options.c

   1 /*  -*- c-file-style: "linux" -*-
   2  *
   3  * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
   4  * Copyright (C) 2000, 2001, 2002 by Martin Pool <mbp@samba.org>
   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 #include "popt.h"
  23 #include "zlib/zlib.h"
  24
  25 extern int module_id;
  26 extern int sanitize_paths;
  27 extern struct filter_list_struct filter_list;
  28 extern struct filter_list_struct server_filter_list;
  29
  30 int make_backups = 0;
  31
  32 /**
  33  * If 1, send the whole file as literal data rather than trying to
  34  * create an incremental diff.
  35  *
  36  * If -1, then look at whether we're local or remote and go by that.
  37  *
  38  * @sa disable_deltas_p()
  39  **/
  40 int whole_file = -1;
  41
  42 int append_mode = 0;
  43 int keep_dirlinks = 0;
  44 int copy_links = 0;
  45 int preserve_links = 0;
  46 int preserve_hard_links = 0;
  47 int preserve_perms = 0;
  48 int preserve_devices = 0;
  49 int preserve_uid = 0;
  50 int preserve_gid = 0;
  51 int preserve_times = 0;
  52 int omit_dir_times = 0;
  53 int update_only = 0;
  54 int cvs_exclude = 0;
  55 int dry_run = 0;
  56 int do_xfers = 1;
  57 int ignore_times = 0;
  58 int delete_mode = 0;
  59 int delete_during = 0;
  60 int delete_before = 0;
  61 int delete_after = 0;
  62 int delete_excluded = 0;
  63 int remove_sent_files = 0;
  64 int one_file_system = 0;
  65 int protocol_version = PROTOCOL_VERSION;
  66 int sparse_files = 0;
  67 int do_compression = 0;
  68 int def_compress_level = Z_DEFAULT_COMPRESSION;
  69 int am_root = 0;
  70 int am_server = 0;
  71 int am_sender = 0;
  72 int am_generator = 0;
  73 int am_starting_up = 1;
  74 int orig_umask = 0;
  75 int relative_paths = -1;
  76 int implied_dirs = 1;
  77 int numeric_ids = 0;
  78 int force_delete = 0;
  79 int io_timeout = 0;
  80 int allowed_lull = 0;
  81 char *files_from = NULL;
  82 int filesfrom_fd = -1;
  83 char *filesfrom_host = NULL;
  84 int eol_nulls = 0;
  85 int human_readable = 0;
  86 int recurse = 0;
  87 int xfer_dirs = -1;
  88 int am_daemon = 0;
  89 int daemon_over_rsh = 0;
  90 int do_stats = 0;
  91 int do_progress = 0;
  92 int keep_partial = 0;
  93 int safe_symlinks = 0;
  94 int copy_unsafe_links = 0;
  95 int size_only = 0;
  96 int daemon_bwlimit = 0;
  97 int bwlimit = 0;
  98 int fuzzy_basis = 0;
  99 size_t bwlimit_writemax = 0;
 100 int ignore_existing = 0;
 101 int ignore_non_existing = 0;
 102 int need_messages_from_generator = 0;
 103 int max_delete = 0;
 104 OFF_T max_size = 0;
 105 OFF_T min_size = 0;
 106 int ignore_errors = 0;
 107 int modify_window = 0;
 108 int blocking_io = -1;
 109 int checksum_seed = 0;
 110 int inplace = 0;
 111 int delay_updates = 0;
 112 long block_size = 0; /* "long" because popt can't set an int32. */
 113
 114
 115 /** Network address family. **/
 116 #ifdef INET6
 117 int default_af_hint = 0;        /* Any protocol */
 118 #else
 119 int default_af_hint = AF_INET;  /* Must use IPv4 */
 120 #endif
 121
 122 /** Do not go into the background when run as --daemon.  Good
 123  * for debugging and required for running as a service on W32,
 124  * or under Unix process-monitors. **/
 125 int no_detach
 126 #if defined _WIN32 || defined __WIN32__
 127         = 1;
 128 #else
 129         = 0;
 130 #endif
 131
 132 int write_batch = 0;
 133 int read_batch = 0;
 134 int backup_dir_len = 0;
 135 int backup_suffix_len;
 136 unsigned int backup_dir_remainder;
 137
 138 char *backup_suffix = NULL;
 139 char *tmpdir = NULL;
 140 char *partial_dir = NULL;
 141 char *basis_dir[MAX_BASIS_DIRS+1];
 142 char *config_file = NULL;
 143 char *shell_cmd = NULL;
 144 char *log_format = NULL;
 145 char *password_file = NULL;
 146 char *rsync_path = RSYNC_PATH;
 147 char *backup_dir = NULL;
 148 char *chmod_mode = NULL;
 149 char backup_dir_buf[MAXPATHLEN];
 150 int rsync_port = 0;
 151 int compare_dest = 0;
 152 int copy_dest = 0;
 153 int link_dest = 0;
 154 int basis_dir_cnt = 0;
 155 char *dest_option = NULL;
 156
 157 int verbose = 0;
 158 int quiet = 0;
 159 int log_before_transfer = 0;
 160 int log_format_has_i = 0;
 161 int log_format_has_o_or_i = 0;
 162 int always_checksum = 0;
 163 int list_only = 0;
 164
 165 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 166 char *batch_name = NULL;
 167
 168 struct chmod_mode_struct *chmod_modes = NULL;
 169
 170 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 171 static int F_option_cnt = 0;
 172 static int modify_window_set;
 173 static int itemize_changes = 0;
 174 static int refused_delete, refused_archive_part, refused_compress;
 175 static int refused_partial, refused_progress, refused_delete_before;
 176 static int refused_inplace;
 177 static char *max_size_arg, *min_size_arg;
 178 static char partialdir_for_delayupdate[] = ".~tmp~";
 179
 180 /** Local address to bind.  As a character string because it's
 181  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 182  * address, or a hostname. **/
 183 char *bind_address;
 184
 185
 186 static void print_rsync_version(enum logcode f)
 187 {
 188         char const *got_socketpair = "no ";
 189         char const *have_inplace = "no ";
 190         char const *hardlinks = "no ";
 191         char const *links = "no ";
 192         char const *ipv6 = "no ";
 193         STRUCT_STAT *dumstat;
 194
 195 #ifdef HAVE_SOCKETPAIR
 196         got_socketpair = "";
 197 #endif
 198
 199 #ifdef HAVE_FTRUNCATE
 200         have_inplace = "";
 201 #endif
 202
 203 #ifdef SUPPORT_HARD_LINKS
 204         hardlinks = "";
 205 #endif
 206
 207 #ifdef SUPPORT_LINKS
 208         links = "";
 209 #endif
 210
 211 #ifdef INET6
 212         ipv6 = "";
 213 #endif
 214
 215         rprintf(f, "%s  version %s  protocol version %d\n",
 216                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
 217         rprintf(f, "Copyright (C) 1996-2006 by Wayne Davison, Andrew Tridgell, and others\n");
 218         rprintf(f, "<http://rsync.samba.org/>\n");
 219         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
 220                 "%shard links, %ssymlinks, batchfiles, \n",
 221                 (int) (sizeof (OFF_T) * 8),
 222                 got_socketpair, hardlinks, links);
 223
 224         /* Note that this field may not have type ino_t.  It depends
 225          * on the complicated interaction between largefile feature
 226          * macros. */
 227         rprintf(f, "              %sinplace, %sIPv6, %d-bit system inums, %d-bit internal inums\n",
 228                 have_inplace, ipv6,
 229                 (int) (sizeof dumstat->st_ino * 8),
 230                 (int) (sizeof (int64) * 8));
 231 #ifdef MAINTAINER_MODE
 232         rprintf(f, "              panic action: \"%s\"\n",
 233                 get_panic_action());
 234 #endif
 235
 236 #if SIZEOF_INT64 < 8
 237         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 238 #endif
 239         if (sizeof (int64) != SIZEOF_INT64) {
 240                 rprintf(f,
 241                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 242                         (int) SIZEOF_INT64, (int) sizeof (int64));
 243         }
 244
 245         rprintf(f,"\nrsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 246         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 247         rprintf(f,"General Public Licence for details.\n");
 248 }
 249
 250
 251 void usage(enum logcode F)
 252 {
 253   print_rsync_version(F);
 254
 255   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\n");
 256   rprintf(F,"via a fast differencing algorithm.\n");
 257
 258   rprintf(F,"\nUsage: rsync [OPTION]... SRC [SRC]... DEST\n");
 259   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 260   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 261   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 262   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 263   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 264   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 265   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 266   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 267   rprintf(F,"\nOptions\n");
 268   rprintf(F," -v, --verbose               increase verbosity\n");
 269   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 270   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 271   rprintf(F," -a, --archive               archive mode; same as -rlptgoD (no -H)\n");
 272   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 273   rprintf(F," -r, --recursive             recurse into directories\n");
 274   rprintf(F," -R, --relative              use relative path names\n");
 275   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 276   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 277   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 278   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 279   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 280   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 281   rprintf(F,"     --append                append data onto shorter files\n");
 282   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 283   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 284   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 285   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 286   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 287   rprintf(F," -H, --hard-links            preserve hard links\n");
 288   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 289   rprintf(F," -p, --perms                 preserve permissions\n");
 290   rprintf(F," -o, --owner                 preserve owner (root only)\n");
 291   rprintf(F," -g, --group                 preserve group\n");
 292   rprintf(F," -D, --devices               preserve devices (root only)\n");
 293   rprintf(F," -t, --times                 preserve times\n");
 294   rprintf(F," -O, --omit-dir-times        omit directories when preserving times\n");
 295   rprintf(F,"     --chmod=CHMOD           change destination permissions\n");
 296   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 297   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 298   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
 299   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 300   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 301   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 302   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 303   rprintf(F,"     --existing              ignore non-existing files on receiving side\n");
 304   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
 305   rprintf(F,"     --remove-sent-files     sent files/symlinks are removed from sending side\n");
 306   rprintf(F,"     --del                   an alias for --delete-during\n");
 307   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 308   rprintf(F,"     --delete-before         receiver deletes before transfer (default)\n");
 309   rprintf(F,"     --delete-during         receiver deletes during transfer, not before\n");
 310   rprintf(F,"     --delete-after          receiver deletes after transfer, not before\n");
 311   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
 312   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 313   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 314   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 315   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 316   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 317   rprintf(F,"     --partial               keep partially transferred files\n");
 318   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 319   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 320   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 321   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
 322   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 323   rprintf(F,"     --size-only             skip files that match in size\n");
 324   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 325   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 326   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 327   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 328   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 329   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 330   rprintf(F," -z, --compress              compress file data during the transfer\n");
 331   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 332   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 333   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 334   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 335   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 336   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 337   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 338   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 339   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 340   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 341   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 342   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 343   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 344   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 345   rprintf(F,"     --stats                 give some file-transfer stats\n");
 346   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 347   rprintf(F,"     --si                    like human-readable, but use powers of 1000\n");
 348   rprintf(F,"     --progress              show progress during transfer\n");
 349   rprintf(F," -P                          same as --partial --progress\n");
 350   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 351   rprintf(F,"     --log-format=FORMAT     output filenames using the specified format\n");
 352   rprintf(F,"     --password-file=FILE    read password from FILE\n");
 353   rprintf(F,"     --list-only             list the files instead of copying them\n");
 354   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 355   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 356   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 357   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 358   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 359 #ifdef INET6
 360   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 361   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 362 #endif
 363   rprintf(F,"     --version               print version number\n");
 364   rprintf(F,"     --help                  show this help screen\n");
 365
 366   rprintf(F,"\nUse \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 367   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 368   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 369 }
 370
 371 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 372       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 373       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE,
 374       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 375       OPT_REFUSED_BASE = 9000};
 376
 377 static struct poptOption long_options[] = {
 378   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 379   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 380   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 381   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 382   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 383   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 384   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 385   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 386   {"human-readable",  'h', POPT_ARG_VAL,    &human_readable, 1, 0, 0},
 387   {"si",               0,  POPT_ARG_VAL,    &human_readable, 2, 0, 0},
 388   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 389   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 390   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 391   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 392   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 393   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 394   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 395   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 396   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 397   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 398   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 399   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 400   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 401   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 402   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 2, 0, 0 },
 403   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 404   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 405   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 406   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 407   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 408   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 409   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 410   {"devices",         'D', POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 411   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 412   {"no-D",             0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 413   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 414   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 415   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 416   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 417   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 418   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 419   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 420   {"hard-links",      'H', POPT_ARG_NONE,   &preserve_hard_links, 0, 0, 0 },
 421   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 422   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 423   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 424   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 425   {"chmod",            0,  POPT_ARG_STRING, &chmod_mode, 0, 0, 0 },
 426   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 427   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 428   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 429   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 430   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 431   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 432   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 433   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 434   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 435   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 436   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 437   {"append",           0,  POPT_ARG_VAL,    &append_mode, 1, 0, 0 },
 438   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 439   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 440   {"delete-before",    0,  POPT_ARG_VAL,    &delete_before, 2, 0, 0 },
 441   {"delete-during",    0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 442   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 443   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 444   {"remove-sent-files",0,  POPT_ARG_NONE,   &remove_sent_files, 0, 0, 0 },
 445   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 446   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 447   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 448   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 449   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 450   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 451   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 452   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 453   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 454   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 455   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 456   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 457   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 458   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
 459   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 460   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 461   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 462   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 463   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
 464   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 465   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 466   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 467   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 468   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 469   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 470   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 471   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 472   {"delay-updates",    0,  POPT_ARG_NONE,   &delay_updates, 0, 0, 0 },
 473   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
 474   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 475   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 476   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
 477   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 478   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 479   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 480   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 481   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 482   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 483   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 484   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
 485   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
 486   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 487   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 488   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 489   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 490 #ifdef INET6
 491   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 492   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 493 #endif
 494   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 495   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 496   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 497   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 498   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 499   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 500   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 501   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 502   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 503   /* All the following options switch us into daemon-mode option-parsing. */
 504   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 505   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 506   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 507   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 508   {0,0,0,0, 0, 0, 0}
 509 };
 510
 511 static void daemon_usage(enum logcode F)
 512 {
 513   print_rsync_version(F);
 514
 515   rprintf(F,"\nUsage: rsync --daemon [OPTION]...\n");
 516   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 517   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 518   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 519   rprintf(F,"     --no-detach             do not detach from the parent\n");
 520   rprintf(F,"     --port=PORT             listen on alternate port number\n");
 521   rprintf(F," -v, --verbose               increase verbosity\n");
 522 #ifdef INET6
 523   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 524   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 525 #endif
 526   rprintf(F,"     --help                  show this help screen\n");
 527
 528   rprintf(F,"\nIf you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 529   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 530 }
 531
 532 static struct poptOption long_daemon_options[] = {
 533   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 534   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 535   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
 536   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 537   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 538 #ifdef INET6
 539   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 540   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 541 #endif
 542   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
 543   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
 544   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 545   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 546   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 547   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 548   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 549   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 550   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 551   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 552   {0,0,0,0, 0, 0, 0}
 553 };
 554
 555
 556 static char err_buf[200];
 557
 558
 559 /**
 560  * Store the option error message, if any, so that we can log the
 561  * connection attempt (which requires parsing the options), and then
 562  * show the error later on.
 563  **/
 564 void option_error(void)
 565 {
 566         if (!err_buf[0]) {
 567                 strcpy(err_buf, "Error parsing options: "
 568                     "option may be supported on client but not on server?\n");
 569         }
 570
 571         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 572 }
 573
 574
 575 /**
 576  * Tweak the option table to disable all options that the rsyncd.conf
 577  * file has told us to refuse.
 578  **/
 579 static void set_refuse_options(char *bp)
 580 {
 581         struct poptOption *op;
 582         char *cp, shortname[2];
 583         int is_wild, found_match;
 584
 585         shortname[1] = '\0';
 586
 587         while (1) {
 588                 while (*bp == ' ') bp++;
 589                 if (!*bp)
 590                         break;
 591                 if ((cp = strchr(bp, ' ')) != NULL)
 592                         *cp= '\0';
 593                 is_wild = strpbrk(bp, "*?[") != NULL;
 594                 found_match = 0;
 595                 for (op = long_options; ; op++) {
 596                         *shortname = op->shortName;
 597                         if (!op->longName && !*shortname)
 598                                 break;
 599                         if ((op->longName && wildmatch(bp, op->longName))
 600                             || (*shortname && wildmatch(bp, shortname))) {
 601                                 if (op->argInfo == POPT_ARG_VAL)
 602                                         op->argInfo = POPT_ARG_NONE;
 603                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 604                                 found_match = 1;
 605                                 /* These flags are set to let us easily check
 606                                  * an implied option later in the code. */
 607                                 switch (*shortname) {
 608                                 case 'r': case 'd': case 'l': case 'p':
 609                                 case 't': case 'g': case 'o': case 'D':
 610                                         refused_archive_part = op->val;
 611                                         break;
 612                                 case 'z':
 613                                         refused_compress = op->val;
 614                                         break;
 615                                 case '\0':
 616                                         if (wildmatch("delete", op->longName))
 617                                                 refused_delete = op->val;
 618                                         else if (wildmatch("delete-before", op->longName))
 619                                                 refused_delete_before = op->val;
 620                                         else if (wildmatch("partial", op->longName))
 621                                                 refused_partial = op->val;
 622                                         else if (wildmatch("progress", op->longName))
 623                                                 refused_progress = op->val;
 624                                         else if (wildmatch("inplace", op->longName))
 625                                                 refused_inplace = op->val;
 626                                         break;
 627                                 }
 628                                 if (!is_wild)
 629                                         break;
 630                         }
 631                 }
 632                 if (!found_match) {
 633                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 634                                 bp);
 635                 }
 636                 if (!cp)
 637                         break;
 638                 *cp = ' ';
 639                 bp = cp + 1;
 640         }
 641
 642         for (op = long_options; ; op++) {
 643                 *shortname = op->shortName;
 644                 if (!op->longName && !*shortname)
 645                         break;
 646                 if (op->val == OPT_DAEMON) {
 647                         if (op->argInfo == POPT_ARG_VAL)
 648                                 op->argInfo = POPT_ARG_NONE;
 649                         op->val = (op - long_options) + OPT_REFUSED_BASE;
 650                 }
 651         }
 652 }
 653
 654
 655 static int count_args(const char **argv)
 656 {
 657         int i = 0;
 658
 659         if (argv) {
 660                 while (argv[i] != NULL)
 661                         i++;
 662         }
 663
 664         return i;
 665 }
 666
 667
 668 static OFF_T parse_size_arg(char **size_arg, char def_suf)
 669 {
 670         int reps, mult, make_compatible = 0;
 671         const char *arg;
 672         OFF_T size = 1;
 673
 674         for (arg = *size_arg; isdigit(*(uchar*)arg); arg++) {}
 675         if (*arg == '.')
 676                 for (arg++; isdigit(*(uchar*)arg); arg++) {}
 677         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
 678         case 'b': case 'B':
 679                 reps = 0;
 680                 break;
 681         case 'k': case 'K':
 682                 reps = 1;
 683                 break;
 684         case 'm': case 'M':
 685                 reps = 2;
 686                 break;
 687         case 'g': case 'G':
 688                 reps = 3;
 689                 break;
 690         default:
 691                 return -1;
 692         }
 693         if (*arg == 'b' || *arg == 'B')
 694                 mult = 1000, make_compatible = 1, arg++;
 695         else if (!*arg || *arg == '+' || *arg == '-')
 696                 mult = 1024;
 697         else if (strncasecmp(arg, "ib", 2) == 0)
 698                 mult = 1024, arg += 2;
 699         else
 700                 return -1;
 701         while (reps--)
 702                 size *= mult;
 703         size *= atof(*size_arg);
 704         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
 705                 size += atoi(arg), make_compatible = 1, arg += 2;
 706         if (*arg)
 707                 return -1;
 708         if (size > 0 && make_compatible) {
 709                 /* We convert this manually because we may need %lld precision,
 710                  * and that's not a portable sprintf() escape. */
 711                 char buf[128], *s = buf + sizeof buf - 1;
 712                 OFF_T num = size;
 713                 *s = '\0';
 714                 while (num) {
 715                         *--s = (num % 10) + '0';
 716                         num /= 10;
 717                 }
 718                 if (!(*size_arg = strdup(s)))
 719                         out_of_memory("parse_size_arg");
 720         }
 721         return size;
 722 }
 723
 724
 725 static void create_refuse_error(int which)
 726 {
 727         /* The "which" value is the index + OPT_REFUSED_BASE. */
 728         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
 729         int n = snprintf(err_buf, sizeof err_buf,
 730                          "The server is configured to refuse --%s\n",
 731                          op->longName) - 1;
 732         if (op->shortName) {
 733                 snprintf(err_buf + n, sizeof err_buf - n,
 734                          " (-%c)\n", op->shortName);
 735         }
 736 }
 737
 738
 739 /**
 740  * Process command line arguments.  Called on both local and remote.
 741  *
 742  * @retval 1 if all options are OK; with globals set to appropriate
 743  * values
 744  *
 745  * @retval 0 on error, with err_buf containing an explanation
 746  **/
 747 int parse_arguments(int *argc, const char ***argv, int frommain)
 748 {
 749         int opt;
 750         char *ref = lp_refuse_options(module_id);
 751         const char *arg;
 752         poptContext pc;
 753
 754         if (ref && *ref)
 755                 set_refuse_options(ref);
 756
 757         /* TODO: Call poptReadDefaultConfig; handle errors. */
 758
 759         /* The context leaks in case of an error, but if there's a
 760          * problem we always exit anyhow. */
 761         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
 762         poptReadDefaultConfig(pc, 0);
 763
 764         while ((opt = poptGetNextOpt(pc)) != -1) {
 765                 /* most options are handled automatically by popt;
 766                  * only special cases are returned and listed here. */
 767
 768                 switch (opt) {
 769                 case OPT_VERSION:
 770                         print_rsync_version(FINFO);
 771                         exit_cleanup(0);
 772
 773                 case OPT_DAEMON:
 774                         if (am_daemon) {
 775                                 strcpy(err_buf, "Attempt to hack rsync thwarted!\n");
 776                                 return 0;
 777                         }
 778                         poptFreeContext(pc);
 779                         pc = poptGetContext(RSYNC_NAME, *argc, *argv,
 780                                             long_daemon_options, 0);
 781                         while ((opt = poptGetNextOpt(pc)) != -1) {
 782                                 switch (opt) {
 783                                 case 'h':
 784                                         daemon_usage(FINFO);
 785                                         exit_cleanup(0);
 786
 787                                 case 'v':
 788                                         verbose++;
 789                                         break;
 790
 791                                 default:
 792                                         rprintf(FERROR,
 793                                             "rsync: %s: %s (in daemon mode)\n",
 794                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 795                                             poptStrerror(opt));
 796                                         goto daemon_error;
 797                                 }
 798                         }
 799
 800                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 801                                 snprintf(err_buf, sizeof err_buf,
 802                                          "the --temp-dir path is WAY too long.\n");
 803                                 return 0;
 804                         }
 805
 806                         if (!daemon_opt) {
 807                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
 808                             daemon_error:
 809                                 rprintf(FERROR,
 810                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
 811                                 exit_cleanup(RERR_SYNTAX);
 812                         }
 813
 814                         *argv = poptGetArgs(pc);
 815                         *argc = count_args(*argv);
 816                         am_starting_up = 0;
 817                         daemon_opt = 0;
 818                         am_daemon = 1;
 819                         return 1;
 820
 821                 case OPT_MODIFY_WINDOW:
 822                         /* The value has already been set by popt, but
 823                          * we need to remember that we're using a
 824                          * non-default setting. */
 825                         modify_window_set = 1;
 826                         break;
 827
 828                 case OPT_FILTER:
 829                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
 830                         break;
 831
 832                 case OPT_EXCLUDE:
 833                         parse_rule(&filter_list, poptGetOptArg(pc),
 834                                    0, XFLG_OLD_PREFIXES);
 835                         break;
 836
 837                 case OPT_INCLUDE:
 838                         parse_rule(&filter_list, poptGetOptArg(pc),
 839                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
 840                         break;
 841
 842                 case OPT_EXCLUDE_FROM:
 843                 case OPT_INCLUDE_FROM:
 844                         arg = poptGetOptArg(pc);
 845                         if (sanitize_paths)
 846                                 arg = sanitize_path(NULL, arg, NULL, 0);
 847                         if (server_filter_list.head) {
 848                                 char *cp = (char *)arg;
 849                                 if (!*cp)
 850                                         goto options_rejected;
 851                                 clean_fname(cp, 1);
 852                                 if (check_filter(&server_filter_list, cp, 0) < 0)
 853                                         goto options_rejected;
 854                         }
 855                         parse_filter_file(&filter_list, arg,
 856                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
 857                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
 858                         break;
 859
 860                 case 'a':
 861                         if (refused_archive_part) {
 862                                 create_refuse_error(refused_archive_part);
 863                                 return 0;
 864                         }
 865                         if (!recurse) /* preserve recurse == 2 */
 866                                 recurse = 1;
 867 #ifdef SUPPORT_LINKS
 868                         preserve_links = 1;
 869 #endif
 870                         preserve_perms = 1;
 871                         preserve_times = 1;
 872                         preserve_gid = 1;
 873                         preserve_uid = 1;
 874                         preserve_devices = 1;
 875                         break;
 876
 877                 case OPT_HELP:
 878                         usage(FINFO);
 879                         exit_cleanup(0);
 880
 881                 case 'i':
 882                         itemize_changes++;
 883                         break;
 884
 885                 case 'v':
 886                         verbose++;
 887                         break;
 888
 889                 case 'q':
 890                         if (frommain)
 891                                 quiet++;
 892                         break;
 893
 894                 case 'x':
 895                         one_file_system++;
 896                         break;
 897
 898                 case OPT_SENDER:
 899                         if (!am_server) {
 900                                 usage(FERROR);
 901                                 exit_cleanup(RERR_SYNTAX);
 902                         }
 903                         am_sender = 1;
 904                         break;
 905
 906                 case 'F':
 907                         switch (++F_option_cnt) {
 908                         case 1:
 909                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
 910                                 break;
 911                         case 2:
 912                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
 913                                 break;
 914                         }
 915                         break;
 916
 917                 case 'P':
 918                         if (refused_partial || refused_progress) {
 919                                 create_refuse_error(refused_partial
 920                                     ? refused_partial : refused_progress);
 921                                 return 0;
 922                         }
 923                         do_progress = 1;
 924                         keep_partial = 1;
 925                         break;
 926
 927                 case 'z':
 928                         if (def_compress_level < Z_DEFAULT_COMPRESSION
 929                          || def_compress_level > Z_BEST_COMPRESSION) {
 930                                 snprintf(err_buf, sizeof err_buf,
 931                                         "--compress-level value is invalid: %d\n",
 932                                         def_compress_level);
 933                                 return 0;
 934                         }
 935                         do_compression = def_compress_level != Z_NO_COMPRESSION;
 936                         if (do_compression && refused_compress) {
 937                                 create_refuse_error(refused_compress);
 938                                 return 0;
 939                         }
 940                         break;
 941
 942                 case OPT_WRITE_BATCH:
 943                         /* batch_name is already set */
 944                         write_batch = 1;
 945                         break;
 946
 947                 case OPT_ONLY_WRITE_BATCH:
 948                         /* batch_name is already set */
 949                         write_batch = -1;
 950                         break;
 951
 952                 case OPT_READ_BATCH:
 953                         /* batch_name is already set */
 954                         read_batch = 1;
 955                         break;
 956
 957                 case OPT_MAX_SIZE:
 958                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
 959                                 snprintf(err_buf, sizeof err_buf,
 960                                         "--max-size value is invalid: %s\n",
 961                                         max_size_arg);
 962                                 return 0;
 963                         }
 964                         break;
 965
 966                 case OPT_MIN_SIZE:
 967                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
 968                                 snprintf(err_buf, sizeof err_buf,
 969                                         "--min-size value is invalid: %s\n",
 970                                         min_size_arg);
 971                                 return 0;
 972                         }
 973                         break;
 974
 975                 case OPT_LINK_DEST:
 976 #ifdef HAVE_LINK
 977                         link_dest = 1;
 978                         dest_option = "--link-dest";
 979                         goto set_dest_dir;
 980 #else
 981                         snprintf(err_buf, sizeof err_buf,
 982                                  "hard links are not supported on this %s\n",
 983                                  am_server ? "server" : "client");
 984                         return 0;
 985 #endif
 986
 987                 case OPT_COPY_DEST:
 988                         copy_dest = 1;
 989                         dest_option = "--copy-dest";
 990                         goto set_dest_dir;
 991
 992                 case OPT_COMPARE_DEST:
 993                         compare_dest = 1;
 994                         dest_option = "--compare-dest";
 995                 set_dest_dir:
 996                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
 997                                 snprintf(err_buf, sizeof err_buf,
 998                                         "ERROR: at most %d %s args may be specified\n",
 999                                         MAX_BASIS_DIRS, dest_option);
1000                                 return 0;
1001                         }
1002                         arg = poptGetOptArg(pc);
1003                         if (sanitize_paths)
1004                                 arg = sanitize_path(NULL, arg, NULL, 0);
1005                         basis_dir[basis_dir_cnt++] = (char *)arg;
1006                         break;
1007
1008                 default:
1009                         /* A large opt value means that set_refuse_options()
1010                          * turned this option off. */
1011                         if (opt >= OPT_REFUSED_BASE) {
1012                                 create_refuse_error(opt);
1013                                 return 0;
1014                         }
1015                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1016                                  am_server ? "on remote machine: " : "",
1017                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1018                                  poptStrerror(opt));
1019                         return 0;
1020                 }
1021         }
1022
1023         if (human_readable && *argc == 2) {
1024                 usage(FINFO);
1025                 exit_cleanup(0);
1026         }
1027
1028 #ifndef SUPPORT_LINKS
1029         if (preserve_links && !am_sender) {
1030                 snprintf(err_buf, sizeof err_buf,
1031                          "symlinks are not supported on this %s\n",
1032                          am_server ? "server" : "client");
1033                 return 0;
1034         }
1035 #endif
1036
1037 #ifndef SUPPORT_HARD_LINKS
1038         if (preserve_hard_links) {
1039                 snprintf(err_buf, sizeof err_buf,
1040                          "hard links are not supported on this %s\n",
1041                          am_server ? "server" : "client");
1042                 return 0;
1043         }
1044 #endif
1045
1046         if (write_batch && read_batch) {
1047                 snprintf(err_buf, sizeof err_buf,
1048                         "--write-batch and --read-batch can not be used together\n");
1049                 return 0;
1050         }
1051         if (write_batch > 0 || read_batch) {
1052                 if (am_server) {
1053                         rprintf(FINFO,
1054                                 "ignoring --%s-batch option sent to server\n",
1055                                 write_batch ? "write" : "read");
1056                         /* We don't actually exit_cleanup(), so that we can
1057                          * still service older version clients that still send
1058                          * batch args to server. */
1059                         read_batch = write_batch = 0;
1060                         batch_name = NULL;
1061                 } else if (dry_run)
1062                         write_batch = 0;
1063         }
1064         if (read_batch && files_from) {
1065                 snprintf(err_buf, sizeof err_buf,
1066                         "--read-batch cannot be used with --files-from\n");
1067                 return 0;
1068         }
1069         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1070                 snprintf(err_buf, sizeof err_buf,
1071                         "the batch-file name must be %d characters or less.\n",
1072                         MAX_BATCH_NAME_LEN);
1073                 return 0;
1074         }
1075
1076         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1077                 snprintf(err_buf, sizeof err_buf,
1078                          "the --temp-dir path is WAY too long.\n");
1079                 return 0;
1080         }
1081
1082         if (compare_dest + copy_dest + link_dest > 1) {
1083                 snprintf(err_buf, sizeof err_buf,
1084                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1085                 return 0;
1086         }
1087
1088         if (files_from) {
1089                 if (recurse == 1) /* preserve recurse == 2 */
1090                         recurse = 0;
1091                 if (xfer_dirs < 0)
1092                         xfer_dirs = 1;
1093         }
1094
1095         if (xfer_dirs < 1)
1096                 xfer_dirs = recurse || list_only;
1097
1098         if (relative_paths < 0)
1099                 relative_paths = files_from? 1 : 0;
1100         if (!relative_paths)
1101                 implied_dirs = 0;
1102
1103         if (!!delete_before + delete_during + delete_after > 1) {
1104                 snprintf(err_buf, sizeof err_buf,
1105                         "You may not combine multiple --delete-WHEN options.\n");
1106                 return 0;
1107         }
1108         if (!xfer_dirs) {
1109                 delete_before = delete_during = delete_after = 0;
1110                 delete_mode = delete_excluded = 0;
1111         } else if (delete_before || delete_during || delete_after)
1112                 delete_mode = 1;
1113         else if (delete_mode || delete_excluded) {
1114                 if (refused_delete_before) {
1115                         create_refuse_error(refused_delete_before);
1116                         return 0;
1117                 }
1118                 delete_mode = delete_before = 1;
1119         }
1120
1121         if (delete_mode && refused_delete) {
1122                 create_refuse_error(refused_delete);
1123                 return 0;
1124         }
1125
1126         if (remove_sent_files) {
1127                 /* We only want to infer this refusal of --remove-sent-files
1128                  * via the refusal of "delete", not any of the "delete-FOO"
1129                  * options. */
1130                 if (refused_delete && am_sender) {
1131                         create_refuse_error(refused_delete);
1132                         return 0;
1133                 }
1134                 need_messages_from_generator = 1;
1135         }
1136
1137         *argv = poptGetArgs(pc);
1138         *argc = count_args(*argv);
1139
1140         if (sanitize_paths) {
1141                 int i;
1142                 for (i = *argc; i-- > 0; )
1143                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
1144                 if (tmpdir)
1145                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
1146                 if (partial_dir)
1147                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
1148                 if (backup_dir)
1149                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
1150         }
1151         if (server_filter_list.head && !am_sender) {
1152                 struct filter_list_struct *elp = &server_filter_list;
1153                 int i;
1154                 if (tmpdir) {
1155                         if (!*tmpdir)
1156                                 goto options_rejected;
1157                         clean_fname(tmpdir, 1);
1158                         if (check_filter(elp, tmpdir, 1) < 0)
1159                                 goto options_rejected;
1160                 }
1161                 if (partial_dir && *partial_dir) {
1162                         clean_fname(partial_dir, 1);
1163                         if (check_filter(elp, partial_dir, 1) < 0)
1164                                 goto options_rejected;
1165                 }
1166                 for (i = 0; i < basis_dir_cnt; i++) {
1167                         if (!*basis_dir[i])
1168                                 goto options_rejected;
1169                         clean_fname(basis_dir[i], 1);
1170                         if (check_filter(elp, basis_dir[i], 1) < 0)
1171                                 goto options_rejected;
1172                 }
1173                 if (backup_dir) {
1174                         if (!*backup_dir)
1175                                 goto options_rejected;
1176                         clean_fname(backup_dir, 1);
1177                         if (check_filter(elp, backup_dir, 1) < 0) {
1178                             options_rejected:
1179                                 snprintf(err_buf, sizeof err_buf,
1180                                     "Your options have been rejected by the server.\n");
1181                                 return 0;
1182                         }
1183                 }
1184         }
1185
1186         if (!backup_suffix)
1187                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1188         backup_suffix_len = strlen(backup_suffix);
1189         if (strchr(backup_suffix, '/') != NULL) {
1190                 snprintf(err_buf, sizeof err_buf,
1191                         "--suffix cannot contain slashes: %s\n",
1192                         backup_suffix);
1193                 return 0;
1194         }
1195         if (backup_dir) {
1196                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1197                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1198                 if (backup_dir_remainder < 32) {
1199                         snprintf(err_buf, sizeof err_buf,
1200                                 "the --backup-dir path is WAY too long.\n");
1201                         return 0;
1202                 }
1203                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1204                         backup_dir_buf[backup_dir_len++] = '/';
1205                         backup_dir_buf[backup_dir_len] = '\0';
1206                 }
1207                 if (verbose > 1 && !am_sender)
1208                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1209         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1210                 snprintf(err_buf, sizeof err_buf,
1211                         "--suffix cannot be a null string without --backup-dir\n");
1212                 return 0;
1213         } else if (delete_mode && !delete_excluded) {
1214                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1215                         "P *%s", backup_suffix);
1216                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1217         }
1218         if (make_backups && !backup_dir)
1219                 omit_dir_times = 1;
1220
1221         if (chmod_mode && !(chmod_modes = parse_chmod(chmod_mode))) {
1222                 snprintf(err_buf, sizeof err_buf,
1223                     "Invalid argument passed to --chmod\n");
1224                 return 0;
1225         }
1226
1227         if (log_format) {
1228                 if (am_server && log_format_has(log_format, 'I'))
1229                         log_format_has_i = 2;
1230                 else if (log_format_has(log_format, 'i'))
1231                         log_format_has_i = itemize_changes | 1;
1232                 if (!log_format_has(log_format, 'b')
1233                  && !log_format_has(log_format, 'c'))
1234                         log_before_transfer = !am_server;
1235         } else if (itemize_changes) {
1236                 log_format = "%i %n%L";
1237                 log_format_has_i = itemize_changes;
1238                 log_before_transfer = !am_server;
1239         }
1240
1241         if ((do_progress || dry_run) && !verbose && !log_before_transfer
1242             && !am_server)
1243                 verbose = 1;
1244
1245         if (dry_run)
1246                 do_xfers = 0;
1247
1248         set_io_timeout(io_timeout);
1249
1250         if (verbose && !log_format) {
1251                 log_format = "%n%L";
1252                 log_before_transfer = !am_server;
1253         }
1254         if (log_format_has_i || log_format_has(log_format, 'o'))
1255                 log_format_has_o_or_i = 1;
1256
1257         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1258                 bwlimit = daemon_bwlimit;
1259         if (bwlimit) {
1260                 bwlimit_writemax = (size_t)bwlimit * 128;
1261                 if (bwlimit_writemax < 512)
1262                         bwlimit_writemax = 512;
1263         }
1264
1265         if (sparse_files && inplace) {
1266                 /* Note: we don't check for this below, because --append is
1267                  * OK with --sparse (as long as redos are handled right). */
1268                 snprintf(err_buf, sizeof err_buf,
1269                          "--sparse cannot be used with --inplace\n");
1270                 return 0;
1271         }
1272
1273         if (append_mode) {
1274                 if (whole_file > 0) {
1275                         snprintf(err_buf, sizeof err_buf,
1276                                  "--append cannot be used with --whole-file\n");
1277                         return 0;
1278                 }
1279                 if (refused_inplace) {
1280                         create_refuse_error(refused_inplace);
1281                         return 0;
1282                 }
1283                 inplace = 1;
1284         }
1285
1286         if (delay_updates && !partial_dir)
1287                 partial_dir = partialdir_for_delayupdate;
1288
1289         if (inplace) {
1290 #ifdef HAVE_FTRUNCATE
1291                 if (partial_dir) {
1292                         snprintf(err_buf, sizeof err_buf,
1293                                  "--%s cannot be used with --%s\n",
1294                                  append_mode ? "append" : "inplace",
1295                                  delay_updates ? "delay-updates" : "partial-dir");
1296                         return 0;
1297                 }
1298                 /* --inplace implies --partial for refusal purposes, but we
1299                  * clear the keep_partial flag for internal logic purposes. */
1300                 if (refused_partial) {
1301                         create_refuse_error(refused_partial);
1302                         return 0;
1303                 }
1304                 keep_partial = 0;
1305 #else
1306                 snprintf(err_buf, sizeof err_buf,
1307                          "--%s is not supported on this %s\n",
1308                          append_mode ? "append" : "inplace",
1309                          am_server ? "server" : "client");
1310                 return 0;
1311 #endif
1312         } else {
1313                 if (keep_partial && !partial_dir) {
1314                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1315                                 partial_dir = strdup(arg);
1316                 }
1317                 if (partial_dir) {
1318                         if (*partial_dir)
1319                                 clean_fname(partial_dir, 1);
1320                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1321                                 partial_dir = NULL;
1322                         else if (*partial_dir != '/') {
1323                                 parse_rule(&filter_list, partial_dir,
1324                                     MATCHFLG_NO_PREFIXES|MATCHFLG_DIRECTORY, 0);
1325                         }
1326                         if (!partial_dir && refused_partial) {
1327                                 create_refuse_error(refused_partial);
1328                                 return 0;
1329                         }
1330                         keep_partial = 1;
1331                 }
1332         }
1333
1334         if (files_from) {
1335                 char *h, *p;
1336                 int q;
1337                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
1338                         usage(FERROR);
1339                         exit_cleanup(RERR_SYNTAX);
1340                 }
1341                 if (strcmp(files_from, "-") == 0) {
1342                         filesfrom_fd = 0;
1343                         if (am_server)
1344                                 filesfrom_host = ""; /* reading from socket */
1345                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1346                         if (am_server) {
1347                                 snprintf(err_buf, sizeof err_buf,
1348                                         "The --files-from sent to the server cannot specify a host.\n");
1349                                 return 0;
1350                         }
1351                         files_from = p;
1352                         filesfrom_host = h;
1353                         if (strcmp(files_from, "-") == 0) {
1354                                 snprintf(err_buf, sizeof err_buf,
1355                                         "Invalid --files-from remote filename\n");
1356                                 return 0;
1357                         }
1358                 } else {
1359                         if (sanitize_paths)
1360                                 files_from = sanitize_path(NULL, files_from, NULL, 0);
1361                         if (server_filter_list.head) {
1362                                 if (!*files_from)
1363                                         goto options_rejected;
1364                                 clean_fname(files_from, 1);
1365                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1366                                         goto options_rejected;
1367                         }
1368                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1369                         if (filesfrom_fd < 0) {
1370                                 snprintf(err_buf, sizeof err_buf,
1371                                         "failed to open files-from file %s: %s\n",
1372                                         files_from, strerror(errno));
1373                                 return 0;
1374                         }
1375                 }
1376         }
1377
1378         am_starting_up = 0;
1379
1380         return 1;
1381 }
1382
1383
1384 /**
1385  * Construct a filtered list of options to pass through from the
1386  * client to the server.
1387  *
1388  * This involves setting options that will tell the server how to
1389  * behave, and also filtering out options that are processed only
1390  * locally.
1391  **/
1392 void server_options(char **args,int *argc)
1393 {
1394         static char argstr[64];
1395         int ac = *argc;
1396         char *arg;
1397
1398         int i, x;
1399
1400         if (blocking_io == -1)
1401                 blocking_io = 0;
1402
1403         args[ac++] = "--server";
1404
1405         if (daemon_over_rsh) {
1406                 args[ac++] = "--daemon";
1407                 *argc = ac;
1408                 /* if we're passing --daemon, we're done */
1409                 return;
1410         }
1411
1412         if (!am_sender)
1413                 args[ac++] = "--sender";
1414
1415         x = 1;
1416         argstr[0] = '-';
1417         for (i = 0; i < verbose; i++)
1418                 argstr[x++] = 'v';
1419
1420         /* the -q option is intentionally left out */
1421         if (make_backups)
1422                 argstr[x++] = 'b';
1423         if (update_only)
1424                 argstr[x++] = 'u';
1425         if (!do_xfers) /* NOT "dry_run"! */
1426                 argstr[x++] = 'n';
1427         if (preserve_links)
1428                 argstr[x++] = 'l';
1429         if (copy_links)
1430                 argstr[x++] = 'L';
1431         if (xfer_dirs > 1)
1432                 argstr[x++] = 'd';
1433         if (keep_dirlinks && am_sender)
1434                 argstr[x++] = 'K';
1435
1436         if (whole_file > 0)
1437                 argstr[x++] = 'W';
1438         /* We don't need to send --no-whole-file, because it's the
1439          * default for remote transfers, and in any case old versions
1440          * of rsync will not understand it. */
1441
1442         if (preserve_hard_links)
1443                 argstr[x++] = 'H';
1444         if (preserve_uid)
1445                 argstr[x++] = 'o';
1446         if (preserve_gid)
1447                 argstr[x++] = 'g';
1448         if (preserve_devices)
1449                 argstr[x++] = 'D';
1450         if (preserve_times)
1451                 argstr[x++] = 't';
1452         if (omit_dir_times == 2 && am_sender)
1453                 argstr[x++] = 'O';
1454         if (preserve_perms)
1455                 argstr[x++] = 'p';
1456         if (recurse)
1457                 argstr[x++] = 'r';
1458         if (always_checksum)
1459                 argstr[x++] = 'c';
1460         if (cvs_exclude)
1461                 argstr[x++] = 'C';
1462         if (ignore_times)
1463                 argstr[x++] = 'I';
1464         if (relative_paths)
1465                 argstr[x++] = 'R';
1466         if (one_file_system) {
1467                 argstr[x++] = 'x';
1468                 if (one_file_system > 1)
1469                         argstr[x++] = 'x';
1470         }
1471         if (sparse_files)
1472                 argstr[x++] = 'S';
1473         if (do_compression)
1474                 argstr[x++] = 'z';
1475
1476         /* This is a complete hack - blame Rusty.  FIXME!
1477          * This hack is only needed for older rsync versions that
1478          * don't understand the --list-only option. */
1479         if (list_only == 1 && !recurse)
1480                 argstr[x++] = 'r';
1481
1482         argstr[x] = 0;
1483
1484         if (x != 1)
1485                 args[ac++] = argstr;
1486
1487         if (list_only > 1)
1488                 args[ac++] = "--list-only";
1489
1490         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1491                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1492                         goto oom;
1493                 args[ac++] = arg;
1494         }
1495
1496         /* The server side doesn't use our log-format, but in certain
1497          * circumstances they need to know a little about the option. */
1498         if (log_format && am_sender) {
1499                 if (log_format_has_i > 1)
1500                         args[ac++] = "--log-format=%i%I";
1501                 else if (log_format_has_i)
1502                         args[ac++] = "--log-format=%i";
1503                 else if (log_format_has_o_or_i)
1504                         args[ac++] = "--log-format=%o";
1505                 else if (!verbose)
1506                         args[ac++] = "--log-format=X";
1507         }
1508
1509         if (block_size) {
1510                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1511                         goto oom;
1512                 args[ac++] = arg;
1513         }
1514
1515         if (max_delete && am_sender) {
1516                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1517                         goto oom;
1518                 args[ac++] = arg;
1519         }
1520
1521         if (min_size && am_sender) {
1522                 args[ac++] = "--min-size";
1523                 args[ac++] = min_size_arg;
1524         }
1525
1526         if (max_size && am_sender) {
1527                 args[ac++] = "--max-size";
1528                 args[ac++] = max_size_arg;
1529         }
1530
1531         if (io_timeout) {
1532                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1533                         goto oom;
1534                 args[ac++] = arg;
1535         }
1536
1537         if (bwlimit) {
1538                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1539                         goto oom;
1540                 args[ac++] = arg;
1541         }
1542
1543         if (backup_dir) {
1544                 args[ac++] = "--backup-dir";
1545                 args[ac++] = backup_dir;
1546         }
1547
1548         /* Only send --suffix if it specifies a non-default value. */
1549         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1550                 /* We use the following syntax to avoid weirdness with '~'. */
1551                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1552                         goto oom;
1553                 args[ac++] = arg;
1554         }
1555
1556         if (am_sender) {
1557                 if (delete_excluded)
1558                         args[ac++] = "--delete-excluded";
1559                 else if (delete_before == 1 || delete_after)
1560                         args[ac++] = "--delete";
1561                 if (delete_before > 1)
1562                         args[ac++] = "--delete-before";
1563                 if (delete_during)
1564                         args[ac++] = "--delete-during";
1565                 if (delete_after)
1566                         args[ac++] = "--delete-after";
1567                 if (force_delete)
1568                         args[ac++] = "--force";
1569                 if (write_batch < 0)
1570                         args[ac++] = "--only-write-batch=X";
1571         }
1572
1573         if (size_only)
1574                 args[ac++] = "--size-only";
1575
1576         if (modify_window_set) {
1577                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1578                         goto oom;
1579                 args[ac++] = arg;
1580         }
1581
1582         if (checksum_seed) {
1583                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1584                         goto oom;
1585                 args[ac++] = arg;
1586         }
1587
1588         if (partial_dir && am_sender) {
1589                 if (partial_dir != partialdir_for_delayupdate) {
1590                         args[ac++] = "--partial-dir";
1591                         args[ac++] = partial_dir;
1592                 }
1593                 if (delay_updates)
1594                         args[ac++] = "--delay-updates";
1595         } else if (keep_partial)
1596                 args[ac++] = "--partial";
1597
1598         if (ignore_errors)
1599                 args[ac++] = "--ignore-errors";
1600
1601         if (copy_unsafe_links)
1602                 args[ac++] = "--copy-unsafe-links";
1603
1604         if (safe_symlinks)
1605                 args[ac++] = "--safe-links";
1606
1607         if (numeric_ids)
1608                 args[ac++] = "--numeric-ids";
1609
1610         if (ignore_existing && am_sender)
1611                 args[ac++] = "--ignore-existing";
1612
1613         /* Backward compatibility: send --existing, not --ignore-non-existing. */
1614         if (ignore_non_existing && am_sender)
1615                 args[ac++] = "--existing";
1616
1617         if (append_mode)
1618                 args[ac++] = "--append";
1619         else if (inplace)
1620                 args[ac++] = "--inplace";
1621
1622         if (tmpdir) {
1623                 args[ac++] = "--temp-dir";
1624                 args[ac++] = tmpdir;
1625         }
1626
1627         if (basis_dir[0] && am_sender) {
1628                 /* the server only needs this option if it is not the sender,
1629                  *   and it may be an older version that doesn't know this
1630                  *   option, so don't send it if client is the sender.
1631                  */
1632                 int i;
1633                 for (i = 0; i < basis_dir_cnt; i++) {
1634                         args[ac++] = dest_option;
1635                         args[ac++] = basis_dir[i];
1636                 }
1637         }
1638
1639         if (chmod_mode && !am_sender) {
1640                 args[ac++] = "--chmod";
1641                 args[ac++] = chmod_mode;
1642         }
1643
1644         if (files_from && (!am_sender || filesfrom_host)) {
1645                 if (filesfrom_host) {
1646                         args[ac++] = "--files-from";
1647                         args[ac++] = files_from;
1648                         if (eol_nulls)
1649                                 args[ac++] = "--from0";
1650                 } else {
1651                         args[ac++] = "--files-from=-";
1652                         args[ac++] = "--from0";
1653                 }
1654                 if (!relative_paths)
1655                         args[ac++] = "--no-relative";
1656         }
1657         if (relative_paths && !implied_dirs && !am_sender)
1658                 args[ac++] = "--no-implied-dirs";
1659
1660         if (fuzzy_basis && am_sender)
1661                 args[ac++] = "--fuzzy";
1662
1663         if (remove_sent_files)
1664                 args[ac++] = "--remove-sent-files";
1665
1666         *argc = ac;
1667         return;
1668
1669     oom:
1670         out_of_memory("server_options");
1671 }
1672
1673 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
1674  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
1675  * memory with the HOST.  If a daemon-accessing spec was specified, the value
1676  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
1677  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
1678  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
1679  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
1680 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
1681 {
1682         char *p;
1683         int not_host;
1684
1685         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
1686                 char *path;
1687                 int hostlen;
1688                 s += strlen(URL_PREFIX);
1689                 if ((p = strchr(s, '/')) != NULL) {
1690                         hostlen = p - s;
1691                         path = p + 1;
1692                 } else {
1693                         hostlen = strlen(s);
1694                         path = "";
1695                 }
1696                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
1697                         s++;
1698                         hostlen = p - s;
1699                         if (p[1] == ':')
1700                                 *port_ptr = atoi(p+2);
1701                 } else {
1702                         if ((p = strchr(s, ':')) != NULL) {
1703                                 hostlen = p - s;
1704                                 *port_ptr = atoi(p+1);
1705                         }
1706                 }
1707                 if (!*port_ptr)
1708                         *port_ptr = RSYNC_PORT;
1709                 *host_ptr = new_array(char, hostlen + 1);
1710                 strlcpy(*host_ptr, s, hostlen + 1);
1711                 return path;
1712         }
1713
1714         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
1715                 s++;
1716                 *p = '\0';
1717                 not_host = strchr(s, '/') || !strchr(s, ':');
1718                 *p = ']';
1719                 if (not_host)
1720                         return NULL;
1721                 p++;
1722         } else {
1723                 if (!(p = strchr(s, ':')))
1724                         return NULL;
1725                 *p = '\0';
1726                 not_host = strchr(s, '/') != NULL;
1727                 *p = ':';
1728                 if (not_host)
1729                         return NULL;
1730         }
1731
1732         *host_ptr = new_array(char, p - s + 1);
1733         strlcpy(*host_ptr, s, p - s + 1);
1734
1735         if (p[1] == ':') {
1736                 if (port_ptr && !*port_ptr)
1737                         *port_ptr = RSYNC_PORT;
1738                 return p + 2;
1739         }
1740         if (port_ptr)
1741                 *port_ptr = 0;
1742
1743         return p + 1;
1744 }