CABTemplate.bt

//--------------------------------------
//--- 010 Editor v3.2.2 Binary Template
//
// File: cabtemplate.bt
// Author: Alex McDonnell
// Revision: 0.1
// Purpose: Parse Microsoft CAB files
// Changes:  
// 0.2 (SweetScape): 
//   - Allow for multiple flags to be set at the same time
//--------------------------------------

// Define structures used in CAB files

typedef struct {
//header
    char  	signature[4]; 		/* 'MSCF' */
    uint  	reserved1;     		/* 0x00000000 */
    uint  	cbCabinet;    		/* size of this cabinet file in bytes */
    uint  	reserved2;     		/* 0x00000000 */
    uint  	coffFiles;			/* offset of the first CFFILE entry */
    uint  	reserved3;     		/* 0x00000000 */
    ubyte  	versionMinor;   	/* cabinet file format version, minor 0x03 */
    ubyte  	versionMajor;   	/* cabinet file format version, major 0x01 */
    ushort  cFolders;  			/* number of CFFOLDER entries in this cabinet */
    ushort  cFiles;     		/* number of CFFILE entries in this cabinet */
    ushort  flags;        		/* cabinet file option indicators 0x0001 0x0002 0x0004 only*/
    ushort  setID;        		/* must be the same for all cabinets in a set */
    ushort  iCabinet;     	    /* number of this cabinet file in a set */

    if(flags & 4){    

        ushort cbCFHeader;   	/* (optional) size of per-cabinet reserved area */
        ubyte  cbCFFolder;   	/* (optional) size of per-folder reserved area */
        ubyte  cbCFData;        /* (optional) size of per-datablock reserved area */
        
        if(cbCFHeader > 0)
            char abReserve[cbCFHeader];  /* (optional) per-cabinet reserved area */

    }
    if(flags & 1){

        char  	szCabinetPrev[];/* (optional) name of previous cabinet file */
        char  	szDiskPrev[];   /* (optional) name of previous disk */

    }
    if(flags & 2){

        char  	szCabinetNext[];  	/* (optional) name of next cabinet file */
        char  	szDiskNext[];     	/* (optional) name of next disk */

    }

} CFHEADER;

LittleEndian();
CFHEADER header;
local uint counter = 0;

typedef struct {
//folder
    uint    coffCabStart;  /* offset of the first CFDATA block in this folder */
    ushort  cCFData;       /* number of CFDATA blocks in this folder */
    ushort  typeCompress;  /* compression type indicator */

    if( exists(header.cbCFFolder))
        char abReserve[header.cbCFFolder];   /* (optional) per-folder reserved area */

} CFFOLDER;

typedef struct {
//file
  uint      cbFile;           /* uncompressed size of this file in bytes */
  uint      uoffFolderStart;  /* uncompressed offset of this file in the folder */
  ushort    iFolder;          /* index into the CFFOLDER area */
  DOSDATE    date;             /* date stamp for this file */
  DOSTIME    time;             /* time stamp for this file */
  ushort    attribs;          /* attribute flags for this file */
  char      szName[];         /* name of this file */
} CFFILE;    

typedef struct {
//data
  uint      csum;           /* checksum of this CFDATA entry */
  ushort    cbData;         /* number of compressed bytes in this block */
  ushort    cbUncomp;       /* number of uncompressed bytes in this block */

  if( exists(header.cbCFData))
    char  abReserve[header.cbCFData];  /* (optional) per-datablock reserved area */

  char      ab[cbData];     /* compressed data bytes */
} CFDATA;

while(header.cFolders > counter){

    counter++;
    CFFOLDER folder;

}

counter = 0;

while(header.cFiles > counter){

    counter++;
    CFFILE file;

}

counter = 0;

while(folder.cCFData > counter){

    counter++;
    CFDATA data;

}