1 files changed, 140 insertions, 0 deletions

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