git.maemo.org Git - drnoksnes/blob - zip.c

   1 /* zip.c -- IO on .zip files using zlib
   2    Version 1.01e, February 12th, 2005
   3
   4    27 Dec 2004 Rolf Kalbermatter
   5    Modification to zipOpen2 to support globalComment retrieval.
   6
   7    Copyright (C) 1998-2005 Gilles Vollant
   8
   9    Read zip.h for more info
  10 */
  11
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #include "zlib.h"
  18 #include "zip.h"
  19
  20 #ifdef STDC
  21 #  include <stddef.h>
  22 #  include <string.h>
  23 #  include <stdlib.h>
  24 #endif
  25 #ifdef NO_ERRNO_H
  26     extern int errno;
  27 #else
  28 #   include <errno.h>
  29 #endif
  30
  31
  32 #ifndef local
  33 #  define local static
  34 #endif
  35 /* compile with -Dlocal if your debugger can't find static symbols */
  36
  37 #ifndef VERSIONMADEBY
  38 # define VERSIONMADEBY   (0x0) /* platform depedent */
  39 #endif
  40
  41 #ifndef Z_BUFSIZE
  42 #define Z_BUFSIZE (16384)
  43 #endif
  44
  45 #ifndef Z_MAXFILENAMEINZIP
  46 #define Z_MAXFILENAMEINZIP (256)
  47 #endif
  48
  49 #ifndef ALLOC
  50 # define ALLOC(size) (malloc(size))
  51 #endif
  52 #ifndef TRYFREE
  53 # define TRYFREE(p) {if (p) free(p);}
  54 #endif
  55
  56 /*
  57 #define SIZECENTRALDIRITEM (0x2e)
  58 #define SIZEZIPLOCALHEADER (0x1e)
  59 */
  60
  61 /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
  62
  63 #ifndef SEEK_CUR
  64 #define SEEK_CUR    1
  65 #endif
  66
  67 #ifndef SEEK_END
  68 #define SEEK_END    2
  69 #endif
  70
  71 #ifndef SEEK_SET
  72 #define SEEK_SET    0
  73 #endif
  74
  75 #ifndef DEF_MEM_LEVEL
  76 #if MAX_MEM_LEVEL >= 8
  77 #  define DEF_MEM_LEVEL 8
  78 #else
  79 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  80 #endif
  81 #endif
  82 const char zip_copyright[] =
  83    " zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
  84
  85
  86 #define SIZEDATA_INDATABLOCK (4096-(4*4))
  87
  88 #define LOCALHEADERMAGIC    (0x04034b50)
  89 #define CENTRALHEADERMAGIC  (0x02014b50)
  90 #define ENDHEADERMAGIC      (0x06054b50)
  91
  92 #define FLAG_LOCALHEADER_OFFSET (0x06)
  93 #define CRC_LOCALHEADER_OFFSET  (0x0e)
  94
  95 #define SIZECENTRALHEADER (0x2e) /* 46 */
  96
  97 typedef struct linkedlist_datablock_internal_s
  98 {
  99   struct linkedlist_datablock_internal_s* next_datablock;
 100   uLong  avail_in_this_block;
 101   uLong  filled_in_this_block;
 102   uLong  unused; /* for future use and alignement */
 103   unsigned char data[SIZEDATA_INDATABLOCK];
 104 } linkedlist_datablock_internal;
 105
 106 typedef struct linkedlist_data_s
 107 {
 108     linkedlist_datablock_internal* first_block;
 109     linkedlist_datablock_internal* last_block;
 110 } linkedlist_data;
 111
 112
 113 typedef struct
 114 {
 115     z_stream stream;            /* zLib stream structure for inflate */
 116     int  stream_initialised;    /* 1 is stream is initialised */
 117     uInt pos_in_buffered_data;  /* last written byte in buffered_data */
 118
 119     uLong pos_local_header;     /* offset of the local header of the file
 120                                      currenty writing */
 121     char* central_header;       /* central header data for the current file */
 122     uLong size_centralheader;   /* size of the central header for cur file */
 123     uLong flag;                 /* flag of the file currently writing */
 124
 125     int  method;                /* compression method of file currenty wr.*/
 126     int  raw;                   /* 1 for directly writing raw data */
 127     Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
 128     uLong dosDate;
 129     uLong crc32;
 130     int  encrypt;
 131 #ifndef NOCRYPT
 132     unsigned long keys[3];     /* keys defining the pseudo-random sequence */
 133     const unsigned long* pcrc_32_tab;
 134     int crypt_header_size;
 135 #endif
 136 } curfile_info;
 137
 138 typedef struct
 139 {
 140     zlib_filefunc_def z_filefunc;
 141     voidpf filestream;        /* io structore of the zipfile */
 142     linkedlist_data central_dir;/* datablock with central dir in construction*/
 143     int  in_opened_file_inzip;  /* 1 if a file in the zip is currently writ.*/
 144     curfile_info ci;            /* info on the file curretly writing */
 145
 146     uLong begin_pos;            /* position of the beginning of the zipfile */
 147     uLong add_position_when_writting_offset;
 148     uLong number_entry;
 149 #ifndef NO_ADDFILEINEXISTINGZIP
 150     char *globalcomment;
 151 #endif
 152 } zip_internal;
 153
 154
 155
 156 #ifndef NOCRYPT
 157 #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
 158 #include "crypt.h"
 159 #endif
 160
 161 local linkedlist_datablock_internal* allocate_new_datablock()
 162 {
 163     linkedlist_datablock_internal* ldi;
 164     ldi = (linkedlist_datablock_internal*)
 165                  ALLOC(sizeof(linkedlist_datablock_internal));
 166     if (ldi!=NULL)
 167     {
 168         ldi->next_datablock = NULL ;
 169         ldi->filled_in_this_block = 0 ;
 170         ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
 171     }
 172     return ldi;
 173 }
 174
 175 local void free_datablock(ldi)
 176     linkedlist_datablock_internal* ldi;
 177 {
 178     while (ldi!=NULL)
 179     {
 180         linkedlist_datablock_internal* ldinext = ldi->next_datablock;
 181         TRYFREE(ldi);
 182         ldi = ldinext;
 183     }
 184 }
 185
 186 local void init_linkedlist(ll)
 187     linkedlist_data* ll;
 188 {
 189     ll->first_block = ll->last_block = NULL;
 190 }
 191
 192 local void free_linkedlist(ll)
 193     linkedlist_data* ll;
 194 {
 195     free_datablock(ll->first_block);
 196     ll->first_block = ll->last_block = NULL;
 197 }
 198
 199
 200 local int add_data_in_datablock(ll,buf,len)
 201     linkedlist_data* ll;
 202     const void* buf;
 203     uLong len;
 204 {
 205     linkedlist_datablock_internal* ldi;
 206     const unsigned char* from_copy;
 207
 208     if (ll==NULL)
 209         return ZIP_INTERNALERROR;
 210
 211     if (ll->last_block == NULL)
 212     {
 213         ll->first_block = ll->last_block = allocate_new_datablock();
 214         if (ll->first_block == NULL)
 215             return ZIP_INTERNALERROR;
 216     }
 217
 218     ldi = ll->last_block;
 219     from_copy = (unsigned char*)buf;
 220
 221     while (len>0)
 222     {
 223         uInt copy_this;
 224         uInt i;
 225         unsigned char* to_copy;
 226
 227         if (ldi->avail_in_this_block==0)
 228         {
 229             ldi->next_datablock = allocate_new_datablock();
 230             if (ldi->next_datablock == NULL)
 231                 return ZIP_INTERNALERROR;
 232             ldi = ldi->next_datablock ;
 233             ll->last_block = ldi;
 234         }
 235
 236         if (ldi->avail_in_this_block < len)
 237             copy_this = (uInt)ldi->avail_in_this_block;
 238         else
 239             copy_this = (uInt)len;
 240
 241         to_copy = &(ldi->data[ldi->filled_in_this_block]);
 242
 243         for (i=0;i<copy_this;i++)
 244             *(to_copy+i)=*(from_copy+i);
 245
 246         ldi->filled_in_this_block += copy_this;
 247         ldi->avail_in_this_block -= copy_this;
 248         from_copy += copy_this ;
 249         len -= copy_this;
 250     }
 251     return ZIP_OK;
 252 }
 253
 254
 255
 256 /****************************************************************************/
 257
 258 #ifndef NO_ADDFILEINEXISTINGZIP
 259 /* ===========================================================================
 260    Inputs a long in LSB order to the given file
 261    nbByte == 1, 2 or 4 (byte, short or long)
 262 */
 263
 264 local int ziplocal_putValue OF((const zlib_filefunc_def* pzlib_filefunc_def,
 265                                 voidpf filestream, uLong x, int nbByte));
 266 local int ziplocal_putValue (pzlib_filefunc_def, filestream, x, nbByte)
 267     const zlib_filefunc_def* pzlib_filefunc_def;
 268     voidpf filestream;
 269     uLong x;
 270     int nbByte;
 271 {
 272     unsigned char buf[4];
 273     int n;
 274     for (n = 0; n < nbByte; n++)
 275     {
 276         buf[n] = (unsigned char)(x & 0xff);
 277         x >>= 8;
 278     }
 279     if (x != 0)
 280       {     /* data overflow - hack for ZIP64 (X Roche) */
 281       for (n = 0; n < nbByte; n++)
 282         {
 283           buf[n] = 0xff;
 284         }
 285       }
 286
 287     if (ZWRITE(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
 288         return ZIP_ERRNO;
 289     else
 290         return ZIP_OK;
 291 }
 292
 293 local void ziplocal_putValue_inmemory OF((void* dest, uLong x, int nbByte));
 294 local void ziplocal_putValue_inmemory (dest, x, nbByte)
 295     void* dest;
 296     uLong x;
 297     int nbByte;
 298 {
 299     unsigned char* buf=(unsigned char*)dest;
 300     int n;
 301     for (n = 0; n < nbByte; n++) {
 302         buf[n] = (unsigned char)(x & 0xff);
 303         x >>= 8;
 304     }
 305
 306     if (x != 0)
 307     {     /* data overflow - hack for ZIP64 */
 308        for (n = 0; n < nbByte; n++)
 309        {
 310           buf[n] = 0xff;
 311        }
 312     }
 313 }
 314
 315 /****************************************************************************/
 316
 317
 318 local uLong ziplocal_TmzDateToDosDate(ptm,dosDate)
 319     const tm_zip* ptm;
 320     uLong dosDate;
 321 {
 322     uLong year = (uLong)ptm->tm_year;
 323     if (year>1980)
 324         year-=1980;
 325     else if (year>80)
 326         year-=80;
 327     return
 328       (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) |
 329         ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
 330 }
 331
 332
 333 /****************************************************************************/
 334
 335 local int ziplocal_getByte OF((
 336     const zlib_filefunc_def* pzlib_filefunc_def,
 337     voidpf filestream,
 338     int *pi));
 339
 340 local int ziplocal_getByte(pzlib_filefunc_def,filestream,pi)
 341     const zlib_filefunc_def* pzlib_filefunc_def;
 342     voidpf filestream;
 343     int *pi;
 344 {
 345     unsigned char c;
 346     int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
 347     if (err==1)
 348     {
 349         *pi = (int)c;
 350         return ZIP_OK;
 351     }
 352     else
 353     {
 354         if (ZERROR(*pzlib_filefunc_def,filestream))
 355             return ZIP_ERRNO;
 356         else
 357             return ZIP_EOF;
 358     }
 359 }
 360
 361
 362 /* ===========================================================================
 363    Reads a long in LSB order from the given gz_stream. Sets
 364 */
 365 local int ziplocal_getShort OF((
 366     const zlib_filefunc_def* pzlib_filefunc_def,
 367     voidpf filestream,
 368     uLong *pX));
 369
 370 local int ziplocal_getShort (pzlib_filefunc_def,filestream,pX)
 371     const zlib_filefunc_def* pzlib_filefunc_def;
 372     voidpf filestream;
 373     uLong *pX;
 374 {
 375     uLong x ;
 376     int i;
 377     int err;
 378
 379     err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 380     x = (uLong)i;
 381
 382     if (err==ZIP_OK)
 383         err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 384     x += ((uLong)i)<<8;
 385
 386     if (err==ZIP_OK)
 387         *pX = x;
 388     else
 389         *pX = 0;
 390     return err;
 391 }
 392
 393 local int ziplocal_getLong OF((
 394     const zlib_filefunc_def* pzlib_filefunc_def,
 395     voidpf filestream,
 396     uLong *pX));
 397
 398 local int ziplocal_getLong (pzlib_filefunc_def,filestream,pX)
 399     const zlib_filefunc_def* pzlib_filefunc_def;
 400     voidpf filestream;
 401     uLong *pX;
 402 {
 403     uLong x ;
 404     int i;
 405     int err;
 406
 407     err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 408     x = (uLong)i;
 409
 410     if (err==ZIP_OK)
 411         err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 412     x += ((uLong)i)<<8;
 413
 414     if (err==ZIP_OK)
 415         err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 416     x += ((uLong)i)<<16;
 417
 418     if (err==ZIP_OK)
 419         err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
 420     x += ((uLong)i)<<24;
 421
 422     if (err==ZIP_OK)
 423         *pX = x;
 424     else
 425         *pX = 0;
 426     return err;
 427 }
 428
 429 #ifndef BUFREADCOMMENT
 430 #define BUFREADCOMMENT (0x400)
 431 #endif
 432 /*
 433   Locate the Central directory of a zipfile (at the end, just before
 434     the global comment)
 435 */
 436 local uLong ziplocal_SearchCentralDir OF((
 437     const zlib_filefunc_def* pzlib_filefunc_def,
 438     voidpf filestream));
 439
 440 local uLong ziplocal_SearchCentralDir(pzlib_filefunc_def,filestream)
 441     const zlib_filefunc_def* pzlib_filefunc_def;
 442     voidpf filestream;
 443 {
 444     unsigned char* buf;
 445     uLong uSizeFile;
 446     uLong uBackRead;
 447     uLong uMaxBack=0xffff; /* maximum size of global comment */
 448     uLong uPosFound=0;
 449
 450     if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
 451         return 0;
 452
 453
 454     uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
 455
 456     if (uMaxBack>uSizeFile)
 457         uMaxBack = uSizeFile;
 458
 459     buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
 460     if (buf==NULL)
 461         return 0;
 462
 463     uBackRead = 4;
 464     while (uBackRead<uMaxBack)
 465     {
 466         uLong uReadSize,uReadPos ;
 467         int i;
 468         if (uBackRead+BUFREADCOMMENT>uMaxBack)
 469             uBackRead = uMaxBack;
 470         else
 471             uBackRead+=BUFREADCOMMENT;
 472         uReadPos = uSizeFile-uBackRead ;
 473
 474         uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
 475                      (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
 476         if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
 477             break;
 478
 479         if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
 480             break;
 481
 482         for (i=(int)uReadSize-3; (i--)>0;)
 483             if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
 484                 ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
 485             {
 486                 uPosFound = uReadPos+i;
 487                 break;
 488             }
 489
 490         if (uPosFound!=0)
 491             break;
 492     }
 493     TRYFREE(buf);
 494     return uPosFound;
 495 }
 496 #endif /* !NO_ADDFILEINEXISTINGZIP*/
 497
 498 /************************************************************/
 499 extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc_def)
 500     const char *pathname;
 501     int append;
 502     zipcharpc* globalcomment;
 503     zlib_filefunc_def* pzlib_filefunc_def;
 504 {
 505     zip_internal ziinit;
 506     zip_internal* zi;
 507     int err=ZIP_OK;
 508
 509
 510     if (pzlib_filefunc_def==NULL)
 511         fill_fopen_filefunc(&ziinit.z_filefunc);
 512     else
 513         ziinit.z_filefunc = *pzlib_filefunc_def;
 514
 515     ziinit.filestream = (*(ziinit.z_filefunc.zopen_file))
 516                  (ziinit.z_filefunc.opaque,
 517                   pathname,
 518                   (append == APPEND_STATUS_CREATE) ?
 519                   (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
 520                     (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
 521
 522     if (ziinit.filestream == NULL)
 523         return NULL;
 524     ziinit.begin_pos = ZTELL(ziinit.z_filefunc,ziinit.filestream);
 525     ziinit.in_opened_file_inzip = 0;
 526     ziinit.ci.stream_initialised = 0;
 527     ziinit.number_entry = 0;
 528     ziinit.add_position_when_writting_offset = 0;
 529     init_linkedlist(&(ziinit.central_dir));
 530
 531
 532     zi = (zip_internal*)ALLOC(sizeof(zip_internal));
 533     if (zi==NULL)
 534     {
 535         ZCLOSE(ziinit.z_filefunc,ziinit.filestream);
 536         return NULL;
 537     }
 538
 539     /* now we add file in a zipfile */
 540 #    ifndef NO_ADDFILEINEXISTINGZIP
 541     ziinit.globalcomment = NULL;
 542     if (append == APPEND_STATUS_ADDINZIP)
 543     {
 544         uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
 545
 546         uLong size_central_dir;     /* size of the central directory  */
 547         uLong offset_central_dir;   /* offset of start of central directory */
 548         uLong central_pos,uL;
 549
 550         uLong number_disk;          /* number of the current dist, used for
 551                                     spaning ZIP, unsupported, always 0*/
 552         uLong number_disk_with_CD;  /* number the the disk with central dir, used
 553                                     for spaning ZIP, unsupported, always 0*/
 554         uLong number_entry;
 555         uLong number_entry_CD;      /* total number of entries in
 556                                     the central dir
 557                                     (same than number_entry on nospan) */
 558         uLong size_comment;
 559
 560         central_pos = ziplocal_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
 561         if (central_pos==0)
 562             err=ZIP_ERRNO;
 563
 564         if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
 565                                         central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
 566             err=ZIP_ERRNO;
 567
 568         /* the signature, already checked */
 569         if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&uL)!=ZIP_OK)
 570             err=ZIP_ERRNO;
 571
 572         /* number of this disk */
 573         if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk)!=ZIP_OK)
 574             err=ZIP_ERRNO;
 575
 576         /* number of the disk with the start of the central directory */
 577         if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk_with_CD)!=ZIP_OK)
 578             err=ZIP_ERRNO;
 579
 580         /* total number of entries in the central dir on this disk */
 581         if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry)!=ZIP_OK)
 582             err=ZIP_ERRNO;
 583
 584         /* total number of entries in the central dir */
 585         if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry_CD)!=ZIP_OK)
 586             err=ZIP_ERRNO;
 587
 588         if ((number_entry_CD!=number_entry) ||
 589             (number_disk_with_CD!=0) ||
 590             (number_disk!=0))
 591             err=ZIP_BADZIPFILE;
 592
 593         /* size of the central directory */
 594         if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&size_central_dir)!=ZIP_OK)
 595             err=ZIP_ERRNO;
 596
 597         /* offset of start of central directory with respect to the
 598             starting disk number */
 599         if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&offset_central_dir)!=ZIP_OK)
 600             err=ZIP_ERRNO;
 601
 602         /* zipfile global comment length */
 603         if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&size_comment)!=ZIP_OK)
 604             err=ZIP_ERRNO;
 605
 606         if ((central_pos<offset_central_dir+size_central_dir) &&
 607             (err==ZIP_OK))
 608             err=ZIP_BADZIPFILE;
 609
 610         if (err!=ZIP_OK)
 611         {
 612             ZCLOSE(ziinit.z_filefunc, ziinit.filestream);
 613             return NULL;
 614         }
 615
 616         if (size_comment>0)
 617         {
 618             ziinit.globalcomment = ALLOC(size_comment+1);
 619             if (ziinit.globalcomment)
 620             {
 621                size_comment = ZREAD(ziinit.z_filefunc, ziinit.filestream,ziinit.globalcomment,size_comment);
 622                ziinit.globalcomment[size_comment]=0;
 623             }
 624         }
 625
 626         byte_before_the_zipfile = central_pos -
 627                                 (offset_central_dir+size_central_dir);
 628         ziinit.add_position_when_writting_offset = byte_before_the_zipfile ;
 629
 630         {
 631             uLong size_central_dir_to_read = size_central_dir;
 632             size_t buf_size = SIZEDATA_INDATABLOCK;
 633             void* buf_read = (void*)ALLOC(buf_size);
 634             if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
 635                   offset_central_dir + byte_before_the_zipfile,
 636                   ZLIB_FILEFUNC_SEEK_SET) != 0)
 637                   err=ZIP_ERRNO;
 638
 639             while ((size_central_dir_to_read>0) && (err==ZIP_OK))
 640             {
 641                 uLong read_this = SIZEDATA_INDATABLOCK;
 642                 if (read_this > size_central_dir_to_read)
 643                     read_this = size_central_dir_to_read;
 644                 if (ZREAD(ziinit.z_filefunc, ziinit.filestream,buf_read,read_this) != read_this)
 645                     err=ZIP_ERRNO;
 646
 647                 if (err==ZIP_OK)
 648                     err = add_data_in_datablock(&ziinit.central_dir,buf_read,
 649                                                 (uLong)read_this);
 650                 size_central_dir_to_read-=read_this;
 651             }
 652             TRYFREE(buf_read);
 653         }
 654         ziinit.begin_pos = byte_before_the_zipfile;
 655         ziinit.number_entry = number_entry_CD;
 656
 657         if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
 658                   offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
 659             err=ZIP_ERRNO;
 660     }
 661
 662     if (globalcomment)
 663     {
 664       *globalcomment = ziinit.globalcomment;
 665     }
 666 #    endif /* !NO_ADDFILEINEXISTINGZIP*/
 667
 668     if (err != ZIP_OK)
 669     {
 670 #    ifndef NO_ADDFILEINEXISTINGZIP
 671         TRYFREE(ziinit.globalcomment);
 672 #    endif /* !NO_ADDFILEINEXISTINGZIP*/
 673         TRYFREE(zi);
 674         return NULL;
 675     }
 676     else
 677     {
 678         *zi = ziinit;
 679         return (zipFile)zi;
 680     }
 681 }
 682
 683 extern zipFile ZEXPORT zipOpen (pathname, append)
 684     const char *pathname;
 685     int append;
 686 {
 687     return zipOpen2(pathname,append,NULL,NULL);
 688 }
 689
 690 extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
 691                                          extrafield_local, size_extrafield_local,
 692                                          extrafield_global, size_extrafield_global,
 693                                          comment, method, level, raw,
 694                                          windowBits, memLevel, strategy,
 695                                          password, crcForCrypting)
 696     zipFile file;
 697     const char* filename;
 698     const zip_fileinfo* zipfi;
 699     const void* extrafield_local;
 700     uInt size_extrafield_local;
 701     const void* extrafield_global;
 702     uInt size_extrafield_global;
 703     const char* comment;
 704     int method;
 705     int level;
 706     int raw;
 707     int windowBits;
 708     int memLevel;
 709     int strategy;
 710     const char* password;
 711     uLong crcForCrypting;
 712 {
 713     zip_internal* zi;
 714     uInt size_filename;
 715     uInt size_comment;
 716     uInt i;
 717     int err = ZIP_OK;
 718
 719 #    ifdef NOCRYPT
 720     if (password != NULL)
 721         return ZIP_PARAMERROR;
 722 #    endif
 723
 724     if (file == NULL)
 725         return ZIP_PARAMERROR;
 726     if ((method!=0) && (method!=Z_DEFLATED))
 727         return ZIP_PARAMERROR;
 728
 729     zi = (zip_internal*)file;
 730
 731     if (zi->in_opened_file_inzip == 1)
 732     {
 733         err = zipCloseFileInZip (file);
 734         if (err != ZIP_OK)
 735             return err;
 736     }
 737
 738
 739     if (filename==NULL)
 740         filename="-";
 741
 742     if (comment==NULL)
 743         size_comment = 0;
 744     else
 745         size_comment = (uInt)strlen(comment);
 746
 747     size_filename = (uInt)strlen(filename);
 748
 749     if (zipfi == NULL)
 750         zi->ci.dosDate = 0;
 751     else
 752     {
 753         if (zipfi->dosDate != 0)
 754             zi->ci.dosDate = zipfi->dosDate;
 755         else zi->ci.dosDate = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate);
 756     }
 757
 758     zi->ci.flag = 0;
 759     if ((level==8) || (level==9))
 760       zi->ci.flag |= 2;
 761     if ((level==2))
 762       zi->ci.flag |= 4;
 763     if ((level==1))
 764       zi->ci.flag |= 6;
 765     if (password != NULL)
 766       zi->ci.flag |= 1;
 767
 768     zi->ci.crc32 = 0;
 769     zi->ci.method = method;
 770     zi->ci.encrypt = 0;
 771     zi->ci.stream_initialised = 0;
 772     zi->ci.pos_in_buffered_data = 0;
 773     zi->ci.raw = raw;
 774     zi->ci.pos_local_header = ZTELL(zi->z_filefunc,zi->filestream) ;
 775     zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename +
 776                                       size_extrafield_global + size_comment;
 777     zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader);
 778
 779     ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
 780     /* version info */
 781     ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2);
 782     ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
 783     ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
 784     ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
 785     ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
 786     ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
 787     ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
 788     ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
 789     ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
 790     ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
 791     ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
 792     ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
 793
 794     if (zipfi==NULL)
 795         ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
 796     else
 797         ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
 798
 799     if (zipfi==NULL)
 800         ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
 801     else
 802         ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
 803
 804     ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header- zi->add_position_when_writting_offset,4);
 805
 806     for (i=0;i<size_filename;i++)
 807         *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
 808
 809     for (i=0;i<size_extrafield_global;i++)
 810         *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
 811               *(((const char*)extrafield_global)+i);
 812
 813     for (i=0;i<size_comment;i++)
 814         *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
 815               size_extrafield_global+i) = *(comment+i);
 816     if (zi->ci.central_header == NULL)
 817         return ZIP_INTERNALERROR;
 818
 819
 820     /* write the local header */
 821     err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC,4);
 822
 823     if (err==ZIP_OK)
 824         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
 825     if (err==ZIP_OK)
 826         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
 827
 828     if (err==ZIP_OK)
 829         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
 830
 831     if (err==ZIP_OK)
 832         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
 833
 834     if (err==ZIP_OK)
 835         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
 836     if (err==ZIP_OK)
 837         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
 838     if (err==ZIP_OK)
 839         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
 840
 841     if (err==ZIP_OK)
 842         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
 843
 844     if (err==ZIP_OK)
 845         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield_local,2);
 846
 847     if ((err==ZIP_OK) && (size_filename>0))
 848         if (ZWRITE(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
 849                 err = ZIP_ERRNO;
 850
 851     if ((err==ZIP_OK) && (size_extrafield_local>0))
 852         if (ZWRITE(zi->z_filefunc,zi->filestream,extrafield_local,size_extrafield_local)
 853                                                                            !=size_extrafield_local)
 854                 err = ZIP_ERRNO;
 855
 856     zi->ci.stream.avail_in = (uInt)0;
 857     zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
 858     zi->ci.stream.next_out = zi->ci.buffered_data;
 859     zi->ci.stream.total_in = 0;
 860     zi->ci.stream.total_out = 0;
 861
 862     if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
 863     {
 864         zi->ci.stream.zalloc = (alloc_func)0;
 865         zi->ci.stream.zfree = (free_func)0;
 866         zi->ci.stream.opaque = (voidpf)0;
 867
 868         if (windowBits>0)
 869             windowBits = -windowBits;
 870
 871         err = deflateInit2(&zi->ci.stream, level,
 872                Z_DEFLATED, windowBits, memLevel, strategy);
 873
 874         if (err==Z_OK)
 875             zi->ci.stream_initialised = 1;
 876     }
 877 #    ifndef NOCRYPT
 878     zi->ci.crypt_header_size = 0;
 879     if ((err==Z_OK) && (password != NULL))
 880     {
 881         unsigned char bufHead[RAND_HEAD_LEN];
 882         unsigned int sizeHead;
 883         zi->ci.encrypt = 1;
 884         zi->ci.pcrc_32_tab = get_crc_table();
 885         /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
 886
 887         sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
 888         zi->ci.crypt_header_size = sizeHead;
 889
 890         if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
 891                 err = ZIP_ERRNO;
 892     }
 893 #    endif
 894
 895     if (err==Z_OK)
 896         zi->in_opened_file_inzip = 1;
 897     return err;
 898 }
 899
 900 extern int ZEXPORT zipOpenNewFileInZip2(file, filename, zipfi,
 901                                         extrafield_local, size_extrafield_local,
 902                                         extrafield_global, size_extrafield_global,
 903                                         comment, method, level, raw)
 904     zipFile file;
 905     const char* filename;
 906     const zip_fileinfo* zipfi;
 907     const void* extrafield_local;
 908     uInt size_extrafield_local;
 909     const void* extrafield_global;
 910     uInt size_extrafield_global;
 911     const char* comment;
 912     int method;
 913     int level;
 914     int raw;
 915 {
 916     return zipOpenNewFileInZip3 (file, filename, zipfi,
 917                                  extrafield_local, size_extrafield_local,
 918                                  extrafield_global, size_extrafield_global,
 919                                  comment, method, level, raw,
 920                                  -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
 921                                  NULL, 0);
 922 }
 923
 924 extern int ZEXPORT zipOpenNewFileInZip (file, filename, zipfi,
 925                                         extrafield_local, size_extrafield_local,
 926                                         extrafield_global, size_extrafield_global,
 927                                         comment, method, level)
 928     zipFile file;
 929     const char* filename;
 930     const zip_fileinfo* zipfi;
 931     const void* extrafield_local;
 932     uInt size_extrafield_local;
 933     const void* extrafield_global;
 934     uInt size_extrafield_global;
 935     const char* comment;
 936     int method;
 937     int level;
 938 {
 939     return zipOpenNewFileInZip2 (file, filename, zipfi,
 940                                  extrafield_local, size_extrafield_local,
 941                                  extrafield_global, size_extrafield_global,
 942                                  comment, method, level, 0);
 943 }
 944
 945 local int zipFlushWriteBuffer(zi)
 946   zip_internal* zi;
 947 {
 948     int err=ZIP_OK;
 949
 950     if (zi->ci.encrypt != 0)
 951     {
 952 #ifndef NOCRYPT
 953         uInt i;
 954         int t;
 955         for (i=0;i<zi->ci.pos_in_buffered_data;i++)
 956             zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab,
 957                                        zi->ci.buffered_data[i],t);
 958 #endif
 959     }
 960     if (ZWRITE(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data)
 961                                                                     !=zi->ci.pos_in_buffered_data)
 962       err = ZIP_ERRNO;
 963     zi->ci.pos_in_buffered_data = 0;
 964     return err;
 965 }
 966
 967 extern int ZEXPORT zipWriteInFileInZip (file, buf, len)
 968     zipFile file;
 969     const void* buf;
 970     unsigned len;
 971 {
 972     zip_internal* zi;
 973     int err=ZIP_OK;
 974
 975     if (file == NULL)
 976         return ZIP_PARAMERROR;
 977     zi = (zip_internal*)file;
 978
 979     if (zi->in_opened_file_inzip == 0)
 980         return ZIP_PARAMERROR;
 981
 982     zi->ci.stream.next_in = (void*)buf;
 983     zi->ci.stream.avail_in = len;
 984     zi->ci.crc32 = crc32(zi->ci.crc32,buf,len);
 985
 986     while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
 987     {
 988         if (zi->ci.stream.avail_out == 0)
 989         {
 990             if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
 991                 err = ZIP_ERRNO;
 992             zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
 993             zi->ci.stream.next_out = zi->ci.buffered_data;
 994         }
 995
 996
 997         if(err != ZIP_OK)
 998             break;
 999
1000         if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1001         {
1002             uLong uTotalOutBefore = zi->ci.stream.total_out;
1003             err=deflate(&zi->ci.stream,  Z_NO_FLUSH);
1004             zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
1005
1006         }
1007         else
1008         {
1009             uInt copy_this,i;
1010             if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
1011                 copy_this = zi->ci.stream.avail_in;
1012             else
1013                 copy_this = zi->ci.stream.avail_out;
1014             for (i=0;i<copy_this;i++)
1015                 *(((char*)zi->ci.stream.next_out)+i) =
1016                     *(((const char*)zi->ci.stream.next_in)+i);
1017             {
1018                 zi->ci.stream.avail_in -= copy_this;
1019                 zi->ci.stream.avail_out-= copy_this;
1020                 zi->ci.stream.next_in+= copy_this;
1021                 zi->ci.stream.next_out+= copy_this;
1022                 zi->ci.stream.total_in+= copy_this;
1023                 zi->ci.stream.total_out+= copy_this;
1024                 zi->ci.pos_in_buffered_data += copy_this;
1025             }
1026         }
1027     }
1028     return err;
1029 }
1030
1031 extern int ZEXPORT zipCloseFileInZipRaw (file, uncompressed_size, crc32)
1032     zipFile file;
1033     uLong uncompressed_size;
1034     uLong crc32;
1035 {
1036     zip_internal* zi;
1037     uLong compressed_size;
1038     int err=ZIP_OK;
1039     if (file == NULL)
1040         return ZIP_PARAMERROR;
1041     zi = (zip_internal*)file;
1042
1043     if (zi->in_opened_file_inzip == 0)
1044         return ZIP_PARAMERROR;
1045     zi->ci.stream.avail_in = 0;
1046
1047     if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1048         while (err==ZIP_OK)
1049     {
1050         uLong uTotalOutBefore;
1051         if (zi->ci.stream.avail_out == 0)
1052         {
1053             if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
1054                 err = ZIP_ERRNO;
1055             zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
1056             zi->ci.stream.next_out = zi->ci.buffered_data;
1057         }
1058         uTotalOutBefore = zi->ci.stream.total_out;
1059         err=deflate(&zi->ci.stream,  Z_FINISH);
1060         zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
1061     }
1062
1063     if (err==Z_STREAM_END)
1064         err=ZIP_OK; /* this is normal */
1065
1066     if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
1067         if (zipFlushWriteBuffer(zi)==ZIP_ERRNO)
1068             err = ZIP_ERRNO;
1069
1070     if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1071     {
1072         err=deflateEnd(&zi->ci.stream);
1073         zi->ci.stream_initialised = 0;
1074     }
1075
1076     if (!zi->ci.raw)
1077     {
1078         crc32 = (uLong)zi->ci.crc32;
1079         uncompressed_size = (uLong)zi->ci.stream.total_in;
1080     }
1081     compressed_size = (uLong)zi->ci.stream.total_out;
1082 #    ifndef NOCRYPT
1083     compressed_size += zi->ci.crypt_header_size;
1084 #    endif
1085
1086     ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
1087     ziplocal_putValue_inmemory(zi->ci.central_header+20,
1088                                 compressed_size,4); /*compr size*/
1089     if (zi->ci.stream.data_type == Z_ASCII)
1090         ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
1091     ziplocal_putValue_inmemory(zi->ci.central_header+24,
1092                                 uncompressed_size,4); /*uncompr size*/
1093
1094     if (err==ZIP_OK)
1095         err = add_data_in_datablock(&zi->central_dir,zi->ci.central_header,
1096                                       (uLong)zi->ci.size_centralheader);
1097     free(zi->ci.central_header);
1098
1099     if (err==ZIP_OK)
1100     {
1101         long cur_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
1102         if (ZSEEK(zi->z_filefunc,zi->filestream,
1103                   zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
1104             err = ZIP_ERRNO;
1105
1106     if (err==ZIP_OK)
1107             err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
1108
1109         if (err==ZIP_OK) /* compressed size, unknown */
1110             err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
1111
1112         if (err==ZIP_OK) /* uncompressed size, unknown */
1113             err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
1114
1115         if (ZSEEK(zi->z_filefunc,zi->filestream,
1116                   cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
1117             err = ZIP_ERRNO;
1118     }
1119
1120     zi->number_entry ++;
1121     zi->in_opened_file_inzip = 0;
1122
1123     return err;
1124 }
1125
1126 extern int ZEXPORT zipCloseFileInZip (file)
1127     zipFile file;
1128 {
1129     return zipCloseFileInZipRaw (file,0,0);
1130 }
1131
1132 extern int ZEXPORT zipClose (file, global_comment)
1133     zipFile file;
1134     const char* global_comment;
1135 {
1136     zip_internal* zi;
1137     int err = 0;
1138     uLong size_centraldir = 0;
1139     uLong centraldir_pos_inzip ;
1140     uInt size_global_comment;
1141     if (file == NULL)
1142         return ZIP_PARAMERROR;
1143     zi = (zip_internal*)file;
1144
1145     if (zi->in_opened_file_inzip == 1)
1146     {
1147         err = zipCloseFileInZip (file);
1148     }
1149
1150 #ifndef NO_ADDFILEINEXISTINGZIP
1151     if (global_comment==NULL)
1152         global_comment = zi->globalcomment;
1153 #endif
1154     if (global_comment==NULL)
1155         size_global_comment = 0;
1156     else
1157         size_global_comment = (uInt)strlen(global_comment);
1158
1159     centraldir_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
1160     if (err==ZIP_OK)
1161     {
1162         linkedlist_datablock_internal* ldi = zi->central_dir.first_block ;
1163         while (ldi!=NULL)
1164         {
1165             if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
1166                 if (ZWRITE(zi->z_filefunc,zi->filestream,
1167                            ldi->data,ldi->filled_in_this_block)
1168                               !=ldi->filled_in_this_block )
1169                     err = ZIP_ERRNO;
1170
1171             size_centraldir += ldi->filled_in_this_block;
1172             ldi = ldi->next_datablock;
1173         }
1174     }
1175     free_datablock(zi->central_dir.first_block);
1176
1177     if (err==ZIP_OK) /* Magic End */
1178         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
1179
1180     if (err==ZIP_OK) /* number of this disk */
1181         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
1182
1183     if (err==ZIP_OK) /* number of the disk with the start of the central directory */
1184         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
1185
1186     if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
1187         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
1188
1189     if (err==ZIP_OK) /* total number of entries in the central dir */
1190         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
1191
1192     if (err==ZIP_OK) /* size of the central directory */
1193         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
1194
1195     if (err==ZIP_OK) /* offset of start of central directory with respect to the
1196                             starting disk number */
1197         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,
1198                                 (uLong)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4);
1199
1200     if (err==ZIP_OK) /* zipfile comment length */
1201         err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
1202
1203     if ((err==ZIP_OK) && (size_global_comment>0))
1204         if (ZWRITE(zi->z_filefunc,zi->filestream,
1205                    global_comment,size_global_comment) != size_global_comment)
1206                 err = ZIP_ERRNO;
1207
1208     if (ZCLOSE(zi->z_filefunc,zi->filestream) != 0)
1209         if (err == ZIP_OK)
1210             err = ZIP_ERRNO;
1211
1212 #ifndef NO_ADDFILEINEXISTINGZIP
1213     TRYFREE(zi->globalcomment);
1214 #endif
1215     TRYFREE(zi);
1216
1217     return err;
1218 }