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