dlls/cabinet/fci.c

   1 /*
   2  * File Compression Interface
   3  *
   4  * Copyright 2002 Patrik Stridvall
   5  * Copyright 2005 Gerold Jens Wucherpfennig
   6  * Copyright 2011 Alexandre Julliard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /*
  24
  25 There is still some work to be done:
  26
  27 - unknown behaviour if files>=2GB or cabinet >=4GB
  28 - check if the maximum size for a cabinet is too small to store any data
  29 - call pfnfcignc on exactly the same position as MS FCIAddFile in every case
  30
  31 */
  32
  33 #include <assert.h>
  34 #include <stdarg.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <sys/stat.h>
  38 #include <fcntl.h>
  39 #include <zlib.h>
  40
  41 #include "windef.h"
  42 #include "winbase.h"
  43 #include "winerror.h"
  44 #include "winternl.h"
  45 #include "fci.h"
  46 #include "cabinet.h"
  47 #include "wine/list.h"
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(cabinet);
  51
  52 #ifdef WORDS_BIGENDIAN
  53 #define fci_endian_ulong(x) RtlUlongByteSwap(x)
  54 #define fci_endian_uword(x) RtlUshortByteSwap(x)
  55 #else
  56 #define fci_endian_ulong(x) (x)
  57 #define fci_endian_uword(x) (x)
  58 #endif
  59
  60
  61 typedef struct {
  62   cab_UBYTE signature[4]; /* !CAB for unfinished cabinets else MSCF */
  63   cab_ULONG reserved1;
  64   cab_ULONG cbCabinet;    /*  size of the cabinet file in bytes*/
  65   cab_ULONG reserved2;
  66   cab_ULONG coffFiles;    /* offset to first CFFILE section */
  67   cab_ULONG reserved3;
  68   cab_UBYTE versionMinor; /* 3 */
  69   cab_UBYTE versionMajor; /* 1 */
  70   cab_UWORD cFolders;     /* number of CFFOLDER entries in the cabinet*/
  71   cab_UWORD cFiles;       /* number of CFFILE entries in the cabinet*/
  72   cab_UWORD flags;        /* 1=prev cab, 2=next cabinet, 4=reserved sections*/
  73   cab_UWORD setID;        /* identification number of all cabinets in a set*/
  74   cab_UWORD iCabinet;     /* number of the cabinet in a set */
  75   /* additional area if "flags" were set*/
  76 } CFHEADER; /* minimum 36 bytes */
  77
  78 typedef struct {
  79   cab_ULONG coffCabStart; /* offset to the folder's first CFDATA section */
  80   cab_UWORD cCFData;      /* number of this folder's CFDATA sections */
  81   cab_UWORD typeCompress; /* compression type of data in CFDATA section*/
  82   /* additional area if reserve flag was set */
  83 } CFFOLDER; /* minimum 8 bytes */
  84
  85 typedef struct {
  86   cab_ULONG cbFile;          /* size of the uncompressed file in bytes */
  87   cab_ULONG uoffFolderStart; /* offset of the uncompressed file in the folder */
  88   cab_UWORD iFolder;         /* number of folder in the cabinet 0=first  */
  89                              /* for special values see below this structure*/
  90   cab_UWORD date;            /* last modification date*/
  91   cab_UWORD time;            /* last modification time*/
  92   cab_UWORD attribs;         /* DOS fat attributes and UTF indicator */
  93   /* ... and a C string with the name of the file */
  94 } CFFILE; /* 16 bytes + name of file */
  95
  96
  97 typedef struct {
  98   cab_ULONG csum;          /* checksum of this entry*/
  99   cab_UWORD cbData;        /* number of compressed bytes  */
 100   cab_UWORD cbUncomp;      /* number of bytes when data is uncompressed */
 101   /* optional reserved area */
 102   /* compressed data */
 103 } CFDATA;
 104
 105 struct temp_file
 106 {
 107     INT_PTR   handle;
 108     char      name[CB_MAX_FILENAME];
 109 };
 110
 111 struct folder
 112 {
 113     struct list      entry;
 114     struct list      files_list;
 115     struct list      blocks_list;
 116     struct temp_file data;
 117     cab_ULONG        data_start;
 118     cab_UWORD        data_count;
 119     TCOMP            compression;
 120 };
 121
 122 struct file
 123 {
 124     struct list entry;
 125     cab_ULONG   size;    /* uncompressed size */
 126     cab_ULONG   offset;  /* offset in folder */
 127     cab_UWORD   folder;  /* index of folder */
 128     cab_UWORD   date;
 129     cab_UWORD   time;
 130     cab_UWORD   attribs;
 131     char        name[1];
 132 };
 133
 134 struct data_block
 135 {
 136     struct list entry;
 137     cab_UWORD   compressed;
 138     cab_UWORD   uncompressed;
 139 };
 140
 141 typedef struct FCI_Int
 142 {
 143   unsigned int       magic;
 144   PERF               perf;
 145   PFNFCIFILEPLACED   fileplaced;
 146   PFNFCIALLOC        alloc;
 147   PFNFCIFREE         free;
 148   PFNFCIOPEN         open;
 149   PFNFCIREAD         read;
 150   PFNFCIWRITE        write;
 151   PFNFCICLOSE        close;
 152   PFNFCISEEK         seek;
 153   PFNFCIDELETE       delete;
 154   PFNFCIGETTEMPFILE  gettemp;
 155   CCAB               ccab;
 156   PCCAB              pccab;
 157   BOOL               fPrevCab;
 158   BOOL               fNextCab;
 159   BOOL               fSplitFolder;
 160   cab_ULONG          statusFolderCopied;
 161   cab_ULONG          statusFolderTotal;
 162   BOOL               fGetNextCabInVain;
 163   void               *pv;
 164   char               szPrevCab[CB_MAX_CABINET_NAME]; /* previous cabinet name */
 165   char               szPrevDisk[CB_MAX_DISK_NAME];   /* disk name of previous cabinet */
 166   unsigned char      data_in[CAB_BLOCKMAX];          /* uncompressed data blocks */
 167   unsigned char      data_out[2 * CAB_BLOCKMAX];     /* compressed data blocks */
 168   cab_UWORD          cdata_in;
 169   ULONG              cCompressedBytesInFolder;
 170   cab_UWORD          cFolders;
 171   cab_UWORD          cFiles;
 172   cab_ULONG          cDataBlocks;
 173   cab_ULONG          cbFileRemainder; /* uncompressed, yet to be written data */
 174                /* of spanned file of a spanning folder of a spanning cabinet */
 175   struct temp_file   data;
 176   BOOL               fNewPrevious;
 177   cab_ULONG          estimatedCabinetSize;
 178   struct list        folders_list;
 179   struct list        files_list;
 180   struct list        blocks_list;
 181   cab_ULONG          folders_size;
 182   cab_ULONG          files_size;          /* size of files not yet assigned to a folder */
 183   cab_ULONG          placed_files_size;   /* size of files already placed into a folder */
 184   cab_ULONG          pending_data_size;   /* size of data not yet assigned to a folder */
 185   cab_ULONG          folders_data_size;   /* total size of data contained in the current folders */
 186   TCOMP              compression;
 187   cab_UWORD        (*compress)(struct FCI_Int *);
 188 } FCI_Int;
 189
 190 #define FCI_INT_MAGIC 0xfcfcfc05
 191
 192 static void set_error( FCI_Int *fci, int oper, int err )
 193 {
 194     fci->perf->erfOper = oper;
 195     fci->perf->erfType = err;
 196     fci->perf->fError = TRUE;
 197     if (err) SetLastError( err );
 198 }
 199
 200 static FCI_Int *get_fci_ptr( HFCI hfci )
 201 {
 202     FCI_Int *fci= (FCI_Int *)hfci;
 203
 204     if (!fci || fci->magic != FCI_INT_MAGIC)
 205     {
 206         SetLastError( ERROR_INVALID_HANDLE );
 207         return NULL;
 208     }
 209     return fci;
 210 }
 211
 212 /* compute the cabinet header size */
 213 static cab_ULONG get_header_size( FCI_Int *fci )
 214 {
 215     cab_ULONG ret = sizeof(CFHEADER) + fci->ccab.cbReserveCFHeader;
 216
 217     if (fci->ccab.cbReserveCFHeader || fci->ccab.cbReserveCFFolder || fci->ccab.cbReserveCFData)
 218         ret += 4;
 219
 220     if (fci->fPrevCab)
 221         ret += strlen( fci->szPrevCab ) + 1 + strlen( fci->szPrevDisk ) + 1;
 222
 223     if (fci->fNextCab)
 224         ret += strlen( fci->pccab->szCab ) + 1 + strlen( fci->pccab->szDisk ) + 1;
 225
 226     return ret;
 227 }
 228
 229 static BOOL create_temp_file( FCI_Int *fci, struct temp_file *file )
 230 {
 231     int err;
 232
 233     if (!fci->gettemp( file->name, CB_MAX_FILENAME, fci->pv ))
 234     {
 235         set_error( fci, FCIERR_TEMP_FILE, ERROR_FUNCTION_FAILED );
 236         return FALSE;
 237     }
 238     if ((file->handle = fci->open( file->name, _O_RDWR | _O_CREAT | _O_EXCL | _O_BINARY,
 239                                    _S_IREAD | _S_IWRITE, &err, fci->pv )) == -1)
 240     {
 241         set_error( fci, FCIERR_TEMP_FILE, err );
 242         return FALSE;
 243     }
 244     return TRUE;
 245 }
 246
 247 static BOOL close_temp_file( FCI_Int *fci, struct temp_file *file )
 248 {
 249     int err;
 250
 251     if (file->handle == -1) return TRUE;
 252     if (fci->close( file->handle, &err, fci->pv ) == -1)
 253     {
 254         set_error( fci, FCIERR_TEMP_FILE, err );
 255         return FALSE;
 256     }
 257     file->handle = -1;
 258     if (fci->delete( file->name, &err, fci->pv ) == -1)
 259     {
 260         set_error( fci, FCIERR_TEMP_FILE, err );
 261         return FALSE;
 262     }
 263     return TRUE;
 264 }
 265
 266 static struct file *add_file( FCI_Int *fci, const char *filename )
 267 {
 268     unsigned int size = FIELD_OFFSET( struct file, name[strlen(filename) + 1] );
 269     struct file *file = fci->alloc( size );
 270
 271     if (!file)
 272     {
 273         set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 274         return NULL;
 275     }
 276     file->size    = 0;
 277     file->offset  = fci->cDataBlocks * CAB_BLOCKMAX + fci->cdata_in;
 278     file->folder  = fci->cFolders;
 279     file->date    = 0;
 280     file->time    = 0;
 281     file->attribs = 0;
 282     strcpy( file->name, filename );
 283     list_add_tail( &fci->files_list, &file->entry );
 284     fci->files_size += sizeof(CFFILE) + strlen(filename) + 1;
 285     return file;
 286 }
 287
 288 static struct file *copy_file( FCI_Int *fci, const struct file *orig )
 289 {
 290     unsigned int size = FIELD_OFFSET( struct file, name[strlen(orig->name) + 1] );
 291     struct file *file = fci->alloc( size );
 292
 293     if (!file)
 294     {
 295         set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 296         return NULL;
 297     }
 298     memcpy( file, orig, size );
 299     return file;
 300 }
 301
 302 static void free_file( FCI_Int *fci, struct file *file )
 303 {
 304     list_remove( &file->entry );
 305     fci->free( file );
 306 }
 307
 308 /* create a new data block for the data in fci->data_in */
 309 static BOOL add_data_block( FCI_Int *fci, PFNFCISTATUS status_callback )
 310 {
 311     int err;
 312     struct data_block *block;
 313
 314     if (!fci->cdata_in) return TRUE;
 315
 316     if (fci->data.handle == -1 && !create_temp_file( fci, &fci->data )) return FALSE;
 317
 318     if (!(block = fci->alloc( sizeof(*block) )))
 319     {
 320         set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 321         return FALSE;
 322     }
 323     block->uncompressed = fci->cdata_in;
 324     block->compressed   = fci->compress( fci );
 325
 326     if (fci->write( fci->data.handle, fci->data_out,
 327                     block->compressed, &err, fci->pv ) != block->compressed)
 328     {
 329         set_error( fci, FCIERR_TEMP_FILE, err );
 330         fci->free( block );
 331         return FALSE;
 332     }
 333
 334     fci->cdata_in = 0;
 335     fci->pending_data_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + block->compressed;
 336     fci->cCompressedBytesInFolder += block->compressed;
 337     fci->cDataBlocks++;
 338     list_add_tail( &fci->blocks_list, &block->entry );
 339
 340     if (status_callback( statusFile, block->compressed, block->uncompressed, fci->pv ) == -1)
 341     {
 342         set_error( fci, FCIERR_USER_ABORT, 0 );
 343         return FALSE;
 344     }
 345     return TRUE;
 346 }
 347
 348 /* add compressed blocks for all the data that can be read from the file */
 349 static BOOL add_file_data( FCI_Int *fci, char *sourcefile, char *filename, BOOL execute,
 350                            PFNFCIGETOPENINFO get_open_info, PFNFCISTATUS status_callback )
 351 {
 352     int err, len;
 353     INT_PTR handle;
 354     struct file *file;
 355
 356     if (!(file = add_file( fci, filename ))) return FALSE;
 357
 358     handle = get_open_info( sourcefile, &file->date, &file->time, &file->attribs, &err, fci->pv );
 359     if (handle == -1)
 360     {
 361         free_file( fci, file );
 362         set_error( fci, FCIERR_OPEN_SRC, err );
 363         return FALSE;
 364     }
 365     if (execute) file->attribs |= _A_EXEC;
 366
 367     for (;;)
 368     {
 369         len = fci->read( handle, fci->data_in + fci->cdata_in,
 370                          CAB_BLOCKMAX - fci->cdata_in, &err, fci->pv );
 371         if (!len) break;
 372
 373         if (len == -1)
 374         {
 375             set_error( fci, FCIERR_READ_SRC, err );
 376             return FALSE;
 377         }
 378         file->size += len;
 379         fci->cdata_in += len;
 380         if (fci->cdata_in == CAB_BLOCKMAX && !add_data_block( fci, status_callback )) return FALSE;
 381     }
 382     fci->close( handle, &err, fci->pv );
 383     return TRUE;
 384 }
 385
 386 static void free_data_block( FCI_Int *fci, struct data_block *block )
 387 {
 388     list_remove( &block->entry );
 389     fci->free( block );
 390 }
 391
 392 static struct folder *add_folder( FCI_Int *fci )
 393 {
 394     struct folder *folder = fci->alloc( sizeof(*folder) );
 395
 396     if (!folder)
 397     {
 398         set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 399         return NULL;
 400     }
 401     folder->data.handle = -1;
 402     folder->data_start  = fci->folders_data_size;
 403     folder->data_count  = 0;
 404     folder->compression = fci->compression;
 405     list_init( &folder->files_list );
 406     list_init( &folder->blocks_list );
 407     list_add_tail( &fci->folders_list, &folder->entry );
 408     fci->folders_size += sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder;
 409     fci->cFolders++;
 410     return folder;
 411 }
 412
 413 static void free_folder( FCI_Int *fci, struct folder *folder )
 414 {
 415     struct file *file, *file_next;
 416     struct data_block *block, *block_next;
 417
 418     LIST_FOR_EACH_ENTRY_SAFE( file, file_next, &folder->files_list, struct file, entry )
 419         free_file( fci, file );
 420     LIST_FOR_EACH_ENTRY_SAFE( block, block_next, &folder->blocks_list, struct data_block, entry )
 421         free_data_block( fci, block );
 422     close_temp_file( fci, &folder->data );
 423     list_remove( &folder->entry );
 424     fci->free( folder );
 425 }
 426
 427 /* reset state for the next cabinet file once the current one has been flushed */
 428 static void reset_cabinet( FCI_Int *fci )
 429 {
 430     struct folder *folder, *folder_next;
 431
 432     LIST_FOR_EACH_ENTRY_SAFE( folder, folder_next, &fci->folders_list, struct folder, entry )
 433         free_folder( fci, folder );
 434
 435     fci->cFolders          = 0;
 436     fci->cFiles            = 0;
 437     fci->folders_size      = 0;
 438     fci->placed_files_size = 0;
 439     fci->folders_data_size = 0;
 440 }
 441
 442 static cab_ULONG fci_get_checksum( const void *pv, UINT cb, cab_ULONG seed )
 443 {
 444   cab_ULONG     csum;
 445   cab_ULONG     ul;
 446   int           cUlong;
 447   const BYTE    *pb;
 448
 449   csum = seed;
 450   cUlong = cb / 4;
 451   pb = pv;
 452
 453   while (cUlong-- > 0) {
 454     ul = *pb++;
 455     ul |= (((cab_ULONG)(*pb++)) <<  8);
 456     ul |= (((cab_ULONG)(*pb++)) << 16);
 457     ul |= (((cab_ULONG)(*pb++)) << 24);
 458     csum ^= ul;
 459   }
 460
 461   ul = 0;
 462   switch (cb % 4) {
 463     case 3:
 464       ul |= (((ULONG)(*pb++)) << 16);
 465       /* fall through */
 466     case 2:
 467       ul |= (((ULONG)(*pb++)) <<  8);
 468       /* fall through */
 469     case 1:
 470       ul |= *pb;
 471       /* fall through */
 472     default:
 473       break;
 474   }
 475   csum ^= ul;
 476
 477   return csum;
 478 }
 479
 480 /* copy all remaining data block to a new temp file */
 481 static BOOL copy_data_blocks( FCI_Int *fci, INT_PTR handle, cab_ULONG start_pos,
 482                               struct temp_file *temp, PFNFCISTATUS status_callback )
 483 {
 484     struct data_block *block;
 485     int err;
 486
 487     if (fci->seek( handle, start_pos, SEEK_SET, &err, fci->pv ) != start_pos)
 488     {
 489         set_error( fci, FCIERR_TEMP_FILE, err );
 490         return FALSE;
 491     }
 492     if (!create_temp_file( fci, temp )) return FALSE;
 493
 494     LIST_FOR_EACH_ENTRY( block, &fci->blocks_list, struct data_block, entry )
 495     {
 496         if (fci->read( handle, fci->data_out, block->compressed,
 497                        &err, fci->pv ) != block->compressed)
 498         {
 499             close_temp_file( fci, temp );
 500             set_error( fci, FCIERR_TEMP_FILE, err );
 501             return FALSE;
 502         }
 503         if (fci->write( temp->handle, fci->data_out, block->compressed,
 504                         &err, fci->pv ) != block->compressed)
 505         {
 506             close_temp_file( fci, temp );
 507             set_error( fci, FCIERR_TEMP_FILE, err );
 508             return FALSE;
 509         }
 510         fci->pending_data_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + block->compressed;
 511         fci->statusFolderCopied += block->compressed;
 512
 513         if (status_callback( statusFolder, fci->statusFolderCopied,
 514                              fci->statusFolderTotal, fci->pv) == -1)
 515         {
 516             close_temp_file( fci, temp );
 517             set_error( fci, FCIERR_USER_ABORT, 0 );
 518             return FALSE;
 519         }
 520     }
 521     return TRUE;
 522 }
 523
 524 /* write all folders to disk and remove them from the list */
 525 static BOOL write_folders( FCI_Int *fci, INT_PTR handle, cab_ULONG header_size, PFNFCISTATUS status_callback )
 526 {
 527     struct folder *folder;
 528     int err;
 529     CFFOLDER *cffolder = (CFFOLDER *)fci->data_out;
 530     cab_ULONG folder_size = sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder;
 531
 532     memset( cffolder, 0, folder_size );
 533
 534     /* write the folders */
 535     LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
 536     {
 537         cffolder->coffCabStart = fci_endian_ulong( folder->data_start + header_size );
 538         cffolder->cCFData      = fci_endian_uword( folder->data_count );
 539         cffolder->typeCompress = fci_endian_uword( folder->compression );
 540         if (fci->write( handle, cffolder, folder_size, &err, fci->pv ) != folder_size)
 541         {
 542             set_error( fci, FCIERR_CAB_FILE, err );
 543             return FALSE;
 544         }
 545     }
 546     return TRUE;
 547 }
 548
 549 /* write all the files to the cabinet file */
 550 static BOOL write_files( FCI_Int *fci, INT_PTR handle, PFNFCISTATUS status_callback )
 551 {
 552     cab_ULONG file_size;
 553     struct folder *folder;
 554     struct file *file;
 555     int err;
 556     CFFILE *cffile = (CFFILE *)fci->data_out;
 557
 558     LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
 559     {
 560         LIST_FOR_EACH_ENTRY( file, &folder->files_list, struct file, entry )
 561         {
 562             cffile->cbFile          = fci_endian_ulong( file->size );
 563             cffile->uoffFolderStart = fci_endian_ulong( file->offset );
 564             cffile->iFolder         = fci_endian_uword( file->folder );
 565             cffile->date            = fci_endian_uword( file->date );
 566             cffile->time            = fci_endian_uword( file->time );
 567             cffile->attribs         = fci_endian_uword( file->attribs );
 568             lstrcpynA( (char *)(cffile + 1), file->name, CB_MAX_FILENAME );
 569             file_size = sizeof(CFFILE) + strlen( (char *)(cffile + 1) ) + 1;
 570             if (fci->write( handle, cffile, file_size, &err, fci->pv ) != file_size)
 571             {
 572                 set_error( fci, FCIERR_CAB_FILE, err );
 573                 return FALSE;
 574             }
 575             if (!fci->fSplitFolder)
 576             {
 577                 fci->statusFolderCopied = 0;
 578                 /* TODO TEST THIS further */
 579                 fci->statusFolderTotal = fci->folders_data_size + fci->placed_files_size;
 580             }
 581             fci->statusFolderCopied += file_size;
 582             /* report status about copied size of folder */
 583             if (status_callback( statusFolder, fci->statusFolderCopied,
 584                                  fci->statusFolderTotal, fci->pv ) == -1)
 585             {
 586                 set_error( fci, FCIERR_USER_ABORT, 0 );
 587                 return FALSE;
 588             }
 589         }
 590     }
 591     return TRUE;
 592 }
 593
 594 /* write all data blocks to the cabinet file */
 595 static BOOL write_data_blocks( FCI_Int *fci, INT_PTR handle, PFNFCISTATUS status_callback )
 596 {
 597     struct folder *folder;
 598     struct data_block *block;
 599     int err, len;
 600     CFDATA *cfdata;
 601     void *data;
 602     cab_UWORD header_size;
 603
 604     header_size = sizeof(CFDATA) + fci->ccab.cbReserveCFData;
 605     cfdata = (CFDATA *)fci->data_out;
 606     memset( cfdata, 0, header_size );
 607     data = (char *)cfdata + header_size;
 608
 609     LIST_FOR_EACH_ENTRY( folder, &fci->folders_list, struct folder, entry )
 610     {
 611         if (fci->seek( folder->data.handle, 0, SEEK_SET, &err, fci->pv ) != 0)
 612         {
 613             set_error( fci, FCIERR_CAB_FILE, err );
 614             return FALSE;
 615         }
 616         LIST_FOR_EACH_ENTRY( block, &folder->blocks_list, struct data_block, entry )
 617         {
 618             len = fci->read( folder->data.handle, data, block->compressed, &err, fci->pv );
 619             if (len != block->compressed) return FALSE;
 620
 621             cfdata->cbData = fci_endian_uword( block->compressed );
 622             cfdata->cbUncomp = fci_endian_uword( block->uncompressed );
 623             cfdata->csum = fci_endian_ulong( fci_get_checksum( &cfdata->cbData,
 624                                                                header_size - FIELD_OFFSET(CFDATA, cbData),
 625                                                                fci_get_checksum( data, len, 0 )));
 626
 627             fci->statusFolderCopied += len;
 628             len += header_size;
 629             if (fci->write( handle, fci->data_out, len, &err, fci->pv ) != len)
 630             {
 631                 set_error( fci, FCIERR_CAB_FILE, err );
 632                 return FALSE;
 633             }
 634             if (status_callback( statusFolder, fci->statusFolderCopied, fci->statusFolderTotal, fci->pv) == -1)
 635             {
 636                 set_error( fci, FCIERR_USER_ABORT, 0 );
 637                 return FALSE;
 638             }
 639         }
 640     }
 641     return TRUE;
 642 }
 643
 644 /* write the cabinet file to disk */
 645 static BOOL write_cabinet( FCI_Int *fci, PFNFCISTATUS status_callback )
 646 {
 647     char filename[CB_MAX_CAB_PATH + CB_MAX_CABINET_NAME];
 648     int err;
 649     char *ptr;
 650     INT_PTR handle;
 651     CFHEADER *cfheader = (CFHEADER *)fci->data_out;
 652     cab_UWORD flags = 0;
 653     cab_ULONG header_size = get_header_size( fci );
 654     cab_ULONG total_size = header_size + fci->folders_size +
 655                            fci->placed_files_size + fci->folders_data_size;
 656
 657     assert( header_size <= sizeof(fci->data_out) );
 658     memset( cfheader, 0, header_size );
 659
 660     if (fci->fPrevCab) flags |= cfheadPREV_CABINET;
 661     if (fci->fNextCab) flags |= cfheadNEXT_CABINET;
 662     if (fci->ccab.cbReserveCFHeader || fci->ccab.cbReserveCFFolder || fci->ccab.cbReserveCFData)
 663       flags |= cfheadRESERVE_PRESENT;
 664
 665     memcpy( cfheader->signature, "!CAB", 4 );
 666     cfheader->cbCabinet    = fci_endian_ulong( total_size );
 667     cfheader->coffFiles    = fci_endian_ulong( header_size + fci->folders_size );
 668     cfheader->versionMinor = 3;
 669     cfheader->versionMajor = 1;
 670     cfheader->cFolders     = fci_endian_uword( fci->cFolders );
 671     cfheader->cFiles       = fci_endian_uword( fci->cFiles );
 672     cfheader->flags        = fci_endian_uword( flags );
 673     cfheader->setID        = fci_endian_uword( fci->ccab.setID );
 674     cfheader->iCabinet     = fci_endian_uword( fci->ccab.iCab );
 675     ptr = (char *)(cfheader + 1);
 676
 677     if (flags & cfheadRESERVE_PRESENT)
 678     {
 679         struct
 680         {
 681             cab_UWORD cbCFHeader;
 682             cab_UBYTE cbCFFolder;
 683             cab_UBYTE cbCFData;
 684         } *reserve = (void *)ptr;
 685
 686         reserve->cbCFHeader = fci_endian_uword( fci->ccab.cbReserveCFHeader );
 687         reserve->cbCFFolder = fci->ccab.cbReserveCFFolder;
 688         reserve->cbCFData   = fci->ccab.cbReserveCFData;
 689         ptr = (char *)(reserve + 1);
 690     }
 691     ptr += fci->ccab.cbReserveCFHeader;
 692
 693     if (flags & cfheadPREV_CABINET)
 694     {
 695         strcpy( ptr, fci->szPrevCab );
 696         ptr += strlen( ptr ) + 1;
 697         strcpy( ptr, fci->szPrevDisk );
 698         ptr += strlen( ptr ) + 1;
 699     }
 700
 701     if (flags & cfheadNEXT_CABINET)
 702     {
 703         strcpy( ptr, fci->pccab->szCab );
 704         ptr += strlen( ptr ) + 1;
 705         strcpy( ptr, fci->pccab->szDisk );
 706         ptr += strlen( ptr ) + 1;
 707     }
 708
 709     assert( ptr - (char *)cfheader == header_size );
 710
 711     strcpy( filename, fci->ccab.szCabPath );
 712     strcat( filename, fci->ccab.szCab );
 713
 714     if ((handle = fci->open( filename, _O_RDWR | _O_CREAT | _O_TRUNC | _O_BINARY,
 715                              _S_IREAD | _S_IWRITE, &err, fci->pv )) == -1)
 716     {
 717         set_error( fci, FCIERR_CAB_FILE, err );
 718         return FALSE;
 719     }
 720
 721     if (fci->write( handle, cfheader, header_size, &err, fci->pv ) != header_size)
 722     {
 723         set_error( fci, FCIERR_CAB_FILE, err );
 724         goto failed;
 725     }
 726
 727     /* add size of header size of all CFFOLDERs and size of all CFFILEs */
 728     header_size += fci->placed_files_size + fci->folders_size;
 729     if (!write_folders( fci, handle, header_size, status_callback )) goto failed;
 730     if (!write_files( fci, handle, status_callback )) goto failed;
 731     if (!write_data_blocks( fci, handle, status_callback )) goto failed;
 732
 733     /* update the signature */
 734     if (fci->seek( handle, 0, SEEK_SET, &err, fci->pv ) != 0 )
 735     {
 736         set_error( fci, FCIERR_CAB_FILE, err );
 737         goto failed;
 738     }
 739     memcpy( cfheader->signature, "MSCF", 4 );
 740     if (fci->write( handle, cfheader->signature, 4, &err, fci->pv ) != 4)
 741     {
 742         set_error( fci, FCIERR_CAB_FILE, err );
 743         goto failed;
 744     }
 745     fci->close( handle, &err, fci->pv );
 746
 747     reset_cabinet( fci );
 748     status_callback( statusCabinet, fci->estimatedCabinetSize, total_size, fci->pv );
 749     return TRUE;
 750
 751 failed:
 752     fci->close( handle, &err, fci->pv );
 753     fci->delete( filename, &err, fci->pv );
 754     return FALSE;
 755 }
 756
 757 /* add all pending data blocks folder */
 758 static BOOL add_data_to_folder( FCI_Int *fci, struct folder *folder, cab_ULONG *payload,
 759                                 PFNFCISTATUS status_callback )
 760 {
 761     struct data_block *block, *new, *next;
 762     BOOL split_block = FALSE;
 763     cab_ULONG current_size, start_pos = 0;
 764
 765     *payload = 0;
 766     current_size = get_header_size( fci ) + fci->folders_size +
 767                    fci->files_size + fci->placed_files_size + fci->folders_data_size;
 768
 769     /* move the temp file into the folder structure */
 770     folder->data = fci->data;
 771     fci->data.handle = -1;
 772     fci->pending_data_size = 0;
 773
 774     LIST_FOR_EACH_ENTRY_SAFE( block, next, &fci->blocks_list, struct data_block, entry )
 775     {
 776         /* No more CFDATA fits into the cabinet under construction */
 777         /* So don't try to store more data into it */
 778         if (fci->fNextCab && (fci->ccab.cb <= sizeof(CFDATA) + fci->ccab.cbReserveCFData +
 779                               current_size + sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder))
 780             break;
 781
 782         if (!(new = fci->alloc( sizeof(*new) )))
 783         {
 784             set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 785             return FALSE;
 786         }
 787         /* Is cabinet with new CFDATA too large? Then data block has to be split */
 788         if( fci->fNextCab &&
 789             (fci->ccab.cb < sizeof(CFDATA) + fci->ccab.cbReserveCFData +
 790              block->compressed + current_size + sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder))
 791         {
 792             /* Modify the size of the compressed data to store only a part of the */
 793             /* data block into the current cabinet. This is done to prevent */
 794             /* that the maximum cabinet size will be exceeded. The remainder */
 795             /* will be stored into the next following cabinet. */
 796
 797             new->compressed = fci->ccab.cb - (sizeof(CFDATA) + fci->ccab.cbReserveCFData + current_size +
 798                                               sizeof(CFFOLDER) + fci->ccab.cbReserveCFFolder );
 799             new->uncompressed = 0; /* on split blocks of data this is zero */
 800             block->compressed -= new->compressed;
 801             split_block = TRUE;
 802         }
 803         else
 804         {
 805             new->compressed   = block->compressed;
 806             new->uncompressed = block->uncompressed;
 807         }
 808
 809         start_pos += new->compressed;
 810         current_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + new->compressed;
 811         fci->folders_data_size += sizeof(CFDATA) + fci->ccab.cbReserveCFData + new->compressed;
 812         fci->statusFolderCopied += new->compressed;
 813         (*payload) += new->uncompressed;
 814
 815         list_add_tail( &folder->blocks_list, &new->entry );
 816         folder->data_count++;
 817
 818         /* report status with pfnfcis about copied size of folder */
 819         if (status_callback( statusFolder, fci->statusFolderCopied,
 820                              fci->statusFolderTotal, fci->pv ) == -1)
 821         {
 822             set_error( fci, FCIERR_USER_ABORT, 0 );
 823             return FALSE;
 824         }
 825         if (split_block) break;
 826         free_data_block( fci, block );
 827         fci->cDataBlocks--;
 828     }
 829
 830     if (list_empty( &fci->blocks_list )) return TRUE;
 831     return copy_data_blocks( fci, folder->data.handle, start_pos, &fci->data, status_callback );
 832 }
 833
 834 /* add all pending files to folder */
 835 static BOOL add_files_to_folder( FCI_Int *fci, struct folder *folder, cab_ULONG payload )
 836 {
 837     cab_ULONG sizeOfFiles = 0, sizeOfFilesPrev;
 838     cab_ULONG cbFileRemainder = 0;
 839     struct file *file, *next;
 840
 841     LIST_FOR_EACH_ENTRY_SAFE( file, next, &fci->files_list, struct file, entry )
 842     {
 843         cab_ULONG size = sizeof(CFFILE) + strlen(file->name) + 1;
 844
 845         /* fnfilfnfildest: placed file on cabinet */
 846         fci->fileplaced( &fci->ccab, file->name, file->size,
 847                          (file->folder == cffileCONTINUED_FROM_PREV), fci->pv );
 848
 849         sizeOfFilesPrev = sizeOfFiles;
 850         /* set complete size of all processed files */
 851         if (file->folder == cffileCONTINUED_FROM_PREV && fci->cbFileRemainder != 0)
 852         {
 853             sizeOfFiles += fci->cbFileRemainder;
 854             fci->cbFileRemainder = 0;
 855         }
 856         else sizeOfFiles += file->size;
 857
 858         /* check if spanned file fits into this cabinet folder */
 859         if (sizeOfFiles > payload)
 860         {
 861             if (file->folder == cffileCONTINUED_FROM_PREV)
 862                 file->folder = cffileCONTINUED_PREV_AND_NEXT;
 863             else
 864                 file->folder = cffileCONTINUED_TO_NEXT;
 865         }
 866
 867         list_remove( &file->entry );
 868         list_add_tail( &folder->files_list, &file->entry );
 869         fci->placed_files_size += size;
 870         fci->cFiles++;
 871
 872         /* This is only true for files which will be written into the */
 873         /* next cabinet of the spanning folder */
 874         if (sizeOfFiles > payload)
 875         {
 876             /* add a copy back onto the list */
 877             if (!(file = copy_file( fci, file ))) return FALSE;
 878             list_add_before( &next->entry, &file->entry );
 879
 880             /* Files which data will be partially written into the current cabinet */
 881             if (file->folder == cffileCONTINUED_PREV_AND_NEXT || file->folder == cffileCONTINUED_TO_NEXT)
 882             {
 883                 if (sizeOfFilesPrev <= payload)
 884                 {
 885                     /* The size of the uncompressed, data of a spanning file in a */
 886                     /* spanning data */
 887                     cbFileRemainder = sizeOfFiles - payload;
 888                 }
 889                 file->folder = cffileCONTINUED_FROM_PREV;
 890             }
 891             else file->folder = 0;
 892         }
 893         else
 894         {
 895             fci->files_size -= size;
 896         }
 897     }
 898     fci->cbFileRemainder = cbFileRemainder;
 899     return TRUE;
 900 }
 901
 902 static cab_UWORD compress_NONE( FCI_Int *fci )
 903 {
 904     memcpy( fci->data_out, fci->data_in, fci->cdata_in );
 905     return fci->cdata_in;
 906 }
 907
 908 static void *zalloc( void *opaque, unsigned int items, unsigned int size )
 909 {
 910     FCI_Int *fci = opaque;
 911     return fci->alloc( items * size );
 912 }
 913
 914 static void zfree( void *opaque, void *ptr )
 915 {
 916     FCI_Int *fci = opaque;
 917     fci->free( ptr );
 918 }
 919
 920 static cab_UWORD compress_MSZIP( FCI_Int *fci )
 921 {
 922     z_stream stream;
 923
 924     stream.zalloc = zalloc;
 925     stream.zfree  = zfree;
 926     stream.opaque = fci;
 927     if (deflateInit2( &stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY ) != Z_OK)
 928     {
 929         set_error( fci, FCIERR_ALLOC_FAIL, ERROR_NOT_ENOUGH_MEMORY );
 930         return 0;
 931     }
 932     stream.next_in   = fci->data_in;
 933     stream.avail_in  = fci->cdata_in;
 934     stream.next_out  = fci->data_out + 2;
 935     stream.avail_out = sizeof(fci->data_out) - 2;
 936     /* insert the signature */
 937     fci->data_out[0] = 'C';
 938     fci->data_out[1] = 'K';
 939     deflate( &stream, Z_FINISH );
 940     deflateEnd( &stream );
 941     return stream.total_out + 2;
 942 }
 943
 944
 945 /***********************************************************************
 946  *              FCICreate (CABINET.10)
 947  *
 948  * FCICreate is provided with several callbacks and
 949  * returns a handle which can be used to create cabinet files.
 950  *
 951  * PARAMS
 952  *   perf       [IO]  A pointer to an ERF structure.  When FCICreate
 953  *                    returns an error condition, error information may
 954  *                    be found here as well as from GetLastError.
 955  *   pfnfiledest [I]  A pointer to a function which is called when a file
 956  *                    is placed. Only useful for subsequent cabinet files.
 957  *   pfnalloc    [I]  A pointer to a function which allocates ram.  Uses
 958  *                    the same interface as malloc.
 959  *   pfnfree     [I]  A pointer to a function which frees ram.  Uses the
 960  *                    same interface as free.
 961  *   pfnopen     [I]  A pointer to a function which opens a file.  Uses
 962  *                    the same interface as _open.
 963  *   pfnread     [I]  A pointer to a function which reads from a file into
 964  *                    a caller-provided buffer.  Uses the same interface
 965  *                    as _read.
 966  *   pfnwrite    [I]  A pointer to a function which writes to a file from
 967  *                    a caller-provided buffer.  Uses the same interface
 968  *                    as _write.
 969  *   pfnclose    [I]  A pointer to a function which closes a file handle.
 970  *                    Uses the same interface as _close.
 971  *   pfnseek     [I]  A pointer to a function which seeks in a file.
 972  *                    Uses the same interface as _lseek.
 973  *   pfndelete   [I]  A pointer to a function which deletes a file.
 974  *   pfnfcigtf   [I]  A pointer to a function which gets the name of a
 975  *                    temporary file.
 976  *   pccab       [I]  A pointer to an initialized CCAB structure.
 977  *   pv          [I]  A pointer to an application-defined notification
 978  *                    function which will be passed to other FCI functions
 979  *                    as a parameter.
 980  *
 981  * RETURNS
 982  *   On success, returns an FCI handle of type HFCI.
 983  *   On failure, the NULL file handle is returned. Error
 984  *   info can be retrieved from perf.
 985  *
 986  * INCLUDES
 987  *   fci.h
 988  *
 989  */
 990 HFCI __cdecl FCICreate(
 991         PERF perf,
 992         PFNFCIFILEPLACED   pfnfiledest,
 993         PFNFCIALLOC        pfnalloc,
 994         PFNFCIFREE         pfnfree,
 995         PFNFCIOPEN         pfnopen,
 996         PFNFCIREAD         pfnread,
 997         PFNFCIWRITE        pfnwrite,
 998         PFNFCICLOSE        pfnclose,
 999         PFNFCISEEK         pfnseek,
1000         PFNFCIDELETE       pfndelete,
1001         PFNFCIGETTEMPFILE  pfnfcigtf,
1002         PCCAB              pccab,
1003         void *pv)
1004 {
1005   FCI_Int *p_fci_internal;
1006
1007   if (!perf) {
1008     SetLastError(ERROR_BAD_ARGUMENTS);
1009     return NULL;
1010   }
1011   if ((!pfnalloc) || (!pfnfree) || (!pfnopen) || (!pfnread) ||
1012       (!pfnwrite) || (!pfnclose) || (!pfnseek) || (!pfndelete) ||
1013       (!pfnfcigtf) || (!pccab)) {
1014     perf->erfOper = FCIERR_NONE;
1015     perf->erfType = ERROR_BAD_ARGUMENTS;
1016     perf->fError = TRUE;
1017
1018     SetLastError(ERROR_BAD_ARGUMENTS);
1019     return NULL;
1020   }
1021
1022   if (!((p_fci_internal = pfnalloc(sizeof(FCI_Int))))) {
1023     perf->erfOper = FCIERR_ALLOC_FAIL;
1024     perf->erfType = ERROR_NOT_ENOUGH_MEMORY;
1025     perf->fError = TRUE;
1026
1027     SetLastError(ERROR_NOT_ENOUGH_MEMORY);
1028     return NULL;
1029   }
1030
1031   memset(p_fci_internal, 0, sizeof(FCI_Int));
1032   p_fci_internal->magic = FCI_INT_MAGIC;
1033   p_fci_internal->perf = perf;
1034   p_fci_internal->fileplaced = pfnfiledest;
1035   p_fci_internal->alloc = pfnalloc;
1036   p_fci_internal->free = pfnfree;
1037   p_fci_internal->open = pfnopen;
1038   p_fci_internal->read = pfnread;
1039   p_fci_internal->write = pfnwrite;
1040   p_fci_internal->close = pfnclose;
1041   p_fci_internal->seek = pfnseek;
1042   p_fci_internal->delete = pfndelete;
1043   p_fci_internal->gettemp = pfnfcigtf;
1044   p_fci_internal->ccab = *pccab;
1045   p_fci_internal->pccab = pccab;
1046   p_fci_internal->pv = pv;
1047   p_fci_internal->data.handle = -1;
1048   p_fci_internal->compress = compress_NONE;
1049
1050   list_init( &p_fci_internal->folders_list );
1051   list_init( &p_fci_internal->files_list );
1052   list_init( &p_fci_internal->blocks_list );
1053
1054   memcpy(p_fci_internal->szPrevCab, pccab->szCab, CB_MAX_CABINET_NAME);
1055   memcpy(p_fci_internal->szPrevDisk, pccab->szDisk, CB_MAX_DISK_NAME);
1056
1057   return (HFCI)p_fci_internal;
1058 }
1059
1060
1061
1062
1063 static BOOL fci_flush_folder( FCI_Int *p_fci_internal,
1064         BOOL                  fGetNextCab,
1065         PFNFCIGETNEXTCABINET  pfnfcignc,
1066         PFNFCISTATUS          pfnfcis)
1067 {
1068   cab_ULONG payload;
1069   cab_ULONG read_result;
1070   struct folder *folder;
1071
1072   if ((!pfnfcignc) || (!pfnfcis)) {
1073     set_error( p_fci_internal, FCIERR_NONE, ERROR_BAD_ARGUMENTS );
1074     return FALSE;
1075   }
1076
1077   if( p_fci_internal->fGetNextCabInVain &&
1078       p_fci_internal->fNextCab ){
1079     /* internal error */
1080     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1081     return FALSE;
1082   }
1083
1084   /* If there was no FCIAddFile or FCIFlushFolder has already been called */
1085   /* this function will return TRUE */
1086   if( p_fci_internal->files_size == 0 ) {
1087     if ( p_fci_internal->pending_data_size != 0 ) {
1088       /* error handling */
1089       set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1090       return FALSE;
1091     }
1092     return TRUE;
1093   }
1094
1095   /* FCIFlushFolder has already been called... */
1096   if (p_fci_internal->fSplitFolder && p_fci_internal->placed_files_size!=0) {
1097     return TRUE;
1098   }
1099
1100   /* This can be set already, because it makes only a difference */
1101   /* when the current function exits with return FALSE */
1102   p_fci_internal->fSplitFolder=FALSE;
1103
1104   /* START of COPY */
1105   if (!add_data_block( p_fci_internal, pfnfcis )) return FALSE;
1106
1107   /* reset to get the number of data blocks of this folder which are */
1108   /* actually in this cabinet ( at least partially ) */
1109   p_fci_internal->cDataBlocks=0;
1110
1111   p_fci_internal->statusFolderTotal = get_header_size( p_fci_internal ) +
1112       sizeof(CFFOLDER) + p_fci_internal->ccab.cbReserveCFFolder +
1113       p_fci_internal->placed_files_size+
1114       p_fci_internal->folders_data_size + p_fci_internal->files_size+
1115       p_fci_internal->pending_data_size + p_fci_internal->folders_size;
1116   p_fci_internal->statusFolderCopied = 0;
1117
1118   /* report status with pfnfcis about copied size of folder */
1119   if( (*pfnfcis)(statusFolder, p_fci_internal->statusFolderCopied,
1120       p_fci_internal->statusFolderTotal, /* TODO total folder size */
1121       p_fci_internal->pv) == -1) {
1122     set_error( p_fci_internal, FCIERR_USER_ABORT, 0 );
1123     return FALSE;
1124   }
1125
1126   /* USE the variable read_result */
1127   read_result = get_header_size( p_fci_internal ) + p_fci_internal->folders_data_size +
1128       p_fci_internal->placed_files_size + p_fci_internal->folders_size;
1129
1130   if(p_fci_internal->files_size!=0) {
1131     read_result+= sizeof(CFFOLDER)+p_fci_internal->ccab.cbReserveCFFolder;
1132   }
1133
1134   /* Check if multiple cabinets have to be created. */
1135
1136   /* Might be too much data for the maximum allowed cabinet size.*/
1137   /* When any further data will be added later, it might not */
1138   /* be possible to flush the cabinet, because there might */
1139   /* not be enough space to store the name of the following */
1140   /* cabinet and name of the corresponding disk. */
1141   /* So take care of this and get the name of the next cabinet */
1142   if( p_fci_internal->fGetNextCabInVain==FALSE &&
1143       p_fci_internal->fNextCab==FALSE &&
1144       (
1145         (
1146           p_fci_internal->ccab.cb < read_result +
1147           p_fci_internal->pending_data_size +
1148           p_fci_internal->files_size +
1149           CB_MAX_CABINET_NAME +   /* next cabinet name */
1150           CB_MAX_DISK_NAME        /* next disk name */
1151         ) || fGetNextCab
1152       )
1153   ) {
1154     /* increment cabinet index */
1155     ++(p_fci_internal->pccab->iCab);
1156     /* get name of next cabinet */
1157     p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
1158     if (!(*pfnfcignc)(p_fci_internal->pccab,
1159         p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
1160         p_fci_internal->pv)) {
1161       set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
1162       return FALSE;
1163     }
1164
1165     /* Skip a few lines of code. This is caught by the next if. */
1166     p_fci_internal->fGetNextCabInVain=TRUE;
1167   }
1168
1169   /* too much data for cabinet */
1170   if( (p_fci_internal->fGetNextCabInVain ||
1171         p_fci_internal->fNextCab ) &&
1172       (
1173         (
1174           p_fci_internal->ccab.cb < read_result +
1175           p_fci_internal->pending_data_size +
1176           p_fci_internal->files_size +
1177           strlen(p_fci_internal->pccab->szCab)+1 +   /* next cabinet name */
1178           strlen(p_fci_internal->pccab->szDisk)+1    /* next disk name */
1179         ) || fGetNextCab
1180       )
1181   ) {
1182     p_fci_internal->fGetNextCabInVain=FALSE;
1183     p_fci_internal->fNextCab=TRUE;
1184
1185     /* return FALSE if there is not enough space left*/
1186     /* this should never happen */
1187     if (p_fci_internal->ccab.cb <=
1188         p_fci_internal->files_size +
1189         read_result +
1190         strlen(p_fci_internal->pccab->szCab)+1 + /* next cabinet name */
1191         strlen(p_fci_internal->pccab->szDisk)+1  /* next disk name */
1192     ) {
1193
1194       return FALSE;
1195     }
1196
1197     /* the folder will be split across cabinets */
1198     p_fci_internal->fSplitFolder=TRUE;
1199
1200   } else {
1201     /* this should never happen */
1202     if (p_fci_internal->fNextCab) {
1203       /* internal error */
1204       set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1205       return FALSE;
1206     }
1207   }
1208
1209   if (!(folder = add_folder( p_fci_internal ))) return FALSE;
1210   if (!add_data_to_folder( p_fci_internal, folder, &payload, pfnfcis )) return FALSE;
1211   if (!add_files_to_folder( p_fci_internal, folder, payload )) return FALSE;
1212
1213   /* reset CFFolder specific information */
1214   p_fci_internal->cDataBlocks=0;
1215   p_fci_internal->cCompressedBytesInFolder=0;
1216
1217   return TRUE;
1218 }
1219
1220
1221
1222
1223 static BOOL fci_flush_cabinet( FCI_Int *p_fci_internal,
1224         BOOL                  fGetNextCab,
1225         PFNFCIGETNEXTCABINET  pfnfcignc,
1226         PFNFCISTATUS          pfnfcis)
1227 {
1228   cab_ULONG read_result=0;
1229   BOOL returntrue=FALSE;
1230
1231   /* TODO test if fci_flush_cabinet really aborts if there was no FCIAddFile */
1232
1233   /* when FCIFlushCabinet was or FCIAddFile hasn't been called */
1234   if( p_fci_internal->files_size==0 && fGetNextCab ) {
1235     returntrue=TRUE;
1236   }
1237
1238   if (!fci_flush_folder(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)){
1239     /* TODO set error */
1240     return FALSE;
1241   }
1242
1243   if(returntrue) return TRUE;
1244
1245   if ( (p_fci_internal->fSplitFolder && p_fci_internal->fNextCab==FALSE)||
1246        (p_fci_internal->folders_size==0 &&
1247          (p_fci_internal->files_size!=0 ||
1248           p_fci_internal->placed_files_size!=0 )
1249      ) )
1250   {
1251       /* error */
1252       set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1253       return FALSE;
1254   }
1255
1256   /* create the cabinet */
1257   if (!write_cabinet( p_fci_internal, pfnfcis )) return FALSE;
1258
1259   p_fci_internal->fPrevCab=TRUE;
1260   /* The sections szPrevCab and szPrevDisk are not being updated, because */
1261   /* MS CABINET.DLL always puts the first cabinet name and disk into them */
1262
1263   if (p_fci_internal->fNextCab) {
1264     p_fci_internal->fNextCab=FALSE;
1265
1266     if (p_fci_internal->files_size==0 && p_fci_internal->pending_data_size!=0) {
1267       /* THIS CAN NEVER HAPPEN */
1268       /* set error code */
1269       set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1270       return FALSE;
1271     }
1272
1273     if( p_fci_internal->fNewPrevious ) {
1274       memcpy(p_fci_internal->szPrevCab, p_fci_internal->ccab.szCab,
1275         CB_MAX_CABINET_NAME);
1276       memcpy(p_fci_internal->szPrevDisk, p_fci_internal->ccab.szDisk,
1277         CB_MAX_DISK_NAME);
1278       p_fci_internal->fNewPrevious=FALSE;
1279     }
1280     p_fci_internal->ccab = *p_fci_internal->pccab;
1281
1282     /* REUSE the variable read_result */
1283     read_result=get_header_size( p_fci_internal );
1284     if(p_fci_internal->files_size!=0) {
1285         read_result+=p_fci_internal->ccab.cbReserveCFFolder;
1286     }
1287     read_result+= p_fci_internal->pending_data_size +
1288       p_fci_internal->files_size + p_fci_internal->folders_data_size +
1289       p_fci_internal->placed_files_size + p_fci_internal->folders_size +
1290       sizeof(CFFOLDER); /* set size of new CFFolder entry */
1291
1292     /* too much data for the maximum size of a cabinet */
1293     if( p_fci_internal->fGetNextCabInVain==FALSE &&
1294         p_fci_internal->ccab.cb < read_result ) {
1295       return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
1296     }
1297
1298     /* Might be too much data for the maximum size of a cabinet.*/
1299     /* When any further data will be added later, it might not */
1300     /* be possible to flush the cabinet, because there might */
1301     /* not be enough space to store the name of the following */
1302     /* cabinet and name of the corresponding disk. */
1303     /* So take care of this and get the name of the next cabinet */
1304     if (p_fci_internal->fGetNextCabInVain==FALSE && (
1305       p_fci_internal->ccab.cb < read_result +
1306       CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
1307     )) {
1308       /* increment cabinet index */
1309       ++(p_fci_internal->pccab->iCab);
1310       /* get name of next cabinet */
1311       p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
1312       if (!(*pfnfcignc)(p_fci_internal->pccab,
1313           p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
1314           p_fci_internal->pv)) {
1315         /* error handling */
1316         set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
1317         return FALSE;
1318       }
1319       /* Skip a few lines of code. This is caught by the next if. */
1320       p_fci_internal->fGetNextCabInVain=TRUE;
1321     }
1322
1323     /* too much data for cabinet */
1324     if (p_fci_internal->fGetNextCabInVain && (
1325         p_fci_internal->ccab.cb < read_result +
1326         strlen(p_fci_internal->ccab.szCab)+1+
1327         strlen(p_fci_internal->ccab.szDisk)+1
1328     )) {
1329       p_fci_internal->fGetNextCabInVain=FALSE;
1330       p_fci_internal->fNextCab=TRUE;
1331       return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
1332     }
1333
1334     /* if the FolderThreshold has been reached flush the folder automatically */
1335     if (p_fci_internal->cCompressedBytesInFolder >= p_fci_internal->ccab.cbFolderThresh)
1336         return fci_flush_folder(p_fci_internal, FALSE, pfnfcignc, pfnfcis);
1337
1338     if( p_fci_internal->files_size>0 ) {
1339       if( !fci_flush_folder(p_fci_internal, FALSE, pfnfcignc, pfnfcis) ) return FALSE;
1340       p_fci_internal->fNewPrevious=TRUE;
1341     }
1342   } else {
1343     p_fci_internal->fNewPrevious=FALSE;
1344     if( p_fci_internal->files_size>0 || p_fci_internal->pending_data_size) {
1345       /* THIS MAY NEVER HAPPEN */
1346       /* set error structures */
1347       set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1348       return FALSE;
1349     }
1350   }
1351
1352   return TRUE;
1353 } /* end of fci_flush_cabinet */
1354
1355
1356
1357
1358
1359 /***********************************************************************
1360  *              FCIAddFile (CABINET.11)
1361  *
1362  * FCIAddFile adds a file to the to be created cabinet file
1363  *
1364  * PARAMS
1365  *   hfci          [I]  An HFCI from FCICreate
1366  *   pszSourceFile [I]  A pointer to a C string which contains the name and
1367  *                      location of the file which will be added to the cabinet
1368  *   pszFileName   [I]  A pointer to a C string which contains the name under
1369  *                      which the file will be stored in the cabinet
1370  *   fExecute      [I]  A boolean value which indicates if the file should be
1371  *                      executed after extraction of self extracting
1372  *                      executables
1373  *   pfnfcignc     [I]  A pointer to a function which gets information about
1374  *                      the next cabinet
1375  *   pfnfcis      [IO]  A pointer to a function which will report status
1376  *                      information about the compression process
1377  *   pfnfcioi      [I]  A pointer to a function which reports file attributes
1378  *                      and time and date information
1379  *   typeCompress  [I]  Compression type
1380  *
1381  * RETURNS
1382  *   On success, returns TRUE
1383  *   On failure, returns FALSE
1384  *
1385  * INCLUDES
1386  *   fci.h
1387  *
1388  */
1389 BOOL __cdecl FCIAddFile(
1390         HFCI                  hfci,
1391         char                 *pszSourceFile,
1392         char                 *pszFileName,
1393         BOOL                  fExecute,
1394         PFNFCIGETNEXTCABINET  pfnfcignc,
1395         PFNFCISTATUS          pfnfcis,
1396         PFNFCIGETOPENINFO     pfnfcigoi,
1397         TCOMP                 typeCompress)
1398 {
1399   cab_ULONG read_result;
1400   FCI_Int *p_fci_internal = get_fci_ptr( hfci );
1401
1402   if (!p_fci_internal) return FALSE;
1403
1404   if ((!pszSourceFile) || (!pszFileName) || (!pfnfcignc) || (!pfnfcis) ||
1405       (!pfnfcigoi) || strlen(pszFileName)>=CB_MAX_FILENAME) {
1406     set_error( p_fci_internal, FCIERR_NONE, ERROR_BAD_ARGUMENTS );
1407     return FALSE;
1408   }
1409
1410   if (typeCompress != p_fci_internal->compression)
1411   {
1412       if (!FCIFlushFolder( hfci, pfnfcignc, pfnfcis )) return FALSE;
1413       switch (typeCompress)
1414       {
1415       case tcompTYPE_MSZIP:
1416           p_fci_internal->compression = tcompTYPE_MSZIP;
1417           p_fci_internal->compress    = compress_MSZIP;
1418           break;
1419       default:
1420           FIXME( "compression %x not supported, defaulting to none\n", typeCompress );
1421           /* fall through */
1422       case tcompTYPE_NONE:
1423           p_fci_internal->compression = tcompTYPE_NONE;
1424           p_fci_internal->compress    = compress_NONE;
1425           break;
1426       }
1427   }
1428
1429   /* TODO check if pszSourceFile??? */
1430
1431   if(p_fci_internal->fGetNextCabInVain && p_fci_internal->fNextCab) {
1432     /* internal error */
1433     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1434     return FALSE;
1435   }
1436
1437   if(p_fci_internal->fNextCab) {
1438     /* internal error */
1439     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1440     return FALSE;
1441   }
1442
1443   /* REUSE the variable read_result */
1444   read_result=get_header_size( p_fci_internal ) + p_fci_internal->ccab.cbReserveCFFolder;
1445
1446   read_result+= sizeof(CFFILE) + strlen(pszFileName)+1 +
1447     p_fci_internal->files_size + p_fci_internal->folders_data_size +
1448     p_fci_internal->placed_files_size + p_fci_internal->folders_size +
1449     sizeof(CFFOLDER); /* size of new CFFolder entry */
1450
1451   /* Might be too much data for the maximum size of a cabinet.*/
1452   /* When any further data will be added later, it might not */
1453   /* be possible to flush the cabinet, because there might */
1454   /* not be enough space to store the name of the following */
1455   /* cabinet and name of the corresponding disk. */
1456   /* So take care of this and get the name of the next cabinet */
1457   if( p_fci_internal->fGetNextCabInVain==FALSE &&
1458       p_fci_internal->fNextCab==FALSE &&
1459       ( p_fci_internal->ccab.cb < read_result +
1460         CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
1461       )
1462   ) {
1463     /* increment cabinet index */
1464     ++(p_fci_internal->pccab->iCab);
1465     /* get name of next cabinet */
1466     p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
1467     if (!(*pfnfcignc)(p_fci_internal->pccab,
1468         p_fci_internal->estimatedCabinetSize, /* estimated size of cab */
1469         p_fci_internal->pv)) {
1470       /* error handling */
1471       set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
1472       return FALSE;
1473     }
1474     /* Skip a few lines of code. This is caught by the next if. */
1475     p_fci_internal->fGetNextCabInVain=TRUE;
1476   }
1477
1478   if( p_fci_internal->fGetNextCabInVain &&
1479       p_fci_internal->fNextCab
1480   ) {
1481     /* THIS CAN NEVER HAPPEN */
1482     /* set error code */
1483     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1484     return FALSE;
1485   }
1486
1487   /* too much data for cabinet */
1488   if( p_fci_internal->fGetNextCabInVain &&
1489      (
1490       p_fci_internal->ccab.cb < read_result +
1491       strlen(p_fci_internal->pccab->szCab)+1+
1492       strlen(p_fci_internal->pccab->szDisk)+1
1493   )) {
1494     p_fci_internal->fGetNextCabInVain=FALSE;
1495     p_fci_internal->fNextCab=TRUE;
1496     if(!fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis)) return FALSE;
1497   }
1498
1499   if( p_fci_internal->fNextCab ) {
1500     /* THIS MAY NEVER HAPPEN */
1501     /* set error code */
1502     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1503     return FALSE;
1504   }
1505
1506   if (!add_file_data( p_fci_internal, pszSourceFile, pszFileName, fExecute, pfnfcigoi, pfnfcis ))
1507       return FALSE;
1508
1509   /* REUSE the variable read_result */
1510   read_result = get_header_size( p_fci_internal ) + p_fci_internal->ccab.cbReserveCFFolder;
1511   read_result+= p_fci_internal->pending_data_size +
1512     p_fci_internal->files_size + p_fci_internal->folders_data_size +
1513     p_fci_internal->placed_files_size + p_fci_internal->folders_size +
1514     sizeof(CFFOLDER); /* set size of new CFFolder entry */
1515
1516   /* too much data for the maximum size of a cabinet */
1517   /* (ignoring the unflushed data block) */
1518   if( p_fci_internal->fGetNextCabInVain==FALSE &&
1519       p_fci_internal->fNextCab==FALSE && /* this is always the case */
1520       p_fci_internal->ccab.cb < read_result ) {
1521     return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
1522   }
1523
1524   /* Might be too much data for the maximum size of a cabinet.*/
1525   /* When any further data will be added later, it might not */
1526   /* be possible to flush the cabinet, because there might */
1527   /* not be enough space to store the name of the following */
1528   /* cabinet and name of the corresponding disk. */
1529   /* So take care of this and get the name of the next cabinet */
1530   /* (ignoring the unflushed data block) */
1531   if( p_fci_internal->fGetNextCabInVain==FALSE &&
1532       p_fci_internal->fNextCab==FALSE &&
1533       ( p_fci_internal->ccab.cb < read_result +
1534         CB_MAX_CABINET_NAME + CB_MAX_DISK_NAME
1535       )
1536   ) {
1537     /* increment cabinet index */
1538     ++(p_fci_internal->pccab->iCab);
1539     /* get name of next cabinet */
1540     p_fci_internal->estimatedCabinetSize=p_fci_internal->statusFolderTotal;
1541     if (!(*pfnfcignc)(p_fci_internal->pccab,
1542         p_fci_internal->estimatedCabinetSize,/* estimated size of cab */
1543         p_fci_internal->pv)) {
1544       /* error handling */
1545       set_error( p_fci_internal, FCIERR_NONE, ERROR_FUNCTION_FAILED );
1546       return FALSE;
1547     }
1548     /* Skip a few lines of code. This is caught by the next if. */
1549     p_fci_internal->fGetNextCabInVain=TRUE;
1550   }
1551
1552   if( p_fci_internal->fGetNextCabInVain &&
1553       p_fci_internal->fNextCab
1554   ) {
1555     /* THIS CAN NEVER HAPPEN */
1556     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1557     return FALSE;
1558   }
1559
1560   /* too much data for cabinet */
1561   if( (p_fci_internal->fGetNextCabInVain ||
1562       p_fci_internal->fNextCab) && (
1563       p_fci_internal->ccab.cb < read_result +
1564       strlen(p_fci_internal->pccab->szCab)+1+
1565       strlen(p_fci_internal->pccab->szDisk)+1
1566   )) {
1567
1568     p_fci_internal->fGetNextCabInVain=FALSE;
1569     p_fci_internal->fNextCab=TRUE;
1570     return fci_flush_cabinet( p_fci_internal, FALSE, pfnfcignc, pfnfcis);
1571   }
1572
1573   if( p_fci_internal->fNextCab ) {
1574     /* THIS MAY NEVER HAPPEN */
1575     /* set error code */
1576     set_error( p_fci_internal, FCIERR_NONE, ERROR_GEN_FAILURE );
1577     return FALSE;
1578   }
1579
1580   /* if the FolderThreshold has been reached flush the folder automatically */
1581   if (p_fci_internal->cCompressedBytesInFolder >= p_fci_internal->ccab.cbFolderThresh)
1582       return FCIFlushFolder(hfci, pfnfcignc, pfnfcis);
1583
1584   return TRUE;
1585 } /* end of FCIAddFile */
1586
1587
1588
1589
1590
1591 /***********************************************************************
1592  *              FCIFlushFolder (CABINET.12)
1593  *
1594  * FCIFlushFolder completes the CFFolder structure under construction.
1595  *
1596  * All further data which is added by FCIAddFile will be associated to
1597  * the next CFFolder structure.
1598  *
1599  * FCIFlushFolder will be called by FCIAddFile automatically if the
1600  * threshold (stored in the member cbFolderThresh of the CCAB structure
1601  * pccab passed to FCICreate) is exceeded.
1602  *
1603  * FCIFlushFolder will be called by FCIFlushFolder automatically before
1604  * any data will be written into the cabinet file.
1605  *
1606  * PARAMS
1607  *   hfci          [I]  An HFCI from FCICreate
1608  *   pfnfcignc     [I]  A pointer to a function which gets information about
1609  *                      the next cabinet
1610  *   pfnfcis      [IO]  A pointer to a function which will report status
1611  *                      information about the compression process
1612  *
1613  * RETURNS
1614  *   On success, returns TRUE
1615  *   On failure, returns FALSE
1616  *
1617  * INCLUDES
1618  *   fci.h
1619  *
1620  */
1621 BOOL __cdecl FCIFlushFolder(
1622         HFCI                  hfci,
1623         PFNFCIGETNEXTCABINET  pfnfcignc,
1624         PFNFCISTATUS          pfnfcis)
1625 {
1626     FCI_Int *p_fci_internal = get_fci_ptr( hfci );
1627
1628     if (!p_fci_internal) return FALSE;
1629     return fci_flush_folder(p_fci_internal,FALSE,pfnfcignc,pfnfcis);
1630 }
1631
1632
1633
1634 /***********************************************************************
1635  *              FCIFlushCabinet (CABINET.13)
1636  *
1637  * FCIFlushCabinet stores the data which has been added by FCIAddFile
1638  * into the cabinet file. If the maximum cabinet size (stored in the
1639  * member cb of the CCAB structure pccab passed to FCICreate) has been
1640  * exceeded FCIFlushCabinet will be called automatic by FCIAddFile.
1641  * The remaining data still has to be flushed manually by calling
1642  * FCIFlushCabinet.
1643  *
1644  * After FCIFlushCabinet has been called (manually) FCIAddFile must
1645  * NOT be called again. Then hfci has to be released by FCIDestroy.
1646  *
1647  * PARAMS
1648  *   hfci          [I]  An HFCI from FCICreate
1649  *   fGetNextCab   [I]  Whether you want to add additional files to a
1650  *                      cabinet set (TRUE) or whether you want to
1651  *                      finalize it (FALSE)
1652  *   pfnfcignc     [I]  A pointer to a function which gets information about
1653  *                      the next cabinet
1654  *   pfnfcis      [IO]  A pointer to a function which will report status
1655  *                      information about the compression process
1656  *
1657  * RETURNS
1658  *   On success, returns TRUE
1659  *   On failure, returns FALSE
1660  *
1661  * INCLUDES
1662  *   fci.h
1663  *
1664  */
1665 BOOL __cdecl FCIFlushCabinet(
1666         HFCI                  hfci,
1667         BOOL                  fGetNextCab,
1668         PFNFCIGETNEXTCABINET  pfnfcignc,
1669         PFNFCISTATUS          pfnfcis)
1670 {
1671   FCI_Int *p_fci_internal = get_fci_ptr( hfci );
1672
1673   if (!p_fci_internal) return FALSE;
1674
1675   if(!fci_flush_cabinet(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)) return FALSE;
1676
1677   while( p_fci_internal->files_size>0 ||
1678          p_fci_internal->placed_files_size>0 ) {
1679     if(!fci_flush_cabinet(p_fci_internal,fGetNextCab,pfnfcignc,pfnfcis)) return FALSE;
1680   }
1681
1682   return TRUE;
1683 }
1684
1685
1686 /***********************************************************************
1687  *              FCIDestroy (CABINET.14)
1688  *
1689  * Frees a handle created by FCICreate.
1690  * Only reason for failure would be an invalid handle.
1691  *
1692  * PARAMS
1693  *   hfci [I] The HFCI to free
1694  *
1695  * RETURNS
1696  *   TRUE for success
1697  *   FALSE for failure
1698  */
1699 BOOL __cdecl FCIDestroy(HFCI hfci)
1700 {
1701     struct folder *folder, *folder_next;
1702     struct file *file, *file_next;
1703     struct data_block *block, *block_next;
1704     FCI_Int *p_fci_internal = get_fci_ptr( hfci );
1705
1706     if (!p_fci_internal) return FALSE;
1707
1708     /* before hfci can be removed all temporary files must be closed */
1709     /* and deleted */
1710     p_fci_internal->magic = 0;
1711
1712     LIST_FOR_EACH_ENTRY_SAFE( folder, folder_next, &p_fci_internal->folders_list, struct folder, entry )
1713     {
1714         free_folder( p_fci_internal, folder );
1715     }
1716     LIST_FOR_EACH_ENTRY_SAFE( file, file_next, &p_fci_internal->files_list, struct file, entry )
1717     {
1718         free_file( p_fci_internal, file );
1719     }
1720     LIST_FOR_EACH_ENTRY_SAFE( block, block_next, &p_fci_internal->blocks_list, struct data_block, entry )
1721     {
1722         free_data_block( p_fci_internal, block );
1723     }
1724
1725     close_temp_file( p_fci_internal, &p_fci_internal->data );
1726
1727     /* hfci can now be removed */
1728     p_fci_internal->free(hfci);
1729     return TRUE;
1730 }