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 "ifuncs.h"
  24 #include <popt.h>
  25 #include "zlib/zlib.h"
  26
  27 extern int module_id;
  28 extern int sanitize_paths;
  29 extern int daemon_over_rsh;
  30 extern unsigned int module_dirlen;
  31 extern struct filter_list_struct filter_list;
  32 extern struct filter_list_struct server_filter_list;
  33
  34 int make_backups = 0;
  35
  36 /**
  37  * If 1, send the whole file as literal data rather than trying to
  38  * create an incremental diff.
  39  *
  40  * If -1, then look at whether we're local or remote and go by that.
  41  *
  42  * @sa disable_deltas_p()
  43  **/
  44 int whole_file = -1;
  45
  46 int append_mode = 0;
  47 int keep_dirlinks = 0;
  48 int copy_dirlinks = 0;
  49 int copy_links = 0;
  50 int preserve_links = 0;
  51 int preserve_hard_links = 0;
  52 int preserve_acls = 0;
  53 int preserve_xattrs = 0;
  54 int preserve_perms = 0;
  55 int preserve_executability = 0;
  56 int preserve_devices = 0;
  57 int preserve_specials = 0;
  58 int preserve_uid = 0;
  59 int preserve_gid = 0;
  60 int preserve_times = 0;
  61 int update_only = 0;
  62 int cvs_exclude = 0;
  63 int dry_run = 0;
  64 int do_xfers = 1;
  65 int ignore_times = 0;
  66 int delete_mode = 0;
  67 int delete_during = 0;
  68 int delete_before = 0;
  69 int delete_after = 0;
  70 int delete_excluded = 0;
  71 int remove_source_files = 0;
  72 int one_file_system = 0;
  73 int protocol_version = PROTOCOL_VERSION;
  74 int sparse_files = 0;
  75 int do_compression = 0;
  76 int def_compress_level = Z_DEFAULT_COMPRESSION;
  77 int am_root = 0; /* 0 = normal, 1 = root, 2 = --super, -1 = --fake-super */
  78 int am_server = 0;
  79 int am_sender = 0;
  80 int am_generator = 0;
  81 int am_starting_up = 1;
  82 int relative_paths = -1;
  83 int implied_dirs = 1;
  84 int numeric_ids = 0;
  85 int allow_8bit_chars = 0;
  86 int force_delete = 0;
  87 int io_timeout = 0;
  88 int allowed_lull = 0;
  89 int prune_empty_dirs = 0;
  90 int use_qsort = 0;
  91 char *files_from = NULL;
  92 int filesfrom_fd = -1;
  93 char *filesfrom_host = NULL;
  94 int eol_nulls = 0;
  95 int protect_args = 0;
  96 int human_readable = 0;
  97 int recurse = 0;
  98 int allow_inc_recurse = 1;
  99 int xfer_dirs = -1;
 100 int am_daemon = 0;
 101 int do_stats = 0;
 102 int do_progress = 0;
 103 int connect_timeout = 0;
 104 int keep_partial = 0;
 105 int safe_symlinks = 0;
 106 int copy_unsafe_links = 0;
 107 int size_only = 0;
 108 int daemon_bwlimit = 0;
 109 int bwlimit = 0;
 110 int fuzzy_basis = 0;
 111 size_t bwlimit_writemax = 0;
 112 int ignore_existing = 0;
 113 int ignore_non_existing = 0;
 114 int need_messages_from_generator = 0;
 115 int max_delete = INT_MIN;
 116 OFF_T max_size = 0;
 117 OFF_T min_size = 0;
 118 int ignore_errors = 0;
 119 int modify_window = 0;
 120 int blocking_io = -1;
 121 int checksum_seed = 0;
 122 int inplace = 0;
 123 int delay_updates = 0;
 124 long block_size = 0; /* "long" because popt can't set an int32. */
 125 char *skip_compress = NULL;
 126
 127 /** Network address family. **/
 128 int default_af_hint
 129 #ifdef INET6
 130         = 0;            /* Any protocol */
 131 #else
 132         = AF_INET;      /* Must use IPv4 */
 133 # ifdef AF_INET6
 134 #  undef AF_INET6
 135 # endif
 136 # define AF_INET6 AF_INET /* make -6 option a no-op */
 137 #endif
 138
 139 /** Do not go into the background when run as --daemon.  Good
 140  * for debugging and required for running as a service on W32,
 141  * or under Unix process-monitors. **/
 142 int no_detach
 143 #if defined _WIN32 || defined __WIN32__
 144         = 1;
 145 #else
 146         = 0;
 147 #endif
 148
 149 int write_batch = 0;
 150 int read_batch = 0;
 151 int backup_dir_len = 0;
 152 int backup_suffix_len;
 153 unsigned int backup_dir_remainder;
 154
 155 char *backup_suffix = NULL;
 156 char *tmpdir = NULL;
 157 char *partial_dir = NULL;
 158 char *basis_dir[MAX_BASIS_DIRS+1];
 159 char *config_file = NULL;
 160 char *shell_cmd = NULL;
 161 char *logfile_name = NULL;
 162 char *logfile_format = NULL;
 163 char *stdout_format = NULL;
 164 char *password_file = NULL;
 165 char *rsync_path = RSYNC_PATH;
 166 char *backup_dir = NULL;
 167 char backup_dir_buf[MAXPATHLEN];
 168 char *sockopts = NULL;
 169 int rsync_port = 0;
 170 int compare_dest = 0;
 171 int copy_dest = 0;
 172 int link_dest = 0;
 173 int basis_dir_cnt = 0;
 174 char *dest_option = NULL;
 175
 176 int verbose = 0;
 177 int quiet = 0;
 178 int output_motd = 1;
 179 int log_before_transfer = 0;
 180 int stdout_format_has_i = 0;
 181 int stdout_format_has_o_or_i = 0;
 182 int logfile_format_has_i = 0;
 183 int logfile_format_has_o_or_i = 0;
 184 int always_checksum = 0;
 185 int list_only = 0;
 186
 187 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 188 char *batch_name = NULL;
 189
 190 int need_unsorted_flist = 0;
 191 #ifdef ICONV_OPTION
 192 char *iconv_opt = ICONV_OPTION;
 193 #endif
 194
 195 struct chmod_mode_struct *chmod_modes = NULL;
 196
 197 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 198 static int omit_dir_times = 0;
 199 static int F_option_cnt = 0;
 200 static int modify_window_set;
 201 static int itemize_changes = 0;
 202 static int refused_delete, refused_archive_part, refused_compress;
 203 static int refused_partial, refused_progress, refused_delete_before;
 204 static int refused_delete_during;
 205 static int refused_inplace, refused_no_iconv;
 206 static char *max_size_arg, *min_size_arg;
 207 static char tmp_partialdir[] = ".~tmp~";
 208
 209 /** Local address to bind.  As a character string because it's
 210  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 211  * address, or a hostname. **/
 212 char *bind_address;
 213
 214
 215 static void print_rsync_version(enum logcode f)
 216 {
 217         char *subprotocol = "";
 218         char const *got_socketpair = "no ";
 219         char const *have_inplace = "no ";
 220         char const *hardlinks = "no ";
 221         char const *symtimes = "no ";
 222         char const *acls = "no ";
 223         char const *xattrs = "no ";
 224         char const *links = "no ";
 225         char const *iconv = "no ";
 226         char const *ipv6 = "no ";
 227         STRUCT_STAT *dumstat;
 228
 229 #if SUBPROTOCOL_VERSION != 0
 230         asprintf(&subprotocol, ".PR%d", SUBPROTOCOL_VERSION);
 231 #endif
 232 #ifdef HAVE_SOCKETPAIR
 233         got_socketpair = "";
 234 #endif
 235 #ifdef HAVE_FTRUNCATE
 236         have_inplace = "";
 237 #endif
 238 #ifdef SUPPORT_HARD_LINKS
 239         hardlinks = "";
 240 #endif
 241 #ifdef SUPPORT_ACLS
 242         acls = "";
 243 #endif
 244 #ifdef SUPPORT_XATTRS
 245         xattrs = "";
 246 #endif
 247 #ifdef SUPPORT_LINKS
 248         links = "";
 249 #endif
 250 #ifdef INET6
 251         ipv6 = "";
 252 #endif
 253 #ifdef ICONV_OPTION
 254         iconv = "";
 255 #endif
 256 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
 257         symtimes = "";
 258 #endif
 259
 260         rprintf(f, "%s  version %s  protocol version %d%s\n",
 261                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
 262         rprintf(f, "Copyright (C) 1996-2007 by Andrew Tridgell, Wayne Davison, and others.\n");
 263         rprintf(f, "Web site: http://rsync.samba.org/\n");
 264         rprintf(f, "Capabilities:\n");
 265         rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",
 266                 (int)(sizeof (OFF_T) * 8),
 267                 (int)(sizeof dumstat->st_ino * 8), /* Don't check ino_t! */
 268                 (int)(sizeof (time_t) * 8),
 269                 (int)(sizeof (int64) * 8));
 270         rprintf(f, "    %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n",
 271                 got_socketpair, hardlinks, links, ipv6, have_inplace);
 272         rprintf(f, "    %sappend, %sACLs, %sxattrs, %siconv, %ssymtimes\n",
 273                 have_inplace, acls, xattrs, iconv, symtimes);
 274
 275 #ifdef MAINTAINER_MODE
 276         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 277 #endif
 278
 279 #if SIZEOF_INT64 < 8
 280         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 281 #endif
 282         if (sizeof (int64) != SIZEOF_INT64) {
 283                 rprintf(f,
 284                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 285                         (int) SIZEOF_INT64, (int) sizeof (int64));
 286         }
 287
 288         rprintf(f,"\n");
 289         rprintf(f,"rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 290         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 291         rprintf(f,"General Public Licence for details.\n");
 292 }
 293
 294
 295 void usage(enum logcode F)
 296 {
 297   print_rsync_version(F);
 298
 299   rprintf(F,"\n");
 300   rprintf(F,"rsync is a file transfer program capable of efficient remote update\n");
 301   rprintf(F,"via a fast differencing algorithm.\n");
 302
 303   rprintf(F,"\n");
 304   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... DEST\n");
 305   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 306   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 307   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 308   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 309   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 310   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 311   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 312   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 313   rprintf(F,"\n");
 314   rprintf(F,"Options\n");
 315   rprintf(F," -v, --verbose               increase verbosity\n");
 316   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 317   rprintf(F,"     --no-motd               suppress daemon-mode MOTD (see manpage caveat)\n");
 318   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 319   rprintf(F," -a, --archive               archive mode; equals -rlptgoD (no -H,-A,-X)\n");
 320   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 321   rprintf(F," -r, --recursive             recurse into directories\n");
 322   rprintf(F," -R, --relative              use relative path names\n");
 323   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 324   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 325   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 326   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 327   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 328   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 329   rprintf(F,"     --append                append data onto shorter files\n");
 330   rprintf(F,"     --append-verify         like --append, but with old data in file checksum\n");
 331   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 332   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 333   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 334   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 335   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 336   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 337   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 338   rprintf(F," -H, --hard-links            preserve hard links\n");
 339   rprintf(F," -p, --perms                 preserve permissions\n");
 340   rprintf(F," -E, --executability         preserve the file's executability\n");
 341   rprintf(F,"     --chmod=CHMOD           affect file and/or directory permissions\n");
 342 #ifdef SUPPORT_ACLS
 343   rprintf(F," -A, --acls                  preserve ACLs (implies --perms)\n");
 344 #endif
 345 #ifdef SUPPORT_XATTRS
 346   rprintf(F," -X, --xattrs                preserve extended attributes\n");
 347 #endif
 348   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 349   rprintf(F," -g, --group                 preserve group\n");
 350   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 351   rprintf(F,"     --specials              preserve special files\n");
 352   rprintf(F," -D                          same as --devices --specials\n");
 353   rprintf(F," -t, --times                 preserve modification times\n");
 354   rprintf(F," -O, --omit-dir-times        omit directories from --times\n");
 355   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 356 #ifdef SUPPORT_XATTRS
 357   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 358 #endif
 359   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 360   rprintf(F," -n, --dry-run               perform a trial run with no changes made\n");
 361   rprintf(F," -W, --whole-file            copy files whole (without delta-xfer algorithm)\n");
 362   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 363   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 364   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 365   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 366   rprintf(F,"     --existing              skip creating new files on receiver\n");
 367   rprintf(F,"     --ignore-existing       skip updating files that already exist on receiver\n");
 368   rprintf(F,"     --remove-source-files   sender removes synchronized files (non-dirs)\n");
 369   rprintf(F,"     --del                   an alias for --delete-during\n");
 370   rprintf(F,"     --delete                delete extraneous files from destination dirs\n");
 371   rprintf(F,"     --delete-before         receiver deletes before transfer, not during\n");
 372   rprintf(F,"     --delete-during         receiver deletes during transfer (default)\n");
 373   rprintf(F,"     --delete-delay          find deletions during, delete after\n");
 374   rprintf(F,"     --delete-after          receiver deletes after transfer, not during\n");
 375   rprintf(F,"     --delete-excluded       also delete excluded files from destination dirs\n");
 376   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 377   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 378   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 379   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 380   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 381   rprintf(F,"     --partial               keep partially transferred files\n");
 382   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 383   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 384   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 385   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 386   rprintf(F,"     --timeout=SECONDS       set I/O timeout in seconds\n");
 387   rprintf(F,"     --contimeout=SECONDS    set daemon connection timeout in seconds\n");
 388   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 389   rprintf(F,"     --size-only             skip files that match in size\n");
 390   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 391   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 392   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 393   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 394   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 395   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 396   rprintf(F," -z, --compress              compress file data during the transfer\n");
 397   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 398   rprintf(F,"     --skip-compress=LIST    skip compressing files with a suffix in LIST\n");
 399   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 400   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 401   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 402   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 403   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 404   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 405   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 406   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 407   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 408   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 409   rprintf(F," -s, --protect-args          no space-splitting; only wildcard special-chars\n");
 410   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 411   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 412   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 413   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 414   rprintf(F,"     --stats                 give some file-transfer stats\n");
 415   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 416   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 417   rprintf(F,"     --progress              show progress during transfer\n");
 418   rprintf(F," -P                          same as --partial --progress\n");
 419   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 420   rprintf(F,"     --out-format=FORMAT     output updates using the specified FORMAT\n");
 421   rprintf(F,"     --log-file=FILE         log what we're doing to the specified FILE\n");
 422   rprintf(F,"     --log-file-format=FMT   log updates using the specified FMT\n");
 423   rprintf(F,"     --password-file=FILE    read daemon-access password from FILE\n");
 424   rprintf(F,"     --list-only             list the files instead of copying them\n");
 425   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 426   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 427   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 428   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 429   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 430 #ifdef ICONV_OPTION
 431   rprintf(F,"     --iconv=CONVERT_SPEC    request charset conversion of filenames\n");
 432 #endif
 433   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 434   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 435   rprintf(F,"     --version               print version number\n");
 436   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 437
 438   rprintf(F,"\n");
 439   rprintf(F,"Use \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 440   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 441   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 442 }
 443
 444 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 445       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 446       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 447       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 448       OPT_NO_D, OPT_APPEND, OPT_NO_ICONV,
 449       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 450
 451 static struct poptOption long_options[] = {
 452   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 453   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 454   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 455   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 456   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 457   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 458   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 459   {"motd",             0,  POPT_ARG_VAL,    &output_motd, 1, 0, 0 },
 460   {"no-motd",          0,  POPT_ARG_VAL,    &output_motd, 0, 0, 0 },
 461   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 462   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 463   {"no-human-readable",0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 464   {"no-h",             0,  POPT_ARG_VAL,    &human_readable, 0, 0, 0},
 465   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 466   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 467   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 468   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 469   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 470   {"inc-recursive",    0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 471   {"no-inc-recursive", 0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 472   {"i-r",              0,  POPT_ARG_VAL,    &allow_inc_recurse, 1, 0, 0 },
 473   {"no-i-r",           0,  POPT_ARG_VAL,    &allow_inc_recurse, 0, 0, 0 },
 474   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 475   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 476   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 477   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 478   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 479   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 480   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 481   {"acls",            'A', POPT_ARG_NONE,   0, 'A', 0, 0 },
 482   {"no-acls",          0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 483   {"no-A",             0,  POPT_ARG_VAL,    &preserve_acls, 0, 0, 0 },
 484   {"xattrs",          'X', POPT_ARG_NONE,   0, 'X', 0, 0 },
 485   {"no-xattrs",        0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 486   {"no-X",             0,  POPT_ARG_VAL,    &preserve_xattrs, 0, 0, 0 },
 487   {"times",           't', POPT_ARG_VAL,    &preserve_times, 2, 0, 0 },
 488   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 489   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 490   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 1, 0, 0 },
 491   {"no-omit-dir-times",0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 492   {"no-O",             0,  POPT_ARG_VAL,    &omit_dir_times, 0, 0, 0 },
 493   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 494   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 495   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 496   {"fake-super",       0,  POPT_ARG_VAL,    &am_root, -1, 0, 0 },
 497   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 498   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 499   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 500   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 501   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 502   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 503   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 504   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 505   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 506   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 507   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 508   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 509   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 510   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 511   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 512   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 513   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 514   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 515   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 516   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 517   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
 518   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 519   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 520   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 521   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 522   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 523   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 524   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 525   {"i-d",              0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 526   {"no-i-d",           0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 527   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 528   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 529   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 530   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 531   {"no-one-file-system",'x',POPT_ARG_VAL,   &one_file_system, 0, 0, 0 },
 532   {"no-x",            'x', POPT_ARG_VAL,    &one_file_system, 0, 0, 0 },
 533   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 534   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 535   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 536   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 537   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 538   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 539   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 540   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 541   {"append",           0,  POPT_ARG_NONE,   0, OPT_APPEND, 0, 0 },
 542   {"append-verify",    0,  POPT_ARG_VAL,    &append_mode, 2, 0, 0 },
 543   {"no-append",        0,  POPT_ARG_VAL,    &append_mode, 0, 0, 0 },
 544   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 545   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 546   {"delete-before",    0,  POPT_ARG_NONE,   &delete_before, 0, 0, 0 },
 547   {"delete-during",    0,  POPT_ARG_VAL,    &delete_during, 1, 0, 0 },
 548   {"delete-delay",     0,  POPT_ARG_VAL,    &delete_during, 2, 0, 0 },
 549   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 550   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 551   {"remove-sent-files",0,  POPT_ARG_VAL,    &remove_source_files, 2, 0, 0 }, /* deprecated */
 552   {"remove-source-files",0,POPT_ARG_VAL,    &remove_source_files, 1, 0, 0 },
 553   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 554   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 555   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 556   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 557   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 558   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 559   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 560   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 561   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 562   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 563   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 564   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 565   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 566   {"checksum",        'c', POPT_ARG_VAL,    &always_checksum, 1, 0, 0 },
 567   {"no-checksum",      0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 568   {"no-c",             0,  POPT_ARG_VAL,    &always_checksum, 0, 0, 0 },
 569   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 570   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 571   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 572   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 573   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
 574   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 575   {"no-compress",      0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 576   {"skip-compress",    0,  POPT_ARG_STRING, &skip_compress, 0, 0, 0 },
 577   {"no-z",             0,  POPT_ARG_VAL,    &do_compression, 0, 0, 0 },
 578   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 579   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 580   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 581   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 582   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 583   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 584   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 585   {"delay-updates",    0,  POPT_ARG_VAL,    &delay_updates, 1, 0, 0 },
 586   {"no-delay-updates", 0,  POPT_ARG_VAL,    &delay_updates, 0, 0, 0 },
 587   {"prune-empty-dirs",'m', POPT_ARG_NONE,   &prune_empty_dirs, 0, 0, 0 },
 588   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 589   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 590   {"out-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 },
 591   {"log-format",       0,  POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */
 592   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 593   {"no-itemize-changes",0, POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 594   {"no-i",             0,  POPT_ARG_VAL,    &itemize_changes, 0, 0, 0 },
 595   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 596   {"no-bwlimit",       0,  POPT_ARG_VAL,    &bwlimit, 0, 0, 0 },
 597   {"backup",          'b', POPT_ARG_VAL,    &make_backups, 1, 0, 0 },
 598   {"no-backup",        0,  POPT_ARG_VAL,    &make_backups, 0, 0, 0 },
 599   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 600   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 601   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 602   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 603   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 604   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 605   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 606   {"from0",           '0', POPT_ARG_VAL,    &eol_nulls, 1, 0, 0},
 607   {"no-from0",         0,  POPT_ARG_VAL,    &eol_nulls, 0, 0, 0},
 608   {"protect-args",    's', POPT_ARG_VAL,    &protect_args, 1, 0, 0},
 609   {"no-protect-args",  0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 610   {"no-s",             0,  POPT_ARG_VAL,    &protect_args, 0, 0, 0},
 611   {"numeric-ids",      0,  POPT_ARG_VAL,    &numeric_ids, 1, 0, 0 },
 612   {"no-numeric-ids",   0,  POPT_ARG_VAL,    &numeric_ids, 0, 0, 0 },
 613   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 614   {"no-timeout",       0,  POPT_ARG_VAL,    &io_timeout, 0, 0, 0 },
 615   {"contimeout",       0,  POPT_ARG_INT,    &connect_timeout, 0, 0, 0 },
 616   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 617   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 618   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 619 #ifdef ICONV_OPTION
 620   {"iconv",            0,  POPT_ARG_STRING, &iconv_opt, 0, 0, 0 },
 621   {"no-iconv",         0,  POPT_ARG_NONE,   0, OPT_NO_ICONV, 0, 0 },
 622 #endif
 623   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 624   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 625   {"8-bit-output",    '8', POPT_ARG_NONE,   &allow_8bit_chars, 0, 0, 0 },
 626   {"qsort",            0,  POPT_ARG_NONE,   &use_qsort, 0, 0, 0 },
 627   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 628   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 629   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 630   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 631   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 632   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 633   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 634   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 635   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 636   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 637   /* All the following options switch us into daemon-mode option-parsing. */
 638   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 639   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 640   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 641   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 642   {0,0,0,0, 0, 0, 0}
 643 };
 644
 645 static void daemon_usage(enum logcode F)
 646 {
 647   print_rsync_version(F);
 648
 649   rprintf(F,"\n");
 650   rprintf(F,"Usage: rsync --daemon [OPTION]...\n");
 651   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 652   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 653   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 654   rprintf(F,"     --no-detach             do not detach from the parent\n");
 655   rprintf(F,"     --port=PORT             listen on alternate port number\n");
 656   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
 657   rprintf(F,"     --log-file-format=FMT   override the \"log format\" setting\n");
 658   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 659   rprintf(F," -v, --verbose               increase verbosity\n");
 660   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 661   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 662   rprintf(F,"     --help                  show this help screen\n");
 663
 664   rprintf(F,"\n");
 665   rprintf(F,"If you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 666   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 667 }
 668
 669 static struct poptOption long_daemon_options[] = {
 670   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 671   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 672   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
 673   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 674   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 675   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 676   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 677   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
 678   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
 679   {"log-file",         0,  POPT_ARG_STRING, &logfile_name, 0, 0, 0 },
 680   {"log-file-format",  0,  POPT_ARG_STRING, &logfile_format, 0, 0, 0 },
 681   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 682   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 683   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 684   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 685   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 686   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 687   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 688   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 689   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 690   {0,0,0,0, 0, 0, 0}
 691 };
 692
 693
 694 static char err_buf[200];
 695
 696
 697 /**
 698  * Store the option error message, if any, so that we can log the
 699  * connection attempt (which requires parsing the options), and then
 700  * show the error later on.
 701  **/
 702 void option_error(void)
 703 {
 704         if (!err_buf[0]) {
 705                 strlcpy(err_buf, "Error parsing options: option may "
 706                         "be supported on client but not on server?\n",
 707                         sizeof err_buf);
 708         }
 709
 710         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 711         msleep(20);
 712 }
 713
 714
 715 /**
 716  * Tweak the option table to disable all options that the rsyncd.conf
 717  * file has told us to refuse.
 718  **/
 719 static void set_refuse_options(char *bp)
 720 {
 721         struct poptOption *op;
 722         char *cp, shortname[2];
 723         int is_wild, found_match;
 724
 725         shortname[1] = '\0';
 726
 727         while (1) {
 728                 while (*bp == ' ') bp++;
 729                 if (!*bp)
 730                         break;
 731                 if ((cp = strchr(bp, ' ')) != NULL)
 732                         *cp= '\0';
 733                 is_wild = strpbrk(bp, "*?[") != NULL;
 734                 found_match = 0;
 735                 for (op = long_options; ; op++) {
 736                         *shortname = op->shortName;
 737                         if (!op->longName && !*shortname)
 738                                 break;
 739                         if ((op->longName && wildmatch(bp, op->longName))
 740                             || (*shortname && wildmatch(bp, shortname))) {
 741                                 if (op->argInfo == POPT_ARG_VAL)
 742                                         op->argInfo = POPT_ARG_NONE;
 743                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 744                                 found_match = 1;
 745                                 /* These flags are set to let us easily check
 746                                  * an implied option later in the code. */
 747                                 switch (*shortname) {
 748                                 case 'r': case 'd': case 'l': case 'p':
 749                                 case 't': case 'g': case 'o': case 'D':
 750                                         refused_archive_part = op->val;
 751                                         break;
 752                                 case 'z':
 753                                         refused_compress = op->val;
 754                                         break;
 755                                 case '\0':
 756                                         if (wildmatch("delete", op->longName))
 757                                                 refused_delete = op->val;
 758                                         else if (wildmatch("delete-before", op->longName))
 759                                                 refused_delete_before = op->val;
 760                                         else if (wildmatch("delete-during", op->longName))
 761                                                 refused_delete_during = op->val;
 762                                         else if (wildmatch("partial", op->longName))
 763                                                 refused_partial = op->val;
 764                                         else if (wildmatch("progress", op->longName))
 765                                                 refused_progress = op->val;
 766                                         else if (wildmatch("inplace", op->longName))
 767                                                 refused_inplace = op->val;
 768                                         else if (wildmatch("no-iconv", op->longName))
 769                                                 refused_no_iconv = op->val;
 770                                         break;
 771                                 }
 772                                 if (!is_wild)
 773                                         break;
 774                         }
 775                 }
 776                 if (!found_match) {
 777                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 778                                 bp);
 779                 }
 780                 if (!cp)
 781                         break;
 782                 *cp = ' ';
 783                 bp = cp + 1;
 784         }
 785 }
 786
 787
 788 static int count_args(const char **argv)
 789 {
 790         int i = 0;
 791
 792         if (argv) {
 793                 while (argv[i] != NULL)
 794                         i++;
 795         }
 796
 797         return i;
 798 }
 799
 800
 801 static OFF_T parse_size_arg(char **size_arg, char def_suf)
 802 {
 803         int reps, mult, make_compatible = 0;
 804         const char *arg;
 805         OFF_T size = 1;
 806
 807         for (arg = *size_arg; isDigit(arg); arg++) {}
 808         if (*arg == '.')
 809                 for (arg++; isDigit(arg); arg++) {}
 810         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
 811         case 'b': case 'B':
 812                 reps = 0;
 813                 break;
 814         case 'k': case 'K':
 815                 reps = 1;
 816                 break;
 817         case 'm': case 'M':
 818                 reps = 2;
 819                 break;
 820         case 'g': case 'G':
 821                 reps = 3;
 822                 break;
 823         default:
 824                 return -1;
 825         }
 826         if (*arg == 'b' || *arg == 'B')
 827                 mult = 1000, make_compatible = 1, arg++;
 828         else if (!*arg || *arg == '+' || *arg == '-')
 829                 mult = 1024;
 830         else if (strncasecmp(arg, "ib", 2) == 0)
 831                 mult = 1024, arg += 2;
 832         else
 833                 return -1;
 834         while (reps--)
 835                 size *= mult;
 836         size *= atof(*size_arg);
 837         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
 838                 size += atoi(arg), make_compatible = 1, arg += 2;
 839         if (*arg)
 840                 return -1;
 841         if (size > 0 && make_compatible) {
 842                 /* We convert this manually because we may need %lld precision,
 843                  * and that's not a portable sprintf() escape. */
 844                 char buf[128], *s = buf + sizeof buf - 1;
 845                 OFF_T num = size;
 846                 *s = '\0';
 847                 while (num) {
 848                         *--s = (char)(num % 10) + '0';
 849                         num /= 10;
 850                 }
 851                 if (!(*size_arg = strdup(s)))
 852                         out_of_memory("parse_size_arg");
 853         }
 854         return size;
 855 }
 856
 857
 858 static void create_refuse_error(int which)
 859 {
 860         /* The "which" value is the index + OPT_REFUSED_BASE. */
 861         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
 862         int n = snprintf(err_buf, sizeof err_buf,
 863                          "The server is configured to refuse --%s\n",
 864                          op->longName) - 1;
 865         if (op->shortName) {
 866                 snprintf(err_buf + n, sizeof err_buf - n,
 867                          " (-%c)\n", op->shortName);
 868         }
 869 }
 870
 871
 872 /**
 873  * Process command line arguments.  Called on both local and remote.
 874  *
 875  * @retval 1 if all options are OK; with globals set to appropriate
 876  * values
 877  *
 878  * @retval 0 on error, with err_buf containing an explanation
 879  **/
 880 int parse_arguments(int *argc_p, const char ***argv_p, int frommain)
 881 {
 882         static poptContext pc;
 883         char *ref = lp_refuse_options(module_id);
 884         const char *arg, **argv = *argv_p;
 885         int argc = *argc_p;
 886         int opt;
 887
 888         if (ref && *ref)
 889                 set_refuse_options(ref);
 890         if (am_daemon) {
 891                 set_refuse_options("log-file*");
 892                 if (!*lp_charset(module_id))
 893                         set_refuse_options("iconv");
 894         }
 895
 896 #ifdef ICONV_OPTION
 897         if (!am_daemon && !protect_args && (arg = getenv("RSYNC_ICONV")) != NULL && *arg)
 898                 iconv_opt = strdup(arg);
 899 #endif
 900
 901         /* TODO: Call poptReadDefaultConfig; handle errors. */
 902
 903         /* The context leaks in case of an error, but if there's a
 904          * problem we always exit anyhow. */
 905         if (pc)
 906                 poptFreeContext(pc);
 907         pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
 908         if (!am_server)
 909                 poptReadDefaultConfig(pc, 0);
 910
 911         while ((opt = poptGetNextOpt(pc)) != -1) {
 912                 /* most options are handled automatically by popt;
 913                  * only special cases are returned and listed here. */
 914
 915                 switch (opt) {
 916                 case OPT_VERSION:
 917                         print_rsync_version(FINFO);
 918                         exit_cleanup(0);
 919
 920                 case OPT_SERVER:
 921                         if (!am_server) {
 922                                 /* Disable popt aliases on the server side and
 923                                  * then start parsing the options again. */
 924                                 poptFreeContext(pc);
 925                                 pc = poptGetContext(RSYNC_NAME, argc, argv,
 926                                                     long_options, 0);
 927                                 am_server = 1;
 928                         }
 929 #ifdef ICONV_OPTION
 930                         iconv_opt = NULL;
 931 #endif
 932                         break;
 933
 934                 case OPT_SENDER:
 935                         if (!am_server) {
 936                                 usage(FERROR);
 937                                 exit_cleanup(RERR_SYNTAX);
 938                         }
 939                         am_sender = 1;
 940                         break;
 941
 942                 case OPT_DAEMON:
 943                         if (am_daemon) {
 944                                 strlcpy(err_buf,
 945                                         "Attempt to hack rsync thwarted!\n",
 946                                         sizeof err_buf);
 947                                 return 0;
 948                         }
 949 #ifdef ICONV_OPTION
 950                         iconv_opt = NULL;
 951 #endif
 952                         poptFreeContext(pc);
 953                         pc = poptGetContext(RSYNC_NAME, argc, argv,
 954                                             long_daemon_options, 0);
 955                         while ((opt = poptGetNextOpt(pc)) != -1) {
 956                                 switch (opt) {
 957                                 case 'h':
 958                                         daemon_usage(FINFO);
 959                                         exit_cleanup(0);
 960
 961                                 case 'v':
 962                                         verbose++;
 963                                         break;
 964
 965                                 default:
 966                                         rprintf(FERROR,
 967                                             "rsync: %s: %s (in daemon mode)\n",
 968                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 969                                             poptStrerror(opt));
 970                                         goto daemon_error;
 971                                 }
 972                         }
 973
 974                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 975                                 snprintf(err_buf, sizeof err_buf,
 976                                          "the --temp-dir path is WAY too long.\n");
 977                                 return 0;
 978                         }
 979
 980                         if (!daemon_opt) {
 981                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
 982                             daemon_error:
 983                                 rprintf(FERROR,
 984                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
 985                                 exit_cleanup(RERR_SYNTAX);
 986                         }
 987
 988                         *argv_p = argv = poptGetArgs(pc);
 989                         *argc_p = argc = count_args(argv);
 990                         am_starting_up = 0;
 991                         daemon_opt = 0;
 992                         am_daemon = 1;
 993                         return 1;
 994
 995                 case OPT_MODIFY_WINDOW:
 996                         /* The value has already been set by popt, but
 997                          * we need to remember that we're using a
 998                          * non-default setting. */
 999                         modify_window_set = 1;
1000                         break;
1001
1002                 case OPT_FILTER:
1003                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
1004                         break;
1005
1006                 case OPT_EXCLUDE:
1007                         parse_rule(&filter_list, poptGetOptArg(pc),
1008                                    0, XFLG_OLD_PREFIXES);
1009                         break;
1010
1011                 case OPT_INCLUDE:
1012                         parse_rule(&filter_list, poptGetOptArg(pc),
1013                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
1014                         break;
1015
1016                 case OPT_EXCLUDE_FROM:
1017                 case OPT_INCLUDE_FROM:
1018                         arg = poptGetOptArg(pc);
1019                         if (sanitize_paths)
1020                                 arg = sanitize_path(NULL, arg, NULL, 0);
1021                         if (server_filter_list.head) {
1022                                 int rej;
1023                                 char *dir, *cp = strdup(arg);
1024                                 if (!cp)
1025                                         out_of_memory("parse_arguments");
1026                                 if (!*cp)
1027                                         goto options_rejected;
1028                                 dir = cp + (*cp == '/' ? module_dirlen : 0);
1029                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1030                                 rej = check_filter(&server_filter_list, dir, 0) < 0;
1031                                 free(cp);
1032                                 if (rej)
1033                                         goto options_rejected;
1034                         }
1035                         parse_filter_file(&filter_list, arg,
1036                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
1037                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
1038                         break;
1039
1040                 case 'a':
1041                         if (refused_archive_part) {
1042                                 create_refuse_error(refused_archive_part);
1043                                 return 0;
1044                         }
1045                         if (!recurse) /* preserve recurse == 2 */
1046                                 recurse = 1;
1047 #ifdef SUPPORT_LINKS
1048                         preserve_links = 1;
1049 #endif
1050                         preserve_perms = 1;
1051                         preserve_times = 2;
1052                         preserve_gid = 1;
1053                         preserve_uid = 1;
1054                         preserve_devices = 1;
1055                         preserve_specials = 1;
1056                         break;
1057
1058                 case 'D':
1059                         preserve_devices = preserve_specials = 1;
1060                         break;
1061
1062                 case OPT_NO_D:
1063                         preserve_devices = preserve_specials = 0;
1064                         break;
1065
1066                 case 'h':
1067                         human_readable++;
1068                         break;
1069
1070                 case 'H':
1071                         preserve_hard_links++;
1072                         break;
1073
1074                 case 'i':
1075                         itemize_changes++;
1076                         break;
1077
1078                 case 'v':
1079                         verbose++;
1080                         break;
1081
1082                 case 'q':
1083                         if (frommain)
1084                                 quiet++;
1085                         break;
1086
1087                 case 'x':
1088                         one_file_system++;
1089                         break;
1090
1091                 case 'F':
1092                         switch (++F_option_cnt) {
1093                         case 1:
1094                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
1095                                 break;
1096                         case 2:
1097                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
1098                                 break;
1099                         }
1100                         break;
1101
1102                 case 'P':
1103                         if (refused_partial || refused_progress) {
1104                                 create_refuse_error(refused_partial
1105                                     ? refused_partial : refused_progress);
1106                                 return 0;
1107                         }
1108                         do_progress = 1;
1109                         keep_partial = 1;
1110                         break;
1111
1112                 case 'z':
1113                         if (def_compress_level < Z_DEFAULT_COMPRESSION
1114                          || def_compress_level > Z_BEST_COMPRESSION) {
1115                                 snprintf(err_buf, sizeof err_buf,
1116                                         "--compress-level value is invalid: %d\n",
1117                                         def_compress_level);
1118                                 return 0;
1119                         }
1120                         do_compression = def_compress_level != Z_NO_COMPRESSION;
1121                         if (do_compression && refused_compress) {
1122                                 create_refuse_error(refused_compress);
1123                                 return 0;
1124                         }
1125                         break;
1126
1127                 case OPT_WRITE_BATCH:
1128                         /* batch_name is already set */
1129                         write_batch = 1;
1130                         break;
1131
1132                 case OPT_ONLY_WRITE_BATCH:
1133                         /* batch_name is already set */
1134                         write_batch = -1;
1135                         break;
1136
1137                 case OPT_READ_BATCH:
1138                         /* batch_name is already set */
1139                         read_batch = 1;
1140                         break;
1141
1142                 case OPT_NO_ICONV:
1143 #ifdef ICONV_OPTION
1144                         iconv_opt = NULL;
1145 #endif
1146                         break;
1147
1148                 case OPT_MAX_SIZE:
1149                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1150                                 snprintf(err_buf, sizeof err_buf,
1151                                         "--max-size value is invalid: %s\n",
1152                                         max_size_arg);
1153                                 return 0;
1154                         }
1155                         break;
1156
1157                 case OPT_MIN_SIZE:
1158                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1159                                 snprintf(err_buf, sizeof err_buf,
1160                                         "--min-size value is invalid: %s\n",
1161                                         min_size_arg);
1162                                 return 0;
1163                         }
1164                         break;
1165
1166                 case OPT_APPEND:
1167                         if (am_server)
1168                                 append_mode++;
1169                         else
1170                                 append_mode = 1;
1171                         break;
1172
1173                 case OPT_LINK_DEST:
1174 #ifdef SUPPORT_HARD_LINKS
1175                         link_dest = 1;
1176                         dest_option = "--link-dest";
1177                         goto set_dest_dir;
1178 #else
1179                         snprintf(err_buf, sizeof err_buf,
1180                                  "hard links are not supported on this %s\n",
1181                                  am_server ? "server" : "client");
1182                         return 0;
1183 #endif
1184
1185                 case OPT_COPY_DEST:
1186                         copy_dest = 1;
1187                         dest_option = "--copy-dest";
1188                         goto set_dest_dir;
1189
1190                 case OPT_COMPARE_DEST:
1191                         compare_dest = 1;
1192                         dest_option = "--compare-dest";
1193                 set_dest_dir:
1194                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1195                                 snprintf(err_buf, sizeof err_buf,
1196                                         "ERROR: at most %d %s args may be specified\n",
1197                                         MAX_BASIS_DIRS, dest_option);
1198                                 return 0;
1199                         }
1200                         /* We defer sanitizing this arg until we know what
1201                          * our destination directory is going to be. */
1202                         basis_dir[basis_dir_cnt++] = (char *)poptGetOptArg(pc);
1203                         break;
1204
1205                 case OPT_CHMOD:
1206                         arg = poptGetOptArg(pc);
1207                         if (!parse_chmod(arg, &chmod_modes)) {
1208                                 snprintf(err_buf, sizeof err_buf,
1209                                     "Invalid argument passed to --chmod (%s)\n",
1210                                     arg);
1211                                 return 0;
1212                         }
1213                         break;
1214
1215                 case OPT_HELP:
1216                         usage(FINFO);
1217                         exit_cleanup(0);
1218
1219                 case 'A':
1220 #ifdef SUPPORT_ACLS
1221                         preserve_acls = 1;
1222                         preserve_perms = 1;
1223                         break;
1224 #else
1225                         /* FIXME: this should probably be ignored with a
1226                          * warning and then countermeasures taken to
1227                          * restrict group and other access in the presence
1228                          * of any more restrictive ACLs, but this is safe
1229                          * for now */
1230                         snprintf(err_buf,sizeof(err_buf),
1231                                  "ACLs are not supported on this %s\n",
1232                                  am_server ? "server" : "client");
1233                         return 0;
1234 #endif
1235
1236                 case 'X':
1237 #ifdef SUPPORT_XATTRS
1238                         preserve_xattrs++;
1239                         break;
1240 #else
1241                         snprintf(err_buf,sizeof(err_buf),
1242                                  "extended attributes are not supported on this %s\n",
1243                                  am_server ? "server" : "client");
1244                         return 0;
1245 #endif
1246
1247                 default:
1248                         /* A large opt value means that set_refuse_options()
1249                          * turned this option off. */
1250                         if (opt >= OPT_REFUSED_BASE) {
1251                                 create_refuse_error(opt);
1252                                 return 0;
1253                         }
1254                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1255                                  am_server ? "on remote machine: " : "",
1256                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1257                                  poptStrerror(opt));
1258                         return 0;
1259                 }
1260         }
1261
1262         if (human_readable && argc == 2) {
1263                 /* Allow the old meaning of 'h' (--help) on its own. */
1264                 usage(FINFO);
1265                 exit_cleanup(0);
1266         }
1267
1268 #ifdef ICONV_OPTION
1269         if (iconv_opt && protect_args != 2) {
1270                 if (!am_server && strcmp(iconv_opt, "-") == 0)
1271                         iconv_opt = NULL;
1272                 else
1273                         need_unsorted_flist = 1;
1274         }
1275         if (refused_no_iconv && !iconv_opt) {
1276                 create_refuse_error(refused_no_iconv);
1277                 return 0;
1278         }
1279 #endif
1280
1281         if (protect_args == 1) {
1282                 if (!frommain)
1283                         protect_args = 0;
1284                 else if (am_server)
1285                         return 1;
1286         }
1287
1288 #ifndef SUPPORT_LINKS
1289         if (preserve_links && !am_sender) {
1290                 snprintf(err_buf, sizeof err_buf,
1291                          "symlinks are not supported on this %s\n",
1292                          am_server ? "server" : "client");
1293                 return 0;
1294         }
1295 #endif
1296
1297 #ifndef SUPPORT_HARD_LINKS
1298         if (preserve_hard_links) {
1299                 snprintf(err_buf, sizeof err_buf,
1300                          "hard links are not supported on this %s\n",
1301                          am_server ? "server" : "client");
1302                 return 0;
1303         }
1304 #endif
1305
1306 #ifndef SUPPORT_XATTRS
1307         if (am_root < 0) {
1308                 snprintf(err_buf, sizeof err_buf,
1309                          "--fake-super requires an rsync with extended attributes enabled\n");
1310                 return 0;
1311         }
1312 #endif
1313
1314         if (write_batch && read_batch) {
1315                 snprintf(err_buf, sizeof err_buf,
1316                         "--write-batch and --read-batch can not be used together\n");
1317                 return 0;
1318         }
1319         if (write_batch > 0 || read_batch) {
1320                 if (am_server) {
1321                         rprintf(FINFO,
1322                                 "ignoring --%s-batch option sent to server\n",
1323                                 write_batch ? "write" : "read");
1324                         /* We don't actually exit_cleanup(), so that we can
1325                          * still service older version clients that still send
1326                          * batch args to server. */
1327                         read_batch = write_batch = 0;
1328                         batch_name = NULL;
1329                 } else if (dry_run)
1330                         write_batch = 0;
1331         } else if (write_batch < 0 && dry_run)
1332                 write_batch = 0;
1333         if (read_batch && files_from) {
1334                 snprintf(err_buf, sizeof err_buf,
1335                         "--read-batch cannot be used with --files-from\n");
1336                 return 0;
1337         }
1338         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1339                 snprintf(err_buf, sizeof err_buf,
1340                         "the batch-file name must be %d characters or less.\n",
1341                         MAX_BATCH_NAME_LEN);
1342                 return 0;
1343         }
1344
1345         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1346                 snprintf(err_buf, sizeof err_buf,
1347                          "the --temp-dir path is WAY too long.\n");
1348                 return 0;
1349         }
1350
1351         if (max_delete < 0 && max_delete != INT_MIN) {
1352                 /* Negative numbers are treated as "no deletions". */
1353                 max_delete = 0;
1354         }
1355
1356         if (compare_dest + copy_dest + link_dest > 1) {
1357                 snprintf(err_buf, sizeof err_buf,
1358                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1359                 return 0;
1360         }
1361
1362         if (files_from) {
1363                 if (recurse == 1) /* preserve recurse == 2 */
1364                         recurse = 0;
1365                 if (xfer_dirs < 0)
1366                         xfer_dirs = 1;
1367         }
1368
1369         if (xfer_dirs < 1)
1370                 xfer_dirs = recurse || list_only;
1371
1372         if (relative_paths < 0)
1373                 relative_paths = files_from? 1 : 0;
1374         if (!relative_paths)
1375                 implied_dirs = 0;
1376
1377         if (delete_before + !!delete_during + delete_after > 1) {
1378                 snprintf(err_buf, sizeof err_buf,
1379                         "You may not combine multiple --delete-WHEN options.\n");
1380                 return 0;
1381         }
1382         if (delete_before || delete_during || delete_after)
1383                 delete_mode = 1;
1384         else if (delete_mode || delete_excluded) {
1385                 /* Only choose now between before & during if one is refused. */
1386                 if (refused_delete_before) {
1387                         if (!refused_delete_during)
1388                                 delete_during = 1;
1389                         else {
1390                                 create_refuse_error(refused_delete_before);
1391                                 return 0;
1392                         }
1393                 } else if (refused_delete_during)
1394                         delete_before = 1;
1395                 delete_mode = 1;
1396         }
1397         if (!xfer_dirs && delete_mode) {
1398                 snprintf(err_buf, sizeof err_buf,
1399                         "--delete does not work without -r or -d.\n");
1400                 return 0;
1401         }
1402
1403         if (delete_mode && refused_delete) {
1404                 create_refuse_error(refused_delete);
1405                 return 0;
1406         }
1407
1408         if (remove_source_files) {
1409                 /* We only want to infer this refusal of --remove-source-files
1410                  * via the refusal of "delete", not any of the "delete-FOO"
1411                  * options. */
1412                 if (refused_delete && am_sender) {
1413                         create_refuse_error(refused_delete);
1414                         return 0;
1415                 }
1416                 need_messages_from_generator = 1;
1417         }
1418
1419         *argv_p = argv = poptGetArgs(pc);
1420         *argc_p = argc = count_args(argv);
1421
1422         if (sanitize_paths) {
1423                 int i;
1424                 for (i = argc; i-- > 0; )
1425                         argv[i] = sanitize_path(NULL, argv[i], "", 0);
1426                 if (tmpdir)
1427                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
1428                 if (backup_dir)
1429                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
1430         }
1431         if (server_filter_list.head && !am_sender) {
1432                 struct filter_list_struct *elp = &server_filter_list;
1433                 if (tmpdir) {
1434                         char *dir;
1435                         if (!*tmpdir)
1436                                 goto options_rejected;
1437                         dir = tmpdir + (*tmpdir == '/' ? module_dirlen : 0);
1438                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1439                         if (check_filter(elp, dir, 1) < 0)
1440                                 goto options_rejected;
1441                 }
1442                 if (backup_dir) {
1443                         char *dir;
1444                         if (!*backup_dir)
1445                                 goto options_rejected;
1446                         dir = backup_dir + (*backup_dir == '/' ? module_dirlen : 0);
1447                         clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1448                         if (check_filter(elp, dir, 1) < 0)
1449                                 goto options_rejected;
1450                 }
1451         }
1452
1453         if (!backup_suffix)
1454                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1455         backup_suffix_len = strlen(backup_suffix);
1456         if (strchr(backup_suffix, '/') != NULL) {
1457                 snprintf(err_buf, sizeof err_buf,
1458                         "--suffix cannot contain slashes: %s\n",
1459                         backup_suffix);
1460                 return 0;
1461         }
1462         if (backup_dir) {
1463                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1464                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1465                 if (backup_dir_remainder < 32) {
1466                         snprintf(err_buf, sizeof err_buf,
1467                                 "the --backup-dir path is WAY too long.\n");
1468                         return 0;
1469                 }
1470                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1471                         backup_dir_buf[backup_dir_len++] = '/';
1472                         backup_dir_buf[backup_dir_len] = '\0';
1473                 }
1474                 if (verbose > 1 && !am_sender)
1475                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1476         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1477                 snprintf(err_buf, sizeof err_buf,
1478                         "--suffix cannot be a null string without --backup-dir\n");
1479                 return 0;
1480         } else if (make_backups && delete_mode && !delete_excluded && !am_server) {
1481                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1482                         "P *%s", backup_suffix);
1483                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1484         }
1485
1486         if (make_backups && !backup_dir) {
1487                 omit_dir_times = 0; /* Implied, so avoid -O to sender. */
1488                 if (preserve_times > 1)
1489                         preserve_times = 1;
1490         } else if (omit_dir_times) {
1491                 if (preserve_times > 1)
1492                         preserve_times = 1;
1493         }
1494
1495         if (stdout_format) {
1496                 if (am_server && log_format_has(stdout_format, 'I'))
1497                         stdout_format_has_i = 2;
1498                 else if (log_format_has(stdout_format, 'i'))
1499                         stdout_format_has_i = itemize_changes | 1;
1500                 if (!log_format_has(stdout_format, 'b')
1501                  && !log_format_has(stdout_format, 'c'))
1502                         log_before_transfer = !am_server;
1503         } else if (itemize_changes) {
1504                 stdout_format = "%i %n%L";
1505                 stdout_format_has_i = itemize_changes;
1506                 log_before_transfer = !am_server;
1507         }
1508
1509         if (do_progress && !verbose && !log_before_transfer && !am_server)
1510                 verbose = 1;
1511
1512         if (dry_run)
1513                 do_xfers = 0;
1514
1515         set_io_timeout(io_timeout);
1516
1517         if (verbose && !stdout_format) {
1518                 stdout_format = "%n%L";
1519                 log_before_transfer = !am_server;
1520         }
1521         if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
1522                 stdout_format_has_o_or_i = 1;
1523
1524         if (logfile_name && !am_daemon) {
1525                 if (!logfile_format) {
1526                         logfile_format = "%i %n%L";
1527                         logfile_format_has_i = logfile_format_has_o_or_i = 1;
1528                 } else {
1529                         if (log_format_has(logfile_format, 'i'))
1530                                 logfile_format_has_i = 1;
1531                         if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
1532                                 logfile_format_has_o_or_i = 1;
1533                 }
1534                 log_init(0);
1535         } else if (!am_daemon)
1536                 logfile_format = NULL;
1537
1538         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1539                 bwlimit = daemon_bwlimit;
1540         if (bwlimit) {
1541                 bwlimit_writemax = (size_t)bwlimit * 128;
1542                 if (bwlimit_writemax < 512)
1543                         bwlimit_writemax = 512;
1544         }
1545
1546         if (sparse_files && inplace) {
1547                 /* Note: we don't check for this below, because --append is
1548                  * OK with --sparse (as long as redos are handled right). */
1549                 snprintf(err_buf, sizeof err_buf,
1550                          "--sparse cannot be used with --inplace\n");
1551                 return 0;
1552         }
1553
1554         if (append_mode) {
1555                 if (whole_file > 0) {
1556                         snprintf(err_buf, sizeof err_buf,
1557                                  "--append cannot be used with --whole-file\n");
1558                         return 0;
1559                 }
1560                 if (refused_inplace) {
1561                         create_refuse_error(refused_inplace);
1562                         return 0;
1563                 }
1564                 inplace = 1;
1565         }
1566
1567         if (delay_updates && !partial_dir)
1568                 partial_dir = tmp_partialdir;
1569
1570         if (inplace) {
1571 #ifdef HAVE_FTRUNCATE
1572                 if (partial_dir) {
1573                         snprintf(err_buf, sizeof err_buf,
1574                                  "--%s cannot be used with --%s\n",
1575                                  append_mode ? "append" : "inplace",
1576                                  delay_updates ? "delay-updates" : "partial-dir");
1577                         return 0;
1578                 }
1579                 /* --inplace implies --partial for refusal purposes, but we
1580                  * clear the keep_partial flag for internal logic purposes. */
1581                 if (refused_partial) {
1582                         create_refuse_error(refused_partial);
1583                         return 0;
1584                 }
1585                 keep_partial = 0;
1586 #else
1587                 snprintf(err_buf, sizeof err_buf,
1588                          "--%s is not supported on this %s\n",
1589                          append_mode ? "append" : "inplace",
1590                          am_server ? "server" : "client");
1591                 return 0;
1592 #endif
1593         } else {
1594                 if (keep_partial && !partial_dir && !am_server) {
1595                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1596                                 partial_dir = strdup(arg);
1597                 }
1598                 if (partial_dir) {
1599                         if (*partial_dir)
1600                                 clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1601                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1602                                 partial_dir = NULL;
1603                         if (!partial_dir && refused_partial) {
1604                                 create_refuse_error(refused_partial);
1605                                 return 0;
1606                         }
1607                         keep_partial = 1;
1608                 }
1609         }
1610
1611         if (files_from) {
1612                 char *h, *p;
1613                 int q;
1614                 if (argc > 2 || (!am_daemon && argc == 1)) {
1615                         usage(FERROR);
1616                         exit_cleanup(RERR_SYNTAX);
1617                 }
1618                 if (strcmp(files_from, "-") == 0) {
1619                         filesfrom_fd = 0;
1620                         if (am_server)
1621                                 filesfrom_host = ""; /* reading from socket */
1622                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1623                         if (am_server) {
1624                                 snprintf(err_buf, sizeof err_buf,
1625                                         "The --files-from sent to the server cannot specify a host.\n");
1626                                 return 0;
1627                         }
1628                         files_from = p;
1629                         filesfrom_host = h;
1630                         if (strcmp(files_from, "-") == 0) {
1631                                 snprintf(err_buf, sizeof err_buf,
1632                                         "Invalid --files-from remote filename\n");
1633                                 return 0;
1634                         }
1635                 } else {
1636                         if (sanitize_paths)
1637                                 files_from = sanitize_path(NULL, files_from, NULL, 0);
1638                         if (server_filter_list.head) {
1639                                 char *dir;
1640                                 if (!*files_from)
1641                                         goto options_rejected;
1642                                 dir = files_from + (*files_from == '/' ? module_dirlen : 0);
1643                                 clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
1644                                 if (check_filter(&server_filter_list, dir, 0) < 0)
1645                                         goto options_rejected;
1646                         }
1647                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1648                         if (filesfrom_fd < 0) {
1649                                 snprintf(err_buf, sizeof err_buf,
1650                                         "failed to open files-from file %s: %s\n",
1651                                         files_from, strerror(errno));
1652                                 return 0;
1653                         }
1654                 }
1655         }
1656
1657         am_starting_up = 0;
1658
1659         return 1;
1660
1661   options_rejected:
1662         snprintf(err_buf, sizeof err_buf,
1663                 "Your options have been rejected by the server.\n");
1664         return 0;
1665 }
1666
1667
1668 /**
1669  * Construct a filtered list of options to pass through from the
1670  * client to the server.
1671  *
1672  * This involves setting options that will tell the server how to
1673  * behave, and also filtering out options that are processed only
1674  * locally.
1675  **/
1676 void server_options(char **args, int *argc_p)
1677 {
1678         static char argstr[64];
1679         int ac = *argc_p;
1680         char *arg;
1681         int i, x;
1682
1683         /* This should always remain first on the server's command-line. */
1684         args[ac++] = "--server";
1685
1686         if (daemon_over_rsh > 0) {
1687                 args[ac++] = "--daemon";
1688                 *argc_p = ac;
1689                 /* if we're passing --daemon, we're done */
1690                 return;
1691         }
1692
1693         if (!am_sender)
1694                 args[ac++] = "--sender";
1695
1696         x = 1;
1697         argstr[0] = '-';
1698
1699         if (protect_args)
1700                 argstr[x++] = 's';
1701
1702         for (i = 0; i < verbose; i++)
1703                 argstr[x++] = 'v';
1704
1705         /* the -q option is intentionally left out */
1706         if (make_backups)
1707                 argstr[x++] = 'b';
1708         if (update_only)
1709                 argstr[x++] = 'u';
1710         if (!do_xfers) /* Note: NOT "dry_run"! */
1711                 argstr[x++] = 'n';
1712         if (preserve_links)
1713                 argstr[x++] = 'l';
1714         if ((list_only && !recurse) || xfer_dirs > 1
1715          || (xfer_dirs && !recurse && delete_mode && am_sender))
1716                 argstr[x++] = 'd';
1717         if (am_sender) {
1718                 if (keep_dirlinks)
1719                         argstr[x++] = 'K';
1720                 if (prune_empty_dirs)
1721                         argstr[x++] = 'm';
1722                 if (omit_dir_times)
1723                         argstr[x++] = 'O';
1724         } else {
1725                 if (copy_links)
1726                         argstr[x++] = 'L';
1727                 if (copy_dirlinks)
1728                         argstr[x++] = 'k';
1729         }
1730
1731         if (whole_file > 0)
1732                 argstr[x++] = 'W';
1733         /* We don't need to send --no-whole-file, because it's the
1734          * default for remote transfers, and in any case old versions
1735          * of rsync will not understand it. */
1736
1737         if (preserve_hard_links) {
1738                 argstr[x++] = 'H';
1739                 if (preserve_hard_links > 1)
1740                         argstr[x++] = 'H';
1741         }
1742         if (preserve_uid)
1743                 argstr[x++] = 'o';
1744         if (preserve_gid)
1745                 argstr[x++] = 'g';
1746         if (preserve_devices) /* ignore preserve_specials here */
1747                 argstr[x++] = 'D';
1748         if (preserve_times)
1749                 argstr[x++] = 't';
1750         if (preserve_perms)
1751                 argstr[x++] = 'p';
1752         else if (preserve_executability && am_sender)
1753                 argstr[x++] = 'E';
1754 #ifdef SUPPORT_ACLS
1755         if (preserve_acls)
1756                 argstr[x++] = 'A';
1757 #endif
1758 #ifdef SUPPORT_XATTRS
1759         if (preserve_xattrs) {
1760                 argstr[x++] = 'X';
1761                 if (preserve_xattrs > 1)
1762                         argstr[x++] = 'X';
1763         }
1764 #endif
1765         if (recurse)
1766                 argstr[x++] = 'r';
1767         if (always_checksum)
1768                 argstr[x++] = 'c';
1769         if (cvs_exclude)
1770                 argstr[x++] = 'C';
1771         if (ignore_times)
1772                 argstr[x++] = 'I';
1773         if (relative_paths)
1774                 argstr[x++] = 'R';
1775         if (one_file_system) {
1776                 argstr[x++] = 'x';
1777                 if (one_file_system > 1)
1778                         argstr[x++] = 'x';
1779         }
1780         if (sparse_files)
1781                 argstr[x++] = 'S';
1782         if (do_compression)
1783                 argstr[x++] = 'z';
1784
1785         /* We make use of the -e option to let the server know about any
1786          * pre-release protocol version && some behavior flags. */
1787         argstr[x++] = 'e';
1788 #if SUBPROTOCOL_VERSION != 0
1789         if (protocol_version == PROTOCOL_VERSION) {
1790                 x += snprintf(argstr+x, sizeof argstr - x,
1791                               "%d.%d", PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
1792         } else
1793 #endif
1794                 argstr[x++] = '.';
1795         set_allow_inc_recurse();
1796         if (allow_inc_recurse)
1797                 argstr[x++] = 'i';
1798 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
1799         argstr[x++] = 'L';
1800 #endif
1801         argstr[x] = '\0';
1802
1803         args[ac++] = argstr;
1804
1805 #ifdef ICONV_OPTION
1806         if (iconv_opt) {
1807                 char *set = strchr(iconv_opt, ',');
1808                 if (set)
1809                         set++;
1810                 else
1811                         set = iconv_opt;
1812                 if (asprintf(&arg, "--iconv=%s", set) < 0)
1813                         goto oom;
1814                 args[ac++] = arg;
1815         }
1816 #endif
1817
1818         if (protect_args) /* initial args break here */
1819                 args[ac++] = NULL;
1820
1821         if (list_only > 1)
1822                 args[ac++] = "--list-only";
1823
1824         /* This makes sure that the remote rsync can handle deleting with -d
1825          * sans -r because the --no-r option was added at the same time. */
1826         if (xfer_dirs && !recurse && delete_mode && am_sender)
1827                 args[ac++] = "--no-r";
1828
1829         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1830                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1831                         goto oom;
1832                 args[ac++] = arg;
1833         }
1834
1835         if (preserve_devices) {
1836                 /* Note: sending "--devices" would not be backward-compatible. */
1837                 if (!preserve_specials)
1838                         args[ac++] = "--no-specials"; /* -D is already set. */
1839         } else if (preserve_specials)
1840                 args[ac++] = "--specials";
1841
1842         /* The server side doesn't use our log-format, but in certain
1843          * circumstances they need to know a little about the option. */
1844         if (stdout_format && am_sender) {
1845                 /* Use --log-format, not --out-format, for compatibility. */
1846                 if (stdout_format_has_i > 1)
1847                         args[ac++] = "--log-format=%i%I";
1848                 else if (stdout_format_has_i)
1849                         args[ac++] = "--log-format=%i";
1850                 else if (stdout_format_has_o_or_i)
1851                         args[ac++] = "--log-format=%o";
1852                 else if (!verbose)
1853                         args[ac++] = "--log-format=X";
1854         }
1855
1856         if (block_size) {
1857                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1858                         goto oom;
1859                 args[ac++] = arg;
1860         }
1861
1862         if (io_timeout) {
1863                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1864                         goto oom;
1865                 args[ac++] = arg;
1866         }
1867
1868         if (bwlimit) {
1869                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1870                         goto oom;
1871                 args[ac++] = arg;
1872         }
1873
1874         if (backup_dir) {
1875                 args[ac++] = "--backup-dir";
1876                 args[ac++] = backup_dir;
1877         }
1878
1879         /* Only send --suffix if it specifies a non-default value. */
1880         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1881                 /* We use the following syntax to avoid weirdness with '~'. */
1882                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1883                         goto oom;
1884                 args[ac++] = arg;
1885         }
1886
1887         if (am_sender) {
1888                 if (max_delete > 0) {
1889                         if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1890                                 goto oom;
1891                         args[ac++] = arg;
1892                 } else if (max_delete == 0)
1893                         args[ac++] = "--max-delete=-1";
1894                 if (min_size) {
1895                         args[ac++] = "--min-size";
1896                         args[ac++] = min_size_arg;
1897                 }
1898                 if (max_size) {
1899                         args[ac++] = "--max-size";
1900                         args[ac++] = max_size_arg;
1901                 }
1902                 if (delete_before)
1903                         args[ac++] = "--delete-before";
1904                 else if (delete_during == 2)
1905                         args[ac++] = "--delete-delay";
1906                 else if (delete_during)
1907                         args[ac++] = "--delete-during";
1908                 else if (delete_after)
1909                         args[ac++] = "--delete-after";
1910                 else if (delete_mode && !delete_excluded)
1911                         args[ac++] = "--delete";
1912                 if (delete_excluded)
1913                         args[ac++] = "--delete-excluded";
1914                 if (force_delete)
1915                         args[ac++] = "--force";
1916                 if (write_batch < 0)
1917                         args[ac++] = "--only-write-batch=X";
1918                 if (am_root > 1)
1919                         args[ac++] = "--super";
1920                 if (size_only)
1921                         args[ac++] = "--size-only";
1922         } else {
1923                 if (skip_compress) {
1924                         if (asprintf(&arg, "--skip-compress=%s", skip_compress) < 0)
1925                                 goto oom;
1926                         args[ac++] = arg;
1927                 }
1928         }
1929
1930         if (modify_window_set) {
1931                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1932                         goto oom;
1933                 args[ac++] = arg;
1934         }
1935
1936         if (checksum_seed) {
1937                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1938                         goto oom;
1939                 args[ac++] = arg;
1940         }
1941
1942         if (partial_dir && am_sender) {
1943                 if (partial_dir != tmp_partialdir) {
1944                         args[ac++] = "--partial-dir";
1945                         args[ac++] = partial_dir;
1946                 }
1947                 if (delay_updates)
1948                         args[ac++] = "--delay-updates";
1949         } else if (keep_partial && am_sender)
1950                 args[ac++] = "--partial";
1951
1952         if (ignore_errors)
1953                 args[ac++] = "--ignore-errors";
1954
1955         if (copy_unsafe_links)
1956                 args[ac++] = "--copy-unsafe-links";
1957
1958         if (safe_symlinks)
1959                 args[ac++] = "--safe-links";
1960
1961         if (numeric_ids)
1962                 args[ac++] = "--numeric-ids";
1963
1964         if (use_qsort)
1965                 args[ac++] = "--use-qsort";
1966
1967         if (am_sender) {
1968                 if (ignore_existing)
1969                         args[ac++] = "--ignore-existing";
1970
1971                 /* Backward compatibility: send --existing, not --ignore-non-existing. */
1972                 if (ignore_non_existing)
1973                         args[ac++] = "--existing";
1974
1975                 if (tmpdir) {
1976                         args[ac++] = "--temp-dir";
1977                         args[ac++] = tmpdir;
1978                 }
1979
1980                 if (basis_dir[0]) {
1981                         /* the server only needs this option if it is not the sender,
1982                          *   and it may be an older version that doesn't know this
1983                          *   option, so don't send it if client is the sender.
1984                          */
1985                         int i;
1986                         for (i = 0; i < basis_dir_cnt; i++) {
1987                                 args[ac++] = dest_option;
1988                                 args[ac++] = basis_dir[i];
1989                         }
1990                 }
1991         }
1992
1993         if (append_mode) {
1994                 if (append_mode > 1)
1995                         args[ac++] = "--append";
1996                 args[ac++] = "--append";
1997         } else if (inplace)
1998                 args[ac++] = "--inplace";
1999
2000         if (files_from && (!am_sender || filesfrom_host)) {
2001                 if (filesfrom_host) {
2002                         args[ac++] = "--files-from";
2003                         args[ac++] = files_from;
2004                         if (eol_nulls)
2005                                 args[ac++] = "--from0";
2006                 } else {
2007                         args[ac++] = "--files-from=-";
2008                         args[ac++] = "--from0";
2009                 }
2010                 if (!relative_paths)
2011                         args[ac++] = "--no-relative";
2012         }
2013         /* It's OK that this checks the upper-bound of the protocol_version. */
2014         if (relative_paths && !implied_dirs && (!am_sender || protocol_version >= 30))
2015                 args[ac++] = "--no-implied-dirs";
2016
2017         if (fuzzy_basis && am_sender)
2018                 args[ac++] = "--fuzzy";
2019
2020         if (remove_source_files == 1)
2021                 args[ac++] = "--remove-source-files";
2022         else if (remove_source_files)
2023                 args[ac++] = "--remove-sent-files";
2024
2025         *argc_p = ac;
2026         return;
2027
2028     oom:
2029         out_of_memory("server_options");
2030 }
2031
2032 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
2033  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
2034  * memory with the HOST.  If a daemon-accessing spec was specified, the value
2035  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
2036  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
2037  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
2038  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
2039 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
2040 {
2041         char *p;
2042         int not_host;
2043         int hostlen;
2044
2045         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
2046                 char *path;
2047                 s += strlen(URL_PREFIX);
2048                 if ((p = strchr(s, '/')) != NULL) {
2049                         hostlen = p - s;
2050                         path = p + 1;
2051                 } else {
2052                         hostlen = strlen(s);
2053                         path = "";
2054                 }
2055                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
2056                         s++;
2057                         hostlen = p - s;
2058                         if (p[1] == ':')
2059                                 *port_ptr = atoi(p+2);
2060                 } else {
2061                         if ((p = strchr(s, ':')) != NULL && p < s + hostlen) {
2062                                 hostlen = p - s;
2063                                 *port_ptr = atoi(p+1);
2064                         }
2065                 }
2066                 if (!*port_ptr)
2067                         *port_ptr = RSYNC_PORT;
2068                 *host_ptr = new_array(char, hostlen + 1);
2069                 strlcpy(*host_ptr, s, hostlen + 1);
2070                 return path;
2071         }
2072
2073         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
2074                 s++;
2075                 hostlen = p - s;
2076                 *p = '\0';
2077                 not_host = strchr(s, '/') || !strchr(s, ':');
2078                 *p = ']';
2079                 if (not_host)
2080                         return NULL;
2081                 p++;
2082         } else {
2083                 if (!(p = strchr(s, ':')))
2084                         return NULL;
2085                 hostlen = p - s;
2086                 *p = '\0';
2087                 not_host = strchr(s, '/') != NULL;
2088                 *p = ':';
2089                 if (not_host)
2090                         return NULL;
2091         }
2092
2093         *host_ptr = new_array(char, hostlen + 1);
2094         strlcpy(*host_ptr, s, hostlen + 1);
2095
2096         if (p[1] == ':') {
2097                 if (port_ptr && !*port_ptr)
2098                         *port_ptr = RSYNC_PORT;
2099                 return p + 2;
2100         }
2101         if (port_ptr)
2102                 *port_ptr = 0;
2103
2104         return p + 1;
2105 }