From c876d3bbefe0dc00c27ca0c12d29da5874946962 Mon Sep 17 00:00:00 2001 From: Dominik Riebeling Date: Wed, 15 Dec 2021 21:04:28 +0100 Subject: rbutil: Merge rbutil with utils folder. rbutil uses several components from the utils folder, and can be considered part of utils too. Having it in a separate folder is an arbitrary split that doesn't help anymore these days, so merge them. This also allows other utils to easily use libtools.make without the need to navigate to a different folder. Change-Id: I3fc2f4de19e3e776553efb5dea5f779dfec0dc21 --- utils/rbutilqt/mspack/cab.h | 140 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 utils/rbutilqt/mspack/cab.h (limited to 'utils/rbutilqt/mspack/cab.h') diff --git a/utils/rbutilqt/mspack/cab.h b/utils/rbutilqt/mspack/cab.h new file mode 100644 index 0000000000..79d9951252 --- /dev/null +++ b/utils/rbutilqt/mspack/cab.h @@ -0,0 +1,140 @@ +/* This file is part of libmspack. + * (C) 2003-2018 Stuart Caie. + * + * libmspack is free software; you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License (LGPL) version 2.1 + * + * For further details, see the file COPYING.LIB distributed with libmspack + */ + +#ifndef MSPACK_CAB_H +#define MSPACK_CAB_H 1 + +/* generic CAB definitions */ + +/* structure offsets */ +#define cfhead_Signature (0x00) +#define cfhead_CabinetSize (0x08) +#define cfhead_FileOffset (0x10) +#define cfhead_MinorVersion (0x18) +#define cfhead_MajorVersion (0x19) +#define cfhead_NumFolders (0x1A) +#define cfhead_NumFiles (0x1C) +#define cfhead_Flags (0x1E) +#define cfhead_SetID (0x20) +#define cfhead_CabinetIndex (0x22) +#define cfhead_SIZEOF (0x24) +#define cfheadext_HeaderReserved (0x00) +#define cfheadext_FolderReserved (0x02) +#define cfheadext_DataReserved (0x03) +#define cfheadext_SIZEOF (0x04) +#define cffold_DataOffset (0x00) +#define cffold_NumBlocks (0x04) +#define cffold_CompType (0x06) +#define cffold_SIZEOF (0x08) +#define cffile_UncompressedSize (0x00) +#define cffile_FolderOffset (0x04) +#define cffile_FolderIndex (0x08) +#define cffile_Date (0x0A) +#define cffile_Time (0x0C) +#define cffile_Attribs (0x0E) +#define cffile_SIZEOF (0x10) +#define cfdata_CheckSum (0x00) +#define cfdata_CompressedSize (0x04) +#define cfdata_UncompressedSize (0x06) +#define cfdata_SIZEOF (0x08) + +/* flags */ +#define cffoldCOMPTYPE_MASK (0x000f) +#define cffoldCOMPTYPE_NONE (0x0000) +#define cffoldCOMPTYPE_MSZIP (0x0001) +#define cffoldCOMPTYPE_QUANTUM (0x0002) +#define cffoldCOMPTYPE_LZX (0x0003) +#define cfheadPREV_CABINET (0x0001) +#define cfheadNEXT_CABINET (0x0002) +#define cfheadRESERVE_PRESENT (0x0004) +#define cffileCONTINUED_FROM_PREV (0xFFFD) +#define cffileCONTINUED_TO_NEXT (0xFFFE) +#define cffileCONTINUED_PREV_AND_NEXT (0xFFFF) + +/* CAB data blocks are <= 32768 bytes in uncompressed form. Uncompressed + * blocks have zero growth. MSZIP guarantees that it won't grow above + * uncompressed size by more than 12 bytes. LZX guarantees it won't grow + * more than 6144 bytes. Quantum has no documentation, but the largest + * block seen in the wild is 337 bytes above uncompressed size. + */ +#define CAB_BLOCKMAX (32768) +#define CAB_INPUTMAX (CAB_BLOCKMAX+6144) + +/* input buffer needs to be CAB_INPUTMAX + 1 byte to allow for max-sized block + * plus 1 trailer byte added by cabd_sys_read_block() for Quantum alignment. + * + * When MSCABD_PARAM_SALVAGE is set, block size is not checked so can be + * up to 65535 bytes, so max input buffer size needed is 65535 + 1 + */ +#define CAB_INPUTMAX_SALVAGE (65535) +#define CAB_INPUTBUF (CAB_INPUTMAX_SALVAGE + 1) + +/* There are no more than 65535 data blocks per folder, so a folder cannot + * be more than 32768*65535 bytes in length. As files cannot span more than + * one folder, this is also their max offset, length and offset+length limit. + */ +#define CAB_FOLDERMAX (65535) +#define CAB_LENGTHMAX (CAB_BLOCKMAX * CAB_FOLDERMAX) + +/* CAB compression definitions */ + +struct mscab_compressor_p { + struct mscab_compressor base; + struct mspack_system *system; + /* todo */ +}; + +/* CAB decompression definitions */ + +struct mscabd_decompress_state { + struct mscabd_folder_p *folder; /* current folder we're extracting from */ + struct mscabd_folder_data *data; /* current folder split we're in */ + unsigned int offset; /* uncompressed offset within folder */ + unsigned int block; /* which block are we decompressing? */ + off_t outlen; /* cumulative sum of block output sizes */ + struct mspack_system sys; /* special I/O code for decompressor */ + int comp_type; /* type of compression used by folder */ + int (*decompress)(void *, off_t); /* decompressor code */ + void *state; /* decompressor state */ + struct mscabd_cabinet_p *incab; /* cabinet where input data comes from */ + struct mspack_file *infh; /* input file handle */ + struct mspack_file *outfh; /* output file handle */ + unsigned char *i_ptr, *i_end; /* input data consumed, end */ + unsigned char input[CAB_INPUTBUF]; /* one input block of data */ +}; + +struct mscab_decompressor_p { + struct mscab_decompressor base; + struct mscabd_decompress_state *d; + struct mspack_system *system; + int buf_size, searchbuf_size, fix_mszip, salvage; /* params */ + int error, read_error; +}; + +struct mscabd_cabinet_p { + struct mscabd_cabinet base; + off_t blocks_off; /* offset to data blocks */ + int block_resv; /* reserved space in data blocks */ +}; + +/* there is one of these for every cabinet a folder spans */ +struct mscabd_folder_data { + struct mscabd_folder_data *next; + struct mscabd_cabinet_p *cab; /* cabinet file of this folder span */ + off_t offset; /* cabinet offset of first datablock */ +}; + +struct mscabd_folder_p { + struct mscabd_folder base; + struct mscabd_folder_data data; /* where are the data blocks? */ + struct mscabd_file *merge_prev; /* first file needing backwards merge */ + struct mscabd_file *merge_next; /* first file needing forwards merge */ +}; + +#endif -- cgit v1.2.3