receiver.c

   1 /* -*- c-file-style: "linux" -*-
   2
   3    Copyright (C) 1996-2000 by Andrew Tridgell
   4    Copyright (C) Paul Mackerras 1996
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "rsync.h"
  22
  23 extern int verbose;
  24 extern int dry_run;
  25 extern int log_before_transfer;
  26 extern int log_format_has_i;
  27 extern int daemon_log_format_has_i;
  28 extern int am_daemon;
  29 extern int am_server;
  30 extern int delete_after;
  31 extern int csum_length;
  32 extern struct stats stats;
  33 extern int read_batch;
  34 extern int batch_gen_fd;
  35 extern int protocol_version;
  36 extern int relative_paths;
  37 extern int keep_dirlinks;
  38 extern int preserve_hard_links;
  39 extern int preserve_perms;
  40 extern int io_error;
  41 extern char *tmpdir;
  42 extern char *partial_dir;
  43 extern char *basis_dir[];
  44 extern int basis_dir_cnt;
  45 extern int make_backups;
  46 extern int do_progress;
  47 extern int cleanup_got_literal;
  48 extern int module_id;
  49 extern int ignore_errors;
  50 extern int orig_umask;
  51 extern int keep_partial;
  52 extern int checksum_seed;
  53 extern int inplace;
  54 extern int delay_updates;
  55 extern char *log_format;
  56
  57 extern struct filter_list_struct server_filter_list;
  58
  59
  60 /* This deletes any files on the receiving side that are not present on the
  61  * sending side.  This is used by --delete-before and --delete-after. */
  62 void delete_files(struct file_list *flist)
  63 {
  64         char fbuf[MAXPATHLEN];
  65         int j;
  66
  67         for (j = 0; j < flist->count; j++) {
  68                 struct file_struct *file = flist->files[j];
  69
  70                 if (!(file->flags & FLAG_DEL_HERE))
  71                         continue;
  72
  73                 f_name_to(file, fbuf);
  74                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
  75                         rprintf(FINFO, "deleting in %s\n", safe_fname(fbuf));
  76
  77                 delete_in_dir(flist, fbuf, file);
  78         }
  79 }
  80
  81
  82 /*
  83  * get_tmpname() - create a tmp filename for a given filename
  84  *
  85  *   If a tmpdir is defined, use that as the directory to
  86  *   put it in.  Otherwise, the tmp filename is in the same
  87  *   directory as the given name.  Note that there may be no
  88  *   directory at all in the given name!
  89  *
  90  *   The tmp filename is basically the given filename with a
  91  *   dot prepended, and .XXXXXX appended (for mkstemp() to
  92  *   put its unique gunk in).  Take care to not exceed
  93  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
  94  *   the basename basically becomes 8 chars longer. In that
  95  *   case, the original name is shortened sufficiently to
  96  *   make it all fit.
  97  *
  98  *   Of course, there's no real reason for the tmp name to
  99  *   look like the original, except to satisfy us humans.
 100  *   As long as it's unique, rsync will work.
 101  */
 102
 103 static int get_tmpname(char *fnametmp, char *fname)
 104 {
 105         char *f;
 106         int     length = 0;
 107         int     maxname;
 108
 109         if (tmpdir) {
 110                 /* Note: this can't overflow, so the return value is safe */
 111                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
 112                 fnametmp[length++] = '/';
 113                 fnametmp[length] = '\0';        /* always NULL terminated */
 114         }
 115
 116         if ((f = strrchr(fname, '/')) != NULL) {
 117                 ++f;
 118                 if (!tmpdir) {
 119                         length = f - fname;
 120                         /* copy up to and including the slash */
 121                         strlcpy(fnametmp, fname, length + 1);
 122                 }
 123         } else
 124                 f = fname;
 125         fnametmp[length++] = '.';
 126         fnametmp[length] = '\0';                /* always NULL terminated */
 127
 128         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
 129
 130         if (maxname < 1) {
 131                 rprintf(FERROR, "temporary filename too long: %s\n",
 132                         safe_fname(fname));
 133                 fnametmp[0] = '\0';
 134                 return 0;
 135         }
 136
 137         strlcpy(fnametmp + length, f, maxname);
 138         strcat(fnametmp + length, ".XXXXXX");
 139
 140         return 1;
 141 }
 142
 143
 144 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 145                         char *fname, int fd, OFF_T total_size)
 146 {
 147         static char file_sum1[MD4_SUM_LENGTH];
 148         static char file_sum2[MD4_SUM_LENGTH];
 149         struct map_struct *mapbuf;
 150         struct sum_struct sum;
 151         int32 len;
 152         OFF_T offset = 0;
 153         OFF_T offset2;
 154         char *data;
 155         int32 i;
 156         char *map = NULL;
 157
 158         read_sum_head(f_in, &sum);
 159
 160         if (fd_r >= 0 && size_r > 0) {
 161                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 162                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 163                 if (verbose > 2) {
 164                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
 165                                 safe_fname(fname_r), (double)size_r);
 166                 }
 167         } else
 168                 mapbuf = NULL;
 169
 170         sum_init(checksum_seed);
 171
 172         while ((i = recv_token(f_in, &data)) != 0) {
 173                 if (do_progress)
 174                         show_progress(offset, total_size);
 175
 176                 if (i > 0) {
 177                         if (verbose > 3) {
 178                                 rprintf(FINFO,"data recv %d at %.0f\n",
 179                                         i,(double)offset);
 180                         }
 181
 182                         stats.literal_data += i;
 183                         cleanup_got_literal = 1;
 184
 185                         sum_update(data, i);
 186
 187                         if (fd != -1 && write_file(fd,data,i) != i)
 188                                 goto report_write_error;
 189                         offset += i;
 190                         continue;
 191                 }
 192
 193                 i = -(i+1);
 194                 offset2 = i * (OFF_T)sum.blength;
 195                 len = sum.blength;
 196                 if (i == (int)sum.count-1 && sum.remainder != 0)
 197                         len = sum.remainder;
 198
 199                 stats.matched_data += len;
 200
 201                 if (verbose > 3) {
 202                         rprintf(FINFO,
 203                                 "chunk[%d] of size %ld at %.0f offset=%.0f\n",
 204                                 i, (long)len, (double)offset2, (double)offset);
 205                 }
 206
 207                 if (mapbuf) {
 208                         map = map_ptr(mapbuf,offset2,len);
 209
 210                         see_token(map, len);
 211                         sum_update(map, len);
 212                 }
 213
 214                 if (inplace) {
 215                         if (offset == offset2 && fd != -1) {
 216                                 if (flush_write_file(fd) < 0)
 217                                         goto report_write_error;
 218                                 offset += len;
 219                                 if (do_lseek(fd, len, SEEK_CUR) != offset) {
 220                                         rsyserr(FERROR, errno,
 221                                                 "lseek failed on %s",
 222                                                 full_fname(fname));
 223                                         exit_cleanup(RERR_FILEIO);
 224                                 }
 225                                 continue;
 226                         }
 227                 }
 228                 if (fd != -1 && write_file(fd, map, len) != (int)len)
 229                         goto report_write_error;
 230                 offset += len;
 231         }
 232
 233         if (flush_write_file(fd) < 0)
 234                 goto report_write_error;
 235
 236 #ifdef HAVE_FTRUNCATE
 237         if (inplace && fd != -1)
 238                 ftruncate(fd, offset);
 239 #endif
 240
 241         if (do_progress)
 242                 end_progress(total_size);
 243
 244         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 245             report_write_error:
 246                 rsyserr(FERROR, errno, "write failed on %s",
 247                         full_fname(fname));
 248                 exit_cleanup(RERR_FILEIO);
 249         }
 250
 251         sum_end(file_sum1);
 252
 253         if (mapbuf)
 254                 unmap_file(mapbuf);
 255
 256         read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
 257         if (verbose > 2)
 258                 rprintf(FINFO,"got file_sum\n");
 259         if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
 260                 return 0;
 261         return 1;
 262 }
 263
 264
 265 static void read_gen_name(int fd, char *dirname, char *buf)
 266 {
 267         int dlen;
 268         int len = read_byte(fd);
 269
 270         if (len & 0x80) {
 271 #if MAXPATHLEN > 32767
 272                 uchar lenbuf[2];
 273                 read_buf(fd, (char *)lenbuf, 2);
 274                 len = (len & ~0x80) * 0x10000 + lenbuf[0] * 0x100 + lenbuf[1];
 275 #else
 276                 len = (len & ~0x80) * 0x100 + read_byte(fd);
 277 #endif
 278         }
 279
 280         if (dirname) {
 281                 dlen = strlcpy(buf, dirname, MAXPATHLEN);
 282                 buf[dlen++] = '/';
 283         } else
 284                 dlen = 0;
 285
 286         if (dlen + len >= MAXPATHLEN) {
 287                 rprintf(FERROR, "bogus data on generator name pipe\n");
 288                 exit_cleanup(RERR_PROTOCOL);
 289         }
 290
 291         read_sbuf(fd, buf + dlen, len);
 292 }
 293
 294
 295 static void discard_receive_data(int f_in, OFF_T length)
 296 {
 297         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 298 }
 299
 300
 301 /**
 302  * main routine for receiver process.
 303  *
 304  * Receiver process runs on the same host as the generator process. */
 305 int recv_files(int f_in, struct file_list *flist, char *local_name,
 306                int f_in_name)
 307 {
 308         int next_gen_i = -1;
 309         int fd1,fd2;
 310         STRUCT_STAT st;
 311         int iflags;
 312         char *fname, fbuf[MAXPATHLEN];
 313         char template[MAXPATHLEN];
 314         char fnametmp[MAXPATHLEN];
 315         char *fnamecmp, *partialptr;
 316         char fnamecmpbuf[MAXPATHLEN];
 317         uchar *delayed_bits = NULL;
 318         struct file_struct *file;
 319         struct stats initial_stats;
 320         int save_make_backups = make_backups;
 321         int itemizing = am_daemon ? daemon_log_format_has_i
 322                       : !am_server && log_format_has_i;
 323         int i, recv_ok, phase = 0;
 324
 325         if (verbose > 2)
 326                 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
 327
 328         if (flist->hlink_pool) {
 329                 pool_destroy(flist->hlink_pool);
 330                 flist->hlink_pool = NULL;
 331         }
 332
 333         if (delay_updates) {
 334                 int sz = (flist->count + 7) / 8;
 335                 if (!(delayed_bits = new_array(uchar, sz)))
 336                         out_of_memory("recv_files");
 337                 memset(delayed_bits, 0, sz);
 338         }
 339
 340         while (1) {
 341                 cleanup_disable();
 342
 343                 i = read_int(f_in);
 344                 if (i == -1) {
 345                         if (read_batch) {
 346                                 if (next_gen_i != flist->count) {
 347                                         do {
 348                                                 if (f_in_name >= 0
 349                                                     && next_gen_i >= 0)
 350                                                         read_byte(f_in_name);
 351                                         } while (read_int(batch_gen_fd) != -1);
 352                                 }
 353                                 next_gen_i = -1;
 354                         }
 355
 356                         if (phase)
 357                                 break;
 358
 359                         phase = 1;
 360                         csum_length = SUM_LENGTH;
 361                         if (verbose > 2)
 362                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 363                         send_msg(MSG_DONE, "", 0);
 364                         if (keep_partial && !partial_dir)
 365                                 make_backups = 0; /* prevents double backup */
 366                         continue;
 367                 }
 368
 369                 if (i < 0 || i >= flist->count) {
 370                         rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
 371                                 i, flist->count);
 372                         exit_cleanup(RERR_PROTOCOL);
 373                 }
 374
 375                 file = flist->files[i];
 376                 fname = local_name ? local_name : f_name_to(file, fbuf);
 377
 378                 if (verbose > 2)
 379                         rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
 380
 381                 if (protocol_version >= 29) {
 382                         iflags = read_shortint(f_in);
 383                         if (!(iflags & ITEM_UPDATING) || !S_ISREG(file->mode)) {
 384                                 int see_item = itemizing && (iflags || verbose > 1);
 385                                 if (am_server) {
 386                                         if (am_daemon && !dry_run && see_item)
 387                                                 log_recv(file, &stats, iflags);
 388                                 } else if (see_item || iflags & ITEM_UPDATING
 389                                     || (S_ISDIR(file->mode)
 390                                      && iflags & ITEM_REPORT_TIME))
 391                                         log_recv(file, &stats, iflags);
 392                                 continue;
 393                         }
 394                 } else
 395                         iflags = ITEM_UPDATING | ITEM_MISSING_DATA;
 396
 397                 if (!S_ISREG(file->mode)) {
 398                         rprintf(FERROR, "[%s] got index of non-regular file: %d\n",
 399                                 who_am_i(), i);
 400                         exit_cleanup(RERR_PROTOCOL);
 401                 }
 402
 403                 stats.current_file_index = i;
 404                 stats.num_transferred_files++;
 405                 stats.total_transferred_size += file->length;
 406                 cleanup_got_literal = 0;
 407
 408                 if (server_filter_list.head
 409                     && check_filter(&server_filter_list, fname, 0) < 0) {
 410                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 411                         exit_cleanup(RERR_PROTOCOL);
 412                 }
 413
 414                 if (dry_run) { /* log the transfer */
 415                         if (!am_server && log_format)
 416                                 log_recv(file, &stats, iflags);
 417                         continue;
 418                 }
 419
 420                 if (read_batch) {
 421                         while (i > next_gen_i) {
 422                                 if (f_in_name >= 0 && next_gen_i >= 0)
 423                                         read_byte(f_in_name);
 424                                 next_gen_i = read_int(batch_gen_fd);
 425                                 if (next_gen_i == -1)
 426                                         next_gen_i = flist->count;
 427                         }
 428                         if (i < next_gen_i) {
 429                                 rprintf(FINFO, "skipping update for \"%s\"\n",
 430                                         safe_fname(fname));
 431                                 discard_receive_data(f_in, file->length);
 432                                 continue;
 433                         }
 434                         next_gen_i = -1;
 435                 }
 436
 437                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 438
 439                 if (f_in_name >= 0) {
 440                         uchar j;
 441                         switch (j = read_byte(f_in_name)) {
 442                         case FNAMECMP_FNAME:
 443                                 fnamecmp = fname;
 444                                 break;
 445                         case FNAMECMP_PARTIAL_DIR:
 446                                 fnamecmp = partialptr ? partialptr : fname;
 447                                 break;
 448                         case FNAMECMP_BACKUP:
 449                                 fnamecmp = get_backup_name(fname);
 450                                 break;
 451                         case FNAMECMP_FUZZY:
 452                                 read_gen_name(f_in_name, file->dirname, fnamecmpbuf);
 453                                 fnamecmp = fnamecmpbuf;
 454                                 break;
 455                         default:
 456                                 if (j >= basis_dir_cnt) {
 457                                         rprintf(FERROR,
 458                                                 "invalid basis_dir index: %d.\n",
 459                                                 j);
 460                                         exit_cleanup(RERR_PROTOCOL);
 461                                 }
 462                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 463                                          basis_dir[j], fname);
 464                                 fnamecmp = fnamecmpbuf;
 465                                 break;
 466                         }
 467                 } else
 468                         fnamecmp = fname;
 469
 470                 initial_stats = stats;
 471
 472                 /* open the file */
 473                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 474
 475                 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 476                         rsyserr(FERROR, errno, "fstat %s failed",
 477                                 full_fname(fnamecmp));
 478                         discard_receive_data(f_in, file->length);
 479                         close(fd1);
 480                         continue;
 481                 }
 482
 483                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 484                         /* this special handling for directories
 485                          * wouldn't be necessary if robust_rename()
 486                          * and the underlying robust_unlink could cope
 487                          * with directories
 488                          */
 489                         rprintf(FERROR,"recv_files: %s is a directory\n",
 490                                 full_fname(fnamecmp));
 491                         discard_receive_data(f_in, file->length);
 492                         close(fd1);
 493                         continue;
 494                 }
 495
 496                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 497                         close(fd1);
 498                         fd1 = -1;
 499                 }
 500
 501                 if (fd1 != -1 && !preserve_perms) {
 502                         /* if the file exists already and we aren't preserving
 503                          * permissions then act as though the remote end sent
 504                          * us the file permissions we already have */
 505                         file->mode = st.st_mode;
 506                 }
 507
 508                 /* We now check to see if we are writing file "inplace" */
 509                 if (inplace)  {
 510                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0);
 511                         if (fd2 == -1) {
 512                                 rsyserr(FERROR, errno, "open %s failed",
 513                                         full_fname(fname));
 514                                 discard_receive_data(f_in, file->length);
 515                                 if (fd1 != -1)
 516                                         close(fd1);
 517                                 continue;
 518                         }
 519                 } else {
 520                         if (!get_tmpname(fnametmp,fname)) {
 521                                 discard_receive_data(f_in, file->length);
 522                                 if (fd1 != -1)
 523                                         close(fd1);
 524                                 continue;
 525                         }
 526
 527                         strlcpy(template, fnametmp, sizeof template);
 528
 529                         /* we initially set the perms without the
 530                          * setuid/setgid bits to ensure that there is no race
 531                          * condition. They are then correctly updated after
 532                          * the lchown. Thanks to snabb@epipe.fi for pointing
 533                          * this out.  We also set it initially without group
 534                          * access because of a similar race condition. */
 535                         fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 536
 537                         /* in most cases parent directories will already exist
 538                          * because their information should have been previously
 539                          * transferred, but that may not be the case with -R */
 540                         if (fd2 == -1 && relative_paths && errno == ENOENT
 541                             && create_directory_path(fnametmp, orig_umask) == 0) {
 542                                 strlcpy(fnametmp, template, sizeof fnametmp);
 543                                 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 544                         }
 545                         if (fd2 == -1) {
 546                                 rsyserr(FERROR, errno, "mkstemp %s failed",
 547                                         full_fname(fnametmp));
 548                                 discard_receive_data(f_in, file->length);
 549                                 if (fd1 != -1)
 550                                         close(fd1);
 551                                 continue;
 552                         }
 553
 554                         if (partialptr)
 555                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 556                 }
 557
 558                 /* log the transfer */
 559                 if (log_before_transfer)
 560                         log_recv(file, &initial_stats, iflags);
 561                 else if (!am_server && verbose && do_progress)
 562                         rprintf(FINFO, "%s\n", safe_fname(fname));
 563
 564                 /* recv file data */
 565                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 566                                        fname, fd2, file->length);
 567
 568                 if (!log_before_transfer)
 569                         log_recv(file, &initial_stats, iflags);
 570
 571                 if (fd1 != -1)
 572                         close(fd1);
 573                 if (close(fd2) < 0) {
 574                         rsyserr(FERROR, errno, "close failed on %s",
 575                                 full_fname(fnametmp));
 576                         exit_cleanup(RERR_FILEIO);
 577                 }
 578
 579                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 580                         finish_transfer(fname, fnametmp, file, recv_ok, 1);
 581                         if (partialptr != fname && fnamecmp == partialptr) {
 582                                 do_unlink(partialptr);
 583                                 handle_partial_dir(partialptr, PDIR_DELETE);
 584                         }
 585                 } else if (keep_partial && partialptr
 586                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
 587                         finish_transfer(partialptr, fnametmp, file, recv_ok,
 588                                         !partial_dir);
 589                         if (delay_updates && recv_ok)
 590                                 delayed_bits[i/8] |= 1 << (i % 8);
 591                 } else {
 592                         partialptr = NULL;
 593                         do_unlink(fnametmp);
 594                 }
 595
 596                 cleanup_disable();
 597
 598                 if (!recv_ok) {
 599                         int msgtype = csum_length == SUM_LENGTH || read_batch ?
 600                                 FERROR : FINFO;
 601                         if (msgtype == FERROR || verbose) {
 602                                 char *errstr, *redostr, *keptstr;
 603                                 if (!(keep_partial && partialptr) && !inplace)
 604                                         keptstr = "discarded";
 605                                 else if (partial_dir)
 606                                         keptstr = "put into partial-dir";
 607                                 else
 608                                         keptstr = "retained";
 609                                 if (msgtype == FERROR) {
 610                                         errstr = "ERROR";
 611                                         redostr = "";
 612                                 } else {
 613                                         errstr = "WARNING";
 614                                         redostr = " (will try again)";
 615                                 }
 616                                 rprintf(msgtype,
 617                                         "%s: %s failed verification -- update %s%s.\n",
 618                                         errstr, safe_fname(fname),
 619                                         keptstr, redostr);
 620                         }
 621                         if (csum_length != SUM_LENGTH) {
 622                                 char buf[4];
 623                                 SIVAL(buf, 0, i);
 624                                 send_msg(MSG_REDO, buf, 4);
 625                         }
 626                 }
 627         }
 628         make_backups = save_make_backups;
 629
 630         if (delay_updates) {
 631                 for (i = 0; i < flist->count; i++) {
 632                         struct file_struct *file = flist->files[i];
 633                         if (!file->basename
 634                          || !(delayed_bits[i/8] & (1 << (i % 8))))
 635                                 continue;
 636                         fname = local_name ? local_name : f_name(file);
 637                         partialptr = partial_dir_fname(fname);
 638                         if (partialptr) {
 639                                 if (make_backups && !make_backup(fname))
 640                                         continue;
 641                                 if (verbose > 2) {
 642                                         rprintf(FINFO, "renaming %s to %s\n",
 643                                                 safe_fname(partialptr),
 644                                                 safe_fname(fname));
 645                                 }
 646                                 if (do_rename(partialptr, fname) < 0) {
 647                                         rsyserr(FERROR, errno,
 648                                                 "rename failed for %s (from %s)",
 649                                                 full_fname(fname),
 650                                                 safe_fname(partialptr));
 651                                 } else {
 652                                         handle_partial_dir(partialptr,
 653                                                            PDIR_DELETE);
 654                                 }
 655                         }
 656                 }
 657         }
 658
 659         if (delete_after && !local_name && flist->count > 0)
 660                 delete_files(flist);
 661
 662         if (verbose > 2)
 663                 rprintf(FINFO,"recv_files finished\n");
 664
 665         return 0;
 666 }