options.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1998
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 /* options parsing code */
  20
  21 #include "rsync.h"
  22
  23
  24 int make_backups = 0;
  25 int whole_file = 0;
  26 int copy_links = 0;
  27 int preserve_links = 0;
  28 int preserve_hard_links = 0;
  29 int preserve_perms = 0;
  30 int preserve_devices = 0;
  31 int preserve_uid = 0;
  32 int preserve_gid = 0;
  33 int preserve_times = 0;
  34 int update_only = 0;
  35 int cvs_exclude = 0;
  36 int dry_run=0;
  37 int local_server=0;
  38 int ignore_times=0;
  39 int delete_mode=0;
  40 int one_file_system=0;
  41 int remote_version=0;
  42 int sparse_files=0;
  43 int do_compression=0;
  44 int am_root=0;
  45 int orig_umask=0;
  46 int relative_paths=0;
  47 int numeric_ids = 0;
  48 int force_delete = 0;
  49 int io_timeout = 0;
  50 int io_error = 0;
  51 int read_only = 0;
  52 int module_id = -1;
  53 int am_server = 0;
  54 int am_sender=0;
  55 int recurse = 0;
  56 int am_daemon=0;
  57 int am_client=0;
  58 int do_stats=0;
  59 int do_progress=0;
  60 int keep_partial=0;
  61 int safe_symlinks=0;
  62
  63 int block_size=BLOCK_SIZE;
  64
  65 char *backup_suffix = BACKUP_SUFFIX;
  66 char *tmpdir = NULL;
  67 char *compare_dest = NULL;
  68 char *config_file = RSYNCD_CONF;
  69 char *shell_cmd = NULL;
  70 char *log_format = NULL;
  71
  72 char *rsync_path = RSYNC_NAME;
  73 int rsync_port = RSYNC_PORT;
  74
  75 int verbose = 0;
  76 int always_checksum = 0;
  77 int list_only = 0;
  78
  79 void usage(int F)
  80 {
  81   rprintf(F,"rsync version %s Copyright Andrew Tridgell and Paul Mackerras\n\n",
  82           VERSION);
  83
  84   rprintf(F,"rsync is a file transfer program capable of efficient remote update\nvia a fast differencing algorithm.\n\n");
  85
  86   rprintf(F,"Usage: rsync [OPTION]... SRC [USER@]HOST:DEST\n");
  87   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC DEST\n");
  88   rprintf(F,"  or   rsync [OPTION]... SRC DEST\n");
  89   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
  90   rprintf(F,"  or   rsync [OPTION]... SRC [USER@]HOST::DEST\n");
  91   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
  92   rprintf(F,"\nOptions\n");
  93   rprintf(F," -v, --verbose               increase verbosity\n");
  94   rprintf(F," -c, --checksum              always checksum\n");
  95   rprintf(F," -a, --archive               archive mode\n");
  96   rprintf(F," -r, --recursive             recurse into directories\n");
  97   rprintf(F," -R, --relative              use relative path names\n");
  98   rprintf(F," -b, --backup                make backups (default ~ extension)\n");
  99   rprintf(F," -u, --update                update only (don't overwrite newer files)\n");
 100   rprintf(F," -l, --links                 preserve soft links\n");
 101   rprintf(F," -L, --copy-links            treat soft links like regular files\n");
 102   rprintf(F,"     --safe-links            ignore links outside the destination tree\n");
 103   rprintf(F," -H, --hard-links            preserve hard links\n");
 104   rprintf(F," -p, --perms                 preserve permissions\n");
 105   rprintf(F," -o, --owner                 preserve owner (root only)\n");
 106   rprintf(F," -g, --group                 preserve group\n");
 107   rprintf(F," -D, --devices               preserve devices (root only)\n");
 108   rprintf(F," -t, --times                 preserve times\n");
 109   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 110   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 111   rprintf(F," -W, --whole-file            copy whole files, no incremental checks\n");
 112   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 113   rprintf(F," -B, --block-size=SIZE       checksum blocking size\n");
 114   rprintf(F," -e, --rsh=COMMAND           specify rsh replacement\n");
 115   rprintf(F,"     --rsync-path=PATH       specify path to rsync on the remote machine\n");
 116   rprintf(F," -C, --cvs-exclude           auto ignore files in the same way CVS does\n");
 117   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 118   rprintf(F,"     --partial               keep partially transferred files\n");
 119   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 120   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 121   rprintf(F,"     --timeout=TIME          set IO timeout in seconds\n");
 122   rprintf(F," -I, --ignore-times          don't exclude files that match length and time\n");
 123   rprintf(F," -T  --temp-dir=DIR          create temporary files in directory DIR\n");
 124   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 125   rprintf(F," -z, --compress              compress file data\n");
 126   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 127   rprintf(F,"     --exclude-from=FILE     exclude patterns listed in FILE\n");
 128   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 129   rprintf(F,"     --include-from=FILE     don't exclude patterns listed in FILE\n");
 130   rprintf(F,"     --suffix=SUFFIX         override backup suffix\n");
 131   rprintf(F,"     --version               print version number\n");
 132   rprintf(F,"     --daemon                run as a rsync daemon\n");
 133   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 134   rprintf(F,"     --port=PORT             specify alternate rsyncd port number\n");
 135   rprintf(F,"     --stats                 give some file transfer stats\n");
 136   rprintf(F,"     --progress              show progress during transfer\n");
 137   rprintf(F,"     --log-format=FORMAT     log file transfers using specified format\n");
 138   rprintf(F," -h, --help                  show this help screen\n");
 139
 140   rprintf(F,"\n");
 141   rprintf(F,"the backup suffix defaults to %s\n",BACKUP_SUFFIX);
 142   rprintf(F,"the block size defaults to %d\n",BLOCK_SIZE);
 143
 144   rprintf(F,"\nPlease see the rsync(1) and rsyncd.conf(5) man pages for full documentation\n");
 145   rprintf(F,"See http://rsync.samba.org/ for updates and bug reports\n");
 146 }
 147
 148 enum {OPT_VERSION,OPT_SUFFIX,OPT_SENDER,OPT_SERVER,OPT_EXCLUDE,
 149       OPT_EXCLUDE_FROM,OPT_DELETE,OPT_NUMERIC_IDS,OPT_RSYNC_PATH,
 150       OPT_FORCE,OPT_TIMEOUT,OPT_DAEMON,OPT_CONFIG,OPT_PORT,
 151       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_STATS, OPT_PARTIAL, OPT_PROGRESS,
 152       OPT_SAFE_LINKS, OPT_COMPARE_DEST, OPT_LOG_FORMAT};
 153
 154 static char *short_options = "oblLWHpguDCtcahvrRIxnSe:B:T:z";
 155
 156 static struct option long_options[] = {
 157   {"version",     0,     0,    OPT_VERSION},
 158   {"server",      0,     0,    OPT_SERVER},
 159   {"sender",      0,     0,    OPT_SENDER},
 160   {"delete",      0,     0,    OPT_DELETE},
 161   {"force",       0,     0,    OPT_FORCE},
 162   {"numeric-ids", 0,     0,    OPT_NUMERIC_IDS},
 163   {"exclude",     1,     0,    OPT_EXCLUDE},
 164   {"exclude-from",1,     0,    OPT_EXCLUDE_FROM},
 165   {"include",     1,     0,    OPT_INCLUDE},
 166   {"include-from",1,     0,    OPT_INCLUDE_FROM},
 167   {"rsync-path",  1,     0,    OPT_RSYNC_PATH},
 168   {"one-file-system",0,  0,    'x'},
 169   {"ignore-times",0,     0,    'I'},
 170   {"help",        0,     0,    'h'},
 171   {"dry-run",     0,     0,    'n'},
 172   {"sparse",      0,     0,    'S'},
 173   {"cvs-exclude", 0,     0,    'C'},
 174   {"archive",     0,     0,    'a'},
 175   {"checksum",    0,     0,    'c'},
 176   {"backup",      0,     0,    'b'},
 177   {"update",      0,     0,    'u'},
 178   {"verbose",     0,     0,    'v'},
 179   {"recursive",   0,     0,    'r'},
 180   {"relative",    0,     0,    'R'},
 181   {"devices",     0,     0,    'D'},
 182   {"perms",       0,     0,    'p'},
 183   {"links",       0,     0,    'l'},
 184   {"copy-links",  0,     0,    'L'},
 185   {"safe-links",  0,     0,    OPT_SAFE_LINKS},
 186   {"whole-file",  0,     0,    'W'},
 187   {"hard-links",  0,     0,    'H'},
 188   {"owner",       0,     0,    'o'},
 189   {"group",       0,     0,    'g'},
 190   {"times",       0,     0,    't'},
 191   {"rsh",         1,     0,    'e'},
 192   {"suffix",      1,     0,    OPT_SUFFIX},
 193   {"block-size",  1,     0,    'B'},
 194   {"timeout",     1,     0,    OPT_TIMEOUT},
 195   {"temp-dir",    1,     0,    'T'},
 196   {"compare-dest", 1,    0,    OPT_COMPARE_DEST},
 197   {"compress",    0,     0,    'z'},
 198   {"daemon",      0,     0,    OPT_DAEMON},
 199   {"stats",       0,     0,    OPT_STATS},
 200   {"progress",    0,     0,    OPT_PROGRESS},
 201   {"partial",     0,     0,    OPT_PARTIAL},
 202   {"config",      1,     0,    OPT_CONFIG},
 203   {"port",        1,     0,    OPT_PORT},
 204   {"log-format",  1,     0,    OPT_LOG_FORMAT},
 205   {0,0,0,0}};
 206
 207
 208 static char err_buf[100];
 209
 210 void option_error(void)
 211 {
 212         if (err_buf[0]) {
 213                 rprintf(FLOG,"%s", err_buf);
 214                 rprintf(FERROR,"%s", err_buf);
 215         } else {
 216                 rprintf(FLOG,"Error parsing options - unsupported option?\n");
 217                 rprintf(FERROR,"Error parsing options - unsupported option?\n");
 218         }
 219         exit_cleanup(RERR_UNSUPPORTED);
 220 }
 221
 222 /* check to see if we should refuse this option */
 223 static int check_refuse_options(char *ref, int opt)
 224 {
 225         int i, len;
 226         char *p;
 227         const char *name;
 228
 229         for (i=0; long_options[i].name; i++) {
 230                 if (long_options[i].val == opt) break;
 231         }
 232
 233         if (!long_options[i].name) return 0;
 234
 235         name = long_options[i].name;
 236         len = strlen(name);
 237
 238         while ((p = strstr(ref,name))) {
 239                 if ((p==ref || p[-1]==' ') &&
 240                     (p[len] == ' ' || p[len] == 0)) {
 241                         if (opt == 'z') {
 242                                 /* don't actually refuse this one, just */
 243                                 /*  minimize the compression level for now */
 244                                 extern int default_compression_level;
 245                                 default_compression_level = 0;
 246                                 return 0;
 247                         }
 248                         slprintf(err_buf,sizeof(err_buf),
 249                                  "The '%s' option is not supported by this server\n", name);
 250                         return 1;
 251                 }
 252                 ref += len;
 253         }
 254         return 0;
 255 }
 256
 257
 258 int parse_arguments(int argc, char *argv[])
 259 {
 260         int opt;
 261         int option_index;
 262         char *ref = lp_refuse_options(module_id);
 263
 264         while ((opt = getopt_long(argc, argv,
 265                                   short_options, long_options, &option_index))
 266                != -1) {
 267
 268                 if (ref) {
 269                         if (check_refuse_options(ref, opt)) return 0;
 270                 }
 271
 272                 switch (opt) {
 273                 case OPT_VERSION:
 274                         rprintf(FINFO,"rsync version %s  protocol version %d\n\n",
 275                                 VERSION,PROTOCOL_VERSION);
 276                         rprintf(FINFO,"Written by Andrew Tridgell and Paul Mackerras\n");
 277                         exit_cleanup(0);
 278
 279                 case OPT_SUFFIX:
 280                         backup_suffix = optarg;
 281                         break;
 282
 283                 case OPT_RSYNC_PATH:
 284                         rsync_path = optarg;
 285                         break;
 286
 287                 case 'I':
 288                         ignore_times = 1;
 289                         break;
 290
 291                 case 'x':
 292                         one_file_system=1;
 293                         break;
 294
 295                 case OPT_DELETE:
 296                         delete_mode = 1;
 297                         break;
 298
 299                 case OPT_FORCE:
 300                         force_delete = 1;
 301                         break;
 302
 303                 case OPT_NUMERIC_IDS:
 304                         numeric_ids = 1;
 305                         break;
 306
 307                 case OPT_EXCLUDE:
 308                         add_exclude(optarg, 0);
 309                         break;
 310
 311                 case OPT_INCLUDE:
 312                         add_exclude(optarg, 1);
 313                         break;
 314
 315                 case OPT_EXCLUDE_FROM:
 316                         add_exclude_file(optarg,1, 0);
 317                         break;
 318
 319                 case OPT_INCLUDE_FROM:
 320                         add_exclude_file(optarg,1, 1);
 321                         break;
 322
 323                 case OPT_SAFE_LINKS:
 324                         safe_symlinks=1;
 325                         break;
 326
 327                 case 'h':
 328                         usage(FINFO);
 329                         exit_cleanup(0);
 330
 331                 case 'b':
 332                         make_backups=1;
 333                         break;
 334
 335                 case 'n':
 336                         dry_run=1;
 337                         break;
 338
 339                 case 'S':
 340                         sparse_files=1;
 341                         break;
 342
 343                 case 'C':
 344                         cvs_exclude=1;
 345                         break;
 346
 347                 case 'u':
 348                         update_only=1;
 349                         break;
 350
 351                 case 'l':
 352                         preserve_links=1;
 353                         break;
 354
 355                 case 'L':
 356                         copy_links=1;
 357                         break;
 358
 359                 case 'W':
 360                         whole_file=1;
 361                         break;
 362
 363                 case 'H':
 364 #if SUPPORT_HARD_LINKS
 365                         preserve_hard_links=1;
 366 #else
 367                         slprintf(err_buf,sizeof(err_buf),"hard links are not supported on this server\n");
 368                         rprintf(FERROR,"ERROR: hard links not supported on this platform\n");
 369                         return 0;
 370 #endif
 371                         break;
 372
 373                 case 'p':
 374                         preserve_perms=1;
 375                         break;
 376
 377                 case 'o':
 378                         preserve_uid=1;
 379                         break;
 380
 381                 case 'g':
 382                         preserve_gid=1;
 383                         break;
 384
 385                 case 'D':
 386                         preserve_devices=1;
 387                         break;
 388
 389                 case 't':
 390                         preserve_times=1;
 391                         break;
 392
 393                 case 'c':
 394                         always_checksum=1;
 395                         break;
 396
 397                 case 'v':
 398                         verbose++;
 399                         break;
 400
 401                 case 'a':
 402                         recurse=1;
 403 #if SUPPORT_LINKS
 404                         preserve_links=1;
 405 #endif
 406                         preserve_perms=1;
 407                         preserve_times=1;
 408                         preserve_gid=1;
 409                         if (am_root) {
 410                                 preserve_devices=1;
 411                                 preserve_uid=1;
 412                         }
 413                         break;
 414
 415                 case OPT_SERVER:
 416                         am_server = 1;
 417                         break;
 418
 419                 case OPT_SENDER:
 420                         if (!am_server) {
 421                                 usage(FERROR);
 422                                 exit_cleanup(RERR_SYNTAX);
 423                         }
 424                         am_sender = 1;
 425                         break;
 426
 427                 case 'r':
 428                         recurse = 1;
 429                         break;
 430
 431                 case 'R':
 432                         relative_paths = 1;
 433                         break;
 434
 435                 case 'e':
 436                         shell_cmd = optarg;
 437                         break;
 438
 439                 case 'B':
 440                         block_size = atoi(optarg);
 441                         break;
 442
 443                 case OPT_TIMEOUT:
 444                         io_timeout = atoi(optarg);
 445                         break;
 446
 447                 case 'T':
 448                         tmpdir = optarg;
 449                         break;
 450
 451                 case OPT_COMPARE_DEST:
 452                         compare_dest = optarg;
 453                         break;
 454
 455                 case 'z':
 456                         do_compression = 1;
 457                         break;
 458
 459                 case OPT_DAEMON:
 460                         am_daemon = 1;
 461                         break;
 462
 463                 case OPT_STATS:
 464                         do_stats = 1;
 465                         break;
 466
 467                 case OPT_PROGRESS:
 468                         do_progress = 1;
 469                         break;
 470
 471                 case OPT_PARTIAL:
 472                         keep_partial = 1;
 473                         break;
 474
 475                 case OPT_CONFIG:
 476                         config_file = optarg;
 477                         break;
 478
 479                 case OPT_PORT:
 480                         rsync_port = atoi(optarg);
 481                         break;
 482
 483                 case OPT_LOG_FORMAT:
 484                         log_format = optarg;
 485                         break;
 486
 487                 default:
 488                         slprintf(err_buf,sizeof(err_buf),"unrecognised option\n");
 489                         return 0;
 490                 }
 491         }
 492         return 1;
 493 }
 494
 495
 496 void server_options(char **args,int *argc)
 497 {
 498         int ac = *argc;
 499         static char argstr[50];
 500         static char bsize[30];
 501         static char iotime[30];
 502         int i, x;
 503
 504         args[ac++] = "--server";
 505
 506         if (!am_sender)
 507                 args[ac++] = "--sender";
 508
 509         x = 1;
 510         argstr[0] = '-';
 511         for (i=0;i<verbose;i++)
 512                 argstr[x++] = 'v';
 513         if (make_backups)
 514                 argstr[x++] = 'b';
 515         if (update_only)
 516                 argstr[x++] = 'u';
 517         if (dry_run)
 518                 argstr[x++] = 'n';
 519         if (preserve_links)
 520                 argstr[x++] = 'l';
 521         if (copy_links)
 522                 argstr[x++] = 'L';
 523         if (whole_file)
 524                 argstr[x++] = 'W';
 525         if (preserve_hard_links)
 526                 argstr[x++] = 'H';
 527         if (preserve_uid)
 528                 argstr[x++] = 'o';
 529         if (preserve_gid)
 530                 argstr[x++] = 'g';
 531         if (preserve_devices)
 532                 argstr[x++] = 'D';
 533         if (preserve_times)
 534                 argstr[x++] = 't';
 535         if (preserve_perms)
 536                 argstr[x++] = 'p';
 537         if (recurse)
 538                 argstr[x++] = 'r';
 539         if (always_checksum)
 540                 argstr[x++] = 'c';
 541         if (cvs_exclude)
 542                 argstr[x++] = 'C';
 543         if (ignore_times)
 544                 argstr[x++] = 'I';
 545         if (relative_paths)
 546                 argstr[x++] = 'R';
 547         if (one_file_system)
 548                 argstr[x++] = 'x';
 549         if (sparse_files)
 550                 argstr[x++] = 'S';
 551         if (do_compression)
 552                 argstr[x++] = 'z';
 553         argstr[x] = 0;
 554
 555         if (x != 1) args[ac++] = argstr;
 556
 557         if (block_size != BLOCK_SIZE) {
 558                 sprintf(bsize,"-B%d",block_size);
 559                 args[ac++] = bsize;
 560         }
 561
 562         if (io_timeout) {
 563                 sprintf(iotime,"--timeout=%d",io_timeout);
 564                 args[ac++] = iotime;
 565         }
 566
 567         if (strcmp(backup_suffix, BACKUP_SUFFIX)) {
 568                 args[ac++] = "--suffix";
 569                 args[ac++] = backup_suffix;
 570         }
 571
 572         if (delete_mode)
 573                 args[ac++] = "--delete";
 574
 575         if (keep_partial)
 576                 args[ac++] = "--partial";
 577
 578         if (force_delete)
 579                 args[ac++] = "--force";
 580
 581         if (safe_symlinks)
 582                 args[ac++] = "--safe-links";
 583
 584         if (numeric_ids)
 585                 args[ac++] = "--numeric-ids";
 586
 587         if (tmpdir) {
 588                 args[ac++] = "--temp-dir";
 589                 args[ac++] = tmpdir;
 590         }
 591
 592         if (compare_dest && am_sender) {
 593                 /* the server only needs this option if it is not the sender,
 594                  *   and it may be an older version that doesn't know this
 595                  *   option, so don't send it if client is the sender.
 596                  */
 597                 args[ac++] = "--compare-dest";
 598                 args[ac++] = compare_dest;
 599         }
 600
 601
 602         *argc = ac;
 603 }
 604