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Sweden-Number/dlls/cabinet/fci.c

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/*
* File Compression Interface
*
* Copyright 2002 Patrik Stridvall
* Copyright 2005 Gerold Jens Wucherpfennig
* Copyright 2011 Alexandre Julliard
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/*
There is still some work to be done:
- no real compression yet
- unknown behaviour if files>=2GB or cabinet >=4GB
- check if the maximum size for a cabinet is too small to store any data
- call pfnfcignc on exactly the same position as MS FCIAddFile in every case
- probably check err
*/
#include "config.h"
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winternl.h"
#include "fci.h"
#include "cabinet.h"
#include "wine/list.h"
#include "wine/debug.h"
#ifdef WORDS_BIGENDIAN
#define fci_endian_ulong(x) RtlUlongByteSwap(x)
#define fci_endian_uword(x) RtlUshortByteSwap(x)
#else
#define fci_endian_ulong(x) (x)
#define fci_endian_uword(x) (x)
#endif
typedef struct {
cab_UBYTE signature[4]; /* !CAB for unfinished cabinets else MSCF */
cab_ULONG reserved1;
cab_ULONG cbCabinet; /* size of the cabinet file in bytes*/
cab_ULONG reserved2;
cab_ULONG coffFiles; /* offset to first CFFILE section */
cab_ULONG reserved3;
cab_UBYTE versionMinor; /* 3 */
cab_UBYTE versionMajor; /* 1 */
cab_UWORD cFolders; /* number of CFFOLDER entries in the cabinet*/
cab_UWORD cFiles; /* number of CFFILE entries in the cabinet*/
cab_UWORD flags; /* 1=prev cab, 2=next cabinet, 4=reserved sections*/
cab_UWORD setID; /* identification number of all cabinets in a set*/
cab_UWORD iCabinet; /* number of the cabinet in a set */
/* additional area if "flags" were set*/
} CFHEADER; /* minimum 36 bytes */
typedef struct {
cab_ULONG coffCabStart; /* offset to the folder's first CFDATA section */
cab_UWORD cCFData; /* number of this folder's CFDATA sections */
cab_UWORD typeCompress; /* compression type of data in CFDATA section*/
/* additional area if reserve flag was set */
} CFFOLDER; /* minimum 8 bytes */
typedef struct {
cab_ULONG cbFile; /* size of the uncompressed file in bytes */
cab_ULONG uoffFolderStart; /* offset of the uncompressed file in the folder */
cab_UWORD iFolder; /* number of folder in the cabinet 0=first */
/* for special values see below this structure*/
cab_UWORD date; /* last modification date*/
cab_UWORD time; /* last modification time*/
cab_UWORD attribs; /* DOS fat attributes and UTF indicator */
/* ... and a C string with the name of the file */
} CFFILE; /* 16 bytes + name of file */
typedef struct {
cab_ULONG csum; /* checksum of this entry*/
cab_UWORD cbData; /* number of compressed bytes */
cab_UWORD cbUncomp; /* number of bytes when data is uncompressed */
/* optional reserved area */
/* compressed data */
} CFDATA;
struct temp_file
{
INT_PTR handle;
cab_ULONG size;
char name[CB_MAX_FILENAME];
};
struct folder
{
struct list entry;
struct list files_list;
struct list blocks_list;
struct temp_file data;
cab_ULONG data_start;
cab_UWORD data_count;
cab_UWORD compression;
};
struct file
{
struct list entry;
cab_ULONG size; /* uncompressed size */
cab_ULONG offset; /* offset in folder */
cab_UWORD folder; /* index of folder */
cab_UWORD date;
cab_UWORD time;
cab_UWORD attribs;
char name[1];
};
struct data_block
{
struct list entry;
cab_UWORD compressed;
cab_UWORD uncompressed;
};
typedef struct
{
unsigned int magic;
PERF perf;
PFNFCIFILEPLACED fileplaced;
PFNFCIALLOC alloc;
PFNFCIFREE free;
PFNFCIOPEN open;
PFNFCIREAD read;
PFNFCIWRITE write;
PFNFCICLOSE close;
PFNFCISEEK seek;
PFNFCIDELETE delete;
PFNFCIGETTEMPFILE gettemp;
CCAB ccab;
PCCAB pccab;
BOOL fPrevCab;
BOOL fNextCab;
BOOL fSplitFolder;
cab_ULONG statusFolderCopied;
cab_ULONG statusFolderTotal;
BOOL fGetNextCabInVain;
void *pv;
char szPrevCab[CB_MAX_CABINET_NAME]; /* previous cabinet name */
char szPrevDisk[CB_MAX_DISK_NAME]; /* disk name of previous cabinet */
char* data_in; /* uncompressed data blocks */
cab_UWORD cdata_in;
char* data_out; /* compressed data blocks */
ULONG cCompressedBytesInFolder;
cab_UWORD cFolders;
cab_UWORD cFiles;
cab_ULONG cDataBlocks;
cab_ULONG cbFileRemainer; /* uncompressed, yet to be written data */
/* of spanned file of a spanning folder of a spanning cabinet */
struct temp_file data;
BOOL fNewPrevious;
cab_ULONG estimatedCabinetSize;
struct list folders_list;
struct list files_list;
struct list blocks_list;
cab_ULONG folders_size;
cab_ULONG files_size;
cab_ULONG placed_files_size;
cab_ULONG folders_data_size;
} FCI_Int;
#define FCI_INT_MAGIC 0xfcfcfc05
static void set_error( FCI_Int *fci, int oper, int err )
{
fci->perf->erfOper = oper;
fci->perf->erfType = err;
fci->perf->fError = TRUE;
if (err) SetLastError( err );
}
static FCI_Int *get_fci_ptr( HFCI hfci )
{
FCI_Int *fci= (FCI_Int *)hfci;
if (!fci || !fci->magic == FCI_INT_MAGIC)
{
SetLastError( ERROR_INVALID_HANDLE );
return NULL;
}
return fci;
}
/* compute the cabinet header size */
static cab_ULONG get_header_size( FCI_Int *fci )
{
cab_ULONG ret = sizeof(CFHEADER) + fci->ccab.cbReserveCFHeader;
if (fci->ccab.cbReserveCFHeader || fci->ccab.cbReserveCFFolder || fci->ccab.cbReserveCFData)
ret += 4;
if (fci->fPrevCab)
ret += strlen( fci->szPrevCab ) + 1 + strlen( fci->szPrevDisk ) + 1;
if (fci->fNextCab)
ret += strlen( fci->pccab->szCab ) + 1 + strlen( fci->pccab->szDisk ) + 1;
return ret;
}
static BOOL create_temp_file( FCI_Int *fci, struct temp_file *file )
{
int err;
if (!fci->gettemp( file->name, CB_MAX_FILENAME, fci->pv ))
{
set_error( fci, FCIERR_TEMP_FILE, ERROR_FUNCTION_FAILED );
return FALSE;
}
if ((file->handle = fci->open( file->name, _O_RDWR | _O_CREAT | _O_EXCL | _O_BINARY,
_S_IREAD | _S_IWRITE, &err, fci->pv )) == -1)
{
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
file->size = 0;
return TRUE;
}
static BOOL close_temp_file( FCI_Int *fci, struct temp_file *file )
{
int err;
if (file->handle == -1) return TRUE;
if (fci->close( file->handle, &err, fci->pv ) == -1)
{
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
file->handle = -1;
if (fci->delete( file->name, &err, fci->pv ) == -1)
{
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
return TRUE;
}
static struct file *add_file( FCI_Int *fci, const char *filename )
{
unsigned int size = FIELD_OFFSET( struct file, name[strlen(filename) + 1] );
struct file *file = fci->alloc( size );
if (!file)
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
file->size = 0;
file->offset = fci->cDataBlocks * CAB_BLOCKMAX + fci->cdata_in;
file->folder = fci->cFolders;
file->date = 0;
file->time = 0;
file->attribs = 0;
strcpy( file->name, filename );
list_add_tail( &fci->files_list, &file->entry );
return file;
}
static struct file *copy_file( FCI_Int *fci, const struct file *orig )
{
unsigned int size = FIELD_OFFSET( struct file, name[strlen(orig->name) + 1] );
struct file *file = fci->alloc( size );
if (!file)
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
memcpy( file, orig, size );
return file;
}
static void free_file( FCI_Int *fci, struct file *file )
{
list_remove( &file->entry );
fci->free( file );
}
static struct data_block *add_data_block( FCI_Int *fci, cab_UWORD compressed, cab_UWORD uncompressed )
{
struct data_block *block = fci->alloc( sizeof(*block) );
if (!block)
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
block->compressed = compressed;
block->uncompressed = uncompressed;
list_add_tail( &fci->blocks_list, &block->entry );
fci->data.size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + compressed;
fci->cDataBlocks++;
return block;
}
static void free_data_block( FCI_Int *fci, struct data_block *block )
{
list_remove( &block->entry );
fci->free( block );
}
static struct folder *add_folder( FCI_Int *fci )
{
struct folder *folder = fci->alloc( sizeof(*folder) );
if (!folder)
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
folder->data.handle = -1;
folder->data_start = fci->folders_data_size;
folder->data_count = 0;
folder->compression = tcompTYPE_NONE; /* FIXME */
list_init( &folder->files_list );
list_init( &folder->blocks_list );
list_add_tail( &fci->folders_list, &folder->entry );
fci->folders_size += sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder;
fci->cFolders++;
return folder;
}
static void free_folder( FCI_Int *fci, struct folder *folder )
{
struct file *file, *file_next;
struct data_block *block, *block_next;
LIST_FOR_EACH_ENTRY_SAFE( file, file_next, &folder->files_list, struct file, entry )
free_file( fci, file );
LIST_FOR_EACH_ENTRY_SAFE( block, block_next, &folder->blocks_list, struct data_block, entry )
free_data_block( fci, block );
close_temp_file( fci, &folder->data );
list_remove( &folder->entry );
fci->free( folder );
}
/* reset state for the next cabinet file once the current one has been flushed */
static void reset_cabinet( FCI_Int *fci )
{
struct folder *folder, *folder_next;
LIST_FOR_EACH_ENTRY_SAFE( folder, folder_next, &fci->folders_list, struct folder, entry )
free_folder( fci, folder );
fci->cFolders = 0;
fci->cFiles = 0;
fci->folders_size = 0;
fci->placed_files_size = 0;
fci->folders_data_size = 0;
}
static cab_ULONG fci_get_checksum( const void *pv, UINT cb, cab_ULONG seed )
{
cab_ULONG csum;
cab_ULONG ul;
int cUlong;
const BYTE *pb;
csum = seed;
cUlong = cb / 4;
pb = pv;
while (cUlong-- > 0) {
ul = *pb++;
ul |= (((cab_ULONG)(*pb++)) << 8);
ul |= (((cab_ULONG)(*pb++)) << 16);
ul |= (((cab_ULONG)(*pb++)) << 24);
csum ^= ul;
}
ul = 0;
switch (cb % 4) {
case 3:
ul |= (((ULONG)(*pb++)) << 16);
case 2:
ul |= (((ULONG)(*pb++)) << 8);
case 1:
ul |= *pb;
default:
break;
}
csum ^= ul;
return csum;
}
/* copy all remaining data block to a new temp file */
static BOOL copy_data_blocks( FCI_Int *fci, INT_PTR handle, cab_ULONG start_pos,
struct temp_file *temp, PFNFCISTATUS status_callback )
{
struct data_block *block;
int err;
if (fci->seek( handle, start_pos, SEEK_SET, &err, fci->pv ) != start_pos)
{
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
if (!create_temp_file( fci, temp )) return FALSE;
LIST_FOR_EACH_ENTRY( block, &fci->blocks_list, struct data_block, entry )
{
if (fci->read( handle, fci->data_out, block->compressed,
&err, fci->pv ) != block->compressed)
{
close_temp_file( fci, temp );
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
if (fci->write( temp->handle, fci->data_out, block->compressed,
&err, fci->pv ) != block->compressed)
{
close_temp_file( fci, temp );
set_error( fci, FCIERR_TEMP_FILE, err );
return FALSE;
}
temp->size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + block->compressed;
fci->statusFolderCopied += block->compressed;
if (status_callback( statusFolder, fci->statusFolderCopied,
fci->statusFolderTotal, fci->pv) == -1)
{
close_temp_file( fci, temp );
set_error( fci, FCIERR_USER_ABORT, 0 );
return FALSE;
}
}
return TRUE;
}
/* write all folders to disk and remove them from the list */
static BOOL write_folders( FCI_Int *fci, INT_PTR handle, cab_ULONG header_size, PFNFCISTATUS status_callback )
{
struct folder *folder;
int err;
BOOL ret = TRUE;
CFFOLDER *cffolder;
cab_ULONG folder_size = sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder;
if (!(cffolder = fci->alloc( folder_size )))
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
memset( cffolder, 0, folder_size );
/* write the folders */
LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
{
cffolder->coffCabStart = fci_endian_ulong( folder->data_start + header_size );
cffolder->cCFData = fci_endian_uword( folder->data_count );
cffolder->typeCompress = fci_endian_uword( folder->compression );
if (fci->write( handle, cffolder, folder_size, &err, fci->pv ) != folder_size)
{
set_error( fci, FCIERR_CAB_FILE, err );
ret = FALSE;
break;
}
}
fci->free( cffolder );
return ret;
}
/* write all the files to the cabinet file */
static BOOL write_files( FCI_Int *fci, INT_PTR handle, PFNFCISTATUS status_callback )
{
cab_ULONG file_size;
struct folder *folder;
struct file *file;
int err;
BOOL ret = TRUE;
CFFILE *cffile;
if (!(cffile = fci->alloc( sizeof(CFFILE) + CB_MAX_FILENAME )))
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
{
LIST_FOR_EACH_ENTRY( file, &folder->files_list, struct file, entry )
{
cffile->cbFile = fci_endian_ulong( file->size );
cffile->uoffFolderStart = fci_endian_ulong( file->offset );
cffile->iFolder = fci_endian_uword( file->folder );
cffile->date = fci_endian_uword( file->date );
cffile->time = fci_endian_uword( file->time );
cffile->attribs = fci_endian_uword( file->attribs );
lstrcpynA( (char *)(cffile + 1), file->name, CB_MAX_FILENAME );
file_size = sizeof(CFFILE) + strlen( (char *)(cffile + 1) ) + 1;
if (fci->write( handle, cffile, file_size, &err, fci->pv ) != file_size)
{
set_error( fci, FCIERR_CAB_FILE, err );
ret = FALSE;
break;
}
if (!fci->fSplitFolder)
{
fci->statusFolderCopied = 0;
/* TODO TEST THIS further */
fci->statusFolderTotal = fci->folders_data_size + fci->placed_files_size;
}
fci->statusFolderCopied += file_size;
/* report status about copied size of folder */
if (status_callback( statusFolder, fci->statusFolderCopied,
fci->statusFolderTotal, fci->pv ) == -1)
{
set_error( fci, FCIERR_USER_ABORT, 0 );
ret = FALSE;
break;
}
}
}
fci->free( cffile );
return ret;
}
/* write all data blocks to the cabinet file */
static BOOL write_data_blocks( FCI_Int *fci, INT_PTR handle, PFNFCISTATUS status_callback )
{
struct folder *folder;
struct data_block *block;
int err, len;
CFDATA *cfdata;
void *data;
cab_UWORD header_size;
if (!fci->data_out) return TRUE;
header_size = sizeof(CFDATA) + fci->ccab.cbReserveCFData;
cfdata = (CFDATA *)fci->data_out;
memset( cfdata, 0, header_size );
data = (char *)cfdata + header_size;
LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
{
if (fci->seek( folder->data.handle, 0, SEEK_SET, &err, fci->pv ) != 0)
{
set_error( fci, FCIERR_CAB_FILE, err );
return FALSE;
}
LIST_FOR_EACH_ENTRY( block, &folder->blocks_list, struct data_block, entry )
{
len = fci->read( folder->data.handle, data, block->compressed, &err, fci->pv );
if (len != block->compressed) return FALSE;
cfdata->cbData = fci_endian_uword( block->compressed );
cfdata->cbUncomp = fci_endian_uword( block->uncompressed );
cfdata->csum = fci_endian_ulong( fci_get_checksum( &cfdata->cbData,
header_size - FIELD_OFFSET(CFDATA, cbData),
fci_get_checksum( data, len, 0 )));
fci->statusFolderCopied += len;
len += header_size;
if (fci->write( handle, fci->data_out, len, &err, fci->pv ) != len)
{
set_error( fci, FCIERR_CAB_FILE, err );
return FALSE;
}
if (status_callback( statusFolder, fci->statusFolderCopied, fci->statusFolderTotal, fci->pv) == -1)
{
set_error( fci, FCIERR_USER_ABORT, 0 );
return FALSE;
}
}
}
return TRUE;
}
/* write the cabinet file to disk */
static BOOL write_cabinet( FCI_Int *fci, PFNFCISTATUS status_callback )
{
char filename[CB_MAX_CAB_PATH + CB_MAX_CABINET_NAME];
int err;
char *ptr;
INT_PTR handle;
CFHEADER *cfheader;
cab_UWORD flags = 0;
cab_ULONG header_size = get_header_size( fci );
cab_ULONG total_size = header_size + fci->folders_size + fci->placed_files_size + fci->folders_data_size;
if (!(cfheader = fci->alloc( header_size )))
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
memset( cfheader, 0, header_size );
if (fci->fPrevCab) flags |= cfheadPREV_CABINET;
if (fci->fNextCab) flags |= cfheadNEXT_CABINET;
if (fci->ccab.cbReserveCFHeader || fci->ccab.cbReserveCFFolder || fci->ccab.cbReserveCFData)
flags |= cfheadRESERVE_PRESENT;
memcpy( cfheader->signature, "!CAB", 4 );
cfheader->cbCabinet = fci_endian_ulong( total_size );
cfheader->coffFiles = fci_endian_ulong( header_size + fci->folders_size );
cfheader->versionMinor = 3;
cfheader->versionMajor = 1;
cfheader->cFolders = fci_endian_uword( fci->cFolders );
cfheader->cFiles = fci_endian_uword( fci->cFiles );
cfheader->flags = fci_endian_uword( flags );
cfheader->setID = fci_endian_uword( fci->ccab.setID );
cfheader->iCabinet = fci_endian_uword( fci->ccab.iCab - 1 );
ptr = (char *)(cfheader + 1);
if (flags & cfheadRESERVE_PRESENT)
{
struct
{
cab_UWORD cbCFHeader;
cab_UBYTE cbCFFolder;
cab_UBYTE cbCFData;
} *reserve = (void *)ptr;
reserve->cbCFHeader = fci_endian_uword( fci->ccab.cbReserveCFHeader );
reserve->cbCFFolder = fci->ccab.cbReserveCFFolder;
reserve->cbCFData = fci->ccab.cbReserveCFData;
ptr = (char *)(reserve + 1);
}
ptr += fci->ccab.cbReserveCFHeader;
if (flags & cfheadPREV_CABINET)
{
strcpy( ptr, fci->szPrevCab );
ptr += strlen( ptr ) + 1;
strcpy( ptr, fci->szPrevDisk );
ptr += strlen( ptr ) + 1;
}
if (flags & cfheadNEXT_CABINET)
{
strcpy( ptr, fci->pccab->szCab );
ptr += strlen( ptr ) + 1;
strcpy( ptr, fci->pccab->szDisk );
ptr += strlen( ptr ) + 1;
}
assert( ptr - (char *)cfheader == header_size );
strcpy( filename, fci->ccab.szCabPath );
strcat( filename, fci->ccab.szCab );
if ((handle = fci->open( filename, _O_RDWR | _O_CREAT | _O_TRUNC | _O_BINARY,
_S_IREAD | _S_IWRITE, &err, fci->pv )) == -1)
{
set_error( fci, FCIERR_CAB_FILE, err );
fci->free( cfheader );
return FALSE;
}
if (fci->write( handle, cfheader, header_size, &err, fci->pv ) != header_size)
{
set_error( fci, FCIERR_CAB_FILE, err );
goto failed;
}
/* add size of header size of all CFFOLDERs and size of all CFFILEs */
header_size += fci->placed_files_size + fci->folders_size;
if (!write_folders( fci, handle, header_size, status_callback )) goto failed;
if (!write_files( fci, handle, status_callback )) goto failed;
if (!write_data_blocks( fci, handle, status_callback )) goto failed;
/* update the signature */
if (fci->seek( handle, 0, SEEK_SET, &err, fci->pv ) != 0 )
{
set_error( fci, FCIERR_CAB_FILE, err );
goto failed;
}
memcpy( cfheader->signature, "MSCF", 4 );
if (fci->write( handle, cfheader->signature, 4, &err, fci->pv ) != 4)
{
set_error( fci, FCIERR_CAB_FILE, err );
goto failed;
}
fci->close( handle, &err, fci->pv );
fci->free( cfheader );
reset_cabinet( fci );
status_callback( statusCabinet, fci->estimatedCabinetSize, total_size, fci->pv );
return TRUE;
failed:
fci->close( handle, &err, fci->pv );
fci->delete( filename, &err, fci->pv );
fci->free( cfheader );
return FALSE;
}
/* add all pending data blocks folder */
static BOOL add_data_to_folder( FCI_Int *fci, struct folder *folder, cab_ULONG *payload,
PFNFCISTATUS status_callback )
{
struct data_block *block, *new, *next;
BOOL split_block = FALSE;
cab_ULONG current_size, start_pos = 0;
*payload = 0;
current_size = get_header_size( fci ) + fci->folders_size +
fci->files_size + fci->placed_files_size + fci->folders_data_size;
/* move the temp file into the folder structure */
folder->data = fci->data;
fci->data.handle = -1;
LIST_FOR_EACH_ENTRY_SAFE( block, next, &fci->blocks_list, struct data_block, entry )
{
/* No more CFDATA fits into the cabinet under construction */
/* So don't try to store more data into it */
if (fci->fNextCab && (fci->ccab.cb <= sizeof(CFDATA) + fci->ccab.cbReserveCFData +
current_size + sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder))
break;
if (!(new = fci->alloc( sizeof(*new) )))
{
set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
/* Is cabinet with new CFDATA too large? Then data block has to be split */
if( fci->fNextCab &&
(fci->ccab.cb < sizeof(CFDATA) + fci->ccab.cbReserveCFData +
block->compressed + current_size + sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder))
{
/* Modify the size of the compressed data to store only a part of the */
/* data block into the current cabinet. This is done to prevent */
/* that the maximum cabinet size will be exceeded. The remainder */
/* will be stored into the next following cabinet. */
new->compressed = fci->ccab.cb - (sizeof(CFDATA) + fci->ccab.cbReserveCFData + current_size +
sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder );
new->uncompressed = 0; /* on split blocks of data this is zero */
block->compressed -= new->compressed;
split_block = TRUE;
}
else
{
new->compressed = block->compressed;
new->uncompressed = block->uncompressed;
}
start_pos += new->compressed;
current_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + new->compressed;
fci->folders_data_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + new->compressed;
fci->statusFolderCopied += new->compressed;
(*payload) += new->uncompressed;
list_add_tail( &folder->blocks_list, &new->entry );
folder->data_count++;
/* report status with pfnfcis about copied size of folder */
if (status_callback( statusFolder, fci->statusFolderCopied,
fci->statusFolderTotal, fci->pv ) == -1)
{
set_error( fci, FCIERR_USER_ABORT, 0 );
return FALSE;
}
if (split_block) break;
free_data_block( fci, block );
fci->cDataBlocks--;
}
return copy_data_blocks( fci, folder->data.handle, start_pos, &fci->data, status_callback );
}
/* add all pending files to folder */
static BOOL add_files_to_folder( FCI_Int *fci, struct folder *folder, cab_ULONG payload )
{
cab_ULONG sizeOfFiles = 0, sizeOfFilesPrev;
cab_ULONG cbFileRemainer = 0;
struct file *file, *next;
LIST_FOR_EACH_ENTRY_SAFE( file, next, &fci->files_list, struct file, entry )
{
cab_ULONG size = sizeof(CFFILE) + strlen(file->name) + 1;
/* fnfilfnfildest: placed file on cabinet */
fci->fileplaced( &fci->ccab, file->name, file->size,
(file->folder == cffileCONTINUED_FROM_PREV), fci->pv );
sizeOfFilesPrev = sizeOfFiles;
/* set complete size of all processed files */
if (file->folder == cffileCONTINUED_FROM_PREV && fci->cbFileRemainer != 0)
{
sizeOfFiles += fci->cbFileRemainer;
fci->cbFileRemainer = 0;
}
else sizeOfFiles += file->size;
/* check if spanned file fits into this cabinet folder */
if (sizeOfFiles > payload)
{
if (file->folder == cffileCONTINUED_FROM_PREV)
file->folder = cffileCONTINUED_PREV_AND_NEXT;
else
file->folder = cffileCONTINUED_TO_NEXT;
}
list_remove( &file->entry );
list_add_tail( &folder->files_list, &file->entry );
fci->placed_files_size += size;
fci->cFiles++;
/* This is only true for files which will be written into the */
/* next cabinet of the spanning folder */
if (sizeOfFiles > payload)
{
/* add a copy back onto the list */
if (!(file = copy_file( fci, file ))) return FALSE;
list_add_before( &next->entry, &file->entry );
/* Files which data will be partially written into the current cabinet */
if (file->folder == cffileCONTINUED_PREV_AND_NEXT || file->folder == cffileCONTINUED_TO_NEXT)
{
if (sizeOfFilesPrev <= payload)
{
/* The size of the uncompressed, data of a spanning file in a */
/* spanning data */
cbFileRemainer = sizeOfFiles - payload;
}
file->folder = cffileCONTINUED_FROM_PREV;
}
else file->folder = 0;
}
else
{
fci->files_size -= size;
}
}
fci->cbFileRemainer = cbFileRemainer;
return TRUE;
}
/***********************************************************************
* FCICreate (CABINET.10)
*
* FCICreate is provided with several callbacks and
* returns a handle which can be used to create cabinet files.
*
* PARAMS
* perf [IO] A pointer to an ERF structure. When FCICreate
* returns an error condition, error information may
* be found here as well as from GetLastError.
* pfnfiledest [I] A pointer to a function which is called when a file
* is placed. Only useful for subsequent cabinet files.
* pfnalloc [I] A pointer to a function which allocates ram. Uses
* the same interface as malloc.
* pfnfree [I] A pointer to a function which frees ram. Uses the
* same interface as free.
* pfnopen [I] A pointer to a function which opens a file. Uses
* the same interface as _open.
* pfnread [I] A pointer to a function which reads from a file into
* a caller-provided buffer. Uses the same interface
* as _read.
* pfnwrite [I] A pointer to a function which writes to a file from
* a caller-provided buffer. Uses the same interface
* as _write.
* pfnclose [I] A pointer to a function which closes a file handle.
* Uses the same interface as _close.
* pfnseek [I] A pointer to a function which seeks in a file.
* Uses the same interface as _lseek.
* pfndelete [I] A pointer to a function which deletes a file.
* pfnfcigtf [I] A pointer to a function which gets the name of a
* temporary file.
* pccab [I] A pointer to an initialized CCAB structure.
* pv [I] A pointer to an application-defined notification
* function which will be passed to other FCI functions
* as a parameter.
*
* RETURNS
* On success, returns an FCI handle of type HFCI.
* On failure, the NULL file handle is returned. Error
* info can be retrieved from perf.
*
* INCLUDES
* fci.h
*
*/
HFCI __cdecl FCICreate(
PERF perf,
PFNFCIFILEPLACED pfnfiledest,
PFNFCIALLOC pfnalloc,
PFNFCIFREE pfnfree,
PFNFCIOPEN pfnopen,
PFNFCIREAD pfnread,
PFNFCIWRITE pfnwrite,
PFNFCICLOSE pfnclose,
PFNFCISEEK pfnseek,
PFNFCIDELETE pfndelete,
PFNFCIGETTEMPFILE pfnfcigtf,
PCCAB pccab,
void *pv)
{
FCI_Int *p_fci_internal;
if (!perf) {
SetLastError(ERROR_BAD_ARGUMENTS);
return NULL;
}
if ((!pfnalloc) || (!pfnfree) || (!pfnopen) || (!pfnread) ||
(!pfnwrite) || (!pfnclose) || (!pfnseek) || (!pfndelete) ||
(!pfnfcigtf) || (!pccab)) {
perf->erfOper = FCIERR_NONE;
perf->erfType = ERROR_BAD_ARGUMENTS;
perf->fError = TRUE;
SetLastError(ERROR_BAD_ARGUMENTS);
return NULL;
}
if (!((p_fci_internal = pfnalloc(sizeof(FCI_Int))))) {
perf->erfOper = FCIERR_ALLOC_FAIL;
perf->erfType = ERROR_NOT_ENOUGH_MEMORY;
perf->fError = TRUE;
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
p_fci_internal->magic = FCI_INT_MAGIC;
p_fci_internal->perf = perf;
p_fci_internal->fileplaced = pfnfiledest;
p_fci_internal->alloc = pfnalloc;
p_fci_internal->free = pfnfree;
p_fci_internal->open = pfnopen;
p_fci_internal->read = pfnread;
p_fci_internal->write = pfnwrite;
p_fci_internal->close = pfnclose;
p_fci_internal->seek = pfnseek;
p_fci_internal->delete = pfndelete;
p_fci_internal->gettemp = pfnfcigtf;
p_fci_internal->ccab = *pccab;
p_fci_internal->pccab = pccab;
p_fci_internal->fPrevCab = FALSE;
p_fci_internal->fNextCab = FALSE;
p_fci_internal->fSplitFolder = FALSE;
p_fci_internal->fGetNextCabInVain = FALSE;
p_fci_internal->pv = pv;
p_fci_internal->data_in = NULL;
p_fci_internal->cdata_in = 0;
p_fci_internal->data_out = NULL;
p_fci_internal->cCompressedBytesInFolder = 0;
p_fci_internal->cFolders = 0;
p_fci_internal->cFiles = 0;
p_fci_internal->cDataBlocks = 0;
p_fci_internal->data.handle = -1;
p_fci_internal->fNewPrevious = FALSE;
p_fci_internal->estimatedCabinetSize = 0;
p_fci_internal->statusFolderTotal = 0;
p_fci_internal->folders_size = 0;
p_fci_internal->files_size = 0;
p_fci_internal->placed_files_size = 0;
p_fci_internal->folders_data_size = 0;
list_init( &p_fci_internal->folders_list );
list_init( &p_fci_internal->files_list );
list_init( &p_fci_internal->blocks_list );
memcpy(p_fci_internal->szPrevCab, pccab->szCab, CB_MAX_CABINET_NAME);
memcpy(p_fci_internal->szPrevDisk, pccab->szDisk, CB_MAX_DISK_NAME);
if (!create_temp_file( p_fci_internal, &p_fci_internal->data )) return NULL;
return (HFCI)p_fci_internal;
}
static BOOL fci_flush_data_block (FCI_Int *p_fci_internal, int* err,
PFNFCISTATUS pfnfcis) {
/* attention no checks if there is data available!!! */
struct data_block *block;
/* TODO compress the data of p_fci_internal->data_in */
/* and write it to p_fci_internal->data_out */
memcpy(p_fci_internal->data_out, p_fci_internal->data_in,
p_fci_internal->cdata_in /* number of bytes to copy */);
if (!(block = add_data_block( p_fci_internal, p_fci_internal->cdata_in, p_fci_internal->cdata_in )))
return FALSE;
/* write p_fci_internal->data_out to p_fci_internal->data.handle */
if( p_fci_internal->write( p_fci_internal->data.handle, /* file handle */
p_fci_internal->data_out, /* memory buffer */
block->compressed, /* number of bytes to copy */
err, p_fci_internal->pv) != block->compressed) {
set_error( p_fci_internal, FCIERR_TEMP_FILE, ERROR_WRITE_FAULT );
return FALSE;
}
/* TODO error handling of err */
/* reset the offset */
p_fci_internal->cdata_in = 0;
p_fci_internal->cCompressedBytesInFolder += block->compressed;
/* report status with pfnfcis about uncompressed and compressed file data */
if( (*pfnfcis)(statusFile, block->compressed, block->uncompressed,
p_fci_internal->pv) == -1) {
set_error( p_fci_internal, FCIERR_USER_ABORT, 0 );
return FALSE;
}
return TRUE;
} /* end of fci_flush_data_block */
static BOOL fci_flush_folder( FCI_Int *p_fci_internal,
BOOL fGetNextCab,
PFNFCIGETNEXTCABINET pfnfcignc,
PFNFCISTATUS pfnfcis)
{
int err;
cab_ULONG payload;
cab_ULONG read_result;
struct folder *folder;
if ((!pfnfcignc) || (!pfnfcis)) {
set_error( p_fci_internal, FCIERR_NONE, ERROR_BAD_ARGUMENTS );
return FALSE;
}
if( p_fci_internal->fGetNextCabInVain &&
p_fci_internal->fNextCab ){
/* internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* If there was no FCIAddFile or FCIFlushFolder has already been called */
/* this function will return TRUE */
if( p_fci_internal->files_size == 0 ) {
if ( p_fci_internal->data.size != 0 ) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
return TRUE;
}
if (p_fci_internal->data_in==NULL || p_fci_internal->data_out==NULL ) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* FCIFlushFolder has already been called... */
if (p_fci_internal->fSplitFolder && p_fci_internal->placed_files_size!=0) {
return TRUE;
}
/* This can be set already, because it makes only a difference */
/* when the current function exits with return FALSE */
p_fci_internal->fSplitFolder=FALSE;
/* START of COPY */
/* if there is data in p_fci_internal->data_in */
if (p_fci_internal->cdata_in!=0) {
if( !fci_flush_data_block(p_fci_internal, &err, pfnfcis) ) return FALSE;
}
/* reset to get the number of data blocks of this folder which are */
/* actually in this cabinet ( at least partially ) */
p_fci_internal->cDataBlocks=0;
p_fci_internal->statusFolderTotal = get_header_size( p_fci_internal ) +
sizeof(CFFOLDER) + p_fci_internal->ccab.cbReserveCFFolder +
p_fci_internal->placed_files_size+
p_fci_internal->folders_data_size + p_fci_internal->files_size+
p_fci_internal->data.size + p_fci_internal->folders_size;
p_fci_internal->statusFolderCopied = 0;
/* report status with pfnfcis about copied size of folder */
if( (*pfnfcis)(statusFolder, p_fci_internal->statusFolderCopied,
p_fci_internal->statusFolderTotal, /* TODO total folder size */
p_fci_internal->pv) == -1) {
set_error( p_fci_internal, FCIERR_USER_ABORT, 0 );
return FALSE;
}
/* USE the variable read_result */
read_result = get_header_size( p_fci_internal ) + p_fci_internal->folders_data_size +
p_fci_internal->placed_files_size + p_fci_internal->folders_size;
if(p_fci_internal->files_size!=0) {
read_result+= sizeof(CFFOLDER)+p_fci_internal->ccab.cbReserveCFFolder;
}
/* Check if multiple cabinets have to be created. */
/* Might be too much data for the maximum allowed cabinet size.*/
/* When any further data will be added later, it might not */
/* be possible to flush the cabinet, because there might */
/* not be enough space to store the name of the following */
/* cabinet and name of the corresponding disk. */
/* So take care of this and get the name of the next cabinet */
if( p_fci_internal->fGetNextCabInVain==FALSE &&
p_fci_internal->fNextCab==FALSE &&
(
(
p_fci_internal->ccab.cb < read_result +
p_fci_internal->data.size +
p_fci_internal->files_size +
CB_MAX_CABINET_NAME + /* next cabinet name */
CB_MAX_DISK_NAME /* next disk name */
) || fGetNextCab
)
) {
/* increment cabinet index */
++(p_fci_internal->pccab->iCab);
/* get name of next cabinet */
p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
if (!(*pfnfcignc)(p_fci_internal->pccab,
p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
p_fci_internal->pv)) {
set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
return FALSE;
}
/* Skip a few lines of code. This is caught by the next if. */
p_fci_internal->fGetNextCabInVain=TRUE;
}
/* too much data for cabinet */
if( (p_fci_internal->fGetNextCabInVain ||
p_fci_internal->fNextCab ) &&
(
(
p_fci_internal->ccab.cb < read_result +
p_fci_internal->data.size +
p_fci_internal->files_size +
strlen(p_fci_internal->pccab->szCab)+1 + /* next cabinet name */
strlen(p_fci_internal->pccab->szDisk)+1 /* next disk name */
) || fGetNextCab
)
) {
p_fci_internal->fGetNextCabInVain=FALSE;
p_fci_internal->fNextCab=TRUE;
/* return FALSE if there is not enough space left*/
/* this should never happen */
if (p_fci_internal->ccab.cb <=
p_fci_internal->files_size +
read_result +
strlen(p_fci_internal->pccab->szCab)+1 + /* next cabinet name */
strlen(p_fci_internal->pccab->szDisk)+1 /* next disk name */
) {
return FALSE;
}
/* the folder will be split across cabinets */
p_fci_internal->fSplitFolder=TRUE;
} else {
/* this should never happen */
if (p_fci_internal->fNextCab) {
/* internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
}
/* set seek of p_fci_internal->data.handle to 0 */
if( p_fci_internal->seek(p_fci_internal->data.handle,0,SEEK_SET,&err,
p_fci_internal->pv) !=0 ) {
/* wrong return value */
set_error( p_fci_internal, FCIERR_NONE, ERROR_SEEK );
return FALSE;
}
/* TODO error handling of err */
if (!(folder = add_folder( p_fci_internal ))) return FALSE;
if (!add_data_to_folder( p_fci_internal, folder, &payload, pfnfcis )) return FALSE;
if (!add_files_to_folder( p_fci_internal, folder, payload )) return FALSE;
/* reset CFFolder specific information */
p_fci_internal->cDataBlocks=0;
p_fci_internal->cCompressedBytesInFolder=0;
return TRUE;
}
static BOOL fci_flush_cabinet( FCI_Int *p_fci_internal,
BOOL fGetNextCab,
PFNFCIGETNEXTCABINET pfnfcignc,
PFNFCISTATUS pfnfcis)
{
cab_ULONG read_result=0;
BOOL returntrue=FALSE;
/* TODO test if fci_flush_cabinet really aborts if there was no FCIAddFile */
/* when FCIFlushCabinet was or FCIAddFile hasn't been called */
if( p_fci_internal->files_size==0 && fGetNextCab ) {
returntrue=TRUE;
}
if (!fci_flush_folder(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)){
/* TODO set error */
return FALSE;
}
if(returntrue) return TRUE;
if ( (p_fci_internal->fSplitFolder && p_fci_internal->fNextCab==FALSE)||
(p_fci_internal->folders_size==0 &&
(p_fci_internal->files_size!=0 ||
p_fci_internal->placed_files_size!=0 )
) )
{
/* error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* create the cabinet */
if (!write_cabinet( p_fci_internal, pfnfcis )) return FALSE;
p_fci_internal->fPrevCab=TRUE;
/* The sections szPrevCab and szPrevDisk are not being updated, because */
/* MS CABINET.DLL always puts the first cabinet name and disk into them */
if (p_fci_internal->fNextCab) {
p_fci_internal->fNextCab=FALSE;
if (p_fci_internal->files_size==0 && p_fci_internal->data.size!=0) {
/* THIS CAN NEVER HAPPEN */
/* set error code */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
if( p_fci_internal->fNewPrevious ) {
memcpy(p_fci_internal->szPrevCab, p_fci_internal->ccab.szCab,
CB_MAX_CABINET_NAME);
memcpy(p_fci_internal->szPrevDisk, p_fci_internal->ccab.szDisk,
CB_MAX_DISK_NAME);
p_fci_internal->fNewPrevious=FALSE;
}
p_fci_internal->ccab = *p_fci_internal->pccab;
/* REUSE the variable read_result */
read_result=get_header_size( p_fci_internal );
if(p_fci_internal->files_size!=0) {
read_result+=p_fci_internal->ccab.cbReserveCFFolder;
}
read_result+= p_fci_internal->data.size +
p_fci_internal->files_size + p_fci_internal->folders_data_size +
p_fci_internal->placed_files_size + p_fci_internal->folders_size +
sizeof(CFFOLDER); /* set size of new CFFolder entry */
/* too much data for the maximum size of a cabinet */
if( p_fci_internal->fGetNextCabInVain==FALSE &&
p_fci_internal->ccab.cb < read_result ) {
return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
}
/* Might be too much data for the maximum size of a cabinet.*/
/* When any further data will be added later, it might not */
/* be possible to flush the cabinet, because there might */
/* not be enough space to store the name of the following */
/* cabinet and name of the corresponding disk. */
/* So take care of this and get the name of the next cabinet */
if (p_fci_internal->fGetNextCabInVain==FALSE && (
p_fci_internal->ccab.cb < read_result +
CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
)) {
/* increment cabinet index */
++(p_fci_internal->pccab->iCab);
/* get name of next cabinet */
p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
if (!(*pfnfcignc)(p_fci_internal->pccab,
p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
p_fci_internal->pv)) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
return FALSE;
}
/* Skip a few lines of code. This is caught by the next if. */
p_fci_internal->fGetNextCabInVain=TRUE;
}
/* too much data for cabinet */
if (p_fci_internal->fGetNextCabInVain && (
p_fci_internal->ccab.cb < read_result +
strlen(p_fci_internal->ccab.szCab)+1+
strlen(p_fci_internal->ccab.szDisk)+1
)) {
p_fci_internal->fGetNextCabInVain=FALSE;
p_fci_internal->fNextCab=TRUE;
return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
}
/* if the FolderThreshold has been reached flush the folder automatically */
if (p_fci_internal->cCompressedBytesInFolder >= p_fci_internal->ccab.cbFolderThresh)
return fci_flush_folder(p_fci_internal, FALSE, pfnfcignc, pfnfcis);
if( p_fci_internal->files_size>0 ) {
if( !fci_flush_folder(p_fci_internal, FALSE, pfnfcignc, pfnfcis) ) return FALSE;
p_fci_internal->fNewPrevious=TRUE;
}
} else {
p_fci_internal->fNewPrevious=FALSE;
if( p_fci_internal->files_size>0 || p_fci_internal->data.size) {
/* THIS MAY NEVER HAPPEN */
/* set error structures */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
}
return TRUE;
} /* end of fci_flush_cabinet */
/***********************************************************************
* FCIAddFile (CABINET.11)
*
* FCIAddFile adds a file to the to be created cabinet file
*
* PARAMS
* hfci [I] An HFCI from FCICreate
* pszSourceFile [I] A pointer to a C string which contains the name and
* location of the file which will be added to the cabinet
* pszFileName [I] A pointer to a C string which contains the name under
* which the file will be stored in the cabinet
* fExecute [I] A boolean value which indicates if the file should be
* executed after extraction of self extracting
* executables
* pfnfcignc [I] A pointer to a function which gets information about
* the next cabinet
* pfnfcis [IO] A pointer to a function which will report status
* information about the compression process
* pfnfcioi [I] A pointer to a function which reports file attributes
* and time and date information
* typeCompress [I] Compression type
*
* RETURNS
* On success, returns TRUE
* On failure, returns FALSE
*
* INCLUDES
* fci.h
*
*/
BOOL __cdecl FCIAddFile(
HFCI hfci,
char *pszSourceFile,
char *pszFileName,
BOOL fExecute,
PFNFCIGETNEXTCABINET pfnfcignc,
PFNFCISTATUS pfnfcis,
PFNFCIGETOPENINFO pfnfcigoi,
TCOMP typeCompress)
{
int err;
cab_ULONG read_result;
int file_handle;
struct file *file;
FCI_Int *p_fci_internal = get_fci_ptr( hfci );
if (!p_fci_internal) return FALSE;
if ((!pszSourceFile) || (!pszFileName) || (!pfnfcignc) || (!pfnfcis) ||
(!pfnfcigoi) || strlen(pszFileName)>=CB_MAX_FILENAME) {
set_error( p_fci_internal, FCIERR_NONE, ERROR_BAD_ARGUMENTS );
return FALSE;
}
/* TODO check if pszSourceFile??? */
if(p_fci_internal->fGetNextCabInVain && p_fci_internal->fNextCab) {
/* internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
if(p_fci_internal->fNextCab) {
/* internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
if (!(file = add_file( p_fci_internal, pszFileName ))) return FALSE;
/* allocation of memory */
if (p_fci_internal->data_in==NULL) {
if (p_fci_internal->cdata_in!=0) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
if (p_fci_internal->data_out!=NULL) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
if(!(p_fci_internal->data_in = p_fci_internal->alloc(CB_MAX_CHUNK))) {
set_error( p_fci_internal, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
if (p_fci_internal->data_out==NULL) {
if(!(p_fci_internal->data_out = p_fci_internal->alloc( 2 * CB_MAX_CHUNK))){
set_error( p_fci_internal, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
}
}
if (p_fci_internal->data_out==NULL) {
p_fci_internal->free(p_fci_internal->data_in);
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* get information about the file */
/* set defaults in case callback doesn't set one or more fields */
file_handle = pfnfcigoi( pszSourceFile, &file->date, &file->time, &file->attribs,
&err, p_fci_internal->pv );
/* check file_handle */
if(file_handle==0){
set_error( p_fci_internal, FCIERR_OPEN_SRC, ERROR_OPEN_FAILED );
}
/* TODO error handling of err */
if (fExecute) { file->attribs |= _A_EXEC; }
/* REUSE the variable read_result */
read_result=get_header_size( p_fci_internal ) + p_fci_internal->ccab.cbReserveCFFolder;
read_result+= sizeof(CFFILE) + strlen(pszFileName)+1 +
p_fci_internal->files_size + p_fci_internal->folders_data_size +
p_fci_internal->placed_files_size + p_fci_internal->folders_size +
sizeof(CFFOLDER); /* size of new CFFolder entry */
/* Might be too much data for the maximum size of a cabinet.*/
/* When any further data will be added later, it might not */
/* be possible to flush the cabinet, because there might */
/* not be enough space to store the name of the following */
/* cabinet and name of the corresponding disk. */
/* So take care of this and get the name of the next cabinet */
if( p_fci_internal->fGetNextCabInVain==FALSE &&
p_fci_internal->fNextCab==FALSE &&
( p_fci_internal->ccab.cb < read_result +
CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
)
) {
/* increment cabinet index */
++(p_fci_internal->pccab->iCab);
/* get name of next cabinet */
p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
if (!(*pfnfcignc)(p_fci_internal->pccab,
p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
p_fci_internal->pv)) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
return FALSE;
}
/* Skip a few lines of code. This is caught by the next if. */
p_fci_internal->fGetNextCabInVain=TRUE;
}
if( p_fci_internal->fGetNextCabInVain &&
p_fci_internal->fNextCab
) {
/* THIS CAN NEVER HAPPEN */
/* set error code */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* too much data for cabinet */
if( p_fci_internal->fGetNextCabInVain &&
(
p_fci_internal->ccab.cb < read_result +
strlen(p_fci_internal->pccab->szCab)+1+
strlen(p_fci_internal->pccab->szDisk)+1
)) {
p_fci_internal->fGetNextCabInVain=FALSE;
p_fci_internal->fNextCab=TRUE;
if(!fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis)) return FALSE;
}
if( p_fci_internal->fNextCab ) {
/* THIS MAY NEVER HAPPEN */
/* set error code */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* read the contents of the file blockwise */
while (!FALSE) {
if (p_fci_internal->cdata_in > CAB_BLOCKMAX) {
/* internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
read_result = p_fci_internal->read( file_handle /* file handle */,
(p_fci_internal->data_in + p_fci_internal->cdata_in) /* memory buffer */,
(CAB_BLOCKMAX - p_fci_internal->cdata_in) /* number of bytes to copy */,
&err, p_fci_internal->pv);
/* TODO error handling of err */
if( read_result==0 ) break;
/* increment the block size */
p_fci_internal->cdata_in += read_result;
/* increment the file size */
file->size += read_result;
if ( p_fci_internal->cdata_in > CAB_BLOCKMAX ) {
/* report internal error */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* write a whole block */
if ( p_fci_internal->cdata_in == CAB_BLOCKMAX ) {
if( !fci_flush_data_block(p_fci_internal, &err, pfnfcis) ) return FALSE;
}
}
/* close the file from FCIAddFile */
p_fci_internal->close(file_handle,&err,p_fci_internal->pv);
/* TODO error handling of err */
p_fci_internal->files_size += sizeof(CFFILE) + strlen(pszFileName)+1;
/* REUSE the variable read_result */
read_result = get_header_size( p_fci_internal ) + p_fci_internal->ccab.cbReserveCFFolder;
read_result+= p_fci_internal->data.size +
p_fci_internal->files_size + p_fci_internal->folders_data_size +
p_fci_internal->placed_files_size + p_fci_internal->folders_size +
sizeof(CFFOLDER); /* set size of new CFFolder entry */
/* too much data for the maximum size of a cabinet */
/* (ignoring the unflushed data block) */
if( p_fci_internal->fGetNextCabInVain==FALSE &&
p_fci_internal->fNextCab==FALSE && /* this is always the case */
p_fci_internal->ccab.cb < read_result ) {
return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
}
/* Might be too much data for the maximum size of a cabinet.*/
/* When any further data will be added later, it might not */
/* be possible to flush the cabinet, because there might */
/* not be enough space to store the name of the following */
/* cabinet and name of the corresponding disk. */
/* So take care of this and get the name of the next cabinet */
/* (ignoring the unflushed data block) */
if( p_fci_internal->fGetNextCabInVain==FALSE &&
p_fci_internal->fNextCab==FALSE &&
( p_fci_internal->ccab.cb < read_result +
CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
)
) {
/* increment cabinet index */
++(p_fci_internal->pccab->iCab);
/* get name of next cabinet */
p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
if (!(*pfnfcignc)(p_fci_internal->pccab,
p_fci_internal->estimatedCabinetSize,/* estimated size of cab */
p_fci_internal->pv)) {
/* error handling */
set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
return FALSE;
}
/* Skip a few lines of code. This is caught by the next if. */
p_fci_internal->fGetNextCabInVain=TRUE;
}
if( p_fci_internal->fGetNextCabInVain &&
p_fci_internal->fNextCab
) {
/* THIS CAN NEVER HAPPEN */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* too much data for cabinet */
if( (p_fci_internal->fGetNextCabInVain ||
p_fci_internal->fNextCab) && (
p_fci_internal->ccab.cb < read_result +
strlen(p_fci_internal->pccab->szCab)+1+
strlen(p_fci_internal->pccab->szDisk)+1
)) {
p_fci_internal->fGetNextCabInVain=FALSE;
p_fci_internal->fNextCab=TRUE;
return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
}
if( p_fci_internal->fNextCab ) {
/* THIS MAY NEVER HAPPEN */
/* set error code */
set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
return FALSE;
}
/* if the FolderThreshold has been reached flush the folder automatically */
if (p_fci_internal->cCompressedBytesInFolder >= p_fci_internal->ccab.cbFolderThresh)
return FCIFlushFolder(hfci, pfnfcignc, pfnfcis);
return TRUE;
} /* end of FCIAddFile */
/***********************************************************************
* FCIFlushFolder (CABINET.12)
*
* FCIFlushFolder completes the CFFolder structure under construction.
*
* All further data which is added by FCIAddFile will be associated to
* the next CFFolder structure.
*
* FCIFlushFolder will be called by FCIAddFile automatically if the
* threshold (stored in the member cbFolderThresh of the CCAB structure
* pccab passed to FCICreate) is exceeded.
*
* FCIFlushFolder will be called by FCIFlushFolder automatically before
* any data will be written into the cabinet file.
*
* PARAMS
* hfci [I] An HFCI from FCICreate
* pfnfcignc [I] A pointer to a function which gets information about
* the next cabinet
* pfnfcis [IO] A pointer to a function which will report status
* information about the compression process
*
* RETURNS
* On success, returns TRUE
* On failure, returns FALSE
*
* INCLUDES
* fci.h
*
*/
BOOL __cdecl FCIFlushFolder(
HFCI hfci,
PFNFCIGETNEXTCABINET pfnfcignc,
PFNFCISTATUS pfnfcis)
{
FCI_Int *p_fci_internal = get_fci_ptr( hfci );
if (!p_fci_internal) return FALSE;
return fci_flush_folder(p_fci_internal,FALSE,pfnfcignc,pfnfcis);
}
/***********************************************************************
* FCIFlushCabinet (CABINET.13)
*
* FCIFlushCabinet stores the data which has been added by FCIAddFile
* into the cabinet file. If the maximum cabinet size (stored in the
* member cb of the CCAB structure pccab passed to FCICreate) has been
* exceeded FCIFlushCabinet will be called automatic by FCIAddFile.
* The remaining data still has to be flushed manually by calling
* FCIFlushCabinet.
*
* After FCIFlushCabinet has been called (manually) FCIAddFile must
* NOT be called again. Then hfci has to be released by FCIDestroy.
*
* PARAMS
* hfci [I] An HFCI from FCICreate
* fGetNextCab [I] Whether you want to add additional files to a
* cabinet set (TRUE) or whether you want to
* finalize it (FALSE)
* pfnfcignc [I] A pointer to a function which gets information about
* the next cabinet
* pfnfcis [IO] A pointer to a function which will report status
* information about the compression process
*
* RETURNS
* On success, returns TRUE
* On failure, returns FALSE
*
* INCLUDES
* fci.h
*
*/
BOOL __cdecl FCIFlushCabinet(
HFCI hfci,
BOOL fGetNextCab,
PFNFCIGETNEXTCABINET pfnfcignc,
PFNFCISTATUS pfnfcis)
{
FCI_Int *p_fci_internal = get_fci_ptr( hfci );
if (!p_fci_internal) return FALSE;
if(!fci_flush_cabinet(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)) return FALSE;
while( p_fci_internal->files_size>0 ||
p_fci_internal->placed_files_size>0 ) {
if(!fci_flush_cabinet(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)) return FALSE;
}
return TRUE;
}
/***********************************************************************
* FCIDestroy (CABINET.14)
*
* Frees a handle created by FCICreate.
* Only reason for failure would be an invalid handle.
*
* PARAMS
* hfci [I] The HFCI to free
*
* RETURNS
* TRUE for success
* FALSE for failure
*/
BOOL __cdecl FCIDestroy(HFCI hfci)
{
struct folder *folder, *folder_next;
struct file *file, *file_next;
struct data_block *block, *block_next;
FCI_Int *p_fci_internal = get_fci_ptr( hfci );
if (!p_fci_internal) return FALSE;
/* before hfci can be removed all temporary files must be closed */
/* and deleted */
p_fci_internal->magic = 0;
LIST_FOR_EACH_ENTRY_SAFE( folder, folder_next, &p_fci_internal->folders_list, struct folder, entry )
{
free_folder( p_fci_internal, folder );
}
LIST_FOR_EACH_ENTRY_SAFE( file, file_next, &p_fci_internal->files_list, struct file, entry )
{
free_file( p_fci_internal, file );
}
LIST_FOR_EACH_ENTRY_SAFE( block, block_next, &p_fci_internal->blocks_list, struct data_block, entry )
{
free_data_block( p_fci_internal, block );
}
close_temp_file( p_fci_internal, &p_fci_internal->data );
/* data in and out buffers have to be removed */
if (p_fci_internal->data_in!=NULL)
p_fci_internal->free(p_fci_internal->data_in);
if (p_fci_internal->data_out!=NULL)
p_fci_internal->free(p_fci_internal->data_out);
/* hfci can now be removed */
p_fci_internal->free(hfci);
return TRUE;
}
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