133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*
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* Copyright (C) 2013-2022 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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* Copyright (C) 2013 Sourcefire, Inc.
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*
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* Authors: David Raynor <draynor@sourcefire.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifndef __DMG_H
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#define __DMG_H
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include "clamav-types.h"
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#include "others.h"
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/* Simple stripe types */
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#define DMG_STRIPE_EMPTY 0x00000000
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#define DMG_STRIPE_STORED 0x00000001
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#define DMG_STRIPE_ZEROES 0x00000002
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/* Compressed stripe type */
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#define DMG_STRIPE_ADC 0x80000004
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#define DMG_STRIPE_DEFLATE 0x80000005
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#define DMG_STRIPE_BZ 0x80000006
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/* Stripe types that are only seen with sector count zero */
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#define DMG_STRIPE_SKIP 0x7FFFFFFE
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#define DMG_STRIPE_END 0xFFFFFFFF
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/* So far, this has been constant */
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#define DMG_SECTOR_SIZE 512
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#ifndef HAVE_ATTRIB_PACKED
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#define __attribute__(x)
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#endif
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#ifdef HAVE_PRAGMA_PACK
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#pragma pack(1)
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#endif
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#ifdef HAVE_PRAGMA_PACK_HPPA
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#pragma pack 1
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#endif
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/* 512-byte block, remember these are big-endian! */
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struct dmg_koly_block {
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uint32_t magic __attribute__((packed));
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uint32_t version __attribute__((packed));
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uint32_t headerLength __attribute__((packed));
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uint32_t flags __attribute__((packed));
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uint64_t runningOffset __attribute__((packed));
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uint64_t dataForkOffset __attribute__((packed));
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uint64_t dataForkLength __attribute__((packed));
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uint64_t resourceForkOffset __attribute__((packed));
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uint64_t resourceForkLength __attribute__((packed));
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uint32_t segment __attribute__((packed));
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uint32_t segmentCount __attribute__((packed));
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/* technically uuid */
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uint8_t segmentID[16];
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uint32_t dataChecksumFields[34] __attribute__((packed));
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uint64_t xmlOffset __attribute__((packed));
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uint64_t xmlLength __attribute__((packed));
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uint8_t padding[120];
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uint32_t masterChecksumFields[34] __attribute__((packed));
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uint32_t imageVariant __attribute__((packed));
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uint64_t sectorCount __attribute__((packed));
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uint32_t reserved[3] __attribute__((packed));
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};
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/* 204-byte block, still big-endian */
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struct dmg_mish_block {
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uint32_t magic __attribute__((packed));
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uint32_t version __attribute__((packed));
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uint64_t startSector __attribute__((packed));
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uint64_t sectorCount __attribute__((packed));
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uint64_t dataOffset __attribute__((packed));
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uint32_t bufferCount __attribute__((packed));
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uint32_t descriptorBlocks __attribute__((packed));
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uint8_t reserved[24];
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uint32_t checksum[34] __attribute__((packed));
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uint32_t blockDataCount __attribute__((packed));
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};
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/* 40-byte block, big-endian */
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struct dmg_block_data {
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uint32_t type __attribute__((packed));
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uint32_t reserved __attribute__((packed));
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uint64_t startSector __attribute__((packed));
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uint64_t sectorCount __attribute__((packed));
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uint64_t dataOffset __attribute__((packed));
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uint64_t dataLength __attribute__((packed));
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};
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struct dmg_mish_with_stripes {
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struct dmg_mish_block *mish;
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struct dmg_block_data *stripes;
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struct dmg_mish_with_stripes *next;
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};
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#ifdef HAVE_PRAGMA_PACK
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#pragma pack()
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#endif
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#ifdef HAVE_PRAGMA_PACK_HPPA
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#pragma pack
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#endif
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int cli_scandmg(cli_ctx *ctx);
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#endif
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