options.c

   1 /*
   2  * Command-line (and received via daemon-socket) option parsing.
   3  *
   4  * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
   5  * Copyright (C) 2000, 2001, 2002 Martin Pool <mbp@samba.org>
   6  * Copyright (C) 2002-2007 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include <popt.h>
  24 #include "zlib/zlib.h"
  25
  26 extern int module_id;
  27 extern int sanitize_paths;
  28 extern int daemon_over_rsh;
  29 extern struct filter_list_struct filter_list;
  30 extern struct filter_list_struct server_filter_list;
  31
  32 int make_backups = 0;
  33
  34 /**
  35  * If 1, send the whole file as literal data rather than trying to
  36  * create an incremental diff.
  37  *
  38  * If -1, then look at whether we're local or remote and go by that.
  39  *
  40  * @sa disable_deltas_p()
  41  **/
  42 int whole_file = -1;
  43
  44 int append_mode = 0;
  45 int keep_dirlinks = 0;
  46 int copy_dirlinks = 0;
  47 int copy_links = 0;
  48 int preserve_links = 0;
  49 int preserve_hard_links = 0;
  50 int preserve_acls = 0;
  51 int preserve_xattrs = 0;
  52 int preserve_perms = 0;
  53 int preserve_executability = 0;
  54 int preserve_devices = 0;
  55 int preserve_specials = 0;
  56 int preserve_uid = 0;
  57 int preserve_gid = 0;
  58 int preserve_times = 0;
  59 int update_only = 0;
  60 int cvs_exclude = 0;
  61 int dry_run = 0;
  62 int do_xfers = 1;
  63 int ignore_times = 0;
  64 int delete_mode = 0;
  65 int delete_during = 0;
  66 int delete_before = 0;
  67 int delete_after = 0;
  68 int delete_excluded = 0;
  69 int remove_source_files = 0;
  70 int one_file_system = 0;
  71 int protocol_version = PROTOCOL_VERSION;
  72 int sparse_files = 0;
  73 int do_compression = 0;
  74 int def_compress_level = Z_DEFAULT_COMPRESSION;
  75 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  76 int am_server = 0;
  77 int am_sender = 0;
  78 int am_generator = 0;
  79 int am_starting_up = 1;
  80 int relative_paths = -1;
  81 int implied_dirs = 1;
  82 int numeric_ids = 0;
  83 int allow_8bit_chars = 0;
  84 int force_delete = 0;
  85 int io_timeout = 0;
  86 int allowed_lull = 0;
  87 int prune_empty_dirs = 0;
  88 int use_qsort = 0;
  89 char *files_from = NULL;
  90 int filesfrom_fd = -1;
  91 char *filesfrom_host = NULL;
  92 int eol_nulls = 0;
  93 int protect_args = 0;
  94 int human_readable = 0;
  95 int recurse = 0;
  96 int allow_inc_recurse = 1;
  97 int xfer_dirs = -1;
  98 int am_daemon = 0;
  99 int do_stats = 0;
 100 int do_progress = 0;
 101 int keep_partial = 0;
 102 int safe_symlinks = 0;
 103 int copy_unsafe_links = 0;
 104 int size_only = 0;
 105 int daemon_bwlimit = 0;
 106 int bwlimit = 0;
 107 int fuzzy_basis = 0;
 108 size_t bwlimit_writemax = 0;
 109 int ignore_existing = 0;
 110 int ignore_non_existing = 0;
 111 int need_messages_from_generator = 0;
 112 int max_delete = INT_MIN;
 113 OFF_T max_size = 0;
 114 OFF_T min_size = 0;
 115 int ignore_errors = 0;
 116 int modify_window = 0;
 117 int blocking_io = -1;
 118 int checksum_seed = 0;
 119 int inplace = 0;
 120 int delay_updates = 0;
 121 long block_size = 0; /* "long" because popt can't set an int32. */
 122 char *skip_compress = NULL;
 123
 124 /** Network address family. **/
 125 int default_af_hint
 126 #ifdef INET6
 127         = 0;            /* Any protocol */
 128 #else
 129         = AF_INET;      /* Must use IPv4 */
 130 # ifdef AF_INET6
 131 #  undef AF_INET6
 132 # endif
 133 # define AF_INET6 AF_INET /* make -6 option a no-op */
 134 #endif
 135
 136 /** Do not go into the background when run as --daemon.  Good
 137  * for debugging and required for running as a service on W32,
 138  * or under Unix process-monitors. **/
 139 int no_detach
 140 #if defined _WIN32 || defined __WIN32__
 141         = 1;
 142 #else
 143         = 0;
 144 #endif
 145
 146 int write_batch = 0;
 147 int read_batch = 0;
 148 int backup_dir_len = 0;
 149 int backup_suffix_len;
 150 unsigned int backup_dir_remainder;
 151
 152 char *backup_suffix = NULL;
 153 char *tmpdir = NULL;
 154 char *partial_dir = NULL;
 155 char *basis_dir[MAX_BASIS_DIRS+1];
 156 char *config_file = NULL;
 157 char *shell_cmd = NULL;
 158 char *logfile_name = NULL;
 159 char *logfile_format = NULL;
 160 char *stdout_format = NULL;
 161 char *password_file = NULL;
 162 char *rsync_path = RSYNC_PATH;
 163 char *backup_dir = NULL;
 164 char backup_dir_buf[MAXPATHLEN];
 165 char *sockopts = NULL;
 166 int rsync_port = 0;
 167 int compare_dest = 0;
 168 int copy_dest = 0;
 169 int link_dest = 0;
 170 int basis_dir_cnt = 0;
 171 char *dest_option = NULL;
 172
 173 int verbose = 0;
 174 int quiet = 0;
 175 int output_motd = 1;
 176 int log_before_transfer = 0;
 177 int stdout_format_has_i = 0;
 178 int stdout_format_has_o_or_i = 0;
 179 int logfile_format_has_i = 0;
 180 int logfile_format_has_o_or_i = 0;
 181 int always_checksum = 0;
 182 int list_only = 0;
 183
 184 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 185 char *batch_name = NULL;
 186
 187 #ifdef ICONV_OPTION
 188 int need_unsorted_flist = 0;
 189 char *iconv_opt = ICONV_OPTION;
 190 #endif
 191
 192 struct chmod_mode_struct *chmod_modes = NULL;
 193
 194 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 195 static int omit_dir_times = 0;
 196 static int F_option_cnt = 0;
 197 static int modify_window_set;
 198 static int itemize_changes = 0;
 199 static int refused_delete, refused_archive_part, refused_compress;
 200 static int refused_partial, refused_progress, refused_delete_before;
 201 static int refused_delete_during;
 202 static int refused_inplace;
 203 static char *max_size_arg, *min_size_arg;
 204 static char tmp_partialdir[] = ".~tmp~";
 205
 206 /** Local address to bind.  As a character string because it's
 207  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 208  * address, or a hostname. **/
 209 char *bind_address;
 210
 211
 212 static void print_rsync_version(enum logcode f)
 213 {
 214         char *subprotocol = "";
 215         char const *got_socketpair = "no ";
 216         char const *have_inplace = "no ";
 217         char const *hardlinks = "no ";
 218         char const *acls = "no ";
 219         char const *xattrs = "no ";
 220         char const *links = "no ";
 221         char const *iconv = "no ";
 222         char const *ipv6 = "no ";
 223         STRUCT_STAT *dumstat;
 224
 225 #if SUBPROTOCOL_VERSION != 0
 226         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
 227 #endif
 228 #ifdef HAVE_SOCKETPAIR
 229         got_socketpair = "";
 230 #endif
 231 #ifdef HAVE_FTRUNCATE
 232         have_inplace = "";
 233 #endif
 234 #ifdef SUPPORT_HARD_LINKS
 235         hardlinks = "";
 236 #endif
 237 #ifdef SUPPORT_ACLS
 238         acls = "";
 239 #endif
 240 #ifdef SUPPORT_XATTRS
 241         xattrs = "";
 242 #endif
 243 #ifdef SUPPORT_LINKS
 244         links = "";
 245 #endif
 246 #ifdef INET6
 247         ipv6 = "";
 248 #endif
 249 #ifdef ICONV_OPTION
 250         iconv = "";
 251 #endif
 252
 253         rprintf(f, "%s  version %s  protocol version %d%s\n",
 254                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 255         rprintf(f, "Copyright (C) 1996-2007 by Andrew Tridgell, Wayne Davison, and others.\n");
 256         rprintf(f, "Web site: http://rsync.samba.org/\n");
 257         rprintf(f, "Capabilities:\n");
 258         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 259                 (int)(sizeof (OFF_T) * 8),
 260                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 261                 (int)(sizeof (time_t) * 8),
 262                 (int)(sizeof (int64) * 8));
 263         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 264                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 265         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv\n",
 266                 have_inplace, acls, xattrs, iconv);
 267
 268 #ifdef MAINTAINER_MODE
 269         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 270 #endif
 271
 272 #if SIZEOF_INT64 < 8
 273         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 274 #endif
 275         if (sizeof (int64) != SIZEOF_INT64) {
 276                 rprintf(f,
 277                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 278                         (int) SIZEOF_INT64, (int) sizeof (int64));
 279         }
 280
 281         rprintf(f,"\n");
 282         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 283         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 284         rprintf(f,"General Public Licence for details.\n");
 285 }
 286
 287
 288 void usage(enum logcode F)
 289 {
 290   print_rsync_version(F);
 291
 292   rprintf(F,"\n");
 293   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 294   rprintf(F,"via a fast differencing algorithm.\n");
 295
 296   rprintf(F,"\n");
 297   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 298   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 299   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 300   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 301   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 302   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 303   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 304   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 305   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 306   rprintf(F,"\n");
 307   rprintf(F,"Options\n");
 308   rprintf(F," -v, --verbose               increase verbosity\n");
 309   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 310   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 311   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 312   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 313   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 314   rprintf(F," -r, --recursive             recurse into directories\n");
 315   rprintf(F," -R, --relative              use relative path names\n");
 316   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 317   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 318   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 319   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 320   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 321   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 322   rprintf(F,"     --append                append data onto shorter files\n");
 323   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 324   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 325   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 326   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 327   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 328   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 329   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 330   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 331   rprintf(F," -H, --hard-links            preserve hard links\n");
 332   rprintf(F," -p, --perms                 preserve permissions\n");
 333   rprintf(F," -E, --executability         preserve the file's executability\n");
 334   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 335 #ifdef SUPPORT_ACLS
 336   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 337 #endif
 338 #ifdef SUPPORT_XATTRS
 339   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 340 #endif
 341   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 342   rprintf(F," -g, --group                 preserve group\n");
 343   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 344   rprintf(F,"     --specials              preserve special files\n");
 345   rprintf(F," -D                          same as --devices --specials\n");
 346   rprintf(F," -t, --times                 preserve modification times\n");
 347   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 348   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 349 #ifdef SUPPORT_XATTRS
 350   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 351 #endif
 352   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 353   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 354   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
 355   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 356   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 357   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 358   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 359   rprintf(F,"     --existing              skip creating new files on receiver\n");
 360   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 361   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 362   rprintf(F,"     --del                   an alias for --delete-during\n");
 363   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 364   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 365   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
 366   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 367   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 368   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 369   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 370   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 371   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 372   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 373   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 374   rprintf(F,"     --partial               keep partially transferred files\n");
 375   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 376   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 377   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 378   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 379   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
 380   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 381   rprintf(F,"     --size-only             skip files that match in size\n");
 382   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 383   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 384   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 385   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 386   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 387   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 388   rprintf(F," -z, --compress              compress file data during the transfer\n");
 389   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 390   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 391   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 392   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 393   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 394   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 395   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 396   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 397   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 398   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 399   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 400   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 401   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 402   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 403   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 404   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 405   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 406   rprintf(F,"     --stats                 give some file-transfer stats\n");
 407   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 408   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 409   rprintf(F,"     --progress              show progress during transfer\n");
 410   rprintf(F," -P                          same as --partial --progress\n");
 411   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 412   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 413   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 414   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 415   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 416   rprintf(F,"     --list-only             list the files instead of copying them\n");
 417   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 418   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 419   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 420   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 421   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 422 #ifdef ICONV_OPTION
 423   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filesnames\n");
 424 #endif
 425   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 426   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 427   rprintf(F,"     --version               print version number\n");
 428   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 429
 430   rprintf(F,"\n");
 431   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 432   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 433   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 434 }
 435
 436 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 437       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 438       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 439       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 440       OPT_NO_D, OPT_APPEND,
 441       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 442
 443 static struct poptOption long_options[] = {
 444   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 445   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 446   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 447   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 448   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 449   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 450   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 451   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 452   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 453   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 454   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 455   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 456   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 457   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 458   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 459   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 460   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 461   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 462   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 463   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 464   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 465   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 466   {"no-ir",            0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 }, /* XXX remove soon */
 467   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 468   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 469   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 470   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 471   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 472   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 473   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 474   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 475   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 476   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 477   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 478   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 479   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 480   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
 481   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 482   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 483   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 484   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 485   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 486   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 487   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 488   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 489   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 490   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 491   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 492   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 493   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 494   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 495   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 496   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 497   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 498   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 499   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 500   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 501   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 502   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 503   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 504   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 505   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 506   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 507   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 508   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 509   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 510   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 511   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 512   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 513   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 514   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 515   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 516   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 517   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 518   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 519   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 520   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 521   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 522   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 523   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 524   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 525   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 526   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 527   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 528   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 529   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 530   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 531   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 532   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 533   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 534   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 535   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 536   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 537   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 538   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 539   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 540   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 541   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 542   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 543   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 544   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 545   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 546   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 547   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 548   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 549   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 550   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 551   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 552   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 553   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 554   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 555   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 556   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 557   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 558   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 559   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 560   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 561   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 562   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 563   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 564   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
 565   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 566   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 567   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 568   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 569   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 570   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 571   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 572   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 573   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 574   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 575   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 576   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 577   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 578   {"prune-empty-dirs",'m', POPT_ARG_NONE,   &prune_empty_dirs, 0, 0, 0 },
 579   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 580   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 581   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 582   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 583   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 584   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 585   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 586   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 587   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 588   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 589   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 590   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 591   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 592   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 593   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 594   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 595   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 596   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 597   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 598   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 599   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 600   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 601   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 602   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
 603   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
 604   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 605   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
 606   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 607   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 608   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 609 #ifdef ICONV_OPTION
 610   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
 611 #endif
 612   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 613   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 614   {"8-bit-output",    '8', POPT_ARG_NONE,   &allow_8bit_chars, 0, 0, 0 },
 615   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
 616   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 617   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 618   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 619   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 620   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 621   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 622   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 623   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 624   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 625   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 626   /* All the following options switch us into daemon-mode option-parsing. */
 627   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 628   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 629   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 630   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 631   {0,0,0,0, 0, 0, 0}
 632 };
 633
 634 static void daemon_usage(enum logcode F)
 635 {
 636   print_rsync_version(F);
 637
 638   rprintf(F,"\n");
 639   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
 640   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 641   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 642   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 643   rprintf(F,"     --no-detach             do not detach from the parent\n");
 644   rprintf(F,"     --port=PORT             listen on alternate port number\n");
 645   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
 646   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
 647   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 648   rprintf(F," -v, --verbose               increase verbosity\n");
 649   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 650   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 651   rprintf(F,"     --help                  show this help screen\n");
 652
 653   rprintf(F,"\n");
 654   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 655   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 656 }
 657
 658 static struct poptOption long_daemon_options[] = {
 659   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 660   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 661   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
 662   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 663   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 664   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 665   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 666   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
 667   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
 668   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 669   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 670   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 671   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 672   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 673   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 674   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 675   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 676   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 677   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 678   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 679   {0,0,0,0, 0, 0, 0}
 680 };
 681
 682
 683 static char err_buf[200];
 684
 685
 686 /**
 687  * Store the option error message, if any, so that we can log the
 688  * connection attempt (which requires parsing the options), and then
 689  * show the error later on.
 690  **/
 691 void option_error(void)
 692 {
 693         if (!err_buf[0]) {
 694                 strlcpy(err_buf, "Error parsing options: option may "
 695                         "be supported on client but not on server?\n",
 696                         sizeof err_buf);
 697         }
 698
 699         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 700         msleep(20);
 701 }
 702
 703
 704 /**
 705  * Tweak the option table to disable all options that the rsyncd.conf
 706  * file has told us to refuse.
 707  **/
 708 static void set_refuse_options(char *bp)
 709 {
 710         struct poptOption *op;
 711         char *cp, shortname[2];
 712         int is_wild, found_match;
 713
 714         shortname[1] = '\0';
 715
 716         while (1) {
 717                 while (*bp == ' ') bp++;
 718                 if (!*bp)
 719                         break;
 720                 if ((cp = strchr(bp, ' ')) != NULL)
 721                         *cp= '\0';
 722                 is_wild = strpbrk(bp, "*?[") != NULL;
 723                 found_match = 0;
 724                 for (op = long_options; ; op++) {
 725                         *shortname = op->shortName;
 726                         if (!op->longName && !*shortname)
 727                                 break;
 728                         if ((op->longName && wildmatch(bp, op->longName))
 729                             || (*shortname && wildmatch(bp, shortname))) {
 730                                 if (op->argInfo == POPT_ARG_VAL)
 731                                         op->argInfo = POPT_ARG_NONE;
 732                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 733                                 found_match = 1;
 734                                 /* These flags are set to let us easily check
 735                                  * an implied option later in the code. */
 736                                 switch (*shortname) {
 737                                 case 'r': case 'd': case 'l': case 'p':
 738                                 case 't': case 'g': case 'o': case 'D':
 739                                         refused_archive_part = op->val;
 740                                         break;
 741                                 case 'z':
 742                                         refused_compress = op->val;
 743                                         break;
 744                                 case '\0':
 745                                         if (wildmatch("delete", op->longName))
 746                                                 refused_delete = op->val;
 747                                         else if (wildmatch("delete-before", op->longName))
 748                                                 refused_delete_before = op->val;
 749                                         else if (wildmatch("delete-during", op->longName))
 750                                                 refused_delete_during = op->val;
 751                                         else if (wildmatch("partial", op->longName))
 752                                                 refused_partial = op->val;
 753                                         else if (wildmatch("progress", op->longName))
 754                                                 refused_progress = op->val;
 755                                         else if (wildmatch("inplace", op->longName))
 756                                                 refused_inplace = op->val;
 757                                         break;
 758                                 }
 759                                 if (!is_wild)
 760                                         break;
 761                         }
 762                 }
 763                 if (!found_match) {
 764                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 765                                 bp);
 766                 }
 767                 if (!cp)
 768                         break;
 769                 *cp = ' ';
 770                 bp = cp + 1;
 771         }
 772 }
 773
 774
 775 static int count_args(const char **argv)
 776 {
 777         int i = 0;
 778
 779         if (argv) {
 780                 while (argv[i] != NULL)
 781                         i++;
 782         }
 783
 784         return i;
 785 }
 786
 787
 788 static OFF_T parse_size_arg(char **size_arg, char def_suf)
 789 {
 790         int reps, mult, make_compatible = 0;
 791         const char *arg;
 792         OFF_T size = 1;
 793
 794         for (arg = *size_arg; isDigit(arg); arg++) {}
 795         if (*arg == '.')
 796                 for (arg++; isDigit(arg); arg++) {}
 797         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
 798         case 'b': case 'B':
 799                 reps = 0;
 800                 break;
 801         case 'k': case 'K':
 802                 reps = 1;
 803                 break;
 804         case 'm': case 'M':
 805                 reps = 2;
 806                 break;
 807         case 'g': case 'G':
 808                 reps = 3;
 809                 break;
 810         default:
 811                 return -1;
 812         }
 813         if (*arg == 'b' || *arg == 'B')
 814                 mult = 1000, make_compatible = 1, arg++;
 815         else if (!*arg || *arg == '+' || *arg == '-')
 816                 mult = 1024;
 817         else if (strncasecmp(arg, "ib", 2) == 0)
 818                 mult = 1024, arg += 2;
 819         else
 820                 return -1;
 821         while (reps--)
 822                 size *= mult;
 823         size *= atof(*size_arg);
 824         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
 825                 size += atoi(arg), make_compatible = 1, arg += 2;
 826         if (*arg)
 827                 return -1;
 828         if (size > 0 && make_compatible) {
 829                 /* We convert this manually because we may need %lld precision,
 830                  * and that's not a portable sprintf() escape. */
 831                 char buf[128], *s = buf + sizeof buf - 1;
 832                 OFF_T num = size;
 833                 *s = '\0';
 834                 while (num) {
 835                         *--s = (char)(num % 10) + '0';
 836                         num /= 10;
 837                 }
 838                 if (!(*size_arg = strdup(s)))
 839                         out_of_memory("parse_size_arg");
 840         }
 841         return size;
 842 }
 843
 844
 845 static void create_refuse_error(int which)
 846 {
 847         /* The "which" value is the index + OPT_REFUSED_BASE. */
 848         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
 849         int n = snprintf(err_buf, sizeof err_buf,
 850                          "The server is configured to refuse --%s\n",
 851                          op->longName) - 1;
 852         if (op->shortName) {
 853                 snprintf(err_buf + n, sizeof err_buf - n,
 854                          " (-%c)\n", op->shortName);
 855         }
 856 }
 857
 858
 859 /**
 860  * Process command line arguments.  Called on both local and remote.
 861  *
 862  * @retval 1 if all options are OK; with globals set to appropriate
 863  * values
 864  *
 865  * @retval 0 on error, with err_buf containing an explanation
 866  **/
 867 int parse_arguments(int *argc_p, const char ***argv_p, int frommain)
 868 {
 869         static poptContext pc;
 870         char *ref = lp_refuse_options(module_id);
 871         const char *arg, **argv = *argv_p;
 872         int argc = *argc_p;
 873         int opt;
 874
 875         if (ref && *ref)
 876                 set_refuse_options(ref);
 877         if (am_daemon)
 878                 set_refuse_options("log-file*");
 879
 880 #ifdef ICONV_OPTION
 881         if (!am_daemon && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
 882                 iconv_opt = strdup(arg);
 883 #endif
 884
 885         /* TODO: Call poptReadDefaultConfig; handle errors. */
 886
 887         /* The context leaks in case of an error, but if there's a
 888          * problem we always exit anyhow. */
 889         if (pc)
 890                 poptFreeContext(pc);
 891         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
 892         if (!am_server)
 893                 poptReadDefaultConfig(pc, 0);
 894
 895         while ((opt = poptGetNextOpt(pc)) != -1) {
 896                 /* most options are handled automatically by popt;
 897                  * only special cases are returned and listed here. */
 898
 899                 switch (opt) {
 900                 case OPT_VERSION:
 901                         print_rsync_version(FINFO);
 902                         exit_cleanup(0);
 903
 904                 case OPT_SERVER:
 905                         if (!am_server) {
 906                                 /* Disable popt aliases on the server side and
 907                                  * then start parsing the options again. */
 908                                 poptFreeContext(pc);
 909                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
 910                                                     long_options, 0);
 911                                 am_server = 1;
 912                         }
 913 #ifdef ICONV_OPTION
 914                         iconv_opt = NULL;
 915 #endif
 916                         break;
 917
 918                 case OPT_SENDER:
 919                         if (!am_server) {
 920                                 usage(FERROR);
 921                                 exit_cleanup(RERR_SYNTAX);
 922                         }
 923                         am_sender = 1;
 924                         break;
 925
 926                 case OPT_DAEMON:
 927                         if (am_daemon) {
 928                                 strlcpy(err_buf,
 929                                         "Attempt to hack rsync thwarted!\n",
 930                                         sizeof err_buf);
 931                                 return 0;
 932                         }
 933 #ifdef ICONV_OPTION
 934                         iconv_opt = NULL;
 935 #endif
 936                         poptFreeContext(pc);
 937                         pc = poptGetContext(RSYNC_NAME, argc, argv,
 938                                             long_daemon_options, 0);
 939                         while ((opt = poptGetNextOpt(pc)) != -1) {
 940                                 switch (opt) {
 941                                 case 'h':
 942                                         daemon_usage(FINFO);
 943                                         exit_cleanup(0);
 944
 945                                 case 'v':
 946                                         verbose++;
 947                                         break;
 948
 949                                 default:
 950                                         rprintf(FERROR,
 951                                             "rsync: %s: %s (in daemon mode)\n",
 952                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 953                                             poptStrerror(opt));
 954                                         goto daemon_error;
 955                                 }
 956                         }
 957
 958                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 959                                 snprintf(err_buf, sizeof err_buf,
 960                                          "the --temp-dir path is WAY too long.\n");
 961                                 return 0;
 962                         }
 963
 964                         if (!daemon_opt) {
 965                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
 966                             daemon_error:
 967                                 rprintf(FERROR,
 968                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
 969                                 exit_cleanup(RERR_SYNTAX);
 970                         }
 971
 972                         *argv_p = argv = poptGetArgs(pc);
 973                         *argc_p = argc = count_args(argv);
 974                         am_starting_up = 0;
 975                         daemon_opt = 0;
 976                         am_daemon = 1;
 977                         return 1;
 978
 979                 case OPT_MODIFY_WINDOW:
 980                         /* The value has already been set by popt, but
 981                          * we need to remember that we're using a
 982                          * non-default setting. */
 983                         modify_window_set = 1;
 984                         break;
 985
 986                 case OPT_FILTER:
 987                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
 988                         break;
 989
 990                 case OPT_EXCLUDE:
 991                         parse_rule(&filter_list, poptGetOptArg(pc),
 992                                    0, XFLG_OLD_PREFIXES);
 993                         break;
 994
 995                 case OPT_INCLUDE:
 996                         parse_rule(&filter_list, poptGetOptArg(pc),
 997                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
 998                         break;
 999
1000                 case OPT_EXCLUDE_FROM:
1001                 case OPT_INCLUDE_FROM:
1002                         arg = poptGetOptArg(pc);
1003                         if (sanitize_paths)
1004                                 arg = sanitize_path(NULL, arg, NULL, 0, NULL);
1005                         if (server_filter_list.head) {
1006                                 char *cp = strdup(arg);
1007                                 if (!cp)
1008                                         out_of_memory("parse_arguments");
1009                                 if (!*cp)
1010                                         goto options_rejected;
1011                                 clean_fname(cp, 1);
1012                                 if (check_filter(&server_filter_list, cp, 0) < 0)
1013                                         goto options_rejected;
1014                                 free(cp);
1015                         }
1016                         parse_filter_file(&filter_list, arg,
1017                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1018                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1019                         break;
1020
1021                 case 'a':
1022                         if (refused_archive_part) {
1023                                 create_refuse_error(refused_archive_part);
1024                                 return 0;
1025                         }
1026                         if (!recurse) /* preserve recurse == 2 */
1027                                 recurse = 1;
1028 #ifdef SUPPORT_LINKS
1029                         preserve_links = 1;
1030 #endif
1031                         preserve_perms = 1;
1032                         preserve_times = 2;
1033                         preserve_gid = 1;
1034                         preserve_uid = 1;
1035                         preserve_devices = 1;
1036                         preserve_specials = 1;
1037                         break;
1038
1039                 case 'D':
1040                         preserve_devices = preserve_specials = 1;
1041                         break;
1042
1043                 case OPT_NO_D:
1044                         preserve_devices = preserve_specials = 0;
1045                         break;
1046
1047                 case 'h':
1048                         human_readable++;
1049                         break;
1050
1051                 case 'H':
1052                         preserve_hard_links++;
1053                         break;
1054
1055                 case 'i':
1056                         itemize_changes++;
1057                         break;
1058
1059                 case 'v':
1060                         verbose++;
1061                         break;
1062
1063                 case 'q':
1064                         if (frommain)
1065                                 quiet++;
1066                         break;
1067
1068                 case 'x':
1069                         one_file_system++;
1070                         break;
1071
1072                 case 'F':
1073                         switch (++F_option_cnt) {
1074                         case 1:
1075                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1076                                 break;
1077                         case 2:
1078                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1079                                 break;
1080                         }
1081                         break;
1082
1083                 case 'P':
1084                         if (refused_partial || refused_progress) {
1085                                 create_refuse_error(refused_partial
1086                                     ? refused_partial : refused_progress);
1087                                 return 0;
1088                         }
1089                         do_progress = 1;
1090                         keep_partial = 1;
1091                         break;
1092
1093                 case 'z':
1094                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1095                          || def_compress_level > Z_BEST_COMPRESSION) {
1096                                 snprintf(err_buf, sizeof err_buf,
1097                                         "--compress-level value is invalid: %d\n",
1098                                         def_compress_level);
1099                                 return 0;
1100                         }
1101                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1102                         if (do_compression && refused_compress) {
1103                                 create_refuse_error(refused_compress);
1104                                 return 0;
1105                         }
1106                         break;
1107
1108                 case OPT_WRITE_BATCH:
1109                         /* batch_name is already set */
1110                         write_batch = 1;
1111                         break;
1112
1113                 case OPT_ONLY_WRITE_BATCH:
1114                         /* batch_name is already set */
1115                         write_batch = -1;
1116                         break;
1117
1118                 case OPT_READ_BATCH:
1119                         /* batch_name is already set */
1120                         read_batch = 1;
1121                         break;
1122
1123                 case OPT_MAX_SIZE:
1124                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1125                                 snprintf(err_buf, sizeof err_buf,
1126                                         "--max-size value is invalid: %s\n",
1127                                         max_size_arg);
1128                                 return 0;
1129                         }
1130                         break;
1131
1132                 case OPT_MIN_SIZE:
1133                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1134                                 snprintf(err_buf, sizeof err_buf,
1135                                         "--min-size value is invalid: %s\n",
1136                                         min_size_arg);
1137                                 return 0;
1138                         }
1139                         break;
1140
1141                 case OPT_APPEND:
1142                         if (am_server)
1143                                 append_mode++;
1144                         else
1145                                 append_mode = 1;
1146                         break;
1147
1148                 case OPT_LINK_DEST:
1149 #ifdef SUPPORT_HARD_LINKS
1150                         link_dest = 1;
1151                         dest_option = "--link-dest";
1152                         goto set_dest_dir;
1153 #else
1154                         snprintf(err_buf, sizeof err_buf,
1155                                  "hard links are not supported on this %s\n",
1156                                  am_server ? "server" : "client");
1157                         return 0;
1158 #endif
1159
1160                 case OPT_COPY_DEST:
1161                         copy_dest = 1;
1162                         dest_option = "--copy-dest";
1163                         goto set_dest_dir;
1164
1165                 case OPT_COMPARE_DEST:
1166                         compare_dest = 1;
1167                         dest_option = "--compare-dest";
1168                 set_dest_dir:
1169                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1170                                 snprintf(err_buf, sizeof err_buf,
1171                                         "ERROR: at most %d %s args may be specified\n",
1172                                         MAX_BASIS_DIRS, dest_option);
1173                                 return 0;
1174                         }
1175                         /* We defer sanitizing this arg until we know what
1176                          * our destination directory is going to be. */
1177                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1178                         break;
1179
1180                 case OPT_CHMOD:
1181                         arg = poptGetOptArg(pc);
1182                         if (!parse_chmod(arg, &chmod_modes)) {
1183                                 snprintf(err_buf, sizeof err_buf,
1184                                     "Invalid argument passed to --chmod (%s)\n",
1185                                     arg);
1186                                 return 0;
1187                         }
1188                         break;
1189
1190                 case OPT_HELP:
1191                         usage(FINFO);
1192                         exit_cleanup(0);
1193
1194                 case 'A':
1195 #ifdef SUPPORT_ACLS
1196                         preserve_acls = 1;
1197                         preserve_perms = 1;
1198                         break;
1199 #else
1200                         /* FIXME: this should probably be ignored with a
1201                          * warning and then countermeasures taken to
1202                          * restrict group and other access in the presence
1203                          * of any more restrictive ACLs, but this is safe
1204                          * for now */
1205                         snprintf(err_buf,sizeof(err_buf),
1206                                  "ACLs are not supported on this %s\n",
1207                                  am_server ? "server" : "client");
1208                         return 0;
1209 #endif
1210
1211                 case 'X':
1212 #ifdef SUPPORT_XATTRS
1213                         preserve_xattrs++;
1214                         break;
1215 #else
1216                         snprintf(err_buf,sizeof(err_buf),
1217                                  "extended attributes are not supported on this %s\n",
1218                                  am_server ? "server" : "client");
1219                         return 0;
1220 #endif
1221
1222                 default:
1223                         /* A large opt value means that set_refuse_options()
1224                          * turned this option off. */
1225                         if (opt >= OPT_REFUSED_BASE) {
1226                                 create_refuse_error(opt);
1227                                 return 0;
1228                         }
1229                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1230                                  am_server ? "on remote machine: " : "",
1231                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1232                                  poptStrerror(opt));
1233                         return 0;
1234                 }
1235         }
1236
1237         if (human_readable && argc == 2) {
1238                 /* Allow the old meaning of 'h' (--help) on its own. */
1239                 usage(FINFO);
1240                 exit_cleanup(0);
1241         }
1242
1243         if (protect_args) {
1244                 if (!frommain)
1245                         protect_args = 0;
1246                 else if (am_server)
1247                         return 1;
1248         }
1249
1250 #ifdef ICONV_OPTION
1251         if (iconv_opt) {
1252                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1253                         iconv_opt = NULL;
1254                 else
1255                         need_unsorted_flist = 1;
1256         }
1257 #endif
1258
1259 #ifndef SUPPORT_LINKS
1260         if (preserve_links && !am_sender) {
1261                 snprintf(err_buf, sizeof err_buf,
1262                          "symlinks are not supported on this %s\n",
1263                          am_server ? "server" : "client");
1264                 return 0;
1265         }
1266 #endif
1267
1268 #ifndef SUPPORT_HARD_LINKS
1269         if (preserve_hard_links) {
1270                 snprintf(err_buf, sizeof err_buf,
1271                          "hard links are not supported on this %s\n",
1272                          am_server ? "server" : "client");
1273                 return 0;
1274         }
1275 #endif
1276
1277 #ifndef SUPPORT_XATTRS
1278         if (am_root < 0) {
1279                 snprintf(err_buf, sizeof err_buf,
1280                          "--fake-super requires an rsync with extended attributes enabled\n");
1281                 return 0;
1282         }
1283 #endif
1284
1285         if (write_batch && read_batch) {
1286                 snprintf(err_buf, sizeof err_buf,
1287                         "--write-batch and --read-batch can not be used together\n");
1288                 return 0;
1289         }
1290         if (write_batch > 0 || read_batch) {
1291                 if (am_server) {
1292                         rprintf(FINFO,
1293                                 "ignoring --%s-batch option sent to server\n",
1294                                 write_batch ? "write" : "read");
1295                         /* We don't actually exit_cleanup(), so that we can
1296                          * still service older version clients that still send
1297                          * batch args to server. */
1298                         read_batch = write_batch = 0;
1299                         batch_name = NULL;
1300                 } else if (dry_run)
1301                         write_batch = 0;
1302         }
1303         if (read_batch && files_from) {
1304                 snprintf(err_buf, sizeof err_buf,
1305                         "--read-batch cannot be used with --files-from\n");
1306                 return 0;
1307         }
1308         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1309                 snprintf(err_buf, sizeof err_buf,
1310                         "the batch-file name must be %d characters or less.\n",
1311                         MAX_BATCH_NAME_LEN);
1312                 return 0;
1313         }
1314
1315         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1316                 snprintf(err_buf, sizeof err_buf,
1317                          "the --temp-dir path is WAY too long.\n");
1318                 return 0;
1319         }
1320
1321         if (max_delete < 0 && max_delete != INT_MIN) {
1322                 /* Negative numbers are treated as "no deletions". */
1323                 max_delete = 0;
1324         }
1325
1326         if (compare_dest + copy_dest + link_dest > 1) {
1327                 snprintf(err_buf, sizeof err_buf,
1328                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1329                 return 0;
1330         }
1331
1332         if (files_from) {
1333                 if (recurse == 1) /* preserve recurse == 2 */
1334                         recurse = 0;
1335                 if (xfer_dirs < 0)
1336                         xfer_dirs = 1;
1337         }
1338
1339         if (xfer_dirs < 1)
1340                 xfer_dirs = recurse || list_only;
1341
1342         if (relative_paths < 0)
1343                 relative_paths = files_from? 1 : 0;
1344         if (!relative_paths)
1345                 implied_dirs = 0;
1346
1347         if (delete_before + !!delete_during + delete_after > 1) {
1348                 snprintf(err_buf, sizeof err_buf,
1349                         "You may not combine multiple --delete-WHEN options.\n");
1350                 return 0;
1351         }
1352         if (delete_before || delete_during || delete_after)
1353                 delete_mode = 1;
1354         else if (delete_mode || delete_excluded) {
1355                 /* Only choose now between before & during if one is refused. */
1356                 if (refused_delete_before) {
1357                         if (!refused_delete_during)
1358                                 delete_during = 1;
1359                         else {
1360                                 create_refuse_error(refused_delete_before);
1361                                 return 0;
1362                         }
1363                 } else if (refused_delete_during)
1364                         delete_before = 1;
1365                 delete_mode = 1;
1366         }
1367         if (!xfer_dirs && delete_mode) {
1368                 snprintf(err_buf, sizeof err_buf,
1369                         "--delete does not work without -r or -d.\n");
1370                 return 0;
1371         }
1372
1373         if (delete_mode && refused_delete) {
1374                 create_refuse_error(refused_delete);
1375                 return 0;
1376         }
1377
1378         if (remove_source_files) {
1379                 /* We only want to infer this refusal of --remove-source-files
1380                  * via the refusal of "delete", not any of the "delete-FOO"
1381                  * options. */
1382                 if (refused_delete && am_sender) {
1383                         create_refuse_error(refused_delete);
1384                         return 0;
1385                 }
1386                 need_messages_from_generator = 1;
1387         }
1388
1389         *argv_p = argv = poptGetArgs(pc);
1390         *argc_p = argc = count_args(argv);
1391
1392         if (sanitize_paths) {
1393                 int i;
1394                 for (i = argc; i-- > 0; )
1395                         argv[i] = sanitize_path(NULL, argv[i], "", 0, NULL);
1396                 if (tmpdir)
1397                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0, NULL);
1398                 if (backup_dir)
1399                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0, NULL);
1400         }
1401         if (server_filter_list.head && !am_sender) {
1402                 struct filter_list_struct *elp = &server_filter_list;
1403                 if (tmpdir) {
1404                         if (!*tmpdir)
1405                                 goto options_rejected;
1406                         clean_fname(tmpdir, 1);
1407                         if (check_filter(elp, tmpdir, 1) < 0)
1408                                 goto options_rejected;
1409                 }
1410                 if (backup_dir) {
1411                         if (!*backup_dir)
1412                                 goto options_rejected;
1413                         clean_fname(backup_dir, 1);
1414                         if (check_filter(elp, backup_dir, 1) < 0)
1415                                 goto options_rejected;
1416                 }
1417         }
1418
1419         if (!backup_suffix)
1420                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1421         backup_suffix_len = strlen(backup_suffix);
1422         if (strchr(backup_suffix, '/') != NULL) {
1423                 snprintf(err_buf, sizeof err_buf,
1424                         "--suffix cannot contain slashes: %s\n",
1425                         backup_suffix);
1426                 return 0;
1427         }
1428         if (backup_dir) {
1429                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1430                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1431                 if (backup_dir_remainder < 32) {
1432                         snprintf(err_buf, sizeof err_buf,
1433                                 "the --backup-dir path is WAY too long.\n");
1434                         return 0;
1435                 }
1436                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1437                         backup_dir_buf[backup_dir_len++] = '/';
1438                         backup_dir_buf[backup_dir_len] = '\0';
1439                 }
1440                 if (verbose > 1 && !am_sender)
1441                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1442         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1443                 snprintf(err_buf, sizeof err_buf,
1444                         "--suffix cannot be a null string without --backup-dir\n");
1445                 return 0;
1446         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1447                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1448                         "P *%s", backup_suffix);
1449                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1450         }
1451
1452         if (make_backups && !backup_dir) {
1453                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1454                 if (preserve_times > 1)
1455                         preserve_times = 1;
1456         } else if (omit_dir_times) {
1457                 if (preserve_times > 1)
1458                         preserve_times = 1;
1459         }
1460
1461         if (stdout_format) {
1462                 if (am_server && log_format_has(stdout_format, 'I'))
1463                         stdout_format_has_i = 2;
1464                 else if (log_format_has(stdout_format, 'i'))
1465                         stdout_format_has_i = itemize_changes | 1;
1466                 if (!log_format_has(stdout_format, 'b')
1467                  && !log_format_has(stdout_format, 'c'))
1468                         log_before_transfer = !am_server;
1469         } else if (itemize_changes) {
1470                 stdout_format = "%i %n%L";
1471                 stdout_format_has_i = itemize_changes;
1472                 log_before_transfer = !am_server;
1473         }
1474
1475         if (do_progress && !verbose && !log_before_transfer && !am_server)
1476                 verbose = 1;
1477
1478         if (dry_run)
1479                 do_xfers = 0;
1480
1481         set_io_timeout(io_timeout);
1482
1483         if (verbose && !stdout_format) {
1484                 stdout_format = "%n%L";
1485                 log_before_transfer = !am_server;
1486         }
1487         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1488                 stdout_format_has_o_or_i = 1;
1489
1490         if (logfile_name && !am_daemon) {
1491                 if (!logfile_format) {
1492                         logfile_format = "%i %n%L";
1493                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1494                 } else {
1495                         if (log_format_has(logfile_format, 'i'))
1496                                 logfile_format_has_i = 1;
1497                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1498                                 logfile_format_has_o_or_i = 1;
1499                 }
1500                 log_init(0);
1501         } else if (!am_daemon)
1502                 logfile_format = NULL;
1503
1504         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1505                 bwlimit = daemon_bwlimit;
1506         if (bwlimit) {
1507                 bwlimit_writemax = (size_t)bwlimit * 128;
1508                 if (bwlimit_writemax < 512)
1509                         bwlimit_writemax = 512;
1510         }
1511
1512         if (sparse_files && inplace) {
1513                 /* Note: we don't check for this below, because --append is
1514                  * OK with --sparse (as long as redos are handled right). */
1515                 snprintf(err_buf, sizeof err_buf,
1516                          "--sparse cannot be used with --inplace\n");
1517                 return 0;
1518         }
1519
1520         if (append_mode) {
1521                 if (whole_file > 0) {
1522                         snprintf(err_buf, sizeof err_buf,
1523                                  "--append cannot be used with --whole-file\n");
1524                         return 0;
1525                 }
1526                 if (refused_inplace) {
1527                         create_refuse_error(refused_inplace);
1528                         return 0;
1529                 }
1530                 inplace = 1;
1531         }
1532
1533         if (delay_updates && !partial_dir)
1534                 partial_dir = tmp_partialdir;
1535
1536         if (inplace) {
1537 #ifdef HAVE_FTRUNCATE
1538                 if (partial_dir) {
1539                         snprintf(err_buf, sizeof err_buf,
1540                                  "--%s cannot be used with --%s\n",
1541                                  append_mode ? "append" : "inplace",
1542                                  delay_updates ? "delay-updates" : "partial-dir");
1543                         return 0;
1544                 }
1545                 /* --inplace implies --partial for refusal purposes, but we
1546                  * clear the keep_partial flag for internal logic purposes. */
1547                 if (refused_partial) {
1548                         create_refuse_error(refused_partial);
1549                         return 0;
1550                 }
1551                 keep_partial = 0;
1552 #else
1553                 snprintf(err_buf, sizeof err_buf,
1554                          "--%s is not supported on this %s\n",
1555                          append_mode ? "append" : "inplace",
1556                          am_server ? "server" : "client");
1557                 return 0;
1558 #endif
1559         } else {
1560                 if (keep_partial && !partial_dir && !am_server) {
1561                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1562                                 partial_dir = strdup(arg);
1563                 }
1564                 if (partial_dir) {
1565                         if (*partial_dir)
1566                                 clean_fname(partial_dir, 1);
1567                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1568                                 partial_dir = NULL;
1569                         if (!partial_dir && refused_partial) {
1570                                 create_refuse_error(refused_partial);
1571                                 return 0;
1572                         }
1573                         keep_partial = 1;
1574                 }
1575         }
1576
1577         if (files_from) {
1578                 char *h, *p;
1579                 int q;
1580                 if (argc > 2 || (!am_daemon && argc == 1)) {
1581                         usage(FERROR);
1582                         exit_cleanup(RERR_SYNTAX);
1583                 }
1584                 if (strcmp(files_from, "-") == 0) {
1585                         filesfrom_fd = 0;
1586                         if (am_server)
1587                                 filesfrom_host = ""; /* reading from socket */
1588                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1589                         if (am_server) {
1590                                 snprintf(err_buf, sizeof err_buf,
1591                                         "The --files-from sent to the server cannot specify a host.\n");
1592                                 return 0;
1593                         }
1594                         files_from = p;
1595                         filesfrom_host = h;
1596                         if (strcmp(files_from, "-") == 0) {
1597                                 snprintf(err_buf, sizeof err_buf,
1598                                         "Invalid --files-from remote filename\n");
1599                                 return 0;
1600                         }
1601                 } else {
1602                         if (sanitize_paths)
1603                                 files_from = sanitize_path(NULL, files_from, NULL, 0, NULL);
1604                         if (server_filter_list.head) {
1605                                 if (!*files_from)
1606                                         goto options_rejected;
1607                                 clean_fname(files_from, 1);
1608                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1609                                         goto options_rejected;
1610                         }
1611                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1612                         if (filesfrom_fd < 0) {
1613                                 snprintf(err_buf, sizeof err_buf,
1614                                         "failed to open files-from file %s: %s\n",
1615                                         files_from, strerror(errno));
1616                                 return 0;
1617                         }
1618                 }
1619         }
1620
1621         am_starting_up = 0;
1622
1623         return 1;
1624
1625   options_rejected:
1626         snprintf(err_buf, sizeof err_buf,
1627                 "Your options have been rejected by the server.\n");
1628         return 0;
1629 }
1630
1631
1632 /**
1633  * Construct a filtered list of options to pass through from the
1634  * client to the server.
1635  *
1636  * This involves setting options that will tell the server how to
1637  * behave, and also filtering out options that are processed only
1638  * locally.
1639  **/
1640 void server_options(char **args, int *argc_p)
1641 {
1642         static char argstr[64];
1643         int ac = *argc_p;
1644         char *arg;
1645
1646         int i, x;
1647
1648         if (blocking_io == -1)
1649                 blocking_io = 0;
1650
1651         /* This should always remain first on the server's command-line. */
1652         args[ac++] = "--server";
1653
1654         if (daemon_over_rsh > 0) {
1655                 args[ac++] = "--daemon";
1656                 *argc_p = ac;
1657                 /* if we're passing --daemon, we're done */
1658                 return;
1659         }
1660
1661         if (!am_sender)
1662                 args[ac++] = "--sender";
1663
1664         x = 1;
1665         argstr[0] = '-';
1666         for (i = 0; i < verbose; i++)
1667                 argstr[x++] = 'v';
1668
1669         /* the -q option is intentionally left out */
1670         if (make_backups)
1671                 argstr[x++] = 'b';
1672         if (update_only)
1673                 argstr[x++] = 'u';
1674         if (!do_xfers) /* Note: NOT "dry_run"! */
1675                 argstr[x++] = 'n';
1676         if (preserve_links)
1677                 argstr[x++] = 'l';
1678         if (xfer_dirs > (recurse || !delete_mode || !am_sender ? 1 : 0))
1679                 argstr[x++] = 'd';
1680         if (am_sender) {
1681                 if (keep_dirlinks)
1682                         argstr[x++] = 'K';
1683                 if (prune_empty_dirs)
1684                         argstr[x++] = 'm';
1685                 if (omit_dir_times)
1686                         argstr[x++] = 'O';
1687         } else {
1688                 if (copy_links)
1689                         argstr[x++] = 'L';
1690                 if (copy_dirlinks)
1691                         argstr[x++] = 'k';
1692         }
1693
1694         if (whole_file > 0)
1695                 argstr[x++] = 'W';
1696         /* We don't need to send --no-whole-file, because it's the
1697          * default for remote transfers, and in any case old versions
1698          * of rsync will not understand it. */
1699
1700         if (preserve_hard_links) {
1701                 argstr[x++] = 'H';
1702                 if (preserve_hard_links > 1)
1703                         argstr[x++] = 'H';
1704         }
1705         if (preserve_uid)
1706                 argstr[x++] = 'o';
1707         if (preserve_gid)
1708                 argstr[x++] = 'g';
1709         if (preserve_devices) /* ignore preserve_specials here */
1710                 argstr[x++] = 'D';
1711         if (preserve_times)
1712                 argstr[x++] = 't';
1713         if (preserve_perms)
1714                 argstr[x++] = 'p';
1715         else if (preserve_executability && am_sender)
1716                 argstr[x++] = 'E';
1717 #ifdef SUPPORT_ACLS
1718         if (preserve_acls)
1719                 argstr[x++] = 'A';
1720 #endif
1721 #ifdef SUPPORT_XATTRS
1722         if (preserve_xattrs) {
1723                 argstr[x++] = 'X';
1724                 if (preserve_xattrs > 1)
1725                         argstr[x++] = 'X';
1726         }
1727 #endif
1728         if (recurse)
1729                 argstr[x++] = 'r';
1730         if (always_checksum)
1731                 argstr[x++] = 'c';
1732         if (cvs_exclude)
1733                 argstr[x++] = 'C';
1734         if (ignore_times)
1735                 argstr[x++] = 'I';
1736         if (relative_paths)
1737                 argstr[x++] = 'R';
1738         if (one_file_system) {
1739                 argstr[x++] = 'x';
1740                 if (one_file_system > 1)
1741                         argstr[x++] = 'x';
1742         }
1743         if (sparse_files)
1744                 argstr[x++] = 'S';
1745         if (do_compression)
1746                 argstr[x++] = 'z';
1747
1748         /* This is a complete hack - blame Rusty.  FIXME!
1749          * This hack is only needed for older rsync versions that
1750          * don't understand the --list-only option. */
1751         if (list_only == 1 && !recurse)
1752                 argstr[x++] = 'r';
1753
1754 #if SUBPROTOCOL_VERSION != 0
1755         /* If we're speaking a pre-release version of a protocol, we tell
1756          * the server about this by (ab)using the -e option. */
1757         if (protocol_version == PROTOCOL_VERSION) {
1758                 x += snprintf(argstr+x, sizeof argstr - x,
1759                               "e%d.%d", PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
1760         }
1761 #endif
1762
1763         argstr[x] = '\0';
1764
1765         if (x != 1)
1766                 args[ac++] = argstr;
1767
1768         if (list_only > 1)
1769                 args[ac++] = "--list-only";
1770
1771         /* This makes sure that the remote rsync can handle deleting with -d
1772          * sans -r because the --no-r option was added at the same time. */
1773         if (xfer_dirs && !recurse && delete_mode && am_sender)
1774                 args[ac++] = "--no-r";
1775
1776         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1777                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1778                         goto oom;
1779                 args[ac++] = arg;
1780         }
1781
1782         if (preserve_devices) {
1783                 /* Note: sending "--devices" would not be backward-compatible. */
1784                 if (!preserve_specials)
1785                         args[ac++] = "--no-specials"; /* -D is already set. */
1786         } else if (preserve_specials)
1787                 args[ac++] = "--specials";
1788
1789         /* The server side doesn't use our log-format, but in certain
1790          * circumstances they need to know a little about the option. */
1791         if (stdout_format && am_sender) {
1792                 /* Use --log-format, not --out-format, for compatibility. */
1793                 if (stdout_format_has_i > 1)
1794                         args[ac++] = "--log-format=%i%I";
1795                 else if (stdout_format_has_i)
1796                         args[ac++] = "--log-format=%i";
1797                 else if (stdout_format_has_o_or_i)
1798                         args[ac++] = "--log-format=%o";
1799                 else if (!verbose)
1800                         args[ac++] = "--log-format=X";
1801         }
1802
1803 #ifdef ICONV_OPTION
1804         if (iconv_opt) {
1805                 char *set = strchr(iconv_opt, ',');
1806                 if (set)
1807                         set++;
1808                 else
1809                         set = iconv_opt;
1810                 if (asprintf(&arg, "--iconv=%s", set) < 0)
1811                         goto oom;
1812                 args[ac++] = arg;
1813         }
1814 #endif
1815
1816         if (block_size) {
1817                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1818                         goto oom;
1819                 args[ac++] = arg;
1820         }
1821
1822         if (io_timeout) {
1823                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1824                         goto oom;
1825                 args[ac++] = arg;
1826         }
1827
1828         if (bwlimit) {
1829                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1830                         goto oom;
1831                 args[ac++] = arg;
1832         }
1833
1834         if (backup_dir) {
1835                 args[ac++] = "--backup-dir";
1836                 args[ac++] = backup_dir;
1837         }
1838
1839         /* Only send --suffix if it specifies a non-default value. */
1840         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1841                 /* We use the following syntax to avoid weirdness with '~'. */
1842                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1843                         goto oom;
1844                 args[ac++] = arg;
1845         }
1846
1847         if (am_sender) {
1848                 if (max_delete > 0) {
1849                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1850                                 goto oom;
1851                         args[ac++] = arg;
1852                 } else if (max_delete == 0)
1853                         args[ac++] = "--max-delete=-1";
1854                 if (min_size) {
1855                         args[ac++] = "--min-size";
1856                         args[ac++] = min_size_arg;
1857                 }
1858                 if (max_size) {
1859                         args[ac++] = "--max-size";
1860                         args[ac++] = max_size_arg;
1861                 }
1862                 if (delete_before)
1863                         args[ac++] = "--delete-before";
1864                 else if (delete_during == 2)
1865                         args[ac++] = "--delete-delay";
1866                 else if (delete_during)
1867                         args[ac++] = "--delete-during";
1868                 else if (delete_after)
1869                         args[ac++] = "--delete-after";
1870                 else if (delete_mode && !delete_excluded)
1871                         args[ac++] = "--delete";
1872                 if (delete_excluded)
1873                         args[ac++] = "--delete-excluded";
1874                 if (force_delete)
1875                         args[ac++] = "--force";
1876                 if (write_batch < 0)
1877                         args[ac++] = "--only-write-batch=X";
1878                 if (am_root > 1)
1879                         args[ac++] = "--super";
1880                 if (size_only)
1881                         args[ac++] = "--size-only";
1882         } else {
1883                 if (skip_compress) {
1884                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
1885                                 goto oom;
1886                         args[ac++] = arg;
1887                 }
1888         }
1889
1890         if (modify_window_set) {
1891                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1892                         goto oom;
1893                 args[ac++] = arg;
1894         }
1895
1896         if (checksum_seed) {
1897                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1898                         goto oom;
1899                 args[ac++] = arg;
1900         }
1901
1902         if (partial_dir && am_sender) {
1903                 if (partial_dir != tmp_partialdir) {
1904                         args[ac++] = "--partial-dir";
1905                         args[ac++] = partial_dir;
1906                 }
1907                 if (delay_updates)
1908                         args[ac++] = "--delay-updates";
1909         } else if (keep_partial && am_sender)
1910                 args[ac++] = "--partial";
1911
1912         if (ignore_errors)
1913                 args[ac++] = "--ignore-errors";
1914
1915         if (copy_unsafe_links)
1916                 args[ac++] = "--copy-unsafe-links";
1917
1918         if (safe_symlinks)
1919                 args[ac++] = "--safe-links";
1920
1921         if (numeric_ids)
1922                 args[ac++] = "--numeric-ids";
1923
1924         if (!allow_inc_recurse)
1925                 args[ac++] = "--no-ir"; /* XXX change to --no-i-r soon */
1926
1927         if (am_sender) {
1928                 if (ignore_existing)
1929                         args[ac++] = "--ignore-existing";
1930
1931                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
1932                 if (ignore_non_existing)
1933                         args[ac++] = "--existing";
1934
1935                 if (tmpdir) {
1936                         args[ac++] = "--temp-dir";
1937                         args[ac++] = tmpdir;
1938                 }
1939
1940                 if (basis_dir[0]) {
1941                         /* the server only needs this option if it is not the sender,
1942                          *   and it may be an older version that doesn't know this
1943                          *   option, so don't send it if client is the sender.
1944                          */
1945                         int i;
1946                         for (i = 0; i < basis_dir_cnt; i++) {
1947                                 args[ac++] = dest_option;
1948                                 args[ac++] = basis_dir[i];
1949                         }
1950                 }
1951         }
1952
1953         if (append_mode) {
1954                 if (append_mode > 1)
1955                         args[ac++] = "--append";
1956                 args[ac++] = "--append";
1957         } else if (inplace)
1958                 args[ac++] = "--inplace";
1959
1960         if (files_from && (!am_sender || filesfrom_host)) {
1961                 if (filesfrom_host) {
1962                         args[ac++] = "--files-from";
1963                         args[ac++] = files_from;
1964                         if (eol_nulls)
1965                                 args[ac++] = "--from0";
1966                 } else {
1967                         args[ac++] = "--files-from=-";
1968                         args[ac++] = "--from0";
1969                 }
1970                 if (!relative_paths)
1971                         args[ac++] = "--no-relative";
1972         }
1973         if (relative_paths && !implied_dirs && !am_sender)
1974                 args[ac++] = "--no-implied-dirs";
1975
1976         if (fuzzy_basis && am_sender)
1977                 args[ac++] = "--fuzzy";
1978
1979         if (remove_source_files == 1)
1980                 args[ac++] = "--remove-source-files";
1981         else if (remove_source_files)
1982                 args[ac++] = "--remove-sent-files";
1983
1984         *argc_p = ac;
1985         return;
1986
1987     oom:
1988         out_of_memory("server_options");
1989 }
1990
1991 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
1992  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
1993  * memory with the HOST.  If a daemon-accessing spec was specified, the value
1994  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
1995  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
1996  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
1997  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
1998 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
1999 {
2000         char *p;
2001         int not_host;
2002         int hostlen;
2003
2004         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2005                 char *path;
2006                 s += strlen(URL_PREFIX);
2007                 if ((p = strchr(s, '/')) != NULL) {
2008                         hostlen = p - s;
2009                         path = p + 1;
2010                 } else {
2011                         hostlen = strlen(s);
2012                         path = "";
2013                 }
2014                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2015                         s++;
2016                         hostlen = p - s;
2017                         if (p[1] == ':')
2018                                 *port_ptr = atoi(p+2);
2019                 } else {
2020                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2021                                 hostlen = p - s;
2022                                 *port_ptr = atoi(p+1);
2023                         }
2024                 }
2025                 if (!*port_ptr)
2026                         *port_ptr = RSYNC_PORT;
2027                 *host_ptr = new_array(char, hostlen + 1);
2028                 strlcpy(*host_ptr, s, hostlen + 1);
2029                 return path;
2030         }
2031
2032         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2033                 s++;
2034                 hostlen = p - s;
2035                 *p = '\0';
2036                 not_host = strchr(s, '/') || !strchr(s, ':');
2037                 *p = ']';
2038                 if (not_host)
2039                         return NULL;
2040                 p++;
2041         } else {
2042                 if (!(p = strchr(s, ':')))
2043                         return NULL;
2044                 hostlen = p - s;
2045                 *p = '\0';
2046                 not_host = strchr(s, '/') != NULL;
2047                 *p = ':';
2048                 if (not_host)
2049                         return NULL;
2050         }
2051
2052         *host_ptr = new_array(char, hostlen + 1);
2053         strlcpy(*host_ptr, s, hostlen + 1);
2054
2055         if (p[1] == ':') {
2056                 if (port_ptr && !*port_ptr)
2057                         *port_ptr = RSYNC_PORT;
2058                 return p + 2;
2059         }
2060         if (port_ptr)
2061                 *port_ptr = 0;
2062
2063         return p + 1;
2064 }