                    break;
                }

                if(checksum_header.identifier != ChecksumBlock)
                {
                    memset(&checksum_header, 0, sizeof(ChecksumHeader));
                    fprintf(stderr, "libaaruformat: Incorrect identifier for checksum block at position %" PRIu64 "\n",
                            entry->offset);
                }

                data = (uint8_t *)malloc(checksum_header.length);

                if(data == NULL)
                {
                    memset(&checksum_header, 0, sizeof(ChecksumHeader));
                    fprintf(stderr, "libaaruformat: Could not allocate memory for checksum block, continuing...\n");
                    break;
                }

                readBytes = fread(data, 1, checksum_header.length, ctx->imageStream);

                if(readBytes != checksum_header.length)
                {
                    memset(&checksum_header, 0, sizeof(ChecksumHeader));
                    free(data);
                    fprintf(stderr, "libaaruformat: Could not read checksums block, continuing...\n");
                    break;
                }

                pos = 0;
                for(j = 0; j < checksum_header.entries; j++)
                {
                    checksum_entry = (ChecksumEntry *)(&data[pos]);
                    pos += sizeof(ChecksumEntry);

                    if(checksum_entry->type == Md5)
                    {
                        memcpy(ctx->checksums.md5, &data[pos], MD5_DIGEST_LENGTH);
                        ctx->checksums.hasMd5 = true;
                    }
                    else if(checksum_entry->type == Sha1)
                    {
                        memcpy(ctx->checksums.sha1, &data[pos], SHA1_DIGEST_LENGTH);
                        ctx->checksums.hasSha1 = true;
                    }
                    else if(checksum_entry->type == Sha256)
                    {
                        memcpy(ctx->checksums.sha256, &data[pos], SHA256_DIGEST_LENGTH);
                        ctx->checksums.hasSha256 = true;
                    }
                    else if(checksum_entry->type == SpamSum)
                    {
                        ctx->checksums.spamsum = malloc(checksum_entry->length + 1);

                        if(ctx->checksums.spamsum != NULL)
                        {
                            memcpy(ctx->checksums.spamsum, &data[pos], checksum_entry->length);
                            ctx->checksums.hasSpamSum = true;
                        }

                        ctx->checksums.spamsum[checksum_entry->length] = 0;
                    }

                    pos += checksum_entry->length;
                }

                checksum_entry = NULL;
                free(data);

                break;
            default:
                fprintf(stderr,
                        "libaaruformat: Unhandled block type %4.4s with data type %d is indexed to be at %" PRIu64 "\n",
                        (char *)&entry->blockType, entry->dataType, entry->offset);
                break;
        }
    }

    utarray_free(index_entries);

    if(!foundUserDataDdt)
    {
        fprintf(stderr, "libaaruformat: Could not find user data deduplication table, aborting...\n");
        aaruf_close(ctx);
        return NULL;
    }

    ctx->imageInfo.CreationTime         = ctx->header.creationTime;
    ctx->imageInfo.LastModificationTime = ctx->header.lastWrittenTime;
    ctx->imageInfo.XmlMediaType         = aaruf_get_xml_mediatype(ctx->header.mediaType);

    if(ctx->geometryBlock.identifier != GeometryBlock && ctx->imageInfo.XmlMediaType == BlockMedia)
    {
        ctx->imageInfo.Cylinders       = (uint32_t)(ctx->imageInfo.Sectors / 16 / 63);
        ctx->imageInfo.Heads           = 16;
        ctx->imageInfo.SectorsPerTrack = 63;
    }

    // Initialize caches
    ctx->blockHeaderCache.cache     = NULL;
    ctx->blockHeaderCache.max_items = MAX_CACHE_SIZE / (ctx->imageInfo.SectorSize * (1 << ctx->shift));
    ctx->blockCache.cache           = NULL;
    ctx->blockCache.max_items       = ctx->blockHeaderCache.max_items;

    // TODO: Cache tracks and sessions?

    // Initialize ECC for Compact Disc
    ctx->eccCdContext = (CdEccContext *)aaruf_ecc_cd_init();

    ctx->magic               = AARU_MAGIC;
    ctx->libraryMajorVersion = LIBAARUFORMAT_MAJOR_VERSION;
    ctx->libraryMinorVersion = LIBAARUFORMAT_MINOR_VERSION;

    return ctx;
}