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_executability = 0;
  49 int preserve_devices = 0;
  50 int preserve_specials = 0;
  51 int preserve_uid = 0;
  52 int preserve_gid = 0;
  53 int preserve_times = 0;
  54 int omit_dir_times = 0;
  55 int update_only = 0;
  56 int cvs_exclude = 0;
  57 int dry_run = 0;
  58 int do_xfers = 1;
  59 int ignore_times = 0;
  60 int saw_delete_opt = 0;
  61 int saw_delete_excluded_opt = 0;
  62 int delete_mode = 0;
  63 int delete_during = 0;
  64 int delete_before = 0;
  65 int delete_after = 0;
  66 int delete_excluded = 0;
  67 int remove_sent_files = 0;
  68 int one_file_system = 0;
  69 int protocol_version = PROTOCOL_VERSION;
  70 int sparse_files = 0;
  71 int do_compression = 0;
  72 int def_compress_level = Z_DEFAULT_COMPRESSION;
  73 int am_root = 0;
  74 int am_server = 0;
  75 int am_sender = 0;
  76 int am_generator = 0;
  77 int am_starting_up = 1;
  78 int orig_umask = 0;
  79 int relative_paths = -1;
  80 int implied_dirs = 1;
  81 int numeric_ids = 0;
  82 int allow_8bit_chars = 0;
  83 int force_delete = 0;
  84 int io_timeout = 0;
  85 int allowed_lull = 0;
  86 int prune_empty_dirs = 0;
  87 char *files_from = NULL;
  88 int filesfrom_fd = -1;
  89 char *filesfrom_host = NULL;
  90 int eol_nulls = 0;
  91 int human_readable = 0;
  92 int recurse = 0;
  93 int xfer_dirs = -1;
  94 int am_daemon = 0;
  95 int daemon_over_rsh = 0;
  96 int do_stats = 0;
  97 int do_progress = 0;
  98 int keep_partial = 0;
  99 int safe_symlinks = 0;
 100 int copy_unsafe_links = 0;
 101 int size_only = 0;
 102 int daemon_bwlimit = 0;
 103 int bwlimit = 0;
 104 int fuzzy_basis = 0;
 105 size_t bwlimit_writemax = 0;
 106 int ignore_existing = 0;
 107 int ignore_non_existing = 0;
 108 int need_messages_from_generator = 0;
 109 int max_delete = 0;
 110 OFF_T max_size = 0;
 111 OFF_T min_size = 0;
 112 int ignore_errors = 0;
 113 int modify_window = 0;
 114 int blocking_io = -1;
 115 int checksum_seed = 0;
 116 int inplace = 0;
 117 int delay_updates = 0;
 118 long block_size = 0; /* "long" because popt can't set an int32. */
 119
 120
 121 /** Network address family. **/
 122 #ifdef INET6
 123 int default_af_hint = 0;        /* Any protocol */
 124 #else
 125 int default_af_hint = AF_INET;  /* Must use IPv4 */
 126 #endif
 127
 128 /** Do not go into the background when run as --daemon.  Good
 129  * for debugging and required for running as a service on W32,
 130  * or under Unix process-monitors. **/
 131 int no_detach
 132 #if defined _WIN32 || defined __WIN32__
 133         = 1;
 134 #else
 135         = 0;
 136 #endif
 137
 138 int write_batch = 0;
 139 int read_batch = 0;
 140 int backup_dir_len = 0;
 141 int backup_suffix_len;
 142 unsigned int backup_dir_remainder;
 143
 144 char *backup_suffix = NULL;
 145 char *tmpdir = NULL;
 146 char *partial_dir = NULL;
 147 char *basis_dir[MAX_BASIS_DIRS+1];
 148 char *config_file = NULL;
 149 char *shell_cmd = NULL;
 150 char *log_format = NULL;
 151 char *password_file = NULL;
 152 char *rsync_path = RSYNC_PATH;
 153 char *backup_dir = NULL;
 154 char backup_dir_buf[MAXPATHLEN];
 155 char *sockopts = NULL;
 156 int rsync_port = 0;
 157 int compare_dest = 0;
 158 int copy_dest = 0;
 159 int link_dest = 0;
 160 int basis_dir_cnt = 0;
 161 char *dest_option = NULL;
 162
 163 int verbose = 0;
 164 int quiet = 0;
 165 int log_before_transfer = 0;
 166 int log_format_has_i = 0;
 167 int log_format_has_o_or_i = 0;
 168 int always_checksum = 0;
 169 int list_only = 0;
 170
 171 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 172 char *batch_name = NULL;
 173
 174 struct chmod_mode_struct *chmod_modes = NULL;
 175
 176 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 177 static int F_option_cnt = 0;
 178 static int modify_window_set;
 179 static int itemize_changes = 0;
 180 static int refused_delete, refused_archive_part, refused_compress;
 181 static int refused_partial, refused_progress, refused_delete_before;
 182 static int refused_inplace;
 183 static char *max_size_arg, *min_size_arg;
 184 static char tmp_partialdir[] = ".~tmp~";
 185
 186 /** Local address to bind.  As a character string because it's
 187  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 188  * address, or a hostname. **/
 189 char *bind_address;
 190
 191
 192 static void print_rsync_version(enum logcode f)
 193 {
 194         char const *got_socketpair = "no ";
 195         char const *have_inplace = "no ";
 196         char const *hardlinks = "no ";
 197         char const *links = "no ";
 198         char const *ipv6 = "no ";
 199         STRUCT_STAT *dumstat;
 200
 201 #ifdef HAVE_SOCKETPAIR
 202         got_socketpair = "";
 203 #endif
 204
 205 #ifdef HAVE_FTRUNCATE
 206         have_inplace = "";
 207 #endif
 208
 209 #ifdef SUPPORT_HARD_LINKS
 210         hardlinks = "";
 211 #endif
 212
 213 #ifdef SUPPORT_LINKS
 214         links = "";
 215 #endif
 216
 217 #ifdef INET6
 218         ipv6 = "";
 219 #endif
 220
 221         rprintf(f, "%s  version %s  protocol version %d\n",
 222                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
 223         rprintf(f, "Copyright (C) 1996-2006 by Andrew Tridgell, Wayne Davison, and others.\n");
 224         rprintf(f, "<http://rsync.samba.org/>\n");
 225         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
 226                 "%shard links, %ssymlinks, batchfiles,\n",
 227                 (int) (sizeof (OFF_T) * 8),
 228                 got_socketpair, hardlinks, links);
 229
 230         /* Note that this field may not have type ino_t.  It depends
 231          * on the complicated interaction between largefile feature
 232          * macros. */
 233         rprintf(f, "              %sinplace, %sIPv6, "
 234                 "%d-bit system inums, %d-bit internal inums\n",
 235                 have_inplace, ipv6,
 236                 (int) (sizeof dumstat->st_ino * 8),
 237                 (int) (sizeof (int64) * 8));
 238 #ifdef MAINTAINER_MODE
 239         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 240 #endif
 241
 242 #if SIZEOF_INT64 < 8
 243         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 244 #endif
 245         if (sizeof (int64) != SIZEOF_INT64) {
 246                 rprintf(f,
 247                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 248                         (int) SIZEOF_INT64, (int) sizeof (int64));
 249         }
 250
 251         rprintf(f,"\nrsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 252         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 253         rprintf(f,"General Public Licence for details.\n");
 254 }
 255
 256
 257 void usage(enum logcode F)
 258 {
 259   print_rsync_version(F);
 260
 261   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\n");
 262   rprintf(F,"via a fast differencing algorithm.\n");
 263
 264   rprintf(F,"\nUsage: rsync [OPTION]... SRC [SRC]... DEST\n");
 265   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 266   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 267   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 268   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 269   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 270   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 271   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 272   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 273   rprintf(F,"\nOptions\n");
 274   rprintf(F," -v, --verbose               increase verbosity\n");
 275   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 276   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 277   rprintf(F," -a, --archive               archive mode; same as -rlptgoD (no -H)\n");
 278   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 279   rprintf(F," -r, --recursive             recurse into directories\n");
 280   rprintf(F," -R, --relative              use relative path names\n");
 281   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 282   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 283   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 284   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 285   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 286   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 287   rprintf(F,"     --append                append data onto shorter files\n");
 288   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 289   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 290   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 291   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 292   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 293   rprintf(F," -H, --hard-links            preserve hard links\n");
 294   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 295   rprintf(F," -p, --perms                 preserve permissions\n");
 296   rprintf(F," -E, --executability         preserve the file's executability\n");
 297   rprintf(F,"     --chmod=CHMOD           change destination permissions\n");
 298   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 299   rprintf(F," -g, --group                 preserve group\n");
 300   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 301   rprintf(F,"     --specials              preserve special files\n");
 302   rprintf(F," -D                          same as --devices --specials\n");
 303   rprintf(F," -t, --times                 preserve times\n");
 304   rprintf(F," -O, --omit-dir-times        omit directories when preserving times\n");
 305   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 306   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 307   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 308   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
 309   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 310   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 311   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 312   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 313   rprintf(F,"     --existing              ignore non-existing files on receiving side\n");
 314   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
 315   rprintf(F,"     --remove-sent-files     sent files/symlinks are removed from sending side\n");
 316   rprintf(F,"     --del                   an alias for --delete-during\n");
 317   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 318   rprintf(F,"     --delete-before         receiver deletes before transfer (default)\n");
 319   rprintf(F,"     --delete-during         receiver deletes during transfer, not before\n");
 320   rprintf(F,"     --delete-after          receiver deletes after transfer, not before\n");
 321   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
 322   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 323   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 324   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 325   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 326   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 327   rprintf(F,"     --partial               keep partially transferred files\n");
 328   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 329   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 330   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 331   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 332   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
 333   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 334   rprintf(F,"     --size-only             skip files that match in size\n");
 335   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 336   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 337   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 338   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 339   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 340   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 341   rprintf(F," -z, --compress              compress file data during the transfer\n");
 342   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 343   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 344   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 345   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 346   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 347   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 348   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 349   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 350   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 351   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 352   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 353   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 354   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 355   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 356   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 357   rprintf(F,"     --stats                 give some file-transfer stats\n");
 358   rprintf(F," -8, --8-bit                 leave high-bit chars unescaped in output\n");
 359   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 360   rprintf(F,"     --si                    like human-readable, but use powers of 1000\n");
 361   rprintf(F,"     --progress              show progress during transfer\n");
 362   rprintf(F," -P                          same as --partial --progress\n");
 363   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 364   rprintf(F,"     --log-format=FORMAT     output filenames using the specified format\n");
 365   rprintf(F,"     --password-file=FILE    read password from FILE\n");
 366   rprintf(F,"     --list-only             list the files instead of copying them\n");
 367   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 368   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 369   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 370   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 371   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 372 #ifdef INET6
 373   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 374   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 375 #endif
 376   rprintf(F,"     --version               print version number\n");
 377   rprintf(F,"     --help                  show this help screen\n");
 378
 379   rprintf(F,"\nUse \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 380   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 381   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 382 }
 383
 384 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 385       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 386       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 387       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 388       OPT_NO_D,
 389       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 390
 391 static struct poptOption long_options[] = {
 392   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 393   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 394   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 395   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 396   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 397   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 398   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 399   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 400   {"human-readable",  'h', POPT_ARG_VAL,    &human_readable, 1, 0, 0},
 401   {"si",               0,  POPT_ARG_VAL,    &human_readable, 2, 0, 0},
 402   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 403   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 404   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 405   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 406   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 407   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 408   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 409   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 410   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 411   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 412   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 413   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 414   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 415   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 416   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 417   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 2, 0, 0 },
 418   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 419   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 420   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 421   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 422   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 423   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 424   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 425   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 426   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 427   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 428   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 429   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 430   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 431   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 432   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 433   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 434   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 435   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 436   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 437   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 438   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 439   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 440   {"hard-links",      'H', POPT_ARG_NONE,   &preserve_hard_links, 0, 0, 0 },
 441   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 442   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 443   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 444   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 445   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 446   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 447   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 448   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 449   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 450   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 451   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 452   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 453   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 454   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 455   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 456   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 457   {"append",           0,  POPT_ARG_VAL,    &append_mode, 1, 0, 0 },
 458   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 459   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 460   {"delete-before",    0,  POPT_ARG_VAL,    &delete_before, 2, 0, 0 },
 461   {"delete-during",    0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 462   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 463   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 464   {"remove-sent-files",0,  POPT_ARG_NONE,   &remove_sent_files, 0, 0, 0 },
 465   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 466   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 467   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 468   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 469   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 470   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 471   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 472   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 473   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 474   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 475   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 476   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 477   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 478   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
 479   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 480   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 481   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 482   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 483   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
 484   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 485   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 486   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 487   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 488   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 489   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 490   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 491   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 492   {"delay-updates",    0,  POPT_ARG_NONE,   &delay_updates, 0, 0, 0 },
 493   {"prune-empty-dirs",'m', POPT_ARG_NONE,   &prune_empty_dirs, 0, 0, 0 },
 494   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
 495   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 496   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 497   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
 498   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 499   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 500   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 501   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 502   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 503   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 504   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 505   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
 506   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
 507   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 508   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 509   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 510   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 511 #ifdef INET6
 512   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 513   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 514 #endif
 515   {"8-bit",           '8', POPT_ARG_NONE,   &allow_8bit_chars, 0, 0, 0 },
 516   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 517   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 518   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 519   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 520   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 521   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 522   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 523   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 524   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 525   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 526   /* All the following options switch us into daemon-mode option-parsing. */
 527   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 528   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 529   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 530   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 531   {0,0,0,0, 0, 0, 0}
 532 };
 533
 534 static void daemon_usage(enum logcode F)
 535 {
 536   print_rsync_version(F);
 537
 538   rprintf(F,"\nUsage: rsync --daemon [OPTION]...\n");
 539   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 540   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 541   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 542   rprintf(F,"     --no-detach             do not detach from the parent\n");
 543   rprintf(F,"     --port=PORT             listen on alternate port number\n");
 544   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 545   rprintf(F," -v, --verbose               increase verbosity\n");
 546 #ifdef INET6
 547   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 548   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 549 #endif
 550   rprintf(F,"     --help                  show this help screen\n");
 551
 552   rprintf(F,"\nIf you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 553   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 554 }
 555
 556 static struct poptOption long_daemon_options[] = {
 557   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 558   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 559   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
 560   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 561   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 562 #ifdef INET6
 563   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 564   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 565 #endif
 566   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
 567   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
 568   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 569   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 570   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 571   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 572   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 573   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 574   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 575   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 576   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 577   {0,0,0,0, 0, 0, 0}
 578 };
 579
 580
 581 static char err_buf[200];
 582
 583
 584 /**
 585  * Store the option error message, if any, so that we can log the
 586  * connection attempt (which requires parsing the options), and then
 587  * show the error later on.
 588  **/
 589 void option_error(void)
 590 {
 591         if (!err_buf[0]) {
 592                 strcpy(err_buf, "Error parsing options: "
 593                     "option may be supported on client but not on server?\n");
 594         }
 595
 596         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 597 }
 598
 599
 600 /**
 601  * Tweak the option table to disable all options that the rsyncd.conf
 602  * file has told us to refuse.
 603  **/
 604 static void set_refuse_options(char *bp)
 605 {
 606         struct poptOption *op;
 607         char *cp, shortname[2];
 608         int is_wild, found_match;
 609
 610         shortname[1] = '\0';
 611
 612         while (1) {
 613                 while (*bp == ' ') bp++;
 614                 if (!*bp)
 615                         break;
 616                 if ((cp = strchr(bp, ' ')) != NULL)
 617                         *cp= '\0';
 618                 is_wild = strpbrk(bp, "*?[") != NULL;
 619                 found_match = 0;
 620                 for (op = long_options; ; op++) {
 621                         *shortname = op->shortName;
 622                         if (!op->longName && !*shortname)
 623                                 break;
 624                         if ((op->longName && wildmatch(bp, op->longName))
 625                             || (*shortname && wildmatch(bp, shortname))) {
 626                                 if (op->argInfo == POPT_ARG_VAL)
 627                                         op->argInfo = POPT_ARG_NONE;
 628                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 629                                 found_match = 1;
 630                                 /* These flags are set to let us easily check
 631                                  * an implied option later in the code. */
 632                                 switch (*shortname) {
 633                                 case 'r': case 'd': case 'l': case 'p':
 634                                 case 't': case 'g': case 'o': case 'D':
 635                                         refused_archive_part = op->val;
 636                                         break;
 637                                 case 'z':
 638                                         refused_compress = op->val;
 639                                         break;
 640                                 case '\0':
 641                                         if (wildmatch("delete", op->longName))
 642                                                 refused_delete = op->val;
 643                                         else if (wildmatch("delete-before", op->longName))
 644                                                 refused_delete_before = op->val;
 645                                         else if (wildmatch("partial", op->longName))
 646                                                 refused_partial = op->val;
 647                                         else if (wildmatch("progress", op->longName))
 648                                                 refused_progress = op->val;
 649                                         else if (wildmatch("inplace", op->longName))
 650                                                 refused_inplace = op->val;
 651                                         break;
 652                                 }
 653                                 if (!is_wild)
 654                                         break;
 655                         }
 656                 }
 657                 if (!found_match) {
 658                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 659                                 bp);
 660                 }
 661                 if (!cp)
 662                         break;
 663                 *cp = ' ';
 664                 bp = cp + 1;
 665         }
 666
 667         for (op = long_options; ; op++) {
 668                 *shortname = op->shortName;
 669                 if (!op->longName && !*shortname)
 670                         break;
 671                 if (op->val == OPT_DAEMON) {
 672                         if (op->argInfo == POPT_ARG_VAL)
 673                                 op->argInfo = POPT_ARG_NONE;
 674                         op->val = (op - long_options) + OPT_REFUSED_BASE;
 675                 }
 676         }
 677 }
 678
 679
 680 static int count_args(const char **argv)
 681 {
 682         int i = 0;
 683
 684         if (argv) {
 685                 while (argv[i] != NULL)
 686                         i++;
 687         }
 688
 689         return i;
 690 }
 691
 692
 693 static OFF_T parse_size_arg(char **size_arg, char def_suf)
 694 {
 695         int reps, mult, make_compatible = 0;
 696         const char *arg;
 697         OFF_T size = 1;
 698
 699         for (arg = *size_arg; isdigit(*(uchar*)arg); arg++) {}
 700         if (*arg == '.')
 701                 for (arg++; isdigit(*(uchar*)arg); arg++) {}
 702         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
 703         case 'b': case 'B':
 704                 reps = 0;
 705                 break;
 706         case 'k': case 'K':
 707                 reps = 1;
 708                 break;
 709         case 'm': case 'M':
 710                 reps = 2;
 711                 break;
 712         case 'g': case 'G':
 713                 reps = 3;
 714                 break;
 715         default:
 716                 return -1;
 717         }
 718         if (*arg == 'b' || *arg == 'B')
 719                 mult = 1000, make_compatible = 1, arg++;
 720         else if (!*arg || *arg == '+' || *arg == '-')
 721                 mult = 1024;
 722         else if (strncasecmp(arg, "ib", 2) == 0)
 723                 mult = 1024, arg += 2;
 724         else
 725                 return -1;
 726         while (reps--)
 727                 size *= mult;
 728         size *= atof(*size_arg);
 729         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
 730                 size += atoi(arg), make_compatible = 1, arg += 2;
 731         if (*arg)
 732                 return -1;
 733         if (size > 0 && make_compatible) {
 734                 /* We convert this manually because we may need %lld precision,
 735                  * and that's not a portable sprintf() escape. */
 736                 char buf[128], *s = buf + sizeof buf - 1;
 737                 OFF_T num = size;
 738                 *s = '\0';
 739                 while (num) {
 740                         *--s = (num % 10) + '0';
 741                         num /= 10;
 742                 }
 743                 if (!(*size_arg = strdup(s)))
 744                         out_of_memory("parse_size_arg");
 745         }
 746         return size;
 747 }
 748
 749
 750 static void create_refuse_error(int which)
 751 {
 752         /* The "which" value is the index + OPT_REFUSED_BASE. */
 753         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
 754         int n = snprintf(err_buf, sizeof err_buf,
 755                          "The server is configured to refuse --%s\n",
 756                          op->longName) - 1;
 757         if (op->shortName) {
 758                 snprintf(err_buf + n, sizeof err_buf - n,
 759                          " (-%c)\n", op->shortName);
 760         }
 761 }
 762
 763
 764 /**
 765  * Process command line arguments.  Called on both local and remote.
 766  *
 767  * @retval 1 if all options are OK; with globals set to appropriate
 768  * values
 769  *
 770  * @retval 0 on error, with err_buf containing an explanation
 771  **/
 772 int parse_arguments(int *argc, const char ***argv, int frommain)
 773 {
 774         int opt;
 775         char *ref = lp_refuse_options(module_id);
 776         const char *arg;
 777         poptContext pc;
 778
 779         if (ref && *ref)
 780                 set_refuse_options(ref);
 781
 782         /* TODO: Call poptReadDefaultConfig; handle errors. */
 783
 784         /* The context leaks in case of an error, but if there's a
 785          * problem we always exit anyhow. */
 786         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
 787         poptReadDefaultConfig(pc, 0);
 788
 789         while ((opt = poptGetNextOpt(pc)) != -1) {
 790                 /* most options are handled automatically by popt;
 791                  * only special cases are returned and listed here. */
 792
 793                 switch (opt) {
 794                 case OPT_VERSION:
 795                         print_rsync_version(FINFO);
 796                         exit_cleanup(0);
 797
 798                 case OPT_SERVER:
 799                         if (!am_server) {
 800                                 /* Disable popt aliases on the server side and
 801                                  * then start parsing the options again. */
 802                                 poptFreeContext(pc);
 803                                 pc = poptGetContext(RSYNC_NAME, *argc, *argv,
 804                                                     long_options, 0);
 805                                 am_server = 1;
 806                         }
 807                         break;
 808
 809                 case OPT_SENDER:
 810                         if (!am_server) {
 811                                 usage(FERROR);
 812                                 exit_cleanup(RERR_SYNTAX);
 813                         }
 814                         am_sender = 1;
 815                         break;
 816
 817                 case OPT_DAEMON:
 818                         if (am_daemon) {
 819                                 strcpy(err_buf, "Attempt to hack rsync thwarted!\n");
 820                                 return 0;
 821                         }
 822                         poptFreeContext(pc);
 823                         pc = poptGetContext(RSYNC_NAME, *argc, *argv,
 824                                             long_daemon_options, 0);
 825                         while ((opt = poptGetNextOpt(pc)) != -1) {
 826                                 switch (opt) {
 827                                 case 'h':
 828                                         daemon_usage(FINFO);
 829                                         exit_cleanup(0);
 830
 831                                 case 'v':
 832                                         verbose++;
 833                                         break;
 834
 835                                 default:
 836                                         rprintf(FERROR,
 837                                             "rsync: %s: %s (in daemon mode)\n",
 838                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 839                                             poptStrerror(opt));
 840                                         goto daemon_error;
 841                                 }
 842                         }
 843
 844                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 845                                 snprintf(err_buf, sizeof err_buf,
 846                                          "the --temp-dir path is WAY too long.\n");
 847                                 return 0;
 848                         }
 849
 850                         if (!daemon_opt) {
 851                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
 852                             daemon_error:
 853                                 rprintf(FERROR,
 854                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
 855                                 exit_cleanup(RERR_SYNTAX);
 856                         }
 857
 858                         *argv = poptGetArgs(pc);
 859                         *argc = count_args(*argv);
 860                         am_starting_up = 0;
 861                         daemon_opt = 0;
 862                         am_daemon = 1;
 863                         return 1;
 864
 865                 case OPT_MODIFY_WINDOW:
 866                         /* The value has already been set by popt, but
 867                          * we need to remember that we're using a
 868                          * non-default setting. */
 869                         modify_window_set = 1;
 870                         break;
 871
 872                 case OPT_FILTER:
 873                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
 874                         break;
 875
 876                 case OPT_EXCLUDE:
 877                         parse_rule(&filter_list, poptGetOptArg(pc),
 878                                    0, XFLG_OLD_PREFIXES);
 879                         break;
 880
 881                 case OPT_INCLUDE:
 882                         parse_rule(&filter_list, poptGetOptArg(pc),
 883                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
 884                         break;
 885
 886                 case OPT_EXCLUDE_FROM:
 887                 case OPT_INCLUDE_FROM:
 888                         arg = poptGetOptArg(pc);
 889                         if (sanitize_paths)
 890                                 arg = sanitize_path(NULL, arg, NULL, 0);
 891                         if (server_filter_list.head) {
 892                                 char *cp = (char *)arg;
 893                                 if (!*cp)
 894                                         goto options_rejected;
 895                                 clean_fname(cp, 1);
 896                                 if (check_filter(&server_filter_list, cp, 0) < 0)
 897                                         goto options_rejected;
 898                         }
 899                         parse_filter_file(&filter_list, arg,
 900                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
 901                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
 902                         break;
 903
 904                 case 'a':
 905                         if (refused_archive_part) {
 906                                 create_refuse_error(refused_archive_part);
 907                                 return 0;
 908                         }
 909                         if (!recurse) /* preserve recurse == 2 */
 910                                 recurse = 1;
 911 #ifdef SUPPORT_LINKS
 912                         preserve_links = 1;
 913 #endif
 914                         preserve_perms = 1;
 915                         preserve_times = 1;
 916                         preserve_gid = 1;
 917                         preserve_uid = 1;
 918                         preserve_devices = 1;
 919                         preserve_specials = 1;
 920                         break;
 921
 922                 case 'D':
 923                         preserve_devices = preserve_specials = 1;
 924                         break;
 925
 926                 case OPT_NO_D:
 927                         preserve_devices = preserve_specials = 0;
 928                         break;
 929
 930                 case 'i':
 931                         itemize_changes++;
 932                         break;
 933
 934                 case 'v':
 935                         verbose++;
 936                         break;
 937
 938                 case 'q':
 939                         if (frommain)
 940                                 quiet++;
 941                         break;
 942
 943                 case 'x':
 944                         one_file_system++;
 945                         break;
 946
 947                 case 'F':
 948                         switch (++F_option_cnt) {
 949                         case 1:
 950                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
 951                                 break;
 952                         case 2:
 953                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
 954                                 break;
 955                         }
 956                         break;
 957
 958                 case 'P':
 959                         if (refused_partial || refused_progress) {
 960                                 create_refuse_error(refused_partial
 961                                     ? refused_partial : refused_progress);
 962                                 return 0;
 963                         }
 964                         do_progress = 1;
 965                         keep_partial = 1;
 966                         break;
 967
 968                 case 'z':
 969                         if (def_compress_level < Z_DEFAULT_COMPRESSION
 970                          || def_compress_level > Z_BEST_COMPRESSION) {
 971                                 snprintf(err_buf, sizeof err_buf,
 972                                         "--compress-level value is invalid: %d\n",
 973                                         def_compress_level);
 974                                 return 0;
 975                         }
 976                         do_compression = def_compress_level != Z_NO_COMPRESSION;
 977                         if (do_compression && refused_compress) {
 978                                 create_refuse_error(refused_compress);
 979                                 return 0;
 980                         }
 981                         break;
 982
 983                 case OPT_WRITE_BATCH:
 984                         /* batch_name is already set */
 985                         write_batch = 1;
 986                         break;
 987
 988                 case OPT_ONLY_WRITE_BATCH:
 989                         /* batch_name is already set */
 990                         write_batch = -1;
 991                         break;
 992
 993                 case OPT_READ_BATCH:
 994                         /* batch_name is already set */
 995                         read_batch = 1;
 996                         break;
 997
 998                 case OPT_MAX_SIZE:
 999                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1000                                 snprintf(err_buf, sizeof err_buf,
1001                                         "--max-size value is invalid: %s\n",
1002                                         max_size_arg);
1003                                 return 0;
1004                         }
1005                         break;
1006
1007                 case OPT_MIN_SIZE:
1008                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1009                                 snprintf(err_buf, sizeof err_buf,
1010                                         "--min-size value is invalid: %s\n",
1011                                         min_size_arg);
1012                                 return 0;
1013                         }
1014                         break;
1015
1016                 case OPT_LINK_DEST:
1017 #ifdef HAVE_LINK
1018                         link_dest = 1;
1019                         dest_option = "--link-dest";
1020                         goto set_dest_dir;
1021 #else
1022                         snprintf(err_buf, sizeof err_buf,
1023                                  "hard links are not supported on this %s\n",
1024                                  am_server ? "server" : "client");
1025                         return 0;
1026 #endif
1027
1028                 case OPT_COPY_DEST:
1029                         copy_dest = 1;
1030                         dest_option = "--copy-dest";
1031                         goto set_dest_dir;
1032
1033                 case OPT_COMPARE_DEST:
1034                         compare_dest = 1;
1035                         dest_option = "--compare-dest";
1036                 set_dest_dir:
1037                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1038                                 snprintf(err_buf, sizeof err_buf,
1039                                         "ERROR: at most %d %s args may be specified\n",
1040                                         MAX_BASIS_DIRS, dest_option);
1041                                 return 0;
1042                         }
1043                         arg = poptGetOptArg(pc);
1044                         if (sanitize_paths)
1045                                 arg = sanitize_path(NULL, arg, NULL, 0);
1046                         basis_dir[basis_dir_cnt++] = (char *)arg;
1047                         break;
1048
1049                 case OPT_CHMOD:
1050                         arg = poptGetOptArg(pc);
1051                         if (!parse_chmod(arg, &chmod_modes)) {
1052                                 snprintf(err_buf, sizeof err_buf,
1053                                     "Invalid argument passed to --chmod (%s)\n",
1054                                     arg);
1055                                 return 0;
1056                         }
1057                         break;
1058
1059                 case OPT_HELP:
1060                         usage(FINFO);
1061                         exit_cleanup(0);
1062
1063                 default:
1064                         /* A large opt value means that set_refuse_options()
1065                          * turned this option off. */
1066                         if (opt >= OPT_REFUSED_BASE) {
1067                                 create_refuse_error(opt);
1068                                 return 0;
1069                         }
1070                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1071                                  am_server ? "on remote machine: " : "",
1072                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1073                                  poptStrerror(opt));
1074                         return 0;
1075                 }
1076         }
1077
1078         if (human_readable && *argc == 2) {
1079                 usage(FINFO);
1080                 exit_cleanup(0);
1081         }
1082
1083 #ifndef SUPPORT_LINKS
1084         if (preserve_links && !am_sender) {
1085                 snprintf(err_buf, sizeof err_buf,
1086                          "symlinks are not supported on this %s\n",
1087                          am_server ? "server" : "client");
1088                 return 0;
1089         }
1090 #endif
1091
1092 #ifndef SUPPORT_HARD_LINKS
1093         if (preserve_hard_links) {
1094                 snprintf(err_buf, sizeof err_buf,
1095                          "hard links are not supported on this %s\n",
1096                          am_server ? "server" : "client");
1097                 return 0;
1098         }
1099 #endif
1100
1101         if (write_batch && read_batch) {
1102                 snprintf(err_buf, sizeof err_buf,
1103                         "--write-batch and --read-batch can not be used together\n");
1104                 return 0;
1105         }
1106         if (write_batch > 0 || read_batch) {
1107                 if (am_server) {
1108                         rprintf(FINFO,
1109                                 "ignoring --%s-batch option sent to server\n",
1110                                 write_batch ? "write" : "read");
1111                         /* We don't actually exit_cleanup(), so that we can
1112                          * still service older version clients that still send
1113                          * batch args to server. */
1114                         read_batch = write_batch = 0;
1115                         batch_name = NULL;
1116                 } else if (dry_run)
1117                         write_batch = 0;
1118         }
1119         if (read_batch && files_from) {
1120                 snprintf(err_buf, sizeof err_buf,
1121                         "--read-batch cannot be used with --files-from\n");
1122                 return 0;
1123         }
1124         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1125                 snprintf(err_buf, sizeof err_buf,
1126                         "the batch-file name must be %d characters or less.\n",
1127                         MAX_BATCH_NAME_LEN);
1128                 return 0;
1129         }
1130
1131         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1132                 snprintf(err_buf, sizeof err_buf,
1133                          "the --temp-dir path is WAY too long.\n");
1134                 return 0;
1135         }
1136
1137         if (compare_dest + copy_dest + link_dest > 1) {
1138                 snprintf(err_buf, sizeof err_buf,
1139                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1140                 return 0;
1141         }
1142
1143         if (files_from) {
1144                 if (recurse == 1) /* preserve recurse == 2 */
1145                         recurse = 0;
1146                 if (xfer_dirs < 0)
1147                         xfer_dirs = 1;
1148         }
1149
1150         if (xfer_dirs < 1)
1151                 xfer_dirs = recurse || list_only;
1152
1153         if (relative_paths < 0)
1154                 relative_paths = files_from? 1 : 0;
1155         if (!relative_paths)
1156                 implied_dirs = 0;
1157
1158         if (!!delete_before + delete_during + delete_after > 1) {
1159                 snprintf(err_buf, sizeof err_buf,
1160                         "You may not combine multiple --delete-WHEN options.\n");
1161                 return 0;
1162         }
1163         if (delete_before || delete_during || delete_after)
1164                 delete_mode = 1;
1165         else if (delete_mode || delete_excluded) {
1166                 if (refused_delete_before) {
1167                         create_refuse_error(refused_delete_before);
1168                         return 0;
1169                 }
1170                 delete_mode = delete_before = 1;
1171         }
1172         saw_delete_opt = delete_mode;
1173         saw_delete_excluded_opt = delete_excluded;
1174         if (!xfer_dirs) {
1175                 delete_before = delete_during = delete_after = 0;
1176                 delete_mode = delete_excluded = 0;
1177         }
1178
1179         if (delete_mode && refused_delete) {
1180                 create_refuse_error(refused_delete);
1181                 return 0;
1182         }
1183
1184         if (remove_sent_files) {
1185                 /* We only want to infer this refusal of --remove-sent-files
1186                  * via the refusal of "delete", not any of the "delete-FOO"
1187                  * options. */
1188                 if (refused_delete && am_sender) {
1189                         create_refuse_error(refused_delete);
1190                         return 0;
1191                 }
1192                 need_messages_from_generator = 1;
1193         }
1194
1195         *argv = poptGetArgs(pc);
1196         *argc = count_args(*argv);
1197
1198         if (sanitize_paths) {
1199                 int i;
1200                 for (i = *argc; i-- > 0; )
1201                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
1202                 if (tmpdir)
1203                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
1204                 if (partial_dir)
1205                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
1206                 if (backup_dir)
1207                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
1208         }
1209         if (server_filter_list.head && !am_sender) {
1210                 struct filter_list_struct *elp = &server_filter_list;
1211                 int i;
1212                 if (tmpdir) {
1213                         if (!*tmpdir)
1214                                 goto options_rejected;
1215                         clean_fname(tmpdir, 1);
1216                         if (check_filter(elp, tmpdir, 1) < 0)
1217                                 goto options_rejected;
1218                 }
1219                 if (partial_dir && *partial_dir) {
1220                         clean_fname(partial_dir, 1);
1221                         if (check_filter(elp, partial_dir, 1) < 0)
1222                                 goto options_rejected;
1223                 }
1224                 for (i = 0; i < basis_dir_cnt; i++) {
1225                         if (!*basis_dir[i])
1226                                 goto options_rejected;
1227                         clean_fname(basis_dir[i], 1);
1228                         if (check_filter(elp, basis_dir[i], 1) < 0)
1229                                 goto options_rejected;
1230                 }
1231                 if (backup_dir) {
1232                         if (!*backup_dir)
1233                                 goto options_rejected;
1234                         clean_fname(backup_dir, 1);
1235                         if (check_filter(elp, backup_dir, 1) < 0) {
1236                             options_rejected:
1237                                 snprintf(err_buf, sizeof err_buf,
1238                                     "Your options have been rejected by the server.\n");
1239                                 return 0;
1240                         }
1241                 }
1242         }
1243
1244         if (!backup_suffix)
1245                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1246         backup_suffix_len = strlen(backup_suffix);
1247         if (strchr(backup_suffix, '/') != NULL) {
1248                 snprintf(err_buf, sizeof err_buf,
1249                         "--suffix cannot contain slashes: %s\n",
1250                         backup_suffix);
1251                 return 0;
1252         }
1253         if (backup_dir) {
1254                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1255                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1256                 if (backup_dir_remainder < 32) {
1257                         snprintf(err_buf, sizeof err_buf,
1258                                 "the --backup-dir path is WAY too long.\n");
1259                         return 0;
1260                 }
1261                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1262                         backup_dir_buf[backup_dir_len++] = '/';
1263                         backup_dir_buf[backup_dir_len] = '\0';
1264                 }
1265                 if (verbose > 1 && !am_sender)
1266                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1267         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1268                 snprintf(err_buf, sizeof err_buf,
1269                         "--suffix cannot be a null string without --backup-dir\n");
1270                 return 0;
1271         } else if (make_backups && delete_mode && !delete_excluded) {
1272                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1273                         "P *%s", backup_suffix);
1274                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1275         }
1276         if (make_backups && !backup_dir)
1277                 omit_dir_times = 1;
1278
1279         if (log_format) {
1280                 if (am_server && log_format_has(log_format, 'I'))
1281                         log_format_has_i = 2;
1282                 else if (log_format_has(log_format, 'i'))
1283                         log_format_has_i = itemize_changes | 1;
1284                 if (!log_format_has(log_format, 'b')
1285                  && !log_format_has(log_format, 'c'))
1286                         log_before_transfer = !am_server;
1287         } else if (itemize_changes) {
1288                 log_format = "%i %n%L";
1289                 log_format_has_i = itemize_changes;
1290                 log_before_transfer = !am_server;
1291         }
1292
1293         if ((do_progress || dry_run) && !verbose && !log_before_transfer
1294             && !am_server)
1295                 verbose = 1;
1296
1297         if (dry_run)
1298                 do_xfers = 0;
1299
1300         set_io_timeout(io_timeout);
1301
1302         if (verbose && !log_format) {
1303                 log_format = "%n%L";
1304                 log_before_transfer = !am_server;
1305         }
1306         if (log_format_has_i || log_format_has(log_format, 'o'))
1307                 log_format_has_o_or_i = 1;
1308
1309         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1310                 bwlimit = daemon_bwlimit;
1311         if (bwlimit) {
1312                 bwlimit_writemax = (size_t)bwlimit * 128;
1313                 if (bwlimit_writemax < 512)
1314                         bwlimit_writemax = 512;
1315         }
1316
1317         if (sparse_files && inplace) {
1318                 /* Note: we don't check for this below, because --append is
1319                  * OK with --sparse (as long as redos are handled right). */
1320                 snprintf(err_buf, sizeof err_buf,
1321                          "--sparse cannot be used with --inplace\n");
1322                 return 0;
1323         }
1324
1325         if (append_mode) {
1326                 if (whole_file > 0) {
1327                         snprintf(err_buf, sizeof err_buf,
1328                                  "--append cannot be used with --whole-file\n");
1329                         return 0;
1330                 }
1331                 if (refused_inplace) {
1332                         create_refuse_error(refused_inplace);
1333                         return 0;
1334                 }
1335                 inplace = 1;
1336         }
1337
1338         if (delay_updates && !partial_dir)
1339                 partial_dir = tmp_partialdir;
1340
1341         if (inplace) {
1342 #ifdef HAVE_FTRUNCATE
1343                 if (partial_dir) {
1344                         snprintf(err_buf, sizeof err_buf,
1345                                  "--%s cannot be used with --%s\n",
1346                                  append_mode ? "append" : "inplace",
1347                                  delay_updates ? "delay-updates" : "partial-dir");
1348                         return 0;
1349                 }
1350                 /* --inplace implies --partial for refusal purposes, but we
1351                  * clear the keep_partial flag for internal logic purposes. */
1352                 if (refused_partial) {
1353                         create_refuse_error(refused_partial);
1354                         return 0;
1355                 }
1356                 keep_partial = 0;
1357 #else
1358                 snprintf(err_buf, sizeof err_buf,
1359                          "--%s is not supported on this %s\n",
1360                          append_mode ? "append" : "inplace",
1361                          am_server ? "server" : "client");
1362                 return 0;
1363 #endif
1364         } else {
1365                 if (keep_partial && !partial_dir) {
1366                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1367                                 partial_dir = strdup(arg);
1368                 }
1369                 if (partial_dir) {
1370                         if (*partial_dir)
1371                                 clean_fname(partial_dir, 1);
1372                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1373                                 partial_dir = NULL;
1374                         else if (*partial_dir != '/') {
1375                                 parse_rule(&filter_list, partial_dir,
1376                                     MATCHFLG_NO_PREFIXES|MATCHFLG_DIRECTORY, 0);
1377                         }
1378                         if (!partial_dir && refused_partial) {
1379                                 create_refuse_error(refused_partial);
1380                                 return 0;
1381                         }
1382                         keep_partial = 1;
1383                 }
1384         }
1385
1386         if (files_from) {
1387                 char *h, *p;
1388                 int q;
1389                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
1390                         usage(FERROR);
1391                         exit_cleanup(RERR_SYNTAX);
1392                 }
1393                 if (strcmp(files_from, "-") == 0) {
1394                         filesfrom_fd = 0;
1395                         if (am_server)
1396                                 filesfrom_host = ""; /* reading from socket */
1397                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1398                         if (am_server) {
1399                                 snprintf(err_buf, sizeof err_buf,
1400                                         "The --files-from sent to the server cannot specify a host.\n");
1401                                 return 0;
1402                         }
1403                         files_from = p;
1404                         filesfrom_host = h;
1405                         if (strcmp(files_from, "-") == 0) {
1406                                 snprintf(err_buf, sizeof err_buf,
1407                                         "Invalid --files-from remote filename\n");
1408                                 return 0;
1409                         }
1410                 } else {
1411                         if (sanitize_paths)
1412                                 files_from = sanitize_path(NULL, files_from, NULL, 0);
1413                         if (server_filter_list.head) {
1414                                 if (!*files_from)
1415                                         goto options_rejected;
1416                                 clean_fname(files_from, 1);
1417                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1418                                         goto options_rejected;
1419                         }
1420                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1421                         if (filesfrom_fd < 0) {
1422                                 snprintf(err_buf, sizeof err_buf,
1423                                         "failed to open files-from file %s: %s\n",
1424                                         files_from, strerror(errno));
1425                                 return 0;
1426                         }
1427                 }
1428         }
1429
1430         am_starting_up = 0;
1431
1432         return 1;
1433 }
1434
1435
1436 /**
1437  * Construct a filtered list of options to pass through from the
1438  * client to the server.
1439  *
1440  * This involves setting options that will tell the server how to
1441  * behave, and also filtering out options that are processed only
1442  * locally.
1443  **/
1444 void server_options(char **args,int *argc)
1445 {
1446         static char argstr[64];
1447         int ac = *argc;
1448         char *arg;
1449
1450         int i, x;
1451
1452         if (blocking_io == -1)
1453                 blocking_io = 0;
1454
1455         /* This should always remain first on the server's command-line. */
1456         args[ac++] = "--server";
1457
1458         if (daemon_over_rsh) {
1459                 args[ac++] = "--daemon";
1460                 *argc = ac;
1461                 /* if we're passing --daemon, we're done */
1462                 return;
1463         }
1464
1465         if (!am_sender)
1466                 args[ac++] = "--sender";
1467
1468         x = 1;
1469         argstr[0] = '-';
1470         for (i = 0; i < verbose; i++)
1471                 argstr[x++] = 'v';
1472
1473         /* the -q option is intentionally left out */
1474         if (make_backups)
1475                 argstr[x++] = 'b';
1476         if (update_only)
1477                 argstr[x++] = 'u';
1478         if (!do_xfers) /* NOT "dry_run"! */
1479                 argstr[x++] = 'n';
1480         if (preserve_links)
1481                 argstr[x++] = 'l';
1482         if (copy_links)
1483                 argstr[x++] = 'L';
1484         if (xfer_dirs > (recurse || !delete_mode || !am_sender))
1485                 argstr[x++] = 'd';
1486         if (am_sender) {
1487                 if (keep_dirlinks)
1488                         argstr[x++] = 'K';
1489                 if (prune_empty_dirs)
1490                         argstr[x++] = 'm';
1491                 if (omit_dir_times == 2)
1492                         argstr[x++] = 'O';
1493         }
1494
1495         if (whole_file > 0)
1496                 argstr[x++] = 'W';
1497         /* We don't need to send --no-whole-file, because it's the
1498          * default for remote transfers, and in any case old versions
1499          * of rsync will not understand it. */
1500
1501         if (preserve_hard_links)
1502                 argstr[x++] = 'H';
1503         if (preserve_uid)
1504                 argstr[x++] = 'o';
1505         if (preserve_gid)
1506                 argstr[x++] = 'g';
1507         if (preserve_devices) /* ignore preserve_specials here */
1508                 argstr[x++] = 'D';
1509         if (preserve_times)
1510                 argstr[x++] = 't';
1511         if (preserve_perms)
1512                 argstr[x++] = 'p';
1513         else if (preserve_executability && am_sender)
1514                 argstr[x++] = 'E';
1515         if (recurse)
1516                 argstr[x++] = 'r';
1517         if (always_checksum)
1518                 argstr[x++] = 'c';
1519         if (cvs_exclude)
1520                 argstr[x++] = 'C';
1521         if (ignore_times)
1522                 argstr[x++] = 'I';
1523         if (relative_paths)
1524                 argstr[x++] = 'R';
1525         if (one_file_system) {
1526                 argstr[x++] = 'x';
1527                 if (one_file_system > 1)
1528                         argstr[x++] = 'x';
1529         }
1530         if (sparse_files)
1531                 argstr[x++] = 'S';
1532         if (do_compression)
1533                 argstr[x++] = 'z';
1534
1535         /* This is a complete hack - blame Rusty.  FIXME!
1536          * This hack is only needed for older rsync versions that
1537          * don't understand the --list-only option. */
1538         if (list_only == 1 && !recurse)
1539                 argstr[x++] = 'r';
1540
1541         argstr[x] = '\0';
1542
1543         if (x != 1)
1544                 args[ac++] = argstr;
1545
1546         if (list_only > 1)
1547                 args[ac++] = "--list-only";
1548
1549         /* This makes sure that the remote rsync can handle deleting with -d
1550          * sans -r because the --no-r option was added at the same time. */
1551         if (xfer_dirs && !recurse && delete_mode && am_sender)
1552                 args[ac++] = "--no-r";
1553
1554         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1555                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1556                         goto oom;
1557                 args[ac++] = arg;
1558         }
1559
1560         if (preserve_devices) {
1561                 /* Note: sending "--devices" would not be backward-compatible. */
1562                 if (!preserve_specials)
1563                         args[ac++] = "--no-specials"; /* -D is already set. */
1564         } else if (preserve_specials)
1565                 args[ac++] = "--specials";
1566
1567         /* The server side doesn't use our log-format, but in certain
1568          * circumstances they need to know a little about the option. */
1569         if (log_format && am_sender) {
1570                 if (log_format_has_i > 1)
1571                         args[ac++] = "--log-format=%i%I";
1572                 else if (log_format_has_i)
1573                         args[ac++] = "--log-format=%i";
1574                 else if (log_format_has_o_or_i)
1575                         args[ac++] = "--log-format=%o";
1576                 else if (!verbose)
1577                         args[ac++] = "--log-format=X";
1578         }
1579
1580         if (block_size) {
1581                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1582                         goto oom;
1583                 args[ac++] = arg;
1584         }
1585
1586         if (max_delete && am_sender) {
1587                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1588                         goto oom;
1589                 args[ac++] = arg;
1590         }
1591
1592         if (min_size && am_sender) {
1593                 args[ac++] = "--min-size";
1594                 args[ac++] = min_size_arg;
1595         }
1596
1597         if (max_size && am_sender) {
1598                 args[ac++] = "--max-size";
1599                 args[ac++] = max_size_arg;
1600         }
1601
1602         if (io_timeout) {
1603                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1604                         goto oom;
1605                 args[ac++] = arg;
1606         }
1607
1608         if (bwlimit) {
1609                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1610                         goto oom;
1611                 args[ac++] = arg;
1612         }
1613
1614         if (backup_dir) {
1615                 args[ac++] = "--backup-dir";
1616                 args[ac++] = backup_dir;
1617         }
1618
1619         /* Only send --suffix if it specifies a non-default value. */
1620         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1621                 /* We use the following syntax to avoid weirdness with '~'. */
1622                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1623                         goto oom;
1624                 args[ac++] = arg;
1625         }
1626
1627         if (am_sender) {
1628                 if (delete_excluded)
1629                         args[ac++] = "--delete-excluded";
1630                 else if (delete_before == 1 || delete_after)
1631                         args[ac++] = "--delete";
1632                 if (delete_before > 1)
1633                         args[ac++] = "--delete-before";
1634                 if (delete_during)
1635                         args[ac++] = "--delete-during";
1636                 if (delete_after)
1637                         args[ac++] = "--delete-after";
1638                 if (force_delete)
1639                         args[ac++] = "--force";
1640                 if (write_batch < 0)
1641                         args[ac++] = "--only-write-batch=X";
1642                 if (am_root > 1)
1643                         args[ac++] = "--super";
1644         }
1645
1646         if (size_only)
1647                 args[ac++] = "--size-only";
1648
1649         if (modify_window_set) {
1650                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1651                         goto oom;
1652                 args[ac++] = arg;
1653         }
1654
1655         if (checksum_seed) {
1656                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1657                         goto oom;
1658                 args[ac++] = arg;
1659         }
1660
1661         if (partial_dir && am_sender) {
1662                 if (partial_dir != tmp_partialdir) {
1663                         args[ac++] = "--partial-dir";
1664                         args[ac++] = partial_dir;
1665                 }
1666                 if (delay_updates)
1667                         args[ac++] = "--delay-updates";
1668         } else if (keep_partial && am_sender)
1669                 args[ac++] = "--partial";
1670
1671         if (ignore_errors)
1672                 args[ac++] = "--ignore-errors";
1673
1674         if (copy_unsafe_links)
1675                 args[ac++] = "--copy-unsafe-links";
1676
1677         if (safe_symlinks)
1678                 args[ac++] = "--safe-links";
1679
1680         if (numeric_ids)
1681                 args[ac++] = "--numeric-ids";
1682
1683         if (ignore_existing && am_sender)
1684                 args[ac++] = "--ignore-existing";
1685
1686         /* Backward compatibility: send --existing, not --ignore-non-existing. */
1687         if (ignore_non_existing && am_sender)
1688                 args[ac++] = "--existing";
1689
1690         if (append_mode)
1691                 args[ac++] = "--append";
1692         else if (inplace)
1693                 args[ac++] = "--inplace";
1694
1695         if (tmpdir && am_sender) {
1696                 args[ac++] = "--temp-dir";
1697                 args[ac++] = tmpdir;
1698         }
1699
1700         if (basis_dir[0] && am_sender) {
1701                 /* the server only needs this option if it is not the sender,
1702                  *   and it may be an older version that doesn't know this
1703                  *   option, so don't send it if client is the sender.
1704                  */
1705                 int i;
1706                 for (i = 0; i < basis_dir_cnt; i++) {
1707                         args[ac++] = dest_option;
1708                         args[ac++] = basis_dir[i];
1709                 }
1710         }
1711
1712         if (files_from && (!am_sender || filesfrom_host)) {
1713                 if (filesfrom_host) {
1714                         args[ac++] = "--files-from";
1715                         args[ac++] = files_from;
1716                         if (eol_nulls)
1717                                 args[ac++] = "--from0";
1718                 } else {
1719                         args[ac++] = "--files-from=-";
1720                         args[ac++] = "--from0";
1721                 }
1722                 if (!relative_paths)
1723                         args[ac++] = "--no-relative";
1724         }
1725         if (relative_paths && !implied_dirs && !am_sender)
1726                 args[ac++] = "--no-implied-dirs";
1727
1728         if (fuzzy_basis && am_sender)
1729                 args[ac++] = "--fuzzy";
1730
1731         if (remove_sent_files)
1732                 args[ac++] = "--remove-sent-files";
1733
1734         *argc = ac;
1735         return;
1736
1737     oom:
1738         out_of_memory("server_options");
1739 }
1740
1741 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
1742  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
1743  * memory with the HOST.  If a daemon-accessing spec was specified, the value
1744  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
1745  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
1746  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
1747  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
1748 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
1749 {
1750         char *p;
1751         int not_host;
1752
1753         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
1754                 char *path;
1755                 int hostlen;
1756                 s += strlen(URL_PREFIX);
1757                 if ((p = strchr(s, '/')) != NULL) {
1758                         hostlen = p - s;
1759                         path = p + 1;
1760                 } else {
1761                         hostlen = strlen(s);
1762                         path = "";
1763                 }
1764                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
1765                         s++;
1766                         hostlen = p - s;
1767                         if (p[1] == ':')
1768                                 *port_ptr = atoi(p+2);
1769                 } else {
1770                         if ((p = strchr(s, ':')) != NULL) {
1771                                 hostlen = p - s;
1772                                 *port_ptr = atoi(p+1);
1773                         }
1774                 }
1775                 if (!*port_ptr)
1776                         *port_ptr = RSYNC_PORT;
1777                 *host_ptr = new_array(char, hostlen + 1);
1778                 strlcpy(*host_ptr, s, hostlen + 1);
1779                 return path;
1780         }
1781
1782         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
1783                 s++;
1784                 *p = '\0';
1785                 not_host = strchr(s, '/') || !strchr(s, ':');
1786                 *p = ']';
1787                 if (not_host)
1788                         return NULL;
1789                 p++;
1790         } else {
1791                 if (!(p = strchr(s, ':')))
1792                         return NULL;
1793                 *p = '\0';
1794                 not_host = strchr(s, '/') != NULL;
1795                 *p = ':';
1796                 if (not_host)
1797                         return NULL;
1798         }
1799
1800         *host_ptr = new_array(char, p - s + 1);
1801         strlcpy(*host_ptr, s, p - s + 1);
1802
1803         if (p[1] == ':') {
1804                 if (port_ptr && !*port_ptr)
1805                         *port_ptr = RSYNC_PORT;
1806                 return p + 2;
1807         }
1808         if (port_ptr)
1809                 *port_ptr = 0;
1810
1811         return p + 1;
1812 }